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Novel cell death program leads to neutrophil extracellular traps

Neutrophil extracellular traps (NETs) are extracellular structures composed of chromatin and granule proteins that bind and kill microorganisms. We show that upon stimulation, the nuclei of neutrophils lose their shape, and the eu- and heterochromatin homogenize. Later, the nuclear envelope and the...

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Detalles Bibliográficos
Autores principales: Fuchs, Tobias A., Abed, Ulrike, Goosmann, Christian, Hurwitz, Robert, Schulze, Ilka, Wahn, Volker, Weinrauch, Yvette, Brinkmann, Volker, Zychlinsky, Arturo
Formato: Texto
Lenguaje:English
Publicado: The Rockefeller University Press 2007
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2063942/
https://www.ncbi.nlm.nih.gov/pubmed/17210947
http://dx.doi.org/10.1083/jcb.200606027
Descripción
Sumario:Neutrophil extracellular traps (NETs) are extracellular structures composed of chromatin and granule proteins that bind and kill microorganisms. We show that upon stimulation, the nuclei of neutrophils lose their shape, and the eu- and heterochromatin homogenize. Later, the nuclear envelope and the granule membranes disintegrate, allowing the mixing of NET components. Finally, the NETs are released as the cell membrane breaks. This cell death process is distinct from apoptosis and necrosis and depends on the generation of reactive oxygen species (ROS) by NADPH oxidase. Patients with chronic granulomatous disease carry mutations in NADPH oxidase and cannot activate this cell-death pathway or make NETs. This novel ROS-dependent death allows neutrophils to fulfill their antimicrobial function, even beyond their lifespan.