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Prolonged Kaposi's Sarcoma-associated Herpesvirus vIL-6 Exposure Enhances Inflammatory Responses by Epigenetic Reprogramming (RNA-seq)

ABSTRACT: Prolonged Kaposi's Sarcoma-associated Herpesvirus vIL-6 Exposure Enhances Inflammatory Responses by Epigenetic Reprogramming (RNA-seq)

PROVIDER: PRJNA974057 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR24653344_1.fastq.gz	Fastqsanger.gz
	SRR24653344_2.fastq.gz	Fastqsanger.gz
	SRR24653345_1.fastq.gz	Fastqsanger.gz
	SRR24653345_2.fastq.gz	Fastqsanger.gz
	SRR24653346_1.fastq.gz	Fastqsanger.gz

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Prolonged Kaposi's Sarcoma-associated Herpesvirus vIL-6 Exposure Enhances Inflammatory Responses by Epigenetic Reprogramming.

Project description:Prolonged Kaposi's Sarcoma-associated Herpesvirus vIL-6 Exposure Enhances Inflammatory Responses by Epigenetic Reprogramming.

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Prolonged Kaposi's Sarcoma-associated Herpesvirus vIL-6 Exposure Enhances Inflammatory Responses by Epigenetic Reprogramming (RNA-seq)

Project description:Kaposi sarcoma-associated herpesvirus (KSHV) inflammatory cytokine syndrome (KICS) is a newly described chronic inflammatory disease condition caused by KSHV infection and is characterized by high KSHV viral load and sustained elevations of serum KSHV-encoded IL-6 (vIL-6) and human IL-6 (hIL-6). KICS has significant immortality and possesses greater risks of having other complications, which include malignancies. Although prolonged inflammatory vIL-6 exposure by persistent KSHV infection is expected to have key roles in subsequent disease development, the biological effects of prolonged vIL-6 exposure remain elusive. Using thiol(SH)-Linked Alkylation for the Metabolic Sequencing (SLAM-seq) and Cleavage Under Target & Release Using Nuclease (CUT&RUN) analysis, we studied the effect of prolonged vIL-6 exposure in chromatin landscape and resulting cytokine production. The studies showed that prolonged vIL-6 exposure increased Bromodomain containing 4 (BRD4) and histone H3 lysine 27 acetylation (H3K27Ac) co-occupancies on chromatin, and the recruitment sites were frequently co-localized with poised RNA polymerase II with associated enzymes. Increased BRD4 recruitment on promoters was associated with increased and prolonged p65 (RelA) binding after the LPS stimulation. The p65 binding resulted in quicker and sustained transcription bursts from the promoters; this mechanism increased total amounts of hIL-6 and IL-10 in tissue culture. Pretreatment with the BRD4 inhibitor, OTX015, eliminated the enhanced inflammatory cytokine production. These findings suggest that persistent vIL-6 exposure may establish a chromatin landscape favorable for the reactivation of inflammatory responses in monocytes. This epigenetic memory may explain the greater risk of chronic inflammatory disease development in KSHV-infected individuals.

2023-08-08 | GSE232843 | GEO

Prolonged Kaposi's Sarcoma-associated Herpesvirus vIL-6 Exposure Enhances Inflammatory Responses by Epigenetic Reprogramming (CUT&RUN)

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Prolonged Kaposi's Sarcoma-associated Herpesvirus vIL-6 Exposure Enhances Inflammatory Responses by Epigenetic Reprogramming (SLAM-seq)

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Prolonged Kaposi's Sarcoma-associated Herpesvirus vIL-6 Exposure Enhances Inflammatory Responses by Epigenetic Reprogramming (SLAM-seq)

Project description:Prolonged Kaposi's Sarcoma-associated Herpesvirus vIL-6 Exposure Enhances Inflammatory Responses by Epigenetic Reprogramming (SLAM-seq)

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Prolonged Kaposi's Sarcoma-associated Herpesvirus vIL-6 Exposure Enhances Inflammatory Responses by Epigenetic Reprogramming (CUT&RUN)

Project description:Prolonged Kaposi's Sarcoma-associated Herpesvirus vIL-6 Exposure Enhances Inflammatory Responses by Epigenetic Reprogramming (CUT&RUN)

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Project description:Transfection of a Kaposi's sarcoma (KS) herpesvirus (KSHV) Bacterial Artificial Chromosome (KSHVBac36) into mouse bone marrow endothelial lineage cells generated a cell (mECK36) that induced KS-like tumors in mice. mECK36 formed KSHV-harboring vascularized spindle-cell sarcomas that were LANA+ and displayed a KSHV and host transcriptomes reminiscent of KS tumors. Keywords: Cell type comparison

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