Ultrasensitive mycotoxin detection by STING sensors

Area of Science:

• Biosensor technology
• Nanotechnology
• Analytical chemistry

Background:

• Signal transduction by ion nano-gating (STING) is a label-free biosensor.
• It identifies DNA and proteins using functionalized quartz nanopipettes.
• Analyte discrimination is based on size, shape, and charge density.

Purpose of the Study:

• To demonstrate the ultrasensitive detection of HT-2 toxin using STING sensors.
• To compare STING sensor capabilities with conventional sandwich assay techniques.
• To highlight the advantages of STING technology, including ease of fabrication and cost-effectiveness.

Main Methods:

• Fabrication of functionalized quartz nanopipettes at the bench.
• Utilizing STING technology for label-free analyte detection.
• Performing ultrasensitive detection of HT-2 toxin.

Main Results:

• STING sensors achieved an ultrasensitive detection limit of 100 fg/ml for HT-2 toxin.
• The technology demonstrated effective analyte discrimination based on physical properties.
• STING sensors offer a cost-effective and rapid alternative to conventional assays.

Conclusions:

• STING technology provides a versatile and accessible platform for ultrasensitive biosensing.
• The benchtop fabrication of STING sensors significantly reduces cost and turnaround time.
• STING sensors show promise for various applications in biomolecular detection and diagnostics.