申请人:GE Healthcare UK Limited
公开号:EP2270106A2
公开(公告)日:2011-01-05
Disclosed are cyanine dyes that are useful for labelling and detecting biological and other materials. The dyes are of formula (I):
in which at least one of groups R1, R2, R3, R4, R5, R6, R7, R8, R9, R10 R11, R12, R13 and R14 is -L-M or -L-P, where L is a linking group, M is a target bonding group and P is a conjugated component, and at least one of groups R3, R4, R5, R6, R7, R8, R9 and R10 comprises fluorine. The use of cyanine dyes substituted by fluorine and having additional substitution with three or more sulphonic acid groups for labelling biological target molecules results in a labelled product in which there is reduced dye-dye aggregation and improved photostability, compared with cyanine dyes having no such substitutions. The dyes of the present invention are particularly useful in assays involving fluorescence detection where continual or repeated excitation is a requirement, for example in kinetic studies, or in microarray analyses where microarray slides may need to be reanalysed over a period of days.
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 R1、R2、R3、R4、R5、R6、R7、R8、R9、R10 R11、R12、R13 和 R14 中至少有一个是-L-M 或-L-P,其中 L 是连接基团,M 是目标键合基团,P 是共轭组分,基团 R3、R4、R5、R6、R7、R8、R9 和 R10 中至少有一个包含氟。使用被氟取代并另外被三个或更多磺酸基团取代的氰基染料标记生物目标分子,与没有此类取代的氰基染料相比,标记产品中的染料聚集减少,光稳定性提高。本发明的染料在需要持续或重复激发的荧光检测中特别有用,例如在动力学研究中,或在微阵列分析中,微阵列切片可能需要在几天内重新分析。