8-Bromo-7-hydroxyquinoline as a Photoremovable Protecting Group for Physiological Use: Mechanism and Scope
作者:Yue Zhu、Christopher M. Pavlos、John P. Toscano、Timothy M. Dore
DOI:10.1021/ja0555320
日期:2006.4.5
photoremovable protecting groups with sufficient sensitivity to 2PE for use in "caged" compounds. 8-Bromo-7-hydroxyquinoline (BHQ) is efficiently photolyzed by classic 1PE (365 nm) and 2PE (740 nm) under simulated physiological conditions (aqueous buffer of high ionic strength, pH 7.2) to release carboxylates, phosphates, and diols-functional groups commonly found on bioactive molecules such as neurotransmitters
New quinoline-based caging groups synthesized for photo-regulation of aptamer activity
作者:Yi Ming Li、Jing Shi、Rong Cai、XiaoYun Chen、Zhao Feng Luo、Qing Xiang Guo
DOI:10.1016/j.jphotochem.2010.02.009
日期:2010.4
A series of quinoline-based photo-removable protecting groups for photo-regulation of thrombin aptamer (HD1) activity were synthesized with improved caging and uncaging efficiency. Among them, 8-bromo-2-diazomethyl-7-hydroxyquinolinyl (BHQ-diazo, 1) chromophore was found to cage the HD1 with highest caging and restoration efficiency. Moreover, on the basis of the RP-HPLC and SPR analysis, BHQ was demonstrated to regulate HD1s specific affinity to target molecule with 3-fold photolysis sensitivity and about 40% percent higher uncaging efficiency than Bhc (6-bromo-7-hydroxycoumarin-4-ylmethyl) group. It was proposed that the development and use of quinoline derivative may provide a general strategy to photo-regulate oligonucleotide's activity with improved caging and uncaging efficiencies by the convenient non-site-specific caging method. (C) 2010 Elsevier B.V. All rights reserved.
Photoregulation of protein plasmid expression in vitro and in vivo using BHQ caging group
作者:Zhi Ping Zhang、Yi Ming Li、Xiao Yun Chen、Qing Xiang Guo
DOI:10.1016/j.cclet.2010.10.007
日期:2011.3
Green fluorescent protein (GFP) plasmid was caged by 8-bromo-7-hydroxyquinolinyl chromophore (BHQ) for controlling its expression with exact spatiotemporal resolution. In vitro and in vivo experiments clearly verified that, comparing with Bhc caging, the expression level of caged GFP plasmid was dramatically decreased and then efficiently restored after subsequent photolysis. (C) 2010 Yi Ming Li. Published by Elsevier B.V. on behalf of Chinese Chemical Society. All rights reserved.