Unknown,Transcriptomics,Genomics,Proteomics

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Tiled Array Experiment of Murine Gammaherpesvirus 68 Transcripts In Newly Infected Fibroblasts

ABSTRACT: Murine NIH3T3 fibroblasts were infected with MHV68 and RNA expression was examined over an 18 hour timecourse experiment. Study includes 8 samples isolated at 0, 2, 4, 6, 8, 10, 12, and 18 hours after infection of NIH3T3 fibroblasts with murine gammaherpesvirus 68 at a multiplicity of infection of 10.0.

ORGANISM(S): Mus musculus

SUBMITTER: Jizu Zhi

PROVIDER: E-GEOD-35863 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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Publications

Tiled microarray identification of novel viral transcript structures and distinct transcriptional profiles during two modes of productive murine gammaherpesvirus 68 infection.

Cheng Benson Yee Hin BY Zhi Jizu J Santana Alexis A Khan Sohail S Salinas Eduardo E Forrest J Craig JC Zheng Yueting Y Jaggi Shirin S Leatherwood Janet J Krug Laurie T LT

Journal of virology 20120208 8

We applied a custom tiled microarray to examine murine gammaherpesvirus 68 (MHV68) polyadenylated transcript expression in a time course of de novo infection of fibroblast cells and following phorbol ester-mediated reactivation from a latently infected B cell line. During de novo infection, all open reading frames (ORFs) were transcribed and clustered into four major temporal groups that were overlapping yet distinct from clusters based on the phorbol ester-stimulated B cell reactivation time co ...[more]

PMID: 22318145

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Project description:MicroRNA (miRNA) and endogenous siRNA (endo-siRNA) are two essential classes of small noncoding RNAs (sncRNAs) in eukaryotic organisms. The class of miRNA is diverse and there exist noncanonical miRNAs that bypass the canonical miRNA biogenesis pathway. In order to identify noncanonical miRNAs and endo-siRNAs responding to virus infection and study their potential function, we sequenced small-RNA species from cells lytically infected with murine gammaherpesvirus 68. In addition to 3 novel canonical miRNAs in mouse, two antisense miRNAs in virus and 25 novel noncanonical miRNAs, including miRNAs derived from tRNAs, snoRNAs and introns, in the host were identified. These noncanonical miRNAs exhibited features distinct from canonical miRNAs in the lengths and structures of miRNA hairpins as well as base pairings and first nucleotide preference. Many of the novel miRNAs are conserved in mammals. In addition to several known murine endo-siRNAs detected by the sequencing profiling, a novel locus in the mouse genome was identified to give rise to endo-siRNAs. This novel endo-siRNA locus is comprised of two tandem inverted B4 short interspersed nuclear elements (SINEs). Unexpectedly, the SINE-derived endo-siRNAs were found in a variety of sequencing data as well as virus-infected cells. Moreover, a murine miRNA was up-regulated more than 35 fold in infected than in mock-treated cells. The putative target genes of the viral and the up-regulated murine miRNAs were potentially involved in processes of gene transcription and protein phosphorylation and localized to membranes, suggesting their role in manipulating the host basal immune system during lytic infection. Our results extended the number of noncanonical miRNAs in mammals and shed new lights on their potential functions of lytic infection of MHV68. Mouse NIH 3T12 cells infectd with MHV68 (3 samples) and mock-treated (2 samples) were examined. Noncanonical microRNAs and endogenous siRNAs discovery in lytic infection of murine gammaherpesvirus MHV68 (NC_001826.2).

Dataset Information

Tiled Array Experiment of Murine Gammaherpesvirus 68 Transcripts In Newly Infected Fibroblasts

Publications

Tiled microarray identification of novel viral transcript structures and distinct transcriptional profiles during two modes of productive murine gammaherpesvirus 68 infection.

Similar Datasets

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