PMID- 35983280 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20230730 IS - 2575-9108 (Electronic) IS - 2575-9108 (Linking) VI - 5 IP - 8 DP - 2022 Aug 12 TI - Validating the Arrhythmogenic Potential of High-, Intermediate-, and Low-Risk Drugs in a Human-Induced Pluripotent Stem Cell-Derived Cardiac Microphysiological System. PG - 652-667 LID - 10.1021/acsptsci.2c00088 [doi] AB - Evaluation of arrhythmogenic drugs is required by regulatory agencies before any new compound can obtain market approval. Despite rigorous review, cardiac disorders remain the second most common cause for safety-related market withdrawal. On the other hand, false-positive preclinical findings prohibit potentially beneficial candidates from moving forward in the development pipeline. Complex in vitro models using cardiomyocytes derived from human-induced pluripotent stem cells (hiPSC-CM) have been identified as a useful tool that allows for rapid and cost-efficient screening of proarrhythmic drug risk. Currently available hiPSC-CM models employ simple two-dimensional (2D) culture formats with limited structural and functional relevance to the human heart muscle. Here, we present the use of our 3D cardiac microphysiological system (MPS), composed of a hiPSC-derived heart micromuscle, as a platform for arrhythmia risk assessment. We employed two different hiPSC lines and tested seven drugs with known ion channel effects and known clinical risk: dofetilide and bepridil (high risk); amiodarone and terfenadine (intermediate risk); and nifedipine, mexiletine, and lidocaine (low risk). The cardiac MPS successfully predicted drug cardiotoxicity risks based on changes in action potential duration, beat waveform (i.e., shape), and occurrence of proarrhythmic events of healthy patient hiPSC lines in the absence of risk cofactors. We showcase examples where the cardiac MPS outperformed existing hiPSC-CM 2D models. CI - (c) 2022 American Chemical Society. FAU - Charwat, Verena AU - Charwat V AUID- ORCID: 0000-0002-2222-3702 AD - Department of Bioengineering and California Institute for Quantitative Biosciences (QB3), University of California at Berkeley, Berkeley, California 94720, United States. FAU - Charrez, Berenice AU - Charrez B AD - Department of Bioengineering and California Institute for Quantitative Biosciences (QB3), University of California at Berkeley, Berkeley, California 94720, United States. FAU - Siemons, Brian A AU - Siemons BA AD - Department of Bioengineering and California Institute for Quantitative Biosciences (QB3), University of California at Berkeley, Berkeley, California 94720, United States. FAU - Finsberg, Henrik AU - Finsberg H AUID- ORCID: 0000-0003-3766-2393 AD - Simula Research Laboratory, 0164 Oslo, Norway. FAU - Jaeger, Karoline H AU - Jaeger KH AUID- ORCID: 0000-0003-4234-9094 AD - Simula Research Laboratory, 0164 Oslo, Norway. FAU - Edwards, Andrew G AU - Edwards AG AD - Simula Research Laboratory, 0164 Oslo, Norway. FAU - Huebsch, Nathaniel AU - Huebsch N AUID- ORCID: 0000-0002-3329-0214 AD - Department of Bioengineering and California Institute for Quantitative Biosciences (QB3), University of California at Berkeley, Berkeley, California 94720, United States. FAU - Wall, Samuel AU - Wall S AUID- ORCID: 0000-0002-2487-703X AD - Simula Research Laboratory, 0164 Oslo, Norway. FAU - Miller, Evan AU - Miller E AUID- ORCID: 0000-0002-6556-7679 AD - Department of Chemistry, University of California at Berkeley, Berkeley, California 94720, United States. FAU - Tveito, Aslak AU - Tveito A AD - Simula Research Laboratory, 0164 Oslo, Norway. FAU - Healy, Kevin E AU - Healy KE AUID- ORCID: 0000-0002-8524-3671 AD - Department of Bioengineering and California Institute for Quantitative Biosciences (QB3), University of California at Berkeley, Berkeley, California 94720, United States. AD - Department of Materials Science and Engineering, University of California at Berkeley, Berkeley, California 94720, United States. LA - eng GR - 75N92020D00019/HL/NHLBI NIH HHS/United States GR - R01 HL130417/HL/NHLBI NIH HHS/United States PT - Journal Article DEP - 20220729 PL - United States TA - ACS Pharmacol Transl Sci JT - ACS pharmacology & translational science JID - 101721411 PMC - PMC9380217 COIS- The authors declare the following competing financial interest(s): KEH, VC, BAS, HF, KHJ, AGE, NH, SW and AT have a financial relationship with Organos Inc., and they and the company may benefit from commercialization of the results of this research. EDAT- 2022/08/20 06:00 MHDA- 2022/08/20 06:01 PMCR- 2023/07/29 CRDT- 2022/08/19 02:17 PHST- 2022/05/10 00:00 [received] PHST- 2022/08/19 02:17 [entrez] PHST- 2022/08/20 06:00 [pubmed] PHST- 2022/08/20 06:01 [medline] PHST- 2023/07/29 00:00 [pmc-release] AID - 10.1021/acsptsci.2c00088 [doi] PST - epublish SO - ACS Pharmacol Transl Sci. 2022 Jul 29;5(8):652-667. doi: 10.1021/acsptsci.2c00088. eCollection 2022 Aug 12.