CLK1 激活 YAP 促进肝脏内胆血管癌发生
Shuai Xue1,2, Xiangzheng Chen1, Guoteng Qiu1
1Division of Liver Surgery, Department of General Surgery and Laboratory of Liver Surgery, West China Hospital, Sichuan University, Chengdu, China.
Cancer research
|December 18, 2024
概括
类似Cdc2的激酶1 (CLK1) 通过激活Hippo-YAP通路来驱动肝内胆管癌 (ICC) 的生长. 抑制YAP显示出治疗CLK1驱动的ICC的前景.
科学领域:
- 在瘤学瘤学.
- 分子生物学分子生物学
- 生物化学 生化学
背景情况:
- 类似Cdc2的激酶1 (CLK1) 是一种双特异性激酶,参与各种生理过程.
- CLK1失调与多种癌症的发展有关.
- 肝脏内胆管癌 (ICC) 是一种具有挑战性的肝癌,治疗选择有限.
研究的目的:
- 调查CLK1在肝脏内胆管癌 (ICC) 发展和进展中的功能作用.
- 阐明CLK1影响ICC瘤发生的分子机制.
- 探索潜在的治疗策略,针对ICC中的CLK1-介导途径.
主要方法:
- 在ICC瘤中分析CLK1表达和患者预后.
- 利用水力动力学转染的小鼠模型来研究ICC启动.
- 采用RNA测序,细胞增殖测定和体内瘤生长研究.
- 研究Hippo-Yes关联蛋白 (YAP) 信号通路的激活.
- 进行了4D无标签质谱和共免疫沉试验.
主要成果:
- 在ICC瘤中,CLK1表达升高,与患者预后不佳相关.
- CLK1与AKT合作,启动ICC,并促进扩散和瘤生长.
- 高水平的CLK1激活Hippo-YAP信号通路,对YAP及其下游目标进行上调.
- 抑制或丧失YAP抑制了CLK1诱导的ICC生长,WWC2被确定为潜在的调解者.
结论:
- 在推动ICC启动和进展方面,CLK1起着至关重要的作用.
- 通过增强YAP活动,CLK1促进ICC瘤发生.
- 向YAP为CLK1驱动的ICC提供了一个潜在的治疗策略.
相关概念视频
The Intrinsic Apoptotic Pathway
6.4K
Internal cellular stress, such as cellular injury or hypoxia, triggers intrinsic apoptosis. The B-cell lymphoma 2 (Bcl-2) family of proteins are the primary regulators of the intrinsic apoptotic pathway. For example, during DNA damage, checkpoint proteins, such as Ataxia Telangiectasia Mutated (ATM protein) and Checkpoints Factor-2 (Chk2) proteins, are activated. These proteins phosphorylate p53 which further activates pro-apoptotic proteins, such as Bax, Bak, PUMA, and Noxa, and inhibits...
6.4K
Induced Pluripotent Stem Cells
3.9K
Stem cells are undifferentiated cells that divide and produce different cell types. Ordinarily, cells that have differentiated into a specific cell type are terminally differentiated; however, scientists have found a way to reprogram these mature cells so that they dedifferentiate and return to an unspecialized, proliferative state. These cells are pluripotent like embryonic stem cells—able to produce all cell types—and are called induced pluripotent stem cells (iPSCs).
Somatic...
Somatic...
3.9K
Interactions Between Signaling Pathways
6.2K
Signaling cascades usually lack linearity. Multiple pathways interact and regulate one another, allowing cells to integrate and respond to diverse environmental stimuli.
Convergence and divergence, and cross-talk between signaling pathways
Two distinct signaling pathways can converge on a single functional unit, which may either be a single protein or a complex of proteins. The response is either functionally distinct or synergistic between the two pathways but different from the response...
Convergence and divergence, and cross-talk between signaling pathways
Two distinct signaling pathways can converge on a single functional unit, which may either be a single protein or a complex of proteins. The response is either functionally distinct or synergistic between the two pathways but different from the response...
6.2K
MAPK Signaling Cascades
5.2K
Mitogen-activated protein kinase, or MAPK pathway, activates three sequential kinases to regulate cellular responses such as proliferation, differentiation, survival, and apoptosis. The canonical MAPK pathway starts with a mitogen or growth factor binding to an RTK. The activated RTKs stimulate Ras, which recruits Raf or MAP3 Kinase (MAPKKK), the first kinase of the MAPK signaling cascade. Raf further phosphorylates and activates MEK or MAP2 Kinases (MAPKK), which in turn phosphorylates MAP...
5.2K
Inhibition of Cdk Activity
4.6K
The orderly progression of the cell cycle depends on the activation of Cdk protein by binding to its cyclin partner. However, the cell cycle must be restricted when undergoing abnormal changes. Most cancers correlate to the deregulated cell cycle, and since Cdks are a central component of the cell cycle, Cdk inhibitors are extensively studied to develop anticancer agents. For instance, cyclin D associates with several Cdks, such as Cdk 4/6, to form an active complex. The cyclin D-Cdk4/6 complex...
4.6K
Abnormal Proliferation
4.4K
Under normal conditions, most adult cells remain in a non-proliferative state unless stimulated by internal or external factors to replace lost cells. Abnormal cell proliferation is a condition in which the cell's growth exceeds and is uncoordinated with normal cells. In such situations, cell division persists in the same excessive manner even after cessation of the stimuli, leading to persistent tumors. The tumor arises from the damaged cells that replicate to pass the damage to the...
4.4K


