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Updated: Jul 15, 2026
07:32
Preparation and Characterization of Individual and Multi-drug Loaded Physically Entrapped Polymeric Micelles
Published on: August 28, 2015
Long-circulating poly(ethylene glycol)-coated emulsions to target solid tumors
Joanna Rossi1, Suzanne Giasson, Mohamed Nabil Khalid
1University of Montreal, Montréal, Qué., Canada.
Summary
This study developed oil-in-water emulsions for cancer therapy. PEGylation improved circulation time, but accumulation varied by tumor type, highlighting the need for optimized emulsion design.
Area of Science:
- Nanotechnology
- Materials Science
- Biomedical Engineering
Background:
- Oil-in-water emulsions are crucial for drug delivery.
- Surface properties influence emulsion performance in vivo.
- Targeting neoplastic tissues requires optimized emulsion design.
Purpose of the Study:
- To develop oil-in-water emulsions (100-120 nm) for passive targeting of neoplastic tissues.
- To correlate emulsion surface properties with blood residence time and tumor accumulation.
- To investigate the impact of emulsifiers and PEGylation on emulsion performance.
Main Methods:
- Emulsifier screening using HSPC, ESM, PS-80, and DSPE-PEG lipids.
- Evaluation of emulsion stability in albumin and circulation longevity in vivo.
- Assessment of tumor accumulation in B16 melanoma and C26 colon adenocarcinoma models.
Main Results:
- PEGylation (DSPE-PEG 2000 or 5000) enhanced emulsion circulation time.
- Tumor accumulation was observed only in the C26 model.
- Tighter molecular packing (ESM/PS-80) improved in vitro stability but not in vivo circulation.
Conclusions:
- Emulsion surface properties significantly impact stability and circulation.
- PEGylation is key for prolonging blood residence time.
- Further research is needed to optimize emulsion composition for enhanced tumor targeting in cancer therapy.
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