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Multiple Sclerosis CD49d + CD154 + As Myelin-Specific Lymphocytes Induced During Remyelination.
- Source :
-
Cells [Cells] 2019 Dec 19; Vol. 9 (1). Date of Electronic Publication: 2019 Dec 19. - Publication Year :
- 2019
-
Abstract
- Multiple sclerosis (MS) is a demyelinating autoimmune disease of the central nervous system (CNS) mediated by autoreactive lymphocytes. The role of autoreactive lymphocytes in the CNS demyelination is well described, whereas very little is known about their role in remyelination during MS remission. In this study, we identified a new subpopulation of myelin-specific CD49d <superscript>+</superscript> CD154 <superscript>+</superscript> lymphocytes presented in the peripheral blood of MS patients during remission, that proliferated in vitro in response to myelin peptides. These lymphocytes possessed the unique ability to migrate towards maturing oligodendrocyte precursor cells (OPCs) and synthetize proinflammatory chemokines/cytokines. The co-culture of maturing OPCs with myelin-specific CD49d <superscript>+</superscript> CD154 <superscript>+</superscript> lymphocytes was characterized by the increase in proinflammatory chemokine/cytokine secretion that was not only a result of their cumulative effect of what OPCs and CD49d <superscript>+</superscript> CD154 <superscript>+</superscript> lymphocytes produced alone. Moreover, maturing OPCs exposed to exogenous myelin peptides managed to induce CD40-CD154-dependent CD49d <superscript>+</superscript> CD154 <superscript>+</superscript> lymphocyte proliferation. We confirmed, in vivo, the presence of CD49d <superscript>+</superscript> CD154 <superscript>+</superscript> cells close to maturating OPCs and remyelinating plaque during disease remission in the MS mouse model (C57Bl/6 mice immunized with MOG <subscript>3</subscript> <subscript>5</subscript> <subscript>-</subscript> <subscript>55</subscript> ) by immunohistochemistry. Three weeks after an acute phase of experimental autoimmune encephalomyelitis, CD49d <superscript>+</superscript> /CD154 <superscript>+</superscript> cells were found to be co-localized with O4 <superscript>+</superscript> cells (oligodendrocyte progenitors) in the areas of remyelination identified by myelin basic protein (MBP) labelling. These data suggested that myelin-specific CD49d <superscript>+</superscript> CD154 <superscript>+</superscript> lymphocytes present in the brain can interfere with remyelination mediated by oligodendrocytes probably as a result of establishing proinflammatory environment.<br />Competing Interests: The authors declare no conflict of interest.
- Subjects :
- Adult
Animals
Case-Control Studies
Cell Proliferation
Cells, Cultured
Coculture Techniques
Cytokines metabolism
Disease Models, Animal
Female
Humans
Lymphocytes cytology
Lymphocytes immunology
Male
Mice
Mice, Inbred C57BL
Myelin-Oligodendrocyte Glycoprotein adverse effects
Oligodendrocyte Precursor Cells cytology
Oligodendrocyte Precursor Cells immunology
Peptide Fragments adverse effects
Remyelination
CD40 Ligand metabolism
Encephalomyelitis, Autoimmune, Experimental immunology
Integrin alpha4 metabolism
Multiple Sclerosis immunology
Myelin Sheath metabolism
Subjects
Details
- Language :
- English
- ISSN :
- 2073-4409
- Volume :
- 9
- Issue :
- 1
- Database :
- MEDLINE
- Journal :
- Cells
- Publication Type :
- Academic Journal
- Accession number :
- 31861635
- Full Text :
- https://doi.org/10.3390/cells9010015