Similar Datasets
Project description:14 children vertically HIV infected ART treated within 6 months of life (ET) and 6 children vertically HIV infected ART treated after 12 months of life were studied to understand the effect of early ART initiation on HIV specific CD4+ T cells and CD8+ T cells functionalities. Additionally, RNAseq on unstimulated PBMC was performed to also evaluate the impact of early ART on the immune transcriptome.
2019-11-13 | GSE138804 | GEO
Project description:Antiretroviral treatment (ART) reduces the risk of developing active tuberculosis (TB) in HIV co-infected persons. We aimed to investigate the mechanisms of ART-mediated prevention of TB in HIV and TB co-infected patients on antiretroviral therapy (ART), recruited in Khayelitsha, South Africa. RNA was extracted from whole blood collected in TempusTM Blood RNA tubes at day 0 and at 1, 3 and 6 months of ART. We first performed a pilot RNAseq experiment of 12 samples (3 patients at 4 timepoints) for 50 million reads to assess if samples with lower quality and/or quantity will still yield meaningful outputs and the minimum number of reads required for sufficient coverage. This was followed by a second RNAseq experiment of 35 samples with sufficient quality: 11 from day 0 and 24 from 6 months of ART, 8 of which are paired. However, only n=6 samples from day 0 and n=6 samples from 6 months of ART could be analyzed. Results indicated reduced immune activation at 6 months of ART compared to day 0 with significant fall in the Hallmark Interferon alpha, Interferon gamma and IL-6-JAK-STAT-signalling pathway genes. These results were supported by similar changes in soluble protein markers in the plasma. Overall, our data indicates that ART- induced decrease in immune activation may contribute to reduced susceptibility to tuberculosis in HIV-TB co-infected persons.
2021-02-17 | GSE158208 | GEO
Project description:Concerns about impending failure of artemisinin compounds (ART) have grown with global use of ART-based combination therapy (ACT) against malaria. WHO has defined Plasmodium falciparum resistance to ART as prolonged parasite clearance half-life in vivo (t1/2) plus the presence of certain K13 Kelch-propeller substitutions, e.g. C580Y. Recrudescences and fever clearance times after ART monotherapy, however, have not correlated well with these criteria. We have crossed K13 C580 wild-type and 580Y-mutant parasites for ART studies in Aotus. Artesunate treated C580- but not 580Y-infections recrudesced requiring retreatment, and K13 type had little or no effect on t1/2. These results challenge K13 and t1/2 variations as markers of increased resistance to ART per se and emphasize the need for effective partner drugs in ACTs.
2019-02-11 | GSE78689 | GEO
Project description:The androgen receptor (AR) directs diverse biological processes through interaction with coregulators such as androgen receptor trapped clone-27 (ART-27). The impact of ART-27 on genome-wide transcription was examined. The studies indicate that loss of ART-27 enhances expression of many androgen-regulated genes, suggesting that ART-27 inhibits gene expression. Surprisingly, classes of genes that are upregulated upon ART-27 depletion include regulators of DNA damage checkpoint and cell cycle progression, suggesting that ART-27 functions to keep expression levels of these genes low. Experiment Overall Design: Steroid-deprived LNCaP cells were transfected with control or ART-27 siRNA and stimulated with ethanol vehicle or 10 nM R1881 for 18 hrs. 8 samples, 4 conditions, 2 replicates per condition.
2009-06-08 | E-GEOD-14043 | biostudies-arrayexpress
Project description:HIV-1 persistence during ART is due to the establishment of long-lived viral reservoirs in resting immune cells. Using an NHP model of barcoded SIVmac239 intravenous infection and therapeutic dosing of the anti-TGFBR1 inhibitor galunisertib (LY2157299), we confirmed the latency reversal properties of in vivo TGF-beta blockade, decreased viral reservoirs and stimulated immune responses. Eight SIV-infected macaques on suppressive ART were treated with 4 2-week cycles of galunisertib. ART was discontinued 3 weeks after the last dose, and macaques euthanized 6 weeks after ART-interruption(ATI). One macaque did not rebound, while the remaining rebounded between week 2 and 6 post-ATI. Galunisertib led to viral reactivation as indicated by plasma viral load and immunoPET/CT with the 64Cu-DOTA-F(ab')2-p7D3-probe. Half to 1 Log decrease in cell-associated (CA-)SIV DNA was detected in lymph nodes, gut and PBMC, while intact pro-virus in PBMC decreased by 3-fold. No systemic increase in inflammatory cytokines was observed. High-dimensions cytometry, bulk and single-cell RNAseq revealed a shift toward an effector phenotype in T and NK cells.
2024-01-08 | GSE244828 | GEO
Project description:HIV-1 persistence during ART is due to the establishment of long-lived viral reservoirs in resting immune cells. Using an NHP model of barcoded SIVmac239 intravenous infection and therapeutic dosing of the anti-TGFBR1 inhibitor galunisertib (LY2157299), we confirmed the latency reversal properties of in vivo TGF-beta blockade, decreased viral reservoirs and stimulated immune responses. Eight SIV-infected macaques on suppressive ART were treated with 4 2-week cycles of galunisertib. ART was discontinued 3 weeks after the last dose, and macaques euthanized 6 weeks after ART-interruption(ATI). One macaque did not rebound, while the remaining rebounded between week 2 and 6 post-ATI. Galunisertib led to viral reactivation as indicated by plasma viral load and immunoPET/CT with the 64Cu-DOTA-F(ab')2-p7D3-probe. Half to 1 Log decrease in cell-associated (CA-)SIV DNA was detected in lymph nodes, gut and PBMC, while intact pro-virus in PBMC decreased by 3-fold. No systemic increase in inflammatory cytokines was observed. High-dimensions cytometry, bulk and single-cell RNAseq revealed a shift toward an effector phenotype in T and NK cells.
2024-01-08 | GSE244870 | GEO
Project description:A paired analysis of peripheral blood mononuclear cells (PBMCs) isolated before and after antiretroviral therapy (ART) from a robust number of HIV-infected patients (N=36). Results identify a total of 4,157 DEGs following ART in HIV-infected participants and the transition from a period of active virus replication before ART to one of viral suppression This study evaluated PBMC gene expression in cells from 36 (4 dropped from analysis) recently HIV-infected individuals to identify differentially expressed genes following 48 weeks of ART
2013-09-10 | E-GEOD-44228 | biostudies-arrayexpress
Project description:The androgen receptor (AR) directs diverse biological processes through interaction with coregulators such as androgen receptor trapped clone-27 (ART-27). The impact of ART-27 on genome-wide transcription was examined. The studies indicate that loss of ART-27 enhances expression of many androgen-regulated genes, suggesting that ART-27 inhibits gene expression. Surprisingly, classes of genes that are upregulated upon ART-27 depletion include regulators of DNA damage checkpoint and cell cycle progression, suggesting that ART-27 functions to keep expression levels of these genes low. Keywords: LNCaP, cell type comparison, UXT, ART-27, androgen receptor, R1881, AR, androgen-regulated gene expression, prostate cancer
2009-05-28 | GSE14043 | GEO
Project description:Antiretroviral therapy (ART) has reduced morbidity and mortality in HIV infection; however HIV-1-associated neurocognitive disorders (HAND) persist despite treatment. We used microarray analysis in post-mortem brain tissues to determine ART effectiveness in the brain and to identify molecular signatures of HAND under ART. We performed microarray analysis using Affymetrix Arrays in portmortem brain tissues from seven treated and eight untreated HAND patients and six uninfected controls.
2011-09-24 | E-GEOD-28160 | biostudies-arrayexpress