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Increased predominance of the matured ventricular subtype in embryonic stem cell-derived cardiomyocytes in vivo

Accumulating evidence suggests that human pluripotent stem cell-derived cardiomyocytes can affect “heart regeneration”, replacing injured cardiac scar tissue with concomitant electrical integration. However, electrically coupled graft cardiomyocytes were found to innately induce transient post-trans...

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Published in:Scientific reports 2020-07, Vol.10 (1), p.11883-11883, Article 11883
Main Authors: Ichimura, Hajime, Kadota, Shin, Kashihara, Toshihide, Yamada, Mitsuhiko, Ito, Kuniaki, Kobayashi, Hideki, Tanaka, Yuki, Shiba, Naoko, Chuma, Shinichiro, Tohyama, Shugo, Seto, Tatsuichiro, Okada, Kenji, Kuwahara, Koichiro, Shiba, Yuji
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cited_by cdi_FETCH-LOGICAL-c621t-caf8b4863de3b2ba724c70e6059131060f151ad876004c705053f16ce1524faa3
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creator Ichimura, Hajime
Kadota, Shin
Kashihara, Toshihide
Yamada, Mitsuhiko
Ito, Kuniaki
Kobayashi, Hideki
Tanaka, Yuki
Shiba, Naoko
Chuma, Shinichiro
Tohyama, Shugo
Seto, Tatsuichiro
Okada, Kenji
Kuwahara, Koichiro
Shiba, Yuji
description Accumulating evidence suggests that human pluripotent stem cell-derived cardiomyocytes can affect “heart regeneration”, replacing injured cardiac scar tissue with concomitant electrical integration. However, electrically coupled graft cardiomyocytes were found to innately induce transient post-transplant ventricular tachycardia in recent large animal model transplantation studies. We hypothesised that these phenomena were derived from alterations in the grafted cardiomyocyte characteristics. In vitro experiments showed that human embryonic stem cell-derived cardiomyocytes (hESC-CMs) contain nodal-like cardiomyocytes that spontaneously contract faster than working-type cardiomyocytes. When transplanted into athymic rat hearts, proliferative capacity was lower for nodal-like than working-type cardiomyocytes with grafted cardiomyocytes eventually comprising only relatively matured ventricular cardiomyocytes. RNA-sequencing of engrafted hESC-CMs confirmed the increased expression of matured ventricular cardiomyocyte-related genes, and simultaneous decreased expression of nodal cardiomyocyte-related genes. Temporal engraftment of electrical excitable nodal-like cardiomyocytes may thus explain the transient incidence of post-transplant ventricular tachycardia, although further large animal model studies will be required to control post-transplant arrhythmia.
doi_str_mv 10.1038/s41598-020-68373-9
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subjects 631/532/2117
631/532/489
Action Potentials
Animal models
Arrhythmia
Biomarkers
Cardiac arrhythmia
Cardiomyocytes
Cell Differentiation
Embryonic Stem Cells - cytology
Embryonic Stem Cells - metabolism
Engraftment
Fluorescent Antibody Technique
Gene Expression
Gene Expression Profiling
Heart Ventricles - cytology
Heart Ventricles - metabolism
Humanities and Social Sciences
Immunohistochemistry
multidisciplinary
Myocytes, Cardiac - cytology
Myocytes, Cardiac - metabolism
Phylogeny
Pluripotency
Regeneration
Ribonucleic acid
RNA
Science
Science (multidisciplinary)
Stem cells
Tachycardia
Transplants & implants
Ventricle
title Increased predominance of the matured ventricular subtype in embryonic stem cell-derived cardiomyocytes in vivo
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