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Sadar MD, Williams DE, Mawji NR, Patrick BO, Wikanta T, Chasanah E, Irianto HE, Soest RV, Andersen RJ. Sintokamides A to E, Chlorinated Peptides from the Sponge Dysidea sp. that Inhibit Transactivation of the N-Terminus of the Androgen Receptor in Prostate Cancer Cells. Org Lett 2008; 10:4947-50. [DOI: 10.1021/ol802021w] [Citation(s) in RCA: 109] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Marianne D. Sadar
- Departments of Chemistry and Earth & Ocean Sciences, University of British Columbia, 2036 Main Mall, Vancouver, B.C., Canada V6T 1Z1, Genome Sciences Centre, B.C. Cancer Agency, 600 West 10th Avenue, Vancouver, BC, Canada V5Z 4E6, Research Center for Marine and Fisheries Product Processing and Biotechnology, Jl, Petamburan VI, Jakarta 10260, Indonesia, and Institute for Systematics and Ecology, University of Amsterdam, 1090 GT Amsterdam, The Netherlands
| | - David E. Williams
- Departments of Chemistry and Earth & Ocean Sciences, University of British Columbia, 2036 Main Mall, Vancouver, B.C., Canada V6T 1Z1, Genome Sciences Centre, B.C. Cancer Agency, 600 West 10th Avenue, Vancouver, BC, Canada V5Z 4E6, Research Center for Marine and Fisheries Product Processing and Biotechnology, Jl, Petamburan VI, Jakarta 10260, Indonesia, and Institute for Systematics and Ecology, University of Amsterdam, 1090 GT Amsterdam, The Netherlands
| | - Nasrin R. Mawji
- Departments of Chemistry and Earth & Ocean Sciences, University of British Columbia, 2036 Main Mall, Vancouver, B.C., Canada V6T 1Z1, Genome Sciences Centre, B.C. Cancer Agency, 600 West 10th Avenue, Vancouver, BC, Canada V5Z 4E6, Research Center for Marine and Fisheries Product Processing and Biotechnology, Jl, Petamburan VI, Jakarta 10260, Indonesia, and Institute for Systematics and Ecology, University of Amsterdam, 1090 GT Amsterdam, The Netherlands
| | - Brian O. Patrick
- Departments of Chemistry and Earth & Ocean Sciences, University of British Columbia, 2036 Main Mall, Vancouver, B.C., Canada V6T 1Z1, Genome Sciences Centre, B.C. Cancer Agency, 600 West 10th Avenue, Vancouver, BC, Canada V5Z 4E6, Research Center for Marine and Fisheries Product Processing and Biotechnology, Jl, Petamburan VI, Jakarta 10260, Indonesia, and Institute for Systematics and Ecology, University of Amsterdam, 1090 GT Amsterdam, The Netherlands
| | - Thamrin Wikanta
- Departments of Chemistry and Earth & Ocean Sciences, University of British Columbia, 2036 Main Mall, Vancouver, B.C., Canada V6T 1Z1, Genome Sciences Centre, B.C. Cancer Agency, 600 West 10th Avenue, Vancouver, BC, Canada V5Z 4E6, Research Center for Marine and Fisheries Product Processing and Biotechnology, Jl, Petamburan VI, Jakarta 10260, Indonesia, and Institute for Systematics and Ecology, University of Amsterdam, 1090 GT Amsterdam, The Netherlands
| | - Ekowati Chasanah
- Departments of Chemistry and Earth & Ocean Sciences, University of British Columbia, 2036 Main Mall, Vancouver, B.C., Canada V6T 1Z1, Genome Sciences Centre, B.C. Cancer Agency, 600 West 10th Avenue, Vancouver, BC, Canada V5Z 4E6, Research Center for Marine and Fisheries Product Processing and Biotechnology, Jl, Petamburan VI, Jakarta 10260, Indonesia, and Institute for Systematics and Ecology, University of Amsterdam, 1090 GT Amsterdam, The Netherlands
| | - Hari Eko Irianto
- Departments of Chemistry and Earth & Ocean Sciences, University of British Columbia, 2036 Main Mall, Vancouver, B.C., Canada V6T 1Z1, Genome Sciences Centre, B.C. Cancer Agency, 600 West 10th Avenue, Vancouver, BC, Canada V5Z 4E6, Research Center for Marine and Fisheries Product Processing and Biotechnology, Jl, Petamburan VI, Jakarta 10260, Indonesia, and Institute for Systematics and Ecology, University of Amsterdam, 1090 GT Amsterdam, The Netherlands
| | - Rob Van Soest
- Departments of Chemistry and Earth & Ocean Sciences, University of British Columbia, 2036 Main Mall, Vancouver, B.C., Canada V6T 1Z1, Genome Sciences Centre, B.C. Cancer Agency, 600 West 10th Avenue, Vancouver, BC, Canada V5Z 4E6, Research Center for Marine and Fisheries Product Processing and Biotechnology, Jl, Petamburan VI, Jakarta 10260, Indonesia, and Institute for Systematics and Ecology, University of Amsterdam, 1090 GT Amsterdam, The Netherlands
| | - Raymond J. Andersen
- Departments of Chemistry and Earth & Ocean Sciences, University of British Columbia, 2036 Main Mall, Vancouver, B.C., Canada V6T 1Z1, Genome Sciences Centre, B.C. Cancer Agency, 600 West 10th Avenue, Vancouver, BC, Canada V5Z 4E6, Research Center for Marine and Fisheries Product Processing and Biotechnology, Jl, Petamburan VI, Jakarta 10260, Indonesia, and Institute for Systematics and Ecology, University of Amsterdam, 1090 GT Amsterdam, The Netherlands
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Link KA, Balasubramaniam S, Sharma A, Comstock CES, Godoy-Tundidor S, Powers N, Cao KH, Haelens A, Claessens F, Revelo MP, Knudsen KE. Targeting the BAF57 SWI/SNF subunit in prostate cancer: a novel platform to control androgen receptor activity. Cancer Res 2008; 68:4551-8. [PMID: 18559499 DOI: 10.1158/0008-5472.can-07-6392] [Citation(s) in RCA: 59] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The androgen receptor (AR) is critical for disseminated prostate cancer proliferation and survival. AR activity is targeted either through prevention of ligand synthesis or through the use of antagonists that bind the COOH-terminal ligand-binding domain. Although initially effective, treatment fails due to restored AR activity in the presence of therapeutics. Thus, new means must be developed to target AR activity. The SWI/SNF chromatin remodeling complex is critical for AR transcriptional activity, and the BAF57 SWI/SNF subunit facilitates direct interaction with the receptor. Although selected SWI/SNF subunit expression is reduced in prostate cancer, we show that BAF57 is retained in human disease and is elevated in a subset of tumors. Functional analyses showed that BAF57 contributes uniquely to androgen-mediated stimulation of transcription without compromising the effectiveness of AR antagonists. Subsequent studies revealed that BAF57 is recruited to the AR DNA-binding domain/hinge region, which occurs concomitant with receptor activation. These data provided the basis for a novel inhibitor derived from BAF57 [BAF57 inhibitory peptide (BIPep)], which blocked AR residence on chromatin and resultant AR-dependent gene activation. Importantly, BIPep expression was sufficient to inhibit androgen-dependent prostate cancer cell proliferation in AR-positive cells. In summary, these data identify blockade of AR-BAF57 interaction as a novel means to target agonist-induced AR function in prostate cancer, and provide the first evidence that abrogation of SWI/SNF function can be developed as a point of therapeutic intervention in prostate cancer.
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Affiliation(s)
- Kevin A Link
- Departments of Cancer Biology and Urology, and Kimmel Cancer Center, Thomas Jefferson University College of Medicine, Philadelphia, Pennsylvania, USa
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