ペプチド結合体のパクリタキセル誘発超分子ポリメリゼーション

¹Department of Chemical and Biomolecular Engineering, and Institute for NanoBioTechnology , The Johns Hopkins University , 3400 North Charles Street , Baltimore , Maryland 21218 , United States.

Journal of the American Chemical Society

|June 29, 2019

まとめ

パクリタキセル (PTX) は,Spheropax (Spax) ペプチド結合物の上分子ポリメリゼーションを促進する. 自由 PTX は Spax モノマーを誘導して長糸状のアセンブリを形成し,イニシアター制御されたポリメリゼーションの洞察を提供します.

科学分野:

超分子化学
ポリマー科学
材料科学

背景:

超分子ポリメリゼーションは,非共性相互作用によるモノメアの自発的自己組み立てを含みます.
従来のポリメリゼーションには,しばしばプロセスを誘発または制御する外部イニシアターが必要です.

研究の目的:

パクリタキセル (PTX) を超分子ポリメリゼーションのプロモーターとして使用することを調査する.
ペプチド-パクリタキセル結合体,Spheropax (Spax) の自己組み立て行動を調査する.

主な方法:

水溶液中のSPAXモノメアの自己組み立てを研究した.
スパックスの組立にプロモーターとして自由PTXを加える効果を調査した.
異なったPTX/Spax比を用いてポリメリゼーションの形態と運動を分析した.

主要な成果:

スパックスモノマーは単独で球状のミセル (約. 6.5 nm) となっている.
PTXの存在下では,スパックスはポリメリゼーションを経てフィラメント状の集合体 (ミクロメートルの長さ) を形成します.
PTX/Spax比を上げると,方向性ポリメリゼーションが強化され,プロセスが加速されます.

結論:

パクリタキセルは,Spaxの超分子ポリメリゼーションの有効なプロモーターとして作用します.
発見は,イニシアター制御の超分子ポリメリゼーションメカニズムに関する洞察を提供します.

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