在结直肠癌中,DUSP6调节了Notch1信号传递
Chin Wen Png1,2,3, Madhushanee Weerasooriya1,2,3, Heng Li1,2,3
1Department of Microbiology and Immunology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, 117545, Singapore.
Nature communications
|November 21, 2024
概括
双特异性酸酶6 (DUSP6) 解Notch1,稳定其细胞内域 (NTM) 并促进结直肠癌 (CRC) 细胞生长. 抑制DUSP6可能为CRC提供治疗策略.
科学领域:
- 在瘤学瘤学.
- 分子生物学分子生物学
- 生物化学 生物化学
背景情况:
- 在癌症发育中,Notch1信号传递至关重要.
- 酸化通过其细胞内域 (NTM) 调节Notch1的活动.
- 酸酶在去酸化NTM中的作用在很大程度上是未知的.
研究的目的:
- 调查DUSP6是否作为Notch1.1的酸酶.
- 确定DUSP6在调节NTM稳定性和转录活动中的作用.
- 为了阐明DUSP6对结直肠癌 (CRC) 发展的影响.
主要方法:
- 在人类CRC细胞中评估了DUSP6对Notch1的酸酶活性.
- 与NTM水平和CRC细胞增殖相关的DUSP6表达在体外和体内.
- 分析了DUSP6缺乏对小鼠模型中CRC发育的影响.
- 研究了DUSP6-介导的NTM在-Y2116.6中脱的分子机制.
主要成果:
- 在Y2116处的DUSP6脱酸盐Notch1,稳定NTM.
- 在CRC细胞中增加DUSP6表达增加NTM稳定性和转录活性.
- 增加的NTM水平在体外和体内促进CRC细胞的增殖.
- 高瘤DUSP6表达与较差的患者存活率相关.
- 缺少DUSP6会减少小鼠CRC的发生.
结论:
- DUSP6作为Notch1的酸酶起作用,调节NTM的稳定性.
- DUSP6通过稳定NTM和增强Notch1目标基因表达来促进CRC细胞的增殖.
- DUSP6是结直肠癌的潜在治疗标.
相关概念视频
Role Of Notch Signalling In Intestinal Stem Cell Renewal
2.1K
Notch signaling was first discovered in Drosophila melanogaster, where it is involved in cell lineage differentiation. Notch signaling regulates the maintenance and differentiation of intestinal stem cells or ISCs by controlling the expression of atonal homolog 1 or Atoh1. Atoh1 directs cells to differentiate into secretory cells.
Direct cell-to-cell contact is needed for the activation of Notch signaling. The signal is initiated when a notch ligand binds to a receptor on an adjacent cell, also...
Direct cell-to-cell contact is needed for the activation of Notch signaling. The signal is initiated when a notch ligand binds to a receptor on an adjacent cell, also...
2.1K
Notch Signaling Pathway
4.2K
The Notch signaling pathway is a major intracellular signaling pathway that is highly conserved over a broad spectrum of metazoan species. It stands unique from other intracellular signaling mechanisms in animals because notch protein itself acts as the receptor as well as the primary signaling molecule.
The Notch gene came into the limelight in 1914 after the discovery that its mutation in Drosophila melanogaster leads to a serrated (or "notched") wing margin phenotype. It was not...
The Notch gene came into the limelight in 1914 after the discovery that its mutation in Drosophila melanogaster leads to a serrated (or "notched") wing margin phenotype. It was not...
4.2K
Hedgehog Signaling Pathway
7.3K
The Hedgehog gene (Hh) was first discovered due to its control of the growth of disorganized, hair-like bristles phenotype in Drosophila, much like hedgehog spines. Hh plays a crucial role in the development of organs and the maintenance of homeostasis in both invertebrates and vertebrates. However, while Drosophila has only one Hh protein, mammals have multiple functional Hedgehog proteins - Sonic (Shh), Desert (Dhh), and Indian Hedgehog (Ihh). All of these homologous proteins have adapted to...
7.3K
Canonical Wnt Signaling Pathway
8.7K
The gene encoding the main signaling molecules of the Wnt signaling pathways (the Wnt proteins) was discovered almost four decades ago by Nüsslein-Volhard and Wieschaus. They identified and originally named the gene "wingless" (wg) after a phenotype discovered during their landmark genetic screen in Drosophila for body pattern defects. At around the same time, another researcher named Harold Varmus found that a murine tumor virus activates the mammalian wg homolog, Int-1, which...
8.7K
Non-Canonical Wnt Signaling Pathways
7.2K
Wnt is a zygotic effect gene that is expressed during very early embryonic development. It regulates various processes in animals starting from early development through the adult stage, such as organogenesis in the embryo and maintenance of neuronal and blood stem cells. Wnt proteins can induce a wide variety of intracellular pathways depending upon the specific abilities of different Wnt ligands to form a complex with shared and cognate receptors in the presence of different co-receptors. The...
7.2K
Role of Ephrin-Eph Signalling in Intestinal Stem Cell Renewal
2.2K
Erythropoietin-producing hepatocellular carcinoma receptor (Eph) and its ligand, Eph receptor-interacting protein (Ephrin) were first discovered in the human carcinoma cell line, hence the name. Ephrin-Eph interaction guides cells to reach their appropriate location in adult tissues. They also play an essential role in the immune system by helping in immune cell migration, adhesion, and activation. Based on their structure and function, Eph is divided into two classes — EphA and EphB.
2.2K


