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Updated: May 9, 2025

Induction and Analysis of Epithelial to Mesenchymal Transition
Published on: August 27, 2013
在EMT期间重塑细胞-细胞粘附的卡德林动力学和皮质张力
Hongyuan Zhu1, Xiaoxi Liu1, Jiayu Zhang1
1The Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an, P.R. China; Bioinspired Engineering and Biomechanics Center (BEBC), Xi'an Jiaotong University, Xi'an, P.R. China.
皮质到介质细胞转换 (EMT) 通过用N-cadherin取代E-cadherin来削弱细胞粘附. 这种转变会损害分子力学和集群动力学,降低癌症转移等疾病的粘附强度.
科学领域:
- 细胞力学 细胞力学
- 癌症生物学 癌症生物学
- 生物物理学的生物物理.
背景情况:
- 皮质到介质细胞的过渡 (EMT) 对癌症转移和纤维化至关重要.
- EMT涉及将上皮层E-cadherin替换为介质细胞N-cadherin,改变细胞粘附.
- 这种卡德林切换对粘附力学和动力学的影响尚不清楚.
研究的目的:
- 调查EMT期间的卡德林切换如何影响分子粘附力学,集群动力学和整体粘附强度.
- 阐明EMT驱动的变化削弱细胞细胞和细胞矩阵粘附的机制.
- 为针对EMT相关疾病提供见解.
主要方法:
- 开发了一种统一的格子离合模型来模拟卡德林聚类,皮质张力和粘附.
- 利用原子力显微镜测量单一德林键和细胞粘附的机械性质.
- 在各种条件下实验验证的计算建模结果.
主要成果:
- N-cadherin 的跨键本质上比 E-cadherin 的跨键弱.
- EMT 损害了卡德林聚类和皮层张力调节.
- 在EMT过程中,粘附强度 (细胞-细胞和细胞-矩阵) 显著降低,特别是在刚性基板上.
结论:
- 在多个尺度上,EMT削弱了细胞粘附,从单键到集体动力学.
- 向N-cadherin的转变和粘附元件的调节受损减少了机械传导.
- 这些发现为EMT驱动的疾病提供了潜在的治疗策略,例如癌症转移和纤维化.
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