Effects of DOMG on HGFs viability. 10, 50 and 100 μmol/L DMOG exhibited no cytotoxic effect on HGFs. (A, B) The cytotoxic effect of 10, 50, 100, 250, 500 and 1000 μmol/L DMOG on HGFs was detected by CCK‐8 assay after treatment for 24 (A) and 48 h (B). The optical density was normalized to a relative value of 100% for untreated cells. (C) The cytotoxicity effect of DMOG was also detected by FCM. (D) PI‐positive dead cell percentage was normalized to the group without DMOG treatment. Data were represented as means ± standard deviation (SD) from three independent experiments. ****P < 0.0001, ***P < 0.001, and **P < 0.01 compared with control group