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相关概念视频

Mechanical Protein Functions01:58

Mechanical Protein Functions

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Proteins perform many mechanical functions in a cell. These proteins can be classified into two general categories- proteins that generate mechanical forces and proteins that are subjected to mechanical forces. Proteins providing mechanical support to the structure of the cell, such as keratin, are subjected to mechanical force, whereas proteins involved in cell movement and transport of molecules across cell membranes, such as an ion pump, are examples of generating mechanical 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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相关实验视频

Updated: Jul 14, 2025

BioMEMS and Cellular Biology: Perspectives and Applications
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细胞机械记忆在生物工程中的含义

Oksana Y Dudaryeva1,2, Stéphane Bernhard1, Mark W Tibbitt1

  • 1Macromolecular Engineering Laboratory, Department of Mechanical and Process Engineering, ETH Zurich, Zurich 8092, Switzerland.

ACS biomaterials science & engineering
|October 5, 2023
PubMed
概括
此摘要是机器生成的。

在刚性基板上培养的细胞发展出"机械记忆",改变它们的行为并影响生物工程的结果. 新的基板可以减轻这种影响,以改善细胞疗法和组织再生.

关键词:
细胞扩张 细胞扩张细胞的可塑性 细胞的可塑性机械记忆 机械记忆是一种机械记忆.机械传导 机械传导基板的硬度 基板的硬度组织工程是组织工程.

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科学领域:

  • 生物工程是生物工程.
  • 细胞生物学 细胞生物学
  • 生物材料科学 生物材料科学

背景情况:

  • 在硬基板上的细胞培养会诱导机械应力,导致细胞持续的表型变化.
  • 这种被称为"机械记忆"的现象,即使在转移到新的环境后,也会影响细胞的行为.
  • 机械记忆首先观察到在硬基板上培养的肺纤维细胞中.

研究的目的:

  • 审查细胞中性诱导的机械记忆的基础机制.
  • 讨论机械记忆对生物工程中的细胞扩张和组织再生的影响.
  • 为缓解机械记忆提出替代培养基质.

主要方法:

  • 审查关于细胞机械记忆的现有文献.
  • 对细胞骨,转录因子和表观遗传修饰剂作用的分析.
  • 检查受机械记忆影响的生物工程应用.

主要成果:

  • 硬度诱导的机械记忆涉及细胞骨的结构变化和转录因子/表观遗传修饰剂活性的改变.
  • 机械记忆在干细胞治疗和疾病模型等应用中对细胞扩张和组织再生产生负面影响.
  • 长时间的二维塑料培养会加剧机械记忆的影响.

结论:

  • 机械记忆在基于细胞的生物工程应用中构成了重大挑战.
  • 替代细胞培养基质可能会减轻或删除机械记忆.
  • 克服机械记忆对于提高下游生物工程应用的效率至关重要.