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Metabolic requirements for neutrophil extracellular traps formation

Open access
Rodríguez‐Espinosa, Oscar, Rojas‐Espinosa, Oscar, Moreno‐Altamirano, María Maximina Bertha, López‐Villegas, Edgar Oliver, Sánchez‐García, Francisco Javier·2015·Immunology

Abstract

Summary: As part of the innate immune response, neutrophils are at the forefront of defence against infection, resolution of inflammation and wound healing. They are the most abundant leucocytes in the peripheral blood, have a short lifespan and an estimated turnover of 10 10 to 10 11 cells per day. Neutrophils efficiently clear microbial infections by phagocytosis and by oxygen‐dependent and oxygen‐independent mechanisms. In 2004, a new neutrophil anti‐microbial mechanism was described, the release of neutrophil extracellular traps (NET s) composed of DNA, histones and anti‐microbial peptides. Several microorganisms, bacterial products, as well as pharmacological stimuli such as PMA, were shown to induce NET s. Neutrophils contain relatively few mitochondria, and derive most of their energy from glycolysis. In this scenario we aimed to analyse some of the metabolic requirements for NET formation. Here it is shown that NET s formation is strictly dependent on glucose and to a lesser extent on glutamine, that Glut‐1, glucose uptake, and glycolysis rate increase upon PMA stimulation, and that NET formation is inhibited by the glycolysis inhibitor, 2‐deoxy‐glucose, and to a lesser extent by the ATP synthase inhibitor oligomycin. Moreover, when neutrophils were exposed to PMA in glucose‐free medium for 3 hr, they lost their characteristic polymorphic nuclei but did not release NET s. However, if glucose (but not pyruvate) was added at this time, NET release took place within minutes, suggesting that NET formation could be metabolically divided into two phases; the first, independent from exogenous glucose (chromatin decondensation) and, the second (NET release), strictly dependent on exogenous glucose and glycolysis.

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Metadata

Authors
Rodríguez‐Espinosa, O., Rojas‐Espinosa, O., Moreno‐Altamirano, M. M. B., López‐Villegas, E. O., & Sánchez‐García, F. J.
Venue
Immunology
Publisher
Wiley
Published
2015-05-07
Volume
145
Issue
2
Pages
213-224
ISSN
  • 0019-2805 (ISSN-L)
  • 1365-2567
OpenAlex
W2019210852
Cited by
354
References
49
FWCI
4.28
Type
journal article
Language
en
Open access
green

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CoChat. (2026). Citation check: Metabolic requirements for neutrophil extracellular traps formation. https://app.cochat.ai/papers/10.1111/imm.12437
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Rodríguez‐Espinosa, O., Rojas‐Espinosa, O., Moreno‐Altamirano, M. M. B., López‐Villegas, E. O., & Sánchez‐García, F. J. (2015). Metabolic requirements for neutrophil extracellular traps formation. Immunology. https://doi.org/10.1111/imm.12437

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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

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