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The membrane-bound bile acid receptor TGR5 (Gpbar-1) is localized in the primary cilium of cholangiocytes
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Verena Keitel
Published/Copyright:
May 19, 2010
Abstract
Cholangiocyte cilia are sensory organelles that extend from the apical membrane into the bile duct lumen and detect changes in bile flow and osmolarity. Whether or not cholangiocyte cilia are responsive to bile acids is unknown. TGR5 (Gpbar-1) is a membrane-bound bile acid receptor which is expressed in biliary epithelial cells and promotes chloride secretion in gallbladder epithelial cells. As shown in the present study, TGR5 is localized in the primary cilium of mouse and human cholangiocytes. Here the receptor could play an important role in coupling biliary bile acid concentration and composition to ductular bile formation.
Received: 2010-3-2
Accepted: 2010-3-23
Published Online: 2010-05-19
Published in Print: 2010-07-01
©2010 by Walter de Gruyter Berlin New York
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- Highlight: Of Systems and Structures
- HIGHLIGHT: STRUCTURAL SYSTEMS BIOLOGY
- Converging on the function of intrinsically disordered nucleoporins in the nuclear pore complex
- Towards molecular systems biology of gene transcription and regulation
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- The rhodanese RhdA helps Azotobacter vinelandii in maintaining cellular redox balance
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