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Background: Heat shock protein 90 (HSP90) is a molecular chaperone essential for the stability of key regulators of cell growth and survival. HSP90 is involved in protein folding and functions as a chaperone for numerous client proteins, many of which are important in cancer pathogenesis. Hsp90 enables cancer cell survival by maintaining the function of their mutated client proteins including the KIT and PDGFRA proteins. AUY922 inhibits Hsp90, resulting in proteasomal degradation of oncogenic client proteins, inhibition of cell proliferation, and elevation of HSP72 levels in a wide range of human tumor cell lines.
Biological Activity: NVP-AUY922 potently inhibits the proliferation of gastric cancer cell lines with with GI50 values of approximately 2 to 40 nmol/L and significantly induces the degradation of growth factor receptors and other client proteins. NVP-AUY922 significantly suppressed the activity of AKT and ERK and potently induced antiproliferation in ESCC cells.
CAS Number: 747412-49-3
Description: NVP-AUY922 potently inhibits HSP90 with IC50 values of 7.8 nM and 21 nM, and Ki values of 9 nM and 8.2 nM for HSP90α and HSP90β, respectively. NVP-AUY922 shows a very high binding affinity to HSP90β with a Kd of 1.7 nM. NVP-AUY922 inhibits the proliferation of human tumor cells in vitro with GI50 values of approximately 2 to 40 nM, inducing G1-G2 arrest and apoptosis. Human endothelial cells are very sensitive to NVP-AUY922 with GI50s of 2.5-3.9 nM. NVP-AUY922 also exhibits potent antitumor efficacy in human tumor xenografts including BT474 breast, A2780 ovarian, U87MG glioblastoma, PC3 prostate, and WM266.4 melanoma.
Format: White to off-white solid.
Purity: ≥99%
Storage Stability: Store at or below -20°C. Solid form is stable at least 12 months from date of receipt, when stored as directed. Do not store aqueous solutions for more than one day.
Biosafety Level: Not applicable (BSL-1)
References: Eccles, S.A., et al. Cancer Res. 68: 2850-2860 (2008).
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