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snoRNAs are a novel class of biologically relevant Myc targets

Please always quote using this URN: urn:nbn:de:bvb:20-opus-124956
  • Background Myc proteins are essential regulators of animal growth during normal development, and their deregulation is one of the main driving factors of human malignancies. They function as transcription factors that (in vertebrates) control many growth- and proliferation-associated genes, and in some contexts contribute to global gene regulation. Results We combine chromatin immunoprecipitation-sequencing (ChIPseq) and RNAseq approaches in Drosophila tissue culture cells to identify a core set of less than 500 Myc target genes, whoseBackground Myc proteins are essential regulators of animal growth during normal development, and their deregulation is one of the main driving factors of human malignancies. They function as transcription factors that (in vertebrates) control many growth- and proliferation-associated genes, and in some contexts contribute to global gene regulation. Results We combine chromatin immunoprecipitation-sequencing (ChIPseq) and RNAseq approaches in Drosophila tissue culture cells to identify a core set of less than 500 Myc target genes, whose salient function resides in the control of ribosome biogenesis. Among these genes we find the non-coding snoRNA genes as a large novel class of Myc targets. All assayed snoRNAs are affected by Myc, and many of them are subject to direct transcriptional activation by Myc, both in Drosophila and in vertebrates. The loss of snoRNAs impairs growth during normal development, whereas their overexpression increases tumor mass in a model for neuronal tumors. Conclusions This work shows that Myc acts as a master regulator of snoRNP biogenesis. In addition, in combination with recent observations of snoRNA involvement in human cancer, it raises the possibility that Myc’s transforming effects are partially mediated by this class of non-coding transcripts.show moreshow less

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Metadaten
Author: Eva K. Herter, Maria Stauch, Maria Gallant, Elmar Wolf, Thomas Raabe, Peter Gallant
URN:urn:nbn:de:bvb:20-opus-124956
Document Type:Journal article
Faculties:Medizinische Fakultät / Theodor-Boveri-Institut für Biowissenschaften
Medizinische Fakultät / Institut für Medizinische Strahlenkunde und Zellforschung
Language:English
Parent Title (English):BMC Biology
Year of Completion:2015
Volume:13
Issue:25
Source:BMC Biology (2015) 13:25 DOI 10.1186/s12915-015-0132-6
DOI:https://doi.org/10.1186/s12915-015-0132-6
Dewey Decimal Classification:5 Naturwissenschaften und Mathematik / 59 Tiere (Zoologie) / 595 Arthropoden (Gliederfüßer)
Tag:Drosophila; Myc Transcription; growth; ribosome; snoRNA
Release Date:2016/02/01
Collections:Open-Access-Publikationsfonds / Förderzeitraum 2015
Licence (German):License LogoCC BY: Creative-Commons-Lizenz: Namensnennung