Journal: Theranostics
Article Title: Integrin β3-PKM2 pathway-mediated aerobic glycolysis contributes to mechanical ventilation-induced pulmonary fibrosis
doi: 10.7150/thno.72328
Figure Lengend Snippet: Integrin β3 inhibition ameliorates PKM2-mediated aerobic glycolysis and MV-induced pulmonary fibrosis . A-D , both wild-type and integrin β3-deficient (β3 +/- ) mice were subjected to mechanical ventilation (MV) for 2 h. Lung tissues were harvested at day 7. A and B , lung tissues were stained with fluorophorelabeled antibodies against fibroblast marker fibronectin (FN) (red), pyruvate kinase M2 (PKM2) (green) and collagen I (green), 4',6-diamidino-2- phenylindole (DAPI) stain was used to detect nuclei (blue), original magnification × 400, scale bars correspond to 20 µm. C and D , lactate (Lac) and type I procollagen carboxyterminal peptide (PICP) levels in bronchoalveolar lavage fluid (BALF) were tested, n = 6, 3, 6, 3, respectively in each group. E-H , mice were treated intraperitoneally with integrin β3 inhibitor cilengitide 4mg/kg once a day for 3 consecutive days before being subjected to MV for 2h. Lung tissues were harvested 7days after intubation. E and F , Lac and PICP were tested in BALF, n = 6, 4, 6, 6, respectively in each group. G and H , lung tissues were stained with fluorophore-labeled antibodies against fibroblast marker FN (red), PKM2 (green) and collagen I (green), DAPI stain was used to detect nuclei (blue), original magnification × 400, scale bars correspond to 20 µm. Data are expressed as means ± SEM, *p < 0.05, **p < 0.01, *** p < 0.001 (ANOVA).
Article Snippet: After incubation with 10% BSA for 1 h, the sections were incubated with primary antibodies against integrin β3 (SJ1909/NBP2-67416, Novus, USA), PKM2 (AF7244, R&D, USA), fibronectin and collagen-I (72026S, CST, USA) at a dilution of 1:100 at 4 °C overnight.
Techniques: Inhibition, Staining, Marker, Labeling