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Published on: November 1, 2011
SARS-CoV-2 ORF8 accessory protein is a virulence factor
M Bello-Perez1, J Hurtado-Tamayo1, A Z Mykytyn2
1Department of Molecular and Cell Biology, National Center for Biotechnology (CNB-CSIC), Campus Universidad Autónoma de Madrid , Madrid, Spain.
The severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) ORF8 protein contributes to COVID-19 virulence by promoting inflammation and activating macrophages. Targeting ORF8 may offer new therapeutic strategies for COVID-19.
Area of Science:
- Virology
- Immunology
- Pathogenesis
Background:
- The role of SARS-CoV-2 ORF8 in COVID-19 pathogenesis remains unclear.
- Natural SARS-CoV-2 isolates with ORF8 deletions are linked to milder disease, suggesting ORF8 contributes to virulence.
Purpose of the Study:
- To investigate the role of SARS-CoV-2 ORF8 in inflammation and macrophage activation.
- To determine if ORF8 is a potential therapeutic target for COVID-19.
Main Methods:
- Utilized K18-hACE2 transgenic mice model.
- Employed organoid-derived human airway cell cultures.
Main Results:
- Demonstrated ORF8 protein involvement in promoting inflammation.
- Showed ORF8 activates macrophages in experimental systems.
Conclusions:
- SARS-CoV-2 ORF8 plays a significant role in COVID-19 pathogenesis through inflammation and macrophage activation.
- ORF8 protein is identified as a potential therapeutic target for COVID-19 treatment.
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