Among the scarce available data about the biological role of the membrane protein CD20, there is some evidence that this protein functions as a store-operated Ca(2+) channel and/or regulates transmembrane Ca(2+) trafficking. Recent findings indicate that store-operated Ca(2+) entry (SOCE) plays a central role in skeletal muscle function and development, but there remain a number of unresolved issues relating to SOCE modulation in this tissue. Here we describe CD20 expression in skeletal muscle, verifying its membrane localization in myoblasts and adult muscle fibers. Additionally, we show that inhibition of CD20 through antibody binding or gene silencing resulted in specific impairment of SOCE in C2C12 myoblasts. Our results provide novel insights into the CD20 expression pattern, and suggest that functional CD20 is required for SOCE to consistently occur in C2C12 myoblasts. These findings may contribute to future identification of mechanisms and molecules involved in the fine regulation of store-operated Ca(2+) entry in skeletal muscle.

Expression of CD20 reveals a new store-operated calcium entry modulator in skeletal muscle / D. Parolini, L.M. Cassinelli, P. Razini, C. Sitzia, M.N. Tonna, S. Erratico, F. Colleoni, V. Angeloni, E. Maffioli, A. Farini, S. Maciotta, L. Porretti, M.L.C. Belicchi, F. Bianco, G. Tedeschi, M.A. Meregalli, Y. Torrente. - In: THE INTERNATIONAL JOURNAL OF BIOCHEMISTRY & CELL BIOLOGY. - ISSN 1357-2725. - 44:12(2012 Dec), pp. 2095-2105.

Expression of CD20 reveals a new store-operated calcium entry modulator in skeletal muscle

D. Parolini
Primo
;
L.M. Cassinelli
Secondo
;
P. Razini;M.N. Tonna;S. Erratico;F. Colleoni;V. Angeloni;E. Maffioli;A. Farini;S. Maciotta;M.L.C. Belicchi;F. Bianco;G. Tedeschi;M.A. Meregalli
Penultimo
;
Y. Torrente
Ultimo
2012

Abstract

Among the scarce available data about the biological role of the membrane protein CD20, there is some evidence that this protein functions as a store-operated Ca(2+) channel and/or regulates transmembrane Ca(2+) trafficking. Recent findings indicate that store-operated Ca(2+) entry (SOCE) plays a central role in skeletal muscle function and development, but there remain a number of unresolved issues relating to SOCE modulation in this tissue. Here we describe CD20 expression in skeletal muscle, verifying its membrane localization in myoblasts and adult muscle fibers. Additionally, we show that inhibition of CD20 through antibody binding or gene silencing resulted in specific impairment of SOCE in C2C12 myoblasts. Our results provide novel insights into the CD20 expression pattern, and suggest that functional CD20 is required for SOCE to consistently occur in C2C12 myoblasts. These findings may contribute to future identification of mechanisms and molecules involved in the fine regulation of store-operated Ca(2+) entry in skeletal muscle.
gene expression; amino acid sequence; animals; antibodies; antigens, CD20; calcium signaling; cell line; cell membrane; cell proliferation; cell survival; gene knockdown techniques; humans; mice; mice, inbred C57BL; mice, SCID; molecular sequence data; muscle fibers, skeletal; muscle, skeletal; myoblasts; RNA interference
Settore MED/26 - Neurologia
Settore BIO/10 - Biochimica
dic-2012
Article (author)
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2434/210010
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