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Updated: Dec 3, 2025

Visualization of SARS-CoV-2 using Immuno RNA-Fluorescence In Situ Hybridization
Published on: December 23, 2020
Coronavirus biology and replication: implications for SARS-CoV-2
Philip V'kovski1,2, Annika Kratzel1,2,3, Silvio Steiner1,2,3
1Institute of Virology and Immunology (IVI), Bern, Switzerland.
Abstract:
The SARS-CoV-2 pandemic and its unprecedented global societal and economic disruptive impact has marked the third zoonotic introduction of a highly pathogenic coronavirus into the human population. Although the previous coronavirus SARS-CoV and MERS-CoV epidemics raised awareness of the need for clinically available therapeutic or preventive interventions, to date, no treatments with proven efficacy are available. The development of effective intervention strategies relies on the knowledge of molecular and cellular mechanisms of coronavirus infections, which highlights the significance of studying virus-host interactions at the molecular level to identify targets for antiviral intervention and to elucidate critical viral and host determinants that are decisive for the development of severe disease. In this Review, we summarize the first discoveries that shape our current understanding of SARS-CoV-2 infection throughout the intracellular viral life cycle and relate that to our knowledge of coronavirus biology. The elucidation of similarities and differences between SARS-CoV-2 and other coronaviruses will support future preparedness and strategies to combat coronavirus infections.
Insights
This review explores SARS-CoV-2 infection mechanisms, highlighting the need for effective treatments. Understanding virus-host interactions is crucial for developing antivirals and combating future coronavirus outbreaks.
Area of Science:
- Virology
- Infectious Diseases
- Molecular Biology
Background:
- The SARS-CoV-2 pandemic is the third zoonotic coronavirus outbreak, yet effective treatments remain unavailable.
- Previous epidemics (SARS-CoV, MERS-CoV) underscored the need for interventions, but clinical solutions are still lacking.
Purpose of the Study:
- To review current understanding of SARS-CoV-2 infection mechanisms.
- To elucidate virus-host interactions for antiviral target identification.
- To compare SARS-CoV-2 with other coronaviruses for future preparedness.
Main Methods:
- Review of existing scientific literature and discoveries.
- Analysis of molecular and cellular mechanisms of coronavirus infection.
- Comparative analysis of SARS-CoV-2 and other coronavirus biology.
Main Results:
- Summarizes key discoveries in SARS-CoV-2 intracellular life cycle.
- Identifies critical viral and host factors influencing disease severity.
- Highlights similarities and differences between SARS-CoV-2 and other coronaviruses.
Conclusions:
- Understanding virus-host interactions is vital for developing effective antiviral strategies.
- Comparative analysis aids in preparedness for future coronavirus threats.
- Further research into molecular mechanisms can guide therapeutic development.
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