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Upregulation and nuclear recruitment of HDACI in hormone refractory prostate cancer

Lookup NU author(s): Dr Luke Gaughan, Susan Cook, Professor Hing Leung, Professor David Neal, Professor Craig Robson

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Abstract

BACKGROUND. Histone deacetylase 1 (HDAC1) is a co-repressor involved in differentiation and proliferation control. It is upregulated in malignant compared to benign tissue, and targets a number of transcription factors including p53. METHODS. By immunohistochemistry, HDAC1 protein expression was investigated in human Prostate specimens and the CWR22 mouse xenograft model. Flow cytometry and deconvolution immunofluorescence were also performed. RESULTS. HDAC1 was upregulated in pre-malignant and malignant lesions, with the highest increase in expression in hormone refractory (HR) cancer. Using the CWR22 xenograft model we showed androgen dependent regulation of HDAC1 HDAC1 overexpression led to a significant increase in proliferation and a shift towards the undifferentiated cytokeratin (CK) profile in a PC3M derivative clone constitutively expressing HDAC1. CONCLUSION. This study underlines the importance of HDAC1 in cell proliferation and the development of prostate cancer (CaP) and proposes a mechanism for HDAC1 nuclear recruitment. HDAC1 may constitute a crucial therapeutic target particularly in the most lethal phase of androgen independence. (C) 2004 Wiley-Liss, Inc.


Publication metadata

Author(s): Halkidou, K., Gaughan, L., Cook, S., Leung, H. Y., Neal, D. E., Robson, C. N.

Publication type: Article

Publication status: Published

Journal: The Prostate

Year: 2004

Volume: 59

Issue: 2

Pages: 177-189

ISSN (print): 0270-4137

ISSN (electronic): 1097-0045

URL: http://dx.doi.org/10.1002/pros.20022

DOI: 10.1002/pros.20022


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