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Alteration of inhibitory and activating NK cell receptor expression on NK cells in HIV-infected Chinese.
MedLine Citation:
PMID:  21813117     Owner:  NLM     Status:  Publisher    
Natural killer (NK) cell function, based on the expression of activating and inhibitory natural killer receptors (NKRs), may become abnormal during human immunodeficiency virus (HIV) infection. In this study, we investigated changes in receptor expression with individual and combinational analysis on NK cell subsets in HIV-infected Chinese. The results showed that natural killer group 2 member D (NKG2D) expression on total NK cells decreased significantly in HIV infection, while the expressions of natural killer group 2 member A (NKG2A) and killer cell immunoglobulin-like receptor, three domains, long cytoplasmic tail 1 (KIR3DL1) on total NK cells were not significantly different between any of the groups including HIV-positive treatment-naïve group, AIDS treatment-naïve group, HAART-treatment AIDS group and HIV-negative control group. Individual analysis of NKG2A(+) and KIR3DL1(+) cells revealed no significant differences in expression in any NK cell subsets between any of the groups, but the combinational analysis of NKG2D(-)NKG2A(+), and NKG2D(-)KIR3DL1(+) on the NK CD56(dim) cell subset in the AIDS group were increased compared to the HIV-negative control group. On the contrary, NKG2D(-)NKG2A(+) expression on the CD56(bright) subset decreased in the AIDS group compared to the control group. Highly active antiretroviral therapy (HAART) treatment almost completely restored the levels of these receptor expressions. The results indicate that the distinct alteration of activating and inhibitory NKR expression on NK cells and its subsets occurred during HIV progression. Moreover, the imbalanced change of activating and inhibitory NKRs on NK cells and its subsets may explain the impaired NK cell immunity in HIV infected individuals.
Yongjun Jiang; Lei He; Huan Chen; Tristan Bice; Zining Zhang; Jing Liu; Haibo Ding; Xiaoxu Han; Hong Shang
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2011-7-20
Journal Detail:
Title:  Cellular immunology     Volume:  -     ISSN:  1090-2163     ISO Abbreviation:  -     Publication Date:  2011 Jul 
Date Detail:
Created Date:  2011-8-4     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  1246405     Medline TA:  Cell Immunol     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
Copyright © 2011 Elsevier Inc. All rights reserved.
Key Laboratory of AIDS Immunology of Ministry of Health, Department of Laboratory Medicine, The First Affiliated Hospital, China Medical University, Shenyang 110001, PR China.
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