Cited by 106Drug Transport and Resistance MechanismsLiver physiology and pathologyLiver Diseases and Immunity

Role of TGR5 (GPBAR1) in Liver Disease

Häussinger, Dieter, Keitel, Verena·2018·Seminars in Liver Disease

Abstract

TGR5 (GPBAR1) is a G protein–coupled receptor activated by primary and secondary bile acids, which is expressed in different nonparenchymal cells of the liver, such as sinusoidal endothelial cells, Kupffer cells, cholangiocytes as well as activated hepatic stellate cells. In liver, TGR5 modulates microcirculation, inflammation, regeneration, biliary secretion and proliferation as well as gallbladder filling. Absence of TGR5 renders mice more susceptible toward infectious, inflammatory, metabolic as well as cholestatic liver injuries. It is unknown whether TGR5 plays a role in the pathogenesis of human nonalcoholic steatohepatitis and cholestatic liver diseases such as primary sclerosing cholangitis and primary biliary cholangitis. However, overexpression of TGR5 has been detected in human intra- and extrahepatic cholangiocarcinoma as well as in cystic cholangiocytes, where the receptor promotes cell proliferation, anti-apoptosis as well as cyst growth. While TGR5 agonists may improve various aspects of metabolic, inflammatory, and cholestatic liver diseases, TGR5 inhibitors may attenuate disease progression in polycystic liver disease and cholangiocarcinoma.

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Crossref · 10.1055/s-0038-1669940

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  • Impaired TGR5 expression and signalling may contribute to the pathogenesis of cholangiopathies such as PBC and PSC, since TGR5 protects cholangiocytes by stimulating bicarbonate secretion.

    “Impaired TGR5 expression and signalling may contribute to the pathogenesis of cholangiopathies such as PBC and PSC, since TGR5 also protects cholangiocytes by stimulating bicarbonate secretion.48 49”
  • Persistent stimulation of TGR5 may predispose to gallstone formation through changes in gallbladder motility and promotes proliferation of cholangiocellular carcinoma cells and polycystic cholangiocytes that overexpress TGR5, raising safety concerns for clinical development of TGR5 agonists.

    “However, persistent stimulation of TGR5 may predispose to gallstone formation through changes in gallbladder motility and promotes proliferation of cholangiocellular carcinoma (CCC) cells and polycystic cholangiocytes which overexpress TGR5, thus raising safety concerns for clinical development of TGR5 agonists.48”

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Authors
Häussinger, D., & Keitel, V.
Affiliations
Düsseldorf University Hospital (DE)
Corresponding author
Keitel, Verena
Venue
Seminars in Liver Disease
Published
2018-10-24
Volume
38
Issue
04
Pages
333-339
ISSN
  • 0272-8087 (ISSN-L)
  • 1098-8971
OpenAlex
W2898124054
Cited by
106
References
83
Citations by year
2026: 8 · 2025: 13 · 2024: 20 · 2023: 15 · 2022: 11 · 2021: 21 · 2020: 12 · 2019: 6
FWCI
3.66
Type
journal article
Language
en
Open access
closed
Locations
  • Seminars in Liver Disease (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Health Sciences › Medicine › Oncology › Drug Transport and Resistance Mechanisms
  • Health Sciences › Medicine › Hepatology › Liver physiology and pathology
  • Health Sciences › Medicine › Hepatology › Liver Diseases and Immunity
Keywords
TGR5, G protein-coupled receptors, bile acids, liver disease, cholestatic liver injury, nonalcoholic steatohepatitis, primary sclerosing cholangitis, primary biliary cirrhosis, cholangiocarcinoma, polycystic liver disease, TGR5 agonists, hepatic stellate cells, Kupffer cells, cholangiocytes, liver regeneration, inflammation
MeSH terms
Animals, Bile Acids and Salts, Bile Duct Diseases, Cholestasis, Epithelial Cells, Humans, Hypertension, Portal, Liver Diseases, Signal Transduction, Cholangiocarcinoma, Receptors, G-Protein-Coupled, Mice

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