Developmentally dynamic changes of DNA methylation in the mouse Snurf/Snrpn gene

Kazumi Miyazaki, Christophe K Mapendano, Tomokazu Fuchigami, Shinji Kondo, Tohru Ohta, Akira Kinoshita, Kazuhiro Tsukamoto, Ko-ichiro Yoshiura, Norio Niikawa, Tatsuya Kishino

Research output: Contribution to journalJournal articleResearchpeer-review

13 Citations (Scopus)

Abstract

The mouse Snurf/Snrpn gene has two differentially methylated regions (DMRs), the maternally methylated region at the 5' end (DMR1) and the paternally methylated region at the 3' end (DMR2). DMR1, a region that includes the Snrpn promoter and the entire intron 1, has been thought to be a germline DMR, which inherits the parental-specific methylation profile from the gametes. DMR1 is not only associated with imprinted Snrpn expression, but implicated in imprinting control of other genes in the region. We have now characterized the highly conserved activator sequence (CAS) in the Snrpn intron 1 among human and rodents and demonstrate that the mouse CAS is not a germline DMR but shows developmentally dynamic changes of DNA methylation and has methylation-sensitive enhancer activity. The tissue-specific methylation of the mouse CAS and its methylation-sensitive enhancer activity may control tissue-specific expression of IC transcripts, resulting in the establishment and/or maintenance of imprinting in the Snrpn locus.

Original languageEnglish
JournalGene
Volume432
Issue number1-2
Pages (from-to)97-101
Number of pages5
ISSN0378-1119
DOIs
Publication statusPublished - 2009
Externally publishedYes

Keywords

  • Alleles
  • Animals
  • Brain/metabolism
  • Cells, Cultured
  • Conserved Sequence
  • CpG Islands/genetics
  • DNA Methylation
  • Enhancer Elements, Genetic
  • Female
  • Gene Expression Regulation, Developmental
  • Genome/genetics
  • Humans
  • Lymphocytes/metabolism
  • Male
  • Mice
  • Neurons/metabolism
  • Organ Specificity
  • snRNP Core Proteins/genetics

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