Open Access

Development of QSAR machine learning-based models to forecast the effect of substances on malignant melanoma cells

  • Authors:
    • Robert Ancuceanu
    • Mihaela Dinu
    • Iana Neaga
    • Fekete Gyula Laszlo
    • Daniel Boda
  • View Affiliations

  • Published online on: February 25, 2019     https://doi.org/10.3892/ol.2019.10068
  • Pages: 4188-4196
  • Copyright: © Ancuceanu et al. This is an open access article distributed under the terms of Creative Commons Attribution License.

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Abstract

SK‑MEL‑5 is a human melanoma cell line that has been used in various studies to explore new therapies against melanoma in different in vitro experiments. Based on this study we report on the development of quantitative structure‑activity relationship (QSAR) models able to predict the cytotoxic effect of diverse chemical compounds on this cancer cell line. The dataset of cytotoxic and inactive compounds were downloaded from the PubChem database. It contains the data for all chemical compounds for which cytotoxicity results expressed by GI50 was recorded. In total 13 blocks of molecular descriptors were computed and used, after appropriate pre‑processing in building QSAR models with four machine learning classifiers: Random forest (RF), gradient boosting, support vector machine and random k‑nearest neighbors. Among the 186 models reported none had a positive predictive value (PPV) higher than 0.90 in both nested cross‑validation and on an external dataset testing, but 7 models had a PPV higher than 0.85 in both evaluations, all seven using the RFs algorithm as a classifier, and topological descriptors, information indices, 2D‑autocorrelation descriptors, P‑VSA‑like descriptors, and edge‑adjacency descriptors as sets of features used for classification. The y‑scrambling test was associated with considerably worse performance (confirming the non‑random character of the models) and the applicability domain was assessed through three different methods.
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May-2019
Volume 17 Issue 5

Print ISSN: 1792-1074
Online ISSN:1792-1082

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Spandidos Publications style
Ancuceanu R, Dinu M, Neaga I, Laszlo FG and Boda D: Development of QSAR machine learning-based models to forecast the effect of substances on malignant melanoma cells. Oncol Lett 17: 4188-4196, 2019.
APA
Ancuceanu, R., Dinu, M., Neaga, I., Laszlo, F.G., & Boda, D. (2019). Development of QSAR machine learning-based models to forecast the effect of substances on malignant melanoma cells. Oncology Letters, 17, 4188-4196. https://doi.org/10.3892/ol.2019.10068
MLA
Ancuceanu, R., Dinu, M., Neaga, I., Laszlo, F. G., Boda, D."Development of QSAR machine learning-based models to forecast the effect of substances on malignant melanoma cells". Oncology Letters 17.5 (2019): 4188-4196.
Chicago
Ancuceanu, R., Dinu, M., Neaga, I., Laszlo, F. G., Boda, D."Development of QSAR machine learning-based models to forecast the effect of substances on malignant melanoma cells". Oncology Letters 17, no. 5 (2019): 4188-4196. https://doi.org/10.3892/ol.2019.10068