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ヒトのIFN-α1およびIFN-β遺伝子のウイルス誘導性を媒介する経路は異なる
N J MacDonald1, D Kuhl, D Maguire
1Institut für Molekularbiologie I, Universität Zürich, Switzerland.
Cell
|March 9, 1990
まとめ
マルチメライズされたGAAANN配列は,ウイルス誘導性プロモーターを調節する. これらの配列の異なるタイプは,インターフェロン (IFN) とIRF-1に対する異なる応答を媒介し,遺伝子転写に影響を与えます.
科学分野:
- 分子生物学は分子生物学である.
- ウイルス学 ウイルス学 ウイルス学
- 遺伝学 遺伝学とは
背景:
- ウイルス誘導性プロモーターには,GAAANNのような繰り返し配列が含まれていることが多い.
- これらの規制要素を理解することは,宿主-病原体相互作用の解読に不可欠です.
研究 の 目的:
- ウイルスの誘導性における様々な (GAAANN) 4の配列型の機能的役割を区別する.
- これらの配列に関連する特定の転写因子を特定するために.
主な方法:
- (GAAANN) 4の配列変数とそのプロモーター活動への影響の分析.
- タンパク質結合を特定するために,電泳運動移転シフトアッセイ (EMSAs) を行う.
主要な成果:
- 3種類の (GAAANN) 4配列が識別され,インターフェロン (IFN) とIRF-1に対する反応によって異なる.
- タイプI配列はIFN/IRF-1応答と遺伝子静止を媒介する.
- タイプIIとタイプIIIの配列は,異なった転写パターンを示し,特定の因子 (それぞれTGタンパク質とIEFga) を結合します.
- IFN-βおよびIFN-alpha 1プロモーターは,NF-kappa Bを含むこれらの要素の異なる組み合わせを使用します.
結論:
- (GAAANN) 4配列のマルチメリゼーションは,ウイルス反応の明確な規制要素を生成します.
- タイプI,タイプII,NF-カッパB要素は,ウイルスの誘導に収束する別々の経路を表しています.
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