Inside-outside self-assembly of light-activated fast-release liposomes

Natalie Forbes, Jeong Eun Shin, Maria Ogunyankin, Joseph A. Zasadzinski

Research output: Contribution to journalArticlepeer-review

8 Scopus citations

Abstract

Building additional functionality into both the membrane and the internal compartments of biocompatible liposomes by self-assembly can provide ways of enhancing colloidal stability and spatial and temporal control of contents release. An interdigitation-fusion process is used to encapsulate near infrared light absorbing copper sulfide nanoparticles in the interior compartments of dipalmitoylphosphatidylcholine and dipalmitoylphosphatidylglycerol liposomes. Once formed, the liposome membrane is modified to include lysolipids and polyethylene glycol lipids by partitioning from lysolipid and PEG-lipid micelles in solution. This results in sterically stable, thermosensitive liposomes with a permeability transition near physiological temperature that can be triggered by NIR light irradiation. Rapid changes in local concentration can be induced with spatial and temporal control using NIR laser light.

Original languageEnglish (US)
Pages (from-to)15569-15578
Number of pages10
JournalPhysical Chemistry Chemical Physics
Volume17
Issue number24
DOIs
StatePublished - Jun 28 2015

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