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Facile Preparation of Internally Self-assembled Lipid Particles Stabilized by Carbon Nanotubes
Published on: February 19, 2016
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Phospholipid-based self-assembled mesophase systems for light-activated drug delivery
Joanne D Du1, Wye-Khay Fong, Stefan Salentinig
1Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University (Parkville Campus), 381 Royal Parade, Parkville, VIC 3052, Australia. ben.boyd@monash.edu.
Physical Chemistry Chemical Physics : PCCP
|May 9, 2015
Summary
Researchers explored phospholipid mesophases for controlled drug release. Gold nanorods and near-infrared light were used to trigger drug release, showing potential for advanced light-activated delivery systems.
Area of Science:
- Materials Science
- Biotechnology
- Drug Delivery
Background:
- Phospholipid mesophases offer tunable drug release profiles, beneficial for conditions like macular degeneration.
- Controlling drug release kinetics is crucial for reducing injection frequency and improving therapeutic outcomes.
Purpose of the Study:
- To investigate the phase behavior of cholesterol-doped 1-palmitoyl-2-oleoyl-sn-glycero-3-phosphoethanolamine (POPE) systems.
- To develop a light-activated drug delivery system using gold nanorods (GNR) and near-infrared (NIR) laser irradiation.
Main Methods:
- Phase behavior analysis of POPE with varying cholesterol concentrations.
- Incorporation of GNR into POPE systems to induce photothermal heating upon NIR irradiation.
- Assessment of lipid packing disruption and temperature effects.
Main Results:
- Contrary to previous reports, POPE-cholesterol mixtures transitioned to an inverse hexagonal phase, not a bicontinuous cubic phase.
- NIR irradiation of GNR-loaded POPE systems induced reversible lipid packing disruption, simulating a 55 °C temperature increase.
- Demonstrated the potential of GNR and NIR for manipulating phospholipid mesophases.
Conclusions:
- The study identified a novel phase transition in POPE-cholesterol systems.
- Gold nanorods and NIR irradiation provide a mechanism for light-controlled modulation of phospholipid mesophases.
- This research highlights a promising avenue for developing phospholipid-based light-activated drug delivery systems.
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