Your browser doesn't support javascript.
loading
Osteopontin is upregulated during in vivo demyelination and remyelination and enhances myelin formation in vitro.
Selvaraju, Raghuram; Bernasconi, Lilia; Losberger, Christophe; Graber, Pierre; Kadi, Linda; Avellana-Adalid, Virginia; Picard-Riera, Nathalie; Baron Van Evercooren, Anne; Cirillo, Rocco; Kosco-Vilbois, Marie; Feger, Georg; Papoian, Ruben; Boschert, Ursula.
Afiliación
  • Selvaraju R; Department of Immunology, Serono Pharmaceutical Research Institute, Ares-Serono International SA, Geneva, Switzerland.
Mol Cell Neurosci ; 25(4): 707-21, 2004 Apr.
Article en En | MEDLINE | ID: mdl-15080898
We have used in vitro oligodendrocyte differentiation and the in vivo remyelination model, the cuprizone model, to identify genes regulating oligodendrocyte function and remyelination. One of the genes we identified, osteopontin (opn), is a secreted glycoprotein with cytokine-like, chemotactic, and anti-apoptotic properties that contains an Arg-Gly-Asp (RGD) cell adhesion motif-mediating interactions with several integrins. Both microglia and astrocytes in demyelinating brain regions of cuprizone-fed mice expressed OPN protein. Recombinant OPN protein produced in a baculovirus expression system induced proliferation of both the rat CG-4 and the mouse Oli-neu oligodendrocyte precursor (OLP)-like cell lines in a dose-dependent manner. In addition, recombinant OPN treatment stimulated both myelin basic protein (MBP) synthesis and myelin sheath formation in mixed cortical cultures from embryonic mouse brain, an in vitro primary culture model of myelination. Interestingly, myelinating mixed cultures prepared from OPN(-/-) mice contained significantly less MBP compared to wild-type cultures after 17 days in culture. We propose that in the central nervous system, OPN may act as a novel regulator of myelination and remyelination.
Asunto(s)
Buscar en Google
Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Sialoglicoproteínas / Encéfalo / Regulación hacia Arriba / Enfermedades Desmielinizantes / Vaina de Mielina / Regeneración Nerviosa Idioma: En Revista: Mol Cell Neurosci Asunto de la revista: BIOLOGIA MOLECULAR / NEUROLOGIA Año: 2004 Tipo del documento: Article País de afiliación: Suiza Pais de publicación: Estados Unidos
Buscar en Google
Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Sialoglicoproteínas / Encéfalo / Regulación hacia Arriba / Enfermedades Desmielinizantes / Vaina de Mielina / Regeneración Nerviosa Idioma: En Revista: Mol Cell Neurosci Asunto de la revista: BIOLOGIA MOLECULAR / NEUROLOGIA Año: 2004 Tipo del documento: Article País de afiliación: Suiza Pais de publicación: Estados Unidos