Signaling and ligand interaction of ILT7: receptor-mediated regulatory mechanisms for plasmacytoid dendritic cells.

Signaling and ligand interaction of ILT7: receptor-mediated regulatory mechanisms for plasmacytoid dendritic cells.
复制标题

DOI:
10.1111/j.0105-2896.2009.00867.x
复制
发表时间:
2010-03
影响因子:
8.7
通讯作者:
Bover L
Bover L
中科院分区:
医学1区
文献类型:
--
作者:
Cao W;Bover L

文献摘要

参考文献

被引文献

相似文献

浆细胞样树突状细胞(Plasmacytoid dendritic cells,pDC)是一种特化的树突状细胞(dendritic cells,DC),在Toll样受体(TLR)激活后可产生大量的I型干扰素(interferon,IFN)。人pDC优先表达免疫球蛋白样转录物7(ILT 7; LILRA 4),其与信号传导衔接子偶联以激活突出的基于免疫受体酪氨酸的激活基序(ITAM)介导的信号传导途径。ILT 7蛋白直接结合于骨髓基质细胞抗原2(BST 2; CD 317)蛋白并可被其激活,所述骨髓基质细胞抗原2(BST 2; CD 317)蛋白的表达在预先暴露于IFN的细胞上或在人癌细胞的表面上发现。ILT 7和BST 2之间的相互作用起到确保病毒感染期间pDC的适当TLR应答的作用,并且可能参与pDC-肿瘤串扰。受体介导的调节机制的两种相反模式共同作用以微调pDC的先天免疫。
Plasmacytoid dendritic cells (pDCs) are specialized dendritic cells (DCs) that produce large amounts of type I interferon (IFN) after Toll-like receptor (TLR) activation. Human pDCs preferentially express immunoglobulin-like transcript 7 (ILT7; LILRA4), which couples with a signaling adapter to activate a prominent immunoreceptor tyrosine-based activation motif (ITAM)–mediated signaling pathway. ILT7 protein directly binds to and can be activated by bone marrow stromal cell antigen 2 (BST2; CD317) protein, the expression of which is found on cells preexposed to IFN or on the surface of human cancer cells. The interaction between ILT7 and BST2 functions to assure an appropriate TLR response by pDCs during viral infection and likely participates in pDC-tumor crosstalk. Two opposing modes of receptor-mediated regulatory mechanisms work jointly to fine tune the innate immunity of pDCs.
DOI: 10.1186/1471-2407-9-102
发表时间: 2009-04-01
期刊: BMC cancer
影响因子: 3.8
作者:
Cai D;Cao J;Li Z;Zheng X;Yao Y;Li W;Yuan Z
通讯作者: Yuan Z
DOI: 10.1182/blood-2003-09-3108
发表时间: 2004-06-01
期刊: BLOOD
影响因子: 20.3
作者:
Blasius, A;Vermi, W;Colonna, M
通讯作者: Colonna, M
DOI: 10.4049/jimmunol.167.10.5786
发表时间: 2001-11-15
影响因子: 4.4
作者:
Canavez, F;Young, NT;Parham, P
通讯作者: Parham, P
DOI: 10.1126/science.285.5428.727
发表时间: 1999-07-30
期刊: SCIENCE
影响因子: 56.9
作者:
Bauer, S;Groh, V;Spies, T
通讯作者: Spies, T
DOI: 10.1126/science.1064890
发表时间: 2001-11-16
期刊: SCIENCE
影响因子: 56.9
作者:
Blanco, P;Palucka, AK;Banchereau, J
通讯作者: Banchereau, J