rrg遺伝子の発現は,LTR-c-H-rasによって変換されたNIH 3T3の逆転と関連しています
S Contente1, K Kenyon, D Rimoldi
1Department of Pathology, Uniformed Services University of the Health Sciences, Bethesda, MD 20814-4799.
まとめ
通常NIH 3T3細胞に存在するマウス遺伝子 rrgは,がんの発症時に抑制されます. 変形した細胞におけるRRG発現を回復させることで,腫瘍形成を逆転させ,腫瘍抑制剤としての役割を示した.
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
- 細胞の変容 細胞の変容
背景:
- rrg遺伝子は通常,マウスNIH 3T3細胞で発現する.
- LTR-c-H-rasによって誘発される細胞変容は,RRG発現をダウン調節する.
- インターフェロン治療は,再発性RRGを持つ持続的なリバータント細胞系につながる可能性があります.
研究 の 目的:
- 細胞変容と腫瘍発生における rrg 遺伝子の役割を調査する.
- rrgの再発現が変異した表型を逆転させ,腫瘍形成を抑制できるかどうかを判断する.
主な方法:
- rrg遺伝子の部分的な補完DNAの分離.
- 反感覚および感覚発現ベクトルの持久性リバータント細胞の安定した転移.
- 裸のマウスの細胞形態,RRGメッセンジャーRNAレベル,および腫瘍発生性の評価.
主要な成果:
- 反感覚RRG発現ベクトルは,変異したフェノタイプを誘導し,RRG mRNAを減少させ,リバータント細胞における腫瘍発生性を引き起こした.
- Sense rrg発現ベクトルは,正常なフェノタイプ,メッセージレベル,またはリバータント細胞の非腫瘍起源性に影響しませんでした.
- 変形した細胞におけるRRGの再発は,腫瘍発生性の喪失と相関する.
結論:
- rrg遺伝子は腫瘍抑制剤として機能する.
- rrgのダウンレギュレーションは,変異したおよび腫瘍発生性現象型の開発に不可欠です.
- RRG発現を調節することは,がんに対する潜在的な治療戦略を提供します.
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