Fig. 5: Further knocking out NLRP3 on the basis of CB2R knockout can alleviate the limitation of skeletal muscle regeneration caused by CB2R knockout.

a Representative images of GSDMD (red) and F4/80 (green) in Cb2r−/− mice and Cb2r−/−/Nlrp3−/− mice, scale bar = 20 μm. b GSDMD expression levels in macrophages, n = 3, *p < 0.05 Cb2r−/− vs. Cb2r−/−/Nlrp3−/− group. c, d Expression levels of MyoD and Myogenin in regenerated muscle cells of Cb2r−/−/Nlrp3−/−mice and Cb2r−/−/Nlrp3−/− mice, scale bar = 20 μm, n = 3, *p < 0.05 Cb2r−/− vs. Cb2r−/−/Nlrp3−/−group. e, f Western blot and quantitative analysis of eMyHC and Myogenin protein expression levels from whole muscle tissue lysates of mice at 7 days post-injury compared to sham group, n = 3, *p < 0.05 Cb2r−/− vs. Cb2r−/−/Nlrp3−/− group. Data are represented as mean ± SD. ns no significance.