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TGFβ1‐induced expression of caldesmon mediates epithelial–mesenchymal transition

机译:TGFβ1诱导的Caldesmon介质表达上皮 - 间充质转换

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摘要

Abstract Epithelial–mesenchymal transition (EMT) is an important process that mediates organ development and wound healing, and in pathological contexts, it can contribute to the progression of fibrosis and cancer. During EMT, cells exhibit marked changes in cytoskeletal organization and increased expression of a variety of actin associated proteins. Here, we sought to determine the role of caldesmon in mediating EMT in response to transforming growth factor (TGF)‐β1. We find that the expression level and phosphorylation state of caldesmon increase as a function of time following induction of EMT by TGFβ1 and these changes in caldesmon correlate with increased focal adhesion number and size and increased cell contractility. Knockdown and forced expression of caldesmon in epithelial cells reveals that caldesmon expression plays an important role in regulating the expression of the myofibroblast marker alpha smooth muscle actin. Results from these studies provide insight into the role of cytoskeletal associated proteins in the regulation of EMT and may suggest ways to target the cell cytoskeleton for regulating EMT processes.
机译:摘要上皮 - 间充质转换(EMT)是介导器官发展和伤口愈合,以及病理背景下的一个重要过程,它可以有助于纤维化和癌症的进展。在EMT期间,细胞表现出细胞骨骼组织的显着变化,并增加了各种肌动蛋白相关蛋白的表达。在这里,我们试图确定Caldesmon在响应转化生长因子(TGF)-β1的介导EMT中的作用。我们发现,Caldesmon的表达水平和磷酸化状态随TGFβ1诱导EMT诱导后的时间的函数,并且屈光度粘附数和尺寸增加和细胞收缩性增加以及细胞收缩性增加。在上皮细胞中萼的敲低和强制表达显示,钙钠表达在调节肌纤维细胞标志物α平滑肌肌动蛋白的表达方面发挥着重要作用。这些研究的结果提供了洞察细胞骨骼相关蛋白在EMT调节中的作用,并且可以提示用于靶向细胞细胞骨架用于调节EMT过程的方法。

著录项

  • 来源
    《Cytoskeleton》 |2018年第5期|共12页
  • 作者单位

    Department of Chemical EngineeringThe Pennsylvania State UniversityUniversity Park Pennsylvania;

    Department of Chemical EngineeringThe Pennsylvania State UniversityUniversity Park Pennsylvania;

    Department of Chemical EngineeringThe Pennsylvania State UniversityUniversity Park Pennsylvania;

    Department of Biomedical EngineeringUniversity of South CarolinaColumbia South Carolina 29208;

    Department of Chemical EngineeringThe Pennsylvania State UniversityUniversity Park Pennsylvania;

    Department of Chemical EngineeringThe Pennsylvania State UniversityUniversity Park Pennsylvania;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 细胞生物学;
  • 关键词

    cytoskeleton; focal adhesions; myofibroblast; traction force microscopy;

    机译:细胞骨架;焦粘连;肌纤维细胞;牵引力显微镜;

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