Neutrophil extracellular traps are induced by Mycobacterium tuberculosis

被引：205

作者：

Ramos-Kichik, Victoria ^{[1
]}

Mondragon-Flores, Ricardo ^{[2
]}

Mondragon-Castelan, Monica ^{[2
]}

Gonzalez-Pozos, Sirenia ^{[2
]}

Muniz-Hernandez, Sae ^{[2
]}

Rojas-Espinosa, Oscar ^{[1
]}

Chacon-Salinas, Rommel ^{[1
]}

Estrada-Parra, Sergio ^{[1
]}

Estrada-Garcia, Iris ^{[1
]}

机构：

[1] IPN, Escuela Nacl Ciencias Biol, Dept Inmunol, Mexico City 11340, DF, Mexico

[2] IPN, Ctr Invest & Estudios Avanzados, Unidad Microscopia Elect, Dept Bioquim, Mexico City 07360, DF, Mexico

来源：

TUBERCULOSIS | 2009年 / 89卷 / 01期

关键词：

Neutrophils; M. tuberculosis genotypes; M; canettii; NETs; ROS; INFECTION; APOPTOSIS; STREPTOCOCCUS; ACTIVATION; EXPRESSION; RESPONSES; ESCAPE; ALLOWS;

D O I：

10.1016/j.tube.2008.09.009

中图分类号：

R392 [医学免疫学]; Q939.91 [免疫学];

学科分类号：

100102 ;

摘要：

Due to the intracellular nature of mycobacterial infections, little attention has been paid to the possible extracellular role that neutrophils might play in tuberculosis. The recent discovery of neutrophil extracellular traps (NETs), composed of DNA and antimicrobial proteins, introduces a new perspective to our understanding of the mechanism used by the innate immune System to contain and kill microorganisms. In this study, we tested in vitro whether Mycobacterium tuberculosis, an intracellular pathogen, can induce NETs formation and if this newly discovered mechanism is involved in a control response during mycobacterial infection. We found that two different genotypes of M. tuberculosis exerted, in vitro, a cytotaxic effect and induced subcellular changes oil infected neutrophils, leading to NETs formation in a time dependent manner. NETs trapped mycobacteria but were unable to kill them. NETs formation induced by M, tuberculosis could help understand the early stages of mycobacterial pathogenesis. (C) 2008 Elsevier Ltd. All rights reserved

引用

页码：29 / 37

页数：9

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