METHODS FOR THE IDENTIFICATION OF ZAP-70 INTERACTING MOLECULES AND FOR THE PURIFICATION OF ZAP-70
申请人:Kruse Ulrich
公开号:US20120178180A1
公开(公告)日:2012-07-12
The invention provides in a first aspect a method for the identification of an ZAP-70 interacting compound, comprising the steps of a) providing a protein preparation containing phosphorylated ZAP-70, b) contacting the protein preparation with aminopyrido-pyrimidine ligand 24 immobilized on a solid support under conditions allowing the formation of an aminopyrido-pyrimidine ligand 24—phosphorylated ZAP-70 complex, c) incubating the aminopyrido-pyrimidine ligand 24—phosphorylated ZAP-70 complex with a given compound, and d) determining whether the compound is able to separate phosphorylated ZAP-70 from the immobilized aminopyrido-pyrimidine ligand 24. In a second aspect, the present invention relates to A method for the identification of an ZAP-70 interacting compound, comprising the steps of a) providing a protein preparation containing phosphorylated ZAP-70, b) contacting the protein preparation with ligand aminopyrido-pyrimidine ligand 24 immobilized on a solid support and with a given compound under conditions allowing the formation of an aminopyrido-pyrimidine ligand 24—phosphorylated ZAP-70 complex, and c) detecting the aminopyrido-pyrimidine ligand 24—phosphorylated ZAP-70 complex formed in step b). In a third aspect, the invention provides a method for the identification of an ZAP-70 interacting compound, comprising the steps of: a) providing two aliquots of a protein preparation containing phosphorylated ZAP-70, b) contacting one aliquot with aminopyrido-pyrimidine ligand 24 immobilized on a solid support under conditions allowing the formation of an aminopyrido-pyrimidine ligand 24—phosphorylated ZAP-70 complex, c) contacting the other aliquot with aminopyrido-pyrimidine ligand 24 immobilized on a solid support and with a given compound under conditions allowing the formation of an aminopyrido-pyrimidine ligand 24—phosphorylated ZAP-70 complex, and d) determining the amount of aminopyrido-pyrimidine ligand 24—phosphorylated ZAP-70 complex formed in steps b) and c). In a forth aspect, the invention relates to a method for the identification of an ZAP-70 interacting compound, comprising the steps of: a) providing two aliquots comprising each at least one cell containing phosphorylated ZAP-70, b) incubating one aliquot with a given compound, c) harvesting the cells of each aliquot, d) lysing the cells in order to obtain protein preparations, e) contacting the protein preparations with aminopyrido-pyrimidine ligand 24 immobilized on a solid support under conditions allowing the formation of an aminopyrido-pyrimidine ligand 24—phosphorylated ZAP-70 complex, and f) determining the amount of aminopyrido-pyrimidine ligand 24—phosphorylated ZAP-70 complex formed in each aliquot in step e).
该发明提供了一种识别与ZAP-70相互作用的化合物的方法。第一方面的方法包括以下步骤:a)提供含有磷酸化ZAP-70的蛋白质制备物,b)将蛋白质制备物与固定在固体支持上的氨基吡啶-嘧啶配体24接触,在条件下允许形成氨基吡啶-嘧啶配体24-磷酸化ZAP-70复合物,c)将氨基吡啶-嘧啶配体24-磷酸化ZAP-70复合物与给定化合物孵育,d)确定化合物是否能够将磷酸化ZAP-70与固定的氨基吡啶-嘧啶配体24分离。第二方面的方法包括以下步骤:a)提供含有磷酸化ZAP-70的蛋白质制备物,b)在固体支持上固定氨基吡啶-嘧啶配体24和给定化合物的条件下,与蛋白质制备物接触,在条件下允许形成氨基吡啶-嘧啶配体24-磷酸化ZAP-70复合物,c)检测在步骤b中形成的氨基吡啶-嘧啶配体24-磷酸化ZAP-70复合物。第三方面的方法包括以下步骤:a)提供两个含有磷酸化ZAP-70的蛋白质制备物的小份,b)将一个小份与固定在固体支持上的氨基吡啶-嘧啶配体24接触,在条件下允许形成氨基吡啶-嘧啶配体24-磷酸化ZAP-70复合物,c)将另一个小份与固定在固体支持上的氨基吡啶-嘧啶配体24和给定化合物的条件下接触,在条件下允许形成氨基吡啶-嘧啶配体24-磷酸化ZAP-70复合物,d)确定在步骤b和c中形成的氨基吡啶-嘧啶配体24-磷酸化ZAP-70复合物的数量。第四方面的方法包括以下步骤:a)提供两个至少含有一个磷酸化ZAP-70的细胞的小份,b)将一个小份与给定化合物孵育,c)收获每个小份的细胞,d)裂解细胞以获得蛋白质制备物,e)将蛋白质制备物与固定在固体支持上的氨基吡啶-嘧啶配体24接触,在条件下允许形成氨基吡啶-嘧啶配体24-磷酸化ZAP-70复合物,f)确定在步骤e中形成的氨基吡啶-嘧啶配体24-磷酸化ZAP-70复合物的数量。