E1aの変容領域の新たな機能:AP-1活動抑制
R Offringa1, S Gebel, H van Dam
1Sylvius Laboratories, Laboratory for Molecular Carcinogenesis, University of Leiden, The Netherlands.
Cell
|August 10, 1990
まとめ
アデノウイルスE1aタンパク質は,AP-1転写因子を阻害することによって,コラーゲネーゼ遺伝子転写を独特に抑制します. この抑圧は,E1aに依存している.
科学分野:
- 分子生物学は分子生物学である.
- 腫瘍学 腫瘍学
- ウイルス学 ウイルス学 ウイルス学
背景:
- アデノウイルスE1aは,重要な発がん性タンパク質です.
- AP-1は,コラーゲネーゼ遺伝子発現を調節する重要な転写因子です.
- フォルボールエステル反応性要素 (collTRE) は,この調節を媒介する.
研究 の 目的:
- アデノウイルスE1aがコラーゲネーゼ遺伝子転写を抑制するメカニズムを調査する.
- E1a媒介による抑圧におけるAP-1の役割を決定する.
- この機能に責任を負うE1aの特定のドメインを特定します.
主な方法:
- レポーター遺伝子アッセイは,コラーゲネーゼの遺伝子転写を測定する.
- AP-1タンパク質合成とDNA結合を評価するためのウェスタン・ブロッティング.
- 機能ドメインをマッピングするために,E1a保存領域の分析.
主要な成果:
- アデノウイルスE1aは,collTRE.を介してコラーゲネーゼ遺伝子転写を抑制する.
- E1aは,AP-1の合成,DNA結合,または組成に影響を与えることなく,AP-1のトランス活性化機能を抑制します.
- 抑制は,E1aの保存された領域1に依存し,これは既知の変形領域である.
結論:
- アデノウイルスE1aは,支配的な腫瘍遺伝子の間で,AP-1をダウンモジュールするユニークな能力を有しています.
- この抑制メカニズムは,アデノウイルス媒介の細胞変容の不可欠な部分です.
- E1a-AP-1の相互作用をターゲットにすることで,アデノウイルス関連がんにおける新たな治療戦略を提供することができる.
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