Atypical function of a centrosomal module in WNT signalling drives contextual cancer cell motility

Nat Commun. 2019 May 29;10(1):2356. doi: 10.1038/s41467-019-10241-w.

Abstract

Centrosomes control cell motility, polarity and migration that is thought to be mediated by their microtubule-organizing capacity. Here we demonstrate that WNT signalling drives a distinct form of non-directional cell motility that requires a key centrosome module, but not microtubules or centrosomes. Upon exosome mobilization of PCP-proteins, we show that DVL2 orchestrates recruitment of a CEP192-PLK4/AURKB complex to the cell cortex where PLK4/AURKB act redundantly to drive protrusive activity and cell motility. This is mediated by coordination of formin-dependent actin remodelling through displacement of cortically localized DAAM1 for DAAM2. Furthermore, abnormal expression of PLK4, AURKB and DAAM1 is associated with poor outcomes in breast and bladder cancers. Thus, a centrosomal module plays an atypical function in WNT signalling and actin nucleation that is critical for cancer cell motility and is associated with more aggressive cancers. These studies have broad implications in how contextual signalling controls distinct modes of cell migration.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Actins / metabolism
  • Adaptor Proteins, Signal Transducing / metabolism
  • Aurora Kinase B / metabolism*
  • Breast Neoplasms / metabolism
  • Carcinoma, Transitional Cell / metabolism
  • Cell Line, Tumor
  • Cell Movement*
  • Centrosome / metabolism*
  • Chromosomal Proteins, Non-Histone / metabolism*
  • Dishevelled Proteins / metabolism*
  • Humans
  • Intracellular Signaling Peptides and Proteins / metabolism
  • Microfilament Proteins / metabolism
  • Neoplasms / metabolism*
  • Prognosis
  • Protein Interaction Maps
  • Protein Serine-Threonine Kinases / metabolism*
  • Real-Time Polymerase Chain Reaction
  • Urinary Bladder Neoplasms / metabolism
  • Wnt Signaling Pathway*
  • rho GTP-Binding Proteins

Substances

  • Actins
  • Adaptor Proteins, Signal Transducing
  • Cep192 protein, human
  • Chromosomal Proteins, Non-Histone
  • DAAM1 protein, human
  • DAAM2 protein, human
  • DVL2 protein, human
  • Dishevelled Proteins
  • Intracellular Signaling Peptides and Proteins
  • Microfilament Proteins
  • PLK4 protein, human
  • AURKB protein, human
  • Aurora Kinase B
  • Protein Serine-Threonine Kinases
  • rho GTP-Binding Proteins