Analysis of transcription factor interactions in osteoblasts using competitive chromatin immunoprecipitation.
Analysis of transcription factor interactions in osteoblasts using competitive chromatin immunoprecipitation.
复制标题
使用竞争性染色质免疫沉淀分析成骨细胞中的转录因子相互作用。
DOI:
10.1093/nar/gkn022
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发表时间:
2008-03
影响因子:
14.9
通讯作者:
Franceschi, Renny T.
中科院分区:
文献类型:
--
作者:
Roca, Hernan;Franceschi, Renny T.
Chromatin immunoprecipitation (ChIP) is a widely used technique for quantifying protein–DNA interactions in living cells. This method commonly uses fixed (crosslinked) chromatin that is fragmented by sonication (X-ChIP). We developed a simple new ChIP procedure for the immunoprecipitation of sonicated chromatin isolated from osteoblasts in the absence of crosslinking (N-ChIP). The use of noncrosslinked chromatin allowed development of a new modification of the ChIP assay: the combination of N-ChIP and competition with double-stranded oligonucleotides containing specific binding sites for individual transcription factors (Competitive N-ChIP). Using this approach, we were able to discriminate between individual binding sites for the Runx2 transcription factor in the osteocalcin and bone sialoprotein genes that cannot be resolved by traditional X-ChIP. N-ChIP assays were also able to detect several other types of chromatin interactions including those with Dlx homeodomain factors and nuclear proteins such as Sin3a that lack an intrinsic DNA-binding motif and, therefore, bind to chromatin via interactions with other proteins.
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影响因子:
4.8
作者:
Hassan, Mohammad Q.;Tare, Rahul S.;Lian, Jane B.
通讯作者:
Lian, Jane B.
影响因子:
10.5
作者:
Robledo, RF;Rajan, L;Lufkin, T
通讯作者:
Lufkin, T
影响因子:
13.8
作者:
Orlando, V
通讯作者:
Orlando, V
DOI:
10.1006/meth.1996.0407
发表时间:
1997-02-01
期刊:
METHODS-A COMPANION TO METHODS IN ENZYMOLOGY
影响因子:
--
作者:
Orlando, V;Strutt, H;Paro, R
通讯作者:
Paro, R
影响因子:
64.5
作者:
Mundlos, S;Otto, F;Olsen, BR
通讯作者:
Olsen, BR