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Updated: May 19, 2026

Visualization of SARS-CoV-2 using Immuno RNA-Fluorescence In Situ Hybridization
Published on: December 23, 2020
SARS-CoV regulates immune function-related gene expression in human monocytic cells
Wanchung Hu1, Yu-Ting Yen, Sher Singh
1Graduate Institute of Immunology, National Taiwan University College of Medicine, Taipei, Taiwan, ROC.
Severe acute respiratory syndrome coronavirus (SARS-CoV) alters immune cell gene expression. SARS-CoV infection downregulates key antiviral genes and upregulates hypoxia-related genes in monocytes, impacting SARS pathogenesis.
Area of Science:
- Immunology
- Virology
- Molecular Biology
Background:
- Severe acute respiratory syndrome (SARS) involves acute respiratory distress syndrome and pulmonary fibrosis.
- Monocytes and macrophages are critical in SARS pathogenesis.
Purpose of the Study:
- To compare the transcriptional profiles of SARS-CoV-infected monocytic cells versus coronavirus 229E (CoV-229E)-infected cells.
- To investigate immune-related gene expression changes in monocytes following SARS-CoV infection.
Main Methods:
- Extraction of total RNA from DC-SIGN-transfected monocytes (THP-1-DC-SIGN) at 6 and 24 hours post-infection.
- Gene expression profiling using oligonucleotide-based microarrays.
Main Results:
- At 24 hours post-SARS-CoV infection, interferon-α/β-inducible and cathepsin/proteasome genes were downregulated.
- Hypoxia/hyperoxia-related genes were upregulated.
- Toll-like receptor (TLR)/TLR-signaling, cytokine/cytokine receptor, chemokine/chemokine receptor, lysosome, MHC/chaperone, and fibrosis-related genes were differentially regulated.
Conclusions:
- SARS-CoV infection significantly regulates immune-related genes in monocytes/macrophages.
- These gene expression changes are potentially crucial for the pathogenesis of SARS.
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