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Intratype variation in 12 human papillomavirus types: a worldwide perspective
A C Stewart1, A M Eriksson, M M Manos
1Department of Cell Biology and the New Mexico Cancer Research and Treatment Center, University of New Mexico School of Medicine, Albuquerque 87131, USA.
Journal of Virology
|May 1, 1996
Summary
This study analyzed human papillomavirus (HPV) genetic diversity in cervical cancer specimens globally. Limited sequence variation was found within HPV types, offering insights for diagnostics and vaccine development.
Area of Science:
- Virology
- Genetics
- Epidemiology
Background:
- Human papillomavirus (HPV) is a major cause of cervical cancer worldwide.
- Understanding HPV genetic variation is crucial for developing effective diagnostics and vaccines.
- Previous studies have focused on intertype variation, with less known about intratype diversity.
Purpose of the Study:
- To examine intratype sequence variation across multiple human papillomavirus (HPV) types.
- To analyze HPV genetic diversity in a global collection of cervical specimens.
- To assess the implications of HPV genetic variation for diagnostic probe development and vaccine strategies.
Main Methods:
- Analysis of 12 different HPV types from cervical specimens collected globally.
- DNA amplification using the MY09/11 L1 consensus PCR system.
- Sequencing of a 410-bp region in the L1 open reading frame from 146 specimens.
Main Results:
- Nucleotide diversity within single HPV types ranged from 0.2% to 2.9%.
- The majority of nucleotide changes were synonymous, conserving amino acid sequences.
- Amino acid diversity varied from 0% to 5.1%, potentially indicating intertype evolutionary relationships.
Conclusions:
- Limited genetic diversity observed within HPV types may suggest an evolutionary bottleneck in both viral and host populations.
- Findings are relevant for improving HPV diagnostic probe design.
- Data provides a foundation for future rational HPV vaccine strategies.