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公开(公告)号:US5661035A
公开(公告)日:1997-08-26
申请号:US481977
申请日:1995-06-07
IPC分类号: G01N21/78 , C07D209/08 , C07D213/74 , C07D215/22 , C07D215/48 , C07D215/50 , C07D215/54 , C07D239/60 , C07D239/62 , C07D239/66 , C07D311/08 , C07D311/16 , C07D335/06 , C07F5/00 , C07F5/02 , C07F9/10 , C07F9/572 , C09B23/02 , C09K11/06 , G01N21/76 , G01N33/50 , G01N33/52 , G01N33/542 , G01N33/58 , G01N33/68 , G01N21/64
CPC分类号: G01N33/582 , C07D209/08 , C07D239/60 , C07D239/62 , C07D239/66 , C07D311/16 , C07F5/003 , C07F5/02 , C07F5/027 , C07F9/10 , C07F9/5728 , C09B23/02 , G01N33/5005 , G01N33/5008 , G01N33/502 , G01N33/5041 , G01N33/5044 , G01N33/5047 , G01N33/5058 , G01N33/5061 , G01N33/5076 , G01N33/52 , G01N33/542 , G01N33/6872 , G01N2500/10 , Y02P20/55 , Y10S436/805
摘要: Compositions and methods for use in generating fast ratiometric voltage-sensitive fluorescence changes in single or multiple cells systems. A first reagent is a membrane-bound hydrophobic fluorescent anion which rapidly redistributes from one face of the plasma membrane to the other in response to the transmembrane potential, as described by the Nernst equation. A voltage-sensitive fluorescent readout is created by labeling the intracellular or extracellular surface of the cell with a second reagent comprising a fluorophore which can undergo energy transfer with the first reagent or a quencher for the first reagent. Quenching or FRET between the two reagents is disrupted when the membrane potential is depolarized, because the anionic first reagent is pulled to the intracellular surface of the plasma membrane far from the asymmetrically bound second reagent. In preferred embodiments of the invention, the first and second reagents are bound together by a suitable linker group.
摘要翻译: 用于在单个或多个细胞系统中产生快速比例电压敏感荧光变化的组合物和方法。 第一种试剂是一种膜结合的疏水性荧光阴离子,由Nernst方程描述,它可以响应跨膜电位从质膜的一面快速重新分布到另一面。 通过用包含荧光团的第二试剂标记细胞内或细胞外表面来产生电压敏感荧光读数,所述荧光团可以与第一试剂或第一试剂的猝灭剂进行能量转移。 当膜电位被去极化时,两种试剂之间的猝灭或FRET被破坏,因为阴离子第一试剂被拉到远离不对称结合的第二试剂的质膜的细胞内表面。 在本发明的优选实施方案中,第一和第二试剂通过合适的连接基团结合在一起。