Proposal and evaluation of a new norm index-based QSAR model to predict pEC₅₀ and pCC₅₀ activities of HEPT derivatives

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• 作者：Kanwal Shahid¹ ; Qiang Wang¹ ; ^{wang_q@tust.edu.cn" class="auth_mail" title="E-mail the corresponding author} ; Qingzhu Jia² ; Lei Li¹ ; Xue Cui² ; Shuqian Xia³ ; Peisheng Ma³
• 关键词：Mathematical modeling ; Structure&ndash ; activity relationship ; Pharmaceuticals ; HEPT derivatives ; Anti-HIV-1 activity ; Prediction
• 刊名：Chinese Journal of Chemical Engineering
• 出版年：2016
• 出版时间：October 2016
• 年：2016
• 卷：24
• 期：10
• 页码：1464-1469
• 全文大小：787 K

文摘

The search and development of anti-HIV drugs is currently one of the most urgent tasks of pharmacological studies. In this work, a quantitative structure–activity relationship (QSAR) model based on some new norm indexes, was obtained to a series of more than 150 HEPT derivatives (1-[(2-hydroxyethoxy)methyl]-6-(phenylthio)thymine) to find their pEC₅₀ (the required effective concentration to achieve 50% protection of MT-4 cells against the cytopathic effect of virus) and pCC₅₀ (the required cytotoxic concentration to reduce visibility of 50% mock infected cell) activities. The model efficiencies were then validated using the leave-one-out cross validation (LOO-CV) and y-randomization test. Results indicated that this new model was efficient and could provide satisfactory results for prediction of pEC₅₀ and pCC₅₀ with the higher R_train² and the higher R_test². By using the leverage approach, the applicability domain of this model was further investigated and no response outlier was detected for HEPT derivatives involved in this work. Comparison results with reference methods demonstrated that this new method could result in significant improvements for predicting pEC₅₀ and pCC₅₀ of anti-HIV HEPT derivatives. Moreover, results shown in this present study suggested that these two absolutely different activities pEC₅₀ and pCC₅₀ of anti-HIV HEPT derivatives could be predicted well with a totally similar QSAR model, which indicated that this model might have the potential to be further utilized for other biological activities of HEPT derivatives.