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A Virus-Packageable CRISPR System Identifies Host Dependency Factors Co-opted by Multiple HIV-1 Strains

ABSTRACT: A Virus-Packageable CRISPR System Identifies Host Dependency Factors Co-opted by Multiple HIV-1 Strains

PROVIDER: PRJNA925824 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR23148601.fastq.gz	Fastqsanger.gz
	SRR23148602.fastq.gz	Fastqsanger.gz
	SRR23148603.fastq.gz	Fastqsanger.gz
	SRR23148604.fastq.gz	Fastqsanger.gz
	SRR23148605.fastq.gz	Fastqsanger.gz

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A Virus-Packageable CRISPR System Identifies Host Dependency Factors Co-opted by Multiple HIV-1 Strains

Project description:The goal of this CRISPR-based screen (HIV-CRISPR) is to identify HIV-1 dependency factors by evaluating multiple pathways simultaneously. Here are Illumina sequencing data and counts files from HIV-CRISPR screens using a guide RNA library targeting the whole genome (TKOv3), a custom guide RNA library targeting human epigenome genes (HuEpi), a custom guide RNA library targeting interferon-stimulated genes (PIKA), and a custom guide RNA library of genes containing of a subset of each of the aforementioned libraries designed to target human dependency factors (HIVDEP). The HIV-CRISPR screens described here were performed in clonal ZAP knockout Jurkat cell lines as ZAP inhibition of the HIV-CRISPR vector has been previously described (PMID: 30520725).

2023-01-26 | GSE223326 | GEO

A Virus-Packageable CRISPR System Identifies Host Dependency Factors Co-Opted by Multiple HIV-1 Strains.

Project description:At each stage of the HIV life cycle, host cellular proteins are hijacked by the virus to establish and enhance infection. We adapted the virus packageable HIV-CRISPR screening technology at a genome-wide scale to comprehensively identify host factors that affect HIV replication in a human T cell line. Using a smaller, targeted HIV Dependency Factor (HIVDEP) sublibrary, we then performed screens across HIV strains representing different clades and with different biological properties to define which T cell host factors are important across multiple HIV strains. Nearly 90% of the genes selected across various host pathways validated in subsequent assays as bona fide host dependency factors, including numerous proteins not previously reported to play roles in HIV biology, such as UBE2M, MBNL1, FBXW7, PELP1, SLC39A7, and others. Our ranked list of screen hits across diverse HIV-1 strains form a resource of HIV dependency factors for future investigation of host proteins involved in HIV biology. IMPORTANCE With a small genome of ~9.2 kb that encodes 14 major proteins, HIV must hijack host cellular machinery to successfully establish infection. These host proteins necessary for HIV replication are called "dependency factors." Whole-genome, and then targeted screens were done to try to comprehensively identify all dependency factors acting throughout the HIV replication cycle. Many host processes were identified and validated as critical for HIV replication across multiple HIV strains.

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A CRISPR screen of HIV dependency factors reveals CCNT1 is non-essential in T cells but required for HIV-1 reactivation from latency [CRISPR]

Project description:We sought to explore the hypothesis that host factors required for HIV-1 replication also play a role in latency reversal. Using a CRISPR gene library of putative HIV dependency factors, we performed a screen to identify genes required for latency reactivation. We identified several HIV- 1 dependency factors that play a key role in HIV-1 latency reactivation including ELL, UBE2M, TBL1XR1, HDAC3, AMBRA1, and ALYREF. Knockout of Cyclin T1 (CCNT1), a component of the P-TEFb complex important for transcription elongation, was the top hit in the screen and had the largest effect on HIV latency reversal with a wide variety of latency reversal agents. Moreover, CCNT1 knockout prevents latency reactivation in a primary CD4+ T cell model of HIV latency without affecting activation of these cells. RNA sequencing data showed that CCNT1 regulates HIV-1 proviral genes to a larger extent than any other host gene and had no significant effects on RNA transcripts in primary T cells after activation. We conclude that CCNT1 function is redundant in T cells but is absolutely required for HIV latency reversal.

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Single-cell CRISPR Screen for HIV Host Dependency Factors Involved in Latency Reversal

Project description:Perturb-seq reveals intrinsic and extrinsic biological factors that regulate gene functions in laten HIV expression.

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HIV-1 burden influences host response to co-infection with Neisseria gonorrhoeae in vitro

Project description:Gene networks involved in HIV-1 infection of human PBMCs were investigated by dose dependant infection with HIV-1 (Bal). Perturbation of networks was evaluted using a co-infection with N. gonorrheae. Hierarchical clustering, fold change analysis, and contour mapping of genes was used to identify gene groups that were then anlayzed for statisically significant associations using EASE. Keywords: dose response

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