ヒトの微生物群は,抗糖尿病薬であるアカルボースに対する耐性をコード化しています
Jared Balaich1, Michael Estrella1, Guojun Wu2
1Department of Molecular Biology, Princeton University, Princeton, NJ, USA.
Nature
|November 25, 2021
まとめ
人間の腸内細菌は 抗糖尿病薬であるアカルボスを無効にする酵素を持っています この発見は 抗生物質以外の薬に対する 微生物の耐性を明らかにし 薬の有効性や 微生物の防御メカニズムに関する 新たな視点を提示しています
科学分野:
- 微生物学
- 生物化学
- 薬理学について
背景:
- ヒトの微生物群には,多くの特徴のない酵素と代謝経路が含まれています.
- アカルボースはアルファグルコシダースを阻害し,炭水化物の代謝に影響を与える抗糖尿病薬である.
研究 の 目的:
- アカルボースを改変するヒトの微生物の酵素を特定し,特徴づけること.
- 微生物群によるアカルボース耐性のメカニズムと流行を理解する.
主な方法:
- メタゲノム解析で 新しい酵素を発見する
- 酵素の活性を確認するための生化学分析
- 酵素構造を決定するX線結晶学
主要な成果:
- ヒトの腸内および口腔微生物群でアカルボースをリン酸化し,無活性化する細菌酵素 (アカルボースキナーゼ) の発見.
- これらの酵素はアカルボースに特異的であり,宿主細菌に生存上の優位性を与える.
- アカルボース不活性化酵素は,多様なヒト集団に共通しています.
結論:
- ヒトの微生物群は,抗糖尿病薬であるアカルボスに広く抵抗性を示しています.
- この抵抗は構造的に類似した内生性分子に対する防御メカニズムとして進化した.
- 薬物の代謝と有効性に対する微生物群の影響を強調しています.
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