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    • 4. 发明申请
    • A METHOD FOR THE ASSAY OF ROCK KINASE ACTIVITY IN CELLS
    • 用于细胞中岩石激酶活性测定的方法
    • WO2007117507A1
    • 2007-10-18
    • PCT/US2007/008399
    • 2007-04-03
    • OSI PHARMACEUTICALS, INC.GARTON, Andrew, J.CASTALDO, Linda
    • GARTON, Andrew, J.CASTALDO, Linda
    • G01N33/566
    • C12Q1/485G01N33/5011G01N2500/00
    • The present invention provides a method for determining the intracellular activity of ROCK kinase comprising, providing a sample of cells to be tested for ROCK kinase activity, determining the level of phosphorylation of MYPT1 in the sample, and determining the intracellular activity of ROCK kinase in the sample of cells, wherein the level of MYPT1 phosphorylation directly correlates with the level of intracellular ROCK kinase activity. The invention further provides a method for identifying an agent that inhibits the intracellular activity of ROCK kinase comprising, providing a sample of cells having ROCK kinase activity, determining the degree of reduction of phosphorylation of MYPT1 in the sample by contacting the sample of cells with a test agent and comparing the MYPT1 phosphorylation level with the phosphorylation level of MYPT1 in an identical control sample of cells that was not contacted with the test agent, determining the degree of inhibition of intracellular activity of ROCK kinase in the sample of cells contacted with the agent, wherein the level of MYPT1 phosphorylation directly correlates with the level of intracellular ROCK kinase activity, and thus determining whether the test agent is an agent that inhibits the intracellular activity of ROCK kinase. The test agent may for example be a compound not known to have ROCK kinase inhibitory activity, or a compound identified by an in vitro ROCK kinase assay as having inhibitory activity.
    • 本发明提供了一种确定ROCK激酶的细胞内活性的方法,包括:提供待测试的ROCK激酶活性的细胞样品,测定样品中MYPT1的磷酸化水平,以及测定ROCK激酶在细胞内的活性 细胞样本,其中MYPT1磷酸化水平与细胞内ROCK激酶活性的水平直接相关。 本发明进一步提供了一种鉴定抑制ROCK激酶细胞内活性的试剂的方法,其包括:提供具有ROCK激酶活性的细胞样品,通过将细胞样品接触到样品中的MYPT1的磷酸化程度来确定 测试试剂,并将MYPT1磷酸化水平与未与测试试剂接触的相同对照样品的MYPT1的磷酸化水平进行比较,确定与试剂接触的细胞样品中ROCK激酶的细胞内活性的抑制程度 其中MYPT1磷酸化水平与细胞内ROCK激酶活性的水平直接相关,从而确定测试试剂是否是抑制ROCK激酶的细胞内活性的试剂。 测试剂可以是例如不知道具有ROCK激酶抑制活性的化合物,或通过体外ROCK激酶测定鉴定为具有抑制活性的化合物。