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相关概念视频

Tissue Renewal without Stem Cells01:23

Tissue Renewal without Stem Cells

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...

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相关实验视频

Updated: May 13, 2026

Procedure for Decellularization of Porcine Heart by Retrograde Coronary Perfusion
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在一天的两步方案中进行心周脱细胞化.

P López-Chicón1,2, J I Rodríguez Martínez1,2, C Castells-Sala3,4

  • 1Barcelona Tissue Bank, Banc de Sang i Teixits (BST, GenCAT), Passeig Taulat 116, 08005, Barcelona, Spain.

Molecular and cellular biochemistry
|September 9, 2024
PubMed
概括
此摘要是机器生成的。

这项研究开发了人类心周组织的快速脱细胞化方法,创造了一个生物相容的支架. 由此产生的无细胞矩阵保留了细胞外矩阵结构和机械特性,用于组织工程应用.

关键词:
脱细胞化 脱细胞化人类无细胞矩阵周心全移植是指心脏周心全移植.组织工程是组织工程.组织机构组织机构.

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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.
  • 再生医学是一种再生医学.

背景情况:

  • 组织工程支架旨在模仿本地细胞外基质 (ECM).
  • 自然材料提供优势,但需要加工以确保生物相容性.
  • 人体心膜是组织支架的潜在来源.

研究的目的:

  • 开发和验证人类心周细胞的快速脱细胞化协议.
  • 为了评估脱细胞化心脏的生物相容性和结构完整性.
  • 为了评估无细胞心周矩阵作为生物替代品的适用性.

主要方法:

  • 人体心周细胞的酶和高血压脱细胞化.
  • 组织学分析以确认细胞去除和ECM完整性.
  • 剩余DNA和ECM组件的量化 (原,弹性素,糖氨基糖).
  • 生物力学测试用于评估抗拉强度.

主要成果:

  • 脱细胞化过程有效地去除了细胞,同时保留了ECM结构.
  • 其余遗传含量低于50 ng/mg干组织.
  • 关键的ECM生物分子 (原,弹性素,糖氨基甘油) 被保留.
  • 无细胞心周基质保持了其机械性能.

结论:

  • 开发的超快速脱细胞化协议产生了生物相容且非细胞毒的人类心脏移植.
  • 无细胞基质保留了本地ECM的基本结构和生物力学特性.
  • 这种加工的心脏膜适用于组织工程中的各种临床应用.