Linked Life Data

17130829

Source:http://linkedlifedata.com/resource/pubmed/id/17130829

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
23
pubmed:dateCreated
2007-5-17
pubmed:abstractText
Zinc-finger protein 217 (ZNF217) is a Kruppel-like zinc-finger protein located at 20q13.2, within a region of recurrent maximal amplification. Here, we demonstrate that ZNF217 is a transcriptional repressor protein and report the purification and characterization of a ZNF217 complex. The purified ZNF217 complex consists of approximately six proteins and contains the transcriptional co-repressors CoREST, BHC110/LSD1, histone deacetylase (HDAC) 2 and C-terminal binding protein (CtBP1). The purified ZNF217 complex possesses deacetylase activity as well as lysine 4 histone H3-specific demethylase activity that is most likely mediated by the BHC110/LSD1 component. To determine if ZNF217 is a sequence-specific binding protein, we have made use of cyclic amplification and selection of targets (CAST) assay and identify for the first time a ZNF217 DNA consensus recognition sequence (CRS) that is highly conserved in the human E-cadherin promoter. Chromatin immunoprecipitation (ChIP) experiments demonstrate that ZNF217, as well as the other components of the ZNF217 complex, are found on the region of the proximal E-cadherin promoter that contains the identified ZNF217 CRS in vivo. Using a combination of transient transfections and small interfering RNA, we demonstrate that ZNF217 represses the E-cadherin promoter. Collectively, our results implicate ZNF217 and its associated proteins in a novel pathway that may have profound effects on cancer progression.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
May
pubmed:issn
0950-9232
pubmed:author
pubmed:issnType
Print
pubmed:day
17
pubmed:volume
26
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
3378-86
pubmed:dateRevised
2008-11-21
pubmed:meshHeading
pubmed:year
2007
pubmed:articleTitle
Biochemical characterization of the zinc-finger protein 217 transcriptional repressor complex: identification of a ZNF217 consensus recognition sequence.
pubmed:affiliation
Department of Oncology, London Regional Cancer Program, The University of Western Ontario, London, Ontario, Canada.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't