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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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在出生后的早期发育过程中,LINC复合体调节肌弹性模块,原缩和侧向扩张.

Nicholas M Pancheri1, Jordan T Daw2, Destinee Ditton1

  • 1Chemical & Biological Engineering, University of Idaho, Moscow, Idaho, USA.

Journal of orthopaedic research : official publication of the Orthopaedic Research Society
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概括

核骨和细胞骨的链接器 (LINC) 综合体通过感知机械信号来调节肌发育. 禁用LINC会影响肌机制和原结构的能量储存与定位肌的不同.

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在 KASH-domain 中使用.在 LINC 找 LINC.这是一个SUN-domain.发展发展发展发展发展.机械生物学 机械生物学机械传导 机械传导尼斯普林 (Nesprin) 是一个主要的产物.核机械感觉是一种感觉.肌 肌是一种肌.十代发生的过程.

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科学领域:

  • 细胞机械生物学 细胞机械生物学
  • 骨生物学 骨生物学
  • 结合组织发育 结合组织发育

背景情况:

  • 机械信号对于肌发育至关重要,但它们的调节仍然不太了解.
  • 核,通过核骨和细胞骨 (LINC) 复合体的链接器,是细胞机械感应的关键调节者.
  • LINC在生 (肌形成) 中的特定作用以前没有被研究过.

研究的目的:

  • 研究LINC复合体在调节肌发育和肌生成中的作用.
  • 确定如何禁用LINC介导的机械感知影响肌的机械性质和结构组织.
  • 为了比较LINC中断对储能肌 (阿基里斯肌) 和定位肌 (尾肌) 的影响.

主要方法:

  • 利用具有主导-负 KASH (dnKASH) 域过度表达的鼠标模型来禁用 LINC 复杂函数.
  • 在出生后第10天对阿基里斯 (AT) 和尾 (TT) 进行机械测试.
  • 分析了肌机械性质,横截面积和原缩距离的变化.

主要成果:

  • 在dnKASH小鼠中,禁用LINC复合体显著改变了肌的机械特性和横截面积.
  • 在AT和TT之间,LINC中断对机械性能和结构的影响有所不同.
  • 与对照组相比,dnkash小鼠的原蛋白纹距离在ATs中显著减少,而在TTs中增加.

结论:

  • 通过LINC复合体的核机械传导在调节新生儿肌形成方面发挥着重要作用.
  • 对LINC复合体的破坏特别影响肌力学和原纹结构.
  • 肌对LINC复杂干扰的反应在储能肌和定位肌之间有所不同,突出了不同的发育机制.