Expression of CD20 reveals a new store-operated calcium entry modulator in skeletal muscle.
Int J Biochem Cell Biol
; 44(12): 2095-105, 2012 Dec.
Article
en En
| MEDLINE
| ID: mdl-22982241
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.
Texto completo:
1
Banco de datos:
MEDLINE
Asunto principal:
Expresión Génica
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Fibras Musculares Esqueléticas
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Antígenos CD20
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Señalización del Calcio
Tipo de estudio:
Prognostic_studies
Límite:
Animals
/
Humans
Idioma:
En
Revista:
Int J Biochem Cell Biol
Asunto de la revista:
BIOQUIMICA
Año:
2012
Tipo del documento:
Article
País de afiliación:
Italia