Neutrophil elastase and myeloperoxidase regulate the formation of neutrophil extracellular traps.
Neutrophil elastase and myeloperoxidase regulate the formation of neutrophil extracellular traps.
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中性粒细胞弹性酶和髓过氧化物酶调节中性粒细胞外陷阱的形成。
DOI:
10.1083/jcb.201006052
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发表时间:
2010-11-01
期刊:
影响因子:
--
通讯作者:
Zychlinsky A
中科院分区:
文献类型:
--
作者:
Papayannopoulos V;Metzler KD;Hakkim A;Zychlinsky A
Neutrophil elastase escapes azurophilic granules, translocates to the nucleus, and degrades histones to promote chromatin decondensation necessary for NET formation. Neutrophils release decondensed chromatin termed neutrophil extracellular traps (NETs) to trap and kill pathogens extracellularly. Reactive oxygen species are required to initiate NET formation but the downstream molecular mechanism is unknown. We show that upon activation, neutrophil elastase (NE) escapes from azurophilic granules and translocates to the nucleus, where it partially degrades specific histones, promoting chromatin decondensation. Subsequently, myeloperoxidase synergizes with NE in driving chromatin decondensation independent of its enzymatic activity. Accordingly, NE knockout mice do not form NETs in a pulmonary model of Klebsiella pneumoniae infection, which suggests that this defect may contribute to the immune deficiency of these mice. This mechanism provides for a novel function for serine proteases and highly charged granular proteins in the regulation of chromatin density, and reveals that the oxidative burst induces a selective release of granular proteins into the cytoplasm through an unknown mechanism.
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影响因子:
15.3
作者:
HIRSCH, J G
通讯作者:
HIRSCH, J G
DOI:
10.1073/pnas.0900226106
发表时间:
2009-04-21
影响因子:
11.1
作者:
Guimaraes-Costa, Anderson B.;Nascimento, Michelle T. C.;Saraiva, Elvira M.
通讯作者:
Saraiva, Elvira M.
影响因子:
3.4
作者:
Benghezal, Mohammed;Adam, Eric;Cosson, Pierre
通讯作者:
Cosson, Pierre
影响因子:
82.9
作者:
Clark, Stephen R.;Ma, Adrienne C.;Kubes, Paul
通讯作者:
Kubes, Paul
DOI:
10.1083/jcb.200606027
发表时间:
2007-01-15
期刊:
The Journal of cell biology
影响因子:
--
作者:
Fuchs TA;Abed U;Goosmann C;Hurwitz R;Schulze I;Wahn V;Weinrauch Y;Brinkmann V;Zychlinsky A
通讯作者:
Zychlinsky A