Characterization of structural changes in aptamer films for controlled release nanodevices

Area of Science:

• Biotechnology
• Nanotechnology
• Biosensing

Background:

• DNA aptamers are versatile molecules with potential applications in nanodevices.
• Stimulus-responsive aptamers can function as gatekeepers for controlled release.
• Understanding conformational changes is crucial for designing effective aptamer-based nanodevices.

Purpose of the Study:

• To determine the dimensional changes in DNA aptamers.
• To investigate aptamer conformational changes upon binding adenosine-5'-monophosphate (AMP).
• To assess the potential of these aptamers as stimulus-responsive gatekeepers in nanodevices.

Main Methods:

• Utilized acoustic wave-based sensors for high-sensitivity detection.
• Performed molecular recognition experiments with adenosine-5'-monophosphate (AMP) as the target molecule.
• Quantified the conformational changes in DNA aptamers.

Main Results:

• Successfully measured the conformational changes of DNA aptamers.
• Demonstrated that these changes occur upon molecular recognition of AMP.
• Established a correlation between molecular binding and dimensional alterations in aptamers.

Conclusions:

• The study quantifies DNA aptamer conformational changes, validating their role as stimulus-responsive elements.
• Acoustic wave sensing provides a sensitive method for characterizing aptamer behavior.
• These findings support the development of DNA aptamer-based controlled delivery nanodevices.