Annexin A2 binds to endosomes following organelle destabilization by particulate wear debris.

Annexin A2 binds to endosomes following organelle destabilization by particulate wear debris.
复制标题

DOI:
10.1038/ncomms1754
复制
发表时间:
2012-03-27
影响因子:
16.6
通讯作者:
--
中科院分区:
综合性期刊1区
文献类型:
--
作者:

文献摘要

参考文献

被引文献

相似文献

内体功能取决于细胞器限制膜的完整性,细胞器限制膜的破坏会引起炎症和细胞死亡。在这里,我们发现超高分子量聚乙烯颗粒的吞噬作用会诱导内体限制膜损伤,导致组织蛋白酶渗漏到细胞质中并激活 NLRP3 炎性体。通过二维 DIGE 蛋白分析、内体分级分离、内源性和膜联蛋白 A2-GFP 转染细胞的共聚焦分析以及免疫金标记显示膜联蛋白 A2 募集到受损细胞器。使用荧光脂质体的结合实验证实膜联蛋白 A2 募集到含有吞噬聚乙烯颗粒的内体中。最后,在暴露于聚乙烯颗粒后,膜联蛋白 A2 缺失小鼠的树突状细胞中发现胞质组织蛋白酶、NLRP3 炎症小体激活和 IL-1 产生增加。总之,这些结果表明膜联蛋白 A2 在细胞器不稳定后与内体膜结合的功能作用。
Endosomal functions are contingent on the integrity of the organelle-limiting membrane, whose disruption induces inflammation and cell death. Here we show that phagocytosis of ultrahigh molecular weight polyethylene particles induces damage to the endosomal-limiting membrane and results in the leakage of cathepsins into the cytosol and NLRP3-inflammasome activation. Annexin A2 recruitment to damaged organelles is shown by two-dimensional DIGE protein profiling, endosomal fractionation, confocal analysis of endogenous and annexin A2–GFP transfected cells, and immunogold labelling. Binding experiments, using fluorescent liposomes, confirms annexin A2 recruitment to endosomes containing phagocytosed polyethylene particles. Finally, an increase in cytosolic cathepsins, NLRP3-inflammasome activation, and IL-1 production is seen in dendritic cells from annexin A2-null mice, following exposure to polyethylene particles. Together, the results indicate a functional role of annexin A2 binding to endosomal membranes following organelle destabilization.
DOI: 10.1016/s0361-9230(02)00948-6
发表时间: 2003-02-15
影响因子: 3.8
作者:
Ditaranto-Desimone, K;Saito, M;Yang, AJ
通讯作者: Yang, AJ
DOI: 10.1006/jsbi.1996.0013
发表时间: 1996-01-01
影响因子: 3
作者:
Kremer, JR;Mastronarde, DN;McIntosh, JR
通讯作者: McIntosh, JR
DOI: 10.1038/ni.1631
发表时间: 2008-08
期刊: Nature immunology
影响因子: 30.5
作者:
通讯作者: --
膜联蛋白A1调节肠粘膜损伤,炎症和修复。
DOI: 10.4049/jimmunol.181.7.5035
发表时间: 2008-10-01
期刊: Journal of immunology (Baltimore, Md. : 1950)
影响因子: --
作者:
Babbin BA;Laukoetter MG;Nava P;Koch S;Lee WY;Capaldo CT;Peatman E;Severson EA;Flower RJ;Perretti M;Parkos CA;Nusrat A
通讯作者: Nusrat A
DOI: 10.1002/eji.200940185
发表时间: 2010-03
影响因子: 5.4
作者:
Hornung, Veit;Latz, Eicke
通讯作者: Latz, Eicke