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Cavin4 Interacts with Bin1 to Promote T-tubule Formation and Stability in Developing Skeletal Muscle

Abstract

The cavin proteins are essential for caveola biogenesis and function. Here, we identify a role for the muscle-specific component, Cavin4, in skeletal muscle T-tubule development by analyzing two vertebrate systems, mouse and zebrafish. In both models, Cavin4 localized to T-tubules, and loss of Cavin4 resulted in aberrant T-tubule maturation. In zebrafish, which possess duplicated cavin4 paralogs, Cavin4b was shown to directly interact with the T-tubule-associated BAR domain protein Bin1. Loss of both Cavin4a and Cavin4b caused aberrant accumulation of interconnected caveolae within the T-tubules, a fragmented T-tubule network enriched in Caveolin-3, and an impaired Ca2+ response upon mechanical stimulation. We propose a role for Cavin4 in remodeling the T-tubule membrane early in development by recycling caveolar components from the T-tubule to the sarcolemma. This generates a stable T-tubule domain lacking caveolae that is essential for T-tubule function.

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References
1.
Way M, Parton R . M-caveolin, a muscle-specific caveolin-related protein. FEBS Lett. 1995; 376(1-2):108-12. DOI: 10.1016/0014-5793(95)01256-7. View

2.
Rae J, Ferguson C, Ariotti N, Webb R, Cheng H, Mead J . A robust method for particulate detection of a genetic tag for 3D electron microscopy. Elife. 2021; 10. PMC: 8104959. DOI: 10.7554/eLife.64630. View

3.
Nixon S, Wegner J, Ferguson C, Mery P, Hancock J, Currie P . Zebrafish as a model for caveolin-associated muscle disease; caveolin-3 is required for myofibril organization and muscle cell patterning. Hum Mol Genet. 2005; 14(13):1727-43. DOI: 10.1093/hmg/ddi179. View

4.
Richter T, Floetenmeyer M, Ferguson C, Galea J, Goh J, Lindsay M . High-resolution 3D quantitative analysis of caveolar ultrastructure and caveola-cytoskeleton interactions. Traffic. 2008; 9(6):893-909. DOI: 10.1111/j.1600-0854.2008.00733.x. View

5.
Rodriguez G, Ueyama T, Ogata T, Czernuszewicz G, Tan Y, Dorn 2nd G . Molecular genetic and functional characterization implicate muscle-restricted coiled-coil gene (MURC) as a causal gene for familial dilated cardiomyopathy. Circ Cardiovasc Genet. 2011; 4(4):349-58. PMC: 3157556. DOI: 10.1161/CIRCGENETICS.111.959866. View