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Total Bioaerosol Detection by Split Aptamer-Based Electrochemical Nanosensor Chips.

Rui Zhang1, Pu Wang1, Yangyang Chang1

  • 1School of Environmental Science and Technology, Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education), Dalian POCT Laboratory, Dalian University of Technology, Dalian 116024, China.

Analytical Chemistry
|November 15, 2022
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Summary
This summary is machine-generated.

A novel electrochemical nanosensor chip detects adenosine triphosphate (ATP) in bioaerosols, enabling early warning for infectious disease control. This biosensor offers rapid, sensitive detection crucial for public and animal health.

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Area of Science:

  • Biotechnology
  • Environmental Science
  • Analytical Chemistry

Background:

  • Bioaerosols pose significant risks to human and livestock health by spreading microorganisms.
  • Early detection and management of bioaerosols are critical for preventing disease transmission.

Purpose of the Study:

  • To develop a rapid and sensitive electrochemical nanosensor chip for detecting adenosine triphosphate (ATP) in bioaerosols.
  • To utilize split aptamer (SA) technology integrated with ZIF-8@MXene composites for enhanced detection.

Main Methods:

  • Development of a split aptamer-based electrochemical nanosensor chip (SAE-nChip).
  • Utilized ZIF-8@MXene composites for high aptamer-binding capacity and efficient electron transfer.
  • Employed target-induced assembly of split DNA aptamers on the chip surface for ATP detection.

Main Results:

  • The SAE-nChip demonstrated a low detection limit of 10 pM for ATP.
  • Successfully detected ATP in both cultured microorganisms and real-world collected bioaerosols.
  • The nanosensor provided rapid and sensitive detection of biochemical targets in bioaerosols.

Conclusions:

  • The developed SAE-nChip offers a versatile platform for ubiquitous biochemical target detection in bioaerosols.
  • Interfacing DNA aptamers with MXene-based composites is a promising strategy for biosensing applications.
  • This technology contributes to improved early warning systems for bioaerosol-related health threats.