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Tracking HIV persistence across T cell lineages during early ART-treated HIV-1-infection using a reservoir-marking humanized mouse model
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Tracking HIV persistence across T cell lineages during early ART-treated HIV-1-infection using a reservoir-marking humanized mouse model
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Journal Article
Tracking HIV persistence across T cell lineages during early ART-treated HIV-1-infection using a reservoir-marking humanized mouse model
2025
Overview
Human immunodeficiency virus (HIV) infection depletes CD4 T-cells, and long-term persistence of latent virus prevents full clearance of HIV even in the presence of effective antiretroviral therapy (ART), Here we present the HIV-1-induced lineage tracing (HILT) system, a model that irreversibly marks infected cells within a humanized mouse model, which detects rare latently infected cells. Immunodeficient mice transplanted with genetically modified hematopoietic stem cells develop a human immune system, in which CD4 T-cells contain a genetic switch that permanently labels cells infected by HIV-1 expressing cre-recombinase. Through single-cell RNA sequencing of HILT-marked cells during acute infection and post-ART treatment, we identify distinct CD4+ T-cell transcriptional lineages enriched in either active or latent infections. Comparative gene expression analysis highlights common pathways modulated in both states, including EIF2, Sirtuin, and protein ubiquitination. Critical regulators of these pathways, including
JUN
,
BCL2
, and
MDM2
, change to opposite directions in the two states, highlighting gene expression programs that may support HIV persistence across T-cell lineages and states.
Characterization of HIV infection at the cellular level is important to understand the molecular forces maintaining the latent reservoir and productive infection in T cells. Here authors describe the pathways that are governing these T cell states across the T lineage via a humanized mouse model allowing precise labeling of the HIV-infected cells coupled to single cell RNA sequencing.
Publisher
Nature Publishing Group UK,Nature Publishing Group,Nature Portfolio
Subject
/ 13/106
/ 13/31
/ 13/44
/ 14/35
/ 38
/ 38/39
/ 38/91
/ 64/60
/ Animals
/ CD4-Positive T-Lymphocytes - drug effects
/ CD4-Positive T-Lymphocytes - immunology
/ CD4-Positive T-Lymphocytes - metabolism
/ CD4-Positive T-Lymphocytes - virology
/ HIV
/ HIV Infections - drug therapy
/ Human immunodeficiency virus
/ Humanities and Social Sciences
/ Humans
/ Labels
/ Mice
/ RNA
/ Science
