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首页> 外文期刊>Proceedings of the National Academy of Sciences of the United States of America >Establishment of NOD-Pdcd1(-/-) mice as an efficient animal model of type I diabetes
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Establishment of NOD-Pdcd1(-/-) mice as an efficient animal model of type I diabetes

机译:建立NOD-Pdcd1(-/-)小鼠作为I型糖尿病的有效动物模型

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摘要

Mice deficient in programmed cell death 1 (PD-1, Pdcd1), an immunoinhibitory receptor belonging to the CD28/cytotoxic T lymphocyte-associated antigen-4 family, spontaneously develop lupus-like autoimmune disease and autoimmune dilated cardiomyopathy on C57BL/6 and BALB/c backgrounds, respectively. However, how PD-1 deficiency induces different forms of autoimmune diseases on these two strains was unknown. Here, we report that PD-1 deficiency specifically accelerates the onset and frequency of type I diabetes in NOD (nonobese diabetic) mice, with strong T helper 1 polarization of T cells infiltrating into islets. These results suggest that PD-1 deficiency accelerates autoimmune predisposition of the background strain, leading to the induction of different forms of autoimmune diseases depending on the genetic background of the strain. Using NOD-Pdcd1(-/-) mice as an efficient animal model of type I diabetes, we screened diabetes-susceptible loci by genetic linkage analysis. The diabetic incidence of NOD-Pdcd1(-/-) mice was controlled by five genetic loci, including three known recessive loci [Idd (insulin-dependent diabetes) 1, Idd17, and Idd20] and two previously unidentified dominant loci [Iddp (Idd under PD-1 deficiency) 1 and Iddp2].
机译:缺乏程序性细胞死亡1(PD-1,Pdcd1)的小鼠(属于CD28 /细胞毒性T淋巴细胞相关抗原4家族的一种免疫抑制受体)在C57BL / 6和BALB上自发发展为狼疮样自身免疫性疾病和自身免疫性扩张型心肌病/ c背景。然而,PD-1缺乏如何在这两种菌株上诱发不同形式的自身免疫疾病尚不清楚。在这里,我们报道PD-1缺乏症特别会加速NOD(非肥胖型糖尿病)小鼠的I型糖尿病的发作和发作频率,T细胞的强T辅助物1极化会渗入胰岛。这些结果表明,PD-1缺乏会加速本底菌株的自身免疫易感性,从而导致根据该菌株的遗传背景诱导不同形式的自身免疫性疾病。使用NOD-Pdcd1(-/-)小鼠作为I型糖尿病的有效动物模型,我们通过遗传连锁分析筛选了糖尿病易感基因座。 NOD-Pdcd1(-/-)小鼠的糖尿病发病率由五个遗传基因座控制,包括三个已知的隐性基因座[Idd(胰岛素依赖型糖尿病)1,Idd17和Idd20]和两个以前未鉴定的显性基因座[Iddp(Idd在PD-1缺陷下)1和Iddp2]。

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