1
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Caetano da Silva C, Macias Trevino C, Mitchell J, Murali H, Tsimbal C, Dalessandro E, Carroll SH, Kochhar S, Curtis SW, Cheng CHE, Wang F, Kutschera E, Carstens RP, Xing Y, Wang K, Leslie EJ, Liao EC. Functional analysis of ESRP1/2 gene variants and CTNND1 isoforms in orofacial cleft pathogenesis. Commun Biol 2024; 7:1040. [PMID: 39179789 PMCID: PMC11344038 DOI: 10.1038/s42003-024-06715-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2024] [Accepted: 08/09/2024] [Indexed: 08/26/2024] Open
Abstract
Orofacial cleft (OFC) is a common human congenital anomaly. Epithelial-specific RNA splicing regulators ESRP1 and ESRP2 regulate craniofacial morphogenesis and their disruption result in OFC in zebrafish, mouse and humans. Using esrp1/2 mutant zebrafish and murine Py2T cell line models, we functionally tested the pathogenicity of human ESRP1/2 gene variants. We found that many variants predicted by in silico methods to be pathogenic were functionally benign. Esrp1 also regulates the alternative splicing of Ctnnd1 and these genes are co-expressed in the embryonic and oral epithelium. In fact, over-expression of ctnnd1 is sufficient to rescue morphogenesis of epithelial-derived structures in esrp1/2 zebrafish mutants. Additionally, we identified 13 CTNND1 variants from genome sequencing of OFC cohorts, confirming CTNND1 as a key gene in human OFC. This work highlights the importance of functional assessment of human gene variants and demonstrates the critical requirement of Esrp-Ctnnd1 acting in the embryonic epithelium to regulate palatogenesis.
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Affiliation(s)
- Caroline Caetano da Silva
- Center for Craniofacial Innovation, Division of Plastic and Reconstructive Surgery, Department of Surgery, Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | | | | | - Hemma Murali
- Department of Pathology and Laboratory Medicine, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, USA
| | - Casey Tsimbal
- Center for Craniofacial Innovation, Division of Plastic and Reconstructive Surgery, Department of Surgery, Children's Hospital of Philadelphia, Philadelphia, PA, USA
- Shriners Hospital for Children, Tampa, FL, USA
| | - Eileen Dalessandro
- Center for Craniofacial Innovation, Division of Plastic and Reconstructive Surgery, Department of Surgery, Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | - Shannon H Carroll
- Center for Craniofacial Innovation, Division of Plastic and Reconstructive Surgery, Department of Surgery, Children's Hospital of Philadelphia, Philadelphia, PA, USA
- Shriners Hospital for Children, Tampa, FL, USA
| | - Simren Kochhar
- Department of Human Genetics, Emory University School of Medicine, Atlanta, GA, USA
| | - Sarah W Curtis
- Department of Human Genetics, Emory University School of Medicine, Atlanta, GA, USA
| | - Ching Hsun Eric Cheng
- Center for Craniofacial Innovation, Division of Plastic and Reconstructive Surgery, Department of Surgery, Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | - Feng Wang
- Center for Genomic Medicine, Department of Biomedical and Health Informatics, Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | - Eric Kutschera
- Center for Genomic Medicine, Department of Biomedical and Health Informatics, Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | - Russ P Carstens
- Department of Medicine, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, USA
| | - Yi Xing
- Department of Pathology and Laboratory Medicine, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, USA
- Center for Genomic Medicine, Department of Biomedical and Health Informatics, Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | - Kai Wang
- Department of Pathology and Laboratory Medicine, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, USA
| | - Elizabeth J Leslie
- Department of Human Genetics, Emory University School of Medicine, Atlanta, GA, USA
| | - Eric C Liao
- Center for Craniofacial Innovation, Division of Plastic and Reconstructive Surgery, Department of Surgery, Children's Hospital of Philadelphia, Philadelphia, PA, USA.
- Harvard Medical School, Boston, MA, USA.
- Shriners Hospital for Children, Tampa, FL, USA.
- Department of Surgery, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, USA.
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2
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da Silva CC, Trevino CM, Mitchell J, Murali H, Tsimbal C, Dalessandro E, Carroll SH, Kochhar S, Curtis SW, Cheng CHE, Wang F, Kutschera E, Carstens RP, Xing Y, Wang K, Leslie EJ, Liao EC. Functional analysis of ESRP1/2 gene variants and CTNND1 isoforms in orofacial cleft pathogenesis. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.07.02.601574. [PMID: 39005284 PMCID: PMC11245018 DOI: 10.1101/2024.07.02.601574] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/16/2024]
Abstract
Orofacial cleft (OFC) is a common human congenital anomaly. Epithelial-specific RNA splicing regulators ESRP1 and ESRP2 regulate craniofacial morphogenesis and their disruption result in OFC in zebrafish, mouse and humans. Using esrp1/2 mutant zebrafish and murine Py2T cell line models, we functionally tested the pathogenicity of human ESRP1/2 gene variants. We found that many variants predicted by in silico methods to be pathogenic were functionally benign. Esrp1 also regulates the alternative splicing of Ctnnd1 and these genes are co-expressed in the embryonic and oral epithelium. In fact, over-expression of ctnnd1 is sufficient to rescue morphogenesis of epithelial-derived structures in esrp1/2 zebrafish mutants. Additionally, we identified 13 CTNND1 variants from genome sequencing of OFC cohorts, confirming CTNND1 as a key gene in human OFC. This work highlights the importance of functional assessment of human gene variants and demonstrates the critical requirement of Esrp-Ctnnd1 acting in the embryonic epithelium to regulate palatogenesis.
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Affiliation(s)
- Caroline Caetano da Silva
- Center for Craniofacial Innovation, Division of Plastic and Reconstructive Surgery, Department of Surgery, Children’s Hospital of Philadelphia, PA, USA
| | | | | | - Hemma Murali
- Department of Pathology and Laboratory Medicine, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, USA
| | - Casey Tsimbal
- Center for Craniofacial Innovation, Division of Plastic and Reconstructive Surgery, Department of Surgery, Children’s Hospital of Philadelphia, PA, USA
- Shriners Hospital for Children, Tampa, FL, USA
| | - Eileen Dalessandro
- Center for Craniofacial Innovation, Division of Plastic and Reconstructive Surgery, Department of Surgery, Children’s Hospital of Philadelphia, PA, USA
| | - Shannon H. Carroll
- Center for Craniofacial Innovation, Division of Plastic and Reconstructive Surgery, Department of Surgery, Children’s Hospital of Philadelphia, PA, USA
- Shriners Hospital for Children, Tampa, FL, USA
| | - Simren Kochhar
- Department of Human Genetics, Emory University School of Medicine, Atlanta, GA, USA
| | - Sarah W. Curtis
- Department of Human Genetics, Emory University School of Medicine, Atlanta, GA, USA
| | - Ching Hsun Eric Cheng
- Center for Craniofacial Innovation, Division of Plastic and Reconstructive Surgery, Department of Surgery, Children’s Hospital of Philadelphia, PA, USA
| | - Feng Wang
- Center for Genomic Medicine, Department of Biomedical and Health Informatics, Children’s Hospital of Philadelphia, PA, USA
| | - Eric Kutschera
- Center for Genomic Medicine, Department of Biomedical and Health Informatics, Children’s Hospital of Philadelphia, PA, USA
| | - Russ P. Carstens
- Department of Medicine, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, USA
| | - Yi Xing
- Center for Genomic Medicine, Department of Biomedical and Health Informatics, Children’s Hospital of Philadelphia, PA, USA
- Department of Pathology and Laboratory Medicine, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, USA
| | - Kai Wang
- Department of Pathology and Laboratory Medicine, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, USA
| | - Elizabeth J. Leslie
- Department of Human Genetics, Emory University School of Medicine, Atlanta, GA, USA
| | - Eric C. Liao
- Center for Craniofacial Innovation, Division of Plastic and Reconstructive Surgery, Department of Surgery, Children’s Hospital of Philadelphia, PA, USA
- Harvard Medical School, Boston, MA, USA
- Shriners Hospital for Children, Tampa, FL, USA
- Department of Surgery, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, USA
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3
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Tan CX, Bindu DS, Hardin EJ, Sakers K, Baumert R, Ramirez JJ, Savage JT, Eroglu C. δ-Catenin controls astrocyte morphogenesis via layer-specific astrocyte-neuron cadherin interactions. J Cell Biol 2023; 222:e202303138. [PMID: 37707499 PMCID: PMC10501387 DOI: 10.1083/jcb.202303138] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2023] [Revised: 07/14/2023] [Accepted: 08/28/2023] [Indexed: 09/15/2023] Open
Abstract
Astrocytes control the formation of specific synaptic circuits via cell adhesion and secreted molecules. Astrocyte synaptogenic functions are dependent on the establishment of their complex morphology. However, it is unknown if distinct neuronal cues differentially regulate astrocyte morphogenesis. δ-Catenin was previously thought to be a neuron-specific protein that regulates dendrite morphology. We found δ-catenin is also highly expressed by astrocytes and required both in astrocytes and neurons for astrocyte morphogenesis. δ-Catenin is hypothesized to mediate transcellular interactions through the cadherin family of cell adhesion proteins. We used structural modeling and biochemical analyses to reveal that δ-catenin interacts with the N-cadherin juxtamembrane domain to promote N-cadherin surface expression. An autism-linked δ-catenin point mutation impaired N-cadherin cell surface expression and reduced astrocyte complexity. In the developing mouse cortex, only lower-layer cortical neurons express N-cadherin. Remarkably, when we silenced astrocytic N-cadherin throughout the cortex, only lower-layer astrocyte morphology was disrupted. These findings show that δ-catenin controls astrocyte-neuron cadherin interactions that regulate layer-specific astrocyte morphogenesis.
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Affiliation(s)
- Christabel Xin Tan
- Department of Cell Biology, Duke University School of Medicine, Durham, NC, USA
| | | | - Evelyn J. Hardin
- Department of Cell Biology, Duke University School of Medicine, Durham, NC, USA
| | - Kristina Sakers
- Department of Cell Biology, Duke University School of Medicine, Durham, NC, USA
| | - Ryan Baumert
- Department of Cell Biology, Duke University School of Medicine, Durham, NC, USA
| | - Juan J. Ramirez
- Department of Neurobiology, Duke University School of Medicine, Durham, NC, USA
| | - Justin T. Savage
- Department of Neurobiology, Duke University School of Medicine, Durham, NC, USA
| | - Cagla Eroglu
- Department of Cell Biology, Duke University School of Medicine, Durham, NC, USA
- Department of Neurobiology, Duke University School of Medicine, Durham, NC, USA
- Howard Hughes Medical Institute, Duke University School of Medicine, Durham, NC, USA
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4
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Kupai A, Nakahara H, Voss KM, Hirano MS, Rodriguez A, Lackey DL, Murayama JF, Mathieson CJ, Shan B, Horton EC, Curtis GH, Huang J, Hille MB. Phosphorylation of serine residues S252, S268/S269, and S879 in p120 catenin activates migration of presomitic mesoderm in gastrulating zebrafish embryos. Dev Dyn 2022; 251:1952-1967. [PMID: 35706088 DOI: 10.1002/dvdy.508] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2021] [Revised: 04/15/2022] [Accepted: 05/26/2022] [Indexed: 01/30/2023] Open
Abstract
BACKGROUND Cadherin-associated protein p120 catenin regulates cell adhesion and migration in cell cultures and is required for axial elongation in embryos. Its roles in adhesion and cell migration are regulated by phosphorylation. We determined the effects of phosphorylation of six serine and three threonine residues in p120 catenin during zebrafish (Danio rerio) embryogenesis. RESULTS We knocked down endogenous p120 catenin-δ1 with an antisense RNA-splice-site morpholino (Sp-MO) causing defects in axis elongation. These defects were rescued by co-injections of mRNAs for wildtype mouse p120 catenin-δ1-3A or various mutated forms. Several mRNAs containing serine or threonine codons singly or doubly mutated to phosphomimetic glutamic acid rescued, and some nonphosphorylatable mutants did not. CONCLUSIONS We discovered that phosphorylation of serine residue S252 or S879 is required for convergent extension of zebrafish embryos, since rescue occurred only when these residues were mutated to glutamic acid. In addition, the phosphorylation of either S268 or S269 is required, not both, consistent with the presence of only a single one of these residues in two isoforms of zebrafish and Xenopus laevis. In summary, phosphorylation of multiple serine and threonine residues of p120 catenin activates migration of presomitic mesoderm of zebrafish embryos facilitating elongation of the dorsal axis.
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Affiliation(s)
- Ariana Kupai
- Department of Biology, University of Washington, Seattle, Washington, USA.,Van Andel Institute, Grand Rapids, Michigan, USA
| | - Hiroko Nakahara
- Department of Biology, University of Washington, Seattle, Washington, USA
| | - Kathleen M Voss
- Department of Biology, University of Washington, Seattle, Washington, USA.,Center for Innate Immunity and Immune Disease, Department of Immunology, University of Washington School of Medicine, Seattle, Washington, USA
| | - Matthew S Hirano
- Department of Biology, University of Washington, Seattle, Washington, USA.,Department of Electrical and Computer Engineering, University of Washington, Seattle, Washington, USA
| | - Alexis Rodriguez
- Department of Biology, University of Washington, Seattle, Washington, USA.,Apex Systems, Santa Clara, California, USA
| | - Donna L Lackey
- Department of Biology, University of Washington, Seattle, Washington, USA.,PACT Pharma, 2 Corporate Drive, South San Francisco, California, USA
| | - James F Murayama
- Department of Biology, University of Washington, Seattle, Washington, USA.,DDS Private Practice, Mission Viejo, California, USA
| | - Chase J Mathieson
- Department of Biology, University of Washington, Seattle, Washington, USA.,Department of Integrative Biomedical and Diagnostic Science, Oregon Health and Science University, Portland, Oregon, USA
| | - Botao Shan
- Department of Biology, University of Washington, Seattle, Washington, USA.,Tulane University Medical School, New Orleans, Louisiana, USA
| | - Emma C Horton
- Department of Biology, University of Washington, Seattle, Washington, USA.,Developmental & Stem Cell Biology Program, University of California San Francisco, San Francisco, California, USA
| | - Grace H Curtis
- Department of Biology, University of Washington, Seattle, Washington, USA.,School of Biological Sciences, Center for Reproductive Biology, Washington State University, Pullman, Washington, USA
| | - Joyce Huang
- Department of Biology, University of Washington, Seattle, Washington, USA.,Department of Bioengineering, Henry Samueli School of Engineering and Applied Science, University of California at Los Angeles, Los Angeles, California, USA
| | - Merrill B Hille
- Department of Biology, University of Washington, Seattle, Washington, USA
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5
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Mandal S, Bandyopadhyay S, Tyagi K, Roy A. Recent advances in understanding the molecular role of phosphoinositide-specific phospholipase C gamma 1 as an emerging onco-driver and novel therapeutic target in human carcinogenesis. Biochim Biophys Acta Rev Cancer 2021; 1876:188619. [PMID: 34454048 DOI: 10.1016/j.bbcan.2021.188619] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2021] [Revised: 08/04/2021] [Accepted: 08/21/2021] [Indexed: 02/07/2023]
Abstract
Phosphoinositide metabolism is crucial intracellular signaling system that regulates a plethora of biological functions including mitogenesis, cell proliferation and division. Phospholipase C gamma 1 (PLCγ1) which belongs to phosphoinositide-specific phospholipase C (PLC) family, is activated by many extracellular stimuli including hormones, neurotransmitters, growth factors and modulates several cellular and physiological functions necessary for tumorigenesis such as cell survival, migration, invasion and angiogenesis by generating inositol 1,4,5-triphosphate (IP3) and diacylglycerol (DAG) via hydrolysis of phosphatidylinositol 4,5-biphosphate (PIP2). Cancer remains as a leading cause of global mortality and aberrant expression and regulation of PLCγ1 is linked to a plethora of deadly human cancers including carcinomas of the breast, lung, pancreas, stomach, prostate and ovary. Although PLCγ1 cross-talks with many onco-drivers and signaling circuits including PI3K, AKT, HIF1-α and RAF/MEK/ERK cascade, its precise role in carcinogenesis is not completely understood. This review comprehensively discussed the status quo of this ubiquitously expressed phospholipase as a tumor driver and highlighted its significance as a novel therapeutic target in cancer. Furthermore, we have highlighted the significance of somatic driver mutations in PLCG1 gene and molecular roles of PLCγ1 in several major human cancers, a knowledgebase that can be utilized to develop novel, isoform-specific small molecule inhibitors of PLCγ1.
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Affiliation(s)
- Supratim Mandal
- Department of Microbiology, University of Kalyani, Kalyani, Nadia, West Bengal 741235, India.
| | - Shrabasti Bandyopadhyay
- Department of Microbiology, University of Kalyani, Kalyani, Nadia, West Bengal 741235, India
| | - Komal Tyagi
- Amity Institute of Molecular Medicine & Stem Cell Research, Amity University, Sector 125, Noida, Uttar Pradesh 201303, India
| | - Adhiraj Roy
- Amity Institute of Molecular Medicine & Stem Cell Research, Amity University, Sector 125, Noida, Uttar Pradesh 201303, India.
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6
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Jorgenson LM, Olson-Wood MG, Rucks EA. Shifting proteomes: limitations in using the BioID proximity labeling system to study SNARE protein trafficking during infection with intracellular pathogens. Pathog Dis 2021; 79:ftab039. [PMID: 34323972 PMCID: PMC8379010 DOI: 10.1093/femspd/ftab039] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2021] [Accepted: 07/25/2021] [Indexed: 11/12/2022] Open
Abstract
We hypothesize that intracellular trafficking pathways are altered in chlamydial infected cells to maximize the ability of Chlamydia to scavenge nutrients while not overtly stressing the host cell. Previous data demonstrated the importance of two eukaryotic SNARE proteins, VAMP4 and syntaxin 10 (Stx10), in chlamydial growth and development. Although, the mechanism for these effects is still unknown. To interrogate whether chlamydial infection altered these proteins' networks, we created BirA*-VAMP4 and BirA*-Stx10 fusion constructs to use the BioID proximity labeling system. While we identified a novel eukaryotic protein-protein interaction between Stx10 and VAPB, we also identified caveats in using the BioID system to study the impact of infection by an obligate intracellular pathogen on SNARE protein networks. The addition of the BirA* altered the localization of VAMP4 and Stx10 during infection with Chlamydia trachomatis serovars L2 and D and Coxiella burnetii Nine Mile Phase II. We also discovered that BirA* traffics to and biotinylates Coxiella-containing vacuoles and, in general, has a propensity for labeling membrane or membrane-associated proteins. While the BioID system identified a novel association for Stx10, it is not a reliable methodology to examine intracellular trafficking pathway dynamics during infection with intracellular pathogens.
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Affiliation(s)
- Lisa M Jorgenson
- Department of Pathology and Microbiology, University of Nebraska Medical Center, Durham Research Center II, 985900 Nebraska Medical Center, Omaha, NE 68198-5900, USA
| | - Macy G Olson-Wood
- Department of Pathology and Microbiology, University of Nebraska Medical Center, Durham Research Center II, 985900 Nebraska Medical Center, Omaha, NE 68198-5900, USA
| | - Elizabeth A Rucks
- Department of Pathology and Microbiology, University of Nebraska Medical Center, Durham Research Center II, 985900 Nebraska Medical Center, Omaha, NE 68198-5900, USA
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7
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Alharatani R, Ververi A, Beleza-Meireles A, Ji W, Mis E, Patterson QT, Griffin JN, Bhujel N, Chang CA, Dixit A, Konstantino M, Healy C, Hannan S, Neo N, Cash A, Li D, Bhoj E, Zackai EH, Cleaver R, Baralle D, McEntagart M, Newbury-Ecob R, Scott R, Hurst JA, Au PYB, Hosey MT, Khokha M, Marciano DK, Lakhani SA, Liu KJ. Novel truncating mutations in CTNND1 cause a dominant craniofacial and cardiac syndrome. Hum Mol Genet 2021; 29:1900-1921. [PMID: 32196547 PMCID: PMC7372553 DOI: 10.1093/hmg/ddaa050] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2020] [Revised: 03/12/2020] [Accepted: 03/17/2020] [Indexed: 12/18/2022] Open
Abstract
CTNND1 encodes the p120-catenin (p120) protein, which has a wide range of functions, including the maintenance of cell–cell junctions, regulation of the epithelial-mesenchymal transition and transcriptional signalling. Due to advances in next-generation sequencing, CTNND1 has been implicated in human diseases including cleft palate and blepharocheilodontic (BCD) syndrome albeit only recently. In this study, we identify eight novel protein-truncating variants, six de novo, in 13 participants from nine families presenting with craniofacial dysmorphisms including cleft palate and hypodontia, as well as congenital cardiac anomalies, limb dysmorphologies and neurodevelopmental disorders. Using conditional deletions in mice as well as CRISPR/Cas9 approaches to target CTNND1 in Xenopus, we identified a subset of phenotypes that can be linked to p120-catenin in epithelial integrity and turnover, and additional phenotypes that suggest mesenchymal roles of CTNND1. We propose that CTNND1 variants have a wider developmental role than previously described and that variations in this gene underlie not only cleft palate and BCD but may be expanded to a broader velocardiofacial-like syndrome.
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Affiliation(s)
- Reham Alharatani
- Centre for Craniofacial and Regenerative Biology, Faculty of Dentistry, Oral and Craniofacial Sciences, King's College London, London SE1 9RT, UK.,Paediatric Dentistry, Centre of Oral, Clinical and Translational Science, Faculty of Dentistry, Oral and Craniofacial Sciences, King's College London, London SE5 9RS, UK
| | - Athina Ververi
- Department of Clinical Genetics, Great Ormond Street Hospital Trust, London WC1N 3JH, UK
| | - Ana Beleza-Meireles
- Centre for Craniofacial and Regenerative Biology, Faculty of Dentistry, Oral and Craniofacial Sciences, King's College London, London SE1 9RT, UK.,Department of Clinical Genetics, Guy's and St. Thomas' NHS Foundation Trust, London SE1 9RT, UK
| | - Weizhen Ji
- Pediatric Genomics Discovery Program, Department of Pediatrics, Yale University School of Medicine, New Haven, CT 06520, USA
| | - Emily Mis
- Pediatric Genomics Discovery Program, Department of Pediatrics, Yale University School of Medicine, New Haven, CT 06520, USA
| | - Quinten T Patterson
- Departments of Internal Medicine and Cell Biology, University of Texas Southwestern Medical Center, Dallas, TX 75390-8856, USA
| | - John N Griffin
- Centre for Craniofacial and Regenerative Biology, Faculty of Dentistry, Oral and Craniofacial Sciences, King's College London, London SE1 9RT, UK.,Pediatric Genomics Discovery Program, Departments of Genetics and Pediatrics, Yale University School of Medicine, New Haven, CT 06520, USA
| | - Nabina Bhujel
- South Thames Cleft Service, Guy's and St. Thomas' NHS Foundation Trust, London SE1 7EH, UK
| | - Caitlin A Chang
- Department of Medical Genetics, Cumming School of Medicine, Alberta Children's Hospital Research Institute, University of Calgary, AB, Canada
| | - Abhijit Dixit
- Nottingham University Hospitals NHS Trust, Nottingham NG5 1PB, UK
| | - Monica Konstantino
- Pediatric Genomics Discovery Program, Department of Pediatrics, Yale University School of Medicine, New Haven, CT 06520, USA
| | - Christopher Healy
- Centre for Craniofacial and Regenerative Biology, Faculty of Dentistry, Oral and Craniofacial Sciences, King's College London, London SE1 9RT, UK
| | - Sumayyah Hannan
- Centre for Craniofacial and Regenerative Biology, Faculty of Dentistry, Oral and Craniofacial Sciences, King's College London, London SE1 9RT, UK
| | - Natsuko Neo
- Centre for Craniofacial and Regenerative Biology, Faculty of Dentistry, Oral and Craniofacial Sciences, King's College London, London SE1 9RT, UK.,Tokyo Medical and Dental University, Tokyo, Japan
| | - Alex Cash
- South Thames Cleft Service, Guy's and St. Thomas' NHS Foundation Trust, London SE1 7EH, UK
| | - Dong Li
- Center for Applied Genomics, Children's Hospital of Philadelphia, Philadelphia, PA 19104, USA
| | - Elizabeth Bhoj
- Department of Pediatrics, Division of Human Genetics, Children's Hospital of Philadelphia, Philadelphia, PA 19104, USA
| | - Elaine H Zackai
- Department of Pediatrics, Division of Human Genetics, Children's Hospital of Philadelphia, Philadelphia, PA 19104, USA
| | - Ruth Cleaver
- Peninsula Clinical Genetics Service, Royal Devon and Exeter NHS Foundation Trust, Exeter EX2 5DW, UK
| | - Diana Baralle
- Human Development and Health, Faculty of Medicine, University of Southampton, Southampton SO17 1BJ, UK
| | - Meriel McEntagart
- Department of Clinical Genetics, St George's Hospital, London SW17 0RE, UK
| | - Ruth Newbury-Ecob
- Clinical Genetics, University Hospital Bristol NHS Foundation Trust, Bristol BS2 8EG, UK
| | - Richard Scott
- Department of Clinical Genetics, Great Ormond Street Hospital Trust, London WC1N 3JH, UK
| | - Jane A Hurst
- Department of Clinical Genetics, Great Ormond Street Hospital Trust, London WC1N 3JH, UK
| | - Ping Yee Billie Au
- Department of Medical Genetics, Cumming School of Medicine, Alberta Children's Hospital Research Institute, University of Calgary, AB, Canada
| | - Marie Therese Hosey
- Paediatric Dentistry, Centre of Oral, Clinical and Translational Science, Faculty of Dentistry, Oral and Craniofacial Sciences, King's College London, London SE5 9RS, UK
| | - Mustafa Khokha
- Pediatric Genomics Discovery Program, Departments of Genetics and Pediatrics, Yale University School of Medicine, New Haven, CT 06520, USA
| | - Denise K Marciano
- Departments of Internal Medicine and Cell Biology, University of Texas Southwestern Medical Center, Dallas, TX 75390-8856, USA
| | - Saquib A Lakhani
- Pediatric Genomics Discovery Program, Department of Pediatrics, Yale University School of Medicine, New Haven, CT 06520, USA
| | - Karen J Liu
- Centre for Craniofacial and Regenerative Biology, Faculty of Dentistry, Oral and Craniofacial Sciences, King's College London, London SE1 9RT, UK
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8
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Liu JJ, Chiu YT, Chen C, Huang P, Mann M, Liu-Chen LY. Pharmacological and phosphoproteomic approaches to roles of protein kinase C in kappa opioid receptor-mediated effects in mice. Neuropharmacology 2020; 181:108324. [PMID: 32976891 DOI: 10.1016/j.neuropharm.2020.108324] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2020] [Revised: 09/10/2020] [Accepted: 09/15/2020] [Indexed: 12/17/2022]
Abstract
Kappa opioid receptor (KOR) agonists possess adverse dysphoric and psychotomimetic effects, thus limiting their applications as non-addictive anti-pruritic and analgesic agents. Here, we showed that protein kinase C (PKC) inhibition preserved the beneficial antinociceptive and antipruritic effects of KOR agonists, but attenuated the adverse condition placed aversion (CPA), sedation, and motor incoordination in mice. Using a large-scale mass spectrometry-based phosphoproteomics of KOR-mediated signaling in the mouse brain, we observed PKC-dependent modulation of G protein-coupled receptor kinases and Wnt pathways at 5 min; stress signaling, cytoskeleton, mTOR signaling and receptor phosphorylation, including cannabinoid receptor CB1 at 30 min. We further demonstrated that inhibition of CB1 attenuated KOR-mediated CPA. Our results demonstrated the feasibility of in vivo biochemical dissection of signaling pathways that lead to side effects.
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Affiliation(s)
- Jeffrey J Liu
- Department of Proteomics and Signal Transduction, Max Planck Institute of Biochemistry, 82152, Martinsried, Germany
| | - Yi-Ting Chiu
- Center for Substance Abuse Research & Department of Pharmacology, Temple University Lewis Katz School of Medicine, Philadelphia, PA, 19140, USA
| | - Chongguang Chen
- Center for Substance Abuse Research & Department of Pharmacology, Temple University Lewis Katz School of Medicine, Philadelphia, PA, 19140, USA
| | - Peng Huang
- Center for Substance Abuse Research & Department of Pharmacology, Temple University Lewis Katz School of Medicine, Philadelphia, PA, 19140, USA
| | - Matthias Mann
- Department of Proteomics and Signal Transduction, Max Planck Institute of Biochemistry, 82152, Martinsried, Germany
| | - Lee-Yuan Liu-Chen
- Center for Substance Abuse Research & Department of Pharmacology, Temple University Lewis Katz School of Medicine, Philadelphia, PA, 19140, USA.
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9
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Mendonsa AM, Bandyopadhyay C, Gumbiner BM. p120-catenin phosphorylation status alters E-cadherin mediated cell adhesion and ability of tumor cells to metastasize. PLoS One 2020; 15:e0235337. [PMID: 32589661 PMCID: PMC7319294 DOI: 10.1371/journal.pone.0235337] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2019] [Accepted: 06/12/2020] [Indexed: 01/06/2023] Open
Abstract
p120-catenin is considered to be a tumor suppressor because it stabilizes E-cadherin levels at the cell surface. p120-catenin phosphorylation is increased in several types of cancer, but the role of phosphorylation in cancer is unknown. The phosphorylation state of p120-catenin is important in controlling E-cadherin homophilic binding strength which maintains epithelial junctions. Because decreased cell-cell adhesion is associated with increased cancer metastasis we hypothesize that p120-catenin phosphorylation at specific Serine and Threonine residues alters the E-cadherin binding strength between tumor cells and thereby affect the ability of tumor cells to leave the primary tumor and metastasize to distant sites. In this study we show that expression of the p120-catenin phosphorylation dead mutant, by converting six Serine and Threonine sites to Alanine, leads to enhanced E-cadherin adhesive binding strength in tumor cells. We observed a decrease in the ability of tumor cells expressing the p120-catenin phosphorylation mutant to migrate and invade using in-vitro models of cancer progression. Further, tumor cells expressing the phosphorylation mutant form of p120-catenin demonstrated a decrease in ability to metastasize to the lungs using an in-vivo orthotopic mammary fat pad injection model of breast cancer development and metastasis. This suggests that regulation of p120-catenin phosphorylation at the cell surface is important in mediating cell-adhesion, thereby impacting cancer progression and metastasis.
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Affiliation(s)
- Alisha M. Mendonsa
- Center for Developmental Biology and Regenerative Medicine, Seattle Children’s Research Institute, Seattle, Washington, United States of America
| | - Chirosree Bandyopadhyay
- Center for Developmental Biology and Regenerative Medicine, Seattle Children’s Research Institute, Seattle, Washington, United States of America
| | - Barry M. Gumbiner
- Center for Developmental Biology and Regenerative Medicine, Seattle Children’s Research Institute, Seattle, Washington, United States of America
- Department of Biochemistry, University of Washington, Seattle, Washington, United States of America
- Department of Pediatrics, University of Washington, Seattle, Washington, United States of America
- * E-mail:
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10
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Li L, Ji S, Shrestha C, Jiang Y, Liao L, Xu F, Liu Z, Bikle DD, Xie Z. p120-catenin suppresses proliferation and tumor growth of oral squamous cell carcinoma via inhibiting nuclear phospholipase C-γ1 signaling. J Cell Physiol 2020; 235:9399-9413. [PMID: 32356317 DOI: 10.1002/jcp.29744] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2019] [Revised: 04/12/2020] [Accepted: 04/18/2020] [Indexed: 12/16/2022]
Abstract
p120-catenin (p120) serves as a stabilizer of the calcium-dependent cadherin-catenin complex and loss of p120 expression has been observed in several types of human cancers. The p120-dependent E-cadherin-β-catenin complex has been shown to mediate calcium-induced keratinocyte differentiation via inducing activation of plasma membrane phospholipase C-γ1 (PLC-γ1). On the other hand, PLC-γ1 has been shown to interact with phosphatidylinositol 3-kinase enhancer in the nucleus and plays a critical role in epidermal growth factor-induced proliferation of oral squamous cell carcinoma (OSCC) cells. To determine whether p120 suppresses OSCC proliferation and tumor growth via inhibiting PLC-γ1, we examined effects of p120 knockdown or p120 and PLC-γ1 double knockdown on proliferation of cultured OSCC cells and tumor growth in xenograft OSCC in mice. The results showed that knockdown of p120 reduced levels of PLC-γ1 in the plasma membrane and increased levels of PLC-γ1 and its signaling in the nucleus in OSCC cells and OSCC cell proliferation as well as xenograft OSCC tumor growth. However, double knockdown of p120 and PLC-γ1 or knockdown of PLC-γ1 alone did not have any effect. Immunohistochemical analysis of OSCC tissue from patients showed a lower expression level of p120 and a higher expression level of PLC-γ1 compared with that of adjacent noncancerous tissue. These data indicate that p120 suppresses OSCC cell proliferation and tumor growth by inhibiting signaling mediated by nuclear PLC-γ1.
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Affiliation(s)
- Lusha Li
- National Clinical Research Center for Metabolic Diseases, Hunan Provincial Key Laboratory of Metabolic Bone Diseases, Institute of Metabolism and Endocrinology, and Department of Metabolism and Endocrinology, The Second Xiangya Hospital of Central South University, Changsha, Hunan, China
| | - Shangli Ji
- National Clinical Research Center for Metabolic Diseases, Hunan Provincial Key Laboratory of Metabolic Bone Diseases, Institute of Metabolism and Endocrinology, and Department of Metabolism and Endocrinology, The Second Xiangya Hospital of Central South University, Changsha, Hunan, China
| | - Chandrama Shrestha
- National Clinical Research Center for Metabolic Diseases, Hunan Provincial Key Laboratory of Metabolic Bone Diseases, Institute of Metabolism and Endocrinology, and Department of Metabolism and Endocrinology, The Second Xiangya Hospital of Central South University, Changsha, Hunan, China
| | - Yi Jiang
- Department of Pathology, The Second Xiangya Hospital of Central South University, Changsha, Hunan, China
| | - Liyan Liao
- Department of Pathology, The Second Xiangya Hospital of Central South University, Changsha, Hunan, China
| | - Feng Xu
- National Clinical Research Center for Metabolic Diseases, Hunan Provincial Key Laboratory of Metabolic Bone Diseases, Institute of Metabolism and Endocrinology, and Department of Metabolism and Endocrinology, The Second Xiangya Hospital of Central South University, Changsha, Hunan, China
| | - Zhenming Liu
- National Clinical Research Center for Metabolic Diseases, Hunan Provincial Key Laboratory of Metabolic Bone Diseases, Institute of Metabolism and Endocrinology, and Department of Metabolism and Endocrinology, The Second Xiangya Hospital of Central South University, Changsha, Hunan, China
| | - Daniel D Bikle
- Endocrine Unit, Veterans Affairs Medical Center, University of California San Francisco, San Francisco, California
| | - Zhongjian Xie
- National Clinical Research Center for Metabolic Diseases, Hunan Provincial Key Laboratory of Metabolic Bone Diseases, Institute of Metabolism and Endocrinology, and Department of Metabolism and Endocrinology, The Second Xiangya Hospital of Central South University, Changsha, Hunan, China
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11
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Méant A, Gao B, Lavoie G, Nourreddine S, Jung F, Aubert L, Tcherkezian J, Gingras AC, Roux PP. Proteomic Analysis Reveals a Role for RSK in p120-catenin Phosphorylation and Melanoma Cell-Cell Adhesion. Mol Cell Proteomics 2020; 19:50-64. [PMID: 31678930 PMCID: PMC6944238 DOI: 10.1074/mcp.ra119.001811] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2019] [Indexed: 01/15/2023] Open
Abstract
The RAS/mitogen-activated protein kinase (MAPK) signaling pathway regulates various biological functions, including cell survival, proliferation and migration. This pathway is frequently deregulated in cancer, including melanoma, which is the most aggressive form of skin cancer. RSK (p90 ribosomal S6 kinase) is a MAPK-activated protein kinase required for melanoma growth and proliferation, but relatively little is known about its function and the nature of its cellular partners. In this study, we used a proximity-based labeling approach to identify RSK proximity partners in cells. We identified many potential RSK-interacting proteins, including p120ctn (p120-catenin), which is an essential component of adherens junction (AJ). We found that RSK phosphorylates p120ctn on Ser320, which appears to be constitutively phosphorylated in melanoma cells. We also found that RSK inhibition increases melanoma cell-cell adhesion, suggesting that constitutive RAS/MAPK signaling negatively regulates AJ integrity. Together, our results indicate that RSK plays an important role in the regulation of melanoma cell-cell adhesion.
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Affiliation(s)
- Antoine Méant
- Institute for Research in Immunology and Cancer (IRIC), Université de Montréal, Montréal, Québec, Canada
| | - Beichen Gao
- Institute for Research in Immunology and Cancer (IRIC), Université de Montréal, Montréal, Québec, Canada
| | - Geneviève Lavoie
- Institute for Research in Immunology and Cancer (IRIC), Université de Montréal, Montréal, Québec, Canada
| | - Sami Nourreddine
- Institute for Research in Immunology and Cancer (IRIC), Université de Montréal, Montréal, Québec, Canada
| | - Flora Jung
- Institute for Research in Immunology and Cancer (IRIC), Université de Montréal, Montréal, Québec, Canada
| | - Léo Aubert
- Institute for Research in Immunology and Cancer (IRIC), Université de Montréal, Montréal, Québec, Canada
| | - Joseph Tcherkezian
- Institute for Research in Immunology and Cancer (IRIC), Université de Montréal, Montréal, Québec, Canada
| | - Anne-Claude Gingras
- Lunenfeld-Tanenbaum Research Institute, Sinai Health System, Toronto, Canada; Department of Molecular Genetics, University of Toronto, Toronto, Canada
| | - Philippe P Roux
- Institute for Research in Immunology and Cancer (IRIC), Université de Montréal, Montréal, Québec, Canada; Department of Pathology and Cell Biology, Faculty of Medicine, Université de Montréal, Montréal, Québec, Canada.
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12
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El Amrani M, Corfiotti F, Corvaisier M, Vasseur R, Fulbert M, Skrzypczyk C, Deshorgues AC, Gnemmi V, Tulasne D, Lahdaoui F, Vincent A, Pruvot FR, Van Seuningen I, Huet G, Truant S. Gemcitabine-induced epithelial-mesenchymal transition-like changes sustain chemoresistance of pancreatic cancer cells of mesenchymal-like phenotype. Mol Carcinog 2019; 58:1985-1997. [PMID: 31373074 DOI: 10.1002/mc.23090] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2019] [Revised: 07/11/2019] [Accepted: 07/16/2019] [Indexed: 02/06/2023]
Abstract
Growing body of evidence suggests that epithelial-mesenchymal transition (EMT) is a critical process in tumor progression and chemoresistance in pancreatic cancer (PC). The aim of this study was to analyze the role of EMT-like changes in acquisition of resistance to gemcitabine in pancreatic cells of the mesenchymal or epithelial phenotype. Therefore, chemoresistant BxPC-3, Capan-2, Panc-1, and MiaPaca-2 cells were selected by chronic exposure to increasing concentrations of gemcitabine. We show that gemcitabine-resistant Panc-1 and MiaPaca-2 cells of mesenchymal-like phenotype undergo further EMT-like molecular changes mediated by ERK-ZEB-1 pathway, and that inhibition of ERK1/2 phosphorylation or ZEB-1 expression resulted in a decrease in chemoresistance. Conversely, gemcitabine-resistant BxPC-3 and Capan-2 cells of epithelial-like phenotype did not show such typical EMT-like molecular changes although the expression of the tight junction marker occludin could be found decreased. In pancreatic cancer patients, high ZEB-1 expression was associated with tumor invasion and tumor budding. In addition, tumor budding was essentially observed in patients treated with neoadjuvant chemotherapy. These findings support the notion that gemcitabine treatment induces EMT-like changes that sustain invasion and chemoresistance in PC cells.
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Affiliation(s)
- Mehdi El Amrani
- Department of Digestive Surgery and Transplantation, Université de Lille, Inserm, CHU Lille, UMR-S 1172, Lille, France.,Department of Digestive Surgery and Transplantation, CHU Lille, Lille, France
| | - François Corfiotti
- Department of Digestive Surgery and Transplantation, Université de Lille, Inserm, CHU Lille, UMR-S 1172, Lille, France.,Department of Digestive Surgery and Transplantation, CHU Lille, Lille, France
| | - Matthieu Corvaisier
- Department of Digestive Surgery and Transplantation, Université de Lille, Inserm, CHU Lille, UMR-S 1172, Lille, France
| | - Romain Vasseur
- Department of Digestive Surgery and Transplantation, Université de Lille, Inserm, CHU Lille, UMR-S 1172, Lille, France
| | - Maxence Fulbert
- Department of Digestive Surgery and Transplantation, Université de Lille, Inserm, CHU Lille, UMR-S 1172, Lille, France.,Department of Digestive Surgery and Transplantation, CHU Lille, Lille, France
| | - Cécile Skrzypczyk
- Department of Digestive Surgery and Transplantation, Université de Lille, Inserm, CHU Lille, UMR-S 1172, Lille, France.,Department of Digestive Surgery and Transplantation, CHU Lille, Lille, France
| | - Anne-Claire Deshorgues
- Department of Digestive Surgery and Transplantation, Université de Lille, Inserm, CHU Lille, UMR-S 1172, Lille, France.,Department of Digestive Surgery and Transplantation, CHU Lille, Lille, France
| | - Viviane Gnemmi
- Department of Digestive Surgery and Transplantation, Université de Lille, Inserm, CHU Lille, UMR-S 1172, Lille, France.,Department of Pathology, Center of Biology-Pathology, CHU Lille, Lille, France
| | - David Tulasne
- Institut Pasteur de Lille, UMR 8161-M3T, Mechanisms of Tumorigenesis and Target Therapies, Université de Lille, CNRS, Lille, France
| | - Fatima Lahdaoui
- Department of Digestive Surgery and Transplantation, Université de Lille, Inserm, CHU Lille, UMR-S 1172, Lille, France
| | - Audrey Vincent
- Department of Digestive Surgery and Transplantation, Université de Lille, Inserm, CHU Lille, UMR-S 1172, Lille, France
| | - François-René Pruvot
- Department of Digestive Surgery and Transplantation, Université de Lille, Inserm, CHU Lille, UMR-S 1172, Lille, France.,Department of Digestive Surgery and Transplantation, CHU Lille, Lille, France
| | - Isabelle Van Seuningen
- Department of Digestive Surgery and Transplantation, Université de Lille, Inserm, CHU Lille, UMR-S 1172, Lille, France
| | - Guillemette Huet
- Department of Digestive Surgery and Transplantation, Université de Lille, Inserm, CHU Lille, UMR-S 1172, Lille, France
| | - Stéphanie Truant
- Department of Digestive Surgery and Transplantation, Université de Lille, Inserm, CHU Lille, UMR-S 1172, Lille, France.,Department of Digestive Surgery and Transplantation, CHU Lille, Lille, France
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13
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Fearnley GW, Young KA, Edgar JR, Antrobus R, Hay IM, Liang WC, Martinez-Martin N, Lin W, Deane JE, Sharpe HJ. The homophilic receptor PTPRK selectively dephosphorylates multiple junctional regulators to promote cell-cell adhesion. eLife 2019; 8:44597. [PMID: 30924770 PMCID: PMC6440744 DOI: 10.7554/elife.44597] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2018] [Accepted: 03/23/2019] [Indexed: 12/20/2022] Open
Abstract
Cell-cell communication in multicellular organisms depends on the dynamic and reversible phosphorylation of protein tyrosine residues. The receptor-linked protein tyrosine phosphatases (RPTPs) receive cues from the extracellular environment and are well placed to influence cell signaling. However, the direct events downstream of these receptors have been challenging to resolve. We report here that the homophilic receptor PTPRK is stabilized at cell-cell contacts in epithelial cells. By combining interaction studies, quantitative tyrosine phosphoproteomics, proximity labeling and dephosphorylation assays we identify high confidence PTPRK substrates. PTPRK directly and selectively dephosphorylates at least five substrates, including Afadin, PARD3 and δ-catenin family members, which are all important cell-cell adhesion regulators. In line with this, loss of PTPRK phosphatase activity leads to disrupted cell junctions and increased invasive characteristics. Thus, identifying PTPRK substrates provides insight into its downstream signaling and a potential molecular explanation for its proposed tumor suppressor function.
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Affiliation(s)
- Gareth W Fearnley
- Cambridge Institute for Medical Research, University of Cambridge, Cambridge, United Kingdom
| | - Katherine A Young
- Cambridge Institute for Medical Research, University of Cambridge, Cambridge, United Kingdom
| | - James R Edgar
- Cambridge Institute for Medical Research, University of Cambridge, Cambridge, United Kingdom.,Department of Pathology, University of Cambridge, Cambridge, United Kingdom
| | - Robin Antrobus
- Cambridge Institute for Medical Research, University of Cambridge, Cambridge, United Kingdom
| | - Iain M Hay
- Cambridge Institute for Medical Research, University of Cambridge, Cambridge, United Kingdom
| | - Wei-Ching Liang
- Antibody Engineering Department, Genentech, South San Francisco, United States
| | - Nadia Martinez-Martin
- Microchemistry, Proteomics and Lipidomics Department, Genentech, South San Francisco, United States
| | - WeiYu Lin
- Antibody Engineering Department, Genentech, South San Francisco, United States
| | - Janet E Deane
- Cambridge Institute for Medical Research, University of Cambridge, Cambridge, United Kingdom
| | - Hayley J Sharpe
- Cambridge Institute for Medical Research, University of Cambridge, Cambridge, United Kingdom
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14
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Pal M, Bhattacharya S, Kalyan G, Hazra S. Cadherin profiling for therapeutic interventions in Epithelial Mesenchymal Transition (EMT) and tumorigenesis. Exp Cell Res 2018; 368:137-146. [DOI: 10.1016/j.yexcr.2018.04.014] [Citation(s) in RCA: 58] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2017] [Revised: 03/15/2018] [Accepted: 04/13/2018] [Indexed: 12/14/2022]
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15
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Xie Z, Tang Y, Man MQ, Shrestha C, Bikle DD. p120-catenin is required for regulating epidermal proliferation, differentiation, and barrier function. J Cell Physiol 2018; 234:427-432. [PMID: 29923340 DOI: 10.1002/jcp.26535] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2018] [Accepted: 02/06/2018] [Indexed: 12/21/2022]
Abstract
p120-catenin (p120) is an important regulator in the function and stability of E-cadherin. However, the role of p120 in the epidermis is unclear. Previous studies have shown that globally knockout of p120 caused increased epidermal proliferation but little changes in epidermal differentiation and permeability. In the present study, we generated a conditional knockout mouse model and examined epidermal proliferation, differentiation and permeability. The results showed that conditional knockout of p120 in the epidermis caused not only increased epidermal proliferation but also decreased epidermal differentiation and increased permeability. These data suggest that p120 is required for suppressing epidermal proliferation, promoting epidermal differentiation and maintaining permeability barrier function of the epidermis.
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Affiliation(s)
- Zhongjian Xie
- Department of Endocrinology and Metabolism, The Second Xiangya Hospital, Central South University, Changsha, Hunan, P.R. China.,Endocrine Unit, Veterans Affairs Medical Center, Northern California Institute for Research and Education and University of California, San Francisco, California.,Provincial Key Laboratory of Metabolic Bone Diseases, The Second Xiangya Hospital, Central South University, Changsha, Hunan, P.R. China
| | - Yuanyuan Tang
- Department of Endocrinology and Metabolism, The Second Xiangya Hospital, Central South University, Changsha, Hunan, P.R. China.,Provincial Key Laboratory of Metabolic Bone Diseases, The Second Xiangya Hospital, Central South University, Changsha, Hunan, P.R. China
| | - Mao-Qiang Man
- Dermatology Services, San Francisco Veterans Affairs Medical Center and University of California San Francisco, San Francisco, California
| | - Chandrama Shrestha
- Department of Endocrinology and Metabolism, The Second Xiangya Hospital, Central South University, Changsha, Hunan, P.R. China.,Provincial Key Laboratory of Metabolic Bone Diseases, The Second Xiangya Hospital, Central South University, Changsha, Hunan, P.R. China
| | - Daniel D Bikle
- Endocrine Unit, Veterans Affairs Medical Center, Northern California Institute for Research and Education and University of California, San Francisco, California
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16
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Bajrami I, Marlow R, van de Ven M, Brough R, Pemberton HN, Frankum J, Song F, Rafiq R, Konde A, Krastev DB, Menon M, Campbell J, Gulati A, Kumar R, Pettitt SJ, Gurden MD, Cardenosa ML, Chong I, Gazinska P, Wallberg F, Sawyer EJ, Martin LA, Dowsett M, Linardopoulos S, Natrajan R, Ryan CJ, Derksen PWB, Jonkers J, Tutt ANJ, Ashworth A, Lord CJ. E-Cadherin/ROS1 Inhibitor Synthetic Lethality in Breast Cancer. Cancer Discov 2018; 8:498-515. [PMID: 29610289 PMCID: PMC6296442 DOI: 10.1158/2159-8290.cd-17-0603] [Citation(s) in RCA: 74] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2017] [Revised: 12/12/2017] [Accepted: 01/23/2018] [Indexed: 12/22/2022]
Abstract
The cell adhesion glycoprotein E-cadherin (CDH1) is commonly inactivated in breast tumors. Precision medicine approaches that exploit this characteristic are not available. Using perturbation screens in breast tumor cells with CRISPR/Cas9-engineered CDH1 mutations, we identified synthetic lethality between E-cadherin deficiency and inhibition of the tyrosine kinase ROS1. Data from large-scale genetic screens in molecularly diverse breast tumor cell lines established that the E-cadherin/ROS1 synthetic lethality was not only robust in the face of considerable molecular heterogeneity but was also elicited with clinical ROS1 inhibitors, including foretinib and crizotinib. ROS1 inhibitors induced mitotic abnormalities and multinucleation in E-cadherin-defective cells, phenotypes associated with a defect in cytokinesis and aberrant p120 catenin phosphorylation and localization. In vivo, ROS1 inhibitors produced profound antitumor effects in multiple models of E-cadherin-defective breast cancer. These data therefore provide the preclinical rationale for assessing ROS1 inhibitors, such as the licensed drug crizotinib, in appropriately stratified patients.Significance: E-cadherin defects are common in breast cancer but are currently not targeted with a precision medicine approach. Our preclinical data indicate that licensed ROS1 inhibitors, including crizotinib, should be repurposed to target E-cadherin-defective breast cancers, thus providing the rationale for the assessment of these agents in molecularly stratified phase II clinical trials. Cancer Discov; 8(4); 498-515. ©2018 AACR.This article is highlighted in the In This Issue feature, p. 371.
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Affiliation(s)
- Ilirjana Bajrami
- The Breast Cancer Now Toby Robins Breast Cancer Research Centre, The Institute of Cancer Research, London, United Kingdom
- Cancer Research UK Gene Function Laboratory, The Institute of Cancer Research, London, United Kingdom
| | - Rebecca Marlow
- The Breast Cancer Now Research Unit, King's College London, London, United Kingdom
| | - Marieke van de Ven
- Mouse Clinic for Cancer and Aging (MCCA) Preclinical Intervention Unit, The Netherlands Cancer Institute, Amsterdam, the Netherlands
| | - Rachel Brough
- The Breast Cancer Now Toby Robins Breast Cancer Research Centre, The Institute of Cancer Research, London, United Kingdom
- Cancer Research UK Gene Function Laboratory, The Institute of Cancer Research, London, United Kingdom
| | - Helen N Pemberton
- The Breast Cancer Now Toby Robins Breast Cancer Research Centre, The Institute of Cancer Research, London, United Kingdom
- Cancer Research UK Gene Function Laboratory, The Institute of Cancer Research, London, United Kingdom
| | - Jessica Frankum
- The Breast Cancer Now Toby Robins Breast Cancer Research Centre, The Institute of Cancer Research, London, United Kingdom
- Cancer Research UK Gene Function Laboratory, The Institute of Cancer Research, London, United Kingdom
| | - Feifei Song
- The Breast Cancer Now Toby Robins Breast Cancer Research Centre, The Institute of Cancer Research, London, United Kingdom
- Cancer Research UK Gene Function Laboratory, The Institute of Cancer Research, London, United Kingdom
| | - Rumana Rafiq
- The Breast Cancer Now Toby Robins Breast Cancer Research Centre, The Institute of Cancer Research, London, United Kingdom
- Cancer Research UK Gene Function Laboratory, The Institute of Cancer Research, London, United Kingdom
| | - Asha Konde
- The Breast Cancer Now Toby Robins Breast Cancer Research Centre, The Institute of Cancer Research, London, United Kingdom
- Cancer Research UK Gene Function Laboratory, The Institute of Cancer Research, London, United Kingdom
| | - Dragomir B Krastev
- The Breast Cancer Now Toby Robins Breast Cancer Research Centre, The Institute of Cancer Research, London, United Kingdom
- Cancer Research UK Gene Function Laboratory, The Institute of Cancer Research, London, United Kingdom
| | - Malini Menon
- The Breast Cancer Now Toby Robins Breast Cancer Research Centre, The Institute of Cancer Research, London, United Kingdom
- Cancer Research UK Gene Function Laboratory, The Institute of Cancer Research, London, United Kingdom
| | - James Campbell
- The Breast Cancer Now Toby Robins Breast Cancer Research Centre, The Institute of Cancer Research, London, United Kingdom
- Cancer Research UK Gene Function Laboratory, The Institute of Cancer Research, London, United Kingdom
| | - Aditi Gulati
- The Breast Cancer Now Toby Robins Breast Cancer Research Centre, The Institute of Cancer Research, London, United Kingdom
- Cancer Research UK Gene Function Laboratory, The Institute of Cancer Research, London, United Kingdom
| | - Rahul Kumar
- The Breast Cancer Now Toby Robins Breast Cancer Research Centre, The Institute of Cancer Research, London, United Kingdom
- Cancer Research UK Gene Function Laboratory, The Institute of Cancer Research, London, United Kingdom
| | - Stephen J Pettitt
- The Breast Cancer Now Toby Robins Breast Cancer Research Centre, The Institute of Cancer Research, London, United Kingdom
- Cancer Research UK Gene Function Laboratory, The Institute of Cancer Research, London, United Kingdom
| | - Mark D Gurden
- The Breast Cancer Now Toby Robins Breast Cancer Research Centre, The Institute of Cancer Research, London, United Kingdom
| | - Marta Llorca Cardenosa
- The Breast Cancer Now Toby Robins Breast Cancer Research Centre, The Institute of Cancer Research, London, United Kingdom
- Biomedical Research Institute INCLIVA, Hospital Clinico Universitario Valencia, University of Valencia, Spain
| | - Irene Chong
- The Breast Cancer Now Toby Robins Breast Cancer Research Centre, The Institute of Cancer Research, London, United Kingdom
| | - Patrycja Gazinska
- The Breast Cancer Now Research Unit, King's College London, London, United Kingdom
| | - Fredrik Wallberg
- FACS Core Facility, The Institute of Cancer Research, London, United Kingdom
| | - Elinor J Sawyer
- Division of Cancer Studies, Guy's Hospital, King's College London, London, United Kingdom
| | - Lesley-Ann Martin
- The Breast Cancer Now Toby Robins Breast Cancer Research Centre, The Institute of Cancer Research, London, United Kingdom
| | - Mitch Dowsett
- The Breast Cancer Now Toby Robins Breast Cancer Research Centre, The Institute of Cancer Research, London, United Kingdom
| | - Spiros Linardopoulos
- The Breast Cancer Now Toby Robins Breast Cancer Research Centre, The Institute of Cancer Research, London, United Kingdom
- Cancer Research UK Cancer Therapeutics Unit, Division of Cancer Therapeutics, The Institute of Cancer Research, London, United Kingdom
| | - Rachael Natrajan
- The Breast Cancer Now Toby Robins Breast Cancer Research Centre, The Institute of Cancer Research, London, United Kingdom
| | - Colm J Ryan
- Systems Biology Ireland, University College Dublin, Dublin, Ireland
| | - Patrick W B Derksen
- Department of Pathology, University Medical Center Utrecht, Utrecht, the Netherlands
| | - Jos Jonkers
- Division of Molecular Pathology and Cancer Genomics Netherlands, The Netherlands Cancer Institute, Amsterdam, the Netherlands
| | - Andrew N J Tutt
- The Breast Cancer Now Toby Robins Breast Cancer Research Centre, The Institute of Cancer Research, London, United Kingdom
- The Breast Cancer Now Research Unit, King's College London, London, United Kingdom
| | - Alan Ashworth
- UCSF Helen Diller Family Comprehensive Cancer Center, San Francisco, California.
| | - Christopher J Lord
- The Breast Cancer Now Toby Robins Breast Cancer Research Centre, The Institute of Cancer Research, London, United Kingdom.
- Cancer Research UK Gene Function Laboratory, The Institute of Cancer Research, London, United Kingdom
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17
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Chung YC, Wei WC, Hung CN, Kuo JF, Hsu CP, Chang KJ, Chao WT. Rab11 collaborates E-cadherin to promote collective cell migration and indicates a poor prognosis in colorectal carcinoma. Eur J Clin Invest 2016; 46:1002-1011. [PMID: 27696383 DOI: 10.1111/eci.12683] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/15/2016] [Accepted: 09/28/2016] [Indexed: 12/16/2022]
Abstract
BACKGROUND Collective cell migration, whereby the cell-cell contacts such as E-cadherin are maintained during migration, has only recently emerged, and its detailed mechanisms are still unclear. In this study, the role of Rab11, which functions in recycling endosomes, and its relationship to E-cadherin in colorectal carcinoma were identified, and the role of Rab11 in the collective cell migration of colon cancer cells was clarified. MATERIALS AND METHODS A total of 107 patients with surgically resected colorectal carcinoma were enrolled in this immunohistochemical study. Relationships between the overexpression of Rab11 and E-cadherin and survival were evaluated. The cell biology of Rab11 overexpression or knock-down in HT-29 colon cells was studied. RESULTS The expression of Rab11 and E-cadherin was not correlated with the stage of cancer or lymph node metastasis. However, the overall survival was poor in the group of 67 patients with duo-positive Rab11 and E-cadherin expression compared to the group (40 patients) without dual-positive expression (P = 0·038). Rab11 was demonstrated to have a physical interaction with E-cadherin, and overexpression of Rab11 was found to promote collective cell migration through the increased distribution of E-cadherin, which enhanced cell-cell connections. In addition, Rac1 activation and matrix metalloproteinase-2 expressions were upregulated upon Rab11 expression. CONCLUSIONS This study demonstrated that Rab11 and E-cadherin expressions are indicators of poor survival time in colorectal carcinoma, but that Rab11 overexpression may contribute to increased collective cell invasion in colorectal carcinoma.
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Affiliation(s)
- Yuan-Chiang Chung
- Department of Surgery, Cheng-Ching General Hospital, Chung-Kang Branch, Taichung, Taiwan.,Department of Medicinal Botanicals and Health Applications, Da-Yeh University, Dacun, Changhua, Taiwan
| | - Wan-Chen Wei
- Department of Surgery, Cheng-Ching General Hospital, Chung-Kang Branch, Taichung, Taiwan.,Department of Life Science, Tunghai University, Taichung, Taiwan
| | - Chia-Nung Hung
- Department of Life Science, Tunghai University, Taichung, Taiwan
| | - Jen-Fang Kuo
- Department of Pathology, Cheng-Ching General Hospital, Chung-Kang Branch, Taichung, Taiwan
| | - Chih-Ping Hsu
- Department of Medical Laboratory Science and Biotechnology, Yuanpei University, HsinChu, Taiwan
| | - King-Jen Chang
- Department of Surgery, Cheng-Ching General Hospital, Chung-Kang Branch, Taichung, Taiwan.,Department of Surgery, Taiwan Adventist Hospital, Taipei, Taiwan
| | - Wei-Ting Chao
- Department of Life Science, Tunghai University, Taichung, Taiwan
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18
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Roberts BJ, Svoboda RA, Overmiller AM, Lewis JD, Kowalczyk AP, Mahoney MG, Johnson KR, Wahl JK. Palmitoylation of Desmoglein 2 Is a Regulator of Assembly Dynamics and Protein Turnover. J Biol Chem 2016; 291:24857-24865. [PMID: 27703000 DOI: 10.1074/jbc.m116.739458] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2016] [Revised: 09/08/2016] [Indexed: 01/09/2023] Open
Abstract
Desmosomes are prominent adhesive junctions present between many epithelial cells as well as cardiomyocytes. The mechanisms controlling desmosome assembly and remodeling in epithelial and cardiac tissue are poorly understood. We recently identified protein palmitoylation as a mechanism regulating desmosome dynamics. In this study, we have focused on the palmitoylation of the desmosomal cadherin desmoglein-2 (Dsg2) and characterized the role that palmitoylation of Dsg2 plays in its localization and stability in cultured cells. We identified two cysteine residues in the juxtamembrane (intracellular anchor) domain of Dsg2 that, when mutated, eliminate its palmitoylation. These cysteine residues are conserved in all four desmoglein family members. Although mutant Dsg2 localizes to endogenous desmosomes, there is a significant delay in its incorporation into junctions, and the mutant is also present in a cytoplasmic pool. Triton X-100 solubility assays demonstrate that mutant Dsg2 is more soluble than wild-type protein. Interestingly, trafficking of the mutant Dsg2 to the cell surface was delayed, and a pool of the non-palmitoylated Dsg2 co-localized with lysosomal markers. Taken together, these data suggest that palmitoylation of Dsg2 regulates protein transport to the plasma membrane. Modulation of the palmitoylation status of desmosomal cadherins can affect desmosome dynamics.
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Affiliation(s)
- Brett J Roberts
- From the Department of Oral Biology, College of Dentistry, University of Nebraska Medical Center, Lincoln, Nebraska 68583
| | - Robert A Svoboda
- From the Department of Oral Biology, College of Dentistry, University of Nebraska Medical Center, Lincoln, Nebraska 68583
| | - Andrew M Overmiller
- the Department of Dermatology and Cutaneous Biology, Thomas Jefferson University, Philadelphia, Pennsylvania 19107, and
| | - Joshua D Lewis
- the Departments of Cell Biology and Dermatology, Emory University School of Medicine, Atlanta, Georgia 30322
| | - Andrew P Kowalczyk
- the Departments of Cell Biology and Dermatology, Emory University School of Medicine, Atlanta, Georgia 30322
| | - My G Mahoney
- the Department of Dermatology and Cutaneous Biology, Thomas Jefferson University, Philadelphia, Pennsylvania 19107, and
| | - Keith R Johnson
- From the Department of Oral Biology, College of Dentistry, University of Nebraska Medical Center, Lincoln, Nebraska 68583.,the Eppley Institute for Research in Cancer and Allied Diseases, Omaha, Nebraska 68198
| | - James K Wahl
- From the Department of Oral Biology, College of Dentistry, University of Nebraska Medical Center, Lincoln, Nebraska 68583,
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19
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Huang H, Svoboda RA, Lazenby AJ, Saowapa J, Chaika N, Ding K, Wheelock MJ, Johnson KR. Up-regulation of N-cadherin by Collagen I-activated Discoidin Domain Receptor 1 in Pancreatic Cancer Requires the Adaptor Molecule Shc1. J Biol Chem 2016; 291:23208-23223. [PMID: 27605668 DOI: 10.1074/jbc.m116.740605] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2016] [Indexed: 12/13/2022] Open
Abstract
Pancreatic ductal adenocarcinomas are highly malignant cancers characterized by extensive invasion into surrounding tissues, metastasis to distant organs, and a limited response to therapy. A main feature of pancreatic ductal adenocarcinomas is desmoplasia, which leads to extensive deposition of collagen I. We have demonstrated that collagen I can induce epithelial-mesenchymal transition (EMT) in pancreatic cancer cells. A hallmark of EMT is an increase in the expression of the mesenchymal cadherin N-cadherin. Previously we showed up-regulation of N-cadherin promotes tumor cell invasion and that collagen I-induced EMT is mediated by two collagen receptors, α2β1-integrin and discoidin domain receptor 1 (DDR1). DDR1 is a receptor-tyrosine kinase widely expressed during embryonic development and in many adult tissues and is also highly expressed in many different cancers. In the signaling pathway initiated by collagen, we have shown proline-rich tyrosine kinase 2 (Pyk2) is downstream of DDR1. In this study we found isoform b of DDR1 is responsible for collagen I-induced up-regulation of N-cadherin and tyrosine 513 of DDR1b is necessary. Knocking down Shc1, which binds to tyrosine 513 of DDR1b via its PTB (phosphotyrosine binding) domain, eliminates the up-regulation of N-cadherin. The signaling does not require a functional SH2 domain or the tyrosine residues commonly phosphorylated in Shc1 but is mediated by the interaction between a short segment of the central domain of Shc1 and the proline-rich region of Pyk2. Taken together, these data illustrate DDR1b, but not DDR1a, mediates collagen I-induced N-cadherin up-regulation, and Shc1 is involved in this process by coupling to both DDR1 and Pyk2.
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Affiliation(s)
- Huocong Huang
- From the Department of Biochemistry and Molecular Biology, College of Medicine
| | | | - Audrey J Lazenby
- Department of Pathology and Microbiology, College of Medicine, and
| | | | - Nina Chaika
- Eppley Institute for Research in Cancer and Allied Diseases, University of Nebraska Medical Center, Omaha Nebraska 68198
| | - Ke Ding
- State Key Laboratory of Respiratory Diseases, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, #190 Kaiyuan Avenue, Guangzhou 510530, China, and
| | - Margaret J Wheelock
- From the Department of Biochemistry and Molecular Biology, College of Medicine.,Department of Oral Biology, College of Dentistry.,Eppley Institute for Research in Cancer and Allied Diseases, University of Nebraska Medical Center, Omaha Nebraska 68198
| | - Keith R Johnson
- From the Department of Biochemistry and Molecular Biology, College of Medicine, .,Department of Oral Biology, College of Dentistry.,Eppley Institute for Research in Cancer and Allied Diseases, University of Nebraska Medical Center, Omaha Nebraska 68198.,Fred & Pamela Buffett Cancer Center, University of Nebraska Medical Center, Omaha, NE 68198
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20
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Wehrendt DP, Carmona F, González Wusener AE, González Á, Martínez JML, Arregui CO. P120-Catenin Regulates Early Trafficking Stages of the N-Cadherin Precursor Complex. PLoS One 2016; 11:e0156758. [PMID: 27254316 PMCID: PMC4890775 DOI: 10.1371/journal.pone.0156758] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2016] [Accepted: 05/19/2016] [Indexed: 12/31/2022] Open
Abstract
It is well established that binding of p120 catenin to the cytoplasmic domain of surface cadherin prevents cadherin endocytosis and degradation, contributing to cell-cell adhesion. In the present work we show that p120 catenin bound to the N-cadherin precursor, contributes to its anterograde movement from the endoplasmic reticulum (ER) to the Golgi complex. In HeLa cells, depletion of p120 expression, or blocking its binding to N-cadherin, increased the accumulation of the precursor in the ER, while it decreased the localization of mature N-cadherin at intercellular junctions. Reconstitution experiments in p120-deficient SW48 cells with all three major isoforms of p120 (1, 3 and 4) had similar capacity to promote the processing of the N-cadherin precursor to the mature form, and its localization at cell-cell junctions. P120 catenin and protein tyrosine phosphatase PTP1B facilitated the recruitment of the N-ethylmaleimide sensitive factor (NSF), an ATPase involved in vesicular trafficking, to the N-cadherin precursor complex. Dominant negative NSF E329Q impaired N-cadherin trafficking, maturation and localization at cell-cell junctions. Our results uncover a new role for p120 catenin bound to the N-cadherin precursor ensuring its trafficking through the biosynthetic pathway towards the cell surface.
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Affiliation(s)
- Diana P. Wehrendt
- Instituto de Investigaciones Biotecnológicas, (IIB-INTECH), Universidad de San Martín, San Martín, Argentina
| | - Fernando Carmona
- Instituto de Investigaciones Biotecnológicas, (IIB-INTECH), Universidad de San Martín, San Martín, Argentina
| | - Ana E. González Wusener
- Instituto de Investigaciones Biotecnológicas, (IIB-INTECH), Universidad de San Martín, San Martín, Argentina
| | - Ángela González
- Instituto de Investigaciones Biotecnológicas, (IIB-INTECH), Universidad de San Martín, San Martín, Argentina
| | - Juan M. Lázaro Martínez
- Departamento de Química Orgánica, Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, CABA, Argentina
| | - Carlos O. Arregui
- Instituto de Investigaciones Biotecnológicas, (IIB-INTECH), Universidad de San Martín, San Martín, Argentina
- * E-mail:
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21
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Huang CH, Hsu CC, Chen CPC, Chow SE, Wang JS, Shyu YC, Lu MJ. Negative pressure induces p120-catenin-dependent adherens junction disassembly in keratinocytes during wound healing. BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR CELL RESEARCH 2016; 1863:2212-20. [PMID: 27220534 DOI: 10.1016/j.bbamcr.2016.05.017] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/26/2015] [Revised: 05/17/2016] [Accepted: 05/19/2016] [Indexed: 01/08/2023]
Abstract
A negative-pressure of 125mmHg (NP) has been widely used to treat chronic wounds in modern medicine. Keratinocytes under NP treatment have shown accelerated cell movement and decreased E-cadherin expression. However, the molecular mechanism of E-cadherin regulation under NP remains incompletely understood. Therefore, we investigated the E-cadherin regulation in keratinocytes (HaCaT cells) under NP. HaCaT cells were treated at ambient pressure (AP) and NP for 12h. Cell movement was measured by traditional and electric wound healing assays at the 2 different pressures. Mutants with overexpression of p120-catenin (p120(ctn)) were used to observe the effect of NP on p120(ctn) and E-cadherin expression during wound healing. Cell fractionation and immunoblotting data showed that NP increased Y228-phosphorylated p120(ctn) level and resulted in the translocation of p120(ctn) from the plasma membrane to cytoplasm. Immunofluorescence images revealed that NP decreased the co-localization of p120(ctn) and E-cadherin on the plasma membrane. Knockdown of p120(ctn) reduced E-cadherin expression and accelerated cell movement under AP. Overexpression of the Y228-phosphorylation-mimic p120(ctn) decreased E-cadherin membrane expression under both AP and NP. Phosphorylation-deficient mutants conferred restored adherens junctions (AJs) under NP. The Src inhibitor blocked the phosphorylation of p120(ctn) and impeded cell migration under NP. In conclusion, Src-dependent phosphorylation of p120(ctn) can respond rapidly to NP and contribute to E-cadherin downregulation. The NP-induced disassembly of the AJ further accelerates wound healing.
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Affiliation(s)
- Ching-Hui Huang
- Healthy Aging Research Center, Graduate Institute of Rehabilitation Science, Chang Gung University, Taoyuan, Taiwan
| | - Chih-Chin Hsu
- Department of Physical Medicine and Rehabilitation, Chang Gung Memorial Hospital, Keelung, Taiwan; School of Traditional Chinese Medicine, College of Medicine, Chang Gung University, Taoyuan, Taiwan.
| | - Carl Pai-Chu Chen
- Department of Physical Medicine and Rehabilitation, Chang Gung Memorial Hospital, Taipei, Taiwan
| | - Shu-Er Chow
- Center of General Studies, Chang Gung University, Taoyuan, Taiwan
| | - Jong-Shyan Wang
- Healthy Aging Research Center, Graduate Institute of Rehabilitation Science, Chang Gung University, Taoyuan, Taiwan
| | - Yu-Chiau Shyu
- Community Medicine Research Center, Chang Gung Memorial Hospital, Keelung, Taiwan; Institute of Molecular Biology, Academia Sinica, Nankang, Taipei, Taiwan
| | - Mu-Jie Lu
- Community Medicine Research Center, Chang Gung Memorial Hospital, Keelung, Taiwan
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22
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Recombinant Human Annexin A5 Can Repair the Disrupted Cardiomyocyte Adherens Junctions in Endotoxemia. Shock 2016; 44:83-9. [PMID: 25799159 DOI: 10.1097/shk.0000000000000370] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Recombinant human annexin A5 (Anx5) is known to protect cardiac function during endotoxemia, although the underlying mechanisms have yet to be elucidated. In this study, we demonstrated that Anx5 could repair the disrupted cardiomyocyte adherens junctions and improve the myocardial contractile function in lipopolysaccharide (LPS)-induced endotoxemia. Mechanistic studies revealed that Anx5 could antagonize the disassociation between p120-catenin (p120) and N-cadherin as well as the dephosphorylation of p120 in LPS-treated cardiomyocytes. Small interference RNA and specific inhibitors experiment demonstrated that Anx5 regulated p120 functions by inhibition of p21-activated kinase 5 in a protein kinase Cα-dependent way. Moreover, Anx5 could inhibit nuclear factor κB activation and downregulate the level of inflammatory cytokines, such as tumor necrosis factor α and interleukin 1β, which contributed to improving tissue pathological damage in LPS-induced mouse endotoxemia model. Taken together, Anx5 could protect cardiomyocytes adherens junctions and improve myocardial contractile function via regulation of p120 and anti-inflammation in LPS-induced endotoxemia. This study provided novel insights in the prevention and treatment of septic shock.
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23
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Liu H, Gu Y, Qi J, Han C, Zhang X, Bi C, Yu W. Inhibition of E-cadherin/catenin complex formation by O-linked N-acetylglucosamine transferase is partially independent of its catalytic activity. Mol Med Rep 2015; 13:1851-60. [PMID: 26707622 DOI: 10.3892/mmr.2015.4718] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2015] [Accepted: 11/24/2015] [Indexed: 11/06/2022] Open
Abstract
p120-catenin (p120) contains a large central armadillo repeat domain, via which it binds to E‑cadherin to stabilize the latter, thereby regulating cell‑to‑cell adhesion. A previous study by our group demonstrated that O‑linked N‑acetylglucosamine (O‑GlcNAc) is involved in the regulation of the interaction between p120 and E‑cadherin. As O‑GlcNAc transferase (OGT) is able to directly bind to the majority of its target proteins, the present study hypothesized that OGT may additionally regulate the formation of the E‑cadherin/catenin complex independent of its catalytic activity. To verify this hypothesis, a catalytically inactive OGT mutant was expressed in H1299 cells, and its effects on the formation of the E‑cadherin/catenin complex were assessed. A cytoskeleton‑binding protein extraction assay confirmed that OGT inhibited the formation of the E‑cadherin/catenin complex independent of its catalytic activity. In addition, co‑immunoprecipitation and pull‑down assays were used to evaluate the interaction between OGT and p120. Immunoblotting indicated that OGT was able to directly bind to p120. To determine the domain of p120 involved in binding to OGT, a series of deletion mutants of p120 were constructed and subjected to protein binding assays by pull‑down assays. Immunoblotting showed that OGT bound to the regulatory and armadillo domains of p120, which might interfere with the interaction between p120 and E‑cadherin. Finally, OGT, p120 and E‑cadherin cytoplasmic domains (ECD) were recombinantly expressed in BL21 (DE3) recombinant E. coli cells, and a glutathione S‑transferase (GST) pull‑down assay was performed to assess the interactions among the purified recombinant proteins. Immunoblotting indicated that maltose‑binding protein (MBP)‑OGT inhibited the binding of His‑p120 to GST‑ECD in a dose‑dependent manner. All of these results suggested that OGT inhibited the formation of the E‑cadherin/catenin complex through reducing the interaction between p120 and E‑cadherin. The present study provided a novel underlying mechanism of the regulation of the interaction between p120 and E‑cadherin, and thus E‑cadherin‑mediated cell‑cell adhesion, which has essential roles in cancer development and progression.
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Affiliation(s)
- Haiyan Liu
- Department of Glycobiology, School of Medicine and Pharmacy, Ocean University of China, Qingdao, Shandong 266003, P.R. China
| | - Yuchao Gu
- Department of Glycobiology, School of Medicine and Pharmacy, Ocean University of China, Qingdao, Shandong 266003, P.R. China
| | - Jieqiong Qi
- Department of Glycobiology, School of Medicine and Pharmacy, Ocean University of China, Qingdao, Shandong 266003, P.R. China
| | - Cuifang Han
- Department of Glycobiology, School of Medicine and Pharmacy, Ocean University of China, Qingdao, Shandong 266003, P.R. China
| | - Xinling Zhang
- Department of Glycobiology, School of Medicine and Pharmacy, Ocean University of China, Qingdao, Shandong 266003, P.R. China
| | - Chuanlin Bi
- Department of Glycobiology, School of Medicine and Pharmacy, Ocean University of China, Qingdao, Shandong 266003, P.R. China
| | - Wengong Yu
- Department of Glycobiology, School of Medicine and Pharmacy, Ocean University of China, Qingdao, Shandong 266003, P.R. China
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24
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Hong JY, Oh IH, McCrea PD. Phosphorylation and isoform use in p120-catenin during development and tumorigenesis. BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR CELL RESEARCH 2015; 1863:102-14. [PMID: 26477567 DOI: 10.1016/j.bbamcr.2015.10.008] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/21/2015] [Revised: 10/12/2015] [Accepted: 10/13/2015] [Indexed: 12/12/2022]
Abstract
P120-catenin is essential to vertebrate development, modulating cadherin and small-GTPase functions, and growing evidence points also to roles in the nucleus. A complexity in addressing p120-catenin's functions is its many isoforms, including optional splicing events, alternative points of translational initiation, and secondary modifications. In this review, we focus upon how choices in the initiation of protein translation, or the earlier splicing of the RNA transcript, relates to primary sequences that harbor established or putative regulatory phosphorylation sites. While certain p120 phosphorylation events arise via known kinases/phosphatases and have defined outcomes, in most cases the functional consequences are still to be established. In this review, we provide examples of p120-isoforms as they relate to phosphorylation events, and thereby to isoform dependent protein-protein associations and downstream functions. We also provide a view of upstream pathways that determine p120's phosphorylation state, and that have an impact upon development and disease. Because other members of the p120 subfamily undergo similar processing and phosphorylation, as well as related catenins of the plakophilin subfamily, what is learned regarding p120 will by extension have wide relevance in vertebrates.
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Affiliation(s)
- Ji Yeon Hong
- Division of Cardiology, Department of Medicine, Severance Biomedical Science Institute, Yonsei University College of Medicine, 50 Yonsei-ro, Seodaemun-gu, Seoul 120-752, Republic of Korea.
| | - Il-Hoan Oh
- The Catholic University of Korea, Catholic High Performance Cell Therapy Center, 505 Banpo-dong, Seocho-Ku, Seoul 137-701, Republic of Korea
| | - Pierre D McCrea
- Department of Genetics, University of Texas MD Anderson Cancer Center, University of Texas Graduate School of Biomedical Science, Houston, TX 77030, USA.
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25
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Kourtidis A, Yanagisawa M, Huveldt D, Copland JA, Anastasiadis PZ. Pro-Tumorigenic Phosphorylation of p120 Catenin in Renal and Breast Cancer. PLoS One 2015; 10:e0129964. [PMID: 26067913 PMCID: PMC4466266 DOI: 10.1371/journal.pone.0129964] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2015] [Accepted: 04/27/2015] [Indexed: 11/18/2022] Open
Abstract
Altered protein expression and phosphorylation are common events during malignant transformation. These perturbations have been widely explored in the context of E-cadherin cell-cell adhesion complexes, which are central in the maintenance of the normal epithelial phenotype. A major component of these complexes is p120 catenin (p120), which binds and stabilizes E-cadherin to promote its adhesive and tumor suppressing function. However, p120 is also an essential mediator of pro-tumorigenic signals driven by oncogenes, such as Src, and can be phosphorylated at multiple sites. Although alterations in p120 expression have been extensively studied by immunohistochemistry (IHC) in the context of tumor progression, little is known about the status and role of p120 phosphorylation in cancer. Here we show that tyrosine and threonine phosphorylation of p120 in two sites, Y228 and T916, is elevated in renal and breast tumor tissue samples. We also show that tyrosine phosphorylation of p120 at its N-terminus, including at the Y228 site is required for its pro-tumorigenic potential. In contrast, phosphorylation of p120 at T916 does not affect this p120 function. However, phosphorylation of p120 at T916 interferes with epitope recognition of the most commonly used p120 antibody, namely pp120. As a result, this antibody selectively underrepresents p120 levels in tumor tissues, where p120 is phosphorylated. Overall, our data support a role of p120 phosphorylation as a marker and mediator of tumor transformation. Importantly, they also argue that the level and localization of p120 in human cancer tissues immunostained with pp120 needs to be re-evaluated.
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Affiliation(s)
- Antonis Kourtidis
- Department of Cancer Biology, Mayo Clinic, Jacksonville, Florida, United States of America
| | - Masahiro Yanagisawa
- Department of Cancer Biology, Mayo Clinic, Jacksonville, Florida, United States of America
| | - Deborah Huveldt
- Department of Cancer Biology, Mayo Clinic, Jacksonville, Florida, United States of America
| | - John A. Copland
- Department of Cancer Biology, Mayo Clinic, Jacksonville, Florida, United States of America
| | - Panos Z. Anastasiadis
- Department of Cancer Biology, Mayo Clinic, Jacksonville, Florida, United States of America
- * E-mail:
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26
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Ng MR, Besser A, Brugge JS, Danuser G. Mapping the dynamics of force transduction at cell-cell junctions of epithelial clusters. eLife 2014; 3:e03282. [PMID: 25479385 PMCID: PMC4300730 DOI: 10.7554/elife.03282] [Citation(s) in RCA: 73] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2014] [Accepted: 12/04/2014] [Indexed: 12/15/2022] Open
Abstract
Force transduction at cell-cell adhesions regulates tissue development, maintenance and adaptation. We developed computational and experimental approaches to quantify, with both sub-cellular and multi-cellular resolution, the dynamics of force transmission in cell clusters. Applying this technology to spontaneously-forming adherent epithelial cell clusters, we found that basal force fluctuations were coupled to E-cadherin localization at the level of individual cell-cell junctions. At the multi-cellular scale, cell-cell force exchange depended on the cell position within a cluster, and was adaptive to reconfigurations due to cell divisions or positional rearrangements. Importantly, force transmission through a cell required coordinated modulation of cell-matrix adhesion and actomyosin contractility in the cell and its neighbors. These data provide insights into mechanisms that could control mechanical stress homeostasis in dynamic epithelial tissues, and highlight our methods as a resource for the study of mechanotransduction in cell-cell adhesions. DOI:http://dx.doi.org/10.7554/eLife.03282.001 The intestines, liver, and skin are all examples of organs that perform specific functions. Organs are comprised of tissues, which are themselves made up of cells. Epithelial tissue is one of the four basic types of tissue found in animals, and it occurs in almost every organ in the body. For example, epithelial tissue makes up the outermost layer of the skin, and the lining of the lungs and the intestines; the cells in epithelial tissues are attached to one another via ‘adhesion molecules’. Organs and tissues need to be maintained throughout life in order for them to work properly. Epithelial cells in particular are very short-lived and must be constantly replaced. If epithelial tissue is cut or damaged in any way, the surrounding healthy epithelial cells must work together to repair the wound and restore the tissue's integrity. These processes require individual epithelial cells to communicate with one another. While chemical signals provide one means of cell-to-cell communication, cells also sense and respond to the physical presence of surrounding cells. In adults, organs and tissues generally do not change shape or size; as such there is a tightly balanced exchange of mechanical forces between the individual cells. Damage to the tissue causes a detectable change in these mechanical forces, which is sensed by nearby healthy epithelial cells and causes them to work towards healing the wound. While the importance of mechanical forces in maintaining tissue integrity is widely recognized, there were few tools to study these forces; this meant that mechanical communication through cell–cell adhesion sites was not well understood. Now Ng, Besser et al. describe the development and use of a new method for measuring and mapping the exchange of mechanical forces at cell–cell adhesion sites. Changes in the strength of the forces exchanged between cells could be measured across clusters of multiple cells or for specific parts of individual cells. Ng, Besser et al. found that when an epithelial cell in a cluster started to divide to form two new cells, the cell exerted less mechanical force on its neighboring cells. Ng, Besser et al. found that the forces exerted between cells were strongest when there was more of an adhesion molecule called E-cadherin in the cell surface membrane at the cell–cell adhesion sites. The opposite was also true, as these forces were weakest at cell–cell adhesion sites with fewer E-cadherin molecules. The new method and findings will now help to guide future studies into how mechanical forces are transmitted between living cells. DOI:http://dx.doi.org/10.7554/eLife.03282.002
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Affiliation(s)
- Mei Rosa Ng
- Department of Cell Biology, Harvard Medical School, Boston, United States
| | - Achim Besser
- Department of Cell Biology, Harvard Medical School, Boston, United States
| | - Joan S Brugge
- Department of Cell Biology, Harvard Medical School, Boston, United States
| | - Gaudenz Danuser
- Department of Cell Biology, Harvard Medical School, Boston, United States
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27
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Du W, Liu X, Fan G, Zhao X, Sun Y, Wang T, Zhao R, Wang G, Zhao C, Zhu Y, Ye F, Jin X, Zhang F, Zhong Z, Li X. From cell membrane to the nucleus: an emerging role of E-cadherin in gene transcriptional regulation. J Cell Mol Med 2014; 18:1712-9. [PMID: 25164084 PMCID: PMC4196647 DOI: 10.1111/jcmm.12340] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2014] [Accepted: 05/05/2014] [Indexed: 01/06/2023] Open
Abstract
E-cadherin is a well-known mediator of cell–cell adherens junctions. However, many other functions of E-cadherin have been reported. Collectively, the available data suggest that E-cadherin may also act as a gene transcriptional regulator. Here, evidence supporting this claim is reviewed, and possible mechanisms of action are discussed. E-cadherin has been shown to modulate the activity of several notable cell signalling pathways, and given that most of these pathways in turn regulate gene expression, we proposed that E-cadherin may regulate gene transcription by affecting these pathways. Additionally, E-cadherin has been shown to accumulate in the nucleus where documentation of an E-cadherin fragment bound to DNA suggests that E-cadherin may directly regulate gene transcription. In summary, from the cell membrane to the nucleus, a role for E-cadherin in gene transcription may be emerging. Studies specifically focused on this potential role would allow for a more thorough understanding of this transmembrane glycoprotein in mediating intra- and intercellular activities.
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Affiliation(s)
- Wenjun Du
- Department of Digestion, Shandong Provincial Qianfoshan Hospital, Shandong University, Jinan, Shandong Province, China
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28
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Adherens junction treadmilling during collective migration. Nat Cell Biol 2014; 16:639-51. [PMID: 24929360 DOI: 10.1038/ncb2985] [Citation(s) in RCA: 114] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2013] [Accepted: 05/07/2014] [Indexed: 12/12/2022]
Abstract
Collective cell migration is essential for both physiological and pathological processes. Adherens junctions (AJs) maintain the integrity of the migrating cell group and promote cell coordination while allowing cellular rearrangements. Here, we show that AJs undergo a continuous treadmilling along the lateral sides of adjacent leading cells. The treadmilling is driven by an actin-dependent rearward movement of AJs and is supported by the polarized recycling of N-cadherin. N-cadherin is mainly internalized at the cell rear and then recycled to the leading edge where it accumulates before being incorporated into forming AJs at the front of lateral cell-cell contacts. The polarized dynamics of AJs is controlled by a front-to-rear gradient of p120-catenin phosphorylation, which regulates polarized trafficking of N-cadherin. Perturbation of the GSK3-dependent phosphorylation of p120-catenin impacts on the stability of AJs, and the polarity and speed of leading cells during collective migration.
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Knowles BC, Roland JT, Krishnan M, Tyska MJ, Lapierre LA, Dickman PS, Goldenring JR, Shub MD. Myosin Vb uncoupling from RAB8A and RAB11A elicits microvillus inclusion disease. J Clin Invest 2014; 124:2947-62. [PMID: 24892806 DOI: 10.1172/jci71651] [Citation(s) in RCA: 88] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2013] [Accepted: 04/17/2014] [Indexed: 12/14/2022] Open
Abstract
Microvillus inclusion disease (MVID) is a severe form of congenital diarrhea that arises from inactivating mutations in the gene encoding myosin Vb (MYO5B). We have examined the association of mutations in MYO5B and disruption of microvillar assembly and polarity in enterocytes. Stable MYO5B knockdown (MYO5B-KD) in CaCo2-BBE cells elicited loss of microvilli, alterations in junctional claudins, and disruption of apical and basolateral trafficking; however, no microvillus inclusions were observed in MYO5B-KD cells. Expression of WT MYO5B in MYO5B-KD cells restored microvilli; however, expression of MYO5B-P660L, a MVID-associated mutation found within Navajo populations, did not rescue the MYO5B-KD phenotype but induced formation of microvillus inclusions. Microvilli establishment required interaction between RAB8A and MYO5B, while loss of the interaction between RAB11A and MYO5B induced microvillus inclusions. Using surface biotinylation and dual immunofluorescence staining in MYO5B-KD cells expressing mutant forms of MYO5B, we observed that early microvillus inclusions were positive for the sorting marker SNX18 and derived from apical membrane internalization. In patients with MVID, MYO5B-P660L results in global changes in polarity at the villus tips that could account for deficits in apical absorption, loss of microvilli, aberrant junctions, and losses in transcellular ion transport pathways, likely leading to the MVID clinical phenotype of neonatal secretory diarrhea.
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SERCA2 dysfunction in Darier disease causes endoplasmic reticulum stress and impaired cell-to-cell adhesion strength: rescue by Miglustat. J Invest Dermatol 2014; 134:1961-1970. [PMID: 24390139 DOI: 10.1038/jid.2014.8] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2013] [Revised: 10/31/2013] [Accepted: 12/09/2013] [Indexed: 12/17/2022]
Abstract
Darier disease (DD) is a severe dominant genetic skin disorder characterized by the loss of cell-to-cell adhesion and abnormal keratinization. The defective gene, ATP2A2, encodes sarco/endoplasmic reticulum (ER) Ca2+ -ATPase isoform 2 (SERCA2), a Ca2+ -ATPase pump of the ER. Here we show that Darier keratinocytes (DKs) display biochemical and morphological hallmarks of constitutive ER stress with increased sensitivity to ER stressors. Desmosome and adherens junctions (AJs) displayed features of immature adhesion complexes: expression of desmosomal cadherins (desmoglein 3 (Dsg3) and desmocollin 3 (Dsc3)) and desmoplakin was impaired at the plasma membrane, as well as E-cadherin, β-, α-, and p120-catenin staining. Dsg3, Dsc3, and E-cadherin showed perinuclear staining and co-immunostaining with ER markers, indicative of ER retention. Consistent with these abnormalities, intercellular adhesion strength was reduced as shown by a dispase mechanical dissociation assay. Exposure of normal keratinocytes to the SERCA2 inhibitor thapsigargin recapitulated these abnormalities, supporting the role of loss of SERCA2 function in impaired desmosome and AJ formation. Remarkably, treatment of DKs with the orphan drug Miglustat, a pharmacological chaperone, restored mature AJ and desmosome formation, and improved adhesion strength. These results point to an important contribution of ER stress in DD pathogenesis and provide the basis for future clinical evaluation of Miglustat in Darier patients.
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Espejo R, Jeng Y, Paulucci-Holthauzen A, Rengifo-Cam W, Honkus K, Anastasiadis PZ, Sastry SK. PTP-PEST targets a novel tyrosine site in p120 catenin to control epithelial cell motility and Rho GTPase activity. J Cell Sci 2013; 127:497-508. [PMID: 24284071 PMCID: PMC4007762 DOI: 10.1242/jcs.120154] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Tyrosine phosphorylation is implicated in regulating the adherens junction protein, p120 catenin (p120), however, the mechanisms are not well defined. Here, we show, using substrate trapping, that p120 is a direct target of the protein tyrosine phosphatase, PTP-PEST, in epithelial cells. Stable shRNA knockdown of PTP-PEST in colon carcinoma cells results in an increased cytosolic pool of p120 concomitant with its enhanced tyrosine phosphorylation and decreased association with E-cadherin. Consistent with this, PTP-PEST knockdown cells exhibit increased motility, enhanced Rac1 and decreased RhoA activity on a collagen substrate. Furthermore, p120 localization is enhanced at actin-rich protrusions and lamellipodia and has an increased association with the guanine nucleotide exchange factor, VAV2, and cortactin. Exchange factor activity of VAV2 is enhanced by PTP-PEST knockdown whereas overexpression of a VAV2 C-terminal domain or DH domain mutant blocks cell motility. Analysis of point mutations identified tyrosine 335 in the N-terminal domain of p120 as the site of PTP-PEST dephosphorylation. A Y335F mutant of p120 failed to induce the 'p120 phenotype', interact with VAV2, stimulate cell motility or activate Rac1. Together, these data suggest that PTP-PEST affects epithelial cell motility by controlling the distribution and phosphorylation of p120 and its availability to control Rho GTPase activity.
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Affiliation(s)
- Rosario Espejo
- Sealy Center for Cancer Biology and UTMB Comprehensive Cancer Center, University of Texas Medical Branch, Galveston, TX 77555, USA
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p120 catenin: an essential regulator of cadherin stability, adhesion-induced signaling, and cancer progression. PROGRESS IN MOLECULAR BIOLOGY AND TRANSLATIONAL SCIENCE 2013; 116:409-32. [PMID: 23481205 DOI: 10.1016/b978-0-12-394311-8.00018-2] [Citation(s) in RCA: 115] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
p120 catenin is the best studied member of a subfamily of proteins that associate with the cadherin juxtamembrane domain to suppress cadherin endocytosis. p120 also recruits the minus ends of microtubules to the cadherin complex, leading to junction maturation. In addition, p120 regulates the activity of Rho family GTPases through multiple interactions with Rho GEFs, GAPs, Rho GTPases, and their effectors. Nuclear signaling is affected by the interaction of p120 with Kaiso, a transcription factor regulating Wnt-responsive genes as well as transcriptionally repressing methylated promoters. Multiple alternatively spliced p120 isoforms and complex phosphorylation events affect these p120 functions. In cancer, reduced p120 expression correlates with reduced E-cadherin function and with tumor progression. In contrast, in tumor cells that have lost E-cadherin expression, p120 promotes cell invasion and anchorage-independent growth. Furthermore, p120 is required for Src-induced oncogenic transformation and provides a potential target for future therapeutic interventions.
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Zebda N, Tian Y, Tian X, Gawlak G, Higginbotham K, Reynolds AB, Birukova AA, Birukov KG. Interaction of p190RhoGAP with C-terminal domain of p120-catenin modulates endothelial cytoskeleton and permeability. J Biol Chem 2013; 288:18290-9. [PMID: 23653363 DOI: 10.1074/jbc.m112.432757] [Citation(s) in RCA: 61] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
p120-catenin is a multidomain intracellular protein, which mediates a number of cellular functions, including stabilization of cell-cell transmembrane cadherin complexes as well as regulation of actin dynamics associated with barrier function, lamellipodia formation, and cell migration via modulation of the activities of small GTPAses. One mechanism involves p120 catenin interaction with Rho GTPase activating protein (p190RhoGAP), leading to p190RhoGAP recruitment to cell periphery and local inhibition of Rho activity. In this study, we have identified a stretch of 23 amino acids within the C-terminal domain of p120 catenin as the minimal sequence responsible for the recruitment of p190RhoGAP (herein referred to as CRAD; catenin-RhoGAP association domain). Expression of the p120-catenin truncated mutant lacking the CRAD in endothelial cells attenuated effects of barrier protective oxidized phospholipid, OxPAPC. This effect was accompanied by inhibition of membrane translocation of p190RhoGAP, increased Rho signaling, as well as suppressed activation of Rac1 and its cytoskeletal effectors PAK1 (p21-activated kinase 1) and cortactin. Expression of p120 catenin-truncated mutant lacking CRAD also delayed the recovery process after thrombin-induced endothelial barrier disruption. Concomitantly, RhoA activation and downstream signaling were sustained for a longer period of time, whereas Rac signaling was inhibited. These data demonstrate a critical role for p120-catenin (amino acids 820-843) domain in the p120-catenin·p190RhoGAP signaling complex assembly, membrane targeting, and stimulation of p190RhoGAP activity toward inhibition of the Rho pathway and reciprocal up-regulation of Rac signaling critical for endothelial barrier regulation.
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Affiliation(s)
- Noureddine Zebda
- Lung Injury Center, Section of Pulmonary and Critical Medicine, Department of Medicine, University of Chicago, Chicago, Illinois 60637, USA
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Peng YS, Lin YT, Wang SD, Hung KY, Chen Y, Wang SM. p-Cresol induces disruption of cardiomyocyte adherens junctions. Toxicology 2013; 306:176-84. [DOI: 10.1016/j.tox.2013.02.015] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2013] [Revised: 02/23/2013] [Accepted: 02/25/2013] [Indexed: 10/27/2022]
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Hsu CL, Muerdter CP, Knickerbocker AD, Walsh RM, Zepeda-Rivera MA, Depner KH, Sangesland M, Cisneros TB, Kim JY, Sanchez-Vazquez P, Cherezova L, Regan RD, Bahrami NM, Gray EA, Chan AY, Chen T, Rao MY, Hille MB. Cdc42 GTPase and Rac1 GTPase act downstream of p120 catenin and require GTP exchange during gastrulation of zebrafish mesoderm. Dev Dyn 2012; 241:1545-61. [PMID: 22911626 DOI: 10.1002/dvdy.23847] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/31/2012] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND We investigated the roles of p120 catenin, Cdc42, Rac1, and RhoA GTPases in regulating migration of presomitic mesoderm cells in zebrafish embryos. p120 catenin has dual roles: It binds the intracellular and juxtamembrane region of cadherins to stabilize cadherin-mediated adhesion with the aid of RhoA GTPase, and it activates Cdc42 GTPase and Rac1 GTPase in the cytosol to initiate cell motility. RESULTS During gastrulation of zebrafish embryos, knockdown of the synthesis of zygotic p120 catenin δ1 mRNAs with a splice-site morpholino caused lateral widening and anterior-posterior shortening of the presomitic mesoderm and somites and a shortened anterior-posterior axis. These phenotypes indicate a cell-migration effect. Co-injection of low amounts of wild-type Cdc42 or wild-type Rac1 or dominant-negative RhoA mRNAs, but not constitutively-active Cdc42 mRNA, rescued these p120 catenin δ1-depleted embryos. CONCLUSIONS These downstream small GTPases require appropriate spatiotemporal stimulation or cycling of GTP to guide mesodermal cell migration. A delicate balance of Rho GTPases and p120 catenin underlies normal development.
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Affiliation(s)
- Cynthia L Hsu
- Department of Biology, University of Washington, Seattle, WA 98195, USA
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Regulation of adherens junction dynamics by phosphorylation switches. JOURNAL OF SIGNAL TRANSDUCTION 2012; 2012:125295. [PMID: 22848810 PMCID: PMC3403498 DOI: 10.1155/2012/125295] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/05/2012] [Revised: 05/21/2012] [Accepted: 05/22/2012] [Indexed: 12/15/2022]
Abstract
Adherens junctions connect the actin cytoskeleton of neighboring cells through transmembrane cadherin receptors and a network of adaptor proteins. The interactions between these adaptors and cadherin as well as the activity of actin regulators localized to adherens junctions are tightly controlled to facilitate cell junction assembly or disassembly in response to changes in external or internal forces and/or signaling. Phosphorylation of tyrosine, serine, or threonine residues acts as a switch on the majority of adherens junction proteins, turning "on" or "off" their interactions with other proteins and/or their enzymatic activity. Here, we provide an overview of the kinases and phosphatases regulating phosphorylation of adherens junction proteins and bring examples of phosphorylation events leading to the assembly or disassembly of adherens junctions, highlighting the important role of phosphorylation switches in regulating their dynamics.
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Murali AK, Norris JS. Differential expression of epithelial and mesenchymal proteins in a panel of prostate cancer cell lines. J Urol 2012; 188:632-8. [PMID: 22704442 DOI: 10.1016/j.juro.2012.03.114] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2011] [Indexed: 11/19/2022]
Abstract
PURPOSE Epithelial to mesenchymal transition is an important process that results in increased cell migration, invasion and metastasis of many carcinomas. During epithelial to mesenchymal transition epithelial cells down-regulate cell-cell adhesion molecules (ie E-cadherin), up-regulate mesenchymal proteins (ie N-cadherin and cadherin-11), alter polarity, reorganize the cytoskeleton and become isolated. In combination this leads to greater motility. We investigated the role of E-cadherin and the associated catenin-protein complex in regulating epithelial to mesenchymal transition in prostate cancer progression. MATERIALS AND METHODS The relative invasion index of prostate cancer cells was assessed by MTT based in vitro invasion assay. Immunoprecipitation and Western blot were done to determine cadherin-complex formation, and catenin and cadherin protein expression. RESULTS Restoration of E-cadherin expression in nonE-cadherin expressing prostate cancer cells decreased invasive potential. However, in vitro invasive potential was tightly regulated by the interaction of cadherin proteins with the catenin complex. E and N-cadherin, cadherin-11, and the catenin proteins α, β, γ and p120 are important for the downstream signaling associated with epithelial to mesenchymal transition in tumor cells. CONCLUSIONS Restoration of epithelial specific proteins, such as E-cadherin, in tumor cells can inhibit invasion. However, invasion is a complex process regulated not only by E and N-cadherin but also by catenin-complex proteins. The complex signaling process associated with tumor invasion warrants further investigation since crosstalk between overlapping signaling pathways is involved in regulating prostate cancer invasion, metastasis and progression.
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Affiliation(s)
- Anuradha Kudur Murali
- Department of Microbiology and Immunology of the Medical University of South Carolina, Charleston, South Carolina 29403, USA.
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38
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Smyth D, Leung G, Fernando M, McKay DM. Reduced surface expression of epithelial E-cadherin evoked by interferon-gamma is Fyn kinase-dependent. PLoS One 2012; 7:e38441. [PMID: 22715382 PMCID: PMC3371038 DOI: 10.1371/journal.pone.0038441] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2011] [Accepted: 05/09/2012] [Indexed: 01/13/2023] Open
Abstract
Interferon gamma (IFNγ) is an important regulatory cytokine that can exert a pro-inflammatory effect in the gut, where it has been shown to increase epithelial permeability via disruption of the tight junctions. Here we investigated the potential for IFNγ to regulate the adherens junction protein E-cadherin, an important mediator of normal epithelial tissue function, using the model T84 human colonic epithelial cell line. IFNγ (10 ng/ml) stimulated increased internalization of E-cadherin as assessed by immunofluorescence microscopy; internalization was reversed when cells were treated with PP1 (125 nM), a Src kinase-selective inhibitor. Immunoprecipitation studies demonstrated loss of E-cadherin from membrane fractions following IFNγ treatment and a corresponding increase in cytosolic E-cadherin and its binding partners, p120-catenin and beta-catenin: effects that were Src-kinase dependent. E-cadherin and p120-catenin phosphorylation was increased by IFNγ treatment and siRNA studies showed this was dependent upon the Src-kinase isoform Fyn. E-cadherin ubiquitinylation and subsequent proteasomal degradation stimulated by IFNγ was found to be dependent upon Fyn and the E-cadherin-selective ubiquitin ligase, Hakai. Use of Fyn and Hakai siRNA inhibited the internalization of E-cadherin as shown by immunoblotting and confocal fluorescence microscopy. Finally, IFNγ treatment resulted in a more fragile T84 cell monolayer with increased cell detachment in response to physical stress, which was prevented by PP1 and siRNA targeting Fyn or Hakai. Collectively, these results demonstrate a Fyn kinase-dependent mechanism through which IFNγ regulates E-cadherin stability and suggest a novel mechanism of disruption of epithelial cell contact, which could contribute to perturbed epithelial barrier function.
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Affiliation(s)
- David Smyth
- Gastrointestinal Research Group, Department of Physiology & Pharmacology, Calvin, Phoebe and Joan Snyder Institute for Chronic Diseases, University of Calgary, Calgary, Alberta, Canada
| | - Gabriella Leung
- Gastrointestinal Research Group, Department of Physiology & Pharmacology, Calvin, Phoebe and Joan Snyder Institute for Chronic Diseases, University of Calgary, Calgary, Alberta, Canada
| | - Maria Fernando
- Gastrointestinal Research Group, Department of Physiology & Pharmacology, Calvin, Phoebe and Joan Snyder Institute for Chronic Diseases, University of Calgary, Calgary, Alberta, Canada
| | - Derek M. McKay
- Gastrointestinal Research Group, Department of Physiology & Pharmacology, Calvin, Phoebe and Joan Snyder Institute for Chronic Diseases, University of Calgary, Calgary, Alberta, Canada
- * E-mail:
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Troyanovsky RB, Klingelhöfer J, Troyanovsky SM. α-Catenin contributes to the strength of E-cadherin-p120 interactions. Mol Biol Cell 2011; 22:4247-55. [PMID: 21937720 PMCID: PMC3216651 DOI: 10.1091/mbc.e11-03-0250] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
Cadherin–catenin interactions play an important role in cadherin adhesion. In the cadherin complex, α-catenin contributes to the binding strength of another catenin, p120, to the same complex. The data suggest that α-catenin–p120 contact within the cadherin–catenin complex can regulate cadherin trafficking. Cadherin–catenin interactions play an important role in cadherin-mediated adhesion. Here we present strong evidence that in the cadherin–catenin complex α-catenin contributes to the binding strength of another catenin, p120, to the same complex. Specifically, we found that a β-catenin–uncoupled cadherin mutant interacts much more weakly with p120 than its full-size counterpart and that it is rapidly endocytosed from the surface of A-431 cells. We also showed that p120 overexpression stabilizes this mutant on the cell surface. Examination of the α-catenin–deficient MDA-MB-468 cells and their derivates in which α-catenin was reintroduced showed that α-catenin reinforces E-cadherin–p120 association. Finally, a cross-linking analysis of the cadherin–catenin complex indicated that a large loop located in the middle of the p120 arm-repeat domain is in close spatial vicinity to the amino-terminal VH1 domain of α-catenin. The six amino acid–long extension of this loop, caused by an alternative splicing, weakens p120 binding to cadherin. The data suggest that α-catenin–p120 contact within the cadherin–catenin complex can regulate cadherin trafficking.
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Affiliation(s)
- Regina B Troyanovsky
- Department of Dermatology, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA
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40
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Stairs DB, Bayne LJ, Rhoades B, Vega ME, Waldron TJ, Kalabis J, Klein-Szanto A, Lee JS, Katz JP, Diehl JA, Reynolds AB, Vonderheide RH, Rustgi AK. Deletion of p120-catenin results in a tumor microenvironment with inflammation and cancer that establishes it as a tumor suppressor gene. Cancer Cell 2011; 19:470-83. [PMID: 21481789 PMCID: PMC3077713 DOI: 10.1016/j.ccr.2011.02.007] [Citation(s) in RCA: 154] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/22/2010] [Revised: 10/05/2010] [Accepted: 02/04/2011] [Indexed: 12/30/2022]
Abstract
p120-catenin (p120ctn) interacts with E-cadherin, but to our knowledge, no formal proof that p120ctn functions as a bona fide tumor suppressor gene has emerged to date. We report herein that p120ctn loss leads to tumor development in mice. We have generated a conditional knockout model of p120ctn whereby mice develop preneoplastic and neoplastic lesions in the oral cavity, esophagus, and squamous forestomach. Tumor-derived cells secrete granulocyte macrophage colony-stimulating factor (GM-CSF), macrophage colony-stimulating factor (M-CSF), monocyte chemotactic protein-1 (MCP-1), and tumor necrosis factor-α (TNFα). The tumors contain significant desmoplasia and immune cell infiltration. Immature myeloid cells comprise a significant percentage of the immune cells present and likely participate in fostering a favorable tumor microenvironment, including the activation of fibroblasts.
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Affiliation(s)
- Douglas B. Stairs
- Division of Gastroenterology, University of Pennsylvania
- Department of Medicine, University of Pennsylvania
- Abramson Cancer Center, University of Pennsylvania
| | - Lauren J. Bayne
- Department of Cancer Biology and Abramson Family Cancer Research Institute, University of Pennsylvania
| | - Ben Rhoades
- Division of Gastroenterology, University of Pennsylvania
- Abramson Cancer Center, University of Pennsylvania
| | - Maria E. Vega
- Division of Gastroenterology, University of Pennsylvania
- Abramson Cancer Center, University of Pennsylvania
| | - Todd J. Waldron
- Division of Gastroenterology, University of Pennsylvania
- Abramson Cancer Center, University of Pennsylvania
| | - Jiri Kalabis
- Division of Gastroenterology, University of Pennsylvania
- Abramson Cancer Center, University of Pennsylvania
| | | | - Ju-Seog Lee
- Department of Systems Biology, MD Anderson Cancer Center
| | - Jonathan P. Katz
- Division of Gastroenterology, University of Pennsylvania
- Abramson Cancer Center, University of Pennsylvania
| | - J. Alan Diehl
- Abramson Cancer Center, University of Pennsylvania
- Department of Cancer Biology and Abramson Family Cancer Research Institute, University of Pennsylvania
| | | | - Robert H. Vonderheide
- Department of Medicine, University of Pennsylvania
- Abramson Cancer Center, University of Pennsylvania
- Department of Cancer Biology and Abramson Family Cancer Research Institute, University of Pennsylvania
| | - Anil K. Rustgi
- Division of Gastroenterology, University of Pennsylvania
- Department of Medicine, University of Pennsylvania
- Department of Genetics, University of Pennsylvania
- Abramson Cancer Center, University of Pennsylvania
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Ozaki C, Yoshioka M, Tominaga S, Osaka Y, Obata S, Suzuki ST. p120-Catenin is essential for N-cadherin-mediated formation of proper junctional structure, thereby establishing cell polarity in epithelial cells. Cell Struct Funct 2010; 35:81-94. [PMID: 20859058 DOI: 10.1247/csf.10009] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
Abstract
The role of p120-catenin in the function of classical cadherins is still enigmatic despite various studies. To elucidate its role, we examined the effect of p120-catenin on the N-cadherin-mediated localization of junctional proteins in epithelial cells in this study. Cadherin-deficient MIA PaCa-2 epithelial cells did not show linear localization of tight junction proteins ZO-1 and occludin. When N-cadherin was expressed in these cells, however, the resultant transfectant cells revealed strong cell adhesion activity and linear localization of ZO-1, occludin, and N-cadherin in the lateral membrane. When the p120-catenin-binding site of N-cadherin was disrupted, the linear localization of ZO-1 and occludin disappeared, and the mutant N-cadherin became localized more diffusely in the transfectant, although the cell adhesion activity did not change much. Knockdown of p120-catenin also resulted in the very weak localization of ZO-1 and occludin. A similar effect of p120-catenin on the localization of junctional proteins was obtained under more dynamic conditions in a wound healing assay. Moreover, p120-catenin was essential for the regulation of centrosome orientation in this healing assay. Taken together, the present data indicate that p120-catenin is essential for N-cadherin-mediated formation of proper junctional structures and thereby the establishment of the cell polarity. Similar results were obtained when E-cadherin mutants comparable to those of N-cadherin were used, suggesting that p120-catenin plays the same role in the function of other classical cadherins.
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Affiliation(s)
- Chisa Ozaki
- Department of Bioscience, School of Science and Technology, Kwansei Gakuin University, Sanda-shi, Hyogo-ken, Japan
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42
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Donowitz M, Singh S, Singh P, Salahuddin FF, Chen Y, Chakraborty M, Murtazina R, Gucek M, Cole RN, Zachos NC, Kovbasnjuk O, Broere N, Smalley-Freed WG, Reynolds AB, Hubbard AL, Seidler U, Weinman E, de Jonge HR, Hogema BM, Li X. Alterations in the proteome of the NHERF1 knockout mouse jejunal brush border membrane vesicles. Physiol Genomics 2010; 42A:200-10. [PMID: 20736413 DOI: 10.1152/physiolgenomics.00001.2010] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
Na/H exchanger regulatory factor 1 (NHERF1) is a scaffold protein made up of two PDZ domains and an ERM binding domain. It is in the brush border of multiple epithelial cells where it modulates 1) Na absorption by regulating NHE3 complexes and cytoskeletal association, 2) Cl secretion through trafficking of CFTR, and 3) Na-coupled phosphate absorption through membrane retention of NaPi2a. To further understand the role of NHERF1 in regulation of small intestinal Na absorptive cell function, with emphasis on apical membrane transport regulation, quantitative proteomic analysis was performed on brush border membrane vesicles (BBMV) prepared from wild-type (WT) and homozygous NHERF1 knockout mouse jejunal villus Na absorptive cells. Jejunal architecture appeared normal in NHERF1 null; however, there was increased proliferative activity, as indicated by increased crypt BrdU staining. LC-MS/MS analysis using iTRAQ to compare WT and NHERF1 null BBMV identified 463 proteins present in both WT and NHERF1 null BBMV of simultaneously prepared and studied samples. Seventeen proteins had an altered amount of expression between WT and NHERF1 null in two or more separate preparations, and 149 total proteins were altered in at least one BBMV preparation. The classes of the majority of proteins altered included transport proteins, signaling and trafficking proteins, and proteins involved in proliferation and cell division. Affected proteins also included tight junction and adherens junction proteins, cytoskeletal proteins, as well as metabolic and BB digestive enzymes. Changes in abundance of several proteins were confirmed by immunoblotting [increased CEACAM1, decreased ezrin (p-ezrin), NHERF3, PLCβ3, E-cadherin, p120, β-catenin]. The changes in the jejunal BBMV proteome of NHERF1 null mice are consistent with a more complex role of NHERF1 than just forming signaling complexes and anchoring proteins to the apical membrane and include at least alterations in proteins involved in transport, signaling, and proliferation.
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Affiliation(s)
- M Donowitz
- Department of Medicine, Div. of Gastroenterology, Johns Hopkins University School of Medicine, Baltimore, Maryland 21205-2195, USA.
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Zhigalova NA, Zhenilo SV, Aithozhina DS, Prokhortchouk EB. Bifunctional role of the zinc finger domains of the methyl-DNA-binding protein Kaiso. Mol Biol 2010. [DOI: 10.1134/s0026893310020081] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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44
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Chen Y, Chen CH, Tung PY, Huang SH, Wang SM. An acidic extracellular pH disrupts adherens junctions in HepG2 cells by Src kinases-dependent modification of E-cadherin. J Cell Biochem 2009; 108:851-9. [DOI: 10.1002/jcb.22313] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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45
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p120ctn isoform 1 expression significantly correlates with abnormal expression of E-cadherin and poor survival of lung cancer patients. Med Oncol 2009; 27:880-6. [PMID: 19763914 DOI: 10.1007/s12032-009-9300-2] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2009] [Accepted: 08/25/2009] [Indexed: 10/20/2022]
Abstract
Different p120ctn isoforms exert different, even opposing, effects on tumor cell growth depending on the level of E-cadherin expression, but the impact on clinicopathological parameters of lung cancer patients is not clear. Herein, we investigate the correlation between pan-p120ctn, p120ctn isoform 1, and E-cadherin expression and clinicopathological parameters, especially prognosis, of lung cancer patients. Immunohistochemistry on 20 specimens of normal bronchial epthelium revealed that, p120ctn isoform 1 was not expressed at the membrane; only weak cytoplasmic expression was seen. In contrast, both pan-p120ctn and E-cadherin were expressed clearly on the cell membrane or in the cytoplasmic peri-membrane region. However, in squamous cell lung cancer or lung adenocarcinomas, p120ctn isoform 1 over-expressed in the cytoplasm accompany with the abnormal pan-p120ctn and E-cadherin cytoplasm expression. p120ctn isoform 1 over-expression correlated positively with lymph node metastasis, poor differentiation, histological type, and high TNM stage. Cytoplasmic p120ctn isoform 1 expression in metastatic nodules was always higher than in the primary tumor. While the mean survival times of patients with normal p120 ctn isoform 1 or pan-p120ctn expression differed significantly, the mean survival times of patients with abnormal expression were similar. Lymph node metastasis, TNM stage, abnormal pan-p120ctn expression, and p120ctn isoform 1 over-expression were all independent factors affecting the prognosis of lung cancer patients. Over-expression of p120ctn isoform 1 positively correlated with poor prognosis of lung cancer patients, and therefore may be a useful marker of lung cancer patient survival.
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Fukunaga Y, Svoboda RA, Cerny RL, Johnson KR, Wheelock MJ. Expression artifact with retroviral vectors based on pBMN. Anal Biochem 2009; 395:49-53. [PMID: 19602420 DOI: 10.1016/j.ab.2009.07.014] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2009] [Revised: 07/01/2009] [Accepted: 07/09/2009] [Indexed: 11/25/2022]
Abstract
While characterizing various splice forms of p120 catenin, we observed what appeared to be a novel posttranslational modification of p120, resulting in a higher molecular weight form that was dependent on the splicing pattern. Further investigation revealed the higher molecular weight form to be a fusion protein between sequences encoded by the retroviral vector and p120. We found that the publicly available sequence of the vector we used does not agree with the experimental sequence. We caution other investigators to be aware of this potential artifact.
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Affiliation(s)
- Yoshitaka Fukunaga
- Department of Oral Biology, University of Nebraska Medical Center, Omaha, 68198, USA
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Burke JM. Epithelial phenotype and the RPE: is the answer blowing in the Wnt? Prog Retin Eye Res 2008; 27:579-95. [PMID: 18775790 DOI: 10.1016/j.preteyeres.2008.08.002] [Citation(s) in RCA: 90] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
Cells of the human retinal pigment epithelium (RPE) have a regular epithelial cell shape within the tissue in situ, but for reasons that remain elusive the RPE shows an incomplete and variable ability to re-develop an epithelial phenotype after propagation in vitro. In other epithelial cell cultures, formation of an adherens junction (AJ) composed of E-cadherin plays an important early inductive role in epithelial morphogenesis, but E-cadherin is largely absent from the RPE. In this review, the contribution of cadherins, both minor (E-cadherin) and major (N-cadherin), to RPE phenotype development is discussed. Emphasis is placed on the importance for future studies of actin cytoskeletal remodeling during assembly of the AJ, which in epithelial cells results in an actin organization that is characteristically zonular. Other markers of RPE phenotype that are used to gauge the maturation state of RPE cultures including tissue-specific protein expression, protein polarity, and pigmentation are described. An argument is made that RPE epithelial phenotype, cadherin-based cell-cell adhesion and melanization are linked by a common signaling pathway: the Wnt/beta-catenin pathway. Analyzing this pathway and its intersecting signaling networks is suggested as a useful framework for dissecting the steps in RPE morphogenesis. Also discussed is the effect of aging on RPE phenotype. Preliminary evidence is provided to suggest that light-induced sub-lethal oxidative stress to cultured ARPE-19 cells impairs organelle motility. Organelle translocation, which is mediated by stress-susceptible cytoskeletal scaffolds, is an essential process in cell phenotype development and retention. The observation of impaired organelle motility therefore raises the possibility that low levels of stress, which are believed to accompany RPE aging, may produce subtle disruptions of cell phenotype. Over time these would be expected to diminish the support functions performed by the RPE on behalf of photoreceptors, theoretically contributing to aging retinal disease such as age-related macular degeneration (AMD). Analyzing sub-lethal stress that produces declines in RPE functional efficiency rather than overt cell death is suggested as a useful future direction for understanding the effects of age on RPE organization and physiology. As for phenotype and pigmentation, a role for the Wnt/beta-catenin pathway is also suggested in regulating the RPE response to oxidative stress. Exploration of this pathway in the RPE therefore may provide a unifying strategy for advancing our understanding of both RPE phenotype and the consequences of mild oxidative stress on RPE structure and function.
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Affiliation(s)
- Janice M Burke
- Department of Ophthalmology, Medical College of Wisconsin, The Eye Institute, 925 North 87th Street, Milwaukee, WI 53226-4812, USA.
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Wheelock MJ, Shintani Y, Maeda M, Fukumoto Y, Johnson KR. Cadherin switching. J Cell Sci 2008; 121:727-35. [PMID: 18322269 DOI: 10.1242/jcs.000455] [Citation(s) in RCA: 632] [Impact Index Per Article: 39.5] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
The cadherin molecules at adherens junctions have multiple isoforms. Cadherin isoform switching (cadherin switching) occurs during normal developmental processes to allow cell types to segregate from one another. Tumor cells often recapitulate this activity and the result is an aggressive tumor cell that gains the ability to leave the site of the tumor and metastasize. At present, we understand some of the mechanisms that promote cadherin switching and some of the pathways downstream of this process that influence cell behavior. Specific cadherin family members influence growth-factor-receptor signaling and Rho GTPases to promote cell motility and invasion. In addition, p120-catenin probably plays multiple roles in cadherin switching, regulating Rho GTPases and stabilizing cadherins.
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Affiliation(s)
- Margaret J Wheelock
- University of Nebraska Medical Center, Department of Oral Biology and Eppley Cancer Center, Omaha, NE 68198-7696, USA.
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