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Objective:Cervical cancer(CC) is the second most common type of cancer in women worldwide,after breast cancer.High-risk human papillomaviruses(HR-HPVs) are considered to be the major causes of cervical cancer.HPV16 is the most common type of HR-HPVs and HPV16 E6 gene is one of the major oncogenes.Specific mutations are considered as dangerous factors causing CC.This study was designed to find mutations of HPV16 E6 and the relationship between the mutations and the happening of CC.Methods:The tissue DNA was extracted from 15 biopsies of CC.Part of HPV16 E6 gene(nucleotide 201-523) was amplified by polymerase chain reaction(PCR) from the CC tissue DNA.The PCR fragments were sequenced and analyzed.Results:The result of PCR showed that the positive rate of HPV16 E6 was 93.33%(14/15).After sequencing and analyzing,in the 13 out of 14 PCR fragments,4 maintained prototype(30.77%),8 had a same 350G mutation(61.54%),and 1 had a 249G mutation(7.69%).Conclusion:This study suggest that there is a high infection rate of HPV in cervical cancer and most of the HPV16 E6 gene has mutations.Those mutations may have an association with the development of cervical cancer.
Objective: Cervical cancer (CC) is the second most common type of cancer in women worldwide, after breast cancer. High-risk human papillomaviruses (HR-HPVs) are the major causes of cervical cancer. HPV16 is the most common type of HR-HPVs and HPV16 E6 gene is one of the major oncogenic ,.Specific mutations were considered as dangerous factors causing CC. This study was designed to find mutations of HPV16 E6 and the relationship between the mutations and the happening of CC. Methods: The tissue DNA was extracted from 15 biopsies of CC. Part of HPV16 E6 gene (nucleotide 201-523) was amplified by polymerase chain reaction (PCR) from the CC tissue DNA. The PCR fragments were sequenced and analyzed. Results: The result of PCR showed that the positive rate of HPV16 E6 was 93.33% (14/15). After sequencing and analyzing, in the 13 out of 14 PCR fragments, 4 prototypes (30.77%), 8 had a same 350G mutation (61.54%), and 1 had a 249G mutation (7.69%). Conclusion: This study suggest that there is a high infection rate of HPV in cervical cancer and most of the HPV16 E6 gene has mutations. Thhigh mutations may have an association with the development of cervical cancer.