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Regulation of the Hippo-YAP pathway by G-protein-coupled receptor signaling.

Cell | Aug 17, 2012

http://www.ncbi.nlm.nih.gov/pubmed/22863277

The Hippo pathway is crucial in organ size control, and its dysregulation contributes to tumorigenesis. However, upstream signals that regulate the mammalian Hippo pathway have remained elusive. Here, we report that the Hippo pathway is regulated by G-protein-coupled receptor (GPCR) signaling. Serum-borne lysophosphatidic acid (LPA) and sphingosine 1-phosphophate (S1P) act through G12/13-coupled receptors to inhibit the Hippo pathway kinases Lats1/2, thereby activating YAP and TAZ transcription coactivators, which are oncoproteins repressed by Lats1/2. YAP and TAZ are involved in LPA-induced gene expression, cell migration, and proliferation. In contrast, stimulation of Gs-coupled receptors by glucagon or epinephrine activates Lats1/2 kinase activity, thereby inhibiting YAP function. Thus, GPCR signaling can either activate or inhibit the Hippo-YAP pathway depending on the coupled G protein. Our study identifies extracellular diffusible signals that modulate the Hippo pathway and also establishes the Hippo-YAP pathway as a critical signaling branch downstream of GPCR.

Pubmed ID: 22863277 RIS Download

Mesh terms: Animals | Cell Line | Cell Movement | Cell Proliferation | Humans | Lysophospholipids | Neoplasms | Nuclear Proteins | Organ Size | Phosphorylation | Protein-Serine-Threonine Kinases | Receptors, G-Protein-Coupled | Serum | Signal Transduction | Sphingosine | Transcription Factors

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Associated grants

  • Agency: NIGMS NIH HHS, Id: GM052872
  • Agency: NCI NIH HHS, Id: P30 CA016672
  • Agency: NCI NIH HHS, Id: P30 CA023100
  • Agency: NCI NIH HHS, Id: P30 CA23100
  • Agency: NCI NIH HHS, Id: P50 CA098258
  • Agency: NCI NIH HHS, Id: R01 CA132809
  • Agency: NCI NIH HHS, Id: T32 CA121938
  • Agency: NCI NIH HHS, Id: T32CA121938

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