Sorting of small infectious virus particles by flow virometry reveals distinct infectivity profiles

Raphaël Gaudin, Natasha S. Barteneva

Research output: Contribution to journalArticle

29 Citations (Scopus)

Abstract

The nature and concentration of lipids and proteins at the surface of viruses are essential parameters for determining particle infectiveness. Historically, averaged bulk analysis of viral particles has been the primary method to quantitatively investigate these parameters, though this neglects heterogeneity within populations. Here we analyse the properties of Junin virus particles using a sensitive flow virometry assay and further sort virions while conserving their infectiveness. This method allows us to characterize the relationship between infectivity, virus size and RNA content and to compare particles secreted by Vero cells with those from physiologically relevant human primary macrophages. Our study highlights significant differences in particle infectivity according to its nature, the type of producer cells and the lipid membrane composition at the budding site. Together, our results present the flow virometry assay as a powerful and versatile tool to define virus particle profiles.

Original languageEnglish
Article number6022
JournalNature Communications
Volume6
DOIs
Publication statusPublished - 2015
Externally publishedYes

Fingerprint

viruses
classifying
Viruses
Sorting
Virion
profiles
Assays
Junin virus
Vero Cells
lipids
Macrophages
RNA Viruses
Population Characteristics
Membrane Lipids
Membrane Proteins
macrophages
RNA
cells
Lipids
Chemical analysis

ASJC Scopus subject areas

  • Biochemistry, Genetics and Molecular Biology(all)
  • Chemistry(all)
  • Physics and Astronomy(all)
  • Medicine(all)

Cite this

Sorting of small infectious virus particles by flow virometry reveals distinct infectivity profiles. / Gaudin, Raphaël; Barteneva, Natasha S.

In: Nature Communications, Vol. 6, 6022, 2015.

Research output: Contribution to journalArticle

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