Development of multinuclear polymeric nanoparticles as robust protein nanocarriers
Jun Wu1, Nazila Kamaly, Jinjun Shi
1Laboratory of Nanomedicine and Biomaterials, Department of Anesthesiology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115 (USA); MIT-Harvard Center for Cancer Nanotechnology Excellence, Massachusetts Institute of Technology, Cambridge, MA 02139 (USA).
Angewandte Chemie (International Ed. in English)
|July 4, 2014
Summary
New biodegradable nanoparticles effectively encapsulate high protein loads without organic solvents. This novel core-shell structure offers a robust platform for protein and peptide delivery, maintaining bioactivity.
Area of Science:
- Biomaterials Science
- Nanotechnology
- Drug Delivery Systems
Background:
- Current biodegradable polymeric nanoparticles struggle with efficient protein encapsulation and sustained release while preserving bioactivity.
- Developing effective delivery vectors for proteins and peptides remains a significant challenge in therapeutic applications.
Purpose of the Study:
- To engineer novel PLGA-polycation nanoparticles with a core-shell structure for robust protein and peptide encapsulation and delivery.
- To investigate the relationship between nanoparticle characteristics (size, charge, composition) and protein loading efficiency.
Main Methods:
- Fabrication of PLGA-polycation nanoparticles with a core-shell architecture.
- Encapsulation of proteins and peptides in aqueous solution via electrostatic interactions and simple mixing.
- Characterization of nanosphere size, surface charge, and protein loading capacity.
Main Results:
- Optimized nanoparticles achieved high protein loading (>20% by weight) without organic solvents.
- Nanoparticles formed stable nanospheres (<200 nm) rapidly through electrostatic interactions.
- Established correlations between nanosphere properties and protein encapsulation efficiency.
Conclusions:
- Engineered PLGA-polycation nanoparticles provide a novel and effective strategy for delivering proteins and peptides.
- The core-shell nanostructure facilitates high-capacity, solvent-free protein loading, preserving bioactivity.
- This approach represents a significant advancement in biodegradable nanoparticle-based drug delivery systems.
