Nanoengineered Light-Activatable Polybubbles for On-Demand Therapeutic Delivery

Area of Science:

• Biomaterials Science
• Nanotechnology
• Vaccinology

Background:

• Vaccine coverage is limited in developing countries due to poor vaccine stability and patient compliance.
• Existing vaccine delivery systems often lack thermostability and controlled release mechanisms.

Purpose of the Study:

• To develop an injectable, light-activatable polybubble platform for enhanced vaccine delivery.
• To achieve thermostable vaccine storage and on-demand, delayed burst release of therapeutic cargo.

Main Methods:

• Formation of injectable polybubbles encapsulating various cargo (small molecules, antigens).
• Incorporation of near-infrared (NIR)-sensitive gold nanorods (AuNRs) for light-activatable properties.
• In vitro, ex vivo, and in vivo studies to assess polybubble activation and cargo release.

Main Results:

• Pol bubbles demonstrated delayed burst release of different cargo types.
• NIR light successfully activated AuNR-loaded polybubbles for on-demand cargo release.
• Successful in vitro, ex vivo, and in vivo activation of the polybubble system was confirmed.

Conclusions:

• Light-activatable polybubble technology provides a promising solution for thermostable vaccine delivery.
• The platform enables on-demand release of diverse therapeutics, including vaccines, drugs, and nucleic acids.
• This technology has the potential to improve global vaccine coverage and therapeutic administration.