HLA‐DR3介导的CD4 T细胞对1型糖尿病患者GAD65的应答
摘要 目的:我们进行这项研究以确定与1型糖尿病(T1D)中人类白细胞抗原(HLA)‐DR3/DQ2介导的谷氨酸脱羧酶(GAD65)特异性CD4 T细胞激活可能相关的致糖尿病性GAD65肽。 方法:选取与HLA‐DR3/DQ2分子在体外结合强烈的前30个GAD65肽, 分为4个池组。使用这些肽来刺激研究对象的CD4 T细胞, 在16小时PBMC培养中分析CD4 T细胞对干扰素(IFN‐γ), 白介素(IL)‐17, 肿瘤坏死因子‐α(TNF‐α)和IL‐10的激活表达, 使用流式细胞术进行分析。 结果:所有四个GAD65肽池(PP1‐4)都导致CD4 T细胞的IFN‐γ表达明显增加(p=0.00...
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Published in | Journal of diabetes Vol. 15; no. 7; pp. 607 - 621 |
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Main Authors | , , , , , , , |
Format | Journal Article |
Language | English |
Published |
Hoboken
John Wiley & Sons, Inc
01.07.2023
Wiley |
Subjects | |
Online Access | Get full text |
ISSN | 1753-0393 1753-0407 |
DOI | 10.1111/1753-0407.13406 |
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Abstract | 摘要 目的:我们进行这项研究以确定与1型糖尿病(T1D)中人类白细胞抗原(HLA)‐DR3/DQ2介导的谷氨酸脱羧酶(GAD65)特异性CD4 T细胞激活可能相关的致糖尿病性GAD65肽。 方法:选取与HLA‐DR3/DQ2分子在体外结合强烈的前30个GAD65肽, 分为4个池组。使用这些肽来刺激研究对象的CD4 T细胞, 在16小时PBMC培养中分析CD4 T细胞对干扰素(IFN‐γ), 白介素(IL)‐17, 肿瘤坏死因子‐α(TNF‐α)和IL‐10的激活表达, 使用流式细胞术进行分析。 结果:所有四个GAD65肽池(PP1‐4)都导致CD4 T细胞的IFN‐γ表达明显增加(p=0.003, p<0.0001, p=0.026 和 p=0.002, 分别), 只有池2在T1D患者与健康对照组之间显示出显著的IL‐17表达增加(p<0.0001)。肽间组间比较显示, 在患者中, PP2组与其他组相比, IFN‐γ和IL‐17的表达显著增加, IL‐10的表达显著降低(p<0.0001, p=0.02 和 p=0.04), 但在对照组中没有显示出明显差异。此外, 2号组肽对于HLA‐DRB1 * 03‐DQA1 * 05‐DQB1 * 02 + 患者而言, 导致CD4 T细胞的IFN‐γ和IL‐17表达显著增加(p=0.002), 而IL‐10表达显著降低(p=0.04)。在HLA‐DRB1 * 03‐DQA1 * 05‐DQB1 * 02 +的最近诊断的T1D患者中, CD4 T细胞的IL‐17表达显著增加(p=0.03)。 结论:GAD65肽, 尤其是属于PP2的肽段, 在T1D患者中能够诱导CD4 T细胞表达IFN‐γ和IL‐17细胞因子, 这表明在患者中2号组肽可能通过HLA‐DR3分子递呈给CD4 T细胞, 使免疫平衡朝向炎症表型转变。 |
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AbstractList | 摘要 目的:我们进行这项研究以确定与1型糖尿病(T1D)中人类白细胞抗原(HLA)‐DR3/DQ2介导的谷氨酸脱羧酶(GAD65)特异性CD4 T细胞激活可能相关的致糖尿病性GAD65肽。 方法:选取与HLA‐DR3/DQ2分子在体外结合强烈的前30个GAD65肽, 分为4个池组。使用这些肽来刺激研究对象的CD4 T细胞, 在16小时PBMC培养中分析CD4 T细胞对干扰素(IFN‐γ), 白介素(IL)‐17, 肿瘤坏死因子‐α(TNF‐α)和IL‐10的激活表达, 使用流式细胞术进行分析。 结果:所有四个GAD65肽池(PP1‐4)都导致CD4 T细胞的IFN‐γ表达明显增加(p=0.003, p<0.0001, p=0.026 和 p=0.002, 分别), 只有池2在T1D患者与健康对照组之间显示出显著的IL‐17表达增加(p<0.0001)。肽间组间比较显示, 在患者中, PP2组与其他组相比, IFN‐γ和IL‐17的表达显著增加, IL‐10的表达显著降低(p<0.0001, p=0.02 和 p=0.04), 但在对照组中没有显示出明显差异。此外, 2号组肽对于HLA‐DRB1 * 03‐DQA1 * 05‐DQB1 * 02 + 患者而言, 导致CD4 T细胞的IFN‐γ和IL‐17表达显著增加(p=0.002), 而IL‐10表达显著降低(p=0.04)。在HLA‐DRB1 * 03‐DQA1 * 05‐DQB1 * 02 +的最近诊断的T1D患者中, CD4 T细胞的IL‐17表达显著增加(p=0.03)。 结论:GAD65肽, 尤其是属于PP2的肽段, 在T1D患者中能够诱导CD4 T细胞表达IFN‐γ和IL‐17细胞因子, 这表明在患者中2号组肽可能通过HLA‐DR3分子递呈给CD4 T细胞, 使免疫平衡朝向炎症表型转变。 Abstract Aim We planned this study to identify diabetogenic glutamic acid decarboxylase (GAD65) peptides possibly responsible for human leucocyte antigen (HLA)‐DR3/DQ2‐mediated activation of GAD65‐specific CD4 T cells in type 1 diabetes (T1D). Methods Top 30 GAD65 peptides, found to strongly bind in silico with HLA‐DR3/DQ2 molecules, were selected and grouped into four pools. The peptides were used to stimulate CD4 T cells of study subjects in 16‐h peripheral blood mononuclear cell culture. CD4 T cells' stimulation in terms of interferon‐gamma (IFN‐γ), interleukin (IL)‐17, tumor necrosis factor‐alpha (TNF‐α), and IL‐10 expression was analyzed using flow cytometry. Results Although all four GAD65 peptide pools (PP1‐4) resulted in significantly higher expression of IFN‐γ by CD4 T cells (p = .003, p < .0001, p = .026, and p = .002, respectively), only pool 2 showed significant increase in IL‐17 expression (p < .0001) in T1D patients vs healthy controls. Interpeptide group comparison for immunogenicity revealed significantly higher IFN‐γ and IL‐17 expressions and significantly lower IL‐10 expression for PP2 compared to other groups (p < .0001, p = .02, and p = .04, respectively) in patients but not in controls. Further, group 2 peptides resulted in significant increase in CD4 T cells' expression of IFN‐γ and IL‐17 (p = .002 for both) and significant decrease in IL‐10 (p = .04) in HLA‐DRB1*03‐DQA1*05‐DQB1*02+ patients vs HLA‐DRB1*03‐DQA1*05‐DQB1*02+ controls. The CD4 T cells' expression of IL‐17 was significantly higher (p = .03) in recently diagnosed vs long‐standing HLA‐DRB1*03‐DQA1*05‐DQB1*02+ T1D patients. Conclusion GAD65 peptides, particularly those belonging to PP2, induced CD4 T cells to express IFN‐γ and IL‐17 cytokines in T1D patients, suggesting that group 2 peptides possibly presented by HLA‐DR3 molecule to CD4 T cells shift immune balance toward inflammatory phenotype in patients. |
Author | Mishra, Neetu Sharma, Akanksha Kumar, Neeraj Mishra, Gunja Mehra, Narinder K Tandon, Nikhil Kanga, Uma Chuzho, Neihenuo |
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Snippet | 摘要 目的:我们进行这项研究以确定与1型糖尿病(T1D)中人类白细胞抗原(HLA)‐DR3/DQ2介导的谷氨酸脱羧酶(GAD65)特异性CD4 T细胞激活可能相关的致糖尿病性GAD65肽。 方法:选取与HLA‐DR3/DQ2分子在体外结合强烈的前30个GAD65肽, 分为4个池组。使用这些肽来刺激研究对象的CD4... Abstract Aim We planned this study to identify diabetogenic glutamic acid decarboxylase (GAD65) peptides possibly responsible for human leucocyte antigen... |
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Title | HLA‐DR3介导的CD4 T细胞对1型糖尿病患者GAD65的应答 |
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