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In India, cervical cancer is the most common cancer among females. Persistence infection with high risk human papillomaviruses (HR-HPV) is an etiological agent for cervical cancer development, especially HPV-16 is found to be exclusively high in cervical cancer cases in Indian population. The continuous expression and transforming ability of HPV E7 helps in progression of cervical cancer and other HPV related disease, which make E7 as a suitable targets for the development of therapeutic vaccines.  Objectives: Identification of T-&amp; B-cell epitopes HPV-16 E7 gene isolated from in cervical cancer patients.  Materials and Methods: A total of 80 cervical cancer tissue biopsies were collected and processed for DNA extraction, HPV diagnosis and genotyping. E7 gene of HPV-16 positive samples were amplified and sequenced. Epitopes in E7 gene sequence were predicted by online freely available tools.  Results: In the present study we got 72 samples (90%) were positive for HPV and out of which 68 samples (94.4%) were positive for the HPV-16. HPV-16 positive samples were sequenced and translated. IEDB server was used for epitope analysis; 12 potent epitopes for the MHC-I alleles were identified in isolated E7 gene of HPV-16. The most potent epitopes were MHGDTPTLHEYM for HLA-C*07:01; LLMGTLGIVCPI for HLA-A*02:01 and MHGDTPTLHEYML for HLA-C*07:01; having percentile rank 0.2 for all three and antigencity score of 0.20011, 0.15358 and 0.10735, respectively.  Conclusion: This is an effective strategy to design immuno-therapeutics and therapeutic vaccine against HPV using E7 as target. These findings will be helpful in the development of effective vaccine for particular geographical region.

Identification of T- and B-cell epitopes in HPV-16 E7 gene isolated from cervical cancer patients