Multielectrode Spectroscopy Enables Rapid and Sensitive Molecular Profiling of Extracellular Vesicles.
Multielectrode Spectroscopy Enables Rapid and Sensitive Molecular Profiling of Extracellular Vesicles.
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DOI:
10.1021/acscentsci.1c01193
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发表时间:
2022-01-26
影响因子:
18.2
通讯作者:
Lee H
中科院分区:
文献类型:
--
作者:
Kilic T;Cho YK;Jeong N;Shin IS;Carter BS;Balaj L;Weissleder R;Lee H
Detecting protein markers in extracellular vesicles (EVs) is becoming a useful tool for basic research and clinical diagnoses. Most EV protein assays, however, require lengthy processes—conjugating affinity ligands onto sensing substrates and affixing EVs with additional labels to maximize signal generation. Here, we present an iPEX (impedance profiling of extracellular vesicles) system, an all-electrical strategy toward fast, multiplexed EV profiling. iPEX adopts one-step electropolymerization to rapidly functionalize sensor electrodes with antibodies; it then detects EV proteins in a label-free manner through impedance spectroscopy. The approach streamlines the entire EV assay, from sensor preparation to signal measurements. We achieved (i) fast immobilization of antibodies (<3 min) per electrode; (ii) high sensitivity (500 EVs/mL) without secondary labeling; and (iii) parallel detection (quadruple) in a single chip. A potential clinical utility was demonstrated by directly analyzing plasma samples from glioblastoma multiforme patients. We report an electrochemical approach that can rapidly immobilize affinity ligands on electrodes and detect extracellular vesicles in a label-free manner.
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影响因子:
10.2
作者:
López-Cobo S;Campos-Silva C;Moyano A;Oliveira-Rodríguez M;Paschen A;Yáñez-Mó M;Blanco-López MC;Valés-Gómez M
通讯作者:
Valés-Gómez M
影响因子:
17.1
作者:
Lee K;Fraser K;Ghaddar B;Yang K;Kim E;Balaj L;Chiocca EA;Breakefield XO;Lee H;Weissleder R
通讯作者:
Weissleder R
影响因子:
7.4
作者:
KONOPKA, SJ;MCDUFFIE, B
通讯作者:
MCDUFFIE, B
影响因子:
4.6
作者:
Kilic T;Valinhas ATS;Wall I;Renaud P;Carrara S
通讯作者:
Carrara S
影响因子:
4.1
作者:
Yang KS;Lin HY;Curley C;Welch MW;Wolpin BM;Lee H;Weissleder R;Im H;Castro CM
通讯作者:
Castro CM