IGF2BP1, a Conserved Regulator of RNA Turnover in Cancer.

IGF2BP1, a Conserved Regulator of RNA Turnover in Cancer.
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DOI:
10.3389/fmolb.2021.632219
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发表时间:
2021
影响因子:
5
通讯作者:
Hüttelmaier S
Hüttelmaier S
中科院分区:
生物学3区
文献类型:
--
作者:
Glaß M;Misiak D;Bley N;Müller S;Hagemann S;Busch B;Rausch A;Hüttelmaier S

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癌胚IGF 2 mRNA结合蛋白1(IGF 2BP 1)促进多种实体瘤的肿瘤进展,其表达与不良预后相关。IGF 2BP 1在癌细胞中的主要作用是稳定编码促癌因子的mRNA。然而,几项IGF 2BP 1-RNA关联研究揭示了过多的推定IGF 2BP 1-RNA靶点。因此,目前在癌症中由IGF 2BP 1控制的主要保守靶RNA和途径仍然难以捉摸。在这项研究中,我们提出了一组基因和癌症标志性途径,显示了一个保守的模式失调的依赖IGF 2BP 1在癌细胞系的表达。通过对这些发现与公开的癌症转录组和IGF 2BP 1-RNA关联数据的综合分析,我们编制了一组主要候选靶mRNA。这些分析证实了IGF 2BP 1在控制癌细胞周期进展中的关键作用,并揭示了受IGF 2BP 1影响的新的癌症标志性途径。对于通过这些研究鉴定的三种新靶mRNA,即AURKA、HDLBP和YWHAZ,我们证实了IGF 2BP 1 mRNA的稳定性。总之,我们的研究结果证实并扩展了先前关于IGF 2BP 1在促进致癌基因表达中的关键作用的研究结果,该作用主要是通过以3 'UTR、m6 A-、miRNA-和潜在的富含AU的元件依赖性方式稳定靶mRNA。
The oncofetal IGF2 mRNA-binding protein 1 (IGF2BP1) promotes tumor progression in a variety of solid tumors and its expression is associated with adverse prognosis. The main role proposed for IGF2BP1 in cancer cells is the stabilization of mRNAs encoding pro-oncogenic factors. Several IGF2BP1-RNA association studies, however, revealed a plethora of putative IGF2BP1-RNA targets. Thus, at present the main conserved target RNAs and pathways controlled by IGF2BP1 in cancer remain elusive. In this study, we present a set of genes and cancer hallmark pathways showing a conserved pattern of deregulation in dependence of IGF2BP1 expression in cancer cell lines. By the integrative analysis of these findings with publicly available cancer transcriptome and IGF2BP1-RNA association data, we compiled a set of prime candidate target mRNAs. These analyses confirm a pivotal role of IGF2BP1 in controlling cancer cell cycle progression and reveal novel cancer hallmark pathways influenced by IGF2BP1. For three novel target mRNAs identified by these studies, namely AURKA, HDLBP and YWHAZ, we confirm IGF2BP1 mRNA stabilization. In sum our findings confirm and expand previous findings on the pivotal role of IGF2BP1 in promoting oncogenic gene expression by stabilizing target mRNAs in a mainly 3’UTR, m6A-, miRNA-, and potentially AU-rich element dependent manner.
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