学術雑誌論文

学術雑誌論文

PLoS ONE. 2024, 19(10), p. e0312098

The SARS-CoV-2 ORF6 protein inhibits nuclear export of mRNA and spliceosomal U snRNA

Taniguchi, Ichiro

Public Library of Science

英語

2024-10-31

https://doi.org/10.1371/journal.pone.0312098

Taniguchi I. (2024) The SARS-CoV-2 ORF6 protein inhibits nuclear export of mRNA and spliceosomal U snRNA. PLoS ONE 19(10): e0312098. doi:10.1371/journal.pone.0312098.

Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is the causative agent of coronavirus disease 19 (COVID-19). SARS-CoV-2 infection suppresses host innate immunity and impairs cell viability. Among the viral proteins, ORF6 exhibits potent interferon (IFN) antagonistic activity and cellular toxicity. It also interacts with the RNA export factor RAE1, which bridges the nuclear pore complex and nuclear export receptors, suggesting an effect on RNA export. Using the Xenopus oocyte microinjection system, I found that ORF6 blocked the export of not only mRNA but also spliceosomal U snRNA. I further demonstrated that ORF6 affects the interaction between RAE1 and nuclear export receptors and inhibits the RNA binding of RAE1. These effects of ORF6 may cumulatively block the export of several classes of RNA. I also found that ORF6 binds RNA and forms oligomers. These findings provide insights into the suppression of innate immune responses and the reduction in cell viability caused by SARS-CoV-2 infection, contributing to the development of antiviral drugs targeting ORF6.

This article is licensed under a Creative Commons Attribution 4.0 International License.

98544

The SARS-CoV-2 ORF6 protein inhibits nuclear export of mRNA and spliceosomal U snRNA

Taniguchi, Ichiro

Public Library of Science

英語

2024-10-31

PLoS ONE

19

10

e0312098

https://doi.org/10.1371/journal.pone.0312098

https://hdl.handle.net/11094/98544