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Mesenchymal Stem Cells01:19

Mesenchymal Stem Cells

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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...
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Non-contact, Label-free Monitoring of Cells and Extracellular Matrix using Raman Spectroscopy
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使用拉曼显微光谱学监测介质干细胞分化的动态演变.

F Ravera1, E Efeoglu2, H J Byrne1

  • 1FOCAS Research Institute, Technological University Dublin, City Campus, Dublin 8, Ireland. D16126527@mytudublin.ie.

The Analyst
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PubMed
概括

拉曼显微镜与MCR-ALS分析相结合,揭示了3D原水凝中的更快的体生成. 这种方法跟踪干细胞分化过程中的生化变化,为再生医学提供了洞察力.

科学领域:

  • 生物化学 生物化学
  • 细胞生物学 细胞生物学
  • 频谱学是一种光谱学.

背景情况:

  • 拉曼显微镜 (RMS) 能够在现场进行细胞生化过程的非破坏性监测.
  • 从差异化等动态细胞事件分析复杂的光谱数据仍然具有挑战性.
  • 多变量曲线分辨率-交替最小平方 (MCR-ALS) 是一种用于光谱解卷的化学测量技术.

研究的目的:

  • 将MCR-ALS应用于拉曼显微光谱学数据,以分析介质干细胞分化成冠状细胞.
  • 为了比较3D原蛋白水凝和2D培养模型上的基生成.
  • 为了建模体生成的运动进化,并提取生化信息.

主要方法:

  • 收集了21天内在3D原基和2D基板上培养的细胞的拉曼显微镜数据.
  • 应用MCR-ALS回归分析来将光谱数据分解为组件光谱.
  • 模拟了使用现象学速率方程的体生成的动态进化.

主要成果:

  • MCR-ALS成功地解了光谱特征,识别了生物化学物种及其演变.
  • 观察到,体发生在核区域开始,扩散到核和细胞质区.
  • 在3D原水凝上培养的细胞培养与2D培养相比,表现出更快的分化率.

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结论:

  • RMS和MCR-ALS的结合提供了一个强大的方法来研究复杂的细胞过程,如chondrogenesis.
  • 这种方法有助于提取动力和光谱信息,这对于理解细胞分化至关重要.
  • 这些发现支持通过优化细胞培养条件来开发再生医学的先进策略.