Neutrophil serine proteases in antibacterial defense.

Neutrophil serine proteases in antibacterial defense.
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DOI:
10.1016/j.mib.2014.11.002
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发表时间:
2015-02
影响因子:
5.4
通讯作者:
Rooijakkers SH
Rooijakkers SH
中科院分区:
生物学2区
文献类型:
--
作者:
Stapels DA;Geisbrecht BV;Rooijakkers SH

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中性粒细胞丝氨酸蛋白酶(NSP)对中性粒细胞的有效功能至关重要,对细菌感染具有重要的免疫保护作用。由于其广泛的底物专一性,这些类凝乳酶引发多种不利于细菌生存的反应,如直接杀菌、产生抗菌肽、灭活细菌毒力因子和形成中性粒细胞胞外陷阱。最近,通过发现独特的细菌逃避策略来对抗这些蛋白酶,NSP在抗菌防御中的重要性得到了进一步的强调。细菌可以通过保护细菌底物不被NSP裂解来间接解除NSP的武装,但也可以产生抑制分子,有效地阻止NSP。在这里,我们回顾了最近在NSP在宿主保护中对细菌感染的保护作用方面的见解,以及细菌用来抵消这些反应的优雅策略。
Neutrophil serine proteases (NSPs) are critical for the effective functioning of neutrophils and greatly contribute to immune protection against bacterial infections. Thanks to their broad substrate specificity, these chymotrypsin-like proteases trigger multiple reactions that are detrimental to bacterial survival such as direct bacterial killing, generation of antimicrobial peptides, inactivation of bacterial virulence factors and formation of neutrophil extracellular traps. Recently, the importance of NSPs in antibacterial defenses has been further underscored by discoveries of unique bacterial evasion strategies to combat these proteases. Bacteria can indirectly disarm NSPs by protecting bacterial substrates against NSP cleavage, but also produce inhibitory molecules that potently block NSPs. Here we review recent insights in the functional contribution of NSPs in host protection against bacterial infections and the elegant strategies that bacteria use to counteract these responses.
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