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Group Selection and Contribution of Minority Variants during Virus Adaptation Determines Virus Fitness and Phenotype.

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Author

  • Antonio V Bordería
  • Ofer Isakov
  • Gonzalo Moratorio
  • Rasmus Henningsson
  • Sonia Agüera-González
  • Lindsey Organtini
  • Nina F Gnädig
  • Hervé Blanc
  • Andrés Alcover
  • Susan Hafenstein
  • Magnus Fontes
  • Noam Shomron
  • Marco Vignuzzi
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Summary, in English

Understanding how a pathogen colonizes and adapts to a new host environment is a primary aim in studying emerging infectious diseases. Adaptive mutations arise among the thousands of variants generated during RNA virus infection, and identifying these variants will shed light onto how changes in tropism and species jumps can occur. Here, we adapted Coxsackie virus B3 to a highly permissive and less permissive environment. Using deep sequencing and bioinformatics, we identified a multi-step adaptive process to adaptation involving residues in the receptor footprints that correlated with receptor availability and with increase in virus fitness in an environment-specific manner. We show that adaptation occurs by selection of a dominant mutation followed by group selection of minority variants that together, confer the fitness increase observed in the population, rather than selection of a single dominant genotype.

Publishing year

2015

Language

English

Publication/Series

PLoS Pathogens

Volume

11

Issue

5

Document type

Journal article

Publisher

Public Library of Science (PLoS)

Topic

  • Immunology

Status

Published

ISBN/ISSN/Other

  • ISSN: 1553-7366