Retinoblastoma protein represses transcription by recruiting a histone deacetylase

L. Magnaghi-Jaulin, R. Groisman, I. Naguibneva, P. Robin, S. Lorain, J. P. Le Villain, F. Troalen, D. Trouche and A. Harel-Bellan ()
Additional contact information
L. Magnaghi-Jaulin: Laboratoire Oncogénèse, Différenciation et Transduction du Signal
R. Groisman: Laboratoire Oncogénèse, Différenciation et Transduction du Signal
I. Naguibneva: Laboratoire Oncogénèse, Différenciation et Transduction du Signal
P. Robin: Laboratoire Oncogénèse, Différenciation et Transduction du Signal
S. Lorain: CNRS URA 1156
J. P. Le Villain: Unité des Marqueurs Biologiques et Moléculaires, Institut Gustave Roussy
F. Troalen: Unité des Marqueurs Biologiques et Moléculaires, Institut Gustave Roussy
D. Trouche: Laboratoire Oncogénèse, Différenciation et Transduction du Signal
A. Harel-Bellan: Laboratoire Oncogénèse, Différenciation et Transduction du Signal

Nature, 1998, vol. 391, issue 6667, 601-605

Abstract: Abstract The retinoblastoma tumour-suppressor protein Rb1 inhibits cell proliferation by repressing a subset of genes that are controlled by the E2F family of transcription factors2 and which are involved in progression from the G1 to the S phase of the cell cycle. Rb, which is recruited to target promoters by E2F1 (ref. 3), represses transcription by masking the E2F1 transactivation domain4 and by inhibiting surrounding enhancer elements5,6,7,8, an active repression that could be crucial for the proper control of progression through the cell cycle9. Some transcriptional regulators act by acetylating or deacetylating the tails protruding from the core histones10, thereby modulating the local structure of chromatin: for example, some transcriptional repressors function through the recruitment of histone deacetylases11. We show here that the histone deacetylase HDAC1 physically interacts and cooperates with Rb. In HDAC1, the sequence involved is an LXCXE motif, similar to that used by viral transforming proteins to contact Rb. Our results strongly suggest that the Rb/HDAC1 complex is a key element in the control of cell proliferation and differentiation and that it is a likely target for transforming viruses.

Date: 1998
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DOI: 10.1038/35410

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