Elena Nikonova, Jenna DeCata, Marc Canela, Christiane Barz, Alexandra Esser, Jessica Bouterwek, Akanksha Roy, Heidemarie Gensler, Martin Heß, Tobias Straub, Ignasi Forne, Maria L Spletter
Muscles undergo developmental transitions in gene expression and alternative splicing that are necessary to refine sarcomere structure and contractility. CUG-BP and ETR-3-like (CELF) family RNA-binding proteins are important regulators of RNA processing during myogenesis that are misregulated in diseases such as Myotonic Dystrophy Type I (DM1). Here, we report a conserved function for Bruno 1 (Bru1, Arrest), a CELF1/2 family homolog in Drosophila, during early muscle myogenesis. Loss of Bru1 in flight muscles results in disorganization of the actin cytoskeleton leading to aberrant myofiber compaction and defects in pre-myofibril formation...
April 29, 2024: PLoS Biology