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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Zhang, Hong Podojil, Joseph R. Miller, Stephen D. Luo, Xunrong |
| Description | Country affiliation: United States Author Affiliation: Zhang H ( Department of Microbiology-Immunology and the Interdepartmental Immunobiology Center, Northwestern University, Chicago, IL 60611, USA.) |
| Abstract | Multiple sclerosis is characterized by perivascular CNS infiltration of myelin-specific CD4(+) T cells and activated mononuclear cells. TCR transgenic mice on the SJL background specific for proteolipid protein (PLP)(139-151) develop a high incidence of spontaneous experimental autoimmune encephalomyelitis (sEAE). We examined the intrinsic mechanisms regulating onset and severity of sEAE. CD4(+) T cells isolated from the cervical lymph nodes, but not spleens, of diseased 5B6 transgenic mice are hyperactivated when compared with age-matched healthy mice and produce both IFN-gamma and IL-17, indicating that the cervical lymph node is the initial peripheral activation site. The age-associated development of sEAE correlates with a decline in both the functional capacity of natural regulatory T cells (nTregs) and in PLP(139-151)-induced IL-10 production and a concomitant increase in IL-17 production. Anti-CD25-induced inactivation of nTregs increased the incidence and severity of sEAE. Conversely, induction of peripheral tolerance via the i.v. injection of PLP(139-151)-pulsed, ethylcarbodiimide-fixed APCs (PLP(139-151)-SP) inhibited the development of clinical disease concomitant with increased production of IL-10 and conversion of Foxp3(+) Tregs from CD4(+)CD25(-) progenitors. These data indicate that heterogeneous populations of Tregs regulate onset of sEAE, and that induction of peripheral tolerance can be exploited to prevent/treat spontaneous autoimmune disease. |
| ISSN | 00221767 |
| e-ISSN | 15506606 |
| Journal | The Journal of Immunology |
| Issue Number | 7 |
| Volume Number | 181 |
| Language | English |
| Publisher | The American Association of Immunologists |
| Publisher Date | 2008-10-01 |
| Publisher Place | United States |
| Access Restriction | Open |
| Subject Keyword | Aging Immunology Encephalomyelitis, Autoimmune, Experimental Physiopathology Genetics Amino Acid Sequence Animals Cells, Cultured Crosses, Genetic Prevention & Control Genetic Predisposition To Disease Immune Tolerance Mice Mice, Inbred C57bl Mice, Inbred Strains Mice, Transgenic Molecular Sequence Data Myelin Proteolipid Protein Administration & Dosage Peptide Fragments Severity Of Illness Index Time Factors 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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