B7-DC, a new dendritic cell molecule with potent costimulatory properties for T cells.

B7-DC, a new dendritic cell molecule with potent costimulatory properties for T cells.
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DOI:
10.1084/jem.193.7.839
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发表时间:
2001-04-02
期刊:
The Journal of experimental medicine
影响因子:
--
通讯作者:
Tsuchiya H
Tsuchiya H
中科院分区:
其他
文献类型:
--
作者:
Tseng SY;Otsuji M;Gorski K;Huang X;Slansky JE;Pai SI;Shalabi A;Shin T;Pardoll DM;Tsuchiya H

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树突状细胞(Dendritic cells,DC)是一种独特的抗原提呈细胞(antigen presenting cells,APC),具有强大的T细胞刺激功能,通过提供共刺激信号指导T细胞的活化和分化。因此,它们是天然和疫苗诱导的免疫应答的关键调节剂。一个新的B7家族成员,B7-DC,其表达是高度限制的DC,被确定在DC和活化的巨噬细胞之间的差异表达的基因库。B7-DC不能结合B7.1/2受体CD 28和细胞毒性T淋巴细胞相关抗原(CTLA)-4,但能结合PD-1(B7-H1/PD-L1的受体)。B7-DC比B7.1更有效地共刺激T细胞增殖,并诱导不同的淋巴因子分泌模式。特别是,B7-DC强烈共刺激干扰素γ,但不刺激分离的幼稚T细胞产生白细胞介素(IL)-4或IL-10。B7-DC的这些特性可以解释DC的一些独特活性,例如它们启动有效的T辅助细胞1型应答的能力。
Dendritic cells (DCs), unique antigen-presenting cells (APCs) with potent T cell stimulatory capacity, direct the activation and differentiation of T cells by providing costimulatory signals. As such, they are critical regulators of both natural and vaccine-induced immune responses. A new B7 family member, B7-DC, whose expression is highly restricted to DCs, was identified among a library of genes differentially expressed between DCs and activated macrophages. B7-DC fails to bind the B7.1/2 receptors CD28 and cytotoxic T lymphocyte–associated antigen (CTLA)-4, but does bind PD-1, a receptor for B7-H1/PD-L1. B7-DC costimulates T cell proliferation more efficiently than B7.1 and induces a distinct pattern of lymphokine secretion. In particular, B7-DC strongly costimulates interferon γ but not interleukin (IL)-4 or IL-10 production from isolated naive T cells. These properties of B7-DC may account for some of the unique activity of DCs, such as their ability to initiate potent T helper cell type 1 responses.
B7-1和B7-2共刺激配体的比较分析:表达和功能。
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