Selective reduction of IFN-γ single positive mycobacteria-specific CD4+ T cells in HIV-1 infected individuals with latent tuberculosis infection
File(s)Riou et al tuberculosis 2016.pdf (1.67 MB)
Accepted version
Author(s)
Type
Journal Article
Abstract
HIV-1 is recognized to increase the risk for tuberculosis even before CD4+ T cell deficiency is profound. To better understand how HIV-1 alters immunity to latent tuberculosis, we compared the magnitude and functional profile of mycobacteria-specific CD4+ T cells between HIV-uninfected and HIV-infected individuals, using flow cytometry. In HIV-1 infection, IFN-γ single positive mycobacteria-specific CD4+ T cells were decreased, while the frequency of polyfunctional cells (IFN-γ+IL-2+TNF-α+) remained unchanged. Moreover, the proportion of IFN-γ single positive cells correlated inversely with viral replication. Our results suggest that HIV-1 affects mycobacteria-specific cells differentially, depending on their functional capacity.
Date Issued
2016-08-09
Date Acceptance
2016-07-31
Citation
Tuberculosis, 2016, 101, pp.25-30
ISSN
1873-281X
Publisher
Elsevier
Start Page
25
End Page
30
Journal / Book Title
Tuberculosis
Volume
101
Copyright Statement
© 2016, Elsevier. Licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/
Sponsor
Wellcome Trust
Grant Number
104803/Z/14/ZR
Subjects
Microbiology
11 Medical And Health Sciences
Publication Status
Published