由TCF12调节的GRB7通过激活Notch1信号通路来促进HER2+乳腺癌的进展
Gang Wang1,2,3, Yuanli Wu1,2,3, Yue Su1,2,3
1Department of Pharmacology, College of Pharmacy, Chongqing Medical University, Chongqing, 400016, China.
Journal of translational medicine
|August 7, 2024
概括
增长因子受体结合蛋白7 (GRB7) 在人类表皮生长因子受体2-阳性 (HER2+) 乳腺癌 (BC) 中被上调,促进瘤进展. 抑制GRB7抑制了瘤生长,表明其作为HER2+BC的治疗点的潜力.
科学领域:
- 在瘤学瘤学.
- 分子生物学分子生物学
- 遗传学 是一个遗传学.
背景情况:
- 人类表皮生长因子受体2-阳性 (HER2+) 乳腺癌 (BC) 是具有高复发率的侵袭性.
- 增长因子受体结合蛋白7 (GRB7) 被认为是癌症的潜在诊断和预后标.
- 在HER2+BC中GRB7的特定作用和机制仍未得到充分研究.
研究的目的:
- 为了研究HER2+BC中GRB7的生物功能.
- 阐明GRB7在HER2+BC进展中的作用背后的调节机制.
主要方法:
- 使用TCGA,GEO和CancerSEA数据库进行生物信息分析.
- 在体外测定 (RT-qPCR,西部斑点,MTT,EDU,殖民地形成,伤口愈合,Transwell) 和体内异种移植模型.
- RNA测序,染色体免疫沉 (ChIP) 和光酶记者测试以确定调节途径和相互作用.
主要成果:
- 在BC中,GRB7显著上调,特别是HER2+BC,与预后不佳相关.
- GRB7的过度表达增强了HER2+BC细胞的增殖,迁移和入侵;GRB7的枯竭抑制了这些过程和异种移植的生长.
- TCF12直接促进GRB7的转录;GRB7与Notch1相互作用,激活Wnt/β-catenin,AKT和ERK通路,驱动上皮层-介质细胞过渡 (EMT) 和瘤进展.
结论:
- 在HER2+BC中,GRB7起着显著的致癌作用.
- GRB7作为一个潜在的预后生物标志物和HER2+BC的有前途的治疗点.
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