1
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Song Q, Han Z, Wu X, Wang Y, Zhou L, Yang L, Liu N, Sui H, Cai J, Ji Q, Li Q. β-Arrestin1 Promotes Colorectal Cancer Metastasis Through GSK-3β/β-Catenin Signaling- Mediated Epithelial-to-Mesenchymal Transition. Front Cell Dev Biol 2021; 9:650067. [PMID: 33996812 PMCID: PMC8114940 DOI: 10.3389/fcell.2021.650067] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2021] [Accepted: 03/31/2021] [Indexed: 12/24/2022] Open
Abstract
Recurrence and metastasis seriously affects the prognosis of patients with tumors, and the epithelial-to-mesenchymal transition (EMT) plays a key role in promoting tumor invasion and metastasis. Previous studies have showed that β-arrestin1 acted as a tumor-promoting factor in multiple types of tumor. However, the exact role and mechanism of β-arrestin1 in colorectal cancer (CRC) progression remains to be elucidated. Our research aimed to explore the potential mechanism underlying the role of β-arrestin1 in CRC metastasis. The expression of β-arrestin1 was investigated in both primary and metastatic CRC tissues using the GSE41258 database, and it was revealed that CRC patients with liver/lung metastasis had a higher expression level of β-arrestin1, and the expression level of β-arrestin1 was inversely correlated with the prognosis of CRC patients. Further in vitro mechanism studies indicated that β-arrestin1 had the ability to promote the migration of CRC cells through regulating the EMT process by activating Wingless/integration-1 (Wnt)/β-catenin signaling pathways. Blocking Wnt/β-catenin signaling with inhibitor ICG001 decreased the promoting effect of β-arrestin1 on EMT in CRC. In vivo imaging experiments further demonstrated the promoting effect of β-arrestin1 on the lung metastasis of CRC cells by tail vein injection in mice. The results of this paper suggest that β-arrestin1 promotes EMT via Wnt/β-catenin signaling pathway in CRC metastasis, and provides a novel therapeutic target for CRC metastasis.
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Affiliation(s)
- Qing Song
- Department of Medical Oncology and Cancer Institute of Integrative Medicine, Shuguang Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China.,Academy of Integrative Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, China.,Department of Medical Oncology, Suzhou TCM Hospital Affiliated to Nanjing University of Chinese Medicine, Suzhou, China
| | - Zhifen Han
- Department of Medical Oncology and Cancer Institute of Integrative Medicine, Shuguang Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China.,Academy of Integrative Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Xinnan Wu
- Department of Medical Oncology and Cancer Institute of Integrative Medicine, Shuguang Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China.,Academy of Integrative Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Yan Wang
- Department of Medical Oncology and Cancer Institute of Integrative Medicine, Shuguang Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China.,Academy of Integrative Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Lihong Zhou
- Department of Medical Oncology and Cancer Institute of Integrative Medicine, Shuguang Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China.,Academy of Integrative Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Liu Yang
- Department of Medical Oncology and Cancer Institute of Integrative Medicine, Shuguang Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China.,Academy of Integrative Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Ningning Liu
- Department of Medical Oncology and Cancer Institute of Integrative Medicine, Shuguang Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China.,Academy of Integrative Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Hua Sui
- Department of Medical Oncology and Cancer Institute of Integrative Medicine, Shuguang Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China.,Academy of Integrative Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Jianfeng Cai
- Department of Chemistry, University of South Florida, Tampa, FL, United States
| | - Qing Ji
- Department of Medical Oncology and Cancer Institute of Integrative Medicine, Shuguang Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China.,Academy of Integrative Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Qi Li
- Department of Medical Oncology and Cancer Institute of Integrative Medicine, Shuguang Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China.,Academy of Integrative Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, China
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2
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The RanBP2/RanGAP1-SUMO complex gates β-arrestin2 nuclear entry to regulate the Mdm2-p53 signaling axis. Oncogene 2021; 40:2243-2257. [PMID: 33649538 DOI: 10.1038/s41388-021-01704-w] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2020] [Revised: 02/04/2021] [Accepted: 02/05/2021] [Indexed: 01/31/2023]
Abstract
Mdm2 antagonizes the tumor suppressor p53. Targeting the Mdm2-p53 interaction represents an attractive approach for the treatment of cancers with functional p53. Investigating mechanisms underlying Mdm2-p53 regulation is therefore important. The scaffold protein β-arrestin2 (β-arr2) regulates tumor suppressor p53 by counteracting Mdm2. β-arr2 nucleocytoplasmic shuttling displaces Mdm2 from the nucleus to the cytoplasm resulting in enhanced p53 signaling. β-arr2 is constitutively exported from the nucleus, via a nuclear export signal, but mechanisms regulating its nuclear entry are not completely elucidated. β-arr2 can be SUMOylated, but no information is available on how SUMO may regulate β-arr2 nucleocytoplasmic shuttling. While we found β-arr2 SUMOylation to be dispensable for nuclear import, we identified a non-covalent interaction between SUMO and β-arr2, via a SUMO interaction motif (SIM), that is required for β-arr2 cytonuclear trafficking. This SIM promotes association of β-arr2 with the multimolecular RanBP2/RanGAP1-SUMO nucleocytoplasmic transport hub that resides on the cytoplasmic filaments of the nuclear pore complex. Depletion of RanBP2/RanGAP1-SUMO levels result in defective β-arr2 nuclear entry. Mutation of the SIM inhibits β-arr2 nuclear import, its ability to delocalize Mdm2 from the nucleus to the cytoplasm and enhanced p53 signaling in lung and breast tumor cell lines. Thus, a β-arr2 SIM nuclear entry checkpoint, coupled with active β-arr2 nuclear export, regulates its cytonuclear trafficking function to control the Mdm2-p53 signaling axis.
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Alexander RA, Lot I, Saha K, Abadie G, Lambert M, Decosta E, Kobayashi H, Beautrait A, Borrull A, Asnacios A, Bouvier M, Scott MGH, Marullo S, Enslen H. Beta-arrestins operate an on/off control switch for focal adhesion kinase activity. Cell Mol Life Sci 2020; 77:5259-5279. [PMID: 32040695 PMCID: PMC11104786 DOI: 10.1007/s00018-020-03471-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2019] [Revised: 01/13/2020] [Accepted: 01/24/2020] [Indexed: 12/20/2022]
Abstract
Focal adhesion kinase (FAK) regulates key biological processes downstream of G protein-coupled receptors (GPCRs) in normal and cancer cells, but the modes of kinase activation by these receptors remain unclear. We report that after GPCR stimulation, FAK activation is controlled by a sequence of events depending on the scaffolding proteins β-arrestins and G proteins. Depletion of β-arrestins results in a marked increase in FAK autophosphorylation and focal adhesion number. We demonstrate that β-arrestins interact directly with FAK and inhibit its autophosphorylation in resting cells. Both FAK-β-arrestin interaction and FAK inhibition require the FERM domain of FAK. Following the stimulation of the angiotensin receptor AT1AR and subsequent translocation of the FAK-β-arrestin complex to the plasma membrane, β-arrestin interaction with the adaptor AP-2 releases inactive FAK from the inhibitory complex, allowing its activation by receptor-stimulated G proteins and activation of downstream FAK effectors. Release and activation of FAK in response to angiotensin are prevented by an AP-2-binding deficient β-arrestin and by a specific inhibitor of β-arrestin/AP-2 interaction; this inhibitor also prevents FAK activation in response to vasopressin. This previously unrecognized mechanism of FAK regulation involving a dual role of β-arrestins, which inhibit FAK in resting cells while driving its activation at the plasma membrane by GPCR-stimulated G proteins, opens new potential therapeutic perspectives in cancers with up-regulated FAK.
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Affiliation(s)
- Revu Ann Alexander
- Institut Cochin, Inserm U 1016, CNRS UMR8104, Université de Paris, 27 rue du Faubourg Saint-Jacques, 75014, Paris, France
| | - Isaure Lot
- Institut Cochin, Inserm U 1016, CNRS UMR8104, Université de Paris, 27 rue du Faubourg Saint-Jacques, 75014, Paris, France
| | - Kusumika Saha
- Institut Cochin, Inserm U 1016, CNRS UMR8104, Université de Paris, 27 rue du Faubourg Saint-Jacques, 75014, Paris, France
| | - Guillaume Abadie
- Institut Cochin, Inserm U 1016, CNRS UMR8104, Université de Paris, 27 rue du Faubourg Saint-Jacques, 75014, Paris, France
| | - Mireille Lambert
- Institut Cochin, Inserm U 1016, CNRS UMR8104, Université de Paris, 27 rue du Faubourg Saint-Jacques, 75014, Paris, France
| | - Eleonore Decosta
- Institut Cochin, Inserm U 1016, CNRS UMR8104, Université de Paris, 27 rue du Faubourg Saint-Jacques, 75014, Paris, France
| | - Hiroyuki Kobayashi
- Department of Biochemistry and the Institute for Research in Immunology and Cancer, Université de Montréal, Montreal, QC, H3C 3J7, Canada
| | - Alexandre Beautrait
- Department of Biochemistry and the Institute for Research in Immunology and Cancer, Université de Montréal, Montreal, QC, H3C 3J7, Canada
| | - Aurélie Borrull
- Institut Cochin, Inserm U 1016, CNRS UMR8104, Université de Paris, 27 rue du Faubourg Saint-Jacques, 75014, Paris, France
| | - Atef Asnacios
- Laboratoire Matière et Systèmes Complexes, CNRS UMR 7057, Université de Paris, Paris, France
| | - Michel Bouvier
- Department of Biochemistry and the Institute for Research in Immunology and Cancer, Université de Montréal, Montreal, QC, H3C 3J7, Canada
| | - Mark G H Scott
- Institut Cochin, Inserm U 1016, CNRS UMR8104, Université de Paris, 27 rue du Faubourg Saint-Jacques, 75014, Paris, France
| | - Stefano Marullo
- Institut Cochin, Inserm U 1016, CNRS UMR8104, Université de Paris, 27 rue du Faubourg Saint-Jacques, 75014, Paris, France
| | - Hervé Enslen
- Institut Cochin, Inserm U 1016, CNRS UMR8104, Université de Paris, 27 rue du Faubourg Saint-Jacques, 75014, Paris, France.
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Abstract
β-Arrestins (β-arrs) were originally appreciated for the roles they play in the desensitization and internalization of G protein-coupled receptors (GPCRs). They are also now known to act as molecular scaffolds, providing control in multiple signalling pathways. Through their scaffolding properties, β-arrs dynamically regulate the activity and/or subcellular distribution of protein partners giving rise to an appropriate cellular response. There are two β-arr isoforms, namely, β-arr1 and β-arr2, which share high sequence homology and structural conservation. While the β-arrs often display conserved overlapping roles, decisive differences between the isoforms also exist. A striking example of this is the subcellular distribution of the β-arr isoforms. While β-arr1 is distributed both in cytoplasmic and nuclear compartments, β-arr2 displays an apparent cytoplasmic distribution. Both β-arrs are actively imported into the nucleus, but β-arr2 is constitutively exported by a leptomycin B-sensitive pathway due to a nuclear export signal in its C-terminus that is absent in β-arr1. β-arr2 therefore undergoes constitutive nucleocytoplasmic shuttling enabling the displacement of nuclear binding cargoes, such as Mdm2. Here, we describe methods to explore the differential nucleocytoplasmic shuttling capacities of the β-arrs.
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5
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Alexander RA, Lot I, Enslen H. Methods to Characterize Protein Interactions with β-Arrestin In Cellulo. Methods Mol Biol 2019; 1957:139-158. [PMID: 30919352 DOI: 10.1007/978-1-4939-9158-7_9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
β-Arrestins 1 and 2 (β-arr1 and β-arr2) are ubiquitous proteins with common and distinct functions. They were initially identified as proteins recruited to stimulated G protein-coupled receptors (GPCRs), regulating their desensitization and internalization. The discovery that β-arrs could also interact with more than 400 non-GPCR protein partners brought to light their central roles as multifunctional scaffold proteins regulating multiple signalling pathways from the plasma membrane to the nucleus, downstream of GPCRs or independently from these receptors. Through the regulation of the activities and subcellular localization of their binding partners, β-arrs control various cell processes such as proliferation, cytoskeletal rearrangement, cell motility, and apoptosis. Thus, the identification of β-arrs binding partners and the characterization of their mode of interaction in cells are central to the understanding of their function. Here we provide methods to explore the molecular interaction of β-arrs with other proteins in cellulo.
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Affiliation(s)
- Revu Ann Alexander
- Institut Cochin, INSERM U1016, CNRS UMR8104, Université Paris Descartes, Sorbonne Paris Cité, Paris, France
| | - Isaure Lot
- Institut Cochin, INSERM U1016, CNRS UMR8104, Université Paris Descartes, Sorbonne Paris Cité, Paris, France
| | - Hervé Enslen
- Institut Cochin, INSERM U1016, CNRS UMR8104, Université Paris Descartes, Sorbonne Paris Cité, Paris, France.
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6
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Laporte SA, Scott MGH. β-Arrestins: Multitask Scaffolds Orchestrating the Where and When in Cell Signalling. Methods Mol Biol 2019; 1957:9-55. [PMID: 30919345 DOI: 10.1007/978-1-4939-9158-7_2] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
The β-arrestins (β-arrs) were initially appreciated for the roles they play in the desensitization and endocytosis of G protein-coupled receptors (GPCRs). They are now also known to act as multifunctional adaptor proteins binding many non-receptor protein partners to control multiple signalling pathways. β-arrs therefore act as key regulatory hubs at the crossroads of external cell inputs and functional outputs in cellular processes ranging from gene transcription to cell growth, survival, cytoskeletal regulation, polarity, and migration. An increasing number of studies have also highlighted the scaffolding roles β-arrs play in vivo in both physiological and pathological conditions, which opens up therapeutic avenues to explore. In this introductory review chapter, we discuss the functional roles that β-arrs exert to control GPCR function, their dynamic scaffolding roles and how this impacts signal transduction events, compartmentalization of β-arrs, how β-arrs are regulated themselves, and how the combination of these events culminates in cellular regulation.
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Affiliation(s)
- Stéphane A Laporte
- Department of Medicine, Research Institute of the McGill University Health Center (RI-MUHC), McGill University, Montreal, QC, Canada. .,Department of Pharmacology and Therapeutics, McGill University, Montréal, QC, Canada. .,Department of Anatomy and Cell Biology, McGill University, Montréal, QC, Canada. .,RI-MUHC/Glen Site, Montréal, QC, Canada.
| | - Mark G H Scott
- Institut Cochin, INSERM U1016, Paris, France. .,CNRS, UMR 8104, Paris, France. .,Univ. Paris Descartes, Sorbonne Paris Cité, Paris, France.
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7
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Kong Z, Deng T, Zhang M, Zhao Z, Liu Y, Luo L, Cai C, Wu W, Duan X. β-arrestin1-medieated inhibition of FOXO3a contributes to prostate cancer cell growth in vitro and in vivo. Cancer Sci 2018; 109:1834-1842. [PMID: 29676828 PMCID: PMC5989847 DOI: 10.1111/cas.13619] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2017] [Revised: 04/11/2018] [Accepted: 04/12/2018] [Indexed: 12/18/2022] Open
Abstract
Recently, β-arrestin1 has been indicated as a prostate cancer promoter through promoting cell proliferation and epithelial to mesenchymal transition, but its underlying mechanism remains unclear. Here, our data revealed that β-arrestin1 could promote cell growth through inhibiting the transcriptional activity and expression of FOXO3a in prostate cancer cells in vitro and in vivo. We found that β-arrestin1 could promote the cell and tumor growth of prostate cancer, and β-arrestin1 expression represented a negative correlation with FOXO3a expression but not FOXO1 expression in prostate cancer cell lines and tissues. In addition, forced expression of β-arrestin1 induced a significant decrease of FOXO3a expression but had no clear effect on FOXO1 expression. Mechanistically, β-arrestin1 could interact with FOXO3a and MDM2, respectively, and promote the interaction between FOXO3a and MDM2, whereas it had no obvious interaction with FOXO1. Furthermore, β-arrestin1 could inhibit the transcriptional activity of FOXO3a via Akt and ERK1/2 pathways. Together, our results revealed a novel mechanism for β-arrestin1 in the regulation of the prostate cancer procession through inhibiting FOXO3a.
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Affiliation(s)
- Zhenzhen Kong
- Department of Urology, Minimally Invasive Surgery Center, the First Affiliated Hospital of Guangzhou Medical University, Guangdong Key Laboratory of Urology, Guangzhou Institute of Urology, Guangzhou, China
| | - Tuo Deng
- Department of Urology, Minimally Invasive Surgery Center, the First Affiliated Hospital of Guangzhou Medical University, Guangdong Key Laboratory of Urology, Guangzhou Institute of Urology, Guangzhou, China
| | - Mengping Zhang
- Department of Oncology, the First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Zhijian Zhao
- Department of Urology, Minimally Invasive Surgery Center, the First Affiliated Hospital of Guangzhou Medical University, Guangdong Key Laboratory of Urology, Guangzhou Institute of Urology, Guangzhou, China
| | - Yang Liu
- Department of Urology, Minimally Invasive Surgery Center, the First Affiliated Hospital of Guangzhou Medical University, Guangdong Key Laboratory of Urology, Guangzhou Institute of Urology, Guangzhou, China
| | - Lianmin Luo
- Department of Urology, Minimally Invasive Surgery Center, the First Affiliated Hospital of Guangzhou Medical University, Guangdong Key Laboratory of Urology, Guangzhou Institute of Urology, Guangzhou, China
| | - Chao Cai
- Department of Urology, Minimally Invasive Surgery Center, the First Affiliated Hospital of Guangzhou Medical University, Guangdong Key Laboratory of Urology, Guangzhou Institute of Urology, Guangzhou, China
| | - Wenqi Wu
- Department of Urology, Minimally Invasive Surgery Center, the First Affiliated Hospital of Guangzhou Medical University, Guangdong Key Laboratory of Urology, Guangzhou Institute of Urology, Guangzhou, China
| | - Xiaolu Duan
- Department of Urology, Minimally Invasive Surgery Center, the First Affiliated Hospital of Guangzhou Medical University, Guangdong Key Laboratory of Urology, Guangzhou Institute of Urology, Guangzhou, China
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8
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Song Q, Ji Q, Li Q. The role and mechanism of β‑arrestins in cancer invasion and metastasis (Review). Int J Mol Med 2017; 41:631-639. [PMID: 29207104 PMCID: PMC5752234 DOI: 10.3892/ijmm.2017.3288] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2017] [Accepted: 11/22/2017] [Indexed: 01/30/2023] Open
Abstract
β-arrestins are a family of adaptor proteins that regulate the signaling and trafficking of various G protein-coupled receptors (GPCRs). They consist of β-arrestin1 and β-arrestin2 and are considered to be scaffolding proteins. β-arrestins regulate cell proliferation, promote cell invasion and migration, transmit anti-apoptotic survival signals and affect other characteristics of tumors, including tumor growth rate, angiogenesis, drug resistance, invasion and metastatic potential. It has been demonstrated that β-arrestins serve roles in various physiological and pathological processes and exhibit a similar function to GPCRs. β-arrestins serve primary roles in cancer invasion and metastasis via various signaling pathways. The present review assessed the function and mechanism of β-arrestins in cancer invasion and metastasis via multiple signaling pathways, including mitogen-activated protein kinase/extracellular signal regulated kinase, Wnt/β-catenin, nuclear factor-κB and phosphoinositide-3 kinase/Akt.
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Affiliation(s)
- Qing Song
- Department of Medical Oncology and Cancer Institute of Integrative Medicine, Shuguang Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, P.R. China
| | - Qing Ji
- Department of Medical Oncology and Cancer Institute of Integrative Medicine, Shuguang Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, P.R. China
| | - Qi Li
- Department of Medical Oncology and Cancer Institute of Integrative Medicine, Shuguang Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, P.R. China
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9
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Javadi A, Deevi RK, Evergren E, Blondel-Tepaz E, Baillie GS, Scott MGH, Campbell FC. PTEN controls glandular morphogenesis through a juxtamembrane β-Arrestin1/ARHGAP21 scaffolding complex. eLife 2017; 6:e24578. [PMID: 28749339 PMCID: PMC5576923 DOI: 10.7554/elife.24578] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2016] [Accepted: 07/24/2017] [Indexed: 01/01/2023] Open
Abstract
PTEN controls three-dimensional (3D) glandular morphogenesis by coupling juxtamembrane signaling to mitotic spindle machinery. While molecular mechanisms remain unclear, PTEN interacts through its C2 membrane-binding domain with the scaffold protein β-Arrestin1. Because β-Arrestin1 binds and suppresses the Cdc42 GTPase-activating protein ARHGAP21, we hypothesize that PTEN controls Cdc42 -dependent morphogenic processes through a β-Arrestin1-ARHGAP21 complex. Here, we show that PTEN knockdown (KD) impairs β-Arrestin1 membrane localization, β-Arrestin1-ARHGAP21 interactions, Cdc42 activation, mitotic spindle orientation and 3D glandular morphogenesis. Effects of PTEN deficiency were phenocopied by β-Arrestin1 KD or inhibition of β-Arrestin1-ARHGAP21 interactions. Conversely, silencing of ARHGAP21 enhanced Cdc42 activation and rescued aberrant morphogenic processes of PTEN-deficient cultures. Expression of the PTEN C2 domain mimicked effects of full-length PTEN but a membrane-binding defective mutant of the C2 domain abrogated these properties. Our results show that PTEN controls multicellular assembly through a membrane-associated regulatory protein complex composed of β-Arrestin1, ARHGAP21 and Cdc42.
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Affiliation(s)
- Arman Javadi
- Centre for Cancer Research and Cell BiologyQueen’s University of BelfastBelfastUnited Kingdom
| | - Ravi K Deevi
- Centre for Cancer Research and Cell BiologyQueen’s University of BelfastBelfastUnited Kingdom
| | - Emma Evergren
- Centre for Cancer Research and Cell BiologyQueen’s University of BelfastBelfastUnited Kingdom
| | - Elodie Blondel-Tepaz
- Inserm, U1016, Institut CochinParisFrance
- CNRS, UMR8104ParisFrance
- Univ. Paris Descartes, Sorbonne Paris CitéParisFrance
| | - George S Baillie
- Institute of Cardiovascular and Medical Science, College of Medical, Veterinary and Life SciencesUniversity of GlasgowGlasgowScotland
| | - Mark GH Scott
- Inserm, U1016, Institut CochinParisFrance
- CNRS, UMR8104ParisFrance
- Univ. Paris Descartes, Sorbonne Paris CitéParisFrance
| | - Frederick C Campbell
- Centre for Cancer Research and Cell BiologyQueen’s University of BelfastBelfastUnited Kingdom
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10
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Duan X, Zhang T, Kong Z, Mai X, Lan C, Chen D, Liu Y, Zeng Z, Cai C, Deng T, Wu W, Zeng G. β-arrestin1 promotes epithelial-mesenchymal transition via modulating GSK-3β/β-catenin pathway in prostate cancer cells. Biochem Biophys Res Commun 2016; 479:204-210. [DOI: 10.1016/j.bbrc.2016.09.039] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2016] [Accepted: 09/08/2016] [Indexed: 01/14/2023]
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