PD-1 and LAG-3 inhibitory co-receptors act synergistically to prevent autoimmunity in mice.

PD-1 and LAG-3 inhibitory co-receptors act synergistically to prevent autoimmunity in mice.
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DOI:
10.1084/jem.20100466
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发表时间:
2011-02-14
期刊:
The Journal of experimental medicine
影响因子:
--
通讯作者:
Honjo T
Honjo T
中科院分区:
其他
文献类型:
--
作者:
Okazaki T;Okazaki IM;Wang J;Sugiura D;Nakaki F;Yoshida T;Kato Y;Fagarasan S;Muramatsu M;Eto T;Hioki K;Honjo T

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一种新的自发性自身免疫性疾病小鼠模型揭示了抑制性共受体 LAG-3 在抑制自身免疫方面的重要作用。刺激性和抑制性共受体在免疫系统的调节中发挥着重要作用。我们描述了一种新的自发性自身免疫性疾病小鼠模型。激活诱导的胞苷脱氨酶相关自身免疫 (aida) 小鼠的编码淋巴细胞激活基因 3 (LAG-3)(一种抑制性共受体)的基因中存在功能丧失突变。虽然单独的 LAG-3 缺陷不会在非自身免疫倾向的小鼠品系中诱导自身免疫,但它会在编码抑制性辅助受体程序性细胞死亡 1 (PD-1) 的基因缺陷的 BALB/c 小鼠中诱导致命性心肌炎。此外,仅 LAG-3 缺乏就会加速非肥胖糖尿病小鼠的 1 型糖尿病。这些结果表明 LAG-3 与 PD-1 和/或其他免疫调节基因协同作用,可预防小鼠的自身免疫。
A new mouse model of spontaneous autoimmune disease reveals an important role for the inhibitory co-receptor LAG-3 in suppressing autoimmunity. Stimulatory and inhibitory co-receptors play fundamental roles in the regulation of the immune system. We describe a new mouse model of spontaneous autoimmune disease. Activation-induced cytidine deaminase–linked autoimmunity (aida) mice harbor a loss-of-function mutation in the gene encoding lymphocyte activation gene 3 (LAG-3), an inhibitory co-receptor. Although LAG-3 deficiency alone did not induce autoimmunity in nonautoimmune-prone mouse strains, it induced lethal myocarditis in BALB/c mice deficient for the gene encoding the inhibitory co-receptor programmed cell death 1 (PD-1). In addition, LAG-3 deficiency alone accelerated type 1 diabetes mellitus in nonobese diabetic mice. These results demonstrate that LAG-3 acts synergistically with PD-1 and/or other immunoregulatory genes to prevent autoimmunity in mice.
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