在黑色素瘤进展中,YAP1控制了N-cadherin介导的瘤-肌瘤相互作用
Yao Xio1, Lilni Zhou1, Thomas Andl
1University of Cincinnati.
Research square
|August 7, 2023
概括
癌症相关纤维细胞 (CAFs) 中的Yes相关蛋白1 (YAP1) 通过上调N-cadherin来驱动黑色素瘤的进展. 在CAF中YAP1枯竭通过降低瘤细胞中N-cadherin和PI3K-AKT信号的调节来抑制黑色素瘤的生长.
科学领域:
- 在瘤学瘤学.
- 细胞生物学 细胞生物学
- 癌症研究 癌症研究
背景情况:
- 皮质到介质细胞的过渡 (EMT) 对黑色素瘤的入侵和转移至关重要.
- 黑色素瘤细胞从E-cadherin转换为N-cadherin,以粘附于树突纤维细胞.
- 在黑色素瘤中对卡德林切换的调节仍然不太清楚.
研究的目的:
- 研究与癌症相关纤维细胞 (CAFs) 中的YES相关蛋白1 (YAP1) 在黑色素瘤进展中的作用.
- 阐明CAFs影响黑色素瘤细胞粘附和通过cadherins信号传递的机制.
主要方法:
- 利用了一个BRAF突变小鼠黑色素瘤模型.
- 在CAF中操纵YAP1表达 (消去和过度表达).
- 采用RNA测序 (RNA-Seq) 来识别YAP1.1的下游影响者.
- 评估黑色素瘤生长,入侵和信号通路 (PI3K-AKT) 在体内和体外.
主要成果:
- 在CAF中YAP1的切除抑制了黑色素瘤的进展,而YAP1的过度表达加速了它.
- N-cadherin被确定为CAF中YAP1信号的关键下游目标.
- 在CAF中抑制YAP1导致CAF和黑色素瘤细胞中的N-cadherin下调.
- 低调N-cadherin抑制了黑色素瘤细胞中的PI3K-AKT信号传递,抑制了瘤的生长.
结论:
- CAFs通过YAP1介导的N-cadherin表达来调节黑色素瘤细胞的入侵和转移.
- 在CAF中YAP1信号传递通过N-cadherin影响黑色素瘤细胞粘附和PI3K-AKT通路活性.
- 在CAF中准YAP1或破坏N-cadherin相互作用为黑色素瘤提供了潜在的治疗策略.
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