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The X-linked methyl binding protein gene Kaiso is highly expressed in brain but is not mutated in Rett syndrome patients
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Della Ragione, Floriana, Tiunova, Anna, Vacca, Marcella, Strazzullo, Maria, González, Eva, Armstrong, Judith, Valero, Rebecca, Campanile, Ciro, Pineda, Mercè, Hultén, Maj A., Monros, Eugenia, D'Esposito, Maurizio and Prokhortchouk, Egor (2006) The X-linked methyl binding protein gene Kaiso is highly expressed in brain but is not mutated in Rett syndrome patients. Gene, Volume 373 . pp. 83-89. doi:10.1016/j.gene.2006.01.015 ISSN 0378-1119.
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Official URL: http://dx.doi.org/10.1016/j.gene.2006.01.015
Abstract
Rett syndrome (RTT; OMIM 312750) is an X-linked dominant neurological disorder, which affects mostly females. It is associated with mutations of the MECP2 gene, codifying for a methyl-CpG DNA binding protein of the MBDs family, sharing the common Methyl Binding Domain. MeCP2 binds single methylated CpG pair and brings transcriptional silencing to the substrate DNA templates. However, around 5-10% of clinically well defined RTT patients do not show any mutations in this gene. Several hypotheses have been postulated to clarify the remaining unexplained RTT cases. We pointed our attention on Kaiso gene. This gene is localized in the Xq23 region and codifies for a protein acting as a methyl-CpG binding protein by using three zinc-finger domains: for this reason it is not strictly related to the MBD family of proteins, even if it may repress transcription of methylated genes as well.
To investigate the potential association of Kaiso disfunction with pathogenesis of Rett syndrome, we approached the analysis at two different levels. Primarily, we performed an itemized murine brain expression analysis of Kaiso gene. Expression data and localization made it an excellent candidate as additional causative gene for MECP2 negative, classical RTT patients. On the bases of this data a detailed mutational analysis of 44 patients from Spanish, UK, and Italian archives has been performed to the coding region of Kaiso. No mutation was found while a very frequent polymorphism was identified and characterized. Our study Suggests that this gene is not implicated in the RTT Molecular pathogenesis, but additional analyses are needed to exclude it as causative gene for X-linked mental retardation disorders. (c) 2006 Elsevier B.V. All rights reserved.
Item Type: | Journal Article | ||||||||||
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Subjects: | Q Science > QH Natural history > QH426 Genetics | ||||||||||
Divisions: | Faculty of Science, Engineering and Medicine > Medicine > Warwick Medical School > Biomedical Sciences > Cell & Developmental Biology Faculty of Science, Engineering and Medicine > Science > Life Sciences (2010- ) |
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Journal or Publication Title: | Gene | ||||||||||
Publisher: | Elsevier Science BV | ||||||||||
ISSN: | 0378-1119 | ||||||||||
Official Date: | 13 March 2006 | ||||||||||
Dates: |
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Volume: | Volume 373 | ||||||||||
Number of Pages: | 7 | ||||||||||
Page Range: | pp. 83-89 | ||||||||||
DOI: | 10.1016/j.gene.2006.01.015 | ||||||||||
Status: | Peer Reviewed | ||||||||||
Publication Status: | Published | ||||||||||
Access rights to Published version: | Restricted or Subscription Access |
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