Effect of targeted disruption of STAT4 and STAT6 on the induction of experimental autoimmune encephalomyelitis
| Autor: | T, Chitnis, N, Najafian, C, Benou, A D, Salama, M J, Grusby, M H, Sayegh, S J, Khoury |
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| Rok vydání: | 2001 |
| Předmět: |
Central Nervous System
Mice Knockout Encephalomyelitis Autoimmune Experimental Receptors Antigen T-Cell alpha-beta T-Lymphocytes STAT4 Transcription Factor Th1 Cells Adoptive Transfer Article DNA-Binding Proteins Mice Inbred C57BL Mice Myelin-Associated Glycoprotein Th2 Cells immune system diseases Immunoglobulin G Gene Targeting Trans-Activators Animals Cytokines Myelin-Oligodendrocyte Glycoprotein STAT6 Transcription Factor Cells Cultured Myelin Proteins Spleen |
| Zdroj: | The Journal of clinical investigation. 108(5) |
| ISSN: | 0021-9738 |
| Popis: | Experimental autoimmune encephalomyelitis (EAE) is mediated by myelin-specific CD4(+) T cells secreting Th1 cytokines, while recovery from disease is associated with expression of Th2 cytokines. Investigations into the role of individual cytokines in disease induction have yielded contradictory results. Here we used animals with targeted deletion of the STAT4 or STAT6 genes to determine the role of these signaling molecules in EAE. The STAT4 pathway controls the differentiation of cells into a Th1 phenotype, while the STAT6 pathway controls the differentiation of cells into a Th2 phenotype. We found that mice deficient in STAT4 are resistant to the induction of EAE, with minimal inflammatory infiltrates in the central nervous system. In contrast, STAT6-deficient mice, which have a predominantly Th1 phenotype, experience a more severe clinical course of EAE as compared with wild-type or STAT4 knockout mice. In addition, adoptive transfer studies confirm the regulatory functions of a Th2 environment in vivo. These novel data indicate that STAT4 and STAT6 genes play a critical role in regulating the autoimmune response in EAE. |
| Databáze: | OpenAIRE |
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