Detecting individual extracellular vesicles using a multicolor in situ proximity ligation assay with flow cytometric readout.

Detecting individual extracellular vesicles using a multicolor in situ proximity ligation assay with flow cytometric readout.
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DOI:
10.1038/srep34358
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发表时间:
2016-09-29
期刊:
影响因子:
4.6
通讯作者:
Kamali-Moghaddam M
Kamali-Moghaddam M
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Löf L;Ebai T;Dubois L;Wik L;Ronquist KG;Nolander O;Lundin E;Söderberg O;Landegren U;Kamali-Moghaddam M

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Flow cytometry is a powerful method for quantitative and qualitative analysis of individual cells. However, flow cytometric analysis of extracellular vesicles (EVs), and the proteins present on their surfaces has been hampered by the small size of the EVs – in particular for the smallest EVs, which can be as little as 40 nm in diameter, the limited number of antigens present, and their low refractive index. We addressed these limitations for detection and characterization of EV by flow cytometry through the use of multiplex and multicolor in situ proximity ligation assays (in situ PLA), allowing each detected EV to be easily recorded over background noise using a conventional flow cytometer. By targeting sets of proteins on the surface that are specific for distinct classes of EVs, the method allows for selective recognition of populations of EVs in samples containing more than one type of EVs. The method presented herein opens up for analyses of EVs using flow cytometry for their characterization and quantification.
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