Journal
ANALYTICA CHIMICA ACTA
Volume 1232, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.aca.2022.340483
Keywords
Aptamer; Electrochemical sensing; Pathogens; Information security; Molecular cryptography; Molecular steganography
Categories
Funding
- National Natural Science Foundation of China [32201108]
- Hunan Provincial Natural Science Foundation of China [2021JJ40640]
- Scientific and Technological Plan Project of Changsha of China [KQ2106029]
- Outstanding Youth Project of Hunan Education Department [19B374]
- Innovation Platform Open Fund Project for Universities of Hunan Province [20K015]
- Project of Improving the Basic Scientific Research ability of Young College Teachers in Guangxi [2021KY1953]
- Training Object of Young Backbone Teachers in Colleges and Universities in Hunan Province
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This study demonstrates the integration of DNA encoding and molecular recognition with electrochemistry for the detection of fish pathogens and molecular information encryption. The electrochemical system enables rapid and accurate detection of fish pathogens while protecting encoded information hidden in DNA. This system has the potential to advance molecular-level digitization technology.
DNA with data encoding and molecular recognition is rarely used in combination with electrochemistry for multipurpose integrated applications (especially in sensing, information communication and security). Herein, we demonstrated an electrochemical aptasensing, information communication and safety system for detection of fish pathogens (Aeromonas hydrophila or Edwardsiella tarda) and molecular information encryption and hiding. Two fish pathogens can be easily and quickly detected by electrochemistry, respectively, with high selectivity and sensitivity (detection limit lower than 1 cfu/mL) without the need for traditional time-consuming biochemical culturing process. The specific interaction of the probe (DNA aptamer) with targets (pathogens) on the tiny and imperceptible electrochemical platform provides protection for hiding DNA aptamers containing the encoded message, but also offers a foundation for developing of molecular cryptography and steganography. This electrochemical system, which is similar to mail communication, does not record information on paper, but a molecular mail that records information through DNA and reads information using electrochemical sensing, or more precisely, molecular electrochemical mail (namely molecular 'email'). Our study proved that the combi-nation of the recognition and encoding capabilities of DNA aptamers with electrochemistry can open a new door for molecular-level digitization technology. In the future, large-capacity, easy-to-operate, resettable, and flexible molecular crypto-steganography will be developed for molecular cascade communication and control
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