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  1. Article ; Online: Structural studies of the MMP-3 interaction with triple-helical collagen introduce new roles for the enzyme in tissue remodelling

    Szymon W. Manka / Dominique Bihan / Richard W. Farndale

    Scientific Reports, Vol 9, Iss 1, Pp 1-

    2019  Volume 14

    Abstract: Abstract Matrix metalloproteinase-3 (MMP-3) participates in normal extracellular matrix turnover during embryonic development, organ morphogenesis and wound healing, and in tissue-destruction associated with aneurysm, cancer, arthritis and heart failure. ...

    Abstract Abstract Matrix metalloproteinase-3 (MMP-3) participates in normal extracellular matrix turnover during embryonic development, organ morphogenesis and wound healing, and in tissue-destruction associated with aneurysm, cancer, arthritis and heart failure. Despite its inability to cleave triple-helical collagens, MMP-3 can still bind to them, but the mechanism, location and role of binding are not known. We used the Collagen Toolkits, libraries of triple-helical peptides that embrace the entire helical domains of collagens II and III, to map MMP-3 interaction sites. The enzyme recognises five sites on collagen II and three sites on collagen III. They share a glycine-phenylalanine-hydroxyproline/alanine (GFO/A) motif that is recognised by the enzyme in a context-dependent manner. Neither MMP-3 zymogen (proMMP-3) nor the individual catalytic (Cat) and hemopexin (Hpx) domains of MMP-3 interact with the peptides, revealing cooperative binding of both domains to the triple helix. The Toolkit binding data combined with molecular modelling enabled us to deduce the putative collagen-binding mode of MMP-3, where all three collagen chains make contacts with the enzyme in the valley running across both Cat and Hpx domains. The observed binding pattern casts light on how MMP-3 could regulate collagen turnover and compete with various collagen-binding proteins regulating cell adhesion and proliferation.
    Keywords Medicine ; R ; Science ; Q
    Language English
    Publishing date 2019-12-01T00:00:00Z
    Publisher Nature Publishing Group
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  2. Article ; Online: Data on hyper-activation of GPVI signalling in obese patients

    María N. Barrachina / Irene Izquierdo / Lidia Hermida-Nogueira / Aurelio M. Sueiro / Esteban Guitián / Felipe F. Casanueva / Richard W. Farndale / Masaaki Moroi / Stephanie M. Jung / María Pardo / Ángel García

    Data in Brief, Vol 23, Iss , Pp - (2019)

    Towards the identification of novel antiplatelet targets in obesity

    2019  

    Abstract: This data article is associated with the manuscript “GPVI surface expression and signalling pathway activation are increased in platelets from obese patients: elucidating potential anti-atherothrombotic targets in obesity” [1]. The study refers to a ... ...

    Abstract This data article is associated with the manuscript “GPVI surface expression and signalling pathway activation are increased in platelets from obese patients: elucidating potential anti-atherothrombotic targets in obesity” [1]. The study refers to a combination of different approaches in order to identify platelet-derived biomarkers in obesity. A total of 34 obese patients and their lean-matched controls were included in the study. We carried out a proteomic and functional (aggregation assays) analysis to find alterations in platelet-derived signalling pathways. After that, biochemical and mechanistic (flow cytometry assays) approaches were done in order to confirm a hyperactivation of the GPVI-related signalling pathway.
    Keywords Computer applications to medicine. Medical informatics ; R858-859.7 ; Science (General) ; Q1-390
    Language English
    Publishing date 2019-04-01T00:00:00Z
    Publisher Elsevier
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  3. Article ; Online: An activating mutation reveals a second binding mode of the integrin α2 I domain to the GFOGER motif in collagens.

    Federico Carafoli / Samir W Hamaia / Dominique Bihan / Erhard Hohenester / Richard W Farndale

    PLoS ONE, Vol 8, Iss 7, p e

    2013  Volume 69833

    Abstract: The GFOGER motif in collagens (O denotes hydroxyproline) represents a high-affinity binding site for all collagen-binding integrins. Other GxOGER motifs require integrin activation for maximal binding. The E318W mutant of the integrin α2β1 I domain ... ...

    Abstract The GFOGER motif in collagens (O denotes hydroxyproline) represents a high-affinity binding site for all collagen-binding integrins. Other GxOGER motifs require integrin activation for maximal binding. The E318W mutant of the integrin α2β1 I domain displays a relaxed collagen specificity, typical of an active state. E318W binds more strongly than the wild-type α2 I domain to GMOGER, and forms a 2:1 complex with a homotrimeric, collagen-like, GFOGER peptide. Crystal structure analysis of this complex reveals two E318W I domains, A and B, bound to a single triple helix. The E318W I domains are virtually identical to the collagen-bound wild-type I domain, suggesting that the E318W mutation activates the I domain by destabilising the unligated conformation. E318W I domain A interacts with two collagen chains similarly to wild-type I domain (high-affinity mode). E318W I domain B makes favourable interactions with only one collagen chain (low-affinity mode). This observation suggests that single GxOGER motifs in the heterotrimeric collagens V and IX may support binding of activated integrins.
    Keywords Medicine ; R ; Science ; Q
    Subject code 500
    Language English
    Publishing date 2013-01-01T00:00:00Z
    Publisher Public Library of Science (PLoS)
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  4. Article ; Online: Proline provides site-specific flexibility for in vivo collagen

    Wing Ying Chow / Chris J. Forman / Dominique Bihan / Anna M. Puszkarska / Rakesh Rajan / David G. Reid / David A. Slatter / Lucy J. Colwell / David J. Wales / Richard W. Farndale / Melinda J. Duer

    Scientific Reports, Vol 8, Iss 1, Pp 1-

    2018  Volume 13

    Abstract: Abstract Fibrillar collagens have mechanical and biological roles, providing tissues with both tensile strength and cell binding sites which allow molecular interactions with cell-surface receptors such as integrins. A key question is: how do collagens ... ...

    Abstract Abstract Fibrillar collagens have mechanical and biological roles, providing tissues with both tensile strength and cell binding sites which allow molecular interactions with cell-surface receptors such as integrins. A key question is: how do collagens allow tissue flexibility whilst maintaining well-defined ligand binding sites? Here we show that proline residues in collagen glycine-proline-hydroxyproline (Gly-Pro-Hyp) triplets provide local conformational flexibility, which in turn confers well-defined, low energy molecular compression-extension and bending, by employing two-dimensional 13C-13C correlation NMR spectroscopy on 13C-labelled intact ex vivo bone and in vitro osteoblast extracellular matrix. We also find that the positions of Gly-Pro-Hyp triplets are highly conserved between animal species, and are spatially clustered in the currently-accepted model of molecular ordering in collagen type I fibrils. We propose that the Gly-Pro-Hyp triplets in fibrillar collagens provide fibril “expansion joints” to maintain molecular ordering within the fibril, thereby preserving the structural integrity of ligand binding sites.
    Keywords 13Cγ Chemical Shifts ; Proline Ring ; Collagen Model Peptides ; Collagen Triple Helix ; Backbone Dihedrals ; Medicine ; R ; Science ; Q
    Subject code 500
    Language English
    Publishing date 2018-09-01T00:00:00Z
    Publisher Nature Portfolio
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  5. Article ; Online: Discoidin domain receptors promote α1β1- and α2β1-integrin mediated cell adhesion to collagen by enhancing integrin activation.

    Huifang Xu / Dominique Bihan / Francis Chang / Paul H Huang / Richard W Farndale / Birgit Leitinger

    PLoS ONE, Vol 7, Iss 12, p e

    2012  Volume 52209

    Abstract: The discoidin domain receptors, DDR1 and DDR2, are receptor tyrosine kinases that bind to and are activated by collagens. Similar to collagen-binding β1 integrins, the DDRs bind to specific motifs within the collagen triple helix. However, these two ... ...

    Abstract The discoidin domain receptors, DDR1 and DDR2, are receptor tyrosine kinases that bind to and are activated by collagens. Similar to collagen-binding β1 integrins, the DDRs bind to specific motifs within the collagen triple helix. However, these two types of collagen receptors recognize distinct collagen sequences. While GVMGFO (O is hydroxyproline) functions as a major DDR binding motif in fibrillar collagens, integrins bind to sequences containing Gxx'GEx". The DDRs are thought to regulate cell adhesion, but their roles have hitherto only been studied indirectly. In this study we used synthetic triple-helical collagen-derived peptides that incorporate either the DDR-selective GVMGFO motif or integrin-selective motifs, such as GxOGER and GLOGEN, in order to selectively target either type of receptor and resolve their contributions to cell adhesion. Our data using HEK293 cells show that while cell adhesion to collagen I was completely inhibited by anti-integrin blocking antibodies, the DDRs could mediate cell attachment to the GVMGFO motif in an integrin-independent manner. Cell binding to GVMGFO was independent of DDR receptor signalling and occurred with limited cell spreading, indicating that the DDRs do not mediate firm adhesion. However, blocking the interaction of DDR-expressing cells with collagen I via the GVMGFO site diminished cell adhesion, suggesting that the DDRs positively modulate integrin-mediated cell adhesion. Indeed, overexpression of the DDRs or activation of the DDRs by the GVMGFO ligand promoted α1β1 and α2β1 integrin-mediated cell adhesion to medium- and low-affinity integrin ligands without regulating the cell surface expression levels of α1β1 or α2β1. Our data thus demonstrate an adhesion-promoting role of the DDRs, whereby overexpression and/or activation of the DDRs leads to enhanced integrin-mediated cell adhesion as a result of higher integrin activation state.
    Keywords Medicine ; R ; Science ; Q
    Subject code 571
    Language English
    Publishing date 2012-01-01T00:00:00Z
    Publisher Public Library of Science (PLoS)
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  6. Article ; Online: Role of Platelet Glycoprotein VI and Tyrosine Kinase Syk in Thrombus Formation on Collagen-Like Surfaces

    Natalie J. Jooss / Ilaria De Simone / Isabella Provenzale / Delia I. Fernández / Sanne L.N. Brouns / Richard W. Farndale / Yvonne M.C. Henskens / Marijke J.E. Kuijpers / Hugo ten Cate / Paola E.J. van der Meijden / Rachel Cavill / Johan W.M. Heemskerk

    International Journal of Molecular Sciences, Vol 20, Iss 11, p

    2019  Volume 2788

    Abstract: Platelet interaction with collagens, via von Willebrand factor, is a potent trigger of shear-dependent thrombus formation mediated by subsequent engagement of the signaling collagen receptor glycoprotein (GP)VI, enforced by integrin α 2 β 1 . Protein ... ...

    Abstract Platelet interaction with collagens, via von Willebrand factor, is a potent trigger of shear-dependent thrombus formation mediated by subsequent engagement of the signaling collagen receptor glycoprotein (GP)VI, enforced by integrin α 2 β 1 . Protein tyrosine kinase Syk is central in the GPVI-induced signaling pathway, leading to elevated cytosolic Ca 2+ . We aimed to determine the Syk-mediated thrombogenic activity of several collagen peptides and (fibrillar) type I and III collagens. High-shear perfusion of blood over microspots of these substances resulted in thrombus formation, which was assessed by eight parameters and was indicative of platelet adhesion, activation, aggregation, and contraction, which were affected by the Syk inhibitor PRT-060318. In platelet suspensions, only collagen peptides containing the consensus GPVI-activating sequence (GPO) n and Horm-type collagen evoked Syk-dependent Ca 2+ rises. In whole blood under flow, Syk inhibition suppressed platelet activation and aggregation parameters for the collagen peptides with or without a (GPO) n sequence and for all of the collagens. Prediction models based on a regression analysis indicated a mixed role of GPVI in thrombus formation on fibrillar collagens, which was abolished by Syk inhibition. Together, these findings indicate that GPVI-dependent signaling through Syk supports platelet activation in thrombus formation on collagen-like structures regardless of the presence of a (GPO) n sequence.
    Keywords calcium ; collagen ; glycoprotein VI ; platelet activation ; protein tyrosine kinase ; thrombus ; Biology (General) ; QH301-705.5 ; Chemistry ; QD1-999
    Language English
    Publishing date 2019-06-01T00:00:00Z
    Publisher MDPI AG
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  7. Article ; Online: Mild hyperlipidemia in mice aggravates platelet responsiveness in thrombus formation and exploration of platelet proteome and lipidome

    Johanna P. van Geffen / Frauke Swieringa / Kim van Kuijk / Bibian M. E. Tullemans / Fiorella A. Solari / Bing Peng / Kenneth J. Clemetson / Richard W. Farndale / Ludwig J. Dubois / Albert Sickmann / René P. Zahedi / Robert Ahrends / Erik A. L. Biessen / Judith C. Sluimer / Johan W. M. Heemskerk / Marijke J. E. Kuijpers

    Scientific Reports, Vol 10, Iss 1, Pp 1-

    2020  Volume 17

    Abstract: Abstract Hyperlipidemia is a well-established risk factor for cardiovascular diseases. Millions of people worldwide display mildly elevated levels of plasma lipids and cholesterol linked to diet and life-style. While the prothrombotic risk of severe ... ...

    Abstract Abstract Hyperlipidemia is a well-established risk factor for cardiovascular diseases. Millions of people worldwide display mildly elevated levels of plasma lipids and cholesterol linked to diet and life-style. While the prothrombotic risk of severe hyperlipidemia has been established, the effects of moderate hyperlipidemia are less clear. Here, we studied platelet activation and arterial thrombus formation in Apoe −/− and Ldlr −/− mice fed a normal chow diet, resulting in mildly increased plasma cholesterol. In blood from both knockout mice, collagen-dependent thrombus and fibrin formation under flow were enhanced. These effects did not increase in severe hyperlipidemic blood from aged mice and upon feeding a high-fat diet (Apoe −/− mice). Bone marrow from wild-type or Ldlr −/− mice was transplanted into irradiated Ldlr −/− recipients. Markedly, thrombus formation was enhanced in blood from chimeric mice, suggesting that the hyperlipidemic environment altered the wild-type platelets, rather than the genetic modification. The platelet proteome revealed high similarity between the three genotypes, without clear indication for a common protein-based gain-of-function. The platelet lipidome revealed an altered lipid profile in mildly hyperlipidemic mice. In conclusion, in Apoe −/− and Ldlr −/− mice, modest elevation in plasma and platelet cholesterol increased platelet responsiveness in thrombus formation and ensuing fibrin formation, resulting in a prothrombotic phenotype.
    Keywords Medicine ; R ; Science ; Q
    Subject code 630
    Language English
    Publishing date 2020-12-01T00:00:00Z
    Publisher Nature Portfolio
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  8. Article ; Online: Measurement of the Interaction Between Recombinant I-domain from Integrin alpha 2 beta 1 and a Triple Helical Collagen Peptide with the GFOGER Binding Motif Using Molecular Force Spectroscopy

    Mark E. Welland / Richard W. Farndale / Dominique Bihan / Debdulal Roy / Simon J. Attwood / Anna M. C. Simpson / Samir W. Hamaia

    International Journal of Molecular Sciences, Vol 14, Iss 2, Pp 2832-

    2013  Volume 2845

    Abstract: The role of the collagen-platelet interaction is of crucial importance to the haemostatic response during both injury and pathogenesis of the blood vessel wall. Of particular interest is the high affinity interaction of the platelet transmembrane ... ...

    Abstract The role of the collagen-platelet interaction is of crucial importance to the haemostatic response during both injury and pathogenesis of the blood vessel wall. Of particular interest is the high affinity interaction of the platelet transmembrane receptor, alpha 2 beta 1, responsible for firm attachment of platelets to collagen at and around injury sites. We employ single molecule force spectroscopy (SMFS) using the atomic force microscope (AFM) to study the interaction of the I-domain from integrin alpha 2 beta 1 with a synthetic collagen related triple-helical peptide containing the high-affinity integrin-binding GFOGER motif, and a control peptide lacking this sequence, referred to as GPP. By utilising synthetic peptides in this manner we are able to study at the molecular level subtleties that would otherwise be lost when considering cell-to-collagen matrix interactions using ensemble techniques. We demonstrate for the first time the complexity of this interaction as illustrated by the complex multi-peaked force spectra and confirm specificity using control blocking experiments. In addition we observe specific interaction of the GPP peptide sequence with the I-domain. We propose a model to explain these observations.
    Keywords integrin ; alpha 2 beta 1 ; collagen ; atomic force microscopy ; single moleculeforce spectroscopy ; Biology (General) ; QH301-705.5 ; Chemistry ; QD1-999
    Subject code 540
    Language English
    Publishing date 2013-01-01T00:00:00Z
    Publisher MDPI AG
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  9. Article: NMR Spectroscopy of Native and in Vitro Tissues Implicates PolyADP Ribose in Biomineralization

    Chow, W. Ying / Catherine M. Shanahan / David A. Slatter / David G. Reid / Dominique Bihan / Jeremy N. Skepper / Karin H. Muller / Maggie Green / Melinda J. Duer / Rakesh Rajan / Richard W. Farndale / Roger A. Brooks / Wai Ching Wong

    Science. 2014 May 16, v. 344, no. 6185

    2014  

    Abstract: Fundamentals of Bone Formation In vitro models can help guide research for tissue engineering or drug delivery, but the extent to which results from in vitro experiments may mimic in vivo ones will depend on the robustness of the model. For complex ... ...

    Abstract Fundamentals of Bone Formation In vitro models can help guide research for tissue engineering or drug delivery, but the extent to which results from in vitro experiments may mimic in vivo ones will depend on the robustness of the model. For complex tissues like the extracellular matrix or bone, this means matching the chemical organization of the tissue at both the atomic scale and the structural level. Chow et al. (p. 742) used nuclear magnetic resonance (NMR) spectroscopy to analyze a sample on both these length scales. First an isotope-enriched mouse was produced to enhance the NMR signal. Samples from these mice were then used to study the extracellular matrix of developing bone and the calcification front during fetal bone growth.
    Keywords biomineralization ; bone formation ; calcification ; drugs ; extracellular matrix ; in vitro studies ; mice ; models ; nuclear magnetic resonance spectroscopy ; tissue engineering
    Language English
    Dates of publication 2014-0516
    Size p. 742-746.
    Publishing place American Association for the Advancement of Science
    Document type Article
    ZDB-ID 128410-1
    ISSN 1095-9203 ; 0036-8075
    ISSN (online) 1095-9203
    ISSN 0036-8075
    DOI 10.1126/science.1248167
    Database NAL-Catalogue (AGRICOLA)

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  10. Article ; Online: A Simple Bioconjugate Attachment Protocol for Use in Single Molecule Force Spectroscopy Experiments Based on Mixed Self-Assembled Monolayers

    Myriam Ouberai / Richard W. Farndale / Debdulal Roy / Samir W. Hamaia / Rachael Stone / Anna M. C. Simpson / Simon J. Attwood / Mark E.Welland

    International Journal of Molecular Sciences, Vol 13, Iss 10, Pp 13521-

    2012  Volume 13541

    Abstract: Single molecule force spectroscopy is a technique that can be used to probe the interaction force between individual biomolecular species. We focus our attention on the tip and sample coupling chemistry, which is crucial to these experiments. We utilised ...

    Abstract Single molecule force spectroscopy is a technique that can be used to probe the interaction force between individual biomolecular species. We focus our attention on the tip and sample coupling chemistry, which is crucial to these experiments. We utilised a novel approach of mixed self-assembled monolayers of alkanethiols in conjunction with a heterobifunctional crosslinker. The effectiveness of the protocol is demonstrated by probing the biotin-avidin interaction. We measured unbinding forces comparable to previously reported values measured at similar loading rates. Specificity tests also demonstrated a significant decrease in recognition after blocking with free avidin.
    Keywords atomic force microscopy ; single molecule force spectroscopy ; biotin-avidin interaction ; mixed self-assembled monolayers ; Biology (General) ; QH301-705.5 ; Chemistry ; QD1-999
    Language English
    Publishing date 2012-10-01T00:00:00Z
    Publisher MDPI AG
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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