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Viral Discovery in Nepalese Patients with non-Japanese Encephalitis Virus encephalitis

ABSTRACT: Gemykibivirus detection in acute encephalitis patients from Nepal

PROVIDER: PRJEB72279 | ENA |

REPOSITORIES: ENA

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Project description:Japanese encephalitis (JE) is an acute encephalitis syndrome contributed to Japanese encephalitis virus (JEV) infection. It is the chief cause of viral encephalitis in Asian. In recent years, association of JEV infection with neurological problems such as Guillain-Barré syndrome had reported. Nevertheless, its potential pathogenic mechanism has never been reported. Therefore, it is urgent to explore the relationship between peripheral nerve injury and JEV infection. Here, we use the liquid chromatography-tandem mass spectrometry (LC-MS/MS) technique to make out the protein expression levels of mice sciatic nerve between JEV infection group and the sham group. In general, 4303 proteins were identified by MS, and 187 differentially expressed proteins were found. There were 105 proteins up-regulated in the injured sciatic nerve, and 82 proteins were down-regulated. Functional enrichment analysis of differentially expressed proteins showed that the up-regulated proteins were mainly related to immune regulatory response, and the down-regulated proteins were related to ribosomal structural components and translation.

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Ribosome profiling of Japanese encephalitis virus infected Neuro2a cells

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Project description:Japanese encephalitis virus (JEV) is a mosquito-borne flavivirus and causes acute encephalitis with high mortality rate in humans. Despite the demonstration of difference in neuroinvasiveness between JEV strains, little is known about host gene response upon infection of virulent and attenuated JEV strains. To understand the pathogenesis mechanism of JEV infection, we performed a comparative genome-wide microarray analysis (Affymetrix, mouse genome 430 2.0 with 45101 probe sets) of genes expressed in the mice brains three days post intracerebrally inoculated with JEV strains of different neurovirulence. We found that the virulent strain of JEV (RP-9) tended to affect the host gene expression more profoundly than the attenuated one (RP-2ms), as 961 vs. 665 and 655 vs. 509 genes were at least two-fold upregulated and downregulated by RP-9 and RP-2ms, respectively. In order to understand the host defense response against JEV, we further analyzed the microarray data with special focus on immune response. The expression levels of selected genes were further verified by quantitative RT-PCR at 1-, 3- and 5-day post JEV infection. The differentially regulated genes reported here likely contribute to the neurovirulent phenotype by modulating the host immunity, viral replication and/or cytotoxicity. Keywords: day3, virus (1 x 10^4 PFU), intracerebrally (ic) inoculated, brain total RNA

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