Jichu yixue yu linchuang (Feb 2022)
Hepatocyte-specific Sirt1 deficiency exacerbates liver inflammation of mice
Abstract
Objective To investigate the effect of deletion of Sirtuin type 1(Sirt1) gene on liver inflammation of mice and its mechanism. Methods The body weight of C57BL/6J male mice and liver specific Sirt1 deficiency (Sirt1-LKO) male mice were recorded weekly. The sensitivity of inflammatory response was tested by intraperitoneal injection of 20 mg/kg LPS. The survival curve was used to reflect the sensitivity of mice to inflammatory response.The expression of inflammatory factors was detected by Western blot and q-PCR. Results Compared with control wild type mice, Sirt1-LKO mice showed significantly reduced body weight (P<0.05). In addition, The survival curve was shown by kaplane Meier diagram,Sirt1-LKO mice showed lower sensitivity to LPS (P<0.05).The protein level of NF-κB in primary liver cells of Sirt1-LKO mice was increased (P<0.05),Tnfα and IL6 of NF-κB downstream target genes were up-regulated(P<0.05). Conclusions Hepatocyte-specific Sirt1 deletion aggravates liver inflammation response in mouse model.
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