Controlling Coagulation in Blood with Red Light

Area of Science:

• Biochemistry
• Biotechnology
• Medical Chemistry

Background:

• Precise control over blood coagulation is critical in clinical settings.
• Rapid reversal of anticoagulation is often required for medical procedures.
• Existing methods for controlling anticoagulation may have limitations.

Purpose of the Study:

• To develop a novel anticoagulant aptamer with light-inducible deactivation.
• To enable precise temporal and spatial control over anticoagulation.
• To restore natural blood clotting capabilities rapidly using external stimuli.

Main Methods:

• Modification of a thrombin-binding aptamer using a red-light photocleavable linker (Cy7 derivative).
• Synthesis via copper-catalyzed Click chemistry.
• In vitro testing of aptamer deactivation and coagulation restoration in human blood using red light (660 nm).

Main Results:

• Successful synthesis of the modified thrombin-binding aptamer.
• Demonstration of aptamer deactivation upon exposure to red light (660 nm).
• Restoration of natural blood coagulation in human blood after light-induced aptamer inactivation.

Conclusions:

• A light-responsive anticoagulant aptamer was successfully engineered.
• Red light provides an effective external trigger for rapid anticoagulation reversal.
• This technology holds potential for precise control of anticoagulation in clinical applications.