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Autoantigen-specific memory CD4 + T cells are prevalent early in progression to Type 1 diabetes

机译:自身抗原特异性记忆CD4 + T细胞在发展为1型糖尿病的早期很普遍

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Autoreactive CD4 + T cells contribute to the destruction of insulin producing beta cells in Type 1 diabetes (T1D). Using MHC class II tetramers, we have analyzed the frequency of GAD65- (274-286; 555-567) and insulin- (A1-15; A6-21) specific CD4 + T cells in 31 children with T1D, 65 multiple autoantibody-positive children and 93 HLA- and age-matched controls. In a smaller group of children T-cell responses of memory origin to the same autoantigens were investigated. We observed a higher response to GAD65 555-567 in the autoantibody-positive children than in the controls (P=0.017). Memory T-cell responses to GAD65 555-567 were more frequent among T1D patients (P=0.025) and autoantibody-positive (P=0.054), while all controls were negative (n=28). In summary, the presence of antigen experienced GAD65-specific T cells in the subjects with diabetes-associated autoimmunity is encouraging for further directions in the prediction of T1D.
机译:自身反应性CD4 + T细胞有助于破坏1型糖尿病(T1D)中产生胰岛素的β细胞。使用MHC II类四聚体,我们分析了31例T1D儿童,65种多自身抗体-中GAD65-(274-286; 555-567)和胰岛素-(A1-15; A6-21)特异性CD4 + T细胞的频率。阳性儿童以及93位HLA和年龄匹配的对照。在较小的一组儿童中,研究了记忆起源的T细胞对相同自身抗原的反应。我们在自身抗体阳性的儿童中观察到对GAD65 555-567的反应比对照组更高(P = 0.017)。在T1D患者(P = 0.025)和自身抗体阳性(P = 0.054)中,对GAD65 555-567的记忆性T细胞反应更为频繁,而所有对照均为阴性(n = 28)。总而言之,患有糖尿病相关自身免疫的受试者中存在抗原经历的GAD65特异性T细胞正在为T1D的预测提供进一步的指导。

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