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Human betaherpesvirus 6B

ABSTRACT: Small RNA deep-sequencing identifies microRNAs and other small non-coding RNAs from human herpesvirus 6 (HHV-6B)

PROVIDER: PRJNA149833 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR387909.fastq.gz	Fastqsanger.gz
	SRR387910.fastq.gz	Fastqsanger.gz

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Small RNA deep-sequencing identifies microRNAs and other small non-coding RNAs from human herpesvirus 6 (HHV-6B)

Project description:Roseolovirus, or human herpesvirus 6 (HHV-6) is a ubiquitous human pathogen infecting over 95% of the population by the age of two years. As with other herpesviruses, reactivation of HHV-6 can present with severe complications in immunocompromised individuals. Recent studies have highlighted the importance of herpesvirus-derived micro (mi)RNAs in modulating both cellular and viral gene expression. An initial report, which computed the likelihood of various viruses to encode for miRNAs, did not predict HHV-6 miRNAs. To experimentally screen for small HHV-6 encoded RNAs, we conducted large-scale sequencing of Sup-T-1 cells lytically infected with a laboratory strain of HHV-6B. This revealed an abundant 60-65 nucleotide RNA of unknown function derived from the lytic origin of replication (OriLyt) that gave rise to smaller RNA species of 18-19 nucleotides in length. In addition, we identified four pre-miRNAs, whose mature forms accumulated in Argonaute 2. In contrast to other beta-herpesviruses, HHV-6B miRNAs are expressed from direct repeat regions (DRL and DRR) located at either side of the genome. All miRNAs are conserved in the closely related HHV-6A variant, and one of them is a seed ortholog of the human miR-582-5p. Similar to alpha-herpesvirus miRNAs, they are expressed antisense to immediate early ORFs and thus have the potential to regulate key viral regulators. Small RNA sequencing from total RNA or Ago2 associated small RNAs extracted from HHV-6 infected Sup-T-1 cells

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Small RNA deep-sequencing identifies microRNAs and other small non-coding RNAs from human herpesvirus 6 (HHV-6B)

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Human herpesvirus 6B (HHV-6B) detection and genome-wide host expression profiles implicate HHV-6B as a pulmonary pathogen after hematopoietic cell transplantation

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Project description:Purpose: The goal of this study is to determine the expression profile of HHV-6B in whole blood samples from transplant patients with HHV-6B genomes detected in plasma Methods: Viral mRNA profiles in whole blood samples of different transplant patients were generated by deep sequencing using Illumina Hiseq. The sequence reads that passed quality filters were analyzed at the transcript isoform level with two methods: Burrows–Wheeler Aligner (BWA) followed by ANOVA (ANOVA) and TopHat followed by Cufflinks. qRT–PCR validation for U38 expression was performed using TaqMan Results: Hierarchical clustering uncovered systematic detection of U38 mRNA transcripts in whole blood samples from all patients with a detectable HHV-6B reactivation in their plasma Conclusions: Our study represents the first detailed analysis of viral transcriptomes associated with HHV-6B reactivation in whole blood samples generated by RNA-seq technology. Our results show that NGS offers a comprehensive and more accurate qualitative evaluation of mRNA content within a whole blood sample.

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Transcriptional profiling of HHV-6 infeceted T cells

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