主な代謝遺伝子の臨床的に重要な変異は,抗生物質耐性を授与する
Allison J Lopatkin1,2,3,4,5,6, Sarah C Bening1,2, Abigail L Manson2
1Institute for Medical Engineering and Science and Department of Biological Engineering, Massachusetts Institute of Technology (MIT), Cambridge, MA, USA.
まとめ
抗生物質耐性は 伝統的なメカニズムではなく 代謝の変化から生じます Escherichia coliの代謝の変化は,呼吸とトリカルボキシル酸循環の活性を下げることで,薬剤の致死性を減少させます.
科学分野:
- 微生物学
- 分子生物学
- 遺伝学
背景:
- 抗生物質耐性は 世界的な健康上の脅威です
- 伝統的に,耐性は薬物の標的改変,無活性化,または輸送に関連しています.
- 代謝過程は抗生物質耐性研究でしばしば見過ごされます.
研究 の 目的:
- エシェリキア・コリの抗生物質耐性における代謝の役割を調査する.
- 抗生物質耐性に関与する新しい遺伝子と経路を特定する.
- 代謝適応が抗生物質の致死性に影響する方法を理解する.
主な方法:
- 異なった代謝条件下で抗生物質に適応したEscherichia coliの配列と分析.
- 関連する変異を特定するための臨床単離の比較ゲノミクス.
- 代謝変化が抗生物質の死亡率に与える影響を評価する.
主要な成果:
- 耐性に関与する炭素とエネルギーの中央代謝における評価されていない非正規遺伝子を特定した.
- 基礎呼吸を含む代謝適応は,抗生物質による毒性を防ぐことが判明しました.
- 特定の代謝関連の突然変異は,臨床エシェリキア・コライの病原体で過剰に報告された.
結論:
- 代謝過程は 抗生物質耐性において 重要で過小評価されている役割を果たします
- 変化した代謝は 抗生物質に対する生存上の優位性を 薬の致死率を最小限に抑えることで 提供することができる.
- 抗生物質耐性における代謝適応の臨床的重要性を強調しています.
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