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HIV gp120 modulates the vaginal transcriptome

ABSTRACT: During sexual transmission of HIV-1 from male to female partners, the vagina is the initial site of contact with HIV infected semen. The mechanism of HIV traversing the CD4 negative multi-layered stratified squamous epithelial barrier of the vagina to infect sub-epithelial susceptible immune cells, is hitherto unknown. HIV gp120 binds to several host proteins on vaginal epithelial cells. To gain an insight into the physiologic changes that may occur in vaginal epithelial cells in response to interactions with HIV gp120, and obtain an understanding of the molecular mechanisms by which HIV breaches the vaginal epithelium, a global snap shot of gene expression profiles in the vaginal epithelial cell line Vk2/E6E7, treated with HIV gp120 was determined. The vaginal epithelial cell line Vk2/E6E7 was treated with HIV gp120 (83nM) for 24 hr, and Agilent one colour, microarrays were performed.

ORGANISM(S): Homo sapiens

PROVIDER: GSE44914 | GEO | 2014/03/01

SECONDARY ACCESSION(S): PRJNA192452

REPOSITORIES: GEO

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HIV gp120 modulates the vaginal transcriptome

Project description:During sexual transmission of HIV-1 from male to female partners, the vagina is the initial site of contact with HIV infected semen. The mechanism of HIV traversing the CD4 negative multi-layered stratified squamous epithelial barrier of the vagina to infect sub-epithelial susceptible immune cells, is hitherto unknown. HIV gp120 binds to several host proteins on vaginal epithelial cells. To gain an insight into the physiologic changes that may occur in vaginal epithelial cells in response to interactions with HIV gp120, and obtain an understanding of the molecular mechanisms by which HIV breaches the vaginal epithelium, a global snap shot of gene expression profiles in the vaginal epithelial cell line Vk2/E6E7, treated with HIV gp120 was determined. The vaginal epithelial cell line Vk2/E6E7 was treated with HIV gp120 (83nM) for 24 hr, and Agilent one colour, microarrays were performed. Agilent one-color experiment,Organism: Human ,Agilent-Custom Whole Genome Human 8x60k designed by Genotypic Technology Pvt. Ltd. (AMADID: 027114), Labeling kit: Agilent Quick-Amp labeling Kit (p/n5190-0442)

2014-03-01 | E-GEOD-44914 | biostudies-arrayexpress

Transcriptomic profiling of rhesus macaques vaccinated with Ad26/ALVAC+gp120 or DNA/ALVAC+gp120

Project description:We contrasted innate and adaptive immune responses of HIV vaccine candidates of varying efficacy in macaques that shared the ALVAC+gp120 protein boost with an ALVAC, DNA or Ad26 prime modality. The vaccine efficacies of the DNA/ALVAC+gp120 and ALVAC/ALVAC+gp120 vaccine regimens, both protective, were associated with qualitative temporal-spatial differences in the innate CD14+ and CD16+ cells in blood and tissues. The activation of hypoxia and the inflammasome in CD14+ DR+ CD16- classical monocytes and CD4+ Th2 responses correlated with a decreased risk of SIVmac251 acquisition. CD4+ Th2 cells, in turn, correlated with mucosal NKp44+ cells and mucosal protective antibodies to V2. In contrast, the Ad26/ALVAC+gp120 vaccine resulted in increased de novo differentiated CX3CR1+ CD163+ macrophages in lymph nodes, increased CD4+ Th17 cells in blood and rectal mucosa, and a lack vaccine efficacy. These data posit that the engagement of classical monocytes and inflammasome activation is central for the elicitation of protective innate and adaptive responses by the ALVAC-based HIV vaccine platform.

2018-02-23 | GSE108011 | GEO

HIV-1 gp120 impairs spatial memory through CREB

Project description:HIV-associated neurocognitive disorders (HAND) remain an unsolved problem that persists despite using antiretroviral therapy. We have obtained data showing that HIV-gp120 protein contributes to neurodegeneration through metabolic reprogramming. This led to decreased ATP levels, lower mitochondrial DNA copy numbers, and loss of mitochondria cristae, all-important for mitochondrial biogenesis. gp120 protein also disrupted mitochondrial movement and synaptic plasticity. Searching for the mechanisms involved, we found that gp120 alters the cyclic AMP response element-binding protein (CREB) phosphorylation on serine residue 133 necessary for its function as a transcription factor. Since CREB regulates the promoters of PGC1 and BDNF genes, we found that CREB dephosphorylation causes PGC1 and BDNF loss of functions. Our data was validated in vitro and in vivo. The negative effect of gp120 was alleviated in cells and animals in the presence of rolipram that inhibits the phosphodiesterase protein 4 (PDE4) and restores CREB phosphorylation. We concluded that HIV-gp120 protein contributes to HAND via inhibition of CREB protein function.

2022-06-09 | PXD031891 | Pride

HIV-1 gp120 impairs B cell proliferation by inducing TGF-β1 production and FcRL4 expression via an α4β7-dependent mechanism

Project description:The anti-HIV humoral immune response following acute infection is delayed and ineffective. HIV envelope protein gp120 binds to and signals through α4β7 on T cells. We show that gp120 also binds and signals through α4β7 on B cells, resulting in an abortive proliferative response. In primary B cells, gp120 signaling through α4β7 resulted in increased expression of TGF-β1 and the B cell inhibitory receptor FcRL4. Co-culture of B cells with HIV-infected autologous CD4+ T cells also resulted in increased B cell FcRL4 expression. These findings indicate that, in addition to inducing chronic immune activation, viral proteins can contribute directly to HIV-associated B cell dysfunction, thus providing a mechanism whereby the virus subverts the early HIV-specific humoral immune response.

2013-10-17 | GSE49019 | GEO

HIV-1 gp120 impairs B cell proliferation by inducing TGF-β1 production and FcRL4 expression via an α4β7-dependent mechanism

2013-10-17 | E-GEOD-49019 | biostudies-arrayexpress

Transcription profiling of human CD4+ T cells induced by HIV-1 gp120/V3 loop peptides, time series

Project description:Comparative changes of gene expression in human primary CD4+ T cells induced by HIV-1 gp120/V3 loop synthetic peptides, during antigen presentation

2008-09-01 | E-MEXP-1586 | biostudies-arrayexpress

Effects of Injectable DMPA and Combined Oral Contraceptive Use on HIV Susceptibility Factors in Pig-tailed Macaques

Project description:Progestin-based contraception may increase the risk of vaginal HIV acquisition to a level greater than the progesterone-rich luteal phase of the menstrual cycle, which has been demonstrated to have a significantly higher transmission rate compared to the follicular phase. We used pig-tailed macaque (Macaca nemestrina) model to evaluate the effects of administration of the oral the combined oral contraceptives (COCs) depot medroxyprogesterone acetate (DMPA) and levonorgestrel (LNG) on mucosal factors that influence HIV susceptibility. We compared the pH and vaginal epithelial thickness data from previous studies, and evaluated contraception-induced molecular changes in the vagina using transcriptional and cytokine profiling. The administration of DMPA caused a pronounced thinning of the vaginal epilthelium relative to measurements takein in the follicular or luteal phase. DMPA also induced a significant increase in vaginal IL10 expression. Lastly, using RNA-Seq analyses of vaginal biopsies, we noted that both DMPA- and LNG-based contraception induced a signature of gene expression similar to that of the luteal phase, only more exacerbated, and including widespread down-regulation of HIV-restriction genes. Use of progestin-based contraception might engender a milieu that poses an increased risk of HIV transmission than that of the luteal phase via vaginal thinning, induction of immunosuppressive cytokines, and widespread suppression of HIV restriction factors.

2020-06-07 | GSE99800 | GEO

Homo sapiens

Project description:HIV gp120 modulates the vaginal transcriptome

| PRJNA192452 | ENA

Effect of p38 MAPK inhibitor SB203580 on gene expression in monocytic THP-1 cells stimulated with HIV gp120 or LPS.

Project description:Human monocytic THP-1 cells were exposed to HIV envelope protein gp120 or bacterial LPS in the presence and absence of a pharmacological inhibitor of the p38 mitogen-activated protein kinase (MAPK) for 4 and 24 hours. A microarray analysis was performed in order to assess differential gene expression at the RNA level. Human monocytic THP-1 cells were pre-treated for 15 min with 10 M-BM-5M SB203580 followed by exposure for 4 h or 24 h to 1 nM HIV gp120SF162 or 1 M-BM-5g/ml LPS. 0.1 % DMSO and 0.001 % BSA served as vehicle controls for SB203580 and gp120, respectively. The experimental samples were 1) control 4 h, 2) gp120 4 h, 3) LPS 4 h, 4) SB203580 (SB) 4 h, 5) SB+gp120 4 h, 6) SB+LPS 4 h, 7) control 24 h, 8) gp120 24 h, 9) LPS 24 h, 10) SB 24 h, 11) SB+gp120 24 h, 12) SB+LPS 24 h. RNA was isolated from three biological replicates for each experimental condition using an RNeasy kit commercially available from Qiagen (Valencia, CA). Roughly 2 X 106 cells were collected to obtain 500 ng M-bM-^@M-^S 2 M-BM-5g RNA. RNA quality (A260/A280 ratio ~1.8-2.0) was tested using the NanoDrop system from Thermo Scientific (Rockford, IL). High quality RNA was then provided to the Microarray/ QPCR Facility Core at Sanford-Burnham Medical Research Institute and DNA microarray was performed using the whole genome gene-expression analysis HumanHT-12 v4 Expression BeadChip kit from Illumina (San Diego, CA). Microarray results were further analyzed by Dr. Roy Williams (Bioinformatics Core, Sanford-Burnham Medical Research Institute) using the GeneSpring GX platform

2014-12-25 | E-GEOD-53712 | biostudies-arrayexpress

Variability in the Glycosylation Patterns of gp120 Proteins from Different Human Immunodeficiency Virus Type 1 Isolates Expressed in Different Host Cells

Project description:The mature HIV-1 envelope (Env) glycoprotein is composed of gp120, the exterior subunit, and gp41, the transmembrane subunit assembled as trimer by noncovalent interaction. There is a great body of literature to prove that gp120 binds to CD4 first, then to the co-receptor. We have recently demonstrated that gp120 cannot bind to the co-receptor without first interacting with CD4. Previous studies provided different glycomic maps for the HIV-1 gp120. Here, we build on previous work to report that the use of LC-MS/MS, in conjunction with hydrophilic interaction liquid chromatography (HILIC) enrichment to glycosylation sites, is associated with the assorted neutralizing or binding events of glycosylation targeted antibodies from different clades or strains. In this study, the microheterogeneity of the glycosylation from 4 different clades of gp120s is deeply investigated. Aberrant glycosylation patterns were detected on gp120 originated from different clades, viral sequences and host cells. The results of this study may help provide better understanding of the mechanism of how the glycans participate in antibody neutralizing process that target glycosylation sites.

2021-11-01 | PXD027353 | Pride

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