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binxman

木虫 (著名写手)

[求助] 60金币求助英译中,禁止机器翻译,关于干细胞的,谢谢!

Integration  of  External  Signaling  Pathways with the Core Transcriptional Network in Embryonic Stem Cells

Transcription factors (TFs) and their specific interactions with targets are crucial for specifying gene-expression programs. To gain insights into the transcriptional regulatory networks in embryonic stem (ES) cells, we use chromatin immunoprecipitation coupled with ultra-high-throughput DNA sequencing (ChIP-seq) to map the locations of 13 sequence-specific TFs (Nanog, Oct4, STAT3, Smad1, Sox2, Zfx, c-Myc, n-Myc, Klf4, Esrrb, Tcfcp2l1, E2f1, and CTCF) and 2 transcription regulators (p300 and Suz12). These factors are known to play different roles in ES-cell biology as components of the LIF and BMP  signaling  pathways, self-renewal regulators, and key reprogramming factors. Our study provides insights into the  integration  of the  signaling pathways into the ES-cell-specific transcription circuitries. Intriguingly, we find specific genomic regions extensively targeted by different TFs. Collectively, the comprehensive mapping of TF-binding sites identifies important features of the transcriptional regulatory networks that define ES-cell identity.

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fuaixiang

金虫 (小有名气)

【答案】应助回帖

binxman(金币+60, 翻译EPI+1): 谢谢!太感谢了!能交个朋友吗?584840913 2011-10-20 22:53:12
胚胎干细胞的外部信号通路与内部转录网络的整合

转录因子(TFs)及其与靶基因之间的特异性相互作用是说明基因表达程序的关键。为了深入理解ES细胞的转录调节网络,我们用染色质免疫沉淀法和超高通量DNA测序(ChIP-seq)来呈现13种TFs (Nanog, Oct4, STAT3, Smad1, Sox2, Zfx, c-Myc, n-Myc, Klf4, Esrrb, Tcfcp2l1, E2f1, and CTCF)和2种转录调节因子(p300 and Suz12)的位置。已知这些因子在胚胎干细胞生物学中起不同的作用,包括LIF和BMP信号通路的组成部分、自我更新因子和关键的重新编程因子。我们的研究提供了如下理解:将信号通路整合到ES细胞特异性转录电路中去。有趣的是,我们发现不同的TFs广泛地针对特定基因组区域。总的来说,TF结合位点的全面呈现确定了决定ES细胞种类的转录调节网络的重要特点。
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