RRC ID 69379
著者 Mubarok W, Qu Y, Sakai S.
タイトル Influence of Hydrogen Peroxide-Mediated Cross-Linking and Degradation on Cell-Adhesive Gelatin Hydrogels.
ジャーナル ACS Appl Bio Mater
Abstract Hydrogen peroxide (H2O2) is widely used for the gelation of aqueous solutions of gelatin derivatives with phenolic hydroxyl groups (Gelatin-Ph) catalyzed by horseradish peroxidase (HRP). Apart from this, H2O2 is known to cause degradation/depolymerization of various polymers. Here, we prepared Gelatin-Ph hydrogels from solutions containing Gelatin-Ph and HRP by continuously supplying H2O2 from the gas phase and investigated the mechanical properties of resultant hydrogels and the behaviors of rat fibroblast and human adipose-derived stem cells on them. Young's modulus of the hydrogel obtained from 5 w/v % Gelatin-Ph and 1 and 5 U/mL HRP increased when the exposure time to air containing H2O2 (16 ppm) was extended from 15 to 30 min. However, further prolonging the exposure time to 60 min reduced Young's modulus to the same magnitude as for the hydrogels exposed to air containing H2O2 for 15 min. Interestingly, the cell length and aspect ratio of the cells continued to increase, as the exposure time was extended, without reflecting the decrease in Young's modulus. These results indicate that when preparing Gelatin-Ph hydrogels through HRP/H2O2-mediated gelation, it is necessary to consider the effect of the degradation of Gelatin-Ph caused by H2O2 on the mechanical properties of the resultant hydrogels and the behaviors of cells on them.
巻・号 4(5)
ページ 4184-4190
公開日 2021-5-17
DOI 10.1021/acsabm.0c01675
PMID 35006831
MeSH Animals Biocatalysis Biocompatible Materials / chemistry Biocompatible Materials / metabolism* Cell Adhesion Cell Line Cross-Linking Reagents / chemistry Cross-Linking Reagents / metabolism* Gelatin / chemistry Gelatin / metabolism* Horseradish Peroxidase / metabolism Humans Hydrogels / chemistry Hydrogels / metabolism* Hydrogen Peroxide / chemistry Hydrogen Peroxide / metabolism* Materials Testing Molecular Structure Particle Size Rats
リソース情報
ヒト・動物細胞 3Y1