アミノグリコシド,グアニジノグリコシド,ポリアルギニンの細胞吸収

Nathan W Luedtke¹, Peter Carmichael, Yitzhak Tor

¹Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, California 92093-0358, USA.

Journal of the American Chemical Society

|October 9, 2003

まとめ

ネオミシンBとトブラミシンのようなアミノグリコシド薬は,細胞の吸収が悪い. アミンをグアニジングループに変換することで,細胞の吸収を大幅に高め,薬剤の投与可能性を向上させます.

科学分野:

バイオケミストリーバイオケミストリー
細胞生物学細胞生物学
薬物の配達薬物の配達

背景:

アミノグリコシド (ネオミシンB,トブラミシンなど) は,真核細胞の細胞吸収が限られていることを示している.
アミノグリコシドの化学的改変により,アミン群をグアニジン群に変換することで,細胞の浸透を高めることができます.

研究の目的:

BODIPYで標識されたアミノグリコシドとグアニジノグリコシドの細胞吸収を合成し,評価する.
これらの改変化合物の膜転位と細胞内局所化を比較するために.

主な方法:

BODIPYで結合されたアミノグリコシドとグアニジノグリコシドの合成.
定量的吸収分析のために,光活性化細胞分類 (FACS) を利用する.
光顕微鏡を用いて,細胞の局所化と膜の転位を定性的に評価する.

主要な成果:

トブラミシンとネオミシンBのグアニジニル化により,細胞吸収がそれぞれ10倍,20倍増加しました.
グアニジノネオミシンBは,光ポリアルギニンペプチドと比較して優れた細胞吸収を示した.
グアニジノネオミシンBはポリアルギニンペプチドの吸収を阻害し,共通の細胞吸収機構を示唆した.

結論:

グアニジニレーションは,アミノグリコシドの細胞吸収を大幅に高めるための有効な戦略です.
グアニジノグリコシドは,アルギニンに富んだ細胞に浸透するペプチドと同じような細胞吸収経路を利用する可能性があります.
これらの発見は,アミノグリコシドベースの改善された治療薬の開発に意味を持ち,提供特性が向上しています.

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