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功能性水凝通过重新激发巨细胞M1并诱导细菌的铜样死亡来促进慢性传染性伤口愈合
Chao Xiang1,2, Chaoyu Pu1,2, XueMei Zhong3
1Department of Orthopedics, The Third Affiliated Hospital of Chongqing Medical University, 401120, Chongqing, China.
Materials today. Bio
|March 7, 2025
概括
这项研究提出了一种新的水凝系统,可以有效地对抗生物膜感染,并通过重新编程免疫细胞来增强伤口愈合. 创新的GelMA/CAM@g-C3N4材料促进组织再生,并对抗细菌生长.
科学领域:
- 生物材料科学 生物材料科学
- 再生医学是一种再生医学.
- 免疫学 免疫学 免疫学
背景情况:
- 与生物膜相关的感染阻碍了由于抗生素耐药性和免疫规避的伤口愈合.
- 巨细胞在伤口愈合中起着至关重要的作用,但在慢性感染中,它们的功能受到损害.
研究的目的:
- 开发一种功能化的伤口修复系统,能够破坏生物膜并重塑当地的免疫微环境.
- 评估GelMA/CAM@g-C3N4系统在促进慢性伤口愈合方面的有效性.
主要方法:
- 合成具有过氧化酶 (POD) 活性和铜酸盐微球 (CAM) 的g-C3N4.
- 将材料联合封装到GelMA水凝中,以创建GelMA/CAM@g-C3N4系统.
- 在体外和体内对生物相容性,抗生物膜活性,巨细胞两极分化和促进伤口愈合的评估.
主要成果:
- 凝MA/CAM@g-C3N4系统表现出良好的生物相容性,并促进了内皮细胞迁移和血管形成.
- 该系统将巨细胞两极分化为M1表型,恢复促炎功能并抑制金黄色葡萄球菌和大肠杆菌.
- 在体内研究表明,抑制了细菌生长,增强了血管生成,原沉积和改善了伤口再生.
结论:
- 开发的GelMA/CAM@g-C3N4水凝系统为慢性感染性伤口提供了一个有前途的治疗策略.
- 这种方法有效地解决了生物膜的挑战,并调节了免疫微环境,以改善伤口修复.
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