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Production of a SARS-CoV-2 Virus-Like-Particle System to Investigate Viral Life Cycles In Vitro
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The Life of SARS-CoV-2 Inside Cells: Replication-Transcription Complex Assembly and Function

Zhiyong Lou1, Zihe Rao1,2,3,4,5,6

  • 1Ministry of Education Key Laboratory of Protein Science, School of Medicine, Tsinghua University, Beijing, China; email: louzy@mail.tsinghua.edu.cn, raozh@tsinghua.edu.cn.

Annual Review of Biochemistry
|June 21, 2022
PubMed

Insights

This review details coronavirus nonstructural proteins and replication-transcription complexes (RTCs). Understanding these conserved viral targets is key to developing new antivirals against COVID-19 variants.

Area of Science:

  • Virology
  • Molecular Biology
  • Drug Discovery

Background:

  • The COVID-19 pandemic remains a significant global health challenge.
  • Emerging SARS-CoV-2 variants pose a threat to existing therapeutics.
  • Nonstructural proteins are crucial for viral RNA synthesis and are conserved across variants.

Purpose of the Study:

  • To review the structures and functions of coronavirus nonstructural proteins.
  • To elucidate the assembly and functions of replication-transcription complexes (RTCs).
  • To highlight the potential of nonstructural proteins as targets for novel antiviral development.

Main Methods:

  • Literature review of structural and functional studies on coronavirus nonstructural proteins.
  • Analysis of research on the assembly and mechanisms of RTCs.
  • Synthesis of current knowledge on viral replication and transcription processes.

Main Results:

  • Nonstructural proteins form the core of RTCs, essential for viral RNA replication.
  • These proteins exhibit conserved structures and functions across SARS-CoV-2 variants.
  • Understanding their molecular mechanisms provides insights into viral pathogenesis.

Conclusions:

  • Nonstructural proteins and RTCs are critical and conserved targets for antiviral strategies.
  • Targeting these components can lead to broad-spectrum antivirals effective against current and future variants.
  • Further research into these viral machinery components is vital for pandemic preparedness.
Keywords:
SARS-CoV-2assemblynonstructural proteinreplicationreplication–transcription complexstructuretranscriptionvirus life cycle

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