PMID- 24616100 OWN - NLM STAT- MEDLINE DCOM- 20140604 LR - 20211021 IS - 1083-351X (Electronic) IS - 0021-9258 (Print) IS - 0021-9258 (Linking) VI - 289 IP - 16 DP - 2014 Apr 18 TI - Insulin receptor substrate 1/2 (IRS1/2) regulates Wnt/beta-catenin signaling through blocking autophagic degradation of dishevelled2. PG - 11230-11241 LID - S0021-9258(20)48340-1 [pii] LID - 10.1074/jbc.M113.544999 [doi] AB - Wnt signaling plays a pivotal role in cell proliferation, tissue homeostasis, and tumorigenesis. Dishevelled (Dvl) is a central node of Wnt signaling. Insulin receptor substrates (IRSs), as a critical component of insulin signaling, are involved in cell proliferation, metabolism, and cancer development. In this study, we report that IRS1/2 promotes Wnt/beta-catenin signaling by stabilizing Dvl2. We found that IRS1/2 interacts with Dvl2. Overexpression of IRS1/2 increased the protein level of Dvl2 and promoted canonical Wnt signaling, as evidenced by the increased T cell-specific factor 4 transcriptional activity and the up-regulation of expression of CYCLIN D1 and c-MYC, two Wnt target genes critical for cell growth, whereas depletion of IRS1/2 reduced the level of Dvl2 and attenuated Wnt/beta-catenin signaling. Biochemical analyses revealed that IRS1/2 decreased Lys-63-linked ubiquitination of Dvl2 and stabilized Dvl2 protein via suppressing its autophagy-mediated degradation. We further revealed that IRS1/2 blocks autophagy-induced formation of the Dvl2-p62/SQSTM1 complex, resulting in disabled association of Dvl2 to autophagosomes. We demonstrated that IRS1/2 promoted the induction of epithelial-mesenchymal transition (EMT) and cell proliferation in response to Wnt stimulation, whereas depletion of Dvl2 impaired the IRS1/2-mediated EMT and cell growth. Our findings revealed that IRS1/2 promotes EMT and cell proliferation through stabilizing Dvl2. FAU - Geng, Yongtao AU - Geng Y AD - School of Life Sciences, Peking University, Beijing 100871, China,; State Key Laboratory of Biomembrane and Membrane Biotechnology, School of Medicine, National Engineering Laboratory for Anti-tumor Therapeutics, Tsinghua University, Beijing 100084, China. FAU - Ju, Yanfang AU - Ju Y AD - the Department of Oncology, Chinese People's Liberation Army General Hospital, Beijing 100853, China, and. FAU - Ren, Fangli AU - Ren F AD - State Key Laboratory of Biomembrane and Membrane Biotechnology, School of Medicine, National Engineering Laboratory for Anti-tumor Therapeutics, Tsinghua University, Beijing 100084, China. FAU - Qiu, Ying AU - Qiu Y AD - State Key Laboratory of Biomembrane and Membrane Biotechnology, School of Medicine, National Engineering Laboratory for Anti-tumor Therapeutics, Tsinghua University, Beijing 100084, China. FAU - Tomita, Yasuhiko AU - Tomita Y AD - the Department of Pathology, Osaka Medical Center for Cancer and Cardiovascular Diseases, Osaka 537-8511, Japan. FAU - Tomoeda, Miki AU - Tomoeda M AD - the Department of Pathology, Osaka Medical Center for Cancer and Cardiovascular Diseases, Osaka 537-8511, Japan. FAU - Kishida, Mioka AU - Kishida M AD - the Department of Pathology, Osaka Medical Center for Cancer and Cardiovascular Diseases, Osaka 537-8511, Japan. FAU - Wang, Yinyin AU - Wang Y AD - State Key Laboratory of Biomembrane and Membrane Biotechnology, School of Medicine, National Engineering Laboratory for Anti-tumor Therapeutics, Tsinghua University, Beijing 100084, China. FAU - Jin, Lian AU - Jin L AD - School of Life Sciences, Peking University, Beijing 100871, China. FAU - Su, Fuqin AU - Su F AD - State Key Laboratory of Biomembrane and Membrane Biotechnology, School of Medicine, National Engineering Laboratory for Anti-tumor Therapeutics, Tsinghua University, Beijing 100084, China. FAU - Wei, Chunhong AU - Wei C AD - School of Life Sciences, Peking University, Beijing 100871, China. FAU - Jia, Baoqing AU - Jia B AD - the Department of Oncology, Chinese People's Liberation Army General Hospital, Beijing 100853, China, and. FAU - Li, Yi AU - Li Y AD - School of Life Sciences, Peking University, Beijing 100871, China,. Electronic address: liyi@pku.edu.cn. FAU - Chang, Zhijie AU - Chang Z AD - State Key Laboratory of Biomembrane and Membrane Biotechnology, School of Medicine, National Engineering Laboratory for Anti-tumor Therapeutics, Tsinghua University, Beijing 100084, China,. Electronic address: zhijiec@tsinghua.edu.cn. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20140310 PL - United States TA - J Biol Chem JT - The Journal of biological chemistry JID - 2985121R RN - 0 (Adaptor Proteins, Signal Transducing) RN - 0 (CCND1 protein, human) RN - 0 (DVL2 protein, human) RN - 0 (Dishevelled Proteins) RN - 0 (IRS1 protein, human) RN - 0 (IRS2 protein, human) RN - 0 (Insulin Receptor Substrate Proteins) RN - 0 (MYC protein, human) RN - 0 (Multiprotein Complexes) RN - 0 (Phosphoproteins) RN - 0 (Proto-Oncogene Proteins c-myc) RN - 0 (SQSTM1 protein, human) RN - 0 (Sequestosome-1 Protein) RN - 0 (Transcription Factor 7-Like 2 Protein) RN - 0 (Wnt Proteins) RN - 0 (beta Catenin) RN - 136601-57-5 (Cyclin D1) SB - IM MH - Adaptor Proteins, Signal Transducing/genetics/*metabolism MH - Autophagy/*physiology MH - Cell Proliferation MH - Cyclin D1/genetics/metabolism MH - Dishevelled Proteins MH - Epithelial-Mesenchymal Transition/*physiology MH - HEK293 Cells MH - Humans MH - Insulin Receptor Substrate Proteins/genetics/*metabolism MH - Multiprotein Complexes/genetics/metabolism MH - Phosphoproteins/genetics/*metabolism MH - Protein Stability MH - Proto-Oncogene Proteins c-myc/genetics/metabolism MH - Sequestosome-1 Protein MH - Transcription Factor 7-Like 2 Protein/genetics/metabolism MH - Ubiquitination/physiology MH - Wnt Proteins/genetics/metabolism MH - Wnt Signaling Pathway/*physiology MH - beta Catenin/genetics/metabolism PMC - PMC4036261 OTO - NOTNLM OT - Autophagy OT - Cell Proliferation OT - Dishevelled2 OT - EMT OT - IRS OT - Wnt Signaling OT - beta-Catenin EDAT- 2014/03/13 06:00 MHDA- 2014/06/05 06:00 PMCR- 2015/04/18 CRDT- 2014/03/12 06:00 PHST- 2014/03/12 06:00 [entrez] PHST- 2014/03/13 06:00 [pubmed] PHST- 2014/06/05 06:00 [medline] PHST- 2015/04/18 00:00 [pmc-release] AID - S0021-9258(20)48340-1 [pii] AID - M113.544999 [pii] AID - 10.1074/jbc.M113.544999 [doi] PST - ppublish SO - J Biol Chem. 2014 Apr 18;289(16):11230-11241. doi: 10.1074/jbc.M113.544999. Epub 2014 Mar 10.