Fast solute release from photosensitive liposomes: an alternative to ‘caged’ reagents for use in biological systems

Abstract
The kinetics of release of soluble marker trapped in liposomes of gel phase phospholipid containing a photoisomerisable phospholipid analogue have been investigated. Marker release is triggered by UV laser flash photolysis at 355 nm. A markedly temperature‐dependent release rate is seen, and above 25°C millisecond release kinetics can be achieved. These results suggest that such liposomes might find application as an alternative to conventional ‘caged’ reagents for photo‐triggered reagent release in biological research.