4.8 Article

An ultraportable and versatile point-of-care DNA testing platform

期刊

SCIENCE ADVANCES
卷 6, 期 17, 页码 -

出版社

AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/sciadv.aaz7445

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资金

  1. National Natural Science Foundation of China [81430053, 81430054, 81972027, 31400087, 21778071]
  2. Chinese People's Liberation Army scientific research major projects [AWS14C003-2]
  3. Military Scientific Research Project of Army Medical University [2018XYY04]
  4. Suzhou Institute of Nano-Tech and Nano-Bionics [Y5AAS11001]
  5. Youth Innovation Promotion Association CAS [2015257]

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Point-of-care testing (POCT) has broad applications in resource-limited settings. Here, a POCT platform termed POCKET (point-of-care kit for the entire test) is demonstrated that is ultraportable and versatile for analyzing multiple types of DNA in different fields in a sample-to-answer manner. The POCKET is less than 100 g and smaller than 25 cm in length. The kit consists of an integrated chip (i-chip) and a foldable box (f-box). The i-chip integrates the sample preparation with a previously unidentified, triple signal amplification. The f-box uses a smartphone as a heater, a signal detector, and a result readout. We detected different types of DNA from clinics to environment to food to agriculture. The detection is sensitive (<10(3) copies/ml), specific (single-base differentiation), speedy (<2 hours), and stable (>10 weeks shelf life). This inexpensive, ultraportable POCKET platform may become a versatile sampleto-answer platform for clinical diagnostics, food safety, agricultural protection, and environmental monitoring.

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