Abstract
Heat shock protein (Hsp) 90 is an ATP-dependent chaperone and plays a vital role in the folding, maturation, and stability of a protein. Hsp90 and its client proteins have become targets of various diseases through the regulation of disease-related proteins. Inhibition of Hsp90 production and activity prevents ATP hydrolysis, resulting in the ubiquitination and proteasome degradation of client proteins. However, the Hsp90 inhibitor has obvious toxic side effects and the inevitable heat shock response. Cell division cycle 37 (Cdc37) is a crucial Hsp90 kinase-specific co-chaperone, which forms a complex with Hsp90 to regulate kinase and non-kinase client’s activities, cell communication, and signal transduction. The Hsp90-Cdc37 complex maintains cell survival by stabilizing abnormal client proteins and regulating cell growth signals. The abnormal activation of Hsp90-Cdc37 protein-protein interaction (PPI) often leads to the aggravation of diseases, such as cancer and neurodegenerative diseases. Compared with ATP competitive Hsp90 inhibitors, blocking Hsp90-Cdc37 PPI has higher selectivity, fewer toxic side effects, and better application prospects. This review detailed the biological characteristics of Hsp90-Cdc37 PPI and its role in several human diseases. Besides, the latest research progress in inhibitors is summarized and discussed to guide further research and clinical application.
Keywords: Heat shock protein 90, cell division cycle 37, protein-protein interaction, diseases, inhibitor, homeostasis.
Graphical Abstract
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