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JCI MBNL overexpression rescues cardiac phenotypes in a myotonic dystrophy type 1 heart mouse model

Summary by jci.org
Myotonic dystrophy type 1 (DM1) is an autosomal dominant disease caused by a CTG repeat expansion in the dystrophia myotonica protein kinase (DMPK) gene. The expanded CUG repeat RNA (CUGexp RNA) transcribed from the mutant allele sequesters the muscleblind-like (MBNL) family of RNA-binding proteins, causing their loss of function and disrupting regulated pre-mRNA processing. We used a DM1 heart mouse model that inducibly expresses CUGexp RNA to …
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JCI MBNL overexpression rescues cardiac phenotypes in a myotonic dystrophy type 1 heart mouse model

Myotonic dystrophy type 1 (DM1) is an autosomal dominant disease caused by a CTG repeat expansion in the dystrophia myotonica protein kinase (DMPK) gene. The expanded CUG repeat RNA (CUGexp RNA) transcribed from the mutant allele sequesters the muscleblind-like (MBNL) family of RNA-binding proteins, causing their loss of function and disrupting regulated pre-mRNA processing. We used a DM1 heart mouse model that inducibly expresses CUGexp RNA to …

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jci.org broke the news in on Tuesday, April 1, 2025.
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