申请人:ECOLE POLYTECHNIQUE FEDERALE DE LAUSANNE (EPFL)
公开号:US20160230011A1
公开(公告)日:2016-08-11
The invention pertains to a near-infrared fluorescent dye that is cell permeable and can be attached to selected proteins in living cells. The dye has the general formula
or its corresponding spiro ac one
wherein
Y is chosen from the group consisting of Si, Ge and Sn;
R
0
is —COO
−
or COOH;
R
1
, R
2
, R
3
, R
4
, R
5
, R
6
, R
7
, R
8
, R
9
, R
10
, R
11
, R
12
, R
13
, R
15
and R
16
are substituents, including hydrogen, independently from each other.
The dye (i) absorbs and emits light at wavelengths above 600 nm; (ii) possesses high photostability; (iii) has high extinction coefficients and high quantum yields; (iv) can be derivatized with different molecules; and (v) is membrane-permeable and shows minimal background binding to biomolecules and biomolecular structures.
本发明涉及一种近红外荧光染料,它具有细胞渗透性,并可以连接到活细胞中选择的蛋白质上。该染料具有下列通式或其相应的螺环化合物:其中Y选择自Si、Ge和Sn组成的群;R0为—COO−或COOH;R1、R2、R3、R4、R5、R6、R7、R8、R9、R10、R11、R12、R13、R15和R16为取代基,包括氢,彼此独立。该染料(i)吸收和发射波长在600nm以上的光;(ii)具有高光稳定性;(iii)具有高消光系数和高量子产率;(iv)可以与不同分子衍生化;(v)具有膜渗透性并显示对生物分子和生物分子结构的最小背景结合。