网林-1和UNC5B与整蛋白合作,以调解YAP驱动的细胞静止
Joel D Pearson1,2,3,4, Katherine Huang1, Louis G Dela Pena4
1Lunenfeld Tanenbaum Research Institute, Mt Sinai Hospital, Sinai Health System, Toronto, Canada.
YAP/TAZ蛋白质可以通过诱导Netrin-1/UNC5B和integrin-αV/β5来抑制YAPoff癌症中的瘤,从而揭示出一种新的抗癌途径. 这一发现挑战了网红蛋白在癌症进展中的已知作用.
科学领域:
- 在瘤学瘤学.
- 分子生物学分子生物学
- 细胞生物学 细胞生物学
背景情况:
- YAP/TAZ蛋白质是转录协活性剂,在癌症中具有对立的作用,在YAPon癌症中充当瘤基因,在YAPoff癌症中充当瘤抑制剂.
- 在YAPoff癌症中,YAP/TAZ被表观遗传性沉默,以及它们的基因参与细胞粘附.
- 以前的研究表明,YAP/TAZ在YAPoff癌症中通过Integrin-αV/β5诱导细胞静止,但其他效应因子仍未知.
研究的目的:
- 在YAPoff癌症中识别YAP的瘤抑制功能的新型作用因子.
- 阐明YAP在YAPoff环境中抑制癌细胞增殖的分子机制.
主要方法:
- 利用集群定期间隔的短平行体重复 (CRISPR) 屏幕来识别参与YAP诱导细胞静止的基因.
- 采用基因淘汰,YAP突变,TEAD激活器融合结构和阻断试验来研究基因功能.
- 分析了对YAP表达反应中的网林受体和配体的表达.
主要成果:
- 网林受体UNC5B被确定为YAP诱导细胞静止在YAPoff癌症的关键调解者.
- 取决于TEAD转录因子的YAP表达,诱导UNC5B和相关的网林通路组件.
- 与它们已知的作用相反,Netrin-1和UNC5B与Integrin-αV/β5合作,调解YAP的抗癌活性.
结论:
- 一个新的Netrin-1/UNC5B/integrin-αV/β5信号轴被确定为YAP瘤抑制活性在YAPoff癌症中的关键作用因子.
- 这项研究揭示了Netrin-1和UNC5B的意想不到的抗癌作用,挑战了它们既有的原始原始功能.
- 这些发现为YAP介导的瘤抑制和YAPoff癌症的潜在治疗点提供了新的见解.
更多相关视频
10:32Combined Use of Tail Vein Metastasis Assays and Real-Time In Vivo Imaging to Quantify Breast Cancer Metastatic Colonization and Burden in the Lungs
Published on: December 19, 2019
11:32Identification of Transcription Factor Regulators using Medium-Throughput Screening of Arrayed Libraries and a Dual-Luciferase-Based Reporter
Published on: March 27, 2020
相关概念视频
Intracellular Signaling Affects Focal Adhesions
Some...
Activation of Integrins
In "outside-in signaling," external factors in the extracellular space bind to exposed ligand binding sites on integrins. This causes the inactive protein to undergo a conformational change to become active. Integrins are often clustered on the cell membrane. Repetitive and regularly spaced ligand binding...
Cytoskeletal Coordination in Cell Migration
Integrins
Some ECM proteins assemble into a basement membrane to which the remaining components adhere. Proteoglycans typically form the bulk of the ECM while fibrous proteins, like collagen,...
Cadherins in Tissue Organization
Cell Sorting During Development
Cell sorting plays an...
Selectins
