MiR-148b Caused Liver Injury in Rats with Traumatic Hemorrhagic Shock by Inhibiting SIRT6 Expression

Title:MiR-148b Caused Liver Injury in Rats with Traumatic Hemorrhagic Shock by Inhibiting SIRT6 Expression

Volume: 24 Issue: 11

Author(s): Xiongfei Ma and Mingchen Liu*

Affiliation:

• Center for General Practice Medicine, Department of Infectious Diseases, Zhejiang Provincial People's Hospital, Affiliated People's Hospital, Hangzhou Medical College, Hangzhou, Zhejiang, 310014, China

Keywords: miR-148b, SIRT6, traumatic hemorrhagic shock, I/R, apoptosis, liver injury, alanine aminotransferase.

Abstract:

Background: The purpose of this study was to investigate the role of miR- 148b in liver injury in rats with traumatic hemorrhagic shock (THS) and to elucidate its potential mechanism.

Methods: The levels of alanine aminotransferase (ALT) and aspartate aminotransferase (AST) in the serum of rats were detected by enzyme-linked immune sorbent assay (ELISA), and the injury of rat liver was analyzed by hematoxylin-eosin (H&E) staining. Apoptosis of rat hepatocytes and normal rat liver cell line (BRL3A) was identified by terminal deoxynucleotidyl transferase-mediated dUTP-biotin nick end labeling (TUNEL) assay and flow cytometry, respectively. MiR-148b and sirtuin 6 (SIRT6) expression was measured by quantitative reverse transcription polymerase chain reaction (qRT-PCR) and Western blot. Lactate dehydrogenase (LDH) content and cell viability were measured by commercial kits and cell counting kit-8 (CCK-8) assay, respectively. The binding sites of miR-148b and SIRT6 were predicted by the Starbase database and verified by dual luciferase reporter assay.

Results: MiR-148b expression in THS rats or ischemia-reperfusion (I/R)-treated cells was higher than in the control group. Overexpression of miR-148b further promoted the effects of I/R, which enhanced the levels of ALT, AST and LDH, cell apoptosis of liver tissue or BRL3A cells and decreased the expression of SITR6. Besides, miR-148b negatively correlated with SIRT6, and upregulated the expression of SIRT6 could partly reverse the effect of miR-148b.

Conclusion: Hepatocyte injury induced by I/R was achieved by regulating miR-148b /SIRT6 axis

Cite this article as:

Ma Xiongfei and Liu Mingchen*, MiR-148b Caused Liver Injury in Rats with Traumatic Hemorrhagic Shock by Inhibiting SIRT6 Expression, Current Molecular Medicine 2024; 24 (11) . https://dx.doi.org/10.2174/1566524023666230816112629