A Novel Class of Tyrosyl-DNA Phosphodiesterase 1 Inhibitors That Contains the Octahydro-2H-chromen-4-ol Scaffold.

Li-Zhulanov, Nikolai S.; Zakharenko, Alexandra L.; Chepanova, Arina A.; Patel, Jinal; Zafar, Ayesha; Volcho, Konstantin P.; Salakhutdinov, Nariman F.; Reynisson, Jóhannes; Leung, Ivanhoe K.H.; Lavrik, Olga I.

Abstract

Tyrosyl-DNA phosphodiesterase 1 (Tdp1) is a DNA repair enzyme that mends topoisomerase 1-mediated DNA damage. Tdp1 is a current inhibition target for the development of improved anticancer treatments, as its inhibition may enhance the therapeutic effect of topoisomerase 1 poisons. Here, we report a study on the development of a novel class of Tdp1 inhibitors that is based on the octahydro-2H-chromene scaffold. Inhibition and binding assays revealed that these compounds are potent inhibitors of Tdp1, with IC50 and KD values in the low micromolar concentration range. Molecular modelling predicted plausible conformations of the active ligands, blocking access to the enzymatic machinery of Tdp1. Our results thus help establish a structural-activity relationship for octahydro-2H-chromene-based Tdp1 inhibitors, which will be useful for future Tdp1 inhibitor development work.

Citation

Li-Zhulanov, N. S., Zakharenko, A. L., Chepanova, A. A., Patel, J., Zafar, A., Volcho, K. P., …Lavrik, O. I. (2018). A Novel Class of Tyrosyl-DNA Phosphodiesterase 1 Inhibitors That Contains the Octahydro-2H-chromen-4-ol Scaffold. Molecules, 23(10), Article 2468. https://doi.org/10.3390/molecules23102468

• Journal Article Type: Article
• Acceptance Date: Sep 22, 2018
• Publication Date: Sep 26, 2018
• Journal: Molecules
• Publisher: MDPI
• Peer Reviewed: Peer Reviewed
• Volume: 23
• Issue: 10
• Article Number: 2468
• DOI: https://doi.org/10.3390/molecules23102468
• Keywords: DNA repair enzyme, Tdp1 inhibitor, anticancer agent, biochemical assay, chemical space, molecular modeling, structural-activity relationships, synthesis, Benzopyrans, Humans, Models, Molecular, Phosphodiesterase Inhibitors, Phosphoric Diester Hydrolases, Structure-Activity Relationship
• Publisher URL: https://www.mdpi.com/1420-3049/23/10/2468