自组装的肌器官驱动组织再生
Tianshun Fang1,2, Hong Zhang3, Yuanhao Xie1,4,5
1Department of Orthopedic Surgery of Sir Run Run Shaw Hospital, and Liangzhu Laboratory, Zhejiang University School of Medicine, Hangzhou, 310058, China.
Advanced science (Weinheim, Baden-Wurttemberg, Germany)
|August 29, 2025
概括
科学家设计出大型可移植的肌器官来改善肌的修复. 这些工程组织促进干细胞的保留和增强机械特性,以便在受伤后更好地恢复功能.
科学领域:
- 复原医学
- 生物材料工程
- 干细胞生物学
背景情况:
- 由于内源干细胞有限,肌损伤会阻碍组织再生.
- 恢复肌结构和功能需要有效的基于细胞的疗法.
- 在实验室中进行大规模的,可移植的干细胞衍生组织是至关重要的.
研究的目的:
- 开发用于再生医学的厘米级可移植肌器官.
- 在有机体内优化干细胞自我组装和基分化的条件.
- 在临床前肌缺陷模型中评估这些器官的有效性.
主要方法:
- 优化化学信号和细胞外基质 (ECM) 模拟策略.
- 培养干细胞以形成具有高细胞活性的厘米尺度肌器官.
- 已评估的基因表型,ECM 生产和基因特异化.
- 在肌缺陷模型中植入器官,以评估细胞保留和修复效率.
主要成果:
- 在人体组织尺度上超过3厘米的可移植肌器官.
- 有机体表现出高细胞活力,增殖,原性表型和增强的ECM产生.
- 获得精确的肌特异性分化,并保持胎儿肌再生能力.
- 器官补充剂使干细胞保持率提高了7.9倍,并促进了的更密集的修复,并改善了机械性能.
结论:
- 能够高效地构建具有优异再生潜力的厘米尺寸人类肌器官.
- 这种策略为肌再生和恢复运动功能提供了有前途的方法.
- 工程肌器官是治疗肌损伤的一种可行的治疗方案.
相关概念视频
Tissue Renewal without Stem Cells
1.6K
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...
1.6K
Whole Body Regeneration
3.6K
Regeneration is the process of restoring injured or lost tissues, organs, or body parts. While simpler organisms generally show greater ability to regenerate their whole body, few complex animals show similarly exceptional regeneration. For example, planarian flatworms have a unique regenerative potential making them a popular study organism among biologists to understand the mechanisms of whole body regeneration. Other organisms, such as hydra, also show extreme regeneration potential;...
3.6K
Tissue Transplantation
1.4K
Tissue transplantation is a significant medical procedure involving the transfer of cells, tissues, or organs from a donor to a recipient, with the primary aim of restoring lost functions. This procedure is crucial in treating a broad spectrum of diseases, including kidney diseases, liver failure, heart disease, and certain types of cancers.
The Biology of Tissue Transplantation
The biology of tissue transplantation hinges on the Major Histocompatibility Complex (MHC) molecules. These molecules...
The Biology of Tissue Transplantation
The biology of tissue transplantation hinges on the Major Histocompatibility Complex (MHC) molecules. These molecules...
1.4K


