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Human papillomavirus type 16 sequence variants: identification by E6 and L1 lineage-specific hybridization
C M Wheeler1, T Yamada, A Hildesheim
1Department of Cell Biology, New Mexico Cancer Research and Treatment Center, University of New Mexico School of Medicine, Albuquerque 87131, USA. cwheeler@medusa.unm.edu
Journal of Clinical Microbiology
|January 1, 1997
Summary
New PCR-based probes accurately identify human papillomavirus type 16 (HPV-16) variants by targeting specific DNA sequences. These methods enable large-scale, low-cost analysis for epidemiologic studies of HPV-16 transmission and disease.
Area of Science:
- Virology
- Molecular Biology
- Epidemiology
Background:
- Human papillomavirus type 16 (HPV-16) is a major cause of cervical cancer.
- Understanding HPV-16 genetic diversity is crucial for epidemiology and vaccine development.
- Previous methods for HPV-16 variant identification were complex and costly.
Purpose of the Study:
- To develop and validate PCR-based oligonucleotide probe systems for distinguishing HPV-16 variants.
- To characterize HPV-16 variants in clinical specimens using these novel probe systems.
- To facilitate large-scale, low-cost analysis of HPV-16 variants in epidemiologic studies.
Main Methods:
- Developed 23 E6-specific and 12 L1-specific oligonucleotide probes targeting known variant nucleotide positions.
- Applied these probes to characterize HPV-16 variants in cervicovaginal lavage specimens.
- Compared hybridization results with nucleotide sequence determinations for validation.
Main Results:
- Successfully distinguished HPV-16 class and subclass variants based on hybridization patterns.
- Identified major lineages including European prototype-like (E-P), Asian (As), Asian-American (AA), and African (Af1, Af2).
- Demonstrated covariation of targeted L1 and E6 marker nucleotides, indicating high accuracy with minimal misclassification error.
Conclusions:
- The developed PCR-based oligonucleotide probe systems are effective for accurate HPV-16 variant identification.
- These methods are amenable to targeting additional lineage-specific nucleotide positions.
- The approach facilitates large-scale, low-cost analysis, supporting epidemiologic studies on HPV-16 transmission, natural history, and associations with host immunity and cervical neoplasia.