Profiling the quantitative occupancy of myriad transcription factors across conditions by modeling chromatin accessibility data.

Profiling the quantitative occupancy of myriad transcription factors across conditions by modeling chromatin accessibility data.
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DOI:
10.1101/gr.272203.120
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发表时间:
2022-06
期刊:
影响因子:
7
通讯作者:
Hartemink, Alexander J.
Hartemink, Alexander J.
中科院分区:
生物学1区
文献类型:
--
作者:
Luo, Kaixuan;Zhong, Jianling;Safi, Alexias;Hong, Linda K.;Tewari, Alok K.;Song, Lingyun;Reddy, Timothy E.;Ma, Li;Crawford, Gregory E.;Hartemink, Alexander J.

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超过一千种不同的转录因子(TF)在整个人类基因组中以不同的占据率结合。染色质免疫沉淀(ChIP)可以检测全基因组的占有率,但一次只能检测一个TF,这限制了我们全面观察TF占有率的能力,更不用说量化它在不同条件下的变化了。我们开发了TF占用分析器(TOP),这是一种贝叶斯分层回归框架,使用来自单个染色质可及性实验(DNase-或ATAC-seq)的数据来分析多种TF的全基因组定量占用。TOP是受监督的,其分层结构允许其预测任何序列特异性TF的占用率,即使是那些从未用ChIP测定的TF。我们使用TOP分析了整个基因组中数百个序列特异性TF位点的定量占有率,并研究了它们的占有率在多种情况下如何变化:在大约200种人类细胞类型中,通过暴露于不同激素12小时,以及在70个个体的遗传背景中。TOP使TF结合景观的定量变化的成本效益的探索。
Over a thousand different transcription factors (TFs) bind with varying occupancy across the human genome. Chromatin immunoprecipitation (ChIP) can assay occupancy genome-wide, but only one TF at a time, limiting our ability to comprehensively observe the TF occupancy landscape, let alone quantify how it changes across conditions. We developed TF occupancy profiler (TOP), a Bayesian hierarchical regression framework, to profile genome-wide quantitative occupancy of numerous TFs using data from a single chromatin accessibility experiment (DNase- or ATAC-seq). TOP is supervised, and its hierarchical structure allows it to predict the occupancy of any sequence-specific TF, even those never assayed with ChIP. We used TOP to profile the quantitative occupancy of hundreds of sequence-specific TFs at sites throughout the genome and examined how their occupancies changed in multiple contexts: in approximately 200 human cell types, through 12 h of exposure to different hormones, and across the genetic backgrounds of 70 individuals. TOP enables cost-effective exploration of quantitative changes in the landscape of TF binding.
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