Small molecule inhibitor of Igf2bp1 represses Kras and a pro-oncogenic phenotype in cancer cells.

Small molecule inhibitor of Igf2bp1 represses Kras and a pro-oncogenic phenotype in cancer cells.
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DOI:
10.1080/15476286.2021.2010983
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发表时间:
2022
期刊:
影响因子:
4.1
通讯作者:
Yisraeli JK
Yisraeli JK
中科院分区:
生物学3区
文献类型:
--
作者:
Wallis N;Oberman F;Shurrush K;Germain N;Greenwald G;Gershon T;Pearl T;Abis G;Singh V;Singh A;Sharma AK;Barr HM;Ramos A;Spiegelman VS;Yisraeli JK

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Igf2bp1是一种癌胚RNA结合蛋白,其在许多类型的癌症中的表达与关键原癌RNA的上调、不良预后和存活率降低相关。重要的是,Igf2bp1与Kras突变协同作用,增强信号传导和致癌活性,这表明抑制Igf2bp1的分子可能具有治疗潜力。在这里,我们分离出一种小分子,它与Igf2bp1 KH 3和KH 4结构域边界处的疏水表面相互作用,并抑制与Kras RNA的结合。在细胞中,该化合物降低Kras和其他Igf2bp1 mRNA靶点的水平,降低Kras蛋白,并抑制下游信号传导、伤口愈合和软琼脂中的生长,所有这些都没有任何毒性。这项工作为改善肺癌和其他潜在癌症中表达Igf2bp1的肿瘤的预后提供了一条途径。
Igf2bp1 is an oncofetal RNA binding protein whose expression in numerous types of cancers is associated with upregulation of key pro-oncogenic RNAs, poor prognosis, and reduced survival. Importantly, Igf2bp1 synergizes with mutations in Kras to enhance signalling and oncogenic activity, suggesting that molecules inhibiting Igf2bp1 could have therapeutic potential. Here, we isolate a small molecule that interacts with a hydrophobic surface at the boundary of Igf2bp1 KH3 and KH4 domains, and inhibits binding to Kras RNA. In cells, the compound reduces the level of Kras and other Igf2bp1 mRNA targets, lowers Kras protein, and inhibits downstream signalling, wound healing, and growth in soft agar, all in the absence of any toxicity. This work presents an avenue for improving the prognosis of Igf2bp1-expressing tumours in lung, and potentially other, cancer(s).
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影响因子: 5
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