Polycystin-1 and polycystin-2 regulate the cell cycle through the helix-loop-helix inhibitor Id2

Xiaogang Li, Ying Luo, Patrick G. Starremans, Coleen A. McNamara, York Pei, Jing Zhou

Research output: Contribution to journalArticle

142 Citations (Scopus)

Abstract

Autosomal-dominant polycystic kidney disease (ADPKD) is the most common hereditary kidney disease and is characterized by progressive cyst formation and ultimate loss of renal function. Increased cell proliferation is a key feature of the disease. Here, we show that the ADPKD protein polycystin-2 (PC2) regulates the cell cycle through direct interaction with Id2, a member of the helix -loop -helix (HLH) protein family that is known to regulate cell proliferation and differentiation. Id2 expression suppresses the induction of a cyclin-dependent kinase inhibitor, p21, by either polycystin-1 (PC1) or PC2. The PC2 -Id2 interaction is regulated by PC1-dependent phosphorylation of PC2. Enhanced Id2 nuclear localization is seen in human and mouse cystic kidneys. Inhibition of Id2 expression by RNA interference corrects the hyperproliferative phenotype of PC1 mutant cells. We propose that Id2 has a crucial role in cell-cycle regulation that is mediated by PC1 and PC2.

Original languageEnglish (US)
Pages (from-to)1102-1112
Number of pages11
JournalNature Cell Biology
Volume7
Issue number12
DOIs
StatePublished - Dec 1 2005
Externally publishedYes

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Cell Cycle
Autosomal Dominant Polycystic Kidney
Cell Proliferation
Cyclin-Dependent Kinase Inhibitor p21
Cystic Kidney Diseases
Inborn Genetic Diseases
Kidney Diseases
RNA Interference
Cysts
Cell Differentiation
Proteins
Phosphorylation
polycystic kidney disease 2 protein
polycystic kidney disease 1 protein
Phenotype
Kidney

ASJC Scopus subject areas

  • Cell Biology

Cite this

Polycystin-1 and polycystin-2 regulate the cell cycle through the helix-loop-helix inhibitor Id2. / Li, Xiaogang; Luo, Ying; Starremans, Patrick G.; McNamara, Coleen A.; Pei, York; Zhou, Jing.

In: Nature Cell Biology, Vol. 7, No. 12, 01.12.2005, p. 1102-1112.

Research output: Contribution to journalArticle

Li, Xiaogang ; Luo, Ying ; Starremans, Patrick G. ; McNamara, Coleen A. ; Pei, York ; Zhou, Jing. / Polycystin-1 and polycystin-2 regulate the cell cycle through the helix-loop-helix inhibitor Id2. In: Nature Cell Biology. 2005 ; Vol. 7, No. 12. pp. 1102-1112.
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