mTORシグナル伝達のトランスレーション環境は,がんの発症と転移を誘導する
Andrew C Hsieh1, Yi Liu, Merritt P Edlind
1School of Medicine and Department of Urology, Helen Diller Family Comprehensive Cancer Center, University of California, San Francisco, California 94158, USA.
Nature
|February 28, 2012
まとめ
腫瘍性mTORシグナリングは,前立腺がん遺伝子の特異的な翻訳を駆動し,転移を促進します. INK128という新しいmTOR阻害剤は,このシグネチャーを効果的に再プログラムし,不治の前立腺がんの転移に治療的可能性を秘めています.
科学分野:
- 分子生物学は分子生物学である.
- がん研究 がん研究
- 翻訳医学は翻訳医学である.
背景:
- 哺乳類のラパミシン (mTOR) キナーゼの標的は,タンパク質合成,細胞成長,癌を調節する.
- がん発症における遺伝子発現の下流トランスレーション制御は十分に理解されていません.
研究 の 目的:
- 前立腺がんの遺伝子発現と転移における腫瘍性mTORシグナル伝達の役割を調査する.
- 前立腺がんの侵入を駆動する翻訳的に調節された遺伝子とメッセンジャーRNA (mRNA) を特定する.
- 前立腺がんの転移に対するmTOR阻害剤の治療の可能性を評価する.
主な方法:
- 前立腺がんにおける遺伝子翻訳を分析するためにリボソームのプロファイリング.
- 侵襲性mRNAの機能的特徴. 侵襲性mRNAの機能的特徴. 侵襲性mRNAの機能的特徴. 侵襲性mRNAの機能的特徴. 侵襲性mRNAの機能的特徴. 侵襲性mRNAの機能的特徴.
- mTORのATPサイト阻害剤 (INK128) の開発と試験.
主要な成果:
- 腫瘍性mTORシグナリングは,増殖,代謝,侵入に関与する前立腺がん遺伝子の特殊翻訳を指示する.
- 翻訳的に制御されたプロ侵入性mRNAの特定のクラスは,mTORのダウンストリームで前立腺がんの侵入と転移を駆動する.
- INK128は,この遺伝子発現シグネチャーを効果的に再プログラムし,前立腺がんの転移の臨床前モデルの治療効果を示しています.
結論:
- この研究は,mTORによって調節される"がん性"翻訳機構が,転移などの特定の癌の行動をどのように誘導するかを明らかにしています.
- INK128のような阻害剤でこの翻訳機構をターゲットにすることは,前立腺がんの転移に対する有望な治療戦略です.
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