CD22 and Siglec-G in B cell function and tolerance.

CD22 and Siglec-G in B cell function and tolerance.
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DOI:
10.1016/j.it.2012.04.010
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发表时间:
2012-08
影响因子:
16.8
通讯作者:
Tedder TF
Tedder TF
中科院分区:
医学1区
文献类型:
--
作者:
Poe JC;Tedder TF

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免疫系统已进化成两个主要臂,原始先天臂是第一道防线,但相对短暂且作用广泛,而高级适应性臂则产生免疫“记忆”,允许快速、特定的回忆反应。 T 细胞依赖性 2 型 (TI-2) 抗原 (Ag) 会引发先天免疫反应。然而,由于其“随时准备”的性质,免疫系统的先天臂如何保持对潜在丰富的宿主 TI-2 Ag 的耐受性仍然难以捉摸。因此,定义建立先天免疫耐受的机制非常重要。这篇综述重点介绍了 B 细胞对理论自身 TI-2 Ag 耐受性的最新见解,并研究了 B 细胞限制性 Siglecs、CD22 和 Siglec-G 如何促进这一过程。
The immune system has evolved into two main arms, the primitive innate arm that is the first line of defense but relatively short-lived and broad acting, and the advanced adaptive arm that generates immunologic “memory” allowing rapid, specific recall responses. T cell-independent type-2 (TI-2) antigens (Ags) invoke innate immune responses. However, due to its “at the ready” nature, how the innate arm of the immune system maintains tolerance to potentially abundant host TI-2 Ags remains elusive. Therefore, it is important to define the mechanisms that establish innate immune tolerance. This review highlights recent insights into B cell tolerance to theoretical self TI-2 Ags, and examines how the B cell-restricted Siglecs, CD22 and Siglec-G, might contribute to this process.
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