Journal: Journal of Sport and Health Science

Article Title: Exercise attenuates stress-related signaling as sensed by higher phosphorylation of small heat shock proteins in skeletal muscle from older individuals

doi: 10.1016/j.jshs.2025.101111

Figure Lengend Snippet: Relative HSP abundances in whole skeletal muscle homogenates from young adults and older adults pre and post HIT exercise. Representative Westen blots of (A) HSP72, HSP27, and αB-crystallin and (B) phosphorylated HSP27 Ser15 (pHSP27 Ser15) and pαB-crystallin Ser59 in whole muscle homogenates from the vastus lateralis of the same individuals. Calibration curves of mixed muscle homogenates are indicated and were used to determine the relative number of given proteins (see Methods). Stain-free gels are indicative of total protein loading, and molecular weights are indicated by markers collected under white light capture without moving the membrane between that and chemiluminescence detection. Relative abundances of (C) HSP72, (D) HSP27, (E) pHSP27 Ser15, (F) αB-crystallin, and (G) pαB-crystallin Ser59 from young (circle) and older adults Pre (square) and older adults Post (triangle) HIT exercise are shown relative to average Old (pre) on a given gel (data are presented as mean ± SD). Individuals indicated by the number of symbols ( n : 5–7), with the same color assigned to the same individual and consistent across all graphs. * p ≤ 0.05 indicates Brown-Forsye and Welch’s and post hoc analysis using Games-Horwell. HIT = high-intensity training; HSP = heat shock protein; pαB-crystallin Ser59 = phospho-αB-crystallin at Serine59; pHSP27 Ser15 = phospho-HSP27 at Serine15.

Article Snippet: Details of antibodies used are as follows: HSP72 (1 in 500 mouse monoclonal, SMC100A; StressMarq Biosciences, Victoria, Canada); HSP27 (1 in 1000 mouse monoclonal, G3.1 ab2790; Abcam, Cambridge, UK); pHSP27 Ser15 (1 in 2000 monoclonal rabbit, ab76313; Abcam), pHSP27 Ser82 (1 in 2000 polyclonal mouse, ADI-SPA-524; Enzo Biochem, Farmingdale, NY, USA), αB-crystallin (1 in 1000 mouse monoclonal, SPA-222; StressGen Biotechnologies), pαB-crystallin Ser59 (1 in 1000 rabbit polyclonal, SPA-227; StressGen Biotechnologies).

Techniques: Staining, Membrane

Journal: Journal of Sport and Health Science

Article Title: Exercise attenuates stress-related signaling as sensed by higher phosphorylation of small heat shock proteins in skeletal muscle from older individuals

doi: 10.1016/j.jshs.2025.101111

Figure Lengend Snippet: HSP abundances in type I and II skeletal muscle fibers from young and older adults. (A, C, and F) The MHC isoform present was determined in individual muscle fiber segments from the vastus lateralis and, following pooling into type I and type II groups from a given biopsy, were analyzed by Westen blotting. Westen blots of (A) HSP72, (C) HSP27 and pHSP27 Ser15, (F) αB-crystallin and pαB-crystallin Ser59, with MHC isoforms in groups of fibers. Stain-free gels are indicative of total protein loading, and molecular weights are indicated by markers collected under white light capture without moving the membrane between that and chemiluminescence detection. Calibration curves of mixed muscle homogenates are indicated. Relative protein abundances of (B) HSP72, (D) HSP27, (E) pHSP27 Ser15, (G) αB-crystallin, and (H) pαB-crystallin Ser59 in fibers from young (circle) and older adults (square) type I fibers (no outline) and type II fibers (outline). All fibers are expressed relative to the average older adult’s type I fibers. The same color is assigned to the same individual and is consistent with (data are presented as mean ± SD). * p < 0.05 and ** p < 0.01, mixed effect model Univariant using either Tukey’s or Games-Horwell’s multiple comparison test (see Methods). HIT = high-intensity training; HSP = heat shock protein; MHC = myosin heavy chain; pαB-crystallin Ser59 = phospho-αB-crystallin at Serine59; pHSP27 Ser15 = phospho-HSP27 at Serine15.

Article Snippet: Details of antibodies used are as follows: HSP72 (1 in 500 mouse monoclonal, SMC100A; StressMarq Biosciences, Victoria, Canada); HSP27 (1 in 1000 mouse monoclonal, G3.1 ab2790; Abcam, Cambridge, UK); pHSP27 Ser15 (1 in 2000 monoclonal rabbit, ab76313; Abcam), pHSP27 Ser82 (1 in 2000 polyclonal mouse, ADI-SPA-524; Enzo Biochem, Farmingdale, NY, USA), αB-crystallin (1 in 1000 mouse monoclonal, SPA-222; StressGen Biotechnologies), pαB-crystallin Ser59 (1 in 1000 rabbit polyclonal, SPA-227; StressGen Biotechnologies).

Techniques: Staining, Membrane, Comparison

Journal: Journal of Sport and Health Science

Article Title: Exercise attenuates stress-related signaling as sensed by higher phosphorylation of small heat shock proteins in skeletal muscle from older individuals

doi: 10.1016/j.jshs.2025.101111

Figure Lengend Snippet: HSP abundances in type I and II skeletal fibers from older adults pre- and post HIT exercise. Relative protein abundances of (A and B) HSP72, (C and D) HSP27, (E and F) pHSP27 Ser15, (G and H) αB-crystallin, and (I and J) pαB-crystallin Ser59 in fibers from old pre and old post HIT exercise. All fibers are expressed relative to the average old pre type I fibers or relative pre type II depending on fiber type. The same color is assigned to the same Individual, consistent in both graphs and all figures. * p < 0.05 and ** p < 0.01 indicated significant difference in paired t -test (except pHSP27 Ser15 Wilcoxon match-pair rank test). Representative blots are shown in . HIT = high-intensity training; HSP = heat shock protein; pαB-crystallin Ser59 = phospho-αB-crystallin at Serine59; pHSP27 Ser15 = phospho-HSP27 at Serine15.

Article Snippet: Details of antibodies used are as follows: HSP72 (1 in 500 mouse monoclonal, SMC100A; StressMarq Biosciences, Victoria, Canada); HSP27 (1 in 1000 mouse monoclonal, G3.1 ab2790; Abcam, Cambridge, UK); pHSP27 Ser15 (1 in 2000 monoclonal rabbit, ab76313; Abcam), pHSP27 Ser82 (1 in 2000 polyclonal mouse, ADI-SPA-524; Enzo Biochem, Farmingdale, NY, USA), αB-crystallin (1 in 1000 mouse monoclonal, SPA-222; StressGen Biotechnologies), pαB-crystallin Ser59 (1 in 1000 rabbit polyclonal, SPA-227; StressGen Biotechnologies).

Techniques:

Journal: Bioactive Materials

Article Title: Glucose/ROS-responsive and redox-gated adaptive hydrogel dressing for accelerating diabetic wound repair via synergistic cGAS/STING pathway inhibition and oxidative stress alleviation

doi: 10.1016/j.bioactmat.2026.03.025

Figure Lengend Snippet: The cellular uptake and anti-inflammatory effect of HPSL in vitro . (A) Flow cytometry analysis and (B) semi-quantitative analysis of cellular uptake of PSL and blank NPs by M1 macrophages. n = 3. (C) Representative Giemsa staining images of LPS and high glucose-stimulated RAW 264.7 cells with different formulations, scale bar = 50 μm. (D) Immunofluorescence staining and semi-quantitative analysis of CD68 (red) and iNOS (green) in RAW 264.7 cells from different treatment groups, scale bar = 50 μm. n = 6. (E) Immunofluorescence staining and semi-quantitative analysis of CD68 (green) and Arg-1 (red) in RAW 264.7 cells from different treatment groups, scale bar = 50 μm. n = 6. Western blotting analysis and corresponding semi-quantitative analysis of (F) STING/ p -STING, (G) TBK1/ p -TBK1, (H) IRF3/ p -IRF3, (I) NF-κB, (J) TNF-α, and (K) IL-6, Lane 1: Normal group, Lane 2: Model group, Lane 3: PSL group, Lane 4: Free H151 group, Lane 5: HPSL group. n = 3. All data are shown as mean ± SEM.

Article Snippet: CD68-specific antibodies were purchased from Proteintech Group, Inc. (Wuhan, China).

Techniques: In Vitro, Flow Cytometry, Staining, Immunofluorescence, Western Blot

Journal: Bioactive Materials

Article Title: Inhalable PD-L1-engineered hybrid cellular vesicles suppress excessive neutrophil activation and restore mitochondrial homeostasis to alleviate ischemia–reperfusion lung injury and pneumonia

doi: 10.1016/j.bioactmat.2026.03.024

Figure Lengend Snippet: Res-PD-L1@nmEVs Attenuate Inflammation and Oxidative Damage in Lung Epithelial Cells In Vitro . (A-B) Flow cytometric analysis and quantification (B) of DiO-labeled Res-PD-L1@nmEVs uptake by BEAS-2B cells under H/R conditions after pretreatment with different endocytic inhibitors (chlorpromazine, chloroquine, and filipin) or incubation at 4 °C. (C) mRNA expression levels of IL-6, TNF-α, and IL-1β in BEAS-2B cells with or without H/R injury following pretreatment with Res, nEVs, PD-L1@mEVs, PD-L1@nmEVs, or Res-PD-L1@nmEVs. (D-E) Representative fluorescence images (D) and quantitative analysis (E) of cell proliferation assessed by BrdU incorporation (red; nuclei stained with DAPI, blue). Scale bar: 50 μm. (F-G) Apoptosis rates detected by flow cytometry (F) and flow cytometric analysis of Annexin V-positive BEAS-2B cells under the indicated conditions (G). (H–K) Fluorescence microscopy images and quantitative analysis of intracellular nitric oxide (NO, green) (H-I) and reactive oxygen species (ROS, red) (J-K). Scale bar: 100 μm. (L) Flow cytometry analysis of intracellular ROS levels. (M − O) Levels of malondialdehyde (MDA) (M), superoxide dismutase 2 (SOD2) activity (N), and glutathione (GSH) content (O) in cells. (P-Q) Cell migration ability evaluated by wound healing assay under different treatments. ∗ vs. Control; # vs. H/R; & vs. H/R + PD-L1@nmEVs, p < 0.05.

Article Snippet: Apoptosis was detected using double staining with Annexin V-APC and 7-AAD (35-640-KIT, Tonbo, USA) to distinguish early and late apoptotic cell populations.

Techniques: In Vitro, Labeling, Incubation, Expressing, Fluorescence, BrdU Incorporation Assay, Staining, Flow Cytometry, Microscopy, Activity Assay, Migration, Wound Healing Assay, Control