薬剤耐性感染症に対する新しい抗生物質の合理的な設計
Thomas F Durand-Reville1, Alita A Miller1, John P O'Donnell1
1Entasis Therapeutics, Waltham, MA, USA.
Nature
|September 16, 2021
まとめ
研究者は薬剤耐性グラム陰性細菌と戦うために,新しい抗生物質ETX0462を開発しました. この新しいダイアザビサイクロオクタン化合物は 主要な抵抗メカニズムを克服し 危険な感染症に対する希望を与えてくれます
科学分野:
- 薬剤化学
- 微生物学
- 薬物の発見
背景:
- 抗生物質耐性の増加は,グラム陰性細菌感染症の新たな治療法を必要としています.
- 既存の治療法はベータ・ラクタマゼや外膜の不透性などの抵抗メカニズムに 挑戦されています
研究 の 目的:
- グラムネガティブな細菌のペニシリン結合タンパク質を標的とした新しいダイアザビサイクロオクタン阻害剤を設計する.
- ベータ・ラクタマース活性と外膜浸透を含む複数の抵抗メカニズムを克服する.
主な方法:
- ダイアザビサイクロオクタン化合物の合理的な設計
- 鉛化合物を再設計して in vivo 効果と標的スペクトル
- 生化学的効能と並行してポリン浸透性を最適化します
主要な成果:
- 新しい抗生物質ETX0462を 開発しました
- ETX0462は,Pseudomonas aeruginosa,ESKAPE病原体,Stenotrophomonas maltophilia,および生物脅威病原体に対する有効性を示しています.
- この化合物はベータ・ラクタメーゼの存在下で活性を維持し,外側の膜の障壁を克服します.
結論:
- ETX0462は,生命を脅かすグラム陰性細菌感染症の治療のための有望な新しい化学型を表しています.
- この化合物の好ましい臨床前安全性プロファイルは,臨床開発の可能性を支えている.
- これは抗生物質耐性対策における 25年以上の 重要な進歩です
関連する概念動画
Development of Antibiotic Resistance
536
Antibiotic resistance is a major public health concern that arises when bacteria evolve mechanisms to withstand the effects of antibiotic treatments. This resistance can be intrinsic, acquired through genetic mutations, or transferred between bacteria via horizontal gene transfer. The development of antibiotic resistance poses significant challenges in treating bacterial infections and necessitates ongoing research to develop new therapeutic strategies.Intrinsic resistance occurs when bacterial...
536
Antibiotic Selection
56.7K
Overview
56.7K
Structure-Activity Relationships and Drug Design
1.2K
Drug design is a dynamic field that involves discovering and developing new medications based on specific biological targets. This process heavily relies on structure-activity relationships (SAR) and quantitative structure-activity relationships (QSAR) to guide the design and optimization of efficient drugs.
SAR studies the intricate relationship between a drug's chemical structure and biological activity. It focuses on understanding how modifications to a drug's structure can influence...
SAR studies the intricate relationship between a drug's chemical structure and biological activity. It focuses on understanding how modifications to a drug's structure can influence...
1.2K
Combined Effects of Drugs: Synergism
5.1K
Synergism is a useful mechanism where combining two or more drugs is more effective than each constituent used alone. Such combinations are also called supra-additive interactions. The drugs collectively enhance the final therapeutic effect by acting on different targets. Another advantage is that the low dose of each constituent drug is sufficient to achieve the desired effect. This helps reduce the duration of therapy and lower the adverse effects of these drugs.
Such synergistic combinations...
Such synergistic combinations...
5.1K
Biopharmaceutical Factors Influencing Drug Product Design: Overview
41
Rational drug product design integrates knowledge of the drug’s physicochemical properties, formulation components, manufacturing techniques, and intended route of administration. Each factor influences the drug’s performance, including how it is released, absorbed, and eliminated in the body.The physicochemical properties of a drug—such as solubility, stability, and particle size—affect its compatibility with excipients and the choice of dosage form. Excipients, though...
41
Gene Regulation in Microbial Communities: Quorum Sensing
144
Quorum sensing is a mechanism of bacterial communication that enables coordinated gene expression in response to changes in population density. This facilitates collective behaviors that enhance survival, resource acquisition, and ecological adaptation. This process relies on small signaling molecules called autoinducers that accumulate as bacterial populations grow. When a critical threshold concentration of autoinducers is reached, bacterial cells collectively modify gene expression,...
144


