TY - JOUR KW - induced pluripotent stem cells KW - Pluripotent Stem Cells KW - Regenerative Medicine AU - Anna B. Meier AU - Dorota Zawada AU - Maria Teresa De Angelis AU - Laura D. Martens AU - Gianluca Santamaria AU - Sophie Zengerle AU - Monika Nowak-Imialek AU - Jessica Kornherr AU - Fangfang Zhang AU - Qinghai Tian AU - Cordula M. Wolf AU - Christian Kupatt AU - Makoto Sahara AU - Peter Lipp AU - Fabian J. Theis AU - Julien Gagneur AU - Alexander Goedel AU - Karl-Ludwig Laugwitz AU - Tatjana Dorn AU - Alessandra Moretti AB - The epicardium, the mesothelial envelope of the vertebrate heart, is the source of multiple cardiac cell lineages during embryonic development and provides signals that are essential to myocardial growth and repair. Here we generate self-organizing human pluripotent stem cell-derived epicardioids that display retinoic acid-dependent morphological, molecular and functional patterning of the epicardium and myocardium typical of the left ventricular wall. By combining lineage tracing, single-cell transcriptomics and chromatin accessibility profiling, we describe the specification and differentiation process of different cell lineages in epicardioids and draw comparisons to human fetal development at the transcriptional and morphological levels. We then use epicardioids to investigate the functional cross-talk between cardiac cell types, gaining new insights into the role of IGF2/IGF1R and NRP2 signaling in human cardiogenesis. Finally, we show that epicardioids mimic the multicellular pathogenesis of congenital or stress-induced hypertrophy and fibrotic remodeling. As such, epicardioids offer a unique testing ground of epicardial activity in heart development, disease and regeneration. BT - Nature Biotechnology DA - 2023-04-03 DO - 10.1038/s41587-023-01718-7 LA - en N2 - The epicardium, the mesothelial envelope of the vertebrate heart, is the source of multiple cardiac cell lineages during embryonic development and provides signals that are essential to myocardial growth and repair. Here we generate self-organizing human pluripotent stem cell-derived epicardioids that display retinoic acid-dependent morphological, molecular and functional patterning of the epicardium and myocardium typical of the left ventricular wall. By combining lineage tracing, single-cell transcriptomics and chromatin accessibility profiling, we describe the specification and differentiation process of different cell lineages in epicardioids and draw comparisons to human fetal development at the transcriptional and morphological levels. We then use epicardioids to investigate the functional cross-talk between cardiac cell types, gaining new insights into the role of IGF2/IGF1R and NRP2 signaling in human cardiogenesis. Finally, we show that epicardioids mimic the multicellular pathogenesis of congenital or stress-induced hypertrophy and fibrotic remodeling. As such, epicardioids offer a unique testing ground of epicardial activity in heart development, disease and regeneration. PY - 2023 SP - 1 EP - 14 T2 - Nature Biotechnology TI - Epicardioid single-cell genomics uncovers principles of human epicardium biology in heart development and disease UR - https://www.nature.com/articles/s41587-023-01718-7 Y2 - 2023-09-15 SN - 1546-1696 ER -