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Annu Rev Physiol. 2009;71:83-113. doi: 10.1146/annurev.physiol.70.113006.100621.

Polycystins and primary cilia: primers for cell cycle progression.

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1
Renal Division, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts 02115, USA. zhou@rics.bwh.harvard.edu

Abstract

Polycystins are a family of eight-transmembrane proteins united by sequence homology. The name stems from the identification of mutations in genes encoding polycystin-1 and -2 in polycystic kidney diseases. This review discusses recent topics in polycystin research, with a focus on the role of polycystin-1 and polycystin-2 in primary cilia and the cell cycle. Polycystins appear to play key roles during development, but a major question is their function in mature organs. Their roles in primary cilia, shear stress sensation, alteration of intracellular calcium, and planar cell polarity are examined. The third-hit hypothesis of polycystic kidney disease is discussed.

[Indexed for MEDLINE]

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