Arenavirus Vector HPV Antigen Expression
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Solution Overview
Problem
Current therapies for cervical cancer caused by Human Papillomavirus (HPV) infections lack effective treatments for established cancers and do not address chronic HPV infections, with existing vaccines only preventing new infections rather than altering the course of pre-existing ones.
Innovation Solution
Development of genetically modified arenaviruses that act as replication-deficient viral vectors, capable of expressing HPV antigens and immunomodulatory peptides, to target and treat HPV-related cancers by inducing a specific immune response.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional therapies are used for established cervical cancer, then treatment options are limited, but the lack of effective treatment for pre-existing cancers and chronic HPV infections remains unresolved
Solution Approach 1:
Instead of using traditional cancer therapy approaches that target established tumors, the patent inverts the strategy by using a viral vector system that first targets and treats the chronic HPV infection itself. The arenavirus vector delivers immunomodulatory peptides and HPV antigens to stimulate the immune system to clear pre-existing infections, thereby preventing cancer development rather than treating established cancer.
Solution Approach 2:
The patent introduces an intermediary viral vector system (arenavirus-based) that mediates between the HPV infection and the host immune system. This vector acts as a carrier to deliver immunomodulatory peptides and HPV antigens, bridging the gap between the pathogen and the immune response, thereby enabling treatment of both the infection and potential cancer development.
2Reliability
If existing HPV vaccines are administered, then new infections are prevented, but pre-existing infections are not altered
Solution Approach 1:
The patent creates a multi-functional viral vector system that simultaneously performs multiple functions: it delivers HPV antigens to stimulate antigen-specific immune responses, co-delivers immunomodulatory peptides to enhance immune activation, and targets both pre-existing infections and provides ongoing protection. This universal system addresses both prevention and treatment needs in a single platform.
Solution Approach 2:
The patent employs a composite viral vector construction that combines arenavirus elements with inserted HPV antigen genes and immunomodulatory peptide sequences. This composite structure integrates multiple functional components within a single viral platform, enabling simultaneous antigen presentation and immune modulation that neither component could achieve alone.
3Reliability
If replication-deficient arenavirus vectors are used to express HPV antigens, then specific immune response is induced, but the complexity of viral vector construction increases
Solution Approach 1:
The patent segments the viral vector construction into modular components: the arenavirus backbone provides replication-deficiency and basic immune stimulation, while separate insertional elements carry HPV antigens and immunomodulatory peptides. This segmentation allows independent optimization of each component and simplifies the overall construction process through standardized modular assembly.
Data Source
AI summary
Provided herein are genetically modified arenaviruses suitable as vaccines against neoplastic diseases or cancer. The invention also relates to pharmaceutical compositions and methods for the prevention or treatment of certain infections causing neoplastic diseases or cancer, such as infections with oncogenic viruses. Specifically, provided herein are pharmaceutical compositions, vaccines, and methods of preventing or treating diseases and conditions caused by and associated with infections with Human Papillomavirus (HPV), such as cervical cancer, anogenital cancer, head and neck cancer and skin cancers. Also provided herein are immunotherapies for the treatment of a neoplastic disease, such as a neoplastic disease caused by infection with oncogenic viruses.