Epicutaneous Dry Antigen Patch for TH1 Immune Response
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Solution Overview
Problem
Conventional vaccination methods require multiple administrations, often with adjuvants and liquid preparations, which can be inconvenient and do not effectively control or analyze the immune response, particularly in inducing a strong TH1-oriented immune response.
Innovation Solution
The method involves applying a dry, non-adjuvanted antigen preparation to intact skin using an occlusive patch device, which amplifies and TH1-orientes a pre-existing immune response, either as a boost following conventional vaccination or as a standalone treatment, to enhance immunity against pathogens.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional vaccination uses liquid preparations with adjuvants and multiple administrations, then immune response can be induced, but convenience is reduced and immune response orientation (TH1) is not effectively controlled
Solution Approach 1:
The invention changes the physical state of the antigen preparation from liquid to dry form, and modifies the administration route from parenteral to epicutaneous application. This parameter change eliminates the need for adjuvants and multiple injections while effectively inducing TH1-oriented immune response through the skin's immune-competent cells
Solution Approach 2:
The invention extracts and eliminates the adjuvant component from the vaccination system by using dry antigen preparations applied to the skin. The skin itself serves as the delivery system and immune activator, removing the need for separate adjuvant substances while maintaining effective TH1 response induction
2Reliability
If multiple priming and boost administrations are used in conventional vaccination, then immune response is amplified, but the number of administrations and time required increases
Solution Approach 1:
The dry epicutaneous antigen preparation is designed to provide both priming and boosting effects in a single application or minimal applications. The formulation and delivery method are preliminarily optimized to ensure sufficient antigen exposure and immune activation without requiring multiple separate administration sessions
Solution Approach 2:
The invention merges the functions of multiple priming and boost administrations into a single epicutaneous application protocol. The dry antigen preparation combines the immunogenic properties needed for both initial immune activation and subsequent amplification in one convenient treatment
3Reliability
If skin pre-treatment and liquid adjuvanted preparations are used for transcutaneous immunization, then immune response is provoked, but the system becomes more complex and less convenient
Solution Approach 1:
The skin's natural structure and immune-competent cells serve the dual function of both delivery vehicle and immune activator. No external adjuvants or pre-treatment procedures are needed - the skin itself performs the work of antigen delivery and immune system activation, simplifying the overall system
Solution Approach 2:
The invention removes the need for skin pre-treatment procedures (such as tape stripping or chemical preparation) and eliminates adjuvant substances from the system. Only the dry antigen preparation and simple skin application remain, dramatically reducing system complexity while maintaining effective immune response induction
Data Source
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AI summary
The present invention relates to methods for vaccination of a subject. Particularly, the present invention discloses the use of skin antigen application to amplify a pre-existing immunity against a selected pathogen in a subject. The present invention discloses the use of skin application in combination with conventional vaccination or priming for immunization or vaccination of a subject against a selected pathogen.