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Related Experiment Videos

Water-based microsphere delivery system for proteins.

R T Patil1, T J Speaker

  • 1Morton Grove Pharmaceuticals, 6451 West Main Street, Morton Grove, Illinois 60053, USA. tspeaker@nimbus.ocis.temple.edu

Journal of Pharmaceutical Sciences
|February 9, 2000
PubMed
Summary

This study developed a water-based microcapsule system for delivering proteins like horseradish peroxidase (HRP). The encapsulation process preserved protein structure and activity, enabling controlled release.

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Area of Science:

  • Biomaterials Science
  • Protein Delivery Systems
  • Polymer Chemistry

Background:

  • Protein-based therapeutics require stable delivery systems.
  • Microencapsulation offers a method for protecting and controlling protein release.
  • Developing water-based systems is crucial for sensitive biomolecules.

Purpose of the Study:

  • To formulate a water-based microcapsule delivery system for proteins.
  • To evaluate the structural integrity and activity of encapsulated proteins.
  • To assess the release characteristics of proteins from the microcapsules.

Main Methods:

  • Horseradish peroxidase (HRP) was blended with iota carrageenan.
  • Microdroplets were formed and crosslinked with various amines.

Related Experiment Videos

  • Encapsulated HRP was analyzed for size, conformation, activity, and release kinetics.

    • Main Results:

    • Capture efficiencies varied from 1% to 72% depending on the amine used.
    • Encapsulation did not alter protein size or tertiary structure.
    • Enzymatic activity was preserved, with nearly 100% recovery upon capsule lysis.

    Conclusions:

    • Water-based charged film encapsulation is suitable for protein delivery.
    • The method preserves protein structure and specific activity.
    • The system allows for controlled, constant rate protein release.