NDLI: CD4+CD38+ central memory T cells contribute to HIV persistence in HIV-infected individuals on long-term ART

Content Provider	Springer Nature : BioMed Central
Author	Song, Cheng-Bo Zhang, Le-Le Wu, Xian Fu, Ya-Jing Jiang, Yong-Jun Shang, Hong Zhang, Zi-Ning
Abstract	Background Despite the effective antiretroviral treatment (ART) of HIV-infected individuals, HIV persists in a small pool. Central memory CD4+ T cells (Tcm) make a major contribution to HIV persistence. We found that unlike HLA-DR, CD38 is highly expressed on the Tcm of HIV-infected subjects receiving ART for > 5 years. It has been reported that the half-life of total and episomal HIV DNA in the CD4+CD38+ T cell subset, exhibits lower decay rates at 12 weeks of ART. Whether CD38 contributes to HIV latency in HIV-infected individuals receiving long-term ART is yet to be addressed. Methods Peripheral blood mononuclear cells (PBMCs) were isolated from the whole blood of HIV-infected subjects receiving suppressive ART. The immunophenotyping, proliferation and apoptosis of CD4+ T cell subpopulations were detected by flow cytometry, and the level of CD38 mRNA and total HIV DNA were measured using real-time PCR and digital droplet PCR, respectively. A negative binomial regression model was used to determine the correlation between CD4+CD38+ Tcm and total HIV DNA in CD4+ T cells. Results CD38 was highly expressed on CD4+ Tcm cells from HIV infected individuals on long-term ART. Comparing with HLA-DR−Tcm and CD4+HLA-DR+ T cells, CD4+CD38+ Tcm cells displayed lower levels of activation (CD25 and CD69) and higher levels of CD127 expression. The proportion of CD38+ Tcm, but not CD38− Tcm cells can predict the total HIV DNA in the CD4+ T cells and the CD38+ Tcm subset harbored higher total HIV DNA copy numbers than the CD38− Tcm subset. After transfected with CD38 si-RNA in CD4+ T cells, the proliferation of CD4+ T cells was inhibited. Conclusion The current date indicates that CD4+CD38+ Tcm cells contribute to HIV persistence in HIV-infected individuals on long-term ART. Our study provides a potential target to resolve HIV persistence.
Related Links	https://translational-medicine.biomedcentral.com/counter/pdf/10.1186/s12967-020-02245-8.pdf
Ending Page	10
Page Count	10
Starting Page	1
File Format	HTM / HTML
ISSN	14795876
DOI	10.1186/s12967-020-02245-8
Journal	Journal of Translational Medicine
Issue Number	1
Volume Number	18
Language	English
Publisher	BioMed Central
Publisher Date	2020-02-24
Access Restriction	Open
Subject Keyword	Biomedicine Medicine Public Health HIV Reservoir CD38 Tcm CD4+ T cell Medicine/Public Health
Content Type	Text
Resource Type	Article
Subject	Biochemistry, Genetics and Molecular Biology Medicine
Journal Impact Factor	6.1/2023
5-Year Journal Impact Factor	6.3/2023

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CD4+CD38+ central memory T cells contribute to HIV persistence in HIV-infected individuals on long-term ART

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