クロマトグラフィックシリカの内部表面に積もられたサポートされたリン酸塩基の特徴づけ
David A Bryce1, Jay P Kitt1, Joel M Harris1
1Department of Chemistry , University of Utah , 315 South 1400 East , Salt Lake City , Utah 84112-0850 , United States.
Journal of the American Chemical Society
|February 28, 2018
まとめ
研究者らは,小胞融合を用いて,多孔性のシリカ粒子の上にサポートされた脂質二層を作り出すための新しい方法を開発した. この高表面積のアプローチは,モデル膜の詳細な調査とバイオセンシングアプリケーションを可能にします.
科学分野:
- バイオ物理学
- 材料科学
- 分析化学
背景:
- 平面的支柱の脂質二重層のモデルは,膜構造とダイナミクスを研究するために不可欠である.
- 平面で支えられている脂質二層は細胞膜を模倣し,バイオセンシングに有用である.
- 現在の方法は,表面積が小さいため,高い感度で検出する必要があります.
研究 の 目的:
- 毛細なシリカ粒子に脂質二層を積むための水泡融合を実証する.
- コンフォカル・ラマン顕微鏡を用いて,これらのサポートされた脂質二層の構造を調査する.
- 大面積のバイオセンシングアプリケーションの可能性を評価する.
主な方法:
- 1,2-ジミリストイル-スン-グリセロ-3-フォスホリン (DMPC) がクロマトグラフィのシリカ粒子に溶解する.
- コンフォカル・ラーマン顕微鏡で膜の厚さ,ヘッドグループ間隔,分子組織を分析する.
- コンカナヴァリンAとマノース標的を用いたラベルフリータンパク質バイオセンシングの実証
主要な成果:
- 毛細なシリカ粒子の内部表面に単一のDMPC二重層を成功裏に堆積させる.
- ラマンスペクトルは,DMPCの膀膜に匹敵する二層構造と組織を確認した.
- コンカナヴァリンAが脂質固定マノース標的に結合し,生物感知能力を示した.
結論:
- 毛細なシリカで支えられた脂質二層は,膜研究のための平面的支柱の代替として,高表面積を提供する.
- このプラットフォームは 繊細でラベルのない バイオセンシングアプリケーションを可能にします
- この方法は,堅固なモデル膜システムを作成するための多用途なアプローチを提供します.
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