Assessing the Impact of Persistent HIV Infection on Innate Lymphoid Cells Using In Vitro Models.
Details
Serval ID
serval:BIB_032D423D930B
Type
Article: article from journal or magazin.
Collection
Publications
Institution
Title
Assessing the Impact of Persistent HIV Infection on Innate Lymphoid Cells Using In Vitro Models.
Journal
ImmunoHorizons
ISSN
2573-7732 (Electronic)
ISSN-L
2573-7732
Publication state
Published
Issued date
01/03/2023
Peer-reviewed
Oui
Volume
7
Number
3
Pages
243-255
Language
english
Notes
Publication types: Journal Article
Publication Status: ppublish
Publication Status: ppublish
Abstract
Pathogens that persist in their host induce immune dysfunctions even in the absence of detectable replication. To better understand the phenotypic and functional changes that persistent infections induce in sentinel innate immune cells, we developed human PBMC-based HIV models of persistent infection. Autologous nonactivated PBMCs were cocultured with chronically infected, acutely infected, or uninfected cells and were then analyzed by unsupervised high-dimensional flow cytometry. Using this approach, we identified prevalent patterns of innate immune dysfunctions associated with persistent HIV infections that at least in part mirror immune dysfunctions observed in patients. In one or more models of chronic infection, bystander CD16+ NK cells expressing markers of activation, such as CD94, CD45RO, CD62L, CD69, CD25, and immune checkpoints PD1, Tim3, TIGIT, NKG2A and Lag3, were significantly reduced. Conversely, helper ILC subsets expressing PDL1/PDL2 were significantly enriched in chronic infection compared with either uninfected or acute infection, suggesting that chronic HIV-1 infection was associated with an inhibitory environment for bystander ILC and NK subsets. The cell-based models of persistent infection that we describe here provide versatile tools to explore the molecular mechanisms of these immune dysfunctions and unveil the contribution of innate immunity in sustaining pathogen persistence.
Keywords
Humans, HIV Infections, Persistent Infection, Immunity, Innate, Leukocytes, Mononuclear, Killer Cells, Natural
Pubmed
Open Access
Yes
Create date
06/04/2023 12:18
Last modification date
23/01/2024 7:20