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A non-conformational QSAR study for plant-derived larvicides against Zika Aedes aegypti L. vector

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Abstract

A set of 263 plant-derived compounds with larvicidal activity against Aedes aegypti L. (Diptera: Culicidae) vector is collected from the literature, and is studied by means of a non-conformational quantitative structure-activity relationships (QSAR) approach. The balanced subsets method (BSM) is employed to split the complete dataset into training, validation and test sets. From 26,775 freely available molecular descriptors, the most relevant structural features of compounds affecting the bioactivity are taken. The molecular descriptors are calculated through four different freewares, such as PaDEL, Mold2, EPI Suite and QuBiLs-MAS. The replacement method (RM) variable subset selection technique leads to the best linear regression models. A successful QSAR equation involves 7-conformation-independent molecular descriptors, fulfiling the evaluated internal (loo, l30%o, VIF and Y-randomization) and external (test set with Ntest = 65 compounds) validation criteria. The practical application of this QSAR model reveals promising predicted values for some natural compounds with unknown experimental larvicidal activity. Therefore, the present model constitutes the first one based on a large molecular set, being a useful computational tool for identifying and guiding the synthesis of new active molecules inspired by natural products.

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Acknowledgements

PRD acknowledges the financial support from the National Scientific and Technical Research Council of Argentina (CONICET) PIP11220130100311 project and to the Ministerio de Ciencia, Tecnología e Innovación Productiva for the electronic library facilities. PRD and GPR are members of the scientific researcher career of CONICET.

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Correspondence to Laura M. Saavedra or Pablo R. Duchowicz.

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Saavedra, L.M., Romanelli, G.P. & Duchowicz, P.R. A non-conformational QSAR study for plant-derived larvicides against Zika Aedes aegypti L. vector. Environ Sci Pollut Res 27, 6205–6214 (2020). https://doi.org/10.1007/s11356-019-06630-9

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  • DOI: https://doi.org/10.1007/s11356-019-06630-9

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