IGF-1 receptor activity in the Golgi of migratory cancer cells depends on adhesion-dependent phosphorylation of Tyr1250 and Tyr1251

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dc.contributor.author Rieger, Leonie
dc.contributor.author O’Shea, Sandra
dc.contributor.author Godsmark, Grant
dc.contributor.author Stanicka, Joanna
dc.contributor.author Kelly, Geraldine
dc.contributor.author O’Connor, Rosemary
dc.date.accessioned 2020-06-04T08:13:48Z
dc.date.available 2020-06-04T08:13:48Z
dc.date.issued 2020-05-26
dc.identifier.citation Rieger, L., O’Shea, S., Godsmark, G., Stanicka, J., Kelly, G. and O’Connor, R. (2020) ‘IGF-1 receptor activity in the Golgi of migratory cancer cells depends on adhesion-dependent phosphorylation of Tyr1250 and Tyr1251’, Science Signaling, 13(633), eaba3176. doi: 10.1126/scisignal.aba3176 en
dc.identifier.volume 13 en
dc.identifier.issued 633 en
dc.identifier.issn 1945-0877
dc.identifier.uri http://hdl.handle.net/10468/10125
dc.identifier.doi 10.1126/scisignal.aba3176 en
dc.description.abstract Although insulin-like growth factor 1 (IGF-1) signaling promotes tumor growth and cancer progression, therapies that target the IGF-1 receptor (IGF-1R) have shown poor clinical efficacy. To address IGF-1R activity in cancer cells and how it differs from that of the closely related insulin receptor (IR), we focused on two tyrosines in the IGF-1R C-terminal tail that are not present in the IR and are essential for IGF-1–mediated cancer cell survival, migration, and tumorigenic growth. We found that Tyr1250 and Tyr1251 (Tyr1250/1251) were autophosphorylated in a cell adhesion–dependent manner. To investigate the consequences of this phosphorylation, we generated phosphomimetic Y1250E/Y1251E (EE) and nonphosphorylatable Y1250F/Y1251F (FF) mutant forms of IGF-1R. Although fully competent in kinase activity and signaling, the EE mutant was more rapidly internalized and degraded than either the wild-type or FF receptor. IGF-1 promoted the accumulation of wild-type and EE IGF-1R within the Golgi apparatus, whereas the FF mutant remained at the plasma membrane. Golgi-associated IGF-1R signaling was a feature of migratory cancer cells, and Golgi disruption impaired IGF-1–induced signaling and cell migration. Upon the formation of new cell adhesions, IGF-1R transiently relocalized to the plasma membrane from the Golgi. Thus, phosphorylation at Tyr1250/1251 promoted IGF-1R translocation to and signaling from the Golgi to support an aggressive cancer phenotype. This process distinguishes IGF-1R from IR signaling and could contribute to the poor clinical efficacy of antibodies that target IGF-1R on the cell surface. en
dc.description.sponsorship Science Foundation Ireland (Principal Investigator Award 16/A/4505) en
dc.format.mimetype application/pdf en
dc.language.iso en en
dc.publisher American Association for the Advancement of Science en
dc.rights © 2020, the Authors. Published under license by the American Association for the Advancement of Science. This is the author’s version of the work. It is posted here by permission of the AAAS for personal use, not for redistribution. The definitive version was published in Science Signaling 13(633) on 26 May 2020, doi: 10.1126/scisignal.aba3176 en
dc.subject Insulin-like growth factor 1 en
dc.subject IGF-1 en
dc.subject IGF-1R en
dc.subject Tyrosine en
dc.subject Tyr1250 en
dc.subject Tyr1251 en
dc.subject Tyr1250/1251 en
dc.subject Cell adhesion en
dc.subject Cancer en
dc.subject Tumor en
dc.subject Golgi en
dc.title IGF-1 receptor activity in the Golgi of migratory cancer cells depends on adhesion-dependent phosphorylation of Tyr1250 and Tyr1251 en
dc.type Article (peer-reviewed) en
dc.internal.authorcontactother Rosemary O'Connor, Biochemistry and Cell Biology, University College Cork, Cork, Ireland. +353-21-490-3000 Email: r.oconnor@ucc.ie en
dc.internal.availability Full text available en
dc.description.version Accepted Version en
dc.contributor.funder Science Foundation Ireland en
dc.description.status Peer reviewed en
dc.identifier.journaltitle Science Signaling en
dc.internal.IRISemailaddress r.oconnor@ucc.ie en
dc.internal.bibliocheck Add page range. Amend citation as necessary. en
dc.relation.project info:eu-repo/grantAgreement/SFI/SFI Principal Investigator Programme (PI)/11/PI/1139/IE/IGF-I Receptor signalling and regulation/ en
dc.identifier.eissn 1937-9145


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