Title:QSAR Study of Novel 1, 8-Naphthimide Derivatives Targeting Nuclear DNA
Volume: 23
Issue: 6
Author(s): Zheng Lian, Yunheng Tai*, Huanling Xia and Honglin Zhai
Affiliation:
- Department of Orthopedics, The 960th Hospital of the
Chinese People’s Liberation Army, Beijing, China
Keywords:
DNA targeting drugs, osteosarcoma, quantitative structure-activity relationship, heuristic method, gene expression programming, nuclear DNA.
Abstract:
Background: 1, 8-naphthimide is a novel tumor inhibitor targeting nuclear DNA, which can be used to
design and develop anti-osteosarcoma drugs.
Objective: Quantitative structure-activity relationship (QSAR) model was established to predict the physical properties
of compounds.
Methods: In this study, gene expression programming (GEP) was used to build a nonlinear quantitative structureactivity
relationship (QSAR) model with descriptors and to predict the activity of a serials novel DNA-targeted chemotherapeutic
agents. These descriptors were calculated in CODESSA software and selected from the descriptor pool
based on heuristics. Three descriptors were selected to establish a multiple linear regression model. The best nonlinear
QSAR model with a correlation coefficient of 0.89 and 0.82 and mean error of 0.02 and 0.06 for the training and test
sets were obtained.
Results: The results showed that the model established by GEP had better stability and predictive ability. The small
molecular docking experiment of 32 compounds was carried out in SYBYL software, and it was found that compound
7A had reliable molecular docking ability.
Conclusion: The established model reveals the factors affecting the activity of DNA inhibitors and provides direction
and guidance for the further design of highly effective DNA-targeting drugs for osteosarcoma.