ha15  (TargetMol)

Journal: Cell Stress & Chaperones

Article Title: Hypoxia-induced GRP78 activation disrupts the Fndc5/Irisin axis to accelerate skeletal muscle atrophy

doi: 10.1016/j.cstres.2026.100176

Figure Lengend Snippet: Effects of HA15 on C2C12 myoblast viability, GRP78 and Fndc5/irisin expression, and myotube formation. (a) CCK-8 assay showing the viability of C2C12 myoblasts treated with different concentrations of HA15 (1, 5, 10, 50, and 100 µM). Data are presented as mean ± SD ( n = 6), with significant differences indicated ( P < 0.05). (b) Western blot analysis of GRP78 and Fndc5/irisin protein levels in C2C12 myoblasts after treatment with HA15 at the indicated concentrations. β-Tubulin is used as a loading control. (c) Quantification of GRP78 protein expression normalized to β-Tubulin from the Western blot. Data are presented as mean ± SD ( n = 3), with significant differences indicated ( P < 0.001). (d) Immunofluorescence staining showing the expression of MyHC (green) and nuclear staining with Hoechst (blue) in C2C12 myotubes treated with various concentrations of HA15 (1 µM, 5 µM, 10 µM, 50 µM, and 100 µM). (e) Quantification of the myotube fusion index, data presented as mean ± SD ( n = 3). (f) Quantification of myotube diameter, data presented as mean ± SD ( n = 3). (g) Quantification of myotube area, data presented as mean ± SD ( n = 3). Significant differences are indicated by P values.

Article Snippet: The impact of HA15 on cell viability was assessed using the Cell Counting Kit-8 (CCK-8; TargetMol, Boston, MA, USA; C0005).

Techniques: Expressing, CCK-8 Assay, Western Blot, Control, Immunofluorescence, Staining

Journal: Bioactive Materials

Article Title: Multi-omics-informed hydrogel design: modulating IL-6 to reduce endoplasmic reticulum stress in bone regeneration

doi: 10.1016/j.bioactmat.2025.09.005

Figure Lengend Snippet: IL-6-mediated regulation of HSPA5 in early bone defect repair tissues. ( A ) Extraction of femoral and alveolar bone cell clusters from whole-cell atlases. ( B ) Pseudo-time series analysis of cellular and gene expression in repair tissues. ( C ) The rat model for femoral and alveolar bone defect treatment using HA15 and LMT28. ( D , E ) Immunohistochemical analysis of HSPA5 and IL-6 expression in femoral defects after HA15 treatment. Scale bars: 200 μm and 50 μm. ( F , G ) Immunohistochemical analysis in alveolar defects after LMT28 treatment. Scale bars: 200 μm and 50 μm. HA15 inhibits HSPA5; LMT28 inhibits IL-6. Statistical significance was assessed with a t -test.

Article Snippet: Following the femoral defect creation, HA15 (HY-100437, MCE, US), LMT28 (HY-102084, MCE, US), HM03 (HY-125974, MCE, US), and SC144 (HY-15614, MCE, US) were administered to the rats via intraperitoneal injection, in accordance with the manufacturer's instructions.

Techniques: Extraction, Gene Expression, Immunohistochemical staining, Expressing

Journal: Bioactive Materials

Article Title: Multi-omics-informed hydrogel design: modulating IL-6 to reduce endoplasmic reticulum stress in bone regeneration

doi: 10.1016/j.bioactmat.2025.09.005

Figure Lengend Snippet: IL-6 modulates HSPA5 to mitigate endoplasmic reticulum stress (ERS)-related apoptosis in early bone defects. ( A , B ) Expression and quantitative analysis of ERS-related proteins following HA15 and LMT28 treatments. Scale bars: 200 μm and 50 μm. ( C , D ) Quantitative analysis of apoptosis-related proteins CHOP and caspase-12 after treatment. Scale bars: 200 μm and 50 μm. ( E ) Expression levels of ERS and apoptosis-related proteins were analyzed by Western blot, and statistical analysis was conducted on the results. ( F , G ) Quantitative terminal deoxynucleotidyl transferase dUTP nick-end labeling (TUNEL) staining and statistical analysis of apoptosis in femoral and alveolar bone defects. Scale bars: 100 μm. ( H ) Ca 2+ histopathological staining. Scale bars: 100 μm and 40 μm. ( I ) Detection of reactive oxygen species in repair tissue following HA15 and LMT28 treatment. Scale bars: 200 μm and 50 μm. Statistical significance was determined using one-way ANOVA.

Article Snippet: Following the femoral defect creation, HA15 (HY-100437, MCE, US), LMT28 (HY-102084, MCE, US), HM03 (HY-125974, MCE, US), and SC144 (HY-15614, MCE, US) were administered to the rats via intraperitoneal injection, in accordance with the manufacturer's instructions.

Techniques: Expressing, Western Blot, TUNEL Assay, Staining

Journal: Translational Oncology

Article Title: Overcoming the leptomeningeal seeding of medulloblastoma by targeting HSP70

doi: 10.1016/j.tranon.2026.102695

Figure Lengend Snippet: In vitro and in vivo evaluation of combination therapy targeting HSP70 in LMS model. (A, E) Dose-response curves for single and combination treatments of VER155008 with cisplatin (A) or 4HC (E) in S3 cells. The leftward shift of the combination curve (pink line) compared to monotherapy (black line) indicates enhanced efficacy. (B, F) Combination Index (CI) vs. fraction affected (Fa) plots for VER155008 + cisplatin combination (B) and VER155008 + 4HC combination (F), generated by CompuSyn software. CI values below 1 indicate synergy. (C, G) Isobologram analysis for VER155008 + cisplatin combination (C) and VER155008 + 4HC combination (G), showing dose pairs required to achieve 50% (Fa = 0.5, blue), 75% (Fa = 0.75, red), and 90% (Fa = 0.9, green) growth inhibition. (D) Cell viability comparison between single-agent and combination treatments of VER155008 with cisplatin in S3 cells. (H) Cell viability comparison between single-agent and combination treatments of VER155008 with 4HC in S3 cells. The combination showed significantly greater inhibitory effect than monotherapy. (I) Representative bioluminescence imaging (BLI) of LMS-bearing mice treated with vehicle, VER155008 alone, or in combination with cisplatin or ifosfamide (IFO) at days 1, 10, and 17. (J) Longitudinal quantification of BLI signal intensity in the brain region of interest (ROI) over time for each treatment group. (K) Longitudinal quantification of BLI signal intensity in the spinal cord region of interest (ROI) over time for each treatment group. Quantification of photon flux was performed for brain and spinal cord regions of interest (ROI) at the indicated time points. In vivo data are presented as mean ± SD, with n = 5 mice per group. Statistical analysis was conducted using repeated-measures ANOVA followed by post hoc testing. *P < 0.05, **P < 0.01, ***P < 0.001.

Article Snippet: VER155008, Apoptozole, HA15, TRC051384, JG98 , Elesclomol, cisplatin (Selleckchem, Houston, TX.

Techniques: In Vitro, In Vivo, Generated, Software, Inhibition, Comparison, Imaging

Journal: Journal of Advanced Research

Article Title: Bacteroides uniformis ameliorates pro-inflammatory diet-exacerbated colitis by targeting endoplasmic reticulum stress-mediated ferroptosis

doi: 10.1016/j.jare.2024.11.025

Figure Lengend Snippet: Pro-inflammatory diet inhibits endoplasmic reticulum stress signaling involving ATF4/HSPA5 pathway. (A) RNA-seq analysis on principal component analysis of all genes to evaluate the differences among CN group (in black, n = 4) and PI group (in red, n = 5). (B) Number of differentially expressed colonic genes between two groups. (C) Heatmap of gene set variation analysis showing several downregulated genes in PI group belonging to heat shock protein 70 family. (D) Quantitative RT–PCR analysis showing the down-regulation of Hspa1b , Hspa1a , Hspa5 and Hsph1 after pro-inflammatory diet treatment. (E) Comparisons of the relative mRNA level of Perk , Atf4 , Atf6 and Chop between mice treated with or without pro-inflammatory diet. (F) Heatmap on the expression of Perk , Atf4 , Hspa5 and GPX4 between ND group and PD group. (G-I) Western blotting and immunohistochemical results demonstrating decreased expression of ATF4 and HSPA5 in PD group. Corresponding animal experiments had been repeated for 3 or more times. Data are represented as the mean ± SD. (For interpretation of the references to color in this figure legend, the reader is referred to the web version of this article.)

Article Snippet: Upon reaching 70–80 % confluence, the cell were treated with HSPA5 inhibitor (1 uM, HY-100437, MCE, Shanghai, China), HSPA5 recombined protein (10 ng / mL, HY-P71742, MCE, Shanghai, China) or PERK inhibitor (1uM or 5uM, GSK2606414, MCE, Shanghai, China) for two days and were then harvested for RT-qPCR and Western blot analysis.

Techniques: RNA Sequencing, Quantitative RT-PCR, Expressing, Western Blot, Immunohistochemical staining

Journal: Journal of Advanced Research

Article Title: Bacteroides uniformis ameliorates pro-inflammatory diet-exacerbated colitis by targeting endoplasmic reticulum stress-mediated ferroptosis

doi: 10.1016/j.jare.2024.11.025

Figure Lengend Snippet: The involvement of ferroptosis in intestinal inflammation of CD patients with pro-inflammatory diet pattern. (A-C) Results from Dataset Accession number GSE6731 showing the downregulation of GPX4 and the upregulation of HSPA5 and ATF4 in the disease affected colon from patients with IBD. CD-un, disease unaffected tissues from CD patients; CD-aff, disease affected tissues from CD patients; UC-un, disease unaffected tissues from UC patients; UC-aff, disease affected tissues from UC patients. (D-F) Relative expression of PERK , ATF4 , HSPA5 and GPX4 in colon from CD patients of our hospital in mRNA and protein level. HC, health control group; CD, patients with CD group; (G) The DII scores of 32CD patients included in this study were compared between High-DII group (patients with higher DII group) and Low-DII group (patients with lower DII group). (H) Representative immunohistochemical staining of GPX4 and HSPA5 in CD colon tissues from High-DII group and Low-DII group. (I-J) Quantification of GPX4 and HSPA5 expression using integrated optical density/specimen area (IOD/area). Data are represented as the mean ± SD. ns, no significance.

Article Snippet: Upon reaching 70–80 % confluence, the cell were treated with HSPA5 inhibitor (1 uM, HY-100437, MCE, Shanghai, China), HSPA5 recombined protein (10 ng / mL, HY-P71742, MCE, Shanghai, China) or PERK inhibitor (1uM or 5uM, GSK2606414, MCE, Shanghai, China) for two days and were then harvested for RT-qPCR and Western blot analysis.

Techniques: Expressing, Control, Immunohistochemical staining, Staining

Journal: Journal of Advanced Research

Article Title: Bacteroides uniformis ameliorates pro-inflammatory diet-exacerbated colitis by targeting endoplasmic reticulum stress-mediated ferroptosis

doi: 10.1016/j.jare.2024.11.025

Figure Lengend Snippet: Bacteroides uniformis ameliorates DSS-induced acute colitis. (A) Experimental design for antibiotics and DSS treatment, as well as the microbiota transplantation. BU group (oral administration of B. uniformis , n = 5), UA group (oral S. mutans , n = 5), and PBS group ( n = 5). (B) Culture of the fecal bacteria before and after antibiotic cocktails treatment using the blood agar plate. (C-D) Measurement of body weight lost and colon length at sacrifice of three groups. (E-F) H&E staining of colon section and the pathological score for each group (Scale bars: 625um). (G) Comparison of colonic MPO activity among three groups. (H-I) Detection of the relative mRNA level of Mucin-2 , tight juncture proteins ( Zo-1 and Cldn8 ) and inflammatory cytokines ( Tnfα , Il17a , Il6 , Il1β , Il12 , Il1α , Il10 and Tgfβ1 ) in colon. (J-L) Higher expression of GPX4, HSPA5 and ATF4 in both RNA and protein level after administrated with B. uniformis. Corresponding animal experiments had been repeated for 3 or more times. Data are represented as the mean ± SD.

Article Snippet: Upon reaching 70–80 % confluence, the cell were treated with HSPA5 inhibitor (1 uM, HY-100437, MCE, Shanghai, China), HSPA5 recombined protein (10 ng / mL, HY-P71742, MCE, Shanghai, China) or PERK inhibitor (1uM or 5uM, GSK2606414, MCE, Shanghai, China) for two days and were then harvested for RT-qPCR and Western blot analysis.

Techniques: Transplantation Assay, Bacteria, Staining, Comparison, Activity Assay, Expressing

Journal: Journal of Advanced Research

Article Title: Bacteroides uniformis ameliorates pro-inflammatory diet-exacerbated colitis by targeting endoplasmic reticulum stress-mediated ferroptosis

doi: 10.1016/j.jare.2024.11.025

Figure Lengend Snippet: Bacteroides uniformis ameliorates Pro-inflammatory diet-induced colitis in DSS model by reversing ferroptosis. (A) Experimental design for dietary and DSS treatment. Mice fed on the pro-inflammatory diet were divided into three groups: BU group (oral B. uniformis , n = 5), UA group (oral S. mutans , n = 5), PBS group ( n = 5). (B-D) Comparisons of body weight lost during DSS treatment, the colon length and the colonic MPO activity at sacrifice among three groups. (E-F) Quantitative RT–PCR detection of inflammatory cytokines ( Tnfα , Il17a , Il6 , Il1β , Il12 Il1α , Il10 and Tgfβ1 ), tight junction proteins ( Cldn1 , Cldn2 , Jam and Cldn14 ) and Mucin-2 expression in colon. (G-H) Representative images with H&E staining and the pathological score to estimate intestinal inflammation (Scale bars: 625um). (I-K) Measurement of Fe, GSH and MDA content in colon. (L) Relative mRNA expression of ferroptosis related genes ( Acsl4 , Tfr1 , Nox1 , Cox1 , Gpx4 , Fpn , Fth1 , Ftl , Tf , Ireb2 , Slc7a11 and Slc3a2 ). (M) Representative images of transmission electron microscopy for distal colon. Arrows head to mitochondria. (N-O) The recovery of GPX4, HSPA5, ATF4 and PERK expression in both RNA and protein level after administrated with B. uniformis. Corresponding animal experiments had been repeated for 3 or more times. Data are represented as the mean ± SD.

Article Snippet: Upon reaching 70–80 % confluence, the cell were treated with HSPA5 inhibitor (1 uM, HY-100437, MCE, Shanghai, China), HSPA5 recombined protein (10 ng / mL, HY-P71742, MCE, Shanghai, China) or PERK inhibitor (1uM or 5uM, GSK2606414, MCE, Shanghai, China) for two days and were then harvested for RT-qPCR and Western blot analysis.

Techniques: Activity Assay, Quantitative RT-PCR, Expressing, Staining, Transmission Assay, Electron Microscopy

Journal: Journal of Advanced Research

Article Title: Bacteroides uniformis ameliorates pro-inflammatory diet-exacerbated colitis by targeting endoplasmic reticulum stress-mediated ferroptosis

doi: 10.1016/j.jare.2024.11.025

Figure Lengend Snippet: Co-cultured with Bacteroides uniformis inhibits ER stress pathway-mediated ferroptosis in vitro . (A-B) Improvement of cell viability in a concentration- and time-dependent pattern when co-culture with B. uniformis . (C-D) Decreased level of LDH level in cell coculture supernatant. Relative expression of PERK, ATF4, HSPA5 and GPX4 in RNA level (E, F) and in protein level (G H) after treated cells with B. uniformis . A, C, E and G showed the experimental results in Caco-2 cell. B, D, F and H showed the experimental results in NCM460 cell. Experiments had been repeated for 3 or more times. Data are represented as the mean ± SD.

Article Snippet: Upon reaching 70–80 % confluence, the cell were treated with HSPA5 inhibitor (1 uM, HY-100437, MCE, Shanghai, China), HSPA5 recombined protein (10 ng / mL, HY-P71742, MCE, Shanghai, China) or PERK inhibitor (1uM or 5uM, GSK2606414, MCE, Shanghai, China) for two days and were then harvested for RT-qPCR and Western blot analysis.

Techniques: Cell Culture, In Vitro, Concentration Assay, Co-Culture Assay, Expressing