自愈水凝胶
材料科学
壳聚糖
透明质酸
组织工程
硫酸软骨素
高分子化学
羧甲基纤维素
动态力学分析
化学工程
碳二亚胺
聚合物
聚电解质
生物相容性
核化学
生物医学工程
复合材料
化学
钠
糖胺聚糖
生物化学
医学
生物
工程类
冶金
遗传学
作者
Nadieh KhaliliJafarabad,Aliasghar Behnamghader,Mohammad Taghi Khorasani,Masoud Mozafari
摘要
Abstract Hydrogels play a key role in cartilage tissue engineering (CTE) and cell transplantation. Idealy, the hydrogels designed for CTE should facilitate the formation of cartilage ECM, cilinically. However, challenges remain to engineer hydrogels with controllable responses, fast‐self recovery, and high stability. In the present study, a dual crosslinked hydrogel system based on the electrostatic and ionic bonds by mixing polymers composed of hyaluronic acid (HA), chondroitin sulfate (CS), and carboxymethyl chitosan (CMC) combined with platelet‐rich plasma (PRP) was successfully prepared. To increase the stability of hydrogel, 1‐Ethyl‐3‐(3‐dimethylamino propyl‐carbodiimide hydrochloride (EDC)/N‐hydroxy‐succinimide (NHS) was used as the crosslinking agent. The results revealed more stability of dual crosslinking hydrogel (HC54) due to proper stoichiometric ratio between polymers components and the crosslinking agent. According to the rheology results, a non‐Newtonian and viscoelastic behavior was recognized for all hydrogels and the highest mechanical property (modulus) of HC54 hydrogel was confirmed. Based on the SEM micrographs and weight loss analysis, the lowest degradation rate was observed for the HC54 hydrogel after immersion in phosphate buffered saline solution. PRP release from the hydrogel was analyzed with the Bradford assay method and a cumulative release of 50 percent during 15 days was found. Finally, the MTT assay conducted on dual crosslinked HA/CS/CMC hydrogel with and without PRP both demonstrated cytocompatibility of hydrogel while the presence of PRP enhanced the cell viability.
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