SMILES-based QSAR approaches for carcinogenicity and anticancer activity: Comparison of correlation weights for identical SMILES attributes

Andrey A. Toropov, Alla P. Toropova, Emilio Benfenati, Giuseppina Gini, Danuta Leszczynska, Jerzy Leszczynski

Research output: Contribution to journalArticlepeer-review

Abstract

CORAL software (http://www.insilico.eu/coral/) has been used for modeling of carcinogenicity (logTD50) of 401 compounds, and anticancer activity (-logIC50) of 100 compounds, on the basis of quantitative structure - activity relationships (QSAR). The simplified molecular input line entry system (SMILES) was used for the representation of the molecular structures. A new additional global invariant of the molecular structure was tested. This is an indicator of the presence of pairs of chemical elements (F, Cl, Br, N, O, S, and P). Three random splits into sub-training, calibration, and test set were examined. Molecular features (calculated with SMILES and statistically significant), which increase the anticancer activity have been identified: their presence in the molecular structure could be helpful criterion in the search for new anticancer agents.

Original languageEnglish
Pages (from-to)974-982
Number of pages9
JournalAnti-Cancer Agents in Medicinal Chemistry
Volume11
Issue number10
Publication statusPublished - Dec 2011

Keywords

  • Anticancer activity
  • Carcinogenicity
  • Coral software
  • Qsar
  • Smiles
  • Validation

ASJC Scopus subject areas

  • Cancer Research
  • Molecular Medicine
  • Pharmacology

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