{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,29]],"date-time":"2026-09-29T06:22:45Z","timestamp":1790662965741,"version":"4.1.0"},"reference-count":95,"publisher":"MDPI AG","issue":"9","license":[{"start":{"date-parts":[[2021,4,21]],"date-time":"2021-04-21T00:00:00Z","timestamp":1618963200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["IJMS"],"abstract":"<jats:p>The Wilms\u2019 tumor suppressor Wt1 is involved in multiple developmental processes and adult tissue homeostasis. The first phenotypes recognized in Wt1 knockout mice were developmental cardiac and kidney defects. Wt1 expression in the heart has been described in epicardial, endothelial, smooth muscle cells, and fibroblasts. Expression of Wt1 in cardiomyocytes has been suggested but remained a controversial issue, as well as the role of Wt1 in cardiomyocyte development and regeneration after injury. We determined cardiac Wt1 expression during embryonic development, in the adult, and after cardiac injury by quantitative RT-PCR and immunohistochemistry. As in vitro model, phenotypic cardiomyocyte differentiation, i.e., the appearance of rhythmically beating clones from mouse embryonic stem cells (mESCs) and associated changes in gene expression were analyzed. We detected Wt1 in cardiomyocytes from embryonic day (E10.5), the first time point investigated, until adult age. Cardiac Wt1 mRNA levels decreased during embryonic development. In the adult, Wt1 was reactivated in cardiomyocytes 48 h and 3 weeks following myocardial infarction. Wt1 mRNA levels were increased in differentiating mESCs. Overexpression of Wt1(-KTS) and Wt1(+KTS) isoforms in ES cells reduced the fraction of phenotypically cardiomyocyte differentiated clones, which was preceded by a temporary increase in c-kit expression in Wt1(-KTS) transfected ES cell clones and induction of some cardiomyocyte markers. Taken together, Wt1 shows a dynamic expression pattern during cardiomyocyte differentiation and overexpression in ES cells reduces their phenotypical cardiomyocyte differentiation.<\/jats:p>","DOI":"10.3390\/ijms22094346","type":"journal-article","created":{"date-parts":[[2021,4,21]],"date-time":"2021-04-21T12:47:07Z","timestamp":1619009227000},"page":"4346","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":19,"title":["Implications of the Wilms\u2019 Tumor Suppressor Wt1 in Cardiomyocyte Differentiation"],"prefix":"10.3390","volume":"22","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-2746-0707","authenticated-orcid":false,"given":"Nicole","family":"Wagner","sequence":"first","affiliation":[{"name":"CNRS, INSERM, iBV, Universit\u00e9 C\u00f4te d\u2019Azur, 06107 Nice, France"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Marina","family":"Ninkov","sequence":"additional","affiliation":[{"name":"CNRS, INSERM, iBV, Universit\u00e9 C\u00f4te d\u2019Azur, 06107 Nice, France"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ana","family":"Vukolic","sequence":"additional","affiliation":[{"name":"CNRS, INSERM, iBV, Universit\u00e9 C\u00f4te d\u2019Azur, 06107 Nice, France"},{"name":"Roche Glycart AG, 8952 Schlieren, Switzerland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"G\u00fcnseli","family":"Cubukcuoglu Deniz","sequence":"additional","affiliation":[{"name":"Stem Cell Institute, Ankara University, 06520 Ankara, Turkey"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Minoo","family":"Rassoulzadegan","sequence":"additional","affiliation":[{"name":"CNRS, INSERM, iBV, Universit\u00e9 C\u00f4te d\u2019Azur, 06107 Nice, France"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jean-Fran\u00e7ois","family":"Michiels","sequence":"additional","affiliation":[{"name":"Department of Pathology, CHU Nice, 06107 Nice, France"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5483-7760","authenticated-orcid":false,"given":"Kay-Dietrich","family":"Wagner","sequence":"additional","affiliation":[{"name":"CNRS, INSERM, iBV, Universit\u00e9 C\u00f4te d\u2019Azur, 06107 Nice, France"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2021,4,21]]},"reference":[{"key":"ref_1","first-page":"1023","article-title":"Expression of the Wilms\u2019 tumor suppressor gene WT1 during mouse embryogenesis","volume":"4","author":"Rackley","year":"1993","journal-title":"Cell Growth Differ."},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"2862","DOI":"10.1242\/dev.153163","article-title":"Wilms\u2019 tumour 1 (WT1) in development, homeostasis and disease","volume":"144","author":"Hastie","year":"2017","journal-title":"Development"},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"1653","DOI":"10.1242\/jcs.00405","article-title":"The complex life of WT1","volume":"116","author":"Wagner","year":"2003","journal-title":"J. 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