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ディデムニンの抗がん剤の細菌生物合成と成熟
Ying Xu1, Roland D Kersten, Sang-Jip Nam
1KAUST Global Collaborative Research, Division of Life Science, School of Science, Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong, China.
Journal of the American Chemical Society
|March 31, 2012
まとめ
マリン・チュニカットは抗癌化合物を産出するが,供給は限られている. これらのデデムニンは実際には細菌によって作られ,薬剤の生産と開発のための新しい経路を提供します.
科学分野:
- 海洋自然産物とは
- バクテリアの生物合成.
- ドラッグ・ディスカバリー・ドラッグ・ディスカバリー
背景:
- トリディデムヌム・ソリジウム (Trididemnum solidum) の海洋天然産物であるディデムニンBは,ヒトでの臨床試験における最初の海洋薬剤でした.
- ディデムニンの限られた供給と複雑な構造は,薬の開発を妨げ,アプリジン (デヒドロディデムニンB) の臨床試験に影響を与えています.
研究 の 目的:
- ディデムニンの源を特定し,その生物合成経路を解明する.
- ディデムニンベースの抗癌剤の供給制限に対処するために.
主な方法:
- Tistrella mobilis.の全ゲノムシーケンシングについて
- 推定ディデムニン生物合成遺伝子クラスター (did) の分析.
- 先駆体変換を観察するためにイメージング質量スペクトロメトリ.
主要な成果:
- ディデムニンは,海洋α-プロテオバクテリアであるTistrella mobilisとTistrella bauzanensisによって合成された細菌産物である.
- ディデムニン生物合成遺伝子クラスター (did) は,T. mobilis.のメガプラズミドで特定されました.
- ディデムニンXとYは最初に合成され,その後,新しいポストアセンブリメカニズムを通じて細胞外でディデムニンBに変換されます.
結論:
- ディデムニンの細菌起源は,これらの海洋天然製品の供給問題を解決します.
- ディスカバリーによって,遺伝子工学が新しいデデムニン・アナログの開発に役立っています.
- この発見は,ディデムニンベースの治療法を開発するための新しい道を開きます.
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