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Nature. 1994 Sep 15;371(6494):257-61.

p15INK4B is a potential effector of TGF-beta-induced cell cycle arrest.

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  • 1Howard Hughes Medical Institute, Cold Spring Harbor Laboratory, New York 11724.

Abstract

Transforming growth factor-beta (TGF-beta) inhibits cell proliferation by inducing a G1-phase cell cycle arrest. Normal progression through G1 is promoted by the activity of the cyclin-dependent protein kinases CDK4 and CDK6 (ref. 2), which are inhibited by the protein p16INK4. We have isolated a new member of the p16INK4 family, p15INK4B. p15 expression is induced approximately 30-fold in human keratinocytes by treatment with TGF-beta, suggesting that p15 may act as an effector of TGF-beta-mediated cell cycle arrest. The gene encoding p15 is located on chromosome 9 adjacent to the p16 gene at a frequent site of chromosomal abnormality in human tumours (9p21).

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PMID:
8078588
[PubMed - indexed for MEDLINE]
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