用于活体和细胞内SO2衍生物检测的线粒体靶向双光子磷光铱(Ⅲ)配合物
Mitochondria-Targeted Iridium(Ⅲ) Complex Used as a Two-Photon Phosphorescent Probe for SO2 Derivatives Detection in Vitro and in Vivo
作者单位E-mail
赵子建 中山大学化学学院, 生物无机与合成化学教育部重点实验室, 广州 510275  
侯明萱 中山大学化学学院, 生物无机与合成化学教育部重点实验室, 广州 510275  
王康男 中山大学化学学院, 生物无机与合成化学教育部重点实验室, 广州 510275 wangkn3@mail2.sysu.edu.cn 
刘柳宜 中山大学化学学院, 生物无机与合成化学教育部重点实验室, 广州 510275  
毛宗万 中山大学化学学院, 生物无机与合成化学教育部重点实验室, 广州 510275 cesmzw@mail.sysu.eddu.cn 
摘要: 暴露于高剂量的二氧化硫(SO2)及其衍生物(SO32-和HSO3-)会导致血管疾病甚至肺癌发生。双光子磷光成像显微术(TPPIM)和双光子磷光寿命成像显微术(TPPLIM)具有良好的时空分辨能力、抗光漂白、抗自体荧光以及较强组织穿透性等优点,可以实现SO2衍生物在生物样品中实时检测。得益于铱配合物的长磷光寿命(~110 ns)和线粒体靶向特性,本文报道了首例基于TPPLIM技术的SO2衍生物检测探针Ir-EAIr-EA对水溶液中的亚硫酸氢盐表现出高特异性和灵敏性的识别能力(69倍磷光增强,10倍亚硫酸氢盐)和较低的检测限(65 nmol·L-1)。更为重要的是,Ir-EA对活细胞和斑马鱼的线粒体中SO2衍生物表现出良好的成像效果。
关键词: 二氧化硫衍生物  双光子磷光寿命成像  铱配合物  线粒体靶向  斑马鱼
基金项目: 国家自然科学基金(No.21837006),教育部创新团队(IRT-17R111),中央高校基本科研业务费专项资金,中国博士后科学基金(No.2019M662968),广东省基础与应用基础研究基金联合基金(No.2019A1515110356)和广东省大学生科技创新培育专项资金(No.pdjha0005)资助项目。
Abstract: Exposure to high doses of sulfur dioxide (SO2) derivatives (SO32-and HSO3-) are associated with many cardiovascular diseases and lung cancer. Benefiting from the advantages of two-photon phosphorescence imaging microscopy (TPPIM) even two-photon phosphorescence lifetime imaging microscopy (TPPLIM), including excellent spatial and temporal resolutions, anti-photobleaching, anti-autofluorescence, and strong penetration, could be promising features for real-time detection of biological bisulfite derivatives in living tissues. Herein, we firstly report the probe (named as Ir-EA) for SO2 derivatives based on TPPLIM technology. Ir-EA was developed with an iridium complex according to its long phosphorescence lifetime (~110 ns) and the mitochondrial targeting properties. More importantly, Ir-EA displayed a significant luminescence enhancement (69-fold, 10 eq.) and a low detection limit (65 nmol·L-1) for bisulfite in an aqueous solution. Additionally, Ir-EA can selectively lighting-up mitochondria bisulfite derivatives in living cells as well as zebrafish.
Keywords: biological bisulfite  two-photon phosphorescence lifetime imaging microscopy  iridium(Ⅲ) complex  mitochondria-targeted  zebrafish
投稿时间:2020-02-05 修订日期:2020-03-23
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赵子建,侯明萱,王康男,刘柳宜,毛宗万.用于活体和细胞内SO2衍生物检测的线粒体靶向双光子磷光铱(Ⅲ)配合物[J].无机化学学报,2020,36(6):1113-1122.
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