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Caveolae Internalization Repairs Wounded Cells and Muscle Fibers

Overview
Journal Elife
Specialty Biology
Date 2013 Sep 21
PMID 24052812
Citations 90
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Abstract

Rapid repair of plasma membrane wounds is critical for cellular survival. Muscle fibers are particularly susceptible to injury, and defective sarcolemma resealing causes muscular dystrophy. Caveolae accumulate in dystrophic muscle fibers and caveolin and cavin mutations cause muscle pathology, but the underlying mechanism is unknown. Here we show that muscle fibers and other cell types repair membrane wounds by a mechanism involving Ca(2+)-triggered exocytosis of lysosomes, release of acid sphingomyelinase, and rapid lesion removal by caveolar endocytosis. Wounding or exposure to sphingomyelinase triggered endocytosis and intracellular accumulation of caveolar vesicles, which gradually merged into larger compartments. The pore-forming toxin SLO was directly visualized entering cells within caveolar vesicles, and depletion of caveolin inhibited plasma membrane resealing. Our findings directly link lesion removal by caveolar endocytosis to the maintenance of plasma membrane and muscle fiber integrity, providing a mechanistic explanation for the muscle pathology associated with mutations in caveolae proteins. DOI:http://dx.doi.org/10.7554/eLife.00926.001.

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References
1.
Bilderback T, Grigsby R, Dobrowsky R . Association of p75(NTR) with caveolin and localization of neurotrophin-induced sphingomyelin hydrolysis to caveolae. J Biol Chem. 1997; 272(16):10922-7. DOI: 10.1074/jbc.272.16.10922. View

2.
Schissel S, Jiang X, Jeong T, Camejo E, Najib J, Rapp J . Secretory sphingomyelinase, a product of the acid sphingomyelinase gene, can hydrolyze atherogenic lipoproteins at neutral pH. Implications for atherosclerotic lesion development. J Biol Chem. 1998; 273(5):2738-46. DOI: 10.1074/jbc.273.5.2738. View

3.
Fernandes M, Cortez M, Flannery A, Tam C, Mortara R, Andrews N . Trypanosoma cruzi subverts the sphingomyelinase-mediated plasma membrane repair pathway for cell invasion. J Exp Med. 2011; 208(5):909-21. PMC: 3092353. DOI: 10.1084/jem.20102518. View

4.
Le P, Nabi I . Distinct caveolae-mediated endocytic pathways target the Golgi apparatus and the endoplasmic reticulum. J Cell Sci. 2003; 116(Pt 6):1059-71. DOI: 10.1242/jcs.00327. View

5.
Parton R, Simons K . The multiple faces of caveolae. Nat Rev Mol Cell Biol. 2007; 8(3):185-94. DOI: 10.1038/nrm2122. View