For the Mouse gene set with the same name, see VIETOR_IFRD1_TARGETS

Systematic name M1534
Brief description Genes down-regulated in c-JunER cells (mammary gland epithelum) by overexpression of IFRD1 [GeneID=3475] off an adenovirus vector.
Full description or abstract The mammalian SIN3 complex consists of histone deacetylases (HDAC1, HDAC2), several known proteins (SAP30, N-CoR) and as yet unidentified proteins. Here we show that the mouse tetradecanoyl phorbol acetate induced sequence 7 (TIS7) protein is a novel transcriptional co-repressor that can associate with the SIN3 complex. We have identified tis7 as a gene that is up-regulated upon loss of polarity in a mouse mammary gland epithelial cell line expressing an estrogen-inducible c-JunER fusion protein. In unpolarized cells, TIS7 protein levels increase and TIS7 translocates into the nucleus. Overexpression of tis7 causes loss of polarity and represses a set of genes, as revealed by cDNA microarray analysis. We have shown that TIS7 protein interacts with several proteins of the SIN3 complex (mSin3B, HDAC1, N-CoR and SAP30) by yeast two-hybrid screening and co-immunoprecipitations. TIS7 co-immunoprecipitated HDAC complex is enzymatically active and represses a GAL4-dependent reporter transcription. The transcriptional repression of endogenous genes by tis7 overexpression is HDAC dependent. Thus, we propose TIS7 as a transcriptional co-repressor affecting the expression of specific genes in a HDAC activity-dependent manner during cell fate decisions, e.g. scattering.
Collection C2: Curated
      CGP: Chemical and Genetic Perturbations
Source publication Pubmed 12198164   Authors: Vietor I,Vadivelu SK,Wick N,Hoffman R,Cotten M,Seiser C,Fialka I,Wunderlich W,Haase A,Korinkova G,Brosch G,Huber LA
Exact source Table 1: Diff. expression =< -1.5
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Source species Mus musculus
Contributed by John Newman (University of Washington)
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Version history 3.1: First introduced

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