シアニン染料のフォスフィン滅は,光顕微鏡の多用途なツールとして用いられる
Joshua C Vaughan1, Graham T Dempsey, Eileen Sun
1Howard Hughes Medical Institute, and Department of Chemistry and Chemical Biology, Harvard University, Cambridge, Massachusetts 02138, USA.
Journal of the American Chemical Society
|January 15, 2013
まとめ
Cy5のような特定のサイアニン染料は,トリソル-2-カルボキシエチル) フォスフィン (TCEP) によって可逆的に消火させることができます. このフォスフィン相互作用は,超高解像度画像と細胞分子分化におけるアプリケーションを可能にします.
科学分野:
- 化学生物学 化学生物学とは
- 生物物理化学 生物物理化学
- 分子イメージングは分子イメージングです.
背景:
- シアニン染料は光探査機で広く使用されています.
- リバーシブル・チューニング・メカニズムは,高度なイメージング技術にとって貴重なものです.
研究 の 目的:
- サイアニン染料Cy5のトリソキソキソキソキソキソキソキソキソキソキソキソキソキソキソキソキソキソキソキソキソキソキソキソキソキソキソキソキソキソキソキソキソキソキソキソキソキソキソキソキソキソキソキソキソキソキソキソキソキソキソキソキソキソ (TCEP) によるシアニン染料Cy5の消火を調査する.
- TCEP媒介による冷却のメカニズムとその潜在的な応用を探求する.
主な方法:
- Cy5-TCEPの相互作用のスペクトル解析.
- 紫外線光に誘発されたアダクト解離を含む光化学研究.
- 超高解像度画像でTCEP消火の実証.
- 細胞内および細胞外分子の分化における応用.
主要な成果:
- TCEPは,Cy5および関連するシアニン染料の光を反転的に消し去ります.
- 消火は,染料のポリメチンのブリッジにTCEPを1,4添加することで発生し,共振付添加物を形成します.
- 紫外線照明によって,アダクトが解離され,光が回復します.
- TCEP quenchingにより,超高解像度画像と細胞局所化研究が可能です.
結論:
- TCEPは,Cy5.のようなサイアニン染料のための効果的な可逆的消火剤です.
- このメカニズムは,可逆の共振性アダクト形成を伴う.
- この可逆的な冷却は,高度な光学画像と生物学的測定のための新しい機会を提供します.
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