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Crespo-Bravo M, Thorlacius-Ussing J, Nissen NI, Pedersen RS, Boisen MK, Liljefors M, Johansen AZ, Johansen JS, Karsdal MA, Willumsen N. Levels of type XVII collagen (BP180) ectodomain are elevated in circulation from patients with multiple cancer types and is prognostic for patients with metastatic colorectal cancer. BMC Cancer 2023; 23:949. [PMID: 37803411 PMCID: PMC10557271 DOI: 10.1186/s12885-023-11470-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2023] [Accepted: 10/02/2023] [Indexed: 10/08/2023] Open
Abstract
BACKGROUND Collagens are the major components of the extracellular matrix (ECM) and are known to contribute to tumor progression and metastasis. There are 28 different types of collagens each with unique functions in maintaining tissue structure and function. Type XVII collagen (BP180) is a type II transmembrane protein that provides stable adhesion between epithelial cells and the underlying basement membrane. Aberrant expression and ectodomain shedding of type XVII collagen have been associated with epithelial damage, tumor invasiveness, and metastasis in multiple tumor types and may consequently be used as a potential (non-invasive) biomarker in cancer and treatment target. METHOD An ELISA targeting the type XVII collagen ectodomain (PRO-C17) was developed for use in serum. PRO-C17 was measured in a cohort of patients with 11 different cancer types (n = 214) and compared to healthy controls (n = 23) (cohort 1). Based on the findings from cohort 1, PRO-C17 and its association with survival was explored in patients with metastatic colorectal cancer (mCRC) treated with bevacizumab in combination with chemotherapy (n = 212) (cohort 2). RESULTS PRO-C17 was robust and specific towards the ectodomain of type XVII collagen. In cohort 1, PRO-C17 levels were elevated (p < 0.05) in serum from patients with CRC, kidney, ovarian, bladder, breast, and head and neck cancer compared to healthy controls. PRO-C17 was especially good at discriminating between CRC patients and healthy controls with an AUROC of 0.904. In cohort 2, patients with mCRC and high levels (tertile 3) of PRO-C17 had shorter overall survival (OS) with a median OS of 390 days compared to 539 days for patients with low levels of PRO-C17. When evaluated by multivariate Cox regression analysis, high PRO-C17 was predictive for poor OS independent of risk factors and the tumor fibrosis biomarker PRO-C3. CONCLUSION PRO-C17 measures the ectodomain of type XVII collagen in serum and is a promising non-invasive biomarker that can aid in understanding tumor heterogeneity as well as elaborate on the role of collagen XVII in tumor progression. Moreover, the findings in the study proposes PRO-C17 as novel biomarker of epithelial damage in specific cancer types including CRC.
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Affiliation(s)
- Marina Crespo-Bravo
- Nordic Bioscience A/S, Herlev, 2730, Denmark.
- Department of Biomedical Sciences, University of Copenhagen, Copenhagen, 2200, Denmark.
| | | | | | - Rasmus S Pedersen
- Nordic Bioscience A/S, Herlev, 2730, Denmark
- Department of Biomedical Sciences, University of Copenhagen, Copenhagen, 2200, Denmark
| | - Mogens K Boisen
- Department of Oncology, Copenhagen University Hospital - Herlev and Gentofte, Herlev, 2730, Denmark
| | - Maria Liljefors
- Department of Clinical Science, Intervention and Technology, Karolinska University Hospital Huddinge, Stockholm, 141 57, Sweden
| | - Astrid Z Johansen
- Department of Oncology, Copenhagen University Hospital - Herlev and Gentofte, Herlev, 2730, Denmark
| | - Julia S Johansen
- Department of Oncology, Copenhagen University Hospital - Herlev and Gentofte, Herlev, 2730, Denmark
- Department of Medicine, Copenhagen University Hospital - Herlev and Gentofte, Herlev, Copenhagen, 2730, 2900, Denmark
- Department of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, 2200, Denmark
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Birnbaum SK, Cohen JD, Belfi A, Murray JI, Adams JRG, Chisholm AD, Sundaram MV. The proprotein convertase BLI-4 promotes collagen secretion prior to assembly of the Caenorhabditis elegans cuticle. PLoS Genet 2023; 19:e1010944. [PMID: 37721936 PMCID: PMC10538796 DOI: 10.1371/journal.pgen.1010944] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2023] [Revised: 09/28/2023] [Accepted: 08/30/2023] [Indexed: 09/20/2023] Open
Abstract
Some types of collagens, including transmembrane MACIT collagens and C. elegans cuticle collagens, are N-terminally cleaved at a dibasic site that resembles the consensus for furin or other proprotein convertases of the subtilisin/kexin (PCSK) family. Such cleavage may release transmembrane collagens from the plasma membrane and affect extracellular matrix assembly or structure. However, the functional consequences of such cleavage are unclear and evidence for the role of specific PCSKs is lacking. Here, we used endogenous collagen fusions to fluorescent proteins to visualize the secretion and assembly of the first collagen-based cuticle in C. elegans and then tested the role of the PCSK BLI-4 in these processes. Unexpectedly, we found that cuticle collagens SQT-3 and DPY-17 are secreted into the extraembryonic space several hours before cuticle matrix assembly. Furthermore, this early secretion depends on BLI-4/PCSK; in bli-4 and cleavage-site mutants, SQT-3 and DPY-17 are not efficiently secreted and instead form large intracellular puncta. Their later assembly into cuticle matrix is reduced but not entirely blocked. These data reveal a role for collagen N-terminal processing in intracellular trafficking and the control of matrix assembly in vivo. Our observations also prompt a revision of the classic model for C. elegans cuticle matrix assembly and the pre-cuticle-to-cuticle transition, suggesting that cuticle layer assembly proceeds via a series of regulated steps and not simply by sequential secretion and deposition.
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Affiliation(s)
- Susanna K. Birnbaum
- Department of Genetics, University of Pennsylvania Perelman School of Medicine, Philadelphia, Pennsylvania, United States of America
| | - Jennifer D. Cohen
- Department of Genetics, University of Pennsylvania Perelman School of Medicine, Philadelphia, Pennsylvania, United States of America
| | - Alexandra Belfi
- Department of Genetics, University of Pennsylvania Perelman School of Medicine, Philadelphia, Pennsylvania, United States of America
| | - John I. Murray
- Department of Genetics, University of Pennsylvania Perelman School of Medicine, Philadelphia, Pennsylvania, United States of America
| | - Jennifer R. G. Adams
- Departments of Neurobiology and Cell and Developmental Biology, School of Biological Sciences, University of California San Diego, San Diego, California, United States of America
| | - Andrew D. Chisholm
- Departments of Neurobiology and Cell and Developmental Biology, School of Biological Sciences, University of California San Diego, San Diego, California, United States of America
| | - Meera V. Sundaram
- Department of Genetics, University of Pennsylvania Perelman School of Medicine, Philadelphia, Pennsylvania, United States of America
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3
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Zhao Z, Deng J, Fan D. Green biomanufacturing in recombinant collagen biosynthesis: trends and selection in various expression systems. Biomater Sci 2023; 11:5439-5461. [PMID: 37401335 DOI: 10.1039/d3bm00724c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/05/2023]
Abstract
Collagen, classically derived from animal tissue, is an all-important protein material widely used in biomedical materials, cosmetics, fodder, food, etc. The production of recombinant collagen through different biological expression systems using bioengineering techniques has attracted significant interest in consideration of increasing market demand and the process complexity of extraction. Green biomanufacturing of recombinant collagen has become one of the focus topics. While the bioproduction of recombinant collagens (type I, II, III, etc.) has been commercialized in recent years, the biosynthesis of recombinant collagen is extremely challenging due to protein immunogenicity, yield, degradation, and other issues. The rapid development of synthetic biology allows us to perform a heterologous expression of proteins in diverse expression systems, thus optimizing the production and bioactivities of recombinant collagen. This review describes the research progress in the bioproduction of recombinant collagen over the past two decades, focusing on different expression systems (prokaryotic organisms, yeasts, plants, insects, mammalian and human cells, etc.). We also discuss the challenges and future trends in developing market-competitive recombinant collagens.
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Affiliation(s)
- Zilong Zhao
- Shaanxi Key Laboratory of Degradable Biomedical Materials, School of Chemical Engineering, Northwest University, Xi'an 710069, Shaanxi, China.
- Shaanxi R&D Center of Biomaterials and Fermentation Engineering, School of Chemical Engineering, Northwest University, Xi'an 710069, Shaanxi, China
- Biotech. & Biomed. Research Institute, Northwest University, Xi'an 710069, Shaanxi, China
| | - Jianjun Deng
- Shaanxi Key Laboratory of Degradable Biomedical Materials, School of Chemical Engineering, Northwest University, Xi'an 710069, Shaanxi, China.
- Shaanxi R&D Center of Biomaterials and Fermentation Engineering, School of Chemical Engineering, Northwest University, Xi'an 710069, Shaanxi, China
- Biotech. & Biomed. Research Institute, Northwest University, Xi'an 710069, Shaanxi, China
| | - Daidi Fan
- Shaanxi Key Laboratory of Degradable Biomedical Materials, School of Chemical Engineering, Northwest University, Xi'an 710069, Shaanxi, China.
- Shaanxi R&D Center of Biomaterials and Fermentation Engineering, School of Chemical Engineering, Northwest University, Xi'an 710069, Shaanxi, China
- Biotech. & Biomed. Research Institute, Northwest University, Xi'an 710069, Shaanxi, China
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4
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Dolmatov IY, Nizhnichenko VA. Extracellular Matrix of Echinoderms. Mar Drugs 2023; 21:417. [PMID: 37504948 PMCID: PMC10381214 DOI: 10.3390/md21070417] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2023] [Revised: 07/19/2023] [Accepted: 07/19/2023] [Indexed: 07/29/2023] Open
Abstract
This review considers available data on the composition of the extracellular matrix (ECM) in echinoderms. The connective tissue in these animals has a rather complex organization. It includes a wide range of structural ECM proteins, as well as various proteases and their inhibitors. Members of almost all major groups of collagens, various glycoproteins, and proteoglycans have been found in echinoderms. There are enzymes for the synthesis of structural proteins and their modification by polysaccharides. However, the ECM of echinoderms substantially differs from that of vertebrates by the lack of elastin, fibronectins, tenascins, and some other glycoproteins and proteoglycans. Echinoderms have a wide variety of proteinases, with serine, cysteine, aspartic, and metal peptidases identified among them. Their active centers have a typical structure and can break down various ECM molecules. Echinoderms are also distinguished by a wide range of proteinase inhibitors. The complex ECM structure and the variety of intermolecular interactions evidently explain the complexity of the mechanisms responsible for variations in the mechanical properties of connective tissue in echinoderms. These mechanisms probably depend not only on the number of cross-links between the molecules, but also on the composition of ECM and the properties of its proteins.
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Affiliation(s)
- Igor Yu Dolmatov
- A.V. Zhirmunsky National Scientific Center of Marine Biology, Far Eastern Branch, Russian Academy of Sciences, Palchevsky 17, 690041 Vladivostok, Russia
| | - Vladimir A Nizhnichenko
- A.V. Zhirmunsky National Scientific Center of Marine Biology, Far Eastern Branch, Russian Academy of Sciences, Palchevsky 17, 690041 Vladivostok, Russia
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5
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Birnbaum SK, Cohen JD, Belfi A, Murray JI, Adams JRG, Chisholm AD, Sundaram MV. The proprotein convertase BLI-4 promotes collagen secretion during assembly of the Caenorhabditis elegans cuticle. bioRxiv 2023:2023.06.06.542650. [PMID: 37333289 PMCID: PMC10274747 DOI: 10.1101/2023.06.06.542650] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/20/2023]
Abstract
Some types of collagens, including transmembrane MACIT collagens and C. elegans cuticle collagens, are N-terminally cleaved at a dibasic site that resembles the consensus for furin or other proprotein convertases of the subtilisin/kexin (PCSK) family. Such cleavage may release transmembrane collagens from the plasma membrane and affect extracellular matrix assembly or structure. However, the functional consequences of such cleavage are unclear and evidence for the role of specific PCSKs is lacking. Here, we used endogenous collagen fusions to fluorescent proteins to visualize the secretion and assembly of the first collagen-based cuticle in C. elegans and then tested the role of the PCSK BLI-4 in these processes. Unexpectedly, we found that cuticle collagens SQT-3 and DPY-17 are secreted into the extraembryonic space several hours before cuticle matrix assembly. Furthermore, this early secretion depends on BLI-4/PCSK; in bli-4 and cleavage-site mutants, SQT-3 and DPY-17 are not efficiently secreted and instead form large intracellular aggregates. Their later assembly into cuticle matrix is reduced but not entirely blocked. These data reveal a role for collagen N-terminal processing in intracellular trafficking and in the spatial and temporal restriction of matrix assembly in vivo . Our observations also prompt a revision of the classic model for C. elegans cuticle matrix assembly and the pre-cuticle-to-cuticle transition, suggesting that cuticle layer assembly proceeds via a series of regulated steps and not simply by sequential secretion and deposition.
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Affiliation(s)
- Susanna K Birnbaum
- Department of Genetics, University of Pennsylvania Perelman School of Medicine, Philadelphia PA
| | - Jennifer D Cohen
- Department of Genetics, University of Pennsylvania Perelman School of Medicine, Philadelphia PA
| | - Alexandra Belfi
- Department of Genetics, University of Pennsylvania Perelman School of Medicine, Philadelphia PA
| | - John I Murray
- Department of Genetics, University of Pennsylvania Perelman School of Medicine, Philadelphia PA
| | - Jennifer R G Adams
- Departments of Neurobiology and Cell and Developmental Biology, School of Biological Sciences, University of California San Diego, San Diego CA
| | - Andrew D Chisholm
- Departments of Neurobiology and Cell and Developmental Biology, School of Biological Sciences, University of California San Diego, San Diego CA
| | - Meera V Sundaram
- Department of Genetics, University of Pennsylvania Perelman School of Medicine, Philadelphia PA
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6
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Kemppainen AV, Finnilä MA, Heikkinen A, Härönen H, Izzi V, Kauppinen S, Saarakkala S, Pihlajaniemi T, Koivunen J. The CMS19 disease model specifies a pivotal role for collagen XIII in bone homeostasis. Sci Rep 2022; 12:5866. [PMID: 35393492 PMCID: PMC8990013 DOI: 10.1038/s41598-022-09653-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2021] [Accepted: 03/21/2022] [Indexed: 11/13/2022] Open
Abstract
Mutations in the COL13A1 gene result in congenital myasthenic syndrome type 19 (CMS19), a disease of neuromuscular synapses and including various skeletal manifestations, particularly facial dysmorphisms. The phenotypic consequences in Col13a1 null mice (Col13a1−/−) recapitulate the muscle findings of the CMS19 patients. Collagen XIII (ColXIII) is exists as two forms, a transmembrane protein and a soluble molecule. While the Col13a1−/− mice have poorly formed neuromuscular junctions, the prevention of shedding of the ColXIII ectodomain in the Col13a1tm/tm mice results in acetylcholine receptor clusters of increased size and complexity. In view of the bone abnormalities in CMS19, we here studied the tubular and calvarial bone morphology of the Col13a1−/− mice. We discovered several craniofacial malformations, albeit less pronounced ones than in the human disease, and a reduction of cortical bone mass in aged mice. In the Col13a1tm/tm mice, where ColXIII is synthesized but the ectodomain shedding is prevented due to a mutation in a protease recognition sequence, the cortical bone mass decreased as well with age and the cephalometric analyses revealed significant craniofacial abnormalities but no clear phenotypical pattern. To conclude, our data indicates an intrinsic role for ColXIII, particularly the soluble form, in the upkeep of bone with aging and suggests the possibility of previously undiscovered bone pathologies in patients with CMS19.
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Affiliation(s)
- A V Kemppainen
- ECM-Hypoxia Research Unit, Faculty of Biochemistry and Molecular Medicine, University of Oulu, P.O. Box 5400, 90014, Oulu, Finland
| | - M A Finnilä
- Research Unit of Medical Imaging, Physics and Technology, Faculty of Medicine, University of Oulu, P.O. Box 5000, 90014, Oulu, Finland
| | - A Heikkinen
- ECM-Hypoxia Research Unit, Faculty of Biochemistry and Molecular Medicine, University of Oulu, P.O. Box 5400, 90014, Oulu, Finland
| | - H Härönen
- ECM-Hypoxia Research Unit, Faculty of Biochemistry and Molecular Medicine, University of Oulu, P.O. Box 5400, 90014, Oulu, Finland
| | - V Izzi
- ECM-Hypoxia Research Unit, Faculty of Biochemistry and Molecular Medicine, University of Oulu, P.O. Box 5400, 90014, Oulu, Finland.,Faculty of Medicine, University of Oulu, 90014, Oulu, Finland.,Foundation for the Finnish Cancer Institute, Tukholmankatu 8, 00130, Helsinki, Finland
| | - S Kauppinen
- Research Unit of Medical Imaging, Physics and Technology, Faculty of Medicine, University of Oulu, P.O. Box 5000, 90014, Oulu, Finland
| | - S Saarakkala
- Research Unit of Medical Imaging, Physics and Technology, Faculty of Medicine, University of Oulu, P.O. Box 5000, 90014, Oulu, Finland.,Department of Diagnostic Radiology, Oulu University Hospital, Oulu, Finland
| | - T Pihlajaniemi
- ECM-Hypoxia Research Unit, Faculty of Biochemistry and Molecular Medicine, University of Oulu, P.O. Box 5400, 90014, Oulu, Finland
| | - J Koivunen
- ECM-Hypoxia Research Unit, Faculty of Biochemistry and Molecular Medicine, University of Oulu, P.O. Box 5400, 90014, Oulu, Finland.
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Picker J, Lan Z, Arora S, Green M, Hahn M, Cosgriff-Hernandez E, Hook M. Prokaryotic Collagen-Like Proteins as Novel Biomaterials. Front Bioeng Biotechnol 2022; 10:840939. [PMID: 35372322 PMCID: PMC8968730 DOI: 10.3389/fbioe.2022.840939] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2021] [Accepted: 02/10/2022] [Indexed: 12/13/2022] Open
Abstract
Collagens are the major structural component in animal extracellular matrices and are critical signaling molecules in various cell-matrix interactions. Its unique triple helical structure is enabled by tripeptide Gly-X-Y repeats. Understanding of sequence requirements for animal-derived collagen led to the discovery of prokaryotic collagen-like protein in the early 2000s. These prokaryotic collagen-like proteins are structurally similar to mammalian collagens in many ways. However, unlike the challenges associated with recombinant expression of mammalian collagens, these prokaryotic collagen-like proteins can be readily expressed in E. coli and are amenable to genetic modification. In this review article, we will first discuss the properties of mammalian collagen and provide a comparative analysis of mammalian collagen and prokaryotic collagen-like proteins. We will then review the use of prokaryotic collagen-like proteins to both study the biology of conventional collagen and develop a new biomaterial platform. Finally, we will describe the application of Scl2 protein, a streptococcal collagen-like protein, in thromboresistant coating for cardiovascular devices, scaffolds for bone regeneration, chronic wound dressing and matrices for cartilage regeneration.
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Affiliation(s)
- Jonathan Picker
- Center for Infectious and Inflammatory Diseases, Institute of Biosciences and Technology, Texas A&M, Houston, TX, United States
| | - Ziyang Lan
- Department of Biomedical Engineering, The University of Texas at Austin, Austin, TX, United States
| | - Srishtee Arora
- Center for Infectious and Inflammatory Diseases, Institute of Biosciences and Technology, Texas A&M, Houston, TX, United States
| | - Mykel Green
- Department of Biomedical Engineering, The University of Texas at Austin, Austin, TX, United States
| | - Mariah Hahn
- Department of Biomedical Engineering, Rensselaer Polytechnic Institute, Troy, NY, United States
| | | | - Magnus Hook
- Center for Infectious and Inflammatory Diseases, Institute of Biosciences and Technology, Texas A&M, Houston, TX, United States
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Yu CH, Khare E, Narayan OP, Parker R, Kaplan DL, Buehler MJ. ColGen: An end-to-end deep learning model to predict thermal stability of de novo collagen sequences. J Mech Behav Biomed Mater 2022; 125:104921. [PMID: 34758444 DOI: 10.1016/j.jmbbm.2021.104921] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2021] [Accepted: 10/21/2021] [Indexed: 11/22/2022]
Abstract
Collagen is the most abundant structural protein in humans, with dozens of sequence variants accounting for over 30% of the protein in an animal body. The fibrillar and hierarchical arrangements of collagen are critical in providing mechanical properties with high strength and toughness. Due to this ubiquitous role in human tissues, collagen-based biomaterials are commonly used for tissue repairs and regeneration, requiring chemical and thermal stability over a range of temperatures during materials preparation ex vivo and subsequent utility in vivo. Collagen unfolds from a triple helix to a random coil structure during a temperature interval in which the midpoint or Tm is used as a measure to evaluate the thermal stability of the molecules. However, finding a robust framework to facilitate the design of a specific collagen sequence to yield a specific Tm remains a challenge, including using conventional molecular dynamics modeling. Here we propose a de novo framework to provide a model that outputs the Tm values of input collagen sequences by incorporating deep learning trained on a large data set of collagen sequences and corresponding Tm values. By using this framework, we are able to quickly evaluate how mutations and order in the primary sequence affect the stability of collagen triple helices. Specifically, we confirm that mutations to glycines, mutations in the middle of a sequence, and short sequence lengths cause the greatest drop in Tm values.
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Abstract
Neuromuscular development is a multistep process and involves interactions among various extracellular and transmembrane molecules that facilitate the precise targeting of motor axons to synaptogenic regions of the target muscle. Collagenous proteins with transmembrane domains have recently emerged as molecules that play essential roles in multiple aspects of neuromuscular formation. Membrane-associated collagens with interrupted triple helices (MACITs) are classified as an unconventional subtype of the collagen superfamily and have been implicated in cell adhesion in a variety of tissues, including the neuromuscular system. Collagen XXV, the latest member of the MACITs, plays an essential role in motor axon growth within the developing muscle. In humans, loss-of-function mutations of collagen XXV result in developmental ocular motor disorders. In contrast, collagen XIII contributes to the formation and maintenance of neuromuscular junctions (NMJs), and disruption of its function leads to the congenital myasthenic syndrome. Transmembrane collagens are conserved not only in mammals but also in organisms such as C. elegans, where a single MACIT, COL-99, has been documented to function in motor innervation. Furthermore, in C. elegans, a collagen-like transmembrane protein, UNC-122, is implicated in the structural and functional integrity of the NMJ. This review article summarizes recent advances in understanding the roles of transmembrane collagens and underlying molecular mechanisms in multiple aspects of neuromuscular development and disorders.
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Affiliation(s)
- Tomoko Wakabayashi
- Department of Innovative Dementia Prevention, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
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10
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Koivunen J, Tu H, Kemppainen A, Anbazhagan P, Finnilä MA, Saarakkala S, Käpylä J, Lu N, Heikkinen A, Juffer AH, Heino J, Gullberg D, Pihlajaniemi T. Integrin α11β1 is a receptor for collagen XIII. Cell Tissue Res 2021; 383:1135-53. [PMID: 33306155 DOI: 10.1007/s00441-020-03300-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2020] [Accepted: 09/14/2020] [Indexed: 12/28/2022]
Abstract
Collagen XIII is a conserved transmembrane collagen mainly expressed in mesenchymal tissues. Previously, we have shown that collagen XIII modulates tissue development and homeostasis. Integrins are a family of receptors that mediate signals from the environment into the cells and vice versa. Integrin α11β1 is a collagen receptor known to recognize the GFOGER (O=hydroxyproline) sequence in collagens. Interestingly, collagen XIII and integrin α11β1 both have a role in the regulation of bone homeostasis. To study whether α11β1 is a receptor for collagen XIII, we utilized C2C12 cells transfected to express α11β1 as their only collagen receptor. The interaction between collagen XIII and integrin α11β1 was also confirmed by surface plasmon resonance and pull-down assays. We discovered that integrin α11β1 mediates cell adhesion to two collagenous motifs, namely GPKGER and GF(S)QGEK, that were shown to act as the recognition sites for the integrin α11-I domain. Furthermore, we studied the in vivo significance of the α11β1-collagen XIII interaction by crossbreeding α11 null mice (Itga11−/−) with mice overexpressing Col13a1 (Col13a1oe). When we evaluated the bone morphology by microcomputed tomography, Col13a1oe mice had a drastic bone overgrowth followed by severe osteoporosis, whereas the double mutant mouse line showed a much milder bone phenotype. To conclude, our data identifies integrin α11β1 as a new collagen XIII receptor and demonstrates that this ligand-receptor pair has a role in the maintenance of bone homeostasis.
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Bielajew BJ, Hu JC, Athanasiou KA. Collagen: quantification, biomechanics, and role of minor subtypes in cartilage. Nat Rev Mater 2020; 5:730-747. [PMID: 33996147 PMCID: PMC8114887 DOI: 10.1038/s41578-020-0213-1] [Citation(s) in RCA: 55] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 05/28/2020] [Indexed: 05/02/2023]
Abstract
Collagen is a ubiquitous biomaterial in vertebrate animals. Although each of its 28 subtypes contributes to the functions of many different tissues in the body, most studies on collagen or collagenous tissues have focussed on only one or two subtypes. With recent developments in analytical chemistry, especially mass spectrometry, significant advances have been made toward quantifying the different collagen subtypes in various tissues; however, high-throughput and low-cost methods for collagen subtype quantification do not yet exist. In this Review, we introduce the roles of collagen subtypes and crosslinks, and describe modern assays that enable a deep understanding of tissue physiology and disease states. Using cartilage as a model tissue, we describe the roles of major and minor collagen subtypes in detail; discuss known and unknown structure-function relationships; and show how tissue engineers may harness the functional characteristics of collagen to engineer robust neotissues.
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Affiliation(s)
- Benjamin J. Bielajew
- Department of Biomedical Engineering, University of California, Irvine, Irvine, CA 92617, USA
| | - Jerry C. Hu
- Department of Biomedical Engineering, University of California, Irvine, Irvine, CA 92617, USA
| | - Kyriacos A. Athanasiou
- Department of Biomedical Engineering, University of California, Irvine, Irvine, CA 92617, USA
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12
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Nyström A, Kiritsi D. Transmembrane collagens-Unexplored mediators of epidermal-dermal communication and tissue homeostasis. Exp Dermatol 2020; 30:10-16. [PMID: 32869371 DOI: 10.1111/exd.14180] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2020] [Revised: 08/11/2020] [Accepted: 08/24/2020] [Indexed: 12/26/2022]
Abstract
Tissue homeostasis is maintained through constant, dynamic and heterogeneous communication between cells and their microenvironment. Proteins that are at the same time active at the intracellular, cell periphery and deeper extracellular levels possess the ability to, on the individual molecular level, influence the cells and their microenvironment in a bidirectional manner. The transmembrane collagens are a family of such proteins, which are of notable interest for tissue development and homeostasis. In skin, expression of all transmembrane collagens has been reported and deficiency of transmembrane collagen XVII manifests with distinct skin phenotypes. Nevertheless, transmembrane collagens in skin remain understudied despite the association of them with epidermal wound healing and dermal fibrotic processes. Here, we present an overview of transmembrane collagens and put a spotlight on them as regulators of epidermal-dermal communication and as potential players in fibrinogenesis.
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Affiliation(s)
- Alexander Nyström
- Department of Dermatology, Faculty of Medicine, Medical Center - University of Freiburg, Freiburg, Germany
| | - Dimitra Kiritsi
- Department of Dermatology, Faculty of Medicine, Medical Center - University of Freiburg, Freiburg, Germany
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Heumüller SE, Talantikite M, Napoli M, Armengaud J, Mörgelin M, Hartmann U, Sengle G, Paulsson M, Moali C, Wagener R. C-terminal proteolysis of the collagen VI α3 chain by BMP-1 and proprotein convertase(s) releases endotrophin in fragments of different sizes. J Biol Chem 2019; 294:13769-13780. [PMID: 31346034 DOI: 10.1074/jbc.ra119.008641] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2019] [Revised: 07/23/2019] [Indexed: 01/31/2023] Open
Abstract
The assembly of collagen VI microfibrils is a multistep process in which proteolytic processing within the C-terminal globular region of the collagen VI α3 chain plays a major role. However, the mechanisms involved remain elusive. Moreover, C5, the short and most C-terminal domain of the α3 chain, recently has been proposed to be released as an adipokine that enhances tumor progression, fibrosis, inflammation, and insulin resistance and has been named "endotrophin." Serum endotrophin could be a useful biomarker to monitor the progression of such disorders as chronic obstructive pulmonary disease, systemic sclerosis, and kidney diseases. Here, using biochemical and isotopic MS-based analyses, we found that the extracellular metalloproteinase bone morphogenetic protein 1 (BMP-1) is involved in endotrophin release and determined the exact BMP-1 cleavage site. Moreover, we provide evidence that several endotrophin-containing fragments are present in various tissues and body fluids. Among these, a large C2-C5 fragment, which contained endotrophin, was released by furin-like proprotein convertase cleavage. By using immunofluorescence microscopy and EM, we also demonstrate that these proteolytic maturations occur after secretion of collagen VI tetramers and during microfibril assembly. Differential localization of N- and C-terminal regions of the collagen VI α3 chain revealed that cleavage products are deposited in tissue and cell cultures. The detailed information on the processing of the collagen VI α3 chain reported here provides a basis for unraveling the function of endotrophin (C5) and larger endotrophin-containing fragments and for refining their use as biomarkers of disease progression.
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Affiliation(s)
| | - Maya Talantikite
- Tissue Biology and Therapeutic Engineering Laboratory, UMR5305 CNRS/University of Lyon, 69367 Lyon, France
| | - Manon Napoli
- Tissue Biology and Therapeutic Engineering Laboratory, UMR5305 CNRS/University of Lyon, 69367 Lyon, France
| | - Jean Armengaud
- Commissariat à l'Energie Atomique (CEA)-Marcoule, DRF/JOLIOT/DMTS/SPI/Li2D, Innovative Technologies for Detection and Diagnostics Laboratory, 30200 Bagnols-sur-Cèze, France
| | | | - Ursula Hartmann
- Center for Biochemistry, Faculty of Medicine, University of Cologne, 50931 Cologne, Germany
| | - Gerhard Sengle
- Center for Biochemistry, Faculty of Medicine, University of Cologne, 50931 Cologne, Germany.,Cologne Center for Musculoskeletal Biomechanics (CCMB), 50931 Cologne, Germany.,Center for Molecular Medicine Cologne (CMMC), University of Cologne, 50931 Cologne, Germany.,Department of Pediatrics and Adolescent Medicine, Experimental Neonatology, Faculty of Medicine and University Hospital Cologne, 50931 Cologne, Germany
| | - Mats Paulsson
- Center for Biochemistry, Faculty of Medicine, University of Cologne, 50931 Cologne, Germany.,Cologne Center for Musculoskeletal Biomechanics (CCMB), 50931 Cologne, Germany.,Center for Molecular Medicine Cologne (CMMC), University of Cologne, 50931 Cologne, Germany.,Cluster of Excellence Cellular Stress Responses in Aging-Associated Diseases (CECAD), University of Cologne, 50931 Cologne, Germany
| | - Catherine Moali
- Tissue Biology and Therapeutic Engineering Laboratory, UMR5305 CNRS/University of Lyon, 69367 Lyon, France
| | - Raimund Wagener
- Center for Biochemistry, Faculty of Medicine, University of Cologne, 50931 Cologne, Germany .,Cologne Center for Musculoskeletal Biomechanics (CCMB), 50931 Cologne, Germany.,Center for Molecular Medicine Cologne (CMMC), University of Cologne, 50931 Cologne, Germany
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14
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Koivunen J, Kemppainen AV, Finnilä MA, Keski-Filppula R, Härönen H, Tu H, Pellikka H, Heikkinen A, Kylmäoja E, Sormunen R, Miinalainen I, Saarakkala S, Izzi V, Pihlajaniemi T. Collagen XIII-derived ectodomain regulates bone angiogenesis and intracortical remodeling. Matrix Biol 2019; 83:6-25. [PMID: 31220558 DOI: 10.1016/j.matbio.2019.06.005] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2019] [Revised: 06/12/2019] [Accepted: 06/12/2019] [Indexed: 12/23/2022]
Abstract
Osteoporosis is the most common degenerative bone disease that occurs when the balance of bone production and resorption is perturbed. Loss of bone mass or alteration in its quality leads to significant weakening of the bones and subsequently to higher fracture risk. Collagen XIII (ColXIII) is a conserved transmembrane protein expressed in many mesenchymal tissues. Here we show that ColXIII is a regulator of bone remodeling niche. In this study, we found that ColXIII expression is significantly upregulated in osteoporotic patients. In view of that, we studied bone homeostasis in ColXIII-overexpressing mice (Col13a1oe) up to 72 weeks of age and observed a cortical bone overgrowth followed by a drastic bone loss, together with increased bone vascularization. Moreover, our results demonstrate that the ColXIII-derived ectodomain enhances angiogenesis through β1-integrins and the JNK pathway. Consequently, these data suggest that ColXIII has a role in age-dependent cortical bone deterioration with possible implications for osteoporosis and fracture risk.
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Affiliation(s)
- Jarkko Koivunen
- Oulu Center for Cell-Matrix Research and Biocenter Oulu, Faculty of Biochemistry and Molecular Medicine, P.O. Box 5400, FIN-90014, University of Oulu, Oulu, Finland.
| | - Antti V Kemppainen
- Oulu Center for Cell-Matrix Research and Biocenter Oulu, Faculty of Biochemistry and Molecular Medicine, P.O. Box 5400, FIN-90014, University of Oulu, Oulu, Finland
| | - Mikko A Finnilä
- Research Unit of Medical Imaging, Physics and Technology, Faculty of Medicine, P.O. Box 5000, FIN-90014, University of Oulu, Oulu, Finland
| | - Riikka Keski-Filppula
- Oulu Center for Cell-Matrix Research and Biocenter Oulu, Faculty of Biochemistry and Molecular Medicine, P.O. Box 5400, FIN-90014, University of Oulu, Oulu, Finland
| | - Heli Härönen
- Oulu Center for Cell-Matrix Research and Biocenter Oulu, Faculty of Biochemistry and Molecular Medicine, P.O. Box 5400, FIN-90014, University of Oulu, Oulu, Finland
| | - Hongmin Tu
- Oulu Center for Cell-Matrix Research and Biocenter Oulu, Faculty of Biochemistry and Molecular Medicine, P.O. Box 5400, FIN-90014, University of Oulu, Oulu, Finland
| | - Henri Pellikka
- Oulu Center for Cell-Matrix Research and Biocenter Oulu, Faculty of Biochemistry and Molecular Medicine, P.O. Box 5400, FIN-90014, University of Oulu, Oulu, Finland
| | - Anne Heikkinen
- Oulu Center for Cell-Matrix Research and Biocenter Oulu, Faculty of Biochemistry and Molecular Medicine, P.O. Box 5400, FIN-90014, University of Oulu, Oulu, Finland
| | - Elina Kylmäoja
- Institute of Cancer Research and Translational Medicine, Department of Anatomy and Cell Biology, Medical Research Center, P.O. Box 5000, FIN-90014, University of Oulu, Oulu, Finland
| | - Raija Sormunen
- Biocenter Oulu, P.O. Box 5000, FIN-90014, University of Oulu, Oulu, Finland
| | - Ilkka Miinalainen
- Biocenter Oulu, P.O. Box 5000, FIN-90014, University of Oulu, Oulu, Finland
| | - Simo Saarakkala
- Research Unit of Medical Imaging, Physics and Technology, Faculty of Medicine, P.O. Box 5000, FIN-90014, University of Oulu, Oulu, Finland
| | - Valerio Izzi
- Oulu Center for Cell-Matrix Research and Biocenter Oulu, Faculty of Biochemistry and Molecular Medicine, P.O. Box 5400, FIN-90014, University of Oulu, Oulu, Finland
| | - Taina Pihlajaniemi
- Oulu Center for Cell-Matrix Research and Biocenter Oulu, Faculty of Biochemistry and Molecular Medicine, P.O. Box 5400, FIN-90014, University of Oulu, Oulu, Finland.
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15
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Härönen H, Zainul Z, Naumenko N, Sormunen R, Miinalainen I, Shakirzyanova A, Santoleri S, Kemppainen AV, Giniatullin R, Pihlajaniemi T, Heikkinen A. Correct expression and localization of collagen XIII are crucial for the normal formation and function of the neuromuscular system. Eur J Neurosci 2019; 49:1491-1511. [PMID: 30667565 DOI: 10.1111/ejn.14346] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2017] [Revised: 01/08/2019] [Accepted: 01/08/2019] [Indexed: 11/28/2022]
Abstract
Transmembrane collagen XIII has been linked to maturation of the musculoskeletal system. Its absence in mice (Col13a1-/- ) results in impaired neuromuscular junction (NMJ) differentiation and function, while transgenic overexpression (Col13a1oe ) leads to abnormally high bone mass. Similarly, loss-of-function mutations in COL13A1 in humans produce muscle weakness, decreased motor synapse function and mild dysmorphic skeletal features. Here, analysis of the exogenous overexpression of collagen XIII in various muscles revealed highly increased transcript and protein levels, especially in the diaphragm. Unexpectedly, the main location of exogenous collagen XIII in the muscle was extrasynaptic, in fibroblast-like cells, while some motor synapses were devoid of collagen XIII, possibly due to a dominant negative effect. Concomitantly, phenotypical changes in the NMJs of the Col13a1oe mice partly resembled those previously observed in Col13a1-/- mice. Namely, the overall increase in collagen XIII expression in the muscle produced both pre- and postsynaptic abnormalities at the NMJ, especially in the diaphragm. We discovered delayed and compromised acetylcholine receptor (AChR) clustering, axonal neurofilament aggregation, patchy acetylcholine vesicle (AChV) accumulation, disrupted adhesion of the nerve and muscle, Schwann cell invagination and altered evoked synaptic function. Furthermore, the patterns of the nerve trunks and AChR clusters in the diaphragm were broader in the adult muscles, and already prenatally in the Col13a1oe mice, suggesting collagen XIII involvement in the development of the neuromuscular system. Overall, these results confirm the role of collagen XIII at the neuromuscular synapses and highlight the importance of its correct expression and localization for motor synapse formation and function.
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Affiliation(s)
- Heli Härönen
- Faculty of Biochemistry and Molecular Medicine, Center for Cell-Matrix Research, Biocenter Oulu, University of Oulu, Oulu, Finland
| | - Zarin Zainul
- Department of Pediatrics, College of Medicine, University of Florida, Gainesville, Florida
| | - Nikolay Naumenko
- Department of Biotechnology and Molecular Medicine, A. I. Virtanen Institute for Molecular Sciences, University of Eastern Finland, Kuopio, Finland
| | - Raija Sormunen
- Biocenter Oulu Electron Microscopy Core Facility, University of Oulu, Oulu, Finland
| | - Ilkka Miinalainen
- Biocenter Oulu Electron Microscopy Core Facility, University of Oulu, Oulu, Finland
| | - Anastasia Shakirzyanova
- Department of Neurobiology, A. I. Virtanen Institute for Molecular Sciences, University of Eastern Finland, Kuopio, Finland.,Laboratory of Neurobiology, Department of Physiology, Kazan Federal University, Kazan, Russia
| | - Sabrina Santoleri
- Faculty of Biology, Medicine and Health, Division of Cell Matrix Biology and Regenerative Medicine, University of Manchester, Manchester, UK
| | - Antti V Kemppainen
- Faculty of Biochemistry and Molecular Medicine, Center for Cell-Matrix Research, Biocenter Oulu, University of Oulu, Oulu, Finland
| | - Rashid Giniatullin
- Department of Neurobiology, A. I. Virtanen Institute for Molecular Sciences, University of Eastern Finland, Kuopio, Finland.,Laboratory of Neurobiology, Department of Physiology, Kazan Federal University, Kazan, Russia
| | - Taina Pihlajaniemi
- Faculty of Biochemistry and Molecular Medicine, Center for Cell-Matrix Research, Biocenter Oulu, University of Oulu, Oulu, Finland
| | - Anne Heikkinen
- Faculty of Biochemistry and Molecular Medicine, Center for Cell-Matrix Research, Biocenter Oulu, University of Oulu, Oulu, Finland
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16
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Zhang H, Fredericks T, Xiong G, Qi Y, Rychahou PG, Li JD, Pihlajaniemi T, Xu W, Xu R. Membrane associated collagen XIII promotes cancer metastasis and enhances anoikis resistance. Breast Cancer Res 2018; 20:116. [PMID: 30285809 PMCID: PMC6167877 DOI: 10.1186/s13058-018-1030-y] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2018] [Accepted: 07/25/2018] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND Increased collagen expression and deposition are associated with cancer progression and poor prognosis in breast cancer patients. However, function and regulation of membrane-associated collagen in breast cancer have not been determined. Collagen XIII is a type II transmembrane protein within the collagen superfamily. Experiments in tissue culture and knockout mouse models show that collagen XIII is involved in cell adhesion and differentiation of certain cell types. In the present study, we determined roles of collagen XIII in breast cancer progression and metastasis. METHODS We analyzed the association of collagen XIII expression with breast cancer development and metastasis using published gene expression profiles generated from human breast cancer tissues. Utilizing gain- and loss- of function approaches and 3D culture assays, we investigated roles of collagen XIII in regulating invasive tumor growth. Using the tumorsphere/mammosphere formation assay and the detachment cell culture assay, we determined whether collagen XIII enhances cancer cell stemness and induces anoikis resistance. We also inhibited collagen XIII signaling with β1 integrin function-blocking antibody. Finally, using the lung colonization assay and the orthotopic mammary tumor model, we investigated roles of collagen XIII in regulating breast cancer colonization and metastasis. Cox proportional hazard (log-rank) test, two-sided Student's t-test (two groups) and one-way ANOVA (three or more groups) analyses were used in this study. RESULTS Collagen XIII expression is significantly higher in human breast cancer tissue compared with normal mammary gland. Increased collagen XIII mRNA levels in breast cancer tissue correlated with short distant recurrence free survival. We showed that collagen XIII expression promoted invasive tumor growth in 3D culture, enhanced cancer cell stemness, and induced anoikis resistance. Collagen XIII expression induced β1 integrin activation. Blocking β1 integrin activation significantly reduced collagen XIII-induced invasion and mammosphere formation. Importantly, silencing collagen XIII in MDA-MB-231 cells reduced lung colonization and metastasis. CONCLUSIONS Our results demonstrate a novel function of collagen XIII in promoting cancer metastasis, cell invasion, and anoikis resistance.
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Affiliation(s)
- Hui Zhang
- Department of Laboratory Medicine, The First Hospital of Jilin University, Changchun, 130021, Jilin Province, China.,UK Markey Cancer Center, University of Kentucky, Lexington, KY, 40536, USA
| | - Tricia Fredericks
- Division of Gynecologic Oncology, Department of Obstetrics and Gynecology, University of Kentucky, Lexington, KY, 40504, USA
| | - Gaofeng Xiong
- UK Markey Cancer Center, University of Kentucky, Lexington, KY, 40536, USA
| | - Yifei Qi
- UK Markey Cancer Center, University of Kentucky, Lexington, KY, 40536, USA
| | - Piotr G Rychahou
- Department of Surgery, College of Medicine, University of Kentucky, Lexington, KY, 40504, USA
| | - Jia-Da Li
- Center for Medical Genetics, School of Life Sciences, Central South University, Changsha, 410078, Hunan Province, China
| | - Taina Pihlajaniemi
- Center for Cell-Matrix Research and Biocenter Oulu, Faculty of Biochemistry and Molecular Medicine, University of Oulu, 90014, Oulu, Finland
| | - Wei Xu
- Department of Laboratory Medicine, The First Hospital of Jilin University, Changchun, 130021, Jilin Province, China.
| | - Ren Xu
- UK Markey Cancer Center, University of Kentucky, Lexington, KY, 40536, USA. .,Department of Pharmacology and Nutritional Sciences, University of Kentucky, Lexington, KY, 40536, USA.
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17
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Tu H, Pirskanen-Matell R, Heikkinen A, Oikarainen T, Risteli J, Pihlajaniemi T. Autoimmune antibodies to collagen XIII in myasthenia gravis patients. Muscle Nerve 2017; 57:506-510. [DOI: 10.1002/mus.25969] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2017] [Revised: 09/01/2017] [Accepted: 09/04/2017] [Indexed: 11/08/2022]
Affiliation(s)
- Hongmin Tu
- Centre of Excellence in Cell-Extracellular Matrix Research, Faculty of Biochemistry and Molecular Medicine, Biocenter Oulu; University of Oulu; FIN 90014 Oulu Finland
| | | | - Anne Heikkinen
- Centre of Excellence in Cell-Extracellular Matrix Research, Faculty of Biochemistry and Molecular Medicine, Biocenter Oulu; University of Oulu; FIN 90014 Oulu Finland
| | - Tuomo Oikarainen
- Centre of Excellence in Cell-Extracellular Matrix Research, Faculty of Biochemistry and Molecular Medicine, Biocenter Oulu; University of Oulu; FIN 90014 Oulu Finland
| | - Juha Risteli
- Department of Clinical Chemistry, Cancer and Translational Medicine Research Unit, Medical Research Center; University of Oulu and Northern Finland Laboratory Centre NordLab, Oulu University Hospital; Oulu Finland
| | - Taina Pihlajaniemi
- Centre of Excellence in Cell-Extracellular Matrix Research, Faculty of Biochemistry and Molecular Medicine, Biocenter Oulu; University of Oulu; FIN 90014 Oulu Finland
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18
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Ricard-Blum S, Vallet SD. Fragments generated upon extracellular matrix remodeling: Biological regulators and potential drugs. Matrix Biol 2017; 75-76:170-189. [PMID: 29133183 DOI: 10.1016/j.matbio.2017.11.005] [Citation(s) in RCA: 77] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2017] [Revised: 11/05/2017] [Accepted: 11/07/2017] [Indexed: 12/13/2022]
Abstract
The remodeling of the extracellular matrix (ECM) by several protease families releases a number of bioactive fragments, which regulate numerous biological processes such as autophagy, angiogenesis, adipogenesis, fibrosis, tumor growth, metastasis and wound healing. We review here the proteases which generate bioactive ECM fragments, their ECM substrates, the major bioactive ECM fragments, together with their biological properties and their receptors. The translation of ECM fragments into drugs is challenging and would take advantage of an integrative approach to optimize the design of pre-clinical and clinical studies. This could be done by building the contextualized interaction network of the ECM fragment repertoire including their parent proteins, remodeling proteinases, and their receptors, and by using mathematical disease models.
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Affiliation(s)
- Sylvie Ricard-Blum
- Univ Lyon, University Claude Bernard Lyon 1, CNRS, INSA Lyon, CPE, Institute of Molecular and Supramolecular Chemistry and Biochemistry, UMR 5246, F-69622 Villeurbanne cedex, France.
| | - Sylvain D Vallet
- Univ Lyon, University Claude Bernard Lyon 1, CNRS, INSA Lyon, CPE, Institute of Molecular and Supramolecular Chemistry and Biochemistry, UMR 5246, F-69622 Villeurbanne cedex, France.
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19
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Härönen H, Zainul Z, Tu H, Naumenko N, Sormunen R, Miinalainen I, Shakirzyanova A, Oikarainen T, Abdullin A, Martin P, Santoleri S, Koistinaho J, Silman I, Giniatullin R, Fox MA, Heikkinen A, Pihlajaniemi T. Collagen XIII secures pre- and postsynaptic integrity of the neuromuscular synapse. Hum Mol Genet 2017; 26:2076-2090. [DOI: 10.1093/hmg/ddx101] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2016] [Accepted: 03/10/2017] [Indexed: 01/01/2023] Open
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20
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Roumans NJ, Vink RG, Gielen M, Zeegers MP, Holst C, Wang P, Astrup A, Saris WH, Valsesia A, Hager J, van Baak MA, Mariman EC. Variation in extracellular matrix genes is associated with weight regain after weight loss in a sex-specific manner. Genes Nutr 2015; 10:56. [PMID: 26584808 DOI: 10.1007/s12263-015-0506-y] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/11/2015] [Accepted: 11/04/2015] [Indexed: 11/04/2022]
Abstract
The extracellular matrix (ECM) of adipocytes is important for body weight regulation. Here, we investigated whether genetic variation in ECM-related genes is associated with weight regain among participants of the European DiOGenes study. Overweight and obese subjects (n = 469, 310 females, 159 males) were on an 8-week low-calorie diet with a 6-month follow-up. Body weight was measured before and after the diet, and after follow-up. Weight maintenance scores (WMS, regained weight as percentage of lost weight) were calculated based on the weight data. Genotype data were retrieved for 2903 SNPs corresponding to 124 ECM-related genes. Regression analyses provided us with six significant SNPs associated with the WMS in males: 3 SNPs in the POSTN gene and a SNP in the LAMB1, COL23A1, and FBLN5 genes. For females, 1 SNP was found in the FN1 gene. The risk of weight regain was increased by: the C/C genotype for POSTN in a co-dominant model (OR 8.25, 95 % CI 2.85–23.88) and the T/C–C/C genotype in a dominant model (OR 4.88, 95 % CI 2.35–10.16); the A/A genotype for LAMB1 both in a co-dominant model (OR 18.43, 95 % CI 2.35–144.63) and in a recessive model (OR 16.36, 95 % CI 2.14–124.9); the G/A genotype for COL23A1 in a co-dominant model (OR 3.94, 95 % CI 1.28–12.10), or the A-allele in a dominant model (OR 2.86, 95 % CI 1.10–7.49); the A/A genotype for FBLN5 in a co-dominant model (OR 13.00, 95 % CI 1.61–104.81); and the A/A genotype for FN1 in a recessive model (OR 2.81, 95 % CI 1.40–5.63). Concluding, variants of ECM genes are associated with weight regain after weight loss in a sex-specific manner.
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Abstract
The extracellular matrix is comprised of 1100 core-matrisome and matrisome-associated proteins and of glycosaminoglycans. This structural scaffold contributes to the organization and mechanical properties of tissues and modulates cell behavior. The extracellular matrix is dynamic and undergoes constant remodeling, which leads to diseases if uncontrolled. Bioactive fragments, called matricryptins, are released from the extracellular proteins by limited proteolysis and have biological activities on their own. They regulate numerous physiological and pathological processes such as angiogenesis, cancer, diabetes, wound healing, fibrosis and infectious diseases and either improve or worsen the course of diseases depending on the matricryptins and on the molecular and biological contexts. Several protease families release matricryptins from core-matrisome and matrisome-associated proteins both in vitro and in vivo. The major proteases, which decrypt the extracellular matrix, are zinc metalloproteinases of the metzincin superfamily (matrixins, adamalysins and astacins), cysteine proteinases and serine proteases. Some matricryptins act as enzyme inhibitors, further connecting protease and matricryptin fates and providing intricate regulation of major physiopathological processes such as angiogenesis and tumorigenesis. They strengthen the role of the extracellular matrix as a key player in tissue failure and core-matrisome and matrisome-associated proteins as important therapeutic targets.
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Affiliation(s)
- Sylvie Ricard-Blum
- UMR 5086 CNRS - Université Lyon 1, 7 Passage du Vercors, 69367 Lyon Cedex 07, France.
| | - Sylvain D Vallet
- UMR 5086 CNRS - Université Lyon 1, 7 Passage du Vercors, 69367 Lyon Cedex 07, France.
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22
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Noreen R, Moenner M, Hwu Y, Petibois C. FTIR spectro-imaging of collagens for characterization and grading of gliomas. Biotechnol Adv 2012; 30:1432-46. [DOI: 10.1016/j.biotechadv.2012.03.009] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2011] [Revised: 02/23/2012] [Accepted: 03/06/2012] [Indexed: 01/07/2023]
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23
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Heikkinen A, Tu H, Pihlajaniemi T. Collagen XIII: a type II transmembrane protein with relevance to musculoskeletal tissues, microvessels and inflammation. Int J Biochem Cell Biol 2012; 44:714-7. [PMID: 22342189 DOI: 10.1016/j.biocel.2012.01.024] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2011] [Revised: 01/27/2012] [Accepted: 01/31/2012] [Indexed: 12/15/2022]
Abstract
Collagen XIII and the homologous collagens XXIII and XXV form a subgroup of type II transmembrane proteins within the collagen superfamily. Collagen XIII consists of a short cytosolic domain, a transmembrane domain and a large extracellular ectodomain, which may be shed into the pericellular matrix. It has been proposed that collagen XIII may function as an adhesion molecule, due to its cellular localization at focal contacts, numerous interactions with basement membrane (BM) and other extracellular matrix (ECM) proteins and expression at various cell-cell and cell-matrix junctions. Recent in vivo studies highlight its involvement in the development, differentiation and maturation of musculoskeletal tissues and vessels and in maintaining tissue integrity.
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Affiliation(s)
- Anne Heikkinen
- Center for Cell-Matrix Research and Biocenter Oulu, Department of Medical Biochemistry and Molecular Biology, PO Box 5000, 90014 University of Oulu, Finland.
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24
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Wirz JA, Boudko SP, Lerch TF, Chapman MS, Bächinger HP. Crystal structure of the human collagen XV trimerization domain: a potent trimerizing unit common to multiplexin collagens. Matrix Biol 2011; 30:9-15. [PMID: 20932905 PMCID: PMC3048825 DOI: 10.1016/j.matbio.2010.09.005] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2010] [Revised: 09/25/2010] [Accepted: 09/29/2010] [Indexed: 12/01/2022]
Abstract
Correct folding of the collagen triple helix requires a self-association step which selects and binds α-chains into trimers. Here we report the crystal structure of the trimerization domain of human type XV collagen. The trimerization domain of type XV collagen contains three monomers each composed of four β-sheets and an α-helix. The hydrophobic core of the trimer is devoid of solvent molecules and is shaped by β-sheet planes from each monomer. The trimerization domain is extremely stable and forms at picomolar concentrations. It is found that the trimerization domain of type XV collagen is structurally similar to that of type XVIII, despite only 32% sequence identity. High structural conservation indicates that the multiplexin trimerization domain represents a three dimensional fold that allows for sequence variability while retaining structural integrity necessary for tight and efficient trimerization.
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Affiliation(s)
- Jacqueline A. Wirz
- Research Department of Shriners Hospital for Children, 3101 SW Sam Jackson Pk. Rd., Portland, OR 97239, USA
- Department of Biochemistry and Molecular Biology, Oregon Health and Science University, 3191 SW Sam Jackson Pk. Rd., Portland, OR 97239, USA
| | - Sergei P. Boudko
- Research Department of Shriners Hospital for Children, 3101 SW Sam Jackson Pk. Rd., Portland, OR 97239, USA
- Department of Biochemistry and Molecular Biology, Oregon Health and Science University, 3191 SW Sam Jackson Pk. Rd., Portland, OR 97239, USA
| | - Thomas F. Lerch
- Department of Biochemistry and Molecular Biology, Oregon Health and Science University, 3191 SW Sam Jackson Pk. Rd., Portland, OR 97239, USA
| | - Michael S. Chapman
- Department of Biochemistry and Molecular Biology, Oregon Health and Science University, 3191 SW Sam Jackson Pk. Rd., Portland, OR 97239, USA
| | - Hans Peter Bächinger
- Research Department of Shriners Hospital for Children, 3101 SW Sam Jackson Pk. Rd., Portland, OR 97239, USA
- Department of Biochemistry and Molecular Biology, Oregon Health and Science University, 3191 SW Sam Jackson Pk. Rd., Portland, OR 97239, USA
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Latvanlehto A, Fox MA, Sormunen R, Tu H, Oikarainen T, Koski A, Naumenko N, Shakirzyanova A, Kallio M, Ilves M, Giniatullin R, Sanes JR, Pihlajaniemi T. Muscle-derived collagen XIII regulates maturation of the skeletal neuromuscular junction. J Neurosci 2010; 30:12230-41. [PMID: 20844119 DOI: 10.1523/JNEUROSCI.5518-09.2010] [Citation(s) in RCA: 83] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Formation, maturation, stabilization, and functional efficacy of the neuromuscular junction (NMJ) are orchestrated by transsynaptic and autocrine signals embedded within the synaptic cleft. Here, we demonstrate that collagen XIII, a nonfibrillar transmembrane collagen, is another such signal. We show that collagen XIII is expressed by muscle and its ectodomain can be proteolytically shed into the extracellular matrix. The collagen XIII protein was found present in the postsynaptic membrane and synaptic basement membrane. To identify a role for collagen XIII at the NMJ, mice were generated lacking this collagen. Morphological and ultrastructural analysis of the NMJ revealed incomplete adhesion of presynaptic and postsynaptic specializations in collagen XIII-deficient mice of both genders. Strikingly, Schwann cells erroneously enwrapped nerve terminals and invaginated into the synaptic cleft, resulting in a decreased contact surface for neurotransmission. Consistent with morphological findings, electrophysiological studies indicated both postsynaptic and presynaptic defects in Col13a1(-/-) mice, such as decreased amplitude of postsynaptic potentials, diminished probabilities of spontaneous release and reduced readily releasable neurotransmitter pool. To identify the role of collagen XIII at the NMJ, shed ectodomain of collagen XIII was applied to cultured myotubes, and it was found to advance acetylcholine receptor (AChR) cluster maturation. Together with the delay in AChR cluster development observed in collagen XIII-deficient mutants in vivo, these results suggest that collagen XIII plays an autocrine role in postsynaptic maturation of the NMJ. Altogether, the results presented here reveal that collagen XIII is a novel muscle-derived cue necessary for the maturation and function of the vertebrate NMJ.
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Li Y, Mo X, Kim D, Yu SM. Template-tethered collagen mimetic peptides for studying heterotrimeric triple-helical interactions. Biopolymers 2011; 95:94-104. [DOI: 10.1002/bip.21536] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2010] [Revised: 08/05/2010] [Accepted: 08/11/2010] [Indexed: 11/07/2022]
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Boudko SP, Sasaki T, Engel J, Lerch TF, Nix J, Chapman MS, Bächinger HP. Crystal structure of human collagen XVIII trimerization domain: A novel collagen trimerization Fold. J Mol Biol 2009; 392:787-802. [PMID: 19631658 DOI: 10.1016/j.jmb.2009.07.057] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2009] [Revised: 07/17/2009] [Accepted: 07/18/2009] [Indexed: 11/15/2022]
Abstract
Collagens contain a unique triple-helical structure with a repeating sequence -G-X-Y-, where proline and hydroxyproline are major constituents in X and Y positions, respectively. Folding of the collagen triple helix requires trimerization domains. Once trimerized, collagen chains are correctly aligned and the folding of the triple helix proceeds in a zipper-like fashion. Here we report the isolation, characterization, and crystal structure of the trimerization domain of human type XVIII collagen, a member of the multiplexin family. This domain differs from all other known trimerization domains in other collagens and exhibits a high trimerization potential at picomolar concentrations. Strong chain association and high specificity of binding are needed for multiplexins, which are present at very low levels.
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Affiliation(s)
- Sergei P Boudko
- Research Department of Shriners Hospital for Children, Portland, OR 97239, USA
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Jäälinoja J, Ylöstalo J, Beckett W, Hulmes DJS, Ala-Kokko L. Trimerization of collagen IX alpha-chains does not require the presence of the COL1 and NC1 domains. Biochem J 2008; 409:545-54. [PMID: 17880280 DOI: 10.1042/bj20070984] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Collagen IX is a heterotrimer of three alpha-chains, which consists of three COL domains (collagenous domains) (COL1-COL3) and four NC domains (non-collagenous domains) (NC1-NC4), numbered from the C-terminus. Although collagen IX chains have been shown to associate via their C-terminal NC1 domains and form a triple helix starting from the COL1 domain, it is not known whether chain association can occur at other sites and whether other collagenous and non-collagenous regions are involved. To address this question, we prepared five constructs, two long variants (beginning at the NC4 domain) and three short variants (beginning at the COL2 domain), all ending at the NC2 domain (or NC2 replaced by NC1), to study association and selection of collagen IX alpha-chains. Both long variants were able to associate with NC1 or NC2 at the C-terminus and form various disulfide-bonded trimers, but the specificity of chain selection was diminished compared with full-length chains. Trimers of the long variant ending at NC2 were shown to be triple helical by CD. Short variants were not able to assemble into disulfide-bonded trimers even in the presence of both conserved cysteine residues from the COL1-NC1 junction. Our results demonstrate that collagen IX alpha-chains can associate in the absence of COL1 and NC1 domains to form a triple helix, but the COL2-NC2 region alone is not sufficient for trimerization. The results suggest that folding of collagen IX is a co-operative process involving multiple COL and NC domains and that the COL1-NC1 region is important for chain specificity.
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Affiliation(s)
- Juha Jäälinoja
- Collagen Research Unit, Biocenter and Department of Medical Biochemistry and Molecular Biology, Oulu University, P.O. Box 5000, 90014 Oulu, Finland
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Boulègue C, Musiol HJ, Götz MG, Renner C, Moroder L. Natural and artificial cystine knots for assembly of homo- and heterotrimeric collagen models. Antioxid Redox Signal 2008; 10:113-25. [PMID: 17961005 DOI: 10.1089/ars.2007.1868] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Native collagens are molecules that are difficult to handle because of their high tendency towards aggregation and denaturation. It was discovered early on that synthetic collagenous peptides are more amenable to conformational characterization and thus can serve as useful models for structural and functional studies. Single-stranded collagenous peptides of high propensity to self-associate into triple-helical trimers were used for this purpose as well as interchain-crosslinked homotrimers assembled on synthetic scaffolds. With the growing knowledge of the biosynthetic pathways of natural collagens and the importance of their interchain disulfide crosslinks, which stabilize the triple-helical structure, native as well as de novo designed cystine knots have gained increasing attention in the assembly of triple-stranded collagen peptides. In addition, natural sequences of collagens were incorporated in order to biophysically characterize their functional epitopes. This review is focused on the methods developed over the years, and future perspectives for the production of collagen-mimicking synthetic and recombinant triple-helical homo- and heterotrimers.
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Affiliation(s)
- Cyril Boulègue
- Max-Planck-Institute of Biochemistry, Martinsried, Germany
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Snellman A, Tuomisto A, Koski A, Latvanlehto A, Pihlajaniemi T. The Role of Disulfide Bonds and α-Helical Coiled-coils in the Biosynthesis of Type XIII Collagen and Other Collagenous Transmembrane Proteins. J Biol Chem 2007; 282:14898-905. [PMID: 17344215 DOI: 10.1074/jbc.m609605200] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Type XIII collagen is a type II transmembrane protein with three collagenous (COL1-3) and four noncollagenous domains (NC1-4). The human alpha1(XIII) chain contains altogether eight cysteine residues. We introduced point mutations to six of the most N-terminal cysteine residues, and we show here that the two cysteines 117 and 119 at the end of the N-terminal noncollagenous domain (NC1) are responsible for linking the three alpha1(XIII) chains together by means of interchain disulfide bonds. In addition, the intracellular and transmembrane domains have an impact on trimer formation, whereas the cysteines in the transmembrane domain and the COL1, the NC2, and the C-terminal NC4 domains do not affect trimer formation. We also suggest that the first three noncollagenous domains (NC1-3) harbor repeating heptad sequences typical of alpha-helical coiled-coils, whereas the conserved NC4 lacks a coiled-coil probability. Prevention of the coiled-coil conformation in the NC3 domain is shown here to result in labile type XIII collagen molecules. Furthermore, a new subgroup of collagenous transmembrane proteins, the Rattus norvegicus, Drosophila melanogaster, and Caenorhabditis elegans colmedins, is enlarged to contain also Homo sapiens collomin, and Pan troglodytes, Mus musculus, Tetraodon nigroviridis, and Dano rerio proteins. We suggest that there is a structurally varied group of collagenous transmembrane proteins whose biosynthesis is characterized by a coiled-coil motif following the transmembrane domain, and that these trimerization domains appear to be associated with each of the collagenous domains. In the case of type XIII collagen, the trimeric molecule has disulfide bonds at the junction of the NC1 and COL1 domains, and the type XIII collagen-like molecules (collagen types XXIII and XXV) and the colmedins are similar in that they all have a pair of cysteines in the same location. Moreover, furin cleavage at the NC1 domain can be expected in most of the proteins.
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Affiliation(s)
- Anne Snellman
- Collagen Research Unit, Biocenter Oulu and Department of Medical Biochemistry and Molecular Biology, University of Oulu, PO Box 5000, FIN-90014 Oulu, Finland
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Maertens B, Hopkins D, Franzke CW, Keene DR, Bruckner-Tuderman L, Greenspan DS, Koch M. Cleavage and oligomerization of gliomedin, a transmembrane collagen required for node of ranvier formation. J Biol Chem 2007; 282:10647-59. [PMID: 17293346 DOI: 10.1074/jbc.m611339200] [Citation(s) in RCA: 75] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023] Open
Abstract
Gliomedin, which has been implicated as a major player in genesis of the nodes of Ranvier, contains two collagenous domains and an olfactomedin-like domain and belongs to the group of type II transmembrane collagens that includes collagens XIII and XVII and ectodysplasin A. One characteristic of this protein family is that constituent proteins can exist in both transmembrane and soluble forms. Recently, gliomedin expressed at the tips of Schwann cell microvilli was found to bind axonal adhesion molecules neurofascin and NrCAM in interactions essential for Na(+)-channel clustering at the nodes of Ranvier in myelinating peripheral nerves. Interestingly, exogenously added olfactomedin domain was found to have the same effect as intact gliomedin. Here we analyze the tissue form of gliomedin and demonstrate that the molecule not only exists as full-length gliomedin but also as a soluble form shed from the cell surface in a furin-dependent manner. In addition, gliomedin can be further proteolytically processed by bone morphogenetic protein 1/Tolloid-like enzymes, resulting in release of the olfactomedin domain from the collagen domains. Interestingly, the later cleavage induces formation of higher order, insoluble molecular aggregates that may play important roles in Na(+)-channel clustering.
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Affiliation(s)
- Barbara Maertens
- Center for Biochemistry, Medical Faculty, University of Cologne, D-50931 Cologne, Germany
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Van den Bergh F, Fu CL, Olague-Marchan M, Giudice GJ. The NC16A domain of collagen XVII plays a role in triple helix assembly and stability. Biochem Biophys Res Commun 2006; 350:1032-7. [PMID: 17045967 PMCID: PMC1847801 DOI: 10.1016/j.bbrc.2006.09.147] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2006] [Accepted: 09/28/2006] [Indexed: 11/30/2022]
Abstract
Collagen XVII/BP180 is a transmembrane constituent of the epidermal anchoring complex. To study the role of its non-collagenous linker domain, NC16A, in protein assembly and stability, we analyzed the following recombinant proteins: the collagen XVII extracellular domain with or without NC16A, and a pair of truncated proteins comprising the COL15-NC15 stretch expressed with or without NC16A. All four proteins were found to exist as stable collagen triple helices; however, the two missing NC16A exhibited melting temperatures significantly lower than their NC16A-containing counterparts. Protein refolding experiments revealed that the rate of triple helix assembly of the collagen model peptide GPP(10) is greatly increased by the addition of an upstream NC16A domain. In summary, the NC16A linker domain of collagen XVII exhibits a positive effect on both the rate of assembly and the stability of the adjoining collagen structure.
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Affiliation(s)
- Françoise Van den Bergh
- Department of Dermatology, Medical College of Wisconsin, 8701 Watertown Plank Road, Milwaukee, WI 53226, USA.
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Khoshnoodi J, Cartailler JP, Alvares K, Veis A, Hudson BG. Molecular recognition in the assembly of collagens: terminal noncollagenous domains are key recognition modules in the formation of triple helical protomers. J Biol Chem 2006; 281:38117-21. [PMID: 17082192 DOI: 10.1074/jbc.r600025200] [Citation(s) in RCA: 140] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
The alpha-chains of the collagen superfamily are encoded with information that specifies self-assembly into fibrils, microfibrils, and networks that have diverse functions in the extracellular matrix. A key self-organizing step, common to all collagen types, is trimerization that selects, binds, and registers cognate alpha-chains for assembly of triple helical protomers that subsequently oligomerize into specific suprastructures. In this article, we review recent findings on the mechanism of chain selection and infer that terminal noncollagenous domains function as recognition modules in trimerization and are therefore key determinants of specificity in the assembly of suprastructures. This mechanism is also illustrated with computer-generated animations.
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Affiliation(s)
- Jamshid Khoshnoodi
- Department of Medicine, Vanderbilt University Medical Center, Nashville, TN 37232-2372, USA
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Väisänen T, Väisänen MR, Pihlajaniemi T. Modulation of the cellular cholesterol level affects shedding of the type XIII collagen ectodomain. J Biol Chem 2006; 281:33352-62. [PMID: 16950783 DOI: 10.1074/jbc.m605896200] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Type XIII collagen is a transmembrane protein that also exists as a soluble extracellular variant because of ectodomain shedding by proprotein convertases. Because ectodomain shedding in a growing number of transmembrane proteins has recently been shown to be dependent on their localization in cholesterol-enriched detergent-resistant membrane microdomains, this work aimed at analyzing this aspect of type XIII collagen ectodomain processing. In HT-1080 cells type XIII collagen and its cleaving proprotein convertase furin localized partially in detergent-resistant cholesterol-containing membrane microdomains. Disruption of these domains by lowering either the level or availability of the cellular cholesterol reduced ectodomain shedding, implying that, in such membrane domains correct cholesterol level is important for the regulation of type XIII collagen ectodomain processing. In addition, we show here that ectodomain of type XIII collagen is also shed intracellularly. HT-1080 cells released vesicles from the Golgi apparatus, which contained only the cleaved variant. Intracellular processing and the subsequent entry of the cleaved ectodomain into the vesicles was totally blocked by inhibition of the proprotein convertase function by cell-permeable chloromethylketone, but not with cell-impermeable alpha1-antitrypsin Portland. This supports the hypothesis of type XIII collagen ectodomain also being cleaved intracellularly in the Golgi and suggests that the intracellular cleavage may act as a gating event in the vesicle-mediated ectodomain secretion.
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Affiliation(s)
- Timo Väisänen
- Collagen Research Unit, Department of Medical Biochemistry and Molecular Biology, University of Oulu, Finland
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Määttä M, Väisänen T, Väisänen MR, Pihlajaniemi T, Tervo T. Altered expression of type XIII collagen in keratoconus and scarred human cornea: Increased expression in scarred cornea is associated with myofibroblast transformation. Cornea 2006; 25:448-53. [PMID: 16670484 DOI: 10.1097/01.ico.0000183537.45393.1f] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
PURPOSE Type XIII collagen (ColXIII) is a transmembrane protein thought to be involved in cell-cell and cell-matrix interactions. We report here on its presence in the normal human cornea and compare the results for keratoconus and scarred corneas. METHODS Immunohistochemistry and in situ hybridization were applied to human corneal samples obtained by penetrating keratoplasty. RESULTS In the normal human cornea, ColXIII was immunolocalized to the corneal epithelial cells, and to a lesser degree to the stromal keratocytes. The keratoconus cases showed otherwise similar results, but in areas containing Bowman membrane disruptions showed thinned epithelial cells reduced immunostaining for ColXIII, whereas occasionally pronounced immunoreactivity was seen in the stromal keratocytes. The corneal scar samples contained highly increased ColXIII immunostaining by stromal cells in the fibrotic foci, whereas the peripheral areas showed less intense immunostaining. In situ hybridization confirmed that the corneal epithelium and keratocytes actively synthesize the transcript. Immunostaining with alphaSMA revealed that a substantial proportion of the ColXIII mRNA-expressing cells in the stromal scar tissues was myofibroblasts and that these areas lack CD34 immunoreactivity. CONCLUSIONS The results indicate that ColXIII, which is predominantly confined to the basal corneal cells in the normal cornea, may have a role in the adhesion of corneal epithelial cells to each other and to the underlying basement membrane. Additionally, highly increased expression in scarred corneas suggests that it participates in the corneal wound healing process.
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Affiliation(s)
- Marko Määttä
- Department of Ophthalmology, Helsinki University Central Hospital, Helsinki, Finland.
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Väisänen MR, Väisänen T, Tu H, Pirilä P, Sormunen R, Pihlajaniemi T. The shed ectodomain of type XIII collagen associates with the fibrillar fibronectin matrix and may interfere with its assembly in vitro. Biochem J 2006; 393:43-50. [PMID: 16091016 PMCID: PMC1383662 DOI: 10.1042/bj20051073] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Type XIII collagen is a transmembrane collagen, which is known to exist also as a soluble variant due to ectodomain shedding. Earlier studies with the recombinant ectodomain have shown it to interact in vitro with a number of extracellular matrix proteins, e.g. Fn (fibronectin). In view of its strong binding to Fn, we examined in the present study whether the released soluble ectodomain can bind to the fibrillar Fn matrix under cell-culture conditions and, if so, influence its assembly. In this study, we demonstrate that the type XIII collagen ectodomain of mammalian cells can associate with Fn fibres and may eventually hamper incorporation of the fibrillar Fn meshwork. The association between type XIII collagen and Fn was implicated to be mediated by the C-terminal end of type XIII collagen and the N-terminal end of Fn. The results presented here imply that the shedding of the type XIII collagen ectodomain results in a biologically active molecule capable of remodelling the structure of the pericellular matrix.
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Affiliation(s)
- Marja-Riitta Väisänen
- *Collagen Research Unit, Biocenter Oulu and Department of Medical Biochemistry and Molecular Biology, University of Oulu, P.O. Box 5000, 90014 University of Oulu, Finland
| | - Timo Väisänen
- *Collagen Research Unit, Biocenter Oulu and Department of Medical Biochemistry and Molecular Biology, University of Oulu, P.O. Box 5000, 90014 University of Oulu, Finland
| | - Hongmin Tu
- *Collagen Research Unit, Biocenter Oulu and Department of Medical Biochemistry and Molecular Biology, University of Oulu, P.O. Box 5000, 90014 University of Oulu, Finland
| | - Päivi Pirilä
- †Biocenter Oulu and Department of Chemistry, University of Oulu, P.O. Box 3000, 90014 University of Oulu, Finland
| | - Raija Sormunen
- ‡Biocenter Oulu and Department of Pathology, University of Oulu, P.O. Box 5000, 90014 University of Oulu, Finland
| | - Taina Pihlajaniemi
- *Collagen Research Unit, Biocenter Oulu and Department of Medical Biochemistry and Molecular Biology, University of Oulu, P.O. Box 5000, 90014 University of Oulu, Finland
- To whom correspondence should be addressed (email )
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Ylönen R, Kyrönlahti T, Sund M, Ilves M, Lehenkari P, Tuukkanen J, Pihlajaniemi T. Type XIII collagen strongly affects bone formation in transgenic mice. J Bone Miner Res 2005; 20:1381-93. [PMID: 16007336 DOI: 10.1359/jbmr.050319] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/28/2004] [Revised: 02/02/2005] [Accepted: 03/16/2005] [Indexed: 01/11/2023]
Abstract
UNLABELLED To characterize the function of type XIII collagen, a transmembrane protein occurring at cell adhesion sites, we generated transgenic mice overexpressing it. High transgene expression was detected in cartilage and bone. The overexpression mice developed an unexpected skeletal phenotype marked by a massive increase in bone mass caused by increased bone formation rather than impaired resorption. INTRODUCTION Type XIII collagen is a type II transmembrane protein that is expressed in many tissues throughout development and adult life. It is located in focal adhesions of cultured fibroblasts and other cells and in the adhesive structures of tissues. To further characterize the function of this protein, we generated transgenic mice overexpressing it. High transgene expression was detected in cartilage and bone in locations also containing the endogenous protein. MATERIALS AND METHODS Col13a1 5'-flanking sequences were tested for their efficiencies to drive gene expression. Skeletal tissues of transgenic mice and wildtype littermates were compared using histological, immunohistochemical, and bone histomorphometrical analyses. Bone formation rate was measured by tetracycline double-labeling. Osteoclast number and resorption activity were determined using standard methods. RNA samples from transgenic and wildtype femurs were analyzed by Northern blotting and quantitative RT-PCR. RESULTS There was no defect in early skeletal development, but the high bone mass phenotype became apparent in heterozygous mice at the age of 3-4 weeks. The changes were most noticeable in proximal long bones but were also detectable in calvarial bones. The cortical bone cross-sectional area and the volumetric BMD were highly increased, but the bone marrow was well formed. Histological and histomorphometric analysis showed that trabecular bone volume was not significantly altered. Because of the normal epiphyseal growth plates, the longitudinal growth was not affected. Bone formation rate was several times higher in the overexpression mice than in their normal littermates, whereas the osteoclast number and resorption activity were normal. RNA analysis revealed increased expression in the transcription factor Runx2 and IGF-II, both known to be involved in bone biology. CONCLUSION Overexpression of type XIII collagen in skeletal tissues leads postnatally to an abnormally high bone mass caused by increased bone formation rather than impaired resorption. The findings suggest that type XIII collagen has an important role in bone modeling, and in particular, it may have a function in coupling the regulation of bone mass to mechanical use.
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Affiliation(s)
- Riikka Ylönen
- Collagen Research Unit, Biocenter Oulu, Department of Medical Biochemistry and Molecular Biology, University of Oulu, Oulu, Finland
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Ricard-Blum S, Ruggiero F. The collagen superfamily: from the extracellular matrix to the cell membrane. ACTA ACUST UNITED AC 2005; 53:430-42. [PMID: 16085121 DOI: 10.1016/j.patbio.2004.12.024] [Citation(s) in RCA: 209] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2004] [Accepted: 12/10/2004] [Indexed: 12/17/2022]
Abstract
The collagen superfamily is highly complex and shows a remarkable diversity in molecular and supramolecular organization, tissue distribution and function. However, all its members share a common structural feature, the presence of at least one triple-helical domain, which corresponds to a number of (Gly-X-Y)n repeats (X being frequently proline and Y hydroxyproline) in the amino acid sequence. Several sub-families have been determined according to sequence homologies and to similarities in the structural organization and supramolecular assembly. In the present review, we focus on the newly described fibrillar collagens, fibrillar-associated collagens with interrupted triple helix, membrane collagens and multiplexins. Recent advances in the characterization of proteins containing triple-helical domains but not referred to as collagens are also discussed.
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Affiliation(s)
- Sylvie Ricard-Blum
- Institut de Biologie et Chimie des Protéines, UMR 5086 CNRS UCBL, IFR128 Biosciences Gerland, Lyon, France.
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De Bellis A, Sansone D, Coronella C, Conte M, Iorio S, Perrino S, Battaglia M, Bellastella G, Wall JR, Bellastella A, Bizzarro A. Serum antibodies to collagen XIII: a further good marker of active Graves' ophthalmopathy. Clin Endocrinol (Oxf) 2005; 62:24-9. [PMID: 15638866 DOI: 10.1111/j.1365-2265.2004.02167.x] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
OBJECTIVE In Graves' ophthalmopathy (GO) intercellular adhesion molecule-1 (ICAM-1) is thought to play a key role in lymphocyte infiltration into the orbit, and serum levels of its soluble form are positively correlated to clinical activity score (CAS). Serum antibodies against collagen XIII (CollXIIIAb), a plasma membrane protein expressed at a low level in almost all connective tissue-producing cells, have been detected in GO, but their significance is unclear. The aim of this study was to search for CollXIIIAb in Graves' patients with and without ophthalmopathy and to correlate their levels with CAS and with serum soluble ICAM-1 (sICAM-1) values. PATIENTS We studied 66 patients with Graves' disease whose sera had been previously tested for sICAM-1 levels, grouped as follows: 28 with moderate and active ophthalmopathy (group 1), 12 of them hyperthyroid (group 1a) and 16 euthyroid (group 1b); 13 with mild and inactive ophthalmopathy and normal thyroid function (group 2); 25 without ophthalmopathy (group 3), 11 of them hyperthyroid (group 3a) and 14 euthyroid (group 3b). Finally, 26 sera of normal controls were studied. MEASUREMENTS CollXIIIAb were evaluated by an enzyme-linked immunosorbent assay (ELISA) method. RESULTS In group 1 patients, CollXIIIAb were detected at high levels in 8/12 (66.6%) in group 1a [optical density (OD) ranging from 0.529 to 0.894] and in 10/16 (62.5%) in group 1b (OD 0.560-0.855). In group 2 patients, CollXIIIAb were detected but at low levels (OD 0.205-0.260) in 4/13 patients (30.7%). In group 3 patients, CollXIIIAb were present at low levels in 6/11 (54.5%) of group 3a and in 5/14 (35.7%) of group 3b (OD 0.215-0.290 and 0.144-0.245, respectively). CollXIIIAb were detected in only 4/26 normal controls (15%) but at low levels (OD 0.150-0.185). CollXIIIAb values in both groups 1a and 1b were significantly higher than those of the remaining groups. A positive correlation between CollXIIIAb levels and CAS but not thyroid hormone levels was found in groups 1a, 1b and 2. Moreover, a positive correlation between CollXIIIAb levels and sICAM-1-values was also evidenced in all three groups. CONCLUSIONS Our results suggest that CollXIIIAb could be considered as a further good marker of active inflammatory processes involving the adipose connective tissue in GO. In particular, the high levels of CollXIIIAb in sera of Graves' patients with active ophthalmopathy could reflect an increased expression of type XIII collagen on the membrane of activated fibroblasts in these patients. Thus, the evaluation of these antibodies could be added to other known markers as a useful and inexpensive tool in monitoring Graves' patients and in modulating the treatment of GO.
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Affiliation(s)
- A De Bellis
- Department of Clinical and Experimental Medicine and Surgery F. Magrassi and A. Lanzara, Second University of Naples, Italy.
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Väisänen T, Väisänen MR, Autio-Harmainen H, Pihlajaniemi T. Type XIII collagen expression is induced during malignant transformation in various epithelial and mesenchymal tumours. J Pathol 2005; 207:324-35. [PMID: 16110459 DOI: 10.1002/path.1836] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Little information is available on the expression of transmembrane type XIII collagen in human diseases. The present study has investigated the expression of this collagen in cancer, in particular during malignant transformation. By combining the tissue microarray technique with in situ hybridization, a consistent pattern of clearly increased type XIII collagen mRNA expression was found in the stromal compartment of epithelial tumours and throughout mesenchymal tumours. Slightly elevated mRNA expression was observed in dysplastic samples and in malignant epithelial cells. It is also demonstrated that factors secreted into the culture medium by tumour cells, in particular the growth factor TGF-beta, contribute to the induction of type XIII collagen expression, and trigger concomitantly a profound phenotypic and morphological transition of cultured primary fibroblasts. Reciprocally, type XIII collagen may alter the growth milieu of malignant cells as the soluble type XIII collagen ectodomain influenced the adherence and spreading of cells cultured on vitronectin-rich matrix. It is proposed that malignant transformation stimulates the expression of type XIII collagen, particularly in the tumour stroma and to a lesser extent in the epithelium, and that this high type XIII collagen expression may contribute to tumour progression and behaviour by modulating cell-matrix interactions.
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Affiliation(s)
- Timo Väisänen
- Collagen Research Unit, Biocenter Oulu and Department of Medical Biochemistry and Molecular Biology, University of Oulu, PO Box 5000, 90014 University of Oulu, Finland
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Kefalides NA, Borel JP. Minor Proteins of Basement Membranes, Minor Collagens of the Basement Membrane Zone. Basement Membranes: Cell and Molecular Biology 2005. [DOI: 10.1016/s1063-5823(05)56007-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Väisänen MR, Väisänen T, Pihlajaniemi T. The shed ectodomain of type XIII collagen affects cell behaviour in a matrix-dependent manner. Biochem J 2004; 380:685-93. [PMID: 15005656 PMCID: PMC1224210 DOI: 10.1042/bj20031974] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2003] [Revised: 02/26/2004] [Accepted: 03/09/2004] [Indexed: 11/17/2022]
Abstract
Transmembrane type XIII collagen resides in adhesive structures of cells and tissues, and has therefore been implicated in cell adhesion and in adhesion-dependent cell functions. This collagen also exists as a soluble protein in the pericellular matrix, as the ectodomain is released from the plasma membrane by proteolytic cleavage. Analysis with various protease inhibitors led to confirmation of the furin family of proprotein convertases as the protease group responsible for the shedding of the ectodomain, cleaving at a site conforming to the consensus sequence for the proprotein convertases at the stem of the ectodomain. Both the trans -Golgi network and the plasma membrane were used as cleavage locations. Mammalian cells employed various intracellular mechanisms to modulate shedding of the ectodomain, all resulting in a similar cleavage event. Cell detachment from the underlying substratum was also found to augment the excision. The released ectodomain rendered the pericellular surroundings less supportive of cell adhesion, migration and proliferation, as seen specifically on a vitronectin substratum. Type XIII collagen ectodomain shedding thus resulted in the formation of a soluble, biologically active molecule, which eventually modulated cell behaviour in a reciprocal and substratum-specific manner. The dual existence of membrane-bound and soluble variants widens our biological understanding of type XIII collagen.
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Affiliation(s)
- Marja-Riitta Väisänen
- Collagen Research Unit, Biocenter Oulu and Department of Medical Biochemistry and Molecular Biology, University of Oulu, P.O. Box 5000, 90014 Oulu, Finland
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Söderberg L, Kakuyama H, Möller A, Ito A, Winblad B, Tjernberg LO, Näslund J. Characterization of the Alzheimer's disease-associated CLAC protein and identification of an amyloid beta-peptide-binding site. J Biol Chem 2004; 280:1007-15. [PMID: 15522881 DOI: 10.1074/jbc.m403628200] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Amyloid beta-peptide (Abeta) deposition into amyloid plaques is one of the invariant neuropathological features of Alzheimer's disease. Other proteins co-deposit with Abeta in plaques, and one recently identified amyloid-associated protein is the collagen-like Alzheimer amyloid plaque component CLAC. It is not known how CLAC deposition affects Abeta plaque genesis and the progress of the disease. Here, we studied the in vitro properties of CLAC purified from a mammalian expression system. CLAC displays features characteristic of a collagen protein, e.g. it forms a partly protease-resistant triple-helical structure, exhibits an intermediate affinity for heparin, and is glycosylated. Purified CLAC was also used to investigate the interaction between CLAC and Abeta. Using a solid-phase binding assay, we show that CLAC bound with a similar affinity to aggregates formed by Abeta-(1-40) and Abeta-(1-42) and that the interaction was impaired by increasing salt concentrations. An 8-residue-long sequence located in non-collagenous domain 2 of CLAC was found to be crucial for the interaction with Abeta. These findings may be useful for future therapeutic interventions aimed at finding compounds that modulate the binding of CLAC to Abeta deposits.
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Affiliation(s)
- Linda Söderberg
- Karolinska Institutet and Sumitomo Pharmaceuticals Alzheimer Center, Neurotec, Novum, SE-141 57 Huddinge, Sweden.
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Buevich AV, Silva T, Brodsky B, Baum J. Transformation of the mechanism of triple-helix peptide folding in the absence of a C-terminal nucleation domain and its implications for mutations in collagen disorders. J Biol Chem 2004; 279:46890-5. [PMID: 15299012 DOI: 10.1074/jbc.m407061200] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Folding abnormalities of the triple helix have been demonstrated in collagen diseases such as osteogenesis imperfecta in which the mutation leads to the substitution of a single Gly in the (Gly-X-Y)n sequence pattern by a larger residue. Model peptides can be used to clarify the details of normal collagen folding and the consequences of the interruption of that folding by a Gly substitution. NMR and CD studies show that placement of a (GPO)4 nucleation domain at the N terminus rather than the C terminus of a native collagen sequence allows the formation of a stable triple helix but alters the folding mechanism. Although C- to N-terminal directional folding occurs when the nucleation domain is at the C terminus, there is no preferential folding direction when the nucleation domain is at the N terminus. The lack of zipper-like directional folding does not interfere with triple-helix formation, and when a Gly residue is replaced by Ser to model an osteogenesis imperfecta mutation, the peptide with the N-terminal (GPO)4 domain can still form a good triple helix N-terminal to the mutation site. These peptide studies raise the possibility that mutant collagen could fold in a C to N direction in a zipper-like manner up to the mutation site and that completion of the triple helix N-terminal to the mutation would involve an alternative mechanism.
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Affiliation(s)
- Alexei V Buevich
- Department of Chemistry and Chemical Biology, Rutgers University, Piscataway, New Jersey 08854, USA
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Abstract
The conversion of proteins into their mature forms underlies the functionality of many fundamental cellular pathways. One posttranslational modification leading to maturation of precursor proteins consists of the cleavage of their prodomain at pairs of basic amino acids by enzymes of the subtilisin-like mammalian proprotein convertase family. One of these enzymes, furin, acts in the constitutive secretory pathway of almost every cell type. However, in spite of furin's major roles in many pathophysiological processes, the exact subcellular sites of processing and activation of its substrates remain elusive. In this study, furin antigenic sites were tracked in subcellular compartments of various tissues and corresponding cell lines by high-resolution immunogold electron microscopy, Western blotting, cell transfection, and in vivo gene delivery of the furin cDNA. In addition to the Golgi apparatus, furin was assigned to endosomes and plasma membranes of polarized intestinal and renal epithelial cells and endothelial cells of the continuous, fenestrated, and discontinuous capillaries. Roles of furin in endothelial permeability, basement membrane turnover, and shedding of transmembrane proteins are supported by our data.
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Affiliation(s)
- Gaétan Mayer
- Département de Pathologie et Biologie Cellulaire, Université de Montréal, Montréal, Québec, Canada
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48
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Franzke CW, Tasanen K, Borradori L, Huotari V, Bruckner-Tuderman L. Shedding of collagen XVII/BP180: structural motifs influence cleavage from cell surface. J Biol Chem 2004; 279:24521-9. [PMID: 15047704 DOI: 10.1074/jbc.m308835200] [Citation(s) in RCA: 55] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Collagen XVII/BP180, an epithelial adhesion molecule, belongs to the group of collagenous transmembrane proteins, which are characterized by ectodomain shedding. We recently showed that ADAMs can cleave collagen XVII, but also that furin participates in this process (Franzke, C. W., Tasanen, K., Schäcke, H., Zhou, Z., Tryggvason, K., Mauch, C., Zigrino, P., Sunnarborg, S., Lee, D. C., Fahrenholz, F., and Bruckner-Tuderman, L. (2002) EMBO J. 21, 5026-5035). To define the cleavage region in the juxtamembranous NC16A linker domain and assess its structure and requirements for shedding, we constructed deletion mutants of the NC16A domain, expressed them in COS-7 cells, and analyzed their structural integrity and shedding behavior. A mutant lacking the furin consensus sequence was shed in a normal manner, demonstrating that furin does not cleave collagen XVII but rather activates ADAMs (a disintegrin and metalloproteinase). Large deletions of the NC16A domain prevented shedding, and analysis of defined smaller deletions pointed to the stretch of amino acid residues 528-547 as important for sheddase recognition and cleavage. Secondary protein structure predictions showed that deletion of this stretch resulted in an NC16A domain with a positive net charge and an amphipathic alpha-helix, which can cause conformational changes in the collagen XVII homotrimer. Assessment of triple-helix folding of the mutants revealed a lower thermal stability of all non-shed variants than of wild-type collagen XVII or the shed mutants. In contrast, deletion of the putative nucleation site for triple-helix folding of collagenous transmembrane proteins did not affect folding of collagen XVII. The data indicate that the conformation of the NC16A domain and steric availability of the cleavage site influence shedding and is important for folding of collagen XVII.
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Affiliation(s)
- Claus-Werner Franzke
- Department of Dermatology, University of Freiburg, Hauptstrasse 7, 79106 Freiburg, Germany
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Abstract
In the skin, basal epithelial cells constantly divide to renew the epidermis. The newly formed epithelial cells then differentiate in a process called keratinization, ultimately leading to the death of these cells and a pile-up of cell material containing vast amounts of keratins. The basal keratinocytes in skin are attached to their underlying basement membrane via specialized adhesion complexes termed hemidesmosomes (HDs). These complexes ascertain stable adhesion of the epidermis to the dermis, and mutations in components of these complexes often result in tissue fragility and blistering of the skin. In this review, we will describe the various hemidesmosomal proteins in detail as well as, briefly, the protein families to which they belong. Specifically, we will report the protein-protein interactions involved in the assembly of hemidesmosomes and their molecular organization. Some signaling pathways involving primarily the alpha6beta4 integrin will be discussed, since they appear to profoundly modulate the assembly and function of hemidesmosomes. Furthermore, the importance of these hemidesmosomal components for the maintenance of tissue homeostasis and their involvement in various clinical disorders will be emphasized. Finally, we will present a model for the assembly of HDs, based on our present knowledge.
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Affiliation(s)
- J Koster
- Division of Cell Biology, The Netherlands Cancer Institute, Plesmanlaan 121, 1066 CX, Amsterdam, The Netherlands
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McAlinden A, Smith TA, Sandell LJ, Ficheux D, Parry DAD, Hulmes DJS. Alpha-helical coiled-coil oligomerization domains are almost ubiquitous in the collagen superfamily. J Biol Chem 2003; 278:42200-7. [PMID: 12920133 DOI: 10.1074/jbc.m302429200] [Citation(s) in RCA: 61] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Alpha-helical coiled-coils are widely occurring protein oligomerization motifs. Here we show that most members of the collagen superfamily contain short, repeating heptad sequences typical of coiled coils. Such sequences are found at the N-terminal ends of the C-propeptide domains in all fibrillar procollagens. When fused C-terminal to a reporter molecule containing a collagen-like sequence that does not spontaneously trimerize, the C-propeptide heptad repeats induced trimerization. C-terminal heptad repeats were also found in the oligomerization domains of the multiplexins (collagens XV and XVIII). N-terminal heptad repeats are known to drive trimerization in transmembrane collagens, whereas fibril-associated collagens with interrupted triple helices, as well as collagens VII, XIII, XXIII, and XXV, were found to contain heptad repeats between collagen domains. Finally, heptad repeats were found in the von Willebrand factor A domains known to be involved in trimerization of collagen VI, as well as in collagen VII. These observations suggest that coiled-coil oligomerization domains are widely used in the assembly of collagens and collagen-like proteins.
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Affiliation(s)
- Audrey McAlinden
- Department of Orthopedic Surgery, Washington University School of Medicine, Barnes-Jewish Hospital, St. Louis, MO 63110, USA
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