线粒体靶向的罗丹明衍生物用于肿瘤荧光成像

doi:10.11949/0438-1157.20231417

摘要/Abstract

摘要：

设计合成了两例以罗丹明为母体的荧光染料RDMID-C和RDMID-N。实验结果表明，上述染料分子具有较低的细胞毒性，良好的生物相容性及靶向细胞线粒体的能力。两例荧光染料在细胞器定位实验中与商业化线粒体染料的共定位系数较高，并在小鼠肿瘤中有较长的滞留时间，可以用于肿瘤荧光成像。

关键词: 染料, 荧光成像, 生物医学工程, 生物工程, 生物技术

Abstract:

Two examples of fluorescent dyes RDMID-C and RDMID-N using rhodamine as the parent were designed and synthesized. The results showed that the dyes exhibited low cytotoxicity, good biocompatibility, and the ability to target mitochondria. The fluorescence dyes showed higher co-localization coefficient with commercial mitochondrial dyes in co-localization experiments, and had longer retention time in tumors, which could be used for tumor fluorescence imaging.

Key words: dyestuffs, fluorescence image, biomedical engineering, biological engineering, biotechnology

中图分类号:

TQ 617.3

王书鹏, 杜健军, 姚瑶, 樊江莉, 彭孝军. 线粒体靶向的罗丹明衍生物用于肿瘤荧光成像[J]. 化工学报, 2024, 75(4): 1679-1686.

Shupeng WANG, Jianjun DU, Yao YAO, Jiangli FAN, Xiaojun PENG. Mitochondria-targeted rhodamine photosensitizers for tumor fluorescence imaging[J]. CIESC Journal, 2024, 75(4): 1679-1686.

图/表 10

图1 中间体R-1的合成路线

Fig.1 Synthetic route of R-1

图2 RDMID-C的合成路线

Fig.2 Synthetic route of RDMID-C

图3 RDMID-N的合成路线

Fig.3 Synthetic route of RDMID-N

图4 RDMID-N和RDMID-C在不同溶剂中的吸收和发射光谱

Fig.4 Absorption and fluorescence spectra of RDMID-N and RDMID-C in different solvents

表1 Rhb、RDMID-C和RDMID-N的光物理参数

Table 1 Photophysical parameters of Rh123， RDMID-C and RDMID-N

染料	λ_max/nm	λ'_max/nm	ε/(10⁵ L/(mol·cm))	Φ_f/%
Rhb	546	568	0.92	69.4
RDMID-C	608	650	0.15	25.2
RDMID-N	636	682	0.81	36.4

图5 RDMID-C和RDMID-N的荧光强度随溶液黏度(水/甘油体系)的变化

Fig.5 Variation of fluorescence emission spectra of RDMID-C and RDMID-N with the change of solution viscosity(water/glycerol system)

图6 共聚焦监测的RDMID-N的细胞摄取实验

Fig.6 Cellular uptake of RDMID-N monitored by confocal imaging

图7 4T1细胞和RDMID-C、RDMID-N共孵育24 h后细胞活性

Fig.7 Viabilities of 4T1 cells incubated with RDMID-C and RDMID-N for 24 h

图8 Mito Tracker Green FM、Lyso Tracker Green DND-26和Rhb、RDMID-C、RDMID-N在MCF-7细胞中的共定位实验 (λex=490 nm, λem=523 nm)

Fig.8 Co-localization of Rhb, RDMID-C, RDMID-N and Mito Tracker Green FM，Lyso Tracker Green DND-26 in MCF-7 cells (λex=490 nm, λem=523 nm)

图9 体内荧光成像和注射RDMID-N 4 h后主要器官荧光成像

Fig. 9 In vivo fluorescence images and fluorescence intensities of main organs after injection of RDMID-N for about 4 h

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