抗微生物金属ポリマーおよびそのバイオコンジュガートは,多剤耐性細菌に対する従来の抗生物質と併用されます
Jiuyang Zhang1, Yung Pin Chen, Kristen P Miller
1Department of Chemistry and Biochemistry, and ‡Department of Environmental Health Sciences, University of South Carolina , Columbia, South Carolina 29208, United States.
Journal of the American Chemical Society
|March 18, 2014
まとめ
新しい充電メタルポリマーは,従来の薬物を保護し,細菌を殺すことによって,抗生物質耐性に対抗します. このアプローチは,MRSAのような多剤耐性菌株に対する希望を提供します.
科学分野:
- ポリマー化学のポリマー化学について
- 抗菌薬の研究について
- マテリアルサイエンス 材料科学
背景:
- 抗生物質耐性は,メチシリン耐性黄金球菌 (MRSA) のような多剤耐性バクテリアが重要な課題を提示する世界的な健康上の脅威です.
- MRSAは,β-ラクタマース活性などのメカニズムを通じて,従来のβ-ラクタム抗生物質を無効化し,治療の失敗,死亡率の増加,医療費の増加につながります.
研究 の 目的:
- 多剤耐性細菌,特にMRSAに対する新しい治療戦略を開発する.
- 従来のβ-ラクタム抗生物質と組み合わせた電荷金属ポリマーの相乗効果を調査する.
主な方法:
- カチオンのコバルトセニウム分子を組み込んだ電荷金属ポリマーの一種を合成した.
- メタルポリマーがβ-ラクタマース活性を抑制し,β-ラクタム抗生物質を水解から保護する能力を評価した.
- バクテリア細胞溶解を含む,メタルポリマーの直接的な殺菌効果を評価した.
主要な成果:
- 充電された金属ポリマーはβ-ラクタマースの強力な阻害を示し,ペニシリン-G,アモキシシリン,アンピシリン,セファゾリンなどの抗生物質の有効性を保持しました.
- 抗生物質のカルボキシラートアニオンとポリマーカチオン分子の間のイオンペアの形成は,抗生物質を酵素分解から保護しました.
- 金属ポリマーは細菌細胞の直接溶解を示し,MRSAに対する全体的な有効性に寄与しました.
結論:
- 充電メタロポリマーは,抗生物質耐性細菌との闘いに有望な連携的アプローチを提供します.
- この戦略は,MRSAのようなスーパーバクテリアに対する従来の抗生物質の活力を回復させることができます.
- この発見は,次世代の抗微生物療法のためのマクロモレキュラー・スキャファッドの設計に新たな道を開く.
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