Development of Phenothiazine-Based Theranostic Compounds That Act Both as Inhibitors of β-Amyloid Aggregation and as Imaging Probes for Amyloid Plaques in Alzheimer’s Disease
作者:Pascal Dao、Feifei Ye、Yan Liu、Zhi Yun Du、Kun Zhang、Chang Zhi Dong、Bernard Meunier、Huixiong Chen
DOI:10.1021/acschemneuro.6b00380
日期:2017.4.19
and monitor diseases during the preclinical and early stages. In the present study, we report the design, synthesis, and evaluation of a series of new near-infrared fluorescent probes. Most of these probes displayed maximum emission in PBS (>650 nm), which falls in the good range for NIRF probes. Among them, 4a1 showed the highest affinity toward Aβ aggregates (Kd = 7.5 nM) and an excellent targeting
必须尽早发现阿尔茨海默氏病(AD),以帮助对该疾病进行了解和临床治疗,并防止其发展。专门针对大脑和视网膜中Aβ斑块的成像剂可能会导致AD的早期诊断。其中,近红外荧光(NIRF)成像已成为一种有吸引力的工具,可在临床前和早期阶段以无创方式识别和监测疾病。在本研究中,我们报告了一系列新型近红外荧光探针的设计,合成和评估。这些探针中的大多数在PBS(> 650 nm)中显示出最大发射,这对于NIRF探针来说是一个很好的范围。其中,4a1对Aβ聚集体的亲和力最高(K d= 7.5 nM),并且对双转基因小鼠的大脑和视网膜组织切片中的Aβ斑块具有出色的靶向能力。还发现这些化合物可有效防止Aβ原纤维形成并分解预先形成的Aβ原纤维,显示出作为诊断和治疗AD的治疗药物的潜力。