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Mammalian APE1 controls miRNA processing and its interactome is linked to cancer RNA metabolism.
Nature Communications ( IF 14.7 ) Pub Date : 2017-10-06 , DOI: 10.1038/s41467-017-00842-8
Giulia Antoniali , Fabrizio Serra , Lisa Lirussi , Mikiei Tanaka , Chiara D’Ambrosio , Shiheng Zhang , Slobodanka Radovic , Emiliano Dalla , Yari Ciani , Andrea Scaloni , Mengxia Li , Silvano Piazza , Gianluca Tell

Mammalian apurinic/apyrimidinic endonuclease 1 is a DNA repair enzyme involved in genome stability and expression of genes involved in oxidative stress responses, tumor progression and chemoresistance. However, the molecular mechanisms underlying the role of apurinic/apyrimidinic endonuclease 1 in these processes are still unclear. Recent findings point to a novel role of apurinic/apyrimidinic endonuclease 1 in RNA metabolism. Through the characterization of the interactomes of apurinic/apyrimidinic endonuclease 1 with RNA and other proteins, we demonstrate here a role for apurinic/apyrimidinic endonuclease 1 in pri-miRNA processing and stability via association with the DROSHA-processing complex during genotoxic stress. We also show that endonuclease activity of apurinic/apyrimidinic endonuclease 1 is required for the processing of miR-221/222 in regulating expression of the tumor suppressor PTEN. Analysis of a cohort of different cancers supports the relevance of our findings for tumor biology. We also show that apurinic/apyrimidinic endonuclease 1 participates in RNA-interactomes and protein-interactomes involved in cancer development, thus indicating an unsuspected post-transcriptional effect on cancer genes.APE1 plays an important role in the cellular response to oxidative stress, and mutations are linked to tumor progression and chemoresistance. Here, the authors characterize the interactions of APE1 with RNA and demonstrate a role in microRNA processing.

中文翻译:

哺乳动物APE1控制miRNA的加工,其相互作用基因组与癌症RNA代谢有关。

哺乳动物嘌呤/嘧啶内切核酸酶1是一种DNA修复酶,参与基因组稳定性和涉及氧化应激反应,肿瘤进展和化学抗性的基因表达。然而,在这些过程中,嘌呤/嘧啶核酸内切酶1的潜在分子机制尚不清楚。最近的发现指出了嘌呤/嘧啶内切核酸酶1在RNA代谢中的新作用。通过表征嘌呤/嘧啶核糖核酸内切酶1与RNA和其他蛋白质的相互作用组,我们在这里证明了嘌呤/嘧啶核糖核酸内切酶1在pri-miRNA加工中的作用以及在遗传毒性胁迫下通过与DROSHA加工复合物的结合而稳定。我们还表明,嘌呤/嘧啶核糖核酸内切酶1的核酸内切酶活性是miR-221 / 222在调节肿瘤抑制因子PTEN表达中的处理所必需的。对不同癌症队列的分析支持了我们的发现与肿瘤生物学的相关性。我们还显示了嘌呤/ apyrimidinic核酸内切酶1参与参与癌症发展的RNA相互作用和蛋白质相互作用,因此表明对癌症基因的意外转录后作用.APE1在细胞对氧化应激和突变的反应中起重要作用与肿瘤的进展和化学抗性有关。在这里,作者描述了APE1与RNA的相互作用,并证明了其在microRNA加工中的作用。对不同癌症队列的分析支持了我们的发现与肿瘤生物学的相关性。我们还显示了嘌呤/ apyrimidinic核酸内切酶1参与参与癌症发展的RNA相互作用和蛋白质相互作用,因此表明对癌症基因的意外转录后作用.APE1在细胞对氧化应激和突变的反应中起重要作用与肿瘤的进展和化学抗性有关。在这里,作者描述了APE1与RNA的相互作用,并证明了其在microRNA加工中的作用。对不同癌症队列的分析支持了我们的发现与肿瘤生物学的相关性。我们还显示了嘌呤/嘧啶核糖核酸内切酶1参与了参与癌症发展的RNA相互作用和蛋白质相互作用,从而表明了对癌症基因的意想不到的转录后作用.APE1在细胞对氧化应激和突变的反应中起着重要作用。与肿瘤的进展和化学抗性有关。在这里,作者描述了APE1与RNA的相互作用,并证明了其在microRNA加工中的作用。APE1在细胞对氧化应激的反应中起重要作用,并且突变与肿瘤的进展和化学抗性有关。在这里,作者描述了APE1与RNA的相互作用,并证明了其在microRNA加工中的作用。APE1在细胞对氧化应激的反应中起重要作用,并且突变与肿瘤的进展和化学抗性有关。在这里,作者描述了APE1与RNA的相互作用,并证明了其在microRNA加工中的作用。
更新日期:2017-10-06
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