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PMID:17898168

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Citation

Orian, A, Delrow, JJ, Rosales Nieves, AE, Abed, M, Metzger, D, Paroush, Z, Eisenman, RN and Parkhurst, SM (2007) A Myc-Groucho complex integrates EGF and Notch signaling to regulate neural development. Proc. Natl. Acad. Sci. U.S.A. 104:15771-6

Abstract

Integration of patterning cues via transcriptional networks to coordinate gene expression is critical during morphogenesis and misregulated in cancer. Using DNA adenine methyltransferase (Dam)ID chromatin profiling, we identified a protein-protein interaction between the Drosophila Myc oncogene and the Groucho corepressor that regulates a subset of direct dMyc targets. Most of these shared targets affect fate or mitosis particularly during neurogenesis, suggesting the dMyc-Groucho complex may coordinate fate acquisition with mitotic capacity during development. We find an antagonistic relationship between dMyc and Groucho that mimics the antagonistic interactions found for EGF and Notch signaling: dMyc is required to specify neuronal fate and enhance neuroblast mitosis, whereas Groucho is required to maintain epithelial fate and inhibit mitosis. Our results suggest that the dMyc-Groucho complex defines a previously undescribed mechanism of Myc function and may serve as the transcriptional unit that integrates EGF and Notch inputs to regulate early neuronal development.

Links

PubMed PMC2000393 Online version:10.1073/pnas.0707418104

Keywords

Animals; Basic Helix-Loop-Helix Transcription Factors/genetics; Basic Helix-Loop-Helix Transcription Factors/physiology; Chromatin/genetics; Drosophila/embryology; Drosophila/genetics; Embryo, Nonmammalian/physiology; Gene Expression Profiling; Gene Expression Regulation, Developmental; Genes, myc; Nervous System/embryology; Receptor, Epidermal Growth Factor/physiology; Repressor Proteins/genetics; Repressor Proteins/physiology; Signal Transduction; Site-Specific DNA-Methyltransferase (Adenine-Specific)/genetics; Transcription, Genetic

Significance

Annotations

Gene product Qualifier GO ID GO term name Evidence Code with/from Aspect Notes Status


See also

References

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