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Platt CI, Stewart-McGuinness C, Eckersley A, Wilkins L, Sherratt MJ. Acute exposure to ultraviolet radiation targets proteins involved in collagen fibrillogenesis. Front Physiol 2024; 15:1352161. [PMID: 38559576 PMCID: PMC10978599 DOI: 10.3389/fphys.2024.1352161] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2023] [Accepted: 02/19/2024] [Indexed: 04/04/2024] Open
Abstract
Introduction: Exposure to chronic, low-dose UV irradiation (UVR) can lead to premature ageing of the skin. Understanding which proteins are affected by acute UVR and photo-dynamically produced reactive oxygen species (ROS) could help to inform strategies to delay photoageing. Conventional biochemical analyses can be used to characterize UVR/ROS-induced damage on a protein-by-protein basis and we have previously shown using SDS-PAGE that collagen I and plasma fibronectin are respectively resistant and susceptible to physiological doses of UVR. The aim of this study was to screen a complex proteome for UVR-affected proteins. Methods: This study employed a sensitive mass spectrometry technique (peptide location fingerprinting: PLF) which can identify structure associated differences following trypsin digestion to characterize the impact of UVR exposure on purified collagen I and tissue fibronectin and to identify UVR-susceptible proteins in an ECM-enriched proteome. Results: Using LC/MS-MS and PLF we show that purified mature type-I collagen is resistant to UVR, whereas purified tissue fibronectin is susceptible. UV irradiation of a human dermal fibroblast-deposited ECM-enriched proteome in vitro, followed by LC/MS-MS and PLF analysis revealed two protein cluster groups of UV susceptible proteins involved in i) matrix collagen fibril assembly and ii) protein translation and motor activity. Furthermore, PLF highlighted UV susceptible domains within targeted matrix proteins, suggesting that UV damage of matrix proteins is localized. Discussion: Here we show that PLF can be used to identify protein targets of UVR and that collagen accessory proteins may be key targets in UVR exposed tissues.
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Affiliation(s)
- Christopher I. Platt
- Division of Cell Matrix Biology & Regenerative Medicine, School of Biological Science, Faculty of Biology, Medicine and Health, The University of Manchester, Manchester, United Kingdom
| | - Callum Stewart-McGuinness
- Division of Cell Matrix Biology & Regenerative Medicine, School of Biological Science, Faculty of Biology, Medicine and Health, The University of Manchester, Manchester, United Kingdom
| | - Alexander Eckersley
- Division of Musculoskeletal & Dermatological Sciences, School of Biological Sciences, Faculty of Biology, Medicine and Health, The University of Manchester, Manchester, United Kingdom
| | - Loren Wilkins
- School of Medical Sciences, The University of Manchester, Manchester, United Kingdom
| | - Michael J. Sherratt
- Division of Cell Matrix Biology & Regenerative Medicine, School of Biological Science, Faculty of Biology, Medicine and Health, The University of Manchester, Manchester, United Kingdom
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2
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Vadon-Le Goff S, Tessier A, Napoli M, Dieryckx C, Bauer J, Dussoyer M, Lagoutte P, Peyronnel C, Essayan L, Kleiser S, Tueni N, Bettler E, Mariano N, Errazuriz-Cerda E, Fruchart Gaillard C, Ruggiero F, Becker-Pauly C, Allain JM, Bruckner-Tuderman L, Nyström A, Moali C. Identification of PCPE-2 as the endogenous specific inhibitor of human BMP-1/tolloid-like proteinases. Nat Commun 2023; 14:8020. [PMID: 38049428 PMCID: PMC10696041 DOI: 10.1038/s41467-023-43401-0] [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: 08/24/2022] [Accepted: 11/08/2023] [Indexed: 12/06/2023] Open
Abstract
BMP-1/tolloid-like proteinases (BTPs) are major players in tissue morphogenesis, growth and repair. They act by promoting the deposition of structural extracellular matrix proteins and by controlling the activity of matricellular proteins and TGF-β superfamily growth factors. They have also been implicated in several pathological conditions such as fibrosis, cancer, metabolic disorders and bone diseases. Despite this broad range of pathophysiological functions, the putative existence of a specific endogenous inhibitor capable of controlling their activities could never be confirmed. Here, we show that procollagen C-proteinase enhancer-2 (PCPE-2), a protein previously reported to bind fibrillar collagens and to promote their BTP-dependent maturation, is primarily a potent and specific inhibitor of BTPs which can counteract their proteolytic activities through direct binding. PCPE-2 therefore differs from the cognate PCPE-1 protein and extends the possibilities to fine-tune BTP activities, both in physiological conditions and in therapeutic settings.
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Affiliation(s)
- Sandrine Vadon-Le Goff
- University of Lyon, CNRS UMR5305, Tissue Biology and Therapeutic Engineering Laboratory (LBTI), 69367, Lyon, France
| | - Agnès Tessier
- University of Lyon, CNRS UMR5305, Tissue Biology and Therapeutic Engineering Laboratory (LBTI), 69367, Lyon, France
- Department of Dermatology, Medical Faculty, Medical Center - University of Freiburg, 79104, Freiburg, Germany
- University of Freiburg, Faculty of Biology, 79104, Freiburg, Germany
| | - Manon Napoli
- University of Lyon, CNRS UMR5305, Tissue Biology and Therapeutic Engineering Laboratory (LBTI), 69367, Lyon, France
| | - Cindy Dieryckx
- University of Lyon, CNRS UMR5305, Tissue Biology and Therapeutic Engineering Laboratory (LBTI), 69367, Lyon, France
| | - Julien Bauer
- University of Lyon, CNRS UMR5305, Tissue Biology and Therapeutic Engineering Laboratory (LBTI), 69367, Lyon, France
| | - Mélissa Dussoyer
- University of Lyon, CNRS UMR5305, Tissue Biology and Therapeutic Engineering Laboratory (LBTI), 69367, Lyon, France
| | - Priscillia Lagoutte
- University of Lyon, CNRS UMR5305, Tissue Biology and Therapeutic Engineering Laboratory (LBTI), 69367, Lyon, France
| | - Célian Peyronnel
- University of Lyon, CNRS UMR5305, Tissue Biology and Therapeutic Engineering Laboratory (LBTI), 69367, Lyon, France
| | - Lucie Essayan
- University of Lyon, CNRS UMR5305, Tissue Biology and Therapeutic Engineering Laboratory (LBTI), 69367, Lyon, France
| | - Svenja Kleiser
- Department of Dermatology, Medical Faculty, Medical Center - University of Freiburg, 79104, Freiburg, Germany
- University of Freiburg, Faculty of Biology, 79104, Freiburg, Germany
| | - Nicole Tueni
- Laboratoire de Mécanique des Solides, CNRS, Ecole Polytechnique, Institut Polytechnique de Paris, 91120, Palaiseau, France
- INRIA, 91120, Palaiseau, France
- Institute of Applied Mechanics, Department of Mechanical Engineering, Friedrich-Alexander-Universität Erlangen-Nürnberg, 91058, Erlangen, Germany
| | - Emmanuel Bettler
- University of Lyon, CNRS UMR5305, Tissue Biology and Therapeutic Engineering Laboratory (LBTI), 69367, Lyon, France
| | - Natacha Mariano
- University of Lyon, CNRS UMR5305, Tissue Biology and Therapeutic Engineering Laboratory (LBTI), 69367, Lyon, France
| | - Elisabeth Errazuriz-Cerda
- University of Lyon, Centre d'Imagerie Quantitative Lyon-Est (CIQLE), SFR Santé-Lyon Est, 69373, Lyon, France
| | - Carole Fruchart Gaillard
- Université Paris-Saclay, CEA, INRAE, Médicaments et Technologies pour la Santé (MTS), SIMoS, 91191, Gif-sur-Yvette, France
| | - Florence Ruggiero
- ENS Lyon, CNRS UMR 5242, Institut de Génomique Fonctionnelle de Lyon (IGFL), 69007, Lyon, France
| | - Christoph Becker-Pauly
- University of Kiel, Biochemical Institute, Unit for Degradomics of the Protease Web, Kiel, Germany
| | - Jean-Marc Allain
- Laboratoire de Mécanique des Solides, CNRS, Ecole Polytechnique, Institut Polytechnique de Paris, 91120, Palaiseau, France
- INRIA, 91120, Palaiseau, France
| | - Leena Bruckner-Tuderman
- Department of Dermatology, Medical Faculty, Medical Center - University of Freiburg, 79104, Freiburg, Germany
| | - Alexander Nyström
- Department of Dermatology, Medical Faculty, Medical Center - University of Freiburg, 79104, Freiburg, Germany
- Freiburg Institute for Advanced Studies (FRIAS), University of Freiburg, Freiburg, Germany
| | - Catherine Moali
- University of Lyon, CNRS UMR5305, Tissue Biology and Therapeutic Engineering Laboratory (LBTI), 69367, Lyon, France.
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3
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Nissen NI, Johansen AZ, Chen IM, Jensen C, Madsen EA, Hansen CP, Thorlacius-Ussing J, Karsdal M, Johansen JS, Diab HMH, Jørgensen LN, Willumsen N. High serum levels of the C-propetide of type V collagen (PRO-C5) are prognostic for short overall survival in patients with pancreatic ductal adenocarcinoma. Front Mol Biosci 2023; 10:1158058. [PMID: 36968276 PMCID: PMC10036831 DOI: 10.3389/fmolb.2023.1158058] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2023] [Accepted: 02/23/2023] [Indexed: 03/12/2023] Open
Abstract
Introduction: Pancreatic ductal adenocarcinoma (PDAC) is characterized by a pronounced fibrotic tumor microenvironment, which impairs treatment response. Type I and V collagens are responsible for the densely packed fibrils in the tumor fibrosis environment. While the role of the major type I collagen in cancer is well described, less is known about the minor type V collagen. Quantifying collagen propeptides in serum has been shown to have prognostic and predictive value. In this study, we evaluated the clinical utility of measuring the propeptide of type V collagen (PRO-C5) in serum from a discovery cohort and a validation cohort of patients with PDAC as well as in non-pancreatic solid tumor types to explore the relevance of the PRO-C5 biomarker in cancer.Methods: Serum PRO-C5 was measured in three cohorts: a discovery cohort (19 healthy controls, 12 patients with chronic pancreatitis and 33 patients with PDAC (stage I-IV)), a validation cohort (800 patients with PDAC (stage I-IV)), and a non-pancreatic solid tumor type cohort of 33 healthy controls and 200 patients with 10 different non-pancreatic solid tumor types. The levels of serum PRO-C5 in patients with cancer were compared to levels in healthy controls. The association between PRO-C5 levels and overall survival (OS) was evaluated in patients with PDAC after adjusting for established prognostic factors.Results: PRO-C5 was significantly increased in serum from patients with PDAC compared to healthy controls (p < 0.001). High PRO-C5 levels were significantly associated with short OS in both the discovery- and the validation cohort, especially in early stages of PDAC (validation cohort stage II, HR = 2.0, 95%CI1.2-3.4). The association was independent of other prognostic parameters including stage, performance status and CA19-9. Furthermore, serum levels of PRO-C5 were significantly increased in serum from patients with other non-pancreatic solid tumor types compared to healthy controls.Conclusion: High levels of serum PRO-C5 is prognostic for short OS in patients with PDAC and may provide clinical value in many other tumor types beyond PDAC. This underlines the importance of type V collagen in tumor fibrosis. PRO-C5 could have the potential to be used in several aspects within drug discovery, patient stratification and drug efficacy.
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Affiliation(s)
- Neel I. Nissen
- Nordic Bioscience A/S, Herlev, Denmark
- *Correspondence: Neel I. Nissen,
| | - Astrid Z. Johansen
- Department of Oncology, Copenhagen University Hospital, Gentofte, Denmark
| | - Inna M. Chen
- Department of Oncology, Copenhagen University Hospital, Gentofte, Denmark
| | | | | | - Carsten P. Hansen
- Department of Surgery, Copenhagen University Hospital – Rigshospitalet, Copenhagen, Denmark
| | | | | | - Julia S. Johansen
- Department of Oncology, Copenhagen University Hospital, Gentofte, Denmark
- Institute of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
- Department of Medicine, Copenhagen University Hospital, Gentofte, Denmark
| | - Hadi M. H. Diab
- Digestive Disease Center, Bispebjerg and Frederiksberg Hospital, University of Copenhagen, Copenhagen, Denmark
| | - Lars N. Jørgensen
- Institute of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
- Digestive Disease Center, Bispebjerg and Frederiksberg Hospital, University of Copenhagen, Copenhagen, Denmark
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4
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Machol K, Polak U, Weisz-Hubshman M, Song IW, Chen S, Jiang MM, Chen-Evenson Y, Weis MAE, Keene DR, Eyre DR, Lee BH. Molecular alterations due to Col5a1 haploinsufficiency in a mouse model of classic Ehlers-Danlos syndrome. Hum Mol Genet 2022; 31:1325-1335. [PMID: 34740257 PMCID: PMC9029232 DOI: 10.1093/hmg/ddab323] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2021] [Revised: 10/07/2021] [Accepted: 10/29/2021] [Indexed: 01/27/2023] Open
Abstract
Type V collagen is a regulatory fibrillar collagen essential for type I collagen fibril nucleation and organization and its deficiency leads to structurally abnormal extracellular matrix (ECM). Haploinsufficiency of the Col5a1 gene encoding α(1) chain of type V collagen is the primary cause of classic Ehlers-Danlos syndrome (EDS). The mechanisms by which this initial insult leads to the spectrum of clinical presentation are not fully understood. Using transcriptome analysis of skin and Achilles tendons from Col5a1 haploinsufficient (Col5a1+/-) mice, we recognized molecular alterations associated with the tissue phenotypes. We identified dysregulation of ECM components including thrombospondin-1, lysyl oxidase, and lumican in the skin of Col5a1+/- mice when compared with control. We also identified upregulation of transforming growth factor β1 (Tgf-β) in serum and increased expression of pSmad2 in skin from Col5a1+/- mice, suggesting Tgf-β dysregulation is a contributor to abnormal wound healing and atrophic scarring seen in classic EDS. Together, these findings support altered matrix to cell signaling as a component of the pathogenesis of the tissue phenotype in classic EDS and point out potential downstream signaling pathways that may be targeted for the treatment of this disease.
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Affiliation(s)
- Keren Machol
- Department of Molecular and Human Genetics, Baylor college of Medicine, Houston, TX 77030, USA
| | - Urszula Polak
- Department of Molecular and Human Genetics, Baylor college of Medicine, Houston, TX 77030, USA
| | - Monika Weisz-Hubshman
- Department of Molecular and Human Genetics, Baylor college of Medicine, Houston, TX 77030, USA
| | - I-Wen Song
- Department of Molecular and Human Genetics, Baylor college of Medicine, Houston, TX 77030, USA
| | - Shan Chen
- Department of Molecular and Human Genetics, Baylor college of Medicine, Houston, TX 77030, USA
| | - Ming-Ming Jiang
- Department of Molecular and Human Genetics, Baylor college of Medicine, Houston, TX 77030, USA
| | - Yuqing Chen-Evenson
- Department of Molecular and Human Genetics, Baylor college of Medicine, Houston, TX 77030, USA
| | - Mary Ann E Weis
- Department of Orthopedics and Sports Medicine, University of Washington Seattle, WA 98195, USA
| | - Douglas R Keene
- Micro-Imaging Center, Shriners Hospital for Children, Portland, OR 97239, USA
| | - David R Eyre
- Department of Orthopedics and Sports Medicine, University of Washington Seattle, WA 98195, USA
| | - Brendan H Lee
- Department of Molecular and Human Genetics, Baylor college of Medicine, Houston, TX 77030, USA
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5
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Eckersley A, Ozols M, Chen P, Tam V, Hoyland JA, Trafford A, Chan D, Sherratt MJ. Peptide Location Fingerprinting Reveals Tissue Region-Specific Differences in Protein Structures in an Ageing Human Organ. Int J Mol Sci 2021; 22:10408. [PMID: 34638745 PMCID: PMC8509034 DOI: 10.3390/ijms221910408] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2021] [Revised: 09/10/2021] [Accepted: 09/14/2021] [Indexed: 12/18/2022] Open
Abstract
In ageing tissues, long-lived extracellular matrix (ECM) proteins are susceptible to the accumulation of structural damage due to diverse mechanisms including glycation, oxidation and protease cleavage. Peptide location fingerprinting (PLF) is a new mass spectrometry (MS) analysis technique capable of identifying proteins exhibiting structural differences in complex proteomes. PLF applied to published young and aged intervertebral disc (IVD) MS datasets (posterior, lateral and anterior regions of the annulus fibrosus) identified 268 proteins with age-associated structural differences. For several ECM assemblies (collagens I, II and V and aggrecan), these differences were markedly conserved between degeneration-prone (posterior and lateral) and -resistant (anterior) regions. Significant differences in peptide yields, observed within collagen I α2, collagen II α1 and collagen V α1, were located within their triple-helical regions and/or cleaved C-terminal propeptides, indicating potential accumulation of damage and impaired maintenance. Several proteins (collagen V α1, collagen II α1 and aggrecan) also exhibited tissue region (lateral)-specific differences in structure between aged and young samples, suggesting that some ageing mechanisms may act locally within tissues. This study not only reveals possible age-associated differences in ECM protein structures which are tissue-region specific, but also highlights the ability of PLF as a proteomic tool to aid in biomarker discovery.
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Affiliation(s)
- Alexander Eckersley
- Division of Cell Matrix Biology & Regenerative Medicine, Faculty of Biology, Medicine and Health, School of Biological Sciences, The University of Manchester, Manchester M13 9PT, UK; (M.O.); (J.A.H.)
| | - Matiss Ozols
- Division of Cell Matrix Biology & Regenerative Medicine, Faculty of Biology, Medicine and Health, School of Biological Sciences, The University of Manchester, Manchester M13 9PT, UK; (M.O.); (J.A.H.)
- Department of Human Genetics, Wellcome Sanger Institute, Genome Campus, Hinxton CB10 1SA, UK
| | - Peikai Chen
- School of Biomedical Sciences, The University of Hong Kong, Hong Kong, China; (P.C.); (V.T.); (D.C.)
- Department of Orthopaedics and Traumatology, The University of Hong Kong-Shenzhen Hospital (HKU-SZH), Shenzhen 518053, China
| | - Vivian Tam
- School of Biomedical Sciences, The University of Hong Kong, Hong Kong, China; (P.C.); (V.T.); (D.C.)
| | - Judith A. Hoyland
- Division of Cell Matrix Biology & Regenerative Medicine, Faculty of Biology, Medicine and Health, School of Biological Sciences, The University of Manchester, Manchester M13 9PT, UK; (M.O.); (J.A.H.)
- NIHR Manchester Biomedical Research Centre, Central Manchester Foundation Trust, Manchester Academic Health Science Centre, Manchester M13 9PL, UK
| | - Andrew Trafford
- Manchester Academic Health Science Centre, Division of Cardiovascular Sciences, Faculty of Biology, Medicine and Health, The University of Manchester, Manchester M13 9PL, UK;
| | - Danny Chan
- School of Biomedical Sciences, The University of Hong Kong, Hong Kong, China; (P.C.); (V.T.); (D.C.)
| | - Michael J. Sherratt
- Division of Cell Matrix Biology & Regenerative Medicine, Faculty of Biology, Medicine and Health, School of Biological Sciences, The University of Manchester, Manchester M13 9PT, UK; (M.O.); (J.A.H.)
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6
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Fukusato S, Nagao M, Fujihara K, Yoneda T, Arai K, Koch M, Kaneko K, Ishijima M, Izu Y. Collagen XII Deficiency Increases the Risk of Anterior Cruciate Ligament Injury in Mice. J Clin Med 2021; 10:4051. [PMID: 34575162 PMCID: PMC8467728 DOI: 10.3390/jcm10184051] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2021] [Revised: 08/26/2021] [Accepted: 08/30/2021] [Indexed: 12/26/2022] Open
Abstract
Anterior cruciate ligament (ACL) rupture is a common knee injury for athletes. Although surgical reconstruction is recommended for the treatment of ACL ruptures, 100% functional recovery is unlikely. Therefore, the discovery of risk factors for ACL ruptures may prevent injury. Several studies have reported an association between polymorphisms of the collagen XII gene COL12A1 and ACL rupture. Collagen XII is highly expressed in tendons and ligaments and regulates tissue structure and mechanical property. Therefore, we hypothesized that collagen XII deficiency may cause ACL injury. To elucidate the influence of collagen XII deficiency on ACL, we analyzed a mouse model deficient for Col12a1. Four- to 19-week-old male Col12a1-/- and wild-type control mice were used for gait analysis; histological and immunofluorescent analysis of collagen XII, and real-time RT-PCR evaluation of Col12a1 mRNA expression. The Col12a1-/- mice showed an abnormal gait with an approximately 2.7-fold increase in step angle, suggesting altered step alignment. Col12a1-/- mice displayed 20-60% ACL discontinuities, but 0% discontinuity in the posterior cruciate ligament. No discontinuities in knee ligaments were found in wild-type mice. Collagen XII mRNA expression in the ACL tended to decrease with aging. Our study demonstrates for the first time that collagen XII deficiency increases the risk of ACL injury.
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Affiliation(s)
- Shin Fukusato
- Department of Medicine for Orthopaedics and Motor Organs, Juntendo University Graduate School of Medicine, 2-1-1 Hongo, Bunkyo-Ku, Tokyo 113-8421, Japan; (S.F.); (K.K.); (M.I.)
| | - Masashi Nagao
- Department of Medicine for Orthopaedics and Motor Organs, Juntendo University Graduate School of Medicine, 2-1-1 Hongo, Bunkyo-Ku, Tokyo 113-8421, Japan; (S.F.); (K.K.); (M.I.)
- Medical Technology Innovation Center, Juntendo University, 2-1-1 Hongo, Bunkyo-Ku, Tokyo 113-8421, Japan
- Graduate School of Health and Sports Science, Juntendo University, 1-1 Hiragagakuenndai, Inzai 270-1695, Japan
| | - Kei Fujihara
- Department of Laboratory Animal Science, Faculty of Veterinary Science, Okayama University of Science, 1-3 Ikoinooka, Imabari 794-8555, Japan; (K.F.); (T.Y.)
| | - Taiju Yoneda
- Department of Laboratory Animal Science, Faculty of Veterinary Science, Okayama University of Science, 1-3 Ikoinooka, Imabari 794-8555, Japan; (K.F.); (T.Y.)
| | - Kiyotaka Arai
- Department of Veterinary Surgery, Faculty of Veterinary Science, Okayama University of Science, 1-1 Ridai-cho, Kita-ku, Okayama 700-0005, Japan;
| | - Manuel Koch
- Institute for Dental Research and Oral Musculoskeletal Biology and Center for Biochemistry, Medical Faculty, University of Cologne, D-50931 Cologne, Germany;
| | - Kazuo Kaneko
- Department of Medicine for Orthopaedics and Motor Organs, Juntendo University Graduate School of Medicine, 2-1-1 Hongo, Bunkyo-Ku, Tokyo 113-8421, Japan; (S.F.); (K.K.); (M.I.)
| | - Muneaki Ishijima
- Department of Medicine for Orthopaedics and Motor Organs, Juntendo University Graduate School of Medicine, 2-1-1 Hongo, Bunkyo-Ku, Tokyo 113-8421, Japan; (S.F.); (K.K.); (M.I.)
| | - Yayoi Izu
- Department of Laboratory Animal Science, Faculty of Veterinary Science, Okayama University of Science, 1-3 Ikoinooka, Imabari 794-8555, Japan; (K.F.); (T.Y.)
- Institute for Dental Research and Oral Musculoskeletal Biology and Center for Biochemistry, Medical Faculty, University of Cologne, D-50931 Cologne, Germany;
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7
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Maung MT, Carlson A, Olea-Flores M, Elkhadragy L, Schachtschneider KM, Navarro-Tito N, Padilla-Benavides T. The molecular and cellular basis of copper dysregulation and its relationship with human pathologies. FASEB J 2021; 35:e21810. [PMID: 34390520 DOI: 10.1096/fj.202100273rr] [Citation(s) in RCA: 57] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2021] [Revised: 06/23/2021] [Accepted: 07/07/2021] [Indexed: 12/16/2022]
Abstract
Copper (Cu) is an essential micronutrient required for the activity of redox-active enzymes involved in critical metabolic reactions, signaling pathways, and biological functions. Transporters and chaperones control Cu ion levels and bioavailability to ensure proper subcellular and systemic Cu distribution. Intensive research has focused on understanding how mammalian cells maintain Cu homeostasis, and how molecular signals coordinate Cu acquisition and storage within organs. In humans, mutations of genes that regulate Cu homeostasis or facilitate interactions with Cu ions lead to numerous pathologic conditions. Malfunctions of the Cu+ -transporting ATPases ATP7A and ATP7B cause Menkes disease and Wilson disease, respectively. Additionally, defects in the mitochondrial and cellular distributions and homeostasis of Cu lead to severe neurodegenerative conditions, mitochondrial myopathies, and metabolic diseases. Cu has a dual nature in carcinogenesis as a promotor of tumor growth and an inducer of redox stress in cancer cells. Cu also plays role in cancer treatment as a component of drugs and a regulator of drug sensitivity and uptake. In this review, we provide an overview of the current knowledge of Cu metabolism and transport and its relation to various human pathologies.
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Affiliation(s)
- May T Maung
- Department of Molecular Biology and Biochemistry, Wesleyan University, Middletown, CT, USA
| | - Alyssa Carlson
- Department of Molecular Biology and Biochemistry, Wesleyan University, Middletown, CT, USA
| | - Monserrat Olea-Flores
- Facultad de Ciencias Químico Biológicas, Universidad Autónoma de Guerrero, Guerrero, Mexico
| | - Lobna Elkhadragy
- Department of Radiology, University of Illinois at Chicago, Chicago, IL, USA
| | - Kyle M Schachtschneider
- Department of Radiology, University of Illinois at Chicago, Chicago, IL, USA.,Department of Biochemistry & Molecular Genetics, University of Illinois at Chicago, Chicago, IL, USA.,National Center for Supercomputing Applications, University of Illinois at Urbana-Champaign, Urbana, IL, USA
| | - Napoleon Navarro-Tito
- Facultad de Ciencias Químico Biológicas, Universidad Autónoma de Guerrero, Guerrero, Mexico
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8
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Lagoutte P, Bettler E, Vadon-Le Goff S, Moali C. Procollagen C-proteinase enhancer-1 (PCPE-1), a potential biomarker and therapeutic target for fibrosis. Matrix Biol Plus 2021; 11:100062. [PMID: 34435180 PMCID: PMC8377038 DOI: 10.1016/j.mbplus.2021.100062] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2021] [Revised: 03/12/2021] [Accepted: 03/15/2021] [Indexed: 02/07/2023] Open
Abstract
The correct balance between collagen synthesis and degradation is essential for almost every aspect of life, from development to healthy aging, reproduction and wound healing. When this balance is compromised by external or internal stress signals, it very often leads to disease as is the case in fibrotic conditions. Fibrosis occurs in the context of defective tissue repair and is characterized by the excessive, aberrant and debilitating deposition of fibril-forming collagens. Therefore, the numerous proteins involved in the biosynthesis of fibrillar collagens represent a potential and still underexploited source of therapeutic targets to prevent fibrosis. One such target is procollagen C-proteinase enhancer-1 (PCPE-1) which has the unique ability to accelerate procollagen maturation by BMP-1/tolloid-like proteinases (BTPs) and contributes to trigger collagen fibrillogenesis, without interfering with other BTP functions or the activities of other extracellular metalloproteinases. This role is achieved through a fine-tuned mechanism of action that is close to being elucidated and offers promising perspectives for drug design. Finally, the in vivo data accumulated in recent years also confirm that PCPE-1 overexpression is a general feature and early marker of fibrosis. In this review, we describe the results which presently support the driving role of PCPE-1 in fibrosis and discuss the questions that remain to be solved to validate its use as a biomarker or therapeutic target.
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Key Words
- ADAMTS, a disintegrin and metalloproteinase with thrombospondin motifs
- AS, aortic valve stenosis
- BMP, bone morphogenetic protein
- Biomarker
- CKD, chronic kidney disease
- CP, C-propeptide
- CUB, complement, Uegf, BMP-1
- CVD, cardiovascular disease
- Collagen
- DMD, Duchenne muscular dystrophy
- ECM, extracellular matrix
- EGF, epidermal growth factor
- ELISA, enzyme-linked immunosorbent assay
- Fibrillogenesis
- Fibrosis
- HDL, high-density lipoprotein
- HSC, hepatic stellate cell
- HTS, hypertrophic scar
- IPF, idiopathic pulmonary fibrosis
- LDL, low-density lipoprotein
- MI, myocardial infarction
- MMP, matrix metalloproteinase
- NASH, nonalcoholic steatohepatitis
- NTR, netrin
- OPMD, oculopharyngeal muscular dystrophy
- PABPN1, poly(A)-binding protein nuclear 1
- PCP, procollagen C-proteinase
- PCPE, procollagen C-proteinase enhancer
- PNP, procollagen N-proteinase
- Proteolysis
- SPC, subtilisin proprotein convertase
- TGF-β, transforming growth-factor β
- TIMP, tissue inhibitor of metalloproteinases
- TSPN, thrombospondin-like N-terminal
- Therapeutic target
- eGFR, estimated glomerular filtration rate
- mTLD, mammalian tolloid
- mTLL, mammalian tolloid-like
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Affiliation(s)
- Priscillia Lagoutte
- University of Lyon, CNRS, Tissue Biology and Therapeutic Engineering Laboratory, LBTI, UMR5305, F-69367 Lyon, France
| | - Emmanuel Bettler
- University of Lyon, CNRS, Tissue Biology and Therapeutic Engineering Laboratory, LBTI, UMR5305, F-69367 Lyon, France
| | - Sandrine Vadon-Le Goff
- University of Lyon, CNRS, Tissue Biology and Therapeutic Engineering Laboratory, LBTI, UMR5305, F-69367 Lyon, France
| | - Catherine Moali
- University of Lyon, CNRS, Tissue Biology and Therapeutic Engineering Laboratory, LBTI, UMR5305, F-69367 Lyon, France
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9
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Colman M, Syx D, De Wandele I, Dhooge T, Symoens S, Malfait F. Clinical and molecular characteristics of 168 probands and 65 relatives with a clinical presentation of classical Ehlers-Danlos syndrome. Hum Mutat 2021; 42:1294-1306. [PMID: 34265140 DOI: 10.1002/humu.24258] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2021] [Revised: 06/21/2021] [Accepted: 07/12/2021] [Indexed: 12/24/2022]
Abstract
Classical Ehlers-Danlos syndrome (cEDS) is a heritable connective tissue disorder mainly caused by pathogenic variants in COL5A1 or COL5A2, encoding type V collagen. Its diagnosis, based on clinical criteria and molecular confirmation, can be challenging. We report the molecular and clinical characteristics of 168 probands (72 clinically evaluated at our center) and 65 relatives with a clinical presentation of cEDS. Type V collagen defects were found in 145 probands, 121 (83.5%) were located in COL5A1 and 24 (16.5%) in COL5A2. Although 85.6% of molecularly confirmed patients presented the two major clinical criteria (generalized joint hypermobility, hyperextensible skin with atrophic scarring), significant inter- and intrafamilial phenotypic variability was noted. COL5A2 variants often caused a more severe phenotype. Vascular complications were rare in individuals with type V collagen defects (1.4%). Among the 72 probands clinically evaluated in our center, the mutation detection rate was 82.0%. The majority (68.1%) harbored COL5A1/COL5A2 defects. Yet, 13.9% harbored a defect in another gene (COL1A1, PLOD1, TNXB, AEBP1) highlighting important clinical overlap and the need for molecular confirmation of the diagnosis as this has implications regarding follow-up and genetic counseling. Eighteen percent of the 72 probands remained molecularly unexplained and a COL5A1 variant of unknown significance was identified in 6.9%.
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Affiliation(s)
- Marlies Colman
- Center for Medical Genetics, Ghent University Hospital, Ghent, Belgium.,Department of Biomolecular Medicine, Ghent University, Ghent, Belgium
| | - Delfien Syx
- Center for Medical Genetics, Ghent University Hospital, Ghent, Belgium.,Department of Biomolecular Medicine, Ghent University, Ghent, Belgium
| | - Inge De Wandele
- Center for Medical Genetics, Ghent University Hospital, Ghent, Belgium
| | - Tibbe Dhooge
- Center for Medical Genetics, Ghent University Hospital, Ghent, Belgium.,Department of Biomolecular Medicine, Ghent University, Ghent, Belgium
| | - Sofie Symoens
- Center for Medical Genetics, Ghent University Hospital, Ghent, Belgium.,Department of Biomolecular Medicine, Ghent University, Ghent, Belgium
| | - Fransiska Malfait
- Center for Medical Genetics, Ghent University Hospital, Ghent, Belgium.,Department of Biomolecular Medicine, Ghent University, Ghent, Belgium
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10
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Brindo da Cruz IC, Velosa APP, Carrasco S, Dos Santos Filho A, Tomaz de Miranda J, Pompeu E, Fernandes TL, Bueno DF, Fanelli C, Goldenstein-Schainberg C, Fabro AT, Fuller R, Silva PL, Capelozzi VL, Teodoro WR. Post-Adipose-Derived Stem Cells (ADSC) Stimulated by Collagen Type V (Col V) Mitigate the Progression of Osteoarthritic Rabbit Articular Cartilage. Front Cell Dev Biol 2021; 9:606890. [PMID: 33829012 PMCID: PMC8019831 DOI: 10.3389/fcell.2021.606890] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2020] [Accepted: 02/22/2021] [Indexed: 12/25/2022] Open
Abstract
Collagen is essential for cartilage adhesion and formation. In the present study, histology, immunofluorescence, morphometry, and qRT-PCR suggested that adipose-derived stem cells (ADSCs) stimulated by type V collagen (Col V) induce a significant increase of type II collagen (Col II) in the degenerative area of surgical-induced osteoarthritic rabbit articular cartilage (OA). In vitro, the effects of Col V on the proliferation and differentiation of ADSC were investigated. The expression of the cartilage-related genes Col2a1 and Acan was significantly upregulated and Pou5fl was downregulated post-ADSC/Col V treatment. Post-ADSC/Col V treatment, in vivo analyses revealed that rabbits showed typical signs of osteoarthritic articular cartilage regeneration by hematoxylin and eosin (H&E) and Safranin O/Fast Green staining. Immunohistochemical staining demonstrated that the volume of Col II fibers and the expression of Col II protein were significantly increased, and apoptosis Fas ligand positive significantly decreased post-ADSC/Col V treatment. In conclusion, the expression of Col II was higher in rabbits with surgical-induced osteoarthritic articular cartilage; hence, ADSC/Col V may be a promising therapeutic target for OA treatment.
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Affiliation(s)
- Isabele Camargo Brindo da Cruz
- Rheumatology Division of the Hospital das Clinicas, Faculdade de Medicina, Universidade de São Paulo, FMUSP, São Paulo, Brazil
| | - Ana Paula Pereira Velosa
- Rheumatology Division of the Hospital das Clinicas, Faculdade de Medicina, Universidade de São Paulo, FMUSP, São Paulo, Brazil
| | - Solange Carrasco
- Rheumatology Division of the Hospital das Clinicas, Faculdade de Medicina, Universidade de São Paulo, FMUSP, São Paulo, Brazil
| | - Antonio Dos Santos Filho
- Rheumatology Division of the Hospital das Clinicas, Faculdade de Medicina, Universidade de São Paulo, FMUSP, São Paulo, Brazil
| | - Jurandir Tomaz de Miranda
- Rheumatology Division of the Hospital das Clinicas, Faculdade de Medicina, Universidade de São Paulo, FMUSP, São Paulo, Brazil
| | - Eduardo Pompeu
- Bioterism Center of the Hospital das Clinicas, Faculdade de Medicina, Universidade de São Paulo, FMUSP, São Paulo, Brazil
| | - Tiago Lazzaretti Fernandes
- Sport Medicine Division, Faculdade de Medicina, Institute of Orthopaedics and Traumatology of the Hospital das Clinicas, Universidade de São Paulo, FMUSP, São Paulo, Brazil.,Hospital Sírio-Libanês, São Paulo, Brazil
| | | | - Camila Fanelli
- Laboratory of Cellular, Genetic and Molecular Nephrology, Renal Division, University of São Paulo, São Paulo, Brazil
| | - Cláudia Goldenstein-Schainberg
- Rheumatology Division of the Hospital das Clinicas, Faculdade de Medicina, Universidade de São Paulo, FMUSP, São Paulo, Brazil
| | - Alexandre Todorovic Fabro
- Department of Pathology of the Hospital das Clinicas, Faculdade de Medicina, Universidade de São Paulo, FMUSP, São Paulo, Brazil.,Respiratory Medicine Laboratory, Department of Pathology and Legal Medicine, Ribeirão Preto Medical School, University of São Paulo (USP), São Paulo, Brazil
| | - Ricardo Fuller
- Rheumatology Division of the Hospital das Clinicas, Faculdade de Medicina, Universidade de São Paulo, FMUSP, São Paulo, Brazil
| | - Pedro Leme Silva
- Laboratory of Pulmonary Investigation, Centro de Ciências da Saúde, Carlos Chagas Filho Biophysics Institute, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil.,National Institute of Science and Technology for Regenerative Medicine, Rio de Janeiro, Brazil
| | - Vera Luiza Capelozzi
- Department of Pathology of the Hospital das Clinicas, Faculdade de Medicina, Universidade de São Paulo, FMUSP, São Paulo, Brazil
| | - Walcy Rosolia Teodoro
- Rheumatology Division of the Hospital das Clinicas, Faculdade de Medicina, Universidade de São Paulo, FMUSP, São Paulo, Brazil
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11
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TGFβ-1 Induced Cross-Linking of the Extracellular Matrix of Primary Human Dermal Fibroblasts. Int J Mol Sci 2021; 22:ijms22030984. [PMID: 33498156 PMCID: PMC7863744 DOI: 10.3390/ijms22030984] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2020] [Revised: 01/08/2021] [Accepted: 01/11/2021] [Indexed: 02/06/2023] Open
Abstract
Excessive cross-linking is a major factor in the resistance to the remodelling of the extracellular matrix (ECM) during fibrotic progression. The role of TGFβ signalling in impairing ECM remodelling has been demonstrated in various fibrotic models. We hypothesised that increased ECM cross-linking by TGFβ contributes to skin fibrosis in Systemic Sclerosis (SSc). Proteomics was used to identify cross-linking enzymes in the ECM of primary human dermal fibroblasts, and to compare their levels following treatment with TGFβ-1. A significant upregulation and enrichment of lysyl-oxidase-like 1, 2 and 4 and transglutaminase 2 were found. Western blotting confirmed the upregulation of lysyl hydroxylase 2 in the ECM. Increased transglutaminase activity in TGFβ-1 treated ECM was revealed from a cell-based assay. We employed a mass spectrometry-based method to identify alterations in the ECM cross-linking pattern caused by TGFβ-1. Cross-linking sites were identified in collagens I and V, fibrinogen and fibronectin. One cross-linking site in fibrinogen alpha was found only in TGFβ-treated samples. In conclusion, we have mapped novel cross-links between ECM proteins and demonstrated that activation of TGFβ signalling in cultured dermal fibroblasts upregulates multiple cross-linking enzymes in the ECM.
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12
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13
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Scott LE, Weinberg SH, Lemmon CA. Mechanochemical Signaling of the Extracellular Matrix in Epithelial-Mesenchymal Transition. Front Cell Dev Biol 2019; 7:135. [PMID: 31380370 PMCID: PMC6658819 DOI: 10.3389/fcell.2019.00135] [Citation(s) in RCA: 75] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2019] [Accepted: 07/04/2019] [Indexed: 12/20/2022] Open
Abstract
Epithelial-Mesenchymal Transition (EMT) is a critical process in embryonic development in which epithelial cells undergo a transdifferentiation into mesenchymal cells. This process is essential for tissue patterning and organization, and it has also been implicated in a wide array of pathologies. While the intracellular signaling pathways that regulate EMT are well-understood, there is increasing evidence that the mechanical properties and composition of the extracellular matrix (ECM) also play a key role in regulating EMT. In turn, EMT drives changes in the mechanics and composition of the ECM, creating a feedback loop that is tightly regulated in healthy tissues, but is often dysregulated in disease. Here we present a review that summarizes our understanding of how ECM mechanics and composition regulate EMT, and how in turn EMT alters ECM mechanics and composition.
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Affiliation(s)
- Lewis E Scott
- Department of Biomedical Engineering, Virginia Commonwealth University, Richmond, VA, United States
| | - Seth H Weinberg
- Department of Biomedical Engineering, Virginia Commonwealth University, Richmond, VA, United States
| | - Christopher A Lemmon
- Department of Biomedical Engineering, Virginia Commonwealth University, Richmond, VA, United States
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14
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Beyens A, Van Meensel K, Pottie L, De Rycke R, De Bruyne M, Baeke F, Hoebeke P, Plasschaert F, Loeys B, De Schepper S, Symoens S, Callewaert B. Defining the Clinical, Molecular and Ultrastructural Characteristics in Occipital Horn Syndrome: Two New Cases and Review of the Literature. Genes (Basel) 2019; 10:genes10070528. [PMID: 31336972 PMCID: PMC6678539 DOI: 10.3390/genes10070528] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2019] [Revised: 07/10/2019] [Accepted: 07/11/2019] [Indexed: 12/15/2022] Open
Abstract
Occipital horn syndrome (OHS) is a rare connective tissue disorder caused by pathogenic variants in ATP7A, encoding a copper transporter. The main clinical features, including cutis laxa, bony exostoses, and bladder diverticula are attributed to a decreased activity of lysyl oxidase (LOX), a cupro-enzyme involved in collagen crosslinking. The absence of large case series and natural history studies precludes efficient diagnosis and management of OHS patients. This study describes the clinical and molecular characteristics of two new patients and 32 patients previously reported in the literature. We report on the need for long-term specialized care and follow-up, in which MR angiography, echocardiography and spirometry should be incorporated into standard follow-up guidelines for OHS patients, next to neurodevelopmental, orthopedic and urological follow-up. Furthermore, we report on ultrastructural abnormalities including increased collagen diameter, mild elastic fiber abnormalities and multiple autophagolysosomes reflecting the role of lysyl oxidase and defective ATP7A trafficking as pathomechanisms of OHS.
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Affiliation(s)
- Aude Beyens
- Center for Medical Genetics Ghent, Ghent University Hospital, 9000 Ghent, Belgium
- Department of Dermatology, Ghent University Hospital, 9000 Ghent, Belgium
| | - Kyaran Van Meensel
- Center for Medical Genetics Ghent, Ghent University Hospital, 9000 Ghent, Belgium
| | - Lore Pottie
- Center for Medical Genetics Ghent, Ghent University Hospital, 9000 Ghent, Belgium
| | - Riet De Rycke
- Department for Biomedical Molecular Biology, Ghent University, 9000 Ghent, Belgium
- VIB Center for Inflammation Research, 9000 Ghent, Belgium
- Ghent University Expertise Centre for Transmission Electron Microscopy and VIB BioImaging Core, 9000 Ghent, Belgium
| | - Michiel De Bruyne
- Department for Biomedical Molecular Biology, Ghent University, 9000 Ghent, Belgium
- VIB Center for Inflammation Research, 9000 Ghent, Belgium
- Ghent University Expertise Centre for Transmission Electron Microscopy and VIB BioImaging Core, 9000 Ghent, Belgium
| | - Femke Baeke
- Department for Biomedical Molecular Biology, Ghent University, 9000 Ghent, Belgium
- VIB Center for Inflammation Research, 9000 Ghent, Belgium
- Ghent University Expertise Centre for Transmission Electron Microscopy and VIB BioImaging Core, 9000 Ghent, Belgium
| | - Piet Hoebeke
- Department of Urology, Ghent University Hospital, 9000 Ghent, Belgium
| | - Frank Plasschaert
- Department of Orthopedic Surgery, Ghent University Hospital, 9000 Ghent, Belgium
| | - Bart Loeys
- Center for Medical Genetics, University of Antwerp/Antwerp University Hospital, Antwerp, Belgium
| | - Sofie De Schepper
- Department of Dermatology, Ghent University Hospital, 9000 Ghent, Belgium
| | - Sofie Symoens
- Center for Medical Genetics Ghent, Ghent University Hospital, 9000 Ghent, Belgium
| | - Bert Callewaert
- Center for Medical Genetics Ghent, Ghent University Hospital, 9000 Ghent, Belgium.
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15
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Delbaere S, Dhooge T, Syx D, Petit F, Goemans N, Destrée A, Vanakker O, De Rycke R, Symoens S, Malfait F. Novel defects in collagen XII and VI expand the mixed myopathy/Ehlers-Danlos syndrome spectrum and lead to variant-specific alterations in the extracellular matrix. Genet Med 2019; 22:112-123. [PMID: 31273343 DOI: 10.1038/s41436-019-0599-6] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2019] [Accepted: 06/19/2019] [Indexed: 12/26/2022] Open
Abstract
PURPOSE To date, heterozygous or homozygous COL12A1 variants have been reported in 13 patients presenting with a clinical phenotype overlapping with collagen VI-related myopathies and Ehlers-Danlos syndrome (EDS). The small number of reported patients limits thorough investigation of this newly identified syndrome, currently coined as myopathic EDS. METHODS DNA from 78 genetically unresolved patients fulfilling the clinical criteria for myopathic EDS was sequenced using a next-generation panel of COL12A1, COL6A1, COL6A2, and COL6A3. RESULTS Among this cohort, we identified four pathogenic heterozygous in-frame exon skipping (∆) defects in COL12A1, clustering to the thrombospondin N-terminal region and the adjacent collagenous domain (Δ52, Δ53, Δ54, and Δ56 respectively), one heterozygous COL12A1 arginine-to-cysteine substitution of unclear significance (p.(Arg1863Cys)), and compound heterozygous pathogenic COL6A1 variants (c.[98-6G>A];[301C>T]) in one proband. Variant-specific intracellular accumulation of collagen XII chains, extracellular overmodification of the long isoform and near-absence of the short isoform of collagen XII, and extracellular decrease of decorin and tenascin-X were observed for the COL12A1 variants. In contrast, the COL6A1 variants abolished collagen VI and V deposition and increased tenascin-X levels. CONCLUSION Our data further support the significant clinical overlap between myopathic EDS and collagen VI-related myopathies, and emphasize the variant-specific consequences of collagen XII defects.
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Affiliation(s)
- Sarah Delbaere
- Center for Medical Genetics, Department of Biomolecular Medicine, Ghent University and Ghent University Hospital, Ghent, Belgium
| | - Tibbe Dhooge
- Center for Medical Genetics, Department of Biomolecular Medicine, Ghent University and Ghent University Hospital, Ghent, Belgium
| | - Delfien Syx
- Center for Medical Genetics, Department of Biomolecular Medicine, Ghent University and Ghent University Hospital, Ghent, Belgium
| | - Florence Petit
- Department of Clinical Genetics, CHU Lille, Université Lille, Lille, France
| | - Nathalie Goemans
- Department of Child Neurology, University Hospital Leuven, Leuven, Belgium.,Department of Development and Regeneration, University of Leuven, Leuven, Belgium
| | - Anne Destrée
- Center for Human Genetics, Institute of Pathology and Genetics, Gosselies, Belgium
| | - Olivier Vanakker
- Center for Medical Genetics, Department of Biomolecular Medicine, Ghent University and Ghent University Hospital, Ghent, Belgium
| | - Riet De Rycke
- Department of Biomedical Molecular Biology and Expertise Centre for Transmission Electron Microscopy, Ghent University, Ghent, Belgium.,Center for Inflammation Research and BioImaging Core, VIB, Ghent, Belgium
| | - Sofie Symoens
- Center for Medical Genetics, Department of Biomolecular Medicine, Ghent University and Ghent University Hospital, Ghent, Belgium
| | - Fransiska Malfait
- Center for Medical Genetics, Department of Biomolecular Medicine, Ghent University and Ghent University Hospital, Ghent, Belgium.
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16
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New variants in COL5A1 gene among Polish patients with Ehlers-Danlos syndrome: analysis of nine cases. Postepy Dermatol Alergol 2019; 36:29-33. [PMID: 30858776 PMCID: PMC6409875 DOI: 10.5114/ada.2018.79440] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2018] [Accepted: 10/03/2018] [Indexed: 02/04/2023] Open
Abstract
Introduction The Ehlers-Danlos syndrome (EDS) is a non-inflammatory, heritable connective tissue disorder divided into 13 types according to the 2017 International Classification of the Ehlers-Danlos syndromes. One of the subtypes of EDS, classical (cEDS), is characterized by joint hypermobility, skin hyperextensibility and atrophic scars, which are major criteria of cEDS. Aim In this study, the first in Central Eastern Europe, 44 patients were investigated. All of them were tested for COL5A1 mutations with direct DNA sequencing. Material and methods The study group included 44 patients of Polish origin, all of whom fulfilled criteria for the classical type of Ehlers-Danlos syndrome. Direct sequencing of the COL5A1, COL5A2 and COL1A1 c.934C>T genes was performed for all of them. Evaluation of potential pathogenicity of detected missense mutation was conducted using SIFT (Sorting Intolerant from Tolerant), PolyPhen-2, AlignGVGD (Align Grantham Variance/Grantham Difference). The effect of the splice site mutations was predicted by Human Splicing Finder and NetGene2 tools. Results Among all tested patients, nine mutations of COL5A1 gene were detected (8 missense mutations and 1 splice site). The alterations identified by us are new, hitherto not described in other reports. Evaluation of the mutations by in silico tools indicate their pathogenicity. Conclusions Our study is the first COL5A1 gene molecular investigation conducted among cEDS patients from Central Eastern Europe. Besides new COL5A1 variant findings, we gained molecular confirmation of clinical diagnosis of cEDS. In some cases, specific and adequate evaluation and classification of EDS patients based only on clinical features, may be difficult.
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17
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Whole exome sequencing in an Italian family with isolated maxillary canine agenesis and canine eruption anomalies. Arch Oral Biol 2018; 91:96-102. [PMID: 29705498 DOI: 10.1016/j.archoralbio.2018.04.011] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2017] [Revised: 04/10/2018] [Accepted: 04/17/2018] [Indexed: 01/05/2023]
Abstract
OBJECTIVE The aim of this study was the clinical and molecular characterization of a family segregating a trait consisting of a phenotype specifically involving the maxillary canines, including agenesis, impaction and ectopic eruption, characterized by incomplete penetrance and variable expressivity. DESIGN Clinical standardized assessment of 14 family members and a whole-exome sequencing (WES) of three affected subjects were performed. WES data analyses (sequence alignment, variant calling, annotation and prioritization) were carried out using an in-house implemented pipeline. Variant filtering retained coding and splice-site high quality private and rare variants. Variant prioritization was performed taking into account both the disruptive impact and the biological relevance of individual variants and genes. Sanger sequencing was performed to validate the variants of interest and to carry out segregation analysis. RESULTS Prioritization of variants "by function" allowed the identification of multiple variants contributing to the trait, including two concomitant heterozygous variants in EDARADD (c.308C>T, p.Ser103Phe) and COL5A1 (c.1588G>A, p.Gly530Ser), specifically associated with a more severe phenotype (i.e. canine agenesis). Differently, heterozygous variants in genes encoding proteins with a role in the WNT pathway were shared by subjects showing a phenotype of impacted/ectopic erupted canines. CONCLUSIONS This study characterized the genetic contribution underlying a complex trait consisting of isolated canine anomalies in a medium-sized family, highlighting the role of WNT and EDA cell signaling pathways in tooth development.
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18
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Vigier S, Gagnon H, Bourgade K, Klarskov K, Fülöp T, Vermette P. Composition and organization of the pancreatic extracellular matrix by combined methods of immunohistochemistry, proteomics and scanning electron microscopy. Curr Res Transl Med 2016; 65:31-39. [PMID: 28340694 DOI: 10.1016/j.retram.2016.10.001] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2016] [Revised: 09/30/2016] [Accepted: 10/07/2016] [Indexed: 12/29/2022]
Abstract
The epidemic expansion of diabetes is a major concern of public health. A promising treatment is the transplantation of islets of Langerhans isolated from the whole pancreas but the yields of islets isolation and the rates of successful engraftments still have to be improved to make this therapy effective. The extracellular matrix (ECM) of the pancreatic tissue is partially lost during the isolation process and a comprehensive knowledge of the pancreatic ECM composition and organization could identify targets to improve islets isolation and transplantation or highlight new therapeutics for pancreatic diseases. The organization, composition and three-dimensional architecture of the pancreatic ECM were analysed in mouse and pig by three different techniques. Laminin α-4 and β-2 chains are localized by immunohistochemistry in the exocrine tissue and inside islets of mouse pancreas but not around islets that are surrounded by an ECM made of collagen type IV and type V. Collagen type I, III, and VI were identified by proteomics as specific constituents of the pig pancreatic ECM along with the low-abundance isoforms α3(IV) α4(IV) α5(IV) and α1(V) α2(V) α3(V) of collagen type IV and type V respectively. The three-dimensional ECM architecture is analysed on decellularized mouse pancreas by scanning electron microscopy and is organized in honeycomb structures made of thin ECM fibers assembled in thicker bundles. The combination of immunohistochemistry, proteomics and scanning electron microscopy gives complementary perspective on the pancreatic ECM composition and organization. It represents a valuable toolbox for deeper investigations of ECMs and proposes clues in tissue engineering of the pancreas.
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Affiliation(s)
- S Vigier
- Department of Chemical and Biotechnological Engineering, Université de Sherbrooke, 2500, boulevard de l'Université, J1K 2R1 Sherbrooke, Québec, Canada.
| | - H Gagnon
- PhenoSwitch Bioscience, Faculty of Medicine and Health Sciences, Université de Sherbrooke, J1H 5N4 Sherbrooke, Québec, Canada
| | - K Bourgade
- Research Center on Aging, 1036, rue Belvédère Sud, J1H 4C4 Sherbrooke, Québec, Canada
| | - K Klarskov
- Department of Pharmacology and Physiology, Faculty of Medicine and Health Sciences, Université de Sherbrooke, J1H 5N4 Sherbrooke, Québec, Canada
| | - T Fülöp
- Research Center on Aging, 1036, rue Belvédère Sud, J1H 4C4 Sherbrooke, Québec, Canada
| | - P Vermette
- Department of Chemical and Biotechnological Engineering, Université de Sherbrooke, 2500, boulevard de l'Université, J1K 2R1 Sherbrooke, Québec, Canada
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Mak KM, Png CYM, Lee DJ. Type V Collagen in Health, Disease, and Fibrosis. Anat Rec (Hoboken) 2016; 299:613-29. [DOI: 10.1002/ar.23330] [Citation(s) in RCA: 89] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2015] [Revised: 12/01/2015] [Accepted: 12/23/2015] [Indexed: 12/30/2022]
Affiliation(s)
- Ki M. Mak
- Department of Medical Education/Center for Anatomy and Functional Morphology; Icahn School of Medicine at Mount Sinai; New York New York
| | - Chien Yi M. Png
- Department of Medical Education; Icahn School of Medicine at Mount Sinai; New York New York
| | - Danielle J. Lee
- Department of Medical Education; Icahn School of Medicine at Mount Sinai; New York New York
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20
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Paladin L, Tosatto SCE, Minervini G. Structural in silico dissection of the collagen V interactome to identify genotype-phenotype correlations in classic Ehlers-Danlos Syndrome (EDS). FEBS Lett 2015; 589:3871-8. [PMID: 26608033 DOI: 10.1016/j.febslet.2015.11.022] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2015] [Revised: 10/23/2015] [Accepted: 11/14/2015] [Indexed: 01/18/2023]
Abstract
Collagen V mutations are associated with Elhers-Danlos syndrome (EDS), a group of heritable collagenopathies. Collagen V structure is not available and the disease-causing mechanism is unclear. To address this issue, we manually curated missense mutations suspected to promote classic type EDS (cEDS) insurgence from the literature and performed a genotype-phenotype correlation study. Further, we generated a homology model of the collagen V triple helix to evaluate the pathogenic effects. The resulting structure was used to map known protein-protein interactions enriched with in silico predictions. An interaction network model for collagen V was created. We found that cEDS heterogeneous manifestations may be explained by the involvement in two different extracellular matrix pathways, related to cell adhesion and tissue repair or cell differentiation, growth and apoptosis.
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Affiliation(s)
- Lisanna Paladin
- Department of Biomedical Sciences and CRIBI Biotechnology Center, University of Padova, Viale G. Colombo 3, 35121 Padova, Italy.
| | - Silvio C E Tosatto
- Department of Biomedical Sciences and CRIBI Biotechnology Center, University of Padova, Viale G. Colombo 3, 35121 Padova, Italy; CNR Institute of Neuroscience, Padova, Italy.
| | - Giovanni Minervini
- Department of Biomedical Sciences and CRIBI Biotechnology Center, University of Padova, Viale G. Colombo 3, 35121 Padova, Italy.
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21
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Vanakker O, Callewaert B, Malfait F, Coucke P. The Genetics of Soft Connective Tissue Disorders. Annu Rev Genomics Hum Genet 2015; 16:229-55. [DOI: 10.1146/annurev-genom-090314-050039] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Olivier Vanakker
- Center for Medical Genetics, Ghent University Hospital, 9000 Ghent, Belgium;
| | - Bert Callewaert
- Center for Medical Genetics, Ghent University Hospital, 9000 Ghent, Belgium;
| | - Fransiska Malfait
- Center for Medical Genetics, Ghent University Hospital, 9000 Ghent, Belgium;
| | - Paul Coucke
- Center for Medical Genetics, Ghent University Hospital, 9000 Ghent, Belgium;
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Syx D, Guillemyn B, Symoens S, Sousa AB, Medeira A, Whiteford M, Hermanns-Lê T, Coucke PJ, De Paepe A, Malfait F. Defective Proteolytic Processing of Fibrillar Procollagens and Prodecorin Due to Biallelic BMP1 Mutations Results in a Severe, Progressive Form of Osteogenesis Imperfecta. J Bone Miner Res 2015; 30:1445-56. [PMID: 25656619 DOI: 10.1002/jbmr.2473] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/20/2014] [Revised: 01/25/2015] [Accepted: 01/31/2015] [Indexed: 11/10/2022]
Abstract
Whereas the vast majority of osteogenesis imperfecta (OI) is caused by autosomal dominant defects in the genes encoding type I procollagen, mutations in a myriad of genes affecting type I procollagen biosynthesis or bone formation and homeostasis have now been associated with rare autosomal recessive OI forms. Recently, homozygous or compound heterozygous mutations in BMP1, encoding the metalloproteases bone morphogenetic protein-1 (BMP1) and its longer isoform mammalian Tolloid (mTLD), were identified in 5 children with a severe autosomal recessive form of OI and in 4 individuals with mild to moderate bone fragility. BMP1/mTLD functions as the procollagen carboxy-(C)-proteinase for types I to III procollagen but was also suggested to participate in amino-(N)-propeptide cleavage of types V and XI procollagens and in proteolytic trimming of other extracellular matrix (ECM) substrates. We report the phenotypic characteristics and natural history of 4 adults with severe, progressive OI characterized by numerous fractures, short stature with rhizomelic shortening, and deformity of the limbs and variable kyphoscoliosis, in whom we identified novel biallelic missense and frameshift mutations in BMP1. We show that BMP1/mTLD-deficiency in humans not only results in delayed cleavage of the type I procollagen C-propeptide but also hampers the processing of the small leucine-rich proteoglycan prodecorin, a regulator of collagen fibrillogenesis. Immunofluorescent staining of types I and V collagen and transmission electron microscopy of the dermis show impaired assembly of heterotypic type I/V collagen fibrils in the ECM. Our study thus highlights the severe and progressive nature of BMP1-associated OI in adults and broadens insights into the functional consequences of BMP1/mTLD-deficiency on ECM organization.
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Affiliation(s)
- Delfien Syx
- Center for Medical Genetics, Ghent University Hospital, Ghent, Belgium
| | - Brecht Guillemyn
- Center for Medical Genetics, Ghent University Hospital, Ghent, Belgium
| | - Sofie Symoens
- Center for Medical Genetics, Ghent University Hospital, Ghent, Belgium
| | - Ana Berta Sousa
- Department of Genetics, Hospital de Santa Maria de Lisboa, Lisbon, Portugal
| | - Ana Medeira
- Department of Genetics, Hospital de Santa Maria de Lisboa, Lisbon, Portugal
| | - Margo Whiteford
- Department of Clinical Genetics, Southern General Hospital, Glasgow, United Kingdom
| | - Trinh Hermanns-Lê
- Department of Dermatopathology, Liège University Hospital, Liège, Belgium
| | - Paul J Coucke
- Center for Medical Genetics, Ghent University Hospital, Ghent, Belgium
| | - Anne De Paepe
- Center for Medical Genetics, Ghent University Hospital, Ghent, Belgium
| | - Fransiska Malfait
- Center for Medical Genetics, Ghent University Hospital, Ghent, Belgium
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BMP-1/tolloid-like proteinases synchronize matrix assembly with growth factor activation to promote morphogenesis and tissue remodeling. Matrix Biol 2015; 44-46:14-23. [DOI: 10.1016/j.matbio.2015.02.006] [Citation(s) in RCA: 96] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2014] [Revised: 02/10/2015] [Accepted: 02/10/2015] [Indexed: 11/20/2022]
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Targeted deletion of collagen V in tendons and ligaments results in a classic Ehlers-Danlos syndrome joint phenotype. THE AMERICAN JOURNAL OF PATHOLOGY 2015; 185:1436-47. [PMID: 25797646 DOI: 10.1016/j.ajpath.2015.01.031] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/30/2014] [Revised: 12/11/2014] [Accepted: 01/02/2015] [Indexed: 01/10/2023]
Abstract
Collagen V mutations underlie classic Ehlers-Danlos syndrome, and joint hypermobility is an important clinical manifestation. We define the function of collagen V in tendons and ligaments, as well as the role of alterations in collagen V expression in the pathobiology in classic Ehlers-Danlos syndrome. A conditional Col5a1(flox/flox) mouse model was bred with Scleraxis-Cre mice to create a targeted tendon and ligament Col5a1-null mouse model, Col5a1(Δten/Δten). Targeting was specific, resulting in collagen V-null tendons and ligaments. Col5a1(Δten/Δten) mice demonstrated decreased body size, grip weakness, abnormal gait, joint laxity, and early-onset osteoarthritis. These gross changes were associated with abnormal fiber organization, as well as altered collagen fibril structure with increased fibril diameters and decreased fibril number that was more severe in a major joint stabilizing ligament, the anterior cruciate ligament (ACL), than in the flexor digitorum longus tendon. The ACL also had a higher collagen V content than did the flexor digitorum longus tendon. The collagen V-null ACL and flexor digitorum longus tendon both had significant alterations in mechanical properties, with ACL exhibiting more severe changes. The data demonstrate critical differential regulatory roles for collagen V in tendon and ligament structure and function and suggest that collagen V regulatory dysfunction is associated with an abnormal joint phenotype, similar to the hypermobility phenotype in classic Ehlers-Danlos syndrome.
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25
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Extended interaction network of procollagen C-proteinase enhancer-1 in the extracellular matrix. Biochem J 2014; 457:137-49. [PMID: 24117177 DOI: 10.1042/bj20130295] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
PCPE-1 (procollagen C-proteinase enhancer-1) is an extracellular matrix glycoprotein that can stimulate procollagen processing by procollagen C-proteinases such as BMP-1 (bone morphogenetic protein 1). PCPE-1 interacts with several proteins in addition to procollagens and BMP-1, suggesting that it could be involved in biological processes other than collagen maturation. We thus searched for additional partners of PCPE-1 in the extracellular matrix, which could provide new insights into its biological roles. We identified 17 new partners of PCPE-1 by SPR (surface plasmon resonance) imaging. PCPE-1 forms a transient complex with the β-amyloid peptide, whereas it forms high or very high affinity complexes with laminin-111 (KD=58.8 pM), collagen VI (KD=9.5 nM), TSP-1 (thrombospondin-1) (KD1=19.9 pM, KD2=14.5 nM), collagen IV (KD=49.4 nM) and endostatin, a fragment of collagen XVIII (KD1=0.30 nM, KD2=1.1 nM). Endostatin binds to the NTR (netrin-like) domain of PCPE-1 and decreases the degree of superstimulation of PCPE-1 enhancing activity by heparin. The analysis of the PCPE-1 interaction network based on Gene Ontology terms suggests that, besides its role in collagen deposition, PCPE-1 might be involved in tumour growth, neurodegenerative diseases and angiogenesis. In vitro assays have indeed shown that the CUB1CUB2 (where CUB is complement protein subcomponents C1r/C1s, urchin embryonic growth factor and BMP-1) fragment of PCPE-1 inhibits angiogenesis.
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Large-scale investigation of Leishmania interaction networks with host extracellular matrix by surface plasmon resonance imaging. Infect Immun 2013; 82:594-606. [PMID: 24478075 DOI: 10.1128/iai.01146-13] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023] Open
Abstract
We have set up an assay to study the interactions of live pathogens with their hosts by using protein and glycosaminoglycan arrays probed by surface plasmon resonance imaging. We have used this assay to characterize the interactions of Leishmania promastigotes with ~70 mammalian host biomolecules (extracellular proteins, glycosaminoglycans, growth factors, cell surface receptors). We have identified, in total, 27 new partners (23 proteins, 4 glycosaminoglycans) of procyclic promastigotes of six Leishmania species and 18 partners (15 proteins, 3 glycosaminoglycans) of three species of stationary-phase promastigotes for all the strains tested. The diversity of the interaction repertoires of Leishmania parasites reflects their dynamic and complex interplay with their mammalian hosts, which depends mostly on the species and strains of Leishmania. Stationary-phase Leishmania parasites target extracellular matrix proteins and glycosaminoglycans, which are highly connected in the extracellular interaction network. Heparin and heparan sulfate bind to most Leishmania strains tested, and 6-O-sulfate groups play a crucial role in these interactions. Numerous Leishmania strains bind to tropoelastin, and some strains are even able to degrade it. Several strains interact with collagen VI, which is expressed by macrophages. Most Leishmania promastigotes interact with several regulators of angiogenesis, including antiangiogenic factors (endostatin, anastellin) and proangiogenic factors (ECM-1, VEGF, and TEM8 [also known as anthrax toxin receptor 1]), which are regulated by hypoxia. Since hypoxia modulates the infection of macrophages by the parasites, these interactions might influence the infection of host cells by Leishmania.
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Smith SM, Zhang G, Birk DE. Collagen V localizes to pericellular sites during tendon collagen fibrillogenesis. Matrix Biol 2013; 33:47-53. [PMID: 23954412 DOI: 10.1016/j.matbio.2013.08.003] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2013] [Revised: 08/07/2013] [Accepted: 08/07/2013] [Indexed: 10/26/2022]
Abstract
During tendon development collagen fibrillogenesis occurs in extracellular micro-domains defined by the tenocytes. This permits cellular regulation of the extracellular steps involved in the tissue-specific matrix assembly required for function. The hypothesis tested here is that collagen V associates with the tenocyte surface where it functions in regulation of collagen assembly and cell-directed fibril deposition. The in vitro and in vivo data demonstrate that collagen V is a quantitatively minor component of the tendon. It is preferentially localized on the tenocyte surface as distinct foci in tendons and in cell culture. In vitro data indicate that this interaction with the tenocyte is not HSPG GAG-dependent. Collagen V is present as the mature, processed form, is absent from the media, and is a significant part of the detergent-insoluble cell layer, presumably as part of a membrane-associated complex. In contrast, procollagen I is not efficiently processed and is found predominantly in the culture media. Our data suggest that the regulatory role of collagen V requires collagen V to occupy a different cellular niche from the structural collagen I. In monolayer cultures, the conversion to the tissue form of collagen V and its deposition with the cell layer suggest efficient engagement of procollagen V with pericellular receptors and processing enzymes. The secretion of collagen I into the media and inefficient processing of procollagen I suggest reduced accessibility to these pericellular molecules due to disengagement from the cell surface. This all points to differential spatial localization of collagen V as a mechanism to optimize its regulatory roles during the cell-surface directed steps in tendon collagen fibril assembly.
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Affiliation(s)
- Simone M Smith
- Department of Molecular Pharmacology & Physiology, Morsani College of Medicine, University of South Florida, Tampa, FL, USA
| | - Guiyun Zhang
- Department of Pathology, Anatomy & Cell Biology, Thomas Jefferson University, Philadelphia, PA, USA
| | - David E Birk
- Department of Molecular Pharmacology & Physiology, Morsani College of Medicine, University of South Florida, Tampa, FL, USA.
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Malfait F, Kariminejad A, Van Damme T, Gauche C, Syx D, Merhi-Soussi F, Gulberti S, Symoens S, Vanhauwaert S, Willaert A, Bozorgmehr B, Kariminejad M, Ebrahimiadib N, Hausser I, Huysseune A, Fournel-Gigleux S, De Paepe A. Defective initiation of glycosaminoglycan synthesis due to B3GALT6 mutations causes a pleiotropic Ehlers-Danlos-syndrome-like connective tissue disorder. Am J Hum Genet 2013; 92:935-45. [PMID: 23664118 DOI: 10.1016/j.ajhg.2013.04.016] [Citation(s) in RCA: 90] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2013] [Revised: 04/11/2013] [Accepted: 04/19/2013] [Indexed: 10/26/2022] Open
Abstract
Proteoglycans are important components of cell plasma membranes and extracellular matrices of connective tissues. They consist of glycosaminoglycan chains attached to a core protein via a tetrasaccharide linkage, whereby the addition of the third residue is catalyzed by galactosyltransferase II (β3GalT6), encoded by B3GALT6. Homozygosity mapping and candidate gene sequence analysis in three independent families, presenting a severe autosomal-recessive connective tissue disorder characterized by skin fragility, delayed wound healing, joint hyperlaxity and contractures, muscle hypotonia, intellectual disability, and a spondyloepimetaphyseal dysplasia with bone fragility and severe kyphoscoliosis, identified biallelic B3GALT6 mutations, including homozygous missense mutations in family 1 (c.619G>C [p.Asp207His]) and family 3 (c.649G>A [p.Gly217Ser]) and compound heterozygous mutations in family 2 (c.323_344del [p.Ala108Glyfs(∗)163], c.619G>C [p.Asp207His]). The phenotype overlaps with several recessive Ehlers-Danlos variants and spondyloepimetaphyseal dysplasia with joint hyperlaxity. Affected individuals' fibroblasts exhibited a large decrease in ability to prime glycosaminoglycan synthesis together with impaired glycanation of the small chondroitin/dermatan sulfate proteoglycan decorin, confirming β3GalT6 loss of function. Dermal electron microcopy disclosed abnormalities in collagen fibril organization, in line with the important regulatory role of decorin in this process. A strong reduction in heparan sulfate level was also observed, indicating that β3GalT6 deficiency alters synthesis of both main types of glycosaminoglycans. In vitro wound healing assay revealed a significant delay in fibroblasts from two index individuals, pointing to a role for glycosaminoglycan defect in impaired wound repair in vivo. Our study emphasizes a crucial role for β3GalT6 in multiple major developmental and pathophysiological processes.
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29
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Collagen VI in cancer and its biological mechanisms. Trends Mol Med 2013; 19:410-7. [PMID: 23639582 DOI: 10.1016/j.molmed.2013.04.001] [Citation(s) in RCA: 113] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2013] [Revised: 03/26/2013] [Accepted: 04/02/2013] [Indexed: 12/21/2022]
Abstract
Collagen VI is a widely distributed extracellular matrix protein highly expressed in a variety of cancers that favors tumor growth and progression. A growing number of studies indicate that collagen VI directly affects malignant cells by acting on the Akt-GSK-3β-β-catenin-TCF/LEF axis, enhancing the production of protumorigenic factors and inducing epithelial-mesenchymal transition. Moreover, it affects the tumor microenvironment by increasing the recruitment of macrophages and endothelial cells, thus promoting tumor inflammation and angiogenesis. Furthermore, collagen VI promotes chemotherapy resistance and can be regarded as a potential biomarker for cancer diagnosis. Collectively, these findings strongly support a role for collagen VI as an important regulator in tumors and provide new targets for cancer therapies.
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High prevalence of eosinophilic esophagitis in patients with inherited connective tissue disorders. J Allergy Clin Immunol 2013; 132:378-86. [PMID: 23608731 DOI: 10.1016/j.jaci.2013.02.030] [Citation(s) in RCA: 139] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2012] [Revised: 02/14/2013] [Accepted: 02/14/2013] [Indexed: 12/13/2022]
Abstract
BACKGROUND Eosinophilic esophagitis (EoE) is an emerging chronic inflammatory disease mediated by immune hypersensitization to multiple foods and strongly associated with atopy and esophageal remodeling. OBJECTIVE We provide clinical and molecular evidence indicating a high prevalence of EoE in patients with inherited connective tissue disorders (CTDs). METHODS We examined the rate of EoE among patients with CTDs and subsequently analyzed esophageal mRNA transcript profiles in patients with EoE with or without CTD features. RESULTS We report a cohort of 42 patients with EoE with a CTD-like syndrome, representing 0.8% of patients with CTDs and 1.3% of patients with EoE within our hospital-wide electronic medical record database and our EoE research registry, respectively. An 8-fold risk of EoE in patients with CTDs (relative risk, 8.1; 95% confidence limit, 5.1-12.9; χ(2)1 = 112.0; P < 10(-3)) was present compared with the general population. Esophageal transcript profiling identified a distinct subset of genes, including COL8A2, in patients with EoE and CTDs. CONCLUSION There is a remarkable association of EoE with CTDs and evidence for a differential expression of genes involved in connective tissue repair in this cohort. Thus, we propose stratification of patients with EoE and CTDs into a subset referred to as EoE-CTD.
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31
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Ritelli M, Dordoni C, Venturini M, Chiarelli N, Quinzani S, Traversa M, Zoppi N, Vascellaro A, Wischmeijer A, Manfredini E, Garavelli L, Calzavara-Pinton P, Colombi M. Clinical and molecular characterization of 40 patients with classic Ehlers-Danlos syndrome: identification of 18 COL5A1 and 2 COL5A2 novel mutations. Orphanet J Rare Dis 2013; 8:58. [PMID: 23587214 PMCID: PMC3653713 DOI: 10.1186/1750-1172-8-58] [Citation(s) in RCA: 88] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2013] [Accepted: 03/29/2013] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND Classic Ehlers-Danlos syndrome (cEDS) is a rare autosomal dominant connective tissue disorder that is primarily characterized by skin hyperextensibility, abnormal wound healing/atrophic scars, and joint hypermobility. A recent study demonstrated that more than 90% of patients who satisfy all of these major criteria harbor a type V collagen (COLLV) defect. METHODS This cohort included 40 patients with cEDS who were clinically diagnosed according to the Villefranche nosology. The flowchart that was adopted for mutation detection consisted of sequencing the COL5A1 gene and, if no mutation was detected, COL5A2 analysis. In the negative patients the presence of large genomic rearrangements in COL5A1 was investigated using MLPA, and positive results were confirmed via SNP-array analysis. RESULTS We report the clinical and molecular characterization of 40 patients from 28 families, consisting of 14 pediatric patients and 26 adults. A family history of cEDS was present in 9 patients. The majority of the patients fulfilled all the major diagnostic criteria for cEDS; atrophic scars were absent in 2 females, skin hyperextensibility was not detected in a male and joint hypermobility was negative in 8 patients (20% of the entire cohort). Wide inter- and intra-familial phenotypic heterogeneity was observed. We identified causal mutations with a detection rate of approximately 93%. In 25/28 probands, COL5A1 or COL5A2 mutations were detected. Twenty-one mutations were in the COL5A1 gene, 18 of which were novel (2 recurrent). Of these, 16 mutations led to nonsense-mediated mRNA decay (NMD) and to COLLV haploinsufficiency and 5 mutations were structural. Two novel COL5A2 splice mutations were detected in patients with the most severe phenotypes. The known p. (Arg312Cys) mutation in the COL1A1 gene was identified in one patient with vascular-like cEDS. CONCLUSIONS Our findings highlight that the three major criteria for cEDS are useful and sufficient for cEDS clinical diagnosis in the large majority of the patients. The borderline patients for whom these criteria fail can be diagnosed when minor signs of connective tissue diseases and family history are present and when genetic testing reveals a defect in COLLV. Our data also confirm that COL5A1 and COL5A2 are the major, if not the only, genes involved in cEDS.
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Affiliation(s)
- Marco Ritelli
- Division of Biology and Genetics, Department of Molecular and Translational Medicine, University of Brescia, Brescia, Italy
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Abstract
The extracellular matrix (ECM) is a complex entity containing a large portfolio of structural proteins, signaling molecules, and proteases. Changes in the overall integrity and activational state of these ECM constituents can contribute to tissue structure and function, which is certainly true of the myocardium. Changes in the expression patterns and activational states of a family of ECM proteolytic enzymes, the matrix metalloproteinases (MMPs), have been identified in all forms of left ventricle remodeling and can be a contributory factor in the progression to heart failure. However, new clinical and basic research has identified some surprising and unpredicted changes in MMP profiles in left ventricle remodeling processes, such as with pressure or volume overload, as well as with myocardial infarction. From these studies, it has become recognized that proteolytic processing of signaling molecules by certain MMP types, particularly the transmembrane MMPs, actually may facilitate ECM accumulation and modulate fibroblast transdifferentiation; both are critical events in adverse left ventricle remodeling. Based on the ever-increasing substrates and diversity of biological actions of MMPs, it is likely that continued research about the relationship of left ventricle remodeling in this family of proteases will yield new insights into the ECM remodeling process and new therapeutic targets.
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Affiliation(s)
- Francis G Spinale
- Cardiovascular Translational Research Center, CBA, University of South Carolina School of Medicine, 6439 Garners Ferry Rd, Columbia, SC, USA.
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Symoens S, Syx D, Malfait F, Callewaert B, De Backer J, Vanakker O, Coucke P, De Paepe A. Comprehensive molecular analysis demonstrates type V collagen mutations in over 90% of patients with classic EDS and allows to refine diagnostic criteria. Hum Mutat 2012; 33:1485-93. [PMID: 22696272 DOI: 10.1002/humu.22137] [Citation(s) in RCA: 115] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2012] [Accepted: 06/01/2012] [Indexed: 12/12/2022]
Abstract
Type V collagen mutations are associated with classic Ehlers-Danlos Syndrome (EDS), but it is unknown for which proportion they account and to what extent other genes are involved. We analyzed COL5A1 and COL5A2 in 126 patients with a diagnosis or suspicion of classic EDS. In 93 patients, a type V collagen defect was found, of which 73 were COL5A1 mutations, 13 were COL5A2 mutations and seven were COL5A1 null-alleles with mutation unknown. The majority of the 73 COL5A1 mutations generated a COL5A1 null-allele, whereas one-third were structural mutations, scattered throughout COL5A1. All COL5A2 mutations were structural mutations. Reduced availability of type V collagen appeared to be the major disease-causing mechanism, besides other intra- and extracellular contributing factors. All type V collagen defects were identified within a group of 102 patients fulfilling all major clinical Villefranche criteria, that is, skin hyperextensibility, dystrophic scarring and joint hypermobility. No COL5A1/COL5A2 mutation was detected in 24 patients who displayed skin and joint hyperextensibility but lacked dystrophic scarring. Overall, over 90% of patients fulfilling all major Villefranche criteria for classic EDS were shown to harbor a type V collagen defect, which indicates that this is the major--if not only--cause of classic EDS.
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Affiliation(s)
- Sofie Symoens
- Center for Medical Genetics, Ghent University Hospital, Ghent, Belgium
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34
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In Vivo Evidence for a Bridging Role of a Collagen V Subtype at the Epidermis–Dermis Interface. J Invest Dermatol 2012; 132:1841-9. [DOI: 10.1038/jid.2012.56] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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35
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Abstract
The Ehlers-Danlos syndromes (EDSs) comprise a heterogeneous group of diseases, characterized by fragility of the soft connective tissues and widespread manifestations in skin, ligaments, joints, blood vessels and internal organs. The clinical spectrum varies from mild skin and joint hyperlaxity to severe physical disability and life-threatening vascular complications. The current Villefranche classification recognizes six subtypes, most of which are linked to mutations in genes encoding fibrillar collagens or enzymes involved in post-translational modification of these proteins. Mutations in type V and type III collagen cause classic or vascular EDS respectively, while mutations involving the processing of type I collagen are involved in the kyphoscoliosis, arthrochalasis and dermatosparaxis type of EDS. Establishing the correct EDS subtype has important implications for genetic counseling and management and is supported by specific biochemical and molecular investigations. Over the last years, several new EDS variants have been characterized which call for a refinement of the Villefranche classification. Moreover, the study of these diseases has brought new insights into the molecular pathogenesis of EDS by implicating genetic defects in the biosynthesis of other extracellular matrix (ECM) molecules, such as proteoglycans and tenascin-X, or genetic defects in molecules involved in intracellular trafficking, secretion and assembly of ECM proteins.
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Affiliation(s)
- A De Paepe
- Centre for Medical Genetics, Ghent University Hospital, Ghent University, De Pintelaan 185, Ghent, Belgium.
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36
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Veidal SS, Larsen DV, Chen X, Sun S, Zheng Q, Bay-Jensen AC, Leeming DJ, Nawrocki A, Larsen MR, Schett G, Karsdal MA. MMP mediated type V collagen degradation (C5M) is elevated in ankylosing spondylitis. Clin Biochem 2012; 45:541-6. [PMID: 22382088 DOI: 10.1016/j.clinbiochem.2012.02.007] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2011] [Revised: 02/06/2012] [Accepted: 02/09/2012] [Indexed: 12/17/2022]
Abstract
OBJECTIVES Type V collagen has been demonstrated to control fibril formation. The aim of this study was to develop an ELISA capable of detecting a fragment of type V collagen generated by MMP-2/9 and to evaluate the assay as biomarker for ankylosing spondylitis (AS). DESIGN AND METHODS A fragment unique to type V collagen and generated by both MMP-2/9 cleaved at the amino acid position 1317 (C5M) was selected for ELISA development. 40 AS patients and 40 age-matched controls were evaluated. RESULTS An ELISA detecting C5M with inter- and intra-assay variations of 9.1% and 4.4% was developed. C5M levels were significantly higher in AS patients compared to controls, 229% (p<0.0001). The diagnostic AUC was 83%. CONCLUSIONS This ELISA is the first for detecting type V collagen degradation. AS patients had highly elevated levels of MMP mediated type V collagen degradation. The prognostic and diagnostic values need to be further investigated in additional clinical settings.
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Cromar GL, Xiong X, Chautard E, Ricard-Blum S, Parkinson J. Toward a systems level view of the ECM and related proteins: a framework for the systematic definition and analysis of biological systems. Proteins 2012; 80:1522-44. [PMID: 22275077 DOI: 10.1002/prot.24036] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2011] [Revised: 12/19/2011] [Accepted: 12/29/2011] [Indexed: 12/20/2022]
Abstract
Advances in high throughput 'omic technologies are starting to provide unprecedented insights into how components of biological systems are organized and interact. Key to exploiting these datasets is the definition of the components that comprise the system of interest. Although a variety of knowledge bases exist that capture such information, a major challenge is determining how these resources may be best utilized. Here we present a systematic curation strategy to define a systems-level view of the human extracellular matrix (ECM)--a three-dimensional meshwork of proteins and polysaccharides that impart structure and mechanical stability to tissues. Employing our curation strategy we define a set of 357 proteins that represent core components of the ECM, together with an additional 524 genes that mediate related functional roles, and construct a map of their physical interactions. Topological properties help identify modules of functionally related proteins, including those involved in cell adhesion, bone formation and blood clotting. Because of its major role in cell adhesion, proliferation and morphogenesis, defects in the ECM have been implicated in cancer, atherosclerosis, asthma, fibrosis, and arthritis. We use MeSH annotations to identify modules enriched for specific disease terms that aid to strengthen existing as well as predict novel gene-disease associations. Mapping expression and conservation data onto the network reveal modules evolved in parallel to convey tissue-specific functionality on otherwise broadly expressed units. In addition to demonstrating an effective workflow for defining biological systems, this study crystallizes our current knowledge surrounding the organization of the ECM.
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Affiliation(s)
- Graham L Cromar
- Department of Molecular Genetics, University of Toronto, Toronto, Ontario M5S 1A8, Canada
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Sun M, Chen S, Adams SM, Florer JB, Liu H, Kao WWY, Wenstrup RJ, Birk DE. Collagen V is a dominant regulator of collagen fibrillogenesis: dysfunctional regulation of structure and function in a corneal-stroma-specific Col5a1-null mouse model. J Cell Sci 2011; 124:4096-105. [PMID: 22159420 DOI: 10.1242/jcs.091363] [Citation(s) in RCA: 124] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Collagen V is a regulatory fibril-forming collagen that forms heterotypic fibrils with collagen I. Deletion of collagen V in the mouse is associated with a lack of fibril assembly in the embryonic mesenchyme, with a resultant lethal phenotype. The current work elucidates the regulatory roles of collagen V during development and growth of tissues. A conditional mouse model with a mutation in Col5a1 was developed using a Cre-loxP approach. Col5a1 was ablated in Col5a1(flox/flox) mice using a cornea stroma-specific Kera-Cre driver mouse to produce a bitransgenic Col5a1(Δst/Δst) line that is null for collagen V. This permits analyses of the corneal stroma, a widely used model for studies of collagen V. The collagen-V-knockout stroma demonstrated severe dysfunctional regulation of fibrillogenesis. Fibril diameters were significantly increased, with an abnormal, heterogeneous distribution; fibril structure was abnormal, fibril number was decreased and lamellae were disorganized with decreased stroma thickness. The phenotype was more severe in the anterior versus posterior stroma. Opacity was demonstrated throughout the Col5a1(Δst/Δst) stroma, with significantly increased haze intensity compared with control mice. These data indicate central regulatory roles for collagen V in fibril and matrix assembly during tissue development, with dysfunctional regulation resulting in a functional loss of transparency.
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Affiliation(s)
- Mei Sun
- Department of Pathology and Cell Biology, University of South Florida College of Medicine, 12901 Bruce B. Downs Blvd, Tampa, FL 33612, USA
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Sirica AE. The role of cancer-associated myofibroblasts in intrahepatic cholangiocarcinoma. Nat Rev Gastroenterol Hepatol 2011; 9:44-54. [PMID: 22143274 DOI: 10.1038/nrgastro.2011.222] [Citation(s) in RCA: 121] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Intrahepatic cholangiocarcinoma is typically characterized by a dense desmoplastic stroma, of which cancer-associated myofibroblasts (which express α-smooth muscle actin), are a major cellular component. These stromal myofibroblasts have a crucial role in accelerating the progression of intrahepatic cholangiocarcinoma and in promoting resistance to therapy through interactive autocrine and paracrine signaling pathways that promote malignant cell proliferation, migration, invasiveness, apoptosis resistance and/or epithelial-mesenchymal transition. These changes correlate with aggressive tumor behavior. Hypoxic desmoplasia and aberrant Hedgehog signaling between stromal myofibroblastic cells and cholangiocarcinoma cells are also critical modulators of intrahepatic cholangiocarcinoma progression and therapy resistance. A novel strategy has been developed to achieve improved therapeutic outcomes in patients with advanced intrahepatic cholangiocarcinoma, based on targeting of multiple interactive pathways between cancer-associated myofibroblasts and intrahepatic cholangiocarcinoma cells that are associated with disease progression and poor survival. Unique organotypic cell culture and orthotopic rat models of cholangiocarcinoma progression are well suited to the rapid preclinical testing of this potentially paradigm-shifting strategy.
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Affiliation(s)
- Alphonse E Sirica
- Division of Cellular and Molecular Pathogenesis, Department of Pathology, Virginia Commonwealth University School of Medicine, Richmond, Virginia, VA 23298-0297, USA.
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The role of cancer-associated myofibroblasts in intrahepatic cholangiocarcinoma. NATURE REVIEWS. GASTROENTEROLOGY & HEPATOLOGY 2011. [PMID: 22143274 DOI: 10.1038/nrgastro.2011.222.] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Intrahepatic cholangiocarcinoma is typically characterized by a dense desmoplastic stroma, of which cancer-associated myofibroblasts (which express α-smooth muscle actin), are a major cellular component. These stromal myofibroblasts have a crucial role in accelerating the progression of intrahepatic cholangiocarcinoma and in promoting resistance to therapy through interactive autocrine and paracrine signaling pathways that promote malignant cell proliferation, migration, invasiveness, apoptosis resistance and/or epithelial-mesenchymal transition. These changes correlate with aggressive tumor behavior. Hypoxic desmoplasia and aberrant Hedgehog signaling between stromal myofibroblastic cells and cholangiocarcinoma cells are also critical modulators of intrahepatic cholangiocarcinoma progression and therapy resistance. A novel strategy has been developed to achieve improved therapeutic outcomes in patients with advanced intrahepatic cholangiocarcinoma, based on targeting of multiple interactive pathways between cancer-associated myofibroblasts and intrahepatic cholangiocarcinoma cells that are associated with disease progression and poor survival. Unique organotypic cell culture and orthotopic rat models of cholangiocarcinoma progression are well suited to the rapid preclinical testing of this potentially paradigm-shifting strategy.
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Peysselon F, Xue B, Uversky VN, Ricard-Blum S. Intrinsic disorder of the extracellular matrix. MOLECULAR BIOSYSTEMS 2011; 7:3353-65. [PMID: 22009114 DOI: 10.1039/c1mb05316g] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
The extracellular matrix is very well organized at the supramolecular and tissue levels and little is known on the potential role of intrinsic disorder in promoting its organization. We predicted the amount of disorder and identified disordered regions in the human extracellular proteome with established computational tools. The extracellular proteome is significantly enriched in proteins comprising more than 50% of disorder compared to the complete human proteome. The enrichment is mostly due to long disordered regions containing at least 100 consecutive disordered residues. The amount of intrinsic disorder is heterogeneous in the extracellular protein families, with the most disordered being collagens and the small integrin-binding ligand N-linked glycoproteins. Although most domains found in extracellular proteins are structured, the fibronectin III domains contain a variable amount of disordered residues (up to 92%). Binding sites for heparin and integrins are found in disordered sequences of extracellular proteins. Intrinsic disorder is evenly distributed in hubs and ends in the interaction network of extracellular proteins with their extracellular partners. In contrast, extracellular hubs are significantly enriched in disorder in the network of extracellular proteins with their extracellular, membrane and intracellular partners. Disorder could thus provide the structural plasticity required for the hubs to interact with membrane and intracellular proteins. Organization and assembly of the extracellular matrix, development of mineralized tissues and cell-matrix adhesion are the biological processes overrepresented in the most disordered extracellular proteins. Extracellular disorder is associated with binding to growth factors, glycosaminoglycans and integrins at the molecular level.
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Affiliation(s)
- Franck Peysselon
- Institut de Biologie et Chimie des Protéines, UMR 5086 CNRS - Université Lyon 1, 7 Passage du Vercors, 69367 Lyon Cedex 07, France
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Wenstrup RJ, Smith SM, Florer JB, Zhang G, Beason DP, Seegmiller RE, Soslowsky LJ, Birk DE. Regulation of collagen fibril nucleation and initial fibril assembly involves coordinate interactions with collagens V and XI in developing tendon. J Biol Chem 2011; 286:20455-65. [PMID: 21467034 DOI: 10.1074/jbc.m111.223693] [Citation(s) in RCA: 97] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Collagens V and XI comprise a single regulatory type of fibril-forming collagen with multiple isoforms. Both co-assemble with collagen I or II to form heterotypic fibrils and have been implicated in regulation of fibril assembly. The objective of this study was to determine the roles of collagens V and XI in the regulation of tendon fibrillogenesis. Flexor digitorum longus tendons from a haplo-insufficient collagen V mouse model of classic Ehlers Danlos syndrome (EDS) had decreased biomechanical stiffness compared with controls consistent with joint laxity in EDS patients. However, fibril structure was relatively normal, an unexpected finding given the altered fibrils observed in dermis and cornea from this model. This suggested roles for other related molecules, i.e. collagen XI, and compound Col5a1(+/-),Col11a1(+/-) tendons had altered fibril structures, supporting a role for collagen XI. To further evaluate this, transcript expression was analyzed in wild type tendons. During development (E18-P10) both collagen V and XI were comparably expressed; however, collagen V predominated in mature (P30) tendons. The collagens had a similar expression pattern. Tendons with altered collagen V and/or XI expression (Col5a1(+/-); Col11a1(+/-); Col5a1(+/-),Col11a1(+/-); Col11a1(-/-); Col5a1(+/-),Col11a1(-/-)) were analyzed at E18. All genotypes demonstrated a reduced fibril number and altered structure. This phenotype was more severe with a reduction in collagen XI. However, the absence of collagen XI with a reduction in collagen V was associated with the most severe fibril phenotype. The data demonstrate coordinate roles for collagens V and XI in the regulation of fibril nucleation and assembly during tendon development.
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