PMID- 22575959 OWN - NLM STAT- MEDLINE DCOM- 20120625 LR - 20230108 IS - 1476-4687 (Electronic) IS - 0028-0836 (Linking) VI - 485 IP - 7397 DP - 2012 Apr 29 TI - ZNRF3 promotes Wnt receptor turnover in an R-spondin-sensitive manner. PG - 195-200 LID - 10.1038/nature11019 [doi] AB - R-spondin proteins strongly potentiate Wnt signalling and function as stem-cell growth factors. Despite the biological and therapeutic significance, the molecular mechanism of R-spondin action remains unclear. Here we show that the cell-surface transmembrane E3 ubiquitin ligase zinc and ring finger 3 (ZNRF3) and its homologue ring finger 43 (RNF43) are negative feedback regulators of Wnt signalling. ZNRF3 is associated with the Wnt receptor complex, and inhibits Wnt signalling by promoting the turnover of frizzled and LRP6. Inhibition of ZNRF3 enhances Wnt/beta-catenin signalling and disrupts Wnt/planar cell polarity signalling in vivo. Notably, R-spondin mimics ZNRF3 inhibition by increasing the membrane level of Wnt receptors. Mechanistically, R-spondin interacts with the extracellular domain of ZNRF3 and induces the association between ZNRF3 and LGR4, which results in membrane clearance of ZNRF3. These data suggest that R-spondin enhances Wnt signalling by inhibiting ZNRF3. Our study provides new mechanistic insights into the regulation of Wnt receptor turnover, and reveals ZNRF3 as a tractable target for therapeutic exploration. FAU - Hao, Huai-Xiang AU - Hao HX AD - Novartis Institutes for Biomedical Research, 250 Massachusetts Avenue, Cambridge, Massachusetts 02139, USA. FAU - Xie, Yang AU - Xie Y FAU - Zhang, Yue AU - Zhang Y FAU - Charlat, Olga AU - Charlat O FAU - Oster, Emma AU - Oster E FAU - Avello, Monika AU - Avello M FAU - Lei, Hong AU - Lei H FAU - Mickanin, Craig AU - Mickanin C FAU - Liu, Dong AU - Liu D FAU - Ruffner, Heinz AU - Ruffner H FAU - Mao, Xiaohong AU - Mao X FAU - Ma, Qicheng AU - Ma Q FAU - Zamponi, Raffaella AU - Zamponi R FAU - Bouwmeester, Tewis AU - Bouwmeester T FAU - Finan, Peter M AU - Finan PM FAU - Kirschner, Marc W AU - Kirschner MW FAU - Porter, Jeffery A AU - Porter JA FAU - Serluca, Fabrizio C AU - Serluca FC FAU - Cong, Feng AU - Cong F LA - eng PT - Journal Article DEP - 20120429 PL - England TA - Nature JT - Nature JID - 0410462 RN - 0 (DNA-Binding Proteins) RN - 0 (Frizzled Receptors) RN - 0 (LGR4 protein, human) RN - 0 (LRP6 protein, human) RN - 0 (Low Density Lipoprotein Receptor-Related Protein-6) RN - 0 (Oncogene Proteins) RN - 0 (RSPO1 protein, human) RN - 0 (Receptors, G-Protein-Coupled) RN - 0 (Receptors, Wnt) RN - 0 (Thrombospondins) RN - 0 (beta Catenin) RN - EC 2.3.2.27 (RNF43 protein, human) RN - EC 2.3.2.27 (Ubiquitin-Protein Ligases) RN - EC 2.3.2.27 (ZNRF3 protein, human) RN - EC 2.3.2.27 (Znrf3 protein, mouse) SB - IM CIN - Nat Rev Mol Cell Biol. 2012 Jun;13(6):342. PMID: 22617469 CIN - Nat Biotechnol. 2012 Sep;30(9):835-6. PMID: 22965053 CIN - Curr Biol. 2012 Oct 9;22(19):R849-51. PMID: 23058807 MH - Animals MH - Cell Polarity/physiology MH - Colorectal Neoplasms/genetics MH - DNA-Binding Proteins/deficiency/genetics/metabolism MH - Feedback, Physiological MH - Female MH - Frizzled Receptors/metabolism MH - HEK293 Cells MH - Humans MH - Low Density Lipoprotein Receptor-Related Protein-6/metabolism MH - Male MH - Mice MH - Mice, Knockout MH - Oncogene Proteins/deficiency/genetics/metabolism MH - Protein Stability MH - Protein Structure, Tertiary MH - Receptors, G-Protein-Coupled/deficiency/genetics/metabolism MH - Receptors, Wnt/*metabolism MH - Thrombospondins/*metabolism MH - Ubiquitin-Protein Ligases/chemistry/*deficiency/genetics/*metabolism MH - Ubiquitination MH - Wnt Signaling Pathway MH - Xenopus MH - Zebrafish MH - beta Catenin/metabolism EDAT- 2012/05/12 06:00 MHDA- 2012/06/26 06:00 CRDT- 2012/05/12 06:00 PHST- 2011/10/10 00:00 [received] PHST- 2012/03/06 00:00 [accepted] PHST- 2012/05/12 06:00 [entrez] PHST- 2012/05/12 06:00 [pubmed] PHST- 2012/06/26 06:00 [medline] AID - nature11019 [pii] AID - 10.1038/nature11019 [doi] PST - epublish SO - Nature. 2012 Apr 29;485(7397):195-200. doi: 10.1038/nature11019.