Please use this identifier to cite or link to this item: http://repository.ucc.edu.co/handle/ucc/970
Title: Involvement of Neutrophil Hyporesponse and the Role of Toll-Like Receptors in Human Immunodeficiency Virus 1 Protection
Author: Hernández, Juan C.
Giraldo, Diana M.
Paul, Stephane
Urcuqui Inchima, Silvio
Email autor: juanc.hernandezl@campusucc.edu.co
Issue Date: Mar-2015
Advisor / Validator: Hernández, Juan C.
Keywords: Neutrophils;HIV-1
Description: PlosOne, 2015; 10(3): e0119844.
Abstract: Objectives Neutrophils contribute to pathogen clearance through pattern recognition receptors (PRRs) activation. However, the role of PRRs in neutrophils in both HIV-1-infected [HIV-1(+)] and HIV-1-exposed seronegative individuals (HESN) is unknown. Here, a study was carried out to evaluate the level of PRR mRNAs and cytokines produced after activation of neutrophils from HIV-1(+), HESN and healthy donors. Methods The neutrophils were stimulated with specific agonists for TLR2, TLR4 and TLR9 in the presence of HIV-1 particles. Pro-inflammatory cytokine production, expression of neutrophil activation markers and reactive oxygen species (ROS) production were analyzed in neutrophils from HESN, HIV-1(+) and healthy donors (controls). Results We found that neutrophils from HESN presented reduced expression of PRR mRNAs (TLR4, TLR9, NOD1, NOD2, NLRC4 and RIG-I) and reduced expression of cytokine mRNAs (IL-1β, IL-6, IL-18, TNF-α and TGF-β). Moreover, neutrophils from HESN were less sensitive to stimulation through TLR4. Furthermore, neutrophils from HESN challenged with HIV-1 and stimulated with TLR2 and TLR4 agonists, produced significantly lower levels of reactive oxygen species, versus HIV-1(+). Conclusions A differential pattern of PRR expression and release of innate immune factors in neutrophils from HESN is evident. Our results suggest that lower neutrophil activation can be involved in protection against HIV-1 infection.
Program: Medicina
Headquarters: Medellín
Publisher: Universidad Cooperativa de Colombia, Facultad de Ciencias de la Salud, Programa de Medicina, Medellín y Envigado, Colombia, 00000
Type: Artículo
CC Licence: Licencia CC
Citation: Hernández, J. C., Giraldo, D. M., Paul, S. & Urcuqui Inchima, S. (2015). Involvement of neutrophil hyporesponse and the role of Toll-like receptors in HIV-1 protection. PlosOne, 10(3). Recuperado de https://doi.org/10.1371/journal.pone.0119844
Resource reference: http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0119844
Appears in Collections:Medicina

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