Nature Communications (Jun 2024)

Tracking single hiPSC-derived cardiomyocyte contractile function using CONTRAX an efficient pipeline for traction force measurement

  • Gaspard Pardon,
  • Alison S. Vander Roest,
  • Orlando Chirikian,
  • Foster Birnbaum,
  • Henry Lewis,
  • Erica A. Castillo,
  • Robin Wilson,
  • Aleksandra K. Denisin,
  • Cheavar A. Blair,
  • Colin Holbrook,
  • Kassie Koleckar,
  • Alex C. Y. Chang,
  • Helen M. Blau,
  • Beth L. Pruitt

DOI
https://doi.org/10.1038/s41467-024-49755-3
Journal volume & issue
Vol. 15, no. 1
pp. 1 – 19

Abstract

Read online

Abstract Cardiomyocytes derived from human induced pluripotent stem cells (hiPSC-CMs) are powerful in vitro models to study the mechanisms underlying cardiomyopathies and cardiotoxicity. Quantification of the contractile function in single hiPSC-CMs at high-throughput and over time is essential to disentangle how cellular mechanisms affect heart function. Here, we present CONTRAX, an open-access, versatile, and streamlined pipeline for quantitative tracking of the contractile dynamics of single hiPSC-CMs over time. Three software modules enable: parameter-based identification of single hiPSC-CMs; automated video acquisition of >200 cells/hour; and contractility measurements via traction force microscopy. We analyze >4,500 hiPSC-CMs over time in the same cells under orthogonal conditions of culture media and substrate stiffnesses; +/− drug treatment; +/− cardiac mutations. Using undirected clustering, we reveal converging maturation patterns, quantifiable drug response to Mavacamten and significant deficiencies in hiPSC-CMs with disease mutations. CONTRAX empowers researchers with a potent quantitative approach to develop cardiac therapies.