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氧化驱动的铜稳态和骨质生成在缺陷再生使用l-氨酸装载的HKUST-1使用头骨缺陷再生

Feng Zhou¹, Zhaoyu Xu¹, Qingyi Wang²

¹State Key Laboratory of Oral Diseases & National Center for Stomatology & National Clinical Research Center for Oral Diseases, Department of Oral Implantology, West China Hospital of Stomatology, Sichuan University, Chengdu, 610041, Sichuan, China; Frontier Innovation Center for Dental Medicine Plus, West China Hospital of Stomatology, Sichuan University, Chengdu, 610041, Sichuan, China.

|July 22, 2025

概括

这项研究引入了一种新的策略,使用氧化 (NO) 预防由铜诱导的细胞死亡 (亡) 并增强骨修复. 开发的生物材料有效地促进骨质生成和骨愈合,同时保持抗菌性质.

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.
细胞的新陈代谢

背景情况:

铜对于骨组织工程至关重要,但在高度下会导致细胞死亡 (亡).
与氧化酸化相关的cuproptosis可以通过有氧糖解 (Warburg效应) 来抑制.
氧化 (NO) 促进葡萄糖分解和骨质生成,这表明有可能减轻cuproptosis.

研究的目的:

合成释放氧化 (NO) 的铜金属有机框架 (Cu-MOF),以抑制亡并促进骨修复.
为了研究NO对cuproptosis和骨质生成的影响背后的代谢机制.
在骨缺陷模型中评估NO释放生物材料的有效性.

主要方法:

合成一个封装l-arginine的Cu-MOF,用于持续的NO释放.
在体外评估 cuproptosis 抑制和骨质分化.
多个omics分析以阐明所涉及的代谢途径.
在体内评估骨缺陷修复,血管新生和炎症在凝甲基 (GelMA) 水凝.

主要成果:

合成的Cu-MOF有效抑制了cuproptosis,并促进了骨质生成.
多omics数据表明,NO高调节谷氨 (GSH) 合成,增强有氧糖解,并降低GABA突变的调节.
装有GelMA的生物材料 (LA@HK) 增强了骨修复,血管生成,减少了炎症,并保留了抗菌和机械特性.

结论:

氧化 (NO) 可以通过调节细胞代谢,特别是增强有氧糖解来减轻铜诱导的细胞毒性.
不释放NO的Cu-MOF策略显示了骨组织工程应用的巨大潜力.
这项工作为NO介导的骨质生成和骨再生提供了一个新的代谢途径.

关键词:

骨缺陷是一种骨缺陷.细胞代谢细胞代谢这种疾病叫做cuproptosis.金属有机框架的框架.氧化氧化是什么?

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