Red‐Shifted Fluorogenic Substrate for Detection of
<i>lac</i>
Z‐Positive Cells in Living Tissue with Single‐Cell Resolution
作者:Hiroki Ito、Yu Kawamata、Mako Kamiya、Kayoko Tsuda‐Sakurai、Shinji Tanaka、Tasuku Ueno、Toru Komatsu、Kenjiro Hanaoka、Shigeo Okabe、Masayuki Miura、Yasuteru Urano
DOI:10.1002/anie.201808670
日期:2018.11.26
describe the development of a red‐shifted fluorogenic substrate for β‐galactosidase, SPiDER‐Red‐βGal, based on a silicon rhodol scaffold and a carboxylic group as the intramolecular nucleophile. LacZ‐positive cells were successfully labeled with SPiDER‐Red‐βGal at single‐cell resolution in living samples, which enabled us to visualize different cell types in combination with GFP markers.
的大肠杆菌的lac编码Ž基因β半乳糖苷酶是一种广泛使用的报告,但很少合成底物可用于与活样品中的单细胞分辨率检测其活性。我们最近报道的荧光底物SPiDER-βGal适合于此目的,但其水解产物显示绿色荧光发射,因此需要与绿色荧光蛋白(GFP)标记结合使用的红移类似物。在本文中,我们描述了一种基于β-半乳糖苷酶的红移荧光底物SPiDER-Red-βGal的开发,该底物基于硅rhodol支架和一个作为分子内亲核试剂的羧基。紫胶Z阳性细胞已成功在活体样品中以单细胞分辨率用SPiDER-Red-βGal标记,这使我们能够结合GFP标记物观察不同的细胞类型。