Cyfip1 是一种在上皮癌中被假定的侵袭抑制剂
Jose M Silva1, Elena Ezhkova, Javier Silva
1Watson School Biological Sciences, Howard Hughes Medical Institute, Cold Spring Harbor Laboratory, Cold Spring Harbor, NY 11724, USA.
Cell
|June 16, 2009
概括
瘤抑制基因Cyfip1在上皮癌中经常被删除. 它的减少表达会损害细胞粘附,促进癌症的入侵,这表明它在抑制瘤扩散方面的作用.
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:
- 鉴定瘤抑制剂是困难的,因为癌症的许多遗传变化.
- 癌症中的染色体缺失可能含有关键的瘤抑制基因.
研究的目的:
- 在人类癌症中,在被删除区域内识别新的瘤抑制基因.
- 研究Cyfip1 (细胞质FMRP相互作用蛋白1) 在上皮癌进展中的作用.
主要方法:
- 高分辨率的基因组分析以确定删除的区域.
- 使用RNA干扰 (RNAi) 进行基因沉默的两阶段遗传研究.
- 在体外研究上皮质形态发生和体内研究与瘤性Ras.
主要成果:
- Cyfip1,一个调节细胞骨的WAVE复合体子单元,在上皮癌中经常被删除.
- 减少CYFIP1表达与瘤入侵和不良预后相关.
- 抑制Cyfip1会破坏上皮质形态发生,细胞粘附和细胞-细胞外基质相互作用.
- Cyfip1的损失与瘤性Ras合作,驱动侵入性癌瘤的形成.
结论:
- Cyfip1作为一种瘤抑制剂,特别是一种入侵抑制基因.
- 通过细胞粘附和基质相互作用的受损,WAVE调节的行为动态的变化有助于癌症的侵袭.
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