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抗氧化功能双网/TA动态水凝通过稳定细胞表型促进软骨再生
Xu Wu1,2, Honglei Wang1,2, Chenlong Li1,2
1Department of Facial Plastic and Reconstructive Surgery, Eye and ENT Hospital, Fudan University, Shanghai, China.
Materials today. Bio
|September 2, 2025
概括
这项研究表明,减少软骨细胞的有氧代谢会稳定其表型,改善软骨再生. 一个抗氧化水凝支架有效地保护了细胞功能,并增强了体内组织的修复.
科学领域:
- 生物材料科学
- 复原医学
- 细胞生物学
背景情况:
- 软骨缺陷很常见, 组织工程旨在再生软骨.
- 在体外扩张过程中失去了状细胞的表型,阻碍了工程软骨的临床使用.
- 冠状细胞的代谢变化会影响表型稳定性,但这些变化和调节策略尚未得到研究.
研究的目的:
- 在体外扩张过程中研究肌肉细胞的代谢重编程.
- 探索新陈代谢调节是否可以稳定肌肉细胞表型以进行组织工程.
- 开发和评估用于软骨再生的抗氧化水凝支架.
主要方法:
- 单细胞和批量转录组分析分析了淋巴细胞的代谢变化.
- 设计了一种双网 (DN) 水凝支架,使用酸 (TA) 具有抗氧化特性.
- 在DN-TA水凝中培养过渡3 (P3) 软骨细胞,并在裸体小鼠体内植入后评估软骨再生.
主要成果:
- 在体外扩张过程中,冠状细胞从糖解转向氧化化主导.
- 通过激活HIF-1和减少活性氧物种 (ROS),DN-TA水凝保留了细胞的表型.
- 皮下植入DN-TA支架促进了显著的体内软骨再生,增强了细胞外基质沉积和成熟的软骨形成.
结论:
- 降低有氧代谢稳定了软骨细胞的表型,这对软骨组织工程至关重要.
- 开发的DN-TA水凝是增强功能性软骨再生的有希望的生物材料.
- 代谢调节提供了一种优化基于软骨细胞的软骨组织工程的新策略.
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