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Fontelonga T, Hall AJ, Brown JL, Jung YL, Alexander MS, Dominov JA, Mouly V, Vieira N, Zatz M, Vainzof M, Gussoni E. Tetraspanin CD82 Associates with Trafficking Vesicle in Muscle Cells and Binds to Dysferlin and Myoferlin. Adv Biol (Weinh) 2023; 7:e2300157. [PMID: 37434585 PMCID: PMC10784410 DOI: 10.1002/adbi.202300157] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2023] [Revised: 06/26/2023] [Indexed: 07/13/2023]
Abstract
Tetraspanins organize protein complexes at the cell membrane and are responsible for assembling diverse binding partners in changing cellular states. Tetraspanin CD82 is a useful cell surface marker for prospective isolation of human myogenic progenitors and its expression is decreased in Duchenne muscular dystrophy (DMD) cell lines. The function of CD82 in skeletal muscle remains elusive, partly because the binding partners of this tetraspanin in muscle cells have not been identified. CD82-associated proteins are sought to be identified in human myotubes via mass spectrometry proteomics, which identifies dysferlin and myoferlin as CD82-binding partners. In human dysferlinopathy (Limb girdle muscular dystrophy R2, LGMDR2) myogenic cell lines, expression of CD82 protein is near absent in two of four patient samples. In the cell lines where CD82 protein levels are unaffected, increased expression of the ≈72 kDa mini-dysferlin product is identified using an antibody recognizing the dysferlin C-terminus. These data demonstrate that CD82 binds dysferlin/myoferlin in differentiating muscle cells and its expression can be affected by loss of dysferlin in human myogenic cells.
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Affiliation(s)
| | - Arielle J. Hall
- Division of Genetics and Genomics, Boston Children’s Hospital, MA, USA
| | - Jaedon L. Brown
- Division of Genetics and Genomics, Boston Children’s Hospital, MA, USA
| | - Youngsook L. Jung
- Division of Genetics and Genomics, Boston Children’s Hospital, MA, USA
| | - Matthew S. Alexander
- Department of Pediatrics, Division of Neurology at Children’s of Alabama, University of Alabama at Birmingham, Birmingham, AL, USA
- Department of Genetics, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Janice A. Dominov
- Department of Neurology, University of Massachusetts Worcester, MA, USA
| | | | | | - Mayana Zatz
- Human Genome and Stem Cells Research Center, Biosciences Institute, University of São Paulo, São Paulo, BR
| | - Mariz Vainzof
- Human Genome and Stem Cells Research Center, Biosciences Institute, University of São Paulo, São Paulo, BR
| | - Emanuela Gussoni
- Division of Genetics and Genomics, Boston Children’s Hospital, MA, USA
- The Stem Cell Program, Boston Children’s Hospital, Boston, MA, USA
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