生物相容性
材料科学
壳聚糖
活性氧
自愈水凝胶
心室重构
表面改性
生物医学工程
血管生成
生物物理学
心肌梗塞
纳米技术
化学
心脏病学
生物化学
癌症研究
生物
医学
高分子化学
冶金
物理化学
作者
Zhentao Li,Qian Li,Weidong Cao,Jiamian Zhan,Yutong He,Xianglong Xing,Chengbin Ding,Leyu Wang,Xiaozhong Qiu
标识
DOI:10.1002/adfm.202312631
摘要
Abstract Hydrogel‐based engineered cardiac patches (ECP) hold great promise as potential treatment options for myocardial infarction (MI). However, optimizing the preparation of ECP with better biocompatibility, mechanical stability, and adaptation to MI repair remains a challenge. In this study, a chitosan (CS) hydrogel with good mechanical robustness through programmed control of hydrogen bonding is constructed to adapt to the continuous beating of myocardial tissue. With the synergistic effects of lipoic acid (TA), proanthocyanidins (PAs), and Eu 3+ , a functional platform capable of improving mitochondrial function, antioxidation, and pro‐vascularization is further constructed for the adaptive repair of the MI microenvironment. The fabricated functionalized chitosan hydrogel (CS/TA@PAs‐Eu) possessed good mechanical stability and ionic conductivity, showing the potential for long‐term adaptation to myocardial tissue pulsation. Also, the CS/TA@PAs‐Eu hydrogel promoted cardiomyocytes (CMs) maturation and functionalization, and effectively improved mitochondrial function, scavenged reactive oxygen species (ROS) as well as promoted angiogenesis. Animal studies indicated that the CS/TA@PAs‐Eu hydrogel can perform adaptive repair of MI to prevent left ventricular (LV) remodeling and restore cardiac function. This study highlights a functionalized hydrogel ECP with good biocompatibility and mechanical robustness for the adaptive repair of MI.
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