期刊
MOLECULES
卷 24, 期 20, 页码 -出版社
MDPI
DOI: 10.3390/molecules24203711
关键词
tyrosyl-DNA phosphodiesterase 1 (Tdp1); topotecan; topoisomerase 1; usnic acid; molecular modeling; synergetic effect; inhibiting activity
资金
- Russian Science Foundation [19-13-00040]
- Ministry of Education and Science of Russia [075-11-2018-172, RFMEFI62418X0051]
- Russian Science Foundation [19-13-00040] Funding Source: Russian Science Foundation
Tyrosyl-DNA phosphodiesterase 1 (Tdp1) is a promising therapeutic target in cancer therapy. Combination chemotherapy using Tdp1 inhibitors as a component can potentially improve therapeutic response to many chemotherapeutic regimes. A new set of usnic acid derivatives with hydrazonothiazole pharmacophore moieties were synthesized and evaluated as Tdp1 inhibitors. Most of these compounds were found to be potent inhibitors with IC50 values in the low nanomolar range. The activity of the compounds was verified by binding experiments and supported by molecular modeling. The ability of the most effective inhibitors, used at non-toxic concentrations, to sensitize tumors to the anticancer drug topotecan was also demonstrated. The order of administration of the inhibitor and topotecan on their synergistic effect was studied, suggesting that prior or simultaneous introduction of the inhibitor with topotecan is the most effective.
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