• Xia Li, Jie Wang, Ying Li, Wei He, Qi-Jiao Cheng, Xia Liu, De-Lin Xu, Zhi-Gang Jiang, Xue Xiao, and Yi-Huai He.
• Yi-Huai He, Department of Infectious Diseases, Affiliated Hospital of Zunyi Medical University, No. 201 Dalian Street, Zunyi, 563000, Guizhou, China, 993565989@qq.com.
• Croat. Med. J. 2023 Jun 30; 64 (3): 149163149-163.

AimTo investigate the effect of the gp130/STAT3-endoplasmic reticulum (ER) stress axis on hepatocyte necroptosis during acute liver injury.MethodsER stress and liver injury in LO2 cells were induced with thapsigargin, and in BALB/c mice with tunicamycin and carbon tetrachloride (CCl4). Glycoprotein 130 (gp130) expression, the degrees of ER stress, and hepatocyte necroptosis were assessed.ResultsER stress significantly upregulated gp130 expression in LO2 cells and mouse livers. The silencing of activating transcription factor 6 (ATF6), but not of ATF4, increased hepatocyte necroptosis and mitigated gp130 expression in LO2 cells and mice. Gp130 silencing reduced the phosphorylation of CCl4-induced signal transducer and activator of transcription 3 (STAT3), and aggravated ER stress, necroptosis, and liver injury in mice.ConclusionATF6/gp130/STAT3 signaling attenuates necroptosis in hepatocytes through the negative regulation of ER stress during liver injury. Hepatocyte ATF6/gp130/STAT3 signaling may be used as a therapeutic target in acute liver injury.

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