Cited by 78Computational Drug Discovery MethodsMachine Learning in Materials ScienceHistory and advancements in chemistry

ToxiM: A Toxicity Prediction Tool for Small Molecules Developed Using Machine Learning and Chemoinformatics Approaches

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Sharma, Ashok K., Srivastava, Gopal N., Roy, Ankita, Sharma, Vineet K.·2017·Frontiers in Pharmacology

Abstract

The experimental methods for the prediction of molecular toxicity are tedious and time-consuming tasks. Thus, the computational approaches could be used to develop alternative methods for toxicity prediction. We have developed a tool for the prediction of molecular toxicity along with the aqueous solubility and permeability of any molecule/metabolite. Using a comprehensive and curated set of toxin molecules as a training set, the different chemical and structural based features such as descriptors and fingerprints were exploited for feature selection, optimization and development of machine learning based classification and regression models. The compositional differences in the distribution of atoms were apparent between toxins and non-toxins, and hence, the molecular features were used for the classification and regression. On ten-fold cross-validation, the descriptor-based, fingerprint-based and hybrid-based classification models showed similar accuracy (93%) and Matthews’s correlation coefficient (0.84). The performances of all the three models were comparable (Matthews’s correlation coefficient=0.84 - 0.87) on the blind dataset. In addition, the regression-based models using descriptors as input features were also compared and evaluated on the blind dataset. Random forest based regression model for the prediction of solubility performed better (R2 =0.84) than the multi-linear regression and partial least squares regression models, whereas, the partial least square based regression model for the prediction of permeability (caco-2) performed better (R2= 0.68) in comparison to the random forest and multi-linear regression based regression models. The performance of final classification and regression models was evaluated using the two validation datasets including the known toxins and commonly used constituents of health products, which attests to its accuracy. The ToxiM web server would be a highly useful and reliable tool for the prediction of toxicity, solubility, and permeability of small molecules.

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  1. Budavari S. (ed.). (1989). The Merck Index-Encyclopedia of Chemicals, Drugs and Biologicals. Rahway, NJ: Merck and Co., Inc., 446.

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Authors
Sharma, A. K., Srivastava, G. N., Roy, A., & Sharma, V. K.
Affiliations
Indian Institute of Science Education and Research, Bhopal (IN)
Corresponding author
Sharma, Vineet K.
Venue
Frontiers in Pharmacology
Published
2017-11-30
Volume
8
Pages
880-880
ISSN
1663-9812 (ISSN-L)
OpenAlex
W2770630458
Cited by
76
References
49
Citations by year
2026: 6 · 2025: 10 · 2024: 11 · 2023: 11 · 2022: 11 · 2021: 15 · 2020: 6 · 2019: 4 · 2018: 2
FWCI
2.46
Type
journal article
Language
en
Open access
Licence
cc-by
Locations
  • Frontiers in Pharmacology (publishedVersion, cc-by)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
  • Ministry of Education, India (CREST)
  • Indian Institute of Science Education and Research Bhopal
  • Indian Institute of Science Education and Research Mohali
  • Core Research for Evolutional Science and Technology
Topics
  • Physical Sciences › Computer Science › Computational Theory and Mathematics › Computational Drug Discovery Methods
  • Physical Sciences › Materials Science › Materials Chemistry › Machine Learning in Materials Science
  • Physical Sciences › Chemistry › Physical and Theoretical Chemistry › History and advancements in chemistry
Keywords
chemical toxicity prediction, small molecules, water solubility, intestinal permeability, Caco-2 permeability, cheminformatics, molecular descriptors, molecular fingerprints, random forest regression, partial least squares regression

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