Light-Driven Artificial Cell Micromotors for Degenerative Knee Osteoarthritis

Area of Science:

• Biomimetic engineering
• Nanotechnology
• Biophysics

Background:

• Artificial cells offer potential for targeted therapies and advanced bio-interfaces.
• Micro/nanomotors provide capabilities for directed movement and localized action.
• Photosynthesis-inspired energy conversion is a key area in artificial systems.

Purpose of the Study:

• To construct a light-driven artificial cell micromotor.
• To achieve photosynthetic anabolism and intelligent directional movement.
• To investigate the potential of this system for improving cellular metabolism.

Main Methods:

• Assembly of phospholipid vesicles functionalized with F-ATP synthase and molybdenum disulfide (MoS₂) nanoparticles.
• Utilizing light as an energy source for MoS₂ photo-hydrolysis and proton generation.
• Leveraging proton gradients to drive ATP synthesis via ATP synthase.

Main Results:

• The artificial cell micromotor demonstrated light-guided directional movement.
• Photo-hydrolysis of MoS₂ nanoparticles generated a proton gradient, driving ATP production.
• Both in vitro and in vivo models showed increased intracellular ATP levels and improved chondrocyte metabolism.

Conclusions:

• The developed artificial cell micromotor integrates mobility and biosynthesis.
• This system shows promise as a next-generation functional bio-interface.
• The platform offers a novel approach for enhancing cellular functions and metabolic activity.