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Tissue Renewal without Stem Cells01:23

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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.
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以贝为灵感的水凝包含石墨衍生物用于软组织再生.

Filipa Fernandes1,2,3, Daniela Peixoto1,2, Cátia Correia1,2

  • 13B's Research Group, I3Bs-Research Institute on Biomaterials, Biodegradables and Biomimetics, University of Minho Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, Avepark, 4805-694 Guimarães, Portugal.

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概括

由氨酸和石墨衍生物制成的生物粘合性复合水凝增强了组织粘附和细胞增殖. 这些先进的水凝显示出作为软组织再生的生物活性支架的潜力.

关键词:
生物仿真方法是生物仿真方法.石墨烯酸石墨是一种石墨.氨酸是什么? 氨酸是什么?

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科学领域:

  • 生物材料科学 生物材料科学
  • 组织工程是组织工程.
  • 聚合物化学 聚合物化学

背景情况:

  • 基于氨酸 (HA) 的水凝由于生物相容性和矩阵模拟性,对软组织应用具有前景.
  • 开发生物粘合性水凝对于增强组织整合和再生至关重要.
  • 以贝为灵感的粘附机制提供了一个创建先进组织支架的策略.

研究的目的:

  • 通过将功能化石墨衍生物整合到氨酸矩阵中来开发新的生物粘合性复合水凝.
  • 研究这些水凝作为软组织再生的支架的潜力.
  • 为了评估复合水凝的生物相容性和细胞增殖效应.

主要方法:

  • 石墨氧化物 (EG) 通过1,3-双极循环添加来产生f-EG的功能化,然后是定银纳米粒子 (f-EG-Ag) 和接种咖啡酸 (f-EG-Cat).
  • 开发多巴胺修饰的HA (HA-Cat) 矩阵.
  • 氧化交叉链接HA-Cat与f-EG-Ag/f-EG-Cat使用酸盐形成复合水凝.
  • 使用L929纤维细胞进行体外生物相容性和细胞增殖试验.

主要成果:

  • 复合水凝由于模仿贝粘附的catechol群体而表现出增强的组织粘附性.
  • 复合水凝的优化度表明与L929纤维细胞细胞的高生物相容性.
  • 在优化的复合凝度下观察到细胞增殖的显著增强.
  • 功能化石墨衍生物 (f-EG-Ag和f-EG-Cat) 成功地集成到HA-Cat矩阵中.

结论:

  • 开发的生物粘合性复合水凝显示出作为软组织再生的先进支架的巨大潜力.
  • 这些水凝可以促进局部化剂的输送,并改善与宿主组织的融合.
  • 氨酸,石墨衍生物和catechol化学的组合为生物活性脚手架开发提供了一个多功能平台.