On the detection and refinement of transcription factor binding sites using ChIP-Seq data.
On the detection and refinement of transcription factor binding sites using ChIP-Seq data.
复制标题
DOI:
10.1093/nar/gkp1180
复制
发表时间:
2010-04
影响因子:
14.9
通讯作者:
Qin ZS
中科院分区:
文献类型:
--
作者:
Hu M;Yu J;Taylor JM;Chinnaiyan AM;Qin ZS
Coupling chromatin immunoprecipitation (ChIP) with recently developed massively parallel sequencing technologies has enabled genome-wide detection of protein–DNA interactions with unprecedented sensitivity and specificity. This new technology, ChIP-Seq, presents opportunities for in-depth analysis of transcription regulation. In this study, we explore the value of using ChIP-Seq data to better detect and refine transcription factor binding sites (TFBS). We introduce a novel computational algorithm named Hybrid Motif Sampler (HMS), specifically designed for TFBS motif discovery in ChIP-Seq data. We propose a Bayesian model that incorporates sequencing depth information to aid motif identification. Our model also allows intra-motif dependency to describe more accurately the underlying motif pattern. Our algorithm combines stochastic sampling and deterministic ‘greedy’ search steps into a novel hybrid iterative scheme. This combination accelerates the computation process. Simulation studies demonstrate favorable performance of HMS compared to other existing methods. When applying HMS to real ChIP-Seq datasets, we find that (i) the accuracy of existing TFBS motif patterns can be significantly improved; and (ii) there is significant intra-motif dependency inside all the TFBS motifs we tested; modeling these dependencies further improves the accuracy of these TFBS motif patterns. These findings may offer new biological insights into the mechanisms of transcription factor regulation.
登录
查看更多内容
影响因子:
46.9
作者:
Ji, Hongkai;Jiang, Hui;Ma, Wenxiu;Johnson, David S.;Myers, Richard M.;Wong, Wing H.
通讯作者:
Wong, Wing H.
影响因子:
14.9
作者:
Bulyk, ML;Johnson, PLF;Church, GM
通讯作者:
Church, GM
影响因子:
5.8
作者:
Jensen, ST;Liu, JS
通讯作者:
Liu, JS
DOI:
10.1073/pnas.180265397
发表时间:
2000-08-29
影响因子:
11.1
作者:
Bussemaker, HJ;Li, H;Siggia, ED
通讯作者:
Siggia, ED
影响因子:
64.5
作者:
Kim, Tae Hoon;Abdullaev, Ziedulla K.;Ren, Bing
通讯作者:
Ren, Bing