在LL-37和双酸盐联合输送的3D支架上,具有抗微生物和抗吸收活性,用于骨再生
Peng Ye1, Yusheng Yang2, Ying Qu2
1Department of Orthopedics, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, 400038, China; Department of Emergency, Affiliated Hospital of Zunyi Medical University, Zunyi, Guizhou 563000, China.
International journal of biological macromolecules
|July 26, 2024
概括
这种新的3D支架结合了抗微生物和骨再生特性,用于治疗传染性骨缺陷. 它有效地减少细菌,并在临床前模型中促进骨愈合.
科学领域:
- 生物材料科学 生物材料科学
- 组织工程是组织工程.
- 纳米技术纳米技术
背景情况:
- 骨感染在骨科治疗中带来了重大挑战.
- 现有的治疗方法往往难以同时治疗感染并促进骨再生.
- 在骨组织工程中,对先进的生物材料有着至关重要的需求.
研究的目的:
- 开发和评估一种新的3D支架,用于同时治疗骨感染和再生.
- 将抗微生物和抗吸收剂纳入多孔支架结构.
- 为了研究开发的脚手架的体外和体内疗效.
主要方法:
- 通过冷干燥制造3D脚手架,使用丝纤维素,奇托,纳米酸,LL-37抗菌和帕米德罗酸盐.
- 使用SEM和FTIR对脚手架形态和化学完整性的表征.
- 在体外对黄金葡萄球菌和Pseudomonas aeruginosa进行抗菌检测.
- 在感染性骨缺陷的小鼠模型中的体内评估,包括RNA测序.
主要成果:
- 脚手架呈现出适合细胞透和营养物质扩散的多孔结构.
- 已证明对测试的病原体具有显著的抗微生物疗效.
- 在体内研究表明,减少炎症,减少细菌负荷,增强骨再生.
- RNA测序揭示了参与骨愈合和免疫反应的基因的调制.
结论:
- 开发的3D脚手架有效抑制细菌生长,并支持骨再生.
- 它作为治疗传染性骨缺陷的治疗候选人具有显著的前景.
- 需要进一步的研究来优化治疗剂的释放,并评估临床适用性.
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