Recombinant Marek's Disease Viral Vector for Multi-Disease Poultry Vaccination
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Solution Overview
Problem
Current live vaccines for poultry only provide protection against single diseases and can cause mild forms of the disease, affecting production yields, while there is a need for simultaneous protection against multiple diseases.
Innovation Solution
Development of recombinant viral vectors with transgenes inserted into specific regions of the Marek's disease virus genome, expressing genes from multiple avian pathogens like infectious bursal disease virus, Newcastle disease virus, and avian influenza virus, to create a single vaccine that provides protection against multiple diseases.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If live vaccines are used to control poultry diseases, then protection against disease is provided, but only against a single disease and mild forms of the disease occur affecting production yields
Solution Approach 1:
The patent combines multiple transgenes from different avian pathogens (Marek's disease virus, infectious bursal disease virus, Newcastle disease virus, avian influenza virus) into a single recombinant viral vector genome. This merging of multiple protective functions into one vaccine allows simultaneous protection against multiple diseases, directly resolving the contradiction between single-disease protection and multi-disease protection needs.
Solution Approach 2:
The recombinant viral vector is designed as a universal platform that can express multiple foreign antigens from different pathogens. The vector system provides multi-functionality by delivering immunogenic material for Marek's disease plus additional diseases (IBD, ND, AI) through a single vaccine administration, eliminating the need for separate vaccines for each disease.
2Adaptability or versatility
If multiple separate vaccines are used to protect against multiple diseases, then comprehensive protection is achieved, but vaccine complexity and administration burden increase
Solution Approach 1:
Multiple vaccine functions are merged into a single recombinant viral vector construct. The patent integrates transgenes for Marek's disease, infectious bursal disease, Newcastle disease, and avian influenza into one viral genome, reducing the complexity of administering multiple separate vaccines while maintaining comprehensive protection.
3Adaptability or versatility
If transgenes are inserted into the Marek's disease viral genome, then multi-disease protection is achieved, but viral genome stability may be affected
Solution Approach 1:
The patent segments the viral genome into specific regions for transgene insertion, choosing locations that minimize disruption to essential viral functions. By identifying permissive regions and using precise insertion strategies, the patent maintains viral genome stability while enabling multi-disease protection through transgene integration.
Data Source
AI summary
The present disclosure provides a recombinant viral vector comprising at least one transgene inserted into a Marek's disease viral genome for treatment of diseases in poultry. Also provided are immunogenic compositions comprising such recombinant viral vectors and methods for preventing or inhibiting Marek's disease in combination with at least a second disease in poultry.