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Human papillomavirus type 16 variant lineages characterized by nucleotide sequence analysis of the E5 coding segment
The Journal of General Virology
|March 26, 1999
Summary
This study details human papillomavirus type 16 (HPV-16) sequence variations in key gene regions. Identifying these HPV-16 variants may help understand cervical cancer risk and immune responses.
Area of Science:
- Virology
- Molecular Biology
- Oncology
Background:
- Human papillomavirus type 16 (HPV-16) is a high-risk type associated with cervical cancer.
- Previous research characterized HPV-16 sequence variations in E6, L2, L1, and LCR regions.
Purpose of the Study:
- To characterize sequence variations in the E5 coding segment and E2 hinge region of HPV-16.
- To investigate potential impacts of these variations on biological functions and immune responses.
Main Methods:
- Analysis of 52 cervical cell isolates (29 previously studied, 23 new).
- Sequencing of the complete E5 coding segment and E2 hinge region of HPV-16.
Main Results:
- Identified 8 amino acid variations in the E5 segment.
- Detected 13 variations in the E2 hinge region.
- Observed 5 variations in the overlapping E4 coding segment.
Conclusions:
- Amino acid variations in HPV-16 may influence biological functions and immune responses.
- Characterizing HPV variants is crucial for understanding cervical cancer epidemiology and risk.