Frequency of Effector Memory Cells Expressing Integrin α4ß7 Is Associated With TGF-ß1 Levels in Therapy Naïve HIV Infected Women With Low CD4+ T Cell Count.
Front Immunol
; 12: 651122, 2021.
Article
in En
| MEDLINE
| ID: mdl-33828560
ABSTRACT
Integrin α4ß7 expressing CD4+ T cells are preferred targets for HIV infection and are thought to be predictors of disease progression. Concurrent analysis of integrin α4ß7 expressing innate and adaptive immune cells was carried out in antiretroviral (ART) therapy naïve HIV infected women in order to determine its contribution to HIV induced immune dysfunction. Our results demonstrate a HIV infection associated decrease in the frequency of integrin α4ß7 expressing endocervical T cells along with an increase in the frequency of integrin α4ß7 expressing peripheral monocytes and central memory CD4+ T cells, which are considered to be viral reservoirs. We report for the first time an increase in levels of soluble MAdCAM-1 (sMAdCAM-1) in HIV infected individuals as well as an increased frequency and count of integrin ß7Hi CD8+ memory T cells. Correlation analysis indicates that the frequency of effector memory CD8+ T cells expressing integrin α4ß7 is associated with levels of both sMAdCAM-1 and TGF-ß1. The results of this study also suggest HIV induced alterations in T cell homeostasis to be on account of disparate actions of sMAdCAM-1 and TGF-ß1 on integrin α4ß7 expressing T cells. The immune correlates identified in this study warrant further investigation to determine their utility in monitoring disease progression.
Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
T-Lymphocytes, Cytotoxic
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Cell Adhesion Molecules
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HIV Infections
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HIV-1
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Transforming Growth Factor beta1
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Mucoproteins
Type of study:
Observational_studies
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Prognostic_studies
/
Risk_factors_studies
Limits:
Adolescent
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Adult
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Female
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Humans
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Middle aged
Language:
En
Journal:
Front Immunol
Year:
2021
Document type:
Article
Affiliation country: