首页> 外文期刊>Clinical immunology: The official journal of the Clinical Immunology Society >Altered susceptibility to EAE in congenic NOD mice: Altered processing of the encephalitogenic MOG35-55 peptide by NOR/LtJ mice.
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Altered susceptibility to EAE in congenic NOD mice: Altered processing of the encephalitogenic MOG35-55 peptide by NOR/LtJ mice.

机译:在同类NOD小鼠中对EAE的敏感性发生了变化:NOR / LtJ小鼠对致脑炎性MOG35-55肽的加工发生了变化。

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摘要

NOD mice (H-2 g7) naturally develop autoimmune diabetes, while the congenic NOR/LtJ mice (H-2 g7) are resistant. To determine if defective immune regulation renders NOD susceptible to autoimmune disease, we compared MOG35-55-induced EAE in NOD mice to that of NOR/LtJ. In two of three immunization protocols, the NOR/LtJ mice developed significantly reduced indices and severity of clinical disease, in spite of an exaggerated autoimmune response to MOG35-55. Characterization of the responding T cell repertoires revealed that V beta 8+ Th cells directed toward the MOG42-55 core epitope were dominant in both strains. Interestingly, CD8+ CTL were absent or significantly reduced in MOG35-55 lymphoblasts from NOR/LtJ mice, which poorly processed the MOG39-47 CTL epitope from MOG35-55. Thus, while particular MHC class II alleles may be associated with increased risk, molecules involved in the processing of key epitopes may be influential in the progression of autoimmune disease.
机译:NOD小鼠(H-2 g7)自然发展为自身免疫性糖尿病,而同基因NOR / LtJ小鼠(H-2 g7)具有抗药性。为了确定是否有缺陷的免疫调节使NOD易患自身免疫性疾病,我们将MOG35-55诱导的NOD小鼠中的EAE与NOR / LtJ进行了比较。在三种免疫方案中的两种中,尽管对MOG35-55的自身免疫反应过度,但NOR / LtJ小鼠的临床疾病指标和严重程度却大大降低。响应的T细胞库的表征表明,针对MOG42-55核心表位的V beta 8+ Th细胞在这两种菌株中均占优势。有趣的是,NOR / LtJ小鼠的MOG35-55淋巴母细胞中CD8 + CTL缺失或显着减少,而MOG35-55的MOG39-47 CTL表位加工较差。因此,尽管特定的II类MHC等位基因可能与增加的风险相关,但参与关键表位加工的分子可能对自身免疫疾病的进展有影响。

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