Sirtuin3 deficiency exacerbates carbon tetrachloride−induced hepatic injury in mice

Sirtuin3 (SIRT3) plays an important role in maintaining normal mitochondrial function and alleviating oxidative stress. After carbon tetrachloride (CCl₄) administration, the expression of SIRT3 decreased in the liver of mice, which indicated that the SIRT3 might play a crucial role during chemical‐induced acute hepatic injury. To verify the hypothesis, CCl ₄ was given to induce acute hepatic injury in SIRT3 knockout (KO) mice and wild‐type (WT) mice. CCl ₄‐induced liver injury was more severe in SIRT3 KO mice compared with the WT mice. In addition, the oxidative stress induced by CCl ₄ was enhanced in the SIRT3 KO mice. Furthermore, the increased expression of dynamin‐related protein 1 was also aggravated in SIRT3 KO mice after CCl ₄ administration. In conclusion, our study demonstrated that SIRT3 deficiency exacerbated CCl ₄‐induced impairment of the liver in mice, and the mechanism might be related to enhanced oxidative stress.