4,5-diarylisoxazole HSP90 chaperone inhibitors: Potential therapeutic agents for the treatment of cancer

被引:382
作者
Brough, Paul A. [1 ]
Aherne, Wynne [2 ]
Barril, Xavier [1 ]
Borgognoni, Jenifer [1 ]
Boxall, Kathy [2 ]
Cansfield, Julie E. [1 ]
Cheung, Kwai-Miny J. [2 ]
Collins, Ian [2 ]
Davies, Nicholas G. M. [1 ]
Drysdale, Martin J. [1 ]
Dymock, Brian [1 ]
Eccles, Suzanne A. [2 ]
Finch, Harry [1 ]
Fink, Alexandra [1 ]
Hayes, Angela [2 ]
Howes, Robert
Hubbard, Roderick E. [1 ]
James, Karen [2 ]
Jordan, Allan M. [1 ]
Lockie, Andrea [1 ]
Martins, Vanessa [2 ]
Massey, Andrew [1 ]
Matthews, Thomas P. [2 ]
McDonald, Edward [2 ]
Northfield, Christopher J. [1 ]
Pearl, Laurence H. [2 ]
Prodromou, Chrisostomos [2 ]
Ray, Stuart [1 ]
Raynaud, Florence I. [2 ]
Roughley, Stephen D. [1 ]
Sharp, Swee Y. [2 ]
Surgenor, Allan [1 ]
Walmsley, D. Lee [1 ]
Webb, Paul [1 ]
Wood, Mike [1 ]
Workman, Paul [2 ]
Wrightt, Lisa [1 ]
机构
[1] Vernalis Ltd, Cambridge CB21 6GB, England
[2] Inst Canc Res, Canc Res UK Ctr Canc Therapeut, Sutton SM2 5NG, Surrey, England
关键词
D O I
10.1021/jm701018h
中图分类号
R914 [药物化学];
学科分类号
100701 ;
摘要
Inhibitors of the Hsp90 molecular chaperone are showing considerable promise as potential chemotherapeutic agents for cancer. Here, we describe the structure-based design, synthesis, structure-activity relationships and pharmacokinetics of potent small-molecule inhibitors of Hsp90 based on the 4,5-diarylisoxazole scaffold. Analogues from this series have high affinity for Hsp90, as measured in a fluorescence polarization (FP) competitive binding assay, and are active in cancer cell lines where they inhibit proliferation and exhibit a characteristic profile of depletion of oncogenic proteins and concomitant elevation of Hsp72. Compound 40f (VER-52296/NVP-AUY922) is potent in the Hsp90 FP binding assay (IC50 = 21 nM) and inhibits proliferation of various human cancer cell lines in vitro, with GI(50) averaging 9 nM. Compound 40f is retained in tumors in vivo when administered i.p., as evaluated by cassette dosing in tumor-bearing mice. In a human colon cancer xenograft model, 40f inhibits tumor growth by similar to 50%.
引用
收藏
页码:196 / 218
页数:23
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