fhl2b mediates extraocular muscle protection in zebrafish models of muscular dystrophies and its ectopic expression ameliorates affected body musclesShow others and affiliations
2024 (English)In: Nature Communications, E-ISSN 2041-1723, Vol. 15, no 1, article id 1950Article in journal (Refereed) Published
Abstract [en]
In muscular dystrophies, muscle fibers loose integrity and die, causing significant suffering and premature death. Strikingly, the extraocular muscles (EOMs) are spared, functioning well despite the disease progression. Although EOMs have been shown to differ from body musculature, the mechanisms underlying this inherent resistance to muscle dystrophies remain unknown. Here, we demonstrate important differences in gene expression as a response to muscle dystrophies between the EOMs and trunk muscles in zebrafish via transcriptomic profiling. We show that the LIM-protein Fhl2 is increased in response to the knockout of desmin, plectin and obscurin, cytoskeletal proteins whose knockout causes different muscle dystrophies, and contributes to disease protection of the EOMs. Moreover, we show that ectopic expression of fhl2b can partially rescue the muscle phenotype in the zebrafish Duchenne muscular dystrophy model sapje, significantly improving their survival. Therefore, Fhl2 is a protective agent and a candidate target gene for therapy of muscular dystrophies.
Place, publisher, year, edition, pages
Springer Nature , 2024. Vol. 15, no 1, article id 1950
National Category
Cell and Molecular Biology
Identifiers
URN: urn:nbn:se:umu:diva-222359DOI: 10.1038/s41467-024-46187-xPubMedID: 38431640Scopus ID: 2-s2.0-85186557555OAI: oai:DiVA.org:umu-222359DiVA, id: diva2:1844843
2024-03-152024-03-152024-03-15Bibliographically approved