Plasma membrane coating with cationic silica particles and osmotic shock alters the morphology of bovine aortic endothelial cells - Archive ouverte HAL Access content directly
Journal Articles Biochimica et Biophysica Acta:Biomembranes Year : 2000

Plasma membrane coating with cationic silica particles and osmotic shock alters the morphology of bovine aortic endothelial cells

Abstract

We have used a published method of membrane preparation based on the precoating of the apical membrane of aortic endothelial cells with cationic silica microbeads (with or without polyacrylic acid) in combination with an osmotic shock and mechanical shearing to isolate the apical from the basal plasma membranes of these cells, in vitro. After labeling of the plasma membrane of adherent endothelial cells with a fluorescent derivative of phosphatidylcholine and by using laser confocal fluorescence scanning microscopy, we found that this method of membrane isolation rapidly induced invaginations of the basal plasma membrane to an extent which makes this method unsuitable for further membrane lipid analysis. Morphological analysis of the cells and fluorescence recovery after photobleaching experiments on the plasma membranes were performed at each step of the purification procedure and showed that only hypotonic shock and mechanical shearing of the cells enabled the basal plasma membranes to be purified without significant morphological changes. ß
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hal-01849228 , version 1 (05-06-2019)

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Claire Millot, Véronique Le Berre, Jean-François Tocanne, Jean-François Tournier. Plasma membrane coating with cationic silica particles and osmotic shock alters the morphology of bovine aortic endothelial cells. Biochimica et Biophysica Acta:Biomembranes, 2000, 1467 (1), pp.85 - 90. ⟨10.1016/S0005-2736(00)00207-8⟩. ⟨hal-01849228⟩
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