FZD10-Gα13 signalling axis points to a role of FZD10 in CNS angiogenesis.

Hot B, Valnohova J, Arthofer E, Simon K, Shin J, Uhlén M, Kostenis E, Mulder J, Schulte G

Cell. Signal. 32 (-) 93-103 [2017-04-00; online 2017-01-24]

Among the 10 Frizzled (FZD) isoforms belonging to the Class F of G protein-coupled receptors (GPCRs), FZD10 remains the most enigmatic. FZD10 shows homology to FZD4 and FZD9 and was previously implicated in both β-catenin-dependent and -independent signalling. In normal tissue, FZD10 levels are generally very low; however, its upregulation in synovial carcinoma has attracted some attention for therapy. Our findings identify FZD10 as a receptor interacting with and signalling through the heterotrimeric G protein Gα13 but not Gα12, Gαi1, GαoA, Gαs, or Gαq. Stimulation with the FZD agonist WNT induced the dissociation of the Gα13 protein from FZD10, and led to global Gα12/13-dependent cell changes assessed by dynamic mass redistribution measurements. Furthermore, we show that FZD10 mediates Gα12/13 activation-dependent induction of YAP/TAZ transcriptional activity. In addition, we show a distinct expression of FZD10 in embryonic CNS endothelial cells at E11.5-E14.5. Given the well-known importance of Gα13 signalling for the development of the vascular system, the selective expression of FZD10 in brain vascular endothelial cells points at a potential role of FZD10-Gα13 signalling in CNS angiogenesis.

Fluorescence Tissue Profiling [Collaborative]

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PubMed 28126591

DOI 10.1016/j.cellsig.2017.01.023

Crossref 10.1016/j.cellsig.2017.01.023

S0898-6568(17)30029-3