Micro- and Nanopillar Chips for Continuous Separation of Extracellular Vesicles

Yuya Hattori, Taisuke Shimada, Takao Yasui, Noritada Kaji, Yoshinobu Baba

研究成果: ジャーナルへの寄稿記事

3 引用 (Scopus)

抄録

Micro- and nanopillar chips are widely used to separate and enrich biomolecules, such as DNA, RNA, protein, and cells, as an analytical technique and to provide a confined nanospace for polymer science analyses. Herein, we demonstrated a continuous accurate and precise separation technique for extracellular vesicles (EVs), nanometer-sized vesicles (typically 50-200 nm) currently recognized as novel biomarkers present in biofluids, based on the principle of electroosmotic flow-driven deterministic lateral displacement in micro- and nanopillar array chips. Notably, the easy-to-operate flow control afforded by electroosmotic flow allowed nanoparticles 50-500 nm in size, including EVs, to be precisely separated and enriched in a continuous manner. By observation of the flow behavior of nanoparticles, we found that electroosmotic flow velocity in the nanopillar arrays did not solely depend on counterion mobility on the surface of nanopillar chips, but rather showed a parabolic flow profile. This hydrodynamic pressure-free and easy-to-use separation and enrichment technique, which requires only electrode insertion into the reservoirs and electric field application, may thus serve as a promising technique for future precise and accurate EV analysis, reflecting both size and composition for research and potential clinical diagnostic applications.

元の言語英語
ページ(範囲)6514-6521
ページ数8
ジャーナルAnalytical chemistry
91
発行部数10
DOI
出版物ステータス出版済み - 5 21 2019

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Nanoparticles
Biomolecules
Biomarkers
Flow control
Flow velocity
Polymers
Hydrodynamics
Electric fields
RNA
Electrodes
DNA
Chemical analysis
Proteins

All Science Journal Classification (ASJC) codes

  • Analytical Chemistry

これを引用

Micro- and Nanopillar Chips for Continuous Separation of Extracellular Vesicles. / Hattori, Yuya; Shimada, Taisuke; Yasui, Takao; Kaji, Noritada; Baba, Yoshinobu.

:: Analytical chemistry, 巻 91, 番号 10, 21.05.2019, p. 6514-6521.

研究成果: ジャーナルへの寄稿記事

Hattori, Yuya ; Shimada, Taisuke ; Yasui, Takao ; Kaji, Noritada ; Baba, Yoshinobu. / Micro- and Nanopillar Chips for Continuous Separation of Extracellular Vesicles. :: Analytical chemistry. 2019 ; 巻 91, 番号 10. pp. 6514-6521.
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AU - Baba, Yoshinobu

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