{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,12]],"date-time":"2025-10-12T04:12:04Z","timestamp":1760242324371,"version":"build-2065373602"},"reference-count":31,"publisher":"MDPI AG","issue":"2","license":[{"start":{"date-parts":[[2017,4,24]],"date-time":"2017-04-24T00:00:00Z","timestamp":1492992000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/100007393","name":"Association Fran\u00e7aise contre les Myopathies","doi-asserted-by":"publisher","award":["15454"],"award-info":[{"award-number":["15454"]}],"id":[{"id":"10.13039\/100007393","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Cells"],"abstract":"<jats:p>Specific mutations in LMNA, which encodes nuclear intermediate filament proteins lamins A\/C, affect skeletal muscle tissues. Early-onset LMNA myopathies reveal different alterations of muscle fibers, including fiber type disproportion or prominent dystrophic and\/or inflammatory changes. Recently, we identified the p.R388P LMNA mutation as responsible for congenital muscular dystrophy (L-CMD) and lipodystrophy. Here, we asked whether viral-mediated expression of mutant lamin A in murine skeletal muscles would be a pertinent model to reveal specific muscle alterations. We found that the total amount and size of muscle fibers as well as the extent of either inflammation or muscle regeneration were similar to wildtype or mutant lamin A. In contrast, the amount of fast oxidative muscle fibers containing myosin heavy chain IIA was lower upon expression of mutant lamin A, in correlation with lower expression of genes encoding transcription factors MEF2C and MyoD. These data validate this in vivo model for highlighting distinct muscle phenotypes associated with different lamin contexts. Additionally, the data suggest that alteration of muscle fiber type identity may contribute to the mechanisms underlying physiopathology of L-CMD related to R388P mutant lamin A.<\/jats:p>","DOI":"10.3390\/cells6020010","type":"journal-article","created":{"date-parts":[[2017,4,24]],"date-time":"2017-04-24T13:10:11Z","timestamp":1493039411000},"page":"10","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":4,"title":["Distinct Fiber Type Signature in Mouse Muscles Expressing a Mutant Lamin A Responsible for Congenital Muscular Dystrophy in a Patient"],"prefix":"10.3390","volume":"6","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-7643-8672","authenticated-orcid":false,"given":"Alice","family":"Barateau","sequence":"first","affiliation":[{"name":"Unit\u00e9 de Biologie Fonctionnelle et Adaptative (BFA), CNRS UMR 8251, Universit\u00e9 Paris Diderot, Sorbonne Paris Cit\u00e9, 75013 Paris, France"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Nathalie","family":"Vadrot","sequence":"additional","affiliation":[{"name":"Unit\u00e9 de Biologie Fonctionnelle et Adaptative (BFA), CNRS UMR 8251, Universit\u00e9 Paris Diderot, Sorbonne Paris Cit\u00e9, 75013 Paris, France"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Onnik","family":"Agbulut","sequence":"additional","affiliation":[{"name":"Biological Adaptation and Ageing, UMR CNRS 8256, Institut de Biologie Paris-Seine (IBPS), UPMC Univ Paris 06, Sorbonne Universit\u00e9s, 75005 Paris, France"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Patrick","family":"Vicart","sequence":"additional","affiliation":[{"name":"Unit\u00e9 de Biologie Fonctionnelle et Adaptative (BFA), CNRS UMR 8251, Universit\u00e9 Paris Diderot, Sorbonne Paris Cit\u00e9, 75013 Paris, France"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Sabrina","family":"Batonnet-Pichon","sequence":"additional","affiliation":[{"name":"Unit\u00e9 de Biologie Fonctionnelle et Adaptative (BFA), CNRS UMR 8251, Universit\u00e9 Paris Diderot, Sorbonne Paris Cit\u00e9, 75013 Paris, France"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Brigitte","family":"Buendia","sequence":"additional","affiliation":[{"name":"Unit\u00e9 de Biologie Fonctionnelle et Adaptative (BFA), CNRS UMR 8251, Universit\u00e9 Paris Diderot, Sorbonne Paris Cit\u00e9, 75013 Paris, France"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2017,4,24]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"832","DOI":"10.1101\/gad.1652708","article-title":"Nuclear lamins: Major factors in the structural organization and function of the nucleus and chromatin","volume":"22","author":"Dechat","year":"2008","journal-title":"Genes Dev."},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"131","DOI":"10.1146\/annurev-biochem-060614-034115","article-title":"Lamins: Nuclear intermediate filament proteins with fundamental functions in nuclear mechanics and genome regulation","volume":"84","author":"Gruenbaum","year":"2015","journal-title":"Annu. 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