Project description:To investigate whether and what miRNAs expression might be regulated by VSV (vesicular stomatitis virus?) challenge, we analyzed the miRNA expression profile of mouse primary peritoneal macrophages infected with VSV by using an array-based miRNA profiling. After the infection of VSV at MOI 10 for 48 h, the array revealed that many miRNAs were up-regulated in macrophages?
Project description:Comparison of the transcriptiomic profile using microarray analysis betwween primary porcine macrophages infected with recombinant vesicular stomatitis viruses
Project description:Viral infection is commonly associated with virus-driven hijacking of host proteins. We describe a novel mechanism by which influenza virus impacts host cells through the interaction of influenza NS1 protein with the infected cell epigenome. We show that the NS1 protein of influenza A H3N2 targets the transcription elongation PAF1 complex (hPAF1C). We demonstrate that binding of NS1 to hPAF1C results in suppression of hPAF1C-mediated transcriptional elongation. More importantly,in the following data sets, we show that hPAF1 plays a crucial role in the antiviral response. Loss of hPAF1C reduces antiviral gene expression and reduces inducible transcription of target genes after stimulation with viral RNA analogue poly(I:C), vesicular stomatitis virus (VSV), exogenous recombinant IFN(beta) and influenza virus (H1N1). This study underscores the importance of hPAF1C in controlling inducible antiviral gene expression. Untreated (no siRNA), control siRNA-treated and hPAF1 siRNA-treated A549 cells were stimulated with A/Puerto Rico/8/1934 influenza virus (H1N1) or vesicular stomatitis virus (VSV). Total RNA was isolated with the Qiagen RNeasy mini kit. 200ng of total RNA per sample was used to prepare biotin-labeled RNA using MessageAmp™ Premier RNA Amplification Kit (Applied Biosystems) and hybridized to HumanHT-12 v4 Expression BeadChips (Illumina). Data analysis was performed using the GeneSpring GX11.0 software (Agilent Technologies). 3 biological replicates per condition
Project description:Viral infection is commonly associated with virus-driven hijacking of host proteins. We describe a novel mechanism by which influenza virus impacts host cells through the interaction of influenza NS1 protein with the infected cell epigenome. We show that the NS1 protein of influenza A H3N2 targets the transcription elongation PAF1 complex (hPAF1C). We demonstrate that binding of NS1 to hPAF1C results in suppression of hPAF1C-mediated transcriptional elongation. More importantly,in the following data sets, we show that hPAF1 plays a crucial role in the antiviral response. Loss of hPAF1C reduces antiviral gene expression and reduces inducible transcription of target genes after stimulation with viral RNA analogue poly(I:C), vesicular stomatitis virus (VSV), exogenous recombinant IFN(beta) and influenza virus (H1N1). This study underscores the importance of hPAF1C in controlling inducible antiviral gene expression. Untreated (no siRNA), control siRNA-treated and hPAF1 siRNA-treated A549 cells were stimulated with A/Puerto Rico/8/1934 influenza virus (H1N1) or vesicular stomatitis virus (VSV). Total RNA was isolated with the Qiagen RNeasy mini kit. 200ng of total RNA per sample was used to prepare biotin-labeled RNA using MessageAmp™ Premier RNA Amplification Kit (Applied Biosystems) and hybridized to HumanHT-12 v4 Expression BeadChips (Illumina). Data analysis was performed using the GeneSpring GX11.0 software (Agilent Technologies).
Project description:Purpose: RNA-seq analysis of three memory OT-I cell subsets (from a Klrg1-Cre fate reporter mouse model) isolated from the spleen of C57BL/6 mice infected with vesicular stomatitis virus. The hypothesis tested in the present study was that KLRG1+ effector CD8 T lymphocytes differentiate into KLRG1- memory CD8 T lymphocytes and provide long-lasting immunity against infectious diseases and malignancies. Methods: Total RNA was obtained from FACS-purified OT-I cell subsets isolated from spleen 70 days post infection with ovalbumin-expressing vesicular stomatitis virus (VSV-OVA) (experiment 3). Results: Using RNA-seq technology, we performed genome-wide transcriptional profiling of three memory OT-I cells (KLRG1+ Reporter+, KLRG1- Reporter+ (exKLRG1) and KLRG1- Reporter-) and identified 36 genes differentially expressed (> 1.5-fold) between exKLRG1 and KLRG1- Reporter- memory OT-I cells, and 132 differentially expressed genes between exKLRG1 and KLRG1+ Reporter+ memory OT-I cells. We then confirmed the expression of 15 genes/molecules by qRT-PCR and/or flow cytometry. Conclusions: Our study represents the first fate mapping analysis of KLRG1+ effector OT-I cells, demonstrates that KLRG1+ effector OT-I cells differentiate into all memory T cell lineages thereby promoting protective immunity. RNA-seq also identified CX3CR1 as a marker of circulating exKLRG1 early memory OT-I cells.
Project description:Benzo(a)pyrene (Bap), a key component of cigarette smoke (CS), is a pollutant and widely present in our daily life. The roles of Bap on viral replication have been amply discussed and controversial. In our present study, we investigated the effect and mechanism of Bap on the replication of vesicular stomatitis virus (VSV) and respiratory syncytial virus (RSV) in vitro. HeLa cells were pre-exposed to Bap at 10 μM for 48 h and then infected with VSV (MOI=1) for 24 h. RNA sequencing analysis was conducted to identify Bap-dysregulated genes and qPCR analysis was used to identify the result. Chronic exposed to Bap significantly inhibited the replication of VSV and RSV in vitro and in vivo.
Project description:Heterogeneous nuclear ribonucleoproteins (hnRNPs) are involved in many processes in RNA metabolism. In addition to their functions in the nucleus, hnRNPs can function in the replication of RNA viruses in the cytoplasm. In vesicular stomatitis virus (VSV)-infected cells, several hnRNPs relocalize from the nucleus to the cytoplasm. This raises the question of whether these hnRNPs are relocalized together with their host nuclear RNAs or whether they associate with new RNAs in the cytoplasm. hnRNP A1, hnRNP C1/C2, and hnRNP K were immunoprecipitated from mock- or VSV-infected cells, and RNAs were analyzed by high content RNA sequencing. Each hnRNP displayed a loss of interaction with cellular transcripts in favor of viral mRNAs. hnRNP A1 was preferentially associated with VSV phosphoprotein (P) mRNA; hnRNP C1/C2 was preferentially associated with VSV glycoprotein (G) mRNA, and hnRNP K bound viral transcripts in rank of abundance.