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Genes Dev. 2010 Jul 1;24(13):1329-33. doi: 10.1101/gad.1948010. Epub 2010 Jun 15.

RB's original CIN?

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  • 1Department of Pediatrics, Stanford University, Stanford, California 94305, USA. julsage@stanford.edu

Abstract

The retinoblastoma tumor suppressor RB is the downstream mediator of a cellular pathway that is thought to prevent cancer by controlling the ability of cells to enter or exit the cell cycle in G0/G1. Recently, however, accumulating evidence has suggested that RB, its family members p107 and p130, and their partners, the E2F family of transcription factors, may have important cellular functions beyond the G1/S transition of the cell cycle, including during DNA replication and at the transition into mitosis. In this issue of Genes & Development, three studies demonstrate a critical role for RB in proper chromosome condensation, centromeric function, and chromosome stability in mammalian cells, and link these cellular functions of RB to tumor suppression in mice. Here we discuss how transcriptional and post-transcriptional mechanisms under the control of the RB pathway ensure accurate progression through mitosis, thereby preventing cancer development.

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PMID:
20551167
[PubMed - indexed for MEDLINE]
PMCID:
PMC2895191
Free PMC Article

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