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相关概念视频

The Extracellular Matrix01:42

The Extracellular Matrix

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The Extracellular Matrix01:29

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In order to maintain tissue organization, many animal cells are surrounded by structural molecules that make up the extracellular matrix (ECM). Together, the molecules in the ECM maintain the structural integrity of tissue as well as the remarkable specific properties of certain tissues.
Composition of the Extracellular Matrix
The extracellular matrix (ECM) is commonly composed of ground substance, a gel-like fluid, fibrous components, and many structurally and functionally diverse...
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Extracellular Matrix01:26

Extracellular Matrix

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Unlike epithelial tissue, which is composed of cells closely packed with little or no extracellular space in between, connective tissue cells are dispersed in a matrix. This extracellular matrix (ECM) is composed of fibrous proteins like collagen, elastin, and fibronectin in a ground substance consisting of interstitial fluid, cell adhesion proteins, and proteoglycans. The proteoglycans form a gel-like material in the spaces between cells and provide hydration, buffering, binding, and force...
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In animal cells, the extracellular matrix allows cells within tissues to withstand external stresses and transmits signals from the outside of the cell to the inside. The extracellular matrix is extensive, and its composition varies between different types of tissues. For example, the reticular fibers and ground substance make up the ECM in loose connective tissue, while collagen and bone minerals make up the ECM of bone tissue. 
Anchoring junctions mechanically attach a cell to the...
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Author Spotlight: Studying Cardiac Cell-Matrix Interactions In Vitro
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外源细胞外基质在心脏纤维化环境介导的体外模型中.

Natalie Pachter1, Kristen Allen1, Tracy A Hookway1

  • 1Department of Biomedical Engineering, Binghamton University, New York, New York, USA.

Journal of biomedical materials research. Part A
|October 23, 2025
PubMed
概括
此摘要是机器生成的。

研究人员开发了一种可调节的体外心脏纤维化模型,使用心肌细胞,纤维细胞和细胞外基质 (ECM) 蛋白. 该模型有助于理解纤维化疾病,并选潜在的治疗方法.

关键词:
的心脏纤维细胞.的心脏纤维化.心脏组织工程心脏组织工程这是心肌细胞 (cardiomyocytes).原蛋白是一种原蛋白.细胞外矩阵是细胞外矩阵.诱导多能干细胞的诱导干细胞.

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科学领域:

  • 生物医学工程 生物医学工程
  • 心血管研究研究心血管研究
  • 组织工程是组织工程.

背景情况:

  • 心脏纤维化是心脏病的关键因素,缺乏有效的临床治疗方法.
  • 了解纤维化机制和选疗法需要先进的体外模型.

研究的目的:

  • 开发一个可调节的体外心脏纤维化模型.
  • 研究细胞外矩阵 (ECM) 调制对心脏组织形成和功能的影响.
  • 建立一个治疗查平台.

主要方法:

  • 结合的心肌细胞,心脏纤维细胞和外源性ECM蛋白 (原I).
  • 创建了两个心脏组织结构:聚合物和组织环.
  • 评估组织形成,细胞分布和收缩功能.
  • 使用组织学分析来确认ECM的结合.

主要成果:

  • 我补充的原蛋白显著影响了聚合物形成,但对环形形成的影响较小.
  • 调节的ECM在任何组织类型中都没有严重损害收缩功能.
  • 组织学分析证实了外源性ECM直接纳入组织.
  • ECM调制影响了组织形成和细胞分布.

结论:

  • 开发的模型允许对心脏细胞微环境进行可调节的调制.
  • 这种体外系统是研究细胞对ECM变化的反应的宝贵平台.
  • 该模型显示了选治疗性化合物用于心脏纤维化的潜力.