在多种乳腺癌模型中,E-cadherin与EGFR相互作用,导致ERK的过激活
Gabriella C Russo1,2, Ashleigh J Crawford1,2, David Clark3
1Department of Chemical and Biomolecular Engineering, Johns Hopkins University, 3400 N Charles St, Baltimore, MD, 21218, USA.
Oncogene
|March 21, 2024
概括
以前被认为可以抑制瘤的E-cadherin实际上通过与EGFR相互作用来驱动乳腺癌的扩散. 抑制MEK激酶有效地减少了E-cadherin阳性乳腺癌的瘤生长和转移.
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:
- 失去了E-cadherin是表皮-介质细胞过渡 (EMT) 和瘤入侵的标志.
- 矛盾的是,E-cadherin与改善的乳腺癌存活率相关,挑战其作为瘤抑制剂的作用.
研究的目的:
- 调查E-cadherin在乳腺癌进展中的新作用.
- 阐明E-cadherin影响瘤细胞表型的分子机制.
- 为了确定E-cadherin阳性乳腺瘤的潜在治疗点.
主要方法:
- 使用了新型的多隔间有机体模型.
- 采用多个体内活体临床前模型.
- 研究了E-cadherin和表皮生长因子受体 (EGFR) 之间的相互作用.
- 分析了MEK/ERK信号通路激活和下游转录因子,如c-Fos.
主要成果:
- 证明E-cadherin通过EGFR相互作用促进乳腺癌细胞中的超增殖表型.
- 表明这种相互作用激活MEK/ERK通路,通过转录因子 (如c-Fos) 增加扩散.
- 证实药理MEK抑制在E-cadherin阳性乳腺癌模型中显著降低瘤生长和宏转移.
结论:
- 在促进乳腺瘤进展方面,E-cadherin发挥了新的作用,与其传统的瘤抑制剂分类相反.
- E-cadherin-EGFR-MEK/ERK信号轴代表了超增殖的E-cadherin阳性乳腺癌的新治疗标.
- 在特定的乳腺癌亚型中,E-cadherin可以作为治疗成功的预测生物标志物.
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