Triggered release of small molecules from proteinoid microspheres
1Kimberly-Clark Corp, 1400 Holcomb Bridge Rd., Roswell, GA 30076, USA. squirk@kcc.com
Journal of Biomedical Materials Research. Part A
|November 5, 2008
Summary
Proteinoid microspheres (PMs) can now deliver molecules controllably. A new method uses a reducible bridge to create windows in PMs for triggered release, aiding wound treatment.
Area of Science:
- Biomaterials science
- Chemical engineering
- Evolutionary biology
Background:
- Proteinoid microspheres (PMs), formed from amino acid condensation, have applications in evolutionary theory and catalysis.
- Traditional PMs have limitations as controlled delivery agents due to challenges in releasing encapsulated substances.
Purpose of the Study:
- To develop a method for controlled release of internal materials from proteinoid microspheres.
- To engineer PMs capable of acting as effective drug delivery vehicles.
Main Methods:
- Formation of PMs incorporating a molecular bridging agent.
- Utilizing a reducing environment to cleave the bridging agent, creating a release window.
- Controlling release rate via window size and reduction potential.
Main Results:
- Successfully created PMs with a reducible molecular bridge.
- Demonstrated controlled release of encapsulated small molecules by cleaving the bridge in a reducing environment.
- Release rate is tunable by adjusting window size and reduction potential.
Conclusions:
- The novel PMs offer a promising platform for controlled delivery of therapeutic agents.
- This approach enables temporal treatment of conditions like chronic or acute wounds.
- Amino acids serve as the primary, biocompatible breakdown products of the delivery vehicle.
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