An aptamer-functionalized chemomechanically modulated biomolecule catch-and-release system.

Area of Science:

• Biochemistry
• Biomedical Diagnostics
• Environmental Analysis

Background:

• Efficient extraction of biomolecules is crucial for various scientific and diagnostic applications.
• Existing methods often lack efficiency or can be destructive to the target molecules.
• Biological systems offer inspiration for synchronized capture, transport, and release mechanisms.

Purpose of the Study:

• To design and demonstrate a robust chemomechanical sorting system for concerted catch and release of target biomolecules.
• To achieve efficient and non-destructive separation of specific biomolecules from solution mixtures.
• To showcase the system's stability and reusability for practical applications.

Main Methods:

• Development of a hybrid system with target-specific binding sites on microscopic fins within a responsive hydrogel.
• Utilizing pH-dependent binding of a thrombin-specific aptamer synchronized with hydrogel volume changes.
• Implementation in a biphasic microfluidic regime for controlled molecule transport and separation.

Main Results:

• Demonstrated effective separation of thrombin with quantitative sorting efficiency.
• Achieved non-destructive separation, preserving the integrity of the target biomolecules.
• Showcased the system's stability and amenability to multiple solution recycling.

Conclusions:

• The developed chemomechanical system offers a novel and efficient approach for biomolecule separation.
• The synchronized mechanism provides precise control over molecule capture, transport, and release.
• This technology has significant potential for applications in biochemistry, environmental analysis, and biomedical diagnostics.