K63-linked ubiquitination of DYRK1A by TRAF2 alleviates Sprouty 2-mediated degradation of EGFR

Cell Death Dis. 2021 Jun 11;12(6):608. doi: 10.1038/s41419-021-03887-2.

Abstract

Dual specificity tyrosine phosphorylation regulated kinase 1A, DYRK1A, functions in multiple cellular pathways, including signaling, endocytosis, synaptic transmission, and transcription. Alterations in dosage of DYRK1A leads to defects in neurogenesis, cell growth, and differentiation, and may increase the risk of certain cancers. DYRK1A localizes to a number of subcellular structures including vesicles where it is known to phosphorylate a number of proteins and regulate vesicle biology. However, the mechanism by which it translocates to vesicles is poorly understood. Here we report the discovery of TRAF2, an E3 ligase, as an interaction partner of DYRK1A. Our data suggest that TRAF2 binds to PVQE motif residing in between the PEST and histidine repeat domain (HRD) of DYRK1A protein, and mediates K63-linked ubiquitination of DYRK1A. This results in translocation of DYRK1A to the vesicle membrane. DYRK1A increases phosphorylation of Sprouty 2 on vesicles, leading to the inhibition of EGFR degradation, and depletion of TRAF2 expression accelerates EGFR degradation. Further, silencing of DYRK1A inhibits the growth of glioma cells mediated by TRAF2. Collectively, these findings suggest that the axis of TRAF2-DYRK1A-Sprouty 2 can be a target for new therapeutic development for EGFR-mediated human pathologies.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animals
  • Cells, Cultured
  • Dyrk Kinases
  • ErbB Receptors / metabolism
  • HEK293 Cells
  • Humans
  • Intracellular Signaling Peptides and Proteins / metabolism
  • Lysine / metabolism
  • Membrane Proteins / metabolism
  • Mice
  • NIH 3T3 Cells
  • Protein Binding
  • Protein Interaction Domains and Motifs
  • Protein Serine-Threonine Kinases / chemistry
  • Protein Serine-Threonine Kinases / metabolism*
  • Protein-Tyrosine Kinases / chemistry
  • Protein-Tyrosine Kinases / metabolism*
  • Proteolysis
  • TNF Receptor-Associated Factor 2 / metabolism*
  • Ubiquitination / physiology

Substances

  • Intracellular Signaling Peptides and Proteins
  • Membrane Proteins
  • PSMD2 protein, human
  • SPRY2 protein, human
  • TNF Receptor-Associated Factor 2
  • EGFR protein, human
  • ErbB Receptors
  • Protein-Tyrosine Kinases
  • Protein Serine-Threonine Kinases
  • Lysine