ArticlePLoS genetics2024
Human disease-causing mutations result in loss of leiomodin 2 through nonsense-mediated mRNA decay.
Article in PLoS genetics, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
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Who cites it
6 citing papers in PubMed.
- Leiomodin 2 is a processive pointed-end elongator of actin filaments.Nature communications · 2026Article
- Leiomodin 2 functions as a processive pointed-end elongator of actin filaments.bioRxiv : the preprint server for biology · 2026Article
- Novel leiomodin 2b crispant zebrafish as a model for dilated cardiomyopathy.microPublication biology · 2026Article
- Nonsense-Mediated mRNA Decay in Human Health and Diseases: Current Understanding, Regulatory Mechanisms and Future Perspectives.Molecular biotechnology · 2025Review
- Interaction of cardiac leiomodin with the native cardiac thin filament.PLoS biology · 2025Article
- Leiomodin 2 neonatal dilated cardiomyopathy mutation results in altered actin gene signatures and cardiomyocyte dysfunction.NPJ Regenerative medicine · 2024Article
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Authors and funding
5 authors.
Funding
Abstract
The leiomodin (Lmod) family of actin-binding proteins play a critical role in muscle function, highlighted by the fact that mutations in all three family members (LMOD1-3) result in human myopathies. Mutations in the cardiac predominant isoform, LMOD2 lead to severe neonatal dilated cardiomyopathy. Most of the disease-causing mutations in the LMOD gene family are nonsense, or frameshift, mutations predicted to result in expression of truncated proteins. However, in nearly all cases of disease, little to no LMOD protein is expressed. We show here that nonsense-mediated mRNA decay, a cellular mechanism which eliminates mRNAs with premature termination codons, underlies loss of mutant protein from two independent LMOD2 disease-causing mutations. Furthermore, we generated steric-blocking oligonucleotides that obstruct deposition of the exon junction complex, preventing nonsense-mediated mRNA decay of mutant LMOD2 transcripts, thereby restoring mutant protein expression. Our investigation lays the initial groundwork for potential therapeutic intervention in LMOD-linked myopathies.
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