Abstract
Planar rafts and caveolae are specific membrane clusters that contain high concentrations of cholesterol and lipids consisting of saturated fatty acids. These clusters are resistant to detergents and are known as “detergent-resistant membrane domains” (DRMs). Their morphology and size were studied by atomic force microscopy (AFM). Planar rafts extracted by Lubrol WX from monocytes of healthy donors are 150.6 ± 68.6 nm in diameter and 5.7 ± 2.9 nm in height, while caveolae are 87.3 ± 46.1 nm in diameter and 9.4 ± 5.4 nm in height. Significant differences in size and morphology were found between DRMs isolated from monocytes of healthy donors and patients with myocardial infarction, as well as between DRMs of monocytes and endothelial cells. The morphology dynamics of the isolated planar rafts and caveolae indicates that they quickly aggregate during storage; therefore, in order to assess the actual DRM size and morphology it is necessary to investigate them immediately after isolation.
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Abbreviations
- AFM:
-
atomic force microscopy
- DRM:
-
detergent-resistant membrane domains
- LDL:
-
low density lipoproteins
- MI:
-
myocardial infarction
- HUVEC:
-
human umbilical vein endothelial cells
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Original Russian Text © S.N. Pleskova, E.N. Aybeke, E. Bourillot, E. Lesniewska, 2016, published in Tsitologiya, 2016, Vol. 58, No. 2, pp. 120–128.
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Pleskova, S.N., Aybeke, E.N., Bourillot, E. et al. Characteristics of morphological differences of detergent-resistant membrane domains isolated from different cells and investigated by atomic force microscopy. Cell Tiss. Biol. 10, 233–241 (2016). https://doi.org/10.1134/S1990519X16030081
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DOI: https://doi.org/10.1134/S1990519X16030081