結核の治療のための小分子ニトロイミダゾピラン薬剤候補である
C K Stover1, P Warrener, D R VanDevanter
1PathoGenesis Corporation, Seattle, Washington 98119, USA. kstover@pathogenesis.com
Nature
|July 6, 2000
まとめ
新しいニトロイミダゾピラン化合物は,Mycobacterium tuberculosisに対して強力な活性を示しています. これらの化合物は,複製している細菌と休眠している細菌の両方を殺し,多剤耐性菌株を含む結核に対する有望な新しい治療法を提供します.
科学分野:
- 薬用化学 薬用化学について
- 微生物学 微生物学とは
- 感染症 感染症は感染症です.
背景:
- 結核 (TB) は,世界中で主要な感染症による死因であり,何百万人もの人々がMycobacterium tuberculosisに感染しています.
- 多剤耐性結核の増加とHIVとの相乗効果は,新しい抗結核薬の緊急の必要性を強調しています.
- 30年以上にわたり,新しいメカニズムを持つ新しい結核薬は開発されていない.
研究 の 目的:
- 抗結核活性を持つ新しい化合物を発見し,特徴づけること.
- これらの新しい化合物の作用機構を調査する.
- 薬剤耐性および潜伏形態のM. tuberculosisに対するその有効性を評価する.
主な方法:
- ニトロイミダゾピラン化合物の合成.
- 複製および静的なM. tuberculosisに対する抗結核活性に関するインビトロ試験.
- M. tuberculosis F420コファクターを含む作用メカニズムの評価.
- 動物モデルにおける鉛化合物PA-824の体内評価.
主要な成果:
- 一連のニトロイミダゾピラン化合物は,有意な抗結核活性を示した.
- 化合物は,M. tuberculosis F420コファクターによって活性化され,タンパク質と細胞壁の脂質合成を阻害しました.
- ニトロイミダゾピランは,複製および静的M. tuberculosisの両方に抗菌作用を示した.
- 鉛化合物PA-824は,多剤耐性M.結核に対する強力な活性を示し,動物モデルにおける口服による良好な生物利用性を示した.
結論:
- ニトロイミダゾピランは,結核治療の可能性のある小分子の一種を代表しています.
- これらの化合物は,休眠型および耐性菌株を含む,多様なM.結核集団に対する殺菌作用を有する.
- ニトロイミダゾピランのさらなる開発は,新しい結核治療法の危機的な未満たされたニーズに対処することができます.
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