Semin Liver Dis 2023; 43(03): 279-292
DOI: 10.1055/a-2129-8977
Review Article

The Role of Endoplasmic Reticulum Stress Response in Liver Regeneration

Kshitij Deshmukh
1   Interdisciplinary Graduate Program in Human Toxicology, University of Iowa, Iowa City, Iowa
,
Udayan Apte
2   Department of Pharmacology, Toxicology and Therapeutics, University of Kansas Medical Center, Kansas City, Kansas
› Author Affiliations

Funding This paper received funding from the National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, U.S. Department of Health and Human Services, under the ID R01 DK98414.


Preview

Abstract

Exposure to hepatotoxic chemicals is involved in liver disease–related morbidity and mortality worldwide. The liver responds to damage by triggering compensatory hepatic regeneration. Physical agent or chemical-induced liver damage disrupts hepatocyte proteostasis, including endoplasmic reticulum (ER) homeostasis. Post–liver injury ER experiences a homeostatic imbalance, followed by active ER stress response signaling. Activated ER stress response causes selective upregulation of stress response genes and downregulation of many hepatocyte genes. Acetaminophen overdose, carbon tetrachloride, acute and chronic alcohol exposure, and physical injury activate the ER stress response, but details about the cellular consequences of the ER stress response on liver regeneration remain unclear. The current data indicate that inhibiting the ER stress response after partial hepatectomy–induced liver damage promotes liver regeneration, whereas inhibiting the ER stress response after chemical-induced hepatotoxicity impairs liver regeneration. This review summarizes key findings and emphasizes the knowledge gaps in the role of ER stress in injury and regeneration.



Publication History

Accepted Manuscript online:
14 July 2023

Article published online:
18 August 2023

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