Enzymatic microbubble robots

Area of Science:

• Biomedical Engineering
• Nanotechnology
• Robotics

Background:

• Current microrobotic systems lack the multifunctionality required for advanced biomedical applications.
• There is a growing demand for intelligent, steerable, and biodegradable microrobots in medicine.

Purpose of the Study:

• To develop novel enzymatic microbubble robots with enhanced capabilities for biomedical applications.
• To demonstrate the potential of these robots for in vivo imaging, targeting, and therapeutic delivery.

Main Methods:

• Engineered microrobots with natural protein shells modified with urease for autonomous propulsion.
• Incorporated internal microbubbles as ultrasound contrast agents for imaging and navigation.
• Integrated magnetic nanoparticles for guided motion and catalase for chemotaxis towards tumor sites.
• Utilized focused ultrasound to trigger shell collapse and enhance therapeutic payload penetration.

Main Results:

• Demonstrated steerable motion, biodegradability, and high in vivo imaging contrast.
• Successfully targeted tumor sites using magnetic guidance and chemotaxis.
• Achieved enhanced therapeutic payload penetration and significant antitumour effects in vivo.

Conclusions:

• Enzymatic microbubble robots represent a multifunctional platform with significant potential for medical interventions.
• This technology offers improved deep tissue imaging, precise targeting, and enhanced therapeutic efficacy.
• The developed microrobots could transform precision therapies and revolutionize medical treatments.