丝虫子在伤口包装中的生物设计:一种具有自我愈合和抗菌性能的新水凝
Dong Zhang1, Lei Zhao2, Xiaohu Cui3
1Key Laboratory of Biotechnology and Bioengineering of State Ethnic Affairs Commission, Biomedical Research Center, Northwest Minzu University, Lanzhou 730030, PR China; College of Chemical Engineering, Northwest Minzu University, Lanzhou 730030, PR China.
International journal of biological macromolecules
|September 29, 2024
概括
这项研究开发了一种新的可注射水凝,灵感来自丝虫子,用于先进的伤口愈合. 这种仿生材料具有自我愈合,抗微生物特性,并显著加速皮肤伤口的关闭.
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.
- 伤口愈合技术 伤口愈合技术
背景情况:
- 开发具有注射性,自组装性和自我愈合性质的多功能水凝用于伤口敷料是具有挑战性的.
- 现有的伤口包裹往往缺乏全面的功能,如强大的抗菌活性和有效的皮肤再生支持.
研究的目的:
- 创建一个可注射,自我愈合的四分制水凝,具有抗菌性质,可加速皮肤伤口愈合.
- 模仿丝虫子的自然保护机制,以提高伤口合性能.
主要方法:
- 基于丝纤维素/丝素 (SF/SS) 的水凝的制造,使用1,2-二米里斯托伊尔-sn-甘油-3-酸盐 (DMPG) 作为物理交叉链接剂.
- 纳入银纳米颗粒 (AgNPs) 来赋予抗菌能力.
- 评估水凝的特性,包括水友性,机械强度,胀,以及体外/体内活体伤口愈合效率.
主要成果:
- 仿生水凝表现出极好的水友性 (水接触角度为37-52°),增强机械阻力 (4倍纯SF水凝),以及胀 (3倍纯SF水凝).
- 达到超过98%的细菌抑制率,显示出强大的抗菌作用.
- 在体内研究显示,小鼠的炎症性细胞因子 (TNF-α,IL-1β>25%) 显著降低,并加速伤口愈合 (到第14天伤口面积减少17%).
结论:
- 开发的SF/SS/AgNPs水凝有效地模仿丝虫,提供了一个有前途的多功能伤口包裹.
- 水凝的自我愈合,可注射和抗微生物特性,加上其减少炎症和促进愈合的能力,突出了其治疗皮肤伤口的治疗潜力.
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