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Production of Near-Infrared Sensitive, Core-Shell Vaccine Delivery Platform
Published on: October 20, 2020
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An ultraviolet-curable, core-shell vaccine formed via phase separation
Jihui Lee1, Shreedevi Arun Kumar1, Whitney N Souery1
1Department of Biomedical Engineering, Texas A&M University, College Station, Texas.
Journal of Biomedical Materials Research. Part A
|May 21, 2019
Summary
Researchers developed novel single-injection vaccine depots called "polybubbles" for controlled antigen release. This innovation aims to improve vaccine stability and accessibility, potentially reducing mortality rates globally.
Area of Science:
- Biomaterials Science
- Vaccine Delivery Systems
- Polymer Chemistry
Background:
- Developing effective vaccine delivery systems is crucial for maintaining antigen stability and controlling release kinetics.
- Improved vaccine delivery can expand global access and reduce mortality, particularly in developing nations.
- Current methods face challenges in balancing antigen protection with controlled release profiles.
Purpose of the Study:
- To develop a novel single-injection vaccine depot system.
- To achieve a delayed burst release profile for antigens.
- To enhance antigen stability and control release kinetics for improved vaccine efficacy.
Main Methods:
- Synthesized poly(ε-caprolactone) and poly(ε-caprolactone) triacrylate to create polymeric bubbles (polybubbles).
- Formed polybubbles within a 10% carboxymethylcellulose aqueous solution.
- Injected cargo into polybubbles, forming a self-healing polymeric shell, followed by UV curing and lyophilization.
Main Results:
- Demonstrated the formation of stable polybubble vaccine depots.
- Confirmed that UV curing and lyophilization enhance polybubble stability.
- Successfully used model antigens (BSA-CF488, HIV1 gp120/41) as proof-of-concept for antigen delivery.
Conclusions:
- The developed polybubble system offers a promising approach for single-injection vaccine depots.
- The system enables controlled delayed burst release and enhances antigen stability.
- Further development towards automated production is underway to facilitate wider application.
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