最適化されたアリロミシンは,グラム陰性抗生物質の新種である
Peter A Smith1, Michael F T Koehler2, Hany S Girgis3
1Department of Infectious Diseases, Genentech, South San Francisco, CA, USA. smith.peter@gene.com.
Nature
|September 14, 2018
まとめ
科学者たちは天然の産物である アリロミシンを最適化して 多剤耐性グラム陰性細菌に効く強力な抗生物質G0775を作りました この新薬は I型細菌のシグナルペプチダースを標的とし 耐性感染症と闘う新しいアプローチを 提供しています
科学分野:
- 微生物学
- 薬剤化学
- 薬物の発見
背景:
- 多剤耐性細菌,特にグラム陰性病原菌は,世界的な健康に重大な脅威をもたらしています.
- グラム陰性細菌を標的とする新しい抗生物質のクラスは50年以上承認されず,新しい治療戦略の緊急性を強調しています.
- 抗生物質の開発には 歴史的に重要な源となっています
研究 の 目的:
- アリロミシンを化学的に最適化し, 制限されたスペクトルと活性を持つ天然製品で, グラム陰性細菌に対する強力な薬剤を開発します.
- 現代の多剤耐性臨床単離体に対して有効な新しい抗生物質候補を特定し,特徴づけること.
- 重要な細菌標的に対する抗生物質の作用の新しい分子メカニズムを探求する.
主な方法:
- アリロミシン天然製品の化学最適化
- 多剤耐性菌株を含むグラム陰性菌群に対する抗菌性の評価
- in vitroおよびin vivo感染モデルでの有効性の評価
- バクテリアのタイプIシグナルペプチダース抑制に焦点を当てた分子作用機構の調査.
主要な成果:
- グラム陰性細菌に対する強力な広範囲の活性を持つ最適化されたアリロミシンアナログであるG0775の開発.
- G0775は,同時代の多剤耐性グラム陰性臨床単離体に対して in vitroで有効性を示した.
- この化合物は,いくつかの in vivo モデルで感染を成功裏に治療しました.
- G0775は,既存の耐性経路を回避して,前例のないメカニズムで,細菌の重要なタイプIシグナルペプチダースを阻害します.
結論:
- G0775のような最適化されたアリロミシン類は,有望な新種の抗生物質を表しています.
- 多剤耐性グラム陰性感染症に対する治療戦略として,G0775の新たな作用機構と広範囲の活性が提供されています.
- G0775のさらなる開発は,挑戦的な細菌病原体に対する効果的な治療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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