相关实验视频
Updated: Jan 14, 2026

10:37
Induction and Analysis of Epithelial to Mesenchymal Transition
Published on: August 27, 2013
36.4K
WNT3A Upregulates RIP1/HIF-1α/GDF-15路径诱导EMT,从而增加结肠直肠癌细胞迁移和入侵
A-Ram Kang1, Tae-Jun Kim1, Jung-Yoon Yoo2
1Division of Radiation Biomedical Research, Korea Institute of Radiological and Medical Sciences, Seoul, Korea.
Cancer research and treatment
|October 24, 2025
概括
这项研究揭示了一个新的WNT3A信号通路,涉及RIP1,HIF-1α和GDF-15,驱动着结直肠癌 (CRC) 细胞迁移和入侵. 针对这一轴可以为转移性CRC提供新的治疗策略.
科学领域:
- 在瘤学瘤学.
- 分子生物学分子生物学
- 癌症信号通路 癌症信号通路
背景情况:
- 对于表皮细胞 - 介质细胞过渡 (EMT) 和结直肠癌 (CRC) 恶性瘤,WNT信号传递至关重要.
- 之前的工作涉及RIP1在WNT驱动的CRC进展.
研究的目的:
- 阐明WNT3A在CRC中诱导EMT的新信号通路.
- 为了确定WNT3A介导的CRC转移中的关键分子参与者.
主要方法:
- 使用的CRC细胞系 (DLD-1,HCT116) 和小鼠胚胎纤维细胞.
- 通过RT-qPCR,免疫血清和ELISA评估GDF-15和GFRAL的基因和蛋白质表达.
- 用于RIP1和HIF-1α沉默的siRNA/shRNA;进行了迁移,入侵和细胞因子分析分析.
主要成果:
- 在RIP1.1的介导下,WNT3A上调了GDF-15和GFRAL的表达和分泌.
- RIP1促进GDF-15分泌,从而增强CRC细胞的迁移,入侵和EMT.
- HIF-1α作为下游转录因子,调节GDF-15在该途径中的表达.
- 在CRC患者的血液和转移组织中观察到高GDF-15水平.
结论:
- 确定了一个新的WNT3A/RIP1/HIF-1α/GDF-15信号轴,驱动EMT,迁移和入侵CRC.
- 这一途径代表了抑制结直肠癌转移性进展的潜在治疗标.
相关概念视频
Canonical Wnt Signaling Pathway
10.4K
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...
10.4K
Non-Canonical Wnt Signaling Pathways
8.3K
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...
8.3K
Cancer Cell Migration through Invadopodia
3.2K
Invadosome is a broad category of cell surface structures with proteolytic activity that degrades the extracellular matrix (ECM). Invadosomes are present in normal cell types, including macrophages, endothelial cells, and neurons, as well as tumor cells. Although the macrophage podosomes and tumor cell invadopodia are classified as invadosomes, they have different structures, molecular pathways, and functions. Podosomes are short structures that last for a few minutes. However,...
3.2K
Role of Ephrin-Eph Signalling in Intestinal Stem Cell Renewal
2.6K
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.
2.6K
Role Of Notch Signalling In Intestinal Stem Cell Renewal
2.4K
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...
2.4K
Regulation of Angiogenesis and Blood Supply
3.3K
Rapidly dividing tumors, embryos, and wounded tissues require more oxygen than usual, lowering the oxygen concentration in the blood. At low oxygen or hypoxic conditions, an oxygen-sensitive transcription factor called the hypoxia-inducible factor 1 or HIF1 is activated. HIF1 is a dimeric protein of alpha (ɑ) and beta (β) subunits. Under optimal oxygen conditions, HIF1β is present in the nucleus while HIF1ɑ remains in the cytosol. HIF1ɑ is hydroxylated by prolyl...
3.3K

