Cited by 281Evolution and Genetic DynamicsMathematical and Theoretical Epidemiology and Ecology ModelsBacteriophages and microbial interactions

Theory of lethal mutagenesis for viruses

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Bull, J. J., Sanjuán, R., Wilke, C. O.·2007·Journal of Virology

Abstract

Mutation is the basis of adaptation. Yet, most mutations are detrimental, and elevating mutation rates will impair a population's fitness in the short term. The latter realization has led to the concept of lethal mutagenesis for curing viral infections, and work with drugs such as ribavirin has supported this perspective. As yet, there is no formal theory of lethal mutagenesis, although reference is commonly made to Eigen's error catastrophe theory. Here, we propose a theory of lethal mutagenesis. With an obvious parallel to the epidemiological threshold for eradication of a disease, a sufficient condition for lethal mutagenesis is that each viral genotype produces, on average, less than one progeny virus that goes on to infect a new cell. The extinction threshold involves an evolutionary component based on the mutation rate, but it also includes an ecological component, so the threshold cannot be calculated from the mutation rate alone. The genetic evolution of a large population undergoing mutagenesis is independent of whether the population is declining or stable, so there is no runaway accumulation of mutations or genetic signature for lethal mutagenesis that distinguishes it from a level of mutagenesis under which the population is maintained. To detect lethal mutagenesis, accurate measurements of the genome-wide mutation rate and the number of progeny per infected cell that go on to infect new cells are needed. We discuss three methods for estimating the former. Estimating the latter is more challenging, but broad limits to this estimate may be feasible.

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Research works printed but not linked: 2

  1. [5]Bordería, A. V., F. M. Codoñer, and R. Sanjuán. Selection drives organ compartmentalization in HIV-1: evidence from gag and pol genes. Evolution, in press. [DOI] [PubMed]
  2. [45]Maynard Smith, J. 1978. The evolution of sex. Cambridge University Press, Cambridge, United Kingdom.

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Authors
Bull, J. J., Sanjuán, R., & Wilke, C. O.
Affiliations
  • The University of Texas at Austin (US)
  • Section of Integrative Biology, The University of Texas at Austin, Austin, Texas 78712
Corresponding author
Wilke, C. O.
Venue
Journal of Virology
Published
2007-03-15
Volume
81
Issue
6
Pages
2930-2939
ISSN
  • 0022-538X (ISSN-L)
  • 1098-5514
OpenAlex
W2042712534
Cited by
281
References
68
Citations by year
2026: 8 · 2025: 6 · 2024: 11 · 2023: 17 · 2022: 19 · 2021: 12 · 2020: 16 · 2019: 15 · 2018: 13 · 2017: 16 · 2016: 9 · 2015: 11 · 2014: 12 · 2013: 18 · 2012: 22
FWCI
9.82
Type
journal article
Language
en
Open access
Locations
  • Journal of Virology (publishedVersion)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Generalitat Valenciana
  • National Institutes of Health
  • National Institute of General Medical Sciences (GM 57756, R01GM057756)
  • National Institute of Allergy and Infectious Diseases (R01AI065960, AI 065960)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Evolution and Genetic Dynamics
  • Health Sciences › Medicine › Public Health, Environmental and Occupational Health › Mathematical and Theoretical Epidemiology and Ecology Models
  • Physical Sciences › Environmental Science › Ecology › Bacteriophages and microbial interactions
Keywords
lethal mutagenesis, ribavirin, error catastrophe, extinction threshold, mutation rate, viral fitness, viral population dynamics, antiviral therapy
MeSH terms
Antiviral Agents, Models, Genetic, Mutation, Ribavirin, RNA Viruses, Viruses, Mutagenesis

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