HSP90 Inhibitors Blocking Multiple Oncogenic Signaling Pathways for the Treatment of Cancer

Heat shock protein 90 (HSP90) is an ATP-dependent molecular chaperone which plays important roles in the development of cancer. Inhibition of the HSP90 chaperone function can disrupt multiple cancer dependent signaling pathways and result in potent anti-cancer effects, which has been a promising anti-cancer strategy. Up to now, HSP90 inhibitors with different mechanisms have been developed, including HSP90 N-terminal inhibitors (pan-isoform and isoform selective), C-terminal inhibitors and HSP90-cochaperone protein-protein interaction (PPI) inhibitors. In this chapter, we will review the current development of HSP90 inhibitors as anti-cancer agents.