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Li P, Fleischhauer L, Nicolae C, Prein C, Farkas Z, Saller MM, Prall WC, Wagener R, Heilig J, Niehoff A, Clausen-Schaumann H, Alberton P, Aszodi A. Mice Lacking the Matrilin Family of Extracellular Matrix Proteins Develop Mild Skeletal Abnormalities and Are Susceptible to Age-Associated Osteoarthritis. Int J Mol Sci 2020; 21:ijms21020666. [PMID: 31963938 PMCID: PMC7013758 DOI: 10.3390/ijms21020666] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2019] [Revised: 01/10/2020] [Accepted: 01/15/2020] [Indexed: 12/14/2022] Open
Abstract
Matrilins (MATN1, MATN2, MATN3 and MATN4) are adaptor proteins of the cartilage extracellular matrix (ECM), which bridge the collagen II and proteoglycan networks. In humans, dominant-negative mutations in MATN3 lead to various forms of mild chondrodysplasias. However, single or double matrilin knockout mice generated previously in our laboratory do not show an overt skeletal phenotype, suggesting compensation among the matrilin family members. The aim of our study was to establish a mouse line, which lacks all four matrilins and analyze the consequence of matrilin deficiency on endochondral bone formation and cartilage function. Matn1-4−/− mice were viable and fertile, and showed a lumbosacral transition phenotype characterized by the sacralization of the sixth lumbar vertebra. The development of the appendicular skeleton, the structure of the growth plate, chondrocyte differentiation, proliferation, and survival were normal in mutant mice. Biochemical analysis of knee cartilage demonstrated moderate alterations in the extractability of the binding partners of matrilins in Matn1-4−/− mice. Atomic force microscopy (AFM) revealed comparable compressive stiffness but higher collagen fiber diameters in the growth plate cartilage of quadruple mutant compared to wild-type mice. Importantly, Matn1-4−/− mice developed more severe spontaneous osteoarthritis at the age of 18 months, which was accompanied by changes in the biomechanical properties of the articular cartilage. Interestingly, Matn4−/− mice also developed age-associated osteoarthritis suggesting a crucial role of MATN4 in maintaining the stability of the articular cartilage. Collectively, our data provide evidence that matrilins are important to protect articular cartilage from deterioration and are involved in the specification of the vertebral column.
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Affiliation(s)
- Ping Li
- Experimental Surgery and Regenerative Medicine (ExperiMed), Department of General, Trauma and Reconstructive Surgery, Munich University Hospital, Ludwig-Maximilians-University, 80336 Munich, Germany; (P.L.); (L.F.); (C.P.); (Z.F.); (M.M.S.); (W.C.P.); (P.A.)
| | - Lutz Fleischhauer
- Experimental Surgery and Regenerative Medicine (ExperiMed), Department of General, Trauma and Reconstructive Surgery, Munich University Hospital, Ludwig-Maximilians-University, 80336 Munich, Germany; (P.L.); (L.F.); (C.P.); (Z.F.); (M.M.S.); (W.C.P.); (P.A.)
- Center for Applied Tissue Engineering and Regenerative Medicine, Munich University of Applied Sciences, 80533 Munich, Germany;
- Center for NanoScience, Ludwig-Maximilians University Munich, 80799 Munich, Germany
| | - Claudia Nicolae
- Department of Molecular Medicine, Max Planck Institute for Biochemistry, 82152 Martinsried, Germany;
| | - Carina Prein
- Experimental Surgery and Regenerative Medicine (ExperiMed), Department of General, Trauma and Reconstructive Surgery, Munich University Hospital, Ludwig-Maximilians-University, 80336 Munich, Germany; (P.L.); (L.F.); (C.P.); (Z.F.); (M.M.S.); (W.C.P.); (P.A.)
- Center for Applied Tissue Engineering and Regenerative Medicine, Munich University of Applied Sciences, 80533 Munich, Germany;
| | - Zsuzsanna Farkas
- Experimental Surgery and Regenerative Medicine (ExperiMed), Department of General, Trauma and Reconstructive Surgery, Munich University Hospital, Ludwig-Maximilians-University, 80336 Munich, Germany; (P.L.); (L.F.); (C.P.); (Z.F.); (M.M.S.); (W.C.P.); (P.A.)
| | - Maximilian Michael Saller
- Experimental Surgery and Regenerative Medicine (ExperiMed), Department of General, Trauma and Reconstructive Surgery, Munich University Hospital, Ludwig-Maximilians-University, 80336 Munich, Germany; (P.L.); (L.F.); (C.P.); (Z.F.); (M.M.S.); (W.C.P.); (P.A.)
| | - Wolf Christian Prall
- Experimental Surgery and Regenerative Medicine (ExperiMed), Department of General, Trauma and Reconstructive Surgery, Munich University Hospital, Ludwig-Maximilians-University, 80336 Munich, Germany; (P.L.); (L.F.); (C.P.); (Z.F.); (M.M.S.); (W.C.P.); (P.A.)
| | - Raimund Wagener
- Center for Molecular Medicine, University of Cologne, 50923 Cologne, Germany;
- Center for Biochemistry, Faculty of Medicine, University of Cologne, 50931 Cologne, Germany;
| | - Juliane Heilig
- Center for Biochemistry, Faculty of Medicine, University of Cologne, 50931 Cologne, Germany;
- Cologne Center for Musculoskeletal Biomechanics, Faculty of Medicine and University Hospital of Cologne, 50931 Cologne, Germany;
| | - Anja Niehoff
- Cologne Center for Musculoskeletal Biomechanics, Faculty of Medicine and University Hospital of Cologne, 50931 Cologne, Germany;
- Institute of Biomechanics and Orthopaedics, German Sport University Cologne, 50933 Cologne, Germany
| | - Hauke Clausen-Schaumann
- Center for Applied Tissue Engineering and Regenerative Medicine, Munich University of Applied Sciences, 80533 Munich, Germany;
- Center for NanoScience, Ludwig-Maximilians University Munich, 80799 Munich, Germany
| | - Paolo Alberton
- Experimental Surgery and Regenerative Medicine (ExperiMed), Department of General, Trauma and Reconstructive Surgery, Munich University Hospital, Ludwig-Maximilians-University, 80336 Munich, Germany; (P.L.); (L.F.); (C.P.); (Z.F.); (M.M.S.); (W.C.P.); (P.A.)
| | - Attila Aszodi
- Experimental Surgery and Regenerative Medicine (ExperiMed), Department of General, Trauma and Reconstructive Surgery, Munich University Hospital, Ludwig-Maximilians-University, 80336 Munich, Germany; (P.L.); (L.F.); (C.P.); (Z.F.); (M.M.S.); (W.C.P.); (P.A.)
- Center for Applied Tissue Engineering and Regenerative Medicine, Munich University of Applied Sciences, 80533 Munich, Germany;
- Correspondence: ; Tel.: +49-89-4400-55481
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Firner S, Zaucke F, Michael J, Dargel J, Schiwy-Bochat KH, Heilig J, Rothschild MA, Eysel P, Brüggemann GP, Niehoff A. Extracellular Distribution of Collagen II and Perifibrillar Adapter Proteins in Healthy and Osteoarthritic Human Knee Joint Cartilage. J Histochem Cytochem 2017; 65:593-606. [PMID: 28846474 DOI: 10.1369/0022155417729154] [Citation(s) in RCA: 18] [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] [Indexed: 11/22/2022] Open
Abstract
Perifibrillar adapter proteins, interconnecting collagen fibrils, and linking the collagen network with the aggrecan matrix seem to play a crucial role in the pathogenesis of osteoarthritis (OA). Therefore, we examined immunohistochemically the extracellular distribution of collagen II and the main perifibrillar adapter proteins-collagen IX, decorin, cartilage oligomeric matrix protein (COMP), and matrilin-3-in human samples of healthy (n=4) and OA (n=42) knee joint cartilage. Histopathology assessment was performed using an OA score. Staining patterns were evaluated in relation to the disease stage. The perifibrillar adapter proteins were uniformly distributed in the upper zones of healthy cartilage. In moderate OA (n=8; score 14.3 ± 4.7), all proteins analyzed were locally absent in the fibrillated area or the superficial and upper mid zone. In advanced OA (n=20; score 18.9 ± 5.3), they were uniformly distributed in these zones and accumulated pericellularly. Perifibrillar adapter proteins are important for the stabilization of the collagen network in the upper zones of healthy cartilage. Their degradation might be a critical event in early OA. In advanced OA, there are indications for an increased synthesis in an attempt to regenerate the lost tissue and to protect the remaining cartilage from further destruction.
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Affiliation(s)
- Sara Firner
- Institute of Biomechanics and Orthopaedics, German Sport University Cologne, Cologne, Germany
| | - Frank Zaucke
- Dr. Rolf M. Schwiete Research Unit for Osteoarthritis, Orthopaedic University Hospital Friedrichsheim gGmbH, Frankfurt, Germany.,Cologne Center for Musculoskeletal Biomechanics (CCMB), Medical Faculty, University of Cologne, Cologne, Germany
| | - Joern Michael
- Department of Orthopaedic and Trauma Surgery, University Hospital Cologne, Cologne, Germany
| | - Jens Dargel
- Department of Orthopaedic and Trauma Surgery, University Hospital Cologne, Cologne, Germany
| | | | - Juliane Heilig
- Cologne Center for Musculoskeletal Biomechanics (CCMB), Medical Faculty, University of Cologne, Cologne, Germany
| | | | - Peer Eysel
- Department of Orthopaedic and Trauma Surgery, University Hospital Cologne, Cologne, Germany.,Cologne Center for Musculoskeletal Biomechanics (CCMB), Medical Faculty, University of Cologne, Cologne, Germany
| | - Gert-Peter Brüggemann
- Institute of Biomechanics and Orthopaedics, German Sport University Cologne, Cologne, Germany.,Cologne Center for Musculoskeletal Biomechanics (CCMB), Medical Faculty, University of Cologne, Cologne, Germany
| | - Anja Niehoff
- Institute of Biomechanics and Orthopaedics, German Sport University Cologne, Cologne, Germany.,Cologne Center for Musculoskeletal Biomechanics (CCMB), Medical Faculty, University of Cologne, Cologne, Germany
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Ruthard J, Kamper M, Renno JH, Kühn G, Hillebrand U, Höllriegl S, Johannis W, Zaucke F, Klatt AR. COMP does not directly modify the expression of genes involved in cartilage homeostasis in contrast to several other cartilage matrix proteins. Connect Tissue Res 2014; 55:348-56. [PMID: 25111190 DOI: 10.3109/03008207.2014.951440] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
OBJECTIVE We investigated whether COMP may modify cartilage metabolism and play a role as an endogenous disease aggravating factor in OA. MATERIALS AND METHODS Full-length and momomeric COMP was recombinantly expressed in human embryonic kidney cells and purified it via affinity chromatography. Purified COMP was used to stimulate either primary human chondrocytes or cartilage explants. Changes in the expression profiles of inflammatory genes, differentiation markers and growth factors were examined by immunoassay and by quantitative real-time reverse-transcription polymerase chain reaction. RESULTS Incubation of primary human chondrocytes or cartilage explants in the presence of COMP did not induce statistically significant changes in the expression of IL-6, MMP1, MMP13, collagen I, collagen II, collagen X, TGF-β1 and BMP-2. CONCLUSIONS In contrast to collagen II and matrilin-3, COMP lacks the ability to trigger a proinflammatory response in chondrocytes, although it carries an RGD motif and can bind to integrins. COMP is a well-accepted biomarker for osteoarthritis but increased COMP levels do not necessarily correlate with inflammation.
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Affiliation(s)
- Johannes Ruthard
- Institute for Clinical Chemistry, University of Cologne , Cologne , Germany
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Pei M, Luo J, Chen Q. Enhancing and maintaining chondrogenesis of synovial fibroblasts by cartilage extracellular matrix protein matrilins. Osteoarthritis Cartilage 2008; 16:1110-7. [PMID: 18282772 PMCID: PMC2596998 DOI: 10.1016/j.joca.2007.12.011] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/01/2007] [Accepted: 12/22/2007] [Indexed: 02/02/2023]
Abstract
OBJECTIVE Cartilage-specific extracellular matrix (ECM) proteins have been proposed to play key roles in modulating cellular phenotypes during chondrogenesis of mesenchymal stem cells. Matrilin (MATN)1 and MATN3 are among the most up-regulated ECM proteins during chondrogenesis. The aim of this study was to analyze their roles in chondrogenesis of mesenchymal fibroblasts from synovium. METHODS Primary synovial fibroblasts (SFBs) were purified from porcine synovium and incubated in pellet culture for 18 days. Chondrogenesis of SFB was analyzed by histological staining with safranin-O/fast green, and by quantifying glycosaminoglycans (GAG) with dimethylmethylene blue assay. The mRNA levels of chondrogenic markers including collagen II, aggrecan, and Sox 9 were quantified by real-time reverse transcription polymerase chain reaction, while the protein levels of Col II and MATNs were determined by western blot analysis. RESULTS SFBs underwent chondrogenesis after incubation with transforming growth factor-beta1 (TGF-beta1) for 3 days; however, this process was attenuated during the subsequent incubation period. Expression of a Matn1 or Matn3 cDNA maintained and further enhanced chondrogenesis of SFBs as shown by increased cartilaginous matrix areas, elevated amount of GAG, and stimulated expression of chondrogenic markers. CONCLUSION Our findings suggest a novel function for MATN1 and MATN3 to maintain and enhance chondrogenesis of mesenchymal fibroblasts initiated by TGF-beta. Our results also support a critical role of cartilage-specific ECM proteins to modulate cellular phenotypes in the microenvironment during chondrogenic differentiation.
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Affiliation(s)
- Ming Pei
- Tissue Engineering Laboratory, Department of Orthopaedics, West Virginia University, Morgantown, WV 26506, USA
| | - Junming Luo
- Cell and Molecular Biology Laboratories, Department of Orthopaedics, Rhode Island Hospital and The Warren Albert Medical School of Brown University, Providence, RI 02903, USA
| | - Qian Chen
- Cell and Molecular Biology Laboratories, Department of Orthopaedics, Rhode Island Hospital and The Warren Albert Medical School of Brown University, Providence, RI 02903, USA,Corresponding Author: Qian Chen, Ph.D., 1 Hoppin Street, Suite 402A, Providence, RI 02903, Tel: 401-444-5676; Fax: 401-444-5872; E-mail:
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