QSAR modeling and molecular docking studies on benzimidazole derivatives as anticancer agents

Hoang Phuc Nguyen; Thi Kim Chi Huynh; Khac Minh Thai; Thi Kim Dung Hoang

doi:10.15625/2525-2518/17072

Author affiliations

Authors

Hoang Phuc Nguyen Institute of Chemical Technology,Vietnam Academy of Science and Technology, 1A Thanh Loc 29 Street, District 12, Ho Chi Minh City, Viet Nam
Thi Kim Chi Huynh Institute of Chemical Technology,Vietnam Academy of Science and Technology, 1A Thanh Loc 29 Street, District 12, Ho Chi Minh City, Viet Nam https://orcid.org/0000-0002-6214-8022
Khac Minh Thai Department of Medicinal Chemistry, Faculty of Pharmacy, University of Medicine and Phar-macy at Ho Chi Minh City, 41-43 Dinh Tien Hoang, District 1, Ho Chi Minh City, Viet Nam
Thi Kim Dung Hoang Institute of Chemical Technology,Vietnam Academy of Science and Technology, 1A Thanh Loc 29 Street, District 12, Ho Chi Minh City, Viet Nam

DOI:

https://doi.org/10.15625/2525-2518/17072

Keywords:

Benzimidazole, QSAR, anticancer, MDA-MB-231, molecular docking, topoisomerase I

Abstract

Abstract. The triple-negative breast cancer cell line MDA-MB-231 has been known as one of the most tenacious cancer cancer cells and paid attention by many researchers. A two-dimension quantitative structure-activity relationship (2D-QSAR) model of 131 benzimidazole derivatives was developed to relate the chemical–biological interactions and predicted the half maximal inhibitory concentration (IC₅₀) against MDA-MB-231 cell line. The 2D-QSAR model was obtained satisfactory internal and external validation parameters such as the square of correlation coefficient R² = 0.904 and concordance correlation coefficient CCC = 0.867. The model was and applied on 35 synthesized benzimidazoles to predict IC₅₀ values. The results showed that benzimidazoles with IC₅₀ less than 50 µM displayed a quite similarity between predicted and experimental IC₅₀ values (R_a² = 0.924). The molecular docking study was investigated to clarify the binding mode of the most potential synthesized benzimidazoles (BLMM, and BL3H) into topoisomerase I-DNA complex. The docking results revealed that they intercalated and interacted to crucial amino acids in the binding site of complex by hydrogen bonds and hydrophobic interactions and compared to standard drug camptothecin.

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