“…As a gaseous signaling molecule, H 2 S exerts its physiological functions through different manners (Nikolic, Li, Liu, & Wang, ), including modifying proteins (Modis et al, ), affecting ion channels (Papapetropoulos et al, ), influencing metabolism (Sun et al, ), and regulating cell signaling such as Nrf 2 pathway (Calvert et al, ), NF‐κB pathway (De Cicco et al, ), PI3 K/Akt pathway (Chen et al, ) and mTOR pathway (Wang et al, ). It has been well documented that the PI3 K/Akt (De Cicco et al, ; Meng, Yuan, et al, ; Meng, Zhang, et al, ) and mTOR (Jiang et al, ; Li et al, ; Pan, Li, Huang, & Zhang, ) signaling pathway are involved in the regulation of the cell proliferation. However, the mechanism by which H 2 S modulates the PMECs proliferation are still not clear.…”