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Jokelainen O, Rintala TJ, Fortino V, Pasonen-Seppänen S, Sironen R, Nykopp TK. Differential expression analysis identifies a prognostically significant extracellular matrix-enriched gene signature in hyaluronan-positive clear cell renal cell carcinoma. Sci Rep 2024; 14:10626. [PMID: 38724670 PMCID: PMC11082176 DOI: 10.1038/s41598-024-61426-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2023] [Accepted: 05/06/2024] [Indexed: 05/12/2024] Open
Abstract
Hyaluronan (HA) accumulation in clear cell renal cell carcinoma (ccRCC) is associated with poor prognosis; however, its biology and role in tumorigenesis are unknown. RNA sequencing of 48 HA-positive and 48 HA-negative formalin-fixed paraffin-embedded (FFPE) samples was performed to identify differentially expressed genes (DEG). The DEGs were subjected to pathway and gene enrichment analyses. The Cancer Genome Atlas Kidney Renal Clear Cell Carcinoma (TCGA-KIRC) data and DEGs were used for the cluster analysis. In total, 129 DEGs were identified. HA-positive tumors exhibited enhanced expression of genes related to extracellular matrix (ECM) organization and ECM receptor interaction pathways. Gene set enrichment analysis showed that epithelial-mesenchymal transition-associated genes were highly enriched in the HA-positive phenotype. A protein-protein interaction network was constructed, and 17 hub genes were discovered. Heatmap analysis of TCGA-KIRC data identified two prognostic clusters corresponding to HA-positive and HA-negative phenotypes. These clusters were used to verify the expression levels and conduct survival analysis of the hub genes, 11 of which were linked to poor prognosis. These findings enhance our understanding of hyaluronan in ccRCC.
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Affiliation(s)
- Otto Jokelainen
- Institute of Clinical Medicine, Pathology and Forensic Medicine, University of Eastern Finland, Kuopio Campus, P.O. Box 1627, 70211, Kuopio, Finland.
- Department of Clinical Pathology, Kuopio University Hospital, Kuopio, Finland.
| | - Teemu J Rintala
- Institute of Biomedicine, University of Eastern Finland, Kuopio, Finland
| | - Vittorio Fortino
- Institute of Biomedicine, University of Eastern Finland, Kuopio, Finland
| | | | - Reijo Sironen
- Institute of Clinical Medicine, Pathology and Forensic Medicine, University of Eastern Finland, Kuopio Campus, P.O. Box 1627, 70211, Kuopio, Finland
- Department of Clinical Pathology, Kuopio University Hospital, Kuopio, Finland
| | - Timo K Nykopp
- Department of Surgery, Kuopio University Hospital, Kuopio, Finland
- Institute of Clinical Medicine, Surgery, University of Eastern Finland, Kuopio, Finland
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2
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Karataş F, Acat M, Karatas HG, İnci F, Dikiş ÖS. The importance of biglycan, decorin and TGF-1 levels in the diagnosis of non-small cell lung cancer. Cancer Biomark 2023:CBM230238. [PMID: 38217588 DOI: 10.3233/cbm-230238] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2024]
Abstract
BACKGROUND Despite Non-small cell lung cancer (NSCLC) ranks among the most deadly cancers worldwide, and currently, apart from a low percentage, targetable molecules have not been identified in its etiopathogenesis. The relationship between the proteoglycans decorin and biglycan, which are present in the extracellular matrix of cells, and transforming growth factor Beta-1 (TGF-B1), has been shown in many cancers. We investigated the significance of these molecules in NSCLC. METHODS Fasting serum levels of decorin, biglycan, and TGF-B1 were obtained from 48 newly diagnosed NSCLC patients and compared with those of 48 adult control subjects matched for age and demographics. Demographic data, baseline laboratory values, and ELISA results were compared between the groups. RESULTS The median age was 65(39-83) similar in both groups. There was no relation between demographic and clinical parameters and the levels of decorin, biglycan, and TGF-B1 in the NSCLC group. However, in comparison to the control group, NSCLC patients had significantly higher levels of biglycan (42.55 ± 27.40 vs. 24.38 ± 12.05 ng/mL, p= 0.026) and TGF-B1 (15.55 ± 9.16 vs. 10.07 ± 7.8 pg/mL, p= 0.001), while decorin levels were significantly lower (6.64 ± 1.92 vs. 10.28 ± 3.13 ng/mL, p= 0.002). In the multivariate regression analysis; Decorin < 8.13 ng/mL (OR, 10.96; 95% CI: 3.440-34.958), current smoking (OR, 3.81; 95% CI: 1.320-10.998), COPD (OR, 43.6; 95% CI: 2.082-913.081), and lower BMI (OR, 1.22; 95% CI: 1.070-1.405, p= 0.003) were identified as independent predictive markers for NSCLC diagnosis. CONCLUSION The decreased serum decorin level is an independent marker for NSCLC. Further studies are needed to investigate the prognostic significance of decorin on survival and its potential as a target in treatment.
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Affiliation(s)
- Fatih Karataş
- Department of Medical Oncology, Faculty of Medicine, Karabuk University, Karabuk, Turkey
| | - Murat Acat
- Cagsu Hospital, Department of Pulmonary Disease, Düzce, Turkey
| | - Hatice Gulsah Karatas
- Department of Physical Treatment and Rehabilitation, Faculty of Medicine, Karabuk University, Karabuk, Turkey
| | - Fatih İnci
- Department of Medical Oncology, Faculty of Medicine, Karabuk University, Karabuk, Turkey
| | - Özlem Sengören Dikiş
- Department of Pulmonary Disease, Faculty of Medicine, Mugla Sitki Kocman University, Mugla, Turkey
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3
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Zou X, Zhang X, Han S, Wei L, Zheng Z, Wang Y, Xin J, Zhang S. Pathogenesis and therapeutic implications of matrix metalloproteinases in intervertebral disc degeneration: A comprehensive review. Biochimie 2023; 214:27-48. [PMID: 37268183 DOI: 10.1016/j.biochi.2023.05.015] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2022] [Revised: 05/22/2023] [Accepted: 05/22/2023] [Indexed: 06/04/2023]
Abstract
Intervertebral disc (IVD) degeneration (IDD) is a common disorder that affects the spine and is a major cause of lower back pain (LBP). The extracellular matrix (ECM) is the structural foundation of the biomechanical properties of IVD, and its degradation is the main pathological characteristic of IDD. Matrix metalloproteinases (MMPs) are a group of endopeptidases that play an important role in the degradation and remodeling of the ECM. Several recent studies have shown that the expression and activity of many MMP subgroups are significantly upregulated in degenerated IVD tissue. This upregulation of MMPs results in an imbalance of ECM anabolism and catabolism, leading to the degradation of the ECM and the development of IDD. Therefore, the regulation of MMP expression is a potential therapeutic target for the treatment of IDD. Recent research has focused on identifying the mechanisms by which MMPs cause ECM degradation and promote IDD, as well as on developing therapies that target MMPs. In summary, MMP dysregulation is a crucial factor in the development of IDD, and a deeper understanding of the mechanisms involved is needed to develop effective biological therapies that target MMPs to treat IDD.
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Affiliation(s)
- Xiaosong Zou
- Department of Spinal Surgery, The First Hospital of Jilin University, Changchun, 130021, China; Jilin Engineering Research Center for Spine and Spinal Cord Injury, Changchun, 130021, China
| | - Xingmin Zhang
- Department of Spinal Surgery, The First Hospital of Jilin University, Changchun, 130021, China; Jilin Engineering Research Center for Spine and Spinal Cord Injury, Changchun, 130021, China
| | - Song Han
- Department of Spinal Surgery, The First Hospital of Jilin University, Changchun, 130021, China; Jilin Engineering Research Center for Spine and Spinal Cord Injury, Changchun, 130021, China
| | - Lin Wei
- Department of Spinal Surgery, The First Hospital of Jilin University, Changchun, 130021, China; Jilin Engineering Research Center for Spine and Spinal Cord Injury, Changchun, 130021, China
| | - Zhi Zheng
- Department of Spinal Surgery, The First Hospital of Jilin University, Changchun, 130021, China; Jilin Engineering Research Center for Spine and Spinal Cord Injury, Changchun, 130021, China
| | - Yongjie Wang
- Department of Spinal Surgery, The First Hospital of Jilin University, Changchun, 130021, China; Jilin Engineering Research Center for Spine and Spinal Cord Injury, Changchun, 130021, China
| | - Jingguo Xin
- Department of Spinal Surgery, The First Hospital of Jilin University, Changchun, 130021, China; Jilin Engineering Research Center for Spine and Spinal Cord Injury, Changchun, 130021, China
| | - Shaokun Zhang
- Department of Spinal Surgery, The First Hospital of Jilin University, Changchun, 130021, China; Jilin Engineering Research Center for Spine and Spinal Cord Injury, Changchun, 130021, China.
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4
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Kubo E, Shibata S, Shibata T, Sasaki H, Singh DP. Role of Decorin in the Lens and Ocular Diseases. Cells 2022; 12:cells12010074. [PMID: 36611867 PMCID: PMC9818407 DOI: 10.3390/cells12010074] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2022] [Revised: 12/15/2022] [Accepted: 12/19/2022] [Indexed: 12/28/2022] Open
Abstract
Decorin is an archetypal member of the small leucine-rich proteoglycan gene family and is involved in various biological functions and many signaling networks, interacting with extra-cellular matrix (ECM) components, growth factors, and receptor tyrosine kinases. Decorin also modulates the growth factors, cell proliferation, migration, and angiogenesis. It has been reported to be involved in many ischemic and fibrotic eye diseases, such as congenital stromal dystrophy of the cornea, anterior subcapsular fibrosis of the lens, proliferative vitreoretinopathy, et al. Furthermore, recent evidence supports its role in secondary posterior capsule opacification (PCO) after cataract surgery. The expression of decorin mRNA in lens epithelial cells in vitro was found to decrease upon transforming growth factor (TGF)-β-2 addition and increase upon fibroblast growth factor (FGF)-2 addition. Wound healing of the injured lens in mice transgenic for lens-specific human decorin was promoted by inhibiting myofibroblastic changes. Decorin may be associated with epithelial-mesenchymal transition and PCO development in the lens. Gene therapy and decorin administration have the potential to serve as excellent therapeutic approaches for modifying impaired wound healing, PCO, and other eye diseases related to fibrosis and angiogenesis. In this review, we present findings regarding the roles of decorin in the lens and ocular diseases.
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Affiliation(s)
- Eri Kubo
- Department of Ophthalmology, Kanazawa Medical University, Kanazawa 920-0293, Ishikawa, Japan
- Correspondence: ; Tel.: +81-76-286-2211 (ext. 3412); Fax: +81-76-286-1010
| | - Shinsuke Shibata
- Department of Ophthalmology, Kanazawa Medical University, Kanazawa 920-0293, Ishikawa, Japan
| | - Teppei Shibata
- Department of Ophthalmology, Kanazawa Medical University, Kanazawa 920-0293, Ishikawa, Japan
| | - Hiroshi Sasaki
- Department of Ophthalmology, Kanazawa Medical University, Kanazawa 920-0293, Ishikawa, Japan
| | - Dhirendra P. Singh
- Department of Ophthalmology, University of Nebraska Medical Center, Omaha, NE 68198, USA
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5
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The Proteolysis of ECM in Intervertebral Disc Degeneration. Int J Mol Sci 2022; 23:ijms23031715. [PMID: 35163637 PMCID: PMC8835917 DOI: 10.3390/ijms23031715] [Citation(s) in RCA: 41] [Impact Index Per Article: 20.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2021] [Revised: 01/28/2022] [Accepted: 01/29/2022] [Indexed: 12/12/2022] Open
Abstract
Intervertebral disc (IVD) degeneration (IDD) is a pathological process that commonly occurs throughout the human life span and is a major cause of lower back pain. Better elucidation of the molecular mechanisms involved in disc degeneration could provide a theoretical basis for the development of lumbar disc intervention strategies. In recent years, extracellular matrix (ECM) homeostasis has received much attention due to its relevance to the mechanical properties of IVDs. ECM proteolysis mediated by a variety of proteases is involved in the pathological process of disc degeneration. Here, we discuss in detail the relationship between the IVD as well as the ECM and the role of ECM proteolysis in the degenerative process of the IVD. Targeting ECM proteolysis-associated proteases may be an effective means of intervention in IDD.
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Xu X, Chu Y, Zhang Y, Li G, Yang P, Zhang J, Duan J, Yang H, Xu H, Wang M. Chondrocyte Adipogenic Differentiation in Softening Osteoarthritic Cartilage. J Dent Res 2021; 101:655-663. [PMID: 34903082 DOI: 10.1177/00220345211057539] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
A chondrocyte-to-osteoblast lineage continuum exists in the growth plate. Adipogenic differentiation of chondrocytes in vivo should be investigated. Here, unilateral anterior crossbite (UAC), which can induce osteoarthritic lesions in the temporomandibular joint (TMJ), was applied to 6-wk-old C57BL/6 mice. Matrix loss in TMJ cartilage was obvious, as demonstrated by safranin O staining, and the condylar cartilage elastic modulus values, detected by using atomic force microscopy (AFM), were reduced, indicating cartilage softening that might be linked with loss of the highly charged proteoglycan. By crossing the Rosa26/tdTomato (TdT) mice with Sox9;CreERT2 mice or with Col10;CreERT2 mice, we obtained the Sox9-TdT and Col10-TdT strains, respectively, in which the Sox9- or Col10-expressing cells, accordingly, were labeled by TdT. A few TdT-labeled cells in both strains expressed AdipoQ or DMP-1. The Sox9-TdT+AdipoQ+ cells were primarily located in the deep zone cartilage and then in the whole cartilage. Col10-TdT+AdipoQ+ cells, Sox9-TdT+DMP-1+ cells, and Col10-TdT+DMP-1+ cells were located in the deep zone region. UAC promoted AdipoQ and DMP-1 expression in cartilage. The percentages of Sox9-TdT+AdipoQ+ and Col10-TdT+AdipoQ+ cells to Sox9-TdT+ and Col10-TdT+ cells, respectively, were increased (both P < 0.05), implying that more chondrocytes were undergoing adipogenic differentiation in the UAC group, the cartilage of which was softened. The percentages of Sox9-TdT+DMP-1+ and Col10-TdT+DMP-1+ cells to Sox9-TdT+ cells and Col10-TdT+ cells, respectively, were increased (both P < 0.05), consistent with our report that UAC enhanced deep zone cartilage calcification, causing stiffening of the deep zone cartilage. Our present data demonstrated that TMJ chondrocyte descendants can become adipogenic in vivo in addition to becoming osteogenic. This potential was promoted in osteoarthritic cartilage, in which deep zone cartilage calcification-associated cartilage stiffening and proteoglycan loss-associated cartilage softening were both stimulated.
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Affiliation(s)
- X Xu
- School of Stomatology, The Third Affiliated Hospital of Xinxiang Medical University, Xinxiang, China.,Department of Oral Anatomy and Physiology and Clinic of Temporomandibular Joint Disorders and Oral and Maxillofacial Pain, The Fourth Military Medical University, Xi'an, China
| | - Y Chu
- Department of Oral Anatomy and Physiology and Clinic of Temporomandibular Joint Disorders and Oral and Maxillofacial Pain, The Fourth Military Medical University, Xi'an, China.,Key Laboratory for Space Bioscience and Biotechnology, School of Life Sciences, Northwestern Polytechnical University, Xi'an, China
| | - Y Zhang
- Department of Oral Anatomy and Physiology and Clinic of Temporomandibular Joint Disorders and Oral and Maxillofacial Pain, The Fourth Military Medical University, Xi'an, China
| | - G Li
- Key Laboratory for Space Bioscience and Biotechnology, School of Life Sciences, Northwestern Polytechnical University, Xi'an, China
| | - P Yang
- Key Laboratory for Space Bioscience and Biotechnology, School of Life Sciences, Northwestern Polytechnical University, Xi'an, China.,Research & Development Institute in Shenzhen, Northwestern Polytechnical University, Shenzhen, Guangdong, China
| | - J Zhang
- Department of Oral Anatomy and Physiology and Clinic of Temporomandibular Joint Disorders and Oral and Maxillofacial Pain, The Fourth Military Medical University, Xi'an, China
| | - J Duan
- Department of Oral Anatomy and Physiology and Clinic of Temporomandibular Joint Disorders and Oral and Maxillofacial Pain, The Fourth Military Medical University, Xi'an, China
| | - H Yang
- Department of Oral Anatomy and Physiology and Clinic of Temporomandibular Joint Disorders and Oral and Maxillofacial Pain, The Fourth Military Medical University, Xi'an, China
| | - H Xu
- Key Laboratory for Space Bioscience and Biotechnology, School of Life Sciences, Northwestern Polytechnical University, Xi'an, China.,Research Center of Special Environmental Biomechanics & Medical Engineering, Northwestern Polytechnical University, Xi'an, China
| | - M Wang
- School of Stomatology, The Third Affiliated Hospital of Xinxiang Medical University, Xinxiang, China.,Department of Oral Anatomy and Physiology and Clinic of Temporomandibular Joint Disorders and Oral and Maxillofacial Pain, The Fourth Military Medical University, Xi'an, China
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7
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Zhang TW, Li ZF, Ding W, Wang HR, Ding SL, Han GJ, Li XL, Dong J, Jiang LB. Decorin inhibits nucleus pulposus apoptosis by matrix-induced autophagy via the mTOR pathway. J Orthop Res 2021; 39:1777-1788. [PMID: 33034924 DOI: 10.1002/jor.24882] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/15/2020] [Revised: 09/08/2020] [Accepted: 10/06/2020] [Indexed: 02/04/2023]
Abstract
Decorin (Dcn) is a member of the class I small leucine-rich proteoglycans, whose expression in the nucleus pulposus (NP) of intervertebral discs (IVDs) has been shown to increase with aging in humans and sheep. Dcn induces autophagy in endothelial cells; however, its precise role in NP and IVD degeneration during aging is not well understood. We addressed this question in the present study by treating rat nucleus pulposus cells (NPCs) with different concentrations of Dcn. The Western blot analysis and terminal deoxynucleotidyl transferase dUTP nick end labeling assay results showed that Dcn treatment induced autophagy and decreased apoptosis caused by interleukin (IL)-1β application. This effect was dependent on the protein kinase B/mechanistic target of rapamycin (mTOR)/p70 S6 kinase signaling. Dcn treatment also decreased the expression of matrix metalloproteinase-3 and -13 and decreased the IL-1β-induced attenuation of collagen type II and aggrecan levels. The role of Dcn in stimulating autophagy was further supported by the fact that the observed effects were abrogated by knocking down autophagy-related protein 7 with Atg7 small interfering RNA. Thus, Dcn protects NPCs in IVDs from IL-1β-induced apoptosis and degeneration by promoting autophagy through mTOR signaling.
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Affiliation(s)
- Tai-Wei Zhang
- Department of Orthopaedic Surgery, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Ze-Fang Li
- Department of Orthopaedic Surgery, Zhongshan Hospital, Fudan University, Shanghai, China.,Department of Orthopaedic Surgery, Qianjiang Central Hospital of Chongqing, Chongqing, China
| | - Wang Ding
- Department of Orthopaedic Surgery, Minhang Hospital, Fudan University, Shanghai, China
| | - Hui-Ren Wang
- Department of Orthopaedic Surgery, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Sheng-Long Ding
- Department of Orthopaedic Surgery, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Guan-Jie Han
- Department of Orthopaedic Surgery, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Xi-Lei Li
- Department of Orthopaedic Surgery, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Jian Dong
- Department of Orthopaedic Surgery, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Li-Bo Jiang
- Department of Orthopaedic Surgery, Zhongshan Hospital, Fudan University, Shanghai, China
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8
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Zhang S, Liu B, Wang W, Lv L, Gao D, Chai M, Li M, Wu Z, Zhu Y, Ma J, Leng L. The "Matrisome" reveals the characterization of skin keloid microenvironment. FASEB J 2021; 35:e21237. [PMID: 33715180 DOI: 10.1096/fj.202001660rr] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2020] [Revised: 10/29/2020] [Accepted: 11/16/2020] [Indexed: 02/06/2023]
Abstract
Keloids are fibroproliferative dermal tumors of unknown origin that are characterized by the overabundant accumulation of extracellular matrix (ECM) components. The mechanism of keloid formation has remained unclear because of a poor understanding of its molecular basis. In this study, the dermal ECM components of keloids were identified and the pathological features of keloid formation were characterized using large-scale quantitative proteomic analyses of decellularized keloid biomatrix scaffolds. We identified a total of 267 dermal core ECM and ECM-associated proteins that were differentially expressed between patients with keloids and healthy controls. Skin mechanical properties and biological processes including protease activity, wound healing, and adhesion were disordered in keloids. The integrated network analysis of the upregulated ECM proteins revealed multiple signaling pathways involved in these processes that may lead to keloid formation. Our findings may improve the scientific basis of keloid treatment and provide new ideas for the establishment of keloid models.
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Affiliation(s)
- Shikun Zhang
- Stem Cell and Regenerative Medicine Lab, Department of Medical Science Research Center, Translational Medicine Center, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, China.,Department of Stem Cell and Regenerative Medicine Laboratory, Institute of Health Service and Transfusion Medicine, Beijing, China
| | - Binghui Liu
- State Key Laboratory of Proteomics, Beijing Proteome Research Center, National Center for Protein Sciences (Beijing), Beijing Institute of Life Omics, Beijing, China
| | - Wenjuan Wang
- Department of Dermatology, Chinese PLA General Hospital, Beijing, China
| | - Luye Lv
- Institute of NBC Defense, Beijing, China
| | - Dunqin Gao
- Stem Cell and Regenerative Medicine Lab, Department of Medical Science Research Center, Translational Medicine Center, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, China
| | - Mi Chai
- Department of Plastic and Reconstruction Surgery, Chinese PLA General Hospital, Beijing, China
| | - Mansheng Li
- State Key Laboratory of Proteomics, Beijing Proteome Research Center, National Center for Protein Sciences (Beijing), Beijing Institute of Life Omics, Beijing, China
| | - Zhihong Wu
- Stem Cell and Regenerative Medicine Lab, Department of Medical Science Research Center, Translational Medicine Center, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, China
| | - Yunping Zhu
- State Key Laboratory of Proteomics, Beijing Proteome Research Center, National Center for Protein Sciences (Beijing), Beijing Institute of Life Omics, Beijing, China.,Basic Medical School, Anhui Medical University, Anhui, China
| | - Jie Ma
- State Key Laboratory of Proteomics, Beijing Proteome Research Center, National Center for Protein Sciences (Beijing), Beijing Institute of Life Omics, Beijing, China
| | - Ling Leng
- Stem Cell and Regenerative Medicine Lab, Department of Medical Science Research Center, Translational Medicine Center, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, China
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Neointimal Hyperplasia after Carotid Transection and Anastomosis Surgery is Associated with Degradation of Decorin and Platelet Derived Growth Factor Signaling. JVS Vasc Sci 2020; 2:2-12. [PMID: 33842897 PMCID: PMC8034587 DOI: 10.1016/j.jvssci.2020.09.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
Abstract
Objective Intimal hyperplasia (IH) is the expansion of the vascular intimal region after intervention, which can lead to stenosis and eventual failure of vascular grafts or interventional procedures such as angioplasty or stent placement. Our goals were to investigate the development of IH in a rabbit open surgical model and to evaluate the associated pathophysiologic processes involving decorin and the platelet-derived growth factor-BB/platelet-derived growth factor receptor-β/mitogen-activated protein kinase (PDGF-BB/PDGFR-β/MAPK) pathway. Methods We conducted carotid transection and primary anastomosis on five New Zealand white rabbits to induce IH and examined the associated pathophysiologic changes. Tissue was obtained for histological and protein analysis on postoperative day 21 using the contralateral vessel as a control. Intimal medial thickness (IMT) was calculated to measure IH and compared with the unoperated side. Western blot analysis was performed on tissue lysates to determine the expression of decorin core protein, PDGF-BB, PDGFR-β, and phosphorylated-MAPK (ph-MAPK). Immunofluorescence microscopy was used to assess tissue distribution of matrix metalloproteinase-2 (MMP-2) and ph-PDGFR-β. Results Bilateral carotid arteries were harvested on postoperative day 21. We compared the IMT in operated with unoperated specimens. IMT was significantly elevated in operated arteries vs unoperated arteries in all five animals (148.6 μm ± 9.09 vs 103.40 μm ± 7.08; 135.2 μm ± 8.30 vs 92.40 μm ± 2.35; 203.1 μm ± 30.23 vs 104.00 μm ± 4.52; 236.2 μm ± 27.22 vs 141.50 μm ± 9.95; 226.9 μm ± 11.12 vs 98.8 μm ± 3.78). Western blot analysis revealed degradation of decorin protein in the operated tissue, including loss of a 50 kDa band and the appearance of a cleaved fragment at 10 kDa. Decorin and MMP-2 were observed, via immunofluorescence microscopy, in the neointima of the operated vessels. Western blot analysis also revealed increased PDGF-BB, PDGFR-β, and ph-MAPK levels in operated tissue. Immunofluorescent staining for ph-PDGFR-β primarily localized to the neointima, indicating increased signaling through PDGF in this region. Conclusions Carotid transection and primary reanastomosis in rabbits induced IH that was associated with MMP-2 activation, degradation of decorin, and activation of the PDGF/PDGFR-β/MAPK pathway. The findings in this study should lead to further mechanistic evaluation of these pathways to better understand the potential to modify the intimal hyperplastic response to surgery. (JVS–Vascular Science 2020;2:2-12.) Clinical Relevance Intimal hyperplasia remains a significant challenge to the vascular surgeon in open and interventional procedures. Basic science studies have made headway into understanding the process, but this has not translated into many therapeutic options particularly for primary prevention after a procedure. Decorin is gaining popularity as an important mediator of various pathophysiologic processes involving the extracellular matrix. We sought to determine the possible role of decorin in the development of neointimal hyperplasia in an open surgical model. This study provides a replicable model for the development of intimal hyperplasia and potential therapeutic targets going forward.
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10
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Birch JL, Coull BJ, Spender LC, Watt C, Willison A, Syed N, Chalmers AJ, Hossain-Ibrahim MK, Inman GJ. Multifaceted transforming growth factor-beta (TGFβ) signalling in glioblastoma. Cell Signal 2020; 72:109638. [PMID: 32320860 DOI: 10.1016/j.cellsig.2020.109638] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2019] [Revised: 04/13/2020] [Accepted: 04/14/2020] [Indexed: 12/15/2022]
Abstract
Glioblastoma (GBM) is an aggressive and devastating primary brain cancer which responds very poorly to treatment. The average survival time of patients is only 14-15 months from diagnosis so there is a clear and unmet need for the development of novel targeted therapies to improve patient outcomes. The multifunctional cytokine TGFβ plays fundamental roles in development, adult tissue homeostasis, tissue wound repair and immune responses. Dysfunction of TGFβ signalling has been implicated in both the development and progression of many tumour types including GBM, thereby potentially providing an actionable target for its treatment. This review will examine TGFβ signalling mechanisms and their role in the development and progression of GBM. The targeting of TGFβ signalling using a variety of approaches including the TGFβ binding protein Decorin will be highlighted as attractive therapeutic strategies.
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Affiliation(s)
| | - Barry J Coull
- Division of Cellular and Molecular Medicine, School of Medicine, University of Dundee, Dundee, UK
| | - Lindsay C Spender
- Division of Molecular and Clinical Medicine, School of Medicine, University of Dundee, Dundee, UK
| | - Courtney Watt
- Division of Cellular and Molecular Medicine, School of Medicine, University of Dundee, Dundee, UK
| | - Alice Willison
- Division of Cellular and Molecular Medicine, School of Medicine, University of Dundee, Dundee, UK
| | - Nelofer Syed
- The John Fulcher Molecular Neuro-Oncology Laboratory, Division of Brain Sciences, Imperial College London, London, UK
| | | | - M Kismet Hossain-Ibrahim
- Division of Cellular and Molecular Medicine, School of Medicine, University of Dundee, Dundee, UK; Department of Neurosurgery, Ninewells Hospital and Medical School, NHS Tayside, Dundee, UK
| | - Gareth J Inman
- CRUK Beatson Institute, Glasgow, UK; Division of Cellular and Molecular Medicine, School of Medicine, University of Dundee, Dundee, UK; Institute of Cancer Sciences, University of Glasgow, Glasgow, UK.
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11
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Reszegi A, Horváth Z, Fehér H, Wichmann B, Tátrai P, Kovalszky I, Baghy K. Protective Role of Decorin in Primary Hepatocellular Carcinoma. Front Oncol 2020; 10:645. [PMID: 32477937 PMCID: PMC7235294 DOI: 10.3389/fonc.2020.00645] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2019] [Accepted: 04/07/2020] [Indexed: 01/22/2023] Open
Abstract
Hepatocellular carcinoma (HCC) represents one of the most frequent type of primary liver cancers. Decorin, a small leucine-rich proteoglycan of the extracellular matrix, represents a powerful tumor cell growth and migration inhibitor by hindering receptor tyrosine kinases and inducing p21WAF1/CIP1. In this study, first we tested decorin expression in HCCs utilizing in silico data, as well as formalin fixed paraffin embedded tissue samples of HCC in a tissue microarray (TMA). In silico data revealed that DCN/SMA mRNA ratio is decreased in HCC compared to normal tissues and follows the staging of the disease. Among TMA samples, 52% of HCCs were decorin negative, 33% exhibited low, and 15% high decorin levels corroborating in silico results. In addition, applying conditioned media of hepatoma cells inhibited decorin expression in LX2 stellate cells in vitro. These results raise the possibility that decorin acts as a tumor suppressor in liver cancer and that is why its expression decreased in HCCs. To further test the protective role of decorin, the proteoglycan was overexpressed in a mouse model of hepatocarcinogenesis evoked by thioacetamide (TA). After transfection, the excessive proteoglycan amount was mainly detected in hepatocytes around the central veins. Upon TA-induced hepatocarcinogenesis, the highest tumor count was observed in mice with no decorin production. Decorin gene delivery reduced tumor formation, in parallel with decreased pEGFR, increased pIGF1R levels, and with concomitant induction of pAkt (T308) and phopho-p53, suggesting a novel mechanism of action. Our results suggest the idea that decorin can be utilized as an anti-cancer agent.
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Affiliation(s)
- Andrea Reszegi
- 1st Department of Pathology and Experimental Cancer Research, Semmelweis University, Budapest, Hungary
| | - Zsolt Horváth
- 1st Department of Pathology and Experimental Cancer Research, Semmelweis University, Budapest, Hungary
| | - Hajnalka Fehér
- 1st Department of Pathology and Experimental Cancer Research, Semmelweis University, Budapest, Hungary
| | - Barnabás Wichmann
- 2nd Department of Internal Medicine, Semmelweis University, Budapest, Hungary
| | | | - Ilona Kovalszky
- 1st Department of Pathology and Experimental Cancer Research, Semmelweis University, Budapest, Hungary
| | - Kornélia Baghy
- 1st Department of Pathology and Experimental Cancer Research, Semmelweis University, Budapest, Hungary
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12
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Wang M, Li Z, Zhang M, Wang H, Zhang Y, Feng Y, Liu Y, Chen J. Decorin knockdown affects the gene expression profile of adhesion, growth and extracellular matrix metabolism in C-28/I2 chondrocytes. PLoS One 2020; 15:e0232321. [PMID: 32353084 PMCID: PMC7192450 DOI: 10.1371/journal.pone.0232321] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2020] [Accepted: 04/12/2020] [Indexed: 11/22/2022] Open
Abstract
Decorin is a member of small leucine-rich proteoglycan family, which is involved in multiple biological functions mainly as a structural and signaling molecule, and disturbances in its own metabolism plays a crucial role in the pathogenesis of osteoarthropathy. In this study, we aim to further explore the biological function of decorin and their role in human chondrocyte cell line, C28/I2. Lentivirus-mediated shRNA was applied to down-regulate decorin expression in C28/I2 chondrocytes. Effect of decorin knockdown on gene expression profiles was determined by RNA sequencing followed by bioinformatics analysis. MTT, adhesion assays and flow cytometry were used to investigate the effect of decorin knockdown on cell proliferation, adhesion, and apoptosis. sGAG content in the culture medium was determined by DMMB assay. Stably transfected C28/I2 cells were seeded onto the cancellous bone matrix gelatin (BMG) to construct tissue-engineered cartilage. The histological patterns were evaluated by H&E and Toluidine blue staining. In this study, 1780 differentially expressed genes (DEGs) including 864 up-regulated and 916 down-regulated genes were identified using RNA-Seq. The reliability of the gene expression was further verified by qRT-PCR. GO and KEGG pathway enrichment analysis revealed diverse cellular processes were affected by decorin silencing such as: cell adhesion, growth, and metabolism of extracellular matrix. In addition, we confirmed that down-regulation of decorin significantly suppressed cell proliferation and adhesion and induced apoptosis. The sGAG content in the media was significantly increased after decorin silencing. Engineered articular tissues in the decorin knockdown group exhibited cartilage destruction and proteoglycan loss as evidenced by H&E and Toluidine blue stains. Overall, this combined data helps to provide a comprehensive understanding of the roles of decorin following its knockdown in C28/I2 cells.
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Affiliation(s)
- Mengying Wang
- Institute of Endemic Diseases, School of Public Health, Xi'an Jiaotong University Health Science Center, Xi'an, Shaanxi, PR China
| | - Zhengzheng Li
- Institute of Endemic Diseases, School of Public Health, Xi'an Jiaotong University Health Science Center, Xi'an, Shaanxi, PR China
| | - Meng Zhang
- Institute of Endemic Diseases, School of Public Health, Xi'an Jiaotong University Health Science Center, Xi'an, Shaanxi, PR China
| | - Hui Wang
- Institute of Endemic Diseases, School of Public Health, Xi'an Jiaotong University Health Science Center, Xi'an, Shaanxi, PR China
| | - Ying Zhang
- Institute of Endemic Diseases, School of Public Health, Xi'an Jiaotong University Health Science Center, Xi'an, Shaanxi, PR China
| | - Yiping Feng
- Institute of Endemic Diseases, School of Public Health, Xi'an Jiaotong University Health Science Center, Xi'an, Shaanxi, PR China
| | - Yinan Liu
- Institute of Endemic Diseases, School of Public Health, Xi'an Jiaotong University Health Science Center, Xi'an, Shaanxi, PR China
| | - Jinghong Chen
- Institute of Endemic Diseases, School of Public Health, Xi'an Jiaotong University Health Science Center, Xi'an, Shaanxi, PR China
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13
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Abstract
Tendons connect muscles to bones to transfer the forces necessary for movement. Cell-cell junction proteins, cadherins and connexins, may play a role in tendon development and injury. In this review, we begin by highlighting current understanding of how cell-cell junctions may regulate embryonic tendon development and differentiation. We then examine cell-cell junctions in postnatal tendon, before summarizing the role of cadherins and connexins in adult tendons. More information exists regarding the role of cell-cell junctions in the formation and homeostasis of other musculoskeletal tissues, namely cartilage and bone. Therefore, to inform future tendon studies, we include a brief survey of cadherins and connexins in chondrogenesis and osteogenesis, and summarize how cell-cell junctions are involved in some musculoskeletal tissue pathologies. An enhanced understanding of how cell-cell junctions participate in tendon development, maintenance, and disease will benefit future regenerative strategies.
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Affiliation(s)
| | - Jett B Murray
- Biological Engineering, University of Idaho, Moscow, ID
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14
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McQuilling JP, Kimmerling KA, Staples MC, Mowry KC. Evaluation of two distinct placental-derived membranes and their effect on tenocyte responses in vitro. J Tissue Eng Regen Med 2019; 13:1316-1330. [PMID: 31062484 PMCID: PMC6771722 DOI: 10.1002/term.2876] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2018] [Revised: 03/05/2019] [Accepted: 04/29/2019] [Indexed: 11/10/2022]
Abstract
Tendon healing is a complex, multiphase process that results in increased scar tissue formation, leading to weaker tendons. The purpose of this study was to evaluate the response of tenocytes to both hypothermically stored amniotic membrane (HSAM) and dehydrated amnion/chorion membrane (dACM). Composition and growth factor release from HSAM and dACM were evaluated using proteomics microarrays. HSAM and dACM releasate was used to assess tenocyte proliferation, migration, gene expression, extracellular matrix (ECM) protein deposition, and response to inflammation. Additionally, tenocyte-ECM interactions were evaluated. HSAM and dACM contain and release growth factors relevant to tendon healing, including insulin-like growth factor I, platelet-derived growth factor, and basic fibroblast growth factor. Both dACM and HSAM promoted increased tenocyte proliferation and migration; tenocytes treated with dACM proliferated more robustly, whereas treatment with HSAM resulted in higher migration. Both dACM and HSAM resulted in altered ECM gene expression; dACM grafts alone resulted in increases in collagen deposition. Furthermore, both allografts resulted in altered tenocyte responses to inflammation with reduced transforming growth factor beta levels. Additionally, dACM treatment resulted in increased expression and production of matrix metalloprotease-1 (MMP-1), whereas HSAM treatment resulted in decreased production of MMP-1. Tenocytes migrated into and remodeled HSAM only. These results indicate that both grafts have properties that support tendon healing; however, the results presented here suggest that the responses to each type of graft may be different. Due to the complex environment during tendon repair, additional work is needed to evaluate these effects using in vivo models.
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Affiliation(s)
| | | | | | - Katie C Mowry
- Research and Development, Organogenesis, Birmingham, Alabama
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15
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Nyström A, Bruckner-Tuderman L. Matrix molecules and skin biology. Semin Cell Dev Biol 2018; 89:136-146. [PMID: 30076963 DOI: 10.1016/j.semcdb.2018.07.025] [Citation(s) in RCA: 63] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2018] [Revised: 06/26/2018] [Accepted: 07/31/2018] [Indexed: 01/02/2023]
Abstract
An extracellular matrix (ECM) is a prerequisite for multicellular life. It is adapted to tissues and constantly undergoes changes to preserve microenvironmental homeostasis. The ECM acts as a structural scaffold that establishes tissue architecture and provides tensile strength. It has cell-instructive functions by serving as a reservoir and presenter of soluble agents, being directly signaling, integrating transmission of mechanical and biological cues, or serving as a co-factor potentiating signaling. The skin contains a highly developed, mechanically tough, but yet flexible ECM. The tissue-specific features of this ECM are largely attributed by minor ECM components. A large number of genetic and acquired ECM diseases with skin manifestations, provide an illustrative testament to the importance of correct assembly of the ECM for dermal homeostasis. Here, we will present the composition and features of the skin ECM during homeostasis and regeneration. We will discuss genetic and acquired ECM diseases affecting skin, and provide a short outlook to therapeutic strategies for them.
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Affiliation(s)
- Alexander Nyström
- Department of Dermatology, Medical Faculty, Medical Center - University of Freiburg, Freiburg, Germany.
| | - Leena Bruckner-Tuderman
- Department of Dermatology, Medical Faculty, Medical Center - University of Freiburg, Freiburg, Germany
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16
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Sainio AO, Järveläinen HT. Decorin-mediated oncosuppression - a potential future adjuvant therapy for human epithelial cancers. Br J Pharmacol 2018; 176:5-15. [PMID: 29488209 PMCID: PMC6284329 DOI: 10.1111/bph.14180] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2017] [Revised: 01/22/2018] [Accepted: 01/29/2018] [Indexed: 12/24/2022] Open
Abstract
Currently, the multifaceted role of the extracellular matrix (ECM) in tumourigenesis has been realized. One ECM macromolecule exhibiting potent oncosuppressive actions in tumourigenesis is decorin, the prototype of the small leucine-rich proteoglycan gene family. The actions of decorin include its ability to function as an endogenous pan-receptor tyrosine kinase inhibitor, a regulator of both autophagy and mitophagy, as well as a modulator of the immune system. In this review, we will discuss these topics in more detail. We also provide a summary of preclinical studies exploring the value of decorin-mediated oncosuppression, as a potential future adjuvant therapy for epithelial cancers. LINKED ARTICLES: This article is part of a themed section on Translating the Matrix. To view the other articles in this section visit http://onlinelibrary.wiley.com/doi/10.1111/bph.v176.1/issuetoc.
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Affiliation(s)
- Annele Orvokki Sainio
- Institute of Biomedicine, Medical Biochemistry and Genetics, University of Turku, Kiinamyllynkatu 10, 20520, Turku, Finland
| | - Hannu Tapio Järveläinen
- Institute of Biomedicine, Medical Biochemistry and Genetics, University of Turku, Kiinamyllynkatu 10, 20520, Turku, Finland.,Department of Internal Medicine, Satakunta Central Hospital, Sairaalantie 3, 28500, Pori, Finland
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17
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Yu Y, Duan J, Leach FE, Toida T, Higashi K, Zhang H, Zhang F, Amster IJ, Linhardt RJ. Sequencing the Dermatan Sulfate Chain of Decorin. J Am Chem Soc 2017; 139:16986-16995. [PMID: 29111696 PMCID: PMC6298738 DOI: 10.1021/jacs.7b10164] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Glycomics represents one of the last frontiers and most challenging in omic analysis. Glycosylation occurs in the endoplasmic reticulum and the Golgi organelle and its control is neither well-understood nor predictable based on proteomic or genomic analysis. One of the most structurally complex classes of glycoconjugates is the proteoglycans (PGs) and their glycosaminoglycan (GAG) side chains. Previously, our laboratory solved the structure of the chondroitin sulfate chain of the bikunin PG. The current study examines the much more complex structure of the dermatan sulfate GAG chain of decorin PG. By utilizing sophisticated separation methods followed by compositional analysis, domain mapping, and tandem mass spectrometry coupled with analysis by a modified genetic algorithm approach, the structural motif for the decorin dermatan sulfate chain was determined. This represents the second example of a GAG with a prominent structural motif, suggesting that the structural variability of this class of glycoconjugates is somewhat simpler than had been expected.
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Affiliation(s)
- Yanlei Yu
- School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou, Zhejiang 310018, China
- Department of Chemistry and Chemical Biology, Center for Biotechnology and Interdisciplinary Studies
| | - Jiana Duan
- Department of Chemistry, University of Georgia, Athens, Georgia United States
| | - Franklin E. Leach
- Department of Chemistry, University of Georgia, Athens, Georgia United States
| | - Toshihiko Toida
- Graduate School of Pharmaceutical Sciences, Chiba University, Chiba, Japan
| | - Kyohei Higashi
- Graduate School of Pharmaceutical Sciences, Chiba University, Chiba, Japan
| | - Hong Zhang
- School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou, Zhejiang 310018, China
| | - Fuming Zhang
- Department of Chemistry and Chemical Biology, Center for Biotechnology and Interdisciplinary Studies
| | - I. Jonathan Amster
- Department of Chemistry, University of Georgia, Athens, Georgia United States
| | - Robert J. Linhardt
- Department of Chemistry and Chemical Biology, Center for Biotechnology and Interdisciplinary Studies
- Department of Biology, Rensselaer Polytechnic Institute, Troy, New York 12180, United States
- Department of Biomedical Engineering, Rensselaer Polytechnic Institute, Troy, New York 12180, United States
- Department of Chemical and Biological Engineering, Rensselaer Polytechnic Institute, Troy, New York 12180, United States
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18
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Simões RS, Soares JM, Simões MJ, Nader HB, Baracat MCP, Maciel GAR, Serafini PC, Azziz R, Baracat EC. Small leucine-rich proteoglycans (SLRPs) in the endometrium of polycystic ovary syndrome women: a pilot study. J Ovarian Res 2017; 10:54. [PMID: 28789706 PMCID: PMC5549392 DOI: 10.1186/s13048-017-0349-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2017] [Accepted: 07/20/2017] [Indexed: 01/09/2023] Open
Abstract
Background Small leucine-rich proteoglycans (SLRPs) play an important role in tissue homeostasis and cell proliferation since these proteoglycans sequester multiple growth factors. However, the content of SLRPs in the endometrium of polycystic ovary syndrome (PCOS) women is unknown. Our purpose was to test the hypothesis that excessive endometrial proliferation in PCOS may be partly related to abnormalities in SLRPs. Methods In a cross section study a total of 20 endometrial samples were collected from 10 patients with PCOS and 10 ovulatory women during their proliferative (pre-ovulatory) phase. The study subjects were matched for age, body mass index and race. The age range was 20 to 35 years. All volunteers were evaluated in reproductive endocrinology clinic, Gynecology Division, Clinics Hospital, University of São Paulo Medical School Profile and concentration of small leucine-rich proteoglycans (decorin, lumican, fibromodulin and biglycan) were determined by immunohistochemical testing and Western blotting. Results Decorin and lumican demonstrated higher immunoreactivity and relative expression in the endometrium of women with PCOS compared to that of women with regular menstrual cycles. Conclusion Our data suggests that the endometrium of PCOS women demonstrate a greater content of SLRP than controls; decorin and lumican, in particular, were found in higher concentrations in the endometrium of PCOS women during the proliferative phase. These differences may, in part, explain the excess of endometrial proliferation frequently observed in PCOS. Further studies are warranted.
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Affiliation(s)
- Ricardo Santos Simões
- Disciplina de Ginecologia, Departamento de Obstetrícia e Ginecologia, Hospital das Clínicas, Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil
| | - José Maria Soares
- Disciplina de Ginecologia, Departamento de Obstetrícia e Ginecologia, Hospital das Clínicas, Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil. .,, Av. Dr. Enéas de Carvalho Aguiar, 255 - 10o.andar - Sala 10.167 - 05403-900, São Paulo, SP, Brazil.
| | - Manuel J Simões
- Disciplina de Ginecologia, Departamento de Obstetrícia e Ginecologia, Hospital das Clínicas, Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil
| | - Helena B Nader
- Department of Molecular Biology, Federal University of São Paulo, São Paulo, Brazil
| | - Maria Cândida P Baracat
- Disciplina de Ginecologia, Departamento de Obstetrícia e Ginecologia, Hospital das Clínicas, Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil
| | - Gustavo Arantes R Maciel
- Disciplina de Ginecologia, Departamento de Obstetrícia e Ginecologia, Hospital das Clínicas, Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil
| | - Paulo C Serafini
- Disciplina de Ginecologia, Departamento de Obstetrícia e Ginecologia, Hospital das Clínicas, Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil
| | - Ricardo Azziz
- Departments of Obstetrics and Gynecology and of Medicine, Medical College of Georgia, Augusta University, Augusta, GA, USA
| | - Edmund C Baracat
- Disciplina de Ginecologia, Departamento de Obstetrícia e Ginecologia, Hospital das Clínicas, Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil
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19
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He R, Lu Y, Ren J, Wang Z, Huang J, Zhu L, Wang K. Decreased fibrous encapsulation and enhanced osseointegration in vitro by decorin-modified titanium surface. Colloids Surf B Biointerfaces 2017; 155:17-24. [DOI: 10.1016/j.colsurfb.2017.03.055] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2016] [Revised: 03/21/2017] [Accepted: 03/30/2017] [Indexed: 01/01/2023]
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20
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Moffatt P, Geng Y, Lamplugh L, Nanci A, Roughley PJ. Absence of the dermatan sulfate chain of decorin does not affect mouse development. J Negat Results Biomed 2017; 16:7. [PMID: 28412940 PMCID: PMC5393030 DOI: 10.1186/s12952-017-0074-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2016] [Accepted: 02/20/2017] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND In vitro studies suggest that the multiple functions of decorin are related to both its core protein and its dermatan sulfate chain. To determine the contribution of the dermatan sulfate chain to the functional properties of decorin in vivo, a mutant mouse whose decorin lacked a dermatan sulfate chain was generated. RESULTS Homozygous mice expressing only the decorin core protein developed and grew in a similar manner to wild type mice. In both embryonic and postnatal mice, all connective tissues studied, including cartilage, skin and cornea, appeared to be normal upon histological examination, and their collagen fibrils were of normal diameter and organization. In addition, abdominal skin wounds healed in an identical manner in the mutant and wild type mice. CONCLUSIONS The absence of a dermatan sulfate chain on decorin does not appear to overtly influence its functional properties in vivo.
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Affiliation(s)
- Pierre Moffatt
- Research Center, Shriners Hospitals for Children - Canada, 1003 Boulevard Décarie, Montréal, H4A 0A9, QC, Canada. .,Department of Human Genetics, Faculty of Medicine, McGill University, Montreal, QC, Canada.
| | - Yeqing Geng
- Research Center, Shriners Hospitals for Children - Canada, 1003 Boulevard Décarie, Montréal, H4A 0A9, QC, Canada
| | - Lisa Lamplugh
- Research Center, Shriners Hospitals for Children - Canada, 1003 Boulevard Décarie, Montréal, H4A 0A9, QC, Canada
| | - Antonio Nanci
- Laboratory for the Study of Calcified Tissues and Biomaterials, Department of Stomatology, Faculty of Dentistry, Université de Montréal, Montréal, QC, Canada
| | - Peter J Roughley
- Research Center, Shriners Hospitals for Children - Canada, 1003 Boulevard Décarie, Montréal, H4A 0A9, QC, Canada.,Department of Human Genetics, Faculty of Medicine, McGill University, Montreal, QC, Canada
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21
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Dermatan sulfate is a player in the transglutaminase 2 interaction network. PLoS One 2017; 12:e0172263. [PMID: 28199387 PMCID: PMC5310773 DOI: 10.1371/journal.pone.0172263] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2016] [Accepted: 02/02/2017] [Indexed: 11/19/2022] Open
Abstract
Transglutaminase 2 (TG2) is a multifunctional protein that is primarily engaged in cell adhesion/signaling or shows Ca2+-dependent transglutaminase activity in the extracellular space of tissues. This latter action leads to the cross-linking of the extracellular matrix (ECM) proteins. The enhanced extracellular expression of TG2 is associated with processes such as wound healing, fibrosis or vascular remodeling that are also characterized by a high deposition of dermatan sulfate (DS) proteoglycans in the ECM. However, it is unknown whether DS may bind to TG2 or affect its function. Using the plasmon surface resonance method, we showed that DS chains, especially those of biglycan, are good binding partners for TG2. The interaction has some requirements as to the DS structure. The competitive effect of heparin on DS binding to TG2 suggests that both glycosaminoglycans occupy the same binding site(s) on the protein molecule. An occurrence of the DS-TG2 interaction was confirmed by the co-immunoprecipitation of this protein with native decorin that is a DS-bearing proteoglycan rather than with the decorin core protein. Moreover, in vivo DS is responsible for both TG2 binding and the regulation of the location of this protein in the ECM as can be suggested from an increased extraction of TG2 from the human fascia only when an enzymatic degradation of the tissue DS was conducted in the presence of the anti-collagen type I antiserum. In addition, DS with a low affinity for TG2 exerted an inhibitory effect on the protein transamidating activity most probably via the control of the accessibility of a substrate. Our data show that DS can affect several aspects of TG2 biology in both physiological and pathological conditions.
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22
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Joshi NR, Miyadahira EH, Afshar Y, Jeong JW, Young SL, Lessey BA, Serafini PC, Fazleabas AT. Progesterone Resistance in Endometriosis Is Modulated by the Altered Expression of MicroRNA-29c and FKBP4. J Clin Endocrinol Metab 2017; 102:141-149. [PMID: 27778641 PMCID: PMC5413101 DOI: 10.1210/jc.2016-2076] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/09/2016] [Accepted: 10/21/2016] [Indexed: 01/21/2023]
Abstract
CONTEXT Endometriosis results in aberrant gene expression in the eutopic endometrium (EuE) and subsequent progesterone resistance. MicroRNA (miR) microarray data in a baboon model of endometriosis showed an increased expression of miR-29c. OBJECTIVES To explore the role of miR-29c in progesterone resistance in a subset of women with endometriosis. DESIGN MiR-29c expression was analyzed in the endometrium of baboons and women with or without endometriosis. The role in progesterone resistance and decidualization was analyzed by transfecting human uterine fibroblast cells with miR-29c. PATIENTS Subjects diagnosed with deep infiltrative endometriosis (DIE) by transvaginal ultrasound with bowel preparation underwent surgical excision of endometriosis. Eutopic secretory endometrium was collected pre- and postoperatively. Women with normal EuE and without DIE served as controls. RESULTS Quantitative reverse transcription polymerase chain reaction demonstrated that miR-29c expression increased, while the transcript levels of its target, FK506-binding protein 4 (FKBP4), decreased in the EuE of baboons following the induction of endometriosis. FKBP4 messenger RNA and decidual markers were statistically significantly decreased in decidualized human uterine fibroblast cells transfected with a miR-29c mimic compared with controls. Human data corroborated our baboon data and demonstrated higher expression of miR-29c in endometriosis EuE compared with normal EuE. MiR-29c was significantly decreased in endometriosis EuE postoperatively compared with preoperative tissues, and FKBP4 showed an inverse trend following radical laparoscopic resection surgery. CONCLUSIONS We demonstrate that miR-29c expression is increased in EuE of baboons and women with endometriosis, which might contribute to a compromised progesterone response by diminishing the levels of FKBP4. Resection of DIE is likely to reverse the progesterone resistance associated with endometriosis in women.
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Affiliation(s)
- Niraj R. Joshi
- Department of Obstetrics, Gynecology and Reproductive Biology, Michigan State University, Grand Rapids, Michigan 49503;
| | | | - Yalda Afshar
- Department of Obstetrics and Gynecology, University of California, Los Angeles, California 90095;
| | - Jae-Wook Jeong
- Department of Obstetrics, Gynecology and Reproductive Biology, Michigan State University, Grand Rapids, Michigan 49503;
| | - Steven L. Young
- Department of Obstetrics and Gynecology, The University of North Carolina School of Medicine, Chapel Hill, North Carolina 27599;
| | - Bruce A. Lessey
- Greenville Hospital System, University of South Carolina School of Medicine, Greenville, South Carolina 29605; and
| | - Paulo C. Serafini
- Discipline of Gynecology, Department of Obstetrics and Gynecology, Hospital das clinicas, faculdade de Medicina, Universidade de São Paulo, São Paulo 01246-903, Brazil
| | - Asgerally T. Fazleabas
- Department of Obstetrics, Gynecology and Reproductive Biology, Michigan State University, Grand Rapids, Michigan 49503;
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23
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Gubbiotti MA, Vallet SD, Ricard-Blum S, Iozzo RV. Decorin interacting network: A comprehensive analysis of decorin-binding partners and their versatile functions. Matrix Biol 2016; 55:7-21. [PMID: 27693454 DOI: 10.1016/j.matbio.2016.09.009] [Citation(s) in RCA: 154] [Impact Index Per Article: 19.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Decorin, a prototype small leucine-rich proteoglycan, regulates a vast array of cellular processes including collagen fibrillogenesis, wound repair, angiostasis, tumor growth, and autophagy. This functional versatility arises from a wide array of decorin/protein interactions also including interactions with its single glycosaminoglycan side chain. The decorin-binding partners encompass numerous categories ranging from extracellular matrix molecules to cell surface receptors to growth factors and enzymes. Despite the diversity of the decorin interacting network, two main roles emerge as prominent themes in decorin function: maintenance of cellular structure and outside-in signaling, culminating in anti-tumorigenic effects. Here we present contemporary knowledge regarding the decorin interacting network and discuss in detail the biological relevance of these pleiotropic interactions, some of which could be targeted by therapeutic interventions.
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Affiliation(s)
- Maria A Gubbiotti
- Department of Pathology, Anatomy, and Cell Biology and the Cancer Cell Biology and Signaling Program, Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, PA, United States
| | - Sylvain D Vallet
- Pericellular and Extracellular Supramolecular Assemblies, Institute of Molecular and Supramolecular Chemistry and Biochemistry, University Claude Bernard, Lyon, France
| | - Sylvie Ricard-Blum
- Pericellular and Extracellular Supramolecular Assemblies, Institute of Molecular and Supramolecular Chemistry and Biochemistry, University Claude Bernard, Lyon, France
| | - Renato V Iozzo
- Department of Pathology, Anatomy, and Cell Biology and the Cancer Cell Biology and Signaling Program, Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, PA, United States.
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Gronau T, Krüger K, Prein C, Aszodi A, Gronau I, Iozzo RV, Mooren FC, Clausen-Schaumann H, Bertrand J, Pap T, Bruckner P, Dreier R. Forced exercise-induced osteoarthritis is attenuated in mice lacking the small leucine-rich proteoglycan decorin. Ann Rheum Dis 2016; 76:442-449. [PMID: 27377816 DOI: 10.1136/annrheumdis-2016-209319] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2016] [Revised: 06/05/2016] [Accepted: 06/14/2016] [Indexed: 11/04/2022]
Abstract
OBJECTIVE Interterritorial regions of articular cartilage matrix are rich in decorin, a small leucine-rich proteoglycan and important structural protein, also involved in many signalling events. Decorin sequesters transforming growth factor β (TGFβ), thereby regulating its activity. Here, we analysed whether increased bioavailability of TGFβ in decorin-deficient (Dcn-/-) cartilage leads to changes in biomechanical properties and resistance to osteoarthritis (OA). METHODS Unchallenged knee cartilage was analysed by atomic force microscopy (AFM) and immunohistochemistry. Active transforming growth factor β-1 (TGFβ1) content within cultured chondrocyte supernatants was measured by ELISA. Quantitative real-time (RT)-PCR was used to analyse mRNA expression of glycosaminoglycan (GAG)-modifying enzymes in C28/I2 cells following TGFβ1 treatment. In addition, OA was induced in Dcn-/- and wild-type (WT) mice via forced exercise on a treadmill. RESULTS AFM analysis revealed a strikingly higher compressive stiffness in Dcn-/- than in WT cartilage. This was accompanied by increased negative charge and enhanced sulfation of GAG chains, but not by alterations in the levels of collagens or proteoglycan core proteins. In addition, decorin-deficient chondrocytes were shown to release more active TGFβ1. Increased TGFβ signalling led to enhanced Chst11 sulfotransferase expression inducing an increased negative charge density of cartilage matrix. These negative charges might attract more water resulting in augmented compressive stiffness of the tissue. Therefore, decorin-deficient mice developed significantly less OA after forced exercise than WT mice. CONCLUSIONS Our study demonstrates that the disruption of decorin-restricted TGFβ signalling leads to higher stiffness of articular cartilage matrix, rendering joints more resistant to OA. Therefore, the loss of an important structural component can improve cartilage homeostasis.
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Affiliation(s)
- Tobias Gronau
- Institute of Experimental Musculoskeletal Medicine, University Hospital Münster, Münster, Germany.,Institute of Physiological Chemistry and Pathobiochemistry, University of Münster, Münster, Germany
| | - Karsten Krüger
- Institute of Sports Medicine, Justus-Liebig University Giessen, Giessen, Germany
| | - Carina Prein
- Center for Applied Tissue Engineering and Regenerative Medicine (CANTER), Munich University of Applied Sciences and Center for Nanoscience (CeNS), Munich, Germany
| | - Attila Aszodi
- Laboratory of Experimental Surgery and Regenerative Medicine, Department of General, Trauma and Reconstruction Surgery, Ludwig-Maximilians-University, Munich, Germany
| | - Isabel Gronau
- Institute of Physiological Chemistry and Pathobiochemistry, University of Münster, Münster, Germany
| | - Renato V Iozzo
- Department of Pathology, Anatomy and Cell Biology, Thomas Jefferson University, Philadelphia, USA
| | - Frank C Mooren
- Institute of Sports Medicine, Justus-Liebig University Giessen, Giessen, Germany
| | - Hauke Clausen-Schaumann
- Center for Applied Tissue Engineering and Regenerative Medicine (CANTER), Munich University of Applied Sciences and Center for Nanoscience (CeNS), Munich, Germany
| | - Jessica Bertrand
- Institute of Experimental Musculoskeletal Medicine, University Hospital Münster, Münster, Germany.,Department of Orthopaedic Surgery, Otto-von-Guericke University, Magdeburg, Germany
| | - Thomas Pap
- Institute of Experimental Musculoskeletal Medicine, University Hospital Münster, Münster, Germany
| | - Peter Bruckner
- Institute of Physiological Chemistry and Pathobiochemistry, University of Münster, Münster, Germany
| | - Rita Dreier
- Institute of Physiological Chemistry and Pathobiochemistry, University of Münster, Münster, Germany
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Recha-Sancho L, Semino CE. Chondroitin Sulfate- and Decorin-Based Self-Assembling Scaffolds for Cartilage Tissue Engineering. PLoS One 2016; 11:e0157603. [PMID: 27315119 PMCID: PMC4912132 DOI: 10.1371/journal.pone.0157603] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2016] [Accepted: 06/01/2016] [Indexed: 12/14/2022] Open
Abstract
Cartilage injury and degenerative tissue progression remain poorly understood by the medical community. Therefore, various tissue engineering strategies aim to recover areas of damaged cartilage by using non-traditional approaches. To this end, the use of biomimetic scaffolds for recreating the complex in vivo cartilage microenvironment has become of increasing interest in the field. In the present study, we report the development of two novel biomaterials for cartilage tissue engineering (CTE) with bioactive motifs, aiming to emulate the native cartilage extracellular matrix (ECM). We employed a simple mixture of the self-assembling peptide RAD16-I with either Chondroitin Sulfate (CS) or Decorin molecules, taking advantage of the versatility of RAD16-I. After evaluating the structural stability of the bi-component scaffolds at a physiological pH, we characterized these materials using two different in vitro assessments: re-differentiation of human articular chondrocytes (AC) and induction of human adipose derived stem cells (ADSC) to a chondrogenic commitment. Interestingly, differences in cellular morphology and viability were observed between cell types and culture conditions (control and chondrogenic). In addition, both cell types underwent a chondrogenic commitment under inductive media conditions, and this did not occur under control conditions. Remarkably, the synthesis of important ECM constituents of mature cartilage, such as type II collagen and proteoglycans, was confirmed by gene and protein expression analyses and toluidine blue staining. Furthermore, the viscoelastic behavior of ADSC constructs after 4 weeks of culture was more similar to that of native articular cartilage than to that of AC constructs. Altogether, this comparative study between two cell types demonstrates the versatility of our novel biomaterials and suggests a potential 3D culture system suitable for promoting chondrogenic differentiation.
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Affiliation(s)
- Lourdes Recha-Sancho
- Tissue Engineering Laboratory, Department of Bioengineering, IQS School of Engineering, Ramon Llull University, Barcelona, Spain
| | - Carlos E. Semino
- Tissue Engineering Laboratory, Department of Bioengineering, IQS School of Engineering, Ramon Llull University, Barcelona, Spain
- * E-mail:
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26
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Zamfir AD. Applications of capillary electrophoresis electrospray ionization mass spectrometry in glycosaminoglycan analysis. Electrophoresis 2016; 37:973-86. [PMID: 26701317 DOI: 10.1002/elps.201500461] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2015] [Revised: 12/06/2015] [Accepted: 12/06/2015] [Indexed: 12/30/2022]
Abstract
Proteoglycans (PGs) represent a class of heavily glycosylated proteins distributed in the extracellular matrix, connective tissues, and on the surface of many cell types where, as functional molecules, regulate important biological processes. Structurally, PGs consist of a core protein linked to glycosaminoglycan (GAG) chains, which basically determine the properties and activities of PGs. In view of the structural complexity of GAGs and the existing correlation between this structure and PG functions, systematic efforts are invested into development of analytical methods for GAG characterization. Although less popular and of higher technical difficulty than liquid-based chromatographic methods, CE coupled with ESI MS contributed lately an important progress to glycosaminoglycomics field. In this review article, the most significant CE ESI MS and MS/MS applications in GAG research are highlighted and critically assessed. The advantages and the limitations of each concept as well as the possible further methodological refinements are also concisely discussed. Finally, the review presents the perspectives of CE ESI MS in GAG analysis along with the objectives, which still need to be reached in the near future.
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Affiliation(s)
- Alina D Zamfir
- Aurel Vlaicu University of Arad, Arad, Romania.,National Institute for Research and Development in Electrochemistry and Condensed Matter, Timisoara, Romania
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27
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Järveläinen H, Sainio A, Wight TN. Pivotal role for decorin in angiogenesis. Matrix Biol 2015; 43:15-26. [PMID: 25661523 DOI: 10.1016/j.matbio.2015.01.023] [Citation(s) in RCA: 127] [Impact Index Per Article: 14.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2015] [Revised: 01/29/2015] [Accepted: 01/29/2015] [Indexed: 01/05/2023]
Abstract
Angiogenesis, the formation of new blood vessels from preexisting vessels, is a highly complex process. It is regulated in a finely-tuned manner by numerous molecules including not only soluble growth factors such as vascular endothelial growth factor and several other growth factors, but also a diverse set of insoluble molecules, particularly collagenous and non-collagenous matrix constituents. In this review we have focused on the role and potential mechanisms of a multifunctional small leucine-rich proteoglycan decorin in angiogenesis. Depending on the cellular and molecular microenvironment where angiogenesis occurs, decorin can exhibit either a proangiogenic or an antiangiogenic activity. Nevertheless, in tumorigenesis-associated angiogenesis and in various inflammatory processes, particularly foreign body reactions and scarring, decorin exhibits an antiangiogenic activity, thus providing a potential basis for the development of decorin-based therapies in these pathological situations.
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Affiliation(s)
- Hannu Järveläinen
- Department of Medical Biochemistry and Genetics, University of Turku, Turku, Finland; Department of Medicine, Division of Endocrinology, Turku University Hospital, Turku, Finland.
| | - Annele Sainio
- Department of Medical Biochemistry and Genetics, University of Turku, Turku, Finland
| | - Thomas N Wight
- Matrix Biology Program, Benaroya Research Institute at Virginia Mason, Seattle, WA, USA
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28
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Ono YJ, Terai Y, Tanabe A, Hayashi A, Hayashi M, Yamashita Y, Kyo S, Ohmichi M. Decorin induced by progesterone plays a crucial role in suppressing endometriosis. J Endocrinol 2014; 223:203-16. [PMID: 25244916 PMCID: PMC4198121 DOI: 10.1530/joe-14-0393] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Dienogest, a synthetic progestin, has been shown to be effective against endometriosis, although it is still unclear as to how it affects the ectopic endometrial cells. Decorin has been shown to be a powerful endogenous tumor repressor acting in a paracrine fashion to limit tumor growth. Our objectives were to examine the direct effects of progesterone and dienogest on the in vitro proliferation of the human ectopic endometrial epithelial and stromal cell lines, and evaluate as to how decorin contributes to this effect. We also examined DCN mRNA expression in 50 endometriosis patients. The growth of both cell lines was inhibited in a dose-dependent manner by both decorin and dienogest. Using a chromatin immunoprecipitation assay, it was noted that progesterone and dienogest directly induced the binding of the decorin promoter in the EMOsis cc/TERT cells (immortalized human ovarian epithelial cells) and CRL-4003 cells (immortalized human endometrial stromal cells). Progesterone and dienogest also led to significant induced cell cycle arrest via decorin by promoting production of p21 in both cell lines in a dose-dependent manner. Decorin also suppressed the expression of MET in both cell lines. We confirmed that DCN mRNA expression in patients treated with dienogest was higher than that in the control group. In conclusion, decorin induced by dienogest appears to play a crucial role in suppressing endometriosis by exerting anti-proliferative effects and inducing cell cycle arrest via the production of p21 human ectopic endometrial cells and eutopic endometrial stromal cells.
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Affiliation(s)
- Yoshihiro Joshua Ono
- Department of Obstetrics and GynecologyOsaka Medical College, 2-7, Daigaku-machi, Takatsuki, Osaka 569-8686, JapanDepartment of Obstetrics and GynecologyGraduate School of Medical Science, Kanazawa University, Kanazawa, Japan
| | - Yoshito Terai
- Department of Obstetrics and GynecologyOsaka Medical College, 2-7, Daigaku-machi, Takatsuki, Osaka 569-8686, JapanDepartment of Obstetrics and GynecologyGraduate School of Medical Science, Kanazawa University, Kanazawa, Japan
| | - Akiko Tanabe
- Department of Obstetrics and GynecologyOsaka Medical College, 2-7, Daigaku-machi, Takatsuki, Osaka 569-8686, JapanDepartment of Obstetrics and GynecologyGraduate School of Medical Science, Kanazawa University, Kanazawa, Japan
| | - Atsushi Hayashi
- Department of Obstetrics and GynecologyOsaka Medical College, 2-7, Daigaku-machi, Takatsuki, Osaka 569-8686, JapanDepartment of Obstetrics and GynecologyGraduate School of Medical Science, Kanazawa University, Kanazawa, Japan
| | - Masami Hayashi
- Department of Obstetrics and GynecologyOsaka Medical College, 2-7, Daigaku-machi, Takatsuki, Osaka 569-8686, JapanDepartment of Obstetrics and GynecologyGraduate School of Medical Science, Kanazawa University, Kanazawa, Japan
| | - Yoshiki Yamashita
- Department of Obstetrics and GynecologyOsaka Medical College, 2-7, Daigaku-machi, Takatsuki, Osaka 569-8686, JapanDepartment of Obstetrics and GynecologyGraduate School of Medical Science, Kanazawa University, Kanazawa, Japan
| | - Satoru Kyo
- Department of Obstetrics and GynecologyOsaka Medical College, 2-7, Daigaku-machi, Takatsuki, Osaka 569-8686, JapanDepartment of Obstetrics and GynecologyGraduate School of Medical Science, Kanazawa University, Kanazawa, Japan
| | - Masahide Ohmichi
- Department of Obstetrics and GynecologyOsaka Medical College, 2-7, Daigaku-machi, Takatsuki, Osaka 569-8686, JapanDepartment of Obstetrics and GynecologyGraduate School of Medical Science, Kanazawa University, Kanazawa, Japan
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29
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Lorda-Diez CI, García-Porrero JA, Hurlé JM, Montero JA. Decorin gene expression in the differentiation of the skeletal connective tissues of the developing limb. Gene Expr Patterns 2014; 15:52-60. [DOI: 10.1016/j.gep.2014.04.003] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2014] [Revised: 04/09/2014] [Accepted: 04/11/2014] [Indexed: 11/28/2022]
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30
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Nikolovska K, Renke JK, Jungmann O, Grobe K, Iozzo RV, Zamfir AD, Seidler DG. A decorin-deficient matrix affects skin chondroitin/dermatan sulfate levels and keratinocyte function. Matrix Biol 2014; 35:91-102. [PMID: 24447999 DOI: 10.1016/j.matbio.2014.01.003] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2013] [Revised: 12/11/2013] [Accepted: 01/05/2014] [Indexed: 01/06/2023]
Abstract
Decorin is a small leucine-rich proteoglycan harboring a single glycosaminoglycan chain, which, in skin, is mainly composed of dermatan sulfate (DS). Mutant mice with targeted disruption of the decorin gene (Dcn(-/-)) exhibit an abnormal collagen architecture in the dermis and reduced tensile strength, collectively leading to a skin fragility phenotype. Notably, Ehlers-Danlos patients with mutations in enzymes involved in the biosynthesis of DS display a similar phenotype, and recent studies indicate that DS is involved in growth factor binding and signaling. To determine the impact of the loss of DS-decorin in the dermis, we analyzed the glycosaminoglycan content of Dcn(-/-) and wild-type mouse skin. The total amount of chondroitin/dermatan sulfate (CS/DS) was increased in the Dcn(-/-) skin, but was overall less sulfated with a significant reduction in bisulfated ΔDiS2,X (X=4 or 6) disaccharide units, due to the reduced expression of uronyl 2-O sulfotransferase (Ust). With increasing age, sulfation declined; however, Dcn(-/-) CS/DS was constantly undersulfated vis-à-vis wild-type. Functionally, we found altered fibroblast growth factor (Fgf)-7 and -2 binding due to changes in the micro-heterogeneity of skin Dcn(-/-) CS/DS. To better delineate the role of decorin, we used a 3D Dcn(-/-) fibroblast cell culture model. We found that the CS/DS extracts of wild-type and Dcn(-/-) fibroblasts were similar to the skin sugars, and this correlated with the lack of uronyl 2-O sulfotransferase in the Dcn(-/-) fibroblasts. Moreover, Ffg7 binding to total CS/DS was attenuated in the Dcn(-/-) samples. Surprisingly, wild-type CS/DS significantly reduced the binding of Fgf7 to keratinocytes in a concentration dependent manner unlike the Dcn(-/-) CS/DS that only affected the binding at higher concentrations. Although binding to cell-surfaces was quite similar at higher concentrations, keratinocyte proliferation was differentially affected. Higher concentration of Dcn(-/-) CS/DS induced proliferation in contrast to wild-type CS/DS. 3D co-cultures of fibroblasts and keratinocytes showed that, unlike Dcn(-/-) CS/DS, wild-type CS/DS promoted differentiation of keratinocytes. Collectively, our results provide novel mechanistic explanations for the reported defects in wound healing in Dcn(-/-) mice and possibly Ehlers-Danlos patients. Moreover, the lack of decorin-derived DS and an altered CS/DS composition differentially influence keratinocyte behavior.
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Affiliation(s)
- Katerina Nikolovska
- Insitute of Physiological Chemistry and Pathobiochemistry, Waldeyerstr. 15, University Hospital Münster, University of Münster, D-48149 Münster, Germany
| | - Jana K Renke
- Insitute of Physiological Chemistry and Pathobiochemistry, Waldeyerstr. 15, University Hospital Münster, University of Münster, D-48149 Münster, Germany
| | - Oliver Jungmann
- Insitute of Physiological Chemistry and Pathobiochemistry, Waldeyerstr. 15, University Hospital Münster, University of Münster, D-48149 Münster, Germany
| | - Kay Grobe
- Insitute of Physiological Chemistry and Pathobiochemistry, Waldeyerstr. 15, University Hospital Münster, University of Münster, D-48149 Münster, Germany
| | - Renato V Iozzo
- Department of Pathology, Anatomy and Cell Biology, and the Cancer Cell Biology and Signaling Program, Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, PA, 19107, USA
| | - Alina D Zamfir
- Department of Chemical and Biological Sciences, "Aurel Vlaicu" University of Arad, Romania and Mass Spectrometry Laboratory, National Institute for Research and Development in Electrochemistry and Condensed Matter, Timisoara, Romania
| | - Daniela G Seidler
- Insitute of Physiological Chemistry and Pathobiochemistry, Waldeyerstr. 15, University Hospital Münster, University of Münster, D-48149 Münster, Germany.
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31
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Horváth Z, Kovalszky I, Fullár A, Kiss K, Schaff Z, Iozzo RV, Baghy K. Decorin deficiency promotes hepatic carcinogenesis. Matrix Biol 2013; 35:194-205. [PMID: 24361483 DOI: 10.1016/j.matbio.2013.11.004] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2013] [Revised: 11/26/2013] [Accepted: 11/26/2013] [Indexed: 12/16/2022]
Abstract
Hepatocellular carcinoma represents one of the most-rapidly spreading cancers in the world. In the majority of cases, an inflammation-driven fibrosis or cirrhosis precedes the development of the tumor. During malignant transformation, the tumor microenvironment undergoes qualitative and quantitative changes that modulate the behavior of the malignant cells. A key constituent for the hepatic microenvironment is the small leucine-rich proteoglycan decorin, known to interfere with cellular events of tumorigenesis mainly by blocking various receptor tyrosine kinases (RTK) such as EGFR, Met, IGF-IR, PDGFR and VEGFR2. In this study, we characterized cell signaling events evoked by decorin deficiency in two experimental models of hepatocarcinogenesis using thioacetamide or diethyl nitrosamine as carcinogens. Genetic ablation of decorin led to enhanced tumor occurrence as compared to wild-type animals. These findings correlated with decreased levels of the cyclin-dependent kinase inhibitor p21(WAF1/CIP1) and a concurrent elevation in retinoblastoma protein phosphorylation via cyclin dependent kinase 4. Decreased steady state p21(Waf1/Cip1) levels correlated with enhanced expression of transcription factor AP4, a known transcriptional repressor of p21(Waf1/Cip1), and enhanced c-Myc protein levels. In addition, translocation of β-catenin was a typical event in diethyl nitrosamine-evoked tumors. In parallel, decreased phosphorylation of both c-Myc and β-catenin was observed in Dcn(-/-) livers likely due to the hindered GSK3β-mediated targeting of these proteins to proteasomal degradation. We discovered that in a genetic background lacking decorin, four RTKs were constitutively activated (phosphorylated), including three known targets of decorin such as PDGFRα, EGFR, IGF-IR, and a novel RTK MSPR/RON. Our findings provide powerful genetic evidence for a crucial in vivo role of decorin during hepatocarcinogenesis as lack of decorin in the liver and hepatic stroma facilitates experimental carcinogenesis by providing an environment devoid of this potent pan-RTK inhibitor. Thus, our results support future utilization of decorin as an antitumor agent in liver cancer.
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Affiliation(s)
- Zsolt Horváth
- 1st Department of Pathology and Experimental Cancer Research, Semmelweis University, Budapest, Hungary
| | - Ilona Kovalszky
- 1st Department of Pathology and Experimental Cancer Research, Semmelweis University, Budapest, Hungary
| | - Alexandra Fullár
- 1st Department of Pathology and Experimental Cancer Research, Semmelweis University, Budapest, Hungary
| | - Katalin Kiss
- 1st Department of Pathology and Experimental Cancer Research, Semmelweis University, Budapest, Hungary
| | - Zsuzsa Schaff
- 2nd Department of Pathology, Semmelweis University, Budapest, Hungary
| | - Renato V Iozzo
- Department of Pathology, Anatomy, and Cell Biology, and the Cancer Cell Biology and Signaling Program, Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, PA, USA
| | - Kornélia Baghy
- 1st Department of Pathology and Experimental Cancer Research, Semmelweis University, Budapest, Hungary.
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Dynamics of connective-tissue localization during chronic Borrelia burgdorferi infection. J Transl Med 2013; 93:900-10. [PMID: 23797360 PMCID: PMC4139070 DOI: 10.1038/labinvest.2013.81] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2013] [Revised: 05/28/2013] [Accepted: 05/29/2013] [Indexed: 12/21/2022] Open
Abstract
The etiologic agent of Lyme disease, Borrelia burgdorferi, localizes preferentially in the extracellular matrix during persistence. In chronically infected laboratory mice, there is a direct association between B. burgdorferi and the proteoglycan decorin, which suggests that decorin has a role in defining protective niches for persistent spirochetes. In this study, the tissue colocalization of B. burgdorferi with decorin and the dynamics of borrelial decorin tropism were evaluated during chronic infection. Spirochetes were found to colocalize absolutely with decorin, but not collagen I in chronically infected immunocompetent C3H mice. Passive immunization of infected C3H-scid mice with B. burgdorferi-specific immune serum resulted in the localization of spirochetes in decorin-rich microenvironments, with clearance of spirochetes from decorin-poor microenvironments. In passively immunized C3H-scid mice, tissue spirochete burdens were initially reduced, but increased over time as the B. burgdorferi-specific antibody levels waned. Concurrent repopulation of the previously cleared decorin-poor microenvironments was observed with the rising tissue spirochete burden and declining antibody titer. These findings indicate that the specificity of B. burgdorferi tissue localization during chronic infection is determined by decorin, driven by the borrelia-specific antibody response, and fluctuates with the antibody response.
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33
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Baghy K, Horváth Z, Regős E, Kiss K, Schaff Z, Iozzo RV, Kovalszky I. Decorin interferes with platelet-derived growth factor receptor signaling in experimental hepatocarcinogenesis. FEBS J 2013; 280:2150-64. [PMID: 23448253 DOI: 10.1111/febs.12215] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2012] [Revised: 02/14/2013] [Accepted: 02/20/2013] [Indexed: 12/18/2022]
Abstract
Decorin, a secreted small leucine-rich proteoglycan, acts as a tumor repressor in a variety of cancers, mainly by blocking the action of several receptor tyrosine kinases such as the receptors for hepatocyte, epidermal and insulin-like growth factors. In the present study we investigated the effects of decorin in an experimental model of thioacetamide-induced hepatocarcinogenesis and its potential role in modulating the signaling of platelet-derived growth factor receptor-α (PDGFRα). Genetic ablation of decorin in mice led to enhanced tumor prevalence and a higher tumor count compared with wild-type mice. These findings correlated with decreased levels of the cyclin-dependent kinase inhibitor p21(Waf1/Cip1) and concurrent activation (phosphorylation) of PDGFRα in the hepatocellular carcinomas generated in the decorin-null vis-à-vis wild-type mice. Notably, in normal liver PDGFRα localized primarily to the membrane of nonparenchymal cells, whereas in the malignant counterpart PDGFRα was expressed by the malignant cells at their cell surfaces. This process was facilitated by a genetic background lacking endogenous decorin. Double immunostaining of the proteoglycan and the receptor revealed only minor colocalization, leading to the hypothesis that decorin would bind to the natural ligand PDGF rather than to the receptor itself. Indeed, we found, using purified proteins and immune-blot assays, that decorin binds to PDGF. Collectively, our findings support the idea that decorin acts as a secreted tumor repressor during hepatocarcinogenesis by hindering the action of another receptor tyrosine kinase, such as the PDGFRα, and could be a novel therapeutic agent in the battle against liver cancer.
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Affiliation(s)
- Kornélia Baghy
- 1st Department of Pathology and Experimental Cancer Research, Semmelweis University, Budapest, Hungary
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Bocian C, Urbanowitz AK, Owens RT, Iozzo RV, Götte M, Seidler DG. Decorin potentiates interferon-γ activity in a model of allergic inflammation. J Biol Chem 2013; 288:12699-711. [PMID: 23460644 DOI: 10.1074/jbc.m112.419366] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
The proteoglycan decorin modulates leukocyte recruitment during delayed-type hypersensitivity responses. Decorin-deficient (Dcn(-/-)) mice show reduced edema formation during the first 24 h with a concurrent attenuated recruitment of CD8(+) leukocytes in the inflamed Dcn(-/-) ears. The aim of this study was to elucidate the molecular pathways affected by the loss of decorin. In vivo, reduced numbers of CD8(+) cells in Dcn(-/-) ears correlated with a reduced interferon-γ (Ifn-γ) and CXCL-10 expression. In vitro, Dcn(-/-) lymphocytes displayed an increased adhesion to brain microvascular (bEnd.3) endothelial cells. Decorin treatment of bEnd.3 increased Icam1 and down-regulated Vcam1 expression after TNF-α stimulation. However, Dcn(-/-) and wild-type lymphocytes produced IFN-γ after activation with CD3ε. Upon incubation with decorin, endothelial cells and fibroblasts responded differently to IFN-γ and TNF-α; CCL2 in bEnd.3 cells was more prominently up-regulated by TNF-α compared with IFN-γ. Notably, both factors were more potent in the presence of decorin. Compared with TNF-α, IFN-γ treatment induced significantly more CXCL-10, and both factors increased synthesis of CXCL-10 in the presence of decorin. The response to IFN-γ was similar in Dcn(-/-) and wild-type fibroblasts, an additional source of CXCL-10. However, addition of decorin yielded significantly more CXCL-10. Notably, decorin increased the stability of IFN-γ in vitro and potentiated IFN-γ-induced activation of STAT-1. Furthermore, only dermatan sulfate influenced IFN-γ signaling by significantly increasing CXCL-10 expression in contrast to decorin protein core alone. Our data demonstrate that decorin modulates delayed-type hypersensitivity responses by augmenting the induction of downstream effector cytokines of IFN-γ and TNF-α, thereby influencing the recruitment of CD8(+) lymphocytes into the inflamed tissue.
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Affiliation(s)
- Carla Bocian
- Institute of Physiological Chemistry and Pathobiochemistry, Waldeyerstrasse 15, 48149 Münster, Germany
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35
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Zhao X, Yang B, Solakyildirim K, Solakylidirim K, Joo EJ, Toida T, Higashi K, Linhardt RJ, Li L. Sequence analysis and domain motifs in the porcine skin decorin glycosaminoglycan chain. J Biol Chem 2013; 288:9226-37. [PMID: 23423381 DOI: 10.1074/jbc.m112.437236] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Decorin proteoglycan is comprised of a core protein containing a single O-linked dermatan sulfate/chondroitin sulfate glycosaminoglycan (GAG) chain. Although the sequence of the decorin core protein is determined by the gene encoding its structure, the structure of its GAG chain is determined in the Golgi. The recent application of modern MS to bikunin, a far simpler chondroitin sulfate proteoglycans, suggests that it has a single or small number of defined sequences. On this basis, a similar approach to sequence the decorin of porcine skin much larger and more structurally complex dermatan sulfate/chondroitin sulfate GAG chain was undertaken. This approach resulted in information on the consistency/variability of its linkage region at the reducing end of the GAG chain, its iduronic acid-rich domain, glucuronic acid-rich domain, and non-reducing end. A general motif for the porcine skin decorin GAG chain was established. A single small decorin GAG chain was sequenced using MS/MS analysis. The data obtained in the study suggest that the decorin GAG chain has a small or a limited number of sequences.
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Affiliation(s)
- Xue Zhao
- College of Food Science and Technology, Ocean University of China, Qingdao 266003, China
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Müller SA, van der Smissen A, von Feilitzsch M, Anderegg U, Kalkhof S, von Bergen M. Quantitative proteomics reveals altered expression of extracellular matrix related proteins of human primary dermal fibroblasts in response to sulfated hyaluronan and collagen applied as artificial extracellular matrix. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2012; 23:3053-3065. [PMID: 22990618 PMCID: PMC3506194 DOI: 10.1007/s10856-012-4760-x] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/31/2012] [Accepted: 08/27/2012] [Indexed: 06/01/2023]
Abstract
Fibroblasts are the main matrix producing cells of the dermis and are also strongly regulated by their matrix environment which can be used to improve and guide skin wound healing processes. Here, we systematically investigated the molecular effects on primary dermal fibroblasts in response to high-sulfated hyaluronan [HA] (hsHA) by quantitative proteomics. The comparison of non- and high-sulfated HA revealed regulation of 84 of more than 1,200 quantified proteins. Based on gene enrichment we found that sulfation of HA alters extracellular matrix remodeling. The collagen degrading enzymes cathepsin K, matrix metalloproteinases-2 and -14 were found to be down-regulated on hsHA. Additionally protein expression of thrombospondin-1, decorin, collagen types I and XII were reduced, whereas the expression of trophoblast glycoprotein and collagen type VI were slightly increased. This study demonstrates that global proteomics provides a valuable tool for revealing proteins involved in molecular effects of growth substrates for further material optimization.
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Affiliation(s)
- Stephan A. Müller
- Department of Proteomics, UFZ, Helmholtz-Centre for Environmental Research Leipzig, 04318 Leipzig, Germany
- Collaborative Research Center (SFB-TR67), Matrixengineering, Leipzig, Germany
| | - Anja van der Smissen
- Department of Dermatology Venerology and Allergology, Leipzig University, 04103 Leipzig, Germany
- Collaborative Research Center (SFB-TR67), Matrixengineering, Leipzig, Germany
| | - Margarete von Feilitzsch
- Department of Dermatology Venerology and Allergology, Leipzig University, 04103 Leipzig, Germany
- Collaborative Research Center (SFB-TR67), Matrixengineering, Leipzig, Germany
| | - Ulf Anderegg
- Department of Dermatology Venerology and Allergology, Leipzig University, 04103 Leipzig, Germany
- Collaborative Research Center (SFB-TR67), Matrixengineering, Leipzig, Germany
| | - Stefan Kalkhof
- Department of Proteomics, UFZ, Helmholtz-Centre for Environmental Research Leipzig, 04318 Leipzig, Germany
- Collaborative Research Center (SFB-TR67), Matrixengineering, Leipzig, Germany
| | - Martin von Bergen
- Department of Proteomics, UFZ, Helmholtz-Centre for Environmental Research Leipzig, 04318 Leipzig, Germany
- Department of Metabolomics, UFZ, Helmholtz-Centre for Environmental Research Leipzig, 04318 Leipzig, Germany
- Collaborative Research Center (SFB-TR67), Matrixengineering, Leipzig, Germany
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Kwon SJ, Lee KB, Solakyildirim K, Masuko S, Ly M, Zhang F, Li L, Dordick JS, Linhardt RJ. Signal amplification by glyco-qPCR for ultrasensitive detection of carbohydrates: applications in glycobiology. Angew Chem Int Ed Engl 2012; 51:11800-4. [PMID: 23073897 PMCID: PMC3544480 DOI: 10.1002/anie.201205112] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2012] [Revised: 09/04/2012] [Indexed: 11/12/2022]
Abstract
Tiny amounts of carbohydrates (ca. 1 zmol) can be detected quantitatively by a real-time method based on the conjugation of carbohydrates with DNA markers (see picture). The proposed method (glyco-qPCR) provides uniform, ultrasensitive detection of carbohydrates, which can be applied to glycobiology, as well as carbohydrate-based drug discovery.
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Affiliation(s)
- Seok Joon Kwon
- Department of Chemistry and Chemical Biology, Department of Chemical and Biological Engineering, Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, NY 12180 (USA)
| | - Kyung Bok Lee
- Department of Biochemistry, College of Medicine, Konyang University, Daejeon 302-718 (Republic of Korea)
| | - Kemal Solakyildirim
- Department of Chemistry and Chemical Biology, Department of Chemical and Biological Engineering, Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, NY 12180 (USA)
| | - Sayaka Masuko
- Department of Chemistry and Chemical Biology, Department of Chemical and Biological Engineering, Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, NY 12180 (USA)
| | - Mellisa Ly
- Department of Chemistry and Chemical Biology, Department of Chemical and Biological Engineering, Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, NY 12180 (USA)
| | - Fuming Zhang
- Department of Chemistry and Chemical Biology, Department of Chemical and Biological Engineering, Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, NY 12180 (USA)
| | - Lingyun Li
- Department of Chemistry and Chemical Biology, Department of Chemical and Biological Engineering, Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, NY 12180 (USA)
| | - Jonathan S. Dordick
- Department of Chemistry and Chemical Biology, Department of Chemical and Biological Engineering, Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, NY 12180 (USA)
| | - Robert J. Linhardt
- Department of Chemistry and Chemical Biology, Department of Chemical and Biological Engineering, Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, NY 12180 (USA)
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Kwon SJ, Lee KB, Solakyildirim K, Masuko S, Ly M, Zhang F, Li L, Dordick JS, Linhardt RJ. Signal Amplification by Glyco-qPCR for Ultrasensitive Detection of Carbohydrates: Applications in Glycobiology. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201205112] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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Boström P, Sainio A, Kakko T, Savontaus M, Söderström M, Järveläinen H. Localization of decorin gene expression in normal human breast tissue and in benign and malignant tumors of the human breast. Histochem Cell Biol 2012; 139:161-71. [PMID: 23007289 PMCID: PMC3535407 DOI: 10.1007/s00418-012-1026-0] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/28/2012] [Indexed: 12/17/2022]
Abstract
The small extracellular matrix proteoglycan decorin which possesses a potent antitumor activity has been shown to be present in various amounts in the stroma of several tumors including those of the breast. Regarding decorin in breast malignancies the published data are conflicting, i.e., whether breast cancer cells express it or not. Here, we first compared decorin gene expression levels between healthy human breast tissue and selected types of human breast cancer using GeneSapiens databank. Next, we localized decorin mRNA in tissue specimen of normal human breast, intraductal breast papillomas and various histologic types of human breast cancer using in situ hybridization (ISH) with digoxigenin-labeled RNA probes for decorin. We also examined the effect of decorin transduction on the behavior of cultured human breast cancer MCF7 cells. Analysis of GeneSapiens databank revealed that in various human breast cancers decorin expression is significant. However, ISH results clearly demonstrated that human breast cancer cells independently of the type of the cancer do not express decorin mRNA. This was also true for papilloma-forming cells of the human breast. Indeed, decorin gene expression in healthy human breast tissue as well as in benign and malignant tumors of human breast was shown to take place solely in cells of the original stroma. Decorin transduction using decorin adenoviral vector in decorin-negative MCF7 cells resulted in a significant decrease in the proliferation of these cells and changed cell cohesion. Decorin-transduced MCF7 cells also exhibited increased apoptosis. In conclusion, our study shows that in human breast tissue only cells of the original stroma are capable of decorin gene expression. Our study also shows that transduction of decorin in decorin-negative human breast cancer cells markedly modulates the growth pattern of these cells.
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Affiliation(s)
- Pia Boström
- Department of Pathology, Turku University Hospital, University of Turku, Kiinamyllynkatu 4-8, 20520 Turku, Finland
| | - Annele Sainio
- Department of Medical Biochemistry and Genetics, University of Turku, Kiinamyllynkatu 10, 20520 Turku, Finland
| | - Tanja Kakko
- Department of Medical Biochemistry and Genetics, University of Turku, Kiinamyllynkatu 10, 20520 Turku, Finland
| | - Mikko Savontaus
- Department of Medicine, Turku University Hospital, Kiinamyllynkatu 4-8, 20520 Turku, Finland
| | - Mirva Söderström
- Department of Pathology, Turku University Hospital, University of Turku, Kiinamyllynkatu 4-8, 20520 Turku, Finland
| | - Hannu Järveläinen
- Department of Medical Biochemistry and Genetics, University of Turku, Kiinamyllynkatu 10, 20520 Turku, Finland
- Department of Medicine, Turku University Hospital, Kiinamyllynkatu 4-8, 20520 Turku, Finland
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YE YAPING, HU WEIHUA, GUO FENGJING, ZHANG WEIKAI, WANG JIANG, CHEN ANMIN. Glycosaminoglycan chains of biglycan promote bone morphogenetic protein-4-induced osteoblast differentiation. Int J Mol Med 2012; 30:1075-80. [DOI: 10.3892/ijmm.2012.1091] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2012] [Accepted: 07/02/2012] [Indexed: 11/06/2022] Open
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Waehre A, Vistnes M, Sjaastad I, Nygård S, Husberg C, Lunde IG, Aukrust P, Yndestad A, Vinge LE, Behmen D, Neukamm C, Brun H, Thaulow E, Christensen G. Chemokines regulate small leucine-rich proteoglycans in the extracellular matrix of the pressure-overloaded right ventricle. J Appl Physiol (1985) 2012; 112:1372-82. [DOI: 10.1152/japplphysiol.01350.2011] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
Chemokines have been suggested to play a role during development of left ventricular failure, but little is known about their role during right ventricular (RV) remodeling and dysfunction. We have previously shown that the chemokine (C-X-C motif) ligand 13 (CXCL13) regulates small leucine-rich proteoglycans (SLRPs). We hypothesized that chemokines are upregulated in the pressure-overloaded RV, and that they regulate SLRPs. Mice with RV pressure overload following pulmonary banding (PB) had a significant increase in RV weight and an increase in liver weight after 1 wk. Microarray analysis (Affymetrix) of RV tissue from mice with PB revealed that CXCL10, CXCL6, chemokine (C-X3-C motif) ligand 1 (CX3CL1), chemokine (C-C motif) ligand 5 (CCL5), CXCL16, and CCL2 were the most upregulated chemokines. Stimulation of cardiac fibroblasts with these same chemokines showed that CXCL16 increased the expression of the four SLRPs: decorin, lumican, biglycan, and fibromodulin. CCL5 increased the same SLRPs, except decorin, whereas CX3CL1 increased the expression of decorin and lumican. CXCL16, CX3CL1, and CCL5 were also shown to increase the levels of glycosylated decorin and lumican in the medium after stimulation of fibroblasts. In the pressure-overloaded RV tissue, Western blotting revealed an increase in the total protein level of lumican and a glycosylated form of decorin with a higher molecular weight compared with control mice. Both mice with PB and patients with pulmonary stenosis had significantly increased circulating levels of CXCL16 compared with healthy controls measured by enzyme immunoassay. In conclusion, we have found that chemokines are upregulated in the pressure-overloaded RV and that CXCL16, CX3CL1, and CCL5 regulate expression and posttranslational modifications of SLRPs in cardiac fibroblasts. In the pressure-overloaded RV, protein levels of lumican were increased, and a glycosylated form of decorin with a high molecular weight appeared.
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Affiliation(s)
- Anne Waehre
- Institute for Experimental Medical Research, Oslo University Hospital and University of Oslo,
- KG Jebsen Cardiac Research Center and Center for Heart Failure Research, University of Oslo,
| | - Maria Vistnes
- Institute for Experimental Medical Research, Oslo University Hospital and University of Oslo,
- KG Jebsen Cardiac Research Center and Center for Heart Failure Research, University of Oslo,
| | - Ivar Sjaastad
- Institute for Experimental Medical Research, Oslo University Hospital and University of Oslo,
- KG Jebsen Cardiac Research Center and Center for Heart Failure Research, University of Oslo,
- Department of Cardiology, Oslo University Hospital Ullevål,
| | - Ståle Nygård
- Institute for Experimental Medical Research, Oslo University Hospital and University of Oslo,
- KG Jebsen Cardiac Research Center and Center for Heart Failure Research, University of Oslo,
- Bioinformatics Core Facility, Institute for Medical Informatics,
| | - Cathrine Husberg
- Institute for Experimental Medical Research, Oslo University Hospital and University of Oslo,
- KG Jebsen Cardiac Research Center and Center for Heart Failure Research, University of Oslo,
| | - Ida Gjervold Lunde
- Institute for Experimental Medical Research, Oslo University Hospital and University of Oslo,
- KG Jebsen Cardiac Research Center and Center for Heart Failure Research, University of Oslo,
| | - Pål Aukrust
- Research Institute for Internal Medicine,
- Section of Clinical Immunology and Infectious Diseases, and
| | - Arne Yndestad
- KG Jebsen Cardiac Research Center and Center for Heart Failure Research, University of Oslo,
- Research Institute for Internal Medicine,
| | - Leif E. Vinge
- KG Jebsen Cardiac Research Center and Center for Heart Failure Research, University of Oslo,
- Research Institute for Internal Medicine,
- Departments of 7Cardiology and
| | - Dina Behmen
- Institute for Experimental Medical Research, Oslo University Hospital and University of Oslo,
- KG Jebsen Cardiac Research Center and Center for Heart Failure Research, University of Oslo,
| | - Christian Neukamm
- Pediatric Cardiology, Oslo University Hospital Rikshospitalet, Oslo, Norway
| | - Henrik Brun
- Pediatric Cardiology, Oslo University Hospital Rikshospitalet, Oslo, Norway
| | - Erik Thaulow
- Pediatric Cardiology, Oslo University Hospital Rikshospitalet, Oslo, Norway
| | - Geir Christensen
- Institute for Experimental Medical Research, Oslo University Hospital and University of Oslo,
- KG Jebsen Cardiac Research Center and Center for Heart Failure Research, University of Oslo,
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Le Jan S, Hayashi M, Kasza Z, Eriksson I, Bishop JR, Weibrecht I, Heldin J, Holmborn K, Jakobsson L, Söderberg O, Spillmann D, Esko JD, Claesson-Welsh L, Kjellén L, Kreuger J. Functional overlap between chondroitin and heparan sulfate proteoglycans during VEGF-induced sprouting angiogenesis. Arterioscler Thromb Vasc Biol 2012; 32:1255-63. [PMID: 22345168 DOI: 10.1161/atvbaha.111.240622] [Citation(s) in RCA: 55] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
OBJECTIVE Heparan sulfate proteoglycans regulate key steps of blood vessel formation. The present study was undertaken to investigate if there is a functional overlap between heparan sulfate proteoglycans and chondroitin sulfate proteoglycans during sprouting angiogenesis. METHODS AND RESULTS Using cultures of genetically engineered mouse embryonic stem cells, we show that angiogenic sprouting occurs also in the absence of heparan sulfate biosynthesis. Cells unable to produce heparan sulfate instead increase their production of chondroitin sulfate that binds key angiogenic growth factors such as vascular endothelial growth factor A, transforming growth factor β, and platelet-derived growth factor B. Lack of heparan sulfate proteoglycan production however leads to increased pericyte numbers and reduced adhesion of pericytes to nascent sprouts, likely due to dysregulation of transforming growth factor β and platelet-derived growth factor B signal transduction. CONCLUSIONS The present study provides direct evidence for a previously undefined functional overlap between chondroitin sulfate proteoglycans and heparan sulfate proteoglycans during sprouting angiogenesis. Our findings provide information relevant for potential future drug design efforts that involve targeting of proteoglycans in the vasculature.
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Affiliation(s)
- Sébastien Le Jan
- Rudbeck Laboratory, Department of Medical Biochemistry and Microbiology, Uppsala University, Uppsala, Sweden
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Tingbø MG, Pedersen ME, Kolset SO, Enersen G, Hannesson KO. Lumican is a major small leucine-rich proteoglycan (SLRP) in Atlantic cod (Gadus morhua L.) skeletal muscle. Glycoconj J 2011; 29:13-23. [PMID: 22124673 DOI: 10.1007/s10719-011-9358-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2011] [Revised: 09/29/2011] [Accepted: 10/17/2011] [Indexed: 01/07/2023]
Abstract
Knowledge on fish matrix biology is important to ensure optimal fish -quality, -growth and -health in aquaculture. The aquaculture industry face major challenges related to matrix biology, such as inflammations and malformations. Atlantic cod skeletal muscle was investigated for collagen I, decorin, biglycan, and lumican expression and distribution by real-time PCR, immunohistochemical staining and Western blotting. Immunohistochemical staining and Western immunoblotting were also performed using antibodies against glycosaminoglycan side chains of these proteoglycans, in addition to fibromodulin. Real-time PCR showed highest mRNA expression of lumican and collagen I. Collagen I and proteoglycan immunohistochemical staining revealed distinct thread-like structures in the myocommata, with the exception of fibromodulin, which stained in dense structures embedded in the myocommata. Chondroitinase AC-generated epitopes stained more limited than cABC-generated epitopes, indicating a stronger presence of dermatan sulfate than chondroitin sulfate in cod muscle. Lumican and keratan sulfate distribution patterns were strong and ubiquitous in endomysia and myocommata. Western blots revealed similar SLRPs sizes in cod as are known from mammals. Staining of chondroitin/dermatan sulfate epitopes in Western blots were similar in molecular size to those of decorin and biglycan, whereas staining of keratan sulfate epitopes coincided with expected molecular sizes of lumican and fibromodulin. In conclusion, lumican was a major proteoglycan in cod muscle with ubiquitous distribution overlapping with keratan sulfate. Other leucine-rich proteoglycans were also present in cod muscle, and Western blot using antibodies developed for mammalian species showed cross reactivity with fish, demonstrating similar structures and molecular weights as in mammals.
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Affiliation(s)
- Monica G Tingbø
- The Norwegian Institute of Food, Fisheries and Aquaculture Research, Nofima AS, Ås, Norway.
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Abstract
Atherosclerotic cardiovascular disease is a major cause of morbidity and mortality in the Western world. Despite tremendous strides in understandings its pathogenesis, it still remains a challenge because of gaps in our understanding of its initiation, progression and complications leading to the clinical syndromes of angina, acute coronary syndrome, cerebrovascular disease and peripheral vascular disease. Recent studies have provided impetus on the shift from models of atherosclerosis based on cellular interactions to models where the important role of extracellular matrix is recognized. Proteoglycans, especially those belonging to the small leucine-rich proteoglycan family of which decorin is a representative example, have come under close scrutiny for their role in atherogenesis. There is evidence from in vitro and in vivo animal models as well as humans to suggest an important role of decorin in attenuating progression of atherosclerosis. Decorin distribution in different blood vessels has been shown to inversely correlate with the tendency to develop atherosclerosis. Decorin seems to interact closely with different cellular components of the plaque milieu, thereby suggesting its role in influencing atherogenesis at different steps. Here we review the current understanding of the role of decorin in the pathogenesis of atherosclerosis.
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Affiliation(s)
- Sandeep Singla
- Division of Cardiovascular Medicine, University of Arkansas for Medical Sciences, 4301 West Markham Street, Little Rock, AR 72205, USA.
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Sánchez-Solana B, Laborda J, Baladrón V. Mouse resistin modulates adipogenesis and glucose uptake in 3T3-L1 preadipocytes through the ROR1 receptor. Mol Endocrinol 2011; 26:110-27. [PMID: 22074948 DOI: 10.1210/me.2011-1027] [Citation(s) in RCA: 92] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Mouse resistin, a cysteine-rich protein primarily secreted from mature adipocytes, is involved in insulin resistance and type 2 diabetes. Human resistin, however, is mainly secreted by immune mononuclear cells, and it competes with lipopolysaccharide for the binding to Toll-like receptor 4, which could mediate some of the well-known proinflammatory effects of resistin in humans. In addition, resistin has been involved in the regulation of many cell differentiation and proliferation processes, suggesting that different receptors could be involved in mediating its numerous effects. Thus, a recent work identifies an isoform of Decorin (Δ Decorin) as a functional resistin receptor in adipocyte progenitors that may regulate white adipose tissue expansion. Our work shows that the mouse receptor tyrosine kinase-like orphan receptor (ROR)1 could mediate some of the described functions of resistin in 3T3-L1 adipogenesis and glucose uptake. We have demonstrated an interaction of mouse resistin with specific domains of the extracellular region of the ROR1 receptor. This interaction results in the inhibition of ROR1 phosphorylation, modulates ERK1/2 phosphorylation, and regulates suppressor of cytokine signaling 3, glucose transporter 4, and glucose transporter 1 expression. Moreover, mouse resistin modulates glucose uptake and promotes adipogenesis of 3T3-L1 cells through ROR1. In summary, our results identify mouse resistin as a potential inhibitory ligand for the receptor ROR1 and demonstrate, for the first time, that ROR1 plays an important role in adipogenesis and glucose homeostasis in 3T3-L1 cells. These data open a new line of research that could explain important questions about the resistin mechanism of action in adipogenesis and in the development of insulin resistance.
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Affiliation(s)
- Beatriz Sánchez-Solana
- Laboratory of Biochemistry and Molecular Biology, Department of Inorganic and Organic Chemistry and Biochemistry, Medical School/Regional Center for Biomedical Research, University of Castilla-La Mancha, 02006 Albacete, Spain
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Seidler DG, Mohamed NA, Bocian C, Stadtmann A, Hermann S, Schäfers K, Schäfers M, Iozzo RV, Zarbock A, Götte M. The role for decorin in delayed-type hypersensitivity. THE JOURNAL OF IMMUNOLOGY 2011; 187:6108-19. [PMID: 22043007 DOI: 10.4049/jimmunol.1100373] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Decorin, a small leucine-rich proteoglycan, regulates extracellular matrix organization, growth factor-mediated signaling, and cell growth. Because decorin may directly modulate immune responses, we investigated its role in a mouse model of contact allergy (oxazolone-mediated delayed-type hypersensitivity [DTH]) in decorin-deficient (Dcn(-/-)) and wild-type mice. Dcn(-/-) mice showed a reduced ear swelling 24 h after oxazolone treatment with a concurrent attenuation of leukocyte infiltration. These findings were corroborated by reduced glucose metabolism, as determined by (18)fluordeoxyglucose uptake in positron emission tomography scans. Unexpectedly, polymorphonuclear leukocyte numbers in Dcn(-/-) blood vessels were significantly increased and accompanied by large numbers of flattened leukocytes adherent to the endothelium. Intravital microscopy and flow chamber and static adhesion assays confirmed increased adhesion and reduced transmigration of Dcn(-/-) leukocytes. Circulating blood neutrophil numbers were significantly increased in Dcn(-/-) mice 24 h after DTH elicitation, but they were only moderately increased in wild-type mice. Expression of the proinflammatory cytokine TNF-α was reduced, whereas syndecan-1 and ICAM-1 were overexpressed in inflamed ears of Dcn(-/-) mice, indicating that these adhesion molecules could be responsible for increased leukocyte adhesion. Decorin treatment of endothelial cells increased tyrosine phosphorylation and reduced syndecan-1 expression. Notably, absence of syndecan-1 in a genetic background lacking decorin rescued the attenuated DTH phenotype of Dcn(-/-) mice. Collectively, these results implicated a role for decorin in mediating DTH responses by influencing polymorphonuclear leukocyte attachment to the endothelium. This occurs via two nonmutually exclusive mechanisms that involve a direct antiadhesive effect on polymorphonuclear leukocytes and a negative regulation of ICAM-1 and syndecan-1 expression.
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Affiliation(s)
- Daniela G Seidler
- Institute of Physiological Chemistry and Pathobiochemistry, D-48149 Münster, Germany.
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Antonara S, Ristow L, Coburn J. Adhesion mechanisms of Borrelia burgdorferi. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2011; 715:35-49. [PMID: 21557056 DOI: 10.1007/978-94-007-0940-9_3] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
The Borrelia are widely distributed agents of Lyme disease and Relapsing Fever. All are vector-borne zoonotic pathogens, have segmented genomes, and enigmatic mechanisms of pathogenesis. Adhesion to mammalian and tick substrates is one pathogenic mechanism that has been widely studied. At this point, the primary focus of research in this area has been on Borrelia burgdorferi, one agent of Lyme disease, but many of the adhesins of B. burgdorferi are conserved in other Lyme disease agents, and some are conserved in the Relapsing Fever Borrelia. B. burgdorferi adhesins that mediate attachment to cell-surface molecules may influence the host response to the bacteria, while adhesins that mediate attachment to soluble proteins or extracellular matrix components may cloak the bacterial surface from recognition by the host immune system as well as facilitate colonization of tissues. While targeted mutations in the genes encoding some adhesins have been shown to affect the infectivity and pathogenicity of B. burgdorferi, much work remains to be done to understand the roles of the adhesins in promoting the persistent infection required to maintain the bacteria in reservoir hosts.
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Affiliation(s)
- Styliani Antonara
- Department of Molecular Biology and Microbiology, Tufts University School of Medicine, Boston, MA, USA.
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Adam M, Schwarzer J, Köhn F, Strauss L, Poutanen M, Mayerhofer A. Mast cell tryptase stimulates production of decorin by human testicular peritubular cells: possible role of decorin in male infertility by interfering with growth factor signaling. Hum Reprod 2011; 26:2613-25. [DOI: 10.1093/humrep/der245] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Khan GA, Girish GV, Lala N, Di Guglielmo GM, Lala PK. Decorin is a novel VEGFR-2-binding antagonist for the human extravillous trophoblast. Mol Endocrinol 2011; 25:1431-43. [PMID: 21659473 DOI: 10.1210/me.2010-0426] [Citation(s) in RCA: 107] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
Extravillous trophoblasts (EVT) of the human placenta invade the uterine decidua and its arteries to ensure successful placentation. We previously identified two decidua-derived molecules, TGF-β and a TGF-β-binding proteoglycan decorin (DCN), as negative regulators of EVT proliferation, migration, and invasiveness and reported that DCN acts via multiple tyrosine kinase receptors [epidermal growth factor-receptor (EGF-R), IGF receptor-1 (IGFR1), and vascular endothelial growth factor 2 receptor (VEGFR-2)]. Because binding of DCN to VEGFR-2 has never been reported earlier, present study explored this binding, the approximate location of VEGFR-2-binding site in DCN, and its functional role in our human first trimester EVT cell line HTR-8/SVneo. Based on far-Western blotting and coimmunoprecipitation studies, we report that DCN binds both native (EVT expressed) and recombinant VEGFR-2 and that this binding is abrogated with a VEGFR-2 blocking antibody, indicating an overlap between the ligand-binding and the DCN-binding domains of VEGFR-2. We determined that (125)I-labeled VEGF-E (a VEGFR-2 specific ligand) binds EVT with a dissociation constant (K(d)) of 566 pM, and DCN displaced this binding with an inhibition constant (K(i)) of 3.93-5.78 nM, indicating a 7- to 10-fold lower affinity of DCN for VEGFR-2. DCN peptide fragments derived from the leucine rich repeat 5 domain that blocked DCN-VEGFR-2 interactions or VEGF-E binding in EVT cells also blocked VEGF-A- and VEGF-E-induced EVT cell proliferation and migration, indicative of functional VEGFR-2-binding sites of DCN. Finally, DCN inhibited VEGF-E-induced EVT migration by interfering with ERK1/2 activation. Our findings reveal a novel role of DCN as an antagonistic ligand for VEGFR-2, having implications for pathophysiology of preeclampsia, a trophoblast hypoinvasive disorder in pregnancy, and explain its antiangiogenic function.
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Affiliation(s)
- Gausal A Khan
- Department of Anatomy & Cell Biology, Schulich School of Medicine and Dentistry, University of Western Ontario, London, Ontario, Canada
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Abstract
The structure of the GAG (glycosaminoglycan) chain of recombinantly expressed decorin proteoglycan was examined using a combination of intact-chain analysis and domain compositional analysis. The GAG had a number-average molecular mass of 22 kDa as determined by PAGE. NMR spectroscopic analysis using two-dimensional correlation spectroscopy indicated that the ratio of glucuronic acid to iduronic acid in decorin peptidoglycan was 5 to 1. GAG domains terminated with a specific disaccharide obtained by enzymatic degradation of decorin GAG with highly specific endolytic and exolytic lyases were analysed by PAGE and further depolymerized with the enzymes. The disaccharide compositional profiles of the resulting domains were obtained using LC with mass spectrometric and photometric detection and compared with that of the polysaccharide. The information obtained through the disaccharide compositional profiling was combined with the NMR and PAGE data to construct a map of the decorin GAG sequence motifs.
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