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Mol Cell Biol. 2004 Jul;24(13):6021-8.

SENP1 enhances androgen receptor-dependent transcription through desumoylation of histone deacetylase 1.

Author information

1
Department of Cardiology, The University of Texas-M. D. Anderson Cancer Center, Houston, Texas 77030, USA.

Abstract

SUMO (also called Sentrin) is a ubiquitin-like protein that plays an important role in regulating protein function and localization. It is known that several nuclear receptors are modified by SUMO; however, the effect of desumoylation in regulating nuclear receptor function has not been elucidated. Here we show that androgen receptor (AR)-mediated transcription is markedly enhanced by SENP1, a member of SUMO-specific protease family. SENP1's ability to enhance AR-dependent transcription is not mediated through desumoylation of AR, but rather through its ability to deconjugate histone deacetylase 1 (HDAC1), thereby reducing its deacetylase activity. HDAC1's repressive effect on AR-dependent transcription could be reversed by SENP1 and by deletion of its sumoylation sites. RNA interference depletion of endogenous HDAC1 also reduced SENP1's effect. Thus, SENP1 could regulate AR-dependent transcription through desumoylation of HDAC1. These studies provide insights on the potential role of desumoylation in the regulation of nuclear receptor activity.

PMID:
15199155
PMCID:
PMC480885
DOI:
10.1128/MCB.24.13.6021-6028.2004
[Indexed for MEDLINE]
Free PMC Article

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