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Updated: Jan 21, 2026
06:02
Arbovirus Infections As Screening Tools for the Identification of Viral Immunomodulators and Host Antiviral Factors
Published on: September 13, 2018
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Effects of Arbovirus Multi-Host Life Cycles on Dinucleotide and Codon Usage Patterns
Nicole R Sexton1, Gregory D Ebel2
1Department of Microbiology, Immunology and Pathology, College of Veterinary Medicine and Biomedical Sciences, Colorado State University, Fort Collins, CO 80523, USA.
Viruses
|July 25, 2019
Summary
Arthropod-borne viruses (arboviruses) adapt their RNA genomes to distinct vertebrate and invertebrate hosts. This comparative study explores how host environments shape viral genetic composition, impacting evolution.
Area of Science:
- Virology
- Genomics
- Evolutionary Biology
Background:
- Arthropod-borne viruses (arboviruses) cause significant global health and agricultural impacts.
- Arboviruses infect both invertebrate (arthropod) and vertebrate hosts, requiring adaptation to vastly different cellular environments.
- Understanding arbovirus adaptation is crucial for predicting and controlling disease outbreaks.
Purpose of the Study:
- To analyze the comparative pressures on arbovirus RNA genomes due to their dual-host life cycle.
- To investigate non-amino acid altering genetic factors like dinucleotide and codon usage in arboviruses.
- To compare genetic profiles of arboviruses with single-host viruses and to contrast arthropod and vertebrate host influences.
Main Methods:
- Compilation and comparison of existing data on arboviral genetic composition (dinucleotide usage, codon usage).
- Review of arthropod and vertebrate host-specific genetic preferences (tRNA, dinucleotide, codon usage).
- Discussion of genetic robustness as a factor in arboviral evolution.
Main Results:
- Arboviruses exhibit distinct genetic profiles shaped by cyclical infection of vertebrate and invertebrate hosts.
- Significant differences exist in genetic composition between arboviruses and single-host viruses.
- Both arthropod and vertebrate hosts exert influence on arboviral RNA genome composition.
Conclusions:
- The dual-host lifestyle imposes unique evolutionary pressures on arbovirus genomes.
- Further research is needed to fully elucidate the complex interplay between hosts and arboviral genetic evolution.
- Genetic composition, including dinucleotide and codon usage, is a key area for understanding arbovirus adaptation.
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