Photoannealing of Microgels to Form Heterogeneous Constructs

Abstract

Researchers at the University of California, Davis have developed a method for creating annealed microgel scaffolds using polyethylene glycol-vinyl sulfone, offering improved efficiency and shelf life.

Full Description

The technology is a novel method for creating annealed hydrogel constructs using 8-arm polyethylene glycol-vinyl sulfone (PEG-VS) microgels. The construct can be tailored to present different biochemical and biophysical properties. The PEG-VS microgels are initially synthesized with PEG-DT, leaving about 30% of the arms free for additional crosslinking at a later time to anneal the microgels. The microgels are then washed and exposed to UV light for annealing. The method is a significant improvement over existing methods, offering easier operation, less time consumption, and increased shelf life.

Applications

• Biomedical engineering for tissue scaffolding. 
• Drug delivery systems. 
• Regenerative medicine and stem cell research.

Features/Benefits

• Simplified method compared to using transglutaminase peptides. 
• Reduced time requirement for the annealing process. 
• Greater shelf life due to less susceptibility to oxidation. 
• Capability to create varied biochemical and biophysical constructs. 
• Addresses complexities and time consumption in annealing process of microgel scaffolds. 
• Addresses oxidation and decreased activity over time with substances like transglutaminase peptides.

Patent Status

Patent Pending