单原子工程植入物材料具有类似乳酸脱酶的活性,用于可持续的骨修复和再生
Jiahui Pei1,2, Jie Zhao3,4, Miaomiao Gao3,4
1Tianjin Key Laboratory of Brain Science and Neural Engineering, Academy of Medical Engineering and Translational Medicine, Tianjin University, Tianjin 300072, China.
Nano letters
|January 16, 2026
概括
具有乳酸脱酶类活性的工程植入物通过增强骨再生和重塑来加速骨折愈合. 这种新的方法改善了从修复到重塑阶段的过渡,为骨折固定提供了有前途的解决方案.
科学领域:
- 生物材料科学 生物材料科学
- 整形外科手术 整形外科手术
- 再生医学是一种再生医学.
背景情况:
- 骨折带来了重大的临床挑战,目前的固定材料缺乏足够的骨质诱导性质.
- 由乳酸脱酶 (LDH) 和NADH氧化酶 (NOX) 驱动的代谢重编程对于增强骨质分化和骨再生至关重要.
研究的目的:
- 开发一种单原子工程植入物,具有增强的乳酸脱酶 (LDH) 类活性和持续的生物活性,以改善骨折愈合.
- 在临床前模型中调查植入物在促进骨折愈合从修复到重塑阶段的过渡中的有效性.
主要方法:
- 开发一种单原子工程植入物,其内在的生物催化功能类似于LDH.
- 在小鼠和子模型中评估植入物对骨折愈合的影响.
- 在愈合过程中分析关键的分子标记物 (CTX-1,Sox9) 和细胞过程 (通过Piezo1通道输入,氧化还原微环境).
主要成果:
- 工程植入物有效调节炎症和修复阶段,降低CTX-1的调节以抑制再吸收,并提高Sox9的调节以转化冠状细胞.
- 在修复阶段,CTX-1上调促进了骨重塑.
- 5周后,植入物通过Piezo1通道促进了的流入,并创造了有利的氧化还原微环境,增强了骨质生成.
结论:
- 具有卓越的LDH类活性的单原子工程植入物为骨折固定提供了一种新的策略.
- 这些植入物表现出持续的生物催化功能,显著增强骨再生,并通过改善代谢和细胞调节促进有效的骨折愈合.
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