Key result
Dual excitation-contraction recording platform integrates electrophysiology and contractility data for cardiotoxicity screening.
Why the study?
hiPSC-derived cardiomyocytes often assess drug toxicity through ion channel effects without evaluating contractility, despite growing interest in integrating contractility with electrophysiological signals to comprehensively evaluate cardiac responses.
A novel hydrogel-free dual excitation-contraction recording system enables comprehensive multi-parameter assessment of drug toxicity and disease modeling in hiPSC-derived cardiomyocytes.
DEC platform may enable integrated toxicity screening in hiPSC tissues; leaves open clinical translation pending validation.
Human induced pluripotent stem cell (hiPSC)-derived cardiomyocytes (CMs) are increasingly used to assess drug toxicity through effects on ion channels; however, contractility is not always evaluated. Interest in integrating contractility data from engineered heart tissue with electrophysiological signals to more comprehensively assess human cardiac responses is growing. In this study, we develop a scalable platform, a dual excitation-contraction (DEC) recording system, to generate engineered heart tissue without using collagen or fibrin gels. This device is compatible with commercial multi-electrode array systems and enables contractility data collection through optical observation. We validate the system using several drugs with varying torsade de pointes risks, underscoring the advantage of comprehensive, multi-parameter readouts over single-parameter analyses. Additionally, we use this device for disease modeling, such as myosin-binding protein C (MYBPC3) deficiency, and successfully replicate contractile deficits in the engineered heart tissues.
No takes yet. Share an insight, caveat, or question.
Li et al. (2026) studied Drug toxicity and MYBPC3 deficiency. Dual excitation-contraction (DEC) recording system was evaluated on Contractility and electrophysiological signals. A scalable, hydrogel-free dual excitation-contraction recording system successfully integrated contractility and electrophysiological data for drug toxicity assessment and disease modeling.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: