The acetyltransferase HAT1 moderates the NF-κB response by regulating the transcription factor PLZF

Nat Commun. 2015 Apr 13:6:6795. doi: 10.1038/ncomms7795.

Abstract

To date, the activities of protein kinases have formed the core of our understanding of cell signal transduction. Comprehension of the extent of protein acetylation has raised expectations that this alternate post-transcriptional modification will be shown to rival phosphorylation in its importance in mediating cellular responses. However, limited instances have been identified. Here we show that signalling from Toll-like or TNF-α receptors triggers the calcium/calmodulin-dependent protein kinase (CaMK2) to activate histone acetyltransferase-1 (HAT1), which then acetylates the transcriptional regulator PLZF. Acetylation of PLZF promotes the assembly of a repressor complex incorporating HDAC3 and the NF-κB p50 subunit that limits the NF-κB response. Accordingly, diminishing the activity of CaMK2, the expression levels of PLZF or HAT1, or mutating key residues that are covalently modified in PLZF and HAT1, curtails control of the production of inflammatory cytokines. These results identify a central role for acetylation in controlling the inflammatory NF-κB transcriptional programme.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Acetylation
  • Animals
  • Calcium-Calmodulin-Dependent Protein Kinase Type 2 / genetics
  • Calcium-Calmodulin-Dependent Protein Kinase Type 2 / immunology
  • Histone Acetyltransferases / genetics*
  • Histone Acetyltransferases / immunology
  • Histone Deacetylases / genetics
  • Histone Deacetylases / immunology
  • Immunity, Innate
  • Inflammation / chemically induced
  • Inflammation / genetics
  • Inflammation / immunology
  • Inflammation / pathology
  • Kruppel-Like Transcription Factors / deficiency
  • Kruppel-Like Transcription Factors / genetics*
  • Kruppel-Like Transcription Factors / immunology
  • Lipopolysaccharides
  • Mice
  • Mice, Inbred C57BL
  • Mice, Knockout
  • Mutation
  • NF-kappa B / genetics*
  • NF-kappa B / immunology
  • Promyelocytic Leukemia Zinc Finger Protein
  • Protein Processing, Post-Translational*
  • Receptors, Tumor Necrosis Factor / genetics
  • Receptors, Tumor Necrosis Factor / immunology
  • Signal Transduction
  • Transcription, Genetic*

Substances

  • Kruppel-Like Transcription Factors
  • Lipopolysaccharides
  • NF-kappa B
  • Promyelocytic Leukemia Zinc Finger Protein
  • Receptors, Tumor Necrosis Factor
  • Zbtb16 protein, mouse
  • Histone Acetyltransferases
  • histone acetyltransferase type B complex
  • Calcium-Calmodulin-Dependent Protein Kinase Type 2
  • Camk2a protein, mouse
  • Histone Deacetylases
  • histone deacetylase 3