Cyfip1は,上皮がんの潜在的侵襲抑制剤である
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
まとめ
腫瘍抑制遺伝子であるCyfip1は,上皮がんでは頻繁に削除されます. 減少した発現は細胞結合を阻害し,がんの侵入を促進し,腫瘍の広がりを抑制する役割を示唆しています.
科学分野:
- 腫瘍学 腫瘍学
- 分子生物学は分子生物学である.
- 遺伝学 遺伝学とは
背景:
- 腫瘍抑制剤を特定することは,がんにおける多数の遺伝的変異のために困難です.
- 癌における染色体欠損は,重要な腫瘍抑制遺伝子を宿す可能性があります.
研究 の 目的:
- ヒトがんの削除された領域内の新しい腫瘍抑制遺伝子を特定する.
- 皮質がんの進行におけるCyfip1 (細胞質FMRP相互作用タンパク質1) の役割を調査する.
主な方法:
- 高解像度ゲノム分析で,削除された領域を特定します.
- 遺伝子サイレンシングのためのRNA干渉 (RNAi) を利用した2段階の遺伝子研究.
- エピテリアモルフォゲネシスに関するインビトロ研究と,腫瘍性Ras.
主要な成果:
- 細胞骨格を調節するWAVE複合体のサブユニットであるCyfip1は,上皮がんで頻繁に削除されます.
- 減少したCYFIP1発現は,腫瘍の侵入と悪い予後と相関しています.
- Cyfip1の静止は,上皮質の形態変異,細胞結合,細胞-細胞外マトリックス相互作用を妨げます.
- Cyfip1の喪失は,腫瘍性Rasと協力し,侵襲性がん形成を誘発する.
結論:
- Cyfip1は腫瘍抑制剤として機能し,特に侵入抑制遺伝子である.
- WAVE調節されたアクチンダイナミクスの変化は,細胞結合とマトリックス相互作用の障害によってがんの侵入に寄与する.
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