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Updated: May 25, 2025

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Analysis of mRNA Nuclear Export Kinetics in Mammalian Cells by Microinjection
Published on: December 4, 2010
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Effect of Exportin 1/XPO1 Nuclear Export Pathway Inhibition on Coronavirus Replication
Masmudur M Rahman1,2,3, Bereket Estifanos2,4, Honor L Glenn3,4
1Center for Personalized Diagnostics, Biodesign Institute, Arizona State University, Tempe, AZ 85287, USA.
Viruses
|February 26, 2025
Summary
Inhibiting the XPO1 (exportin 1) pathway with Selinexor enhanced mouse hepatitis virus replication. This pathway
Area of Science:
- Virology
- Molecular Biology
- Cell Biology
Background:
- Nucleocytoplasmic transport via XPO1 (exportin 1) is crucial for cellular functions.
- Viruses hijack XPO1 for replication, making it a therapeutic target.
- Selective XPO1 inhibitors like Selinexor may impact viral dynamics.
Purpose of the Study:
- To investigate the effect of XPO1 inhibition on coronavirus replication.
- To determine if Selinexor exhibits antiviral or proviral activity against MHV and SARS-CoV-2.
Main Methods:
- Utilized Selinexor, an FDA-approved XPO1 inhibitor.
- Employed cultured human and mouse cell lines.
- Assessed viral protein expression and replication levels.
- Performed XPO1 protein knockdown experiments.
Main Results:
- Selinexor pretreatment significantly enhanced mouse hepatitis virus (MHV) replication and protein expression in cell cultures.
- Knockdown of XPO1 also increased MHV replication in human cells.
- Selinexor showed varied effects on SARS-CoV-2 replication across different cell types.
Conclusions:
- XPO1 inhibition can enhance coronavirus replication, specifically MHV.
- The impact of XPO1 inhibition on viral replication is virus- and cell-type dependent.
- Targeting XPO1 may have complex implications for viral infections.
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