Global mapping of c-Myc binding sites and target gene networks in human B cells

Proc Natl Acad Sci U S A. 2006 Nov 21;103(47):17834-9. doi: 10.1073/pnas.0604129103. Epub 2006 Nov 8.

Abstract

The protooncogene MYC encodes the c-Myc transcription factor that regulates cell growth, cell proliferation, cell cycle, and apoptosis. Although deregulation of MYC contributes to tumorigenesis, it is still unclear what direct Myc-induced transcriptomes promote cell transformation. Here we provide a snapshot of genome-wide, unbiased characterization of direct Myc binding targets in a model of human B lymphoid tumor using ChIP coupled with pair-end ditag sequencing analysis (ChIP-PET). Myc potentially occupies > 4,000 genomic loci with the majority near proximal promoter regions associated frequently with CpG islands. Using gene expression profiles with ChIP-PET, we identified 668 direct Myc-regulated gene targets, including 48 transcription factors, indicating that Myc is a central transcriptional hub in growth and proliferation control. This first global genomic view of Myc binding sites yields insights of transcriptional circuitries and cis regulatory modules involving Myc and provides a substantial framework for our understanding of mechanisms of Myc-induced tumorigenesis.

Publication types

  • Research Support, N.I.H., Extramural
  • Research Support, Non-U.S. Gov't

MeSH terms

  • B-Lymphocytes / physiology*
  • Binding Sites
  • Chromatin Immunoprecipitation / methods
  • Chromosome Mapping*
  • CpG Islands
  • Gene Expression Regulation*
  • Genome, Human
  • Humans
  • MicroRNAs / metabolism
  • Promoter Regions, Genetic
  • Proto-Oncogene Proteins c-myc / metabolism*
  • Sequence Analysis, DNA / methods
  • Transcription Factors / genetics
  • Transcription Factors / metabolism

Substances

  • MicroRNAs
  • Proto-Oncogene Proteins c-myc
  • Transcription Factors