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Papageorgiou AA, Roussos A, Papathanasiou I, Balis C, Karachalios T, Varitimidis SE, Malizos KN, Tsezou A. MiR-217 Regulates SIRT1 Expression and Promotes Inflammatory and Apoptotic Responses in Osteoarthritis. Genes (Basel) 2023; 14:2155. [PMID: 38136977 PMCID: PMC10742866 DOI: 10.3390/genes14122155] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2023] [Revised: 11/23/2023] [Accepted: 11/24/2023] [Indexed: 12/24/2023] Open
Abstract
Previous studies have reported miR-217 uregulation in age-related pathologies. We investigated the impact of miR-217-5p on sirtuin 1 (SIRT1) regulation in human osteoarthritic (OA) chondrocytes. MiR-217 target enrichment analyses were performed using three public databases, Gene Ontology and Kyoto Encyclopedia of Genes and Genomes. MiR-217-5p expression levels were quantified in normal and OA chondrocytes. SIRT1 expression levels, nuclear factor kappa-B p65 subunit (NF-κBp65) and p53 acetylation levels, and expression levels of OA-related pro-inflammatory markers [tumor necrosis factor α (TNFα), interleukin 1β (IL-1β), IL-6], pro-apoptotic markers [Bax, pro-caspase 3, cleaved caspase 3] and matrix regulators [matrix metalloproteinase (MMP)-1, MMP-13, MMP-9, Collagen 2 (COL2A1), Aggrecan (ACAN)] were evaluated in miR-217 mimic-treated and/or miR-217 inhibitor-treated OA chondrocytes, with/without subsequent treatment with siRNA against SIRT1 (siSIRT1). MiR-217-5p was upregulated in OA chondrocytes, while target prediction/enrichment analyses revealed SIRT1 as miR-217 target-gene. Deacetylation of NF-κBp65 and p53 in miR-217 inhibitor-treated OA chondrocytes was reversed by siSIRT1 treatment. MiR-217 inhibitor-treated OA chondrocytes showed increased COL2A1, ACAN and decreased IL-1β, IL-6, TNFα, Bax, cleaved caspase 3 and MMPs expression levels, which were reversed following miR-217 inhibitor/siSIRT1 treatment. Our findings highlight the impact of miR-217-5p on SIRT1 downregulation contributing to OA pathogenesis.
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Affiliation(s)
- Aliki-Alexandra Papageorgiou
- Laboratory of Cytogenetics and Molecular Genetics, Faculty of Medicine, University of Thessaly, Biopolis, 41500 Larissa, Greece; (A.-A.P.); (A.R.); (I.P.); (C.B.)
| | - Athanasios Roussos
- Laboratory of Cytogenetics and Molecular Genetics, Faculty of Medicine, University of Thessaly, Biopolis, 41500 Larissa, Greece; (A.-A.P.); (A.R.); (I.P.); (C.B.)
| | - Ioanna Papathanasiou
- Laboratory of Cytogenetics and Molecular Genetics, Faculty of Medicine, University of Thessaly, Biopolis, 41500 Larissa, Greece; (A.-A.P.); (A.R.); (I.P.); (C.B.)
- Department of Biology, Faculty of Medicine, University of Thessaly, Biopolis, 41500 Larissa, Greece
| | - Charalampos Balis
- Laboratory of Cytogenetics and Molecular Genetics, Faculty of Medicine, University of Thessaly, Biopolis, 41500 Larissa, Greece; (A.-A.P.); (A.R.); (I.P.); (C.B.)
| | - Theophilos Karachalios
- Department of Orthopedic Surgery, Faculty of Medicine, School of Health Sciences, University of Thessaly, Biopolis, 41500 Larissa, Greece; (T.K.); (S.E.V.); (K.N.M.)
| | - Sokratis E. Varitimidis
- Department of Orthopedic Surgery, Faculty of Medicine, School of Health Sciences, University of Thessaly, Biopolis, 41500 Larissa, Greece; (T.K.); (S.E.V.); (K.N.M.)
| | - Konstantinos N. Malizos
- Department of Orthopedic Surgery, Faculty of Medicine, School of Health Sciences, University of Thessaly, Biopolis, 41500 Larissa, Greece; (T.K.); (S.E.V.); (K.N.M.)
| | - Aspasia Tsezou
- Laboratory of Cytogenetics and Molecular Genetics, Faculty of Medicine, University of Thessaly, Biopolis, 41500 Larissa, Greece; (A.-A.P.); (A.R.); (I.P.); (C.B.)
- Department of Biology, Faculty of Medicine, University of Thessaly, Biopolis, 41500 Larissa, Greece
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Papathanasiou I, Balis C, Destounis D, Mourmoura E, Tsezou A. NEAT1-mediated miR-150-5p downregulation regulates b-catenin expression in OA chondrocytes. Funct Integr Genomics 2023; 23:246. [PMID: 37468759 DOI: 10.1007/s10142-023-01139-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2023] [Revised: 06/14/2023] [Accepted: 06/15/2023] [Indexed: 07/21/2023]
Abstract
We investigated the role of miR-150-5p in osteoarthritic (OA) chondrocytes, as well as the possible regulatory role of long non-coding RNAs (lncRNAs) in miR-150-5p expression. TargetScan, StarBase, DIANA-LncBase, and Open Targets databases were used to predict miR-150-5p target genes, lncRNAs/miR-150-5p interactions, and OA-related genes. Protein-protein interaction (PPI) network was constructed using the Search Tool for the Retrieval of Interacting Genes/Proteins (STRING). Gene ontology (GO) and pathway analysis were performed using Enrichr database. A publicly available RNA-seq dataset was retrieved to identify differentially expressed lncRNAs in damaged vs intact cartilage. We re-analyzed the retrieved RNA-seq data and revealed 177 differentially expressed lncRNAs in damage vs intact cartilage, including Nuclear Paraspeckle Assembly Transcript 1(NEAT1). MiR-150-5p, NEAT1, b-catenin, matrix metallopeptidase 13 (MMP-13), and ADAM metallopeptidase with thrombospondin type 1 motif 5 (ADAMTS-5) expressions were assessed by reverse transcription-quantitative PCR (RT-qPCR) and western blot assay. Knockout and transfection experiments were conducted to investigate the role of NEAT1/miR-150-5p/b-catenin in cartilage degradation. Bioinformatics analysis revealed that b-catenin was an OA-related miR-150-5p target. MiR-150-5p overexpression in OA chondrocytes resulted in decreased expression of b-catenin, as well as MMP-13 and ADAMTS-5, both being Wnt/b-catenin downstream target genes. NEAT1/miR-150-5p interaction was predicted by bioinformatics analysis, while NEAT1 knockout led to increased expression of miR-150-5p in OA chondrocytes. Moreover, inhibition of miR-150-5p reversed the repressive effects of NEAT1 silencing in b-catenin expression in OA chondrocytes. Our results support a possible catabolic role of NEAT1/miR-150-5p interaction in OA progression by regulating b-catenin expression.
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Affiliation(s)
- Ioanna Papathanasiou
- Faculty of Medicine, Laboratory of Cytogenetics and Molecular Genetics, University of Thessaly, Biopolis, 41500, Larissa, Greece
- Department of Biology, Faculty of Medicine, University of Thessaly, Larissa, Greece
| | - Charalampos Balis
- Faculty of Medicine, Laboratory of Cytogenetics and Molecular Genetics, University of Thessaly, Biopolis, 41500, Larissa, Greece
| | - Dimitrios Destounis
- Faculty of Medicine, Laboratory of Cytogenetics and Molecular Genetics, University of Thessaly, Biopolis, 41500, Larissa, Greece
| | - Evanthia Mourmoura
- Faculty of Medicine, Laboratory of Cytogenetics and Molecular Genetics, University of Thessaly, Biopolis, 41500, Larissa, Greece
| | - Aspasia Tsezou
- Faculty of Medicine, Laboratory of Cytogenetics and Molecular Genetics, University of Thessaly, Biopolis, 41500, Larissa, Greece.
- Department of Biology, Faculty of Medicine, University of Thessaly, Larissa, Greece.
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Konteles V, Papathanasiou I, Tzetis M, Goussetis E, Trachana V, Mourmoura E, Balis C, Malizos K, Tsezou A. Integration of Transcriptome and MicroRNA Profile Analysis of iMSCs Defines Their Rejuvenated State and Conveys Them into a Novel Resource for Cell Therapy in Osteoarthritis. Cells 2023; 12:1756. [PMID: 37443790 PMCID: PMC10340510 DOI: 10.3390/cells12131756] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2023] [Revised: 06/18/2023] [Accepted: 06/26/2023] [Indexed: 07/15/2023] Open
Abstract
Although MSCs grant pronounced potential for cell therapies, several factors, such as their heterogeneity restrict their use. To overcome these limitations, iMSCs (MSCs derived from induced pluripotent stem cells (iPSCs) have attracted attention. Here, we analyzed the transcriptome of MSCs, iPSCs and iMSCs derived from healthy individuals and osteoarthritis (OA) patients and explored miRNA-mRNA interactions during these transitions. We performed RNA-seq and gene expression comparisons and Protein-Protein-Interaction analysis followed by GO enrichment and KEGG pathway analyses. MicroRNAs' (miRNA) expression profile using miRarrays and differentially expressed miRNA's impact on regulating iMSCs gene expression was also explored. Our analyses revealed that iMSCs derivation from iPSCs favors the expression of genes conferring high proliferation, differentiation, and migration properties, all of which contribute to a rejuvenated state of iMSCs compared to primary MSCs. Additionally, our exploration of the involvement of miRNAs in this rejuvenated iMSCs transcriptome concluded in twenty-six miRNAs that, as our analysis showed, are implicated in pluripotency. Notably, the identified here interactions between hsa-let7b/i, hsa-miR-221/222-3p, hsa-miR-302c, hsa-miR-181a, hsa-miR-331 with target genes HMGA2, IGF2BP3, STARD4, and APOL6 could prove to be the necessary tools that will convey iMSCs into the ideal mean for cell therapy in osteoarthritis.
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Affiliation(s)
- Vasileios Konteles
- Laboratory of Cytogenetics and Molecular Genetics, Faculty of Medicine, University of Thessaly, 41110 Larissa, Greece; (V.K.); (I.P.)
| | - Ioanna Papathanasiou
- Laboratory of Cytogenetics and Molecular Genetics, Faculty of Medicine, University of Thessaly, 41110 Larissa, Greece; (V.K.); (I.P.)
- Department of Biology, Faculty of Medicine, University of Thessaly, 41110 Larissa, Greece;
| | - Maria Tzetis
- Department of Medical Genetics, Medical School, National and Kapodistrian University of Athens, 11527 Athens, Greece;
| | - Evgenios Goussetis
- Stem Cell Transplant Unit, Aghia Sophia Children’s Hospital, 11527 Athens, Greece;
| | - Varvara Trachana
- Department of Biology, Faculty of Medicine, University of Thessaly, 41110 Larissa, Greece;
| | - Evanthia Mourmoura
- Laboratory of Cytogenetics and Molecular Genetics, Faculty of Medicine, University of Thessaly, 41110 Larissa, Greece; (V.K.); (I.P.)
| | - Charalampos Balis
- Laboratory of Cytogenetics and Molecular Genetics, Faculty of Medicine, University of Thessaly, 41110 Larissa, Greece; (V.K.); (I.P.)
| | - Konstantinos Malizos
- Department of Orthopaedics, Faculty of Medicine, University of Thessaly, 41110 Larissa, Greece
| | - Aspasia Tsezou
- Laboratory of Cytogenetics and Molecular Genetics, Faculty of Medicine, University of Thessaly, 41110 Larissa, Greece; (V.K.); (I.P.)
- Department of Biology, Faculty of Medicine, University of Thessaly, 41110 Larissa, Greece;
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Mourmoura E, Papathanasiou I, Trachana V, Konteles V, Tsoumpou A, Goutas A, Papageorgiou AA, Stefanou N, Tsezou A. Leptin-depended NLRP3 inflammasome activation in osteoarthritic chondrocytes is mediated by ROS. Mech Ageing Dev 2022; 208:111730. [PMID: 36087742 DOI: 10.1016/j.mad.2022.111730] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2021] [Revised: 09/01/2022] [Accepted: 09/05/2022] [Indexed: 12/30/2022]
Abstract
Leptin and ROS are implicated in the regulation of inflammatory pathways including NLRP3-inflammasome. We investigated the functional link between leptin, ROS and NLRP3-inflammasome formation/activation in osteoarthritis (OA), an age-related disease. We found that inflammasome components' (NLRP3, ASC, Caspase-1 and cleaved Caspase-1) protein expression were increased in OA cartilage biopsies and chondrocytes compared to healthy cartilage and chondrocytes. Immunofluorescence showed increased co-localization of NLRP3/ASC and NLRP3/Caspase-1, ASC-specks formation and ROS levels in OA compared to normal chondrocytes. NOX4 mRNA expression and IL-1β/IL-18 secretion levels were also elevated in OA chondrocytes. Furthermore, NLRP3-siRNA in OA chondrocytes revealed significant MMP-9/MMP-13 downregulation. To elucidate leptin/ROS/NLRP3-inflammasome interactions, OA chondrocytes were treated with ROS-inhibitor NAC, NOXs-inhibitor DPI, NOX4-inhibitor GLX351322 and leptin-siRNA, while normal chondrocytes were incubated with leptin with or without DPI or GLX351322. We observed attenuated ROS levels and NLRP3-inflammasome formation/activation in NAC-, DPI- or GLX351322-treated OA chondrocytes, while the same effect was shown after transfection with leptin-siRNA. Furthermore, incubation of normal chondrocytes with leptin enhanced ROS production and inflammasome formation/activation, while pretreatment with DPI or GLX351322 abolished leptin's stimulatory effects confirming leptin-NOX4-ROS-inflammasome regulatory axis. Overall, our findings provide novel evidence indicating that leptin-induced NLRP3-inflammasome formation/activation in OA chondrocytes is mediated by NOX4-dependent ROS production.
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Affiliation(s)
- Evanthia Mourmoura
- Laboratory of Cytogenetics and Molecular Genetics, Faculty of Medicine, University of Thessaly, Larissa, Greece
| | - Ioanna Papathanasiou
- Department of Biology, Faculty of Medicine, University of Thessaly, Larissa, Greece
| | - Varvara Trachana
- Department of Biology, Faculty of Medicine, University of Thessaly, Larissa, Greece
| | - Vasilis Konteles
- Laboratory of Cytogenetics and Molecular Genetics, Faculty of Medicine, University of Thessaly, Larissa, Greece
| | - Alexandra Tsoumpou
- Laboratory of Cytogenetics and Molecular Genetics, Faculty of Medicine, University of Thessaly, Larissa, Greece
| | - Andreas Goutas
- Department of Biology, Faculty of Medicine, University of Thessaly, Larissa, Greece
| | | | - Nikolaos Stefanou
- Department of Orthopaedics, Faculty of Medicine, University of Thessaly, Larissa, Greece
| | - Aspasia Tsezou
- Laboratory of Cytogenetics and Molecular Genetics, Faculty of Medicine, University of Thessaly, Larissa, Greece.
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Boer CG, Hatzikotoulas K, Southam L, Stefánsdóttir L, Zhang Y, Coutinho de Almeida R, Wu TT, Zheng J, Hartley A, Teder-Laving M, Skogholt AH, Terao C, Zengini E, Alexiadis G, Barysenka A, Bjornsdottir G, Gabrielsen ME, Gilly A, Ingvarsson T, Johnsen MB, Jonsson H, Kloppenburg M, Luetge A, Lund SH, Mägi R, Mangino M, Nelissen RR, Shivakumar M, Steinberg J, Takuwa H, Thomas LF, Tuerlings M, Babis GC, Yin Cheung JP, Kang JH, Kraft P, Lietman SA, Samartzis D, Slagboom PE, Stefansson K, Thorsteinsdottir U, Tobias JH, Uitterlinden AG, Winsvold B, Zwart JA, Smith GD, Sham PC, Thorleifsson G, Gaunt TR, Morris AP, Valdes AM, Tsezou A, Cheah KS, Ikegawa S, Hveem K, Esko T, Wilkinson JM, Meulenbelt I, Michael Lee MT, van Meurs JB, Styrkársdóttir U, Zeggini E. Deciphering osteoarthritis genetics across 826,690 individuals from 9 populations. Cell 2021; 184:6003-6005. [PMID: 34822786 PMCID: PMC8658458 DOI: 10.1016/j.cell.2021.11.003] [Citation(s) in RCA: 44] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Papageorgiou AA, Goutas A, Trachana V, Tsezou A. Dual Role of SIRT1 in Autophagy and Lipid Metabolism Regulation in Osteoarthritic Chondrocytes. Medicina (B Aires) 2021; 57:medicina57111203. [PMID: 34833421 PMCID: PMC8621567 DOI: 10.3390/medicina57111203] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2021] [Revised: 10/22/2021] [Accepted: 10/30/2021] [Indexed: 11/30/2022] Open
Abstract
Background and Objectives: Osteoarthritis (OA) is one of the most common and highly prevalent types of arthritis, also considered a multiphenotypic disease with a strong metabolic component. Ageing is the primary risk factor for OA, while the age-related decline in autophagic activity affects cell function and chondrocyte homeostasis. The aim of this study was to investigate the role of sirtuin 1 (SIRT1) in autophagy dysregulation and lipid metabolism in human OA chondrocytes. Materials and Methods: OA chondrocytes were treated with Resveratrol, Hydroxycloroquine (HCQ) or 3-Methyladenine (3-MA) and HCQ or 3-MA followed by siRNA against SIRT1 (siSIRT1). Then, SIRT1, AcNF-κBp65, LOX-1 and autophagy-related proteins ATG5, ATG13, PI3K class III, Beclin-1, LC3 and ULK protein levels were evaluated using Western blot. Normal articular chondrocytes were treated under serum starvation and/or siSIRT1, and the protein expression levels of the above autophagy-related proteins were evaluated. The staining patterns of LC3/p62 and LOX-1 were analyzed microscopically by immunofluorescence. SIRT1/LC3 complex formation was analyzed by immunoprecipitation. Results: SIRT1 and LOX-1 protein expression were negatively correlated in OA chondrocytes. SIRT1 regulated LOX-1 expression via NF-κΒ deacetylation, while treatment with Resveratrol enhanced SIRT1 enzymatic activity, resulting in LOX-1 downregulation and autophagy induction. In OA chondrocytes, SIRT1 was recognized as an autophagy substrate, formed a complex with LC3 and was consequently subjected to cytoplasmic autophagosome-lysosome degradation. Moreover, siSIRT1-treated normal chondrocytes showed decreased autophagic activity, while double-treated (siSIRT1 and serum starvation) cells showed no induction of autophagy. Conclusions: Our results suggest that SIRT1 regulates lipid homeostasis through LOX-1 expression regulation. Additionally, we indicate that the necessity of SIRT1 for autophagy induction in normal chondrocytes, together with its selective autophagic degradation in OA chondrocytes, could contribute to autophagy dysregulation in OA. We, therefore, suggest a novel regulatory scheme that functionally connects lipid metabolism and autophagy in late-stage OA.
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Affiliation(s)
- Aliki-Alexandra Papageorgiou
- Laboratory of Cytogenetics and Molecular Genetics, Faculty of Medicine, University of Thessaly, Biopolis, 41500 Larissa, Greece;
| | - Andreas Goutas
- Department of Biology, Faculty of Medicine, University of Thessaly, Biopolis, 41500 Larissa, Greece; (A.G.); (V.T.)
| | - Varvara Trachana
- Department of Biology, Faculty of Medicine, University of Thessaly, Biopolis, 41500 Larissa, Greece; (A.G.); (V.T.)
| | - Aspasia Tsezou
- Laboratory of Cytogenetics and Molecular Genetics, Faculty of Medicine, University of Thessaly, Biopolis, 41500 Larissa, Greece;
- Department of Biology, Faculty of Medicine, University of Thessaly, Biopolis, 41500 Larissa, Greece; (A.G.); (V.T.)
- Correspondence:
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Abstract
Cholesterol homeostasis plays a significant role in skeletal development and the dysregulation of cholesterol-related mechanism has been shown to be involved in the development of cartilage diseases including osteoarthritis (OA). Epidemiological studies have shown an association between elevated serum cholesterol levels and OA. Furthermore, abnormal lipid accumulation in chondrocytes as a result of abnormal regulation of cholesterol homeostasis has been demonstrated to be involved in the development of OA. Although, many in vivo and in vitro studies support the connection between cholesterol and cartilage degradation, the mechanisms underlying the complex interactions between lipid metabolism, especially HDL cholesterol metabolism, and OA remain unclear. The current review aims to address this problem and focuses on key molecular players of the HDL metabolism pathway and their role in ΟΑ pathogenesis. Understanding the complexity of biological processes implicated in OA pathogenesis, such as cholesterol metabolism, may lead to new targets for drug therapy of OA patients.
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Affiliation(s)
- Ioanna Papathanasiou
- Department of Biology, University of Thessaly, Faculty of Medicine, Larisa, Greece; Department of Cytogenetics and Molecular Genetics, University of Thessaly, Faculty of Medicine, Larisa, Greece
| | - Lydia Anastasopoulou
- Department of Trauma, Hand and Reconstructive Surgery, University Hospital Giessen, 35392 Giessen, Germany
| | - Aspasia Tsezou
- Department of Biology, University of Thessaly, Faculty of Medicine, Larisa, Greece; Department of Cytogenetics and Molecular Genetics, University of Thessaly, Faculty of Medicine, Larisa, Greece.
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Boer CG, Hatzikotoulas K, Southam L, Stefánsdóttir L, Zhang Y, Coutinho de Almeida R, Wu TT, Zheng J, Hartley A, Teder-Laving M, Skogholt AH, Terao C, Zengini E, Alexiadis G, Barysenka A, Bjornsdottir G, Gabrielsen ME, Gilly A, Ingvarsson T, Johnsen MB, Jonsson H, Kloppenburg M, Luetge A, Lund SH, Mägi R, Mangino M, Nelissen RRGHH, Shivakumar M, Steinberg J, Takuwa H, Thomas LF, Tuerlings M, Babis GC, Cheung JPY, Kang JH, Kraft P, Lietman SA, Samartzis D, Slagboom PE, Stefansson K, Thorsteinsdottir U, Tobias JH, Uitterlinden AG, Winsvold B, Zwart JA, Davey Smith G, Sham PC, Thorleifsson G, Gaunt TR, Morris AP, Valdes AM, Tsezou A, Cheah KSE, Ikegawa S, Hveem K, Esko T, Wilkinson JM, Meulenbelt I, Lee MTM, van Meurs JBJ, Styrkársdóttir U, Zeggini E. Deciphering osteoarthritis genetics across 826,690 individuals from 9 populations. Cell 2021; 184:4784-4818.e17. [PMID: 34450027 PMCID: PMC8459317 DOI: 10.1016/j.cell.2021.07.038] [Citation(s) in RCA: 136] [Impact Index Per Article: 45.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2020] [Revised: 03/26/2021] [Accepted: 07/30/2021] [Indexed: 12/19/2022]
Abstract
Osteoarthritis affects over 300 million people worldwide. Here, we conduct a genome-wide association study meta-analysis across 826,690 individuals (177,517 with osteoarthritis) and identify 100 independently associated risk variants across 11 osteoarthritis phenotypes, 52 of which have not been associated with the disease before. We report thumb and spine osteoarthritis risk variants and identify differences in genetic effects between weight-bearing and non-weight-bearing joints. We identify sex-specific and early age-at-onset osteoarthritis risk loci. We integrate functional genomics data from primary patient tissues (including articular cartilage, subchondral bone, and osteophytic cartilage) and identify high-confidence effector genes. We provide evidence for genetic correlation with phenotypes related to pain, the main disease symptom, and identify likely causal genes linked to neuronal processes. Our results provide insights into key molecular players in disease processes and highlight attractive drug targets to accelerate translation.
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Affiliation(s)
- Cindy G Boer
- Department of Internal Medicine, Erasmus MC, Medical Center, 3015CN Rotterdam, the Netherlands
| | - Konstantinos Hatzikotoulas
- Institute of Translational Genomics, Helmholtz Zentrum München, German Research Center for Environmental Health, 85764 Neuherberg, Germany
| | - Lorraine Southam
- Institute of Translational Genomics, Helmholtz Zentrum München, German Research Center for Environmental Health, 85764 Neuherberg, Germany
| | | | - Yanfei Zhang
- Genomic Medicine Institute, Geisinger Health System, Danville, PA 17822, USA
| | - Rodrigo Coutinho de Almeida
- Department of Biomedical Data Sciences, Section Molecular Epidemiology, Postzone S05-P Leiden University Medical Center, 2333ZC Leiden, the Netherlands
| | - Tian T Wu
- Department of Psychiatry, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Pokfulam, Hong Kong, China
| | - Jie Zheng
- MRC Integrative Epidemiology Unit (IEU), Bristol Medical School, University of Bristol, Oakfield House, Oakfield Grove, Bristol BS8 2BN, UK
| | - April Hartley
- MRC Integrative Epidemiology Unit (IEU), Bristol Medical School, University of Bristol, Oakfield House, Oakfield Grove, Bristol BS8 2BN, UK; Musculoskeletal Research Unit, Translation Health Sciences, Bristol Medical School, University of Bristol, Southmead Hospital, Bristol BS10 5NB, UK
| | - Maris Teder-Laving
- Estonian Genome Center, Institute of Genomics, University of Tartu, 51010 Tartu, Estonia
| | - Anne Heidi Skogholt
- K.G. Jebsen Center for Genetic Epidemiology, Department of Public Health and Nursing, Faculty of Medicine and Health Sciences, Norwegian University of Science and Technology, 7491 Trondheim, Norway
| | - Chikashi Terao
- Laboratory for Statistical and Translational Genetics, RIKEN Center for Integrative Medical Sciences, Kanagawa 230-0045, Japan
| | - Eleni Zengini
- 4(th) Psychiatric Department, Dromokaiteio Psychiatric Hospital, 12461 Athens, Greece
| | - George Alexiadis
- 1(st) Department of Orthopaedics, KAT General Hospital, 14561 Athens, Greece
| | - Andrei Barysenka
- Institute of Translational Genomics, Helmholtz Zentrum München, German Research Center for Environmental Health, 85764 Neuherberg, Germany
| | | | - Maiken E Gabrielsen
- K.G. Jebsen Center for Genetic Epidemiology, Department of Public Health and Nursing, Faculty of Medicine and Health Sciences, Norwegian University of Science and Technology, 7491 Trondheim, Norway
| | - Arthur Gilly
- Institute of Translational Genomics, Helmholtz Zentrum München, German Research Center for Environmental Health, 85764 Neuherberg, Germany
| | - Thorvaldur Ingvarsson
- Faculty of Medicine, University of Iceland, 101 Reykjavik, Iceland; Department of Orthopedic Surgery, Akureyri Hospital, 600 Akureyri, Iceland
| | - Marianne B Johnsen
- K.G. Jebsen Center for Genetic Epidemiology, Department of Public Health and Nursing, Faculty of Medicine and Health Sciences, Norwegian University of Science and Technology, 7491 Trondheim, Norway; Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, 0316 Oslo, Norway; Research and Communication Unit for Musculoskeletal Health (FORMI), Department of Research, Innovation and Education, Division of Clinical Neuroscience, Oslo University Hospital, 0424 Oslo, Norway
| | - Helgi Jonsson
- Department of Medicine, Landspitali The National University Hospital of Iceland, 108 Reykjavik, Iceland; Faculty of Medicine, University of Iceland, 101 Reykjavik, Iceland
| | - Margreet Kloppenburg
- Departments of Rheumatology and Clinical Epidemiology, Leiden University Medical Center, 9600, 23OORC Leiden, the Netherlands
| | - Almut Luetge
- K.G. Jebsen Center for Genetic Epidemiology, Department of Public Health and Nursing, Faculty of Medicine and Health Sciences, Norwegian University of Science and Technology, 7491 Trondheim, Norway
| | | | - Reedik Mägi
- Estonian Genome Center, Institute of Genomics, University of Tartu, 51010 Tartu, Estonia
| | - Massimo Mangino
- Department of Twin Research and Genetic Epidemiology, Kings College London, London SE1 7EH, UK
| | - Rob R G H H Nelissen
- Department of Orthopaedics, Leiden University Medical Center, 9600, 23OORC Leiden, the Netherlands
| | - Manu Shivakumar
- Department of Biostatistics, Epidemiology and Informatics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Julia Steinberg
- Institute of Translational Genomics, Helmholtz Zentrum München, German Research Center for Environmental Health, 85764 Neuherberg, Germany; Daffodil Centre, The University of Sydney, a joint venture with Cancer Council NSW, Sydney, NSW 1340, Australia
| | - Hiroshi Takuwa
- Laboratory for Bone and Joint Diseases, RIKEN Center for Integrative Medical Sciences, Tokyo 108-8639, Japan; Department of Orthopedic Surgery, Shimane University, Shimane 693-8501, Japan
| | - Laurent F Thomas
- K.G. Jebsen Center for Genetic Epidemiology, Department of Public Health and Nursing, Faculty of Medicine and Health Sciences, Norwegian University of Science and Technology, 7491 Trondheim, Norway; Department of Clinical and Molecular Medicine, Norwegian University of Science and Technology, 7491 Trondheim, Norway; BioCore-Bioinformatics Core Facility, Norwegian University of Science and Technology, 7491 Trondheim, Norway; Clinic of Laboratory Medicine, St. Olavs Hospital, Trondheim University Hospital, 7030 Trondheim, Norway
| | - Margo Tuerlings
- Department of Biomedical Data Sciences, Section Molecular Epidemiology, Postzone S05-P Leiden University Medical Center, 2333ZC Leiden, the Netherlands
| | - George C Babis
- 2(nd) Department of Orthopaedics, National and Kapodistrian University of Athens, Medical School, Nea Ionia General Hospital Konstantopouleio, 14233 Athens, Greece
| | - Jason Pui Yin Cheung
- Department of Orthopaedics and Traumatology, The University of Hong Kong, Pokfulam, Hong Kong, China
| | - Jae Hee Kang
- Department of Medicine, Brigham and Women's Hospital, 181 Longwood Ave, Boston, MA 02115, USA
| | - Peter Kraft
- Department of Epidemiology, Harvard T.H. Chan School of Public Health, 677 Huntington Avenue, Boston, MA 02115, USA
| | - Steven A Lietman
- Musculoskeletal Institute, Geisinger Health System, Danville, PA 17822, USA
| | - Dino Samartzis
- Department of Orthopaedics and Traumatology, The University of Hong Kong, Pokfulam, Hong Kong, China; Department of Orthopaedic Surgery, Rush University Medical Center, Chicago, IL 60612, USA
| | - P Eline Slagboom
- Department of Biomedical Data Sciences, Section Molecular Epidemiology, Postzone S05-P Leiden University Medical Center, 2333ZC Leiden, the Netherlands
| | - Kari Stefansson
- deCODE Genetics/Amgen Inc., 102 Reykjavik, Iceland; Faculty of Medicine, University of Iceland, 101 Reykjavik, Iceland
| | - Unnur Thorsteinsdottir
- deCODE Genetics/Amgen Inc., 102 Reykjavik, Iceland; Faculty of Medicine, University of Iceland, 101 Reykjavik, Iceland
| | - Jonathan H Tobias
- Musculoskeletal Research Unit, Translation Health Sciences, Bristol Medical School, University of Bristol, Southmead Hospital, Bristol BS10 5NB, UK; MRC Integrative Epidemiology Unit (IEU), Bristol Medical School, University of Bristol, Oakfield House, Oakfield Grove, Bristol BS8 2BN, UK
| | - André G Uitterlinden
- Department of Internal Medicine, Erasmus MC, Medical Center, 3015CN Rotterdam, the Netherlands
| | - Bendik Winsvold
- K.G. Jebsen Center for Genetic Epidemiology, Department of Public Health and Nursing, Faculty of Medicine and Health Sciences, Norwegian University of Science and Technology, 7491 Trondheim, Norway; Department of Research, Innovation and Education, Division of Clinical Neuroscience, Oslo University Hospital and University of Oslo, 0450 Oslo, Norway; Department of Neurology, Oslo University Hospital, 0424 Oslo, Norway
| | - John-Anker Zwart
- K.G. Jebsen Center for Genetic Epidemiology, Department of Public Health and Nursing, Faculty of Medicine and Health Sciences, Norwegian University of Science and Technology, 7491 Trondheim, Norway; Department of Research, Innovation and Education, Division of Clinical Neuroscience, Oslo University Hospital and University of Oslo, 0450 Oslo, Norway
| | - George Davey Smith
- MRC Integrative Epidemiology Unit (IEU), Bristol Medical School, University of Bristol, Oakfield House, Oakfield Grove, Bristol BS8 2BN, UK; Population Health Sciences, Bristol Medical School, University of Bristol, Bristol BS8 2BN, UK
| | - Pak Chung Sham
- Li Ka Shing Faculty of Medicine, The University of Hong Kong, Pokfulam, Hong Kong, China
| | | | - Tom R Gaunt
- MRC Integrative Epidemiology Unit (IEU), Bristol Medical School, University of Bristol, Oakfield House, Oakfield Grove, Bristol BS8 2BN, UK
| | - Andrew P Morris
- Centre for Genetics and Genomics Versus Arthritis, Centre for Musculoskeletal Research, University of Manchester, Manchester M13 9LJ, UK
| | - Ana M Valdes
- Faculty of Medicine and Health Sciences, School of Medicine, University of Nottingham, Nottingham, Nottinghamshire NG5 1PB, UK
| | - Aspasia Tsezou
- Laboratory of Cytogenetics and Molecular Genetics, Faculty of Medicine, University of Thessaly, Larissa 411 10, Greece
| | - Kathryn S E Cheah
- School of Biomedical Sciences, The University of Hong Kong, Pokfulam, Hong Kong, China
| | - Shiro Ikegawa
- Laboratory for Bone and Joint Diseases, RIKEN Center for Integrative Medical Sciences, Tokyo 108-8639, Japan
| | - Kristian Hveem
- K.G. Jebsen Center for Genetic Epidemiology, Department of Public Health and Nursing, Faculty of Medicine and Health Sciences, Norwegian University of Science and Technology, 7491 Trondheim, Norway; HUNT Research Center, Department of Public Health and Nursing, Faculty of Medicine and Health Sciences, Norwegian University of Science and Technology, 7600 Levanger, Norway
| | - Tõnu Esko
- Estonian Genome Center, Institute of Genomics, University of Tartu, 51010 Tartu, Estonia
| | - J Mark Wilkinson
- Department of Oncology and Metabolism and Healthy Lifespan Institute, University of Sheffield, Sheffield S10 2RX, UK
| | - Ingrid Meulenbelt
- Department of Biomedical Data Sciences, Section Molecular Epidemiology, Postzone S05-P Leiden University Medical Center, 2333ZC Leiden, the Netherlands
| | - Ming Ta Michael Lee
- Genomic Medicine Institute, Geisinger Health System, Danville, PA 17822, USA; Institute of Biomedical Sciences, Academia Sinica, 115 Taipei, Taiwan
| | - Joyce B J van Meurs
- Department of Internal Medicine, Erasmus MC, Medical Center, 3015CN Rotterdam, the Netherlands
| | | | - Eleftheria Zeggini
- Institute of Translational Genomics, Helmholtz Zentrum München, German Research Center for Environmental Health, 85764 Neuherberg, Germany; TUM School of Medicine, Technical University of Munich and Klinikum Rechts der Isar, 81675 Munich, Germany.
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9
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Abstract
AIM A recent meta-analysis of genome-wide linkage studies (GWLS) has identified multiple genetic regions suggestive of linkage with DN harboring hundreds of genes. Moving this number of genetic loci forward into biological insight is truly the next step. Here, we approach this challenge with a gene ontology (GO) analysis in order to yield biological and functional role to the genes, an over-representation test to find which GO terms are enriched in the gene list, pathway analysis, as well as protein network analysis. METHOD GO analysis was performed using protein analysis through evolutionary relationships (PANTHER) version 14.0 software and P-values less than 0.05 were considered statistically significant. GO analysis was followed by over-representation test for the identification of enriched terms. Statistical significance was calculated by Fisher's exact test and adjusted using the false discovery rate (FDR) for correction of multiple tests. Cytoscape with the relevant plugins was used for the construction of the protein network and clustering analysis. RESULTS The GO analysis assign multiple GO terms to the genes regarding the molecular function, the biological process and the cellular component, protein class and pathway analysis. The findings of the over-representation test highlight the contribution of cell adhesion regarding the biological process, integral components of plasma membrane regarding the cellular component, chemokines and cytokines with regard to protein class, while the pathway analysis emphasizes the contribution of Wnt and cadherin signaling pathways. CONCLUSIONS Our results suggest that a core feature of the pathogenesis of DN may be a disturbance in Wnt and cadherin signaling pathways, whereas the contribution of chemokines and cytokines need to be studied in additional studies.
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Affiliation(s)
- Maria Tziastoudi
- Department of Nephrology, School of Medicine, University of Thessaly, Larissa, Greece
| | - Aspasia Tsezou
- Laboratory of Biology, Faculty of Medicine, School of Health Sciences, University of Thessaly, Larissa, Greece
- Laboratory of Cytogenetics and Molecular Genetics, Faculty of Medicine, School of Health Sciences, University of Thessaly, Larissa, Greece
| | - Ioannis Stefanidis
- Department of Nephrology, School of Medicine, University of Thessaly, Larissa, Greece
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10
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Destouni A, Tsolis KC, Economou A, Papathanasiou I, Balis C, Mourmoura E, Tsezou A. Chondrocyte protein co-synthesis network analysis links ECM mechanosensing to metabolic adaptation in osteoarthritis. Expert Rev Proteomics 2021; 18:623-635. [PMID: 34348542 DOI: 10.1080/14789450.2021.1962299] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
BACKGROUND Knee osteoarthritis (OA) is one of the most common structural OA disorders globally. Incomplete understanding of the fundamental biological aspects of osteoarthritis underlies the current lack of effective treatment or disease modifying drugs. RESEARCH DESIGN AND METHODS We implemented a systems approach by making use of the statistical network concepts in Weighted Gene Co-expression Analysis to reconstruct the organization of the core proteome network in chondrocytes obtained from OA patients and healthy individuals. Protein modules reflect groups of tightly co-ordinated changes in protein abundance across healthy and OA chondrocytes. RESULTS The unbiased systems analysis identified extracellular matrix (ECM) mechanosensing and glycolysis as two modules that are most highly correlated with ΟΑ. The ECM module was enriched in the OA genetic risk factors tenascin-C (TNC) and collagen 11A1 (COL11A1), as well as in cartilage oligomeric matrix protein (COMP), a biomarker associated with cartilage integrity. Mapping proteins that are unique to OA or healthy chondrocytes onto the core interactome, which connects microenvironment sensing and regulation of glycolysis, identified differences in metabolic and anti-inflammatory adaptation. CONCLUSION The interconnection between cartilage ECM remodeling and metabolism is indicative of the dynamic chondrocyte states and their significance in osteoarthritis.
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Affiliation(s)
- Aspasia Destouni
- Laboratory of Cytogenetics and Molecular Genetics, Faculty of Medicine, University of Thessaly, Larissa, Greece
| | - Konstantinos C Tsolis
- KULeuven, Department of Microbiology, Immunology and Transplantation, Rega Institute for Medical Research, Laboratory of Molecular Bacteriology, Leuven, Belgium
| | - Anastassios Economou
- KULeuven, Department of Microbiology, Immunology and Transplantation, Rega Institute for Medical Research, Laboratory of Molecular Bacteriology, Leuven, Belgium
| | - Ioanna Papathanasiou
- Laboratory of Cytogenetics and Molecular Genetics, Faculty of Medicine, University of Thessaly, Larissa, Greece.,Department of Biology, Faculty of Medicine, University of Thessaly, Larissa, Greece
| | - Charalampos Balis
- Laboratory of Cytogenetics and Molecular Genetics, Faculty of Medicine, University of Thessaly, Larissa, Greece
| | - Evanthia Mourmoura
- Laboratory of Cytogenetics and Molecular Genetics, Faculty of Medicine, University of Thessaly, Larissa, Greece
| | - Aspasia Tsezou
- Laboratory of Cytogenetics and Molecular Genetics, Faculty of Medicine, University of Thessaly, Larissa, Greece.,Department of Biology, Faculty of Medicine, University of Thessaly, Larissa, Greece
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11
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Kottorou A, Dimitrakopoulos FI, Tsezou A. Non-coding RNAs in cancer-associated cachexia: clinical implications and future perspectives. Transl Oncol 2021; 14:101101. [PMID: 33915516 PMCID: PMC8100623 DOI: 10.1016/j.tranon.2021.101101] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2021] [Revised: 03/31/2021] [Accepted: 04/11/2021] [Indexed: 12/18/2022] Open
Abstract
Cachexia is a multifactorial syndrome characterized by skeletal muscle loss, with or without adipose atrophy, irreversible through nutritional support, in the context of systemic inflammation and metabolic disorders. It is mediated by inflammatory reaction and affects almost 50% of all cancer patients, due to prominent systemic inflammation associated with the disease. The comprehension of the molecular mechanisms that are implicated in cancer cachexia sheds light on its pathogenesis and lays the foundations for the discovery of new therapeutic targets and biomarkers. Recently, ncRNAs, like microRNAs as well as lncRNAs and circRNAs seem to regulate pathways that are implicated in cancer cachexia pathogenesis, as it has been observed in animal models and in cancer cachexia patients, highlighting their therapeutic potential. Moreover, increasing evidence highlights the involvement of circulating and exosomal ncRNAs in the activation and maintenance of systemic inflammation in cancer and cancer-associated cachexia. In that context, the present review focuses on the clinical significance of ncRNAs in cancer-associated cachexia.
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Affiliation(s)
- Anastasia Kottorou
- Molecular Oncology Laboratory, Division of Oncology, Medical School, University of Patras, 26504, Rio, Greece
| | | | - Aspasia Tsezou
- Laboratory of Biology, Faculty of Medicine, School of Health Sciences, University of Thessaly, Biopolis, 41500, Larissa, Greece; Laboratory of Cytogenetics and Molecular Genetics, Faculty of Medicine, School of Health Sciences, University of Thessaly, Biopolis, 41500, Larissa, Greece.
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12
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Sfougataki I, Varela I, Stefanaki K, Karagiannidou A, Roubelakis MG, Kalodimou V, Papathanasiou I, Traeger-Synodinos J, Kitsiou-Tzeli S, Kanavakis E, Kitra V, Tsezou A, Tzetis M, Goussetis E. Proliferative and chondrogenic potential of mesenchymal stromal cells from pluripotent and bone marrow cells. Histol Histopathol 2020; 35:1415-1426. [PMID: 32959885 DOI: 10.14670/hh-18-259] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
INTRODUCTION Mesenchymal stromal cells (MSCs) can be derived from a wide range of fetal and adult sources including pluripotent stem cells (PSCs). The properties of PSC-derived MSCs need to be fully characterized, in order to evaluate the feasibility of their use in clinical applications. PSC-MSC proliferation and differentiation potential in comparison with bone marrow (BM)-MSCs is still under investigation. The objective of this study was to determine the proliferative and chondrogenic capabilities of both human induced pluripotent stem cell (hiPSC-) and embryonic stem cell (hESC-) derived MSCs, by comparing them with BM-MSCs. METHODS MSCs were derived from two hiPSC lines (hiPSC-MSCs), the well characterized Hues9 hESC line (hESC-MSCs) and BM from two healthy donors (BM-MSCs). Proliferation potential was investigated using appropriate culture conditions, with serial passaging, until cells entered into senescence. Differentiation potential to cartilage was examined after in vitro chondrogenic culture conditions. RESULTS BM-MSCs revealed a fold expansion of 1.18x10⁵ and 2.3x10⁵ while the two hiPSC-MSC lines and hESC-MSC showed 5.88x10¹⁰, 3.49x10⁸ and 2.88x10⁸, respectively. Under chondrogenic conditions, all MSC lines showed a degree of chondrogenesis. However, when we examined the formed chondrocyte micromasses by histological analysis of the cartilage morphology and immunohistochemistry for the chondrocyte specific markers Sox9 and Collagen II, we observed that PSC-derived MSC lines had formed pink rather than hyaline cartilage, in contrast to BM-MSCs. CONCLUSION In conclusion, MSCs derived from both hESCs and hiPSCs had superior proliferative capacity compared to BM-MSCs, but they were inefficient in their ability to form hyaline cartilage.
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Affiliation(s)
- Irene Sfougataki
- Stem Cell Transplant Unit, Aghia Sophia Children's Hospital, Athens, Greece.,Research Institute for the Study of Genetic and Malignant Disorders in Childhood, Aghia Sophia Children's Hospital, Athens, Greece.
| | - Ioanna Varela
- Stem Cell Transplant Unit, Aghia Sophia Children's Hospital, Athens, Greece
| | - Kalliope Stefanaki
- Department of Histopathology, Aghia Sophia Children's Hospital, Athens, Greece
| | | | - Maria G Roubelakis
- Laboratory of Biology, Medical School, National and Kapodistrian University of Athens, Athens, Greece
| | - Vasiliki Kalodimou
- Flow Cytometry-Research and Regenerative Medicine Department, IASO Hospital, Athens, Greece
| | - Ioanna Papathanasiou
- Laboratory of Cytogenetics and Molecular Genetics, Faculty of Medicine, University of Thessally, Thessally, Greece
| | - Joanne Traeger-Synodinos
- Department of Medical Genetics, Medical School, National and Kapodistrian University of Athens, Athens, Greece
| | - Sofia Kitsiou-Tzeli
- Department of Medical Genetics, Medical School, National and Kapodistrian University of Athens, Athens, Greece
| | - Emmanuel Kanavakis
- Genesis Genoma Lab, Genetic diagnosis, Clinical Genetics and Research, Chalandri, Greece
| | - Vasiliki Kitra
- Stem Cell Transplant Unit, Aghia Sophia Children's Hospital, Athens, Greece
| | - Aspasia Tsezou
- Laboratory of Cytogenetics and Molecular Genetics, Faculty of Medicine, University of Thessally, Thessally, Greece
| | - Maria Tzetis
- Department of Medical Genetics, Medical School, National and Kapodistrian University of Athens, Athens, Greece
| | - Evgenios Goussetis
- Stem Cell Transplant Unit, Aghia Sophia Children's Hospital, Athens, Greece
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13
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Goutas A, Papathanasiou I, Mourmoura E, Tsesmelis K, Tsezou A, Trachana V. Oxidative Stress Response Is Mediated by Overexpression and Spatiotemporal Regulation of Caveolin-1. Antioxidants (Basel) 2020; 9:antiox9080766. [PMID: 32824727 PMCID: PMC7464519 DOI: 10.3390/antiox9080766] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2020] [Revised: 08/13/2020] [Accepted: 08/16/2020] [Indexed: 12/16/2022] Open
Abstract
Oxidative stress (OS) has been linked to the aetiology of many diseases including osteoarthritis (OA). Recent studies have shown that caveolin-1—a structural protein of plasma membrane’s caveolae—is upregulated in response to OS. Here, we explore the function of caveolin-1 in chondrocytes derived from healthy individuals (control) and OA patients that were subjected to exogenous OS. We showed that caveolin-1 was upregulated in response to acute OS in the control, but not in OA chondrocytes. Moreover, OS-induced DNA damage analysis revealed that control cells started repairing the DNA lesions 6 h post-oxidative treatment, while OA cells seemed unable to restore these damages. Importantly, in the control cells, we observed a translocation of caveolin-1 from the membrane/cytoplasm in and out of the nucleus, which coincided with the appearance and restoration of DNA lesions. When caveolin-1 was prevented from translocating to the nucleus, the control cells were unable to repair DNA damage. In OA cells, no such translocation of caveolin-1 was observed, which could account for their inability to repair DNA damage. Taken together, these results provide novel insights considering the role of caveolin-1 in response to OS-induced DNA damage while revealing its implication in the pathophysiology of OA.
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Affiliation(s)
- Andreas Goutas
- Laboratory of Biology, Faculty of Medicine, School of Health Sciences, University of Thessaly, Biopolis, 41500 Larissa, Greece; (A.G.); (K.T.); (A.T.)
| | - Ioanna Papathanasiou
- Laboratory of Cytogenetics and Molecular Genetics, Faculty of Medicine, School of Health Sciences, University of Thessaly, Biopolis, 41500 Larissa, Greece; (I.P.); (E.M.)
| | - Evanthia Mourmoura
- Laboratory of Cytogenetics and Molecular Genetics, Faculty of Medicine, School of Health Sciences, University of Thessaly, Biopolis, 41500 Larissa, Greece; (I.P.); (E.M.)
| | - Konstantinos Tsesmelis
- Laboratory of Biology, Faculty of Medicine, School of Health Sciences, University of Thessaly, Biopolis, 41500 Larissa, Greece; (A.G.); (K.T.); (A.T.)
| | - Aspasia Tsezou
- Laboratory of Biology, Faculty of Medicine, School of Health Sciences, University of Thessaly, Biopolis, 41500 Larissa, Greece; (A.G.); (K.T.); (A.T.)
- Laboratory of Cytogenetics and Molecular Genetics, Faculty of Medicine, School of Health Sciences, University of Thessaly, Biopolis, 41500 Larissa, Greece; (I.P.); (E.M.)
| | - Varvara Trachana
- Laboratory of Biology, Faculty of Medicine, School of Health Sciences, University of Thessaly, Biopolis, 41500 Larissa, Greece; (A.G.); (K.T.); (A.T.)
- Correspondence:
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14
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Papathanasiou I, Mourmoura E, Balis C, Tsezou A. Impact of miR-SNP rs2910164 on miR-146a expression in osteoarthritic chondrocytes. Adv Med Sci 2020; 65:78-85. [PMID: 31918067 DOI: 10.1016/j.advms.2019.12.005] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2019] [Revised: 04/04/2019] [Accepted: 12/15/2019] [Indexed: 12/17/2022]
Abstract
PURPOSE MiR-146a acts as a negative inflammatory mediator in different diseases and has been implicated in osteoarthritis (OA) pathogenesis. In our study, we investigated the association between miR-SNP rs2910164 and OA susceptibility and its role on the expression of miR-146a, inflammatory and catabolic mediators in osteoarthritic chondrocytes. MATERIALS AND METHODS Genetic association analysis was performed in 1688 knee OA patients and healthy individuals of Greek origin. Genomic DNA was extracted from blood and genotyped for rs2910164 (G > C) using Restriction-Fragment Length Polymorphism (RFLP). Total RNA was extracted from chondrocytes of 18 OA patients and miR-146a, IL-1 Receptor-Associated Kinase 1 (IRAK-1), TNF Receptor-Associated Factor 6 (TRAF-6), A Disintegrin and Metalloproteinase with Thrombospondin Motifs 5 (ADAMTS-5), Matrix Metalloproteinase-13 (MMP-13), Interleukin-6 (IL-6), Interleukin-1 Beta (IL-1β) and Tumor Necrosis Factor-Alpha (TNF-α) expression was evaluated using quantitative Real-Time PCR (qRT-PCR). RESULTS OA patients carrying rs2910164-GC and CC genotypes did not have an increased risk for OA development compared to GG genotype carriers. MiR-146a expression in OA chondrocytes was significantly lower in patients with rs2910164-GC genotype than in the GG carriers. OA patients carrying the rs2910164-GC genotype in their chondrocytes exhibited increased IRAK-1, TRAF-6, MMP-13, IL-1β and IL-6 expression levels compared with rs2910164-GG carriers. CONCLUSION We demonstrate, for the first time, that miR-SNP rs2910164 in miR-146a gene is associated with reduced miR-146a and increased inflammatory and catabolic mediators' expression in OA chondrocytes. Our data imply that genetic variations in miRNAs linked to OA pathogenesis may regulate their expression levels, suggesting new therapeutic strategies for patients with cartilage diseases.
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15
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Papathanasiou I, Balis C, Trachana V, Mourmoura E, Tsezou A. The synergistic function of miR-140-5p and miR-146a on TLR4-mediated cytokine secretion in osteoarthritic chondrocytes. Biochem Biophys Res Commun 2019; 522:783-791. [PMID: 31791577 DOI: 10.1016/j.bbrc.2019.11.168] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2019] [Accepted: 11/25/2019] [Indexed: 12/11/2022]
Abstract
ΜiR-140-5p and miR-146a regulate inflammatory pathways including TLR4/NF-κB signaling and have been found to be involved in OA pathogenesis. In this study, we investigated the effect of the synergistic function of miR-140-5p and miR-146a on inflammation mediated by TLR4 in ΟΑ chondrocytes. Bioinformatics analysis revealed that TLR4 was the only common OA-related target gene of miR-140-5p and miR-146a, located in the sub-network with the highest MCODE score; it also showed that the target genes of miR-140-5p and miR-146a which located in MCODE sub-networks were enriched in OA-related biological processes and pathways. Overexpression of miR-140-5p or miR-146a and combined miR-140-5p/miR-146a overexpression in OA chondrocytes demonstrated that combined treatment had the strongest negative effect on TLR4 expression. Moreover, simultaneous overexpression of miR-140-5p and miR-146a resulted in the highest reduction of NF-κΒ phosphorylation levels, as well as IL-1b, IL-6 and TNFa expression levels in OA chondrocytes as compared to the reductions observed when either miR-140-5p or miR-146a was overexpressed. Our results, therefore, demonstrate for the first time, that the synergistic function of miR-140-5p and miR-146a have a strong protective effect against inflammatory mediators' production in OA chondrocytes through targeting the TLR4/NF-κB signaling.
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Affiliation(s)
- Ioanna Papathanasiou
- Laboratory of Cytogenetics and Molecular Genetics, Faculty of Medicine, School of Health Sciences, University of Thessaly, Larissa, Greece
| | - Charalambos Balis
- Laboratory of Cytogenetics and Molecular Genetics, Faculty of Medicine, School of Health Sciences, University of Thessaly, Larissa, Greece
| | - Varvara Trachana
- Department of Biology, Faculty of Medicine, School of Health Sciences, University of Thessaly, Larissa, Greece
| | - Evanthia Mourmoura
- Laboratory of Cytogenetics and Molecular Genetics, Faculty of Medicine, School of Health Sciences, University of Thessaly, Larissa, Greece
| | - Aspasia Tsezou
- Laboratory of Cytogenetics and Molecular Genetics, Faculty of Medicine, School of Health Sciences, University of Thessaly, Larissa, Greece; Department of Biology, Faculty of Medicine, School of Health Sciences, University of Thessaly, Larissa, Greece.
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16
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Gkretsi V, Kalli M, Efstathiades C, Papageorgis P, Papanikolaou V, Zacharia LC, Tsezou A, Athanassiou E, Stylianopoulos T. Depletion of Ras Suppressor-1 (RSU-1) promotes cell invasion of breast cancer cells through a compensatory upregulation of a truncated isoform. Sci Rep 2019; 9:10050. [PMID: 31296919 PMCID: PMC6624310 DOI: 10.1038/s41598-019-46575-0] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2018] [Accepted: 06/21/2019] [Indexed: 01/01/2023] Open
Abstract
Extracellular matrix (ECM)-adhesion proteins and actin cytoskeleton are pivotal in cancer cell invasion. Ras Suppressor-1 (RSU-1), a cell-ECM adhesion protein that interacts with PINCH-1, thus being connected to Integrin Linked Kinase (ILK), alpha-parvin (PARVA), and actin cytoskeleton, is up-regulated in metastatic breast cancer (BC) samples. Apart from the originally-identified gene (RSU-1L), an alternatively-spliced isoform (RSU-1-X1) has been reported. We used non-invasive MCF-7 cells, expressing only RSU-1L, and highly invasive MDA-MB-231-LM2 expressing both isoforms and generated stable shRNA-transduced cells lacking RSU-1L, while the truncated RSU-1-X1 isoform was depleted by siRNA-mediated silencing. RSU-1L depletion in MCF-7 cells resulted in complete abrogation of tumor spheroid invasion in three-dimensional collagen gels, whereas it promoted MDA-MB-231-LM2 invasion, through a compensatory upregulation of RSU-1-X1. When RSU-1-X1 was also eliminated, RSU-1L-depletion-induced migration and invasion were drastically reduced being accompanied by reduced urokinase plasminogen activator expression. Protein expression analysis in 23 human BC samples corroborated our findings showing RSU-1L to be upregulated and RSU-1-X1 downregulated in metastatic samples. We demonstrate for the first time, that both RSU-1 isoforms promote invasion in vitro while RSU-1L elimination induces RSU-1-X1 upregulation to compensate for the loss. Hence, we propose that both isoforms should be blocked to effectively eliminate metastasis.
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Affiliation(s)
- Vasiliki Gkretsi
- Cancer Biophysics Laboratory, Department of Mechanical and Manufacturing Engineering, University of Cyprus, Nicosia, Cyprus. .,Biomedical Sciences Program, Department of Life Sciences, School of Sciences, European University Cyprus, Nicosia, Cyprus.
| | - Maria Kalli
- Cancer Biophysics Laboratory, Department of Mechanical and Manufacturing Engineering, University of Cyprus, Nicosia, Cyprus
| | - Christodoulos Efstathiades
- The Center for Risk and Decision Sciences (CERIDES), Department of Computer Sciences, School of Sciences, European University Cyprus, Nicosia, Cyprus
| | - Panagiotis Papageorgis
- Cancer Biophysics Laboratory, Department of Mechanical and Manufacturing Engineering, University of Cyprus, Nicosia, Cyprus.,Biological Sciences Program, Department of Life Sciences, School of Sciences, European University Cyprus, Nicosia, Cyprus
| | - Vassilios Papanikolaou
- Laboratory of Cytogenetics and Molecular Genetics, Faculty of Medicine, University of Thessaly, Larissa, Greece
| | - Lefteris C Zacharia
- Department of Life and Health Sciences, University of Nicosia, Nicosia, Cyprus
| | - Aspasia Tsezou
- Laboratory of Cytogenetics and Molecular Genetics, Faculty of Medicine, University of Thessaly, Larissa, Greece.,Department of Biology, Faculty of Medicine, University of Thessaly, Larissa, Greece
| | | | - Triantafyllos Stylianopoulos
- Cancer Biophysics Laboratory, Department of Mechanical and Manufacturing Engineering, University of Cyprus, Nicosia, Cyprus.
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17
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Papathanasiou I, Trachana V, Mourmoura E, Tsezou A. DNA methylation regulates miR-140-5p and miR-146a expression in osteoarthritis. Life Sci 2019; 228:274-284. [PMID: 31077718 DOI: 10.1016/j.lfs.2019.05.018] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2019] [Revised: 04/25/2019] [Accepted: 05/08/2019] [Indexed: 12/13/2022]
Abstract
AIMS Previous studies have demonstrated that transcriptional silencing of miRNAs due to DNA hypermethylation is associated with different pathologies. It has also been reported that abnormal expression of miR-140-5p and miR-146a is linked to osteoarthritis (OA) progression. In this study, we investigated the role of DNA methylation on miR-140-5p and miR-146a expression in OA. MAIN METHODS miR-140-5p and miR-146a expression was investigated by qRT-PCR. The methylation status of miR-140 and miR-146a regulatory regions was analyzed using qMSP and bisulfite sequencing analysis. SMAD-3 and NF-kB binding to miR-140 and miR-146a regulatory regions was assessed by ChIP assay and knockdown experiments. OA-related genes' expression was evaluated in 5-AzadC, miRNAs inhibitor and 5-AzadC/miRNAs inhibitor-treated cells. KEY FINDINGS Hypermethylation of specific CpG sites in miR-140 and miR-146a regulatory regions was associated with downregulation of miR-140-5p and miR-146a in OA chondrocytes and synoviocytes, respectively. 5-AzadC-induced miR-140-5p and miR-146a upregulation was observed in OA chondrocytes and synoviocytes. Moreover, we found decreased binding affinity of SMAD-3 and NF-kB transcription factors on the hypermethylated miR-140-5p and miR-146a regulatory regions, respectively. Downregulation of MMP-13 and ADAMTS-5 in 5-AzadC-treated OA chondrocytes was prevented by miR-140-5p inhibitor transfection. Similarly, 5-AzadC-treated OA synoviocytes showed decreased expression of IRAK-1, IL1Β and IL-6, which was reversed following 5-AzadC-/miR-146a inhibitor treatment. SIGNIFICANCE Our results strongly suggest the impact of DNA methylation on miR-140-5p and miR-146a suppression in OA chondrocytes and synoviocytes, contributing to OA pathogenesis.
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Affiliation(s)
- Ioanna Papathanasiou
- University of Thessaly, Faculty of Medicine, Laboratory of Cytogenetics and Molecular Genetics, Biopolis 41500, Larissa, Greece
| | - Varvara Trachana
- University of Thessaly, Faculty of Medicine, Department of Biology, Biopolis 41500, Larissa, Greece
| | - Evanthia Mourmoura
- University of Thessaly, Faculty of Medicine, Laboratory of Cytogenetics and Molecular Genetics, Biopolis 41500, Larissa, Greece
| | - Aspasia Tsezou
- University of Thessaly, Faculty of Medicine, Laboratory of Cytogenetics and Molecular Genetics, Biopolis 41500, Larissa, Greece; University of Thessaly, Faculty of Medicine, Department of Biology, Biopolis 41500, Larissa, Greece.
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Trachana V, Mourmoura E, Papathanasiou I, Tsezou A. Understanding the role of chondrocytes in osteoarthritis: utilizing proteomics. Expert Rev Proteomics 2019; 16:201-213. [DOI: 10.1080/14789450.2019.1571918] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Varvara Trachana
- Laboratory of Biology, Faculty of Medicine, School of Health Sciences, University of Thessaly, Larissa, Greece
| | - Evanthia Mourmoura
- Laboratory of Cytogenetics and Molecular Genetics, Faculty of Medicine, School of Health Sciences, University of Thessaly, Larissa, Greece
| | - Ioanna Papathanasiou
- Laboratory of Cytogenetics and Molecular Genetics, Faculty of Medicine, School of Health Sciences, University of Thessaly, Larissa, Greece
| | - Aspasia Tsezou
- Laboratory of Biology, Faculty of Medicine, School of Health Sciences, University of Thessaly, Larissa, Greece
- Laboratory of Cytogenetics and Molecular Genetics, Faculty of Medicine, School of Health Sciences, University of Thessaly, Larissa, Greece
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Goutas A, Syrrou C, Papathanasiou I, Tsezou A, Trachana V. The autophagic response to oxidative stress in osteoarthritic chondrocytes is deregulated. Free Radic Biol Med 2018; 126:122-132. [PMID: 30096432 DOI: 10.1016/j.freeradbiomed.2018.08.003] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/31/2018] [Revised: 07/31/2018] [Accepted: 08/01/2018] [Indexed: 01/06/2023]
Abstract
It has been reported that oxidative stress (OS) is involved in the pathogenesis of osteoarthritis (OA) and that defective autophagy is accompanying this age-related disease. Moreover, it has been proposed that induction of autophagy could serve as therapeutic mean, as it was shown to alleviate several symptoms in OA animal models. On the contrary, it is also known that autophagic death, which results from over-activation of autophagy, is also a contributor in the development of this disease. Given this discrepancy, in this study we aimed at analysing the autophagic response against acute exogenous oxidative insult of chondrocytes from healthy individuals (control) and OA patients (OA). Cells were treated with sublethal concentrations of hydrogen peroxide (H2O2) and then allowed to recover for different periods of time. Firstly, mRNA levels of autophagy-related genes (ATG5, Beclin-1 and LC3) were found significantly reduced in OA chondrocytes compared to control chondrocytes under physiological conditions. After the exposure to OS, in control cells mRNA and protein levels of these genes initially increased and decreased back to their basal levels 6-24 h after treatment. On the contrary, in OA chondrocytes the levels of autophagy-related genes remained high even 24 h post-treatment, indicating their inability to attenuate autophagy. Under the same conditions, the staining pattern of LC3, known marker of autophagosome formation, was analysed, and possible morphological differences between mitochondria of control and OA cells were microscopically assessed. These analyses revealed higher number of impaired mitochondria as well as increased autophagosome formation in OA cells as compared to control cells at all time points. Taken together, our results demonstrate a deregulation of the autophagic response against the oxidative insult in OA chondrocytes and offers insights on autophagy's role in the progression of OA.
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Affiliation(s)
- Andreas Goutas
- Laboratory of Biology, Faculty of Medicine, School of Health Sciences, University of Thessaly, Biopolis, 41500 Larissa, Greece; Laboratory of Cytogenetics and Molecular Genetics, Faculty of Medicine, School of Health Sciences, University of Thessaly, Biopolis, 41500 Larissa, Greece.
| | - Christina Syrrou
- Laboratory of Cytogenetics and Molecular Genetics, Faculty of Medicine, School of Health Sciences, University of Thessaly, Biopolis, 41500 Larissa, Greece.
| | - Ioanna Papathanasiou
- Laboratory of Cytogenetics and Molecular Genetics, Faculty of Medicine, School of Health Sciences, University of Thessaly, Biopolis, 41500 Larissa, Greece.
| | - Aspasia Tsezou
- Laboratory of Biology, Faculty of Medicine, School of Health Sciences, University of Thessaly, Biopolis, 41500 Larissa, Greece; Laboratory of Cytogenetics and Molecular Genetics, Faculty of Medicine, School of Health Sciences, University of Thessaly, Biopolis, 41500 Larissa, Greece.
| | - Varvara Trachana
- Laboratory of Biology, Faculty of Medicine, School of Health Sciences, University of Thessaly, Biopolis, 41500 Larissa, Greece.
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20
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Makrygiannis G, Mourmoura E, Spanos K, Roussas N, Kuivaniemi H, Sakalihasan N, Tsezou A, Giannoukas A. Risk Factor Assessment in a Greek Cohort of Patients With Large Abdominal Aortic Aneurysms. Angiology 2018; 70:35-40. [PMID: 29739236 DOI: 10.1177/0003319718774474] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Environmental and genetic risk factors contribute to the etiology of abdominal aortic aneurysms (AAAs). Matrix metalloproteinases (MMPs) have been associated with the pathophysiology of AAAs. A prospective, nonrandomized case-control study was undertaken to investigate the risk factors for large AAAs (≥5.5 cm) among 175 male Greek AAA patients and to compare the results with a cohort of 166 male controls free from any aortic dilatation, as confirmed by ultrasonography from an existing AAA screening program in the same region. We also assessed the potential association between 2 functional single nucleotide polymorphisms in the genes MMP9 (-1561C/T; rs3918242) and MMP13 (-77A/G; rs2252070), and the presence of large AAAs. Multiple logistic regression analysis revealed AAA family history ( P = .028), hypercholesterolemia ( P < .001), and current smoking ( P < .001) as AAA risk factors. Statistical difference was reached in genotype ( P = .047) and allele ( P = .037) frequencies for rs2252070, but the results did not remain significant after correction for multiple testing. No significant differences in genotype or allele frequencies for rs3918242 were detected. In summary, AAA family history, hypercholesterolemia, and current smoking were found to be risk factors for large AAAs.
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Affiliation(s)
- Georgios Makrygiannis
- 1 Department of Vascular Surgery, University Hospital of Larissa, Greece.,2 Department of Cardiovascular and Thoracic Surgery, University Hospital of Liège, Liège, Belgium
| | - Evanthia Mourmoura
- 3 Department of Cytogenetics and Molecular Genetics, Faculty of Medicine, University of Thessaly, Larissa, Greece
| | | | - Nikolaos Roussas
- 1 Department of Vascular Surgery, University Hospital of Larissa, Greece
| | - Helena Kuivaniemi
- 4 Division of Molecular Biology and Human Genetics, Department of Biomedical Sciences, Faculty of Medicine and Health Sciences, Stellenbosch University, Cape Town, South Africa
| | - Natzi Sakalihasan
- 2 Department of Cardiovascular and Thoracic Surgery, University Hospital of Liège, Liège, Belgium
| | - Aspasia Tsezou
- 3 Department of Cytogenetics and Molecular Genetics, Faculty of Medicine, University of Thessaly, Larissa, Greece.,5 Department of Biology, University of Thessaly, Faculty of Medicine, Larissa, Greece
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Trachana V, Ntoumou E, Anastasopoulou L, Tsezou A. Studying microRNAs in osteoarthritis: Critical overview of different analytical approaches. Mech Ageing Dev 2018; 171:15-23. [DOI: 10.1016/j.mad.2018.02.006] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2017] [Revised: 02/14/2018] [Accepted: 02/25/2018] [Indexed: 12/14/2022]
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22
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Ntoumou E, Tzetis M, Braoudaki M, Lambrou G, Poulou M, Malizos K, Stefanou N, Anastasopoulou L, Tsezou A. Serum microRNA array analysis identifies miR-140-3p, miR-33b-3p and miR-671-3p as potential osteoarthritis biomarkers involved in metabolic processes. Clin Epigenetics 2017; 9:127. [PMID: 29255496 PMCID: PMC5728069 DOI: 10.1186/s13148-017-0428-1] [Citation(s) in RCA: 100] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2017] [Accepted: 11/29/2017] [Indexed: 02/06/2023] Open
Abstract
Background MicroRNAs (miRNAs) in circulation have emerged as promising biomarkers. In this study, we aimed to identify a circulating miRNA signature for osteoarthritis (OA) patients and in combination with bioinformatics analysis to evaluate the utility of selected differentially expressed miRNAs in the serum as potential OA biomarkers. Methods Serum samples were collected from 12 primary OA patients, and 12 healthy individuals were screened using the Agilent Human miRNA Microarray platform interrogating 2549 miRNAs. Receiver Operating Characteristic (ROC) curves were constructed to evaluate the diagnostic performance of the deregulated miRNAs. Expression levels of selected miRNAs were validated by quantitative real-time PCR (qRT-PCR) in all serum and in articular cartilage samples from OA patients (n = 12) and healthy individuals (n = 7). Bioinformatics analysis was used to investigate the involved pathways and target genes for the above miRNAs. Results We identified 279 differentially expressed miRNAs in the serum of OA patients compared to controls. Two hundred and five miRNAs (73.5%) were upregulated and 74 (26.5%) downregulated. ROC analysis revealed that 77 miRNAs had area under the curve (AUC) > 0.8 and p < 0.05. Bioinformatics analysis in the 77 miRNAs revealed that their target genes were involved in multiple signaling pathways associated with OA, among which FoxO, mTOR, Wnt, pI3K/akt, TGF-β signaling pathways, ECM-receptor interaction, and fatty acid biosynthesis. qRT-PCR validation in seven selected out of the 77 miRNAs revealed 3 significantly downregulated miRNAs (hsa-miR-33b-3p, hsa-miR-671-3p, and hsa-miR-140-3p) in the serum of OA patients, which were in silico predicted to be enriched in pathways involved in metabolic processes. Target-gene analysis of hsa-miR-140-3p, hsa-miR-33b-3p, and hsa-miR-671-3p revealed that InsR and IGFR1 were common targets of all three miRNAs, highlighting their involvement in regulation of metabolic processes that contribute to OA pathology. Hsa-miR-140-3p and hsa-miR-671-3p expression levels were consistently downregulated in articular cartilage of OA patients compared to healthy individuals. Conclusions A serum miRNA signature was established for the first time using high density resolution miR-arrays in OA patients. We identified a three-miRNA signature, hsa-miR-140-3p, hsa-miR-671-3p, and hsa-miR-33b-3p, in the serum of OA patients, predicted to regulate metabolic processes, which could serve as a potential biomarker for the evaluation of OA risk and progression. Electronic supplementary material The online version of this article (10.1186/s13148-017-0428-1) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- E Ntoumou
- Laboratory of Cytogenetics and Molecular Genetics, Faculty of Medicine, Biopolis, University of Thessaly, 41500 Larissa, Greece
| | - M Tzetis
- Laboratory of Medical Genetics, Medical School, National and Kapodistrian University of Athens, Athens, Greece
| | - M Braoudaki
- Laboratory of Medical Genetics, Medical School, National and Kapodistrian University of Athens, Athens, Greece.,First Department of Pediatrics, Medical School, National and Kapodistrian University of Athens,, Athens, Greece.,University Research Institute for the Study and Treatment of Childhood Disease and Malignant Diseases, National and Kapodistrian University of Athens, "Aghia Sophia" Children's Hospital, Athens, Greece
| | - G Lambrou
- First Department of Pediatrics, Medical School, National and Kapodistrian University of Athens,, Athens, Greece.,University Research Institute for the Study and Treatment of Childhood Disease and Malignant Diseases, National and Kapodistrian University of Athens, "Aghia Sophia" Children's Hospital, Athens, Greece
| | - M Poulou
- Laboratory of Medical Genetics, Medical School, National and Kapodistrian University of Athens, Athens, Greece
| | - K Malizos
- Department of Orthopaedics, Faculty of Medicine, University of Thessaly, Larissa, Greece
| | - N Stefanou
- Department of Orthopaedics, Faculty of Medicine, University of Thessaly, Larissa, Greece
| | - L Anastasopoulou
- Laboratory of Cytogenetics and Molecular Genetics, Faculty of Medicine, Biopolis, University of Thessaly, 41500 Larissa, Greece
| | - A Tsezou
- Laboratory of Cytogenetics and Molecular Genetics, Faculty of Medicine, Biopolis, University of Thessaly, 41500 Larissa, Greece.,Department of Biology, Faculty of Medicine, University of Thessaly, Larissa, Greece
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23
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Michalitsis S, Hantes M, Thriskos P, Tsezou A, Malizos KN, Fezoulidis I, Vlychou M. Articular cartilage status 2 years after arthroscopic ACL reconstruction in patients with or without concomitant meniscal surgery: evaluation with 3.0T MR imaging. Knee Surg Sports Traumatol Arthrosc 2017; 25:437-444. [PMID: 27141867 DOI: 10.1007/s00167-016-4153-7] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/15/2015] [Accepted: 04/26/2016] [Indexed: 10/21/2022]
Abstract
PURPOSE To assess articular cartilage changes in the knee joint as detected on 3.0T MR imaging after 2-year follow-up in patients who underwent arthroscopic anterior cruciate ligament reconstruction (ACLR) with or without concomitant meniscal surgery. METHODS A total of twenty-nine patients (mean age 30.3 ± 10 years), who underwent arthroscopic ACLR, received clinical and imaging follow-up at an average of 27.8 ± 4.8 months after surgery. Our patients were divided into two subgroups: eighteen patients with additional meniscal injuries at the time of arthroscopic ACLR who underwent meniscal surgery and eleven patients with intact menisci. The cartilage status of all knees at the time of arthroscopic ACLR was recorded. All patients underwent an MRI scan preoperatively and at follow-up with the same imaging protocol. Cartilage status of all knee compartments was evaluated at the time of follow-up by MR imaging and the ICRS classification. RESULTS Deterioration of the cartilage status was found at all knee compartments of our study group, with respect to the number of cartilage defects. The cartilage of the lateral femoral condyle (LFC) was most severely affected, followed by patellar and medial femoral condyle (MFC) cartilage. A statistically significant relation was found between surgery of the medial meniscus and the development of new cartilage defects in LFC (p = 0.01) and MFC (p = 0.03) after adjusting for the site of meniscal surgery. The cartilage of LFC and the status of the medial meniscus were also found to be significantly related (p = 0.04). Partial meniscectomy was found to be associated with an increased incidence of new cartilage defects when compared to either meniscal repair or absence of meniscal surgery, although it was not statistically significant. CONCLUSION Development of new cartilage lesions was evident after 2-year follow-up in patients with arthroscopic ACLR as detected by MR imaging. There was a multicompartmental pattern of cartilage involvement, and the lateral compartment was most severely affected. Partial meniscectomy at the time of arthroscopic ACLR could be suggested as an additional risk factor for the progression of chondral lesions. LEVEL OF EVIDENCE Prospective comparative study, Level II.
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Affiliation(s)
- S Michalitsis
- Department of Orthopedics, University Hospital of Larissa, Larissa, Greece
| | - M Hantes
- Department of Orthopedics, University Hospital of Larissa, Larissa, Greece
| | - P Thriskos
- Department of Radiology, University Hospital of Larissa, Biopolis, 41110, Larissa, Greece
| | - A Tsezou
- Laboratory of Molecular Genetics, University Hospital of Larissa, Larissa, Greece
| | - K N Malizos
- Department of Orthopedics, University Hospital of Larissa, Larissa, Greece
| | - I Fezoulidis
- Department of Radiology, University Hospital of Larissa, Biopolis, 41110, Larissa, Greece
| | - M Vlychou
- Department of Radiology, University Hospital of Larissa, Biopolis, 41110, Larissa, Greece.
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24
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van der Kraan PM, Berenbaum F, Blanco FJ, Cosimo DB, Lafeber F, Hauge E, Higginbottom A, Ioan-Facsinay A, Loughlin J, Meulenbelt I, Moilanen E, Pitsillidou I, Tsezou A, van Meurs J, Vincent T, Wittoek R, Lories R. Translation of clinical problems in osteoarthritis into pathophysiological research goals. RMD Open 2016; 2:e000224. [PMID: 27252894 PMCID: PMC4885448 DOI: 10.1136/rmdopen-2015-000224] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2015] [Revised: 02/29/2016] [Accepted: 03/07/2016] [Indexed: 11/04/2022] Open
Abstract
Osteoarthritis (OA) accounts for more disability among the elderly than any other disease and is associated with an increased mortality rate. The prevalence in Europe will rise in the future since this continent has a strongly ageing population and an obesity epidemic; obesity and age both being major risk factors for OA. No adequate therapeutic options, besides joint replacement, are available, although they are greatly needed and should be acquired by adequate research investments. However, the perspective on OA from a researcher's point of view is not always aligned with the perspective of a patient with OA. Researchers base their views on OA mainly on abnormalities in structure and function while patients consider OA as a collection of symptoms. In this viewpoint paper, we discuss the possibility of translating the most important clinical problems into pathophysiological research goals to facilitate the translation from bench to bedside and vice versa. This viewpoint is the outcome of a dialogue within the 'European League Against Rheumatism study group on OA' and People with Arthritis/Rheumatism across Europe (PARE) representatives.
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Affiliation(s)
- Peter M van der Kraan
- Department of Experimental Rheumatology , Radboud University Medical Center , Nijmegen , The Netherlands
| | - Francis Berenbaum
- Faculty of Medicine Pierre and Marie Curie Paris VI , INSERM UMR-S938, Saint-Antoine Hospital , Paris , France
| | - Francisco J Blanco
- Rheumatology Division , Instituto de Investigación Biomédica de A Coruña (INIBIC), Complexo Hospitalario Universitario de A Coruña (CHUAC), Sergas, Universidade da Coruña (UDC) , A Coruña , España
| | - de Bari Cosimo
- Musculoskeletal Research Programme, Institute of Medical Sciences, Foresterhill , Aberdeen , UK
| | - Floris Lafeber
- Department of Rheumatology and Clinical Immunology , University Medical Centre Utrecht , Utrecht , The Netherlands
| | - Ellen Hauge
- Department of Clinical Medicine, The Section for Rheumatology, Aarhus , Denmark
| | - Adele Higginbottom
- EULAR PARE Patient Research Partner and Keele University, Newcastle-under-Lyme, UK
| | - Andreea Ioan-Facsinay
- Department of Rheumatology , Leiden University Medical Center , Leiden , The Netherlands
| | - John Loughlin
- Musculoskeletal Research Group , Newcastle University, Institute of Cellular Medicine, The Medical School , Newcastle upon Tyne , UK
| | - Ingrid Meulenbelt
- Department of Molecular Epidemiology , LUMC , Leiden , The Netherlands
| | - Eeva Moilanen
- The Immunopharmacology Research Group , University of Tampere School of Medicine and Tampere University Hospital , Tampere , Finland
| | | | - Aspasia Tsezou
- Department of Biology , University of Thessaly, School of Medicine , Larissa , Greece
| | - Joyce van Meurs
- Genetic Laboratory, Department of Internal Medicine , Erasmus MC , Rotterdam , The Netherlands
| | - Tonia Vincent
- ARUK Centre for OA Pathogenesis, University of Oxford , Oxford , UK
| | - Ruth Wittoek
- Department of Rheumatology , University Hospital Ghent , Ghent , Belgium
| | - Rik Lories
- Laboratory of Tissue Homeostasis and Disease, Department of Development and Regeneration, KU Leuven and Division of Rheumatology , Skeletal Biology and Engineering Research Center, University Hospitals Leuven , Leuven , Belgium
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25
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Katsiani E, Garas A, Skentou C, Tsezou A, Messini CI, Dafopoulos K, Daponte A, Messinis IE. Chorionic villi derived mesenchymal like stem cells and expression of embryonic stem cells markers during long-term culturing. Cell Tissue Bank 2016; 17:517-29. [PMID: 27139894 DOI: 10.1007/s10561-016-9559-4] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2015] [Accepted: 04/26/2016] [Indexed: 01/28/2023]
Abstract
Mesenchymal stem cells (MSCs) can be obtained from a variety of human tissues. MSCs derived from placental chorionic villi of the first trimester are likely to resemble, biologically, embryonic stem cells (ESC), due to the earlier development stage of placenta. In the present study long-term cultures of MSC-like cells were assessed in order to evaluate MSCs multipotent characteristics and molecular features during the period of culture. CV-cells obtained from 10 samples of chorionic villus displayed typical fibroblastoid morphology, undergone 20 passages during a period of 120 days, maintaining a stable karyotype throughout long term expansion. The cells were positive, for CD90, CD73, CD105, CD29, CD44, HLA ABC antigens and negative for CD14, CD34, AC133, and HLA DR antigens as resulted from the flow cytometry analysis. CV-cells were differentiated in adipocytes, osteoblasts, chondrocytes and neuronal cells under specific culture conditions. The expression of the ESC-gene markers POU5F1 (Oct-4) and NANOG was observed at earliest stages (4-12 passages) and not at the late stages (14-20 passages) by RT-PCR analysis. ZFP42 and SOX2 expression were not detected. Moreover, CV-cells were found to express GATA4 but not NES (Nestin). Chorionic villi-derived cells possess multipotent properties, display high proliferation rate and self-renew capacity, share common surface antigens with adult MSCs and express certain embryonics stem cells gene markers. These characteristics highlight chorionic villi as an attractive source of MSCs for the needs of regenerative medicine.
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Affiliation(s)
- E Katsiani
- Department of Obstetrics and Gynaecology, Medical School, University Hospital, University of Thessaly, Larissa, Greece
| | - A Garas
- Department of Obstetrics and Gynaecology, Medical School, University Hospital, University of Thessaly, Larissa, Greece
| | - C Skentou
- Department of Obstetrics and Gynaecology, Medical School, University Hospital, University of Thessaly, Larissa, Greece
| | - A Tsezou
- Department of Biology and Laboratory of Cytogenetics and Molecular Genetics, Medical School, University Hospital, University of Thessaly, Larissa, Greece
| | - C I Messini
- Department of Obstetrics and Gynaecology, Medical School, University Hospital, University of Thessaly, Larissa, Greece
| | - K Dafopoulos
- Department of Obstetrics and Gynaecology, Medical School, University Hospital, University of Thessaly, Larissa, Greece
| | - A Daponte
- Department of Obstetrics and Gynaecology, Medical School, University Hospital, University of Thessaly, Larissa, Greece
| | - I E Messinis
- Department of Obstetrics and Gynaecology, Medical School, University Hospital, University of Thessaly, Larissa, Greece. .,Department of Obstetrics and Gynaecology, School of Health Sciences, Faculty of Medicine, University of Thessaly, 41110, Viopolis, Larissa, Greece.
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26
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Mourmoura E, Vasilaki A, Giannoukas A, Michalodimitrakis E, Pavlidis P, Tsezou A. Evidence of deregulated cholesterol efflux in abdominal aortic aneurysm. Acta Histochem 2016; 118:97-108. [PMID: 26725543 DOI: 10.1016/j.acthis.2015.11.012] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2015] [Revised: 11/24/2015] [Accepted: 11/30/2015] [Indexed: 11/17/2022]
Abstract
Previous studies indicated that lipids may be associated with abdominal aortic aneurysm (AAA); however the molecular mechanism involved is unclear. Our study aimed to investigate the expression pattern of cholesterol efflux related proteins in AAA. Liver X receptors (LXRα and LXRβ), ATP-binding-cassette transporter A1 (ABCA1), Apolipoprotein AI (ApoAI), smooth muscle α-actin (α-SM) and vimentin expression levels were evaluated in human AAA, atherosclerotic (ATH) and normal abdominal aortic tissues. We found significant differences in LXRα, LXRβ and ABCA1 mRNA expression levels between AAA, ATH and normal whole aortic tissues and also within the AAA, ATH and normal "intima-media" layers. Specifically, LXRα, LXRβ and ABCA1 mRNA levels were decreased in AAA compared to ATH-whole tissues, as well as in AAA "intima-media" compared to ATH and normal "intima-media" layers. Moreover, immunohistochemical evaluation revealed that LXRα and ABCA1 immunoreactivities (IR) were reduced in the AAA media compared to the normal and ATH media layers and that they were also reduced in the intima layer of AAA and ATH tissues, whereas ApoAI-IR was increased in the AAA and ATH aortic walls compared to normal pointing to possible deregulation of the cholesterol efflux mechanism in AAA. Furthermore, double staining for vimentin and α-SM showed vimentin expression in the intima and inner media layer of AAA with sparse vimentin positive SMCs designating possible SMCs phenotype switch from contractile to synthetic form. In addition, histochemical analysis showed excessive lipid accumulation in the AAA wall, while co-staining using Oil Red O with α-SM or CD68 revealed lipid accumulation in SMCs and macrophages, respectively. Our study provides novel evidence for impaired cholesterol efflux in AAA associated with lipid accumulation in SMCs and macrophages, as well as switch of SMCs phenotype from contractile to synthetic form.
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Affiliation(s)
- Evanthia Mourmoura
- University of Thessaly, Faculty of Medicine, Department of Cytogenetics and Molecular Genetics, Biopolis, Larissa 41100, Greece
| | - Anna Vasilaki
- University of Thessaly, Faculty of Medicine, Department of Pharmacology, Biopolis, Larissa 41100, Greece
| | - Athanasios Giannoukas
- University of Thessaly, Faculty of Medicine, Department of Vascular Surgery, Mezourlo, Larissa 41100, Greece
| | | | - Pavlos Pavlidis
- Democritus University of Thrace, Faculty of Medicine, Department of Forensic Medicine, Alexandroupolis 68100, Greece
| | - Aspasia Tsezou
- University of Thessaly, Faculty of Medicine, Department of Cytogenetics and Molecular Genetics, Biopolis, Larissa 41100, Greece; University of Thessaly, Faculty of Medicine, Department of Biology, Biopolis, Larissa 41100, Greece.
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Papathanasiou I, Michalitsis S, Hantes ME, Vlychou M, Anastasopoulou L, Malizos KN, Tsezou A. Molecular changes indicative of cartilage degeneration and osteoarthritis development in patients with anterior cruciate ligament injury. BMC Musculoskelet Disord 2016; 17:21. [PMID: 26762166 PMCID: PMC4712525 DOI: 10.1186/s12891-016-0871-8] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/16/2015] [Accepted: 01/05/2016] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND Anterior cruciate ligament (ACL) tear is considered a risk factor for osteoarthritis development. The purpose of our study was to investigate the expression levels of the apoptotic enzyme caspase 3, pro-inflammatory cytokines interleukin-1β (IL-1β) and interleukin-6 (IL-6) and degrading enzyme matrix metalloproteinase 13 (MMP-13), all indicative of cartilage degeneration and osteoarthritis development in patients' chondrocytes after ACL rupture. METHODS We investigated the correlation between grade of cartilage degradation and time from injury or patients' age. IL-1β, IL-6 and MMP-13 mRNA expression levels were investigated in normal (n = 4) and chondrocytes from patients with ACL rupture (n = 33) using real-time polymerase chain reaction (PCR). Moreover, MMP-13 and caspase-3 protein expression levels were evaluated by western blot analysis. Trend analysis and correlation coefficient were performed to derive the relations between gene expression (MMP13, IL-6, IL-1β) and grading of cartilage defects and between gene expression (MMP13, IL-6, IL-1β) and patients' age, respectively. RESULTS Correlations were established between grade of cartilage degradation and time from injury. MMP-13, IL-6, IL-1β and caspase 3 expression levels were significantly upregulated in chondrocytes from ACL-deficient knee compared to normal. Among the patients with ACL-deficient knees, a significant upregulation of MMP-13 was observed in patients with ACL-rupture > 18 months from the time of injury to arthroscopy compared to patients with ACL-injury up to 18 months, whereas IL-6 and IL-1β expression was higher in chondrocytes from patients with more than 10 months ACL injury compared to those that underwent surgery within the first 10 months after injury. Νο association was observed between IL-1β, IL-6 and MMP-13 expression levels and cartilage defects or patients' age. CONCLUSION Our results showed that increased levels of apoptotic, inflammatory and catabolic factors in chondrocytes are associated with time from injury and could contribute to cartilage degradation and osteoarthritis development after ACL rupture.
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Affiliation(s)
- Ioanna Papathanasiou
- Laboratory of Cytogenetics and Molecular Genetics, University of Thessaly, Faculty of Medicine, Biopolis, 41500, Larissa, Greece.
| | - Sotirios Michalitsis
- Department of Orthopaedic Surgery, University of Thessaly, Faculty of Medicine, Biopolis, 41500, Larissa, Greece.
| | - Michael E Hantes
- Department of Orthopaedic Surgery, University of Thessaly, Faculty of Medicine, Biopolis, 41500, Larissa, Greece.
| | - Marianna Vlychou
- Department of Radiology, University of Thessaly, Faculty of Medicine, Biopolis, 41500, Larissa, Greece.
| | - Lydia Anastasopoulou
- Laboratory of Cytogenetics and Molecular Genetics, University of Thessaly, Faculty of Medicine, Biopolis, 41500, Larissa, Greece.
| | - Konstantinos N Malizos
- Department of Orthopaedic Surgery, University of Thessaly, Faculty of Medicine, Biopolis, 41500, Larissa, Greece.
| | - Aspasia Tsezou
- Laboratory of Cytogenetics and Molecular Genetics, University of Thessaly, Faculty of Medicine, Biopolis, 41500, Larissa, Greece. .,Department of Biology, University of Thessaly, Faculty of Medicine, Biopolis, 41500, Larissa, Greece.
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Papathanasiou I, Kostopoulou F, Malizos KN, Tsezou A. DNA methylation regulates sclerostin (SOST) expression in osteoarthritic chondrocytes by bone morphogenetic protein 2 (BMP-2) induced changes in Smads binding affinity to the CpG region of SOST promoter. Arthritis Res Ther 2015; 17:160. [PMID: 26071314 PMCID: PMC4491261 DOI: 10.1186/s13075-015-0674-6] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2014] [Accepted: 06/05/2015] [Indexed: 11/10/2022] Open
Abstract
Introduction Sclerostin (SOST), a soluble antagonist of Wnt signaling, is expressed in chondrocytes and contributes to chondrocytes’ hypertrophic differentiation; however its role in osteoarthritis (OA) pathogenesis is not well known. Based on our previous findings on the interaction between Wnt/β-catenin pathway and BMP-2 in OA, we aimed to investigate the role of DNA methylation and BMP-2 on SOST’s expression in OA chondrocytes. Methods SOST mRNA and protein expression levels were investigated using real-time polymerase chain reaction (PCR) and Western blot, respectively. The methylation status of SOST promoter was analysed using methylation-specific PCR (MSP), quantitative methylation-specific PCR (qMSP) and bisulfite sequencing analysis. The effect of BMP-2 and 5’-Aza-2-deoxycytidine (5-AzadC) on SOST’s expression levels were investigated and Smad1/5/8 binding to SOST promoter was assessed by Chromatin Immunoprecipitation (ChΙP). Results We observed that SOST’s expression was upregulated in OA chondrocytes compared to normal. Moreover, we found that the CpG region of SOST promoter was hypomethylated in OA chondrocytes and 5-AzadC treatment in normal chondrocytes resulted in decreased SOST methylation, whereas its expression was upregulated. BMP-2 treatment in 5-AzadC-treated normal chondrocytes resulted in SOST upregulation, which was mediated through Smad 1/5/8 binding on the CpG region of SOST promoter. Conclusions We report novel findings that DNA methylation regulates SOST’s expression in OA, by changing Smad 1/5/8 binding affinity to SOST promoter, providing evidence that changes in DNA methylation pattern could underlie changes in genes’ expression observed in OA.
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Affiliation(s)
- Ioanna Papathanasiou
- Laboratory of Cytogenetics and Molecular Genetics, University of Thessaly, Faculty of Medicine, Biopolis, Larissa, 41500, Greece.
| | - Fotini Kostopoulou
- Laboratory of Cytogenetics and Molecular Genetics, University of Thessaly, Faculty of Medicine, Biopolis, Larissa, 41500, Greece.
| | - Konstantinos N Malizos
- Department of Orthopaedic Surgery, University of Thessaly, Faculty of Medicine, Biopolis, Larissa, 41500, Greece.
| | - Aspasia Tsezou
- Laboratory of Cytogenetics and Molecular Genetics, University of Thessaly, Faculty of Medicine, Biopolis, Larissa, 41500, Greece. .,Department of Biology, University of Thessaly, Faculty of Medicine, Biopolis, Larissa, 41500, Greece.
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Tsolis KC, Bei ES, Papathanasiou I, Kostopoulou F, Gkretsi V, Kalantzaki K, Malizos K, Zervakis M, Tsezou A, Economou A. Comparative proteomic analysis of hypertrophic chondrocytes in osteoarthritis. Clin Proteomics 2015; 12:12. [PMID: 25945082 PMCID: PMC4415313 DOI: 10.1186/s12014-015-9085-6] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2015] [Accepted: 04/15/2015] [Indexed: 02/07/2023] Open
Abstract
Background Osteoarthritis (OA) is a multi-factorial disease leading progressively to loss of articular cartilage and subsequently to loss of joint function. While hypertrophy of chondrocytes is a physiological process implicated in the longitudinal growth of long bones, hypertrophy-like alterations in chondrocytes play a major role in OA. We performed a quantitative proteomic analysis in osteoarthritic and normal chondrocytes followed by functional analyses to investigate proteome changes and molecular pathways involved in OA pathogenesis. Methods Chondrocytes were isolated from articular cartilage of ten patients with primary OA undergoing knee replacement surgery and six normal donors undergoing fracture repair surgery without history of joint disease and no OA clinical manifestations. We analyzed the proteome of chondrocytes using high resolution mass spectrometry and quantified it by label-free quantification and western blot analysis. We also used WebGestalt, a web-based enrichment tool for the functional annotation and pathway analysis of the differentially synthesized proteins, using the Wikipathways database. ClueGO, a Cytoscape plug-in, is also used to compare groups of proteins and to visualize the functionally organized Gene Ontology (GO) terms and pathways in the form of dynamical network structures. Results The proteomic analysis led to the identification of a total of ~2400 proteins. 269 of them showed differential synthesis levels between the two groups. Using functional annotation, we found that proteins belonging to pathways associated with regulation of the actin cytoskeleton, EGF/EGFR, TGF-β, MAPK signaling, integrin-mediated cell adhesion, and lipid metabolism were significantly enriched in the OA samples (p ≤10−5). We also observed that the proteins GSTP1, PLS3, MYOF, HSD17B12, PRDX2, APCS, PLA2G2A SERPINH1/HSP47 and MVP, show distinct synthesis levels, characteristic for OA or control chondrocytes. Conclusion In this study we compared the quantitative changes in proteins synthesized in osteoarthritic compared to normal chondrocytes. We identified several pathways and proteins to be associated with OA chondrocytes. This study provides evidence for further testing on the molecular mechanism of the disease and also propose proteins as candidate markers of OA chondrocyte phenotype. Electronic supplementary material The online version of this article (doi:10.1186/s12014-015-9085-6) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Konstantinos C Tsolis
- Institute of Molecular Biology and Biotechnology - FoRTH, Iraklio, Greece ; Department of Microbiology and Immunology, Rega Institute for Medical Research, KULeuven, Leuven, Belgium
| | - Ekaterini S Bei
- School of Electronic and Computer Engineering, Technical Univ. of Crete, Chania, Greece
| | - Ioanna Papathanasiou
- Department of Biology, University of Thessaly, Faculty of Medicine, Larissa, Greece ; Institute for Research & Technology-Thessaly/Centre for Research & Technology-Hellas (CE.R.T.H), Larissa, Greece
| | - Fotini Kostopoulou
- Department of Biology, University of Thessaly, Faculty of Medicine, Larissa, Greece ; Institute for Research & Technology-Thessaly/Centre for Research & Technology-Hellas (CE.R.T.H), Larissa, Greece
| | - Vassiliki Gkretsi
- Institute for Research & Technology-Thessaly/Centre for Research & Technology-Hellas (CE.R.T.H), Larissa, Greece
| | - Kalliopi Kalantzaki
- School of Electronic and Computer Engineering, Technical Univ. of Crete, Chania, Greece
| | - Konstantinos Malizos
- Department of Orthopedics, University of Thessaly, Faculty of Medicine, Larissa, Greece
| | - Michalis Zervakis
- School of Electronic and Computer Engineering, Technical Univ. of Crete, Chania, Greece
| | - Aspasia Tsezou
- Department of Biology, University of Thessaly, Faculty of Medicine, Larissa, Greece ; Institute for Research & Technology-Thessaly/Centre for Research & Technology-Hellas (CE.R.T.H), Larissa, Greece
| | - Anastassios Economou
- Institute of Molecular Biology and Biotechnology - FoRTH, Iraklio, Greece ; Department of Microbiology and Immunology, Rega Institute for Medical Research, KULeuven, Leuven, Belgium
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Stefanidis I, Voliotis G, Papanikolaou V, Chronopoulou I, Eleftheriadis T, Kowald A, Zintzaras E, Tsezou A. Telomere Length in Peripheral Blood Mononuclear Cells of Patients on Chronic Hemodialysis Is Related With Telomerase Activity and Treatment Duration. Artif Organs 2015; 39:756-64. [DOI: 10.1111/aor.12453] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
| | | | - Vassilios Papanikolaou
- Laboratory of Cytogenetics and Molecular Genetics; University of Thessaly; Larissa Greece
- Laboratory of Medical Genetics; Center of Research and Technology Thessaly; Larissa Greece
| | | | | | - Axel Kowald
- Centre for Integrated Systems Biology of Ageing and Nutrition; Institute for Ageing and Health; Newcastle University; Newcastle UK
| | - Elias Zintzaras
- Laboratory of Biometry and Biomathematics; Faculty of Medicine; University of Thessaly; Larissa Greece
- Institute for Clinical Research and Health Policy Studies; Tufts University School of Medicine; Boston MA USA
| | - Aspasia Tsezou
- Laboratory of Cytogenetics and Molecular Genetics; University of Thessaly; Larissa Greece
- Laboratory of Medical Genetics; Center of Research and Technology Thessaly; Larissa Greece
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Kostopoulou F, Malizos KN, Papathanasiou I, Tsezou A. MicroRNA-33a regulates cholesterol synthesis and cholesterol efflux-related genes in osteoarthritic chondrocytes. Arthritis Res Ther 2015; 17:42. [PMID: 25880168 PMCID: PMC4375845 DOI: 10.1186/s13075-015-0556-y] [Citation(s) in RCA: 49] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2014] [Accepted: 02/13/2015] [Indexed: 02/08/2023] Open
Abstract
Introduction Several studies have shown that osteoarthritis (OA) is strongly associated with metabolism-related disorders, highlighting OA as the fifth component of the metabolic syndrome (MetS). On the basis of our previous findings on dysregulation of cholesterol homeostasis in OA, we were prompted to investigate whether microRNA-33a (miR-33a), one of the master regulators of cholesterol and fatty acid metabolism, plays a key role in OA pathogenesis. Methods Articular cartilage samples were obtained from 14 patients with primary OA undergoing total knee replacement surgery. Normal cartilage was obtained from nine individuals undergoing fracture repair surgery. Bioinformatics analysis was used to identify miR-33a target genes. miR-33a and sterol regulatory element-binding protein 2 (SREBP-2) expression levels were investigated using real-time PCR, and their expression was also assessed after treatment with transforming growth factor-β1 (TGF-β1) in cultured chondrocytes. Akt phosphorylation after treatment with both TGF-β1 and miR-33a inhibitor or TGF-β1 and miR-33a mimic was assessed by Western blot analysis. Furthermore, we evaluated the effect of miR-33a mimic and miR-33a inhibitor on Smad7, a negative regulator of TGF-β signaling, on cholesterol efflux-related genes, ATP-binding cassette transporter A1 (ABCA1), apolipoprotein A1 (ApoA1) and liver X receptors (LXRα and LXRβ), as well as on matrix metalloproteinase-13 (MMP-13), using real-time PCR. Results We found that the expression of miR-33a and its host gene SREBP-2 was significantly elevated in OA chondrocytes compared with normal chondrocytes. Treatment of cultured chondrocytes with TGF-β1 resulted in increased expression of both miR-33a and SREBP-2, as well as in rapid induction of Akt phosphorylation, whereas TGF-β-induced Akt phosphorylation was enhanced by miR-33a and suppressed by inhibition of miR-33a, as a possible consequence of Smad7 regulation by miR-33a. Moreover, treatment of normal chondrocytes with miR-33a resulted in significantly reduced ABCA1 and ApoA1 mRNA expression levels and significantly elevated MMP-13 expression levels, promoting the OA phenotype, whereas miR-33a’s suppressive effect was reversed using its inhibitor. Conclusions Our findings suggest, for the first time to our knowledge, that miR-33a regulates cholesterol synthesis through the TGF-β1/Akt/SREBP-2 pathway, as well as cholesterol efflux-related genes ABCA1 and ApoA1, in OA chondrocytes, pointing to its identification as a novel target for ameliorating the OA phenotype.
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Affiliation(s)
- Fotini Kostopoulou
- Department of Cytogenetics and Molecular Genetics, School of Medicine, University of Thessaly, Biopolis, 41110, Larissa, Greece. .,Center for Research and Technology Hellas (CERTH), 6th Km Charilaou-Thermi Road, PO Box 60361, GR 57001 Thermi, Thessaloniki, Greece.
| | - Konstantinos N Malizos
- Center for Research and Technology Hellas (CERTH), 6th Km Charilaou-Thermi Road, PO Box 60361, GR 57001 Thermi, Thessaloniki, Greece. .,Department of Orthopaedics, School of Medicine, University of Thessaly, Biopolis, 41110, Larissa, Greece.
| | - Ioanna Papathanasiou
- Department of Cytogenetics and Molecular Genetics, School of Medicine, University of Thessaly, Biopolis, 41110, Larissa, Greece.
| | - Aspasia Tsezou
- Department of Cytogenetics and Molecular Genetics, School of Medicine, University of Thessaly, Biopolis, 41110, Larissa, Greece. .,Center for Research and Technology Hellas (CERTH), 6th Km Charilaou-Thermi Road, PO Box 60361, GR 57001 Thermi, Thessaloniki, Greece. .,Department of Biology, School of Medicine, University of Thessaly, Biopolis, 41110, Larissa, Greece.
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Giotopoulou N, Valiakou V, Papanikolaou V, Dubos S, Athanassiou E, Tsezou A, Zacharia LC, Gkretsi V. Ras suppressor-1 promotes apoptosis in breast cancer cells by inhibiting PINCH-1 and activating p53-upregulated-modulator of apoptosis (PUMA); verification from metastatic breast cancer human samples. Clin Exp Metastasis 2015; 32:255-65. [PMID: 25647720 DOI: 10.1007/s10585-015-9701-x] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2014] [Accepted: 01/26/2015] [Indexed: 10/24/2022]
Abstract
Metastasis, responsible for most deaths from breast cancer (BC), is a multistep process leading to cancer cell spread. Extracellular matrix (ECM)-related adhesion and apoptosis resistance play pivotal role in metastasis. Ras suppressor-1 (RSU-1) localizes to cell-ECM adhesions and binds to pro-survival adhesion protein PINCH-1. Little is known about the role of RSU-1 in BC. In the present study, we investigated the role of RSU-1 in BC metastasis using two BC cell lines that differ in terms of their metastatic potential and a set of 32 human BC samples from patients with or without lymph node metastasis. We show that RSU-1 is upregulated in the aggressive MDA-MB-231 cells compared to MCF-7 and that its silencing by siRNA leads to upregulation of PINCH-1, induction of proliferation and reduction of apoptosis through downregulation of the pro-apoptotic gene p53-upregulated-modulator-of-apoptosis (PUMA). Our findings in the cell lines were further validated in the human BC tissues where normal adjacent tissues were used as controls. We demonstrate for the first time, that RSU-1 expression is upregulated in metastatic BC samples and downregulated in non-metastatic while it is negatively correlated with PINCH-1 and positively correlated with PUMA expression, suggesting that a pro-apoptotic mechanism is in place in metastatic BC samples and identifying RSU-1 as a potentially interesting molecule that needs to be evaluated further as a novel BC metastasis biomarker.
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Affiliation(s)
- Nikolina Giotopoulou
- Centre for Research and Technology-Hellas (CE.R.T.H.), Institute for Research and Technology-Thessaly, 51 Papanastasiou Street, 41222, Larissa, Greece
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Papanikolaou V, Stefanou N, Dubos S, Papathanasiou I, Palianopoulou M, Valiakou V, Tsezou A. Synergy of leptin/STAT3 with HER2 receptor induces tamoxifen resistance in breast cancer cells through regulation of apoptosis-related genes. Cell Oncol (Dordr) 2014; 38:155-64. [PMID: 25539992 DOI: 10.1007/s13402-014-0213-5] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/12/2014] [Indexed: 01/09/2023] Open
Abstract
PURPOSE Tamoxifen is a major treatment modality for estrogen receptor positive breast cancer, but the occurrence of resistance remains a problem. Recently, obesity-related leptin has been found to interfere with tamoxifen in breast cancer MCF-7 cells. In the present study we investigated the effect of leptin on three tamoxifen-treated breast cancer cell types (i.e., MDA-MB-231, MCF-7 and MCF-7/HER2). METHODS The effect of tamoxifen/leptin treatment was evaluated using a MTT cell viability assay. mRNA expression was assessed by real time PCR and protein expression by Western blotting. WWOX, Survivin and BCL2 gene promoter activities were evaluated by chromatin immunoprecipitation. RESULTS Cell viability assays revealed that estrogen receptor negative MDA-MB-231 cells were resistant, that estrogen receptor positive MCF-7 cells were sensitive and that MCF-7/HER2 cells were relatively resistant to tamoxifen, while leptin co-administration 'rescued' MCF-7 and, especially, MCF-7/HER2 cells from the anti-proliferative effect of tamoxifen. The cell lines also exhibited a different phosphorylation status of STAT3, a transcription factor that is activated by the obesity related leptin receptor b (Ob-Rb). Most importantly, chromatin immunoprecipitation assays revealed differential STAT3 binding to the anti-apoptotic BCL2 and pro-apoptotic WWOX gene promoters in MCF-7 and MCF-7/HER2 cells, leading to concomitant modifications of its mRNA/protein expression levels, thus providing a selective advantage to HER2 over-expressing MCF-7/HER2 cells after treatment with tamoxifen and tamoxifen plus leptin. CONCLUSIONS Our study provides novel evidence indicating that synergy between the leptin/Ob-Rb/STAT3 signalling pathway and the HER2 receptor protects tamoxifen-treated HER2 over-expressing cells from the inhibitory effect of tamoxifen through differential regulation of apoptosis-related genes.
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Affiliation(s)
- Vassilis Papanikolaou
- Department of Biomedical Research and Technology, Institute for Research and Technology-Thessaly (I.RE.TE.TH), Centre for Research and Technology-Hellas (CE.R.T.H.), Larissa, 41222, Greece
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Evangelou E, Kerkhof HJ, Styrkarsdottir U, Ntzani EE, Bos SD, Esko T, Evans DS, Metrustry S, Panoutsopoulou K, Ramos YFM, Thorleifsson G, Tsilidis KK, Arden N, Aslam N, Bellamy N, Birrell F, Blanco FJ, Carr A, Chapman K, Day-Williams AG, Deloukas P, Doherty M, Engström G, Helgadottir HT, Hofman A, Ingvarsson T, Jonsson H, Keis A, Keurentjes JC, Kloppenburg M, Lind PA, McCaskie A, Martin NG, Milani L, Montgomery GW, Nelissen RGHH, Nevitt MC, Nilsson PM, Ollier WER, Parimi N, Rai A, Ralston SH, Reed MR, Riancho JA, Rivadeneira F, Rodriguez-Fontenla C, Southam L, Thorsteinsdottir U, Tsezou A, Wallis GA, Wilkinson JM, Gonzalez A, Lane NE, Lohmander LS, Loughlin J, Metspalu A, Uitterlinden AG, Jonsdottir I, Stefansson K, Slagboom PE, Zeggini E, Meulenbelt I, Ioannidis JPA, Spector TD, van Meurs JBJ, Valdes AM. A meta-analysis of genome-wide association studies identifies novel variants associated with osteoarthritis of the hip. Ann Rheum Dis 2014; 73:2130-6. [PMID: 23989986 PMCID: PMC4251181 DOI: 10.1136/annrheumdis-2012-203114] [Citation(s) in RCA: 94] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2012] [Accepted: 07/26/2013] [Indexed: 12/15/2022]
Abstract
OBJECTIVES Osteoarthritis (OA) is the most common form of arthritis with a clear genetic component. To identify novel loci associated with hip OA we performed a meta-analysis of genome-wide association studies (GWAS) on European subjects. METHODS We performed a two-stage meta-analysis on more than 78,000 participants. In stage 1, we synthesised data from eight GWAS whereas data from 10 centres were used for 'in silico' or 'de novo' replication. Besides the main analysis, a stratified by sex analysis was performed to detect possible sex-specific signals. Meta-analysis was performed using inverse-variance fixed effects models. A random effects approach was also used. RESULTS We accumulated 11,277 cases of radiographic and symptomatic hip OA. We prioritised eight single nucleotide polymorphism (SNPs) for follow-up in the discovery stage (4349 OA cases); five from the combined analysis, two male specific and one female specific. One locus, at 20q13, represented by rs6094710 (minor allele frequency (MAF) 4%) near the NCOA3 (nuclear receptor coactivator 3) gene, reached genome-wide significance level with p=7.9×10(-9) and OR=1.28 (95% CI 1.18 to 1.39) in the combined analysis of discovery (p=5.6×10(-8)) and follow-up studies (p=7.3×10(-4)). We showed that this gene is expressed in articular cartilage and its expression was significantly reduced in OA-affected cartilage. Moreover, two loci remained suggestive associated; rs5009270 at 7q31 (MAF 30%, p=9.9×10(-7), OR=1.10) and rs3757837 at 7p13 (MAF 6%, p=2.2×10(-6), OR=1.27 in male specific analysis). CONCLUSIONS Novel genetic loci for hip OA were found in this meta-analysis of GWAS.
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Affiliation(s)
- Evangelos Evangelou
- Department of Hygiene and Epidemiology, University of Ioannina Medical School, Ioannina, Greece
- Department of Twin Research & Genetic Epidemiology, King's College London, London, UK
| | - Hanneke J Kerkhof
- Department of Internal Medicine, Erasmus Medical Center, Rotterdam, The Netherlands
| | | | - Evangelia E Ntzani
- Department of Hygiene and Epidemiology, University of Ioannina Medical School, Ioannina, Greece
| | - Steffan D Bos
- Department of Molecular Epidemiology, Leiden University Medical Center, Leiden, The Netherlands
- Netherlands Consortium for Healthy Ageing, The Netherlands
| | - Tonu Esko
- Estonian Genome Center, University of Tartu, Tartu, Estonia
- Institute of Molecular and Cell Biology, University of Tartu, Tartu, Estonia
| | - Daniel S Evans
- California Pacific Medical Center Research Institute, San Francisco, USA
| | - Sarah Metrustry
- Department of Twin Research & Genetic Epidemiology, King's College London, London, UK
| | | | - Yolande F M Ramos
- Department of Molecular Epidemiology, Leiden University Medical Center, Leiden, The Netherlands
| | | | - Konstantinos K Tsilidis
- Department of Hygiene and Epidemiology, University of Ioannina Medical School, Ioannina, Greece
| | | | - Nigel Arden
- NIHR Biomedical Research Unit and ARUK Centre of excellence for Sport, Exercise and Osteoarthritis, University of Oxford, Oxford, UK
- MRC Epidemiology Resource Centre, University of Southampton, Southampton, UK
| | - Nadim Aslam
- Worcestershire Royal Hospital, Worcestershire Acute Hospitals NHS Trust, Worcester, UK
| | - Nicholas Bellamy
- Centre of National Research on Disability and Rehabilitation Medicine, The University of Queensland, Brisbane, Australia
| | - Fraser Birrell
- Musculoskeletal Research Group, Institute of Cellular Medicine, Newcastle University, Newcastle upon Tyne, UK
- Wansbeck General Hospital, Northumbria Healthcare NHS Foundation Trust, Ashington, UK
| | - Francisco J Blanco
- Rheumatology Division, Instituto de Investigación Biomédica-Hospital Universitario A Coruña, A Corunna, Spain
| | - Andrew Carr
- NIHR Biomedical Research Unit and ARUK Centre of excellence for Sport, Exercise and Osteoarthritis, University of Oxford, Oxford, UK
| | - Kay Chapman
- NIHR Biomedical Research Unit and ARUK Centre of excellence for Sport, Exercise and Osteoarthritis, University of Oxford, Oxford, UK
| | | | - Panos Deloukas
- Department of Human Genetics, Wellcome Trust Sanger Institute, Hinxton, UK
| | - Michael Doherty
- Department of Academic Rheumatology, University of Nottingham, Nottingham, UK
| | - Gunnar Engström
- Department of Clinical Sciences Malmo, Lund University, Malmo, Sweden
| | | | - Albert Hofman
- Department of Epidemiology, Erasmus Medical Center, Rotterdam, The Netherlands
| | - Thorvaldur Ingvarsson
- Department of Orthopedic Surgery, Akureyri Hospital, Akureyri, Iceland
- School of Health Sciences, University of Akureyri, Akureyri, Iceland
| | - Helgi Jonsson
- Department of Medicine, The National University Hospital of Iceland, Reykjavik, Iceland
- Faculty of Medicine, University of Iceland, Reykjavik, Iceland
| | - Aime Keis
- Department of Public Health, University of Tartu, Tartu, Estonia
- Orthopedic Surgeons, Elva Hospital, Elva, Estonia
| | | | - Margreet Kloppenburg
- Department of Rheumatology, Leiden University Medical Center, Leiden, The Netherlands
| | - Penelope A Lind
- Department of Quantitative Genetics, QIMR Berghofer Medical Research Institute, Brisbane, Australia
| | - Andrew McCaskie
- Musculoskeletal Research Group, Institute of Cellular Medicine, Newcastle University, Newcastle upon Tyne, UK
| | - Nicholas G Martin
- Department of Genetic Epidemiology, QIMR Berghofer Medical Research Institute, Brisbane, Australia
| | - Lili Milani
- Estonian Genome Center, University of Tartu, Tartu, Estonia
| | - Grant W Montgomery
- Department of Molecular Epidemiology, QIMR Berghofer Medical Research Institute, Brisbane, Australia
| | - Rob G H H Nelissen
- Department of Orthopedics, Leiden University Medical Center, Leiden, The Netherlands
| | - Michael C Nevitt
- Department of Epidemiology and Biostatistics, University of California, San Francisco, San Francisco, California, USA
| | - Peter M Nilsson
- Department of Clinical Sciences Malmo, Lund University, Malmo, Sweden
| | - William ER Ollier
- Centre for Integrated Genomic Medical Research, University of Manchester, Manchester, UK
| | - Neeta Parimi
- California Pacific Medical Center Research Institute, San Francisco, USA
| | - Ashok Rai
- Worcestershire Acute Hospitals NHS Trust, Worcester, UK
| | - Stuart H Ralston
- Institute of Genetics and Molecular Medicine, University of Edinburgh, Edinburgh, UK
| | - Mike R Reed
- Wansbeck General Hospital, Northumbria Healthcare NHS Foundation Trust, Ashington, UK
| | - Jose A Riancho
- Department of Internal Medicine, Hospital U.M. Valdecilla-IFIMAV, University of Cantabria, Santander, Spain
| | - Fernando Rivadeneira
- Department of Internal Medicine, Erasmus Medical Center, Rotterdam, The Netherlands
- Department of Epidemiology, Erasmus Medical Center, Rotterdam, The Netherlands
| | - Cristina Rodriguez-Fontenla
- Laboratorio Investigacion 10 and Rheumatology Unit, Instituto de Investigacion Sanitaria—Hospital Clinico Universitario de Santiago, Santiago de Compostela, Spain
| | - Lorraine Southam
- Department of Human Genetics, Wellcome Trust Sanger Institute, Hinxton, UK
| | - Unnur Thorsteinsdottir
- Department of Population Genetics, deCODE Genetics, Reykjavik, Iceland
- Department of Medicine, The National University Hospital of Iceland, Reykjavik, Iceland
| | - Aspasia Tsezou
- Department of Biology, University of Thessaly, Medical School, Larissa, Greece
| | - Gillian A Wallis
- Wellcome Trust Centre for Cell-Matrix Research, University of Manchester, Manchester, UK
| | - J Mark Wilkinson
- Department of Human Metabolism, University of Sheffield, Sheffield, UK
| | - Antonio Gonzalez
- Laboratorio Investigacion 10 and Rheumatology Unit, Instituto de Investigacion Sanitaria—Hospital Clinico Universitario de Santiago, Santiago de Compostela, Spain
| | - Nancy E Lane
- Department of Medicine, University of California at Davis, Sacramento, USA
| | - L Stefan Lohmander
- Research Unit for Musculoskeletal Function and Physiotherapy, and Department of Orthopedics and Traumatology, University of Southern Denmark, Odense, Denmark
- Department of Clinical Sciences Lund, Lund University, Lund, Sweden
| | - John Loughlin
- Musculoskeletal Research Group, Institute of Cellular Medicine, Newcastle University, Newcastle upon Tyne, UK
| | - Andres Metspalu
- Estonian Genome Center, University of Tartu, Tartu, Estonia
- Institute of Molecular and Cell Biology, University of Tartu, Tartu, Estonia
| | - Andre G Uitterlinden
- Department of Internal Medicine, Erasmus Medical Center, Rotterdam, The Netherlands
- Department of Epidemiology, Erasmus Medical Center, Rotterdam, The Netherlands
| | - Ingileif Jonsdottir
- Department of Population Genetics, deCODE Genetics, Reykjavik, Iceland
- Faculty of Medicine, University of Iceland, Reykjavik, Iceland
| | - Kari Stefansson
- Department of Population Genetics, deCODE Genetics, Reykjavik, Iceland
- Faculty of Medicine, University of Iceland, Reykjavik, Iceland
| | - P Eline Slagboom
- Department of Molecular Epidemiology, Leiden University Medical Center, Leiden, The Netherlands
- Netherlands Consortium for Healthy Ageing, The Netherlands
| | - Eleftheria Zeggini
- Department of Human Genetics, Wellcome Trust Sanger Institute, Hinxton, UK
| | - Ingrid Meulenbelt
- Department of Molecular Epidemiology, Leiden University Medical Center, Leiden, The Netherlands
- Netherlands Consortium for Healthy Ageing, The Netherlands
| | - John PA Ioannidis
- Department of Hygiene and Epidemiology, University of Ioannina Medical School, Ioannina, Greece
- Stanford Prevention Research Center, Stanford University School of Medicine, Stanford, USA
| | - Tim D Spector
- Department of Twin Research & Genetic Epidemiology, King's College London, London, UK
| | - Joyce B J van Meurs
- Department of Internal Medicine, Erasmus Medical Center, Rotterdam, The Netherlands
| | - Ana M Valdes
- Department of Twin Research & Genetic Epidemiology, King's College London, London, UK
- Department of Academic Rheumatology, University of Nottingham, Nottingham, UK
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Abstract
Recent developments in genetics/genomics of osteoarthritis (OA) are discussed to improve our understanding of OA pathophysiology. The discovery of a novel variant near the NCOA3 (nuclear receptor coactivator 3) gene associated with hip OA and the regulation of GDF5 gene by four transcription factors via the OA susceptibility locus rs143383 are among important findings in OA genetics. Several microarray-based gene expression studies were published for different tissues of the joint. In OA synovium elevation of collagens and cross-linking enzymes (COL1A1, COL5A1, PLOD2, LOX and TIMP1) responsive to TGF-β was found as well as differential expression pattern between different areas of the osteoarthritic synovial membrane. In OA peripheral blood the role of apoptotic genes was highlighted, while whole genome expression profiling in OA subchondral bone and cartilage revealed common genes in cartilage and bone to be involved in OA development. In epigenetics, several microRNAs (miRNAs) were found to regulate genes' expression in chondrocytes, among which miR-125, miR-127b miR-21, miR-148a and their use as potential drug targets was highlighted. Future studies must focus on the integration of genetics, genomics and epigenetics for the identification of signaling pathways and regulatory networks responsible for OA development.
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Affiliation(s)
- A Tsezou
- University of Thessaly, Faculty of Medicine, Dept. Biology, 41110 Larissa, Greece
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Koureas M, Tsezou A, Tsakalof A, Orfanidou T, Hadjichristodoulou C. Increased levels of oxidative DNA damage in pesticide sprayers in Thessaly Region (Greece). Implications of pesticide exposure. Sci Total Environ 2014; 496:358-364. [PMID: 25089694 DOI: 10.1016/j.scitotenv.2014.07.062] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/06/2014] [Revised: 07/17/2014] [Accepted: 07/17/2014] [Indexed: 06/03/2023]
Abstract
The widespread use of pesticides substances nowadays largely guarantees the protection of crops and people from undesired pests. However, exposure to pesticides was related to a variety of human health effects. The present study was conducted in the region of Thessaly which is characterized by intensive agricultural activities and wide use of pesticides. The study aimed at estimating the oxidative damage to DNA in different subpopulations in Thessaly region (Greece) and investigating its correlation with exposure to pesticides and other potential risk factors. In total, the study involved 80 pesticide sprayers, 85 rural residents and 121 individuals, inhabitants of the city of Larissa. Demographic characteristics, habits, medical history and exposure history of the participants to pesticides were recorded by personal interviews. Blood and urine samples were collected from all participants. For the measurement of exposure to organophosphorus insecticides, dialkylphosphate (DAP) metabolites were quantified in urine, by gas chromatography-mass spectrometry. Genomic DNA was extracted from peripheral blood samples and the oxidation by-product 8-hydroxydeoxyguanosine (8-OHdG) was determined by Enzyme Immuno-Assay. Urinary metabolite concentrations were not associated with 8-OHdG levels but it was found that pesticide sprayers had significantly higher levels of 8-OHdG (p=0.007) in comparison to the control group. Last season's exposure to insecticides and fungicides, expressed as total area treated multiplied by the number of applications, showed a statistically significant association with the risk of having high 8-OHdG levels [RR: 2.19 (95%CI:1.09-4.38) and RR: 2.32 (95% CI:1.16-4.64) respectively]. Additionally, from the subgroups of pesticides examined, seasonal exposure to neonicotinoid insecticides [RR: 2.22 (95% CI:1.07-4.63)] and glufosinate ammonium [RR: 3.26 (95% CI:1.38-7.69)] was found to have the greater impact on 8-OHdG levels. This study produced findings that support the hypothesis that pesticide exposure is involved in the induction of oxidative damage to DNA and identified chemical groups of pesticides which should be given greater attention in future investigations.
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Affiliation(s)
- Michalis Koureas
- Department of Hygiene and Epidemiology, Faculty of Medicine, University of Thessaly, 22 Papakyriazi Street, Larissa 41222, Greece
| | - Aspasia Tsezou
- Laboratory of Cytogenetics and Molecular Genetics, University of Thessaly, School of Medicine, Larissa, Greece
| | - Andreas Tsakalof
- Department of Hygiene and Epidemiology, Faculty of Medicine, University of Thessaly, 22 Papakyriazi Street, Larissa 41222, Greece; Department of Chemistry, Faculty of Medicine, University of Thessaly, Larissa, Greece
| | - Timoklia Orfanidou
- Department of Biomedical Research and Technology, Institute for Research and Technology-Thessaly (I.RE.TE.TH), 51 Papanastasiou Street, Larissa 41222, Greece
| | - Christos Hadjichristodoulou
- Department of Hygiene and Epidemiology, Faculty of Medicine, University of Thessaly, 22 Papakyriazi Street, Larissa 41222, Greece.
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Zacharaki F, Hadjigeorgiou GM, Koliakos GG, Morrison MA, Tsezou A, Chatzoulis DZ, Almpanidou P, Topouridou K, Karabatsas CH, Pefkianaki M, DeAngelis MM, Tsironi EE. Plasma homocysteine and genetic variants of homocysteine metabolism enzymes in patients from central Greece with primary open-angle glaucoma and pseudoexfoliation glaucoma. Clin Ophthalmol 2014; 8:1819-25. [PMID: 25246760 PMCID: PMC4166342 DOI: 10.2147/opth.s64904] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
BACKGROUND The purpose of this study was to investigate plasma homocysteine levels and polymorphisms in genes encoding enzymes in the metabolic pathway of homocysteine in association with primary open-angle glaucoma (POAG) and pseudoexfoliation glaucoma (PXFG). METHODS A total of 156 glaucoma patients (76 with POAG and 80 with PXFG) and 135 controls matched for age and sex were enrolled in this study. Plasma homocysteine levels were measured using a commercially available enzyme-linked immunosorbent assay kit. DNA was extracted from peripheral blood leukocytes and real-time polymerase chain reaction was performed for genotyping of the samples. Patients were genotyped using predesigned TaqMan(®) single nucleotide polymorphism genotyping assays for two exon variations (rs1801131, rs1801133) in the 5,10-methylenetetrahydrofolate reductase (MTHFR) gene and one intron variation (rs8006686) in the methylenetetrahydrofolate dehydrogenase (MTHFD1) gene. RESULTS Homocysteine levels were slightly higher in the patient group (POAG and PXFG) compared with controls, but the difference did not reach statistical significance. The minor alleles of the MTHFR single nucleotide polymorphisms showed a protective effect for POAG and showed an increased risk for PXFG, but none of these associations reached statistical significance (P>0.05). The minor allele of MTHFD1 rs8006686 showed a trend for increased risk of both POAG and PXFG (P>0.05). No statistically significant interaction was seen between the genetic variants and homocysteine levels (P>0.05). CONCLUSION Our results show that neither the examined single nucleotide polymorphisms from genes involved in the pathway of homocysteine metabolism nor the measured homocysteine levels were associated with POAG or PXFG in our study cohort.
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Affiliation(s)
- Fani Zacharaki
- Department of Ophthalmology, Faculty of Medicine, University of Thessaly, Larissa, Greece
| | | | - Georgios G Koliakos
- Department of Biochemistry, Medical School, Aristotles University of Thessaloniki, Thessaloniki, Greece
| | - Margaux A Morrison
- Department of Ophthalmology and Visual Sciences, John A Moran Eye Center, University of Utah, Salt Lake City, UT, USA
| | - Aspasia Tsezou
- Department of Biology, Faculty of Medicine, University of Thessaly, Larissa, Greece
| | - Dimitrios Z Chatzoulis
- Department of Ophthalmology, Faculty of Medicine, University of Thessaly, Larissa, Greece
| | - Pavlina Almpanidou
- Department of Ophthalmology, Faculty of Medicine, University of Thessaly, Larissa, Greece
| | - Konstantina Topouridou
- Department of Biochemistry, Medical School, Aristotles University of Thessaloniki, Thessaloniki, Greece
| | | | - Maria Pefkianaki
- Department of Ophthalmology, Faculty of Medicine, University of Thessaly, Larissa, Greece
| | - Margaret M DeAngelis
- Department of Ophthalmology and Visual Sciences, John A Moran Eye Center, University of Utah, Salt Lake City, UT, USA
| | - Evangelia E Tsironi
- Department of Ophthalmology, Faculty of Medicine, University of Thessaly, Larissa, Greece
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Rodriguez-Fontenla C, Calaza M, Evangelou E, Valdes AM, Arden N, Blanco FJ, Carr A, Chapman K, Deloukas P, Doherty M, Esko T, Garcés Aletá CM, Gomez-Reino Carnota JJ, Helgadottir H, Hofman A, Jonsdottir I, Kerkhof HJM, Kloppenburg M, McCaskie A, Ntzani EE, Ollier WER, Oreiro N, Panoutsopoulou K, Ralston SH, Ramos YF, Riancho JA, Rivadeneira F, Slagboom PE, Styrkarsdottir U, Thorsteinsdottir U, Thorleifsson G, Tsezou A, Uitterlinden AG, Wallis GA, Wilkinson JM, Zhai G, Zhu Y, Felson DT, Ioannidis JPA, Loughlin J, Metspalu A, Meulenbelt I, Stefansson K, van Meurs JB, Zeggini E, Spector TD, Gonzalez A. Assessment of osteoarthritis candidate genes in a meta-analysis of nine genome-wide association studies. Arthritis Rheumatol 2014; 66:940-9. [PMID: 24757145 PMCID: PMC4660891 DOI: 10.1002/art.38300] [Citation(s) in RCA: 86] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2013] [Accepted: 11/26/2013] [Indexed: 01/31/2023]
Abstract
Objective To assess candidate genes for association with osteoarthritis (OA) and identify promising genetic factors and, secondarily, to assess the candidate gene approach in OA. Methods A total of 199 candidate genes for association with OA were identified using Human Genome Epidemiology (HuGE) Navigator. All of their single-nucleotide polymorphisms (SNPs) with an allele frequency of >5% were assessed by fixed-effects meta-analysis of 9 genome-wide association studies (GWAS) that included 5,636 patients with knee OA and 16,972 control subjects and 4,349 patients with hip OA and 17,836 control subjects of European ancestry. An additional 5,921 individuals were genotyped for significantly associated SNPs in the meta-analysis. After correction for the number of independent tests, P values less than 1.58 × 10−5 were considered significant. Results SNPs at only 2 of the 199 candidate genes (COL11A1 and VEGF) were associated with OA in the meta-analysis. Two SNPs in COL11A1 showed association with hip OA in the combined analysis: rs4907986 (P = 1.29 × 10−5, odds ratio [OR] 1.12, 95% confidence interval [95% CI] 1.06−1.17) and rs1241164 (P = 1.47 × 10−5, OR 0.82, 95% CI 0.74−0.89). The sex-stratified analysis also showed association of COL11A1 SNP rs4908291 in women (P = 1.29 × 10−5, OR 0.87, 95% CI 0.82−0.92); this SNP showed linkage disequilibrium with rs4907986. A single SNP of VEGF, rs833058, showed association with hip OA in men (P = 1.35 × 10−5, OR 0.85, 95% CI 0.79−0.91). After additional samples were genotyped, association at one of the COL11A1 signals was reinforced, whereas association at VEGF was slightly weakened. Conclusion Two candidate genes, COL11A1 and VEGF, were significantly associated with OA in this focused meta-analysis. The remaining candidate genes were not associated.
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Oikonomou KA, Orfanidou TI, Vlychou MK, Kapsoritakis AN, Tsezou A, Malizos KN, Potamianos SP. Lower fibroblast growth factor 23 levels in young adults with Crohn disease as a possible secondary compensatory effect on the disturbance of bone and mineral metabolism. J Clin Densitom 2014; 17:177-84. [PMID: 23623649 DOI: 10.1016/j.jocd.2013.03.019] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/19/2013] [Accepted: 03/27/2013] [Indexed: 01/01/2023]
Abstract
Fibroblast growth factor 23 (FGF-23) is a bone-derived circulating phosphaturic factor that decreases serum concentration of phosphate and vitamin D, suggested to actively participate in a complex renal-gastrointestinal-skeletal axis. Serum FGF-23 concentrations, as well as various other laboratory parameters involved in bone homeostasis, were measured and analyzed with regard to various diseases and patients' characteristics in 44 patients with Crohn disease (CD) and 20 healthy controls (HCs) included in this cross-sectional study. Serum FGF-23 levels were significantly lower in patients with CD (900.42 ± 815.85pg/mL) compared with HC (1410.94 ± 1000.53pg/mL), p = 0.037. Further analyses suggested FGF-23 as a factor independent from various parameters including age (r = -0.218), body mass index (r = -0.115), 25-hydroxy vitamin D (r = 0.126), parathyroid hormone (r = 0.084), and bone mineral density (BMD) of hip and lumbar (r = 0.205 and r = 0.149, respectively). This observation remained even after multivariate analyses, exhibiting that BMD was not affected by FGF-23, although parameters such as age (p = 0.026), cumulative prednisolone dose (p < 0.0001), and smoking status (p = 0.024) were strong determinants of BMD regarding hip. Lower FGF-23 levels in patients with bowel inflammation are accompanied but not directly correlated with lower vitamin D levels, showing no impact on BMD determination of young adults with CD. The downregulation of serum FGF-23 levels in CD appears as a secondary compensatory effect on the bone and mineral metabolism induced by chronic intestinal inflammation.
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Affiliation(s)
- Konstantinos A Oikonomou
- Department of Gastroenterology, Faculty of Medicine, School of Health Sciences, University of Thessaly, Larissa, Greece; Institute for Biomedical Research & Technology (BIOMED), Centre for Research and Technology-Thessaly (CERETETH), Larissa, Greece
| | - Timoklia I Orfanidou
- Institute for Biomedical Research & Technology (BIOMED), Centre for Research and Technology-Thessaly (CERETETH), Larissa, Greece
| | - Marianna K Vlychou
- Department of Radiology, Faculty of Medicine, School of Health Sciences, University of Thessaly, Larissa, Greece.
| | - Andreas N Kapsoritakis
- Department of Gastroenterology, Faculty of Medicine, School of Health Sciences, University of Thessaly, Larissa, Greece
| | - Aspasia Tsezou
- Institute for Biomedical Research & Technology (BIOMED), Centre for Research and Technology-Thessaly (CERETETH), Larissa, Greece; Department of Biology, Faculty of Medicine, School of Health Sciences, University of Thessaly, Larissa, Greece
| | - Konstantinos N Malizos
- Institute for Biomedical Research & Technology (BIOMED), Centre for Research and Technology-Thessaly (CERETETH), Larissa, Greece; Department of Orthopaedics, Faculty of Medicine, School of Health Sciences, University of Thessaly, Larissa, Greece
| | - Spyros P Potamianos
- Department of Gastroenterology, Faculty of Medicine, School of Health Sciences, University of Thessaly, Larissa, Greece
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Karatzas A, Tzortzis V, Giannatou E, Gravas S, Zachos I, Oeconomou A, Melekos M, Tsezou A. Lack of association between the UDP-glucuronosyltransferase 1A1 (UGT1A1) gene polymorphism and the risk of benign prostatic hyperplasia in Caucasian men. Mol Biol Rep 2013; 40:6665-9. [PMID: 24057187 DOI: 10.1007/s11033-013-2781-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2012] [Accepted: 09/14/2013] [Indexed: 10/26/2022]
Abstract
Glucuronidation, mediated by the UDP-glucuronosyltransferase 1A1 (UGT1A1) enzyme, is an important metabolic process during which steroids are converted to more easily excreted compounds in steroid target tissues, such as the prostate. The aim of our study was to investigate the possible correlation between UGT1A1 promoter gene polymorphism and benign prostatic hyperplasia. 421 blood samples were obtained from 138 consecutive patients diagnosed with benign prostatic hypeplasia (BPH group) and 283 healthy volunteers (control group). A(TA)6TAA promoter polymorphism of UGT1A1 gene was studied using the Fragment Analysis Software of an automated DNA sequencer and three genotypes (homozygous 7/7, heterozygous 6/7 and normal homozygous 6/6) were identified. No significant differences were observed between the BPH group and controls regarding the genotyping distribution of the three UGT1A1 promoter genotypes (P = 0.39). Also, no association was found between overall disease risk and the presence of the polymorphic homozygous genotype (TA(7)/TA)7) vs. TA(6)/TA(7) + TA(6)/TA(6)) (P = 0.31). Our data suggest that the TA repeat polymorphism of UGT1A1 is not associated with increased BPH risk susceptibility in Caucasian men.
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Affiliation(s)
- Anastasios Karatzas
- Department of Urology, University of Thessaly School of Medicine, Mezourlo, 41110, Larissa, Greece,
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Karathanos C, Exarchou M, Tsezou A, Kyriakou D, Wittens C, Giannoukas A. Factors associated with the development of superficial vein thrombosis in patients with varicose veins. Thromb Res 2013; 132:47-50. [PMID: 23768449 DOI: 10.1016/j.thromres.2013.05.017] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2013] [Revised: 04/29/2013] [Accepted: 05/21/2013] [Indexed: 11/25/2022]
Abstract
INTRODUCTION Superficial vein thrombosis (SVT) is a common and controversial clinical entity. Recent studies have demonstrated that SVT should be seen as a venous thromboembolism (VTE). The objective of this study was to investigate the prevalence of thrombophilia defects and to estimate the role of age, sex and body mass index (BMI) in patients with varicose veins (VVs) and SVT. MATERIALS AND METHODS A total of 230 patients with VVs, 128 with, and 102 without SVT underwent thrombophilia testing included factor V Leiden, prothrombin G20210A, methylenetetrahydrofolate reductase and plasminogen activator inhibitor- 1 mutations, protein C, protein S (PS), anti-thrombin III and plasminogen deficiencies and levels of A2 antiplasmin, activate protein C resistance and lupus anticoagulant. According to Clinical-Etiology-Anatomy-Pathophysiology (CEAP) classification patients were categorized in two subgroups: moderate disease (C2,3) and severe disease (C4,5,6). Age and body mass index were also assessed. RESULTS The prevalence of thrombophilia defects was significantly higher in patients with moderate disease and SVT (p=0.002). In the C2,3 group, SVT was associated with PS deficiency (p=0.018), obesity (p<0.001), male gender (p=0.047) and age (p<0.001). There were no significant differences in patients with severe disease. CONCLUSIONS Age, male sex, obesity and PS deficiency are factors associated with SVT development among patients with VVs having moderate disease (C2,3).
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Affiliation(s)
- Christos Karathanos
- Department of Vascular Surgery, Faculty of Medicine, School of Health Sciences, University of Thessalia, Larissa, Greece.
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Rodriguez-Fontenla C, Carr A, Gomez-Reino J, Tsezou A, Loughlin J, Gonzalez A. SAT0009 Association of a BMP5 microsatellite with knee osteoarthritis. Ann Rheum Dis 2013. [DOI: 10.1136/annrheumdis-2012-eular.2957] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Gkretsi V, Papanikolaou V, Zacharia LC, Athanassiou E, Wu C, Tsezou A. Mitogen-inducible Gene-2 (MIG2) and migfilin expression is reduced in samples of human breast cancer. Anticancer Res 2013; 33:1977-1981. [PMID: 23645746] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
BACKGROUND Cell adhesion proteins that connect each cell to neighboring cells and the extracellular matrix play a fundamental role in metastasis. Mitogen-inducible gene-2 (MIG2), is a cell-matrix adhesion protein, which through migfilin, interacts with filamin-A, being linked to actin cytoskeleton. AIM Recent studies have implicated both MIG2 and migfilin in cancer, but little is known regarding their expression in breast cancer. In this study, we investigated this topic. MATERIALS AND METHODS mRNA and protein expression was examined in 30 breast cancer samples and compared to that of normal adjacent tissue using real time-polymerase chain reaction (PCR) and western blotting. RESULTS Our results showed that expression of MIG2 and migfilin was significantly reduced in the majority of the breast cancer tissues compared to normal tissues regardless of metastatic status and disease stage. CONCLUSION Both MIG2 and migfilin are down-regulated in breast cancer.
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MESH Headings
- Biomarkers, Tumor/genetics
- Biomarkers, Tumor/metabolism
- Blotting, Western
- Breast/metabolism
- Breast/pathology
- Breast Neoplasms/genetics
- Breast Neoplasms/metabolism
- Breast Neoplasms/pathology
- Carcinoma, Ductal, Breast/genetics
- Carcinoma, Ductal, Breast/metabolism
- Carcinoma, Ductal, Breast/secondary
- Carcinoma, Intraductal, Noninfiltrating/genetics
- Carcinoma, Intraductal, Noninfiltrating/metabolism
- Carcinoma, Intraductal, Noninfiltrating/secondary
- Carcinoma, Lobular/genetics
- Carcinoma, Lobular/metabolism
- Carcinoma, Lobular/secondary
- Cell Adhesion Molecules/genetics
- Cell Adhesion Molecules/metabolism
- Cytoskeletal Proteins/genetics
- Cytoskeletal Proteins/metabolism
- Female
- Humans
- Membrane Proteins/genetics
- Membrane Proteins/metabolism
- Neoplasm Invasiveness
- Neoplasm Proteins/genetics
- Neoplasm Proteins/metabolism
- Prognosis
- RNA, Messenger/genetics
- Real-Time Polymerase Chain Reaction
- Reverse Transcriptase Polymerase Chain Reaction
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Affiliation(s)
- Vasiliki Gkretsi
- Department of Biomedical Research and Technology, Institute for Research and Technology-Thessaly (I.RE.TE.TH), 51 Papanastasiou street, Larissa 41222, Greece.
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Gkretsi V, Papanikolaou V, Dubos S, Papathanasiou I, Giotopoulou N, Valiakou V, Wu C, Malizos KN, Tsezou A. Migfilin's elimination from osteoarthritic chondrocytes further promotes the osteoarthritic phenotype via β-catenin upregulation. Biochem Biophys Res Commun 2012; 430:494-9. [PMID: 23237804 DOI: 10.1016/j.bbrc.2012.12.008] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2012] [Accepted: 12/04/2012] [Indexed: 01/18/2023]
Abstract
Osteoarthritis (OA) is a debilitating disease of the joints characterized by cartilage degradation but to date there is no available pharmacological treatment to inhibit disease progression neither is there any available biomarker to predict its development. In the present study, we examined the expression level and possible involvement of novel cell-ECM adhesion-related molecules such as Iintegrin Linked Kinase (ILK), PINCH, parvin, Mig-2 and Migfilin in OA pathogenesis using primary human articular chondrocytes from healthy individuals and OA patients. Our findings show that only ILK and Migfilin were upregulated in OA compared to the normal chondrocytes. Interestingly, Migfilin silencing in OA chondrocytes rather exacerbated than ameliorated the osteoarthritic phenotype, as it resulted in even higher levels of catabolic and hypertrophic markers while at the same time induced reduction in ECM molecules such as aggrecan. Furthermore, we also provide a link between Migfilin and β-catenin activation in OA chondrocytes, showing Migfilin to be inversely correlated with β-catenin. Thus, the present study emphasizes for the first time to our knowledge the role of Migfilin in OA and highlights the importance of cell-ECM adhesion proteins in OA pathogenesis.
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Affiliation(s)
- Vasiliki Gkretsi
- Center for Research and Technology-Thessaly (CE.RE.TE.TH), Department of Biomedical Research and Technology, Larissa 41222, Greece.
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Rodriguez-Fontenla C, Carr A, Gomez-Reino JJ, Tsezou A, Loughlin J, Gonzalez A. Association of a BMP5 microsatellite with knee osteoarthritis: case-control study. Arthritis Res Ther 2012. [PMID: 23186552 PMCID: PMC3674626 DOI: 10.1186/ar4102] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Introduction We aimed to explore the involvement of a multiallelic functional polymorphism in knee osteoarthritis (OA) susceptibility as a prototype of possible genetic factors escaping GWAS detection. Methods OA patients and controls from three European populations (Greece, Spain and the UK) adding up to 1003 patients (716 women, 287 men) that had undergone total knee joint replacement (TKR) due to severe primary OA and 1543 controls (758 women, 785 men) lacking clinical signs or symptoms of OA were genotyped for the D6S1276 microsatellite in intron 1 of BMP5. Genotype and mutiallelic trend tests were used to compare cases and controls. Results Significant association was found between the microsatellite and knee OA in women (P from 3.1 x10-4 to 4.1 x10-4 depending on the test), but not in men. Three of the alleles showed significant differences between patients and controls, one of them of increased risk and two of protection. The gender association and the allele direction of change were very concordant with those previously reported for hip OA. Conclusions We have found association of knee OA in women with the D6S1276 functional microsatellite that modifies in cis the expression of BMP5 making this a sounder OA genetic factor and extending its involvement to other joints. This result also shows the interest of analysing other multiallelic polymorphisms.
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Daponte A, Deligeoroglou E, Pournaras S, Tsezou A, Garas A, Anastasiadou F, Hadjichristodoulou C, Messinis IE. Angiopoietin-1 and angiopoietin-2 as serum biomarkers for ectopic pregnancy and missed abortion: a case-control study. Clin Chim Acta 2012; 415:145-51. [PMID: 23099117 DOI: 10.1016/j.cca.2012.10.031] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2012] [Revised: 10/06/2012] [Accepted: 10/15/2012] [Indexed: 01/19/2023]
Abstract
BACKGROUND A case-control study to evaluate whether a single serum measurement of angiopoietin-1 (ANG-1) and angiopoietin-2 (ANG-2) at 6-8 weeks gestation can differentiate failed pregnancies, whether ectopic pregnancies (EP) or missed abortions (MA), from healthy intrauterine pregnancies (IUP). INTERVENTION(S) Serum and tissue mRNA determination of ANG-1 and ANG-2 levels by ELISA and RTPCR, from 60 (30 EP and 30 MA) patients with failed early pregnancy and 33 IUPs. RESULTS ANG-1 and ANG-2 concentrations and their ratio are lower in EP (median, 689 and 302 pg/ml, respectively) and MA cases (median, 810 and 402 pg/ml, respectively) compared to IUP (median, 963 and 1477 pg/ml, respectively) (p<0.05, for all). Unlike ANG-2, serum ANG-1 discriminates an EP from a MA (p=0.011). Trophoblastic ANG-1 mRNA expression levels are lower in EP compared to MA and IUP (p<0.05), while ANG-2 mRNA is higher in EP and MA than in IUP (p<0.05). CONCLUSIONS A single measurement of serum ANG-1 and ANG-2 at 6-8 weeks of gestation designate the outcome of a pregnancy, as their levels are significantly decreased in failed than normal pregnancies. Serum ANG-1 showed potential to discriminate MA from EP.
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Affiliation(s)
- Alexandros Daponte
- Department of Obstetrics and Gynecology, University of Thessaly Medical School, Larissa, Greece.
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Nakajima M, Shi D, Dai J, Tsezou A, Zheng M, Norman PE, Chou CH, Lee MTM, Hwang JY, Kim DH, Takahashi A, Ikegawa S, Jiang Q. A large-scale replication study for the association of rs17039192 in HIF-2α with knee osteoarthritis. J Orthop Res 2012; 30:1244-8. [PMID: 22247019 DOI: 10.1002/jor.22063] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/21/2011] [Accepted: 12/19/2011] [Indexed: 02/04/2023]
Abstract
Osteoarthritis (OA) is a common disease with a genetic component for its etiology. Recently, a genetic association of a single nucleotide polymorphism (SNP), rs17039192 in HIF-2α with knee OA has been reported in a Japanese population; however, controversy exits for its replication and a role of HIF-2α in OA. This study aimed to evaluate the association of the SNP by a large-scale replication study. A total of 8,457 subjects (3,129 OA cases and 5,328 controls) from seven independent cohorts from six countries (Japan, China, Taiwan, Korea, Greece, and Australia) were recruited and genotyped. The association of rs17039192 with knee OA was evaluated by meta-analyses. The association of the HIF-2α SNP was not replicated in any of the populations. Contrary to the previous report, the odds ratios (ORs) of the risk allele frequency were all less than 1. A combined analysis for the seven populations also showed no replication of the association (OR = 0.91, 95% confidence interval = 0.81-1.03). Our large-scale meta-analysis showed that the association of rs17039192 in HIF-2α with knee OA is negative. The significance of HIF-2α in human OA (idiopathic OA as a common disease) should be further evaluated carefully.
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Affiliation(s)
- Masahiro Nakajima
- Laboratory for Bone and Joint Diseases, Center for Genomic Medicine, RIKEN, Tokyo, Japan
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Kostopoulou F, Gkretsi V, Malizos KN, Iliopoulos D, Oikonomou P, Poultsides L, Tsezou A. Central role of SREBP-2 in the pathogenesis of osteoarthritis. PLoS One 2012; 7:e35753. [PMID: 22662110 PMCID: PMC3360703 DOI: 10.1371/journal.pone.0035753] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2011] [Accepted: 03/25/2012] [Indexed: 01/01/2023] Open
Abstract
Background Recent studies have implied that osteoarthritis (OA) is a metabolic disease linked to deregulation of genes involved in lipid metabolism and cholesterol efflux. Sterol Regulatory Element Binding Proteins (SREBPs) are transcription factors regulating lipid metabolism with so far no association with OA. Our aim was to test the hypothesis that SREBP-2, a gene that plays a key role in cholesterol homeostasis, is crucially involved in OA pathogenesis and to identify possible mechanisms of action. Methodology/Principal Findings We performed a genetic association analysis using a cohort of 1,410 Greek OA patients and healthy controls and found significant association between single nucleotide polymorphism (SNP) 1784G>C in SREBP-2 gene and OA development. Moreover, the above SNP was functionally active, as normal chondrocytes’ transfection with SREBP-2-G/C plasmid resulted in interleukin-1β and metalloproteinase-13 (MMP-13) upregulation. We also evaluated SREBP-2, its target gene 3-hydroxy-3-methylglutaryl-coenzymeA reductase (HMGCR), phospho-phosphoinositide3-kinase (PI3K), phospho-Akt, integrin-alphaV (ITGAV) and transforming growth factor-β (TGF-β) mRNA and protein expression levels in osteoarthritic and normal chondrocytes and found that they were all significantly elevated in OA chondrocytes. To test whether TGF-β alone can induce SREBP-2, we treated normal chondrocytes with TGF-β and found significant upregulation of SREBP-2, HMGCR, phospho-PI3K and MMP-13. We also showed that TGF-β activated aggrecan (ACAN) in chondrocytes only through Smad3, which interacts with SREBP-2. Finally, we examined the effect of an integrin inhibitor, cyclo-RGDFV peptide, on osteoarthritic chondrocytes, and found that it resulted in significant upregulation of ACAN and downregulation of SREBP-2, HMGCR, phospho-PI3K and MMP-13 expression levels. Conclusions/Significance We demonstrated, for the first time, the association of SREBP-2 with OA pathogenesis and provided evidence on the molecular mechanism involved. We suggest that TGF-β induces SREBP-2 pathway activation through ITGAV and PI3K playing a key role in OA and that integrin blockage may be a potential molecular target for OA treatment.
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Affiliation(s)
- Fotini Kostopoulou
- Department of Cytogenetics and Molecular Genetics, University of Thessaly School of Medicine, Larissa, Greece
- Institute of Biomedical Research and Technology, Center for Research and Technology-Thessaly, Larissa, Greece
| | - Vasiliki Gkretsi
- Institute of Biomedical Research and Technology, Center for Research and Technology-Thessaly, Larissa, Greece
| | - Konstantinos N. Malizos
- Institute of Biomedical Research and Technology, Center for Research and Technology-Thessaly, Larissa, Greece
- Department of Orthopaedics, University of Thessaly School of Medicine, Larissa, Greece
| | - Dimitrios Iliopoulos
- Department of Cancer Immunology & AIDS, Dana-Farber Cancer Institute and Department of Pathology, Harvard Medical School, Boston, Massachusetts, United States of America
| | - Pagona Oikonomou
- Institute of Biomedical Research and Technology, Center for Research and Technology-Thessaly, Larissa, Greece
| | - Lazaros Poultsides
- Department of Orthopaedics, University of Thessaly School of Medicine, Larissa, Greece
| | - Aspasia Tsezou
- Department of Cytogenetics and Molecular Genetics, University of Thessaly School of Medicine, Larissa, Greece
- Institute of Biomedical Research and Technology, Center for Research and Technology-Thessaly, Larissa, Greece
- Department of Biology, University of Thessaly School of Medicine, Larissa, Greece
- * E-mail:
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Papathanasiou I, Malizos KN, Tsezou A. Bone morphogenetic protein-2-induced Wnt/β-catenin signaling pathway activation through enhanced low-density-lipoprotein receptor-related protein 5 catabolic activity contributes to hypertrophy in osteoarthritic chondrocytes. Arthritis Res Ther 2012; 14:R82. [PMID: 22513174 PMCID: PMC3446456 DOI: 10.1186/ar3805] [Citation(s) in RCA: 80] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2011] [Revised: 01/31/2012] [Accepted: 04/18/2012] [Indexed: 12/05/2022] Open
Abstract
Introduction Events normally taking place in the terminal chondrocyte differentiation in the growth plate are also observed during osteoarthritis (OA) development, suggesting that molecules, such as Wnts and bone morphogenetic proteins (BMPs) regulating chondrocyte activity in the growth plate, may play a key role in osteoarthritis pathogenesis. The aim of the study was to investigate the possible cross-talk between BMP-2 and Wnt/β-catenin pathways in OA progression. Methods Low-density-lipoprotein receptor-related protein 5 (LRP-5) and 6, BMP-2, -4, and -7, bone morphogenetic protein receptor-IA and IB (BMPR-IA and BMPR-IA), lymphoid enhancer factor-1 (LEF-1), and transcription factor 4 (TCF-4) expression levels were investigated in normal and osteoarthritic chondrocytes. LRP-5, β-catenin (phospho and active form), matrix metalloproteinases (MMPs) 7, 9, 13, 14, ADAMTS-4, 5, as well as collagen X (COL10A1) expression levels were evaluated after LRP-5 silencing in BMP-2-treated chondrocytes. The investigation of Smad1/5/8 binding to LRP-5 promoter was assessed with chromatin immunoprecipitation (ChIP). Furthermore, we evaluated the effect of experimental activation of the Wnt/β-catenin pathway with LiCl and LEF-1 silencing, in LiCl-treated chondrocytes, on matrix metalloproteinases (MMPs) 7, 9, 13, 14, ADAMTS-4, 5, and collagen X (COL10A1) expression, as well as possible interactions between LEF-1 and MMPs and COL10A1 promoters by using a ChIP assay. Results LRP-5, BMP-2, BMP-4, BMPR-IA, and LEF-1 mRNA and protein expression levels were found to be significantly upregulated in osteoarthritic chondrocytes compared with normal. We showed that treatment of cultured chondrocytes with BMP-2 resulted in increased β-catenin nuclear translocation and LRP-5 expression and that the BMP-2-induced LRP-5 upregulation is mediated through Smad1/5/8 binding on LRP-5 promoter. LRP-5 silencing reduced nuclear β-catenin protein levels, MMPs and collagen X expression, whereas increased phospho-β-catenin protein levels in BMP-2-treated chondrocyte. Furthermore, we demonstrated that activation of the Wnt/β-catenin signaling pathway by LiCl and LEF-1 downregulation by using siRNA regulates MMP-9, 13, 14, ADAMTS-5, and COL10A1 expression, evidenced by the observed strong binding of LEF-1 to MMP-9, 13, 14, ADAMTS-5 and COL10A promoters. Conclusions Our findings suggest, for the first time to our knowledge, that BMP-2-induced Wnt/β-catenin signaling activation through LRP-5 may contribute to chondrocyte hypertrophy and cartilage degradation in osteoarthritis.
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Affiliation(s)
- Ioanna Papathanasiou
- Laboratory of Cytogenetics and Molecular Genetics, University of Thessaly, School of Medicine, Mezourlo, Larissa, 41100, Greece
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