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Quality Control of Bacterial Extracellular Vesicles with Total Protein Content Assay, Nanoparticles Tracking Analysis, and Capillary Electrophoresis
Abstract
Extracellular vesicles (EVs) were isolated from Pectobacterium zantedeschiae culturing media using direct ultracentrifugation (UC), iodixanol cushion ultracentrifugation (ICUC), and iodixanol density gradient ultracentrifugation (IDGUC) techniques. The isolates were characterized with total protein content assay (bicinchoninic acid assay, BCA), nanoparticles tracking analysis (NTA), and capillary electrophoresis (CE). A satisfactory correlation (R2 > 0.94) between quantitative results obtained with BCA, NTA and CE was achieved only for isolates obtained with the IDGUC. The correlation between protein content and CE was proved to be related to the isolates’ purity. The NTA was found unable to provide reliable information on EVs quantity in samples isolated with UC and ICUC, due to the co-isolated particulate impurities. Moreover, the work reports polysaccharides, used as culturing media components, as a potential source of bias of quantitation with total protein content assay and NTA. The study demonstrates the advantageous selectivity of CE in quality control of EVs and its ability to differentiate subpopulations of EVs of Pectobacterium.
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Authors (8)
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Joanna Jońca
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Krzysztof Waleron
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Małgorzata Waleron
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Agata Płoska
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Bartosz Wielgomas
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Szymon Dziomba
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Full text
- Publication version
- Accepted or Published Version
- DOI:
- Digital Object Identifier (open in new tab) 10.3390/ijms23084347
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Details
- Category:
- Articles
- Type:
- artykuły w czasopismach
- Published in:
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INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
no. 23,
ISSN: 1661-6596 - Language:
- English
- Publication year:
- 2022
- Bibliographic description:
- Steć A., Jońca J., Waleron K., Waleron M., Płoska A., Kalinowski L., Wielgomas B., Dziomba S.: Quality Control of Bacterial Extracellular Vesicles with Total Protein Content Assay, Nanoparticles Tracking Analysis, and Capillary Electrophoresis// INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES -Vol. 23,iss. 8 (2022), s.4347-
- DOI:
- Digital Object Identifier (open in new tab) 10.3390/ijms23084347
- Sources of funding:
-
- Free publication
- Verified by:
- Gdańsk University of Technology
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