4.6 Article

IL-17 Signaling-Independent Central Nervous System Autoimmunity Is Negatively Regulated by TGF-β

Journal

JOURNAL OF IMMUNOLOGY
Volume 182, Issue 5, Pages 2665-2671

Publisher

AMER ASSOC IMMUNOLOGISTS
DOI: 10.4049/jimmunol.0802221

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Funding

  1. NIAID NIH HHS [R01 AI063496-04, R01 AI063496, R01 AI063496-02, R01 AI063496-01A1, AI063496, R01 AI063496-03] Funding Source: Medline
  2. NIAMS NIH HHS [P30 AR047372, K01 AR048854, P30-AR47372, 1 K01 AR048854] Funding Source: Medline

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Recent studies have established an important role of Th17 in induction of autoimmune diseases. We have found that although IL-17 receptor A (IL-17RA)(-/-) mice were resistant to experimental autoimmune encephalomyelitis, a small number of them developed milder clinical signs of this autoimmune disease. In addition, blockade of TGF-beta in IL-17RA(-/-) mice resulted in much more severe clinical signs of experimental autoimmune encephalomyelitis and significantly increased parenchymal lymphocyte infiltration in the CNS. Furthermore, the number of autoreactive Th1 tells was greatly increased in the inflamed spinal cord of IL-17RA(-/-) mice. These data support a role of IL-17RA-independent mechanisms in causing autoimmunity and its regulation by TGF-beta. The Journal of Immunology, 2009, 182: 2665-2671.

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