Th17 helper cell and T-cell immunoglobulin and mucin domain 3 involvement in Guillain-Barré syndrome.
Immunopharmacol Immunotoxicol
; 34(6): 1039-46, 2012 Dec.
Article
em En
| MEDLINE
| ID: mdl-22738814
ABSTRACT
OBJECTIVE AND DESIGN:
We investigated the involvement of Th17 cells and T-cell immunoglobulin and mucin domain 3 (TIM-3) in Guillain-Barré syndrome (GBS) in comparison to healthy subjects. MATERIALS ANDSUBJECTS:
Peripheral blood samples were obtained from 29 healthy subjects and 29 GBS patients. TREATMENT Peripheral blood mononuclear cells (PBMCs) and CD4(+) T cells were stimulated with anti-CD3 and anti-CD28 mAbs, in the absence or presence of anti-TIM-3 mAb.METHODS:
mRNA levels of TIM-3 and the transcription factor retinoic acid-related orphan receptor γt (RORγt) were determined by RT-PCR and were expressed relative to ß-actin mRNA (housekeeping gene). Serum IFN-γ and IL-17 levels were determined by ELISA.RESULTS:
Compared to controls, relative TIM-3 mRNA levels were lower in both stimulated and unstimulated PBMCs from GBS patients. Unstimulated GBS CD4(+) T cells and GBS CD4+ T cells stimulated with anti-CD3 and CD28 mAbs had higher relative RORγt mRNA expression compared to controls. GBS CD4(+) T cells secreted significantly more IFN-γ and IL-17 in the presence of anti-TIM-3 mAb. GBS patients had (1) higher numbers of Th17, but not Th1 or Th2 cells in peripheral blood and (2) higher serum concentrations of IFN-γ and IL-17 compared to controls.CONCLUSION:
TIM-3 may inhibit Th17 cell activation, thereby modulating their cytokine secretion patterns. Th17 cell differentiation, IL-17 levels, and TIM-3 regulation may be involved in the pathogenesis of GBS.
Texto completo:
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Base de dados:
MEDLINE
Assunto principal:
Ativação Linfocitária
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Diferenciação Celular
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Síndrome de Guillain-Barré
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Células Th17
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Proteínas de Membrana
Limite:
Adult
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Female
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Humans
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Male
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Middle aged
Idioma:
En
Ano de publicação:
2012
Tipo de documento:
Article