Protective KIR-HLA interactions for HCV infection in intravenous drug users.

Abstract:

:Intravenous drug use has become the principal route of hepatitis C virus (HCV) transmission due to the sharing of infected needles. In this study, we analyzed the distribution of HLA-KIR genotypes among 160 Puerto Rican intravenous drug users (IDUs) with HCV infection and 92 HCV-negative Puerto Rican IDUs. We found a significant association between the presence of different combinations of KIR inhibitory receptor genes (KIR2DL2 and/or KIR2DL3, pC=0.01, OR=0.07; KIR2DL2 and/or KIR2DL3+KIR2DS4, pC=0.01, OR=0.39) and HLA-C1 homozygous genotypes (HLA-C1+KIR2DS4, pC=0.02, OR=0.43; HLA-C1+KIR2DL2+KIR2DS4, pC=0.02, OR=0.40) together with the activating receptor KIR2DS4 (HLA-C1+KIR2DS4+KIR2DL3 and/or KIR2DL2, pC=0.004, OR=0.38) with protection from HCV infection. Our findings in HCV-infected and non-infected IDUs suggest an important role for KIRs (KIR2DL2 and KIR2DL3) with group HLA-C1 molecules, in the presence of activating KIR2DS4, in protection from HCV infection. These results support the hypothesis that activator signaling, mediated by KIR2DS4, plays a determinant role in the regulation of NK cell antiviral-activity.

journal_name

Mol Immunol

journal_title

Molecular immunology

authors

Zúñiga J,Romero V,Azocar J,Terreros D,Vargas-Rojas MI,Torres-García D,Jiménez-Alvarez L,Vargas-Alarcón G,Granados-Montiel J,Husain Z,Chung RT,Alper CA,Yunis EJ

doi

10.1016/j.molimm.2009.05.014

subject

Has Abstract

pub_date

2009-08-01 00:00:00

pages

2723-7

issue

13

eissn

0161-5890

issn

1872-9142

pii

S0161-5890(09)00230-2

journal_volume

46

pub_type

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