文摘StAR(steroidogenic acute regulatory)是睾丸间质细胞(Leydig cells)内促进胆固醇作为睾酮合成前体从线粒体外膜转运至内膜的关键因子[1,2],胆固醇在StAR的调控下通过线粒体外膜TSPO(translocator protein)与VDAC1(voltage-dependent anion channel1)进入线粒体内膜,再经CYP11A1(cytochrome P450 family 11 subfamily A member 1)裂解其侧链成为孕烯醇酮,