Journal: Biomedicine & pharmacotherapy = Biomedecine & pharmacotherapie
Article Title: Shear stress induces monocyte/macrophage-mediated inflammation by upregulating cell-surface expression of heat shock proteins.
doi: 10.1016/j.biopha.2023.114566
Figure Lengend Snippet: Fig. 2. Effect of shear stress on surface proteins. (A) Serum-starved THP-1 cells were replaced with the culture medium and exposed to shear stress (SS) (12 dynes/ cm2) for 24 h. Surface proteins exposed to shear stress were eluted, resolved on a 10% gel with protein markers (M), and visualized after silver staining. The bands detected at high intensity in the 24 h SS lane in comparison with the 0-h SS lane were excised for mass spectrometry. The protein identification of the band is detailed in the Table.(B) Transcript levels of HSP105, HSP90, HSP70, and CAP1 were assessed using real-time PCR. **P < 0.01, vs. 0 h SS; *P < 0.05, vs. 0 h SS.(C and D) HSP105, HSP90, HSP70, and CAP1 proteins were measured by western blotting using (C) total cell lysates and (D) fraction of surface proteins.(E and F) After serum starvation, THP-1 cells were subjected to shear stress for 24 h. Cells were immunostained with HSP105, HSP90, HSP70, and CAP1 using fluorophore-conjugated antibodies and were analyzed by (E) flow cytometry (FACS) and (F) confocal microscopy. The results are representative of four independent experiments.
Article Snippet: Anti-HSP90 (C45G5), anti-HSP70 (D1M6J), and anti-CAP1 (D2K3J) antibodies were purchased from Cell Signaling Technology (Danvers, MA, USA).
Techniques: Shear, Silver Staining, Comparison, Mass Spectrometry, Real-time Polymerase Chain Reaction, Western Blot, Flow Cytometry, Confocal Microscopy