Enzymatic Assays Using Umbelliferone Substrates with Cyclodextrins in Droplets of Oil
申请人:Winger Theodore
公开号:US20110118132A1
公开(公告)日:2011-05-19
The invention is directed to droplet actuator devices and assay methods. The method may include, among other things, a method of conducting enzymatic assays using umbelliferone substrates with cyclodextrins in droplets in oil, the method including incubating a droplet in oil, the droplet preferably comprising an umbelliferone substrate, a sample, and a cyclodextrin compound. The methods may further include a method of substantially eliminating cross-contamination between droplets in enzymatic containing substrate-based bioassays. The method may include immobilization of the enzymatic substrate including forming an inclusion complex with the substrate for stabilizing the substrate within an aqueous environment, wherein the inclusion complex may be formed using cyclodextrins. In yet another embodiment, the invention may provide a method of enhancing hydrolysis of enzymatic substrates. The methods may further include a method of forming an inclusion complex with the substrate for stabilizing the substrate within an aqueous environment, wherein the substrate may be a 4-MU- or HMU containing substrate. The inclusion complex may be formed using cyclodextrin.
本发明涉及液滴操纵器件和测定方法。该方法可能包括使用环糊精在油滴中使用香豆素底物进行酶促反应的方法,该方法包括在油中孵育油滴,油滴优选包括香豆素底物,样品和环糊精化合物。该方法还可以包括在基于底物的生物测定中实现减少液滴间交叉污染的方法。该方法可能包括固定酶促底物,包括与底物形成包含复合物以稳定底物在水环境中,其中可以使用环糊精形成包含复合物。在另一种实施方式中,本发明可能提供一种增强酶促底物水解的方法。该方法还可以包括与底物形成包含复合物以稳定底物在水环境中,其中底物可以是含4-MU或HMU的底物。包含复合物可以使用环糊精形成。