| Leishmania donovani promastigotes evade the antimicrobial activity of neutrophil extracellular traps. | |
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MedLine Citation:
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PMID: 20826753 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Upon their recruitment to a site of infection and their subsequent activation, neutrophils release DNA and a subset of their granule content to form filamentous structures, known as neutrophil extracellular traps, which capture and kill microorganisms. In this study, we show that Leishmania promastigotes induced the rapid release of neutrophil extracellular traps from human neutrophils and were trapped by these structures. The use of Leishmania mutants defective in the biosynthesis of either lipophosphoglycan or GP63 revealed that these two major surface promastigote virulence determinants were not responsible for inducing the release of the surface protease neutrophil extracellular traps. We also demonstrate that this induction was independent of superoxide production by neutrophils. Finally, in contrast to wild-type Leishmania donovani promastigotes, mutants defective in lipophosphoglycan biosynthesis were highly susceptible to the antimicrobial activity of neutrophil extracellular traps. Altogether, our data suggest that neutrophil extracellular traps may contribute to the containment of L. donovani promastigotes at the site of inoculation, thereby facilitating their uptake by mononuclear phagocytes. |
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Authors:
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Christelle Gabriel; W Robert McMaster; Denis Girard; Albert Descoteaux |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't Date: 2010-09-08 |
Journal Detail:
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Title: Journal of immunology (Baltimore, Md. : 1950) Volume: 185 ISSN: 1550-6606 ISO Abbreviation: J. Immunol. Publication Date: 2010 Oct |
Date Detail:
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Created Date: 2010-09-22 Completed Date: 2010-10-19 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 2985117R Medline TA: J Immunol Country: United States |
Other Details:
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Languages: eng Pagination: 4319-27 Citation Subset: AIM; IM |
Affiliation:
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Institut National de la Recherche Scientifique, Institut Armand-Frappier, Laval, Quebec, Canada. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Cells, Cultured DNA / immunology Fluorescent Antibody Technique Glycosphingolipids / immunology Humans Leishmania donovani / immunology*, pathogenicity* Metalloendopeptidases / immunology Microscopy, Confocal Neutrophils / immunology* |
| Grant Support | |
ID/Acronym/Agency:
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MOP-12933//Canadian Institutes of Health Research |
| Chemical | |
Reg. No./Substance:
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0/Glycosphingolipids; 0/lipophosphonoglycan; 9007-49-2/DNA; EC 3.4.24.-/Metalloendopeptidases; EC 3.4.24.-/glycoprotein gp63, Leishmania |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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