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Proteintech atg4b
LPS activates autophagy-related protein expression in HBE cells in a concentration-dependent manner. ( A ) Representative Western blot bands showing the expression of ATG7, PIK3C3, <t>ATG4B,</t> p62, LC3B, and β-actin (loading control) in HBE cells treated with 0, 1, 10, 50, or 100 ng/mL LPS. ( B–F ) Quantitative analysis of relative protein expression (normalized to β-actin) for ATG4B ( B ), ATG7 ( C ), PIK3C3 ( D ), p62 ( E ), and LC3B-II ( F ). Data are presented as mean ± SD (n=3 independent experiments). *P<0.05 vs 0 ng/mL group.
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1) Product Images from "Ginsenoside Rg3 Mitigates LPS-Induced Injury in Human Bronchial Epithelial Cells by Restoring Autophagic Flux and Inhibiting the TLR4/NF-κB-Mediated Inflammatory Response"

Article Title: Ginsenoside Rg3 Mitigates LPS-Induced Injury in Human Bronchial Epithelial Cells by Restoring Autophagic Flux and Inhibiting the TLR4/NF-κB-Mediated Inflammatory Response

Journal: Journal of Inflammation Research

doi: 10.2147/JIR.S555053

LPS activates autophagy-related protein expression in HBE cells in a concentration-dependent manner. ( A ) Representative Western blot bands showing the expression of ATG7, PIK3C3, ATG4B, p62, LC3B, and β-actin (loading control) in HBE cells treated with 0, 1, 10, 50, or 100 ng/mL LPS. ( B–F ) Quantitative analysis of relative protein expression (normalized to β-actin) for ATG4B ( B ), ATG7 ( C ), PIK3C3 ( D ), p62 ( E ), and LC3B-II ( F ). Data are presented as mean ± SD (n=3 independent experiments). *P<0.05 vs 0 ng/mL group.
Figure Legend Snippet: LPS activates autophagy-related protein expression in HBE cells in a concentration-dependent manner. ( A ) Representative Western blot bands showing the expression of ATG7, PIK3C3, ATG4B, p62, LC3B, and β-actin (loading control) in HBE cells treated with 0, 1, 10, 50, or 100 ng/mL LPS. ( B–F ) Quantitative analysis of relative protein expression (normalized to β-actin) for ATG4B ( B ), ATG7 ( C ), PIK3C3 ( D ), p62 ( E ), and LC3B-II ( F ). Data are presented as mean ± SD (n=3 independent experiments). *P<0.05 vs 0 ng/mL group.

Techniques Used: Expressing, Concentration Assay, Western Blot, Control

G-Rg3 Antagonizes LPS-Induced Autophagy in HBE Cells in Concentration- and Time-Dependent Manners. ( A ) Representative Western blot bands of ATG7, PIK3C3, ATG4B, p62, LC3B, and β-actin (loading control) in HBE cells treated with LPS (100 ng/mL) alone or co-treated with 2–16 μM G-Rg3. ( B ) Representative Western blot bands of p62, LC3B, and β-actin in HBE cells treated with LPS (100 ng/mL) + 16 μM G-Rg3 for 0–30 h. ( C ) Quantitative analysis of relative p62 and LC3B-II/I expression (normalized to β-actin) in LPS-treated cells with different G-Rg3 concentrations. ( D ) Quantitative analysis of relative p62 and LC3B-II/I expression (normalized to β-actin) in LPS + 16 μM G-Rg3-treated cells at different time points. Data are presented as mean ± SD (n = 3 independent experiments). *P < 0.05 vs the corresponding control group.
Figure Legend Snippet: G-Rg3 Antagonizes LPS-Induced Autophagy in HBE Cells in Concentration- and Time-Dependent Manners. ( A ) Representative Western blot bands of ATG7, PIK3C3, ATG4B, p62, LC3B, and β-actin (loading control) in HBE cells treated with LPS (100 ng/mL) alone or co-treated with 2–16 μM G-Rg3. ( B ) Representative Western blot bands of p62, LC3B, and β-actin in HBE cells treated with LPS (100 ng/mL) + 16 μM G-Rg3 for 0–30 h. ( C ) Quantitative analysis of relative p62 and LC3B-II/I expression (normalized to β-actin) in LPS-treated cells with different G-Rg3 concentrations. ( D ) Quantitative analysis of relative p62 and LC3B-II/I expression (normalized to β-actin) in LPS + 16 μM G-Rg3-treated cells at different time points. Data are presented as mean ± SD (n = 3 independent experiments). *P < 0.05 vs the corresponding control group.

Techniques Used: Concentration Assay, Western Blot, Control, Expressing

Related Articles

Concentration Assay:

Article Title: Ginsenoside Rg3 Mitigates LPS-Induced Injury in Human Bronchial Epithelial Cells by Restoring Autophagic Flux and Inhibiting the TLR4/NF-κB-Mediated Inflammatory Response
Article Snippet: Human bronchial epithelial (HBE) cells (ATCC, Cat# CCL-202) were used as the in vitro model, with strict control of cell handling and culture conditions to ensure experimental consistency: remove cryopreserved cells from −80°C storage, immediately immerse the cryovial in a 37°C water bath (Thermo Fisher, Model WB2000) and gently agitate for 1–2 minutes until only a small ice crystal remains, disinfect the vial surface with 75% ethanol (Solarbio, Cat# 10009218), transfer the cell suspension to a 15 mL centrifuge tube (Corning, Cat# 430791) containing 5 mL pre-warmed (37°C) complete Dulbecco’s modified Eagle’s medium (DMEM; Gibco, Cat# c11965500BT) supplemented with 10% heat-inactivated fetal bovine serum (FBS; Gibco, Cat# 10099141) and 1% penicillin-streptomycin (100 U/mL penicillin, 100 μg/mL streptomycin; Solarbio, Cat# P1400), centrifuge at 1000×g for 5 minutes at room temperature (RT), discard the supernatant, resuspend the cell pellet in 5 mL complete DMEM, count cells using a hemocytometer (Thermo Fisher, Cat# 02–671-5), seed at a density of 5×10 5 cells per T75 flask (Corning, Cat# 430641), and culture in a humidified incubator (Thermo Fisher, Model 3111) set to 37°C, 5% CO 2 , and 95% relative humidity; when cells reach 80–90% confluence (typically 48–72 hours post-seeding), perform passaging by aspirating the culture medium, rinsing twice with 5 mL pre-warmed PBS (Solarbio, Cat# P1020), adding 2 mL 0.25% trypsin-EDTA (Gibco, Cat# 25200056) and incubating at 37°C for 2–3 minutes (monitoring cell detachment under an inverted microscope), neutralizing trypsin with 4 mL complete DMEM, centrifuging at 1000×g for 5 minutes, discarding the supernatant, resuspending the cell pellet in 5 mL complete DMEM, counting again, and seeding at the required density, with only cells at passages 3–8 used for experiments (to avoid cellular senescence) and cell viability confirmed to be >95% via trypan blue staining (Solarbio, Cat# T8154) before each experiment. .. Ginsenoside Rg3 (G-Rg3) with ≥98% purity was purchased from TargetMol (Cat# T3402), dissolved in dimethyl sulfoxide (DMSO; Sigma, Cat# C6628) to prepare a 10 mM stock solution, and stored at −80°C (avoiding repeated freeze-thaw cycles, with final DMSO concentration in cell culture ≤0.1% to eliminate cytotoxicity); lipopolysaccharide (LPS) from Escherichia coli 055:B5 was obtained from Solarbio (Beijing, China; Cat# L8880), reconstituted in sterile phosphate-buffered saline (PBS; Solarbio, Cat# P1020) to a 1 mg/mL stock solution, filtered through a 0.22 μm sterile filter (Millipore, Cat# SLGP033RB), and stored at −20°C; chloroquine (autophagy inhibition positive control) was purchased from Sigma (Cat# RNBH9960), prepared as a 50 mM stock solution in PBS, and stored at 4°C; primary antibodies against autophagy-related proteins and internal reference were sourced as follows: β-actin (Cat# 66009-1-Ig) and ATG4B (Cat# 11306-1-AP) from Proteintech, ATG7 (Cat# PA5-114334) from Thermo Fisher, PIK3C3 (also known as VPS34; Cat# 21656-1-AP), LC3B (Cat# 18725-1-AP), and p62 (also known as SQSTM1; Cat# 18420-1-AP) from Proteintech, all stored at −20°C after reconstitution according to the manufacturer’s instructions; horseradish peroxidase (HRP)-conjugated secondary antibodies (anti-rabbit: Cat# ab6721, anti-mouse: Cat# ab6789) were obtained from Abcam, stored at 4°C, and used at the recommended dilution ratio; other reagents including RIPA lysis buffer (Millipore, Cat# 20–188), protease inhibitor cocktail (Roche, Cat# 04693159001), PMSF (MedChemExpress, Cat# HY-B0496), BCA protein assay kit (Thermo Fisher, Cat# 23225), 5× SDS loading buffer (Solarbio, Cat# P1040), acrylamide (Sigma, Cat# A9099), Tris-HCl (Solarbio, Cat# T8154), SDS (Solarbio, Cat# S8010), ammonium persulfate (APS; Solarbio, Cat# A1060), TEMED (Solarbio, Cat# T8132), PVDF membranes (Millipore, Cat# IPVH00010), 5% non-fat skim milk (Solarbio, Cat# D8340), and enhanced chemiluminescence (ECL) reagent (Yeasen, Cat# 36208ES) were of analytical grade, stored at the recommended temperatures (4°C or −20°C), and used before their expiration dates. .. Cell apoptosis was quantified using an Annexin V-FITC/Propidium Iodide (PI) Apoptosis Detection Kit (Elabscience, Cat# E-CK-A211) and flow cytometry, with precise control of each step to ensure accurate results: seed HBE cells in 6-well plates at a density of 6×10 5 cells per well, culture them for 24 hours (until reaching 70–80% confluence), then replace the medium with fresh complete DMEM containing the corresponding treatments (control: no treatment; LPS: 100 ng/mL; G-Rg3: 16 μM; LPS + G-Rg3: 100 ng/mL LPS + 16 μM G-Rg3) and incubate for another 24 hours at 37°C, 5% CO 2 ; after treatment, aspirate the culture medium, rinse the cells twice with cold PBS, add 1 mL of 0.25% trypsin-EDTA (Gibco, Cat# 25200056) to each well, incubate at 37°C for 2–3 minutes until cells detach, neutralize the trypsin with 2 mL of complete DMEM, collect the cell suspension into a 15 mL centrifuge tube, centrifuge at 1000×g for 5 minutes at 4°C, discard the supernatant, wash the cell pellet twice with cold PBS (centrifuging at 1000×g for 5 minutes each time to remove residual medium and trypsin), resuspend the pellet in 100 μL of ice-cold binding buffer (provided in the detection kit), add 5 μL of Annexin V-FITC and 10 μL of PI solution (both provided in the kit) to the cell suspension, mix gently by pipetting, and incubate at room temperature in the dark for 15 minutes (avoiding prolonged incubation to prevent non-specific staining of viable cells); after incubation, add 400 μL of binding buffer to each sample to dilute the staining solution, and immediately analyze the samples using a BD FACSCanto II flow cytometer (BD Biosciences, San Jose, CA) with BD FACSDiva software (Version 8.0.1); set the detection parameters as follows: excitation wavelength of 488 nm, emission wavelength of 525 nm for Annexin V-FITC (FITC channel) and 620 nm for PI (PI channel), collect 10,000 events per sample, and use forward scatter (FSC) and side scatter (SSC) gating to exclude cell debris and non-single cells; classify the cells into four quadrants based on fluorescence signals: Q1 (necrotic cells: Annexin V-negative/PI-positive), Q2 (late apoptotic cells: Annexin V-positive/PI-positive), Q3 (viable cells: Annexin V-negative/PI-negative), and Q4 (early apoptotic cells: Annexin V-positive/PI-negative), then calculate the total apoptotic rate as the sum of the percentages of Q2 and Q4 cells.

Cell Culture:

Article Title: Ginsenoside Rg3 Mitigates LPS-Induced Injury in Human Bronchial Epithelial Cells by Restoring Autophagic Flux and Inhibiting the TLR4/NF-κB-Mediated Inflammatory Response
Article Snippet: Human bronchial epithelial (HBE) cells (ATCC, Cat# CCL-202) were used as the in vitro model, with strict control of cell handling and culture conditions to ensure experimental consistency: remove cryopreserved cells from −80°C storage, immediately immerse the cryovial in a 37°C water bath (Thermo Fisher, Model WB2000) and gently agitate for 1–2 minutes until only a small ice crystal remains, disinfect the vial surface with 75% ethanol (Solarbio, Cat# 10009218), transfer the cell suspension to a 15 mL centrifuge tube (Corning, Cat# 430791) containing 5 mL pre-warmed (37°C) complete Dulbecco’s modified Eagle’s medium (DMEM; Gibco, Cat# c11965500BT) supplemented with 10% heat-inactivated fetal bovine serum (FBS; Gibco, Cat# 10099141) and 1% penicillin-streptomycin (100 U/mL penicillin, 100 μg/mL streptomycin; Solarbio, Cat# P1400), centrifuge at 1000×g for 5 minutes at room temperature (RT), discard the supernatant, resuspend the cell pellet in 5 mL complete DMEM, count cells using a hemocytometer (Thermo Fisher, Cat# 02–671-5), seed at a density of 5×10 5 cells per T75 flask (Corning, Cat# 430641), and culture in a humidified incubator (Thermo Fisher, Model 3111) set to 37°C, 5% CO 2 , and 95% relative humidity; when cells reach 80–90% confluence (typically 48–72 hours post-seeding), perform passaging by aspirating the culture medium, rinsing twice with 5 mL pre-warmed PBS (Solarbio, Cat# P1020), adding 2 mL 0.25% trypsin-EDTA (Gibco, Cat# 25200056) and incubating at 37°C for 2–3 minutes (monitoring cell detachment under an inverted microscope), neutralizing trypsin with 4 mL complete DMEM, centrifuging at 1000×g for 5 minutes, discarding the supernatant, resuspending the cell pellet in 5 mL complete DMEM, counting again, and seeding at the required density, with only cells at passages 3–8 used for experiments (to avoid cellular senescence) and cell viability confirmed to be >95% via trypan blue staining (Solarbio, Cat# T8154) before each experiment. .. Ginsenoside Rg3 (G-Rg3) with ≥98% purity was purchased from TargetMol (Cat# T3402), dissolved in dimethyl sulfoxide (DMSO; Sigma, Cat# C6628) to prepare a 10 mM stock solution, and stored at −80°C (avoiding repeated freeze-thaw cycles, with final DMSO concentration in cell culture ≤0.1% to eliminate cytotoxicity); lipopolysaccharide (LPS) from Escherichia coli 055:B5 was obtained from Solarbio (Beijing, China; Cat# L8880), reconstituted in sterile phosphate-buffered saline (PBS; Solarbio, Cat# P1020) to a 1 mg/mL stock solution, filtered through a 0.22 μm sterile filter (Millipore, Cat# SLGP033RB), and stored at −20°C; chloroquine (autophagy inhibition positive control) was purchased from Sigma (Cat# RNBH9960), prepared as a 50 mM stock solution in PBS, and stored at 4°C; primary antibodies against autophagy-related proteins and internal reference were sourced as follows: β-actin (Cat# 66009-1-Ig) and ATG4B (Cat# 11306-1-AP) from Proteintech, ATG7 (Cat# PA5-114334) from Thermo Fisher, PIK3C3 (also known as VPS34; Cat# 21656-1-AP), LC3B (Cat# 18725-1-AP), and p62 (also known as SQSTM1; Cat# 18420-1-AP) from Proteintech, all stored at −20°C after reconstitution according to the manufacturer’s instructions; horseradish peroxidase (HRP)-conjugated secondary antibodies (anti-rabbit: Cat# ab6721, anti-mouse: Cat# ab6789) were obtained from Abcam, stored at 4°C, and used at the recommended dilution ratio; other reagents including RIPA lysis buffer (Millipore, Cat# 20–188), protease inhibitor cocktail (Roche, Cat# 04693159001), PMSF (MedChemExpress, Cat# HY-B0496), BCA protein assay kit (Thermo Fisher, Cat# 23225), 5× SDS loading buffer (Solarbio, Cat# P1040), acrylamide (Sigma, Cat# A9099), Tris-HCl (Solarbio, Cat# T8154), SDS (Solarbio, Cat# S8010), ammonium persulfate (APS; Solarbio, Cat# A1060), TEMED (Solarbio, Cat# T8132), PVDF membranes (Millipore, Cat# IPVH00010), 5% non-fat skim milk (Solarbio, Cat# D8340), and enhanced chemiluminescence (ECL) reagent (Yeasen, Cat# 36208ES) were of analytical grade, stored at the recommended temperatures (4°C or −20°C), and used before their expiration dates. .. Cell apoptosis was quantified using an Annexin V-FITC/Propidium Iodide (PI) Apoptosis Detection Kit (Elabscience, Cat# E-CK-A211) and flow cytometry, with precise control of each step to ensure accurate results: seed HBE cells in 6-well plates at a density of 6×10 5 cells per well, culture them for 24 hours (until reaching 70–80% confluence), then replace the medium with fresh complete DMEM containing the corresponding treatments (control: no treatment; LPS: 100 ng/mL; G-Rg3: 16 μM; LPS + G-Rg3: 100 ng/mL LPS + 16 μM G-Rg3) and incubate for another 24 hours at 37°C, 5% CO 2 ; after treatment, aspirate the culture medium, rinse the cells twice with cold PBS, add 1 mL of 0.25% trypsin-EDTA (Gibco, Cat# 25200056) to each well, incubate at 37°C for 2–3 minutes until cells detach, neutralize the trypsin with 2 mL of complete DMEM, collect the cell suspension into a 15 mL centrifuge tube, centrifuge at 1000×g for 5 minutes at 4°C, discard the supernatant, wash the cell pellet twice with cold PBS (centrifuging at 1000×g for 5 minutes each time to remove residual medium and trypsin), resuspend the pellet in 100 μL of ice-cold binding buffer (provided in the detection kit), add 5 μL of Annexin V-FITC and 10 μL of PI solution (both provided in the kit) to the cell suspension, mix gently by pipetting, and incubate at room temperature in the dark for 15 minutes (avoiding prolonged incubation to prevent non-specific staining of viable cells); after incubation, add 400 μL of binding buffer to each sample to dilute the staining solution, and immediately analyze the samples using a BD FACSCanto II flow cytometer (BD Biosciences, San Jose, CA) with BD FACSDiva software (Version 8.0.1); set the detection parameters as follows: excitation wavelength of 488 nm, emission wavelength of 525 nm for Annexin V-FITC (FITC channel) and 620 nm for PI (PI channel), collect 10,000 events per sample, and use forward scatter (FSC) and side scatter (SSC) gating to exclude cell debris and non-single cells; classify the cells into four quadrants based on fluorescence signals: Q1 (necrotic cells: Annexin V-negative/PI-positive), Q2 (late apoptotic cells: Annexin V-positive/PI-positive), Q3 (viable cells: Annexin V-negative/PI-negative), and Q4 (early apoptotic cells: Annexin V-positive/PI-negative), then calculate the total apoptotic rate as the sum of the percentages of Q2 and Q4 cells.

Sterility:

Article Title: Ginsenoside Rg3 Mitigates LPS-Induced Injury in Human Bronchial Epithelial Cells by Restoring Autophagic Flux and Inhibiting the TLR4/NF-κB-Mediated Inflammatory Response
Article Snippet: Human bronchial epithelial (HBE) cells (ATCC, Cat# CCL-202) were used as the in vitro model, with strict control of cell handling and culture conditions to ensure experimental consistency: remove cryopreserved cells from −80°C storage, immediately immerse the cryovial in a 37°C water bath (Thermo Fisher, Model WB2000) and gently agitate for 1–2 minutes until only a small ice crystal remains, disinfect the vial surface with 75% ethanol (Solarbio, Cat# 10009218), transfer the cell suspension to a 15 mL centrifuge tube (Corning, Cat# 430791) containing 5 mL pre-warmed (37°C) complete Dulbecco’s modified Eagle’s medium (DMEM; Gibco, Cat# c11965500BT) supplemented with 10% heat-inactivated fetal bovine serum (FBS; Gibco, Cat# 10099141) and 1% penicillin-streptomycin (100 U/mL penicillin, 100 μg/mL streptomycin; Solarbio, Cat# P1400), centrifuge at 1000×g for 5 minutes at room temperature (RT), discard the supernatant, resuspend the cell pellet in 5 mL complete DMEM, count cells using a hemocytometer (Thermo Fisher, Cat# 02–671-5), seed at a density of 5×10 5 cells per T75 flask (Corning, Cat# 430641), and culture in a humidified incubator (Thermo Fisher, Model 3111) set to 37°C, 5% CO 2 , and 95% relative humidity; when cells reach 80–90% confluence (typically 48–72 hours post-seeding), perform passaging by aspirating the culture medium, rinsing twice with 5 mL pre-warmed PBS (Solarbio, Cat# P1020), adding 2 mL 0.25% trypsin-EDTA (Gibco, Cat# 25200056) and incubating at 37°C for 2–3 minutes (monitoring cell detachment under an inverted microscope), neutralizing trypsin with 4 mL complete DMEM, centrifuging at 1000×g for 5 minutes, discarding the supernatant, resuspending the cell pellet in 5 mL complete DMEM, counting again, and seeding at the required density, with only cells at passages 3–8 used for experiments (to avoid cellular senescence) and cell viability confirmed to be >95% via trypan blue staining (Solarbio, Cat# T8154) before each experiment. .. Ginsenoside Rg3 (G-Rg3) with ≥98% purity was purchased from TargetMol (Cat# T3402), dissolved in dimethyl sulfoxide (DMSO; Sigma, Cat# C6628) to prepare a 10 mM stock solution, and stored at −80°C (avoiding repeated freeze-thaw cycles, with final DMSO concentration in cell culture ≤0.1% to eliminate cytotoxicity); lipopolysaccharide (LPS) from Escherichia coli 055:B5 was obtained from Solarbio (Beijing, China; Cat# L8880), reconstituted in sterile phosphate-buffered saline (PBS; Solarbio, Cat# P1020) to a 1 mg/mL stock solution, filtered through a 0.22 μm sterile filter (Millipore, Cat# SLGP033RB), and stored at −20°C; chloroquine (autophagy inhibition positive control) was purchased from Sigma (Cat# RNBH9960), prepared as a 50 mM stock solution in PBS, and stored at 4°C; primary antibodies against autophagy-related proteins and internal reference were sourced as follows: β-actin (Cat# 66009-1-Ig) and ATG4B (Cat# 11306-1-AP) from Proteintech, ATG7 (Cat# PA5-114334) from Thermo Fisher, PIK3C3 (also known as VPS34; Cat# 21656-1-AP), LC3B (Cat# 18725-1-AP), and p62 (also known as SQSTM1; Cat# 18420-1-AP) from Proteintech, all stored at −20°C after reconstitution according to the manufacturer’s instructions; horseradish peroxidase (HRP)-conjugated secondary antibodies (anti-rabbit: Cat# ab6721, anti-mouse: Cat# ab6789) were obtained from Abcam, stored at 4°C, and used at the recommended dilution ratio; other reagents including RIPA lysis buffer (Millipore, Cat# 20–188), protease inhibitor cocktail (Roche, Cat# 04693159001), PMSF (MedChemExpress, Cat# HY-B0496), BCA protein assay kit (Thermo Fisher, Cat# 23225), 5× SDS loading buffer (Solarbio, Cat# P1040), acrylamide (Sigma, Cat# A9099), Tris-HCl (Solarbio, Cat# T8154), SDS (Solarbio, Cat# S8010), ammonium persulfate (APS; Solarbio, Cat# A1060), TEMED (Solarbio, Cat# T8132), PVDF membranes (Millipore, Cat# IPVH00010), 5% non-fat skim milk (Solarbio, Cat# D8340), and enhanced chemiluminescence (ECL) reagent (Yeasen, Cat# 36208ES) were of analytical grade, stored at the recommended temperatures (4°C or −20°C), and used before their expiration dates. .. Cell apoptosis was quantified using an Annexin V-FITC/Propidium Iodide (PI) Apoptosis Detection Kit (Elabscience, Cat# E-CK-A211) and flow cytometry, with precise control of each step to ensure accurate results: seed HBE cells in 6-well plates at a density of 6×10 5 cells per well, culture them for 24 hours (until reaching 70–80% confluence), then replace the medium with fresh complete DMEM containing the corresponding treatments (control: no treatment; LPS: 100 ng/mL; G-Rg3: 16 μM; LPS + G-Rg3: 100 ng/mL LPS + 16 μM G-Rg3) and incubate for another 24 hours at 37°C, 5% CO 2 ; after treatment, aspirate the culture medium, rinse the cells twice with cold PBS, add 1 mL of 0.25% trypsin-EDTA (Gibco, Cat# 25200056) to each well, incubate at 37°C for 2–3 minutes until cells detach, neutralize the trypsin with 2 mL of complete DMEM, collect the cell suspension into a 15 mL centrifuge tube, centrifuge at 1000×g for 5 minutes at 4°C, discard the supernatant, wash the cell pellet twice with cold PBS (centrifuging at 1000×g for 5 minutes each time to remove residual medium and trypsin), resuspend the pellet in 100 μL of ice-cold binding buffer (provided in the detection kit), add 5 μL of Annexin V-FITC and 10 μL of PI solution (both provided in the kit) to the cell suspension, mix gently by pipetting, and incubate at room temperature in the dark for 15 minutes (avoiding prolonged incubation to prevent non-specific staining of viable cells); after incubation, add 400 μL of binding buffer to each sample to dilute the staining solution, and immediately analyze the samples using a BD FACSCanto II flow cytometer (BD Biosciences, San Jose, CA) with BD FACSDiva software (Version 8.0.1); set the detection parameters as follows: excitation wavelength of 488 nm, emission wavelength of 525 nm for Annexin V-FITC (FITC channel) and 620 nm for PI (PI channel), collect 10,000 events per sample, and use forward scatter (FSC) and side scatter (SSC) gating to exclude cell debris and non-single cells; classify the cells into four quadrants based on fluorescence signals: Q1 (necrotic cells: Annexin V-negative/PI-positive), Q2 (late apoptotic cells: Annexin V-positive/PI-positive), Q3 (viable cells: Annexin V-negative/PI-negative), and Q4 (early apoptotic cells: Annexin V-positive/PI-negative), then calculate the total apoptotic rate as the sum of the percentages of Q2 and Q4 cells.

Saline:

Article Title: Ginsenoside Rg3 Mitigates LPS-Induced Injury in Human Bronchial Epithelial Cells by Restoring Autophagic Flux and Inhibiting the TLR4/NF-κB-Mediated Inflammatory Response
Article Snippet: Human bronchial epithelial (HBE) cells (ATCC, Cat# CCL-202) were used as the in vitro model, with strict control of cell handling and culture conditions to ensure experimental consistency: remove cryopreserved cells from −80°C storage, immediately immerse the cryovial in a 37°C water bath (Thermo Fisher, Model WB2000) and gently agitate for 1–2 minutes until only a small ice crystal remains, disinfect the vial surface with 75% ethanol (Solarbio, Cat# 10009218), transfer the cell suspension to a 15 mL centrifuge tube (Corning, Cat# 430791) containing 5 mL pre-warmed (37°C) complete Dulbecco’s modified Eagle’s medium (DMEM; Gibco, Cat# c11965500BT) supplemented with 10% heat-inactivated fetal bovine serum (FBS; Gibco, Cat# 10099141) and 1% penicillin-streptomycin (100 U/mL penicillin, 100 μg/mL streptomycin; Solarbio, Cat# P1400), centrifuge at 1000×g for 5 minutes at room temperature (RT), discard the supernatant, resuspend the cell pellet in 5 mL complete DMEM, count cells using a hemocytometer (Thermo Fisher, Cat# 02–671-5), seed at a density of 5×10 5 cells per T75 flask (Corning, Cat# 430641), and culture in a humidified incubator (Thermo Fisher, Model 3111) set to 37°C, 5% CO 2 , and 95% relative humidity; when cells reach 80–90% confluence (typically 48–72 hours post-seeding), perform passaging by aspirating the culture medium, rinsing twice with 5 mL pre-warmed PBS (Solarbio, Cat# P1020), adding 2 mL 0.25% trypsin-EDTA (Gibco, Cat# 25200056) and incubating at 37°C for 2–3 minutes (monitoring cell detachment under an inverted microscope), neutralizing trypsin with 4 mL complete DMEM, centrifuging at 1000×g for 5 minutes, discarding the supernatant, resuspending the cell pellet in 5 mL complete DMEM, counting again, and seeding at the required density, with only cells at passages 3–8 used for experiments (to avoid cellular senescence) and cell viability confirmed to be >95% via trypan blue staining (Solarbio, Cat# T8154) before each experiment. .. Ginsenoside Rg3 (G-Rg3) with ≥98% purity was purchased from TargetMol (Cat# T3402), dissolved in dimethyl sulfoxide (DMSO; Sigma, Cat# C6628) to prepare a 10 mM stock solution, and stored at −80°C (avoiding repeated freeze-thaw cycles, with final DMSO concentration in cell culture ≤0.1% to eliminate cytotoxicity); lipopolysaccharide (LPS) from Escherichia coli 055:B5 was obtained from Solarbio (Beijing, China; Cat# L8880), reconstituted in sterile phosphate-buffered saline (PBS; Solarbio, Cat# P1020) to a 1 mg/mL stock solution, filtered through a 0.22 μm sterile filter (Millipore, Cat# SLGP033RB), and stored at −20°C; chloroquine (autophagy inhibition positive control) was purchased from Sigma (Cat# RNBH9960), prepared as a 50 mM stock solution in PBS, and stored at 4°C; primary antibodies against autophagy-related proteins and internal reference were sourced as follows: β-actin (Cat# 66009-1-Ig) and ATG4B (Cat# 11306-1-AP) from Proteintech, ATG7 (Cat# PA5-114334) from Thermo Fisher, PIK3C3 (also known as VPS34; Cat# 21656-1-AP), LC3B (Cat# 18725-1-AP), and p62 (also known as SQSTM1; Cat# 18420-1-AP) from Proteintech, all stored at −20°C after reconstitution according to the manufacturer’s instructions; horseradish peroxidase (HRP)-conjugated secondary antibodies (anti-rabbit: Cat# ab6721, anti-mouse: Cat# ab6789) were obtained from Abcam, stored at 4°C, and used at the recommended dilution ratio; other reagents including RIPA lysis buffer (Millipore, Cat# 20–188), protease inhibitor cocktail (Roche, Cat# 04693159001), PMSF (MedChemExpress, Cat# HY-B0496), BCA protein assay kit (Thermo Fisher, Cat# 23225), 5× SDS loading buffer (Solarbio, Cat# P1040), acrylamide (Sigma, Cat# A9099), Tris-HCl (Solarbio, Cat# T8154), SDS (Solarbio, Cat# S8010), ammonium persulfate (APS; Solarbio, Cat# A1060), TEMED (Solarbio, Cat# T8132), PVDF membranes (Millipore, Cat# IPVH00010), 5% non-fat skim milk (Solarbio, Cat# D8340), and enhanced chemiluminescence (ECL) reagent (Yeasen, Cat# 36208ES) were of analytical grade, stored at the recommended temperatures (4°C or −20°C), and used before their expiration dates. .. Cell apoptosis was quantified using an Annexin V-FITC/Propidium Iodide (PI) Apoptosis Detection Kit (Elabscience, Cat# E-CK-A211) and flow cytometry, with precise control of each step to ensure accurate results: seed HBE cells in 6-well plates at a density of 6×10 5 cells per well, culture them for 24 hours (until reaching 70–80% confluence), then replace the medium with fresh complete DMEM containing the corresponding treatments (control: no treatment; LPS: 100 ng/mL; G-Rg3: 16 μM; LPS + G-Rg3: 100 ng/mL LPS + 16 μM G-Rg3) and incubate for another 24 hours at 37°C, 5% CO 2 ; after treatment, aspirate the culture medium, rinse the cells twice with cold PBS, add 1 mL of 0.25% trypsin-EDTA (Gibco, Cat# 25200056) to each well, incubate at 37°C for 2–3 minutes until cells detach, neutralize the trypsin with 2 mL of complete DMEM, collect the cell suspension into a 15 mL centrifuge tube, centrifuge at 1000×g for 5 minutes at 4°C, discard the supernatant, wash the cell pellet twice with cold PBS (centrifuging at 1000×g for 5 minutes each time to remove residual medium and trypsin), resuspend the pellet in 100 μL of ice-cold binding buffer (provided in the detection kit), add 5 μL of Annexin V-FITC and 10 μL of PI solution (both provided in the kit) to the cell suspension, mix gently by pipetting, and incubate at room temperature in the dark for 15 minutes (avoiding prolonged incubation to prevent non-specific staining of viable cells); after incubation, add 400 μL of binding buffer to each sample to dilute the staining solution, and immediately analyze the samples using a BD FACSCanto II flow cytometer (BD Biosciences, San Jose, CA) with BD FACSDiva software (Version 8.0.1); set the detection parameters as follows: excitation wavelength of 488 nm, emission wavelength of 525 nm for Annexin V-FITC (FITC channel) and 620 nm for PI (PI channel), collect 10,000 events per sample, and use forward scatter (FSC) and side scatter (SSC) gating to exclude cell debris and non-single cells; classify the cells into four quadrants based on fluorescence signals: Q1 (necrotic cells: Annexin V-negative/PI-positive), Q2 (late apoptotic cells: Annexin V-positive/PI-positive), Q3 (viable cells: Annexin V-negative/PI-negative), and Q4 (early apoptotic cells: Annexin V-positive/PI-negative), then calculate the total apoptotic rate as the sum of the percentages of Q2 and Q4 cells.

Inhibition:

Article Title: Ginsenoside Rg3 Mitigates LPS-Induced Injury in Human Bronchial Epithelial Cells by Restoring Autophagic Flux and Inhibiting the TLR4/NF-κB-Mediated Inflammatory Response
Article Snippet: Human bronchial epithelial (HBE) cells (ATCC, Cat# CCL-202) were used as the in vitro model, with strict control of cell handling and culture conditions to ensure experimental consistency: remove cryopreserved cells from −80°C storage, immediately immerse the cryovial in a 37°C water bath (Thermo Fisher, Model WB2000) and gently agitate for 1–2 minutes until only a small ice crystal remains, disinfect the vial surface with 75% ethanol (Solarbio, Cat# 10009218), transfer the cell suspension to a 15 mL centrifuge tube (Corning, Cat# 430791) containing 5 mL pre-warmed (37°C) complete Dulbecco’s modified Eagle’s medium (DMEM; Gibco, Cat# c11965500BT) supplemented with 10% heat-inactivated fetal bovine serum (FBS; Gibco, Cat# 10099141) and 1% penicillin-streptomycin (100 U/mL penicillin, 100 μg/mL streptomycin; Solarbio, Cat# P1400), centrifuge at 1000×g for 5 minutes at room temperature (RT), discard the supernatant, resuspend the cell pellet in 5 mL complete DMEM, count cells using a hemocytometer (Thermo Fisher, Cat# 02–671-5), seed at a density of 5×10 5 cells per T75 flask (Corning, Cat# 430641), and culture in a humidified incubator (Thermo Fisher, Model 3111) set to 37°C, 5% CO 2 , and 95% relative humidity; when cells reach 80–90% confluence (typically 48–72 hours post-seeding), perform passaging by aspirating the culture medium, rinsing twice with 5 mL pre-warmed PBS (Solarbio, Cat# P1020), adding 2 mL 0.25% trypsin-EDTA (Gibco, Cat# 25200056) and incubating at 37°C for 2–3 minutes (monitoring cell detachment under an inverted microscope), neutralizing trypsin with 4 mL complete DMEM, centrifuging at 1000×g for 5 minutes, discarding the supernatant, resuspending the cell pellet in 5 mL complete DMEM, counting again, and seeding at the required density, with only cells at passages 3–8 used for experiments (to avoid cellular senescence) and cell viability confirmed to be >95% via trypan blue staining (Solarbio, Cat# T8154) before each experiment. .. Ginsenoside Rg3 (G-Rg3) with ≥98% purity was purchased from TargetMol (Cat# T3402), dissolved in dimethyl sulfoxide (DMSO; Sigma, Cat# C6628) to prepare a 10 mM stock solution, and stored at −80°C (avoiding repeated freeze-thaw cycles, with final DMSO concentration in cell culture ≤0.1% to eliminate cytotoxicity); lipopolysaccharide (LPS) from Escherichia coli 055:B5 was obtained from Solarbio (Beijing, China; Cat# L8880), reconstituted in sterile phosphate-buffered saline (PBS; Solarbio, Cat# P1020) to a 1 mg/mL stock solution, filtered through a 0.22 μm sterile filter (Millipore, Cat# SLGP033RB), and stored at −20°C; chloroquine (autophagy inhibition positive control) was purchased from Sigma (Cat# RNBH9960), prepared as a 50 mM stock solution in PBS, and stored at 4°C; primary antibodies against autophagy-related proteins and internal reference were sourced as follows: β-actin (Cat# 66009-1-Ig) and ATG4B (Cat# 11306-1-AP) from Proteintech, ATG7 (Cat# PA5-114334) from Thermo Fisher, PIK3C3 (also known as VPS34; Cat# 21656-1-AP), LC3B (Cat# 18725-1-AP), and p62 (also known as SQSTM1; Cat# 18420-1-AP) from Proteintech, all stored at −20°C after reconstitution according to the manufacturer’s instructions; horseradish peroxidase (HRP)-conjugated secondary antibodies (anti-rabbit: Cat# ab6721, anti-mouse: Cat# ab6789) were obtained from Abcam, stored at 4°C, and used at the recommended dilution ratio; other reagents including RIPA lysis buffer (Millipore, Cat# 20–188), protease inhibitor cocktail (Roche, Cat# 04693159001), PMSF (MedChemExpress, Cat# HY-B0496), BCA protein assay kit (Thermo Fisher, Cat# 23225), 5× SDS loading buffer (Solarbio, Cat# P1040), acrylamide (Sigma, Cat# A9099), Tris-HCl (Solarbio, Cat# T8154), SDS (Solarbio, Cat# S8010), ammonium persulfate (APS; Solarbio, Cat# A1060), TEMED (Solarbio, Cat# T8132), PVDF membranes (Millipore, Cat# IPVH00010), 5% non-fat skim milk (Solarbio, Cat# D8340), and enhanced chemiluminescence (ECL) reagent (Yeasen, Cat# 36208ES) were of analytical grade, stored at the recommended temperatures (4°C or −20°C), and used before their expiration dates. .. Cell apoptosis was quantified using an Annexin V-FITC/Propidium Iodide (PI) Apoptosis Detection Kit (Elabscience, Cat# E-CK-A211) and flow cytometry, with precise control of each step to ensure accurate results: seed HBE cells in 6-well plates at a density of 6×10 5 cells per well, culture them for 24 hours (until reaching 70–80% confluence), then replace the medium with fresh complete DMEM containing the corresponding treatments (control: no treatment; LPS: 100 ng/mL; G-Rg3: 16 μM; LPS + G-Rg3: 100 ng/mL LPS + 16 μM G-Rg3) and incubate for another 24 hours at 37°C, 5% CO 2 ; after treatment, aspirate the culture medium, rinse the cells twice with cold PBS, add 1 mL of 0.25% trypsin-EDTA (Gibco, Cat# 25200056) to each well, incubate at 37°C for 2–3 minutes until cells detach, neutralize the trypsin with 2 mL of complete DMEM, collect the cell suspension into a 15 mL centrifuge tube, centrifuge at 1000×g for 5 minutes at 4°C, discard the supernatant, wash the cell pellet twice with cold PBS (centrifuging at 1000×g for 5 minutes each time to remove residual medium and trypsin), resuspend the pellet in 100 μL of ice-cold binding buffer (provided in the detection kit), add 5 μL of Annexin V-FITC and 10 μL of PI solution (both provided in the kit) to the cell suspension, mix gently by pipetting, and incubate at room temperature in the dark for 15 minutes (avoiding prolonged incubation to prevent non-specific staining of viable cells); after incubation, add 400 μL of binding buffer to each sample to dilute the staining solution, and immediately analyze the samples using a BD FACSCanto II flow cytometer (BD Biosciences, San Jose, CA) with BD FACSDiva software (Version 8.0.1); set the detection parameters as follows: excitation wavelength of 488 nm, emission wavelength of 525 nm for Annexin V-FITC (FITC channel) and 620 nm for PI (PI channel), collect 10,000 events per sample, and use forward scatter (FSC) and side scatter (SSC) gating to exclude cell debris and non-single cells; classify the cells into four quadrants based on fluorescence signals: Q1 (necrotic cells: Annexin V-negative/PI-positive), Q2 (late apoptotic cells: Annexin V-positive/PI-positive), Q3 (viable cells: Annexin V-negative/PI-negative), and Q4 (early apoptotic cells: Annexin V-positive/PI-negative), then calculate the total apoptotic rate as the sum of the percentages of Q2 and Q4 cells.

Positive Control:

Article Title: Ginsenoside Rg3 Mitigates LPS-Induced Injury in Human Bronchial Epithelial Cells by Restoring Autophagic Flux and Inhibiting the TLR4/NF-κB-Mediated Inflammatory Response
Article Snippet: Human bronchial epithelial (HBE) cells (ATCC, Cat# CCL-202) were used as the in vitro model, with strict control of cell handling and culture conditions to ensure experimental consistency: remove cryopreserved cells from −80°C storage, immediately immerse the cryovial in a 37°C water bath (Thermo Fisher, Model WB2000) and gently agitate for 1–2 minutes until only a small ice crystal remains, disinfect the vial surface with 75% ethanol (Solarbio, Cat# 10009218), transfer the cell suspension to a 15 mL centrifuge tube (Corning, Cat# 430791) containing 5 mL pre-warmed (37°C) complete Dulbecco’s modified Eagle’s medium (DMEM; Gibco, Cat# c11965500BT) supplemented with 10% heat-inactivated fetal bovine serum (FBS; Gibco, Cat# 10099141) and 1% penicillin-streptomycin (100 U/mL penicillin, 100 μg/mL streptomycin; Solarbio, Cat# P1400), centrifuge at 1000×g for 5 minutes at room temperature (RT), discard the supernatant, resuspend the cell pellet in 5 mL complete DMEM, count cells using a hemocytometer (Thermo Fisher, Cat# 02–671-5), seed at a density of 5×10 5 cells per T75 flask (Corning, Cat# 430641), and culture in a humidified incubator (Thermo Fisher, Model 3111) set to 37°C, 5% CO 2 , and 95% relative humidity; when cells reach 80–90% confluence (typically 48–72 hours post-seeding), perform passaging by aspirating the culture medium, rinsing twice with 5 mL pre-warmed PBS (Solarbio, Cat# P1020), adding 2 mL 0.25% trypsin-EDTA (Gibco, Cat# 25200056) and incubating at 37°C for 2–3 minutes (monitoring cell detachment under an inverted microscope), neutralizing trypsin with 4 mL complete DMEM, centrifuging at 1000×g for 5 minutes, discarding the supernatant, resuspending the cell pellet in 5 mL complete DMEM, counting again, and seeding at the required density, with only cells at passages 3–8 used for experiments (to avoid cellular senescence) and cell viability confirmed to be >95% via trypan blue staining (Solarbio, Cat# T8154) before each experiment. .. Ginsenoside Rg3 (G-Rg3) with ≥98% purity was purchased from TargetMol (Cat# T3402), dissolved in dimethyl sulfoxide (DMSO; Sigma, Cat# C6628) to prepare a 10 mM stock solution, and stored at −80°C (avoiding repeated freeze-thaw cycles, with final DMSO concentration in cell culture ≤0.1% to eliminate cytotoxicity); lipopolysaccharide (LPS) from Escherichia coli 055:B5 was obtained from Solarbio (Beijing, China; Cat# L8880), reconstituted in sterile phosphate-buffered saline (PBS; Solarbio, Cat# P1020) to a 1 mg/mL stock solution, filtered through a 0.22 μm sterile filter (Millipore, Cat# SLGP033RB), and stored at −20°C; chloroquine (autophagy inhibition positive control) was purchased from Sigma (Cat# RNBH9960), prepared as a 50 mM stock solution in PBS, and stored at 4°C; primary antibodies against autophagy-related proteins and internal reference were sourced as follows: β-actin (Cat# 66009-1-Ig) and ATG4B (Cat# 11306-1-AP) from Proteintech, ATG7 (Cat# PA5-114334) from Thermo Fisher, PIK3C3 (also known as VPS34; Cat# 21656-1-AP), LC3B (Cat# 18725-1-AP), and p62 (also known as SQSTM1; Cat# 18420-1-AP) from Proteintech, all stored at −20°C after reconstitution according to the manufacturer’s instructions; horseradish peroxidase (HRP)-conjugated secondary antibodies (anti-rabbit: Cat# ab6721, anti-mouse: Cat# ab6789) were obtained from Abcam, stored at 4°C, and used at the recommended dilution ratio; other reagents including RIPA lysis buffer (Millipore, Cat# 20–188), protease inhibitor cocktail (Roche, Cat# 04693159001), PMSF (MedChemExpress, Cat# HY-B0496), BCA protein assay kit (Thermo Fisher, Cat# 23225), 5× SDS loading buffer (Solarbio, Cat# P1040), acrylamide (Sigma, Cat# A9099), Tris-HCl (Solarbio, Cat# T8154), SDS (Solarbio, Cat# S8010), ammonium persulfate (APS; Solarbio, Cat# A1060), TEMED (Solarbio, Cat# T8132), PVDF membranes (Millipore, Cat# IPVH00010), 5% non-fat skim milk (Solarbio, Cat# D8340), and enhanced chemiluminescence (ECL) reagent (Yeasen, Cat# 36208ES) were of analytical grade, stored at the recommended temperatures (4°C or −20°C), and used before their expiration dates. .. Cell apoptosis was quantified using an Annexin V-FITC/Propidium Iodide (PI) Apoptosis Detection Kit (Elabscience, Cat# E-CK-A211) and flow cytometry, with precise control of each step to ensure accurate results: seed HBE cells in 6-well plates at a density of 6×10 5 cells per well, culture them for 24 hours (until reaching 70–80% confluence), then replace the medium with fresh complete DMEM containing the corresponding treatments (control: no treatment; LPS: 100 ng/mL; G-Rg3: 16 μM; LPS + G-Rg3: 100 ng/mL LPS + 16 μM G-Rg3) and incubate for another 24 hours at 37°C, 5% CO 2 ; after treatment, aspirate the culture medium, rinse the cells twice with cold PBS, add 1 mL of 0.25% trypsin-EDTA (Gibco, Cat# 25200056) to each well, incubate at 37°C for 2–3 minutes until cells detach, neutralize the trypsin with 2 mL of complete DMEM, collect the cell suspension into a 15 mL centrifuge tube, centrifuge at 1000×g for 5 minutes at 4°C, discard the supernatant, wash the cell pellet twice with cold PBS (centrifuging at 1000×g for 5 minutes each time to remove residual medium and trypsin), resuspend the pellet in 100 μL of ice-cold binding buffer (provided in the detection kit), add 5 μL of Annexin V-FITC and 10 μL of PI solution (both provided in the kit) to the cell suspension, mix gently by pipetting, and incubate at room temperature in the dark for 15 minutes (avoiding prolonged incubation to prevent non-specific staining of viable cells); after incubation, add 400 μL of binding buffer to each sample to dilute the staining solution, and immediately analyze the samples using a BD FACSCanto II flow cytometer (BD Biosciences, San Jose, CA) with BD FACSDiva software (Version 8.0.1); set the detection parameters as follows: excitation wavelength of 488 nm, emission wavelength of 525 nm for Annexin V-FITC (FITC channel) and 620 nm for PI (PI channel), collect 10,000 events per sample, and use forward scatter (FSC) and side scatter (SSC) gating to exclude cell debris and non-single cells; classify the cells into four quadrants based on fluorescence signals: Q1 (necrotic cells: Annexin V-negative/PI-positive), Q2 (late apoptotic cells: Annexin V-positive/PI-positive), Q3 (viable cells: Annexin V-negative/PI-negative), and Q4 (early apoptotic cells: Annexin V-positive/PI-negative), then calculate the total apoptotic rate as the sum of the percentages of Q2 and Q4 cells.

Lysis:

Article Title: Ginsenoside Rg3 Mitigates LPS-Induced Injury in Human Bronchial Epithelial Cells by Restoring Autophagic Flux and Inhibiting the TLR4/NF-κB-Mediated Inflammatory Response
Article Snippet: Human bronchial epithelial (HBE) cells (ATCC, Cat# CCL-202) were used as the in vitro model, with strict control of cell handling and culture conditions to ensure experimental consistency: remove cryopreserved cells from −80°C storage, immediately immerse the cryovial in a 37°C water bath (Thermo Fisher, Model WB2000) and gently agitate for 1–2 minutes until only a small ice crystal remains, disinfect the vial surface with 75% ethanol (Solarbio, Cat# 10009218), transfer the cell suspension to a 15 mL centrifuge tube (Corning, Cat# 430791) containing 5 mL pre-warmed (37°C) complete Dulbecco’s modified Eagle’s medium (DMEM; Gibco, Cat# c11965500BT) supplemented with 10% heat-inactivated fetal bovine serum (FBS; Gibco, Cat# 10099141) and 1% penicillin-streptomycin (100 U/mL penicillin, 100 μg/mL streptomycin; Solarbio, Cat# P1400), centrifuge at 1000×g for 5 minutes at room temperature (RT), discard the supernatant, resuspend the cell pellet in 5 mL complete DMEM, count cells using a hemocytometer (Thermo Fisher, Cat# 02–671-5), seed at a density of 5×10 5 cells per T75 flask (Corning, Cat# 430641), and culture in a humidified incubator (Thermo Fisher, Model 3111) set to 37°C, 5% CO 2 , and 95% relative humidity; when cells reach 80–90% confluence (typically 48–72 hours post-seeding), perform passaging by aspirating the culture medium, rinsing twice with 5 mL pre-warmed PBS (Solarbio, Cat# P1020), adding 2 mL 0.25% trypsin-EDTA (Gibco, Cat# 25200056) and incubating at 37°C for 2–3 minutes (monitoring cell detachment under an inverted microscope), neutralizing trypsin with 4 mL complete DMEM, centrifuging at 1000×g for 5 minutes, discarding the supernatant, resuspending the cell pellet in 5 mL complete DMEM, counting again, and seeding at the required density, with only cells at passages 3–8 used for experiments (to avoid cellular senescence) and cell viability confirmed to be >95% via trypan blue staining (Solarbio, Cat# T8154) before each experiment. .. Ginsenoside Rg3 (G-Rg3) with ≥98% purity was purchased from TargetMol (Cat# T3402), dissolved in dimethyl sulfoxide (DMSO; Sigma, Cat# C6628) to prepare a 10 mM stock solution, and stored at −80°C (avoiding repeated freeze-thaw cycles, with final DMSO concentration in cell culture ≤0.1% to eliminate cytotoxicity); lipopolysaccharide (LPS) from Escherichia coli 055:B5 was obtained from Solarbio (Beijing, China; Cat# L8880), reconstituted in sterile phosphate-buffered saline (PBS; Solarbio, Cat# P1020) to a 1 mg/mL stock solution, filtered through a 0.22 μm sterile filter (Millipore, Cat# SLGP033RB), and stored at −20°C; chloroquine (autophagy inhibition positive control) was purchased from Sigma (Cat# RNBH9960), prepared as a 50 mM stock solution in PBS, and stored at 4°C; primary antibodies against autophagy-related proteins and internal reference were sourced as follows: β-actin (Cat# 66009-1-Ig) and ATG4B (Cat# 11306-1-AP) from Proteintech, ATG7 (Cat# PA5-114334) from Thermo Fisher, PIK3C3 (also known as VPS34; Cat# 21656-1-AP), LC3B (Cat# 18725-1-AP), and p62 (also known as SQSTM1; Cat# 18420-1-AP) from Proteintech, all stored at −20°C after reconstitution according to the manufacturer’s instructions; horseradish peroxidase (HRP)-conjugated secondary antibodies (anti-rabbit: Cat# ab6721, anti-mouse: Cat# ab6789) were obtained from Abcam, stored at 4°C, and used at the recommended dilution ratio; other reagents including RIPA lysis buffer (Millipore, Cat# 20–188), protease inhibitor cocktail (Roche, Cat# 04693159001), PMSF (MedChemExpress, Cat# HY-B0496), BCA protein assay kit (Thermo Fisher, Cat# 23225), 5× SDS loading buffer (Solarbio, Cat# P1040), acrylamide (Sigma, Cat# A9099), Tris-HCl (Solarbio, Cat# T8154), SDS (Solarbio, Cat# S8010), ammonium persulfate (APS; Solarbio, Cat# A1060), TEMED (Solarbio, Cat# T8132), PVDF membranes (Millipore, Cat# IPVH00010), 5% non-fat skim milk (Solarbio, Cat# D8340), and enhanced chemiluminescence (ECL) reagent (Yeasen, Cat# 36208ES) were of analytical grade, stored at the recommended temperatures (4°C or −20°C), and used before their expiration dates. .. Cell apoptosis was quantified using an Annexin V-FITC/Propidium Iodide (PI) Apoptosis Detection Kit (Elabscience, Cat# E-CK-A211) and flow cytometry, with precise control of each step to ensure accurate results: seed HBE cells in 6-well plates at a density of 6×10 5 cells per well, culture them for 24 hours (until reaching 70–80% confluence), then replace the medium with fresh complete DMEM containing the corresponding treatments (control: no treatment; LPS: 100 ng/mL; G-Rg3: 16 μM; LPS + G-Rg3: 100 ng/mL LPS + 16 μM G-Rg3) and incubate for another 24 hours at 37°C, 5% CO 2 ; after treatment, aspirate the culture medium, rinse the cells twice with cold PBS, add 1 mL of 0.25% trypsin-EDTA (Gibco, Cat# 25200056) to each well, incubate at 37°C for 2–3 minutes until cells detach, neutralize the trypsin with 2 mL of complete DMEM, collect the cell suspension into a 15 mL centrifuge tube, centrifuge at 1000×g for 5 minutes at 4°C, discard the supernatant, wash the cell pellet twice with cold PBS (centrifuging at 1000×g for 5 minutes each time to remove residual medium and trypsin), resuspend the pellet in 100 μL of ice-cold binding buffer (provided in the detection kit), add 5 μL of Annexin V-FITC and 10 μL of PI solution (both provided in the kit) to the cell suspension, mix gently by pipetting, and incubate at room temperature in the dark for 15 minutes (avoiding prolonged incubation to prevent non-specific staining of viable cells); after incubation, add 400 μL of binding buffer to each sample to dilute the staining solution, and immediately analyze the samples using a BD FACSCanto II flow cytometer (BD Biosciences, San Jose, CA) with BD FACSDiva software (Version 8.0.1); set the detection parameters as follows: excitation wavelength of 488 nm, emission wavelength of 525 nm for Annexin V-FITC (FITC channel) and 620 nm for PI (PI channel), collect 10,000 events per sample, and use forward scatter (FSC) and side scatter (SSC) gating to exclude cell debris and non-single cells; classify the cells into four quadrants based on fluorescence signals: Q1 (necrotic cells: Annexin V-negative/PI-positive), Q2 (late apoptotic cells: Annexin V-positive/PI-positive), Q3 (viable cells: Annexin V-negative/PI-negative), and Q4 (early apoptotic cells: Annexin V-positive/PI-negative), then calculate the total apoptotic rate as the sum of the percentages of Q2 and Q4 cells.

Protease Inhibitor:

Article Title: Ginsenoside Rg3 Mitigates LPS-Induced Injury in Human Bronchial Epithelial Cells by Restoring Autophagic Flux and Inhibiting the TLR4/NF-κB-Mediated Inflammatory Response
Article Snippet: Human bronchial epithelial (HBE) cells (ATCC, Cat# CCL-202) were used as the in vitro model, with strict control of cell handling and culture conditions to ensure experimental consistency: remove cryopreserved cells from −80°C storage, immediately immerse the cryovial in a 37°C water bath (Thermo Fisher, Model WB2000) and gently agitate for 1–2 minutes until only a small ice crystal remains, disinfect the vial surface with 75% ethanol (Solarbio, Cat# 10009218), transfer the cell suspension to a 15 mL centrifuge tube (Corning, Cat# 430791) containing 5 mL pre-warmed (37°C) complete Dulbecco’s modified Eagle’s medium (DMEM; Gibco, Cat# c11965500BT) supplemented with 10% heat-inactivated fetal bovine serum (FBS; Gibco, Cat# 10099141) and 1% penicillin-streptomycin (100 U/mL penicillin, 100 μg/mL streptomycin; Solarbio, Cat# P1400), centrifuge at 1000×g for 5 minutes at room temperature (RT), discard the supernatant, resuspend the cell pellet in 5 mL complete DMEM, count cells using a hemocytometer (Thermo Fisher, Cat# 02–671-5), seed at a density of 5×10 5 cells per T75 flask (Corning, Cat# 430641), and culture in a humidified incubator (Thermo Fisher, Model 3111) set to 37°C, 5% CO 2 , and 95% relative humidity; when cells reach 80–90% confluence (typically 48–72 hours post-seeding), perform passaging by aspirating the culture medium, rinsing twice with 5 mL pre-warmed PBS (Solarbio, Cat# P1020), adding 2 mL 0.25% trypsin-EDTA (Gibco, Cat# 25200056) and incubating at 37°C for 2–3 minutes (monitoring cell detachment under an inverted microscope), neutralizing trypsin with 4 mL complete DMEM, centrifuging at 1000×g for 5 minutes, discarding the supernatant, resuspending the cell pellet in 5 mL complete DMEM, counting again, and seeding at the required density, with only cells at passages 3–8 used for experiments (to avoid cellular senescence) and cell viability confirmed to be >95% via trypan blue staining (Solarbio, Cat# T8154) before each experiment. .. Ginsenoside Rg3 (G-Rg3) with ≥98% purity was purchased from TargetMol (Cat# T3402), dissolved in dimethyl sulfoxide (DMSO; Sigma, Cat# C6628) to prepare a 10 mM stock solution, and stored at −80°C (avoiding repeated freeze-thaw cycles, with final DMSO concentration in cell culture ≤0.1% to eliminate cytotoxicity); lipopolysaccharide (LPS) from Escherichia coli 055:B5 was obtained from Solarbio (Beijing, China; Cat# L8880), reconstituted in sterile phosphate-buffered saline (PBS; Solarbio, Cat# P1020) to a 1 mg/mL stock solution, filtered through a 0.22 μm sterile filter (Millipore, Cat# SLGP033RB), and stored at −20°C; chloroquine (autophagy inhibition positive control) was purchased from Sigma (Cat# RNBH9960), prepared as a 50 mM stock solution in PBS, and stored at 4°C; primary antibodies against autophagy-related proteins and internal reference were sourced as follows: β-actin (Cat# 66009-1-Ig) and ATG4B (Cat# 11306-1-AP) from Proteintech, ATG7 (Cat# PA5-114334) from Thermo Fisher, PIK3C3 (also known as VPS34; Cat# 21656-1-AP), LC3B (Cat# 18725-1-AP), and p62 (also known as SQSTM1; Cat# 18420-1-AP) from Proteintech, all stored at −20°C after reconstitution according to the manufacturer’s instructions; horseradish peroxidase (HRP)-conjugated secondary antibodies (anti-rabbit: Cat# ab6721, anti-mouse: Cat# ab6789) were obtained from Abcam, stored at 4°C, and used at the recommended dilution ratio; other reagents including RIPA lysis buffer (Millipore, Cat# 20–188), protease inhibitor cocktail (Roche, Cat# 04693159001), PMSF (MedChemExpress, Cat# HY-B0496), BCA protein assay kit (Thermo Fisher, Cat# 23225), 5× SDS loading buffer (Solarbio, Cat# P1040), acrylamide (Sigma, Cat# A9099), Tris-HCl (Solarbio, Cat# T8154), SDS (Solarbio, Cat# S8010), ammonium persulfate (APS; Solarbio, Cat# A1060), TEMED (Solarbio, Cat# T8132), PVDF membranes (Millipore, Cat# IPVH00010), 5% non-fat skim milk (Solarbio, Cat# D8340), and enhanced chemiluminescence (ECL) reagent (Yeasen, Cat# 36208ES) were of analytical grade, stored at the recommended temperatures (4°C or −20°C), and used before their expiration dates. .. Cell apoptosis was quantified using an Annexin V-FITC/Propidium Iodide (PI) Apoptosis Detection Kit (Elabscience, Cat# E-CK-A211) and flow cytometry, with precise control of each step to ensure accurate results: seed HBE cells in 6-well plates at a density of 6×10 5 cells per well, culture them for 24 hours (until reaching 70–80% confluence), then replace the medium with fresh complete DMEM containing the corresponding treatments (control: no treatment; LPS: 100 ng/mL; G-Rg3: 16 μM; LPS + G-Rg3: 100 ng/mL LPS + 16 μM G-Rg3) and incubate for another 24 hours at 37°C, 5% CO 2 ; after treatment, aspirate the culture medium, rinse the cells twice with cold PBS, add 1 mL of 0.25% trypsin-EDTA (Gibco, Cat# 25200056) to each well, incubate at 37°C for 2–3 minutes until cells detach, neutralize the trypsin with 2 mL of complete DMEM, collect the cell suspension into a 15 mL centrifuge tube, centrifuge at 1000×g for 5 minutes at 4°C, discard the supernatant, wash the cell pellet twice with cold PBS (centrifuging at 1000×g for 5 minutes each time to remove residual medium and trypsin), resuspend the pellet in 100 μL of ice-cold binding buffer (provided in the detection kit), add 5 μL of Annexin V-FITC and 10 μL of PI solution (both provided in the kit) to the cell suspension, mix gently by pipetting, and incubate at room temperature in the dark for 15 minutes (avoiding prolonged incubation to prevent non-specific staining of viable cells); after incubation, add 400 μL of binding buffer to each sample to dilute the staining solution, and immediately analyze the samples using a BD FACSCanto II flow cytometer (BD Biosciences, San Jose, CA) with BD FACSDiva software (Version 8.0.1); set the detection parameters as follows: excitation wavelength of 488 nm, emission wavelength of 525 nm for Annexin V-FITC (FITC channel) and 620 nm for PI (PI channel), collect 10,000 events per sample, and use forward scatter (FSC) and side scatter (SSC) gating to exclude cell debris and non-single cells; classify the cells into four quadrants based on fluorescence signals: Q1 (necrotic cells: Annexin V-negative/PI-positive), Q2 (late apoptotic cells: Annexin V-positive/PI-positive), Q3 (viable cells: Annexin V-negative/PI-negative), and Q4 (early apoptotic cells: Annexin V-positive/PI-negative), then calculate the total apoptotic rate as the sum of the percentages of Q2 and Q4 cells.

Bicinchoninic Acid Protein Assay:

Article Title: Ginsenoside Rg3 Mitigates LPS-Induced Injury in Human Bronchial Epithelial Cells by Restoring Autophagic Flux and Inhibiting the TLR4/NF-κB-Mediated Inflammatory Response
Article Snippet: Human bronchial epithelial (HBE) cells (ATCC, Cat# CCL-202) were used as the in vitro model, with strict control of cell handling and culture conditions to ensure experimental consistency: remove cryopreserved cells from −80°C storage, immediately immerse the cryovial in a 37°C water bath (Thermo Fisher, Model WB2000) and gently agitate for 1–2 minutes until only a small ice crystal remains, disinfect the vial surface with 75% ethanol (Solarbio, Cat# 10009218), transfer the cell suspension to a 15 mL centrifuge tube (Corning, Cat# 430791) containing 5 mL pre-warmed (37°C) complete Dulbecco’s modified Eagle’s medium (DMEM; Gibco, Cat# c11965500BT) supplemented with 10% heat-inactivated fetal bovine serum (FBS; Gibco, Cat# 10099141) and 1% penicillin-streptomycin (100 U/mL penicillin, 100 μg/mL streptomycin; Solarbio, Cat# P1400), centrifuge at 1000×g for 5 minutes at room temperature (RT), discard the supernatant, resuspend the cell pellet in 5 mL complete DMEM, count cells using a hemocytometer (Thermo Fisher, Cat# 02–671-5), seed at a density of 5×10 5 cells per T75 flask (Corning, Cat# 430641), and culture in a humidified incubator (Thermo Fisher, Model 3111) set to 37°C, 5% CO 2 , and 95% relative humidity; when cells reach 80–90% confluence (typically 48–72 hours post-seeding), perform passaging by aspirating the culture medium, rinsing twice with 5 mL pre-warmed PBS (Solarbio, Cat# P1020), adding 2 mL 0.25% trypsin-EDTA (Gibco, Cat# 25200056) and incubating at 37°C for 2–3 minutes (monitoring cell detachment under an inverted microscope), neutralizing trypsin with 4 mL complete DMEM, centrifuging at 1000×g for 5 minutes, discarding the supernatant, resuspending the cell pellet in 5 mL complete DMEM, counting again, and seeding at the required density, with only cells at passages 3–8 used for experiments (to avoid cellular senescence) and cell viability confirmed to be >95% via trypan blue staining (Solarbio, Cat# T8154) before each experiment. .. Ginsenoside Rg3 (G-Rg3) with ≥98% purity was purchased from TargetMol (Cat# T3402), dissolved in dimethyl sulfoxide (DMSO; Sigma, Cat# C6628) to prepare a 10 mM stock solution, and stored at −80°C (avoiding repeated freeze-thaw cycles, with final DMSO concentration in cell culture ≤0.1% to eliminate cytotoxicity); lipopolysaccharide (LPS) from Escherichia coli 055:B5 was obtained from Solarbio (Beijing, China; Cat# L8880), reconstituted in sterile phosphate-buffered saline (PBS; Solarbio, Cat# P1020) to a 1 mg/mL stock solution, filtered through a 0.22 μm sterile filter (Millipore, Cat# SLGP033RB), and stored at −20°C; chloroquine (autophagy inhibition positive control) was purchased from Sigma (Cat# RNBH9960), prepared as a 50 mM stock solution in PBS, and stored at 4°C; primary antibodies against autophagy-related proteins and internal reference were sourced as follows: β-actin (Cat# 66009-1-Ig) and ATG4B (Cat# 11306-1-AP) from Proteintech, ATG7 (Cat# PA5-114334) from Thermo Fisher, PIK3C3 (also known as VPS34; Cat# 21656-1-AP), LC3B (Cat# 18725-1-AP), and p62 (also known as SQSTM1; Cat# 18420-1-AP) from Proteintech, all stored at −20°C after reconstitution according to the manufacturer’s instructions; horseradish peroxidase (HRP)-conjugated secondary antibodies (anti-rabbit: Cat# ab6721, anti-mouse: Cat# ab6789) were obtained from Abcam, stored at 4°C, and used at the recommended dilution ratio; other reagents including RIPA lysis buffer (Millipore, Cat# 20–188), protease inhibitor cocktail (Roche, Cat# 04693159001), PMSF (MedChemExpress, Cat# HY-B0496), BCA protein assay kit (Thermo Fisher, Cat# 23225), 5× SDS loading buffer (Solarbio, Cat# P1040), acrylamide (Sigma, Cat# A9099), Tris-HCl (Solarbio, Cat# T8154), SDS (Solarbio, Cat# S8010), ammonium persulfate (APS; Solarbio, Cat# A1060), TEMED (Solarbio, Cat# T8132), PVDF membranes (Millipore, Cat# IPVH00010), 5% non-fat skim milk (Solarbio, Cat# D8340), and enhanced chemiluminescence (ECL) reagent (Yeasen, Cat# 36208ES) were of analytical grade, stored at the recommended temperatures (4°C or −20°C), and used before their expiration dates. .. Cell apoptosis was quantified using an Annexin V-FITC/Propidium Iodide (PI) Apoptosis Detection Kit (Elabscience, Cat# E-CK-A211) and flow cytometry, with precise control of each step to ensure accurate results: seed HBE cells in 6-well plates at a density of 6×10 5 cells per well, culture them for 24 hours (until reaching 70–80% confluence), then replace the medium with fresh complete DMEM containing the corresponding treatments (control: no treatment; LPS: 100 ng/mL; G-Rg3: 16 μM; LPS + G-Rg3: 100 ng/mL LPS + 16 μM G-Rg3) and incubate for another 24 hours at 37°C, 5% CO 2 ; after treatment, aspirate the culture medium, rinse the cells twice with cold PBS, add 1 mL of 0.25% trypsin-EDTA (Gibco, Cat# 25200056) to each well, incubate at 37°C for 2–3 minutes until cells detach, neutralize the trypsin with 2 mL of complete DMEM, collect the cell suspension into a 15 mL centrifuge tube, centrifuge at 1000×g for 5 minutes at 4°C, discard the supernatant, wash the cell pellet twice with cold PBS (centrifuging at 1000×g for 5 minutes each time to remove residual medium and trypsin), resuspend the pellet in 100 μL of ice-cold binding buffer (provided in the detection kit), add 5 μL of Annexin V-FITC and 10 μL of PI solution (both provided in the kit) to the cell suspension, mix gently by pipetting, and incubate at room temperature in the dark for 15 minutes (avoiding prolonged incubation to prevent non-specific staining of viable cells); after incubation, add 400 μL of binding buffer to each sample to dilute the staining solution, and immediately analyze the samples using a BD FACSCanto II flow cytometer (BD Biosciences, San Jose, CA) with BD FACSDiva software (Version 8.0.1); set the detection parameters as follows: excitation wavelength of 488 nm, emission wavelength of 525 nm for Annexin V-FITC (FITC channel) and 620 nm for PI (PI channel), collect 10,000 events per sample, and use forward scatter (FSC) and side scatter (SSC) gating to exclude cell debris and non-single cells; classify the cells into four quadrants based on fluorescence signals: Q1 (necrotic cells: Annexin V-negative/PI-positive), Q2 (late apoptotic cells: Annexin V-positive/PI-positive), Q3 (viable cells: Annexin V-negative/PI-negative), and Q4 (early apoptotic cells: Annexin V-positive/PI-negative), then calculate the total apoptotic rate as the sum of the percentages of Q2 and Q4 cells.

Western Blot:

Article Title: A biomimetic multimodal nanoplatform combining neutrophil-coated two-dimensional metalloporphyrinic framework nanosheet and exendin-4 to treat obesity-related osteoporosis
Article Snippet: .. WB using antibodies including: TET2 (Abcam, USA), COL1A1 (Collagen I, Abcam, UK), RUNX2 (Runt-related transcription factor 2, CST, USA), PINK1 (PTEN-induced putative kinase protein 1, Bioss, China), Parkin (E3 ubiquitin-protein ligase parkin, Servicebio, China), LC3B (Light Chain 3, Abmart, China), ATG4B (Autophagy Related 4B Cysteine Peptidase, Proteintech, China), BCL2 (B-cell lymphoma-2, Abmart, China), BECN1 (Beclin-1, Abmart, China), ACTB (Beyotime, China), Integrin β1 (MCE, USA), Integrin β2 (Bio-Techne, USA), CXCR2 (Proteintech, China), HRP-labeled Goat Anti-Rabbit IgG (H + L) (Beyotime, China), HRP-labeled Goat Anti-Mouse IgG (H + L) (Beyotime, China), KEAP1 (Kelch Like ECH Associated Protein 1, Proteintech, China),NRF2 (Nuclear factor erythroid 2-related factor 2, Proteintech, China). ..

Article Title: Hexavalent chromium induced autophagy-dependent mTOR expression mediated by upregulation of HMGA2.
Article Snippet: High mobility group A2 (HMGA2) overexpression is often observed in cancers.. Previously, we found that HMGA2 contributed to hexavalent chromium [Cr (VI)]-mediated autophagy.. In this study, interestingly, Cr (VI) treatment triggered both autophagy and the mammalian target of rapamycin (mTOR) in vivo ( BALB/c mice, 0.5 and 1.5 mg/kg, p.o.) and in vitro (0.1, 0.2 and 0.4 μM in A549 and HELF cells), and both autophagy and mTOR were implicated in Cr (VI)-initiated cell growth.

Ubiquitin Proteomics:

Article Title: A biomimetic multimodal nanoplatform combining neutrophil-coated two-dimensional metalloporphyrinic framework nanosheet and exendin-4 to treat obesity-related osteoporosis
Article Snippet: .. WB using antibodies including: TET2 (Abcam, USA), COL1A1 (Collagen I, Abcam, UK), RUNX2 (Runt-related transcription factor 2, CST, USA), PINK1 (PTEN-induced putative kinase protein 1, Bioss, China), Parkin (E3 ubiquitin-protein ligase parkin, Servicebio, China), LC3B (Light Chain 3, Abmart, China), ATG4B (Autophagy Related 4B Cysteine Peptidase, Proteintech, China), BCL2 (B-cell lymphoma-2, Abmart, China), BECN1 (Beclin-1, Abmart, China), ACTB (Beyotime, China), Integrin β1 (MCE, USA), Integrin β2 (Bio-Techne, USA), CXCR2 (Proteintech, China), HRP-labeled Goat Anti-Rabbit IgG (H + L) (Beyotime, China), HRP-labeled Goat Anti-Mouse IgG (H + L) (Beyotime, China), KEAP1 (Kelch Like ECH Associated Protein 1, Proteintech, China),NRF2 (Nuclear factor erythroid 2-related factor 2, Proteintech, China). ..

other:

Article Title: Ginsenoside Rg3 Mitigates LPS-Induced Injury in Human Bronchial Epithelial Cells by Restoring Autophagic Flux and Inhibiting the TLR4/NF-κB-Mediated Inflammatory Response
Article Snippet: Reagents and Antibodies Ginsenoside Rg3 (G-Rg3) with ≥98% purity was purchased from TargetMol (Cat# T3402), dissolved in dimethyl sulfoxide (DMSO; Sigma, Cat# C6628) to prepare a 10 mM stock solution, and stored at −80°C (avoiding repeated freeze-thaw cycles, with final DMSO concentration in cell culture ≤0.1% to eliminate cytotoxicity); lipopolysaccharide (LPS) from Escherichia coli 055:B5 was obtained from Solarbio (Beijing, China; Cat# L8880), reconstituted in sterile phosphate-buffered saline (PBS; Solarbio, Cat# P1020) to a 1 mg/mL stock solution, filtered through a 0.22 μm sterile filter (Millipore, Cat# SLGP033RB), and stored at −20°C; chloroquine (autophagy inhibition positive control) was purchased from Sigma (Cat# RNBH9960), prepared as a 50 mM stock solution in PBS, and stored at 4°C; primary antibodies against autophagy-related proteins and internal reference were sourced as follows: β-actin (Cat# 66009-1-Ig) and ATG4B (Cat# 11306-1-AP) from Proteintech, ATG7 (Cat# PA5-114334) from Thermo Fisher, PIK3C3 (also known as VPS34; Cat# 21656-1-AP), LC3B (Cat# 18725-1-AP), and p62 (also known as SQSTM1; Cat# 18420-1-AP) from Proteintech, all stored at −20°C after reconstitution according to the manufacturer’s instructions; horseradish peroxidase (HRP)-conjugated secondary antibodies (anti-rabbit: Cat# ab6721, anti-mouse: Cat# ab6789) were obtained from Abcam, stored at 4°C, and used at the recommended dilution ratio; other reagents including RIPA lysis buffer (Millipore, Cat# 20–188), protease inhibitor cocktail (Roche, Cat# 04693159001), PMSF (MedChemExpress, Cat# HY-B0496), BCA protein assay kit (Thermo Fisher, Cat# 23225), 5× SDS loading buffer (Solarbio, Cat# P1040), acrylamide (Sigma, Cat# A9099), Tris-HCl (Solarbio, Cat# T8154), SDS (Solarbio, Cat# S8010), ammonium persulfate (APS; Solarbio, Cat# A1060), TEMED (Solarbio, Cat# T8132), PVDF membranes (Millipore, Cat# IPVH00010), 5% non-fat skim milk (Solarbio, Cat# D8340), and enhanced chemiluminescence (ECL) reagent (Yeasen, Cat# 36208ES) were of analytical grade, stored at the recommended temperatures (4°C or −20°C), and used before their expiration dates.

Article Title: Targeting STK26 and ATG4B: miR-22-3p as a modulator of autophagy and tumor progression in HCC
Article Snippet: Antibody(IHC) , ATG4B , Proteintech Group, Inc ;Cat No. 15131-1-AP (1:100).



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Journal: Frontiers in Aging Neuroscience

Article Title: Amyloid beta pathology induces astrocytic pTDP-43 mislocalization and disrupts TDP-43-regulated cryptic exon transcripts

doi: 10.3389/fnagi.2026.1766448

Figure Lengend Snippet: Analysis of ATG4B and KALRN expression in HA cells after Aβ42 exposure. Relative mRNA levels of KALRN (A) and ATG4B (B) were quantified by qPCR using the 2 –ΔCT method. The protein level of KALRN (C) and ATG4B (D) was measured by an in-house enzyme linked immunosorbent assay (ELISA). The experiment was performed 3 times, with 2 independent replicates. Statistical significance was determined by Mann-Whitney test. * p < 0.05, ** p < 0.01.

Article Snippet: Kalirin, RhoGEF kinase ( KALRN ) (Hs01118227_mL, exon 8–9 junction), autophagy related 4B cysteine peptidase ( ATG4B ) (Hs00367088_mL, exon 7–8 junction) and housekeeping genes including ribosomal protein L13A ( RPL13A ) (HS04194366_g1) and Glyceraldehyde-3-phosphate dehydrogenase hydroxymethylbilane synthase ( GAPDH ) ( Hs02758991_g1 ) (Applied Biosystems, Foster City, CA) were used.

Techniques: Expressing, Enzyme-linked Immunosorbent Assay, MANN-WHITNEY

LPS activates autophagy-related protein expression in HBE cells in a concentration-dependent manner. ( A ) Representative Western blot bands showing the expression of ATG7, PIK3C3, ATG4B, p62, LC3B, and β-actin (loading control) in HBE cells treated with 0, 1, 10, 50, or 100 ng/mL LPS. ( B–F ) Quantitative analysis of relative protein expression (normalized to β-actin) for ATG4B ( B ), ATG7 ( C ), PIK3C3 ( D ), p62 ( E ), and LC3B-II ( F ). Data are presented as mean ± SD (n=3 independent experiments). *P<0.05 vs 0 ng/mL group.

Journal: Journal of Inflammation Research

Article Title: Ginsenoside Rg3 Mitigates LPS-Induced Injury in Human Bronchial Epithelial Cells by Restoring Autophagic Flux and Inhibiting the TLR4/NF-κB-Mediated Inflammatory Response

doi: 10.2147/JIR.S555053

Figure Lengend Snippet: LPS activates autophagy-related protein expression in HBE cells in a concentration-dependent manner. ( A ) Representative Western blot bands showing the expression of ATG7, PIK3C3, ATG4B, p62, LC3B, and β-actin (loading control) in HBE cells treated with 0, 1, 10, 50, or 100 ng/mL LPS. ( B–F ) Quantitative analysis of relative protein expression (normalized to β-actin) for ATG4B ( B ), ATG7 ( C ), PIK3C3 ( D ), p62 ( E ), and LC3B-II ( F ). Data are presented as mean ± SD (n=3 independent experiments). *P<0.05 vs 0 ng/mL group.

Article Snippet: Ginsenoside Rg3 (G-Rg3) with ≥98% purity was purchased from TargetMol (Cat# T3402), dissolved in dimethyl sulfoxide (DMSO; Sigma, Cat# C6628) to prepare a 10 mM stock solution, and stored at −80°C (avoiding repeated freeze-thaw cycles, with final DMSO concentration in cell culture ≤0.1% to eliminate cytotoxicity); lipopolysaccharide (LPS) from Escherichia coli 055:B5 was obtained from Solarbio (Beijing, China; Cat# L8880), reconstituted in sterile phosphate-buffered saline (PBS; Solarbio, Cat# P1020) to a 1 mg/mL stock solution, filtered through a 0.22 μm sterile filter (Millipore, Cat# SLGP033RB), and stored at −20°C; chloroquine (autophagy inhibition positive control) was purchased from Sigma (Cat# RNBH9960), prepared as a 50 mM stock solution in PBS, and stored at 4°C; primary antibodies against autophagy-related proteins and internal reference were sourced as follows: β-actin (Cat# 66009-1-Ig) and ATG4B (Cat# 11306-1-AP) from Proteintech, ATG7 (Cat# PA5-114334) from Thermo Fisher, PIK3C3 (also known as VPS34; Cat# 21656-1-AP), LC3B (Cat# 18725-1-AP), and p62 (also known as SQSTM1; Cat# 18420-1-AP) from Proteintech, all stored at −20°C after reconstitution according to the manufacturer’s instructions; horseradish peroxidase (HRP)-conjugated secondary antibodies (anti-rabbit: Cat# ab6721, anti-mouse: Cat# ab6789) were obtained from Abcam, stored at 4°C, and used at the recommended dilution ratio; other reagents including RIPA lysis buffer (Millipore, Cat# 20–188), protease inhibitor cocktail (Roche, Cat# 04693159001), PMSF (MedChemExpress, Cat# HY-B0496), BCA protein assay kit (Thermo Fisher, Cat# 23225), 5× SDS loading buffer (Solarbio, Cat# P1040), acrylamide (Sigma, Cat# A9099), Tris-HCl (Solarbio, Cat# T8154), SDS (Solarbio, Cat# S8010), ammonium persulfate (APS; Solarbio, Cat# A1060), TEMED (Solarbio, Cat# T8132), PVDF membranes (Millipore, Cat# IPVH00010), 5% non-fat skim milk (Solarbio, Cat# D8340), and enhanced chemiluminescence (ECL) reagent (Yeasen, Cat# 36208ES) were of analytical grade, stored at the recommended temperatures (4°C or −20°C), and used before their expiration dates.

Techniques: Expressing, Concentration Assay, Western Blot, Control

G-Rg3 Antagonizes LPS-Induced Autophagy in HBE Cells in Concentration- and Time-Dependent Manners. ( A ) Representative Western blot bands of ATG7, PIK3C3, ATG4B, p62, LC3B, and β-actin (loading control) in HBE cells treated with LPS (100 ng/mL) alone or co-treated with 2–16 μM G-Rg3. ( B ) Representative Western blot bands of p62, LC3B, and β-actin in HBE cells treated with LPS (100 ng/mL) + 16 μM G-Rg3 for 0–30 h. ( C ) Quantitative analysis of relative p62 and LC3B-II/I expression (normalized to β-actin) in LPS-treated cells with different G-Rg3 concentrations. ( D ) Quantitative analysis of relative p62 and LC3B-II/I expression (normalized to β-actin) in LPS + 16 μM G-Rg3-treated cells at different time points. Data are presented as mean ± SD (n = 3 independent experiments). *P < 0.05 vs the corresponding control group.

Journal: Journal of Inflammation Research

Article Title: Ginsenoside Rg3 Mitigates LPS-Induced Injury in Human Bronchial Epithelial Cells by Restoring Autophagic Flux and Inhibiting the TLR4/NF-κB-Mediated Inflammatory Response

doi: 10.2147/JIR.S555053

Figure Lengend Snippet: G-Rg3 Antagonizes LPS-Induced Autophagy in HBE Cells in Concentration- and Time-Dependent Manners. ( A ) Representative Western blot bands of ATG7, PIK3C3, ATG4B, p62, LC3B, and β-actin (loading control) in HBE cells treated with LPS (100 ng/mL) alone or co-treated with 2–16 μM G-Rg3. ( B ) Representative Western blot bands of p62, LC3B, and β-actin in HBE cells treated with LPS (100 ng/mL) + 16 μM G-Rg3 for 0–30 h. ( C ) Quantitative analysis of relative p62 and LC3B-II/I expression (normalized to β-actin) in LPS-treated cells with different G-Rg3 concentrations. ( D ) Quantitative analysis of relative p62 and LC3B-II/I expression (normalized to β-actin) in LPS + 16 μM G-Rg3-treated cells at different time points. Data are presented as mean ± SD (n = 3 independent experiments). *P < 0.05 vs the corresponding control group.

Article Snippet: Ginsenoside Rg3 (G-Rg3) with ≥98% purity was purchased from TargetMol (Cat# T3402), dissolved in dimethyl sulfoxide (DMSO; Sigma, Cat# C6628) to prepare a 10 mM stock solution, and stored at −80°C (avoiding repeated freeze-thaw cycles, with final DMSO concentration in cell culture ≤0.1% to eliminate cytotoxicity); lipopolysaccharide (LPS) from Escherichia coli 055:B5 was obtained from Solarbio (Beijing, China; Cat# L8880), reconstituted in sterile phosphate-buffered saline (PBS; Solarbio, Cat# P1020) to a 1 mg/mL stock solution, filtered through a 0.22 μm sterile filter (Millipore, Cat# SLGP033RB), and stored at −20°C; chloroquine (autophagy inhibition positive control) was purchased from Sigma (Cat# RNBH9960), prepared as a 50 mM stock solution in PBS, and stored at 4°C; primary antibodies against autophagy-related proteins and internal reference were sourced as follows: β-actin (Cat# 66009-1-Ig) and ATG4B (Cat# 11306-1-AP) from Proteintech, ATG7 (Cat# PA5-114334) from Thermo Fisher, PIK3C3 (also known as VPS34; Cat# 21656-1-AP), LC3B (Cat# 18725-1-AP), and p62 (also known as SQSTM1; Cat# 18420-1-AP) from Proteintech, all stored at −20°C after reconstitution according to the manufacturer’s instructions; horseradish peroxidase (HRP)-conjugated secondary antibodies (anti-rabbit: Cat# ab6721, anti-mouse: Cat# ab6789) were obtained from Abcam, stored at 4°C, and used at the recommended dilution ratio; other reagents including RIPA lysis buffer (Millipore, Cat# 20–188), protease inhibitor cocktail (Roche, Cat# 04693159001), PMSF (MedChemExpress, Cat# HY-B0496), BCA protein assay kit (Thermo Fisher, Cat# 23225), 5× SDS loading buffer (Solarbio, Cat# P1040), acrylamide (Sigma, Cat# A9099), Tris-HCl (Solarbio, Cat# T8154), SDS (Solarbio, Cat# S8010), ammonium persulfate (APS; Solarbio, Cat# A1060), TEMED (Solarbio, Cat# T8132), PVDF membranes (Millipore, Cat# IPVH00010), 5% non-fat skim milk (Solarbio, Cat# D8340), and enhanced chemiluminescence (ECL) reagent (Yeasen, Cat# 36208ES) were of analytical grade, stored at the recommended temperatures (4°C or −20°C), and used before their expiration dates.

Techniques: Concentration Assay, Western Blot, Control, Expressing

Protective effect of aucubin on high glucose-induced hGENCs injury by promoting ATG4B protein phosphorylation and increasing autophagy. (A) Electrophoretic map of cells in each group. 1, 2, 3, 4, and 5 represent Con group, HG group, HG-AU-L group, HG-AU-M group, and HG-AU-H group, respectively. (B) Mass spectrogram of protein identification. Venn diagram of (C) phosphorylated proteins, (D) phosphorylated protein sites and (E) protein identification, AU1, AU2 and AU3 represent HG-AU-L group, HG-AU-M group, and HG-AU-H group, respectively. (F) Representative images of expression levels of p-ATG4B and ATG4B detected by WB. (G) Representative images of the expression levels of autophagy protein LC3, p62, ATG5, and ATG7 in each group detected by WB, and the statistical analysis result of the proteins expression levels. *p < .05; ** p < .01. AU: aucubin; HG: high glucose.

Journal: Renal Failure

Article Title: Aucubin ameliorates diabetic kidney disease by restoring hGENCs autophagy through promoting phosphorylation of ATG4B protein

doi: 10.1080/0886022X.2025.2605756

Figure Lengend Snippet: Protective effect of aucubin on high glucose-induced hGENCs injury by promoting ATG4B protein phosphorylation and increasing autophagy. (A) Electrophoretic map of cells in each group. 1, 2, 3, 4, and 5 represent Con group, HG group, HG-AU-L group, HG-AU-M group, and HG-AU-H group, respectively. (B) Mass spectrogram of protein identification. Venn diagram of (C) phosphorylated proteins, (D) phosphorylated protein sites and (E) protein identification, AU1, AU2 and AU3 represent HG-AU-L group, HG-AU-M group, and HG-AU-H group, respectively. (F) Representative images of expression levels of p-ATG4B and ATG4B detected by WB. (G) Representative images of the expression levels of autophagy protein LC3, p62, ATG5, and ATG7 in each group detected by WB, and the statistical analysis result of the proteins expression levels. *p < .05; ** p < .01. AU: aucubin; HG: high glucose.

Article Snippet: Proteins were transferred to polyvinylidene difluoride membranes (PVDF) and then incubated with specific primary antibodies against ATG4B, p-ATG4B(Ser383), ATG5, ATG7 (1:1,000, CST); Bcl-2, Bax (1:500, Immunoway); p62, cleaved caspase3 (1:500, Immunoway); LC3 (1:1,000, Abcam); CD31, Vimentin (1:2,000, Proteintech); nephrin (1:1,000, Affinity) and α-SMA, GAPDH(1:1,000, Proteintech), and secondary antibodies conjugated to HRP (Proteintech).

Techniques: Phospho-proteomics, Expressing

Protective effect of aucubin on DKD mice by promoting ATG4B protein phosphorylation and increasing autophagy. The expression levels of p-ATG4B proteins, ATG4B proteins, autophagy protein (LC3, p62, ATG5, and ATG7), apoptosis-related proteins (Bax, cleaved caspase3, and Bcl-2), EndMT marker proteins (CD31 and α-SMA), and nephrin protein in each group were detected by WB and the statistical analysis result of the proteins expression levels. *p < .05; ** p < .01. DKD: diabetic kidney disease; AU: aucubin.

Journal: Renal Failure

Article Title: Aucubin ameliorates diabetic kidney disease by restoring hGENCs autophagy through promoting phosphorylation of ATG4B protein

doi: 10.1080/0886022X.2025.2605756

Figure Lengend Snippet: Protective effect of aucubin on DKD mice by promoting ATG4B protein phosphorylation and increasing autophagy. The expression levels of p-ATG4B proteins, ATG4B proteins, autophagy protein (LC3, p62, ATG5, and ATG7), apoptosis-related proteins (Bax, cleaved caspase3, and Bcl-2), EndMT marker proteins (CD31 and α-SMA), and nephrin protein in each group were detected by WB and the statistical analysis result of the proteins expression levels. *p < .05; ** p < .01. DKD: diabetic kidney disease; AU: aucubin.

Article Snippet: Proteins were transferred to polyvinylidene difluoride membranes (PVDF) and then incubated with specific primary antibodies against ATG4B, p-ATG4B(Ser383), ATG5, ATG7 (1:1,000, CST); Bcl-2, Bax (1:500, Immunoway); p62, cleaved caspase3 (1:500, Immunoway); LC3 (1:1,000, Abcam); CD31, Vimentin (1:2,000, Proteintech); nephrin (1:1,000, Affinity) and α-SMA, GAPDH(1:1,000, Proteintech), and secondary antibodies conjugated to HRP (Proteintech).

Techniques: Phospho-proteomics, Expressing, Marker

The effect of specific reduction of ATG4B protein phosphorylation levels on related proteins expression in hGENCs under high glucose culture condition and high glucose + aucubin culture condition. (A) Three sh-ATG4B sequences. (B) ATG4B protein expression level was detected by WB after transfection of three sh-ATG4B plasmids into hGENCs. (C) The multiple proteins expression levels detected by WB. a, b, c, and d represent NC group, sh-ATG4B + OVC group, sh-ATG4B + ATG4B WT group, and sh-ATG4B + ATG4B S383A group, respectively. *p < .05; ** p < .01. AU: aucubin; HG: high glucose.

Journal: Renal Failure

Article Title: Aucubin ameliorates diabetic kidney disease by restoring hGENCs autophagy through promoting phosphorylation of ATG4B protein

doi: 10.1080/0886022X.2025.2605756

Figure Lengend Snippet: The effect of specific reduction of ATG4B protein phosphorylation levels on related proteins expression in hGENCs under high glucose culture condition and high glucose + aucubin culture condition. (A) Three sh-ATG4B sequences. (B) ATG4B protein expression level was detected by WB after transfection of three sh-ATG4B plasmids into hGENCs. (C) The multiple proteins expression levels detected by WB. a, b, c, and d represent NC group, sh-ATG4B + OVC group, sh-ATG4B + ATG4B WT group, and sh-ATG4B + ATG4B S383A group, respectively. *p < .05; ** p < .01. AU: aucubin; HG: high glucose.

Article Snippet: Proteins were transferred to polyvinylidene difluoride membranes (PVDF) and then incubated with specific primary antibodies against ATG4B, p-ATG4B(Ser383), ATG5, ATG7 (1:1,000, CST); Bcl-2, Bax (1:500, Immunoway); p62, cleaved caspase3 (1:500, Immunoway); LC3 (1:1,000, Abcam); CD31, Vimentin (1:2,000, Proteintech); nephrin (1:1,000, Affinity) and α-SMA, GAPDH(1:1,000, Proteintech), and secondary antibodies conjugated to HRP (Proteintech).

Techniques: Phospho-proteomics, Expressing, Transfection

The effect of specific reduction of ATG4B protein phosphorylation levels on proliferation and apoptosis of hGENCs. (A) Cell proliferation was detected by CCK-8 assay. (B, D) The apoptosis were detected by flow cytometry. (C, E) Cell proliferation were detected by EdU staining. ** p < .01. AU: aucubin; HG: high glucose; NC: negative control.

Journal: Renal Failure

Article Title: Aucubin ameliorates diabetic kidney disease by restoring hGENCs autophagy through promoting phosphorylation of ATG4B protein

doi: 10.1080/0886022X.2025.2605756

Figure Lengend Snippet: The effect of specific reduction of ATG4B protein phosphorylation levels on proliferation and apoptosis of hGENCs. (A) Cell proliferation was detected by CCK-8 assay. (B, D) The apoptosis were detected by flow cytometry. (C, E) Cell proliferation were detected by EdU staining. ** p < .01. AU: aucubin; HG: high glucose; NC: negative control.

Article Snippet: Proteins were transferred to polyvinylidene difluoride membranes (PVDF) and then incubated with specific primary antibodies against ATG4B, p-ATG4B(Ser383), ATG5, ATG7 (1:1,000, CST); Bcl-2, Bax (1:500, Immunoway); p62, cleaved caspase3 (1:500, Immunoway); LC3 (1:1,000, Abcam); CD31, Vimentin (1:2,000, Proteintech); nephrin (1:1,000, Affinity) and α-SMA, GAPDH(1:1,000, Proteintech), and secondary antibodies conjugated to HRP (Proteintech).

Techniques: Phospho-proteomics, CCK-8 Assay, Flow Cytometry, Staining, Negative Control