Abstract
以4-(4-羟基苯乙烯基)-1-甲基吡啶盐(MCY)为荧光团、4-硝基苯并恶二唑(NBD)为硫醇的反应基团,合成荧光探针(MCY-NBD),用于高灵敏、选择性检测细胞中的生物硫醇。探针与硫醇反应后,呈现显著的绿色荧光增强,荧光增强程度与硫醇浓度在0.1~4.0μmol/L范围内呈良好的线性关系,检出限为0.03μmol/L;此探针具有反应速度快、选择性高、光学稳定性好等优点。激光共聚焦扫描显微成像结果表明,MCY-NBD具有优良的生物相容性、细胞膜通透性及低毒性,可用于快速检测细胞内生物硫醇的浓度。
A highly sensitive biothiols-selective fluorescent probe(MCY-NBD) was developed based on the merocyanine fluorophore of 4-(4-hydroxy styryl)-1-methyl pyridine iodide (MCY) and nitro benzo furazan(NBD) as the biothiols-specific recognition group. Upon reacting with biothiols, the probe showed a strong fluorescence enhancement more than 8-fold and very fast response. Moreover, the fluorescence intensity change of MCY-NBD at 526 nm was found to be linearly proportional to biothiols concentrations in the range of 0.1-4.0 μmol/L with a detection limit of 0.03 μmol/L, indicating that MCY-NBD was highly sensitive to biothiols. Confocal laser scanning microscopic imaging experiment proved that MCY-NBD had excellent biocompatibility and cell membrane permeability with low cytotoxicity, which was desirable for fast detection and visualization of both endogenous and exogenous biothiols in live cells.
A highly sensitive biothiols-selective fluorescent probe(MCY-NBD) was developed based on the merocyanine fluorophore of 4-(4-hydroxy styryl)-1-methyl pyridine iodide (MCY) and nitro benzo furazan(NBD) as the biothiols-specific recognition group. Upon reacting with biothiols, the probe showed a strong fluorescence enhancement more than 8-fold and very fast response. Moreover, the fluorescence intensity change of MCY-NBD at 526 nm was found to be linearly proportional to biothiols concentrations in the range of 0.1-4.0 μmol/L with a detection limit of 0.03 μmol/L, indicating that MCY-NBD was highly sensitive to biothiols. Confocal laser scanning microscopic imaging experiment proved that MCY-NBD had excellent biocompatibility and cell membrane permeability with low cytotoxicity, which was desirable for fast detection and visualization of both endogenous and exogenous biothiols in live cells.
Translated title of the contribution | Synthesis and Properties of Fluorescent Probe for Detection of Biothiols in Live Cells |
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Original language | Chinese (Simplified) |
Pages (from-to) | 1767-1777 |
Number of pages | 11 |
Journal | 分析化学 |
Volume | 47 |
Issue number | 11 |
DOIs | |
Publication status | Published - Nov 2019 |
User-Defined Keywords
- 生物硫醇
- 荧光探针
- 细胞成像
- Biothiols
- Cells imaging
- Fluorescent probe