ArticleAmerican journal of human genetics2026
Enhanced muscle uptake of chemically optimized miR-23b antisense oligonucleotides as lead compounds for myotonic dystrophy type 1.
Article in American journal of human genetics, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
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Who cites it
3 citing papers in PubMed.
- Fatty-acid-based antimiR-23b delivery in the DMSXL model: A potential therapeutic strategy for brain dysfunction in myotonic dystrophy type 1.Cell reports. Medicine · 2026Article
- Review
- Current biomarker development in myotonic dystrophies.Journal of neurology · 2026Review
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Authors and funding
22 authors.
Funding
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Abstract
Myotonic dystrophy type 1 (DM1) is a multisystemic disorder caused by CTG repeat expansions in DM1 protein kinase (DMPK). Mutant transcripts containing expanded CUG repeats form ribonuclear foci that sequester muscleblind-like (MBNL) splicing regulator proteins, key regulators of RNA splicing and metabolism. This functional depletion leads to widespread mis-splicing and persistence of fetal transcript profiles, which underlie muscle weakness, myotonia, and muscle atrophy. In addition, miR-23b is upregulated in DM1 muscle and further represses MBNL1 translation, amplifying molecular defects. We developed chemically optimized microRNA (miRNA)-targeting antisense oligonucleotides (antimiRs) to inhibit miR-23b and restore functional MBNL1 levels. Using a multi-step screening process, we evaluated antimiRs with varying sequences, lengths, chemical modifications, and lipid conjugations. A key optimization was a 3'-oleic acid conjugation combined with specific chemical modifications, which enhanced muscle uptake and efficacy. Lead candidates showed strong activity in preclinical models (human skeletal actin [HSA]
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