相关实验视频
Updated: Jul 25, 2025

10:37
Induction and Analysis of Epithelial to Mesenchymal Transition
Published on: August 27, 2013
35.9K
在AKT2介导的核变形导致基因组不稳定性在上皮细胞-介质细胞过渡期间
Jia-Rong Fan1,2, Sung-Nian Chang1, Ching-Tung Chu1
1Institute of Biochemistry and Molecular Biology, National Yang Ming Chiao Tung University, Taipei 11221, Taiwan.
iScience
|June 28, 2023
概括
转化生长因子β (TGFβ) 通过AKT2和Smad3触发癌细胞核变形,导致基因组不稳定. 这项研究揭示了一种关键机制,它将核形状的变化与癌症的进展联系起来.
科学领域:
- 细胞生物学 细胞生物学
- 分子生物学分子生物学
- 癌症研究 癌症研究
背景情况:
- 核变形是癌细胞中已知的现象,但其原因和后果尚不清楚.
- 表皮-介质细胞过渡 (EMT) 是癌症进展和转移的一个关键过程.
研究的目的:
- 阐明癌细胞中转化生长因子β (TGFβ) 诱导的核变形的分子机制.
- 调查核变形在EMT期间基因组不稳定性中的作用.
主要方法:
- 利用了人类肺癌A549细胞系和TGFβ刺激.
- 分析了层A的酸化,核层完整性和基因组不稳定性.
- 研究了AKT2和Smad3信号通路的作用.
主要成果:
- TGFβ诱导核变形,增加了Ser390的层层A酸化,导致核层膜缺陷和基因组不稳定.
- 在Ser390上,AKT2直接化层A;Smad3对于TGFβ激活AKT2至关重要.
- 抑制AKT2,Smad3或突变层A Ser390可以防止TGFβ诱导的核变形和基因组不稳定.
结论:
- 揭示了一个分子途径,TGFβ通过AKT2和Smad3通过酸化层A诱导核变形.
- 在EMT期间建立了TGFβ诱导的核变形和基因组不稳定性之间的功能联系.
关键词:
细胞生物学 细胞生物学更多相关视频
相关概念视频
Microtubule Instability
5.2K
Microtubules are hollow cylindrical filaments having a diameter of approximately 25 nm and a length that varies from 200 nm to 25 μm. GTP-bound tubulin subunits form αβ-heterodimers for microtubule assembly. These core building blocks interact longitudinally, polymerizing into protofilaments. The protofilaments then interact with one another through lateral bonding forces to form stable cylindrical microtubules. These cylindrical filaments are dynamic as they undergo repeated...
5.2K
Destabilization of Microtubules
2.8K
The destabilization of microtubules can occur during different stages of the microtubule lifecycle, such as nucleation or elongation. It can take place at either end of the microtubule or in the microtubule lattices as a whole. The lifespan of individual microtubules within a cell varies according to the cell type and stage of the cell cycle. During interphase, the lifespan of the microtubule is about 30 minutes, while during cell division, it is about 15 minutes. In axonal microtubules of...
2.8K
DNA Damage can Stall the Cell Cycle
9.2K
In response to DNA damage, cells can pause the cell cycle to assess and repair the breaks. However, the cell must check the DNA at certain critical stages during the cell cycle. If the cell cycle pauses before DNA replication, the cells will contain twice the amount of DNA. On the other hand, if cells arrest after DNA replication but before mitosis, they will contain four times the normal amount of DNA. With a host of specialized proteins at their disposal,cells must use the right protein at...
9.2K
Mitogens and the Cell Cycle
6.6K
Mitogens and their receptors play a crucial role in controlling the progression of the cell cycle. However, the loss of mitogenic control over cell division leads to tumor formation. Therefore, mitogens and mitogen receptors play an important role in cancer research. For instance, the epidermal growth factor (EGF) - a type of mitogen and its transmembrane receptor (EGFR), decides the fate of the cell's proliferation. When EGF binds to EGFR, a member of the ErbB family of tyrosine kinase...
6.6K
TGF - β Signaling Pathway
7.5K
The TGF-β signaling pathway regulates cell growth, differentiation, adhesion, motility, and development. TGF-β ligands that induce TGF-β signaling are synthesized in their latent form. Several proteases or cell surface receptors such as integrins act upon the latent form, releasing the active ligand. There are three types of mammalian TGF-βs: (TGF-β1, TGF-β2, and TGF-β3) that bind as homodimers or heterodimers to TGF-β receptors. The TGF-β receptors...
7.5K
M-Cdk Drives Transition Into Mitosis
5.6K
Checkpoints throughout the cell cycle serve as safeguards and gatekeepers, allowing the cell cycle to progress in favorable conditions and slow or halt it in problematic ones. This regulation is known as the cell cycle control system.
Cyclin-dependent kinases, or Cdks, work in concert with cyclins to control cell cycle transitions. M-Cdk, a complex of Cdk1 bound to M cyclin, is a well-known example of this coordinated control that drives the transition from the G2 to the M phase.
M cyclin...
Cyclin-dependent kinases, or Cdks, work in concert with cyclins to control cell cycle transitions. M-Cdk, a complex of Cdk1 bound to M cyclin, is a well-known example of this coordinated control that drives the transition from the G2 to the M phase.
M cyclin...
5.6K

