Hypoxia inducible factors regulate infectious SARS-CoV-2, epithelial damage and respiratory symptoms in a hamster COVID-19 model
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View abstract on PubMed
Summary
This summary is machine-generated.Hypoxic inducible factor (HIF) signaling inhibits SARS-CoV-2 infection and disease. Activating HIF with FG-4592 reduced viral load and respiratory symptoms in hamsters, offering new therapeutic avenues.
Area Of Science
- Virology
- Immunology
- Respiratory Medicine
Background
- Host pathways influencing SARS-CoV-2 susceptibility are key for therapy development.
- The impact of hypoxia on viral replication and disease severity in animal models remains unclear.
Purpose Of The Study
- To investigate the role of hypoxic inducible factor (HIF) signaling in SARS-CoV-2 infection.
- To evaluate the therapeutic potential of HIF activation against SARS-CoV-2 in a Syrian hamster model.
Main Methods
- Utilized the Syrian hamster model for SARS-CoV-2 infection.
- Administered the prolyl-hydroxylase inhibitor FG-4592 to activate HIF.
- Performed transcriptomic and pathological analyses to assess viral load, epithelial damage, and cellular changes.
Main Results
- HIF activation significantly reduced infectious SARS-CoV-2 in the upper and lower respiratory tracts.
- Treated hamsters exhibited decreased SARS-CoV-2 RNA and nucleocapsid expression in nasal and lung epithelia.
- Pathological analysis revealed reduced epithelial damage and an increase in ciliated cells.
Conclusions
- The HIF signaling pathway possesses intrinsic antiviral properties against SARS-CoV-2.
- Pharmacological activation of HIF via FG-4592 demonstrates therapeutic potential for COVID-19.
- Findings may extend to other respiratory pathogens, highlighting new therapeutic opportunities.
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