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Semin Liver Dis 2019; 39(02): 235-248
DOI: 10.1055/s-0039-1681032
Review Article
Thieme Medical Publishers 333 Seventh Avenue, New York, NY 10001, USA.

Endoplasmic Reticulum Stress in Metabolic Liver Diseases and Hepatic Fibrosis

Jessica L. Maiers
1   Division of Gastroenterology and Hepatology, Mayo Clinic, Rochester, Minnesota
,
Harmeet Malhi
1   Division of Gastroenterology and Hepatology, Mayo Clinic, Rochester, Minnesota
› Author Affiliations Funding This work was supported in part by NIH grants DK111378 (H. M.), DK112915 (J. L. M), and by Gilead Sciences Research Scholars Program in Liver Disease (H. M.).
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Publication History

Publication Date:
25 March 2019 (online)

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Abstract

Endoplasmic reticulum (ER) stress is a major contributor to liver disease and hepatic fibrosis, but the role it plays varies depending on the cause and progression of the disease. Furthermore, ER stress plays a distinct role in hepatocytes versus hepatic stellate cells (HSCs), which adds to the complexity of understanding ER stress and its downstream signaling through the unfolded protein response (UPR) in liver disease. Here, the authors focus on the current literature of ER stress in nonalcoholic and alcoholic fatty liver diseases, how ER stress impacts hepatocyte injury, and the role of ER stress in HSC activation and hepatic fibrosis. This review provides insight into the complex signaling and regulation of the UPR, parallels and distinctions between different liver diseases, and how ER stress may be targeted as an antisteatotic or antifibrotic therapy to limit the progression of liver disease.

Keywords

unfolded protein response - nonalcoholic fatty liver disease - hepatic stellate cells - steatosis
 

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