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Electron microscopy overview of SARS-COV2 and its clinical impact

Soheir Saiid Mansy1, Mona Mahmoud AbouSamra2

  • 1Electron Microscopy Research Department, Theodor Bilharz Research Institute, Egypt.

Ultrastructural Pathology
|February 10, 2022
PubMed

Insights

Electron microscopy (EM) is crucial for understanding SARS-CoV-2's structure and pathogenesis. Advanced EM techniques aid in developing vaccines and therapies against COVID-19 variants by analyzing viral proteins and immune responses.

Area of Science:

  • Virology
  • Microscopy
  • Immunology

Background:

  • The COVID-19 pandemic necessitates rapid development of therapeutic and prophylactic agents.
  • Understanding SARS-CoV-2 biology and cell interactions is key to effective interventions.
  • Emergence of highly transmissible and infectious viral variants poses a significant global health challenge.

Purpose of the Study:

  • To highlight the critical role of electron microscopy (EM) in studying SARS-CoV-2 morphology, morphogenesis, and pathogenesis.
  • To emphasize the utility of cryo-electron microscopy (cryo-EM) for high-resolution structural analysis of viral components.
  • To underscore the need for continued investigation into viral adaptation and immune pressure.

Main Methods:

  • Review of electron microscopy (EM) and cryo-electron microscopy (cryo-EM) applications in SARS-CoV-2 research.
  • Analysis of viral structure, protein complexes, and cellular interactions using advanced imaging techniques.
  • Examination of viral variants and their adaptive mutations, particularly in the spike protein.

Main Results:

  • EM provides essential insights into the nanometric dimensions, morphology, and pathogenesis of SARS-CoV-2.
  • Cryo-EM enables atomic-resolution structural determination of viral protein complexes in their native state.
  • Advancements in EM have facilitated the development of targeted antibodies, vaccines, and therapies against SARS-CoV-2 and its variants.

Conclusions:

  • Electron microscopy is indispensable for advancing our understanding of SARS-CoV-2 and combating COVID-19.
  • Continued research using EM is vital for addressing viral variants and potential immune evasion.
  • Further investigation into immune pressure and viral adaptation from infection and vaccination is necessary.
Keywords:
COVID19Electron microscopySARS-CoV-2acute respiratory distress syndrome (ARDS)coronaviruscryo-electron microscopyspike S protein structure

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