TNF-induced oscillations in combinatorial transcription factor binding

Biochem Biophys Res Commun. 2008 Jul 11;371(4):912-6. doi: 10.1016/j.bbrc.2008.03.112. Epub 2008 Mar 31.

Abstract

We have shown in two accompanying papers that TNF induces oscillations in (1) approximately 13% of the genome, and (2) the activation of MAP kinase and NF-kappaB signaling pathways. Here we aim to bridge oscillations in signal transduction activation to oscillations in genetic output. Specifically, we sought to study how these oscillations can combine in a ligand-specific manner at the level of the promoter to initiate gene transcription. We utilize the late onset gene CD38 as a model gene since it has previously been shown that TNF, but not the related cytokine RANK-L, induces its expression. We find that TNF-induced oscillations in p65 and p50 recruitment to the CD38 promoter correlated with recruitment of MAPK-induced AP-1 recruitment, as analyzed by quantitative ChIP analysis. Through re-ChIP analysis we show that a unique transcriptional complex is seen on the promoter at 3h post-TNF addition, corresponding to the onset of CD38 transcription, which is not seen in the basal state. Moreover, we show that RANK-L was unable to combinatorially recruit AP-1 and NF-kappaB transcription factors to the CD38 promoter, despite inducing the activation of both signaling pathways. These results, in sum with the two accompanying papers, constitute a new paradigm through which cells dynamically orchestrate signaling molecules to coordinate time-resolved gene transcription by the formation of novel time-specific transcriptional complexes.

Publication types

  • Research Support, N.I.H., Extramural

MeSH terms

  • ADP-ribosyl Cyclase 1 / genetics*
  • Animals
  • Cells, Cultured
  • Chromatin Immunoprecipitation
  • Mice
  • Mice, Inbred C57BL
  • Mitogen-Activated Protein Kinase Kinases / metabolism
  • NF-kappa B p50 Subunit / metabolism*
  • Promoter Regions, Genetic / drug effects
  • RANK Ligand / pharmacology
  • RANK Ligand / physiology
  • Signal Transduction
  • Transcription Factor AP-1 / metabolism*
  • Transcription Factor RelA / metabolism*
  • Transcription, Genetic / drug effects
  • Transcriptional Activation*
  • Tumor Necrosis Factor-alpha / pharmacology
  • Tumor Necrosis Factor-alpha / physiology*

Substances

  • NF-kappa B p50 Subunit
  • RANK Ligand
  • Rela protein, mouse
  • Transcription Factor AP-1
  • Transcription Factor RelA
  • Tumor Necrosis Factor-alpha
  • Mitogen-Activated Protein Kinase Kinases
  • ADP-ribosyl Cyclase 1