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Evaluation of Cocaine Effect on Endogenous Metabolites of HepG2 Cells Using Targeted Metabolomics.

TitleEvaluation of Cocaine Effect on Endogenous Metabolites of HepG2 Cells Using Targeted Metabolomics.
Publication TypeJournal Article
Year of Publication2021
AuthorsKrokos, A., Deda O., Virgiliou C., Gika H., Raikos N., Aggelidou E., Kritis A., & Theodoridis G.
Date Published2021 Jul 29
KeywordsAlanine, Aspartic Acid, Biomarkers, Chromatography, Liquid, Cocaine, Glutamic Acid, Hep G2 Cells, Humans, Hydrophobic and Hydrophilic Interactions, Metabolic Networks and Pathways, Metabolome, Metabolomics, Multivariate Analysis, Tandem Mass Spectrometry, Taurine

Cocaine toxicity has been a subject of study because cocaine is one of the most common and potent drugs of abuse. In the current study the effect of cocaine on human liver cancer cell line (HepG2) was assessed. Cocaine toxicity (IC50) on HepG2 cells was experimentally calculated using an XTT assay at 2.428 mM. The metabolic profile of HepG2 cells was further evaluated to investigate the cytotoxic activity of cocaine at 2 mM at three different time points. Cell medium and intracellular material samples were analyzed with a validated HILIC-MS/MS method for targeted metabolomics on an ACQUITY Amide column in gradient mode with detection on a triple quadrupole mass spectrometer in multiple reaction monitoring. About 106 hydrophilic metabolites from different metabolic pathways were monitored. Multivariate analysis clearly separated the studied groups (cocaine-treated and control samples) and revealed potential biomarkers in the extracellular and intracellular samples. A predominant effect of cocaine administration on alanine, aspartate, and glutamate metabolic pathway was observed. Moreover, taurine and hypotaurine metabolism were found to be affected in cocaine-treated cells. Targeted metabolomics managed to reveal metabolic changes upon cocaine administration, however deciphering the exact cocaine cytotoxic mechanism is still challenging.

Alternate JournalMolecules
PubMed ID34361761
PubMed Central IDPMC8347943
Grant ListMIS-5000432 / / State Scholarships Foundation /


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