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Author:
Date:
2018-02-05
[Abstract] Cellular quiescence (also known as G0 arrest) is characterized by reduced DNA replication, increased autophagy, and increased expression of cyclin-dependent kinase p27Kip1. Quiescence is essential for wound healing, organ regeneration, and preventing neoplasia. Previous findings indicate that microRNAs (miRNAs) play an important role in regulating cellular quiescence. Our recent publication demonstrated the existence of an alternative miRNA biogenesis pathway in primary human foreskin fibroblast (HFF) cells during quiescence. Indeed, we have identified a group of pri-miRNAs (whose mature miRNAs were found induced during quiescence) modified with a 2,2,7-trimethylguanosine (TMG)-cap by the trimethylguanosine synthase 1 (TGS1) protein and transported to the cytoplasm ...
[摘要] 蜂窝静止（因此已知为G <子> 0 骤停）是由降低的DNA复制，增加自噬表征，并且增加的细胞周期蛋白依赖性激酶p27蛋白上标kip1 表达。静止对伤口愈合，器官再生和瘤形成是必不可少的。先前的发现表明微小RNA（miRNA）在调节细胞静止过程中起重要作用。我们最近的出版物静止期间以实例阐述在原代人替代miRNA生物途径包皮成纤维（HFF）细胞的存在。实际上，我们已经发现了一组与由trimethylguanosine合酶1（TGS1）蛋白的2,2,7- trimethylguanosine（TMG）带肩改性PRI-的miRNA（其成熟miRNA发现静止期期间诱导的）的并运输到细胞质通过Exportin-1（XPO1）蛋白质。我们用来抗体针对（TMG）兴趣盖（不与第（m交叉反应 7 G）兴趣帽了大部分PRI-的miRNA或mRNA的含有[鲁曼等人的，1982]），以从增殖或静态HFFS的总RNA提取RNA进行免疫沉淀。该测定的新颖性是PRI-miRNA的以及含有一个TMG-帽修改以外的非编码RNA的特异性分离。
【背景】蜂窝静止，类型可逆生长停滞的，是在伤口愈合，器官再生，和预防瘤形成涉及一种重要的细胞状态（科勒，2011;瓦尔古等人 2012）。已发现小的非编码RNA如miRNA参与细胞静止的调节。 ...
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