Metabolite signatures of doxorubicin induced toxicity in human induced pluripotent stem cell-derived cardiomyocytes.

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Title: Metabolite signatures of doxorubicin induced toxicity in human induced pluripotent stem cell-derived cardiomyocytes.
Authors: Chaudhari, U
Ellis, JK
Wagh, V
Nemade, H
Hescheler, J
Keun, HC
Sachinidis, A
Item Type: Journal Article
Abstract: Drug-induced off-target cardiotoxicity, particularly following anti-cancer therapy, is a major concern in new drug discovery and development. To ensure patient safety and efficient pharmaceutical drug development, there is an urgent need to develop more predictive cell model systems and distinct toxicity signatures. In this study, we applied our previously proposed repeated exposure toxicity methodology and performed (1)H NMR spectroscopy-based extracellular metabolic profiling in culture medium of human induced pluripotent stem cell-derived cardiomyocytes (hiPSC-CMs) exposed to doxorubicin (DOX), an anti-cancer agent. Single exposure to DOX did not show alteration in the basal level of extracellular metabolites while repeated exposure to DOX caused reduction in the utilization of pyruvate and acetate, and accumulation of formate compared to control culture medium. During drug washout, only pyruvate showed reversible effect and restored its utilization by hiPSC-CMs. On the other hand, formate and acetate showed irreversible effect in response to DOX exposure. DOX repeated exposure increased release of lactate dehydrogenase (LDH) in culture medium suggesting cytotoxicity events, while declined ATP levels in hiPSC-CMs. Our data suggests DOX perturbed mitochondrial metabolism in hiPSC-CMs. Pyruvate, acetate and formate can be used as metabolite signatures of DOX induced cardiotoxicity. Moreover, the hiPSC-CMs model system coupled with metabolomics technology offers a novel and powerful approach to strengthen cardiac safety assessment during new drug discovery and development.
Issue Date: 18-Apr-2017
Date of Acceptance: 8-Apr-2017
ISSN: 0939-4451
Publisher: Springer Verlag
Start Page: 1955
End Page: 1963
Journal / Book Title: Amino Acids
Volume: 49
Issue: 12
Copyright Statement: © The Author(s) 2017. This article is an open access publication
Keywords: 1H NMR metabolomics
Metabolite biomarkers
Pluripotent stem cells
Toxicity prediction
1101 Medical Biochemistry And Metabolomics
0304 Medicinal And Biomolecular Chemistry
Biochemistry & Molecular Biology
Publication Status: Published
Appears in Collections:Division of Surgery
Division of Cancer
Faculty of Medicine

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