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Complementary Genomic Screens Identify SERCA as a Therapeutic Target in NOTCH1 Mutated Cancer.

机译:互补基因组筛选将SERCA确定为NOTCH1突变癌症的治疗靶标。

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Notch1 is a rational therapeutic target in several human cancers, but as a transcriptional regulator, it poses a drug discovery challenge. To identify Notch1 modulators, we performed two cell-based, high-throughput screens for small-molecule inhibitors and cDNA enhancers of a NOTCH1 allele bearing a leukemia-associated mutation. Sarco/endoplasmic reticulum calcium ATPase (SERCA) channels emerged at the intersection of these complementary screens. SERCA inhibition preferentially impairs the maturation and activity of mutated Notch1 receptors and induces a G0/G1 arrest in NOTCH1-mutated human leukemia cells. A small-molecule SERCA inhibitor has on-target activity in two mouse models of human leukemia and interferes with Notch signaling in Drosophila. These studies "credential" SERCA as a therapeutic target in cancers associated with NOTCH1 mutations.
机译:Notch1是几种人类癌症中的合理治疗靶标,但作为转录调节剂,它对药物发现构成了挑战。为了鉴定Notch1调节剂,我们对带有白血病相关突变的NOTCH1等位基因的小分子抑制剂和cDNA增强子进行了两个基于细胞的高通量筛选。在这些互补筛的交叉点出现了Sarco /内质网钙ATP酶(SERCA)通道。 SERCA抑制会优先损害突变的Notch1受体的成熟和活性,并在NOTCH1突变的人类白血病细胞中诱导G0 / G1阻滞。一种小分子SERCA抑制剂在两种人类白血病小鼠模型中具有靶向活性,并干扰果蝇中的Notch信号传导。这些研究将“凭据” SERCA作为与NOTCH1突变相关的癌症的治疗靶标。

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