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Published on: December 19, 2020
Polymeric vesicle permeability: a facile chemical assay
Giuseppe Battaglia1, Anthony J Ryan, Salvador Tomas
1Department of Engineering Materials, The Kroto Research Institute, University of Sheffield, Sheffield S3 7HQ, UK. g.battaglia@sheffield.ac.uk
Langmuir : the ACS Journal of Surfaces and Colloids
|May 17, 2006
Summary
This study introduces a new method to measure vesicle membrane permeability using 3,3
Area of Science:
- Biophysical Chemistry
- Materials Science
Background:
- Vesicles are crucial in biological systems and drug delivery.
- Accurate characterization of vesicle membrane properties, like permeability, is essential.
Purpose of the Study:
- To develop a straightforward method for characterizing vesicles.
- To simultaneously determine vesicle membrane permeability to specific molecules.
Main Methods:
- Encapsulation of 3,3',3' '-phosphinidynetris-benzenesulfonic acid (PH) within vesicles.
- Monitoring the reaction of PH with 5,5'-dithiobis-2-nitrobenzoic acid (DTNB) to assess permeability.
- Utilizing Fick's first law for data analysis.
Main Results:
- The developed method accurately measures membrane permeability.
- Polymeric poly(ethylene oxide)-co-polybutylene oxide (EB) membranes exhibit more selective permeability to polar molecules than phospholipid membranes.
- Experimental data align well with Fick's first law calculations.
Conclusions:
- The new method provides a simple yet effective way to characterize vesicle membranes.
- Polymeric EB membranes offer enhanced selectivity for polar molecules compared to traditional phospholipid membranes.
- This technique advances the understanding of membrane transport properties.
