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Updated: Nov 17, 2025

Live Imaging and Quantification of Viral Infection in K18 hACE2 Transgenic Mice Using Reporter-Expressing Recombinant SARS-CoV-2
Published on: November 5, 2021
Potential drug targets of SARS-CoV-2: From genomics to therapeutics
Anas Shamsi1, Taj Mohammad1, Saleha Anwar1
1Centre for Interdisciplinary Research in Basic Sciences, Jamia Millia Islamia, Jamia Nagar, New Delhi 110025, India.
Abstract:
The emergence of severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) from China has become a global threat due to the continuous rise in cases of Coronavirus disease 2019 (COVID-19). The problem with COVID-19 therapeutics is due to complexity of the mechanism of the pathogenesis of this virus. In this review, an extensive analysis of genome architecture and mode of pathogenesis of SARS-CoV-2 with an emphasis on therapeutic approaches is performed. SARS-CoV-2 genome consists of a single, ~29.9 kb long RNA having significant sequence similarity to BAT-CoV, SARS-CoV and MERS-CoV genome. Two-third part of SARS-Cov-2 genome comprises of ORF (ORF1ab) resulting in the formation of 2 polyproteins, pp1a and pp1ab, later processed into 16 smaller non-structural proteins (NSPs). The four major structural proteins of SARS-CoV-2 are the spike surface glycoprotein (S), a small envelope (E), membrane (M), and nucleocapsid (N) proteins. S protein helps in receptor binding and membrane fusion and hence plays the most important role in the transmission of CoVs. Priming of S protein is done by serine 2 transmembrane protease and thus plays a key role in virus and host cell fusion. This review highlights the possible mechanism of action of SARS-CoV-2 to search for possible therapeutic options.
Insights
This review analyzes the severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) genome and pathogenesis, focusing on therapeutic strategies for Coronavirus disease 2019 (COVID-19). Understanding viral mechanisms is key to developing effective treatments.
Area of Science:
- Virology
- Genomics
- Drug Discovery
Background:
- The global threat of Coronavirus disease 2019 (COVID-19) stems from SARS-CoV-2.
- Developing effective COVID-19 therapeutics is challenging due to complex viral pathogenesis.
Purpose of the Study:
- To conduct an extensive analysis of the SARS-CoV-2 genome architecture.
- To elucidate the mode of pathogenesis of SARS-CoV-2.
- To emphasize potential therapeutic approaches for COVID-19.
Main Methods:
- Review of existing literature on SARS-CoV-2.
- Analysis of SARS-CoV-2 genome composition, including ORFs and structural proteins.
- Examination of the role of the spike (S) protein in viral transmission and entry.
Main Results:
- SARS-CoV-2 possesses a ~29.9 kb RNA genome with similarities to other coronaviruses.
- The genome encodes polyproteins processed into 16 non-structural proteins (NSPs).
- Key structural proteins include Spike (S), Envelope (E), Membrane (M), and Nucleocapsid (N), with S protein crucial for host cell entry.
Conclusions:
- Understanding the SARS-CoV-2 genome and pathogenesis is vital for identifying therapeutic targets.
- The S protein's role in viral entry presents a potential target for antiviral strategies.
- Further research into viral mechanisms can guide the development of novel COVID-19 treatments.
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