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Kurilla A, László L, Takács T, Tilajka Á, Lukács L, Novák J, Pancsa R, Buday L, Vas V. Studying the Association of TKS4 and CD2AP Scaffold Proteins and Their Implications in the Partial Epithelial-Mesenchymal Transition (EMT) Process. Int J Mol Sci 2023; 24:15136. [PMID: 37894817 PMCID: PMC10606890 DOI: 10.3390/ijms242015136] [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: 07/28/2023] [Revised: 10/05/2023] [Accepted: 10/06/2023] [Indexed: 10/29/2023] Open
Abstract
Colon cancer is a leading cause of death worldwide. Identification of new molecular factors governing the invasiveness of colon cancer holds promise in developing screening and targeted therapeutic methods. The Tyrosine Kinase Substrate with four SH3 domains (TKS4) and the CD2-associated protein (CD2AP) have previously been linked to dynamic actin assembly related processes and cancer cell migration, although their co-instructive role during tumor formation remained unknown. Therefore, this study was designed to investigate the TKS4-CD2AP interaction and study the interdependent effect of TKS4/CD2AP on oncogenic events. We identified CD2AP as a novel TKS4 interacting partner via co-immunoprecipitation-mass spectrometry methods. The interaction was validated via Western blot (WB), immunocytochemistry (ICC) and proximity ligation assay (PLA). The binding motif of CD2AP was explored via peptide microarray. To uncover the possible cooperative effects of TKS4 and CD2AP in cell movement and in epithelial-mesenchymal transition (EMT), we performed gene silencing and overexpressing experiments. Our results showed that TKS4 and CD2AP form a scaffolding protein complex and that they can regulate migration and EMT-related pathways in HCT116 colon cancer cells. This is the first study demonstrating the TKS4-CD2AP protein-protein interaction in vitro, their co-localization in intact cells, and their potential interdependent effects on partial-EMT in colon cancer.
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Affiliation(s)
- Anita Kurilla
- Institute of Enzymology, Research Centre for Natural Sciences, 1117 Budapest, Hungary
| | - Loretta László
- Institute of Enzymology, Research Centre for Natural Sciences, 1117 Budapest, Hungary
- Doctoral School of Biology, Institute of Biology, ELTE Eötvös Loránd University, 1117 Budapest, Hungary
| | - Tamás Takács
- Institute of Enzymology, Research Centre for Natural Sciences, 1117 Budapest, Hungary
- Doctoral School of Biology, Institute of Biology, ELTE Eötvös Loránd University, 1117 Budapest, Hungary
| | - Álmos Tilajka
- Institute of Enzymology, Research Centre for Natural Sciences, 1117 Budapest, Hungary
- Doctoral School of Biology, Institute of Biology, ELTE Eötvös Loránd University, 1117 Budapest, Hungary
| | - Laura Lukács
- Institute of Enzymology, Research Centre for Natural Sciences, 1117 Budapest, Hungary
| | - Julianna Novák
- Institute of Enzymology, Research Centre for Natural Sciences, 1117 Budapest, Hungary
| | - Rita Pancsa
- Institute of Enzymology, Research Centre for Natural Sciences, 1117 Budapest, Hungary
| | - László Buday
- Institute of Enzymology, Research Centre for Natural Sciences, 1117 Budapest, Hungary
- Department of Molecular Biology, Semmelweis University, 1094 Budapest, Hungary
| | - Virág Vas
- Institute of Enzymology, Research Centre for Natural Sciences, 1117 Budapest, Hungary
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Hua XY, Bie XX, Cheng X, Zhang SG. High expression of CIN85 promotes proliferation and invasion of human esophageal squamous cell carcinoma. Mol Med Rep 2020; 23:12. [PMID: 33179079 PMCID: PMC7673327 DOI: 10.3892/mmr.2020.11650] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2020] [Accepted: 10/13/2020] [Indexed: 01/01/2023] Open
Abstract
SH3 domain-containing kinase-binding protein 1 (CIN85), an 85 kDa protein known to be a member of the signal adaptor family, is abnormally expressed in several human malignancies and has been found to be involved in the growth, migration and invasion of these tumors. The objective of the present study was to clarify the clinical significance of CIN85 in human esophageal squamous cell carcinoma (ESCC), as well as its in vitro functions. CIN85 expression was evaluated in 129 cases of ESCC and its adjacent normal tissues using immunohistochemistry to explore its clinical relevance and prognostic value. The functions of CIN85 in the ESCC TE1 cell line were analyzed in vitro using the interfering short hairpin RNA silencing technique. MTS, wound healing, clone formation and Transwell assays were used to detect the proliferation, migration and invasion of ESCC cells. CIN85 expression was identified mainly in ESCCs and their adjacent normal tissues, and the high expression of CIN85 was significantly associated with advanced Tumor Node Metastasis stage and lymph node metastasis. CIN85 gene silencing significantly inhibited TE1 cell proliferation, migration and invasion. These results demonstrated that CIN85 was highly expressed in advanced stage ESCC and lymph node metastasis, and played a critical role in tumor proliferation and progression. Therefore, CIN85 may be a promising therapeutic target for human ESCC.
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Affiliation(s)
- Xiao-Yang Hua
- Department of Thoracic Surgery, The First Hospital of China Medical University, Shenyang, Liaoning 110001, P.R. China
| | - Xing-Xing Bie
- Department of Thoracic Surgery, The First Hospital of China Medical University, Shenyang, Liaoning 110001, P.R. China
| | - Xi Cheng
- Department of Neurology, The First Hospital of China Medical University, Shenyang, Liaoning 110001, P.R. China
| | - Shu-Guang Zhang
- Department of Thoracic Surgery, The First Hospital of China Medical University, Shenyang, Liaoning 110001, P.R. China
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3
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Kozlova N, Mennerich D, Samoylenko A, Dimova EY, Koivunen P, Biterova E, Richter K, Hassinen A, Kellokumpu S, Manninen A, Miinalainen I, Glumoff V, Ruddock L, Drobot LB, Kietzmann T. The Pro-Oncogenic Adaptor CIN85 Acts as an Inhibitory Binding Partner of Hypoxia-Inducible Factor Prolyl Hydroxylase 2. Cancer Res 2019; 79:4042-4056. [PMID: 31142511 DOI: 10.1158/0008-5472.can-18-3852] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2018] [Revised: 04/17/2019] [Accepted: 05/24/2019] [Indexed: 11/16/2022]
Abstract
The EGFR adaptor protein, CIN85, has been shown to promote breast cancer malignancy and hypoxia-inducible factor (HIF) stability. However, the mechanisms underlying cancer promotion remain ill defined. Here we show that CIN85 is a novel binding partner of the main HIF-prolyl hydroxylase, PHD2, but not of PHD1 or PHD3. Mechanistically, the N-terminal SRC homology 3 domains of CIN85 interacted with the proline-arginine-rich region within the N-terminus of PHD2, thereby inhibiting PHD2 activity and HIF degradation. This activity is essential in vivo, as specific loss of the CIN85-PHD2 interaction in CRISPR/Cas9-edited cells affected growth and migration properties, as well as tumor growth in mice. Overall, we discovered a previously unrecognized tumor growth checkpoint that is regulated by CIN85-PHD2 and uncovered an essential survival function in tumor cells by linking growth factor adaptors with hypoxia signaling. SIGNIFICANCE: This study provides unprecedented evidence for an oxygen-independent mechanism of PHD2 regulation that has important implications in cancer cell survival. GRAPHICAL ABSTRACT: http://cancerres.aacrjournals.org/content/canres/79/16/4042/F1.large.jpg.
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Affiliation(s)
- Nina Kozlova
- Cancer Center at Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, Massachusetts.,Faculty of Biochemistry and Molecular Medicine and Biocenter Oulu, University of Oulu, Oulu, Finland
| | - Daniela Mennerich
- Faculty of Biochemistry and Molecular Medicine and Biocenter Oulu, University of Oulu, Oulu, Finland
| | - Anatoly Samoylenko
- Faculty of Biochemistry and Molecular Medicine and Biocenter Oulu, University of Oulu, Oulu, Finland.,Center for Cell-Matrix Research, Faculty of Biochemistry and Molecular Medicine, University of Oulu, Oulu, Finland
| | - Elitsa Y Dimova
- Faculty of Biochemistry and Molecular Medicine and Biocenter Oulu, University of Oulu, Oulu, Finland.,Center for Cell-Matrix Research, Faculty of Biochemistry and Molecular Medicine, University of Oulu, Oulu, Finland
| | - Peppi Koivunen
- Faculty of Biochemistry and Molecular Medicine and Biocenter Oulu, University of Oulu, Oulu, Finland.,Center for Cell-Matrix Research, Faculty of Biochemistry and Molecular Medicine, University of Oulu, Oulu, Finland
| | - Ekaterina Biterova
- Faculty of Biochemistry and Molecular Medicine and Biocenter Oulu, University of Oulu, Oulu, Finland
| | - Kati Richter
- Faculty of Biochemistry and Molecular Medicine and Biocenter Oulu, University of Oulu, Oulu, Finland
| | - Antti Hassinen
- Institute for Molecular Medicine Finland (FIMM), Helsinki, Finland
| | - Sakari Kellokumpu
- Faculty of Biochemistry and Molecular Medicine and Biocenter Oulu, University of Oulu, Oulu, Finland
| | - Aki Manninen
- Center for Cell-Matrix Research, Faculty of Biochemistry and Molecular Medicine, University of Oulu, Oulu, Finland.,Biocenter Oulu, University of Oulu, Oulu, Finland
| | | | - Virpi Glumoff
- The Research Unit of Biomedicine, University of Oulu, Oulu, Finland
| | - Lloyd Ruddock
- Faculty of Biochemistry and Molecular Medicine and Biocenter Oulu, University of Oulu, Oulu, Finland
| | - Lyudmyla Borysivna Drobot
- Laboratory of Cell Signaling, Palladin Institute of Biochemistry, National Academy of Sciences of Ukraine, Kyiv, Ukraine
| | - Thomas Kietzmann
- Faculty of Biochemistry and Molecular Medicine and Biocenter Oulu, University of Oulu, Oulu, Finland. .,Biocenter Oulu, University of Oulu, Oulu, Finland
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4
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Rak MA, Buehler J, Zeltzer S, Reitsma J, Molina B, Terhune S, Goodrum F. Human Cytomegalovirus UL135 Interacts with Host Adaptor Proteins To Regulate Epidermal Growth Factor Receptor and Reactivation from Latency. J Virol 2018; 92:e00919-18. [PMID: 30089695 PMCID: PMC6158428 DOI: 10.1128/jvi.00919-18] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2018] [Accepted: 07/27/2018] [Indexed: 01/03/2023] Open
Abstract
Human cytomegalovirus, HCMV, is a betaherpesvirus that establishes a lifelong latent infection in its host that is marked by recurrent episodes of reactivation. The molecular mechanisms by which the virus and host regulate entry into and exit from latency remain poorly understood. We have previously reported that UL135 is critical for reactivation, functioning in part by overcoming suppressive effects of the latency determinant UL138 We have demonstrated a role for UL135 in diminishing cell surface levels and targeting epidermal growth factor receptor (EGFR) for turnover. The attenuation of EGFR signaling promotes HCMV reactivation in combination with cellular differentiation. In this study, we sought to define the mechanisms by which UL135 functions in regulating EGFR turnover and viral reactivation. Screens to identify proteins interacting with pUL135 identified two host adaptor proteins, CIN85 and Abi-1, with overlapping activities in regulating EGFR levels in the cell. We mapped the amino acids in pUL135 necessary for interaction with Abi-1 and CIN85 and generated recombinant viruses expressing variants of pUL135 that do not interact with CIN85 or Abi-1. These recombinant viruses replicate in fibroblasts but are defective for reactivation in an experimental model for latency using primary CD34+ hematopoietic progenitor cells (HPCs). These UL135 variants have altered trafficking of EGFR and are defective in targeting EGFR for turnover. These studies demonstrate a requirement for pUL135 interactions with Abi-1 and CIN85 for regulation of EGFR and mechanistically link the regulation of EGFR to reactivation.IMPORTANCE Human cytomegalovirus (HCMV) establishes a lifelong latent infection in the human host. While the infection is typically asymptomatic in healthy individuals, HCMV infection poses life-threatening disease risk in immunocompromised individuals and is the leading cause of birth defects. Understanding how HCMV controls the lifelong latent infection and reactivation of replication from latency is critical to developing strategies to control HCMV disease. Here, we identify the host factors targeted by a viral protein that is required for reactivation. We define the importance of this virus-host interaction in reactivation from latency, providing new insights into the molecular underpinnings of HCMV latency and reactivation.
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Affiliation(s)
- Michael A Rak
- Department of Cellular and Molecular Medicine, University of Arizona, Tucson, Arizona, USA
| | - Jason Buehler
- BIO5 Institute, University of Arizona, Tucson, Arizona, USA
| | - Sebastian Zeltzer
- Department of Cellular and Molecular Medicine, University of Arizona, Tucson, Arizona, USA
| | - Justin Reitsma
- Department of Microbiology and Immunology, Medical College of Wisconsin, Milwaukee, Wisconsin, USA
- Department of Biomedical Engineering, Medical College of Wisconsin, Milwaukee, Wisconsin, USA
| | - Belen Molina
- Department of Immunobiology, University of Arizona, Tucson, Arizona, USA
| | - Scott Terhune
- Department of Microbiology and Immunology, Medical College of Wisconsin, Milwaukee, Wisconsin, USA
- Department of Biomedical Engineering, Medical College of Wisconsin, Milwaukee, Wisconsin, USA
| | - Felicia Goodrum
- Department of Cellular and Molecular Medicine, University of Arizona, Tucson, Arizona, USA
- BIO5 Institute, University of Arizona, Tucson, Arizona, USA
- Department of Immunobiology, University of Arizona, Tucson, Arizona, USA
- University of Arizona Center on Aging, Tucson, Arizona, USA
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5
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González-Mariscal L, Miranda J, Raya-Sandino A, Domínguez-Calderón A, Cuellar-Perez F. ZO-2, a tight junction protein involved in gene expression, proliferation, apoptosis, and cell size regulation. Ann N Y Acad Sci 2017; 1397:35-53. [PMID: 28415133 DOI: 10.1111/nyas.13334] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2016] [Revised: 02/10/2017] [Accepted: 02/21/2017] [Indexed: 02/07/2023]
Abstract
ZO-2 is a peripheral tight junction protein that belongs to the membrane-associated guanylate kinase protein family. Here, we explain the modular and supramodular organization of ZO-2 that allows it to interact with a wide variety of molecules, including cell-cell adhesion proteins, cytoskeletal components, and nuclear factors. We also describe how ZO proteins evolved through metazoan evolution and analyze the intracellular traffic of ZO-2, as well as the roles played by ZO-2 at the plasma membrane and nucleus that translate into the regulation of proliferation, cell size, and apoptosis. In addition, we focus on the impact of ZO-2 expression on male fertility and on maladies like cancer, cholestasis, and hearing loss.
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Affiliation(s)
- Lorenza González-Mariscal
- Department of Physiology, Biophysics and Neuroscience, Center for Research and Advanced Studies (Cinvestav), Mexico City, Mexico
| | - Jael Miranda
- Department of Physiology, Biophysics and Neuroscience, Center for Research and Advanced Studies (Cinvestav), Mexico City, Mexico
| | - Arturo Raya-Sandino
- Department of Physiology, Biophysics and Neuroscience, Center for Research and Advanced Studies (Cinvestav), Mexico City, Mexico
| | - Alaide Domínguez-Calderón
- Department of Physiology, Biophysics and Neuroscience, Center for Research and Advanced Studies (Cinvestav), Mexico City, Mexico
| | - Francisco Cuellar-Perez
- Department of Physiology, Biophysics and Neuroscience, Center for Research and Advanced Studies (Cinvestav), Mexico City, Mexico
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6
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Kühn J, Wong LE, Pirkuliyeva S, Schulz K, Schwiegk C, Fünfgeld KG, Keppler S, Batista FD, Urlaub H, Habeck M, Becker S, Griesinger C, Wienands J. The adaptor protein CIN85 assembles intracellular signaling clusters for B cell activation. Sci Signal 2016; 9:ra66. [PMID: 27353366 DOI: 10.1126/scisignal.aad6275] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
The adaptor molecule Cbl-interacting protein of 85 kD (CIN85) regulates signaling from a number of cell surface receptors, such as growth factor receptors and antigen receptors on lymphocytes. Because of its multidomain structure, CIN85 is thought to act as a classical adaptor protein that connects functionally distinct components of a given signaling pathway through diverse protein domains. However, we found that in B lymphocytes, CIN85 functions to oligomerize SLP-65, which is the central effector protein of the B cell receptor (BCR). Therefore, CIN85 trimerizes through a carboxyl-terminal, coiled-coil domain. The multiple Src homology 3 (SH3) domains of trimeric CIN85 molecules associated with multiple SLP-65 molecules, which recruited further CIN85 trimers, thereby perpetuating the oligomerization process. Formation of this oligomeric signaling complex in resting B cells rendered the cells poised for the efficient initiation of intracellular signaling upon BCR stimulation. Our data suggest that the functionality of signaling cascades does not rely solely on the qualitative linkage of their various components but requires a critical number of effectors to become concentrated in signaling complexes.
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Affiliation(s)
- Julius Kühn
- Institute of Cellular and Molecular Immunology, Georg August University of Göttingen, Humboldtallee 34, 37073 Göttingen, Germany
| | - Leo E Wong
- Department of NMR-based Structural Biology, Max Planck Institute for Biophysical Chemistry, Am Fassberg 11, 37077 Göttingen, Germany
| | - Sona Pirkuliyeva
- Institute of Cellular and Molecular Immunology, Georg August University of Göttingen, Humboldtallee 34, 37073 Göttingen, Germany
| | - Kathrin Schulz
- Institute of Cellular and Molecular Immunology, Georg August University of Göttingen, Humboldtallee 34, 37073 Göttingen, Germany
| | - Claudia Schwiegk
- Department of NMR-based Structural Biology, Max Planck Institute for Biophysical Chemistry, Am Fassberg 11, 37077 Göttingen, Germany
| | - Kevser Gencalp Fünfgeld
- Department for Cellular Logistic, Max Planck Institute for Biophysical Chemistry, 37077 Göttingen, Germany
| | - Selina Keppler
- Lymphocyte Interaction Laboratory, London Research Institute, Cancer Research UK, Lincoln's Inn Fields 44, London WC2A 3LY, UK
| | - Facundo D Batista
- Lymphocyte Interaction Laboratory, London Research Institute, Cancer Research UK, Lincoln's Inn Fields 44, London WC2A 3LY, UK
| | - Henning Urlaub
- Bioanalytical Mass Spectrometry, Max Planck Institute for Biophysical Chemistry, 37077 Göttingen, Germany. Bioanalytics Group, Institute for Clinical Chemistry, University Medical Center, Robert-Koch-Strasse 40, 37075 Göttingen, Germany
| | - Michael Habeck
- Statistical Inverse Problems in Biophysics, Max Planck Institute for Biophysical Chemistry, 37077 Göttingen, Germany
| | - Stefan Becker
- Department of NMR-based Structural Biology, Max Planck Institute for Biophysical Chemistry, Am Fassberg 11, 37077 Göttingen, Germany
| | - Christian Griesinger
- Department of NMR-based Structural Biology, Max Planck Institute for Biophysical Chemistry, Am Fassberg 11, 37077 Göttingen, Germany.
| | - Jürgen Wienands
- Institute of Cellular and Molecular Immunology, Georg August University of Göttingen, Humboldtallee 34, 37073 Göttingen, Germany.
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7
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Lee H, Tsygankov AY. Cbl-family proteins as regulators of cytoskeleton-dependent phenomena. J Cell Physiol 2013; 228:2285-93. [DOI: 10.1002/jcp.24412] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2013] [Accepted: 05/29/2013] [Indexed: 12/21/2022]
Affiliation(s)
- Hojin Lee
- Department of Microbiology and Immunology; Sol Sherry Thrombosis Research Center and Fels Institute for Cancer Research; Temple University School of Medicine; Philadelphia Pennsylvania
| | - Alexander Y. Tsygankov
- Department of Microbiology and Immunology; Sol Sherry Thrombosis Research Center and Fels Institute for Cancer Research; Temple University School of Medicine; Philadelphia Pennsylvania
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8
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Ceregido MA, Garcia-Pino A, Ortega-Roldan JL, Casares S, López Mayorga O, Bravo J, van Nuland NAJ, Azuaga AI. Multimeric and differential binding of CIN85/CD2AP with two atypical proline-rich sequences from CD2 and Cbl-b*. FEBS J 2013; 280:3399-415. [PMID: 23663663 DOI: 10.1111/febs.12333] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2013] [Revised: 05/08/2013] [Accepted: 05/09/2013] [Indexed: 11/29/2022]
Abstract
The CD2AP (CD2-associated protein) and CIN85 (Cbl-interacting protein of 85 kDa) adaptor proteins each employ three Src homology 3 (SH3) domains to cluster protein partners and ensure efficient signal transduction and down-regulation of tyrosine kinase receptors. Using NMR, isothermal titration calorimetry and small-angle X-ray scattering methods, we have characterized several binding modes of the N-terminal SH3 domain (SH3A) of CD2AP and CIN85 with two natural atypical proline-rich regions in CD2 (cluster of differentiation 2) and Cbl-b (Casitas B-lineage lymphoma), and compared these data with previous studies and published crystal structures. Our experiments show that the CD2AP-SH3A domain forms a type II dimer with CD2 and both type I and type II dimeric complexes with Cbl-b. Like CD2AP, the CIN85-SH3A domain forms a type II complex with CD2, but a trimeric complex with Cbl-b, whereby the type I and II interactions take place at the same time. Together, these results explain how multiple interactions among similar SH3 domains and ligands produce a high degree of diversity in tyrosine kinase, cell adhesion or T-cell signaling pathways.
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Affiliation(s)
- M Angeles Ceregido
- Departamento de Química Física e Instituto de Biotecnología, Facultad de Ciencias, Universidad de Granada, Granada, Spain
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Minegishi Y, Shibagaki Y, Mizutani A, Fujita K, Tezuka T, Kinoshita M, Kuroda M, Hattori S, Gotoh N. Adaptor protein complex of FRS2β and CIN85/CD2AP provides a novel mechanism for ErbB2/HER2 protein downregulation. Cancer Sci 2013; 104:345-52. [PMID: 23279575 DOI: 10.1111/cas.12086] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2012] [Revised: 12/06/2012] [Accepted: 12/09/2012] [Indexed: 12/13/2022] Open
Abstract
Overexpression of the ErbB2/HER2 receptor tyrosine kinase contributes to tumorigenesis. However, mechanisms regulating ErbB2 protein levels remain largely unclear. Here, we identified novel mechanisms of ErbB2 downregulation. ErbB2 constitutively binds to an adaptor protein FRS2β. We found that FRS2β bound to CD2AP and CIN85, which induces endosomal trafficking that targets lysosomes. FRS2β colocalized with CIN85 in the cytoplasm. Expression of wild type FRS2β but not its CIN85 non-binding mutant, downregulated the ErbB2 protein and inhibited anchorage-independent cell growth. Moreover, the E3 ubiquitin-protein ligase Cbl was contained within a complex of FRS2β and CIN85. Knockdown of both CIN85 and CD2AP or of Cbl, or treatment with lysosomal degradation inhibitors diminished FRS2β downregulation of ErbB2. In addition, knockdown of endogenous FRS2β caused upregulation of ErbB2 in primary neural cells. Finally, immunohistochemical analysis showed that human breast cancer tissues that overexpress ErbB2 expressed low levels of FRS2β. Thus, an FRS2β-CIN85/CD2AP-Cbl axis for downregulation of ErbB2 may regulate ErbB2 protein levels in physiological and pathological settings. Molecular targeting drugs that can increase or stabilize the ErbB2-FRS2β-CIN85/CD2AP-Cbl axis may have promise for the control of ErbB2-overexpressing tumors.
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Affiliation(s)
- Yuriko Minegishi
- Division of Systems Biomedical Technology, The University of Tokyo, Tokyo, Japan
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10
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The B-cell antigen receptor signals through a preformed transducer module of SLP65 and CIN85. EMBO J 2011; 30:3620-34. [PMID: 21822214 PMCID: PMC3181483 DOI: 10.1038/emboj.2011.251] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2011] [Accepted: 07/05/2011] [Indexed: 12/27/2022] Open
Abstract
Spleen tyrosine kinase Syk and its substrate SLP65 (also called BLNK) are proximal signal transducer elements of the B-cell antigen receptor (BCR). Yet, our understanding of signal initiation and processing is limited owing to the incomplete list of SLP65 interaction partners and our ignorance of their association kinetics. We have now determined and quantified the in vivo interactomes of SLP65 in resting and stimulated B cells by mass spectrometry. SLP65 orchestrated a complex signal network of about 30 proteins that was predominantly based on dynamic interactions. However, a stimulation-independent and constant association of SLP65 with the Cbl-interacting protein of 85 kDa (CIN85) was requisite for SLP65 phosphorylation and its inducible plasma membrane translocation. In the absence of a steady SLP65/CIN85 complex, BCR-induced Ca(2+) and NF-κB responses were abrogated. Finally, live cell imaging and co-immunoprecipitation experiments further confirmed that both SLP65 and CIN85 are key components of the BCR-associated primary transducer module required for the onset and progression phases of BCR signal transduction.
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11
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ARAP1 association with CIN85 affects epidermal growth factor receptor endocytic trafficking. Biol Cell 2011; 103:171-84. [PMID: 21275903 DOI: 10.1042/bc20100154] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
BACKGROUND INFORMATION ARAP1 is an Arf (ADP-ribosylation factor)-directed GAP (GTPase-activating protein) that inhibits the trafficking of EGFR (epidermal growth factor receptor) to the early endosome. To further understand the function of ARAP1, we sought to identify proteins that interact with ARAP1. RESULTS Here we report that ARAP1 associates with the CIN85 (Cbl-interacting protein of 85 kDa). Arg86 and Arg90 of ARAP1 and the SH3 (Src homology 3) domains of CIN85 are necessary for the interaction. We found that a mutant of ARAP1 with reduced affinity for CIN85 does not efficiently rescue the effect of reduced ARAP1 expression on EGFR trafficking to the early endosome. Reduced expression of CIN85 has a similar effect as reduced expression of ARAP1 on traffic of the EGFR. Cbl proteins regulate the endocytic trafficking of the EGFR by mediating ubiquitination of the EGFR. Overexpression of ARAP1 reduced ubiquitination of the EGFR by Cbl and slowed Cbl-dependent degradation of the EGFR. Reduced expression of ARAP1 accelerated degradation of EGFR but did not affect the level of ubiquitination of the receptor that was detected. CONCLUSION ARAP1 interaction with CIN85 regulates endocytic trafficking of the EGFR and affects ubiquitination of EGFR. We propose a model in which the ARAP1-CIN85 complex drives exit of EGF-EGFR-Cbl complex from a pre-early endosome into a pathway distinct from the early endosome/lysosome pathway.
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12
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Büchse T, Horras N, Lenfert E, Krystal G, Körbel S, Schümann M, Krause E, Mikkat S, Tiedge M. CIN85 interacting proteins in B cells-specific role for SHIP-1. Mol Cell Proteomics 2011; 10:M110.006239. [PMID: 21725061 DOI: 10.1074/mcp.m110.006239] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
The Cbl-interacting 85-kDa protein (CIN85) plays an important role as a negative regulator of signaling pathways induced by receptor tyrosine kinases. By assembling multiprotein complexes this versatile adaptor enhances receptor tyrosine kinase-activated clathrin-mediated endocytosis and reduces phosphatidylinositol-3-kinase-induced phosphatidylinositol-3,4,5-trisphosphate production. Here we report the expression of CIN85 in primary splenic B lymphocytes and the B-lymphoma cell lines WEHI 231 and Ba/F3. Cross-linking of the B cell antigen receptor resulted in an increased association of CIN85 with the ubiquitin ligase Cbl. Through a systematic pull-down proteomics approach we identified 51 proteins that interact with CIN85 in B cells, including proteins not shown previously to be CIN85-associated. Among these proteins, the SH2-containing inositol phosphatase 1 (SHIP-1) co-precipitated with both the full-length CIN85 and each of its three SH3 domains. We also showed that this association is constitutive and depends on a region of 79 amino acids near the carboxyl terminus of SHIP-1, a region rich in potential SH3 domain binding sites. Because SHIP-1 is a major negative regulator of the phosphatidylinositol-3-kinase pathway in lymphocytes, we hypothesize that the interaction between SHIP-1 and CIN85 might synergistically facilitate the down-regulation of phosphatidylinositol-3,4,5-trisphosphate levels.
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Affiliation(s)
- Tom Büchse
- Institute of Medical Biochemistry and Molecular Biology, Medical Faculty, University of Rostock, Schillingallee 70, 18057 Rostock, Germany.
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Carducci M, Perfetto L, Briganti L, Paoluzi S, Costa S, Zerweck J, Schutkowski M, Castagnoli L, Cesareni G. The protein interaction network mediated by human SH3 domains. Biotechnol Adv 2011; 30:4-15. [PMID: 21740962 DOI: 10.1016/j.biotechadv.2011.06.012] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2011] [Revised: 05/31/2011] [Accepted: 06/13/2011] [Indexed: 10/18/2022]
Abstract
Families of conserved protein domains, specialized in mediating interactions with short linear peptide motifs, are responsible for the formation of a variety of dynamic complexes in the cell. An important subclass of these motifs are characterized by a high proline content and play a pivotal role in biological processes requiring the coordinated assembly of multi-protein complexes. This is achieved via interaction of proteins containing modules such as Src Homology-3 (SH3) or WW domains and specific proline rich patterns. Here we make available via a publicly accessible database a synopsis of our current understanding of the interaction landscape of the human SH3 protein family. This is achieved by integrating an information extraction strategy with a new experimental approach. In a first approach we have used a text mining strategy to capture a large number of manuscripts reporting interactions between SH3 domains and target peptides. Relevant information was annotated in the MINT database. In a second experimental approach we have used a variant of the WISE (Whole Interactome Scanning Experiment) strategy to probe a large number of naturally occurring and chemically-synthesized peptides arrayed at high density on a glass surface. By this method we have tested 60 human SH3 domains for their ability to bind a collection of 9192 poly-proline containing peptides immobilized on a glass chip. To evaluate the quality of the resulting interaction dataset, we retested some of the interactions on a smaller scale and performed a series of pull down experiments on native proteins. Peptide chips, pull down assays, SPOT synthesis and phage display experiments have allowed us to further characterize the specificity and promiscuity of proline-rich binding domains and to map their interaction network. Both the information captured from the literature and the interactions inferred from the peptide chip experiments were collected and stored in the PepspotDB (http://mint.bio.uniroma2.it/PepspotDB/).
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Affiliation(s)
- Martina Carducci
- Department of Biology, University of Rome Tor Vergata, Via della Ricerca Scientifica, Rome, Italy.
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Marois L, Vaillancourt M, Paré G, Gagné V, Fernandes MJG, Rollet-Labelle E, Naccache PH. CIN85 modulates the down-regulation of Fc gammaRIIa expression and function by c-Cbl in a PKC-dependent manner in human neutrophils. J Biol Chem 2011; 286:15073-84. [PMID: 21372129 PMCID: PMC3083175 DOI: 10.1074/jbc.m110.213660] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2010] [Revised: 02/21/2011] [Indexed: 01/04/2023] Open
Abstract
We previously described a non-classical mechanism that arrests FcγRIIa signaling in human neutrophils once engaged by immune complexes or opsonized pathogens. The engagement of FcγRIIa leads to its ubiquitination by the ubiquitin ligase c-Cbl and degradation by the proteasome. Herein, we further examined some of the events regulating this novel pathway. The adaptor protein CIN85 was described in other systems to be involved in the regulation of the c-Cbl-dependent pathway. We found that CIN85 is expressed in human neutrophils and that it translocates like c-Cbl from the cytosol to the plasma membrane following receptor cross-linking. CIN85 was also recruited to the same subset of high density detergent-resistant membrane fractions in which stimulated FcγRIIa partitioned with c-Cbl. The integrity of these microdomains is essential to the FcγRIIa degradation process because the cholesterol-depleting agent methyl-β-cyclodextrin inhibits this event. Silencing the expression of CIN85 by siRNA in dibutyryl cyclic AMP-differentiated PLB 985 cells prevented FcγRIIa degradation and increased IgG-mediated phagocytosis. Confocal microscopy revealed that the presence of CIN85 is essential to the proper sorting of FcγRIIa during endocytosis. We also provide direct evidence that CIN85 is a substrate of serine/threonine kinase PKCs. Classical PKCs positively regulate FcγRIIa ubiquitination and degradation because these events were inhibited by Gö6976, a classical PKC inhibitor. We conclude that the ubiquitination and degradation of stimulated FcγRIIa mediated by c-Cbl are positively regulated by the adaptor protein CIN85 in a PKC-dependent manner and that these events contribute to the termination of FcγRIIa signaling.
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Affiliation(s)
- Louis Marois
- From the Centre de Recherche en Rhumatologie et Immunologie, Centre de Recherche du CHUQ, Département de Microbiologie-Infectiologie et Immunologie, Faculté de Médecine, Université Laval, Québec, Québec G1V 4G2, Canada
| | - Myriam Vaillancourt
- From the Centre de Recherche en Rhumatologie et Immunologie, Centre de Recherche du CHUQ, Département de Microbiologie-Infectiologie et Immunologie, Faculté de Médecine, Université Laval, Québec, Québec G1V 4G2, Canada
| | - Guillaume Paré
- From the Centre de Recherche en Rhumatologie et Immunologie, Centre de Recherche du CHUQ, Département de Microbiologie-Infectiologie et Immunologie, Faculté de Médecine, Université Laval, Québec, Québec G1V 4G2, Canada
| | - Valérie Gagné
- From the Centre de Recherche en Rhumatologie et Immunologie, Centre de Recherche du CHUQ, Département de Microbiologie-Infectiologie et Immunologie, Faculté de Médecine, Université Laval, Québec, Québec G1V 4G2, Canada
| | - Maria J. G. Fernandes
- From the Centre de Recherche en Rhumatologie et Immunologie, Centre de Recherche du CHUQ, Département de Microbiologie-Infectiologie et Immunologie, Faculté de Médecine, Université Laval, Québec, Québec G1V 4G2, Canada
| | - Emmanuelle Rollet-Labelle
- From the Centre de Recherche en Rhumatologie et Immunologie, Centre de Recherche du CHUQ, Département de Microbiologie-Infectiologie et Immunologie, Faculté de Médecine, Université Laval, Québec, Québec G1V 4G2, Canada
| | - Paul H. Naccache
- From the Centre de Recherche en Rhumatologie et Immunologie, Centre de Recherche du CHUQ, Département de Microbiologie-Infectiologie et Immunologie, Faculté de Médecine, Université Laval, Québec, Québec G1V 4G2, Canada
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Identification and biophysical assessment of the molecular recognition mechanisms between the human haemopoietic cell kinase Src homology domain 3 and ALG-2-interacting protein X. Biochem J 2010; 431:93-102. [DOI: 10.1042/bj20100314] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
SFKs (Src family kinases) are central regulators of many signalling pathways. Their functions are tightly regulated through SH (Src homology) domain-mediated protein–protein interactions. A yeast two-hybrid screen using SH3 domains as bait identified Alix [ALG-2 (apoptosis-linked gene 2)-interacting protein X] as a novel Hck (haemopoietic cell kinase) SH3 domain interactor. The Alix–Hck-SH3 interaction was confirmed in vitro by a GST (glutathione transferase) pull-down assay and in intact cells by a mammalian two-hybrid assay. Furthermore, the interaction was demonstrated to be biologically relevant in cells. Through biophysical experiments, we then identified the PRR (proline-rich region) motif of Alix that binds Hck-SH3 and determined a dissociation constant of 34.5 μM. Heteronuclear NMR spectroscopy experiments were used to map the Hck-SH3 residues that interact with an ALIX construct containing the V and PRR domains or with the minimum identified interacting motif. Finally, SAXS (small-angle X-ray scattering) analysis showed that the N-terminal PRR of Alix is unfolded, at least before Hck-SH3 recognition. These results indicate that residues outside the canonical PxxP motif of Alix enhance its affinity and selectivity towards Hck-SH3. The structural framework of the Hck–Alix interaction will help to clarify how Hck and Alix assist during virus budding and cell-surface receptor regulation.
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16
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A Dyn2-CIN85 complex mediates degradative traffic of the EGFR by regulation of late endosomal budding. EMBO J 2010; 29:3039-53. [PMID: 20711168 DOI: 10.1038/emboj.2010.190] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2009] [Accepted: 07/14/2010] [Indexed: 11/09/2022] Open
Abstract
The epidermal growth factor receptor (EGFR) is over-expressed in a variety of human cancers. Downstream signalling of this receptor is tightly regulated both spatially and temporally by controlling its internalization and subsequent degradation. Internalization of the EGFR requires dynamin 2 (Dyn2), a large GTPase that deforms lipid bilayers, leading to vesicle scission. The adaptor protein CIN85 (cbl-interacting protein of 85 kDa), which has been proposed to indirectly link the EGFR to the endocytic machinery at the plasma membrane, is also thought to be involved in receptor internalization. Here, we report a novel and direct interaction between Dyn2 and CIN85 that is induced by EGFR stimulation and, most surprisingly, occurs late in the endocytic process. Importantly, disruption of the CIN85-Dyn2 interaction results in accumulation of internalized EGFR in late endosomes that become aberrantly elongated into distended tubules. Consistent with the accumulation of this receptor is a sustention of downstream signalling cascades. These findings provide novel insights into a previously unknown protein complex that can regulate EGFR traffic at very late stages of the endocytic pathway.
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Shimokawa N, Haglund K, Hölter SM, Grabbe C, Kirkin V, Koibuchi N, Schultz C, Rozman J, Hoeller D, Qiu CH, Londoño MB, Ikezawa J, Jedlicka P, Stein B, Schwarzacher SW, Wolfer DP, Ehrhardt N, Heuchel R, Nezis I, Brech A, Schmidt MHH, Fuchs H, Gailus-Durner V, Klingenspor M, Bogler O, Wurst W, Deller T, de Angelis MH, Dikic I. CIN85 regulates dopamine receptor endocytosis and governs behaviour in mice. EMBO J 2010; 29:2421-32. [PMID: 20551902 DOI: 10.1038/emboj.2010.120] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2009] [Accepted: 05/17/2010] [Indexed: 01/17/2023] Open
Abstract
Despite extensive investigations of Cbl-interacting protein of 85 kDa (CIN85) in receptor trafficking and cytoskeletal dynamics, little is known about its functions in vivo. Here, we report the study of a mouse deficient of the two CIN85 isoforms expressed in the central nervous system, exposing a function of CIN85 in dopamine receptor endocytosis. Mice lacking CIN85 exon 2 (CIN85(Deltaex2)) show hyperactivity phenotypes, characterized by increased physical activity and exploratory behaviour. Interestingly, CIN85(Deltaex2) animals display abnormally high levels of dopamine and D2 dopamine receptors (D2DRs) in the striatum, an important centre for the coordination of animal behaviour. Importantly, CIN85 localizes to the post-synaptic compartment of striatal neurons in which it co-clusters with D2DRs. Moreover, it interacts with endocytic regulators such as dynamin and endophilins in the striatum. Absence of striatal CIN85 causes insufficient complex formation of endophilins with D2DRs in the striatum and ultimately decreased D2DR endocytosis in striatal neurons in response to dopamine stimulation. These findings indicate an important function of CIN85 in the regulation of dopamine receptor functions and provide a molecular explanation for the hyperactive behaviour of CIN85(Deltaex2) mice.
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Affiliation(s)
- Noriaki Shimokawa
- Institute of Biochemistry II and Cluster of Excellence Macromolecular Complexes, Goethe University, Frankfurt (Main), Germany
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18
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Cindr Interacts with Anillin to Control Cytokinesis in Drosophila melanogaster. Curr Biol 2010; 20:944-50. [DOI: 10.1016/j.cub.2010.03.068] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2009] [Revised: 03/29/2010] [Accepted: 03/29/2010] [Indexed: 11/20/2022]
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19
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Havrylov S, Redowicz MJ, Buchman VL. Emerging roles of Ruk/CIN85 in vesicle-mediated transport, adhesion, migration and malignancy. Traffic 2010; 11:721-31. [PMID: 20331533 DOI: 10.1111/j.1600-0854.2010.01061.x] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Ruk/CIN85 is an adaptor protein. Similar to many other proteins of this type, Ruk/CIN85 is known to take part in multiple cellular processes including signal transduction, vesicle-mediated transport, cytoskeleton remodelling, programmed cell death and viral infection. Recent studies have also revealed the potential importance of Ruk/CIN85 in cancer cell invasiveness. In this review we summarize the various roles of this protein as well as the potential contribution of Ruk/CIN85 to malignancy and the invasiveness of cancer cells. In the last section of the paper we also speculate on the utility of Ruk/CIN85 as a target for novel anti-cancer therapies.
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Affiliation(s)
- Serhiy Havrylov
- Nencki Institute of Experimental Biology, Pasteura 3 Street, 02-093 Warsaw, Poland
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20
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Abstract
Multiple recent reports implicate amyloid precursor protein (APP) signaling in the pathogenesis of Alzheimer's disease, but the APP-dependent signaling network involved has not been defined. Here, we report a novel consensus sequence for interaction with the PDZ-1 and PDZ-2 domains of the APP-interacting proteins Mint1, Mint2, and Mint3 (X11alpha, X11beta, and X11gamma), and multiple novel interactors for these proteins, with the finding that transcriptional coactivators are highly represented among these interactors. Furthermore, we show that Mint3 interaction with a set of the transcriptional coactivators leads to nuclear localization and transactivation, whereas interaction of the same set with Mint1 or Mint2 prevents nuclear localization and transactivation. These results define new mediators of the signal transduction network mediated by APP.
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21
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Proteins recruited by SH3 domains of Ruk/CIN85 adaptor identified by LC-MS/MS. Proteome Sci 2009; 7:21. [PMID: 19531213 PMCID: PMC2702278 DOI: 10.1186/1477-5956-7-21] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2009] [Accepted: 06/16/2009] [Indexed: 11/27/2022] Open
Abstract
Background Ruk/CIN85 is a mammalian adaptor molecule with three SH3 domains. Using its SH3 domains Ruk/CIN85 can cluster multiple proteins and protein complexes, and, consequently, facilitates organisation of elaborate protein interaction networks with diverse regulatory roles. Previous research linked Ruk/CIN85 with the regulation of vesicle-mediated transport and cancer cell invasiveness. Despite the recent findings, precise molecular functions of Ruk/CIN85 in these processes remain largely elusive and further research is hampered by a lack of complete lists of its partner proteins. Results In the present study we employed a LC-MS/MS-based experimental pipeline to identify a considerable number (over 100) of proteins recruited by the SH3 domains of Ruk/CIN85 in vitro. Most of these identifications are novel Ruk/CIN85 interaction candidates. The identified proteins have diverse molecular architectures and can interact with other proteins, as well as with lipids and nucleic acids. Some of the identified proteins possess enzymatic activities. Functional profiling analyses and literature mining demonstrate that many of the proteins recruited by the SH3 domains of Ruk/CIN85 identified in this work were involved in the regulation of membranes and cytoskeletal structures necessary for vesicle-mediated transport and cancer cell invasiveness. Several groups of the proteins were also associated with few other cellular processes not previously related to Ruk/CIN85, most prominently with cell division. Conclusion Obtained data support the notion that Ruk/CIN85 regulates vesicle-mediated transport and cancer cell invasiveness through the assembly of multimeric protein complexes governing coordinated remodelling of membranes and underlying cytoskeletal structures, and imply its important roles in formation of coated vesicles and biogenesis of invadopodia. In addition, this study points to potential involvement of Ruk/CIN85 in other cellular processes, chiefly in cell division.
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Novel Insights into the Mechanisms of CIN85 SH3 Domains Binding to Cbl Proteins: Solution-Based Investigations and In Vivo Implications. J Mol Biol 2009; 387:1120-36. [DOI: 10.1016/j.jmb.2009.02.061] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2008] [Revised: 02/20/2009] [Accepted: 02/24/2009] [Indexed: 11/21/2022]
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23
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24
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Ababou A, Pfuhl M, Ladbury JE. The binding stoichiometry of CIN85 SH3 domain A and cbl-b. Nat Struct Mol Biol 2008; 15:890-1; author reply 891-2. [PMID: 18769462 PMCID: PMC2770232 DOI: 10.1038/nsmb0908-890] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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25
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Johnson RI, Seppa MJ, Cagan RL. The Drosophila CD2AP/CIN85 orthologue Cindr regulates junctions and cytoskeleton dynamics during tissue patterning. ACTA ACUST UNITED AC 2008; 180:1191-204. [PMID: 18362180 PMCID: PMC2290846 DOI: 10.1083/jcb.200706108] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Developing tissues require cells to undergo intricate processes to shift into appropriate niches. This requires a functional connection between adhesion-mediating events at the cell surface and a cytoskeletal reorganization to permit directed movement. A small number of proteins are proposed to link these processes. Here, we identify one candidate, Cindr, the sole Drosophila melanogaster member of the CD2AP/CIN85 family (this family has been previously implicated in a variety of processes). Using D. melanogaster retina, we demonstrate that Cindr links cell surface junctions (E-cadherin) and adhesion (Roughest) with multiple components of the actin cytoskeleton. Reducing cindr activity leads to defects in local cell movement and, consequently, tissue patterning and cell death. Cindr activity is required for normal localization of Drosophila E-cadherin and Roughest, and we show additional physical and functional links to multiple components of the actin cytoskeleton, including the actin-capping proteins capping protein alpha and capping protein beta. Together, these data demonstrate that Cindr is involved in dynamic cell rearrangement in an emerging epithelium.
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Affiliation(s)
- Ruth I Johnson
- Department of Developmental and Regenerative Biology, Mount Sinai Medical School, New York, NY 10029, USA
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26
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Sato Y, Taoka M, Sugiyama N, Kubo KI, Fuchigami T, Asada A, Saito T, Nakajima K, Isobe T, Hisanaga SI. Regulation of the interaction of Disabled-1 with CIN85 by phosphorylation with Cyclin-dependent kinase 5. Genes Cells 2007; 12:1315-27. [DOI: 10.1111/j.1365-2443.2007.01139.x] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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27
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Kurakin A, Swistowski A, Wu SC, Bredesen DE. The PDZ domain as a complex adaptive system. PLoS One 2007; 2:e953. [PMID: 17895993 PMCID: PMC1978516 DOI: 10.1371/journal.pone.0000953] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2007] [Accepted: 08/30/2007] [Indexed: 11/19/2022] Open
Abstract
Specific protein associations define the wiring of protein interaction networks and thus control the organization and functioning of the cell as a whole. Peptide recognition by PDZ and other protein interaction domains represents one of the best-studied classes of specific protein associations. However, a mechanistic understanding of the relationship between selectivity and promiscuity commonly observed in the interactions mediated by peptide recognition modules as well as its functional meaning remain elusive. To address these questions in a comprehensive manner, two large populations of artificial and natural peptide ligands of six archetypal PDZ domains from the synaptic proteins PSD95 and SAP97 were generated by target-assisted iterative screening (TAIS) of combinatorial peptide libraries and by synthesis of proteomic fragments, correspondingly. A comparative statistical analysis of affinity-ranked artificial and natural ligands yielded a comprehensive picture of known and novel PDZ ligand specificity determinants, revealing a hitherto unappreciated combination of specificity and adaptive plasticity inherent to PDZ domain recognition. We propose a reconceptualization of the PDZ domain in terms of a complex adaptive system representing a flexible compromise between the rigid order of exquisite specificity and the chaos of unselective promiscuity, which has evolved to mediate two mutually contradictory properties required of such higher order sub-cellular organizations as synapses, cell junctions, and others – organizational structure and organizational plasticity/adaptability. The generalization of this reconceptualization in regard to other protein interaction modules and specific protein associations is consistent with the image of the cell as a complex adaptive macromolecular system as opposed to clockwork.
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Affiliation(s)
- Alexei Kurakin
- The Buck Institute for Age Research, Novato, California, USA.
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Navarro MN, Nusspaumer G, Fuentes P, González-García S, Alcain J, Toribio ML. Identification of CMS as a cytosolic adaptor of the human pTalpha chain involved in pre-TCR function. Blood 2007; 110:4331-40. [PMID: 17823309 DOI: 10.1182/blood-2007-06-094938] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
The T-cell receptor beta (TCRbeta)/pre-TCRalpha (pTalpha) pre-TCR complex (pre-TCR) signals the expansion and differentiation of de-veloping thymocytes. Functional pro-perties of the pre-TCR rely on its unique pTalpha chain, which suggests the participation of specific intracellular adaptors. However, pTalpha-interacting molecules remain unknown. Here, we identified a polyproline-arginine sequence in the human pTalpha cytoplasmic tail that interacted in vitro with SH3 domains of the CIN85/CMS family of adaptors, and mediated the recruitment of multiprotein complexes involving all (CMS, CIN85, and CD2BP3) members. Supporting the physiologic relevance of this interaction, we found that 1 such adaptor, CMS, interacted in vivo with human pTalpha, and its expression was selectively up-regulated during human thymopoiesis in pre-TCR-activated thymocytes. Upon activation, pre-TCR clustering was induced, and CMS and polymerized actin were simultaneously recruited to the pre-TCR activation site. CMS also associated via its C-terminal region to the actin cytoskeleton in the endocytic compartment, where it colocalized with internalized pTalpha in traffic to lysosomal degradation. Notably, deletion of the pTalpha CIN85/CMS-binding motif impaired pre-TCR-mediated Ca(2+) mobilization and NFAT transcriptional activity, and precluded activation induced by overexpression of a CMS-SH3 N-terminal mutant. These results provide the first molecular evidence for a pTalpha intracellular adaptor involved in pre-TCR function.
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Affiliation(s)
- María N Navarro
- Centro de Biología Molecular Severo Ochoa, Consejo Superior de Investigaciones Científicas, Universidad Autónoma de Madrid, Cantoblanco, Madrid, Spain
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29
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Gauthier NC, Monzo P, Gonzalez T, Doye A, Oldani A, Gounon P, Ricci V, Cormont M, Boquet P. Early endosomes associated with dynamic F-actin structures are required for late trafficking of H. pylori VacA toxin. ACTA ACUST UNITED AC 2007; 177:343-54. [PMID: 17438076 PMCID: PMC2064141 DOI: 10.1083/jcb.200609061] [Citation(s) in RCA: 78] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Glycosylphosphatidylinositol-anchored proteins (GPI-APs) are endocytosed by a clathrin- independent pathway into vesicles named GPI-AP–enriched early endosomal compartments (GEECs). We recently showed that the vacuolating toxin VacA secreted by Helicobacter pylori is endocytosed into the GEECs (Gauthier, N.C., P. Monzo, V. Kaddai, A. Doye, V. Ricci, and P. Boquet. 2005. Mol. Biol. Cell. 16:4852–4866). Unlike GPI-APs that are mostly recycled back to the plasma membrane, VacA reaches early endosomes (EEs) and then late endosomes (LEs), where vacuolation occurs. In this study, we used VacA to study the trafficking pathway between GEECs and LEs. We found that VacA routing from GEECs to LEs required polymerized actin. During this trafficking, VacA was transferred from GEECs to EEs associated with polymerized actin structures. The CD2-associated protein (CD2AP), a docking protein implicated in intracellular trafficking, bridged the filamentous actin (F-actin) structures with EEs containing VacA. CD2AP regulated those F-actin structures and was required to transfer VacA from GEECs to LEs. These results demonstrate that sorting from GEECs to LEs requires dynamic F-actin structures on EEs.
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Affiliation(s)
- Nils C Gauthier
- Unité 627 and 2Unité 568, Institut National de la Santé et de la Recherche Medicale, Faculty of Medicine, 06107 Nice, Cedex 02, France
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Kurakin A, Bredesen DE. An unconventional IAP-binding motif revealed by target-assisted iterative screening (TAIS) of the BIR3-cIAP1 domain. J Mol Recognit 2007; 20:39-50. [PMID: 17094177 PMCID: PMC1847359 DOI: 10.1002/jmr.809] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Target-assisted iterative screening (TAIS) has been applied to a random phage-displayed peptide library in a search for novel ligands of the third baculovirus IAP ('inhibitors of apoptosis') repeat (BIR) domain of cIAP1. The peptides selected in the screen fall into two distinct specificity groups, one that conforms to a known IAP-binding motif (IBM) and another one that reveals a novel BIR domain interacting motif, NH(2)-SR(V/P)W. The biochemical profiling of selected sequences with synthetic peptides, which included alanine scanning and N- and C-terminal truncations as well as competition with the Smac peptide, suggests a major energetic contribution of tryptophan at the +4 position of peptide ligands to binding and identifies the latter together with the respective pocket on the BIR domain surface as a 'hot spot' of the interaction. A peptide featuring the novel motif selectively binds the full-length cIAP1 protein in cell lysates. A 'two-pocket' model of BIR domain recognition mechanism is proposed as the basis of differential BIR domain interactions with different IBMs.
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Affiliation(s)
- Alexei Kurakin
- The Buck Institute for Age Research, 8001 Redwood Blvd., Novato, CA 94945, USA.
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31
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Yao B, Zhang J, Dai H, Sun J, Jiao Y, Tang Y, Wu J, Shi Y. Solution structure of the second SH3 domain of human CMS and a newly identified binding site at the C-terminus of c-Cbl. BIOCHIMICA ET BIOPHYSICA ACTA-PROTEINS AND PROTEOMICS 2007; 1774:35-43. [PMID: 17188587 DOI: 10.1016/j.bbapap.2006.09.018] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/08/2006] [Revised: 09/12/2006] [Accepted: 09/12/2006] [Indexed: 10/24/2022]
Abstract
CMS, cas ligand with multiple Src homology 3 (SH3) domains, belongs to a family of ubiquitously expressed adaptor proteins. Among the CMS binding proteins, c-Cbl has been mostly extensively studied. It was reported that the motif PKPFPR (residues 824-829) of c-Cbl can bind to the N-terminus SH3 domains of CMS. Here we report the solution structure of the second SH3 domain of CMS (CMS_SH3_B), furthermore, we have identified that a peptide from residues 701 to 714 of c-Cbl (Cbl-p), i.e. MTPSSRPLRPLDTS, can specially bind to CMS_SH3_B using NMR chemical shift perturbation, suggesting that the peptide is a new potential CMS binding site. Among the peptide, TPSSRPLR is the core binding motif and Arg709 plays a key role in the interaction. Cbl-p binding interface on CMS_SH3_B along a hydrophobic channel is composed of RT loop, n-Src loop and beta4 strand and divided into three pockets. This work indicates the solution structure of CMS_SH3_B bears the canonical beta-beta-beta-beta-alpha-beta fold and a new binding site in c-Cbl involved in its interaction with CMS, which probably contributes to the clustering of CMS. All the information provided here should be beneficial for the future functional study of CMS.
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Affiliation(s)
- Bo Yao
- School of Life Science, Hefei National Laboratory for Physical Sciences at Microscale, University of Science and Technology of China, Hefei, Anhui 230027, Peoples Republic of China
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Moncalián G, Cárdenes N, Deribe YL, Spínola-Amilibia M, Dikic I, Bravo J. Atypical Polyproline Recognition by the CMS N-terminal Src Homology 3 Domain. J Biol Chem 2006; 281:38845-53. [PMID: 17020880 DOI: 10.1074/jbc.m606411200] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
The CIN85/CMS (human homologs of mouse SH3KBP1/CD2AP) family of endocytic adaptor proteins has the ability to engage multiple effectors and couple cargo trafficking with the cytoskeleton. CIN85 and CMS (Cas ligand with multiple Src homology 3 (SH3) domains) facilitate the formation of large multiprotein complexes required for an efficient internalization of cell surface receptors. It has recently been shown that c-Cbl/Cbl-b could mediate the formation of a ternary complex between one c-Cbl/Cbl-b molecule and two SH3 domains of CIN85, important for the ability of Cbl to promote epidermal growth factor receptor down-regulation. To further investigate whether multimerization is conserved within the family of adaptor proteins, we have solved the crystal structures of the CMS N-terminal SH3 domain-forming complexes with Cbl-b- and CD2-derived peptides. Together with biochemical evidence, the structures support the notion that, despite clear differences in the interaction surface, both Cbl-b and CD2 can mediate multimerization of N-terminal CMS SH3 domains. Detailed analyses on the interacting surfaces also provide the basis for a differential Cbl-b molecular recognition of CMS and CIN85.
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Affiliation(s)
- Gabriel Moncalián
- Signal Transduction Group, Structural Biology and Biocomputing Programme, Centro Nacional de Investigaciones Oncológicas, Melchor Fernández Almagro 3, E-28029 Madrid, Spain
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Ichioka F, Takaya E, Suzuki H, Kajigaya S, Buchman VL, Shibata H, Maki M. HD-PTP and Alix share some membrane-traffic related proteins that interact with their Bro1 domains or proline-rich regions. Arch Biochem Biophys 2006; 457:142-9. [PMID: 17174262 DOI: 10.1016/j.abb.2006.11.008] [Citation(s) in RCA: 53] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2006] [Revised: 11/07/2006] [Accepted: 11/09/2006] [Indexed: 11/25/2022]
Abstract
Mammalian Alix is a multifunctional adaptor protein involved in cell death, receptor endocytosis, endosomal protein sorting and cell adhesion by associating with various proteins such as ALG-2, CIN85/Rukl/SETA, endophilins, CHMP4s and TSG101. HD-PTP is a paralog of Alix and a putative protein tyrosine phosphatase (PTP) that contains a Bro1 domain, coiled-coils, a proline-rich region (PRR) in addition to a PTP domain. We investigated interactions between HD-PTP and Alix-binding proteins. In the yeast two-hybrid assay, HD-PTP showed positive interactions with CHMP4b/Shax1, TSG101, endophilin A1 and ALG-2 but not with either RabGAPLP or CIN85. We confirmed the interactions in a mammalian system by Strep-pulldown assays in which pulldown products from the lysates of HEK293T cells expressing either Strep-tagged HD-PTP alone or co-expressing with epitope-tagged proteins were analyzed by Western blotting using specific antibodies. While Alix associated with both ALG-2 and TSG101 in a Ca2+-dependent manner, HD-PTP interacted with ALG-2 Ca2+-dependently but with TSG101 Ca2+-independently.
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Affiliation(s)
- Fumitaka Ichioka
- Department of Applied Molecular Biosciences, Graduate School of Bioagricultural Sciences, Nagoya University, Nagoya 464-8601, Japan
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Swaminathan G, Tsygankov AY. The Cbl family proteins: ring leaders in regulation of cell signaling. J Cell Physiol 2006; 209:21-43. [PMID: 16741904 DOI: 10.1002/jcp.20694] [Citation(s) in RCA: 228] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
The proto-oncogenic protein c-Cbl was discovered as the cellular form of v-Cbl, a retroviral transforming protein. This was followed over the years by important discoveries, which identified c-Cbl and other Cbl-family proteins as key players in several signaling pathways. c-Cbl has donned the role of a multivalent adaptor protein, capable of interacting with a plethora of proteins, and has been shown to positively influence certain biological processes. The identity of c-Cbl as an E3 ubiquitin ligase unveiled the existence of an important negative regulatory pathway involved in maintaining homeostasis in protein tyrosine kinase (PTK) signaling. Recent years have also seen the emergence of novel regulators of Cbl, which have provided further insights into the complexity of Cbl-influenced pathways. This review will endeavor to provide a summary of current studies focused on the effects of Cbl proteins on various biological processes and the mechanism of these effects. The major sections of the review are as follows: Structure and genomic organization of Cbl proteins; Phosphorylation of Cbl; Interactions of Cbl; Localization of Cbl; Mechanism of effects of Cbl: (a) Ubiquitylation-dependent events: This section elucidates the mechanism of Cbl-mediated downregulation of EGFR and details the PTK and non-PTKs targeted by Cbl. In addition, it addresses the functional requirements for E3 Ubiquitin ligase activity of Cbl and negative regulation of Cbl-mediated downregulation of PTKs, (b) Adaptor functions: This section discusses the mechanisms of adaptor functions of Cbl in mitogen-activated protein kinase (MAPK) activation, insulin signaling, regulation of Ras-related protein 1 (Rap1), PI-3' kinase signaling, and regulation of Rho-family GTPases and cytoskeleton; Biological functions: This section gives an account of the diverse biological functions of Cbl and includes the role of Cbl in transformation, T-cell signaling and thymus development, B-cell signaling, mast-cell degranulation, macrophage functions, bone development, neurite growth, platelet activation, muscle degeneration, and bacterial invasion; Conclusions and perspectives.
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Affiliation(s)
- Gayathri Swaminathan
- Department of Microbiology and Immunology, Temple University School of Medicine, Philadelphia, Pennsylvania, USA
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Kawata A, Iida J, Ikeda M, Sato Y, Mori H, Kansaku A, Sumita K, Fujiwara N, Rokukawa C, Hamano M, Hirabayashi S, Hata Y. CIN85 is localized at synapses and forms a complex with S-SCAM via dendrin. J Biochem 2006; 139:931-9. [PMID: 16751601 DOI: 10.1093/jb/mvj105] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Abstract
Membrane-associated guanylate kinase inverted (MAGI)-1 plays a role as a scaffold at cell junctions in non-neuronal cells, while S-SCAM, its neuronal isoform, is involved in the organization of synapses. A search for MAGI-1-interacting proteins by yeast two-hybrid screening of a kidney cDNA library yielded dendrin. As dendrin was originally reported as a brain-specific postsynaptic protein, we tested the interaction between dendrin and S-SCAM and revealed that dendrin binds to the WW domains of S-SCAM. Dendrin is known to be dendritically translated but its function is largely unknown. To gain insights into the physiological meaning of the interaction, we performed a second yeast two-hybrid screening using dendrin as a bait. We identified CIN85, an endocytic scaffold protein, as a putative dendrin-interactor. Immunocytochemistry and subcellular fractionation analysis supported the synaptic localization of CIN85. The first SH3 domain and the C-terminal region of CIN85 bind to the proline-rich region and the N-terminal region of dendrin, respectively. In vitro experiments suggest that dendrin forms a ternary complex with CIN85 and S-SCAM and that this complex formation facilitates the recruitment of dendrin and S-SCAM to vesicle-like structures where CIN85 is accumulated.
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Affiliation(s)
- Akira Kawata
- Department of Medical Biochemistry, Graduate School of Medicine, Tokyo Medical and Dental University, Tokyo 113-8519
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Konishi H, Tashiro K, Murata Y, Nabeshi H, Yamauchi E, Taniguchi H. CFBP Is a Novel Tyrosine-phosphorylated Protein That Might Function as a Regulator of CIN85/CD2AP. J Biol Chem 2006; 281:28919-31. [PMID: 16895919 DOI: 10.1074/jbc.m605693200] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
To decipher the global network of the epidermal growth factor (EGF) receptor-mediated signaling pathway, a large scale proteomic analysis of tyrosine-phosphorylated proteins was conducted. Here, we focus on characterizing a novel protein, CFBP (CIN85/CD2AP family binding protein), identified in the study. CFBP was found to be phosphorylated at tyrosine 204 upon EGF stimulation, and the CIN85/CD2AP family was identified as a binding partner. A proline-rich motif of CFBP is recognized by one of the three Src-homology 3 domains of CIN85/CD2AP, and the affinity of the interaction is regulated by the tyrosine phosphorylation of CFBP. They co-localize in actinenriched structures, and overexpression of CFBP induced morphological changes with actin reorganization. Furthermore, CFBP accelerated the EGF receptor's down-regulation by facilitating the recruitment of Cbl to the CD2AP/CIN85 complex. Two spliced variants of CFBP lacking either exon 5 or 8 are also expressed, and the variant lacking exon 5 without the proline-rich motif lacks the ability to bind to the CIN85/CD2AP family. The CFBP protein seems to play a key role in the ligand-mediated internalization and down-regulation of the EGF receptor.
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Affiliation(s)
- Hiroaki Konishi
- Institute for Enzyme Research, University of Tokushima, Tokushima 770-8503, Japan and Harima Institute at SPring-8, RIKEN, Hyogo 679-5148, Japan.
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Abstract
An earlier report showed that infected cell protein no. 0 (ICP0) of herpes simplex virus 1 (HSV-1) interacts with the SH3 domains of a recently discovered adaptor protein, CIN85. Here, we report the following. (i) ICP0 also interacts with other SH3 domain-containing proteins and, in particular, with nonneuronal members of the Src kinase family. (ii) HSV-1 infection enhanced the activating phosphorylation of Tyr416 of the members of the Src kinase family, modestly enhanced the kinase activity of Src, and posttranslationally modified at least one additional member of the Src kinase family by phosphorylation in a manner dependent on the viral gene products ICP0, unique short 3 (U(S)3), and unique long 13 (U(L)13). (iii) To define the roles of Src kinase family members, we examined the accumulation of viral proteins, DNA, and mRNA and virus yields from wild-type mouse embryo fibroblasts and sibling cells lacking Src, Fyn, and Yes (SYF-); a mutant cell line, +Src, in which Src was restored to SYF- cells; and the mutant cell line (CSK-) lacking the negative regulator Csk gene of the Src kinase family. Representative alpha, beta, and gamma2 proteins accumulated in the largest amounts in SYF- cells and the smallest amounts in +Src compared to wild-type cells. The CSK- cells yielded smaller amounts of the gamma2 protein and at least 10-fold less virus than wild-type cells. We conclude that HSV-1 proteins regulate the activities of Src family kinases to achieve optimal viral yields in the course of viral replication.
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Affiliation(s)
- Yu Liang
- The Marjorie B. Kovler Viral Oncology Laboratories, University of Chicago, 910 East 58th Street, Chicago IL 60637, USA
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Katoh K, Suzuki H, Terasawa Y, Mizuno T, Yasuda J, Shibata H, Maki M. The penta-EF-hand protein ALG-2 interacts directly with the ESCRT-I component TSG101, and Ca2+-dependently co-localizes to aberrant endosomes with dominant-negative AAA ATPase SKD1/Vps4B. Biochem J 2006; 391:677-85. [PMID: 16004603 PMCID: PMC1276969 DOI: 10.1042/bj20050398] [Citation(s) in RCA: 64] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
ALG-2 (apoptosis-linked gene 2) is a Ca2+-binding protein that belongs to the PEF (penta-EF-hand) protein family. Alix (ALG-2-interacting protein X)/AIP1 (ALG-2-interacting protein 1), one of its binding partners, interacts with TSG101 and CHMP4 (charged multivesicular body protein 4), which are components of ESCRT-I (endosomal sorting complex required for transport I) and ESCRT-III respectively. In the present study, we investigated the association between ALG-2 and ESCRT-I. By a GST (glutathione S-transferase) pull-down assay using HEK-293T (human embryonic kidney 293T) cell lysates, endogenous TSG101 and two other exogenously expressed ESCRT-I components [hVps28 (human vacuolar protein sorting 28) and hVps37A] were shown to associate with GST-ALG-2 in the presence of Ca2+. By the yeast two-hybrid assay, however, a positive interaction was observed with only TSG101 among the three ESCRT-I components, suggesting that ALG-2 associates with hVps28 and hVps37A indirectly through TSG101. Using various deletion mutants of TSG101, the central PRR (proline-rich region) was found to be sufficient for interaction with ALG-2 by the GST-pull-down assay. Direct binding of ALG-2 to the TSG101 PRR was demonstrated by an overlay assay using biotin-labelled ALG-2 as a probe. In immunofluorescence microscopic analysis of HeLa cells that overexpressed a GFP (green fluorescent protein)-fused ATPase-defective dominant-negative form of SKD1/Vps4B (GFP-SKD1(E235Q)), ALG-2 exhibited a punctate distribution at the perinuclear area and co-localized with GFP-SKD1(E235Q) to aberrant endosomes. This punctate distribution of ALG-2 was markedly diminished by treatment of HeLa cells with a membrane-permeant Ca2+ chelator. Moreover, a Ca2+-binding-defective mutant of ALG-2 did not co-localize with GFP-SKD1(E235Q). Our findings suggest that ALG-2 may function as a Ca2+-dependent accessory protein of the endosomal sorting machinery by interacting directly with TSG101 as well as with Alix.
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Affiliation(s)
- Keiichi Katoh
- *Department of Applied Molecular Biosciences, Graduate School of Bioagricultural Sciences, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8601, Japan
| | - Hidenori Suzuki
- *Department of Applied Molecular Biosciences, Graduate School of Bioagricultural Sciences, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8601, Japan
| | - Yoshinori Terasawa
- *Department of Applied Molecular Biosciences, Graduate School of Bioagricultural Sciences, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8601, Japan
| | - Takako Mizuno
- *Department of Applied Molecular Biosciences, Graduate School of Bioagricultural Sciences, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8601, Japan
| | - Jiro Yasuda
- †Fifth Biology Section for Microbiology, Department of First Forensic Science, National Research Institute of Police Science, Kashiwanoha 6-3-1, Kashiwa 277-0882, Japan
| | - Hideki Shibata
- *Department of Applied Molecular Biosciences, Graduate School of Bioagricultural Sciences, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8601, Japan
| | - Masatoshi Maki
- *Department of Applied Molecular Biosciences, Graduate School of Bioagricultural Sciences, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8601, Japan
- To whom correspondence should be addressed (email )
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Narita T, Ando A, Mikami Y, Taniyama T. Overexpression of CIN85 suppresses the growth of herpes simplex virus in HeLa cells. Exp Cell Res 2005; 311:265-71. [PMID: 16223483 DOI: 10.1016/j.yexcr.2005.09.007] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2005] [Revised: 09/12/2005] [Accepted: 09/14/2005] [Indexed: 10/25/2022]
Abstract
The adaptor protein CIN85 is widely distributed in different tissues and has three Src homology 3 (SH3) domains, a proline-rich region (PRR), and a coiled-coil domain. During studies on the function of CIN85, it was reported to form a complex with herpes simplex virus 1 (HSV-1) infected cell protein 0 (ICP0), which plays a key role in enabling viral replication. Here, we demonstrate that plaque formation by HSV-1 is reduced on HeLa cells expressing CIN85 ectopically. The PRR of CIN85 was found to be essential for the inhibition of virus growth, whereas the three SH3 domains were not required. CIN85 also suppressed HSV-1 growth in Chinese hamster ovary (CHO) cells expressing the receptor for herpes simplex virus entry (herpes virus entry mediator A; HVEM). However, immunoprecipitation experiments showed that CIN85 did not interact with HVEM directly, indicating that CIN85 is not involved in the HSV-1 cell-entry pathway, but rather in another downstream pathway. Collectively, our data indicate that CIN85 might play an important role in HSV-1 infection.
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Affiliation(s)
- Tadashi Narita
- Laboratory of Bacterial Infection and Immunity, Department of Immunology, National Institute of Infectious Diseases, 1-23-1, Toyama, Shinjuku, Tokyo 162-8640, Japan
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Yeow-Fong L, Lim L, Manser E. SNX9 as an adaptor for linking synaptojanin-1 to the Cdc42 effector ACK1. FEBS Lett 2005; 579:5040-8. [PMID: 16137687 DOI: 10.1016/j.febslet.2005.07.093] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2005] [Revised: 07/19/2005] [Accepted: 07/27/2005] [Indexed: 10/25/2022]
Abstract
Sorting nexin 9 (SNX9, also referred to as SH3PX1) is a binding partner for the non-receptor and Cdc42-associated kinase (ACK) in Drosophila and mammals. ACK1 is known to bind clathrin and influence EGF receptor endocytosis. SNX9 comprises an N-terminal Src homology domain 3 (SH3), a central PHOX homology (PX) domain, and a carboxyl-terminal coiled-coil region. In order to investigate SNX9 further we have made use of a novel in vivo biotinylation system to label various GST-SH3 domains and perform blot overlays, thereby identifying synaptojanin-1 as a partner for SNX9. Biotinylated SH3 domains were also used for specific identification of target proline-rich sequences in synaptojanin and ACK1 on synthetic peptides arrays. Direct assessment of SH3 binding efficiencies at different positions within the extensive proline-rich regions of these proteins were thus determined. While SNX9 targets a number of sequences within the proline-rich regions of synaptojanin, a single site was identified in human ACK1. By testing the association of various truncations of ACK1 with SNX9 we confirmed the dominant SNX9 binding domain in human ACK1 (residues 920-955). In the presence of SNX9 we find that synaptojanin is able to colocalize with distinct ACK1 containing vesicles, indicating that this tyrosine kinase is linked to many components involved in vesicle dynamics including clathrin, AP2 and synaptojanin-1.
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Affiliation(s)
- Lee Yeow-Fong
- GSK-IMCB Laboratory, Institute of Molecular and Cell Biology, Proteos Building, 61 Biopolis Drive, Singapore 138673, Singapore
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41
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Jozic D, Cárdenes N, Deribe YL, Moncalián G, Hoeller D, Groemping Y, Dikic I, Rittinger K, Bravo J. Cbl promotes clustering of endocytic adaptor proteins. Nat Struct Mol Biol 2005; 12:972-9. [PMID: 16228008 DOI: 10.1038/nsmb1000] [Citation(s) in RCA: 53] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2005] [Accepted: 09/13/2005] [Indexed: 11/09/2022]
Abstract
The ubiquitin ligases c-Cbl and Cbl-b play a crucial role in receptor downregulation by mediating multiple monoubiquitination of receptors and promoting their sorting for lysosomal degradation. Their function is modulated through interactions with regulatory proteins including CIN85 and PIX, which recognize a proline-arginine motif in Cbl and thus promote or inhibit receptor endocytosis. We report the structures of SH3 domains of CIN85 and beta-PIX in complex with a proline-arginine peptide from Cbl-b. Both structures reveal a heterotrimeric complex containing two SH3 domains held together by a single peptide. Trimerization also occurs in solution and is facilitated by the pseudo-symmetrical peptide sequence. Moreover, ternary complexes of CIN85 and Cbl are formed in vivo and are important for the ability of Cbl to promote epidermal growth factor receptor (EGFR) downregulation. These results provide molecular explanations for a novel mechanism by which Cbl controls receptor downregulation.
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Affiliation(s)
- Daniela Jozic
- Division of Protein Structure, National Institute for Medical Research, The Ridgeway, London NW7 1AA, UK
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Reichman C, Singh K, Liu Y, Singh S, Li H, Fajardo JE, Fiser A, Birge RB. Transactivation of Abl by the Crk II adapter protein requires a PNAY sequence in the Crk C-terminal SH3 domain. Oncogene 2005; 24:8187-99. [PMID: 16158059 DOI: 10.1038/sj.onc.1208988] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
To gain a better understanding of how Crk II regulates the function of the Abl tyrosine kinase, we explored the function of the C-terminal linker and SH3 domain, a region of Crk II that is still poorly understood. Molecular modeling, tryptophan fluorescence, and covariation sequence alignment indicate that the Crk-SH3-C has a unique binding groove and RT loop not observed in typical SH3 domains. Based on these models, we made a series of mutations in the linker and in residues predicted to destabilize the putative binding pocket and RT loop. In Abl transactivation assays, Y222F and P225A mutations in the linker resulted in strong transactivation of Abl by Crk II. However, mutations predicted to be at the surface of the Crk SH3-C were not activators of Abl. Interestingly, combinations of activating mutations of Crk II with mutations in the highly conserved PNAY sequence in the SH3-C inactivated the activating mutations, suggesting that the SH3-C is necessary for activation. Our data provide insight into the role of highly conserved residues in the Crk-SH3-C, suggesting a mechanism for how the linker and the Crk-SH3-C function in the transactivation of the Abl tyrosine kinase.
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Affiliation(s)
- Charles Reichman
- Department of Biochemistry and Molecular Biology, UMDNJ-New Jersey Medical School, 185 South Orange Avenue, Newark, NJ 07103, USA
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Segura-Morales C, Pescia C, Chatellard-Causse C, Sadoul R, Bertrand E, Basyuk E. Tsg101 and Alix interact with murine leukemia virus Gag and cooperate with Nedd4 ubiquitin ligases during budding. J Biol Chem 2005; 280:27004-12. [PMID: 15908698 DOI: 10.1074/jbc.m413735200] [Citation(s) in RCA: 82] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Retroviruses use endosomal machinery to bud out of infected cells, and various Gag proteins recruit this machinery by interacting with either of three cellular factors as follows: ubiquitin ligases of the Nedd4 family, Tsg101, or Alix/Aip1. Here we show that the murine leukemia virus Gag has the unique ability to interact with all three factors. Small interfering RNAs against Tsg101 or Alix and dominant-negative forms of Nedd4 can all reduce production of virus-like particles. However, inactivating the Nedd4-binding site abolishes budding, whereas disrupting Tsg101 or Alix binding has milder effects. Nedd4 ubiquitin ligases are therefore essential, and Tsg101 and Alix play auxiliary roles. Most interestingly, overexpression of Alix can stimulate the release of Gag, and this occurs independently of most Alix partners Tsg101, Cin85, Alg-2, and endophilins. In addition, Gag mutants that do not bind Tsg101 or Alix concentrate on late endosomes and become very sensitive to dominant-negative forms of Nedd4 that do not conjugate ubiquitin. This suggests that the direct interaction of Gag with Tsg101 and Alix favors budding from the plasma membrane and relieves a requirement for ubiquitination by Nedd4.1. Other Nedd4-dependent Gag proteins also contain binding sites for Tsg101 or Alix, suggesting that this could be a common feature of retroviruses.
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Liang Y, Kurakin A, Roizman B. Herpes simplex virus 1 infected cell protein 0 forms a complex with CIN85 and Cbl and mediates the degradation of EGF receptor from cell surfaces. Proc Natl Acad Sci U S A 2005; 102:5838-43. [PMID: 15824310 PMCID: PMC556299 DOI: 10.1073/pnas.0501253102] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Infected cell protein 0 (ICP0) is a 775-residue multifunctional herpes simplex virus protein associated with numerous functions related to transactivation of gene expression and repression of host defenses to infection. We report that an uncharted domain of ICP0 located between residues 245 and 510 contains multiple SH3 domain binding motifs similar to those required for binding to CIN85, the M(r) 85,000 protein that interacts with Cbl. CIN85 and Cbl are involved in endocytosis and negative regulation of numerous receptor tyrosine kinases. We report that ICP0 binds CIN85 in a reciprocal manner and that the complexes pulled down by ICP0 also contain Cbl. We tested the role of ICP0 in the down-regulation of receptor tyrosine kinases by using epidermal growth factor receptor (EGFR) as a prototypic receptor. In transfection assays, ICP0, in the absence of other viral genes, down-regulated EGF-dependent expression of a reporter gene (luciferase). ICP0 also down-regulated both total and cell surface levels of EGFR in EGF-independent manner. In wild-type virus-infected cells, the surface levels of EGFR were also decreased in the absence of EGF stimulation. Stimulation by EGF enhanced the decrease in surface EGFR. We conclude that ICP0 encodes SH3 domain binding sites that function to down-regulate signaling pathways associated with receptor tyrosine kinases. The results suggest that ICP0 precludes signaling to the infected cells through the receptor tyrosine kinases.
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Affiliation(s)
- Yu Liang
- The Marjorie B. Kovler Viral Oncology Laboratories, University of Chicago, 910 East 58th Street, Chicago, IL 60637, USA
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Monzo P, Gauthier NC, Keslair F, Loubat A, Field CM, Le Marchand-Brustel Y, Cormont M. Clues to CD2-associated protein involvement in cytokinesis. Mol Biol Cell 2005; 16:2891-902. [PMID: 15800069 PMCID: PMC1142433 DOI: 10.1091/mbc.e04-09-0773] [Citation(s) in RCA: 57] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Cytokinesis requires membrane trafficking coupled to actin remodeling and involves a number of trafficking molecules. CD2-associated protein (CD2AP) has been implicated in dynamic actin remodeling and membrane trafficking that occurs during endocytosis leading to the degradative pathway. In this study, we present several arguments for its implication in cytokinesis. First, endogenous CD2AP was found concentrated in the narrow region of the midzone microtubules during anaphase and in the midbody during late telophase. Moreover, we found that CD2AP is a membrane- and not a microtubule-associated protein. Second, the overexpression of the first two Src homology 3 domains of CD2AP, which are responsible for this localization, led to a significant increase in the rate of cell multinucleation. Third, the CD2AP small interfering RNA interfered with the cell separation, indicating that CD2AP is required for HeLa cells cytokinesis. Fourth, using the yeast two-hybrid system, we found that CD2AP interacted with anillin, a specific cleavage furrow component, and the two proteins colocalized at the midbody. Both CD2AP and anillin were found phosphorylated early in mitosis and also CD2AP phosphorylation was coupled to its delocalization from membrane to cytosol. All these observations led us to propose CD2AP as a new player in cytokinesis.
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Affiliation(s)
- Pascale Monzo
- Institut National de la Santé et de la Recherche Médicale U568, Faculté de Médecine, 06107 Nice Cedex 02, France
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46
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Borthwick EB, Korobko IV, Luke C, Drel VR, Fedyshyn YY, Ninkina N, Drobot LB, Buchman VL. Multiple domains of Ruk/CIN85/SETA/CD2BP3 are involved in interaction with p85alpha regulatory subunit of PI 3-kinase. J Mol Biol 2004; 343:1135-46. [PMID: 15476827 DOI: 10.1016/j.jmb.2004.08.075] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2004] [Revised: 08/12/2004] [Accepted: 08/20/2004] [Indexed: 11/23/2022]
Abstract
Ruk/CIN85/SETA/CD2BP3 and CD2AP/CMS/METS-1 comprise a new family of proteins involved in such fundamental processes as clustering of receptors and rearrangement of the cytoskeleton in regions of specialised cell-cell contacts, ligand-activated internalisation and targeting to lysosome degradation pathway of receptor tyrosine kinases, and apoptotic cell death. As typical adapter proteins they execute these functions by interacting with other signalling molecules via multiple protein-protein interaction interfaces: SH3 domains, Pro-rich region and coiled-coil domain. It has been previously demonstrated that Ruk is able to interact with the p85alpha regulatory subunit of PI 3-kinase and that the SH3 domain of p85alpha is required for this interaction. However, later observations hinted at a more complex mechanism than simple one-way SH3-Pro-rich interaction. Because interaction with p85alpha was suggested to be important for pro-apoptotic activity of the long isoform of Ruk, Ruk(l)/CIN85, we carried out detailed studies of the mechanism of this interaction and demonstrated that multiple domains are involved; SH3 domains of Ruk are required and sufficient for efficient interaction with full-length p85alpha but the SH3 domain of p85alpha is vital for their "activation" by ousting them from intramolecular interaction with the Pro-rich region of Ruk. Our data also suggest that homodimerisation via C-terminal coiled-coil domain affects both intra- and intermolecular interactions of Ruk proteins.
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Affiliation(s)
- Emma B Borthwick
- Department of Preclinical Veterinary Sciences, University of Edinburgh, Summerhall, Edinburgh EH9 1QH, UK
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Kowanetz K, Husnjak K, Höller D, Kowanetz M, Soubeyran P, Hirsch D, Schmidt MHH, Pavelic K, De Camilli P, Randazzo PA, Dikic I. CIN85 associates with multiple effectors controlling intracellular trafficking of epidermal growth factor receptors. Mol Biol Cell 2004; 15:3155-66. [PMID: 15090612 PMCID: PMC452573 DOI: 10.1091/mbc.e03-09-0683] [Citation(s) in RCA: 105] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
CIN85 is a multidomain adaptor protein involved in Cbl-mediated down-regulation of epidermal growth factor (EGF) receptors. CIN85 src homology 3 domains specifically bind to a proline-arginine (PxxxPR) motif in Cbl, and this association seems to be important for EGF receptor endocytosis. Here, we report identification of novel CIN85 effectors, all containing one or more PxxxPR motifs, that are indispensable for their mutual interactions. These effectors include phosphatidyl-inositol phosphatases SHIP-1 and synaptojanin 2B1, Arf GTPase-activating proteins ASAP1 and ARAP3, adaptor proteins Hip1R and STAP1, and a Rho exchange factor, p115Rho GEF. Acting as a molecular scaffold, CIN85 clusters its effectors and recruits them to high-molecular-weight complexes in cytosolic extracts of cells. Further characterization of CIN85 binding to ASAP1 revealed that formation of the complex is independent on cell stimulation. Overexpression of ASAP1 increased EGF receptor recycling, whereas ASAP1 containing mutated PxxxPR motif failed to promote this event. We propose that CIN85 functions as a scaffold molecule that binds to numerous endocytic accessory proteins, thus controlling distinct steps in trafficking of EGF receptors along the endocytic and recycling pathways.
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Affiliation(s)
- Katarzyna Kowanetz
- Institute of Biochemistry II, Goethe University Medical School, 60590 Frankfurt, Germany
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48
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Stagljar I. Finding Partners: Emerging Protein Interaction Technologies Applied to Signaling Networks. Sci Signal 2003; 2003:pe56. [PMID: 14679289 DOI: 10.1126/stke.2132003pe56] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
Signal transduction pathways play essential roles in cell differentiation, proliferation, and survival. Their precise regulation is achieved through specific protein-protein interactions that mediate the assembly of protein complexes in response to different signals. Disturbances of the normal protein-protein interactions within signaling pathways can lead to many diseases, including cancer. In this review, Stagljar aims to highlight the emerging protein interaction technologies that are advancing the field of signal transduction. These approaches include stable isotope labeling by amino acids in cell culture, SH2 profiling, target-assisted iterative screening, and the split-ubiquitin membrane yeast two-hybrid system. Although still at an early stage, these technologies show promise as useful methods for the characterization of novel components of various signal transduction pathways.
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Affiliation(s)
- Igor Stagljar
- Institute of Veterinary Biochemistry and Molecular Biology, University of Zurich, Winterthurerstrasse 190, CH-8057 Zurich, Switzerland.
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