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Inmunología (1987) ; 33(1): 11-20, ene.-mar. 2014. ilus
Article in Spanish | IBECS | ID: ibc-125459

ABSTRACT

Durante la infección por el virus de la inmunodeficiencia humana tipo-1 (VIH-1) se presentan alteraciones en la frecuencia, el fenotipo y la función de las células NK, lo cual reduce su capacidad antiviral y se correlaciona con el incremento de la carga viral y la progresión a sida. Sin embargo, los estudios en individuos que presentan resistencia natural al VIH-1 han mostrado que estas células intervienen en el control de la replicación viral, con efectos antivirales directos y con la activación de células dendríticas, otro componente de la inmunidad innata. A pesar de que estos linfocitos no poseen receptores antigénicos específicos, recientemente se ha reportado su capacidad para responder a péptidos del VIH-1. Aunque el mecanismo no está completamente elucidado, es indudable que este hallazgo abre un nuevo panorama en el estudio de nuevas alternativas terapéuticas o preventivas contra la infección por VIH-1 que involucren a las células NK (AU)


During human immunodeficiency virus type-1 (HIV-1) infection there are several changes in the frequency, phenotype and function of NK cells, altering their antiviral response. This is correlated with increased viral loads, and AIDS progression. However, studies in individuals with natural resistance to HIV-1 infection have shown that NK cells are very important incontrolling viral replication, not only for their antiviral activity, but also because of their effects on the activity of other innate immune cells, such as dendritic cells. NK cells do not have antigen receptors, but it has been recently reported that they can specifically respond to HIV-1 peptides. Although the mechanism is not fully elucidated, this finding open more options in the study of new therapeutic or preventative strategies against HIV-1 infection (AU)


Subject(s)
Humans , Killer Cells, Natural/immunology , HIV Infections/immunology , Acquired Immunodeficiency Syndrome/epidemiology , HIV-1/immunology , Immunity/immunology , Virus Activation/immunology , Receptors, KIR/immunology , Lymphocyte Subsets/immunology , Disease Progression , Drug Resistance, Viral/immunology
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