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Cai H, Zheng Y, Chen Y, Lu Q, Hong W, Guo Q, Zheng S. Miao medicine Gu Yan Xiao tincture inhibits mTOR to stimulate chondrocyte autophagy in a rabbit model of osteoarthritis. JOURNAL OF ETHNOPHARMACOLOGY 2024; 328:118095. [PMID: 38548121 DOI: 10.1016/j.jep.2024.118095] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/25/2023] [Revised: 03/10/2024] [Accepted: 03/21/2024] [Indexed: 04/01/2024]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE The Gu Yan Xiao tincture, a blend of traditional Chinese herbs, is traditionally used for osteoarthritis and related pain. This study investigated its mechanism of action in order to rationalize and validate its therapeutic use. AIM OF THE STUDY This study analyzed, in a rabbit model of knee osteoarthritis, whether and how Gu Yan Xiao tincture exerts therapeutic benefits by modulating chondrocyte autophagy. MATERIALS AND METHODS The active constituents within the GYX tincture were identified using liquid chromatography-mass spectrometry. The rabbit model was established by injecting animals with type II collagenase intra-articularly, and the effects of topically applied tincture were examined on osteoarthritis lesions of the knee using histopathology, micro-computed tomography and x-ray imaging. Effects of the tincture were also evaluated on levels of inflammatory cytokines, matrix metalloproteases, and autophagy in chondrocytes. As a positive control, animals were treated with sodium diclofenac. RESULTS The tincture mitigated the reduction in joint space, hyperplasia of the synovium and matrix metalloproteases in serum that occurred after injection of type II collagenase in rabbits. These therapeutic effects were associated with inhibition of mTOR and activation of autophagy in articular chondrocytes. Inhibiting mTOR with rapamycin potentiated the therapeutic effects of the tincture, while inhibiting autophagy with 3-methyladenine antagonized them. CONCLUSIONS Gu Yan Xiao tincture mitigates tissue injury in a rabbit model of osteoarthritis, at least in part by inhibiting mTOR and thereby promoting autophagy in chondrocytes. These results rationalize the use of the tincture not only against osteoarthritis but also potentially other diseases involving inhibition of autophagy in bones and joints.
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Affiliation(s)
- He Cai
- School of Basic Medicine, Guizhou University of Traditional Chinese Medicine, Guiyang, 550025, China.
| | - Yuhao Zheng
- School of Basic Medicine, Guizhou University of Traditional Chinese Medicine, Guiyang, 550025, China.
| | - Yinying Chen
- School of Basic Medicine, Guizhou University of Traditional Chinese Medicine, Guiyang, 550025, China.
| | - Qing Lu
- School of Basic Medicine, Guizhou University of Traditional Chinese Medicine, Guiyang, 550025, China.
| | - Wu Hong
- School of Basic Medicine, Guizhou University of Traditional Chinese Medicine, Guiyang, 550025, China.
| | - Qiucheng Guo
- School of Basic Medicine, Guizhou University of Traditional Chinese Medicine, Guiyang, 550025, China.
| | - Shuguang Zheng
- School of Basic Medicine, Guizhou University of Traditional Chinese Medicine, Guiyang, 550025, China; The First Affiliated Hospital of Guizhou University of Traditional Chinese Medicine, Guiyang, 550025, China.
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Dzhambazov B, Batsalova T, Merky P, Lange F, Holmdahl R. NIH/3T3 Fibroblasts Selectively Activate T Cells Specific for Posttranslationally Modified Collagen Type II. Int J Mol Sci 2023; 24:10811. [PMID: 37445989 DOI: 10.3390/ijms241310811] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2023] [Revised: 06/23/2023] [Accepted: 06/27/2023] [Indexed: 07/15/2023] Open
Abstract
It has been shown that synovial fibroblasts (SF) play a key role in the initiation of inflammation and joint destruction, leading to arthritis progression. Fibroblasts may express major histocompatibility complex class II region (MHCII) molecules, and thus, they could be able to process and present antigens to immunocompetent cells. Here we examine whether different types of fibroblasts (synovial, dermal, and thymic murine fibroblasts, destructive LS48 fibroblasts, and noninvasive NIH/3T3 fibroblasts) may be involved in the initiation of rheumatoid arthritis (RA) pathogenesis and can process and present type II collagen (COL2)-an autoantigen associated with RA. Using a panel of MHCII/Aq-restricted T-cell hybridoma lines that specifically recognize an immunodominant COL2 epitope (COL2259-273), we found that NIH/3T3 fibroblasts activate several T-cell clones that recognize the posttranslationally glycosylated or hydroxylated COL2259-273 epitope. The HCQ.3 hybridoma, which is specific for the glycosylated immunodominant COL2 epitope 259-273 (Gal264), showed the strongest response. Interestingly, NIH/3T3 cells, but not destructive LS48 fibroblasts, synovial, dermal, or thymic fibroblasts, were able to stimulate the HCQ.3 hybridoma and other COL2-specific T-cell hybridomas. Our experiments revealed that NIH/3T3 fibroblasts are able to activate COL2-specific T-cell hybridomas even in the absence of COL2 or a posttranslationally modified COL2 peptide. The mechanism of this unusual activation is contact-dependent and involves the T-cell receptor (TCR) complex.
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Affiliation(s)
- Balik Dzhambazov
- Faculty of Biology, Paisii Hilendarski University of Plovdiv, 4000 Plovdiv, Bulgaria
| | - Tsvetelina Batsalova
- Faculty of Biology, Paisii Hilendarski University of Plovdiv, 4000 Plovdiv, Bulgaria
| | | | - Franziska Lange
- Fraunhofer Institute for Cell Therapy and Immunology (IZI), 04103 Leipzig, Germany
| | - Rikard Holmdahl
- Section of Medical Inflammation Research, Department of Medical Biochemistry and Biophysics, Karolinska Institute, 17177 Stockholm, Sweden
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Su Y, Ran CQ, Liu ZL, Yang Y, Yuan G, Hu SH, Yu XF, He WT. Case report: Autosomal recessive type 3 Stickler syndrome caused by compound heterozygous mutations in COL11A2. Front Genet 2023; 14:1154087. [PMID: 37347055 PMCID: PMC10279880 DOI: 10.3389/fgene.2023.1154087] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2023] [Accepted: 05/25/2023] [Indexed: 06/23/2023] Open
Abstract
Background: Stickler syndrome (SS) is a group of hereditary collagenopathies caused by a variety of collagen and non-collagen genes. Affected patients have characteristic manifestations involving ophthalmic, articular, craniofacial and auditory disorders. SS is classified into several subtypes according to clinical and molecular features. Type 3 SS is an ultra-rare disease, known as non-ocular SS or otospondylomegaepiphyseal dysplasia (OSMED) with only a few pathogenic COL11A2 variants reported to date. Case presentation: A 29-year-old Chinese male was referred to our hospital for hearing loss and multiple joint pain. He presented a phenotype highly suggestive of OSMED, including progressive sensorineural deafness, spondyloepiphyseal dysplasia with large epiphyses, platyspondyly, degenerative osteoarthritis, and sunken nasal bridge. We detected compound heterozygous mutations in COL11A2, both of which were predicted to be splicing mutations. One is synonymous mutation c.3774C>T (p.Gly1258Gly) supposed to be a splice site mutation, the other is a novel intron mutation c.4750 + 5 G>A, which is a highly conservative site across several species. We also present a review of the current known pathogenic mutation spectrum of COL11A2 in patients with type 3 SS. Conclusion: Both synonymous extonic and intronic variants are easily overlooked by whole-exome sequencing. For patients with clinical manifestations suspected of SS syndrome, next-generation whole-genome sequencing is necessary for precision diagnosis and genetic counseling.
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Affiliation(s)
- Ying Su
- Division of Endocrinology, Department of Internal Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Branch of National Clinical Research Center for Metabolic Diseases, Wuhan, China
| | - Chun-Qiong Ran
- Division of Endocrinology, Department of Internal Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Branch of National Clinical Research Center for Metabolic Diseases, Wuhan, China
| | - Zhe-Long Liu
- Division of Endocrinology, Department of Internal Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Branch of National Clinical Research Center for Metabolic Diseases, Wuhan, China
| | - Yan Yang
- Division of Endocrinology, Department of Internal Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Branch of National Clinical Research Center for Metabolic Diseases, Wuhan, China
| | - Gang Yuan
- Division of Endocrinology, Department of Internal Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Branch of National Clinical Research Center for Metabolic Diseases, Wuhan, China
| | - Shu-Hong Hu
- Division of Endocrinology, Department of Internal Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Branch of National Clinical Research Center for Metabolic Diseases, Wuhan, China
| | - Xue-Feng Yu
- Division of Endocrinology, Department of Internal Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Branch of National Clinical Research Center for Metabolic Diseases, Wuhan, China
| | - Wen-Tao He
- Division of Endocrinology, Department of Internal Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Branch of National Clinical Research Center for Metabolic Diseases, Wuhan, China
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Karila T, Tervahartiala T, Cohen B, Sorsa T. The collagenases: are they tractable targets for preventing cartilage destruction in osteoarthritis? Expert Opin Ther Targets 2022; 26:93-105. [PMID: 35081858 DOI: 10.1080/14728222.2022.2035362] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
INTRODUCTION The etiology and pathogenesis of osteoarthritis (OA) have been intensely investigated; however, the disease course and progression are not completely understood. A prominent role for interstitial collagenases is recognized in this degenerative process, hence strategies to target them are of major interest. AREAS COVERED The pathogenesis of OA, the role of interstitial collagenases (MMP-1, -8 and -13) and collagenase modifying drugs are examined and discussed. We reviewed relevant papers from PubMed and Google Scholar. EXPERT OPINION There is strong evidence for the therapeutic potential of MMP inhibitors in OA; however, they are not expected to impact the inflammatory process. Therefore, there is a need for a relative inhibitor of MMP-13 collagenase which possesses anti-inflammatory properties. The identification of novel broad-spectrum relative multiple peptidase inhibitors could provide desirable tools for the prophylaxis, cure, or treatment of diseases involving articular cartilage (AC) degradation, in particular OA.
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Affiliation(s)
- Tuomo Karila
- Hospital Orton, Helsinki, Finland.,Department of Pharmacology, Faculty of Medicine, University of Helsinki, Helsinki, Finland
| | - Taina Tervahartiala
- Department of Oral and Maxillofacial Diseases, University of Helsinki, and Helsinki University Central Hospital, Helsinki, Finland
| | | | - Timo Sorsa
- Department of Oral and Maxillofacial Diseases, University of Helsinki, and Helsinki University Central Hospital, Helsinki, Finland.,Division of Periodontology, Department of Dental Medicine, Karolinska Institutet, Huddinge, Sweden
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Donahue RP, Nordberg RC, Bielajew BJ, Hu JC, Athanasiou KA. The effect of neonatal, juvenile, and adult donors on rejuvenated neocartilage functional properties. Tissue Eng Part A 2021; 28:383-393. [PMID: 34605665 PMCID: PMC9131355 DOI: 10.1089/ten.tea.2021.0167] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Abstract
Cartilage does not naturally heal, and cartilage lesions from trauma and wear-and-tear can lead to eventual osteoarthritis. To address long-term repair, tissue engineering of functional biologic implants to treat cartilage lesions is desirable, but the development of such implants is hindered by several limitations including 1) donor tissue scarcity due to the presence of diseased tissues in joints, 2) dedifferentiation of chondrocytes during expansion, and 3) differences in functional output of cells dependent on donor age. Toward overcoming these challenges, 1) costal cartilage has been explored as a donor tissue, and 2) methods have been developed to rejuvenate the chondrogenic phenotype of passaged chondrocytes for generating self-assembled neocartilage. However, it remains unclear how the rejuvenation processes are influenced by donor age, and, thus, how to develop strategies that specifically target age-related differences. Using histological, biochemical, proteomic, and mechanical assays, this study sought to determine the differences among neocartilage generated from neonatal, juvenile, and adult donors using the Yucatan minipig, a clinically relevant large animal model. Based on the literature, a relatively young adult population of animals was chosen due to a reduction in functional output of human articular chondrocytes after 40 years of age. After isolation, costal chondrocytes were expanded, rejuvenated, and self-assembled, and the neocartilages were assessed. The aggregate modulus values of neonatal constructs were at least 1.65-fold of those from the juvenile or adult constructs. Poisson's ratio also significantly differed among all groups, with neonatal constructs exhibiting values 49% higher than adult constructs. Surprisingly, other functional properties such as tensile modulus and GAG content did not significantly differ among groups. Total collagen content was slightly elevated in the adult constructs when compared to neonatal and juvenile constructs. A more nuanced view via bottom-up mass spectrometry showed that Col2a1 protein was not significantly different among groups, but content of several other collagen subtypes (i.e., Col1a1, Col9a1, Col11a2, and Col12a1) was modulated by donor age. For example, Col12a1 in adult constructs was found to be 102.9% higher than neonatal-derived constructs. Despite these differences, this study shows that different aged donors can be used to generate neocartilages of similar functional properties.
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Affiliation(s)
- Ryan P Donahue
- University of California, Irvine, Biomedical Engineering, Irvine, California, United States;
| | - Rachel C Nordberg
- University of California, Irvine, Biomedical Engineering, Irvine, California, United States;
| | - Benjamin J Bielajew
- University of California, Irvine, Biomedical Engineering, Irvine, California, United States;
| | - Jerry C Hu
- University of California, Irvine, Biomedical Engineering, Irvine, California, United States;
| | - Kyriacos A Athanasiou
- University of California, Irvine, Biomedical Engineering, Irvine, California, United States;
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6
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Zhang X, Wang H, Lou L, Li Q, Zhang L, Ge Y. Transcript expression profiling of fibromelanosis-related genes in black-bone chickens. Br Poult Sci 2021; 63:133-141. [PMID: 34402346 DOI: 10.1080/00071668.2021.1966750] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
1. The aim of the present study was to identify differentially expressed genes (DEGs) and metabolic pathways involved in this phenotype. Fibromelanosis is the most striking feature of black-bone chickens, such as the Silkie and Dongxiang indigenous breeds. Due to the accumulation of eumelanin in connective tissues, fibromelanosis manifests as black colouration of the skin, muscles, gut, and periosteum. Studies on fibromelanosis can provide useful information pertaining to human diseases and offer commercial value to the poultry industry. However, the genetic basis of fibromelanosis remains unclear.2. Digital gene expression analysis was performed on black and white skin samples collected from the HW1 black-bone chicken line to detect differences in genome-wide expression patterns. A total of >30 billion bp were sequenced, and 2,707,926,466 bp and 2,948,782,964 bp of clean data obtained for creation of libraries for black and white skin, respectively. In total, 252 DEGs from 15,508 mapped genes were identified with 83 up-regulated in white skin and 169 up-regulated in black skin.3. Gene ontology analysis highlighted that genes from the extracellular region and associated components were abundant among the DEGs. Pathway analysis revealed that many DEGs were linked to amino acid metabolism and the immune system. qRT-PCR validation using 14 genes showed good conformity with the sequence analysis of fibromelanosis-related genes.4. The results showed that L-dopachrometautomerase precursor (DCT), tyrosine aminotransferase (TAT), 4-hydroxyphenylpyruvate dioxygenase (HPD) from the tyrosine metabolism pathway, coagulation factor II (F2), fibrinogen beta chain (FGB), plasminogen (PLG) and complement component 7 (C7) from the complement and coagulation cascades were important genes in the fibromelanosis process in black-bone chickens. These candidate genes require further correlation analysis and functional verification.
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Affiliation(s)
- X Zhang
- Institute of Animal Husbandry, Hangzhou Academy of Agricultural Sciences, Hangzhou, China
| | - H Wang
- Institute of Animal Husbandry, Hangzhou Academy of Agricultural Sciences, Hangzhou, China
| | - L Lou
- Institute of Animal Husbandry, Hangzhou Academy of Agricultural Sciences, Hangzhou, China
| | - Q Li
- Institute of Animal Husbandry, Hangzhou Academy of Agricultural Sciences, Hangzhou, China
| | - L Zhang
- Institute of Animal Husbandry, Hangzhou Academy of Agricultural Sciences, Hangzhou, China
| | - Y Ge
- Institute of Animal Husbandry, Hangzhou Academy of Agricultural Sciences, Hangzhou, China
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7
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Marine Collagen Hydrolysates Promote Collagen Synthesis, Viability and Proliferation While Downregulating the Synthesis of Pro-Catabolic Markers in Human Articular Chondrocytes. Int J Mol Sci 2021; 22:ijms22073693. [PMID: 33916312 PMCID: PMC8036580 DOI: 10.3390/ijms22073693] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2021] [Revised: 03/26/2021] [Accepted: 03/28/2021] [Indexed: 01/08/2023] Open
Abstract
Cartilage is a non-innervated and non-vascularized tissue. It is composed of one main cell type, the chondrocyte, which governs homeostasis within the cartilage tissue, but has low metabolic activity. Articular cartilage undergoes substantial stresses that lead to chondral defects, and inevitably osteoarthritis (OA) due to the low intrinsic repair capacity of cartilage. OA remains an incurable degenerative disease. In this context, several dietary supplements have shown promising results, notably in the relief of OA symptoms. In this study, we investigated the effects of collagen hydrolysates derived from fish skin (Promerim®30 and Promerim®60) and fish cartilage (Promerim®40) on the phenotype and metabolism of human articular chondrocytes (HACs). First, we demonstrated the safety of Promerim® hydrolysates on HACs cultured in monolayers. Then we showed that, Promerim® hydrolysates can increase the HAC viability and proliferation, while decreasing HAC SA-β-galactosidase activity. To evaluate the effect of Promerim® on a more relevant model of culture, HAC were cultured as organoids in the presence of Promerim® hydrolysates with or without IL-1β to mimic an OA environment. In such conditions, Promerim® hydrolysates led to a decrease in the transcript levels of some proteases that play a major role in the development of OA, such as Htra1 and metalloproteinase-1. Promerim® hydrolysates downregulated HtrA1 protein expression. In contrast, the treatment of cartilage organoids with Promerim® hydrolysates increased the neosynthesis of type I collagen (Promerim®30, 40 and 60) and type II collagen isoforms (Promerim®30 and 40), the latter being the major characteristic component of the cartilage extracellular matrix. Altogether, our results demonstrate that the use of Promerim® hydrolysates hold promise as complementary dietary supplements in combination with the current classical treatments or as a preventive therapy to delay the occurrence of OA in humans.
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Theodoridis K, Manthou ME, Aggelidou E, Kritis A. In Vivo Cartilage Regeneration with Cell-Seeded Natural Biomaterial Scaffold Implants: 15-Year Study. TISSUE ENGINEERING PART B-REVIEWS 2021; 28:206-245. [PMID: 33470169 DOI: 10.1089/ten.teb.2020.0295] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Articular cartilage can be easily damaged from human's daily activities, leading to inflammation and to osteoarthritis, a situation that can diminish the patients' quality of life. For larger cartilage defects, scaffolds are employed to provide cells the appropriate three-dimensional environment to proliferate and differentiate into healthy cartilage tissue. Natural biomaterials used as scaffolds, attract researchers' interest because of their relative nontoxic nature, their abundance as natural products, their easy combination with other materials, and the relative easiness to establish Marketing Authorization. The last 15 years were chosen to review, document, and elucidate the developments on cell-seeded natural biomaterials for articular cartilage treatment in vivo. The parameters of the experimental designs and their results were all documented and presented. Considerations about the newly formed cartilage and the treatment of cartilage defects were discussed, along with difficulties arising when applying natural materials, research limitations, and tissue engineering approaches for hyaline cartilage regeneration.
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Affiliation(s)
- Konstantinos Theodoridis
- Department of Physiology and Pharmacology, Faculty of Health Sciences and cGMP Regenerative Medicine Facility, School of Medicine, Aristotle University of Thessaloniki (A.U.Th), Thessaloniki, Greece
| | - Maria Eleni Manthou
- Laboratory of Histology, Embryology, and Anthropology, Faculty of Health Sciences, School of Medicine, Aristotle University of Thessaloniki (A.U.Th), Thessaloniki, Greece
| | - Eleni Aggelidou
- Department of Physiology and Pharmacology, Faculty of Health Sciences and cGMP Regenerative Medicine Facility, School of Medicine, Aristotle University of Thessaloniki (A.U.Th), Thessaloniki, Greece
| | - Aristeidis Kritis
- Department of Physiology and Pharmacology, Faculty of Health Sciences and cGMP Regenerative Medicine Facility, School of Medicine, Aristotle University of Thessaloniki (A.U.Th), Thessaloniki, Greece
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9
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Smith TD, Reynolds RL, Mano N, Wood BJ, Oladipupo L, Hughes GK, Corbin HM, Taylor J, Ufelle A, Burrows AM, Durham E, Vinyard CJ, Cray JJ, DeLeon VB. Cranial synchondroses of primates at birth. Anat Rec (Hoboken) 2020; 304:1020-1053. [DOI: 10.1002/ar.24521] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2020] [Revised: 07/09/2020] [Accepted: 07/22/2020] [Indexed: 12/21/2022]
Affiliation(s)
- Timothy D. Smith
- School of Physical Therapy Slippery Rock University Slippery Rock Pennsylvania USA
| | - Rebecca L. Reynolds
- Department of Biology Slippery Rock University Slippery Rock Pennsylvania USA
| | - Nanami Mano
- School of Physical Therapy Slippery Rock University Slippery Rock Pennsylvania USA
| | - Brody J. Wood
- School of Physical Therapy Slippery Rock University Slippery Rock Pennsylvania USA
| | - Lanre Oladipupo
- School of Physical Therapy Slippery Rock University Slippery Rock Pennsylvania USA
| | - Gabriel K. Hughes
- School of Physical Therapy Slippery Rock University Slippery Rock Pennsylvania USA
| | - Hayley M. Corbin
- Department of Biology Slippery Rock University Slippery Rock Pennsylvania USA
| | - Jane Taylor
- Department of Biomedical Education and Anatomy The Ohio State College of Medicine Columbus Ohio USA
| | - Alexander Ufelle
- Department of Biology Slippery Rock University Slippery Rock Pennsylvania USA
- Department of Public Health and Social Work Slippery Rock University Slippery Rock PA
| | - Anne M. Burrows
- Department of Physical Therapy Duquesne University Pittsburgh Pennsylvania USA
| | - Emily Durham
- Department of Anthropology Penn State University State College Pennsylvania USA
| | - Christopher J. Vinyard
- Department of Anatomy and Neurobiology Northeast Ohio Medical University Rootstown Ohio USA
| | - James J. Cray
- Department of Biomedical Education and Anatomy The Ohio State College of Medicine Columbus Ohio USA
- Division of Biosciences The Ohio State College of Dentistry Columbus Ohio USA
| | - Valerie B. DeLeon
- Department of Public Health and Social Work Slippery Rock University Slippery Rock PA
- Department of Anthropology University of Florida Gainesville Florida USA
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Vandghanooni S, Eskandani M. Natural polypeptides-based electrically conductive biomaterials for tissue engineering. Int J Biol Macromol 2020; 147:706-733. [PMID: 31923500 DOI: 10.1016/j.ijbiomac.2019.12.249] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2019] [Revised: 12/28/2019] [Accepted: 12/28/2019] [Indexed: 12/11/2022]
Abstract
Fabrication of an appropriate scaffold is the key fundamental step required for a successful tissue engineering (TE). The artificial scaffold as extracellular matrix in TE has noticeable role in the fate of cells in terms of their attachment, proliferation, differentiation, orientation and movement. In addition, chemical and electrical stimulations affect various behaviors of cells such as polarity and functionality. Therefore, the fabrication approach and materials used for the preparation of scaffold should be more considered. Various synthetic and natural polymers have been used extensively for the preparation of scaffolds. The electrically conductive polymers (ECPs), moreover, have been used in combination with other polymers to apply electric fields (EF) during TE. In this context, composites of natural polypeptides and ECPs can be taken into account as context for the preparation of suitable scaffolds with superior biological and physicochemical features. In this review, we overviewed the simultaneous usage of natural polypeptides and ECPs for the fabrication of scaffolds in TE.
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Affiliation(s)
- Somayeh Vandghanooni
- Research Center for Pharmaceutical Nanotechnology, Biomedicine institute, Tabriz University of Medical Sciences, Tabriz, Iran; Hematology and Oncology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Morteza Eskandani
- Research Center for Pharmaceutical Nanotechnology, Biomedicine institute, Tabriz University of Medical Sciences, Tabriz, Iran.
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11
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Militi A, Cutroneo G, Favaloro A, Matarese G, Di Mauro D, Lauritano F, Centofanti A, Cervino G, Nicita F, Bramanti A, Rizzo G. An immunofluorescence study on VEGF and extracellular matrix proteins in human periodontal ligament during tooth movement. Heliyon 2019; 5:e02572. [PMID: 31667410 PMCID: PMC6812246 DOI: 10.1016/j.heliyon.2019.e02572] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2019] [Revised: 08/14/2019] [Accepted: 09/30/2019] [Indexed: 12/04/2022] Open
Abstract
The periodontal ligament (PDL) is a highly vascularized connective tissue surrounding the root of a tooth. In particular, the PDL is continuously exposed to mechanical stresses during the phases of mastication, and it provides physical, sensory, and trophic functions. It is known that the application of orthodontic force creates a change in periodontal structures. In fact, these forces generate a pressure on the ligament that closes the vessels. The aim of this study is to observe the modifications of vascular endothelial growth factor (VEGF) in the PDL and extracellular matrix proteins after application of a pre-calibrated and constant orthodontic force at different phases of treatment. We used a 50-g NiTi coiled spring and in vivo samples of PDL of maxillary and mandibular premolars of patients subjected to orthodontic treatment. These teeth were extracted at 1, 7, 14, 21, and 30 days, respectively, by application of force. The extraction of the PDL was effectuated by scarifying the radicular surface on the pressure and tension sides. The mechanical stress induced by the application of force caused an increase in the reactive type of metabolism of extracellular matrix proteins and modulation of neoangiogenesis until restoration.
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Affiliation(s)
- Angela Militi
- Department of Biomedical and Dental Sciences and Morphofunctional Imaging, University of Messina, Italy
| | - Giuseppina Cutroneo
- Department of Clinic and Experimental Medicine, University of Messina, Italy
| | - Angelo Favaloro
- Department of Biomedical and Dental Sciences and Morphofunctional Imaging, University of Messina, Italy
| | - Giovanni Matarese
- Department of Biomedical and Dental Sciences and Morphofunctional Imaging, University of Messina, Italy
| | - Debora Di Mauro
- Department of Biomedical and Dental Sciences and Morphofunctional Imaging, University of Messina, Italy
| | - Floriana Lauritano
- Department of Biomedical and Dental Sciences and Morphofunctional Imaging, University of Messina, Italy
| | - Antonio Centofanti
- Department of Biomedical and Dental Sciences and Morphofunctional Imaging, University of Messina, Italy
| | - Gabriele Cervino
- Department of Biomedical and Dental Sciences and Morphofunctional Imaging, University of Messina, Italy
| | - Fabiana Nicita
- Department of Biomedical and Dental Sciences and Morphofunctional Imaging, University of Messina, Italy
| | | | - Giuseppina Rizzo
- Department of Biomedical and Dental Sciences and Morphofunctional Imaging, University of Messina, Italy
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12
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Zhang H, Yang L, Yang XG, Wang F, Feng JT, Hua KC, Li Q, Hu YC. Demineralized Bone Matrix Carriers and their Clinical Applications: An Overview. Orthop Surg 2019; 11:725-737. [PMID: 31496049 PMCID: PMC6819172 DOI: 10.1111/os.12509] [Citation(s) in RCA: 80] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/04/2019] [Revised: 07/04/2019] [Accepted: 07/08/2019] [Indexed: 01/06/2023] Open
Abstract
Reconstruction of massive bone defects is challenging for orthopaedic clinicians, especially in cases of severe trauma and resection of tumors in various locales. Autologous iliac crest bone graft (ICBG) is the “gold standard” for bone grafting. However, the limited availability and complications at donor sites resulted in seeking other options like allografts and bone graft substitutes. Demineralized bone matrix (DBM) is a form of allograft using acidic solution to remove mineral components, while leaving much of the proteinaceous components native to bone, with small amounts of calcium‐based solids, inorganic phosphates, and some trace cell debris. It is an osteoconductive and osteoinductive biomaterial and is approved as a medical device for use in bone defects and spinal fusion. To pack consistently into the defect sites and stay firmly in the filling parts, DBM products have various forms combined with biocompatible viscous carriers, including sponges, strips, injectable putty, paste, and paste infused with chips. The present review aims to summarize the properties of various kind of viscous carriers and their clinical use combined with DBM in commercially available products. Given DBM'mercially available products. Given DBM;s long clinical track record and commercial accessibility in standard forms, opportunities to further develop and validate DBM as a versatile bone biomaterial in orthopaedic repair and regenerative medicine contexts are attractive.
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Affiliation(s)
- Hao Zhang
- Department of Bone Tumor, Tianjin Hospital, Tianjin, China.,Graduate School, Tianjin Medical University, Tianjin, China
| | - Li Yang
- Graduate School, Tianjin Medical University, Tianjin, China
| | | | - Feng Wang
- Graduate School, Tianjin Medical University, Tianjin, China
| | - Jiang-Tao Feng
- Graduate School, Tianjin Medical University, Tianjin, China
| | - Kun-Chi Hua
- Graduate School, Tianjin Medical University, Tianjin, China
| | - Qi Li
- Beijing Wonderful Medical Biomaterial Co. Ltd., Beijing, China
| | - Yong-Cheng Hu
- Department of Bone Tumor, Tianjin Hospital, Tianjin, China
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13
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Thielen NGM, van der Kraan PM, van Caam APM. TGFβ/BMP Signaling Pathway in Cartilage Homeostasis. Cells 2019; 8:cells8090969. [PMID: 31450621 PMCID: PMC6769927 DOI: 10.3390/cells8090969] [Citation(s) in RCA: 142] [Impact Index Per Article: 28.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2019] [Revised: 08/09/2019] [Accepted: 08/19/2019] [Indexed: 01/15/2023] Open
Abstract
Cartilage homeostasis is governed by articular chondrocytes via their ability to modulate extracellular matrix production and degradation. In turn, chondrocyte activity is regulated by growth factors such as those of the transforming growth factor β (TGFβ) family. Members of this family include the TGFβs, bone morphogenetic proteins (BMPs), and growth and differentiation factors (GDFs). Signaling by this protein family uniquely activates SMAD-dependent signaling and transcription but also activates SMAD-independent signaling via MAPKs such as ERK and TAK1. This review will address the pivotal role of the TGFβ family in cartilage biology by listing several TGFβ family members and describing their signaling and importance for cartilage maintenance. In addition, it is discussed how (pathological) processes such as aging, mechanical stress, and inflammation contribute to altered TGFβ family signaling, leading to disturbed cartilage metabolism and disease.
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Affiliation(s)
- Nathalie G M Thielen
- Experimental Rheumatology, Radboud University Medical Center, Geert Grooteplein 28, 6525 GA Nijmegen, The Netherlands
| | - Peter M van der Kraan
- Experimental Rheumatology, Radboud University Medical Center, Geert Grooteplein 28, 6525 GA Nijmegen, The Netherlands
| | - Arjan P M van Caam
- Experimental Rheumatology, Radboud University Medical Center, Geert Grooteplein 28, 6525 GA Nijmegen, The Netherlands.
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14
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BOYANICH R, BECKER T, CHEN F, KIRK TB, ALLISON G, WU J. Application of confocal, SHG and atomic force microscopy for characterizing the structure of the most superficial layer of articular cartilage. J Microsc 2019; 275:159-171. [DOI: 10.1111/jmi.12824] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2019] [Revised: 06/29/2019] [Accepted: 07/03/2019] [Indexed: 01/19/2023]
Affiliation(s)
- R. BOYANICH
- School of Civil and Mechanical EngineeringCurtin University Perth Western Australia Australia
| | - T. BECKER
- School of Molecular and Life Sciences/Curtin Institute for Functional Molecules and InterfacesCurtin University Perth Western Australia Australia
| | - F. CHEN
- Department of Biomedical EngineeringSouthern University of Science and Technology (SUSTech) Shenzhen China
| | - T. B. KIRK
- School of Civil and Mechanical EngineeringCurtin University Perth Western Australia Australia
| | - G. ALLISON
- Research Office at CurtinCurtin University Perth Western Australia Australia
| | - J.‐P. WU
- Academy of Advanced Interdisciplinary StudiesSouthern University of Science and Technology (SUSTech) Shenzhen China
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15
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Lu Y, Zhang S, Wang Y, Ren X, Han J. Molecular mechanisms and clinical manifestations of rare genetic disorders associated with type I collagen. Intractable Rare Dis Res 2019; 8:98-107. [PMID: 31218159 PMCID: PMC6557237 DOI: 10.5582/irdr.2019.01064] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Type I collagen is an important structural protein of bone, skin, tendon, ligament and other connective tissues. It is initially synthesized as a precursor form, procollagen, consisting of two identical pro-α1(I) and one proα2(I) chains, encoded by COL1A1 and COL1A2, respectively. The N- and C- terminal propeptides of procollagen are cleavage by N-proteinase and C-proteinase correspondingly, to form the central triple helix structure with Gly-X-Y repeat units. Mutations of COL1A1 and COL1A2 genes are associated with osteogenesis imperfecta, some types of Ehlers-Danlos syndrome, Caffey diseases, and osteogenesis imperfect/Ehlers- Danlos syndrome overlapping diseases. Clinical symptoms caused by different variations can be variable or similar, mild to lethal, and vice versa. We reviewed the relationship between clinical manifestations and type I collagen - related rare genetic disorders and their possible molecular mechanisms for different mutations and disorders.
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Affiliation(s)
- Yanqin Lu
- Key Laboratory for Biotech-Drugs of National Health Commission, Key Laboratory for Rare & Uncommon Diseases of Shandong Province, Shandong Medicinal Biotechnology Centre, Shandong First Medical University & Shandong Academy of Medical Sciences, Ji'nan, China
- School of Medicine and Life Sciences, University of Jinan-Shandong Academy of Medical Sciences, Ji'nan, China
- Address correspondence to:Dr. Yanqin Lu, Shandong First Medical University & Shandong Academy of Medical Sciences, 18877 Jingshi Road, Ji'nan 250062, China. E-mail:
| | - Shie Zhang
- Key Laboratory for Biotech-Drugs of National Health Commission, Key Laboratory for Rare & Uncommon Diseases of Shandong Province, Shandong Medicinal Biotechnology Centre, Shandong First Medical University & Shandong Academy of Medical Sciences, Ji'nan, China
- School of Medicine and Life Sciences, University of Jinan-Shandong Academy of Medical Sciences, Ji'nan, China
| | - Yanzhou Wang
- Shandong Provincial Hospital Affiliated to Shandong First Medical University, Ji'nan, China
| | - Xiuzhi Ren
- Department of Orthopaedic Surgery, The People’s Hospital of Wuqing District, Tianjin, China
| | - Jinxiang Han
- Key Laboratory for Biotech-Drugs of National Health Commission, Key Laboratory for Rare & Uncommon Diseases of Shandong Province, Shandong Medicinal Biotechnology Centre, Shandong First Medical University & Shandong Academy of Medical Sciences, Ji'nan, China
- School of Medicine and Life Sciences, University of Jinan-Shandong Academy of Medical Sciences, Ji'nan, China
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16
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Liu Y, Tian K, Hao J, Yang T, Geng X, Zhang W. Biomimetic poly(glycerol sebacate)/polycaprolactone blend scaffolds for cartilage tissue engineering. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2019; 30:53. [PMID: 31037512 DOI: 10.1007/s10856-019-6257-3] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/20/2018] [Accepted: 04/16/2019] [Indexed: 06/09/2023]
Abstract
Poly (glycerol sebacate) (PGS) is a synthetic polymeric material with the characteristics of controllable degradation, high plasticity and excellent biocompatibility. However, the time of PGS degradation is faster than that of cartilage regeneration, which limits its application in cartilage tissue engineering. Polycaprolactone (PCL), a widely used synthetic polymer, has appropriate biodegradability and higher mechanical strength. This study aims to make a scaffold from blends of fast degrading PGS and slowly degrading PCL, and to investigate its potential for cartilage tissue engineering applications. Scanning electron microscopic analysis indicated that the scaffolds provided favourable porous microstructures. In vitro degradation test showed that PGS/ PCL scaffolds acquired longer degradation time and better mechanical strength. PGS/PCL scaffolds seeded with Bone marrow-derived mesenchymal stem cells (BMSCs) and articular chondrocytes (ACCs) were cultured in vitro. Short-term in vitro experiments confirmed that both seeded cells could adhere and proliferate on the scaffold. Chondrogenic culture for cell-scaffold constructs confirmed BMSCs could differentiate into chondrocyte-like cells in PGS/PCL scaffolds. With tunable biodegradation, favorable mechanical properties and cytocompatibility, PGS/PCL scaffolds would potentially be suitable for the regeneration of cartilage tissue. Poly (glycerol sebacate) (PGS) is a synthetic polymeric material with the characteristics of controllable degradation, high plasticity and good biocompatibility. However, the time of PGS degradation is faster than that of cartilage regeneration, which limits its application in cartilage tissue engineering. Polycaprolactone(PCL), a widely used synthetic polymer, has appropriate biodegradability. This study aims to make a scaffold from blends of fast degrading PGS and slowly degrading PCL, and to investigate its potential for cartilage tissue engineering applications. Scanning electron microscopic analysis indicated that the scaffolds provided favourable porous microstructures. In vitro degradation test showed that PGS/ PCL scaffolds got longer degradation time with surface degradation nature. PGS/PCL scaffolds seeded with Bone marrow-derived mesenchymal stem cells (BMSCs) and articular chondrocytes (ACCs) were cultured in vitro under the same condition. Short-term in vitro experiments confirmed that both seed cells could adhere and proliferate on the scaffold. Chondrogenic culture for cell-scaffold constructs confirmed BMSCs could differentiate into chondrocyte-like cells and form cartilage-specific matrix in PGS/PCL scaffolds. With cytocompatibility and biodegradation profile, PGS/PCL scaffolds get great potential for cartilage tissue engineering.
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Affiliation(s)
- Yadong Liu
- First Affiliated Hospital of Dalian Medical University, Dalian, China
- Dalian Municipal Central Hospital Affiliated of Dalian Medical University, Dalian, China
| | - Kang Tian
- First Affiliated Hospital of Dalian Medical University, Dalian, China
| | - Jun Hao
- First Affiliated Hospital of Dalian Medical University, Dalian, China
| | - Tao Yang
- First Affiliated Hospital of Dalian Medical University, Dalian, China
| | - Xiaoling Geng
- First Affiliated Hospital of Dalian Medical University, Dalian, China
| | - Weiguo Zhang
- First Affiliated Hospital of Dalian Medical University, Dalian, China.
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17
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Xu Y, Xu S, Gao Z, Xiao L, Xiao F, Xu H, Zhang X. Degree of endplate chondrocyte degeneration in different tension regions during mechanical stimulation. Mol Med Rep 2018; 17:4415-4421. [PMID: 29344659 PMCID: PMC5802215 DOI: 10.3892/mmr.2018.8435] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2017] [Accepted: 11/16/2017] [Indexed: 01/15/2023] Open
Abstract
The aim of this study was to explore the degree of degeneration of endplate chondrocytes in different tension regions induced by intermittent cyclic mechanical tension (ICMT) in vitro. Rat endplate chondrocytes were harvested and treated with 10% ICMT for 8 h/day with a frequency of 0.5 Hz. A cartilage degeneration model was induced using an FX‑5000T cell strain‑loading system. The experiment was divided into the central region and the peripheral region, according to the contact area between the loading post and the six‑well flexible silicone rubber BioFlex plates. Toluidine blue and phalloidin staining were used to observe the morphological changes of cells following mechanical stimulation. Apoptosis was detected by flow cytometry and the mRNA and protein expression levels of collagen type II α1, aggrecan, SRY‑box 9 and matrix metalloproteinase 13 were detected by reverse transcription‑quantitative polymerase chain reaction (RT‑qPCR) and western blotting, respectively. Endplate chondrocytes exhibited degenerative alterations under mechanical conditions of 10% ICMT and 0.5 Hz at 8 h/day. Toluidine blue and phalloidin staining demonstrated that the cells in the peripheral region were more slender compared with cells in the central region, but RT‑qPCR and western blotting results demonstrated that the degree of cell degeneration between the two groups was not statistically differences. So that cell morphological alteration does not imply that cells have undergone degeneration.
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Affiliation(s)
- Yongming Xu
- Department of Orthopedic Surgery, Yijishan Hospital, The First Affiliated Hospital of Wannan Medical College, Wuhu, Anhui 241001, P.R. China
| | - Shujuan Xu
- Department of Surgery, Yijishan Hospital, The First Affiliated Hospital of Wannan Medical College, Wuhu, Anhui 241001, P.R. China
| | - Zhi Gao
- Department of Orthopedic Surgery, Yijishan Hospital, The First Affiliated Hospital of Wannan Medical College, Wuhu, Anhui 241001, P.R. China
| | - Liang Xiao
- Department of Orthopedic Surgery, Yijishan Hospital, The First Affiliated Hospital of Wannan Medical College, Wuhu, Anhui 241001, P.R. China
| | - Fei Xiao
- Department of Orthopedic Surgery, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200011, P.R. China
| | - Hongguang Xu
- Department of Orthopedic Surgery, Yijishan Hospital, The First Affiliated Hospital of Wannan Medical College, Wuhu, Anhui 241001, P.R. China
| | - Xiaoling Zhang
- Department of Orthopedic Surgery, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200011, P.R. China
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18
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Ren J, Ma J, Zhang X, Aimaiti A, Saiyiti M, Chen Y, Cao L. Diagnostic value of combined serum marker changes and quantitative MRI evaluation of cartilage volume of tibial plateau in a surgically-induced osteoarthritis dog model. J Int Med Res 2017; 45:2023-2035. [PMID: 29125013 PMCID: PMC5805226 DOI: 10.1177/0300060517730452] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
Objective To evaluate the combined diagnostic value of two serum osteoarthritis (OA)
markers and quantitative magnetic resonance imaging (MRI) evaluation of the
cartilage volume of the tibial plateau in a canine model of experimental
OA. Methods A total of 18 male Beagle dogs were used in this longitudinal study. OA was
surgically induced via anterior cruciate ligament transection (ACLT) of the
right knee in 10 dogs. The remaining eight dogs formed the sham operation
control group and underwent the same procedure without ACLT. At various
times after surgery, enzyme-linked immunosorbent assay was used to measure
serum C-telopeptide of type II collagen (CTX-II) and type X collagen (ColX)
levels. Quantitative evaluation of the tibial plateau volume was undertaken
using MRI and ImageJ software. Results The serum CTX-II levels were significantly higher in the OA group at weeks 8,
12 and 16 after surgery, but not at week 4, compared with the control group.
The serum ColX levels in the OA group were significantly higher than in the
control group at weeks 8 and 12. The tibial plateau cartilage volumes in the
OA group were significantly lower than in the control group at weeks 8 and
16. Conclusion Serum CTX-II and ColX levels combined with quantitative MRI evaluation of the
tibial plateau cartilage volume in a canine model of OA demonstrated the
potential to detect and monitor OA progression.
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Affiliation(s)
- Jiangdong Ren
- 1 Department of Joint Surgery, First Affiliated Hospital of Xinjiang Medical University, Urumqi, China
| | - Jinsai Ma
- 3 Department of Orthopaedics, Changji Branch of the First Affiliated Hospital of Xinjiang Medical University, Changji, China
| | - Xiaogang Zhang
- 1 Department of Joint Surgery, First Affiliated Hospital of Xinjiang Medical University, Urumqi, China
| | - Abdusami Aimaiti
- 1 Department of Joint Surgery, First Affiliated Hospital of Xinjiang Medical University, Urumqi, China
| | - Maimaitiming Saiyiti
- 2 Department of Orthopaedics, First Affiliated Hospital of Xinjiang Medical University, Urumqi, China
| | - Yuming Chen
- 4 Department of Pain Management, Changji Branch of the First Affiliated Hospital of Xinjiang Medical University, Changji, China
| | - Li Cao
- 1 Department of Joint Surgery, First Affiliated Hospital of Xinjiang Medical University, Urumqi, China
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19
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Static Compression Induces ECM Remodeling and Integrin α2β1 Expression and Signaling in a Rat Tail Caudal Intervertebral Disc Degeneration Model. Spine (Phila Pa 1976) 2017; 42:E448-E458. [PMID: 27548579 DOI: 10.1097/brs.0000000000001856] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
STUDY DESIGN A three-level rat tail caudal intervertebral disc (IVD) degeneration (IVDD) model was established to study effects of static compression on extracellular matrix (ECM) remodeling and integrin signaling in IVDs during IVDD. OBJECTIVE The aim of this study was to investigate the effect of compression force on ECM remodeling and integrin signaling in IVDs during IVDD. SUMMARY OF BACKGROUND DATA Integrins sense mechanical environment alteration via binding to ECM ligands and trigger intracellular signaling for pathological ECM remodeling during IVDD. However, the role of compression force in ECM remodeling and integrin signaling during IVDD remains elusive. METHODS Compared with the classical one-level rat tail IVDD model that exerts axial stress on the 8th to 9th caudal vertebral bodies, a three-level model was established by using an Ilizarov-type apparatus to exert stress on the 7th to 10th caudal vertebral bodies in rat tails for four weeks. To exclude side effects from surgical stab injury on manipulated discs, intact coccygeal (Co) disc Co8-9 was analyzed. RESULTS In three-level IVDD model, significant degeneration of the Co8-9 disc was observed. Quantitative real-time polymerase chain reaction (qRT-PCR) showed elevated mRNA expression of collagen types I, III, and V; matrix metalloproteinases (MMPs) 2, 3, 9, 13, 14; and decreased mRNA expression of collagen type II in Co8-9 disc. Compression loading altered the expression of integrin α2β1 (upregulated) and α10β1 (downregulated) in NP cells, and activated integrin downstream signaling. By contrast, one-level model showed more severe disc degeneration and ECM remodeling. Integrin α1, α2, α11, and β1 were upregulated, whereas α10 was downregulated. Similar activation of integrin signaling was observed. CONCLUSION Static compression altered collagen and MMP expression, and promoted β1 integrin expression and signaling in IVD. Compared with one-level rat tail IVDD model, three-level model showed milder effects on disc degeneration, ECM remodeling, and integrin expression, suggesting one-level model might involve other causes that induce IVDD via mechanisms independent of compression force. LEVEL OF EVIDENCE N/A.
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20
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Jang Y, Jung H, Nam Y, Rim YA, Kim J, Jeong SH, Ju JH. Centrifugal gravity-induced BMP4 induces chondrogenic differentiation of adipose-derived stem cells via SOX9 upregulation. Stem Cell Res Ther 2016; 7:184. [PMID: 27931264 PMCID: PMC5144493 DOI: 10.1186/s13287-016-0445-6] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2016] [Revised: 11/09/2016] [Accepted: 11/19/2016] [Indexed: 01/05/2023] Open
Abstract
Background Cartilage does not have the capability to regenerate itself. Therefore, stem cell transplantation is a promising therapeutic approach for impaired cartilage. For stem cell transplantation, in vitro enrichment is required; however, stem cells not only become senescent but also lose their differentiation potency during this process. In addition, cytokines are normally used for chondrogenic differentiation induction of stem cells, which is highly expensive and needs an additional step to culture. In this study, we introduced a novel method to induce chondrogenic differentiation of adipose-derived stem cells (ASCs), which are more readily available than bone marrow-derived mesenchymal stem cells(bMSCs), using centrifugal gravity (CG). Methods ASCs were stimulated by loading different degrees of CG (0, 300, 600, 1200, 2400, and 3600 g) to induce chondrogenic differentiation. The expression of chondrogenic differentiation-related genes was examined by RT-PCR, real-time PCR, and western blot analyses. The chondrogenic differentiation of ASCs stimulated with CG was evaluated by comparing the expression of positive markers [aggrecan (ACAN) and collagen type II alpha 1 (COL2A1)] and negative markers (COL1 and COL10) with that in ASCs stimulated with transforming growth factor (TGF)-β1 using micromass culture, immunofluorescence, and staining (Alcian Blue and Safranin O). Results Expression of SOX9 and SOX5 was upregulated by CG (2400 g for 30 min). Increased expression of ACAN and COL2A1 (positive markers) was detected in monolayer-cultured ASCs after CG stimulation, whereas that of COL10 (a negative marker) was not. Expression of bone morphogenetic protein (BMP) 4, an upstream stimulator of SOX9, was upregulated by CG, which was inhibited by Dorsomorphin (an inhibitor of BMP4). Increased expression of proteoglycan, a major component of cartilage, was confirmed in the micromass culture of ASCs stimulated with CG by Alcian Blue and Safranin O staining. Conclusions Chondrogenic differentiation of ASCs can be induced by optimized CG (2400 g for 30 min). Expression of SOX9 is upregulated by CG via increased expression of BMP4. CG has a similar ability to induce SOX9 expression as TGF-β1. Electronic supplementary material The online version of this article (doi:10.1186/s13287-016-0445-6) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Yeonsue Jang
- CiSTEM Laboratory, Convergent Research Consortium for Immunologic Disease, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, 137-701, South Korea.,Division of Rheumatology, Department of Internal Medicine, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, 137-701, South Korea
| | - Hyerin Jung
- CiSTEM Laboratory, Convergent Research Consortium for Immunologic Disease, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, 137-701, South Korea.,Division of Rheumatology, Department of Internal Medicine, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, 137-701, South Korea
| | - Yoojun Nam
- CiSTEM Laboratory, Convergent Research Consortium for Immunologic Disease, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, 137-701, South Korea.,Division of Rheumatology, Department of Internal Medicine, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, 137-701, South Korea
| | - Yeri Alice Rim
- CiSTEM Laboratory, Convergent Research Consortium for Immunologic Disease, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, 137-701, South Korea.,Division of Rheumatology, Department of Internal Medicine, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, 137-701, South Korea
| | - Juryun Kim
- CiSTEM Laboratory, Convergent Research Consortium for Immunologic Disease, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, 137-701, South Korea.,Division of Rheumatology, Department of Internal Medicine, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, 137-701, South Korea
| | - Sang Hoon Jeong
- CiSTEM Laboratory, Convergent Research Consortium for Immunologic Disease, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, 137-701, South Korea.,Division of Rheumatology, Department of Internal Medicine, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, 137-701, South Korea
| | - Ji Hyeon Ju
- CiSTEM Laboratory, Convergent Research Consortium for Immunologic Disease, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, 137-701, South Korea. .,Division of Rheumatology, Department of Internal Medicine, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, 137-701, South Korea.
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Qi Q, Yao L, Liang Z, Yan D, Li Z, Huang Y, Sun J. Production of human type II collagen using an efficient baculovirus-silkworm multigene expression system. Mol Genet Genomics 2016; 291:2189-2198. [DOI: 10.1007/s00438-016-1251-7] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2016] [Accepted: 09/19/2016] [Indexed: 11/28/2022]
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22
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Barnes AL, Genever PG, Rimmer S, Coles MC. Collagen-Poly(N-isopropylacrylamide) Hydrogels with Tunable Properties. Biomacromolecules 2016; 17:723-34. [PMID: 26686360 DOI: 10.1021/acs.biomac.5b01251] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
There is a lack of hydrogel materials whose properties can be tuned at the point of use. Biological hydrogels, such as collagen, gelate at physiological temperatures; however, they are not always ideal as scaffolds because of their low mechanical strength. Their mechanics can be improved through cross-linking and chemical modification, but these methods still require further synthesis. We have demonstrated that by combining collagen with a thermoresponsive polymer, poly(N-isopropylacrylamide) (PNIPAM), the mechanical properties can be improved while maintaining cytocompatibility. Furthermore, different concentrations of this polymer led to a range of hydrogels with shear moduli ranging from 10(5) Pa down to less than 10(2) Pa, similar to the soft tissues in the body. In addition to variable mechanical properties, the hydrogel blends have a range of micron-scale structures and porosities, which caused adipose-derived stromal cells (ADSCs) to adopt different morphologies when encapsulated within and may therefore be able to direct cell fate.
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Affiliation(s)
- Amanda L Barnes
- Department of Biology, University of York , York, YO10 5DD, United Kingdom.,Centre for Immunology and Infection, Department of Biology, University of York , York, YO10 5DD, United Kingdom
| | - Paul G Genever
- Department of Biology, University of York , York, YO10 5DD, United Kingdom
| | - Stephen Rimmer
- School of Chemistry and Forensic Science, University of Bradford , Bradford, West Yorkshire, BD7 1DP, United Kingdom
| | - Mark C Coles
- Centre for Immunology and Infection, Department of Biology, University of York , York, YO10 5DD, United Kingdom
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23
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Bleuel J, Zaucke F, Brüggemann GP, Heilig J, Wolter ML, Hamann N, Firner S, Niehoff A. Moderate cyclic tensile strain alters the assembly of cartilage extracellular matrix proteins in vitro. J Biomech Eng 2015; 137:061009. [PMID: 25782164 DOI: 10.1115/1.4030053] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2014] [Indexed: 12/16/2022]
Abstract
Mechanical loading influences the structural and mechanical properties of articular cartilage. The cartilage matrix protein collagen II essentially determines the tensile properties of the tissue and is adapted in response to loading. The collagen II network is stabilized by the collagen II-binding cartilage oligomeric matrix protein (COMP), collagen IX, and matrilin-3. However, the effect of mechanical loading on these extracellular matrix proteins is not yet understood. Therefore, the aim of this study was to investigate if and how chondrocytes assemble the extracellular matrix proteins collagen II, COMP, collagen IX, and matrilin-3 in response to mechanical loading. Primary murine chondrocytes were applied to cyclic tensile strain (6%, 0.5 Hz, 30 min per day at three consecutive days). The localization of collagen II, COMP, collagen IX, and matrilin-3 in loaded and unloaded cells was determined by immunofluorescence staining. The messenger ribo nucleic acid (mRNA) expression levels and synthesis of the proteins were analyzed using reverse transcription-polymerase chain reaction (RT-PCR) and western blots. Immunofluorescence staining demonstrated that the pattern of collagen II distribution was altered by loading. In loaded chondrocytes, collagen II containing fibrils appeared thicker and strongly co-stained for COMP and collagen IX, whereas the collagen network from unloaded cells was more diffuse and showed minor costaining. Further, the applied load led to a higher amount of COMP in the matrix, determined by western blot analysis. Our results show that moderate cyclic tensile strain altered the assembly of the extracellular collagen network. However, changes in protein amount were only observed for COMP, but not for collagen II, collagen IX, or matrilin-3. The data suggest that the adaptation to mechanical loading is not always the result of changes in RNA and/or protein expression but might also be the result of changes in matrix assembly and structure.
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He Y, Siebuhr AS, Brandt-Hansen NU, Wang J, Su D, Zheng Q, Simonsen O, Petersen KK, Arendt-Nielsen L, Eskehave T, Hoeck HC, Karsdal MA, Bay-Jensen AC. Type X collagen levels are elevated in serum from human osteoarthritis patients and associated with biomarkers of cartilage degradation and inflammation. BMC Musculoskelet Disord 2014; 15:309. [PMID: 25245039 PMCID: PMC4179849 DOI: 10.1186/1471-2474-15-309] [Citation(s) in RCA: 54] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/26/2013] [Accepted: 09/18/2014] [Indexed: 12/14/2022] Open
Abstract
Background Osteoarthritis (OA) is the most common degenerative joint disease, of which the pathogenesis is inadequately understood. Hypertrophy-like changes have been observed as part of the progression of OA. The aim of the study was to develop and characterize a novel biomarker of chondrocytes hypertrophy and investigate how this marker was associated with cartilage degradation and inflammation in patients with various degrees of OA. Methods A competitive ELISA, C-Col10, applying a well-characterized monoclonal antibody was developed as a biomarker of chondrocyte hypertrophy through measurement of type X collagen (ColX). The levels of C-Col10, C2M (matrix metalloproteinase-derived fragments of type II collagen) and hsCRP (high sensitive C-reactive protein) were quantified by ELISAs in serum of 271 OA patients stratified by Kellgren-Lawrence (KL) score 0–4. Associations between serum levels of the three biomarkers (log transformed) were analyzed by Pearson’s correlation and differences in C-Col10 levels between patients with high and low levels of inflammation measured by hsCRP were analyzed by ANOVA. Results We developed a C-Col10 assay measuring the C-terminus of ColX. We found significantly higher levels of ColX in patients with KL score 2 compared to patients with no radiographic evidence of OA (KL0) (p = 0.04). Levels of ColX were significantly elevated in OA patients with above normal hsCRP levels (p < 0.0001), as well as significantly correlated with levels of C2M (r = 0.55, p < 0.0001), which suggested that chondrocyte hypertrophy was associated with inflammation and cartilage degradation. There was no correlation between C2M and hsCRP. Age and BMI adjustment didn’t change the results. Immuno-staining revealed that ColX was predominately located around the hypertrophic chondrocytes and the clustered chondrocytes indicating that C-Col10 measures may be linked to cartilage hypertrophic changes. Conclusions We developed a novel assay, C-Col10, for measurement of chondrocyte hypertrophy and found its levels significantly elevated in OA patients with KL score of 2, and also in OA patients with above normal hsCRP levels. Concentration of C-Col10 strongly correlated with levels of C2M, a marker of cartilage destruction. The data suggest that chondrocyte hypertrophy and subsequent collagen X fragmentation seem to be increased in a subset of patients with inflammatory OA. Electronic supplementary material The online version of this article (doi:10.1186/1471-2474-15-309) contains supplementary material, which is available to authorized users.
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Inkinen S, Liukkonen J, Ylärinne JH, Puhakka PH, Lammi MJ, Virén T, Jurvelin JS, Töyräs J. Collagen and chondrocyte concentrations control ultrasound scattering in agarose scaffolds. ULTRASOUND IN MEDICINE & BIOLOGY 2014; 40:2162-2171. [PMID: 24972499 DOI: 10.1016/j.ultrasmedbio.2014.03.016] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/18/2013] [Revised: 02/19/2014] [Accepted: 03/12/2014] [Indexed: 06/03/2023]
Abstract
Ultrasound imaging has been proposed for diagnostics of osteoarthritis and cartilage injuries in vivo. However, the specific contribution of chondrocytes and collagen to ultrasound scattering in articular cartilage has not been systematically studied. We investigated the role of these tissue structures by measuring ultrasound scattering in agarose scaffolds with varying collagen and chondrocyte concentrations. Ultrasound catheters with center frequencies of 9 MHz (7.1-11.0 MHz, -6 dB) and 40 MHz (30.1-45.3 MHz, -6 dB) were applied using an intravascular ultrasound device. Ultrasound backscattering quantified in a region of interest starting right below sample surface differed significantly (p < 0.05) with the concentrations of collagen and chondrocytes. An ultrasound frequency of 40 MHz, as compared with 9 MHz, was more sensitive to variations in collagen and chondrocyte concentrations. The present findings may improve diagnostic interpretation of arthroscopic ultrasound imaging and provide information necessary for development of models describing ultrasound propagation within cartilage.
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Affiliation(s)
- S Inkinen
- Department of Applied Physics, University of Eastern Finland, Kuopio, Finland; Department of Clinical Neurophysiology, Kuopio University Hospital, Kuopio, Finland.
| | - J Liukkonen
- Department of Applied Physics, University of Eastern Finland, Kuopio, Finland
| | - J H Ylärinne
- School of Medicine, Institute of Biomedicine, University of Eastern Finland, Kuopio, Finland
| | - P H Puhakka
- Department of Applied Physics, University of Eastern Finland, Kuopio, Finland; Department of Clinical Neurophysiology, Kuopio University Hospital, Kuopio, Finland
| | - M J Lammi
- School of Medicine, Institute of Biomedicine, University of Eastern Finland, Kuopio, Finland
| | - T Virén
- Cancer Center, Kuopio University Hospital, Kuopio, Finland
| | - J S Jurvelin
- Department of Applied Physics, University of Eastern Finland, Kuopio, Finland
| | - J Töyräs
- Department of Applied Physics, University of Eastern Finland, Kuopio, Finland; Department of Clinical Neurophysiology, Kuopio University Hospital, Kuopio, Finland
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Osteoarthritic cartilage explants affect extracellular matrix production and composition in cocultured bone marrow-derived mesenchymal stem cells and articular chondrocytes. Stem Cell Res Ther 2014; 5:77. [PMID: 24916039 PMCID: PMC4097830 DOI: 10.1186/scrt466] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2013] [Accepted: 06/04/2014] [Indexed: 12/21/2022] Open
Abstract
Introduction In the present study, we established a novel in vitro coculture model to evaluate the influence of osteoarthritis (OA) cartilage explants on the composition of newly produced matrix and chondrogenic differentiation of human bone marrow-derived mesenchymal stem cells (BMSCs) and the phenotype of OA chondrocytes. In addition, we included a “tri-culture” model, whereby a mixture of BMSCs and chondrocytes was cultured on the surface of OA cartilage explants. Methods Gene expression analysis, protein and glycosaminoglycan (GAG) assays, dot-blot, immunofluorescence, and biomechanical tests were used to characterize the properties of newly generated extracellular matrix (ECM) from chondrocytes and chondrogenically differentiated BMSCs and a mix thereof. We compared articular cartilage explant cocultures with BMSCs, chondrocytes, and mixed cultures (chondrocytes and BMSCs 1:1) embedded in fibrin gels with fibrin gel-embedded cells cultured without cartilage explants (monocultures). Results In general, co- and tri-cultured cell regimens exhibited reduced mRNA and protein levels of collagens I, II, III, and X in comparison with monocultures, whereas no changes in GAG synthesis were observed. All co- and tri-culture regimens tended to exhibit lower Young’s and equilibrium modulus compared with monocultures. In contrast, aggregate modulus and hydraulic permeability seemed to be higher in co- and tri-cultures. Supernatants of cocultures contained significant higher levels of interleukin-1 beta (IL-1β), IL-6, and IL-8. Stimulation of monocultures with IL-1β and IL-6 reduced collagen gene expression in BMSCs and mixed cultures in general but was often upregulated in chondrocytes at late culture time points. IL-8 stimulation affected BMSCs only. Conclusions Our results suggest an inhibitory effect of OA cartilage on the production of collagens. This indicates a distinct modulatory influence that affects the collagen composition of the de novo-produced ECM from co- and tri-cultured cells and leads to impaired mechanical and biochemical properties of the matrix because of an altered fibrillar network. We suggest that soluble factors, including IL-1β and IL-6, released from OA cartilage partly mediate these effects. Thus, neighbored OA cartilage provides inhibitory signals with respect to BMSCs’ chondrogenic differentiation and matrix composition, which need to be accounted for in future cell-based OA treatment strategies.
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Chen YJ, Tsai KS, Chan DC, Lan KC, Chen CF, Yang RS, Liu SH. Honokiol, a low molecular weight natural product, prevents inflammatory response and cartilage matrix degradation in human osteoarthritis chondrocytes. J Orthop Res 2014; 32:573-80. [PMID: 24375705 DOI: 10.1002/jor.22577] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/08/2013] [Accepted: 12/11/2013] [Indexed: 02/04/2023]
Abstract
Proinflammatory cytokine interleukin-1β (IL-1β) stimulates several mediators of cartilage degradation and plays an important role in the pathogenesis of osteoarthritis (OA). Honokiol, a low molecular weight natural product isolated from the Magnolia officinalis, has been shown to possess anti-inflammatory effect. Here, we used an in vitro model of cartilage inflammation to investigate the therapeutic potential of honokiol in OA. Human OA chondrocytes were cultured and pretreated with honokiol (2.5-10 µM) with or without IL-1β (10 ng/ml). Nitric oxide (NO) production was quantified by Griess reagent. Prostaglandin (PG)E2 , metalloproteinase-13 (MMP-13), and interleukin-6 (IL-6) productions were quantified by enzyme-linked immunosorbent assay. The expressions of collagen II, cyclooxygenase-2 (COX-2), inducible nitric oxide synthase (iNOS), and nuclear factor κB (NF-κB)-related signaling molecules were determined by Western blotting. Our data showed that IL-1β markedly stimulated the expressions of iNOS and COX-2 and the productions of NO, PGE2 , and IL-6, which could be significantly reversed by honokiol. Honokiol could also suppress the IL-1β-triggered activation of IKK/IκBα/NF-κB signaling pathway. Moreover, honokiol significantly inhibited the IL-1β-induced MMP-13 production and collagen II reduction. Taken together, the present study suggests that honokiol may have a chondroprotective effect and may be a potential therapeutic choice in the treatment of OA patients.
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Affiliation(s)
- Ying Ju Chen
- Institute of Toxicology, College of Medicine, National Taiwan University, No.1, Jen-Ai Road, Section 1, Taipei, 10051, Taiwan
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Chang DP, Guilak F, Jay GD, Zauscher S. Interaction of lubricin with type II collagen surfaces: adsorption, friction, and normal forces. J Biomech 2013; 47:659-66. [PMID: 24406099 DOI: 10.1016/j.jbiomech.2013.11.048] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2013] [Revised: 11/24/2013] [Accepted: 11/26/2013] [Indexed: 10/25/2022]
Abstract
One of the major constituents of the synovial fluid that is thought to be responsible for chondroprotection and boundary lubrication is the glycoprotein lubricin (PRG4); however, the molecular mechanisms by which lubricin carries out its critical functions still remain largely unknown. We hypothesized that the interaction of lubricin with type II collagen, the main component of the cartilage extracellular matrix, results in enhanced tribological and wear properties. In this study, we examined: (i) the molecular details by which lubricin interacts with type II collagen and how binding is related to boundary lubrication and adhesive interactions; and (ii) whether collagen structure can affect lubricin adsorption and its chondroprotective properties. We found that lubricin adsorbs strongly onto denatured, amorphous, and fibrillar collagen surfaces. Furthermore, we found large repulsive interactions between the collagen surfaces in presence of lubricin, which increased with increasing lubricin concentration. Lubricin attenuated the large friction and also the long-range adhesion between fibrillar collagen surfaces. Interestingly, lubricin adsorbed onto and mediated the frictional response between the denatured and native amorphous collagen surfaces equally and showed no preference on the supramolecular architecture of collagen. However, the coefficient of friction was lowest on fibrillar collagen in the presence of lubricin. We speculate that an important role of lubricin in mediating interactions at the cartilage surface is to attach to the cartilage surface and provide a protective coating that maintains the contacting surfaces in a sterically repulsive state.
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Affiliation(s)
- Debby P Chang
- Department of Mechanical Engineering and Materials Science, Duke University, Durham, NC 27708, USA; Center for Biologically Inspired Materials and Material Systems, Duke University, Durham, NC 27708, USA
| | - Farshid Guilak
- Department of Mechanical Engineering and Materials Science, Duke University, Durham, NC 27708, USA; Center for Biomolecular and Tissue Engineering, Duke University, Durham, NC 27708, USA; Department of Orthopaedic Surgery, Duke University, Durham, NC 27710, USA
| | - Gregory D Jay
- Department of Emergency Medicine, and Brown University, Providence, RI 02903, USA
| | - Stefan Zauscher
- Department of Mechanical Engineering and Materials Science, Duke University, Durham, NC 27708, USA; Center for Biologically Inspired Materials and Material Systems, Duke University, Durham, NC 27708, USA; Center for Biomolecular and Tissue Engineering, Duke University, Durham, NC 27708, USA.
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Kim D, Song J, Han J, Kim Y, Chun CH, Jin EJ. Two non-coding RNAs, MicroRNA-101 and HOTTIP contribute cartilage integrity by epigenetic and homeotic regulation of integrin-α1. Cell Signal 2013; 25:2878-87. [PMID: 24018042 DOI: 10.1016/j.cellsig.2013.08.034] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2013] [Accepted: 08/31/2013] [Indexed: 12/18/2022]
Abstract
Non-coding RNAs have been less studied in cartilage development and destruction regulated by sophisticated molecular events despite their considerable theranostic potential. In this study, we identified significant down-regulation of mR-101 and up-regulation of lncRNA, HOTTIP in the processes of endochondral ossification and osteoarthritic progression. In wing mesenchymal cells, up-expression of miR-101 by TGF-β3 treatment is targeting DNMT-3B and thereby altered the methylation of integrin-α1 addressed as a positive regulator of endochondral ossification in this study. In like manner, down-regulation of miR-101 also coordinately up-regulated DNMT-3B, down-regulated integrin-α1, and resulted in cartilage destruction. In an OA animal model, introduction of lentiviruses that encoded miR-101 or integrin-α1 successfully reduced cartilage destruction. In like manner, long non-coding RNA (lncRNA), HOTTIP, a known regulator for HoxA genes, was highly up-regulated and concurrent down-regulation of HoxA13 displayed the suppression of integrin-α1 in OA chondrocytes. In conclusion, two non-coding RNAs, miR-101 and HOTTIP regulate cartilage development and destruction by modulating integrin-α1 either epigenetically by DNMT-3B or transcriptionally by HoxA13 and data further suggest that these non-coding RNAs could be a potent predictive biomarker for OA as well as a therapeutic target for preventing cartilage-related diseases.
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Affiliation(s)
- Dongkyun Kim
- Department of Biological Sciences, College of Natural Sciences, Wonkwang University, Iksan, Chunbuk 570-749, Republic of Korea
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Zhang Y, Olsen K, Grossi A, Otte J. Effect of pretreatment on enzymatic hydrolysis of bovine collagen and formation of ACE-inhibitory peptides. Food Chem 2013; 141:2343-54. [PMID: 23870967 DOI: 10.1016/j.foodchem.2013.05.058] [Citation(s) in RCA: 75] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2013] [Revised: 03/21/2013] [Accepted: 05/02/2013] [Indexed: 01/29/2023]
Abstract
Bovine collagen was pre-treated (boiled or high pressure (HP)-treated) and then hydrolysed by 6 proteases. The degree of hydrolysis (DH) and the angiotensin-converting enzyme (ACE)-inhibitory activity of hydrolysates were measured. All enzymes used were able to partly degrade collagen and release ACE-inhibitory peptides. The highest ACE-inhibitory activity was obtained with Alcalase. Pretreatment significantly influenced the DH and ACE-inhibition. For most enzymes, boiling for 5 min resulted in a significantly higher DH and ACE-inhibitory activity. With Alcalase and collagenase, hydrolysis and release of ACE-inhibitory peptides occurred without any pretreatment, but HP-treatment significantly improved the DH and ACE-inhibitory activity. HP did not markedly affect the hydrolysis with the other enzymes. The major peptides obtained with Alcalase were identified; all were released from the triple helix structure of collagen. Many of these peptides had C-terminal sequences similar to known ACE-inhibitory peptides. The present results suggest that collagen-rich food materials are good substrates for the release of potent ACE-inhibitory peptides, when proper pre-treatment and enzymatic treatment is applied.
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Affiliation(s)
- Yuhao Zhang
- College of Food Science, Southwest University, No. 2 Tiansheng Road, Beibei District, Chongqing 400716, PR China
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Conceição N, Viegas M, Fidalgo J, Cancela ML. Development and characterization of Xl1, a Xenopus laevis chondrocyte-like cell culture. Mol Cell Biochem 2012; 373:41-51. [PMID: 23054192 DOI: 10.1007/s11010-012-1473-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2012] [Accepted: 09/26/2012] [Indexed: 11/29/2022]
Abstract
We describe the development and characterization of a new cell line, designated Xl1, derived from vertebra and long bones of Xenopus laevis. These cells can mineralize their extracellular matrix upon addition of an inorganic phosphate donor and vitamin C, as characterized by von Kossa staining. In addition they express genes such as matrix gla protein (mgp), alkaline phosphatase, type II collagen, and retinoic acid receptors, representing a valuable tool to analyze expression and regulation of Xenopus cartilage-associated genes. Continuous treatment with retinoic acid (RA) inhibited mineralization, alkaline phosphatase expression and its activity, suggesting that RA is a potential negative regulator of Xl1 cell differentiation. These cells are receptive to efficient transfer of DNA using conventional methods including calcium phosphate, liposome-mediated transfer or electroporation and were found to express basal levels of mgp at least 50-fold higher than the routinely used Xenopus A6 cell line, as seen by transcription assays with the distal X. laevis mgp promoter. Being the first amphibian cell line derived from bone tissue, the Xl1 culture provides an excellent in vitro tool for functional promoter studies, being suitable, among other uses, for identifying promoter elements mediating cartilage-expressed genes as shown here for mgp.
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Affiliation(s)
- Natércia Conceição
- Centre of Marine Sciences (CCMAR), University of Algarve, 8005-139 Faro, Portugal.
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Balasubramanian P, Prabhakaran MP, Sireesha M, Ramakrishna S. Collagen in Human Tissues: Structure, Function, and Biomedical Implications from a Tissue Engineering Perspective. POLYMER COMPOSITES – POLYOLEFIN FRACTIONATION – POLYMERIC PEPTIDOMIMETICS – COLLAGENS 2012. [DOI: 10.1007/12_2012_176] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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Three-dimensional poly(1,8-octanediol-co-citrate) scaffold pore shape and permeability effects on sub-cutaneous in vivo chondrogenesis using primary chondrocytes. Acta Biomater 2011; 7:505-14. [PMID: 20807597 DOI: 10.1016/j.actbio.2010.08.027] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2010] [Revised: 07/29/2010] [Accepted: 08/26/2010] [Indexed: 11/21/2022]
Abstract
The objective of this study was to evaluate the coupled effects of three-dimensional poly(1,8-octanediol-co-citrate) (POC) scaffold pore shape and permeability on chondrogenesis using primary chondrocytes in vivo. Chondrogenesis was characterized as cartilage matrix formation by sulfated glycosaminoglycan (sGAG) quantification, relative mRNA expression of the cartilage-related proteins collagen types I, II and X, aggrecan and matrix metalloproteinases 13 and 3 and the compressive mechanical properties of the tissue/scaffold construct. A low permeability design with a spherical pore shape showed a significantly greater increase in cartilage matrix formation over 6 weeks in vivo than a high permeability design with a cubical pore shape. This increase in cartilage matrix synthesis corresponded with increases in mechanical compressive nonlinear elastic properties and histological data demonstrating darker red Safranin-O staining. There was higher mRNA expression for both cartilage-specific proteins and matrix degradation proteins in the high permeability design, resulting in overall less sGAG retained in the high permeability scaffold compared with the low permeability scaffold. Controlled POC scaffolds with a spherical pore shape and low permeability correlated with significantly increased cartilage matrix production using primary seeded chondrocytes. These results indicate that the low permeability design with a spherical pore shape provided a better microenvironment for chondrogenesis than the high permeability design with a cubical pore shape. Thus, scaffold architecture and material design may have a significant impact on the success of matrix-based clinical cartilage repair strategies.
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Juang YM, Lee CY, Hsu WY, Lin CT, Lai CC, Tsai FJ. Proteomic analysis of chondrocytes exposed to pressure. Biomed Chromatogr 2010; 24:1273-82. [DOI: 10.1002/bmc.1436] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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35
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Barrett-Jolley R, Lewis R, Fallman R, Mobasheri A. The emerging chondrocyte channelome. Front Physiol 2010; 1:135. [PMID: 21423376 PMCID: PMC3059965 DOI: 10.3389/fphys.2010.00135] [Citation(s) in RCA: 77] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2010] [Accepted: 09/09/2010] [Indexed: 11/18/2022] Open
Abstract
Chondrocytes are the resident cells of articular cartilage and are responsible for synthesizing a range of collagenous and non-collagenous extracellular matrix macromolecules. Whilst chondrocytes exist at low densities in the tissue (1-10% of the total tissue volume in mature cartilage) they are extremely active cells and are capable of responding to a range of mechanical and biochemical stimuli. These responses are necessary for the maintenance of viable cartilage and may be compromised in inflammatory diseases such as arthritis. Although chondrocytes are non-excitable cells their plasma membrane contains a rich complement of ion channels. This diverse channelome appears to be as complex as one might expect to find in excitable cells although, in the case of chondrocytes, their functions are far less well understood. The ion channels so far identified in chondrocytes include potassium channels (K(ATP), BK, K(v), and SK), sodium channels (epithelial sodium channels, voltage activated sodium channels), transient receptor potential calcium or non-selective cation channels and chloride channels. In this review we describe this emerging channelome and discuss the possible functions of a range of chondrocyte ion channels.
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Affiliation(s)
- Richard Barrett-Jolley
- Musculoskeletal Research Group, Department of Comparative Molecular Medicine, School of Veterinary Science, University of LiverpoolLiverpool, UK
| | - Rebecca Lewis
- Musculoskeletal Research Group, Department of Comparative Molecular Medicine, School of Veterinary Science, University of LiverpoolLiverpool, UK
| | - Rebecca Fallman
- Musculoskeletal Research Group, Department of Comparative Molecular Medicine, School of Veterinary Science, University of LiverpoolLiverpool, UK
| | - Ali Mobasheri
- Musculoskeletal Research Group, Division of Veterinary Medicine, School of Veterinary Medicine and Science, Faculty of Medicine and Health Sciences, University of NottinghamNottingham, Leicestershire, UK
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36
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Jeong CG, Hollister SJ. Mechanical and biochemical assessments of three-dimensional poly(1,8-octanediol-co-citrate) scaffold pore shape and permeability effects on in vitro chondrogenesis using primary chondrocytes. Tissue Eng Part A 2010; 16:3759-68. [PMID: 20666604 DOI: 10.1089/ten.tea.2010.0103] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Poly(1,8-octanediol-co-citrate) (POC) is a biocompatible, biodegradable elastomer with potential application for soft tissue applications such as cartilage. For chondrogenesis, permeability is a scaffold design target that may influence cartilage regeneration. Scaffold permeability is determined by many factors such as pore shape, pore size, pore interconnectivity, porosity, and so on. Our focus in this study was to examine the effects of pore shape and permeability of two different POC scaffold designs on matrix production, mRNA gene expression, and differentiation of chondrocytes in vitro and the consequent mechanical property changes of the scaffold/tissue constructs. Since type I collagen gel was used as a cell carrier in the POC scaffolds, we also examined the effects of collagen gel concentration on chondrogenesis. We found that lower collagen I gel concentration provides a favorable microenvironment for chondrocytes promoting better chondrogenic performance of chondrocytes. With regard to scaffold design, low permeability with a spherical pore shape better enhanced the chondrogenic performance of chondrocytes in terms of matrix production, and mRNA gene expressions in vitro compared to the highly permeable scaffold with a cubical pore shape.
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Affiliation(s)
- Claire G Jeong
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, Michigan 48109-2125, USA
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Jeong CG, Hollister SJ. A comparison of the influence of material on in vitro cartilage tissue engineering with PCL, PGS, and POC 3D scaffold architecture seeded with chondrocytes. Biomaterials 2010; 31:4304-12. [PMID: 20219243 DOI: 10.1016/j.biomaterials.2010.01.145] [Citation(s) in RCA: 89] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2009] [Accepted: 01/31/2010] [Indexed: 11/16/2022]
Abstract
The goal of this study was to determine material effects on cartilage regeneration for scaffolds with the same controlled architecture. The 3D polycaprolactone (PCL), poly (glycerol sebacate) (PGS), and poly (1,8 octanediol-co-citrate) (POC) scaffolds of the same design were physically characterized and tissue regeneration in terms of cell phenotype, cellular proliferation and differentiation, and matrix production were compared to find which material would be most optimal for cartilage regeneration in vitro. POC provided the best support for cartilage regeneration in terms of tissue ingrowth, matrix production, and relative mRNA expressions for chondrocyte differentiation (Col2/Col1). PGS was seen as the least favorable material for cartilage based on its relatively high de-differentiation (Col1), hypertrophic mRNA expression (Col10) and high matrix degradation (MMP13, MMP3) results. PCL still provided microenvironments suitable for cells to be active yet it seemed to cause de-differentiation (Col1) of chondrocytes inside the scaffold while many cells migrated out, growing cartilage outside the scaffold.
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Affiliation(s)
- Claire G Jeong
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI 48109-2125, USA
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Jansen IDC, Hollander AP, Buttle DJ, Everts V. Type II and VI collagen in nasal and articular cartilage and the effect of IL-1alpha on the distribution of these collagens. J Mol Histol 2010; 41:9-17. [PMID: 20213143 PMCID: PMC2852591 DOI: 10.1007/s10735-010-9257-7] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2009] [Accepted: 02/16/2010] [Indexed: 11/06/2022]
Abstract
The distribution of type II and VI collagen was immunocytochemically investigated in bovine articular and nasal cartilage. Cartilage explants were used either fresh or cultured for up to 4 weeks with or without interleukin 1α (IL-1α). Sections of the explants were incubated with antibodies for both types of collagen. Microscopic analyses revealed that type II collagen was preferentially localized in the interchondron matrix whereas type VI collagen was primarily found in the direct vicinity of the chondrocytes. Treatment of the sections with hyaluronidase greatly enhanced the signal for both types of collagen. Also in sections of explants cultured with IL-1α a higher level of labeling of the collagens was found. This was apparent without any pre-treatment with hyaluronidase. Under the influence of IL-1α the area positive for type VI collagen that surrounded the chondrocytes broadened. Although the two collagens in both types of cartilage were distributed similarly, a remarkable difference was the higher degree of staining of type VI collagen in articular cartilage. Concomitantly we noted that digestion of this type of cartilage hardly occurred in the presence of IL-1α whereas nasal cartilage was almost completely degraded within 18 days of culture. Since type VI collagen is known to be relatively resistant to proteolysis we speculate that the higher level of type VI collagen in articular cartilage is important in protecting cartilage from digestion.
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Affiliation(s)
- I D C Jansen
- Department of Periodontology, Academic Center for Dentistry Amsterdam (ACTA), University of Amsterdam and VU University, Research Institute MOVE, Amsterdam, The Netherlands.
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Järveläinen H, Sainio A, Koulu M, Wight TN, Penttinen R. Extracellular matrix molecules: potential targets in pharmacotherapy. Pharmacol Rev 2010; 61:198-223. [PMID: 19549927 DOI: 10.1124/pr.109.001289] [Citation(s) in RCA: 346] [Impact Index Per Article: 24.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
The extracellular matrix (ECM) consists of numerous macromolecules classified traditionally into collagens, elastin, and microfibrillar proteins, proteoglycans including hyaluronan, and noncollagenous glycoproteins. In addition to being necessary structural components, ECM molecules exhibit important functional roles in the control of key cellular events such as adhesion, migration, proliferation, differentiation, and survival. Any structural inherited or acquired defect and/or metabolic disturbance in the ECM may cause cellular and tissue alterations that can lead to the development or progression of disease. Consequently, ECM molecules are important targets for pharmacotherapy. Specific agents that prevent the excess accumulation of ECM molecules in the vascular system, liver, kidney, skin, and lung; alternatively, agents that inhibit the degradation of the ECM in degenerative diseases such as osteoarthritis would be clinically beneficial. Unfortunately, until recently, the ECM in drug discovery has been largely ignored. However, several of today's drugs that act on various primary targets affect the ECM as a byproduct of the drugs' actions, and this activity may in part be beneficial to the drugs' disease-modifying properties. In the future, agents and compounds targeting directly the ECM will significantly advance the treatment of various human diseases, even those for which efficient therapies are not yet available.
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Affiliation(s)
- Hannu Järveläinen
- Department of Medicine, Turku University Hospital, Kiinamyllynkatu 4-8, FI-20520 Turku, Finland.
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Bradley D, Farquharson M, Gundogdu O, Al-Ebraheem A, Che Ismail E, Kaabar W, Bunk O, Pfeiffer F, Falkenberg G, Bailey M. Applications of condensed matter understanding to medical tissues and disease progression: Elemental analysis and structural integrity of tissue scaffolds. Radiat Phys Chem Oxf Engl 1993 2010. [DOI: 10.1016/j.radphyschem.2008.12.007] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Ekman S, Skiöldebrand E, Heinegård D, Hultenby K. Ultrastructural immunolocalisation of bone sialoprotein in the osteocartilagenous interface of the equine third carpal bone. Equine Vet J 2010; 37:26-30. [PMID: 15651730 DOI: 10.2746/0425164054406937] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
REASONS FOR PERFORMING STUDY One of the most common causes of lameness in racehorses is osteoarthritis (OA). Pathogenesis is not clear and pathological processes of the different joint tissues interact in often progressive events. The interface between cartilage and newly synthesised bone has been shown to be particularly enriched in bone sialoprotein (BSP), a cell-binding matrix protein. OBJECTIVES To establish whether changes in the concentration of BSP may serve as a marker for early biochemical changes of the subchondral bone. METHODS Articular cartilage, cartilage/bone interface and subchondral bone of the proximal third carpal bone from 3 Standardbred trotters were analysed ultrastructurally for the presence of BSP in normal and degenerative areas. RESULTS A marked increase of BSP in the cartilage/bone interface with degenerative changes of the bone and cartilage compared to the morphologically intact cartilage/bone interface was noted, but levels of the protein were distinctly lower in the distal bone. CONCLUSIONS The results indicate that BSP has the potential to be used as a marker for changes in bone metabolism in the subchondral bone. POTENTIAL RELEVANCE Tools to monitor early biochemical changes within the connective tissues of the joint in vivo are essential in studies of the pathogenesis of OA. These could be used to monitor and understand such changes in relation to load, exercise, training programmes, inflammation and the development of OA.
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Affiliation(s)
- S Ekman
- Department of Pathology, SLU, Box 7028, SE-750 07 Uppsala, Sweden
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Skiöldebrand E, Ekman S, Heinegård D, Hultenby K. Ultrastructural immunolocalization of cartilage oligomeric matrix protein (COMP) in the articular cartilage on the equine third carpal bone in trained and untrained horses. Res Vet Sci 2009; 88:251-7. [PMID: 19716571 DOI: 10.1016/j.rvsc.2009.07.011] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2008] [Revised: 04/28/2009] [Accepted: 07/22/2009] [Indexed: 10/20/2022]
Abstract
The present study was designed to delineate the presence of COMP at the ultrastructural level comparing concentrations between two areas of articular cartilage from the equine third carpal bone, subjected to different loading, from trained and untrained horses. We also analyzed the fibril thickness of collagen type II in the same compartments and zones. Samples were collected from high load-bearing areas of the dorsal radial facet (intermittent high load) and an area of the palmar condyle (low constant load) in five non-trained and three trained young racehorses. The data show that COMP is much less abundant in the matrix in intermittent high loaded areas of articular cartilage from trained horses as compared to the untrained horses (p=0.036). On the other hand, the untrained horses often displayed a higher immunolabeling in loaded areas compared to unloaded areas, indicating that an adequate dynamic load promotes COMP synthesis and/or retention, while an excessive load may have an opposite effect. The collagen fibril diameter showed marked variation between individuals. The present study indicates that dynamic in vivo compression at high load and frequency lowers matrix content of COMP in the articular cartilage of the third carpal bone. It also indicates that the collagen network is influenced by mechanical load following by strenuous exercise.
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Affiliation(s)
- E Skiöldebrand
- Department of Biomedical Sciences and Veterinary Public Health, Division of Pathology, Pharmacology and Toxicology, Box 7028, SLU, S-75007 Uppsala, Sweden.
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Järveläinen H, Sainio A, Koulu M, Wight TN, Penttinen R. Extracellular Matrix Molecules: Potential Targets in Pharmacotherapy. Pharmacol Rev 2009. [DOI: 10.1124/pr.109.001289 doi:dx.doi.org] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
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Zustin J, Aigner T. [Osteoarthritis--histopathologic diagnosis: typing, grading, and staging]. DER ORTHOPADE 2009; 38:491-500. [PMID: 19517094 DOI: 10.1007/s00132-008-1399-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
Osteoarthritis is one of the most common diseases in modern western societies, particularly in the elderly, but it is occurring more and more often in the younger and middle-aged population, especially after traumatic injuries. The classification and grading of changes during cartilage degeneration is difficult due to the notoriously high heterogeneity of the disease process and is only partly clinically relevant. Overall, the process of joint destruction can always be evaluated for the pathogenesis (typing), its extent (staging), and the degree of the most extensive focal damage (grading). However, in the clinical routine, description and reporting of the basic findings might be best restricted to specimens obtained from endoprosthetic surgery. Only the identification of previously unknown underlying conditions such as rheumatoid disease, gout, or extensive osteonecrosis is of particular clinical interest.
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Affiliation(s)
- J Zustin
- Institut für Pathologie, UKE Hamburg, Hamburg, Deutschland
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Abstract
Articular cartilage is an avascular tissue with chondrocytes in the deeper zones existing under conditions of sustained hypoxia. Using a hypoxic chamber to provide controlled hypoxia, this study was performed to determine whether sustained hypoxia enhances the production of cartilage matrix proteins. Freshly isolated primary bovine articular chondrocytes were encapsulated in three-dimensional alginate beads and maintained at 2% oxygen with media changes using media pre-equilibrated to 2% oxygen. Immunolocalization of HIF-1alpha was performed to verify hypoxic conditions. Sustained hypoxia resulted in an increase in proteoglycan synthesis after only 1 day, as measured by 35S-sulfate incorporation. This increase was maintained for the duration of the 17 day study. After 17 days of hypoxic culture, increases in total type II collagen and COL2A1 gene expression were probed by indirect immunofluorescence, type II collagen ELISA, and real-time qPCR; in addition, increased glycosaminoglycan deposition was observed as determined by chemical analysis. These studies show that sustained hypoxia enhances articular chondrocyte matrix synthesis and viability in three-dimensional alginate culture.
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Affiliation(s)
- Christian H Coyle
- Cartilage Restoration Laboratory, Department of Orthopaedic Surgery, University of Pittsburgh, Pittsburgh, Pennsylvania 15213, USA
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Stolz M, Gottardi R, Raiteri R, Miot S, Martin I, Imer R, Staufer U, Raducanu A, Düggelin M, Baschong W, Daniels AU, Friederich NF, Aszodi A, Aebi U. Early detection of aging cartilage and osteoarthritis in mice and patient samples using atomic force microscopy. NATURE NANOTECHNOLOGY 2009; 4:186-92. [PMID: 19265849 DOI: 10.1038/nnano.2008.410] [Citation(s) in RCA: 298] [Impact Index Per Article: 19.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/16/2008] [Accepted: 12/13/2008] [Indexed: 05/03/2023]
Abstract
The pathological changes in osteoarthritis--a degenerative joint disease prevalent among older people--start at the molecular scale and spread to the higher levels of the architecture of articular cartilage to cause progressive and irreversible structural and functional damage. At present, there are no treatments to cure or attenuate the degradation of cartilage. Early detection and the ability to monitor the progression of osteoarthritis are therefore important for developing effective therapies. Here, we show that indentation-type atomic force microscopy can monitor age-related morphological and biomechanical changes in the hips of normal and osteoarthritic mice. Early damage in the cartilage of osteoarthritic patients undergoing hip or knee replacements could similarly be detected using this method. Changes due to aging and osteoarthritis are clearly depicted at the nanometre scale well before morphological changes can be observed using current diagnostic methods. Indentation-type atomic force microscopy may potentially be developed into a minimally invasive arthroscopic tool to diagnose the early onset of osteoarthritis in situ.
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Affiliation(s)
- Martin Stolz
- M.E. Müller Institute for Structural Biology, Biozentrum University of Basel, Switzerland.
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Abstract
Major advances in the molecular genetics, paleobiology, and the evolutionary developmental biology of vertebrate skeletogenesis have improved our understanding of the early evolution and development of the vertebrate skeleton. These studies have involved genetic analysis of model organisms, human genetics, comparative developmental studies of basal vertebrates and nonvertebrate chordates, and both cladistic and histological analyses of fossil vertebrates. Integration of these studies has led to renaissance in the area of skeletal development and evolution. Among the major findings that have emerged is the discovery of an unexpectedly deep origin of the gene network that regulates chondrogenesis. In this chapter, we discuss recent progress in each these areas and identify a number of questions that need to be addressed in order to fill key gaps in our knowledge of early skeletal evolution.
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Aigner T, Söder S. [Typing, grading and staging of osteoarthritis: histopathological assessment of joint degeneration]. Z Rheumatol 2008; 67:32-6, 38-40. [PMID: 18214501 DOI: 10.1007/s00393-007-0249-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
Osteoarthritis (degenerative arthropathy) is one of the most common diseases particular in the elderly. Osteoarthritis can principally affect all joints, although the knee, hip and phalangeal joints are most commonly involved in a clinically relevant manner. The grading and classification of changes during cartilage degeneration is complex and only partly informative for clinical management. Overall, the process of joint destruction can always be evaluated for the pathogenesis ("typing"), extent ("staging") and the degree of focal damage ("grading"). However, particularly in the final stages of the disease (e. g. in connection with prosthetic surgery) a description and report should be limited to only the most essential features, because no specific clinical relevance exists for further evaluation. Only the identification of secondary types of degenerative changes, due to as yet unknown rheumatoid diseases, gout or extensive osteonecrosis is of particular interest to clinical colleagues (i.e. typing of the joint lesion).
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Affiliation(s)
- T Aigner
- Institut für Pathologie, Universität Leipzig, Liebigstrasse 26, 04103, Leipzig, Deutschland.
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Woods A, Khan S, Beier F. C-type natriuretic peptide regulates cellular condensation and glycosaminoglycan synthesis during chondrogenesis. Endocrinology 2007; 148:5030-41. [PMID: 17640987 DOI: 10.1210/en.2007-0695] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
C-type natriuretic peptide (CNP) has recently been identified as a key anabolic regulator of endochondral bone growth, but the cellular and molecular mechanisms involved are incompletely understood. Although CNP has been shown to stimulate proliferation and hypertrophic differentiation of growth plate chondrocytes, it is unknown whether CNP affects the earliest stages of endochondral bone development, condensation of mesenchymal precursor cells, and chondrogenesis. Here we demonstrate that CNP increases the number of chondrogenic condensations of mouse embryonic limb bud cells in micromass culture. This is accompanied by increased expression of the cell adhesion molecule N-cadherin. In addition, CNP stimulates glycosaminoglycan synthesis as indicated by increased Alcian blue staining. However, expression of the chondrogenic transcription factors Sox9, -5, and -6 or of the main extracellular matrix genes encoding collagen II and aggrecan is not affected by CNP. Instead, we show that CNP increases expression of enzymes involved in chondroitin sulfate synthesis, a required step in the production of cartilage glycosaminoglycans. In summary, we demonstrate a novel role of CNP in promoting chondrogenesis by stimulating expression of molecules involved in cell adhesion molecules and glycosaminoglycan synthesis.
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Affiliation(s)
- Anita Woods
- Department of Physiology and Pharmacology, University of Western Ontario, London, Ontario, Canada
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