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Biological Procedures Online

Open Access

Chromatin immunoprecipitation assay detects er recruitment to gene specific promoters in uterus

Biological Procedures Online8:81069

Received: 2 May 2006

Accepted: 12 July 2006


Chromatin immunoprecipitation (ChIP) technique allows detection of proteins that bind to chromatin. While this technique has been applied extensively in cell-based studies, its tissue-based application remains poorly explored. We are specifically interested in examining estrogen-dependent transcriptional mechanism in respect of recruitment of estrogen receptor-alpha (ERα), a ligand-activated transcription factor, to uterine gene promoters in mice. Recent genearray studies, utilizing ERα knock-out vs. wild-type mice, have revealed that estrogen regulates numerous uterine genes temporally and most importantly via ERα during the phase-II response, including three well characterized genes viz., lactoferrin (Ltf), progesterone receptor (Pgr) and cyclinD1 (Ccnd1). Here, utilizing systematic ChIP studies, we demonstrate endogenous recruitment of ERα to above uterine gene promoters following estradiol-17β (E2) injection in mice.

Indexing terms

ChromatinImmunoprecipitationEstrogen Receptor Alpha