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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Mendoza, Jason P. Karandikar, Nitin J. Kashi, Venkatesh P. Ortega, Sterling B. Tyler, Andrew F. Cunnusamy, Khrishen |
| Description | Country affiliation: United States Author Affiliation: Ortega SB ( Department of Pathology, University of Texas Southwestern Medical Center, Dallas TX 75390, USA.) |
| Abstract | Multiple sclerosis (MS) is an immune-mediated demyelinating disease of the CNS, and CD8 T cells are the predominant T cell population in MS lesions. Given that transfer of CNS-specific CD8 T cells results in an attenuated clinical demyelinating disease in C57BL/6 mice with immunization-induced experimental autoimmune encephalomyelitis (EAE), we investigated the cellular targets and mechanisms of autoreactive regulatory CD8 T cells. In this study we report that myelin oligodendrocyte glycoprotein peptide (MOG35-55)-induced CD8 T cells could also attenuate adoptively transferred, CD4 T cell-mediated EAE. Whereas CD8(-/-) mice exhibited more severe EAE associated with increased autoreactivity and inflammatory cytokine production by myelin-specific CD4 T cells, this was reversed by adoptive transfer of MOG-specific CD8 T cells. These autoregulatory CD8 T cells required in vivo MHC class Ia (K(b)D(b)) presentation. Interestingly, MOG-specific CD8 T cells could also suppress adoptively induced disease using wild-type MOG35-55-specific CD4 T cells transferred into K(b)D(b-/-) recipient mice, suggesting direct targeting of encephalitogenic CD4 T cells. In vivo trafficking analysis revealed that autoregulatory CD8 T cells are dependent on neuroinflammation for CNS infiltration, and their suppression/cytotoxicity of MOG-specific CD4 T cells is observed both in the periphery and in the CNS. These studies provide important insights into the mechanism of disease suppression mediated by autoreactive CD8 T cells in EAE. |
| ISSN | 00221767 |
| e-ISSN | 15506606 |
| DOI | 10.4049/jimmunol.1300452 |
| Journal | The Journal of Immunology |
| Issue Number | 1 |
| Volume Number | 191 |
| Language | English |
| Publisher | The American Association of Immunologists |
| Publisher Date | 2013-07-01 |
| Publisher Place | United States |
| Access Restriction | Open |
| Subject Keyword | Cd4-positive T-lymphocytes Immunology Pathology Cd8-positive T-lymphocytes Encephalomyelitis, Autoimmune, Experimental Prevention & Control Adoptive Transfer Amino Acid Sequence Animals Autoimmune Diseases Transplantation Cells, Cultured Cytotoxicity, Immunologic Mice Mice, Inbred C57bl Mice, Knockout Molecular Sequence Data Research Support, N.i.h., Extramural Research Support, Non-u.s. Gov't Discipline Immunology |
| Content Type | Text |
| Resource Type | Article |
| Subject | Immunology and Allergy Immunology |
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