低酸素誘導因子を抑制する因子の選択的阻害
Michael A McDonough1, Luke A McNeill, Melanie Tilliet
1The Department of Chemistry and The Oxford Centre for Molecular Sciences, Chemistry Research Laboratory, University of Oxford, Mansfield Road, Oxford, OX1 3TA, United Kingdom.
Journal of the American Chemical Society
|May 26, 2005
まとめ
研究者らは,低酸素誘導因子アスパラギニルヒドロキシラーゼ (FIH) の選択的阻害剤であるN-オクサリル-d-フェニラララニンを発見した. この発見は,治療用遺伝子上位調節のための低酸素反応を調節するのに役立ちます.
科学分野:
- バイオケミストリー バイオケミストリー
- 分子生物学は分子生物学である.
- 薬理学 薬理学とは
背景:
- 低酸素誘導因子 (HIF) は,動物の低酸素反応に極めて重要です.
- HIFの鉄 (II) と2オキシグルタラート依存酵素による水酸化により,その分解と活性が調節されます.
- HIFヒドロキシラーゼをターゲットにすることは,遺伝子調節のための治療的可能性を秘めています.
研究 の 目的:
- HIFヒドロキシラゼの選択的阻害剤を発見すること.
- HIFアスパラギニルヒドロキシラーゼ (FIH) の阻害メカニズムを理解するために.
- 低酸素反応の調節における治療的応用を探求する.
主な方法:
- 阻害剤発見のために構造データと固体相合成を活用した.
- HIFヒドロキシラゼに対する阻害体の選択性をテストしました.
- FIHで複合した阻害体の結晶構造を決定した.
主要な成果:
- 特定されたN-オクサリル-d-フェニララニンは,FIHの選択的阻害体であり,HIFプロリルヒドロキシラーゼではありません.
- 阻害剤は,FIHの2オキシグルタレートと酸化酸素結合部位に結合する.
- FIHの抑制に関する構造的な洞察が得られた.
結論:
- N-オクサリル-d-フェニララニンは,強力で選択的なFIH阻害剤です.
- この阻害剤は,低酸素反応を調節するために使用することができます.
- エリトロポエチンや血管内皮成長因子などの医学的に重要な遺伝子を上位調節する可能性がある.
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