在体外伸展调节线粒体动力学和能量代谢,以诱导介质干细胞中的平滑肌肉分化
相关实验视频
Updated: May 31, 2025
25:12
Mechanical Stimulation of Stem Cells Using Cyclic Uniaxial Strain
Published on: July 29, 2007
12.7K
Yu Liu1, Zhijie Yang1, Jing Na1
1Key Laboratory of Biomechanics and Mechanobiology, Ministry of Education, Key Laboratory of Innovation and Transformation of Advanced Medical Devices, Ministry of Industry and Information Technology, National Medical Innovation Platform for Industry-Education Integration in Advanced Medical Devices (Interdiscipline of Medicine and Engineering), School of Biological Science and Medical Engineering, Beihang University, Beijing, China.
概括
机械拉伸引导介质干细胞 (MSCs) 通过通过YAP和Piezo1信号调节能量代谢和线粒体动力学,成为光滑肌肉细胞 (SMCs).
科学领域:
- 生物医学工程 生物医学工程
- 细胞生物学 细胞生物学
- 血管生物学 血管生物学
背景情况:
- 血管光滑肌细胞 (SMC) 对于血压调节和血管重塑至关重要.
- 介酶干细胞 (MSCs) 显示出在血管再生中分化为SMCs的潜力.
- 机械力,如循环拉伸,影响细胞行为和分化.
研究的目的:
- 研究循环拉伸诱导MSC分化为SMC的机制.
- 探索能量代谢,线粒体动力学,YAP和Piezo1在这种差异化过程中的作用.
主要方法:
- 培养MSC并应用循环拉伸.
- 评估SMC标记物的表达 (α-SMA,SM22).
- 评估细胞收缩能力,血管生成和能量代谢.
- 分析线粒体动力学蛋白质 (MFN1,MFN2,DRP1).
- 调查YAP和Piezo1信号通路的参与.
主要成果:
- 循环拉伸诱导MSC表达SMC标记物并获得收缩功能.
- 伸展促进了MSC中的糖解,氧化酸化和线粒体融合.
- 确定YAP和Piezo1信号是拉伸诱导的MSC-SMC分化的关键调节者,影响能量代谢和Ca2+信号.
结论:
- 循环拉伸是MSC-SMC差异化的有效刺激,增强血管再生潜力.
- 差异化过程由YAP和Piezo1介导,它们将机械信号与代谢和线粒体调节相结合.
- 了解这些机制可以为血管移植的组织工程策略提供信息.
相关概念视频
01:19Mesenchymal Stem Cells
4.6K
Mesenchymal stem cells (MSCs) are adult stem cells that can differentiate into most connective tissue cell types, except for hematopoietic cells, depending upon the source of MSCs. For example, bone-marrow-derived MSCs (BM-MSCs) can differentiate into osteocytes, hepatocytes, and pancreatic and neuronal cells. MSCs can be isolated from various sources such as bone marrow, placenta, adipose tissue, teeth, and Wharton’s jelly, a gelatinous substance in the umbilical cord. The ease of their...
4.6K
01:25Smooth Muscle Contraction
2.4K
Smooth muscle contraction is a complex process vital for various bodily functions, from maintaining blood vessel tension to facilitating the movement of food through the digestive tract. Unlike striated muscles, smooth muscle contraction begins more slowly and lasts longer.
The onset of contraction is triggered by an increase in calcium ions within the sarcoplasm, similar to the process in striated muscle. However, smooth muscles have a relatively smaller reservoir of the sarcoplasmic...
The onset of contraction is triggered by an increase in calcium ions within the sarcoplasm, similar to the process in striated muscle. However, smooth muscles have a relatively smaller reservoir of the sarcoplasmic...
2.4K