MiRNA expression profiles in productively HIV-1 infected and bystander primary human CD4+ T-cells
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PROVIDER: PRJNA1036612 | ENA |
REPOSITORIES: ENA
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Project description:CD4+ T-cells are the main target of HIV-1 and several host factors can positively or negatively modulate HIV-1 infection of these cells. MiRNAs aresmall regulatory RNAs that are involved in the regulation of basic cellular functions. They are also increasingly recognized as host factors regulatingHIV-1 infection, replication and persistence. In order to identify miRNAs involved in HIV-1 infection of CD4+ T-cells, we performed globaltranscriptomic analyses of productively infected and HIV-1 exposed but non infected bystander CD4+ T-cells and compared their MIRNA profiles with uninfected cells. Theseanalyses were performed in CD4+T-cells isolated from 3 different healthy blood donors. Both miRNA and mRNA expression profiles were compared. Our results show that bystander and uninfected CD4+ T-cells do not display important differences in their miRNA expression profiles even though their respectivemRNA expression profiles were markedly different. In contrast, both mRNA and miRNA expressionprofiles from productively infected CD4+ T-cells were significantly different from those of uninfected cells. Overall, these results suggest that HIV-1infection impacts the miRNA expression profile of primary CD4+ T-cells.
2024-08-02 | GSE247194 | GEO
Project description:CD4+ T-cells are the main target of HIV-1 and several host factors can positively or negatively modulate HIV-1 infection of these cells. MiRNAs aresmall regulatory RNAs that are involved in the regulation of basic cellular functions. They are also increasingly recognized as host factors regulatingHIV-1 infection, replication and persistence. In order to identify miRNAs involved in HIV-1 infection of CD4+ T-cells, we performed globaltranscriptomic analyses of productively infected and HIV-1 exposed but non infected bystander CD4+ T-cells and compared their MIRNA profiles with uninfected cells. Theseanalyses were performed in CD4+T-cells isolated from 3 different healthy blood donors. Both miRNA and mRNA expression profiles were compared. Our results show that bystander and uninfected CD4+ T-cells do not display important differences in their miRNA expression profiles even though their respectivemRNA expression profiles were markedly different. In contrast, both mRNA and miRNA expressionprofiles from productively infected CD4+ T-cells were significantly different from those of uninfected cells. Overall, these results suggest that HIV-1infection impacts the miRNA expression profile of primary CD4+ T-cells.
2024-08-02 | GSE247191 | GEO
Project description:Productively HIV-1 infected and bystander primary human CD4+ T-cells
| PRJNA1036599 | ENA
Project description:Macrophages are heterogeneous immune cells with distinct origins, phenotypes, functions and tissue localization. Their susceptibility to HIV-1 is subject to variations from permissiveness to resistance, owing in part to regulatory microRNAs. Here, we used RNAseq to examine the expression of >400 microRNAs in productively infected and bystander cells of HIV-1-exposed macrophage cultures. Two micro-RNAs up regulated in bystander macrophages, miR-221 and miR-222, were identified as negative regulators of CD4 expression and CD4-mediated HIV-1 entry. Both microRNAs were enhanced by TNF-α, an inhibitor of CD4 expression. MiR-221/miR-222 inhibitors recovered HIV-1 entry in TNF-α-treated macrophages by enhancing CD4 expression, and increased HIV-1 replication and spread in macrophages by countering TNF-α-enhanced miR-221/miR-222 expression in bystander cells. In line with these findings, HIV-1-resistant intestinal myeloid cells express higher levels of miR-221 than peripheral blood monocytes. Thus, miR-221/miR-222 act as effectors of the antiviral host response activated during macrophage infection that restrict HIV-1 entry.
2017-09-11 | GSE103394 | GEO
Project description:mRNA expression profiles in productively HIV-1 infected and bystander primary human CD4+ T-cells
| PRJNA1036610 | ENA
Project description:Kuo H, Ahmad R, Lee GQ, Chen H, Ouyang Z, Szucs MJ, Kim D, Tsibris A, Chun T, Battivelli E, Verdin E, Rosenberg ES, Carr SA, Yu XG, Lichterfeld M. Immunity 2018. HIV-1 infection of CD4 T cells leads to cytopathic effects and cell demise, which is counterintuitive to the observation that certain HIV-1-infected cells possess a remarkable long-term stability and can persist for decades in infected individuals treated with suppressive antiretroviral therapy (ART). Using quantitative mass spectrometry-based proteomics, we show that HIV-1 infection can activate cellular survival programs that are governed by BIRC5, a molecular inhibitor of cell apoptosis that is frequently over-expressed in malignant cells. BIRC5 and its upstream regulator OX40 are upregulated in productively and latently infected CD4 T cells, and are functionally involved in maintaining their integrity and viability. Moreover, OX40-expressing CD4 T cells from ART-treated patients are strongly enriched for sequence-intact HIV-1, and pharmaceutical inhibition of BIRC5 results in a selective decrease of HIV-1-infected cells in vitro. Together, these findings suggest that BIRC5 supports long-term survival of HIV-1-infected cells and offer new perspectives for clinical strategies to reduce persisting viral reservoirs.
2018-04-02 | MSV000082229 | MassIVE
Project description:Host directed therapies against HIV-1 are thought to be critical for long term containment of the HIV-1 pandemic but remain elusive. Since HIV-1 infects and manipulates important effectors of both the innate and adaptive immune system, identifying modulations of the host cell systems in humans during HIV-1 infection may be crucial for the development of immune based therapies. Here, we quantified the changes of the proteome in human CD4+ T cells upon HIV-1 infection, both in vitro and in vivo. A SWATH-MS approach was used to measure the proteome of human primary CD4+ T cells infected with HIV-1 in vitro as well as CD4+ T cells from HIV-1 infected patients with paired samples on and off antiretroviral treatment. In the in vitro experiment, the proteome of CD4+ T cells was quantified over a time course following HIV-1 infection. 1,725 host cell proteins and 4 HIV-1 proteins were quantified, with 145 proteins changing significantly during the time course. Changes in the proteome peaked 24 hours after infection, concomitantly with significant HIV-1 protein production. In the in vivo branch of the study, CD4+ T cells from viremic patients and those with no detectable viral load after treatment were sorted and the proteomes quantified. We consistently detected 895 proteins, 172 of which were considered to be significantly different between viraemic patients and patients undergoing successful treatment. The proteome of in vitro infected CD4+ T cells was modulated on multiple functional levels, including TLR-4 signalling and the type 1 interferon signalling pathway. Perturbations in the type 1 interferon signalling pathway were recapitulated in CD4+ T cells from patients. The study shows that proteome maps generated by SWATH-MS indicate a range of functionally significant changes in the proteome of HIV infected human CD4+ T cells. Exploring these perturbations in more detail may help identify new targets for immune based interventions.
2017-02-28 | PXD005234 | Pride
Project description:HSV-2 coinfection is associated with increased HIV-1 viral loads and expanded tissue reservoirs, but the mechanisms are not well-defined. HSV-2 recurrences result in an influx of activated CD4+ T cells to sites of viral replication and an increase in activated CD4+ T cells in peripheral blood. We hypothesized that HSV-2 induces changes in these cells that facilitate HIV-1 reactivation and replication and tested this hypothesis in human CD4+ T cells and 2D10 cells, a model of HIV-1 latency. HSV-2 promoted latency reversal in HSV-2 infected and bystander 2D10 cells. Bulk and single-cell RNA sequencing studies of activated primary human CD4+ T cells identified decreased expression of HIV-1 restriction factors and increased expression of transcripts including MALAT1 that could drive HIV replication in both the HSV-2-infected and bystander cells. Transfection of 2D10 cells with VP16, an HSV-2 protein that regulates transcription, significantly upregulated MALAT1 expression, decreased trimethylation of lysine 27 on histone H3 protein, and triggered HIV latency reversal. Knockout of MALAT1 from 2D10 cells abrogated the response to VP16 and reduced the response to HSV-2 infection. These results demonstrate that HSV-2 contributes to HIV-1 reactivation through diverse mechanisms including upregulation of MALAT1 to release epigenetic silencing.
2023-05-07 | GSE229391 | GEO
Project description:Sexually transmitted infections (STIs) are commonly reported among HIV-1 infected patients. The increasing prevalence of the most common STI, Chlamydia trachomatis (CT), among HIV-1 infected people suggests a role in HIV-1 infectivity. However, the mechanisms modulating the enhancement of HIV-1 infectivity during HIV-1/STIs coinfection remain elusive. The stimulation of CD4 T cells during CT infection may modulate the expression of specific genes, which in turn enhance the susceptibility and infectivity of CT-specific CD4 T cells to HIV-1 infection. After three days of CT stimulation of PBMCs followed by 3 days of HIV-1 infection, we observed a significant increase in HIV-1 p24 levels among clinically diagnosed C. trachomatis-infected patients as compared to cells from healthy donors. Similarly, ex vivo CT antigen-stimulated PBMCs from healthy donors showed enhanced susceptibility to HIV-1 as compared to unstimulated PBMCs. CT-specific CD4 T cells also harbour more HIV-1 copy numbers as compared to healthy unstimulated CD4 T cells. RNA-seq data revealed the upregulation of CCR chemokine receptors and cytokines in CD4 T cells from CT-stimulated CD4 T cells infected with HIV-1.
2021-12-31 | GSE164264 | GEO
Project description:HSV-2 coinfection is associated with increased HIV-1 viral loads and expanded tissue reservoirs, but the mechanisms are not well-defined. HSV-2 recurrences result in an influx of activated CD4+ T cells to sites of viral replication and an increase in activated CD4+ T cells in peripheral blood. We hypothesized that HSV-2 induces changes in these cells that facilitate HIV-1 reactivation and replication and tested this hypothesis in human CD4+ T cells and 2D10 cells, a model of HIV-1 latency. HSV-2 promoted latency reversal in HSV-2 infected and bystander 2D10 cells. Bulk and single-cell RNA sequencing studies of activated primary human CD4+ T cells identified decreased expression of HIV-1 restriction factors and increased expression of transcripts including MALAT1 that could drive HIV replication in both the HSV-2-infected and bystander cells. Transfection of 2D10 cells with VP16, an HSV-2 protein that regulates transcription, significantly upregulated MALAT1 expression, decreased trimethylation of lysine 27 on histone H3 protein, and triggered HIV latency reversal. Knockout of MALAT1 from 2D10 cells abrogated the response to VP16 and reduced the response to HSV-2 infection. These results demonstrate that HSV-2 contributes to HIV-1 reactivation through diverse mechanisms including upregulation of MALAT1 to release epigenetic silencing.
2023-05-07 | GSE229390 | GEO