A role for Mediator complex subunit MED13L in Rb/E2F-induced growth arrest.

A role for Mediator complex subunit MED13L in Rb/E2F-induced growth arrest.
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DOI:
10.1038/onc.2011.622
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发表时间:
2012-11-01
期刊:
影响因子:
8
通讯作者:
Nevins, J. R.
Nevins, J. R.
中科院分区:
医学1区
文献类型:
--
作者:
Angus, S. P.;Nevins, J. R.

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The Rb/E2F pathway is deregulated in virtually all human tumors. It is clear that, in addition to Rb itself, essential co-factors required for transcriptional repression and silencing of E2F target genes are mutated or lost in cancer. To identify novel co-factors required for Rb/E2F-mediated inhibition of cell proliferation, we performed a genome-wide shRNA screen. In addition to several known Rb co-factors, the screen identified components of the Mediator complex, a large multiprotein coactivator required for RNA polymerase II transcription. We show that the Mediator complex subunit MED13L is required for Rb/E2F control of cell growth, the complete repression of cell cycle target genes, and cell cycle inhibition.
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