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Issue 4, 2019
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Biologically-active unilamellar vesicles from red blood cells

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We demonstrate a method to prepare giant unilamellar vesicles (GUVs) with biologically-active protein activity, by mixing erythrocyte (red blood cell) membrane extract with phospholipids and growing their mixture in a porous hydrogel matrix. This presents a pathway to retain protein biological activity without prior isolation and purification of the protein, though only the activity of the membrane protein GLUT1 is investigated to date. Using the cascade enzymatic reaction glucose oxidase and horseradish peroxidase to assay glucose concentration specifically within the GUV interior, we show that glucose is internalized by GLUT1 whereas adding cytochalasin B, a GLUT1 inhibitor, blocks glucose transport. The method presented here operates at biological ionic strength and is both simple and potentially generalizable.

Graphical abstract: Biologically-active unilamellar vesicles from red blood cells

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The article was received on 13 Nov 2018, accepted on 08 Jan 2019 and first published on 21 Jan 2019

Article type: Paper
DOI: 10.1039/C8BM01461B
Citation: Biomater. Sci., 2019,7, 1393-1398

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    Biologically-active unilamellar vesicles from red blood cells

    H. Jang, Y. Cho and S. Granick, Biomater. Sci., 2019, 7, 1393
    DOI: 10.1039/C8BM01461B

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