Su Yang, Ju Jingyi, Shen Chentao, Li Yanqi, Yang Wangshuo, Luo Xuelai, Wang Zhenxing, Zeng Jinhao, Liu Lu
Department of Gastrointestinal Surgery Center, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China.
Molecular Medicine center, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China.
Mater Today Bio. 2025 Mar 5;31:101636. doi: 10.1016/j.mtbio.2025.101636. eCollection 2025 Apr.
Developing hydrogels with wet-adhesion, immunomodulation and regenerative repair capabilities in intestinal repair remains a formidable challenge. In the present study, the development of an anti-inflammatory, wet-adhesive, decellularized extracellular matrix hydrogel produced using three-dimensional (3D) -printing technology is presented. This hydrogel, which integrates gelatin and dopamine, was demonstrated to display excellent wet-adhesion properties, fully harnessing the outstanding regenerative potential of the decellularized small-intestine matrix. Furthermore, the integration of Prussian Blue nanozymes imparted significant anti-inflammatory and antioxidant properties. Through modulating macrophage polarization, the hydrogel was not only found to enhance tissue repair, but also to substantially mitigate inflammation. experiments (namely, histopathological analyses using a rat model) demonstrated that this hydrogel was able to effectively enhance tissue regeneration and healing in models of intestinal damage. In conclusion, through the utilization of 3D-printing technology, the present study has shown that the precise manufacturing and customization of the hydrogel to various shapes and sizes of intestinal defects may be executed, thereby providing an innovative strategy for intestinal repair. This advanced hydrogel has therefore been shown to hold significant promise as a bioadhesive for both emergency repair and regenerative therapy.
开发具有湿粘附、免疫调节和再生修复能力的水凝胶用于肠道修复仍然是一项艰巨的挑战。在本研究中,展示了一种使用三维(3D)打印技术制备的抗炎、湿粘附、脱细胞细胞外基质水凝胶。这种整合了明胶和多巴胺的水凝胶被证明具有优异的湿粘附性能,充分利用了脱细胞小肠基质出色的再生潜力。此外,普鲁士蓝纳米酶的整合赋予了显著的抗炎和抗氧化性能。通过调节巨噬细胞极化,不仅发现该水凝胶能增强组织修复,还能显著减轻炎症。实验(即使用大鼠模型的组织病理学分析)表明,这种水凝胶能够有效地促进肠道损伤模型中的组织再生和愈合。总之,通过利用3D打印技术,本研究表明可以对水凝胶进行精确制造并定制成各种形状和尺寸的肠道缺损,从而为肠道修复提供了一种创新策略。因此,这种先进的水凝胶已被证明作为用于紧急修复和再生治疗的生物粘合剂具有巨大潜力。
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