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<i>Salmonella</i> Typhimurium Triggers Extracellular Traps Release in Murine Macrophages
Indexado
WoS WOS:000648627300001
Scopus SCOPUS_ID:85105555769
DOI 10.3389/FCIMB.2021.639768
Año 2021
Tipo artículo de investigación

Citas Totales

Autores Afiliación Chile

Instituciones Chile

% Participación
Internacional

Autores
Afiliación Extranjera

Instituciones
Extranjeras


Abstract



Salmonella comprises two species and more than 2500 serovars with marked differences in host specificity, and is responsible for a wide spectrum of diseases, ranging from localized gastroenteritis to severe life-threatening invasive disease. The initiation of the host inflammatory response, triggered by many Pathogen-Associated Molecular Patterns (PAMPs) that Salmonella possesses, recruits innate immune cells in order to restrain the infection at the local site. Neutrophils are known for killing bacteria through oxidative burst, amid other mechanisms. Amongst those mechanisms for controlling bacteria, the release of Extracellular Traps (ETs) represents a newly described pathway of programmed cell death known as ETosis. Particularly, Neutrophil Extracellular Traps (NETs) were first described in 2004 and since then, a number of reports have demonstrated their role as a novel defense mechanism against different pathogens. This released net-like material is composed of cellular DNA decorated with histones and cellular proteins. These structures have shown ability to trap, neutralize and kill different kinds of microorganisms, ranging from viruses and bacteria to fungi and parasites. Salmonella was one of the first microorganisms that were reported to be killed by NETs and several studies have confirmed the observation and deepened into its variants. Nevertheless, much less is known about their counterparts in other immune cells, e.g. Macrophage Extracellular Traps (METs) and Salmonella-induced MET release has never been reported so far. In this work, we observed the production of METs induced by Salmonella enterica serovar Typhimurium and recorded their effect on bacteria, showing for the first time that macrophages can also release extracellular DNA traps upon encounter with Salmonella Typhimurium. Additionally we show that METs effectively immobilize and reduce Salmonella survival in a few minutes, suggesting METs as a novel immune-mediated defense mechanism against Salmonella infection. Of note, this phenomenon was confirmed in primary macrophages, since MET release was also observed in bone marrow-derived macrophages infected with Salmonella. The evidence of this peculiar mechanism provides new incipient insights into macrophages ' role against Salmonella infection and can help to design new strategies for the clinical control of this transcendental pathogen.

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Disciplinas de Investigación



WOS
Immunology
Microbiology
Scopus
Infectious Diseases
Microbiology
Microbiology (Medical)
Immunology
SciELO
Sin Disciplinas

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Publicaciones WoS (Ediciones: ISSHP, ISTP, AHCI, SSCI, SCI), Scopus, SciELO Chile.

Colaboración Institucional



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Autores - Afiliación



Ord. Autor Género Institución - País
1 Monaco, Amy - UNIV REPUBLICA - Uruguay
Universidad de la Republica Instituto de Higiene - Uruguay
2 Canales-Huerta, Nicole Mujer Universidad de Chile - Chile
3 JARA-WILDE, J. Mujer Universidad de Chile - Chile
4 HAERTEL-GRUNDLER, STEFFEN Hombre Universidad de Chile - Chile
Natl Ctr Hlth Informat Syst CENS - Chile
National Center for Health Information Systems CENS - Chile
5 Chabalgoity, Jose Alejandro Hombre UNIV REPUBLICA - Uruguay
Universidad de la Republica Instituto de Higiene - Uruguay
6 Moreno, Maria Mujer UNIV REPUBLICA - Uruguay
Universidad de la Republica Instituto de Higiene - Uruguay
7 Scavone, Paola Mujer Inst Invest Biol Clemente Estable - Uruguay
Instituto de Investigaciones Biológicas Clemente Estable - Uruguay

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Financiamiento



Fuente
FONDECYT
CORFO
Fondo Nacional de Desarrollo Científico y Tecnológico
DAAD
ACM
Chilean Millennium Science Initiative
AUCI Program for SouthSouth Collaboration Uruguay-Chile

Muestra la fuente de financiamiento declarada en la publicación.

Agradecimientos



Agradecimiento
This work was supported by the Chilean Millennium Science Initiative P09-015-F; FONDECYT 1181823; FONDECYT 1211988; DAAD 519605, CORFO 16CTTS-66390 and ACM 170003 to SH, PS, JJ-W, NC-H; AUCI Program for SouthSouth Collaboration Uruguay-Chile.
This work was supported by the Chilean Millennium Science Initiative P09-015-F; FONDECYT 1181823; FONDECYT 1211988; DAAD 519605, CORFO 16CTTS-66390 and ACM 170003 to SH, PS, JJ-W, NC-H; AUCI Program for South-South Collaboration Uruguay-Chile.

Muestra la fuente de financiamiento declarada en la publicación.