Journal
MICROBIOLOGICAL RESEARCH
Volume 243, Issue -, Pages -Publisher
ELSEVIER GMBH
DOI: 10.1016/j.micres.2020.126644
Keywords
Neutrophil extracellular traps; Pathogens; Degradation; Evasion; Inhibition
Categories
Funding
- SEP-CONACYT Basic Scientific Research [A1-S-9424]
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This article discusses the resistance of neutrophil extracellular traps (NETs) against pathogens and summarizes the different mechanisms used by pathogens to evade the antimicrobial effect of NETs.
Neutrophils are the first cells of the innate immune system that respond to infection by arriving at sites when pathogens have exceeded physical barriers. Among their response mechanisms against pathogens is the release of neutrophil extracellular traps (NETs), which are composed of deoxyribonucleic acid and antimicrobial proteins such as neutrophil elastase, myeloperoxidase, antimicrobial peptides, and other proteins in neutrophil granules. The formation of extracellular traps is considered an effective strategy to capture and, in some cases, neutralize pathogenic bacteria, fungi, parasites, or viruses. However, it is also known that pathogens can respond to NETs by expressing some virulence factors, thus evading the antimicrobial effect of these structures. These include the secretion of proteins to degrade the deoxyribonucleic acid scaffold, the formation of biofilms that impede the effect of NETs, or the modification of its membrane structure to avoid interaction with NETs. In this review, we discuss these mechanisms and summarize the different pathogens that employ one or more mechanisms to evade the NET-mediated neutrophil response.
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