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Adult-onset type 1 diabetes patients display decreased IGRP-specific Tr1 cells in blood

机译:成人1型糖尿病患者血液中IGRP特异性Tr1细胞减少

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摘要

The breakdown of immune tolerance against islet antigens causes type 1 diabetes (T1D). The antigens associated with adult-onset T1D (AT1D) remain largely undefined. It is possible that AT1D patients display a unique type of CD4(+) T cells specific for a certain islet antigen. Here we analyzed the cytokine production profiles of CD4(+) helper T (Th) cells that are specific for three islet antigens; GAD65, preproinsulin, and IGRP in patients with AT1D, juvenile-onset T1D (JT1D), and age-, gender- and human leukocyte antigen (HLA)-matched control adults. While IGRP-specific Th cells in AT1D patients were dominantly Th1 cells, IGRP-specific Th cells in control adults and JT1D patients were dominantly Th2 and T regulatory type 1 (Tr1) cells. Notably, the frequency of IGRP-specific Tr1 cells was significantly lower in AT1D patients than in control adults and JT1D patients. In conclusion, our study suggests that IGRP-specific Th cells play a unique pathogenic role in AT1D. (C) 2015 Elsevier Inc. All rights reserved.
机译:对胰岛抗原的免疫耐受性下降会导致1型糖尿病(T1D)。与成年发作的T1D(AT1D)相关的抗原在很大程度上仍然不确定。 AT1D患者有可能表现出特定类型的特定胰岛抗原的CD4(+)T细胞的独特类型。在这里,我们分析了对三种胰岛抗原特异的CD4(+)辅助性T(Th)细胞的细胞因子生产概况;患有AT1D,青少年T1D(JT1D)以及年龄,性别和人类白细胞抗原(HLA)匹配的对照成人患者的GAD65,胰岛素原和IGRP。 AT1D患者的IGRP特异性Th细胞占主导地位的Th1细胞,而对照组和JT1D患者的IGRP特异性Th细胞占优势,Th2和T调节型1(Tr1)细胞。值得注意的是,AT1D患者中IGRP特异性Tr1细胞的频率显着低于对照组成年人和JT1D患者。总之,我们的研究表明IGRP特异性Th细胞在AT1D中起独特的致病作用。 (C)2015 Elsevier Inc.保留所有权利。

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