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Liu B, Wang C, Weng Z, Yang Y, Zhao H, Zhang Y, Fei Q, Shi Y, Zhang C. Glycolytic enzyme PKM2 regulates cell senescence but not inflammation in the process of osteoarthritis. Acta Biochim Biophys Sin (Shanghai) 2023; 55:1425-1433. [PMID: 37525533 PMCID: PMC10520488 DOI: 10.3724/abbs.2023062] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2022] [Accepted: 03/19/2023] [Indexed: 04/05/2023] Open
Abstract
Chondrocyte senescence is an important mechanism underlying osteoarthritis in the senile population and is characterized by reduced expressions of the extracellular matrix proteins. The involvement of glycolysis and the tricarboxylic acid cycle in the development of osteoarthritis is inclusive. The present study aims to investigate the role of the glycolytic enzyme M2 isoform of pyruvate kinase (PKM2) in chondrocytes in senescence and inflammation. Primary chondrocytes are isolated from the knee joints of neonatal mice. Small interfering RNAs (siRNAs) against PKM2 are transfected using lipofectamine. RNA sequencing is conducted in primary chondrocytes with the PKM2 gene deleted. Cell apoptosis, autophagy, reactive oxygen species measurement, and senescent conditions are examined. The glycolytic rate in cells is measured by Seahorse examination. Interleukin 1-β (IL-1β) increases the protein expressions of matrix metallopeptidases (MMP)13 and PKM2 and reduces the protein expression of collagen type II (COL2A1) in primary chondrocytes. Silencing of PKM2 alters the protein expressions of MMP13, PKM2, and COL2A1 in the same pattern in quiescent and stimulated chondrocytes. RNA sequencing analysis reveals that PKM2 silencing reduces senescent biomarker p16 INK4a expression. Compared with low-passage chondrocytes, high-passage chondrocytes exhibit increased expression of p16 INK4a and reduced expression of COL2A1. Silencing of PKM2 reduces SA-β-Gal signals and increases COL2A1 expression in high-passage chondrocytes. Seahorse assay reveals that PKM2 deletion favors the tricarboxylic acid cycle in mitochondria in low- but not in high-passage chondrocytes. In summary, the glycolytic enzyme PMK2 modulates chondrocyte senescence but does not participate in the regulation of inflammation.
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Affiliation(s)
- Bo Liu
- Department of Orthopedic SurgeryZhongshan HospitalFudan UniversityShanghai200032China
| | - Chenzhong Wang
- Department of Orthopedic SurgeryZhongshan HospitalFudan UniversityShanghai200032China
| | - Ziyu Weng
- Department of Orthopedic SurgeryZhongshan HospitalFudan UniversityShanghai200032China
| | - Yi Yang
- Department of Orthopedic SurgeryZhongshan HospitalFudan UniversityShanghai200032China
| | - Hong Zhao
- Department of Orthopedic SurgeryZhongshan HospitalFudan UniversityShanghai200032China
| | - Yueqi Zhang
- Department of Orthopedic SurgeryZhongshan HospitalFudan UniversityShanghai200032China
| | - Qinming Fei
- Department of Orthopedic SurgeryZhongshan HospitalFudan UniversityShanghai200032China
| | - Yi Shi
- Biomedical Research CentreZhongshan HospitalFudan UniversityShanghai200032China
| | - Chi Zhang
- Department of Orthopedic SurgeryZhongshan HospitalFudan UniversityShanghai200032China
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Deveza LA, Zankl A, Hunter DJ. Investigation of a family affected by early-onset osteoarthritis - proposal of a clinical pathway and bioinformatics pipeline for the investigation of cases of familial OA. BMC Musculoskelet Disord 2023; 24:570. [PMID: 37443051 DOI: 10.1186/s12891-023-06691-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/13/2023] [Accepted: 07/03/2023] [Indexed: 07/15/2023] Open
Abstract
BACKGROUND Familial cases of early-onset osteoarthritis (OA) are rare although the exact prevalence is unknown. Early recognition of underlying OA-associated disorders is vital for targeted treatment, when available, and genetic counselling, in case of skeletal dysplasias. Currently, there is no clear guidance on how best to investigate families affected by early-onset OA. METHODS We investigated a family with multiple members affected by early-onset OA (age at onset ≤ 40 years). Clinical and demographic characteristics were collected, followed by laboratory investigations screening for a range of potential OA-associated disorders, and whole genome sequencing in selected individuals. RESULTS Seventeen members of the family were included (7 affected and 10 non-affected). There was an even split between the two sexes and two participants were under 18 years old. No pattern of abnormality was seen in the laboratory investigation that could explain the OA phenotype in the family. Whole-genome sequencing was perfomed in one participant and analysed for likely pathogenic variants in genes known to be associated with skeletal dysplasias. A heterozygous variant in the COL2A1 gene was identified (p.Arg519Cys). Confirmatory tests were performed in five additional participants (four affected and one unaffected). CONCLUSION The methodology used in this study, including the clinical pathway and bioinformatics pipeline, could be applied to other families affected by early-onset OA.
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Affiliation(s)
- Leticia A Deveza
- Sydney Musculoskeletal Health, Kolling Institute, Faculty of Medicine, University of Sydney, Camperdown, Australia.
- Rheumatology Department, Royal North Shore Hospital, Reserve Road, St Leonards, NSW, 2065, Australia.
| | - Andreas Zankl
- Sydney Musculoskeletal Health, Kolling Institute, Faculty of Medicine, University of Sydney, Camperdown, Australia
- Department of Clinical Genetics, The Children's Hospital at Westmead, Hawkesbury Road, Westmead, NSW, Australia
- Sydney Medical School, The University of Sydney, Camperdown, NSW, Australia
- Bone Biology Division and Kinghorn Centre for Clinical Genomics, Garvan Institute of Medical Research, Darlinghurst, NSW, Australia
| | - David J Hunter
- Sydney Musculoskeletal Health, Kolling Institute, Faculty of Medicine, University of Sydney, Camperdown, Australia
- Rheumatology Department, Royal North Shore Hospital, Reserve Road, St Leonards, NSW, 2065, Australia
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Yammine KM, Mirda Abularach S, Sampurno L, Bateman JF, Lamandé SR, Shoulders MD. Using CRISPR/Cas9 to generate a heterozygous COL2A1 p.R719C iPSC line (MCRIi019-A-6) model of human precocious osteoarthritis. Stem Cell Res 2023; 67:103020. [PMID: 36682125 PMCID: PMC10038005 DOI: 10.1016/j.scr.2023.103020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/14/2022] [Revised: 01/04/2023] [Accepted: 01/05/2023] [Indexed: 01/09/2023] Open
Abstract
The human iPSC line MCRIi019-A-6 was generated using CRISPR/Cas9-mediated gene editing to introduce a heterozygous COL2A1 exon 33 c.2155C>T (p.R719C) mutation into the control human iPSC line MCRIi019-A. Both the edited and parental lines display typical iPSC characteristics, including the expression of pluripotency markers, the ability to be differentiated into the three germ lines, and a normal karyotype. This cell line, along with the isogenic control line, can be used to study the molecular pathology of precocious osteoarthritis in a human model, more broadly understand type II collagenopathies, and explore novel therapeutic targets for this class of diseases.
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Affiliation(s)
- Kathryn M Yammine
- Department of Chemistry, Massachusetts Institute of Technology, United States
| | | | | | - John F Bateman
- Murdoch Children's Research Institute, Australia; Department of Paediatrics, University of Melbourne, Australia
| | - Shireen R Lamandé
- Murdoch Children's Research Institute, Australia; Department of Paediatrics, University of Melbourne, Australia
| | - Matthew D Shoulders
- Department of Chemistry, Massachusetts Institute of Technology, United States.
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Expanding the clinical spectrum of COL2A1 related disorders by a mass like phenotype. Sci Rep 2022; 12:4489. [PMID: 35296718 PMCID: PMC8927422 DOI: 10.1038/s41598-022-08476-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2021] [Accepted: 03/04/2022] [Indexed: 11/16/2022] Open
Abstract
MASS phenotype is a connective tissue disorder clinically overlapping with Marfan syndrome and caused by pathogenic variants in FBN1. We report four patients from three families presenting with a MASS-like phenotype consisting of tall stature, arachnodactyly, spinal deformations, dural ectasia, pectus and/or feet deformations, osteoarthritis, and/or high arched palate. Gene panel sequencing was negative for FBN1 variants. However, it revealed likely pathogenic missense variants in three individuals [c.3936G > T p.(Lys1312Asn), c.193G > A p.(Asp65Asn)] and a missense variant of unknown significance in the fourth patient [c.4013G > A p.(Ser1338Asn)] in propeptide coding regions of COL2A1. Pathogenic COL2A1 variants are associated with type II collagenopathies comprising a remarkable clinical variablility. Main features include skeletal dysplasia, ocular anomalies, and auditory defects. A MASS-like phenotype has not been associated with COL2A1 variants before. Thus, the identification of likely pathogenic COL2A1 variants in our patients expands the phenotypic spectrum of type II collagenopathies and suggests that a MASS-like phenotype can be assigned to various hereditary disorders of connective tissue. We compare the phenotypes of our patients with related disorders of connective tissue and discuss possible pathomechanisms and genotype–phenotype correlations for the identified COL2A1 variants. Our data recommend COL2A1 sequencing in FBN1-negative patients suggestive for MASS/Marfan-like phenotype (without aortopathy).
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Xie K, Pan X, Huang F, Ma Y, Qi Y, Wu J, Ma Z, Li X, Liang H, Wang S, Lei Z, Tao J, Zhu H, Chen Z. Needle knife therapy plus sodium hyaluronate injection for knee osteoarthritis: A protocol for a systematic review and meta-analysis. Medicine (Baltimore) 2020; 99:e23242. [PMID: 33181712 PMCID: PMC7668485 DOI: 10.1097/md.0000000000023242] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
BACKGROUND Knee osteoarthritis (KOA) is a worldwide disease and more and more people are suffered from it. With the increasing number of patients, it brings a huge burden on social economy and security system. There are varieties of methods to cure KOA, such as Traditional Chinese Medicine and surgery. Needle knife therapy plus Sodium hyaluronate Injection is one of the prevalent treatments for KOA. Therefore, we perform a systematic review and meta-analysis to evaluate the evidence for the treatment of needle knife therapy plus sodium hyaluronate Injection. METHODS Randomized controlled trials will be used to compare the effect of needle knife therapy plus sodium hyaluronate injection with needle knife alone for KOA patients. Six studies will be included in this meta-analysis, and the relative risk and weight mean difference with 95% CI for the Lysholm knee score, visual analogue scale, and effective rate will be evaluated by using RevMan 5.3 software. Besides, the bias assessment of the included studies will be evaluated using the Cochrane risk of bias tool, and the Grading of Recommendations, Assessment Development, and Evaluation system will be applied to assess the overall quality of the evidence. RESULTS From the study we will assess the effectiveness, safety of needle knife therapy plus sodium hyaluronate injection on joint pain relief and functional improvement in patients with KOA. CONCLUSION The study will provide a new evidence to confirm the effect of needle knife therapy plus sodium hyaluronate injection on KOA, which can further guide the selection of therapy. PROSPERO REGISTRATION NUMBER CRD42020169602.
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Handa A, Grigelioniene G, Nishimura G. Radiologic Features of Type II and Type XI Collagenopathies. Radiographics 2020; 41:192-209. [PMID: 33186059 DOI: 10.1148/rg.2021200075] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Type II collagen is a major component of the cartilage matrix. Pathogenic variants (ie, disease-causing aberrations) in the type II collagen gene (COL2A1) lead to an abnormal structure of type II collagen, causing a large group of skeletal dysplasias termed type II collagenopathies. Because type II collagen is also located in the vitreous body of the eyes and inner ears, type II collagenopathies are commonly associated with vitreoretinal degeneration and hearing impairment. Type II collagenopathies can be radiologically divided into two major groups: the spondyloepiphyseal dysplasia congenita (SEDC) group and the Kniest-Stickler group. The SEDC group is characterized by delayed ossification of the juxtatruncal bones, including pear-shaped vertebrae. These collagenopathies comprise achondrogenesis type 2, hypochondrogenesis, SEDC, and other uncommon subtypes. The Kniest-Stickler group is characterized by disordered tubular bone growth that leads to "dumbbell" deformities. It comprises Kniest dysplasia and Stickler dysplasia type 1, whose radiographic manifestations overlap with those of type XI collagenopathies (a group of disorders due to abnormal type XI collagen) such as Stickler dysplasia types 2 and 3. This phenotypic overlap is caused by type II and type XI collagen molecules sharing part of the same connective tissues. The authors describe the diagnostic pathways to type II and type XI collagenopathies and the associated differential diagnoses. In addition, they review the clinical features and genetic bases of these conditions, which radiologists should know to participate in multidisciplinary care and translational research. Online supplemental material is available for this article. ©RSNA, 2020.
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Affiliation(s)
- Atsuhiko Handa
- From the Department of Radiology, University of Iowa Hospitals and Clinics, 200 Hawkins Dr, Iowa City, IA 52242 (A.H.); Department of Molecular Medicine and Surgery, Center for Molecular Medicine, Karolinska Institutet and Department of Clinical Genetics, Karolinska University Hospital, Stockholm, Sweden (G.G.); and Center for Intractable Diseases, Saitama Medical University Hospital, Saitama, Japan (G.N.)
| | - Giedre Grigelioniene
- From the Department of Radiology, University of Iowa Hospitals and Clinics, 200 Hawkins Dr, Iowa City, IA 52242 (A.H.); Department of Molecular Medicine and Surgery, Center for Molecular Medicine, Karolinska Institutet and Department of Clinical Genetics, Karolinska University Hospital, Stockholm, Sweden (G.G.); and Center for Intractable Diseases, Saitama Medical University Hospital, Saitama, Japan (G.N.)
| | - Gen Nishimura
- From the Department of Radiology, University of Iowa Hospitals and Clinics, 200 Hawkins Dr, Iowa City, IA 52242 (A.H.); Department of Molecular Medicine and Surgery, Center for Molecular Medicine, Karolinska Institutet and Department of Clinical Genetics, Karolinska University Hospital, Stockholm, Sweden (G.G.); and Center for Intractable Diseases, Saitama Medical University Hospital, Saitama, Japan (G.N.)
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Arseni L, Lombardi A, Orioli D. From Structure to Phenotype: Impact of Collagen Alterations on Human Health. Int J Mol Sci 2018; 19:ijms19051407. [PMID: 29738498 PMCID: PMC5983607 DOI: 10.3390/ijms19051407] [Citation(s) in RCA: 86] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2018] [Revised: 04/29/2018] [Accepted: 05/04/2018] [Indexed: 01/04/2023] Open
Abstract
The extracellular matrix (ECM) is a highly dynamic and heterogeneous structure that plays multiple roles in living organisms. Its integrity and homeostasis are crucial for normal tissue development and organ physiology. Loss or alteration of ECM components turns towards a disease outcome. In this review, we provide a general overview of ECM components with a special focus on collagens, the most abundant and diverse ECM molecules. We discuss the different functions of the ECM including its impact on cell proliferation, migration and differentiation by highlighting the relevance of the bidirectional cross-talk between the matrix and surrounding cells. By systematically reviewing all the hereditary disorders associated to altered collagen structure or resulting in excessive collagen degradation, we point to the functional relevance of the collagen and therefore of the ECM elements for human health. Moreover, the large overlapping spectrum of clinical features of the collagen-related disorders makes in some cases the patient clinical diagnosis very difficult. A better understanding of ECM complexity and molecular mechanisms regulating the expression and functions of the various ECM elements will be fundamental to fully recognize the different clinical entities.
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Affiliation(s)
- Lavinia Arseni
- Department of Molecular Genetics, German Cancer Research Center (DKFZ), 69120 Heidelberg, Germany.
| | - Anita Lombardi
- Istituto di Genetica Molecolare, Consiglio Nazionale delle Ricerche, 27100 Pavia, Italy.
| | - Donata Orioli
- Istituto di Genetica Molecolare, Consiglio Nazionale delle Ricerche, 27100 Pavia, Italy.
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Li H, Zhang X, Cao Y, Hu S, Peng F, Zhou J, Li J. Association between EN1 rs4144782 and susceptibility of knee osteoarthritis: A case-control study. Oncotarget 2018; 8:36650-36657. [PMID: 28430581 PMCID: PMC5482684 DOI: 10.18632/oncotarget.16842] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2016] [Accepted: 03/10/2017] [Indexed: 11/25/2022] Open
Abstract
Osteoarthritis (OA) is a complex disease that affects the whole joint, resulting from the combined influence of biomechanical factors and genetic factors. The heritable component for primary OA accounts for about 60% of variation in population liability to the disease. So far, genome-wide association studies (GWAS) and candidate gene studies have established many OA-related loci. However, these findings account for only a rather small fraction of the genetic component. To further reveal the genetic architecture of OA, we conducted this case-control study to explore the association of locus EN1 rs4144782 and knee OA susceptibility in a Chinese population. EN1 rs4144782 was significantly associated with increased risk of knee OA (OR=1.26; 95% CI: 1.05-1.50, P value=0.012). In dominant model, compared with carriers of GG genotype, those with AG or AA genotype have an 1.44-fold increased risk of OA (OR: 1.44; 95% CI: 1.10-1.88; P value=0.008). Subgroup analyses didn't change the results materially. This should be the first association study of EN1 locus on risk of OA, and our finding suggested that the EN1 rs4144782 might contribute to the susceptibility of knee OA.
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Affiliation(s)
- Haohuan Li
- Department of Orthopedics, Renmin Hospital of Wuhan University, Wuhan, 430060, China
| | - Xiaolong Zhang
- Department of Orthopedics, Renmin Hospital of Wuhan University, Wuhan, 430060, China
| | - Yiping Cao
- Key Laboratory of Optoelectronic Chemical Materials and Devices, Ministry of Education, Jianghan University, Wuhan, 430056, China
| | - Song Hu
- Department of Physiology, Jianghan University, Wuhan Medical College, Wuhan, 430056, China
| | - Fei Peng
- Department of Orthopedics, Renmin Hospital of Wuhan University, Wuhan, 430060, China
| | - Jianlin Zhou
- Department of Orthopedics, Renmin Hospital of Wuhan University, Wuhan, 430060, China
| | - Jianping Li
- Department of Orthopedics, Renmin Hospital of Wuhan University, Wuhan, 430060, China
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Gari MA, AlKaff M, Alsehli HS, Dallol A, Gari A, Abu-Elmagd M, Kadam R, Abuzinadah MF, Gari M, Abuzenadah AM, Gauthaman K, Alkhatabi H, Abbas MM. Identification of novel genetic variations affecting osteoarthritis patients. BMC MEDICAL GENETICS 2016; 17:68. [PMID: 27766954 PMCID: PMC5073985 DOI: 10.1186/s12881-016-0330-2] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Background Osteoarthritis (OA) is a progressive joint disease characterized by gradual degradation of extracellular matrix (ECM) components in the cartilage and bone. The ECM of cartilage is a highly specified structure that is mainly composed of type II collagen and provides tensile strength to the tissue via aggrecan and proteoglycans. However, changes in the ECM composition and structure can lead to loss of collagen type II and network integrity. Several risk factors have been correlated with OA including age, genetic predisposition, hereditary factors, obesity, mechanical injuries, and joint trauma. Certain genetic association studies have identified several genes associated with OA using genome-wide association studies (GWASs). Results We identified several novel genetic variants affecting genes that function in several candidate causative pathways including immune responses, inflammatory and cartilage degradation such as SELP, SPN, and COL6A6. Conclusions The approach of whole-exome sequencing can be a promising method to identify genetic mutations that can influence the OA disease.
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Affiliation(s)
- Mamdooh Abdullah Gari
- Sheikh Salem Bin Mahfouz Scientific Chair for Treatment of Osteoarthritis by Stem Cells, King Abdulaziz University, Jeddah, Kingdom of Saudi Arabia. .,Center of Innovation in Personalized Medicine, King Abdulaziz University, Jeddah, Kingdom of Saudi Arabia. .,Department of Medical Laboratory Technology, Faculty of Applied Medical Sciences, King Abdulaziz University, P.O. Box 80216, Jeddah, 21589, Kingdom of Saudi Arabia.
| | - Mohammed AlKaff
- Sheikh Salem Bin Mahfouz Scientific Chair for Treatment of Osteoarthritis by Stem Cells, King Abdulaziz University, Jeddah, Kingdom of Saudi Arabia.,Department of Orthopedic Surgery, Faculty of Medicine, King Abdulaziz University, Jeddah, Kingdom of Saudi Arabia
| | - Haneen S Alsehli
- Sheikh Salem Bin Mahfouz Scientific Chair for Treatment of Osteoarthritis by Stem Cells, King Abdulaziz University, Jeddah, Kingdom of Saudi Arabia.,Center of Innovation in Personalized Medicine, King Abdulaziz University, Jeddah, Kingdom of Saudi Arabia
| | - Ashraf Dallol
- Center of Innovation in Personalized Medicine, King Abdulaziz University, Jeddah, Kingdom of Saudi Arabia
| | - Abdullah Gari
- Center of Innovation in Personalized Medicine, King Abdulaziz University, Jeddah, Kingdom of Saudi Arabia.,Department of Hematology, Faculty of Medicine, King Abdulaziz University Hospital, King Abdulaziz University, Jeddah, Kingdom of Saudi Arabia
| | - Muhammad Abu-Elmagd
- Centre of Excellence in Genomic Medicine Research, King Abdulaziz University, Jeddah, Kingdom of Saudi Arabia
| | - Roaa Kadam
- Centre of Excellence in Genomic Medicine Research, King Abdulaziz University, Jeddah, Kingdom of Saudi Arabia
| | - Mohammed F Abuzinadah
- Center of Innovation in Personalized Medicine, King Abdulaziz University, Jeddah, Kingdom of Saudi Arabia.,Department of Medical Laboratory Technology, Faculty of Applied Medical Sciences, King Abdulaziz University, P.O. Box 80216, Jeddah, 21589, Kingdom of Saudi Arabia
| | - Mazin Gari
- Center of Innovation in Personalized Medicine, King Abdulaziz University, Jeddah, Kingdom of Saudi Arabia
| | - Adel M Abuzenadah
- Center of Innovation in Personalized Medicine, King Abdulaziz University, Jeddah, Kingdom of Saudi Arabia.,Department of Medical Laboratory Technology, Faculty of Applied Medical Sciences, King Abdulaziz University, P.O. Box 80216, Jeddah, 21589, Kingdom of Saudi Arabia
| | - Kalamegam Gauthaman
- Sheikh Salem Bin Mahfouz Scientific Chair for Treatment of Osteoarthritis by Stem Cells, King Abdulaziz University, Jeddah, Kingdom of Saudi Arabia.,Centre of Excellence in Genomic Medicine Research, King Abdulaziz University, Jeddah, Kingdom of Saudi Arabia
| | - Heba Alkhatabi
- Centre of Excellence in Genomic Medicine Research, King Abdulaziz University, Jeddah, Kingdom of Saudi Arabia.,Department of Medical Laboratory Technology, Faculty of Applied Medical Sciences, King Abdulaziz University, P.O. Box 80216, Jeddah, 21589, Kingdom of Saudi Arabia
| | - Mohammed M Abbas
- Sheikh Salem Bin Mahfouz Scientific Chair for Treatment of Osteoarthritis by Stem Cells, King Abdulaziz University, Jeddah, Kingdom of Saudi Arabia.,Department of Orthopedic Surgery, Faculty of Medicine, King Abdulaziz University, Jeddah, Kingdom of Saudi Arabia
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Deng H, Huang X, Yuan L. Molecular genetics of the COL2A1-related disorders. MUTATION RESEARCH-REVIEWS IN MUTATION RESEARCH 2016; 768:1-13. [PMID: 27234559 DOI: 10.1016/j.mrrev.2016.02.003] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/19/2015] [Revised: 01/08/2016] [Accepted: 02/23/2016] [Indexed: 12/16/2022]
Abstract
Type II collagen, comprised of three identical alpha-1(II) chains, is the major collagen synthesized by chondrocytes, and is found in articular cartilage, vitreous humour, inner ear and nucleus pulposus. Mutations in the collagen type II alpha-1 gene (COL2A1) have been reported to be responsible for a series of abnormalities, known as type II collagenopathies. To date, 16 definite disorders, inherited in an autosomal dominant or recessive pattern, have been described to be associated with the COL2A1 mutations, and at least 405 mutations ranging from point mutations to complex rearrangements have been reported, though the underlying pathogenesis remains unclear. Significant clinical heterogeneity has been reported in COL2A1-associated type II collagenopathies. In this review, we highlight current knowledge of known mutations in the COL2A1 gene for these disorders, as well as genetic animal models related to the COL2A1 gene, which may help us understand the nature of complex phenotypes and underlying pathogenesis of these conditions.
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Affiliation(s)
- Hao Deng
- Center for Experimental Medicine and Department of Neurology, the Third Xiangya Hospital, Central South University, Changsha 410013, China.
| | - Xiangjun Huang
- Center for Experimental Medicine and Department of Neurology, the Third Xiangya Hospital, Central South University, Changsha 410013, China
| | - Lamei Yuan
- Center for Experimental Medicine and Department of Neurology, the Third Xiangya Hospital, Central South University, Changsha 410013, China
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11
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Aury-Landas J, Marcelli C, Leclercq S, Boumédiene K, Baugé C. Genetic Determinism of Primary Early-Onset Osteoarthritis. Trends Mol Med 2016; 22:38-52. [DOI: 10.1016/j.molmed.2015.11.006] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2015] [Revised: 11/13/2015] [Accepted: 11/16/2015] [Indexed: 12/22/2022]
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12
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Zhang M, Egan B, Wang J. Epigenetic mechanisms underlying the aberrant catabolic and anabolic activities of osteoarthritic chondrocytes. Int J Biochem Cell Biol 2015; 67:101-9. [PMID: 25975825 DOI: 10.1016/j.biocel.2015.04.019] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2015] [Revised: 04/27/2015] [Accepted: 04/29/2015] [Indexed: 12/21/2022]
Abstract
The development of disease-modifying pharmacologic therapy for osteoarthritis currently faces major obstacles largely because the pathogenetic mechanisms for the development of osteoarthritis remain unclear. Previous studies suggest that the alterations in expression of catabolic and anabolic genes in articular chondrocytes may be involved in the pathogenesis of osteoarthritis. However, the regulatory mechanisms for gene expression in osteoarthritic chondrocytes are largely unknown. The objective of this review is to highlight the recent studies on epigenetic regulation of gene expression in the development of osteoarthritis. The review will begin with current understanding of epigenetic mechanisms, especially the newly emerging areas including the regulatory role of non-coding RNAs in gene expression and crosstalk among the epigenetic mechanisms. The main content of this review focuses on the significance of epigenetic regulation of the expression of catabolic and anabolic genes in osteoarthritic chondrocytes, including the regulatory roles of various epigenetic mechanisms in the expression of genes for specific matrix-degrading proteinases, cytokines, and extracellular matrix proteins. Recent novel findings on the epigenetic regulation of specific transcription factor genes are particularly important for the understanding of osteoarthritis pathogenesis, as these transcription factors may act as upstream regulators of multiple catabolic and anabolic genes. In conclusion, these recent advances in epigenetic studies have shed light on the importance of epigenetic regulation of gene expression in the development of osteoarthritis, leading to a better understanding of the epigenetic mechanisms underlying the pathogenesis of osteoarthritis. This may promote the development of new epigenetics-based strategies for the treatment of osteoarthritis. This article is part of a Directed Issue entitled: Epigenetics dynamics in development and disease.
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Affiliation(s)
- Mingcai Zhang
- Harrington Laboratory for Molecular Orthopedics, Department of Orthopedic Surgery, Kansas City, Kansas, USA
| | - Brian Egan
- Harrington Laboratory for Molecular Orthopedics, Department of Orthopedic Surgery, Kansas City, Kansas, USA
| | - Jinxi Wang
- Harrington Laboratory for Molecular Orthopedics, Department of Orthopedic Surgery, Kansas City, Kansas, USA; Department of Biochemistry & Molecular Biology, University of Kansas Medical Center, Kansas City, Kansas, USA.
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13
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Wang L, Pan H, Zhu ZA. A genetic pedigree analysis to identify gene mutations involved in femoral head necrosis. Mol Med Rep 2014; 10:1835-8. [PMID: 25050885 DOI: 10.3892/mmr.2014.2410] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2013] [Accepted: 12/26/2013] [Indexed: 02/03/2023] Open
Abstract
The present study presents results from a linkage and mutation screening analysis aiming to identify the causative gene of femoral head necrosis, also known as osteonecrosis of femoral head (ONFH), in a Chinese pedigree. We collected clinical data on the osteonecrosis pedigree, and extracted blood and genomic DNA from the family members. Polymerase chain reaction (PCR) and direct sequencing allowed to identify a mutation in the COL2A1 gene of the proband; the clinical manifestations of the proband meet the criteria for osteonecrosis. The exons of COL2A1 were amplified by polymerase chain reaction and mutation screening was conducted by direct sequencing in all the family members. The locus was also sequenced in 50 unrelated healthy controls. The c.3665G>A heterozygous mutation was detected in patients of the pedigree, but not in healthy individuals. We conclude that a mutation in the COL2A1 gene is the causative agent of ONFH in this family. Therefore, this mutation may be associated with osteonecrosis in Chinese populations.
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Affiliation(s)
- Lin Wang
- Department of Orthopaedics, Shanghai Ninth People's Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200012, P.R. China
| | - Hehai Pan
- Department of Orthopaedics, The First Affiliated Hospital of Sun Yat‑sen University, Guangzhou, Guangdong 510080, P.R. China
| | - Zhen-An Zhu
- Department of Orthopaedics, Shanghai Ninth People's Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200012, P.R. China
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14
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Lajeunesse D, Massicotte F, Pelletier JP, Martel-Pelletier J. Subchondral bone sclerosis in osteoarthritis: not just an innocent bystander. Mod Rheumatol 2014; 13:7-14. [PMID: 24387110 DOI: 10.3109/s101650300001] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Abstract Osteoarthritis (OA) is considered to be a complex illness in which the tissues of the joint play a significant role in the initiation and/or progression of the pathophysiology. We still do not completely understand what initiates the degradation and loss of cartilage. However, it has been suggested that increased catabolism due to elevated cytokines and growth factors in OA joints plays a significant role. Recent evidence suggests a key role for the subchondral bone tissue in the progression and/or initiation of OA. Indeed, the subchondral bone tissue produces a number of similar proinflammatory cytokines, and growth factors are involved in cartilage tissue remodeling. Interestingly, studies have shown the presence of clefts or channels in the tidemark that appears early in OA, indicating a possible way to traffic cytokines and growth factors from the subchondral compartment to the overlying cartilage. Therefore, it is possible that certain bone-derived products drive cartilage metabolism. Potential candidates include insulin-like growth factor-1 (IGF-1), transforming growth factor-β (TGF-β) interleukin 1β (IL-1β), and interleukin-6 (IL-6). Demonstrating that the subchondral bone plays a role in the initiation of OA would greatly contribute to furthering our knowledge of this pathology and provide new insights for therapeutic approaches.
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Affiliation(s)
- D Lajeunesse
- Unité de recherche en Arthrose, Centre Hospitalier de l'Université de Montréal, Hôpital Notre-Dame , 1560 rue Sherbrooke Est, Montréal, Québec H2L 4M1 , Canada
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15
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Colombini A, Cauci S, Lombardi G, Lanteri P, Croiset S, Brayda-Bruno M, Banfi G. Relationship between vitamin D receptor gene (VDR) polymorphisms, vitamin D status, osteoarthritis and intervertebral disc degeneration. J Steroid Biochem Mol Biol 2013; 138:24-40. [PMID: 23500379 DOI: 10.1016/j.jsbmb.2013.03.001] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/05/2012] [Revised: 02/26/2013] [Accepted: 03/01/2013] [Indexed: 02/07/2023]
Abstract
The vitamin D endocrine system is involved in bony and cartilaginous metabolisms and alterations in the homeostasis of this system could be associated to pathological conditions of cartilaginous tissue. In this context, the presence of polymorphisms in the vitamin D receptor gene (VDR), in association with the susceptibility to common osteochondral diseases, was largely investigated. The aim of this review was to summarize data present in literature, analyzing the association of the VDR polymorphisms, vitamin D status and knee cartilage and intervertebral disc pathologies, trying to suggest links between the different specific pathologies analyzed. Concerning the association between VDR polymorphisms and cartilaginous tissue diseases, we found controversial reports. However, the great majority of papers reported an association with lumbar disc degeneration, whereas about half of the studies found an association with osteoarthritis. A further association between VDR polymorphisms (in linkage disequilibrium) and the presence of specific characteristics of these diseases, in particular the formation of osteophytes, was evidenced. Finally, the influence of vitamin D status on these pathologies was evaluated, trying to evidence the relation between the presence of particular genetic variants in the VDR and vitamin D levels or to show whether a particular vitamin D status could predispose to the development or progression of such diseases, however, no significant associations were found. In the future, given the role of vitamin D system in the cartilaginous tissue metabolism, it could be interesting to perform functional and tissue specific studies to analyze the interplay between the different VDR variants and its ligand.
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Affiliation(s)
- Alessandra Colombini
- Laboratory of Experimental Biochemistry and Molecular Biology, I.R.C.C.S. Istituto Ortopedico Galeazzi, Milano, Italy.
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16
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Abstract
Osteoarthritis (OA) has a considerable hereditary component and is considered to be a polygenic disease. Data derived from genetic analyses and genome-wide screening of individuals with this disease have revealed a surprising trend: genes associated with OA tend to be related to the process of synovial joint development. Mutations in these genes might directly cause OA. In addition, they could also determine the age at which OA becomes apparent, the joint sites involved, the severity of the disease and how rapidly it progresses. In this Review, I propose that genetic mutations associated with OA can be placed on a continuum. Early-onset OA is caused by mutations in matrix molecules often associated with chondrodysplasias, whereas less destructive structural abnormalities or mutations confer increased susceptibility to injury or malalignment that can result in middle-age onset. Finally, mutations in molecules that regulate subtle aspects of joint development and structure lead to late-onset OA. In this Review, I discuss the genetics of OA in general, but focus on the potential effect of genetic mutations associated with OA on joint structure, the role of joint structure in the development of OA--using hip abnormalities as a model--and how understanding the etiology of the disease could influence treatment.
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17
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Mu SC, Lin YJ, Liu HC, Wu JY, Li SC, Michael Lee MT, Chou CH, Chen LK, Chen YT. A mutation in cartilage oligomeric matrix protein (COMP) causes early-onset osteoarthritis in a large kindred study. Ann Hum Genet 2011; 75:575-83. [PMID: 21834907 DOI: 10.1111/j.1469-1809.2011.00667.x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
We performed a genome-wide linkage analysis to identify susceptibility loci in a large six-generation extended family previously reported with early-onset osteoarthritis (OA) DNA sequencing was performed to investigate involvement of the COMP (Cartilage oligomeric matrix protein) gene in this family. The region covering D19S884, D19S226, and D19S414 on chromosome 19p following genome-wide scan from 70 individuals of this kindred showed significant linkage, with a maximum point LOD (logarithm of the odds ratio) score of 2.51 at D19S226. Direct sequencing of the COMP gene, the most plausible candidate gene in the region, identified a c.2152C>T substitution in exon 18 which resulted in a substitution of tryptophan for arginine at position 718 located in the C terminal globular domain of the gene product. A total of 26 individuals were identified with this mutation of which 21 affected individuals had the mutation, and the other five younger individuals (18.6 ± 11.3 years of age) carried the mutation without symptoms. The results indicate that COMP is the disease susceptibility gene and the c.2152C>T mutation in exon 18 could cause early-onset OA phenotypes in this kindred, which is compatible with a previous report that this mutation also causes a mild form of multiple epiphyseal dysplasia (MED).
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Affiliation(s)
- Shu-Chi Mu
- Institute of Clinical Medicine, National Yang-Ming University, Taipei, Taiwan
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18
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Jensen DA, Steplewski A, Gawron K, Fertala A. Persistence of intracellular and extracellular changes after incompletely suppressing expression of the R789C (p.R989C) and R992C (p.R1192C) collagen II mutants. Hum Mutat 2011; 32:794-805. [PMID: 21472893 DOI: 10.1002/humu.21506] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2011] [Accepted: 03/23/2011] [Indexed: 11/06/2022]
Abstract
Mutations in COL2A1 produce a spectrum of disorders whose hallmark feature is alterations in skeletal development. Attempts to counteract the effects of collagen mutations at the molecular level have been relatively ineffective due to the inability to selectively suppress a mutant allele, and failure to deliver a sufficient number of cells expressing wild-type collagen. Moreover, these approaches are hampered because the minimal therapeutic conditions that would allow extracellular matrix remodeling and recovery of cells from stress are not known. Here, we employed a tetracycline-inducible system for expressing the R789C or R992C collagen II mutants, allowing us to decrease the production of mutant proteins by 25, 50, 75, or 100% with respect to their initial production. Through analysis of intracellular and extracellular parameters we have shown that affected cell/matrix systems are able to recover from mutation-induced aberrations only when 100% expression of mutant collagens is shut off, but not if the expression of small amounts of mutant molecules persists in the system. Our data suggest that efficient remodeling of tissues affected by the presence of thermolabile collagen mutants may depend on their complete elimination rather than on partial reduction.
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Affiliation(s)
- Deborah A Jensen
- Department of Dermatology and Cutaneous Biology, Jefferson Medical College, Thomas Jefferson University, 233 S. 10th Street, Philadelphia, PA 19107, USA
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19
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Williams FM, Zhai G, Spector TD. Genetics of osteoarthritis. Rheumatology (Oxford) 2011. [DOI: 10.1016/b978-0-323-06551-1.00174-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022] Open
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20
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Eames BF, Singer A, Smith GA, Wood ZA, Yan YL, He X, Polizzi SJ, Catchen JM, Rodriguez-Mari A, Linbo T, Raible DW, Postlethwait JH. UDP xylose synthase 1 is required for morphogenesis and histogenesis of the craniofacial skeleton. Dev Biol 2010; 341:400-15. [PMID: 20226781 DOI: 10.1016/j.ydbio.2010.02.035] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2009] [Revised: 02/13/2010] [Accepted: 02/24/2010] [Indexed: 11/20/2022]
Abstract
UDP-xylose synthase (Uxs1) is strongly conserved from bacteria to humans, but because no mutation has been studied in any animal, we do not understand its roles in development. Furthermore, no crystal structure has been published. Uxs1 synthesizes UDP-xylose, which initiates glycosaminoglycan attachment to a protein core during proteoglycan formation. Crystal structure and biochemical analyses revealed that an R233H substitution mutation in zebrafish uxs1 alters an arginine buried in the dimer interface, thereby destabilizing and, as enzyme assays show, inactivating the enzyme. Homozygous uxs1 mutants lack Alcian blue-positive, proteoglycan-rich extracellular matrix in cartilages of the neurocranium, pharyngeal arches, and pectoral girdle. Transcripts for uxs1 localize to skeletal domains at hatching. GFP-labeled neural crest cells revealed defective organization and morphogenesis of chondrocytes, perichondrium, and bone in uxs1 mutants. Proteoglycans were dramatically reduced and defectively localized in uxs1 mutants. Although col2a1a transcripts over-accumulated in uxs1 mutants, diminished quantities of Col2a1 protein suggested a role for proteoglycans in collagen secretion or localization. Expression of col10a1, indian hedgehog, and patched was disrupted in mutants, reflecting improper chondrocyte/perichondrium signaling. Up-regulation of sox9a, sox9b, and runx2b in mutants suggested a molecular mechanism consistent with a role for proteoglycans in regulating skeletal cell fate. Together, our data reveal time-dependent changes to gene expression in uxs1 mutants that support a signaling role for proteoglycans during at least two distinct phases of skeletal development. These investigations are the first to examine the effect of mutation on the structure and function of Uxs1 protein in any vertebrate embryos, and reveal that Uxs1 activity is essential for the production and organization of skeletal extracellular matrix, with consequent effects on cartilage, perichondral, and bone morphogenesis.
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Affiliation(s)
- B Frank Eames
- Institute of Neuroscience, 1254 University of Oregon, Eugene OR 97403-1254, USA.
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21
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Sofat N. Analysing the role of endogenous matrix molecules in the development of osteoarthritis. Int J Exp Pathol 2009; 90:463-79. [PMID: 19765101 DOI: 10.1111/j.1365-2613.2009.00676.x] [Citation(s) in RCA: 78] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023] Open
Abstract
Osteoarthritis (OA) is the most common form of arthritis worldwide. In this condition, damage to the extracellular matrix (ECM) of cartilage occurs, resulting in joint destruction. Factors mediating cartilage damage include mechanical injury, cytokine and superoxide release on a background of genetic susceptibility and obesity. Studies of arthritic cartilage show increased production of ECM molecules including type II collagen, cartilage oligomeric matrix protein, fibronectin (FN) and fibromodulin. Recent reports suggest that ECM proteins may become endogenous catabolic factors during joint damage. Activation of pro-inflammatory pathways by ECM proteins has led to their description as damage-associated molecular patterns (DAMPs). The ECM proteins involved include fibromodulin, which activates the complement pathway and may promote the persistence of joint inflammation. Fragmentation of type II collagen, FN and hyaluronan reveals cryptic epitopes that stimulate proteolytic enzymes including matrix metalloproteinases and aggrecanases (ADAMTSs - a disintegrin and metalloproteinase with thrombospondin type 1 motifs). Proteolytic fragments also stimulate the release of nitric oxide, chemokines and cytokines and activation of the MAP kinases. Reports are emerging that the receptors for the fragments described involve interaction with integrins and toll-like receptors. In this review the contribution of endogenous ECM molecules to joint destruction will be discussed. A deeper understanding of the pathways stimulated by endogenous ligands could offer potential avenues for novel therapies in the future.
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23
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Chung HJ, Jensen DA, Gawron K, Steplewski A, Fertala A. R992C (p.R1192C) Substitution in collagen II alters the structure of mutant molecules and induces the unfolded protein response. J Mol Biol 2009; 390:306-18. [PMID: 19433093 PMCID: PMC2749300 DOI: 10.1016/j.jmb.2009.05.004] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2008] [Revised: 04/30/2009] [Accepted: 05/05/2009] [Indexed: 11/18/2022]
Abstract
We investigated the molecular bases of spondyloepiphyseal dysplasia (SED) associated with the R992C (p.R1192C) substitution in collagen II. At the protein level, we analyzed the structure and integrity of mutant molecules, and at the cellular level, we specifically studied the effects of the presence of the R992C collagen II on the biological processes taking place in host cells. Our studies demonstrated that mutant collagen II molecules were characterized by altered electrophoretic mobility, relatively low thermostability, the presence of atypical disulfide bonds, and slow rates of secretion into the extracellular space. Analyses of cellular responses to the presence of the mutant molecules showed that excessive accumulation of thermolabile collagen II was associated with the activation of an "unfolded protein response" and an increase in apoptosis of host cells. Collectively, these data suggest that molecular mechanisms of SED may be driven not only by structural changes in the architecture of extracellular collagenous matrices, but also by intracellular processes activated by the presence of mutant collagen II molecules.
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Affiliation(s)
- Hye Jin Chung
- Department of Dermatology and Cutaneous Biology, Thomas Jefferson University, Philadelphia, PA 19107, USA
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24
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Herrero-Beaumont G, Roman-Blas JA, Castañeda S, Jimenez SA. Primary osteoarthritis no longer primary: three subsets with distinct etiological, clinical, and therapeutic characteristics. Semin Arthritis Rheum 2009; 39:71-80. [PMID: 19589561 DOI: 10.1016/j.semarthrit.2009.03.006] [Citation(s) in RCA: 86] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2008] [Revised: 02/27/2009] [Accepted: 03/31/2009] [Indexed: 12/19/2022]
Abstract
BACKGROUND Osteoarthritis (OA) has been historically divided into primary and secondary. Primary OA has been defined as an idiopathic condition developing in previously undamaged joints in the absence of an obvious causative mechanism. During the last few years a large amount of evidence has provided new insights into the biochemistry and molecular biology of cartilage, subchondral bone, and other articular tissues, which suggest distinct etiopathogenetic mechanisms in some forms of primary OA. OBJECTIVE To propose an etiopathogenic classification of primary OA in the light of the significant progress in the understanding of the disease. METHODS A review of the literature was performed by searching the Medline and PubMed databases from 1952 to November 2008 using the following keywords: genetic alteration, heritability, estrogen, menopause, and aging either alone or in various combinations with joint, cartilage, subchondral bone, synovium, ligaments, muscle, tendons, OA, and osteoporosis. RESULTS Numerous studies have shown that genetic alterations, menopause-related estrogen deficiency, and aging play crucial roles in the molecular pathophysiological events involved in the process of cartilage and joint damage and thus in development of OA. We propose classifying primary OA into 3 distinct although interrelated subsets: type I OA, genetically determined; type II OA, estrogen hormone dependent; and type III OA, aging related. CONCLUSIONS The 3 proposed subsets of OA display distinct etiological, clinical, and therapeutic characteristics and should therefore no longer be considered to be "Primary OA."
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Affiliation(s)
- Gabriel Herrero-Beaumont
- Bone and Joint Research Unit, Service of Rheumatology, Fundación Jiménez Díaz, Universidad Autónoma, Madrid, Spain.
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25
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Affiliation(s)
- Paul Dieppe
- Bristol University, Bristol Royal Infirmary, Rheumatology Unit, Marlborough St, Bristol, BS2 8HW, UK, +44-117 928 2983, +44-117 928 3841
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26
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Mu SC, Liu HC, Wu JY, Lee MTM, Chuang HP, Chen LK, Chen YT. A large kindred of early-onset osteoarthritis of the knee and hip: excluding the link to COL2A1 gene. Rheumatology (Oxford) 2009; 48:371-4. [PMID: 19223283 DOI: 10.1093/rheumatology/kep010] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
OBJECTIVES To characterize a large extended family with early-onset OA of the knee and investigate its associations with the COL2A1 gene. METHODS Phenotype assessments were conducted in a six-generation family to identify individuals affected with OA. Short tandem repeat polymorphic (STRP) markers and DNA sequencing were performed to investigate the involvement of the COL2A1 gene in this family. RESULTS The kindred affected with OA showed autosomal dominant inheritance. The mean age of onset was 37.3 +/- 19.2, 29.8 +/- 13.7 and 12.0 +/- 7.2 years for generations IV, V and VI, respectively, and 25 +/- 16.1 years for males and 34.3 +/- 15.5 years for females. The height of the affected males was shorter than the unaffected males (155.9 +/- 11.4 vs 164.5 +/- 16.0 cm, P = 0.010). Arm span in the affected males was also significantly shorter than the unaffected males (158.4 +/- 12.5 vs 165.3 +/- 16.7 cm, P = 0.027). However, both height and arm span were not reduced in the affected female OA patients. STRP markers surrounding COL2A1 locus did not show linkage of the COL2A1 locus with the OA. Sequencing of COL2A1 gene revealed three single nucleotide polymorphisms but no mutation was found in the affected patients. CONCLUSIONS The COL2A1 was not a susceptibility gene responsible for the OA phenotype in a large extended kindred with familial early-onset OA. The availability of DNA samples will allow genome-wide linkage study to identify the susceptibility locus.
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Affiliation(s)
- Shu-Chi Mu
- Institute of Clinical Medicine, National Yang-Ming University, Academia Sinica, Taipei, Taiwan
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27
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Abstract
Osteoarthritis (OA) is a chronic degenerative disorder characterized by cartilage loss. Its prevalence is high, and it is a major cause of disability. The cause of OA is not known; however, current evidence indicates that it is multifactorial. Major risk factors for osteoarthritis are age, female sex, obesity, geographic factors, occupational knee-bending, physical labour, genetic factors and race, joint trauma, vitamin D deficiency, and chondrocalcinosis. Osteoarthritis causes joint pain, stiffness, and limitation of joint function. Knee involvement is the commonest presentation of this disease all over the world. Given the absence of a curative treatment, it is important to treat osteoarthritis as effectively as possible using a multidisciplinary approach tailored to the patient's needs. This article reviews current thinking on the epidemiology, clinical presentation, lifestyle, genetic epidemiology, and management of osteoarthritis in developing countries.
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Abstract
Because of the implications for prevention and treatment, how a clinician views osteoarthritis (OA) matters. We view OA as an attempt to contain a mechanical problem in the joint and as failed repair of damage caused by excessive mechanical stress on the joint. OA is organ failure of the synovial joint. Because of insufficient focus on reduction of the habitually loaded contact area of the joint and on aberrant loading, we believe that therapeutic efforts aimed at pathogenetic mechanisms in OA have been misdirected: neither the large role that a reduction of excessive levels of mechanical stress plays in promoting the healing response in OA nor the evidence that relief of joint pain and improvement in function, rather than the appearance of the articular surface, are the most important outcomes of the healing process have been sufficiently emphasized. Various mechanical abnormalities can trigger the processes involved in repair and attempts by the joint to contain the mechanical insult, but without a return to mechanical normality, attempts at healing will fail. In our view, drugs may be helpful symptomatically, but cannot accomplish this. In our view, as long as the joint remains in the same adverse mechanical environment that got it into trouble in the first place, it is unlikely that a drug that inhibits a specific enzyme or cytokine in the pathways of cartilage breakdown, or further stimulates the already increased synthesis of cartilage matrix molecules will solve the problem of OA. Also, because the subchondral bone is critically important in containing the mechanical abnormalities that damage the cartilage, emphasis on cartilage repair alone is likely to be futile. On the other hand, if the abnormal stresses on the joint are corrected, intervention with a structure-modifying drug may be superfluous.
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Affiliation(s)
- Kenneth D Brandt
- Kansas University Medical Center, 5755 Windsor Drive, Fairway, Kansas City, KS 66205, USA.
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29
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30
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Hintze V, Steplewski A, Ito H, Jensen DA, Rodeck U, Fertala A. Cells expressing partially unfolded R789C/p.R989C type II procollagen mutant associated with spondyloepiphyseal dysplasia undergo apoptosis. Hum Mutat 2008; 29:841-51. [PMID: 18383211 DOI: 10.1002/humu.20736] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Vera Hintze
- Department of Dermatology and Cutaneous Biology, Jefferson Medical College, Thomas Jefferson University, Philadelphia, Pennsylvania 19107, USA
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31
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Li Y, Xu L, Olsen BR. Lessons from genetic forms of osteoarthritis for the pathogenesis of the disease. Osteoarthritis Cartilage 2007; 15:1101-5. [PMID: 17572112 PMCID: PMC2062521 DOI: 10.1016/j.joca.2007.04.013] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/24/2007] [Accepted: 04/24/2007] [Indexed: 02/02/2023]
Affiliation(s)
- Y Li
- Department of Developmental Biology, Harvard School of Dental Medicine, USA
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32
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Kloppenburg M, Stamm T, Watt I, Kainberger F, Cawston TE, Birrell FN, Petersson IF, Saxne T, Kvien TK, Slatkowsky-Christensen B, Dougados M, Gossec L, Breedveld FC, Smolen JS. Research in hand osteoarthritis: time for reappraisal and demand for new strategies. An opinion paper. Ann Rheum Dis 2007; 66:1157-61. [PMID: 17360780 PMCID: PMC1955144 DOI: 10.1136/ard.2007.070813] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/04/2007] [Indexed: 01/09/2023]
Abstract
BACKGROUND Osteoarthritis of the hands is a prevalent musculoskeletal disease with a considerable effect on patients' lives, but knowledge and research results in the field of hand osteoarthritis are limited. Therefore, the Disease Characteristics in Hand OA (DICHOA) initiative was founded in early 2005 with the aim of addressing key issues and facilitating research into hand osteoarthritis. OBJECTIVE To review and discuss current knowledge on hand osteoarthritis with regard to aetiopathogenesis, diagnostic criteria, biomarkers and clinical outcome measures. METHODS Recommendations were made based on a literature review. RESULTS Outcomes of hand osteoarthritis should be explored, including patient perspective on the separate components of disease activity, damage and functioning. All imaging techniques should be cross-validated for hand osteoarthritis with clinical status, including disease activity, function and performance, biomarkers and long-term outcome. New imaging modalities are available and need scoring systems and validation. The role of biomarkers in hand osteoarthritis has to be defined. CONCLUSION Future research in hand osteoarthritis is warranted.
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Affiliation(s)
- Margreet Kloppenburg
- Department of Rheumatology, Leiden University Medical Center, PO Box 9600, 2300 RC Leiden, The Netherlands.
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Abstract
Osteoarthritis, a debilitating joint disorder, is the most common form of arthritis in the United States, where it affects an estimated 21 million people. In 2004, the direct and indirect health care costs associated with all forms of arthritis were approximately 86 billion dollars. Joint discomfort from osteoarthritis and other joint disorders may reduce physical activity in individuals experiencing this condition, resulting in energy imbalance and weight gain. Increased weight can exacerbate existing problems, as additional stress on joints stimulates risk of additional joint disorders. Dietitians play a role in preventing or reversing the problem of joint disorders by promoting nutrient-rich diets that support joint health through improvement in cartilage metabolism. In addition, counseling individuals on weight management and active lifestyles are key strategies for the management of joint health.
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Abstract
Osteoarthritis (OA) has been a frustrating disease for both the patient and the physician. Its current impact on society is tremendous and rivals that of ischemic heart disease in many regards. As the baby boomers reach late adulthood and the obesity epidemic rages on, OA will assume an even greater impact on society. The current OA armamentarium only reduces pain and perhaps improves function, but has no impact on the disease incidence or progression. Thus, the challenge for researchers to develop disease-modifying OA drugs becomes an issue of paramount importance. Several advances in the understanding of OA pathophysiology have provided a glimpse of optimism that disease modification is a real possibility.
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Affiliation(s)
- Bob H Sun
- Center of Innovative Therapies, University of California at San Diego, 9320 Campus Point Drive, Suite 225, La Jolla, CA 92037-0943, USA
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35
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Steplewski A, Hintze V, Fertala A. Molecular basis of organization of collagen fibrils. J Struct Biol 2006; 157:297-307. [PMID: 17126032 DOI: 10.1016/j.jsb.2006.10.009] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2006] [Revised: 09/25/2006] [Accepted: 10/05/2006] [Indexed: 11/29/2022]
Abstract
The collagen fibrils are formed by self-assembly of individual collagen molecules, but the mechanism that drives their orderly packing during fibril formation is not clearly defined. To identify structural determinants critical for the D-periodic alignment of collagen molecules we employed three sets of genetically engineered collagen II variants: (i) a set in which domains corresponding to the specific D periods have been purposely deleted, (ii) a set of collagen variants consisting of tandem repeats of a specific D period, and (iii) a set lacking definite fragments of the D4 period. All collagen variants were analyzed for their ability to assemble into D-periodic fibrils. Even though all genetically engineered collagen variants differ significantly from the wild-type collagen II, most of them were able to form filamentous structures. The D-periodic banding pattern, an indication of the staggered arrangement of collagen monomers, however, occurred only when the D1, D4, and D0.4 domains of interacting collagen monomers could potentially cluster together to form a triad through telopeptide-mediated binding. Our results identify a critical step in the formation of collagenous matrices and provide experimental evidence for the active involvement of the N-terminal and C-terminal regions of fibrillar collagens in this process.
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Affiliation(s)
- Andrzej Steplewski
- Department of Dermatology and Cutaneous Biology, Jefferson Medical College, and Jefferson Institute of Molecular Medicine, Thomas Jefferson University, BLSB, Room 424, 233 S. 10th Street, Philadelphia, PA 19107, USA
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Sellick GS, Hoornaert KP, Mortier GR, King C, Dolling CL, Newbury-Ecob RA, Gargan M, Hall CM, Houlston RS, Smithson SF. A form of autosomal dominant spondyloepiphyseal dysplasia is caused by a glycine to alanine substitution in the COL2A1 gene. Clin Dysmorphol 2006; 15:197-202. [PMID: 16957471 DOI: 10.1097/01.mcd.0000220616.55402.03] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
We report a family with an unusual form of autosomal dominant spondyloepiphyseal dysplasia characterized by infantile-onset disproportionate short stature with relative shortening of the spine, thoracic kyphosis, lumbar lordosis, scoliosis and premature osteoarthritis of the joints especially of the hips. Radiological findings include mild platyspondyly, vertebral end plate irregularity, irregular femoral necks, and dysplasia of the capital femoral epiphyses with flattening and irregularity present from childhood and mild variable epiphyseal dysplasia elsewhere in the skeleton. Intrafamilial variability is observed in the degree of short stature, severity of spinal and hip involvement and the age of onset of symptoms and complications. We demonstrate that this dysplasia is due to a glycine to alanine substitution in the COL2A1 gene (p.Gly862Ala), thereby expanding the phenotypic spectrum of dysplasias associated with defects in type II collagen.
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Affiliation(s)
- Gabrielle S Sellick
- Section of Cancer Genetics, Institute of Cancer Research, Sutton Center for Medical Genetics, Ghent University, Belgium Department of Clinical Genetics, St Michael's Hospital Department of Orthopaedic Surgery, Bristol Royal Hospital for Children, Bristol Department of Radiology, Great Ormond Street Hospital for Children, London, UK
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Marshall KW, Zhang H, Nossova N. Chondrocyte genomics: implications for disease modification in osteoarthritis. Drug Discov Today 2006; 11:825-32. [PMID: 16935751 DOI: 10.1016/j.drudis.2006.07.004] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2006] [Revised: 05/31/2006] [Accepted: 07/10/2006] [Indexed: 11/18/2022]
Abstract
Advances in genomic technologies have made genome-wide-association and gene-expression studies a reality. Despite technical and analytical challenges, the application of genomic technologies to osteoarthritis research will lead to a better understanding of the disease at the molecular level. Functional genomics will identify genes involved in the chondrocyte response to cartilage injury and cartilage repair, and will help clarify the role of chondrocytes in arthritis onset, progression and outcome. Systems biology will enable researchers to develop a full portrait of osteoarthritis, a complex and multifactorial disease that involves not only articular cartilage but also synovium, synovial fluid, subchondral bone and peripheral blood. Ultimately such an approach will result in novel diagnostic and therapeutic targets and better disease management.
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Affiliation(s)
- K Wayne Marshall
- ChondroGene, 800 Petrolia Road, Unit 15, Toronto, Ontario, Canada.
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38
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Mahr S, Burmester GR, Hilke D, Göbel U, Grützkau A, Häupl T, Hauschild M, Koczan D, Krenn V, Neidel J, Perka C, Radbruch A, Thiesen HJ, Müller B. Cis- and trans-acting gene regulation is associated with osteoarthritis. Am J Hum Genet 2006; 78:793-803. [PMID: 16642435 PMCID: PMC1474041 DOI: 10.1086/503849] [Citation(s) in RCA: 56] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2005] [Accepted: 03/01/2006] [Indexed: 11/03/2022] Open
Abstract
Osteoarthritis (OA) is a complex disease of the skeleton and is associated with aging. Both environmental and genetic factors contribute to its pathogenesis. We set out to identify novel genes associated with OA, concentrating on regulatory polymorphisms allowing for differential expression. Our strategy to identify differentially expressed genes included an initial transcriptome analysis of the peripheral blood mononuclear cells of six patients with OA and six age-matched healthy controls. These were screened for allelic expression imbalances and potentially regulatory single-nucleotide polymorphisms (SNPs) in the 5' regions of the genes. To establish disease association, disparate promoter SNP distributions correlating with the differential expression were tested on larger cohorts. Our approach yielded 26 candidate genes differentially expressed between patients and controls. Whereas BLP2 and CIAS1 seem to be trans-regulated, as the absence of allelic expression imbalances suggests, the presence of allelic imbalances confirms cis-regulatory mechanisms for RHOB and TXNDC3. Interestingly, on/off-switching suggests additional trans-regulation for TXNDC3. Moreover, we demonstrate for RHOB and TXNDC3 statistically significant associations between 5' SNPs and the disease that hint at regulatory functions. Investigating the respective genes functionally will not only shed light on the disease association but will also add to the understanding of the pathogenic processes involved in OA and may point out novel therapeutic approaches.
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Affiliation(s)
| | | | | | - Udo Göbel
- Contact Software GmbH, Bremen, Germany
| | | | - Thomas Häupl
- Charité University Hospital, Medical Faculty, Humboldt University
| | - Matthias Hauschild
- Orthopedic Surgery, Medical Faculty, University of Rostock, Rostock, Germany
| | | | - Veit Krenn
- Charité University Hospital, Medical Faculty, Humboldt University
| | | | - Carsten Perka
- Charité University Hospital, Medical Faculty, Humboldt University
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Koshizuka Y, Ogata N, Shiraki M, Hosoi T, Seichi A, Takeshita K, Nakamura K, Kawaguchi H. Distinct association of gene polymorphisms of estrogen receptor and vitamin D receptor with lumbar spondylosis in post-menopausal women. EUROPEAN SPINE JOURNAL : OFFICIAL PUBLICATION OF THE EUROPEAN SPINE SOCIETY, THE EUROPEAN SPINAL DEFORMITY SOCIETY, AND THE EUROPEAN SECTION OF THE CERVICAL SPINE RESEARCH SOCIETY 2005; 15:1521-8. [PMID: 16362385 DOI: 10.1007/s00586-005-0005-8] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/29/2005] [Revised: 08/21/2005] [Accepted: 10/09/2005] [Indexed: 12/26/2022]
Abstract
Contribution of genetic backgrounds to the etiology of lumbar spondylosis has been suggested by epidemiological studies. This study was designed to determine the association of restriction fragment length polymorphisms (RFLPs) of estrogen receptor (ER), vitamin D receptor (VDR), parathyroid hormone (PTH) and interleukin-1beta (IL-1beta) genes with the radiological severity of lumbar spondylosis at the disk level from L1/2 to L5/S1 in Japanese post-menopausal women. ER and VDR RFLP haplotypes were associated with the severity of spondylosis in the upper levels (L1/2 and L2/3) more than in the lower levels. Association of ER genotype was more pronounced in the group younger than average than in the older group, while that of VDR genotype was more significant in the older group. Neither PTH nor IL1-beta RFLP was associated with the severity at any levels in either stratified group. We thus conclude that ER and VDR genes may contribute to lumbar spondylosis in a distinct manner: estrogen sensitivity influences the severity in the early phase after menopause while vitamin D plays an important role at older ages when the contribution of estrogen loss is weaker.
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Affiliation(s)
- Yu Koshizuka
- Department of Orthopaedic Surgery, Faculty of Medicine, University of Tokyo, Hongo 7-3-1, Tokyo, Japan
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Ito H, Rucker E, Steplewski A, McAdams E, Brittingham RJ, Alabyeva T, Fertala A. Guilty by association: some collagen II mutants alter the formation of ECM as a result of atypical interaction with fibronectin. J Mol Biol 2005; 352:382-95. [PMID: 16083907 DOI: 10.1016/j.jmb.2005.07.019] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2005] [Revised: 06/30/2005] [Accepted: 07/11/2005] [Indexed: 11/16/2022]
Abstract
Among the structural components of extracellular matrices (ECM) fibrillar collagens play a critical role, and single amino acid substitutions in these proteins lead to pathological changes in tissues in which they are expressed. Employing a biologically relevant experimental model consisting of cells expressing R75C, R519C, R789C, and G853E procollagen II mutants, we found that the R789C mutation causing a decrease in the thermostability of collagen not only alters individual collagen molecules and collagen fibrils, but also has a negative impact on fibronectin. We propose that thermolabile collagen molecules are able to bind to fibronectin, thereby altering intracellular and extracellular processes in which fibronectin takes part, and we postulate that such an atypical interaction could change the architecture of the ECM of affected tissues in patients harboring mutations in genes encoding fibrillar collagens.
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Affiliation(s)
- Hidetoshi Ito
- Department of Dermatology and Cutaneous Biology, Jefferson Medical College, Thomas Jefferson University, Philadelphia, PA 19107, USA
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Abstract
Osteoarthritis (OA) has been a frustrating disease for both the patient and the physician. Its current impact on society is tremendous, and rivals that of ischemic heart disease in many regards. As the baby boomers reach late adulthood and the obesity epidemic rages on, OA will assume an even greater impact on society. The current OA armamentarium only reduces pain and perhaps improves function, and has no impact on the disease incidence or progression. Thus, the challenge for researchers to develop disease-modifying OA drugs becomes an issue of paramount importance. Several advances in our understanding of OA pathophysiology have provided a glimpse of optimism that disease modification is a real possibility. Appreciation of the local factors involved in OA progression as well as the inflammatory nature in a subset of patients has led to different treatment strategies based on predominant phenotype. Further understanding of the initiating events in cartilage destruction, the relationship between the different pathologic influences, and the role of the chondrocyte in maintaining extracellular matrix homeostasis will be necessary to reveal potential targets of therapy.
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Affiliation(s)
- Christopher W Wu
- Center of Innovative Therapies at the University of San Diego at California, 9320 Campus Point Drive, Suite 225, La Jolla, CA 92037-0943, USA
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Steplewski A, Ito H, Rucker E, Brittingham RJ, Alabyeva T, Gandhi M, Ko FK, Birk DE, Jimenez SA, Fertala A. Position of single amino acid substitutions in the collagen triple helix determines their effect on structure of collagen fibrils. J Struct Biol 2005; 148:326-37. [PMID: 15522781 DOI: 10.1016/j.jsb.2004.07.006] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2004] [Revised: 07/20/2004] [Indexed: 11/20/2022]
Abstract
Collagen II fibrils are a critical structural component of the extracellular matrix of cartilage providing the tissue with its unique biomechanical properties. The self-assembly of collagen molecules into fibrils is a spontaneous process that depends on site-specific binding between specific domains belonging to interacting molecules. These interactions can be altered by mutations in the COL2A1 gene found in patients with a variety of heritable cartilage disorders known as chondrodysplasias. Employing recombinant procollagen II, we studied the effects of R75C or R789C mutations on fibril formation. We determined that both R75C and R789C mutants were incorporated into collagen assemblies. The effects of the R75C and R789C substitutions on fibril formation differed significantly. The R75C substitution located in the thermolabile region of collagen II had no major effect on the fibril formation process or the morphology of fibrils. In contrast, the R789C substitution located in the thermostable region of collagen II caused profound changes in the morphology of collagen assemblies. These results provide a basis for identifying pathways leading from single amino acid substitutions in collagen II to changes in the structure of individual fibrils and in the organization of collagenous matrices.
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Affiliation(s)
- Andrzej Steplewski
- Department of Dermatology and Cutaneous Biology, Jefferson Medical College, Thomas Jefferson University, Philadelphia, PA 19107, USA
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Spondyloepiphyseal dysplasia in three generations. EUROPEAN JOURNAL OF ORTHOPAEDIC SURGERY AND TRAUMATOLOGY 2004. [DOI: 10.1007/s00590-004-0211-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Löppönen T, Körkkö J, Lundan T, Seppänen U, Ignatius J, Kääriäinen H. Childhood-onset osteoarthritis, tall stature, and sensorineural hearing loss associated with Arg75-Cys mutation in procollagen type II gene (COL2A1). Arthritis Care Res (Hoboken) 2004; 51:925-32. [PMID: 15593085 DOI: 10.1002/art.20817] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
OBJECTIVE To define the clinical, radiologic, and molecular genetic characteristics of a family with early progressive osteoarthritis mimicking childhood rheumatoid arthritis, Scheuermann-like changes of the spine, tall stature, short 3 and 4 metatarsals, and moderate sensorineural hearing loss. METHODS We describe a 22-year-old woman and her 54-year-old mother with early progressive osteoarthritis mimicking childhood rheumatoid arthritis. The index case, her mother, and 3 other family members underwent a physical examination, anthropometric measurements, and radiologic studies. Their DNA was sequenced for the procollagen type II (COL2A1) gene. RESULTS Mild scoliosis was noticed in the proband at the age of 6 years, and at the age of 7 years large Schmorl's nodes were found in the vertebrae L1-2. At the age of 11 years, changes resembling Scheuermann's disease were seen, mostly in the thoracic vertebrae. At the same age, she began to have arthralgia in the weight-bearing joints and osteoarthritis progressed fast, necessitating a hip prosthesis at the age of 18 years. The proband and her mother had bilateral sensorineural hearing loss of moderate degree. Both mother and daughter had an Arg75-Cys mutation in the COL2A1 gene. CONCLUSION This family is the fourth example of the Arg75-Cys mutation in the COL2A1 gene, which appears to lead to a clearly recognizable phenotype. The finding suggests that sensorineural hearing loss may be a part of this syndrome.
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Sahlman J, Pitkänen MT, Prockop DJ, Arita M, Li SW, Helminen HJ, Långsjö TK, Puustjärvi K, Lammi MJ. A human COL2A1 gene with an Arg519Cys mutation causes osteochondrodysplasia in transgenic mice. ACTA ACUST UNITED AC 2004; 50:3153-60. [PMID: 15476249 DOI: 10.1002/art.20552] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
OBJECTIVE An arginine-to-cysteine substitution at position 519 of the COL2A1 gene causes early generalized osteoarthritis with mild chondrodysplasia in humans. In this study, a human COL2A1 gene with the same mutation was introduced into a murine genome having 1 or no alleles of the murine Col2a1 gene, and the skeletal phenotypes of the transgenic mice were compared with those of control mice. METHODS Mice with 1 allele of the normal murine Col2a1 gene and 1 allele of the mutated human COL2A1 gene (n = 10), those with no murine Col2a1 gene and 2 alleles of the mutated human COL2A1 gene (n = 13), those with no murine Col2a1 gene and only 1 allele of the mutated COL2A1 gene (n = 9), and normal control mice (n = 11) were studied for skeletal abnormalities, using radiographic imaging and light microscopic analyses of histologic sections. The collagen network of cartilage was also investigated with transmission electron microscopy. RESULTS At 2 months of age, all transgenic mice had dysplastic changes in their long bones, flattened vertebral bodies, and osteoarthritic changes in their joints. The intervertebral discs of the transgenic animals were degenerated, and their histologic structure was disturbed. The changes were more severe in mice with no murine Col2a1 allele. CONCLUSION The human COL2A1 gene with the Arg519Cys mutation causes osteochondrodysplasia in mice, as it does in humans.
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Chu SC, Yang SF, Lue KH, Hsieh YS, Wu CL, Lu KH. Regulation of gelatinases expression by cytokines, endotoxin, and pharmacological agents in the human osteoarthritic knee. Connect Tissue Res 2004; 45:142-50. [PMID: 15512768 DOI: 10.1080/03008200490506058] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
We examined the amount of gelatinases (matrix metalloproteinase-2 and -9 [MMP-2 and MMP-9] in a series of chondral, meniscal, and synovial cultures of early osteoarthritis (OA) after treatment with or without catabolic cytokines. These included interleukin-1alpha (IL-1alpha) and tumor necrosis factor-alpha (TNF-alpha), lipopolysaccharide (LPS), and pharmacological agents, including plasmin/serine proteinase antagonist aprotinin, protein synthesis inhibitor cycloheximide, and protein kinase C (PKC) inhibitors staurosporine, H7, and Gö6976 for investigation of their effects on MMP-2 and -9 production in OA. Gelatin zymography revealed that IL-alpha, TNF-alpha, and LPS could elevate MMP-2 secretion in all tissue cultures and also increase MMP-9 production in all synovial and some meniscal cultures. In contrast, aprotinin, cycloheximide, staurosporine, H7, and Gö6976 could suppress MMP-2 secretion in all tissue cultures and also decrease MMP-9 production in all synovial and some meniscal cultures. Our data indicate that catabolic cytokines and LPS may promote tissue destruction and disintegration of extracellular matrix in early OA. Agents that target on the PKC pathway, plasmin/serine proteinase or protein synthesis for MMP-2 and -9 in early OA may inhibit the production of MMPs. These findings might contribute to the design of more efficacious therapies.
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Affiliation(s)
- Shu-Chen Chu
- Department of Food Science, Chungtai Institute of Health Sciences and Technology, Taichung, Taiwan
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Abstract
Osteoarthritis (OA) is a complex process affecting many different joint areas in the body. From a pathophysiological point of view some features are crucial for the diagnosis, such as cartilage fibrillation and thinning, subchondral sclerosis and the presence of osteophytes. From a clinical perspective, OA is the most prevalent rheumatic joint disorder, causing pain and stiffness of the joints and, for the individual, impaired function and health status. The aim of this chapter is to present current knowledge of definitions of OA, its presence in different populations and in different joint areas (the back excluded). Furthermore, methods of diagnosing and delineating clinically relevant forms of OA, now and in the future, are presented as well as current knowledge of the risk factors for developing and the factors for preventing OA.
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Kawaguchi Y, Kanamori M, Ishihara H, Ohmori K, Matsui H, Kimura T. The association of lumbar disc disease with vitamin-D receptor gene polymorphism. J Bone Joint Surg Am 2002; 84:2022-8. [PMID: 12429765 DOI: 10.2106/00004623-200211000-00018] [Citation(s) in RCA: 121] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
BACKGROUND Although the etiology of lumbar disc disease is unknown, it has been suggested that a genetic factor contributes to its development. Recently, some genetic polymorphisms have been found to be related to clinical disorders. We investigated the association between vitamin-D receptor gene and estrogen receptor gene polymorphisms and lumbar disc disease in young adults. METHODS The participants included 205 young adults (166 women and thirty-nine men) with or without low-back problems. A magnetic resonance imaging scan of the lumbar spine was performed for all subjects, and the grade of disc degeneration was determined, according to the four-grade classification system of Schneiderman et al. The presence or absence of disc herniation was also evaluated. Genomic DNA was extracted from peripheral blood samples. The polymorphisms of the vitamin-D receptor and estrogen receptor genes were detected with use of a polymerase-chain-reaction assay. The restriction fragment length polymorphisms (RFLPs) for the vitamin-D receptor gene were analyzed by TaqI and ApaI restriction enzymes. XbaI and PvuII restriction enzymes were used for the estrogen receptor gene analysis. The distribution of polymorphism in subjects with disc degeneration and/or disc herniation was compared with that in the normal subjects. RESULTS The allelic frequencies of both vitamin-D receptor gene and estrogen receptor gene polymorphisms were similar to those in previous analyses of Japanese subjects. The allelic variation in the vitamin-D receptor gene was associated with multilevel and severe disc degeneration and disc herniation. The Tt allele was found to be more frequently associated with multilevel disc disease, severe disc degeneration, and disc herniation than was the TT allele. No additional associations were found. CONCLUSIONS This study revealed that the Tt allele of the vitamin-D receptor gene was more frequently associated with multilevel and severe disc degeneration and disc herniation than was the TT allele, pointing to an increased risk of disc disease at an early age in subjects with the Tt allele in the vitamin-D receptor gene.
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Affiliation(s)
- Yoshiharu Kawaguchi
- Department of Orthopaedic Surgery, Toyama Medical and Pharmaecutical University, Faculty of Medicine, 2630 Sugitani, Toyama 930-0194, Japan.
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Arita M, Li SW, Kopen G, Adachi E, Jimenez SA, Fertala A. Skeletal abnormalities and ultrastructural changes of cartilage in transgenic mice expressing a collagen II gene (COL2A1) with a Cys for Arg-alpha1-519 substitution. Osteoarthritis Cartilage 2002; 10:808-15. [PMID: 12359167 DOI: 10.1053/joca.2002.0830] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
OBJECTIVE To examine the mechanism by which the Arg-->Cys 519 mutation causes the clinical phenotype employing transgenic mice that express the mutated human COL2A1. METHODS A DNA construct under the control of a COL2A1 specific promoter was prepared from genomic DNA isolated from fibroblasts from the proband with primary generalized osteoarthritis (OA) associated with a mild chondrodysplasia. Transgenic mice were obtained by injection of the constructs into pro-nuclei of fertilized eggs from the FVB/N inbred mouse strain. Transgenic mice harboring two alleles of the mutated human COL2A1 were examined for morphological abnormalities and for alterations of their skeletal development. Ultrastructural examination was performed to identify changes in the organization and density of collagen II fibrils in articular cartilage of the transgenic mice. RESULTS Transgenic mice harboring two alleles of the mutated human collagen gene were smaller than their normal littermates, had a cleft palate, and disorganized growth plate. Electron microscopy of articular cartilage showed a decreased density of collagen II fibrils and revealed chondrocytes with dilated Golgi cysternae. CONCLUSIONS Expression of a COL2A1 with an Arg-->Cys 519 substitution in transgenic mice causes retardation of skeletal development and ultrastructural alterations in articular cartilage with a profound reduction of the density of the collagen II fibrils in the tissue. These alterations may be responsible for the phenotype of precocious generalized OA and chondrodysplasia displayed by patients harboring this COL2A1 mutation.
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Affiliation(s)
- M Arita
- Department of Dermatology and Cutaneous Biology, Jefferson Medical College, Jefferson Institute of Molecular Medicine, Thomas Jefferson University, Philadelphia, PA 19107, USA
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Granchi D, Stea S, Sudanese A, Toni A, Baldini N, Giunti A. Association of two gene polymorphisms with osteoarthritis secondary to hip dysplasia. Clin Orthop Relat Res 2002:108-17. [PMID: 12360016 DOI: 10.1097/00003086-200210000-00018] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Two adjacent genes on the 12q chromosome, the alpha 1 chain of Type II collagen, and the vitamin D receptor, have been considered potentially related to the pathophysiology of osteoarthritis. Two restriction fragment length polymorphisms were detected in 50 healthy donors and in 143 patients having a total hip replacement for idiopathic osteoarthritis or osteoarthritis secondary to developmental hip dysplasia. The polymorphic sites of Type II collagen and vitamin D receptor were amplified by polymerase chain reaction, and the products were digested with PvuII and BsmI restriction enzymes, respectively. The results showed that medical history and clinical characteristics, including gender, familial history of osteoarthritis, other hip prosthesis, and how early in life implantation was done did not seem to be connected to a particular genotype. Significant results were found by assessing the two groups of diseases that led to hip arthroplasty, suggesting a possible link between some haplotypes and the risk of severe osteoarthritis in patients with hip dysplasia. These results indicate that genetic markers could contribute to the understanding of the natural history of this disease.
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MESH Headings
- Adult
- Aged
- Aged, 80 and over
- Arthroplasty, Replacement, Hip
- Collagen Type II/genetics
- Female
- Genetic Predisposition to Disease/genetics
- Heterozygote
- Hip Dislocation, Congenital/complications
- Hip Dislocation, Congenital/genetics
- Hip Dislocation, Congenital/surgery
- Homozygote
- Humans
- Male
- Middle Aged
- Osteoarthritis, Hip/etiology
- Osteoarthritis, Hip/genetics
- Osteoarthritis, Hip/surgery
- Polymorphism, Restriction Fragment Length
- Receptors, Calcitriol/genetics
- Severity of Illness Index
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Affiliation(s)
- Donatella Granchi
- Laboratorio di Fisiopatologia degli Impianti Ortopedici, Istitutiti Ortopedici Rizzoli, Bologna, Italy.
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