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A microfluidic device integrating magnetic stirring with tangential flow for high-efficiency isolation of small extracellular vesicles

  • Hao Zhong
  • , Zeyin Mao
  • , Xuwen Li
  • , Anni Deng
  • , Yihao Zhu
  • , Shihong Wang
  • , Leyang Huang
  • , Jianxin Zhao
  • , Wenqi Lv
  • , Yixuan Shi
  • , Qin Huang
  • , Yabo Zhai
  • , Chenzhou Hui
  • , Xianbo Luo
  • , Li Ma
  • , Rongxin Fu
  • , Xiongjun Ye*
  • , Guoliang Huang*
  • *此作品的通讯作者
  • Tsinghua University
  • Chinese Academy of Medical Sciences
  • Zunyi Medical University
  • Beijing Institute of Technology

科研成果: 期刊稿件 › 文章 › 同行评审

摘要

Small extracellular vesicles (sEVs), which are ubiquitously present in bodily fluids, hold significant promise as biomarkers for disease diagnosis and targeted therapy. However, their isolation remains challenging due to their small size (typically < 200 nm) and the complexity of biological fluids. This study presents a novel microfluidic strategy integrating Magnetic Stirring with Tangential Flow Filtration (MS-TFF). The automated, portable device (palm-sized, 12.5 cm × 11.1 cm × 6.25 cm) features user-friendly operation: inserting the chip into a slot and closing the lid initiates automated sEV extraction. The system processes 10 mL of morning urine or cell culture supernatant within ∼40 min. Compared to ultracentrifugation (UC), MS-TFF reduces processing time from ∼4 h to ∼40 min while achieving a 6-fold higher sEV yield. Clinical validation using urine from 16 subjects (6 healthy/10 prostate cancer patients) enabled quantitative *KLK3/PCA3* RNA biomarker detection, achieving AUC = 0.93 for cancer diagnosis, confirming its diagnostic potential.

源语言英语
期刊论文编号138898
期刊Sensors and Actuators, B: Chemical
卷447
DOI
出版状态已出版 - 15 1月 2026

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