A positively selected microRNA controls a reversible aging program in striated muscle.

Authors

Melissa A Boldridge, Lei Xu, Xiaoyin Wang, Michael Stirm, Gracia Bonilla, Chi Zhu, Justin Y Lee, Rachelle L Stark, Sneha Damal Villivalam, Marianne Bengtson Løvendorf, Andreas Petri, Alexandre Wagschal, Caslin Gilroy, Federico Gonzalez, Lei Cai, Peter I Hecker, Mogens Vyberg, Rahul Almeida, Chaitanya Punnati, Christopher Jin, Theresia M Schnurr, Dominique O Riddell, John C W Hildyard, Bachuki Shashikadze, Andreas Lange, Nikolai Klymiuk, Thomas Fröhlich, Sakari Kauppinen, Richard J Piercy, Joshua W Knowles, Alexander Fay, Sona Kang, Ryan E Temel, Ruslan I Sadreyev, Eckhard Wolf, Matthew L Springer, Anders M Näär

Published in

bioRxiv : the preprint server for biology. Sep 07, 2026. Epub Sep 07, 2026.

Abstract

Aging is the primary risk factor for most chronic diseases and is characterized in striated muscle by progressive functional decline, mitochondrial dysfunction, and chronic inflammation. The miR-128-1 locus resides within a positively selected haplotype on chromosome 2q21.3 associated with variation in grip strength, pulmonary function, and cardiometabolic traits in humans. Here, we show that antisense oligonucleotide-mediated inhibition of miR-128-3p restores muscle mass and function in aged mice, improves cardiac function while limiting adverse remodeling following myocardial infarction, and ameliorates skeletal and cardiac muscle pathology in mouse and pig models of Duchenne muscular dystrophy. Across these contexts, miR-128-3p inhibition induces a conserved transcriptional response characterized by activation of mitochondrial programs and suppression of inflammatory and fibrotic signaling, resembling the effects of established longevity interventions. These findings identify miR-128-3p as a regulator of a conserved aging-associated program and establish its inhibition as a strategy to restore tissue function across aging-related muscle pathologies.
miR-128 loci associate with reduced grip strength; miR-128-1 also with lung function.miR-128-3p drives mitochondrial dysfunction and inflammation in striated muscle.Anti-miR-128 ASO rescues function in aged, infarcted, and dystrophic muscle.Inhibition recapitulates transcriptional effects of longevity interventions.

PMID:
42818681
Bibliographic data and abstract were imported from PubMed on 01 Oct 2026.

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