Charles University Faculty of Pharmacy in Hradec Králové Department of Biochemical Sciences Candidate: Petra Lakomá Supervisor: RNDr. Eva Novotná, Ph.D. Title of diploma thesis: The effect of alisertib and brigatinib on the activity of selected human carbonyl reducing enzymes Key words: brigatinib, alisertib, daunorubicin, inhibition, carbonyl-reducing enzymes Protein kinases are enzymes, whose main function is based on a transfer of phosphate group from ATP to protein substrate. This common posttranslational modification is involved in the regulation of intracellular processes and cell signaling. Altered expression of protein kinases is often coupled with a development of cancer. Inhibition of protein kinases may prevent cancer cell proliferation and induce their cell death. The main aim of the diploma thesis was to measure inhibition potential of protein kinase inhibitors, alisertib and brigatinib, against carbonyl-reducing enzymes. Overexpression of carbonyl-reducing enzymes in cancer cells may cause resistance to drugs followed by failure of chemotherapeutic therapy. In case of antracyclin chemotherapeutic daunorubicin, carbonyl-reducing enzymes reduce the carbonyl in C-13 giving rise a primary metabolite daunorubicinol, which has lower cytotoxic effect but higher cardiotoxicity. The effort to...