抗生物質開発のためのQseCシグナル伝達と毒性をターゲットにしています
David A Rasko1, Cristiano G Moreira, De Run Li
1Department of Microbiology, University of Texas (UT) Southwestern Medical Center, Dallas, TX 75390, USA.
Science (New York, N.Y.)
|August 23, 2008
まとめ
新しい化合物であるLED209は,重要なセンサーキナーゼであるQseCを介してバクテリアのシグナル伝達をブロックする. この抑制は,細菌を傷つけることなく病原体の毒性を減少させ,広範囲の抗菌薬の開発のための新しい戦略を提供します.
科学分野:
- 微生物学 微生物学とは
- バクテリア病原菌の発生
- ドラッグ・ディスカバリー・ドリッグ・ディスカバリー・ドリッグ・ディスカバリー・ドリッグ・ディスカバリー
背景:
- 細菌の病原体は,QseCのような保存されたセンサーキナーゼを利用する.
- QseCは,宿主および細菌の信号に反応して,ウイルス性因子の発現を媒介する.
研究 の 目的:
- QseCシグナル伝達の阻害剤を特定するために.
- このような阻害剤が新型抗菌剤としての可能性を評価する.
主な方法:
- QseCを標的とする小分子を特定するための高通量スクリーニング.
- QseCの自己リン酸化と毒性の遺伝子発現に対するLED209の効果を評価する.
- LED209の毒性と細菌の増殖への影響を in vitroとin vivoで評価する.
主要な成果:
- LED209はQseC阻害体として特定され,信号結合と自己リン酸化を阻害しました.
- LED209は,複数の細菌病原体における毒性を有意に減少させました.
- この化合物は,細菌に対する毒性や病原体の増殖の抑制を示さなかった.
結論:
- LED209によるQseCシグナル伝達を阻害することは,広範囲の抗菌剤を開発するための有望な戦略です.
- 毒性のメカニズムをターゲットにすることで,従来の成長阻害抗生物質の代替手段が提供されます.
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