A Novel Fluorescent Reporter System Identifies Laminin-511/521 as Potent Regulators of Cardiomyocyte Maturation

Pluripotent stem cell-derived cardiomyocytes (PSC-CMs) hold great promise for disease modeling and drug discovery. However, PSC-CMs exhibit immature phenotypes in culture, and the lack of maturity limits their broad applications. While physical and functional analyses are generally used to determine...

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Veröffentlicht in:Scientific reports 2020-03, Vol.10 (1), p.4249-4249, Article 4249
Hauptverfasser: Chanthra, Nawin, Abe, Tomoyuki, Miyamoto, Matthew, Sekiguchi, Kiyotoshi, Kwon, Chulan, Hanazono, Yutaka, Uosaki, Hideki
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container_title Scientific reports
container_volume 10
creator Chanthra, Nawin
Abe, Tomoyuki
Miyamoto, Matthew
Sekiguchi, Kiyotoshi
Kwon, Chulan
Hanazono, Yutaka
Uosaki, Hideki
description Pluripotent stem cell-derived cardiomyocytes (PSC-CMs) hold great promise for disease modeling and drug discovery. However, PSC-CMs exhibit immature phenotypes in culture, and the lack of maturity limits their broad applications. While physical and functional analyses are generally used to determine the status of cardiomyocyte maturation, they could be time-consuming and often present challenges in comparing maturation-enhancing strategies. Therefore, there is a demand for a method to assess cardiomyocyte maturation rapidly and reproducibly. In this study, we found that Myomesin-2 ( Myom2 ), encoding M-protein, is upregulated postnatally, and based on this, we targeted TagRFP to the Myom2 locus in mouse embryonic stem cells. Myom2-RFP + PSC-CMs exhibited more mature phenotypes than RFP - cells in morphology, function and transcriptionally, conductive to sarcomere shortening assays. Using this system, we screened extracellular matrices (ECMs) and identified laminin-511/521 as potent enhancers of cardiomyocyte maturation. Together, we developed and characterized a novel fluorescent reporter system for the assessment of cardiomyocyte maturation and identified potent maturation-enhancing ECMs through this simple and rapid assay. This system is expected to facilitate use of PSC-CMs in a variety of scientific and medical investigations.
doi_str_mv 10.1038/s41598-020-61163-3
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subjects 631/136
631/532/2064
631/61/32
631/80/79/750
692/4019/592
Biomarkers
Calcium
Cardiomyocytes
Cell culture
Cell Differentiation - genetics
Computational Biology - methods
Cytology
Embryo cells
Enhancers
Extracellular Matrix - metabolism
Gene Expression
Gene Expression Profiling
Genes, Reporter
Humanities and Social Sciences
Laminin
Laminin - genetics
Laminin - metabolism
Maturation
multidisciplinary
Myocytes, Cardiac - cytology
Myocytes, Cardiac - metabolism
Phenotypes
Pluripotency
Pluripotent Stem Cells - cytology
Pluripotent Stem Cells - metabolism
Sarcomeres - metabolism
Science
Science (multidisciplinary)
Stem cell transplantation
Stem cells
Transcription
Transcription, Genetic
Transcriptome
title A Novel Fluorescent Reporter System Identifies Laminin-511/521 as Potent Regulators of Cardiomyocyte Maturation
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