Dishevelled has a YAP nuclear export function in a tumor suppressor context-dependent manner

Nat Commun. 2018 Jun 12;9(1):2301. doi: 10.1038/s41467-018-04757-w.

Abstract

Phosphorylation-dependent YAP translocation is a well-known intracellular mechanism of the Hippo pathway; however, the molecular effectors governing YAP cytoplasmic translocation remains undefined. Recent findings indicate that oncogenic YAP paradoxically suppresses Wnt activity. Here, we show that Wnt scaffolding protein Dishevelled (DVL) is responsible for cytosolic translocation of phosphorylated YAP. Mutational inactivation of the nuclear export signal embedded in DVL leads to nuclear YAP retention, with an increase in TEAD transcriptional activity. DVL is also required for YAP subcellular localization induced by E-cadherin, α-catenin, or AMPK activation. Importantly, the nuclear-cytoplasmic trafficking is dependent on the p53-Lats2 or LKB1-AMPK tumor suppressor axes, which determine YAP phosphorylation status. In vivo and clinical data support that the loss of p53 or LKB1 relieves DVL-linked reciprocal inhibition between the Wnt and nuclear YAP activity. Our observations provide mechanistic insights into controlled proliferation coupled with epithelial polarity during development and human cancer.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • A549 Cells
  • AMP-Activated Protein Kinase Kinases
  • AMP-Activated Protein Kinases / metabolism
  • Active Transport, Cell Nucleus*
  • Adaptor Proteins, Signal Transducing / metabolism*
  • Animals
  • Cadherins / metabolism
  • Cell Cycle Proteins
  • Cell Nucleus / metabolism
  • Cytoplasm / metabolism
  • DNA Mutational Analysis
  • Dishevelled Proteins / metabolism*
  • Female
  • Genes, Tumor Suppressor*
  • HCT116 Cells
  • HEK293 Cells
  • Hippo Signaling Pathway
  • Humans
  • MCF-7 Cells
  • Mice
  • Mice, Nude
  • Mutation
  • Phosphoproteins / metabolism*
  • Phosphorylation
  • Protein Serine-Threonine Kinases / metabolism
  • Protein Transport
  • Transcription Factors
  • Tumor Suppressor Protein p53 / metabolism
  • Wnt Proteins / metabolism
  • Wnt1 Protein / metabolism
  • YAP-Signaling Proteins
  • alpha Catenin / metabolism

Substances

  • Adaptor Proteins, Signal Transducing
  • Cadherins
  • Cell Cycle Proteins
  • DVL1 protein, human
  • Dishevelled Proteins
  • Phosphoproteins
  • TP53 protein, human
  • Transcription Factors
  • Tumor Suppressor Protein p53
  • WNT1 protein, human
  • Wnt Proteins
  • Wnt1 Protein
  • YAP-Signaling Proteins
  • YAP1 protein, human
  • Yap1 protein, mouse
  • alpha Catenin
  • Protein Serine-Threonine Kinases
  • STK11 protein, human
  • AMP-Activated Protein Kinase Kinases
  • AMP-Activated Protein Kinases