[Characterization of Surface Interaction between Chitosan-modified Liposomes and Mucin Layer by Using CNT Probe AFM
Masahiro Yamamoto1, Tadashi Tsuchiya1, Motoyuki Iijima2
1Graduate School of Bio-Applications and Systems Engineering, Tokyo University of Agriculture and Technology.
Yakugaku Zasshi : Journal of the Pharmaceutical Society of Japan
|September 4, 2018
Summary
Chitosan modification enhances liposome adhesion to intestinal mucin by increasing attractive forces. This study used atomic force microscopy to detail liposome deformation and interaction with mucin, crucial for drug delivery.
Area of Science:
- Biomaterials Science
- Nanotechnology
- Surface Chemistry
Background:
- Liposomes are key drug delivery vehicles.
- Understanding liposome-mucin interactions is vital for oral drug absorption.
- Chitosan is a promising biopolymer for modifying liposomes.
Purpose of the Study:
- To characterize the adhesion and deformation of chitosan-modified liposomes interacting with intestinal mucin.
- To investigate the influence of pH on these interactions.
- To elucidate the role of chitosan in enhancing liposome-mucin binding.
Main Methods:
- Atomic force microscopy (AFM) was employed.
- A mucin layer was coated onto a carbon nanotube (CNT) probe.
- Liposome-mucin interactions were analyzed at pH 2.8 and 7.0.
Main Results:
- Chitosan modification significantly increased attractive forces between liposomes and mucin during separation.
- Long-range and varied attractive forces were observed between chitosan-modified liposomes and mucin.
- Chitosan modification altered the deformation behavior of liposomes.
Conclusions:
- Chitosan enhances liposome adhesion to the intestinal mucin layer.
- AFM with mucin-coated CNT probes is effective for studying liposome-mucin interactions.
- Findings support the potential of chitosan-modified liposomes for improved oral drug delivery.
Keywords:
atomic force microscopecarbon nanotube probechitosan modified liposomedrug delivery systemmucinMore Related Videos
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