Staphylococcus aureus Staphopain A inhibits CXCR2-dependent neutrophil activation and chemotaxis.
Staphylococcus aureus Staphopain A inhibits CXCR2-dependent neutrophil activation and chemotaxis.
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DOI:
10.1038/emboj.2012.212
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发表时间:
2012-08-29
期刊:
影响因子:
11.4
通讯作者:
Rooijakkers, Suzan H. M.
中科院分区:
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.
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.
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影响因子:
3.2
作者:
Jones, Richard C.;Deck, Joanna;Hart, Mark E.
通讯作者:
Hart, Mark E.
影响因子:
2.9
作者:
Lin, Ying-Chi;Anderson, Michele J.;Peterson, Marnie L.
通讯作者:
Peterson, Marnie L.
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
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.