将m6A-Glycolysis发现转化为疗法:基于GOQD的多功能生物活性支架可以在衰老时恢复骨修复
Zengguang Wang1,2, Tanjun Deng3, Hanwen Chang1,2
1Department of Orthopaedic Surgery, Shanghai Ninth People's Hospital, Shanghai JiaoTong University School of Medicine, Shanghai, 200011, P. R. China.
Small (Weinheim an der Bergstrasse, Germany)
|September 22, 2025
概括
衰老的骨再生由于干细胞命运的改变而失败,这与糖解问题有关. 在支架上用工程GOQD准糖解,可以恢复老老鼠的骨.
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.
- 细胞生物学 细胞生物学
背景情况:
- 衰老会通过改变介质干细胞 (BMSC) 的命运来损害骨再生.
- 糖溶解失调被确定为衰老的BMSCs (s-BMSCs) 功能障碍的一个关键因素.
- 在s-BMSCs中METTL3的下调影响ALDH3A1mRNA的稳定性和c-Myc降解,影响糖解.
研究的目的:
- 调查糖解在与衰老相关的骨再生失败中的作用.
- 设计一种使用石墨烯氧化物量子点 (GOQD) 调节s-BMSC命运并增强骨修复的治疗策略.
- 开发一个3D打印的脚手架,用GOQDs功能化,用于在老化模型中加速骨再生.
主要方法:
- 研究了在s-BMSCs中连接METTL3,ALDH3A1,c-Myc和糖解的分子机制.
- 工程 GOQDs 激活葡萄糖溶解流,抑制炎症,并促进血管新生在s-BMSCs.
- 制造了一个3D打印的β-TCP支架,通过聚多巴胺将其与GOQD功能化,并集成了BMSCs.
- 评估了GOQD功能化的支架在促进老鼠关键大小缺陷的骨再生中的有效性.
主要成果:
- 糖解向逆转s-BMSC命运,促进骨质生成和抑制脂肪生成.
- 工程GOQDs有效地激活了s-BMSCs中的糖溶性流.
- 与对照者相比,GOQD功能化的支架在老老鼠模型中显著加速了骨再生.
- 该构造表明细胞命运,炎症和血管生成的同时改善.
结论:
- 糖溶性调节是s-BMSC命运的关键决定因素,对于与衰老相关的骨再生至关重要.
- 在3D打印的脚手架中集成的工程GOQD提供了一种多功能生物治疗方法,用于老化中的骨修复.
- 这一策略有效地解决了细胞功能障碍以及老化骨缺陷中的促炎,抗血管原微环境.
更多相关视频
09:34Visualizing Angiogenesis by Multiphoton Microscopy In Vivo in Genetically Modified 3D-PLGA/nHAp Scaffold for Calvarial Critical Bone Defect Repair
Published on: September 7, 2017
9.8K
05:32In Vivo Osteo-organoid Approach for Harvesting Therapeutic Hematopoietic Stem/Progenitor Cells
Published on: February 16, 2024
886
相关概念视频
Stem Cell Therapy for Tissue Regeneration
4.6K
Stem cell therapy is a method used in regenerative medicine to repair and restore function to damaged tissues and organs. Stem cells have the potential to proliferate and differentiate into various tissue types, making them ideal candidates for tissue regeneration. For example, hematopoietic stem cell transplants are commonly used in blood cancer treatment to replenish damaged bone marrow and restore healthy blood cells.
Types of Stem Cells used in Stem Cell Therapy
The two main cell...
Types of Stem Cells used in Stem Cell Therapy
The two main cell...
4.6K
Tissue Renewal without Stem Cells
2.1K
After cellular or tissue damage, the resident stem cells present in the human body can locally repair and regenerate the damaged tissue or organ. However, even though some tissues do not have stem cells, they can repair and regenerate with the help of pre-existing cells. For example, beta cells of the pancreas and hepatocytes of the liver can divide to renew and regenerate the tissue. Here, both cell division and cell death are well regulated by homeostasis.
However, failure of such a system...
However, failure of such a system...
2.1K
