申请人:GE Healthcare Limited
公开号:EP2360211A1
公开(公告)日:2011-08-24
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 solubilising 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.
所公开的氰基染料可用于标记和检测生物材料和其他材料。这些染料为式 (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 独立地代表完成一个环或两个融合环芳香系统所需的碳原子;基团 R1、R2、R3、R4、R5、R6 和 R7 中至少有一个是基团-E-F,其中 E 是单键或间隔基,F 是目标键基;基团 R11、R12、R13 和 R14 中的一个或多个独立地选自基团-(CH2)k-W,其中 W 是磺酸或膦酸,k 是 1 到 10 的整数。这些染料可用于荧光标记应用,其中,连接到吲哚啉鎓环 3 位上的一个、最好是多个水溶性基团的存在可减少染料-染料相互作用,从而减少染料-染料淬灭,特别是在多个染料分子连接到核酸、寡核苷酸、蛋白质和抗体等成分上时。