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    • 4. 发明申请
    • BIOLOGICAL MARKERS PREDICTIVE OF ANTI-CANCER RESPONSE TO EPIDERMAL GROWTH FACTOR RECEPTOR KINASE INHIBITORS
    • 生物标志物对表皮生长因子受体激酶抑制剂的抗癌反应预测
    • WO2008127718A2
    • 2008-10-23
    • PCT/US2008/004818
    • 2008-04-14
    • OSI PHARMACEUTICALS, INC.HALEY, JohnTHOMSON, StuartPETTI, Filippo
    • HALEY, JohnTHOMSON, StuartPETTI, Filippo
    • G01N33/574C12Q1/68
    • G01N33/6893G01N33/5011G01N33/57407G01N33/57484G01N2800/52
    • The present invention provides diagnostic and prognostic methods for predicting the effectiveness of treatment of a cancer patient with an EGFR kinase inhibitor. Methods are provided for predicting the sensitivity of tumor cell growth to inhibition by an EGFR kinase inhibitor, comprising assessing whether the tumor cell has undergone an epithelial to mesenchymal transition (EMT), by determining the expression level of epithelial and/or mesenchymal biomarkers, wherein tumor cells that have undergone an EMT are substantially less sensitive to inhibition by EGFR kinase inhibitors. Improved methods for treating cancer patients with EGFR kinase inhibitors that incorporate the above methodology are also provided. Additionally, methods are provided for the identification of new biomarkers that are predictive of responsiveness of tumors to EGFR kinase inhibitors. Furthermore, methods for the identification of agents that restore the sensitivity of tumor cells that have undergone EMT to inhibition by EGFR kinase inhibitors are also provided.
    • 本发明提供了用于预测用EGFR激酶抑制剂治疗癌症患者的有效性的诊断和预后方法。 提供了用于预测肿瘤细胞生长对EGFR激酶抑制剂的抑制的敏感性的方法,包括通过确定上皮和/或间充质生物标志物的表达水平来评估肿瘤细胞是否已经经历上皮至间质转化(EMT),其中 经历EMT的肿瘤细胞对EGFR激酶抑制剂的抑制作用明显较不敏感。 还提供了包含上述方法的用EGFR激酶抑制剂治疗癌症患者的改进方法。 另外,提供了用于鉴定预测肿瘤对EGFR激酶抑制剂的响应性的新生物标志物的方法。 此外,还提供了用于鉴定恢复已经经历EMT的肿瘤细胞对EGFR激酶抑制剂的抑制的敏感性的试剂的方法。
    • 5. 发明申请
    • BIOLOGICAL MARKERS PREDICTIVE OF ANTI-CANCER RESPONSE TO KINASE INHIBITORS
    • 生物标志物预防抗癌剂对激酶抑制剂的反应
    • WO2008127719A1
    • 2008-10-23
    • PCT/US2008/004819
    • 2008-04-14
    • OSI PHARMACEUTICALS, INC.HALEY, JohnTHOMSON, Stuart
    • HALEY, JohnTHOMSON, Stuart
    • C12Q1/48G01N33/574G01N33/74
    • G01N33/6893G01N33/5011G01N2333/4712G01N2333/4742G01N2333/91215
    • The present invention provides diagnostic and prognostic methods for predicting the effectiveness of treatment of a cancer patient with inhibitors of EGFR kinase, PDGFR kinase, or FGFR kinase. Based on the surprising discovery that tumors cells after having undergone an EMT, while being mesenchymal-like, still express characteristics of both epithelial and mesenchymal cells, and that such cells have altered sensitivity to inhibition by receptor protein-tyrosine kinase inhibitors, in that they have become relatively insensitive to EGFR kinase inhibitors, but have frequently aquired sensitivity to inhibitors of other receptor protein-tyrosine kinases such as PDGFR or FGFR, methods have been devised for determining levels of specific epithelial and mesenchymal biomarkers that identify such "hybrid" tumor cells (e.g. determination of co-expression of vimentin and epithelial keratins), and thus predict the tumor's likely sensitivity to inhibitors of EGFR kinase, PDGFR kinase, or FGFR kinase. Improved methods for treating cancer patients with EGFR, PDGFR or FGFR kinase inhibitors that incorporate such methodology are also provided.
    • 本发明提供用于预测具有EGFR激酶,PDGFR激酶或FGFR激酶抑制剂的癌症患者治疗有效性的诊断和预后方法。 基于令人惊讶的发现,肿瘤细胞在经历EMT之后,同时是间充质的,仍然表现出上皮细胞和间充质细胞的特征,并且这种细胞对受体蛋白 - 酪氨酸激酶抑制剂的抑制具有改变的敏感性,因为它们 已经对EGFR激酶抑制剂变得相对不敏感,但是经常对其他受体蛋白酪氨酸激酶(例如PDGFR或FGFR)的抑制剂具有敏感性,已经设计出用于确定鉴定这种“杂合”肿瘤细胞的特异性上皮和间充质生物标志物的水平的方法 (例如测定波形蛋白和上皮角蛋白的共表达),从而预测肿瘤对EGFR激酶,PDGFR激酶或FGFR激酶抑制剂的敏感性。 还提供了用于治疗结合这种方法的EGFR,PDGFR或FGFR激酶抑制剂的癌症患者的改进方法。