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GPI Anchoring of Proteins in the ER Membrane
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バクテリアRNAポリメラーゼの抗菌ヌクレオシドアナログ阻害剤
Sonia I Maffioli1, Yu Zhang2, David Degen2
1NAICONS Srl, 20139 Milan, Italy; Vicuron Pharmaceuticals, 21040 Gerenzano, Italy.
Cell
|June 17, 2017
まとめ
科学者たちは,バクテリアのRNAポリメラーゼ (RNAP) を阻害する新しい化合物である偽ウリジミシン (PUM) を発見しました. この有望な薬剤候補は 薬剤耐性細菌に対する強力な活性を示し,マウスの感染を治します.
科学分野:
- 微生物学
- 薬物の発見
- 生物化学
背景:
- 薬剤耐性の細菌病原菌は 世界的に健康に重大な脅威をもたらしています
- 抗菌剤耐性に対抗するために 新しい治療戦略が緊急に必要です
研究 の 目的:
- 薬剤耐性病原体に対する活性を持つバクテリアのRNAポリメラーゼ (RNAP) の新しい阻害剤を発見し,特徴づけること.
- 特定された化合物である偽ウリジミシン (PUM) の抗菌効果と作用機構を評価する.
主な方法:
- 潜在的抗菌化合物を特定するために微生物抽出物のスクリーニング
- RNAPの抑制と選択性を評価する in vitro 生化学的測定法
- マウスモデルを用いたin vivo試験で,バクテリア感染の除去におけるPUMの有効性を評価した.
主要な成果:
- ヌクレオシドアナログである偽ウリジミシン (PUM) は,バクテリアのRNAPの強力な阻害剤として特定されました.
- PUMは,薬剤耐性病原体に対する広範囲の抗菌作用を in vitro および in vivo で示した.
- PUMは,リファミシンとは異なる異なるメカニズムで,NTP添加部位でUTPと競合するRNAPを抑制する.
結論:
- PUMは耐性菌株に対する抗菌薬の開発に 有望な新しい鉛化合物です
- 独特の作用機構と低自発性耐性率は,既存の耐性課題を克服する可能性を示唆しています.
- PUMはリファミシンと相乗効果を示し,組み合わせ治療の可能性を秘めています.
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