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A Reproducibility-Based Computational Framework Identifies An Inducible, Enhanced Antiviral Dendritic Cell State In HIV-1 Elite Controllers (Sorted Bulk RNA-Seq)

ABSTRACT: A Reproducibility-Based Computational Framework Identifies An Inducible, Enhanced Antiviral Dendritic Cell State In HIV-1 Elite Controllers (Sorted Bulk RNA-Seq)

PROVIDER: PRJNA427307 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR6491640_1.fastq.gz	Fastqsanger.gz
	SRR6491640_2.fastq.gz	Fastqsanger.gz
	SRR6491650_1.fastq.gz	Fastqsanger.gz
	SRR6491650_2.fastq.gz	Fastqsanger.gz
	SRR6491641_1.fastq.gz	Fastqsanger.gz

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A Reproducibility-Based Computational Framework Identifies An Inducible, Enhanced Antiviral Dendritic Cell State In HIV-1 Elite Controllers

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A Reproducibility-Based Computational Framework Identifies An Inducible, Enhanced Antiviral Dendritic Cell State In HIV-1 Elite Controllers (scRNA-Seq)

Project description:Human immunity relies on the coordinated responses of many cellular subsets and functional states. Inter-individual variations in cellular composition and communication could thus potentially alter host protection. Here, we explore this hypothesis by applying single-cell RNA-Seq to examine viral responses among the dendritic cells (DCs) of three elite controllers (ECs) of HIV-1 infection. We discover a highly functional antiviral DC state in ECs whose fractional abundance after in vitro exposure to HIV-1 correlates with higher CD4+ T cell counts and lower HIV-1 viral loads, and that effectively primes polyfunctional T cell responses in vitro. We identify and validate select immunomodulators that increase the fractional abundance of this state in primary peripheral blood mononuclear cells (PBMCs) from healthy individuals in vitro.

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A Reproducibility-Based Computational Framework Identifies An Inducible, Enhanced Antiviral Dendritic Cell State In HIV-1 Elite Controllers (Sorted Bulk RNA-Seq)

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MicroRNAs differentially present in the plasma of HIV elite controllers

Project description:Elite controllers maintain HIV-1 viral loads below the limit of detection. The mechanisms responsible for this phenomenon are poorly understood. As microRNAs (miRNAs) are regulators of gene expression and some of them modulate HIV infection, we have studied the miRNA profile in plasma from HIV elite controllers and chronically infected individuals and compared against healthy donors. Several miRNAs correlate with CD4+ T cell count or with the known time of infection. No significant differences were observed between elite controllers and healthy donors; however, 16 miRNAs were different in the plasma of chronic infected versus healthy donors. In addition, levels of hsa-miR-29b-3p, hsa-miR-33a-5p and hsa-miR-146a-5p were higher in plasma from elite controllers than chronic infected and hsa-miR-29b-3p and hsa-miR-33a-5p overexpression significantly reduced the viral production in MT2 cells. Therefore, levels of circulating miRNAs might be of diagnostic and/or prognostic value for HIV infection. Additionally, hsa-miR-29b-3p and miR-33a-5p may be used in therapeutic strategies. An exploratory cross-sectional study of microRNA levels in EDTA plasma samples. Plasma samples were obtained from 24 subjects and were classified in 3 groups, 9 Elite Controllers (defined as individuals with plasma viral load (PVL) < 50 copies/ml, CD4 count >350/ml), 9 chronic HIV patients (CH) under anti-retroviral treatment and 6 healthy HIV negative donors (HD). This study was approved by the HuM-CM-)sped Foundation Ethics Committee and informed consent was obtained from all subjects.

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