Monoclonal cell for expressing HPV (human papilloma virus) 18 type E6 protein and application of monoclonal cell in construction of HPV tumor animal model

By constructing and screening monoclonal cells expressing HPV18 E6 protein and establishing an HPV tumor animal model, the instability of polyclonal cell lines and poor repetition of experimental results were solved, efficient gene function research and immune response induction were achieved, and significant application prospects were achieved.

CN119752807AInactive Publication Date: 2025-04-04CHENGDU MAXVAX BIOTECHNOLOGY LLC +1
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Patent Information

Application Number
CN202510273558.5
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-03-10
Publication Date
2025-04-04
Estimated Expiration
Not applicable · inactive patent

AI Technical Summary

Technical Problem

The existing polyclonal cell lines of HPV18-related tumor models have problems such as inconsistent expression levels, inconsistent growth rates, poor stability and poor repeatability of experimental results, making it difficult to conduct accurate gene function research.

Method used

Monoclonal cells expressing HPV18 type E6 protein were constructed and screened by limited dilution and single-cell imaging sorting identification, combined with target gene sequencing and RT-PCR verification, and applied to non-human mammals to establish an HPV tumor animal model.

Benefits of technology

The stable expression of monoclonal cells and the stable growth of tumors have been achieved, the repetition of experimental results and the accuracy of genetic function research are improved, and it can effectively induce animal models to produce high levels of humoral immunity and cellular immune response, and has good application prospects for screening and prevention and/or treatment HPV drug compositions or vaccine compositions.

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Abstract

The invention discloses a monoclonal cell for expressing HPV (human papilloma virus) 18 type E6 protein and application of the monoclonal cell in construction of an HPV tumor animal model, and relates to the technical field of HPV tumor animal models. A monoclonal cell which can stably express target protein and is good in tumor formation effect is obtained through a limited dilution method and single cell imaging sorting identification, and after an animal model is inoculated with the medicine or vaccine composition, the medicine or vaccine composition has an obvious inhibition effect on tumors; an animal model can be induced to generate high-level humoral immunity, and high-level specific CD4 + T cell and CD8 + T cell immune response can be generated. Compared with a TC-1 cell, the monoclonal cell provided by the invention has more remarkable tumorigenicity and can better mediate the growth of tumors in animals. The monoclonal cell obtained by screening has a good application prospect in screening a pharmaceutical composition or a vaccine composition for preventing and / or treating HPV, and can be used for evaluating a therapeutic vaccine for targeting HPV18.
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