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HSP90 as a target for antitumor therapy
Drápalová, Kateřina ; Zatloukalová, Pavlína (advisor) ; Dibus, Nikol (referee)
Stability and correct tertiary structure of proteins are necessary for maintaining cellular homeostasis. The cell uses molecular chaperones, including Hsp90, to achieve this balance. Hsp90 is an essential protein for healthy and cancer cells. Overexpression of this chaperone is noticeable in many cancers. This thesis summarizes current understandings of the Hsp90 protein and its role in carcinogenesis. Hsp90 became a target of anticancer therapy in the 90s. Inhibition of this chaperone, though successful in many studies, has not yet reached the wanted results in clinical practice. Current failures are mostly caused by high hepatotoxicity and other side effects accompanying the therapy, or the inhibition having insufficient antitumor effects. Nevertheless, the inhibition of the Hsp90 protein represents an interesting approach in antitumor therapy. New inhibitors are constantly being developed and tested in monotherapy or in combination therapy, which demonstrates significantly higher efficacy and, thanks to the synergistic effect, enables the application of a lower concentration of therapeutics.
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