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Host transcriptome determinants for African Swine Fever (ASF)

ABSTRACT: Host transcriptome determinants for African Swine Fever (ASF)

PROVIDER: PRJEB59589 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	ERR10850400_1.fastq.gz	Fastqsanger.gz
	ERR10850400_2.fastq.gz	Fastqsanger.gz
	ERR10850401_1.fastq.gz	Fastqsanger.gz
	ERR10850401_2.fastq.gz	Fastqsanger.gz
	ERR10850402_1.fastq.gz	Fastqsanger.gz

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Host transcriptome determinants for African Swine Fever (ASF)

Project description:In field studies and carefully controlled artificial infections, there is host variation in response to ASF infections. To better understand the mechanisms underlying this diversity and distinguish between resilient and susceptible pigs to African Swine Fever (ASF), the differentially expressed genes (DEGs) were studied between the recovered versus non-recovered pigs before and after an infection challenge and also among non-recovered animals over time. In total, 17 Babraham pigs were sampled. Twelve animals were randomly immunized with low virulent ASFV isolate, and the others received the sham vaccine. All animals were then challenged with the virulent ASFV isolate 18 days after the immunization. Except for five animals, all showed clinical signs and dead between 4 and 6 days later. RNA sequencing was done for whole blood samples collected pre-infection, one day, and one week post-infection.

2023-02-17 | E-MTAB-12608 | biostudies-arrayexpress

EP152R-Mediated Endoplasmic Reticulum Stress Contributes to African Swine Fever Virus Infection via the PERK-eIF2α Pathway

Project description:African swine fever virus (ASFV) is a large, icosahedral, double-stranded DNA virus in the Asfarviridae family and the causative agent of African swine fever (ASF). ASFV causes a hemorrhagic fever with high mortality rates in domestic and wild pigs. ASFV contains an open reading frame named EP152R, previous research has shown that EP152R is an essential gene for virusrescue in swine macrophages. However, the detailed functions of ASFV EP152R remain elusive. Herein, we demonstrate that EP152R, a membrane protein located in the endoplasmic reticulum (ER), induces ER stress and swelling, triggering the PERK/eIF2α pathway and broadly inhibiting host protein synthesis in vitro. Additionally, EP152R strongly promotes immune evasion, reduces cell proliferation, and alters cellular metabolism. These results suggest that ASFV EP152R plays a critical role in the intracellular environment, facilitating viral replication. Furthermore, virus-level experiments have shown that the knockdown of EP152R or PERK inhibitors efficiently affects viral replication by decreasing viral gene expression. In summary, these findings reveal a series of novel functions of ASFV EP152R and have important implications for understanding host-pathogen interactions.

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Project description:African swine fever (ASF) is the most dangerous disease of pigs and causes enormous economic losses in the global pig industry. However, the mechanism of ASF virus (ASFV) infection is unclear. Hence, we wanted to understand the host response mechanism upon ASFV infection. We analyzed the differentially expressed proteins (DEPs) between ASFV-infected and un-infected serum samples using quantitative proteomics. Setting the p-value < 0.05 and |log2 (fold change)| > 1.5, we identified 173 DEPs, including 57 upregulated and 116 downregulated proteins, which belonged to various biological processes and pathways according to the Gene Ontology and Kyoto Encyclopedia of Genes and Genomes pathway enrichment analyses. The enriched pathways include the immune system, metabolism, and inflammation.

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