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Sun JH, Huang M, Fang Z, Li TX, Wu TT, Chen Y, Quan DP, Xu YY, Wang YM, Yang Y, Zou JL. Nerve bundle formation during the promotion of peripheral nerve regeneration: collagen VI-neural cell adhesion molecule 1 interaction. Neural Regen Res 2021; 17:1023-1033. [PMID: 34558529 PMCID: PMC8552870 DOI: 10.4103/1673-5374.324861] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
The formation of nerve bundles, which is partially regulated by neural cell adhesion molecule 1 (NCAM1), is important for neural network organization during peripheral nerve regeneration. However, little is known about how the extracellular matrix (ECM) microenvironment affects this process. Here, we seeded dorsal root ganglion tissue blocks on different ECM substrates of peripheral nerve ECM-derived matrix-gel, Matrigel, laminin 521, collagen I, and collagen IV, and observed well-aligned axon bundles growing in the peripheral nerve ECM-derived environment. We confirmed that NCAM1 is necessary but not sufficient to trigger this phenomenon. A protein interaction assay identified collagen VI as an extracellular partner of NCAM1 in the regulation of axonal fasciculation. Collagen VI interacted with NCAM1 by directly binding to the FNIII domain, thereby increasing the stability of NCAM1 at the axolemma. Our in vivo experiments on a rat sciatic nerve defect model also demonstrated orderly nerve bundle regeneration with improved projection accuracy and functional recovery after treatment with 10 mg/mL Matrigel and 20 μg/mL collagen VI. These findings suggest that the collagen VI-NCAM1 pathway plays a regulatory role in nerve bundle formation. This study was approved by the Animal Ethics Committee of Guangzhou Medical University (approval No. GY2019048) on April 30, 2019.
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Affiliation(s)
- Jia-Hui Sun
- Institute of Neuroscience and the Second Affiliated Hospital of Guangzhou Medical University, Key Laboratory of Neurogenetics and Channelopathies of Guangdong Province and the Ministry of Education of China; Key Laboratory of Neurological Function and Health, School of Basic Medical Sciences, Guangzhou Medical University, Guangzhou, Guangdong Province, China
| | - Ming Huang
- Zhongshan School of Medicine, Sun Yatsen University, Ministry of Education, Guangzhou, Guangdong Province, China
| | - Zhou Fang
- Key Laboratory of Neurological Function and Health, School of Basic Medical Sciences, Guangzhou Medical University, Guangzhou, Guangdong Province, China
| | - Tian-Xiao Li
- Department of Pharmacy, Hospital of Stomatology, Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, Guangdong Province, China
| | - Ting-Ting Wu
- Key Laboratory of Neurological Function and Health, School of Basic Medical Sciences, Guangzhou Medical University, Guangzhou, Guangdong Province, China
| | - Yi Chen
- Zhongshan School of Medicine, Sun Yatsen University, Ministry of Education, Guangzhou, Guangdong Province, China
| | - Da-Ping Quan
- Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education, School of Chemistry, Sun Yat-sen University, Ministry of Education, Guangzhou, Guangdong Province, China
| | - Ying-Ying Xu
- Key Laboratory of Neurological Function and Health, School of Basic Medical Sciences, Guangzhou Medical University, Guangzhou, Guangdong Province, China
| | - Yu-Ming Wang
- Institute of Neuroscience and the Second Affiliated Hospital of Guangzhou Medical University, Key Laboratory of Neurogenetics and Channelopathies of Guangdong Province and the Ministry of Education of China; Key Laboratory of Neurological Function and Health, School of Basic Medical Sciences, Guangzhou Medical University, Guangzhou, Guangdong Province, China
| | - Yi Yang
- Department of Orthopedic Trauma and Microsurgery, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong Province, China
| | - Jian-Long Zou
- Institute of Neuroscience and the Second Affiliated Hospital of Guangzhou Medical University, Key Laboratory of Neurogenetics and Channelopathies of Guangdong Province and the Ministry of Education of China; Key Laboratory of Neurological Function and Health, School of Basic Medical Sciences, Guangzhou Medical University, Guangzhou, Guangdong Province, China
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Tidemand FG, Zunino A, Johansen NT, Hansen AF, Westh P, Mosegaard K, Arleth L. Semi-empirical Analysis of Complex ITC Data from Protein-Surfactant Interactions. Anal Chem 2021; 93:12698-12706. [PMID: 34498849 DOI: 10.1021/acs.analchem.1c02558] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Isothermal titration calorimetry (ITC) is a widely used method to determine binding affinities and thermodynamics in ligand-receptor interactions, but it also has the capability of providing detailed information on much more complex events. However, the lack of available methods to analyze ITC data is limiting the use of the technique in such multifaceted cases. Here, we present the software ANISPROU. Through a semi-empirical approach that allows for extraction of quantitative information from complex ITC data, ANISPROU solves an inverse problem where three parameters describing a set of predefined functions must be found. In analogy to strategies adopted in other scientific fields, such as geophysics, imaging, and many others, it employs an optimization algorithm which minimizes the difference between calculated and experimental data. In contrast to the existing methods, ANISPROU provides automated and objective analysis of ITC data on sodium dodecyl sulfate (SDS)-induced protein unfolding, and in addition, more information can be extracted from the data. Here, data series on SDS-mediated protein unfolding is analyzed, and binding isotherms and thermodynamic information on the unfolding events are extracted. The obtained binding isotherms as well as the enthalpy of different events are similar to those obtained using the existing manual methods, but our methodology ensures a more robust result, as the entire data set is used instead of single data points. We foresee that ANISPROU will be useful in other cases with complex enthalpograms, for example, in cases with coupled interactions in biomolecular, polymeric, and amphiphilic systems including cases where both structural changes and interactions occur simultaneously.
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Affiliation(s)
- Frederik G Tidemand
- Niels Bohr Institute, University of Copenhagen, Universitetsparken 5, 2100 Copenhagen, Denmark
| | - Andrea Zunino
- Niels Bohr Institute, University of Copenhagen, Tagensvej 16, 2200 Copenhagen, Denmark.,Department of Earth Sciences, ETH Zürich, Sonneggstrasse 5, 8092 Zürich, Switzerland
| | - Nicolai T Johansen
- Niels Bohr Institute, University of Copenhagen, Universitetsparken 5, 2100 Copenhagen, Denmark
| | - Anna Freja Hansen
- Niels Bohr Institute, University of Copenhagen, Universitetsparken 5, 2100 Copenhagen, Denmark
| | - Peter Westh
- Department of Biotechnology and Biomedicine, Technical University of Denmark, Søltofts Plads, 2800 Kgs. Lyngby, Denmark
| | - Klaus Mosegaard
- Niels Bohr Institute, University of Copenhagen, Tagensvej 16, 2200 Copenhagen, Denmark
| | - Lise Arleth
- Niels Bohr Institute, University of Copenhagen, Universitetsparken 5, 2100 Copenhagen, Denmark
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Flego M, Colotti G, Ascione A, Dupuis ML, Petrucci E, Riccioni R, Andreotti M, Raggi C, Boe A, Barca S, Gellini M, Vella S, Mallano A. Isolation and preliminary characterization of a human 'phage display'-derived antibody against neural adhesion molecule-1 antigen interfering with fibroblast growth factor receptor-1 binding. Hum Antibodies 2021; 29:63-84. [PMID: 33164927 DOI: 10.3233/hab-200431] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
BACKGROUND The NCAM or CD56 antigen is a cell surface glycoprotein belonging to the immunoglobulin super-family involved in cell-cell and cell-matrix adhesion. NCAM is also over-expressed in many tumour types and is considered a tumour associated antigen, even if its role and biological mechanisms implicated in tumour progression and metastasis have not yet to be elucidated. In particular, it is quite well documented the role of the interaction between the NCAM protein and the fibroblast growth factor receptor-1 in metastasis and invasion, especially in the ovarian cancer progression. OBJECTIVE Here we describe the isolation and preliminary characterization of a novel human anti-NCAM single chain Fragment variable antibody able to specifically bind NCAM-expressing cells, including epithelial ovarian cancer cells. METHODS The antibody was isolate by phage display selection and was characterized by ELISA, FACS analysis and SPR experiments. Interference in EOC migration was analyzed by scratch test. RESULTS It binds a partially linear epitope lying in the membrane proximal region of two fibronectin-like domains with a dissociation constant of 3.43 × 10-8 M. Interestingly, it was shown to interfere with the NCAM-FGFR1 binding and to partially decrease migration of EOC cells. CONCLUSIONS According to our knowledge, this is the first completely human antibody able to interfere with this newly individuated cancer mechanism.
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Affiliation(s)
- Michela Flego
- National Center for Global Health, Istituto Superiore di Sanità, Rome, Italy
| | - Gianni Colotti
- Institute of Molecular Biology and Pathology, Italian National Research Council, c/o Department Biochemical Sciences, Sapienza University of Rome, Rome, Italy
| | - Alessandro Ascione
- National Center for Control and Evaluation of Medicine, Istituto Superiore di Sanità, Rome, Italy
| | - Maria Luisa Dupuis
- Center for Gender Specific Medicine, Istituto Superiore di Sanità, Rome, Italy
| | - Eleonora Petrucci
- Department of Oncology and Molecular Medicine, Istituto Superiore di Sanità, Rome, Italy
| | - Roberta Riccioni
- Department of Oncology and Molecular Medicine, Istituto Superiore di Sanità, Rome, Italy
| | - Mauro Andreotti
- National Center for Global Health, Istituto Superiore di Sanità, Rome, Italy
| | - Carla Raggi
- National Center for Control and Evaluation of Medicine, Istituto Superiore di Sanità, Rome, Italy
| | - Alessandra Boe
- Core Facilities, Istituto Superiore di Sanità, Rome, Italy
| | - Stefano Barca
- National Center for Drug Research and Evaluation Unit of Preclinical and Clinical Evaluation of Medicinal Drugs, Istituto Superiore di Sanità, Rome, Italy
| | - Mara Gellini
- National Center for Global Health, Istituto Superiore di Sanità, Rome, Italy
| | - Stefano Vella
- National Center for Global Health, Istituto Superiore di Sanità, Rome, Italy
| | - Alessandra Mallano
- National Center for Global Health, Istituto Superiore di Sanità, Rome, Italy
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Xie Y, Su N, Yang J, Tan Q, Huang S, Jin M, Ni Z, Zhang B, Zhang D, Luo F, Chen H, Sun X, Feng JQ, Qi H, Chen L. FGF/FGFR signaling in health and disease. Signal Transduct Target Ther 2020; 5:181. [PMID: 32879300 PMCID: PMC7468161 DOI: 10.1038/s41392-020-00222-7] [Citation(s) in RCA: 316] [Impact Index Per Article: 79.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2020] [Revised: 05/28/2020] [Accepted: 06/15/2020] [Indexed: 12/13/2022] Open
Abstract
Growing evidences suggest that the fibroblast growth factor/FGF receptor (FGF/FGFR) signaling has crucial roles in a multitude of processes during embryonic development and adult homeostasis by regulating cellular lineage commitment, differentiation, proliferation, and apoptosis of various types of cells. In this review, we provide a comprehensive overview of the current understanding of FGF signaling and its roles in organ development, injury repair, and the pathophysiology of spectrum of diseases, which is a consequence of FGF signaling dysregulation, including cancers and chronic kidney disease (CKD). In this context, the agonists and antagonists for FGF-FGFRs might have therapeutic benefits in multiple systems.
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Affiliation(s)
- Yangli Xie
- Department of Wound Repair and Rehabilitation Medicine, State Key Laboratory of Trauma, Burns and Combined Injury, Trauma Center, Research Institute of Surgery, Daping Hospital, Army Medical University, Chongqing, China.
| | - Nan Su
- Department of Wound Repair and Rehabilitation Medicine, State Key Laboratory of Trauma, Burns and Combined Injury, Trauma Center, Research Institute of Surgery, Daping Hospital, Army Medical University, Chongqing, China
| | - Jing Yang
- Department of Wound Repair and Rehabilitation Medicine, State Key Laboratory of Trauma, Burns and Combined Injury, Trauma Center, Research Institute of Surgery, Daping Hospital, Army Medical University, Chongqing, China
| | - Qiaoyan Tan
- Department of Wound Repair and Rehabilitation Medicine, State Key Laboratory of Trauma, Burns and Combined Injury, Trauma Center, Research Institute of Surgery, Daping Hospital, Army Medical University, Chongqing, China
| | - Shuo Huang
- Department of Wound Repair and Rehabilitation Medicine, State Key Laboratory of Trauma, Burns and Combined Injury, Trauma Center, Research Institute of Surgery, Daping Hospital, Army Medical University, Chongqing, China
| | - Min Jin
- Department of Wound Repair and Rehabilitation Medicine, State Key Laboratory of Trauma, Burns and Combined Injury, Trauma Center, Research Institute of Surgery, Daping Hospital, Army Medical University, Chongqing, China
| | - Zhenhong Ni
- Department of Wound Repair and Rehabilitation Medicine, State Key Laboratory of Trauma, Burns and Combined Injury, Trauma Center, Research Institute of Surgery, Daping Hospital, Army Medical University, Chongqing, China
| | - Bin Zhang
- Department of Wound Repair and Rehabilitation Medicine, State Key Laboratory of Trauma, Burns and Combined Injury, Trauma Center, Research Institute of Surgery, Daping Hospital, Army Medical University, Chongqing, China
| | - Dali Zhang
- Department of Wound Repair and Rehabilitation Medicine, State Key Laboratory of Trauma, Burns and Combined Injury, Trauma Center, Research Institute of Surgery, Daping Hospital, Army Medical University, Chongqing, China
| | - Fengtao Luo
- Department of Wound Repair and Rehabilitation Medicine, State Key Laboratory of Trauma, Burns and Combined Injury, Trauma Center, Research Institute of Surgery, Daping Hospital, Army Medical University, Chongqing, China
| | - Hangang Chen
- Department of Wound Repair and Rehabilitation Medicine, State Key Laboratory of Trauma, Burns and Combined Injury, Trauma Center, Research Institute of Surgery, Daping Hospital, Army Medical University, Chongqing, China
| | - Xianding Sun
- Department of Wound Repair and Rehabilitation Medicine, State Key Laboratory of Trauma, Burns and Combined Injury, Trauma Center, Research Institute of Surgery, Daping Hospital, Army Medical University, Chongqing, China
| | - Jian Q Feng
- Department of Biomedical Sciences, Texas A&M University College of Dentistry, Dallas, TX, 75246, USA
| | - Huabing Qi
- Department of Wound Repair and Rehabilitation Medicine, State Key Laboratory of Trauma, Burns and Combined Injury, Trauma Center, Research Institute of Surgery, Daping Hospital, Army Medical University, Chongqing, China.
| | - Lin Chen
- Department of Wound Repair and Rehabilitation Medicine, State Key Laboratory of Trauma, Burns and Combined Injury, Trauma Center, Research Institute of Surgery, Daping Hospital, Army Medical University, Chongqing, China.
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5
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Rasmussen KK, Falkesgaard MH, Winther M, Roed NK, Quistgaard CL, Teisen MN, Edslev SM, Petersen DL, Aljubouri A, Christensen C, Thulstrup PW, Lo Leggio L, Teilum K, Walmod PS. NCAM2 Fibronectin type-III domains form a rigid structure that binds and activates the Fibroblast Growth Factor Receptor. Sci Rep 2018; 8:8957. [PMID: 29895898 PMCID: PMC5997747 DOI: 10.1038/s41598-018-27089-7] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2018] [Accepted: 05/24/2018] [Indexed: 11/17/2022] Open
Abstract
NCAM1 and NCAM2 have ectodomains consisting of 5 Ig domains followed by 2 membrane-proximal FnIII domains. In this study we investigate and compare the structures and functions of these FnIII domains. The NCAM1 and -2 FnIII2 domains both contain a Walker A motif. In NCAM1 binding of ATP to this motif interferes with NCAM1 binding to FGFR. We obtained a structural model of the NCAM2 FnIII2 domain by NMR spectroscopy, and by titration with an ATP analogue we show that the NCAM2 Walker A motif does not bind ATP. Small angle X-ray scattering (SAXS) data revealed that the NCAM2 FnIII1-2 double domain exhibits a very low degree of flexibility. Moreover, recombinant NCAM2 FnIII domains bind FGFR in vitro, and the FnIII1-2 double domain induces neurite outgrowth in a concentration-dependent manner through activation of FGFR. Several synthetic NCAM1-derived peptides induce neurite outgrowth via FGFR. Only 2 of 5 peptides derived from similar regions in NCAM2 induce neurite outgrowth, but the most potent of these peptides stimulates neurite outgrowth through FGFR-dependent activation of the Ras-MAPK pathway. These results reveal that the NCAM2 FnIII domains form a rigid structure that binds and activates FGFR in a manner related to, but different from NCAM1.
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Affiliation(s)
- Kim Krighaar Rasmussen
- Biological Chemistry, Department of Chemistry, University of Copenhagen, Copenhagen, Denmark.
- Laboratory of Neural Plasticity, Department of Neuroscience and Pharmacology, University of Copenhagen, Copenhagen, Denmark.
- Structural Biology and NMR Laboratory, Department of Biology, University of Copenhagen, Copenhagen, Denmark.
| | - Maria Hansen Falkesgaard
- Laboratory of Neural Plasticity, Department of Neuroscience and Pharmacology, University of Copenhagen, Copenhagen, Denmark
| | - Malene Winther
- Laboratory of Neural Plasticity, Department of Neuroscience and Pharmacology, University of Copenhagen, Copenhagen, Denmark
| | - Nikolaj Kulahin Roed
- Laboratory of Neural Plasticity, Department of Neuroscience and Pharmacology, University of Copenhagen, Copenhagen, Denmark
| | - Christine Louise Quistgaard
- Laboratory of Neural Plasticity, Department of Neuroscience and Pharmacology, University of Copenhagen, Copenhagen, Denmark
| | - Marie Nygaard Teisen
- Laboratory of Neural Plasticity, Department of Neuroscience and Pharmacology, University of Copenhagen, Copenhagen, Denmark
| | - Sofie Marie Edslev
- Laboratory of Neural Plasticity, Department of Neuroscience and Pharmacology, University of Copenhagen, Copenhagen, Denmark
| | - David Leander Petersen
- Laboratory of Neural Plasticity, Department of Neuroscience and Pharmacology, University of Copenhagen, Copenhagen, Denmark
| | - Ali Aljubouri
- Laboratory of Neural Plasticity, Department of Neuroscience and Pharmacology, University of Copenhagen, Copenhagen, Denmark
| | - Claus Christensen
- Laboratory of Neural Plasticity, Department of Neuroscience and Pharmacology, University of Copenhagen, Copenhagen, Denmark
| | - Peter Waaben Thulstrup
- Biological Chemistry, Department of Chemistry, University of Copenhagen, Copenhagen, Denmark
| | - Leila Lo Leggio
- Biological Chemistry, Department of Chemistry, University of Copenhagen, Copenhagen, Denmark
| | - Kaare Teilum
- Structural Biology and NMR Laboratory, Department of Biology, University of Copenhagen, Copenhagen, Denmark
| | - Peter Schledermann Walmod
- Laboratory of Neural Plasticity, Department of Neuroscience and Pharmacology, University of Copenhagen, Copenhagen, Denmark
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6
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Slapšak U, Salzano G, Amin L, Abskharon RNN, Ilc G, Zupančič B, Biljan I, Plavec J, Giachin G, Legname G. The N Terminus of the Prion Protein Mediates Functional Interactions with the Neuronal Cell Adhesion Molecule (NCAM) Fibronectin Domain. J Biol Chem 2016; 291:21857-21868. [PMID: 27535221 DOI: 10.1074/jbc.m116.743435] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2016] [Indexed: 12/22/2022] Open
Abstract
The cellular form of the prion protein (PrPC) is a highly conserved glycoprotein mostly expressed in the central and peripheral nervous systems by different cell types in mammals. A misfolded, pathogenic isoform, denoted as prion, is related to a class of neurodegenerative diseases known as transmissible spongiform encephalopathy. PrPC function has not been unequivocally clarified, and it is rather defined as a pleiotropic protein likely acting as a dynamic cell surface scaffolding protein for the assembly of different signaling modules. Among the variety of PrPC protein interactors, the neuronal cell adhesion molecule (NCAM) has been studied in vivo, but the structural basis of this functional interaction is still a matter of debate. Here we focused on the structural determinants responsible for human PrPC (HuPrP) and NCAM interaction using stimulated emission depletion (STED) nanoscopy, SPR, and NMR spectroscopy approaches. PrPC co-localizes with NCAM in mouse hippocampal neurons, and this interaction is mainly mediated by the intrinsically disordered PrPC N-terminal tail, which binds with high affinity to the NCAM fibronectin type-3 domain. NMR structural investigations revealed surface-interacting epitopes governing the interaction between HuPrP N terminus and the second module of the NCAM fibronectin type-3 domain. Our data provided molecular details about the interaction between HuPrP and the NCAM fibronectin domain, and revealed a new role of PrPC N terminus as a dynamic and functional element responsible for protein-protein interaction.
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Affiliation(s)
- Urška Slapšak
- From the Slovenian NMR Centre, National Institute of Chemistry, Hajdrihova 19, SI-1000 Ljubljana, Slovenia
| | - Giulia Salzano
- the Laboratory of Prion Biology, Department of Neuroscience, Scuola Internazionale Superiore di Studi Avanzati (SISSA), Via Bonomea 265, Trieste I-34136, Italy
| | - Ladan Amin
- the Laboratory of Prion Biology, Department of Neuroscience, Scuola Internazionale Superiore di Studi Avanzati (SISSA), Via Bonomea 265, Trieste I-34136, Italy
| | - Romany N N Abskharon
- the Structural Biology Research Center, Vrije Universiteit Brussel, VIB, Pleinlaan 2, 1050, Brussels, Belgium, the National Institute of Oceanography and Fisheries (NIOF), 11516 Cairo, Egypt, and the Van Andel Research Institute, Grand Rapids, Michigan 49503
| | - Gregor Ilc
- From the Slovenian NMR Centre, National Institute of Chemistry, Hajdrihova 19, SI-1000 Ljubljana, Slovenia, the EN-FIST Centre of Excellence, Dunajska 156, SI-1000 Ljubljana, Slovenia
| | - Blaž Zupančič
- From the Slovenian NMR Centre, National Institute of Chemistry, Hajdrihova 19, SI-1000 Ljubljana, Slovenia
| | - Ivana Biljan
- the Department of Chemistry, Faculty of Science, University of Zagreb, Horvatovac 102A, Zagreb HR-10000, Croatia
| | - Janez Plavec
- From the Slovenian NMR Centre, National Institute of Chemistry, Hajdrihova 19, SI-1000 Ljubljana, Slovenia, the EN-FIST Centre of Excellence, Dunajska 156, SI-1000 Ljubljana, Slovenia, the Department of Chemistry and Biochemistry, Faculty of Chemistry and Chemical Technology, University of Ljubljana, Večna pot 113, SI-1000 Ljubljana, Slovenia,
| | - Gabriele Giachin
- the Laboratory of Prion Biology, Department of Neuroscience, Scuola Internazionale Superiore di Studi Avanzati (SISSA), Via Bonomea 265, Trieste I-34136, Italy, the Structural Biology Group, European Synchrotron Radiation Facility (ESRF), 71 Avenue des Martyrs, 38000-Grenoble, France
| | - Giuseppe Legname
- the Laboratory of Prion Biology, Department of Neuroscience, Scuola Internazionale Superiore di Studi Avanzati (SISSA), Via Bonomea 265, Trieste I-34136, Italy,
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7
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Kelly CM, Muzard J, Brooks BR, Lee GU, Buchete NV. Structure and dynamics of the fibronectin-III domains of Aplysia californica cell adhesion molecules. Phys Chem Chem Phys 2016; 17:9634-43. [PMID: 25729787 DOI: 10.1039/c4cp05307a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Due to their homophilic and heterophilic binding properties, cell adhesion molecules (CAMs) such as integrin, cadherin and the immunoglobulin superfamily CAMs are of primary importance in cell-cell and cell-substrate interactions, signalling pathways and other crucial biological processes. We study the molecular structures and conformational dynamics of the two fibronectin type III (Fn-III) extracellular domains of the Aplysia californica CAM (apCAM) protein, by constructing and probing an atomically-detailed structural model based on apCAM's homology with other CAMs. The stability and dynamic properties of the Fn-III domains, individually and in tandem, are probed and analysed using all-atom explicit-solvent molecular dynamics (MD) simulations and normal mode analysis of their corresponding elastic network models. The refined structural model of the Fn-III tandem of apCAM reveals a specific pattern of amino acid interactions that controls the stability of the β-sheet rich structure and could affect apCAM's response to physical or chemical changes of its environment. It also exposes the important role of several specific charged residues in modulating the structural properties of the linker segment connecting the two Fn-III domains, as well as of the inter-domain interface.
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Affiliation(s)
- Catherine M Kelly
- School of Physics, University College Dublin, Belfield, Dublin 4, Ireland.
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Colley KJ, Kitajima K, Sato C. Polysialic acid: biosynthesis, novel functions and applications. Crit Rev Biochem Mol Biol 2014; 49:498-532. [PMID: 25373518 DOI: 10.3109/10409238.2014.976606] [Citation(s) in RCA: 108] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
As an anti-adhesive, a reservoir for key biological molecules, and a modulator of signaling, polysialic acid (polySia) is critical for nervous system development and maintenance, promotes cancer metastasis, tissue regeneration and repair, and is implicated in psychiatric diseases. In this review, we focus on the biosynthesis and functions of mammalian polySia, and the use of polySia in therapeutic applications. PolySia modifies a small subset of mammalian glycoproteins, with the neural cell adhesion molecule, NCAM, serving as its major carrier. Studies show that mammalian polysialyltransferases employ a unique recognition mechanism to limit the addition of polySia to a select group of proteins. PolySia has long been considered an anti-adhesive molecule, and its impact on cell adhesion and signaling attributed directly to this property. However, recent studies have shown that polySia specifically binds neurotrophins, growth factors, and neurotransmitters and that this binding depends on chain length. This work highlights the importance of considering polySia quality and quantity, and not simply its presence or absence, as its various roles are explored. The capsular polySia of neuroinvasive bacteria allows these organisms to evade the host immune response. While this "stealth" characteristic has made meningitis vaccine development difficult, it has also made polySia a worthy replacement for polyetheylene glycol in the generation of therapeutic proteins with low immunogenicity and improved circulating half-lives. Bacterial polysialyltransferases are more promiscuous than the protein-specific mammalian enzymes, and new studies suggest that these enzymes have tremendous therapeutic potential, especially for strategies aimed at neural regeneration and tissue repair.
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Affiliation(s)
- Karen J Colley
- Department of Biochemistry and Molecular Genetics, University of Illinois at Chicago , Chicago, IL , USA and
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9
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Chondroitin sulfate proteoglycans: structure-function relationship with implication in neural development and brain disorders. BIOMED RESEARCH INTERNATIONAL 2014; 2014:642798. [PMID: 24955366 PMCID: PMC4052930 DOI: 10.1155/2014/642798] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/28/2014] [Revised: 04/28/2014] [Accepted: 04/28/2014] [Indexed: 12/12/2022]
Abstract
Chondroitin sulfate proteoglycans (CSPGs) are extracellular matrix components that contain two structural parts with distinct functions: a protein core and glycosaminoglycan (GAG) side chains. CSPGs are known to be involved in important cell processes like cell adhesion and growth, receptor binding, or cell migration. It is recognized that the presence of CSPGs is critical in neuronal growth mechanisms including axon guidance following injury of nervous system components such as spinal cord and brain. CSPGs are upregulated in the central nervous system after injury and participate in the inhibition of axon regeneration mainly through their GAG side chains. Recently, it was shown that some CSPGs members like aggrecan, versican, and neurocan were strongly involved in brain disorders like bipolar disorder (BD), schizophrenia, and ADHD. In this paper, we present the chemical structure-biological functions relationship of CSPGs, both in health state and in genetic disorders, addressing methods represented by genome-wide and crystallographic data as well as molecular modeling and quantitative structure-activity relationship.
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10
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Choy CT, Kim H, Lee JY, Williams DM, Palethorpe D, Fellows G, Wright AJ, Laing K, Bridges LR, Howe FA, Kim SH. Anosmin-1 contributes to brain tumor malignancy through integrin signal pathways. Endocr Relat Cancer 2014; 21:85-99. [PMID: 24189182 PMCID: PMC3869950 DOI: 10.1530/erc-13-0181] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Anosmin-1, encoded by the KAL1 gene, is an extracellular matrix (ECM)-associated protein which plays essential roles in the establishment of olfactory and GNRH neurons during early brain development. Loss-of-function mutations of KAL1 results in Kallmann syndrome with delayed puberty and anosmia. There is, however, little comprehension of its role in the developed brain. As reactivation of developmental signal pathways often takes part in tumorigenesis, we investigated if anosmin-1-mediated cellular mechanisms associated with brain tumors. Our meta-analysis of gene expression profiles of patients' samples and public microarray datasets indicated that KAL1 mRNA was significantly upregulated in high-grade primary brain tumors compared with the normal brain and low-grade tumors. The tumor-promoting capacity of anosmin-1 was demonstrated in the glioblastoma cell lines, where anosmin-1 enhanced cell motility and proliferation. Notably, anosmin-1 formed a part of active β1 integrin complex, inducing downstream signaling pathways. ShRNA-mediated knockdown of anosmin-1 attenuated motility and growth of tumor cells and induced apoptosis. Anosmin-1 may also enhance the invasion of tumor cells within the ECM by modulating cell adhesion and activating extracellular proteases. In a mouse xenograft model, anosmin-1-expressing tumors grew faster, indicating the role of anosmin-1 in tumor microenvironment in vivo. Combined, these data suggest that anosmin-1 can facilitate tumor cell proliferation, migration, invasion, and survival. Therefore, although the normal function of anosmin-1 is required in the proper development of GNRH neurons, overexpression of anosmin-1 in the developed brain may be an underlying mechanism for some brain tumors.
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Affiliation(s)
- Catherine T Choy
- Division of Biomedical SciencesSt George's Medical School, University of LondonCranmer Terrace, London, SW17 0REUK
| | - Haseong Kim
- Department of Electrical and Electronic EngineeringImperial College LondonExhibition Road, London, SW7 2AZUK
| | - Ji-Young Lee
- Division of Biomedical SciencesSt George's Medical School, University of LondonCranmer Terrace, London, SW17 0REUK
| | - David M Williams
- Division of Biomedical SciencesSt George's Medical School, University of LondonCranmer Terrace, London, SW17 0REUK
| | - David Palethorpe
- Division of Biomedical SciencesSt George's Medical School, University of LondonCranmer Terrace, London, SW17 0REUK
| | - Greg Fellows
- Academic Neurosurgery UnitSt George's Medical School, University of LondonCranmer Terrace, London, SW17 0REUK
| | - Alan J Wright
- Division of Biomedical SciencesSt George's Medical School, University of LondonCranmer Terrace, London, SW17 0REUK
| | - Ken Laing
- Division of Clinical SciencesSt George's Medical School, University of LondonCranmer Terrace, London, SW17 0REUK
| | - Leslie R Bridges
- Department of Cellular PathologySt George's Medical School, University of LondonCranmer Terrace, London, SW17 0REUK
| | - Franklyn A Howe
- Division of Cardiac and Vascular SciencesSt George's Medical School, University of LondonCranmer Terrace, London, SW17 0REUK
| | - Soo-Hyun Kim
- Division of Biomedical SciencesSt George's Medical School, University of LondonCranmer Terrace, London, SW17 0REUK
- Correspondence should be addressed to S-H Kim ()
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11
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Brennaman LH, Moss ML, Maness PF. EphrinA/EphA-induced ectodomain shedding of neural cell adhesion molecule regulates growth cone repulsion through ADAM10 metalloprotease. J Neurochem 2013; 128:267-79. [DOI: 10.1111/jnc.12468] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2013] [Revised: 09/24/2013] [Accepted: 09/25/2013] [Indexed: 12/15/2022]
Affiliation(s)
- Leann H. Brennaman
- Department of Biochemistry and Biophysics; University of North Carolina School of Medicine; Chapel Hill North Carolina USA
| | | | - Patricia F. Maness
- Department of Biochemistry and Biophysics; University of North Carolina School of Medicine; Chapel Hill North Carolina USA
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12
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Turner CA, Watson SJ, Akil H. The fibroblast growth factor family: neuromodulation of affective behavior. Neuron 2012; 76:160-74. [PMID: 23040813 DOI: 10.1016/j.neuron.2012.08.037] [Citation(s) in RCA: 98] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/31/2012] [Indexed: 12/20/2022]
Abstract
In this review, we propose a broader view of the role of the fibroblast growth factor (FGF) family in modulating brain function. We suggest that some of the FGF ligands together with the FGF receptors are altered in individuals with affective disorder and modulate emotionality in animal models. Thus, we propose that members of the FGF family may be genetic predisposing factors for anxiety, depression, or substance abuse; that they play a key organizing role during early development but continue to play a central role in neuroplasticity in adulthood; and that they work not only over extended time frames, but also via rapid signaling mechanisms, allowing them to exert an "on-line" influence on behavior. Therefore, the FGF family appears to be a prototype of "switch genes" that are endowed with organizational and modulatory properties across the lifespan, and that may represent molecular candidates as biomarkers and treatment targets for affective and addictive disorders.
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Affiliation(s)
- Cortney A Turner
- Molecular and Behavioral Neuroscience Institute, University of Michigan, Ann Arbor, MI 48109, USA.
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13
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Volkmer H, Schreiber J, Rathjen FG. Regulation of adhesion by flexible ectodomains of IgCAMs. Neurochem Res 2012; 38:1092-9. [PMID: 23054071 DOI: 10.1007/s11064-012-0888-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2012] [Accepted: 09/10/2012] [Indexed: 01/06/2023]
Abstract
To perform their diverse biological functions the adhesion activities of the cell adhesion molecules of the immunoglobulin superfamily (IgCAMs) might be regulated by local clustering, proteolytical shedding of their ectodomains or rapid recycling to and from the plasma membrane. Another form of regulation of adhesion might be obtained through flexible ectodomains of IgCAMs which adopt distinct conformations and which in turn modulate their adhesion activity. Here, we discuss variations in the conformation of the extracellular domains of CEACAM1 and CAR that might influence their binding and signaling activities. Furthermore, we concentrate on alternative splicing of single domains and short segments in the extracellular regions of L1 subfamily members that might affect the organization of the N-terminal located Ig-like domains. In particular, we discuss variations of the linker sequence between Ig-like domains 2 and 3 (D2 and D3) that is required for the horseshoe conformation.
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Affiliation(s)
- Hansjürgen Volkmer
- Naturwissenschaftliches und Medizinisches Institut an der Universität Tübingen, Markwiesenstr. 55, 72770 Reutlingen, Germany
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14
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Jiao YL, Wang SJ, Lv MS, Fang YW, Liu S. An evolutionary analysis of the GH57 amylopullulanases based on the DOMON_glucodextranase_like domains. J Basic Microbiol 2012; 53:231-9. [DOI: 10.1002/jobm.201100530] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2011] [Accepted: 01/18/2012] [Indexed: 11/11/2022]
Affiliation(s)
- Yu-Liang Jiao
- College of Marine Sciences; HuaiHai Institute of Technology; Lianyungang, People's Republic of China
| | - Shu-Jun Wang
- College of Marine Sciences; HuaiHai Institute of Technology; Lianyungang, People's Republic of China
| | - Ming-Sheng Lv
- College of Marine Sciences; HuaiHai Institute of Technology; Lianyungang, People's Republic of China
| | - Yao-Wei Fang
- College of Marine Sciences; HuaiHai Institute of Technology; Lianyungang, People's Republic of China
| | - Shu Liu
- College of Marine Sciences; HuaiHai Institute of Technology; Lianyungang, People's Republic of China
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15
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Winther M, Berezin V, Walmod PS. NCAM2/OCAM/RNCAM: Cell adhesion molecule with a role in neuronal compartmentalization. Int J Biochem Cell Biol 2012; 44:441-6. [DOI: 10.1016/j.biocel.2011.11.020] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2011] [Revised: 11/18/2011] [Accepted: 11/22/2011] [Indexed: 10/14/2022]
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16
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Kulahin N, Kristensen O, Rasmussen KK, Olsen L, Rydberg P, Vestergaard B, Kastrup JS, Berezin V, Bock E, Walmod PS, Gajhede M. Structural model and trans-interaction of the entire ectodomain of the olfactory cell adhesion molecule. Structure 2011; 19:203-11. [PMID: 21300289 DOI: 10.1016/j.str.2010.12.014] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2010] [Revised: 11/10/2010] [Accepted: 12/12/2010] [Indexed: 01/12/2023]
Abstract
The ectodomain of olfactory cell adhesion molecule (OCAM/NCAM2/RNCAM) consists of five immunoglobulin (Ig) domains (IgI-V), followed by two fibronectin-type 3 (Fn3) domains (Fn3I-II). A complete structural model of the entire ectodomain of human OCAM has been assembled from crystal structures of six recombinant proteins corresponding to different regions of the ectodomain. The model is the longest experimentally based composite structural model of an entire IgCAM ectodomain. It displays an essentially linear arrangement of IgI-V, followed by bends between IgV and Fn3I and between Fn3I and Fn3II. Proteins containing IgI-IgII domains formed stable homodimers in solution and in crystals. Dimerization could be disrupted in vitro by mutations in the dimer interface region. In conjunction with the bent ectodomain conformation, which can position IgI-V parallel with the cell surface, the IgI-IgII dimerization enables OCAM-mediated trans-interactions with an intercellular distance of about 20 nm, which is consistent with that observed in synapses.
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Affiliation(s)
- Nikolaj Kulahin
- Protein Laboratory, Department of Neuroscience and Pharmacology, Faculty of Health Sciences, University of Copenhagen, DK-2200 Copenhagen N, Denmark
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17
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X-ray structural studies of the entire extracellular region of the serine/threonine kinase PrkC from Staphylococcus aureus. Biochem J 2011; 435:33-41. [DOI: 10.1042/bj20101643] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Bacterial serine/threonine kinases modulate a wide number of cellular processes. The serine/threonine kinase PrkC from the human pathogen Staphylococcus aureus was also shown to induce germination of Bacillus subtilis spores, in response to cell wall muropeptides. The presence of muropeptides in the bacterial extracellular milieu is a strong signal that the growing conditions are promising. In the present paper, we report the X-ray structure of the entire extracellular region of PrkC from S. aureus. This structure reveals that the extracellular region of PrkC, EC-PrkC, is a linear modular structure composed of three PASTA (penicillin binding-associated and serine/threonine kinase-associated) domains and an unpredicted C-terminal domain, which presents the typical features of adhesive proteins. Using several solution techniques, we also found that EC-PrkC shows no tendency to dimerize even in the presence of high concentrations of muropeptides. X-ray structural results obtained in the present study provide molecular clues into the mechanism of muropeptide-induced PrkC activation.
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18
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Thompson MG, Foley DA, Swartzentruber KG, Colley KJ. Sequences at the interface of the fifth immunoglobulin domain and first fibronectin type III repeat of the neural cell adhesion molecule are critical for its polysialylation. J Biol Chem 2010; 286:4525-34. [PMID: 21131353 DOI: 10.1074/jbc.m110.200386] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Polysialic acid is an anti-adhesive glycan that modifies a select group of mammalian proteins. The primary substrate of the polysialyltransferases (polySTs) is the neural cell adhesion molecule (NCAM). Polysialic acid negatively regulates cell adhesion, is required for proper brain development, and is expressed in specific areas of the adult brain where it promotes on-going cell migration and synaptic plasticity. The first fibronectin type III repeat (FN1) of NCAM is required for polysialylation of the N-glycans on the adjacent immunoglobulin-like domain (Ig5), and acidic residues on the surface of FN1 play a role in polyST recognition. Recent work demonstrated that the FN1 domain from the unpolysialylated olfactory cell adhesion molecule (OCAM) was able to partially replace NCAM FN1 (Foley, D. A., Swartzentruber, K. G., Thompson, M. G., Mendiratta, S. S., and Colley, K. J. (2010) J. Biol. Chem. 285, 35056-35067). Here we demonstrate that individually replacing three identical regions shared by NCAM and OCAM FN1, (500)PSSP(503) (PSSP), (526)GGVPI(530) (GGVPI), and (580)NGKG(583) (NGKG), dramatically reduces NCAM polysialylation. In addition, we show that the polyST, ST8SiaIV/PST, specifically binds NCAM and that this binding requires the FN1 domain. Replacing the FN1 PSSP sequences and the acidic patch residues decreases NCAM-polyST binding, whereas replacing the GGVPI and NGKG sequences has no effect. The location of GGVPI and NGKG in loops that flank the Ig5-FN1 linker and the proximity of PSSP to this linker suggest that GGVPI and NGKG sequences may be critical for stabilizing the Ig5-FN1 linker, whereas PSSP may play a dual role maintaining the Ig5-FN1 interface and a polyST recognition site.
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Affiliation(s)
- Matthew G Thompson
- Department of Biochemistry and Molecular Genetics, University of Illinois, College of Medicine, Chicago, Illinois 60607, USA
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19
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Goustin AS, Abou-Samra AB. The "thrifty" gene encoding Ahsg/Fetuin-A meets the insulin receptor: Insights into the mechanism of insulin resistance. Cell Signal 2010; 23:980-90. [PMID: 21087662 DOI: 10.1016/j.cellsig.2010.11.003] [Citation(s) in RCA: 61] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2010] [Revised: 10/23/2010] [Accepted: 11/03/2010] [Indexed: 12/24/2022]
Abstract
Ahsg (fetuin-A) is a 55-59kDa phosphorylated glycoprotein synthesized in the adult predominantly by hepatocytes, from which it enters the circulation. When dysregulated, this glycoprotein operates to influence the clinical sequelae of insulin resistance-type 2 diabetes and cardiovascular disease. The pathological sequelae likely arise from two separable molecular "faces" of Ahsg-one acting at the level of the insulin receptor and a second face influencing ectopic biomineralization in the intima. A detailed understanding of these two functional faces of Ahsg is not yet clear for lack of structural studies. Ahsg has a physiological role in the biomineralization of bone, which when dysregulated can lead to ectopic calcification of soft tissues in the vasculature. Ahsg has a second physiological function in regulating how insulin signals through its receptor, a transmembrane tyrosine kinase. Dysregulation of this "face" of Ahsg results in morbid sequelae such as impaired glucose disposal and fatty liver. Ahsg binds to tandem fibronectin type 3 (Fn3) domains present in the 194 amino acid residue extracellular portion of the β-subunit of the insulin receptor, distant from the high-affinity pocket formed by two complementing α-subunits where insulin binds. Only two proteins are known to bind directly to the insulin receptor ectodomain - insulin and Ahsg - the former turns on the receptor's intrinsic tyrosine kinase (TK) activity, and the latter shuts it down. Recent X-ray crystallographic studies of the ectodomain of the insulin receptor now sharpen our understanding of the receptor's extracellular α-subunit and linked β-subunit. Ahsg genotype and its circulating level have been correlated with body morphometrics (obese versus lean and visceral adiposity) in epidemiological studies enrolling thousands of patients. Epidemiological studies from the clinic reveal high levels of circulating Ahsg in insulin resistance and diabetes. This review endeavors to explain how one protein can mediate diverse pathologies, but specifically addresses its metabolic "face" blunting insulin receptor activity, an action leading to insulin resistance.
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Affiliation(s)
- Anton-Scott Goustin
- Department of Internal Medicine and Center for Molecular Medicine and Genetics, Wayne State University School of Medicine, Detroit, MI 48201, USA.
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20
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Yang F, West AP, Bjorkman PJ. Crystal structure of a hemojuvelin-binding fragment of neogenin at 1.8Å. J Struct Biol 2010; 174:239-44. [PMID: 20971194 PMCID: PMC3074981 DOI: 10.1016/j.jsb.2010.10.005] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2010] [Revised: 10/12/2010] [Accepted: 10/13/2010] [Indexed: 01/24/2023]
Abstract
Neogenin is a type I transmembrane glycoprotein with a large ectodomain containing tandem immunoglobulin-like and fibronectin type III (FNIII) domains. Closely related to the tumor suppressor gene DCC, neogenin functions in critical biological processes through binding to various ligands, including netrin, repulsive guidance molecules, and the iron regulatory protein hemojuvelin. We previously reported that neogenin binds to hemojuvelin through its membrane-proximal fifth and sixth FNIII domains (FN5-6), with domain 6 (FN6) contributing the majority of critical binding interactions. Here we present the crystal structure of FN5-6, the hemojuvelin-binding fragment of human neogenin, at 1.8Å. The two FNIII domains are orientated nearly linearly, a domain arrangement most similar to that of a tandem FNIII-containing fragment within the cytoplasmic tail of the β4 integrin. By mapping surface-exposed residues that differ between neogenin FN5-6 and the comparable domains from DCC, which does not bind hemojuvelin, we identified a potential hemojuvelin-binding site on neogenin FN6. Neogenin FN5, which does not bind hemojuvelin in isolation, exhibits a highly electropositive surface, which may be involved in interactions with negatively-charged polysaccharides or phospholipids in the membrane bilayer. The neogenin FN5-6 structure can be used to facilitate a molecular understanding of neogenin's interaction with hemojuvelin to regulate iron homeostasis and with hemojuvelin-related repulsive guidance molecules to mediate axon guidance.
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Affiliation(s)
- Fan Yang
- Graduate Option in Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, CA 91125, USA
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21
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Foley DA, Swartzentruber KG, Lavie A, Colley KJ. Structure and mutagenesis of neural cell adhesion molecule domains: evidence for flexibility in the placement of polysialic acid attachment sites. J Biol Chem 2010; 285:27360-27371. [PMID: 20573953 DOI: 10.1074/jbc.m110.140038] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
The addition of alpha2,8-polysialic acid to the N-glycans of the neural cell adhesion molecule, NCAM, is critical for brain development and plays roles in synaptic plasticity, learning and memory, neuronal regeneration, and the growth and invasiveness of cancer cells. Our previous work indicates that the polysialylation of two N-glycans located on the fifth immunoglobulin domain (Ig5) of NCAM requires the presence of specific sequences in the adjacent fibronectin type III repeat (FN1). To understand the relationship of these two domains, we have solved the crystal structure of the NCAM Ig5-FN1 tandem. Unexpectedly, the structure reveals that the sites of Ig5 polysialylation are on the opposite face from the FN1 residues previously found to be critical for N-glycan polysialylation, suggesting that the Ig5-FN1 domain relationship may be flexible and/or that there is flexibility in the placement of Ig5 glycosylation sites for polysialylation. To test the latter possibility, new Ig5 glycosylation sites were engineered and their polysialylation tested. We observed some flexibility in glycosylation site location for polysialylation and demonstrate that the lack of polysialylation of a glycan attached to Asn-423 may be in part related to a lack of terminal processing. The data also suggest that, although the polysialyltransferases do not require the Ig5 domain for NCAM recognition, their ability to engage with this domain is necessary for polysialylation to occur on Ig5 N-glycans.
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Affiliation(s)
- Deirdre A Foley
- Department of Biochemistry and Molecular Genetics, University of Illinois College of Medicine, Chicago, Illinois 60607
| | - Kristin G Swartzentruber
- Department of Biochemistry and Molecular Genetics, University of Illinois College of Medicine, Chicago, Illinois 60607
| | - Arnon Lavie
- Department of Biochemistry and Molecular Genetics, University of Illinois College of Medicine, Chicago, Illinois 60607
| | - Karen J Colley
- Department of Biochemistry and Molecular Genetics, University of Illinois College of Medicine, Chicago, Illinois 60607.
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22
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Neuritogenic and neuroprotective properties of peptide agonists of the fibroblast growth factor receptor. Int J Mol Sci 2010; 11:2291-305. [PMID: 20640153 PMCID: PMC2904917 DOI: 10.3390/ijms11062291] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2010] [Accepted: 05/21/2010] [Indexed: 11/17/2022] Open
Abstract
Fibroblast growth factor receptors (FGFRs) interact with their cognate ligands, FGFs, and with a number of cell adhesion molecules (CAMs), such as the neural cell adhesion molecule (NCAM), mediating a wide range of events during the development and maintenance of the nervous system. Determination of protein structure, in silico modeling and biological studies have recently resulted in the identification of FGFR binding peptides derived from various FGFs and NCAM mimicking the effects of these molecules with regard to their neuritogenic and neuroprotective properties. This review focuses on recently developed functional peptide agonists of FGFR with possible therapeutic potential.
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23
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Rich RL, Myszka DG. Grading the commercial optical biosensor literature-Class of 2008: 'The Mighty Binders'. J Mol Recognit 2010; 23:1-64. [PMID: 20017116 DOI: 10.1002/jmr.1004] [Citation(s) in RCA: 109] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Optical biosensor technology continues to be the method of choice for label-free, real-time interaction analysis. But when it comes to improving the quality of the biosensor literature, education should be fundamental. Of the 1413 articles published in 2008, less than 30% would pass the requirements for high-school chemistry. To teach by example, we spotlight 10 papers that illustrate how to implement the technology properly. Then we grade every paper published in 2008 on a scale from A to F and outline what features make a biosensor article fabulous, middling or abysmal. To help improve the quality of published data, we focus on a few experimental, analysis and presentation mistakes that are alarmingly common. With the literature as a guide, we want to ensure that no user is left behind.
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Affiliation(s)
- Rebecca L Rich
- Center for Biomolecular Interaction Analysis, University of Utah, Salt Lake City, UT 84132, USA
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25
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Synthetic NCAM-derived ligands of the fibroblast growth factor receptor. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2010; 663:355-72. [PMID: 20017033 DOI: 10.1007/978-1-4419-1170-4_22] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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26
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Palser AL, Norman AL, Saffell JL, Reynolds R. Neural cell adhesion molecule stimulates survival of premyelinating oligodendrocytes via the fibroblast growth factor receptor. J Neurosci Res 2009; 87:3356-68. [DOI: 10.1002/jnr.22248] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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28
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Lee SK, Jeon EK, Kim YJ, Seo SH, Kim CD, Lim JS, Lee JH. A global gene expression analysis of the peripheral blood mononuclear cells reveals the gene expression signature in psoriasis. Ann Dermatol 2009; 21:237-42. [PMID: 20523796 DOI: 10.5021/ad.2009.21.3.237] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2008] [Accepted: 12/06/2008] [Indexed: 11/08/2022] Open
Abstract
BACKGROUND Psoriasis is a chronic inflammatory skin disease that affects approximately 1~3% of the general population. OBJECTIVE We performed cDNA microarray analysis with using the dendrimer labelling method to investigate the gene expression profile in the peripheral blood mononuclear cells (PBMCs) of psoriatic patients. METHODS The peripheral blood mononuclear cells of 5 patients with psoriasis and 8 control subjects were used in the gene expression analyses of psoriasis. RESULTS We identified 212 differentially expressed genes that showed at least a two-fold induction and/or reduction in psoriatic patients. Among those, 63 genes, including CD44, CD56 and IL7R, were induced, while 139 genes, including the sphingosine kinase 1 and p16-INK genes, were reduced in the psoriatic patients. CONCLUSION We can speculate that these genes may have a role for the pathogenesis of psoriasis via their affecting different cellular functions. Our results suggest a possible mechanism by which activated immune cells migrate from the blood to the skin in psoriatic patients, and we provide novel putative targets for developing drugs to treat psoriasis.
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Affiliation(s)
- Sang-Keun Lee
- College of Oriental Medicine, Daejeon University, Daejeon, Korea
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29
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Hu Y, Guimond SE, Travers P, Cadman S, Hohenester E, Turnbull JE, Kim SH, Bouloux PM. Novel mechanisms of fibroblast growth factor receptor 1 regulation by extracellular matrix protein anosmin-1. J Biol Chem 2009; 284:29905-20. [PMID: 19696444 DOI: 10.1074/jbc.m109.049155] [Citation(s) in RCA: 58] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Activation of fibroblast growth factor (FGF) signaling is initiated by a multiprotein complex formation between FGF, FGF receptor (FGFR), and heparan sulfate proteoglycan on the cell membrane. Cross-talk with other factors could affect this complex assembly and modulate the biological response of cells to FGF. We have previously demonstrated that anosmin-1, a glycosylated extracellular matrix protein, interacts with the FGFR1 signaling complex and enhances its activity in an IIIc isoform-specific and HS-dependent manner. The molecular mechanism of anosmin-1 action on FGFR1 signaling, however, remains unknown. Here, we show that anosmin-1 directly binds to FGFR1 with high affinity. This interaction involves domains in the N terminus of anosmin-1 (cysteine-rich region, whey acidic protein-like domain and the first fibronectin type III domain) and the D2-D3 extracellular domains of FGFR1. In contrast, anosmin-1 binds to FGFR2IIIc with much lower affinity and displays negligible binding to FGFR3IIIc. We also show that FGFR1-bound anosmin-1, although capable of binding to FGF2 alone, cannot bind to a FGF2.heparin complex, thus preventing FGFR1.FGF2.heparin complex formation. By contrast, heparin-bound anosmin-1 binds to pre-formed FGF2.FGFR1 complex, generating an anosmin-1.FGFR1.FGF2.heparin complex. Furthermore, a functional interaction between anosmin-1 and the FGFR1 signaling complex is demonstrated by immunofluorescence co-localization and Transwell migration assays where anosmin-1 was shown to induce opposing effects during chemotaxis of human neuronal cells. Our study provides molecular and cellular evidence for a modulatory action of anosmin-1 on FGFR1 signaling, whereby binding of anosmin-1 to FGFR1 and heparin can play a dual role in assembly and activity of the ternary FGFR1.FGF2.heparin complex.
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Affiliation(s)
- Youli Hu
- Centre for Neuroendocrinology, University College London Medical School, Royal Free Campus, London NW32PF.
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30
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Kulahin N, Li S, Kiselyov V, Bock E, Berezin V. Identification of neural cell adhesion molecule L1-derived neuritogenic ligands of the fibroblast growth factor receptor. J Neurosci Res 2009; 87:1806-12. [DOI: 10.1002/jnr.22014] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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31
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Soroka V, Kasper C, Poulsen FM. WITHDRAWN: Structural Biology of NCAM. Neurochem Res 2008. [PMID: 18758952 DOI: 10.1007/s11064-008-9837-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/13/2008] [Indexed: 01/18/2023]
Affiliation(s)
- Vladislav Soroka
- Protein Laboratory, Institute of Neuroscience and Pharmacology, Panum Institute, Blegdamsvej 3 C, DK-2200, Copenhagen, Denmark,
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32
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Hansen SMM, Køhler LB, Li S, Kiselyov V, Christensen C, Owczarek S, Bock E, Berezin V. NCAM-derived peptides function as agonists for the fibroblast growth factor receptor. J Neurochem 2008; 106:2030-41. [PMID: 18624916 DOI: 10.1111/j.1471-4159.2008.05544.x] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
The neural cell adhesion molecule (NCAM) directly interacts with the fibroblast growth factor receptor (FGFR). Both fibronectin type III (FN3) modules of NCAM are involved in this interaction. One of the NCAM-FGFR contact sites has been localized recently to the upper N-terminal part of the second NCAM FN3 module encompassing the F and G beta-strands and the interconnecting loop region. Here, we investigated whether any of the six putative strand-loop-strand regions in the first NCAM FN3 module are involved in FGFR interactions. Peptide sequences encompassing these regions, termed encamins, were synthesized and tested for their ability to bind and activate FGFR. Encamins localized to the N-terminal part of the first FN3 module did not interact with FGFR, whereas encamins localized to the C-terminal part, termed EncaminA, C and E, bound to and activated FGFR. The encamins induced FGFR-dependent neurite outgrowth, and EncaminC and E promoted neuronal survival and enhanced pre-synaptic function. In conclusion, the interaction between NCAM and FGFR probably involves multiple contact sites at an interface formed by the two NCAM FN3 modules and FGFR, and encamins could constitute important pharmacological tools for the study of specific functional aspects of NCAM, including neuroprotection and modulation of plasticity.
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Affiliation(s)
- Stine M M Hansen
- Protein Laboratory, Department of Neuroscience and Pharmacology, University of Copenhagen, Copenhagen, Denmark
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Hansen SM, Li S, Bock E, Berezin V. WITHDRAWN: Synthetic NCAM-derived Ligands of the Fibroblast Growth Factor Receptor. Neurochem Res 2008. [PMID: 18427984 DOI: 10.1007/s11064-008-9707-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/03/2008] [Indexed: 10/22/2022]
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Jacobsen J, Kiselyov V, Bock E, Berezin V. A peptide motif from the second fibronectin module of the neural cell adhesion molecule, NCAM, NLIKQDDGGSPIRHY, is a binding site for the FGF receptor. Neurochem Res 2008; 33:2532-9. [PMID: 18368482 DOI: 10.1007/s11064-008-9680-2] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2007] [Accepted: 03/14/2008] [Indexed: 01/08/2023]
Abstract
The mechanism of fibroblast growth factor receptor (FGFR) activation by the neural cell adhesion molecule (NCAM) is not well understood. A motif in the second NCAM fibronectin type III (FN3) module, termed FGL, has by means of nuclear magnetic resonance (NMR) and surface plasmon resonance (SPR) analyses been demonstrated to be involved in NCAM-FGFR interactions. An FGFR activation motif (FRM) in the first NCAM FN3 module also has been suggested to take part in NCAM interactions with FGFR. Here, we show for the first time that a peptide motif in the second NCAM FN3 module, different from the previously described FGL motif (NLIKQDDGGSPIRHY; termed BCL) binds and activates FGFR and induces FGFR-dependent neurite outgrowth in cultures of cerebellar granule neurons. Our results provide evidence that the BCL motif is one of the multiple FGFR binding sites in NCAM.
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Affiliation(s)
- Jacob Jacobsen
- Protein Laboratory, Department of Neuroscience and Pharmacology, Panum Institute, University of Copenhagen, Building 24.2, Blegdamsvej 3, 2200, Copenhagen N, Denmark
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