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Related Experiment Video

Updated: Apr 1, 2026

Cellular Affinity of Particle-Stabilized Emulsion to Boost Antigen Internalization
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Protamine-based nanoparticles as new antigen delivery systems.

José Vicente González-Aramundiz1, Mercedes Peleteiro Olmedo2, África González-Fernández2

  • 1Center for Research in Molecular Medicine and Chronic Diseases (CIMUS), Health Research Institute of Santiago de Compostela (IDIS), Dept. of Pharmacy and Pharmaceutical Technology, School of Pharmacy, Univ. of Santiago de Compostela, Santiago de Compostela, Spain; Departamento de Farmacia, Facultad de Química, Pontificia Universidad Católica de Chile, Santiago, Chile.

European Journal of Pharmaceutics and Biopharmaceutics : Official Journal of Arbeitsgemeinschaft Fur Pharmazeutische Verfahrenstechnik E.V
|October 13, 2015
PubMed
Summary
This summary is machine-generated.

Biodegradable protamine-polysaccharide nanoparticles effectively deliver hepatitis B antigen, enhancing immune responses. These novel systems show potential as alternatives to traditional adjuvants for vaccine development.

Keywords:
Antigen deliveryHepatitis BHyaluronic acidHyaluronic acid (PubChem CID: 3084050)NanoparticlesProtamineProtamine sulfate (PubChem SID: 7849283)Sodium alginate (PubChem SID: 496141)Vaccine

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Area of Science:

  • Biomaterials Science
  • Immunology
  • Nanotechnology

Background:

  • Classical adjuvants like Alum present limitations in vaccine formulations.
  • Biodegradable nanoparticles offer a promising alternative for antigen delivery.
  • Developing novel antigen delivery systems is crucial for effective vaccination.

Purpose of the Study:

  • To design and develop protamine-polysaccharide nanoparticles as antigen delivery systems.
  • To utilize recombinant hepatitis B surface antigen as a model viral antigen.
  • To evaluate the potential of these nanoparticles as vaccine adjuvants.

Main Methods:

  • Protamine-polysaccharide nanoparticles were synthesized using ionic cross-linking.
  • Nanoparticle characteristics (size, charge) were modulated by component ratios.
  • Antigen loading, stability, and in vitro/in vivo immune responses were assessed.

Main Results:

  • Protamine-polysaccharide nanoparticles demonstrated tunable physicochemical properties and stability.
  • In vitro studies showed enhanced cytokine secretion by macrophages.
  • In vivo studies confirmed efficient immune responses against hepatitis B antigen after intramuscular administration.

Conclusions:

  • Protamine-polysaccharide nanoparticles serve as effective antigen delivery systems.
  • These nanoparticles exhibit potential adjuvant properties, enhancing immune responses.
  • The developed systems show promise for next-generation vaccine formulations.