Journal: The Journal of Biological Chemistry

Article Title: CARMIL membrane-binding domain regulates capping protein and actin assembly

doi: 10.1016/j.jbc.2026.111484

Figure Lengend Snippet: Actin filament network assembly on lipid-coated beads with CP, V-1, and CBR126. Asymmetric tails of actin filament networks generated by incubating Ni-functionalized and fluorescent lipid-coated beads with His-VVCA (N-WASP), followed by the addition of 100 nM Arp2/3 complex, 5 μM profilin-actin, and 50 nM CP for 30 min ( top row ). Addition of 500 nM V-1 to the reaction mixture resulted in F-actin growing from the bead surface as a symmetric ring and a diffuse cloud around the bead ( second row ). Addition of low concentrations of His-CBR126 resulted in asymmetric F-actin tail growth from the bead (rows labeled 35 nM and 50 nM), and higher concentrations of CBR126 inhibited actin growth (row labeled 2000 nM). CP, capping protein; CBR, CP-binding region.

Article Snippet: Porcine brain Arp2/3 complex from cytoskeleton (Cat. No. RP01P) was reconstituted per manufacturer instructions and used within 1 month.

Techniques: Generated, Labeling, Binding Assay

Journal: The Journal of Biological Chemistry

Article Title: CARMIL membrane-binding domain regulates capping protein and actin assembly

doi: 10.1016/j.jbc.2026.111484

Figure Lengend Snippet: Membrane-binding domain (MB) effects on CP activity. A , His-tagged MB mutants cause actin network to grow asymmetrically from the bead surface in a mixture of 100 nM Arp2/3 complex, 5 μM profilin-actin, 50 nM CP, and 500 nM V-1 (30-min time points) but to a lesser extent than His-CBR126 wt. B - E , three data sets are plotted as different colors and shapes . The data analyzed are from experiments with an optimal concentration of His-CBR, one that produced the highest numbers of beads with asymmetric actin growth for each data set. The horizontal black bar is the median, and p values are calculated from a Mann-Whitney nonparametric analysis. The following parameters were measured and plotted: B , the area of brightest fluorescence near the bead surface; C , circularity of the region of brightest fluorescence near the bead surface; D , the total area of fluorescence, including the diffuse cloud surrounding the beads, and E , the total fluorescence of the actin network. CP, capping protein; CBR, CP-binding region.

Article Snippet: Porcine brain Arp2/3 complex from cytoskeleton (Cat. No. RP01P) was reconstituted per manufacturer instructions and used within 1 month.

Techniques: Membrane, Binding Assay, Activity Assay, Concentration Assay, Produced, MANN-WHITNEY, Fluorescence

Journal: The Journal of Biological Chemistry

Article Title: CARMIL membrane-binding domain regulates capping protein and actin assembly

doi: 10.1016/j.jbc.2026.111484

Figure Lengend Snippet: Model of regulatory cycles for CP actin capping. 1 , CP bound to V-1 in the cytoplasm is inactive. 2 , CP/V-1 binding to CARMIL promotes V-1 dissociation. 3 , Free CP binds barbed ends and promotes Arp2/3-nucleated polarized actin growth at the bead surface. 4 & 5 , Near the bead surface, CARMIL can a) promote uncapping of a capped barbed end to allow filament growth or b) capture a capped actin filament. Dynamic association of CP with barbed end - “loose/leaky” capper. 6 , Dynamic association of CARMIL with lipid: CARMIL can leave the bead surface and stay bound to CP as the actin filament network grows and flows away from the bead surface. CP, capping protein.

Article Snippet: Porcine brain Arp2/3 complex from cytoskeleton (Cat. No. RP01P) was reconstituted per manufacturer instructions and used within 1 month.

Techniques: Binding Assay

Journal: Journal of Sport and Health Science

Article Title: Weightlifting outperforms voluntary wheel running for improving adiposity and insulin sensitivity in obese mice

doi: 10.1016/j.jshs.2025.101100

Figure Lengend Snippet: Resistance exercise exceeds the benefits of endurance exercise in ameliorating metabolic dysfunction. Following 8 weeks of diet and exercise interventions, all mice were assessed for their metabolic function by GTT, ITT, and skeletal muscle response of Akt and AS160 phosphorylation to injection of insulin measured by Western blot. (A–C) HOMA-IR taken after an overnight fast for baseline glucose and insulin. (D and E) GTT from 0–120 min and calculated AUC; colored * indicates significant difference from NC-SED. (F and G) ITT from 0–60 min and calculated AUC; colored * indicates significant difference from NC-SED. (H–N) pAkt stimulation, AS160 S318, and AS160 T642 in hindlimb muscles before and after insulin injection and the pre–post ∆ in phosphorylation. (O and P) Total and phosphorylated 4E-BP1. (Q–T) Western results for Raptor, COX4, LC3 II/I, and ubiquitin staining. Representative western blot images inset right. Data presented as mean ± standard error of the mean. Statistical analysis performed by analysis of variance between groups: * p < 0.05, ** p < 0.01, *** p < 0.001, and **** p < 0.0001. NC-SED n : 8–16 (white); HFD-SED n : 8–18 (red); HFD-R EX n : 8–16 (blue); HFD-E EX n : 8–15 (green). 4E-BP1 = Eukaryotic translation initiation factor 4E binding protein; Akt = protein kinase B; AS160 = Akt substrate 160; COX4 = cytochrome c oxidase 4; CS = citrate sythase; E EX = endurance exercise; GAPDH = glyceraldehyde 3 phosphate dehydrogenase; GTT = glucose tolerance test; HFD = high fat diet; HOMA-IR = homeostatic model assessment for insulin resistance; iAUC = integrated area under the curve; ITT = insulin tolerance test; LC3 II/I = microtubule-associated protein light chain 3; NC = normal chow; pAkt = phospho-Akt; R EX = resistance exercise; SED = sedentary; Ub = ubiquitin.

Article Snippet: Primary antibodies used for analysis were from Cell Signaling Technologies (Danvers, MA, USA) and diluted 1:1000 unless otherwise stated as follows: protein kinase B (Akt; 1:500; #4691; Cell Signaling Technologies), phospho-Akt (pAkt) S473 (1:500; #9271; Cell Signaling Technologies), Ubiquitin (#3933; Cell Signaling Technologies), microtubule-associated protein light chain 3 (LC3 II/I; #4018; Cell Signaling Technologies), cytochrome c oxidase subunit 4(COX4; #11967; Cell Signaling Technologies), Akt substrate 160 (AS160 S318; #8619; Cell Signaling Technologies), AS160 T642 (#8881; Cell Signaling Technologies), eukaryotic translation initiation factor 4E binding protein (4E-BP1; #9452; Cell Signaling Technologies), and glyceraldehyde 3 phosphate dehydrogenase (GAPDH; #2118; Cell Signaling Technologies).

Techniques: Phospho-proteomics, Injection, Western Blot, Muscles, Ubiquitin Proteomics, Staining, Binding Assay

Journal: Precision Clinical Medicine

Article Title: Agrimol B inhibits pancreatic ductal adenocarcinoma by induction of lethal mitophagy through decreasing mitochondrial transcription termination factor 3

doi: 10.1093/pcmedi/pbag009

Figure Lengend Snippet: Agrimol B induces PINK1/Parkin pathway-dependent mitophagy initiation in PDAC cells. (A) Western blot analysis of PINK1, Parkin, and LC3 in the mitochondria of PANC-1 and AsPC-1 cells. (B) Western blot analysis of Parkin in the mitochondria and cytoplasm of PANC-1 and AsPC-1 cells. (C) Western blot analysis of LC3 in the presence or absence of Agrimol B in the presence or absence of Mdivi-1 for 24 h. (D, E) Western blot analysis of LC3 in PDAC cells transfected with siScramble, siPINK1, or siParkin following treatment with or without Agrimol B. (F) Western blot analysis of LC3 in PANC-1 and AsPC-1 cells with or without Agrimol B in the presence or absence of wortmannin. (G-I) Immunofluorescence analysis of LC3 in PDAC cells treated with or without Agrimol B in the presence or absence of wortmannin. Scale bars, 10 μm.

Article Snippet: An anti-microtubule-associated protein light chain 3 (LC3) antibody (NB100-2220) was purchased from Novus, while anti-MTERF3 (EM1701-29) and lysosomal associated membrane protein 2 (LAMP2) (M1603-5) antibodies were purchased from HuaBio.

Techniques: Western Blot, Transfection, Immunofluorescence

Journal: Precision Clinical Medicine

Article Title: Agrimol B inhibits pancreatic ductal adenocarcinoma by induction of lethal mitophagy through decreasing mitochondrial transcription termination factor 3

doi: 10.1093/pcmedi/pbag009

Figure Lengend Snippet: Agrimol B blocks autophagic flux in PDAC cells. (A, B) Western blot analysis of P62 and CTSD in PANC-1 and AsPC-1 cells treated with Agrimol B for 24 h. (C, E, F) Immunofluorescence analysis of RFP-GFP-LC3 after PANC-1 and AsPC-1 cells were transfected with RFP-GFP-LC3 for 48 h, followed by treatment with or without Agrimol B for another 24 h. Scale bars, 10 μm. (D, G-L) Immunofluorescence analysis of the colocalization of endogenous LC3 with LAMP2 after treatment with Agrimol B or rapamycin for 24 h in PANC-1 and AsPC-1 cells. Scale bars, 10 μm. (M-O) Immunofluorescence analysis of LC3 in PDAC cells treated with or without Agrimol B in the presence or absence of HCQ. Scale bars, 10 μm.

Article Snippet: An anti-microtubule-associated protein light chain 3 (LC3) antibody (NB100-2220) was purchased from Novus, while anti-MTERF3 (EM1701-29) and lysosomal associated membrane protein 2 (LAMP2) (M1603-5) antibodies were purchased from HuaBio.

Techniques: Western Blot, Immunofluorescence, Transfection

Journal: Precision Clinical Medicine

Article Title: Agrimol B inhibits pancreatic ductal adenocarcinoma by induction of lethal mitophagy through decreasing mitochondrial transcription termination factor 3

doi: 10.1093/pcmedi/pbag009

Figure Lengend Snippet: Agrimol B regulates mitophagy by downregulating MTERF3 expression. (A) Venn diagram showing the overlap of differentially expressed proteins (fold-change ≥ 1.3 or ≤ 0.76) between PANC-1 and AsPC-1 cells. (B, C) Volcano plots of DEGs identified via label-free quantitative proteomics in PANC-1 and AsPC-1 cells. (D) Western blot analysis of MTERF3 in PANC-1 and AsPC-1 cells treated with Agrimol B for 24 h. (E) Differences in MTERF3 expression between normal tissues and cancer tissues in the UCSC Xena database. (F) Kaplan-Meier analysis of MTERF3 expression and overall survival in 64 patients with PDAC. (G, H) CCK-8 assay in PDAC cells transfected with vector or oeMTERF3 following treatment with or without Agrimol B. (I) Western blot analysis of LC3 in PDAC cells transfected with vector or oeMTERF3 following treatment with or without Agrimol B. (J) Western blot analysis of PINK1 and Parkin in PDAC cells transfected with vector or oeMTERF3 following treatment with or without Agrimol B. (K) Immunohistochemical analyses of PINK1 and MTERF3 expression in PDAC tissues. Scale bars, 100 μm. (L) Correlation of the immunostaining intensities of PINK1 and MTERF3. (M) Western blot analysis of TIM23, SOD2, and HADHA in PDAC cells transfected with vector or oeMTERF3 following treatment with or without Agrimol B. (N) Molecular docking suggests that Agrimol B can bind to MTERF3 with a binding energy of -6.085 kcal/mol. (O) Western blot analysis of MTERF3 in cells treated with or without Agrimol B in the presence or absence of MG132.

Article Snippet: An anti-microtubule-associated protein light chain 3 (LC3) antibody (NB100-2220) was purchased from Novus, while anti-MTERF3 (EM1701-29) and lysosomal associated membrane protein 2 (LAMP2) (M1603-5) antibodies were purchased from HuaBio.

Techniques: Expressing, Quantitative Proteomics, Western Blot, CCK-8 Assay, Transfection, Plasmid Preparation, Immunohistochemical staining, Immunostaining, Binding Assay