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Updated: Nov 28, 2025

High-throughput Screening for Broad-spectrum Chemical Inhibitors of RNA Viruses
Published on: May 5, 2014
Molecular mechanisms and pharmacological interventions in the replication cycle of human coronaviruses
Fernando Moreira Simabuco1, Rodrigo Esaki Tamura2, Isadora Carolina Betim Pavan1,3
1Universidade Estadual de Campinas, Faculdade de Ciências Aplicadas (FCA), Laboratório Multidisciplinar em Alimentos e Saúde (LABMAS), Limeira, SP, Brazil.
Abstract:
SARS-CoV-2 (Severe Acute Respiratory Syndrome Coronavirus 2), as well as SARS-CoV from 2003 along with MERS-CoV from 2012, is a member of the Betacoronavirus genus of the Nidovirales order and is currently the cause of the pandemic called COVID-19 (or Coronavirus disease 2019). COVID-19, which is characterized by cough, fever, fatigue, and severe cases of pneumonia, has affected more than 23 million people worldwide until August 25th, 2020. Here, we present a review of the cellular mechanisms associated with human coronavirus replication, including the unique molecular events related to the replication transcription complex (RTC) of coronaviruses. We also present information regarding the interactions between each viral protein and cellular proteins associated to known host-pathogen implications for the coronavirus biology. Finally, a specific topic addresses the current attempts for pharmacological interventions against COVID-19, highlighting the possible effects of each drug on the molecular events of viral replication. This review intends to aid future studies for a better understanding of the SARS-CoV-2 replication cycle and the development of pharmacological approaches targeting COVID-19.
Insights
This review details the cellular mechanisms of human coronavirus replication, focusing on the SARS-CoV-2 replication transcription complex and host-pathogen interactions. It also explores current pharmacological interventions for COVID-19, aiding future research.
Area of Science:
- Virology
- Molecular Biology
- Infectious Diseases
Background:
- Coronaviruses, including SARS-CoV-2, SARS-CoV, and MERS-CoV, are significant human pathogens.
- COVID-19, caused by SARS-CoV-2, presents with symptoms like cough, fever, and pneumonia, impacting millions globally.
- Understanding coronavirus replication is crucial for developing effective treatments.
Purpose of the Study:
- To review the cellular mechanisms of human coronavirus replication.
- To elucidate the molecular events of the coronavirus replication transcription complex (RTC).
- To examine viral protein and host cell protein interactions and their implications.
- To discuss current pharmacological interventions targeting COVID-19.
Main Methods:
- Literature review of cellular mechanisms in coronavirus replication.
- Analysis of viral protein-host interactions.
- Review of pharmacological interventions and their molecular targets.
Main Results:
- Detailed overview of the unique molecular events within the coronavirus RTC.
- Identification of key host-pathogen interactions influencing coronavirus biology.
- Summary of current drug development strategies and their mechanisms of action against SARS-CoV-2.
Conclusions:
- A comprehensive understanding of SARS-CoV-2 replication is essential for developing targeted therapies.
- Further research into viral replication and host interactions can guide the development of novel antiviral drugs.
- This review provides a foundation for future studies on COVID-19 pathogenesis and treatment.
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