Down syndrome critical region 2 protein inhibits the transcriptional activity of peroxisome proliferator-activated receptor β in HEK293 cells

Hae Jin Song, Joongkyu Park, Su Ryeon Seo, Jongsun Kim, Seung R. Paik, Kwang Chul Chung

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6 Citations (Scopus)


Down syndrome is mainly caused by a trisomy of chromosome 21. The Down syndrome critical region 2 (DSCR2) gene is located within a part of chromosome 21, the Down syndrome critical region (DSCR). To investigate the function of DSCR2, we sought to identify DSCR2-interacting proteins using yeast two-hybrid assays. A human fetal brain cDNA library was screened, and DSCR2 was found to interact with a member of the nuclear receptor superfamily, peroxisome proliferator-activated receptor β, (PPARβ). A co-immunoprecipitation assay demonstrated that DSCR2 physically interacts with PPARβ in mammalian HEK293 cells. DSCR2 also inhibited the ligand-induced transcriptional activity of PPARβ. Furthermore, PPARβ also decreased the solubility of DSCR2, which increased levels of insoluble DSCR2.

Original languageEnglish
Pages (from-to)478-482
Number of pages5
JournalBiochemical and Biophysical Research Communications
Issue number3
Publication statusPublished - 2008 Nov 21


All Science Journal Classification (ASJC) codes

  • Biophysics
  • Biochemistry
  • Molecular Biology
  • Cell Biology

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