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Guinea Pig X Virus Is a Gammaherpesvirus
Vy Ngoc Yen Truong1, Robert Ellis2, Brent A Stanfield2
1Department of Veterinary Biomedical Sciences, School of Veterinary Medicine, Seoul National University, Gwanak-gu, Seoul 08826, Republic of Korea.
Viruses
|August 28, 2025
Summary
The newly identified Guinea Pig X Virus (GPXV) genome reveals distinct evolutionary paths, diverging from primate viruses and clustering with rodent and bovine gammaherpesviruses. This study offers insights into viral evolution and host-specific adaptations.
Area of Science:
- Virology
- Genomics
- Evolutionary Biology
Background:
- The Guinea Pig X Virus (GPXV) is a recently discovered gammaherpesvirus.
- Understanding its genomic characteristics and evolutionary relationships is crucial for studying host-virus dynamics.
Purpose of the Study:
- To characterize the GPXV genome.
- To investigate its phylogenetic relationships with other gammaherpesviruses.
- To compare GPXV with the Guinea Pig Herpes-Like Virus (GPHLV).
Main Methods:
- Virus propagation in Vero cells and DNA extraction.
- Whole-genome sequencing using Illumina MiSeq and Sanger sequencing.
- Phylogenetic analyses of key viral genes (ORF8, ORF9, ORF50, ORF73).
Main Results:
- GPXV exhibits variable evolutionary relationships, diverging from primate gammaherpesviruses and aligning with bovine and rodent viruses.
- Comparative genomic analysis revealed 24 unique genomic features in GPXV and significant sequence divergence in 62 shared ORFs with GPHLV.
- Phylogenetic analyses indicated distinct evolutionary trajectories for GPXV compared to other gammaherpesviruses.
Conclusions:
- GPXV possesses a unique evolutionary trajectory within the gammaherpesvirus family.
- The findings underscore GPXV's potential as a model for studying host-specific viral adaptations and gammaherpesvirus diversity.
