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Wide-spread disruption of transcription termination in HSV-1 infection: Next generation sequencing of total and newly transcribed (4sU-RNA) RNA from different virus strains and mutant viruses

ABSTRACT: Wide-spread disruption of transcription termination in HSV-1 infection: Next generation sequencing of total and newly transcribed (4sU-RNA) RNA from different virus strains and mutant viruses

PROVIDER: PRJNA637636 | ENA |

REPOSITORIES: ENA

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Wide-spread disruption of transcription termination in HSV-1 infection: Next generation sequencing of total and newly transcribed (4sU-RNA) RNA

Project description:Primary human foreskin fibroblasts (HFF) were infected with wild-type simplex virus 1 (HSV-1) strain 17 at a multiplicity of infection (MOI) of 10. Newly transcribed RNA was labelled by adding 500µM 4-thiouridine (4sU) to the cell culture media for 1h. Total cellular RNA was isolated using Trizol. Newly transcribed RNA was purified following the protocol described in Raedle et al. JoVE 2013. Newly transcribed RNA was labelled in one hour intervals during the first eight hours of HSV-1 infection. All nine 4sU-RNA samples as well as total cellular RNA of every second hour of infection were sent for sequencing. Two independent biological replicates were analysed.

2015-05-26 | E-GEOD-59717 | biostudies-arrayexpress

Wide-spread disruption of transcription termination in HSV-1 infection: Next generation sequencing of total and newly transcribed (4sU-RNA) RNA from different virus strains and mutant viruses

Project description:Primary human foreskin fibroblasts (HFF) were infected with the indicated HSV-1 strains and mutants thereof at a multiplicity of infection (MOI) of 10. Newly transcribed RNA was labelled by adding 500µM 4-thiouridine (4sU) to the cell culture media for 1h. Total cellular RNA was isolated using Trizol. Newly transcribed RNA was purified following the protocol described in Raedle et al. JoVE 2013.

2020-06-08 | GSE151912 | GEO

Wide-spread disruption of transcription termination in HSV-1 infection: Next generation sequencing of total and newly transcribed (4sU-RNA) RNA

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Total and newly transcribed (4sU-RNA) RNA of primary human fibroblasts infected with the vhs-null mutant of HSV-1

Project description:Primary human foreskin fibroblasts (HFF) were infected with vhs-null mutant of HSV-1 strain 17 at a multiplicity of infection (MOI) of 10. Newly transcribed RNA was labelled by adding 500µM 4-thiouridine (4sU) to the cell culture media for 1h. Total cellular RNA was isolated using Trizol. Newly transcribed RNA was purified following the protocol described in Raedle et al. JoVE 2013.

2020-10-26 | GSE129715 | GEO

Total and newly transcribed (4sU-RNA) RNA of primary human fibroblasts infected with the vhs-null mutant of HSV-1

Project description:Total and newly transcribed (4sU-RNA) RNA of primary human fibroblasts infected with the vhs-null mutant of HSV-1

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4sU metabolic labeled transcripts in 65 YRI LCLs

Project description:Noncoding variants play a central role in the genetics of complex traits, but we still lack a full description of the main molecular pathways through which they act. Here we used molecular data to quantify the contribution of cis-acting genetic effects at each major stage of gene regulation from chromatin to proteins, within a population sample of Yoruba lymphoblastoid cell lines (LCLs). We performed 4sU metabolic labeled transcripts in 65 YRI LCLs to identify genetic variants that affect transcription rates. As expected, we found an important contribution of genetic variation via chromatin, contributing â¼65% of eQTLs (expression Quantitative Trait Loci). The remaining eQTLs, which are not asso- ciated with chromatin-level variation, are highly enriched in transcribed regions, and hence may affect expression through co- or post-transcriptional processes. International HapMap lymphoblastoid cell lines (LCLs) derived from YRI (Yoruba in Ibadan, Nigeria); We adapted the 4sU labelling method from (PMID 21516085). Briefly, cell cultures were grown to log phase in volumes sufficient to yield about 300 ng of 4sU-labeled RNA. Cells were incubated with 4sU for the required length of time (0, 30, or 60 minutes), then washed, pelleted, and frozen. Total RNA was extracted, and 4sU-labeled RNA was separated from total RNA using a bead-based biotin-streptavidin purification protocol. We sequenced metabolic labeled transcripts in 65 YRI LCLs 30 minutes and 60 minutes after incubation.

2016-03-29 | E-GEOD-75220 | biostudies-arrayexpress

4sU-seq of HFF exposed to salt and heat stress

Project description:Primary human foreskin fibroblasts (HFF) were exposed to either salt stress (80mM KCl) or heat stress (44ºC). Newly transcribed RNA was labelled by adding 500µM 4-thiouridine (4sU) to the cell culture media for 1h. Total cellular RNA was isolated using Trizol. Newly transcribed RNA was purified following the protocol described in Raedle et al. JoVE 2013.

2018-03-08 | GSE100469 | GEO

Capturing the Interactome of Newly Transcribed RNA

Project description:Capturing the Interactome of Newly Transcribed RNA

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Ultra short and progressive 4sU-tagging reveals key characteristics of RNA processing at nucleotide resolution

Project description:RNA synthesis and decay rates determine the steady-state levels of cellular RNAs. Metabolic tagging of newly transcribed RNA by 4-thiouridine (4sU) can reveal the relative contributions of RNA synthesis and decay rates. The kinetics of RNA processing, however, so far remained unresolved. Here, we show that ultra-short 4sU-tagging not only provides snap-shot pictures of eukaryotic gene expression but, when combined with progressive 4sU-tagging and RNA-seq, reveals global RNA processing kinetics at nucleotide resolution. Using this method, we identified classes of rapidly and slowly spliced/degraded introns. Interestingly, each class of splicing kinetics was characterized by a distinct association with intron length, gene length and splice site strength. For a large group of introns, we also observed long lasting retention in the primary transcript, but efficient secondary splicing or degradation at later time points. Finally, we show that processing of most, but not all small nucleolar (sno)RNA-containing introns is remarkably inefficient with the majority of introns being spliced and degraded rather than processed into mature snoRNAs. In summary, our study yields unparalleled insights into the kinetics of RNA processing and provides the tools to study molecular mechanisms of RNA processing and their contribution to the regulation of gene expression. 4sU-tagging was performed in human DG75 B-cells by adding 500 uM 4sU to cell culture medium for 5, 10, 15, 20 or 60 min. Following isolation of total cellular RNA, this was separated into nascent and untagged, pre-existing RNA. Nascent RNA as well as total and untagged RNA from 60 min 4sU-tagging were subjected to SOLiD sequencing (SOLiD II) obtaining 35 nt reads.

2012-04-25 | E-GEOD-31653 | biostudies-arrayexpress

Cellular interactome of HSV-1 pUL21

Project description:The herpes simplex virus (HSV)-1 protein pUL21 is essential for efficient virus replication and dissemination. While pUL21 has been shown to promote multiple steps of virus assembly and spread, the molecular basis of its function remained unclear. Here we identify that pUL21 is a virus-encoded adaptor of protein phosphatase 1 (PP1). pUL21 directs the dephosphorylation of cellular and virus proteins, including components of the viral nuclear egress complex, and we define a conserved non-canonical linear motif in pUL21 that is essential for PP1 recruitment. In vitro evolution experiments reveal that pUL21 directly antagonises the activity of the virus-encoded kinase pUS3, with growth and spread of pUL21 PP1-binding mutant viruses being restored when pUS3 activity is disrupted. This study shows that virus-directed phosphatase activity is essential for efficient herpesvirus assembly and spread, highlighting the fine balance between kinase and phosphatase activity required for optimal virus replication.

2021-08-05 | PXD027257 | Pride

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