Ultrastructural analysis of SARS-CoV-2 interactions with the host cell via high resolution scanning electron microscopy

Sci Rep. 2020 Sep 30;10(1):16099. doi: 10.1038/s41598-020-73162-5.

Abstract

SARS-CoV-2 is the cause of the ongoing COVID-19 pandemic. Here, we investigated the interaction of this new coronavirus with Vero cells using high resolution scanning electron microscopy. Surface morphology, the interior of infected cells and the distribution of viral particles in both environments were observed 2 and 48 h after infection. We showed areas of viral processing, details of vacuole contents, and viral interactions with the cell surface. Intercellular connections were also approached, and viral particles were adhered to these extensions suggesting direct cell-to-cell transmission of SARS-CoV-2.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animals
  • Betacoronavirus / ultrastructure*
  • COVID-19
  • Cell Line
  • Chlorocebus aethiops
  • Coronavirus Infections / pathology
  • Coronavirus Infections / transmission*
  • Host-Pathogen Interactions / physiology*
  • Humans
  • Microscopy, Electron, Scanning
  • Pandemics
  • Pneumonia, Viral / pathology
  • Pneumonia, Viral / transmission*
  • SARS-CoV-2
  • Vero Cells