Related Experiment Videos
HPV and p53 in cervical cancer
1Department of Obstetrics and Gynaecology, University of Hong Kong, Queen Mary Hospital.
Genitourinary Medicine
|June 1, 1994
Summary
High prevalence of Human Papillomavirus (HPV) 16 and 18 DNA was found in Hong Kong cervical cancers. However, abnormal p53 protein expression was uncommon in these HPV-infected or uninfected cervical cancer samples.
Area of Science:
- Oncology
- Virology
- Molecular Biology
Background:
- Cervical cancer is a significant global health concern, often linked to persistent Human Papillomavirus (HPV) infections.
- Specific HPV genotypes, particularly HPV 16 and 18, are known oncogenic drivers.
- The p53 tumor suppressor protein plays a critical role in cell cycle regulation and apoptosis, and its dysfunction is common in various cancers.
Purpose of the Study:
- To investigate the prevalence of HPV 16 and 18 E6 DNA in cervical cancers in Hong Kong.
- To assess the expression of abnormal p53 protein in these cervical cancer samples.
- To correlate HPV DNA status with p53 protein expression in cervical cancer.
Main Methods:
- Analysis of 73 squamous cell cervical cancer biopsy samples.
- Detection of HPV 16 and 18 E6 DNA using Polymerase Chain Reaction and Southern Blotting (PCR/SB).
- Immunohistochemical staining (IHS) with antibody CM1 to detect abnormal p53 protein expression in 55 samples.
Main Results:
- HPV 16 E6 DNA detected in 67.2% and HPV 18 E6 DNA in 39.1% of samples.
- Co-infection with HPV 16 and 18 E6 DNA found in 32.8% of cases.
- Abnormal p53 protein expression was observed in only 3.6% of analyzed samples, irrespective of HPV status.
Conclusions:
- The study confirms a high prevalence of HPV 16 and 18 DNA in cervical cancers in Hong Kong.
- Abnormal p53 protein expression is infrequent in cervical cancers, even in the presence of HPV 16 or 18 infection.
- The findings suggest that p53 alterations may not be the primary mechanism for oncogenesis in the majority of HPV-related cervical cancers in this population.