Development of a Hypoxia-Selective Near-Infrared Fluorescent Probe for Non-invasive Tumor Imaging
作者:Bahaa Gamal Mohamed Youssif、Kensuke Okuda、Tetsuya Kadonosono、Ola Ibrahim Abdel Razek Salem、Alaa Arafat Mohamed Hayallah、Mostafa Ahmed Hussein、Shinae Kizaka-Kondoh、Hideko Nagasawa
DOI:10.1248/cpb.60.402
日期:——
A near-infrared fluorochrome, GPU-311, was designed, synthesized and evaluated for its application in non-invasive imaging of tumor hypoxia. Efficient synthesis was achieved by nucleophilic substitution and click chemistry ring using the bifunctional tetraethylene glycol linker 2 containing thiol and azide groups for the conjugation of the propargylated nitroimidazole 1 and the heptamethine cyanine
设计,合成和评估了近红外荧光染料GPU-311在肿瘤缺氧的非侵入性成像中的应用。通过使用含有硫醇和叠氮基团的双功能四乙二醇接头2进行亲核取代和点击化学环,可实现高效合成,以使炔丙基化的硝基咪唑1和带有2-氯-1-环己烯基环的七甲基花青染料3缀合。GPU-311表现出长激发和发射波长(Ex / Em = 785/802 nm)和适度的量子产率(0.05)。GPU-311的水溶性和亲水性增加。用GPU-311体外处理SUIT-2 / HRE-Luc胰腺癌细胞后,在缺氧条件下选择性观察到的荧光水平高于在常氧条件下。然而,