Visualization of membrane loss during the shrinkage of giant vesicles under electropulsation

Details Visualization of membrane loss during the shrinkage of giant vesicles under electropulsation Visualization of membrane loss during the shrinkage of giant vesicles under electropulsation

2008-05-23

arxiv.org/abs/0805.3600v2

Biophysical Journal 96, pp 4109-4121 (2009)

Physics

Condensed Matter

Soft Condensed Matter

Final published version

Scientific paper

10.1016/j.bpj.2009.02.063

We study the effect of permeabilizing electric fields applied to two different types of giant unilamellar vesicles, the first formed from EggPC lipids and the second formed from DOPC lipids. Experiments on vesicles of both lipid types show a decrease in vesicle radius which is interpreted as being due to lipid loss during the permeabilization process. We show that the decrease in size can be qualitatively explained as a loss of lipid area which is proportional to the area of the vesicle which is permeabilized. Three possible mechanisms responsible for lipid loss were directly observed: pore formation, vesicle formation and tubule formation.

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