A Single Extracellular Vesicle (EV) Flow Cytometry Approach to Reveal EV Heterogeneity.

A Single Extracellular Vesicle (EV) Flow Cytometry Approach to Reveal EV Heterogeneity.
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DOI:
10.1002/anie.201806901
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发表时间:
2018-11-26
期刊:
Angewandte Chemie (International ed. in English)
影响因子:
--
通讯作者:
Zhong W
Zhong W
中科院分区:
其他
文献类型:
--
作者:
Shen W;Guo K;Adkins GB;Jiang Q;Liu Y;Sedano S;Duan Y;Yan W;Wang SE;Bergersen K;Worth D;Wilson EH;Zhong W

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细胞外囊泡(extracellular vesicles,EVs)积极参与细胞间通讯和病理过程。研究EV的分子特征是揭示其生物学功能和临床价值的关键,然而,由于EV的尺寸小于100 nm,每个EV携带的生物分子量低,以及群体异质性大,这极大地阻碍了EV的分子特征。在这里,我们报告了单EV流式细胞术分析技术,该技术首次在常规流式细胞仪中实现了单EV计数和表型分析,通过每个EV上的DNA纳米结构的靶向启动工程(TIE)实现。通过照亮单个EV上的多个标记,我们揭示了源自几种乳腺癌细胞系的EV的分子特征之间的统计学显著差异,并成功地识别了异质EV群体中的癌细胞来源的EV。因此,我们的方法在各种生物和生物医学应用中具有巨大的潜力。通过DNA纳米结构的靶启动工程化(TIE)实现的单个细胞外囊泡(EV)流式细胞术分析揭示了单个囊泡的独特分子特征并区分EV亚群。
Extracellular vesicles (EVs) actively participate in intercellular communication and pathological processes. Studying the molecular signatures of EVs is the key to reveal their biological functions and clinical values, which, however, is greatly hindered by their sub-100-nm dimensions, the low quantities of biomolecules each EV carries, and the large population heterogeneity. Here, we report the single-EV Flow Cytometry Analysis technique that realizes single EV counting and phenotyping in a conventional flow cytometer for the first time, enabled by Target-Initiated Engineering (TIE) of DNA nanostructures on each EV. By illuminating multiple markers on single EVs, we reveal statistically significant differences among the molecular signatures of EVs originated from several breast cancer cell lines, and successfully recognize the cancer cell-derived EVs among the heterogeneous EV populations. Thus, our approach holds great potential for various biological and biomedical applications. Single extracellular vesicle (EV) flow cytometry analysis enabled by target initiated engineering (TIE) of DNA nanostructures reveals unique molecular signatures of individual vesicles and differentiates EV sub-populations.
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