Histamine-Responsive Hydrogel Biosensors Based on Aptamer Recognition and DNA-Driven Swelling Hydrogels

Area of Science:

• Biotechnology
• Chemical Sensing
• Materials Science

Background:

• Biosensing technologies are crucial for detecting chemical substances in modern life.
• Aptamers, short nucleic acid sequences, offer molecular recognition capabilities for biosensing.
• Combining aptamers with hydrogels presents opportunities for simplified sensing applications.

Purpose of the Study:

• To develop a novel hydrogel-based biosensor for the rapid detection of histamine.
• To leverage aptamer recognition and DNA-driven hydrogel swelling for enhanced sensing performance.
• To establish a fast and significant detection method for histamine, a foodborne toxin.

Main Methods:

• Utilized aptamer recognition for specific target binding.
• Engineered DNA-driven swelling hydrogels for signal amplification.
• Integrated aptamer recognition and hydrogel swelling via DNA molecular reactions.
• Tested the biosensor's efficacy for histamine detection.

Main Results:

• Successfully developed a hydrogel-based biosensor system.
• Achieved rapid detection of histamine within 10 minutes with statistical significance.
• Demonstrated a direct link between aptamer recognition and DNA-driven hydrogel swelling for sensing.

Conclusions:

• The proposed biosensor enables rapid and significant detection of histamine.
• The aptamer-hydrogel system offers a versatile platform for detecting various chemical targets.
• This technology broadens the application scope of hydrogel-based biosensors.