申请人:HitGen LTD.
公开号:US20160154013A1
公开(公告)日:2016-06-02
The present invention discloses a method for capturing drug targets, comprising the following steps of: (1) preparing row materials, i.e., compounds and DNA or RNA or one party of other specific affinity materials; (2) linking: covalently linking the compounds to the DNA or RNA or the one party of other specific affinity materials, to obtain labeled compounds; (3) transferring: transferring the labeled compounds obtained in the step (2) into cells by a specific gene transfer method; (4) capturing targets: disrupting the cells in the step (3), and then capturing the DNA or RNA in the step (1) by immobilized complementary DNA or RNA, or capturing the one party of affinity materials in the step (1) by the other party of immobilized specific affinity materials, thus to enrich the targets through the covalently linked labeled compounds and the affinity of the targets; (5) identifying targets: dissociating the enriched targets from a stationary phase, deploying the targets by a gel electrophoresis method or by an equivalent separation method, and comparing differential proteins by proteomics thus to identify the potential targets; and (6) determining targets: expressing or purchasing the targets identified in the step (5) by priority, and comparing by interaction of the compounds with those targets one by one to determine the targets for the compounds. By the method of the present invention, compounds with low membrane permeability may be transferred into cells to be bound with the targets in the cells, to realize the target identification closer to the real physiological environment and thus provide more conclusive evidences for the acting mechanism of the compounds to diseases. Additionally, the method for capturing drug targets of the present invention is novel, easy, efficient, and low in cost, and has good application prospects.
本发明公开了一种药物靶点捕获方法,包括以下步骤:(1)准备原料,即化合物和DNA或RNA或其他特定亲和材料之一;(2)连接:将化合物与DNA或RNA或其他特定亲和材料之一共价连接,获得标记化合物;(3)转移:通过特定的基因转移方法将步骤(2)中获得的标记化合物转移到细胞中;(4)捕获靶点:破坏步骤(3)中的细胞,然后通过固定的互补DNA或RNA捕获步骤(1)中的DNA或RNA,或通过固定的其他特定亲和材料捕获步骤(1)中的亲和材料,从而通过共价连接的标记化合物和靶点的亲和力富集靶点;(5)鉴定靶点:将富集的靶点从固定相中解离,通过凝胶电泳方法或等效分离方法展开靶点,并通过蛋白质组学比较差异蛋白质,从而识别潜在的靶点;(6)确定靶点:按优先顺序表达或购买步骤(5)中识别的靶点,并逐一与这些靶点相互作用进行比较,以确定化合物的靶点。通过本发明的方法,低透膜性的化合物可以转移到细胞中与细胞内的靶点结合,实现更接近真实生理环境的靶点鉴定,从而为化合物对疾病的作用机制提供更有力的证据。此外,本发明的药物靶点捕获方法新颖、简便、高效、成本低,具有良好的应用前景。