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    • 4. 发明申请
    • Translocation and mutant CSF1R Kinase in human leukemia
    • 人类白血病易位和突变型CSF1R激酶
    • US20090197269A1
    • 2009-08-06
    • US12214616
    • 2008-06-20
    • Ting-Lei GuValerie GossRobert PolakiewiczBrian DrukerDenise Walters
    • Ting-Lei GuValerie GossRobert PolakiewiczBrian DrukerDenise Walters
    • C12Q1/68C12N15/11C12N15/00C12N15/87C12N5/06C12P21/00C12N9/96C07K16/18G01N33/574C12Q1/48
    • C12Q1/6886C07K14/47C07K14/7153C07K2319/00C12N9/1205C12Q2600/106C12Q2600/136G01N2500/04
    • In accordance with the invention, a novel gene translocation, (3p21, 5q33), in human myelogenous leukemia (AML) that results in a fusion protein combining part of RNA Binding Protein-6 (RBM6) with Macrophage Colony Stimulating Factor-1 Receptor (CSF1R) kinase has now been identified. The RBM6-CSF1R fusion protein and truncated CSF1R kinase itself, which both retain CSF1R tyrosine kinase activity, were confirmed to drive the proliferation and survival of acute megakaryoblastic leukemia (AML-M7). The invention therefore provides, in part, isolated polynucleotides and vectors encoding the disclosed mutant CSF1R kinase polypeptides, probes for detecting it, isolated mutant polypeptides, recombinant polypeptides, and reagents for detecting the fusion and truncated polypeptides. The disclosed identification of this new fusion protein and truncated kinase enables new methods for determining the presence of these mutant CSF1R kinase polypeptides in a biological sample, methods for screening for compounds that inhibit the proteins, and methods for inhibiting the progression of a cancer characterized by the mutant polynucleotides or polypeptides, which are also provided by the invention.
    • 根据本发明,在人骨髓性白血病(AML)中的新型基因易位(3p21,5q33),其导致将部分RNA结合蛋白-6(RBM6)与巨噬细胞集落刺激因子-1受体(RBF6)结合的融合蛋白 CSF1R)激酶已被鉴定。 确认RBM6-CSF1R融合蛋白和截短的CSF1R激酶本身都保留了CSF1R酪氨酸激酶活性,以驱动急性巨核细胞白血病(AML-M7)的增殖和存活。 因此,本发明部分地提供分离的多核苷酸和编码所公开的突变型CSF1R激酶多肽的载体,用于检测其的探针,分离的突变多肽,重组多肽和用于检测融合和截短的多肽的试剂。 所公开的这种新的融合蛋白和截短的激酶的鉴定使得能够确定生物样品中这些突变型CSF1R激酶多肽的存在的新方法,用于筛选抑制蛋白质的化合物的方法,以及用于抑制癌症进展的方法 突变体多核苷酸或多肽,其也由本发明提供。