Heat shock protein 90 (Hsp90) is a molecular chaperone that modulates intracellular signaling and protein folding, trafficking, and turnover. Inhibitors of Hsp90, such as geldanamycin, have shown promise as anti-tumor agents. CAY10607 binds the N-terminal domain of Hsp90, efficiently displacing geldanamycin from the ATP binding site (IC50 = 30 nM).1 In addition, CAY10607 inhibits the proliferation of several cancer cell lines (IC50 ~ 0.28 μM), promotes the degradation of the Hsp90 client proteins Her-2 and androgen receptor, and has no effect on a variety of kinases.1
1
Gopalsamy, A., Shi, M., Golas, J., et al. Discovery of benzisoxazoles as potent inhibitors of chaperone heat shock protein 90. J Med Chem51373-375(2008).
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Oc1cc(O)c(cc1Cl)c1noc2ccc(NCCN3CCOCC3)cc12
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Gopalsamy, A., Shi, M., Golas, J., et al. Discovery of benzisoxazoles as potent inhibitors of chaperone heat shock protein 90. J Med Chem51373-375(2008).
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