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Alliance"],"published-print":{"date-parts":[[2023,6]]},"abstract":"<jats:p>\n                    Postnatal skeletal muscle development is a highly dynamic period associated with widespread alternative splicing changes required to adapt tissues to adult function. These splicing events have significant implications because the reversion of adult mRNA isoforms to fetal isoforms is observed in forms of muscular dystrophy. LIMCH1 is a stress fiber\u2013associated protein that is alternatively spliced to generate uLIMCH1, a ubiquitously expressed isoform, and mLIMCH1, a skeletal muscle\u2013specific isoform containing six additional exons simultaneously included after birth in the mouse. CRISPR\/Cas9 was used to delete the six alternatively spliced exons of LIMCH1 in mice, thereby forcing the constitutive expression of the predominantly fetal isoform, uLIMCH1. mLIMCH1 knockout mice had significant grip strength weakness in vivo, and maximum force generated was decreased ex vivo. Calcium-handling deficits were observed during myofiber stimulation that could explain the mechanism by which mLIMCH1 knockout leads to muscle weakness. In addition,\n                    <jats:italic>LIMCH1<\/jats:italic>\n                    is mis-spliced in myotonic dystrophy type 1, with the muscleblind-like (MBNL) family of proteins acting as the likely major regulator of\n                    <jats:italic>Limch1<\/jats:italic>\n                    alternative splicing in skeletal muscle.\n                  <\/jats:p>","DOI":"10.26508\/lsa.202201868","type":"journal-article","created":{"date-parts":[[2023,3,28]],"date-time":"2023-03-28T15:30:54Z","timestamp":1680017454000},"page":"e202201868","update-policy":"https:\/\/doi.org\/10.26508\/lsa.crossmarkpolicy","source":"Crossref","is-referenced-by-count":8,"title":["The role of\n                    <i>Limch1<\/i>\n                    alternative splicing in skeletal muscle function"],"prefix":"10.26508","volume":"6","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-3979-8465","authenticated-orcid":false,"given":"Matthew 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