申请人:GE Healthcare UK Limited
公开号:US08148539B2
公开(公告)日:2012-04-03
Disclosed are cyanine dyes that are useful for labelling and detecting biological and other materials. The dyes are of formula (I):
in which groups R3 and R4 are attached to the Z1 ring structure and groups R5 and R6 are attached to the Z2 ring structure, and n=1, 2 or 3; Z1 and Z2 independently represent the carbon atoms necessary to complete a one ring, or two-fused ring aromatic system; at least one of groups R1, R2, R3, R4, R5, R6 and R7 is the group -E-F where E is a single bond or a spacer group and F is a target bonding group; one or more of groups R11, R12, R13 and R14 are independently selected from the group —(CH2)k—W, where W is sulphonic acid or phosphonic acid and k is an integer from 1 to 10. The dyes may be used in fluorescence labelling applications, where the presence of one and preferably multiple water solubilizing groups attached to the 3-position of the indolinium ring reduces dye-dye interactions, and hence dye-dye quenching, particularly where multiple dye molecules are attached to components such as nucleic acids, oligonucleotides, proteins and antibodies.
本发明涉及一种靛烯染料,可用于标记和检测生物和其他材料。该染料的化学式为(I),其中基团R3和R4连接到Z1环结构上,基团R5和R6连接到Z2环结构上,n=1、2或3;Z1和Z2独立地表示完成一个环或两个融合环芳族系统所需的碳原子;基团R1、R2、R3、R4、R5、R6和R7中至少有一个是基团-E-F,其中E是单键或空间群,F是目标结合基团;其中一个或多个基团R11、R12、R13和R14独立地选自组-(CH2)k-W,其中W为磺酸或膦酸,k为1到10的整数。该染料可用于荧光标记应用中,其中连接到靛烯环的3位的一个或多个水溶性基团可减少染料-染料相互作用,从而减少染料猝灭,特别是在多个染料分子连接到核酸、寡核苷酸、蛋白质和抗体等组分的情况下。