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Live Imaging and Quantification of Viral Infection in K18 hACE2 Transgenic Mice Using Reporter-Expressing Recombinant SARS-CoV-2
Published on: November 5, 2021
Coronaviruses and their therapy
Bart L Haagmans1, Albert D M E Osterhaus
1Department of Virology, Erasmus Medical Center Rotterdam, Dr. Molewaterplein 50, 3015 GE Rotterdam, The Netherlands.
Abstract:
Coronaviruses may cause respiratory, enteric and central nervous system diseases in many species, including humans. Until recently, the relatively low burden of disease in humans caused by few of these viruses hampered development of coronavirus specific therapeutics. However, the emergence of severe acute respiratory syndrome coronavirus (SARS-CoV) has prompted the discovery of such drugs. Subsequent studies in animal models demonstrated the efficacy of SARS-CoV specific monoclonal antibodies, pegylated-interferon-alpha and siRNAs against SARS-CoV. Furthermore, several antivirals shown to be effective against other viruses were tested in vitro. Because of availability and shown efficacy, the use of interferons may be considered should SARS-CoV or a related coronavirus (re)-emerge. The more recent design of wide-spectrum inhibitors targeting the coronavirus main proteases may lead to the discovery of new antivirals against multiple coronavirus induced diseases.
Insights
The emergence of severe acute respiratory syndrome coronavirus (SARS-CoV) spurred the development of therapeutics. Interferons and broad-spectrum protease inhibitors show promise for treating current and future coronavirus diseases.
Area of Science:
- Virology
- Immunology
- Drug Discovery
Background:
- Coronaviruses cause various diseases in humans and animals.
- Limited therapeutic options existed due to low disease burden before SARS-CoV.
- The emergence of SARS-CoV highlighted the need for specific antiviral treatments.
Purpose of the Study:
- To review the development of therapeutics against coronaviruses, particularly SARS-CoV.
- To assess the efficacy of existing and novel antiviral strategies.
- To identify potential treatments for future coronavirus outbreaks.
Main Methods:
- Review of studies on SARS-CoV specific monoclonal antibodies.
- Evaluation of pegylated-interferon-alpha and siRNAs efficacy in animal models.
- In vitro testing of broad-spectrum antivirals and main protease inhibitors.
Main Results:
- SARS-CoV specific monoclonal antibodies, pegylated-interferon-alpha, and siRNAs demonstrated efficacy.
- Several broad-spectrum antivirals showed effectiveness in vitro.
- Wide-spectrum inhibitors targeting main proteases are a promising area for new drug discovery.
Conclusions:
- Interferons are a viable option for SARS-CoV or related coronavirus re-emergence.
- Broad-spectrum inhibitors targeting coronavirus main proteases offer potential for new, multi-disease antivirals.
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