Staphylococcus aureus Staphopain A inhibits CXCR2-dependent neutrophil activation and chemotaxis.

Staphylococcus aureus Staphopain A inhibits CXCR2-dependent neutrophil activation and chemotaxis.
复制标题

DOI:
10.1038/emboj.2012.212
复制
发表时间:
2012-08-29
期刊:
影响因子:
11.4
通讯作者:
Rooijakkers, Suzan H. M.
Rooijakkers, Suzan H. M.
中科院分区:
生物学1区
文献类型:
--
作者:
Laarman, Alexander J.;Mijnheer, Gerdien;Mootz, Joe M.;van Rooijen, Willemien J. M.;Ruyken, Maartje;Malone, Cheryl L.;Heezius, Erik C.;Ward, Richard;Milligan, Graeme;van Strijp, Jos A. G.;de Haas, Carla J. C.;Horswill, Alexander R.;van Kessel, Kok P. M.;Rooijakkers, Suzan H. M.

文献摘要

参考文献

被引文献

相似文献

中性粒细胞表面的CXC趋化因子受体2(CXCR2)识别感染部位产生的趋化因子,在中性粒细胞活化和趋化等抗微生物宿主防御中发挥重要作用。金黄色葡萄球菌是一种成功的人类病原体,可分泌多种蛋白水解酶,但其对宿主免疫系统的影响尚不清楚。在这里,我们确定半胱氨酸蛋白酶葡萄球菌酶A为趋化因子受体阻滞剂。经葡萄球菌酶A处理的中性粒细胞对所有独特的CXCR2趋化因子的激活都没有反应,这是由于N-末端结构域的裂解,而N-末端结构域可以被特定的蛋白酶抑制剂中和。此外,金黄色葡萄球菌酶A抑制中性粒细胞向CXCR2趋化因子的迁移。通过比较耐甲氧西林金黄色葡萄球菌(MRSA)菌株和同基因的金黄色葡萄球菌A突变株,我们证明金黄色葡萄球菌A是唯一对CXCR2具有活性的分泌型蛋白酶。尽管无法切割小鼠CXCR2限制了体内研究,但我们的数据表明,葡萄球菌酶A是一种重要的免疫调节蛋白,通过特异性切割人CXCR2的N-末端结构域来阻止中性粒细胞募集。
The CXC chemokine receptor 2 (CXCR2) on neutrophils, which recognizes chemokines produced at the site of infection, plays an important role in antimicrobial host defenses such as neutrophil activation and chemotaxis. Staphylococcus aureus is a successful human pathogen secreting a number of proteolytic enzymes, but their influence on the host immune system is not well understood. Here, we identify the cysteine protease Staphopain A as a chemokine receptor blocker. Neutrophils treated with Staphopain A are unresponsive to activation by all unique CXCR2 chemokines due to cleavage of the N-terminal domain, which can be neutralized by specific protease inhibitors. Moreover, Staphopain A inhibits neutrophil migration towards CXCR2 chemokines. By comparing a methicillin-resistant S. aureus (MRSA) strain with an isogenic Staphopain A mutant, we demonstrate that Staphopain A is the only secreted protease with activity towards CXCR2. Although the inability to cleave murine CXCR2 limits in-vivo studies, our data indicate that Staphopain A is an important immunomodulatory protein that blocks neutrophil recruitment by specific cleavage of the N-terminal domain of human CXCR2.
DOI: 10.1021/bi200435n
发表时间: 2011-08-23
期刊: BIOCHEMISTRY
影响因子: 2.9
作者:
Lin, Ying-Chi;Anderson, Michele J.;Peterson, Marnie L.
通讯作者: Peterson, Marnie L.
DOI: 10.1074/jbc.m302926200
发表时间: 2003-10-17
影响因子: 4.8
作者:
Filipek, R;Rzychon, M;Bochtler, M
通讯作者: Bochtler, M
DOI: 10.1084/jem.20031636
发表时间: 2004-03-01
期刊: The Journal of experimental medicine
影响因子: --
作者:
de Haas CJ;Veldkamp KE;Peschel A;Weerkamp F;Van Wamel WJ;Heezius EC;Poppelier MJ;Van Kessel KP;van Strijp JA
通讯作者: van Strijp JA
DOI: 10.1182/blood-2008-04-153882
发表时间: 2009-01-08
期刊: BLOOD
影响因子: 20.3
作者:
Bestebroer, Jovanka;van Kessel, Kok P. M.;de Haas, Carla J. C.
通讯作者: de Haas, Carla J. C.