新しい抗体-抗生物質結合剤は,細胞内S. aureusを排除する
Sophie M Lehar1, Thomas Pillow2, Min Xu3
1Infectious Diseases Department, Genentech Inc., South San Francisco, California 94080, USA.
Nature
|November 5, 2015
まとめ
細胞内にある Staphylococcus aureusは 抗生物質から逃れる 弾性のある貯水池を形成します 新種の抗体-抗生物質結合剤は 耐性菌を効果的に標的にし 駆除し 新しい治療戦略を提供しています
科学分野:
- 微生物学
- 免疫学
- 感染症
背景:
- Staphylococcus aureusは主に細胞外病原体として見られています.
- S. aureusの細胞内生存は,抗生物質で保護された貯水池を作り出し,持続的な感染と治療の失敗につながります.
- 細胞内細菌貯蔵庫の理解は 効果的な治療法の開発に不可欠です
研究 の 目的:
- 細胞内 Staphylococcus aureusが持続的な感染症の貯蔵庫としての役割を調査する.
- 細胞内S. aureusを標的とした新しい治療戦略を開発し評価する.
- 従来の抗生物質と比較して新薬の有効性を評価する.
主な方法:
- ネズミのモデルにおける細胞内S. aureus貯蔵庫の確認
- S. aureusを標的とした抗体-抗生物質結合体 (AAC) の開発
- バンコマイシンの存在におけるS. aureusバクテレミアの治療におけるAACの有効性の評価
- 宿主細胞内の細菌生存の評価
主要な成果:
- 細胞内S. aureus集団は,バンコミシン治療中でも感染を確立できる毒性の貯蔵庫であると確認された.
- 開発された抗体抗生物質結合体は,細胞内S. aureusの除去に有意な効果を示した.
- AACはS. aureusバクテレミアの治療においてバンコミシンを上回り,細胞内細菌に対する有効性を強調した.
- 細胞内S. aureusが侵襲性感染症の重要な要因であることの直接的な証拠が提供されました.
結論:
- 細胞内 Staphylococcus aureusは,抗生物質耐性のある重要な貯蔵庫であり,持続的な感染症に貢献しています.
- 新しい抗体-抗生物質結合は,細胞内S. aureusを根絶するための有望な治療方法を提供します.
- 侵入性S. aureus感染症の治療失敗を克服するために,細胞内細菌貯蔵庫をターゲットにすることが不可欠です.
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