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Porcine ZC3H11A is essential for the proliferation of pseudorabies virus (PRV) and porcine circovirus 2 (PCV2) by mediating mRNA export

ABSTRACT: Purpose:ZC3H11A has been reported to play a role in RNA transport. The purpose of this study was to detect the differentially expressed genes after ZC3H11A knockout. Methods: RNA sequencing was performed on PK-15 cell line (WT) and ZC3H11A-/- using Illumina platform, and three repeated RNA sequencing results were obtained. Results: Using an optimized data analysis workflow,different expression genes were obtained and RNA transport pathway was enriched through KEGG pathway analysis. Conclusions: In this study, we observed that ZC3H11A interacted with TRanscription and the EXport complex (TREX) and played an important role in mRNA export.

ORGANISM(S): Sus scrofa

PROVIDER: GSE196025 | GEO | 2022/02/06

REPOSITORIES: GEO

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Porcine ZC3H11A is essential for the proliferation of pseudorabies virus (PRV) and porcine circovirus 2 (PCV2) by mediating mRNA export

Project description:Porcine ZC3H11A is essential for the proliferation of pseudorabies virus (PRV) and porcine circovirus 2 (PCV2) by mediating mRNA export

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Ablation of ZC3H11A causes early embryonic lethality and dysregulation of metabolic processes

Project description:In human somatic cells, ZC3H11A has been recently characterized as an RNA-export protein that functions through its interaction with TREX complex proteins. In order to identify its interacting partners in embryonic cells, and to investigate if ZC3H11A maintains its association with the TREX complex in mouse embryonic stem cells (mESCs), we have performed co-immunoprecipitations (co-IPs) using anti-ZC3H11A, anti-THOC2 and anti-IgG antibodies followed by mass spectrometry (MS) analyses. Statistical analyses of detected MS intensities from the biological replicates (n=4) have revealed a number of proteins with statistically significant interaction with ZC3H11A and THOC2. Results in xlsx format contain the log-fold change in protein intensities in the ZC3H11A co-IP relative to the IgG co-IP and is presented along with the adjusted P-values.

2023-04-27 | MSV000091811 | MassIVE

Effect of porcine circovirus type 2 (PCV2) vaccination on PCV2-viremic piglets after experimental PCV2 challenge.

Project description:The objective of this study was to evaluate the effect of porcine circovirus type 2 (PCV2) vaccines on PCV2-viremic and -seropositive piglets born from naturally PCV2-infected sows against postnatal PCV2 challenge. The experimental design was aimed at mimicking commercial swine rearing conditions to evaluate the response of the PCV2 vaccine on PCV2-viremic and -seropositive piglets after experimental PCV2 challenge. PCV2a (or 2b)-viremic piglets received a PCV2 vaccine at 21 days of age followed by a PCV2b (or 2a) challenge at 49 days of age (28 days post vaccination). The PCV2 vaccines elicited a high level of humoral (as measured by immunoperoxidase monolayer assay and neutralizing antibody titers) and cellular (as measured by the frequency of PCV2-specific interferon-?-secreting cells) immune response in the PCV2-viremic piglets after vaccination even in the presence of maternally derived antibodies (MDA). The initial infection of PCV2 in the pigs was not affected by PCV2 vaccination, however the challenging PCV2 was reduced by PCV2 vaccination on PCV2-viremic pigs. The results from this study demonstrate that the PCV2 vaccine used in this study is effective at reducing PCV2 viremia and lymphoid PCV2 DNA, even for PCV2-viremic pigs with passively acquired MDA at the time of vaccination.

| S-EPMC3923389 | biostudies-literature

Porcine circovirus 2 strain:PCV2

Project description:Porcine circovirus 2 sequences from Ukraine

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The nuclear pore-associated TREX-2 complex employs the Mediator Med31 submodule as a docking site to regulate gene expression

Project description:Nuclear pore complexes (NPCs) influence gene expression besides their established function in nuclear transport. The TREX-2 complex localizes to the NPC basket and affects gene-NPC interactions, transcription and mRNA export. How TREX-2 regulates the gene expression machinery is unknown. Here, we show that TREX-2 interacts with the Mediator complex, an essential regulator of RNA Polymerase (Pol) II. Structural and biochemical studies identify a conserved region on TREX-2, which directly binds the Mediator Med31/Med7N submodule. TREX-2 regulates assembly of Mediator with its Cdk8 kinase and is required for recruitment and site-specific phosphorylation of Pol II. Transcriptome and phenotypic profiling confirm that TREX-2 and Med31 are functionally interdependent. TREX-2 additionally uses its Mediator-interacting surface to regulate mRNA export suggesting a mechanism for coupling transcription initiation and early steps of mRNA processing at the Mediator level. In sum, we provide insight into how NPC-associated adaptor complexes can access the core transcription machinery. RNAseq was performed from WT, sac3∆, cdk8∆ and Sac3 R288D mutant cells. For each strain triplicates were analyzed. WT strain was sac3∆ transformed with pRS315 SAC3 WT

2015-08-27 | E-GEOD-67431 | biostudies-arrayexpress

Identification and genotyping of porcine circovirus type II (PCV2) in Mexico.

Project description:Porcine circovirus type 2 (PCV2), family Circoviridae, genus Circovirus infection in domestic pig has been associated with several pathological conditions being the most important of them the postweaning multisystemic wasting syndrome. Many studies have demonstrated the existence of three PCV2 genotypes (a, b, and c) and recently PCV3. Until now, these genotypes or subgenotypes have not been described in Mexico. We found genetic changes in ORF2 from nine strains of PCV2 obtained from samples of Jalisco, Veracruz, Estado de México, Hidalgo and Sonora states of Mexico. Our results shown the presence of two genotypes (PCV2a and PCV2b) as well as, the presence and differences between the reported subgenotypes. The subgenotype PCV2b (1A/1B, 1A) has a higher prevalence (87.5%) in comparison with PCV2a (2C) (12.5%).

| S-EPMC6111953 | biostudies-literature

The nuclear pore-associated TREX-2 complex employs the Mediator Med31 submodule as a docking site to regulate gene expression

2015-08-27 | GSE67431 | GEO

A Host Factor GPNMB Restricts Porcine Circovirus Type 2 (PCV2) Replication and Interacts With PCV2 ORF5 Protein.

Project description:Porcine circovirus type 2 (PCV2) is the infectious agent of postweaning multisystemic wasting syndrome (PMWS). The recently discovered open reading frame 5 (ORF5) in PCV2 genome encodes a non-structural protein. Previous study revealed that ORF5 protein inhibits cell proliferation and may interact with host transmembrane glycoprotein NMB (GPNMB). However, whether the GPNMB affects PCV2 replication and the underlying molecular mechanisms are still unknown. In this study, the transcriptome maps of PCV2-infected and ORF5-transfected porcine alveolar macrophages 3D4/2 (PAM) cells were profiled. The GPNMB gene was down-regulated in PCV2-infected and ORF5-transfected PAMs. By using glutathione S-transferase (GST) pull-down, co-immunoprecipitation (co-IP) and confocal microscopy approaches, we convincingly showed that PCV2 ORF5 protein interacts with GPNMB. Furthermore, by utilizing lentivirus mediated overexpression or knockdown approach, we showed that the cellular GPNMB significantly inhibits PCV2 replication and ORF5 expression. Moreover, GPNMB overexpressing leads to an increased Cyclin A expression and a reduced S phase, whereas GPNMB knockdown causes a decreased Cyclin A expression and a prolonged S phase. In conclusion, we identified a novel host factor GPNMB that interacts with PCV2 ORF5 protein and restricts PCV2 replication.

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Infection of porcine circovirus 2 (PCV2) in intestinal porcine epithelial cell line (IPEC-J2) and interaction between PCV2 and IPEC-J2 microfilaments.

Project description:BackgroundPorcine circovirus-associated disease (PCVAD) is caused by a small pathogenic DNA virus, Porcine circovirus type 2 (PCV2), and is responsible for severe economic losses. PCV2-associated enteritis appears to be a distinct clinical manifestation of PCV2. Most studies of swine enteritis have been performed in animal infection models, but none have been conducted in vitro using cell lines of porcine intestinal origin. An in vitro system would be particularly useful for investigating microfilaments, which are likely to be involved in every stage of the viral lifecycle.MethodsWe confirmed that PCV2 infects the intestinal porcine epithelial cell line IPEC-J2 by means of indirect immunofluorescence, transmission electron microscopy, flow cytometry and qRT-PCR. PCV2 influence on microfilaments in IPEC-J2 cells was detected by fluorescence microscopy and flow cytometry. We used Cytochalasin D or Cucurbitacin E to reorganize microfilaments, and observed changes in PCV2 invasion, replication and release in IPEC-J2 cells by qRT-PCR.ResultsPCV2 infection changes the ultrastructure of IPEC-J2 cells. PCV2 copy number in IPEC-J2 cells shows a rising trend as infection proceeds. Microfilaments are polymerized at 1 h p.i., but densely packed actin stress fibres are disrupted and total F-actin increases at 24, 48 and 72 h p.i. After Cytochalasin D treatment, invasion of PCV2 is suppressed, while invasion is facilitated by Cucurbitacin E. The microfilament drugs have opposite effects on viral release.ConclusionPCV2 infects and proliferates in IPEC-J2 cells, demonstrating that IPEC-J2 cells can serve as a cell intestinal infection model for PCV2 pathogenesis. Furthermore, PCV2 rearranges IPEC-J2 microfilaments and increases the quantity of F-actin. Actin polymerization may facilitate the invasion of PCV2 in IPEC-J2 cells and the dissolution of cortical actin may promote PCV2 egress.

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Porcine circovirus 2 (PCV2) population study in experimentally infected pigs developing PCV2-systemic disease or a subclinical infection.

Project description:Porcine circovirus 2 (PCV2) is a single stranded DNA virus with one of the highest mutation rates among DNA viruses. This ability allows it to generate a cloud of mutants constantly providing new opportunities to adapt and evade the immune system. This pig pathogen is associated to many diseases, globally called porcine circovirus diseases (PCVD) and has been a threat to pig industry since its discovery in the early 90's. Although 11 ORFs have been predicted from its genome, only two main proteins have been deeply characterized, i.e. Rep and Cap. The structural Cap protein possesses the majority of the epitopic determinants of this non-enveloped virus. The evolution of PCV2 is affected by both natural and vaccine-induced immune responses, which enhances the genetic variability, especially in the most immunogenic Cap region. Intra-host variability has been also demonstrated in infected animals where long-lasting infections can take place. However, the association between this intra-host variability and pathogenesis has never been studied for this virus. Here, the within-host PCV2 variability was monitored over time by next generation sequencing during an experimental infection, demonstrating the presence of large heterogeneity. Remarkably, the level of quasispecies diversity, affecting particularly the Cap coding region, was statistically different depending on viremia levels and clinical signs detected after infection. Moreover, we proved the existence of hyper mutant subjects harboring a remarkably higher number of genetic variants. Altogether, these results suggest an interaction between genetic diversity, host immune system and disease severity.

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