Effect of multi arm-PEG-NHS (polyethylene glycol n-hydroxysuccinimide) branching on cell adhesion to modified decellularized bovine and porcine pericardium
Literature Information
Sreypich Say, Mika Suzuki, Yoshihide Hashimoto, Tsuyoshi Kimura, Akio Kishida
Implanting physical barrier materials to separate wounds from their surroundings is a promising strategy for preventing postoperative adhesions. Herein, we develop a material that switches from an anti-adhesive surface to an adhesive surface, preventing adhesion in the early stage of transplantation and then promoting recellularization. In this study, 2-arm, 4-arm, and 8-arm poly(ethylene glycol) succinimidyl glutarate (2-, 4-, 8-arm PEG-NHS) were used to modify the surface of decellularized porcine and bovine pericardium. The number of free amines on the surface of each material significantly decreased following modification regardless of the reaction molar ratio of NH2 and NHS, the number of PEG molecule branches, and the animal species of the decellularized tissue. The structure and mechanical properties of the pericardium were maintained after modification with PEG molecules. The time taken for the PEG molecules to detach through hydrolysis of the ester bonds differed between the samples, which resulted in different cell repulsion periods. By adjusting the reaction molar ratio, the number of PEG molecule branches, and the animal species of the decellularized pericardium, the duration of cell repulsion can be controlled and is expected to provide an anti-adhesion material for a variety of surgical procedures.
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![4-[2-(3,4-Dihydro-2H-chromen-6-yl)-1,3-oxazol-5-yl]-1-(3-{[(2,5-dioxo-1-pyrrolidinyl)oxy]carbonyl}benzyl)pyridinium bromide structure 4-[2-(3,4-Dihydro-2H-chromen-6-yl)-1,3-oxazol-5-yl]-1-(3-{[(2,5-dioxo-1-pyrrolidinyl)oxy]carbonyl}benzyl)pyridinium bromide structure](https://static.chemtradehub.com/structs/155/155863-03-9-8183.webp)

