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Sakatoku S, Hayashi Y, Futenma T, Sugita Y, Ishizaka R, Nawa H, Iohara K. Periostin Is a Candidate Regulator of the Host Microenvironment in Regeneration of Pulp and Dentin Complex and Periodontal Ligament in Transplantation with Stem Cell-Conditioned Medium. Stem Cells Int 2024; 2024:7685280. [PMID: 38435089 PMCID: PMC10907099 DOI: 10.1155/2024/7685280] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2022] [Revised: 11/21/2023] [Accepted: 11/24/2023] [Indexed: 03/05/2024] Open
Abstract
Purpose The microenvironment is required for tissues to maintain their properties in vivo. This microenvironment encompasses the types and three-dimensional arrangement of cells forming the tissues, and their interactions with neighboring cells and extracellular matrices, as represented by the stem cell niche. Tissue regeneration depends not on the original tissue source of the transplanted cells, but on the microenvironment in which they are transplanted. We have previously reported pulp regeneration in a heterotopic root graft model by transplantation of conditioned medium alone, which suggests that host-derived cells expressing receptors for migration factors in conditioned medium migrate into the root canal and cause pulp regeneration. Regenerative medicine is needed to restore the original function of complex tissues. To achieve this, it is necessary to reproduce the changes in the microenvironment of the host tissue that accompany the regenerative response. Therefore, it is important to reproduce the microenvironment in vivo for further development of tissue regeneration therapy. Periostin is also found in the epithelial-mesenchymal junction, with expression sites that differ depending on the mineralized matrix stage, and is involved in regulation of calcification. Methods We investigate whether periostin contributes to microenvironmental changes in regenerated pulp tissue. Dental pulp stem cells were induced into dentin, and gene expression of DSPP, nestin, DMP1, Runx2, and periostin was analyzed by qPCR and protein expression by IHC. Similarly, gene expression was analyzed using qPCR and protein expression using IHC in regenerated dental pulp obtained by ectopic transplantation. Results Since these regenerated tissues were observable on the same slice, it was possible to understand changes in the microenvironment within the tissues. Conclusions Periostin promoted proliferation of pulp stem cells, migration in type I collagen, and calcification in regenerated pulp, which strongly suggests that periostin is a promising candidate as a factor that contributes to the microenvironment of regenerated pulp.
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Affiliation(s)
- Shintarou Sakatoku
- Department of Pediatric Dentistry, School of Dentistry, Aichi-Gakuin University, Suemoridouri 2-11, Chikusa-ku, Nagoya 464-8651, Aichi, Japan
| | - Yuki Hayashi
- Department of Pediatric Dentistry, School of Dentistry, Aichi-Gakuin University, Suemoridouri 2-11, Chikusa-ku, Nagoya 464-8651, Aichi, Japan
| | - Taku Futenma
- Department of Pediatric Dentistry, School of Dentistry, Aichi-Gakuin University, Suemoridouri 2-11, Chikusa-ku, Nagoya 464-8651, Aichi, Japan
| | - Yoshihiko Sugita
- Department of Oral Pathology and Forensic Odontology, School of Dentistry, Aichi Gakuin University, 1-1-100 Kusumoto-cho, Chikusa-ku, Nagoya 464-8650, Aichi, Japan
| | - Ryo Ishizaka
- Department of Pediatric Dentistry, School of Dentistry, Aichi-Gakuin University, Suemoridouri 2-11, Chikusa-ku, Nagoya 464-8651, Aichi, Japan
| | - Hiroyuki Nawa
- Department of Pediatric Dentistry, School of Dentistry, Aichi-Gakuin University, Suemoridouri 2-11, Chikusa-ku, Nagoya 464-8651, Aichi, Japan
| | - Koichiro Iohara
- Department of Dental Regenerative Medicine, Center of Advanced Medicine for Dental and Oral Diseases, National Center for Geriatrics and Gerontology, Research Institute, Morioka 7-430, Obu 474-8511, Aichi, Japan
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Yan J, Wang Z, Xian L, Wang D, Chen Y, Bai J, Liu HJ. Periostin Promotes the Proliferation, Differentiation and Mineralization of Osteoblasts from Ovariectomized Rats. Horm Metab Res 2024. [PMID: 38307091 DOI: 10.1055/a-2238-2553] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2024]
Abstract
Perimenopausal period causes a significant amount of bone loss, which results in primary osteoporosis (OP). The Periostin (Postn) may play important roles in the pathogenesis of OP after ovariectomized (OVX) rats. To identify the roles of Postn in the bone marrow mesenchymal stem cell derived osteoblasts (BMSC-OB) in OVX rats, we investigated the expression of Wnt/β-catenin signaling pathways in BMSC-OB and the effects of Postn on bone formation by development of BMSC-OB cultures. Twenty-four female Sprague-Dawley rats at 6 months were randomized into 3 groups: sham-operated (SHAM) group, OVX group and OVX+Postn group. The rats were killed after 3 months, and their bilateral femora and tibiae were collected for BMSC-OB culture, Micro-CT Analysis, Bone Histomorphometric Measurement, Transmission Electron Microscopy and Immunohistochemistry Staining. The dose/time-dependent effects of Postn on the proliferation, differentiation and mineralization of BMSC-OB and the expression of osteoblastic markers were measured in in vitro experiments. We found increased Postn increased bone mass, promoted bone formation of trabeculae, Wnt signaling and the osteogenic activity in osteoblasts in sublesional femur. Postn have the function to enhance cell proliferation, differentiation and mineralization at a proper concentration and incubation time. Interestingly, in BMSC-OB from OVX rats treated with the different dose of Postn, the osteoblastic markers expression and Wnt/β-catenin signaling pathways were significantly promoted. The direct effect of Postn may lead to inhibit excessive bone resorption and increase bone formation through the Wnt/β-catenin signaling pathways after OVX. Postn may play a very important role in the pathogenesis of OP after OVX.
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Affiliation(s)
- Jun Yan
- Department of Orthopaedic Surgery, Liaocheng People's Hospital, Liaocheng City, China
| | - Zidong Wang
- Department of Orthopaedic Surgery, Liaocheng People's Hospital, Liaocheng City, China
| | - Li Xian
- School of Clinical Medicine, Weifang Medical University, Weifang, China
| | - Dawei Wang
- Department of Orthopaedic Surgery, Liaocheng People's Hospital, Liaocheng City, China
| | - Yunzhen Chen
- Department of Spine, Qilu Hospital of Shandong University, Jinan, China
| | - Jie Bai
- Department of Endocrinology, Liaocheng People's Hospital, Liaocheng City, China
| | - Hai-Juan Liu
- Department of Endocrinology, Liaocheng People's Hospital, Liaocheng City, China
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The role of osteoprotegerin (OPG) in fibrosis: its potential as a biomarker and/or biological target for the treatment of fibrotic diseases. Pharmacol Ther 2021; 228:107941. [PMID: 34171336 DOI: 10.1016/j.pharmthera.2021.107941] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2020] [Accepted: 05/28/2021] [Indexed: 02/06/2023]
Abstract
Fibrosis is defined by excessive formation and accumulation of extracellular matrix proteins, produced by myofibroblasts, that supersedes normal wound healing responses to injury and results in progressive architectural remodelling. Fibrosis is often detected in advanced disease stages when an organ is already severely damaged and can no longer function properly. Therefore, there is an urgent need for reliable and easily detectable markers to identify and monitor fibrosis onset and progression as early as possible; this will greatly facilitate the development of novel therapeutic strategies. Osteoprotegerin (OPG), a well-known regulator of bone extracellular matrix and most studied for its role in regulating bone mass, is expressed in various organs and functions as a decoy for receptor activator of nuclear factor kappa-B ligand (RANKL) and tumor necrosis factor-related apoptosis-inducing ligand (TRAIL). Recently, OPG has been linked to fibrosis and fibrogenesis, and has been included in a panel of markers to diagnose liver fibrosis. Multiple studies now suggest that OPG may be a general biomarker suitable for detection of fibrosis and/or monitoring the impact of fibrosis treatment. This review summarizes our current understanding of the role of OPG in fibrosis and will discuss its potential as a biomarker and/or novel therapeutic target for fibrosis.
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Ghezzi B, Parisi L, Vurro F, Alfieri I, Toffoli A, Meglioli M, Mozzoni B, Ghiacci G, Macaluso GM. Tetracalcium phosphate and biphasic tetracalcium phosphate/tricalcium phosphate powders' effects evaluation on human osteoblasts. ACTA ACUST UNITED AC 2020; 69:87-94. [PMID: 32181607 DOI: 10.23736/s0026-4970.20.04272-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
BACKGROUND Calcium ions levels in bone niches have been demonstrated to severely influence new bone formation. Osteoinductive scaffolds containing calcium have been largely studied to control the release of calcium in bone regeneration and tissue engineering purpose. The aim of the present study was, firstly, to synthesize two different resorbable calcium phosphate-based powders, thought to be reservoirs of calcium ions, and secondary, to investigate their effects on human osteoblasts, in order to develop a suitable titanium coating material. METHODS Tetracalcium phosphate (A450) and biphasic tetracalcium phosphatae/tricalcium phosphate (A850) powders were prepared with an innovative method. The presence of calcium phosphate structures was chemically confirmed with XRD. Furthermore, powders macroscopic aspect was observed with a stereomicroscope. For in-vitro experiments, human osteoblastic cells were cultured in the presence of A450 and A850, and assayed for viability and metabolic activity through Crystal Violet and MTT, respectively. RESULTS Our synthesis led to the formation of calcium phosphates in both samples, even though A850 presented a higher level of crystallinity and a more powdery aspects than A450. Both the samples enhanced the viability of cultured cells, inhibiting cell metabolic activity in the case of A850, which furthermore showed to be internalized by cells. CONCLUSIONS We developed two different kind of calcium phosphate-based powders and we tested their effect on human osteoblasts, underlying the possibility of use calcium phosphate-based coatings to enhance cell response on implantable materials.
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Affiliation(s)
- Benedetta Ghezzi
- Department of Medicine and Surgery, University Center of Dentistry, University of Parma, Parma, Italy
| | - Ludovica Parisi
- Department of Medicine and Surgery, University Center of Dentistry, University of Parma, Parma, Italy - .,Laboratory for Molecular Biology, Department of Orthodontics and Dentofacial Orthopedics, School of Dental Medicine, University of Bern, Bern, Switzerland
| | - Filippo Vurro
- Istituto dei Materiali per l'Elettronica e il Magnetisimo (IMEM-CNR), Parma, Italy
| | - Ilaria Alfieri
- Department of Chemical Sciences, Life and Environmental Sustainability, University of Parma, Parma, Italy
| | - Andrea Toffoli
- Department of Medicine and Surgery, University Center of Dentistry, University of Parma, Parma, Italy
| | - Matteo Meglioli
- Department of Medicine and Surgery, University Center of Dentistry, University of Parma, Parma, Italy
| | - Beatrice Mozzoni
- Department of Medicine and Surgery, University Center of Dentistry, University of Parma, Parma, Italy
| | - Giulia Ghiacci
- Department of Medicine and Surgery, University Center of Dentistry, University of Parma, Parma, Italy
| | - Guido M Macaluso
- Department of Medicine and Surgery, University Center of Dentistry, University of Parma, Parma, Italy.,Istituto dei Materiali per l'Elettronica e il Magnetisimo (IMEM-CNR), Parma, Italy
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Liu Q, Huang P, Guo SJ. [Progress relationship between periostin and periodontitis]. HUA XI KOU QIANG YI XUE ZA ZHI = HUAXI KOUQIANG YIXUE ZAZHI = WEST CHINA JOURNAL OF STOMATOLOGY 2018; 36:681-685. [PMID: 30593118 DOI: 10.7518/hxkq.2018.06.019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Periostin, a kind of matricellular protein highly expressed in periodontal ligament and periosteum, is an important regulator of the integrity of periodontal ligament and periodontitis processes. Periostin has been shown to play a positive role in the recovery of periodontitis. This paper reviews relevant literature about the role of periostin in periodontal tissue and periodontitis.
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Affiliation(s)
- Qian Liu
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases & Dept. of Periodontics, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
| | - Ping Huang
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases & Dept. of Periodontics, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
| | - Shu-Juan Guo
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases & Dept. of Periodontics, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
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Wu Z, Dai W, Wang P, Zhang X, Tang Y, Liu L, Wang Q, Li M, Tang C. Periostin promotes migration, proliferation, and differentiation of human periodontal ligament mesenchymal stem cells. Connect Tissue Res 2018; 59:108-119. [PMID: 28301220 DOI: 10.1080/03008207.2017.1306060] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
OVERVIEW Periostin (POSTN) is critical to bone and dental tissue morphogenesis, postnatal development, and maintenance; however, its roles in tissue repair and regeneration mediated by human periodontal ligament mesenchymal stem cells (PDLSCs) remain unclear. The present study was designed to evaluate the effects of POSTN on hPDLSCs in vitro. MATERIALS AND METHODS hPDLSCs were isolated and characterized by their expression of the cell surface markers CD44, CD90, CD105, CD34, and CD45. Next, 100 ng/mL recombinant human POSTN protein (rhPOSTN) was used to stimulate the hPDLSCs. Lentiviral POSTN shRNA was used to knockdown POSTN. The cell counting kit-8 (CCK8) and scratch assay were used to analyze cell proliferation and migration, respectively. Osteogenic differentiation was investigated using an alkaline phosphatase (ALP) activity assay, alizarin staining, and quantitative calcium analysis and related genes/protein expression assays. RESULTS Isolated hPDLSCs were positive for CD44, CD90, and CD105 and negative for CD34 and CD45. In addition, 100 ng/mL rhPOSTN significantly accelerated scratch closure, and POSTN-knockdown cells presented slower closure at 24 h and 48 h. Furthermore, the integrin inhibitor Cilengitide depressed the scratch closure that was enhanced by POSTN at 24 h. The CCK8 assay showed that 100 ng/mL rhPOSTN promoted hPDLSC proliferation. Moreover, 100 ng/mL rhPOSTN increased the expression of RUNX2, OSX, OPN, OCN, and VEGF and enhanced ALP activity and mineralization. POSTN silencing decreased the expression of RUNX2, OSX, OPN, OCN, and VEGF and inhibited ALP activity and mineralization. CONCLUSIONS POSTN accelerated the migration, proliferation, and osteogenic differentiation of hPDLSCs.
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Affiliation(s)
- Ziqiang Wu
- a Jiangsu Key Laboratory of Oral Diseases, Nanjing Medical University , Nanjing , China.,b Department of Implantology , the Affiliated Stomatological Hospital of Nanjing Medical University , Nanjing , China
| | - Wenyong Dai
- a Jiangsu Key Laboratory of Oral Diseases, Nanjing Medical University , Nanjing , China.,b Department of Implantology , the Affiliated Stomatological Hospital of Nanjing Medical University , Nanjing , China
| | - Pei Wang
- a Jiangsu Key Laboratory of Oral Diseases, Nanjing Medical University , Nanjing , China.,b Department of Implantology , the Affiliated Stomatological Hospital of Nanjing Medical University , Nanjing , China
| | - Xiaozhen Zhang
- a Jiangsu Key Laboratory of Oral Diseases, Nanjing Medical University , Nanjing , China.,b Department of Implantology , the Affiliated Stomatological Hospital of Nanjing Medical University , Nanjing , China
| | - Yi Tang
- a Jiangsu Key Laboratory of Oral Diseases, Nanjing Medical University , Nanjing , China.,b Department of Implantology , the Affiliated Stomatological Hospital of Nanjing Medical University , Nanjing , China
| | - Lin Liu
- a Jiangsu Key Laboratory of Oral Diseases, Nanjing Medical University , Nanjing , China.,b Department of Implantology , the Affiliated Stomatological Hospital of Nanjing Medical University , Nanjing , China
| | - Qiaona Wang
- a Jiangsu Key Laboratory of Oral Diseases, Nanjing Medical University , Nanjing , China.,b Department of Implantology , the Affiliated Stomatological Hospital of Nanjing Medical University , Nanjing , China
| | - Ming Li
- a Jiangsu Key Laboratory of Oral Diseases, Nanjing Medical University , Nanjing , China.,b Department of Implantology , the Affiliated Stomatological Hospital of Nanjing Medical University , Nanjing , China
| | - Chunbo Tang
- a Jiangsu Key Laboratory of Oral Diseases, Nanjing Medical University , Nanjing , China.,b Department of Implantology , the Affiliated Stomatological Hospital of Nanjing Medical University , Nanjing , China
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Characterization of Cellular and Molecular Heterogeneity of Bone Marrow Stromal Cells. Stem Cells Int 2016; 2016:9378081. [PMID: 27610142 PMCID: PMC5004045 DOI: 10.1155/2016/9378081] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2016] [Accepted: 05/26/2016] [Indexed: 01/04/2023] Open
Abstract
Human bone marrow-derived stromal stem cells (hBMSC) exhibit multiple functions, including differentiation into skeletal cells (progenitor function), hematopoiesis support, and immune regulation (nonprogenitor function). We have previously demonstrated the presence of morphological and functional heterogeneity of hBMSC cultures. In the present study, we characterized in detail two hTERT-BMSC clonal cell populations termed here CL1 and CL2 that represent an opposing phenotype with respect to morphology, markers expression: alkaline phosphatase (ALP) and CD146, and ex vivo differentiation potential. CL1 differentiated readily to osteoblasts, adipocytes, and chondrocytes as shown by expression of lineage specific genes and proteins. Whole genome transcriptome profiling of CL1 versus CL2 revealed enrichment in CL1 of bone-, mineralization-, and skeletal muscle-related genes, for example, ALP, POSTN, IGFBP5 BMP4, and CXCL12. On the other hand, CL2 transcriptome was enriched in immune modulatory genes, for example, CD14, CD99, NOTCH3, CXCL6, CFB, and CFI. Furthermore, gene expression microarray analysis of osteoblast differentiated CL1 versus CL2 showed significant upregulation in CL1 of bone development and osteoblast differentiation genes which included several homeobox genes: TBX15, HOXA2 and HOXA10, and IGF1, FGFR3, BMP6, MCAM, ITGA10, IGFBP5, and ALP. siRNA-based downregulation of the ALP gene in CL1 impaired osteoblastic and adipocytic differentiation. Our studies demonstrate the existence of molecular and functional heterogeneity in cultured hBMSC. ALP can be employed to identify osteoblastic and adipocytic progenitor cells in the heterogeneous hBMSC cultures.
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Zhang F, Zhang Z, Sun D, Dong S, Xu J, Dai F. Periostin: A Downstream Mediator of EphB4-Induced Osteogenic Differentiation of Human Bone Marrow-Derived Mesenchymal Stem Cells. Stem Cells Int 2016; 2016:7241829. [PMID: 26788070 PMCID: PMC4695675 DOI: 10.1155/2016/7241829] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2015] [Revised: 08/05/2015] [Accepted: 08/24/2015] [Indexed: 01/06/2023] Open
Abstract
Erythropoietin-producing hepatocyte B4 (EphB4) has been reported to be a key molecular switch in the regulation of bone homeostasis, but the underlying mechanism remains poorly understood. In this study, we investigated the role of EphB4 in regulating the expression of periostin (POSTN) within bone marrow-derived mesenchymal stem cells (MSCs) and assessed its effect and molecular mechanism of osteogenic induction in vitro. Treatment with ephrinB2-FC significantly increased the expression of POSTN in MSCs, and the inhibition of EphB4 could abrogate this effect. In addition, osteogenic markers were upregulated especially in MSCs overexpressing EphB4. To elucidate the underlying mechanism of cross talk between EphB4 and the Wnt pathway, we detected the change in protein expression of phosphorylated-glycogen synthase kinase 3β-serine 9 (p-GSK-3β-Ser9) and β-catenin, as well as the osteogenic markers Runx2 and COL1. The results showed that GSK-3β activation and osteogenic marker expression levels were downregulated by ephrinB2-FC treatment, but these effects were inhibited by blocking integrin αvβ3 in MSCs. Our findings demonstrate that EphB4 can promote osteogenic differentiation of MSCs via upregulation of POSTN expression. It not only helps to reveal the interaction mechanism between EphB4 and Wnt pathway but also brings a better understanding of EphB4/ephrinB2 signaling in bone homeostasis.
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Affiliation(s)
- Fei Zhang
- National & Regional United Engineering Laboratory of Tissue Engineering, Third Military Medical University, Chongqing 400038, China
- Department of Orthopaedics, Southwest Hospital, Third Military Medical University, Chongqing 400038, China
| | - Zehua Zhang
- National & Regional United Engineering Laboratory of Tissue Engineering, Third Military Medical University, Chongqing 400038, China
- Department of Orthopaedics, Southwest Hospital, Third Military Medical University, Chongqing 400038, China
| | - Dong Sun
- National & Regional United Engineering Laboratory of Tissue Engineering, Third Military Medical University, Chongqing 400038, China
- Department of Orthopaedics, Southwest Hospital, Third Military Medical University, Chongqing 400038, China
| | - Shiwu Dong
- National & Regional United Engineering Laboratory of Tissue Engineering, Third Military Medical University, Chongqing 400038, China
- Department of Biomedical Materials Science, School of Biomedical Engineering, Third Military Medical University, Chongqing 400038, China
| | - Jianzhong Xu
- National & Regional United Engineering Laboratory of Tissue Engineering, Third Military Medical University, Chongqing 400038, China
- Department of Orthopaedics, Southwest Hospital, Third Military Medical University, Chongqing 400038, China
- *Jianzhong Xu: and
| | - Fei Dai
- National & Regional United Engineering Laboratory of Tissue Engineering, Third Military Medical University, Chongqing 400038, China
- Department of Orthopaedics, Southwest Hospital, Third Military Medical University, Chongqing 400038, China
- *Fei Dai:
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SLM produced porous titanium implant improvements for enhanced vascularization and osteoblast seeding. Int J Mol Sci 2015; 16:7478-92. [PMID: 25849656 PMCID: PMC4425029 DOI: 10.3390/ijms16047478] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2015] [Revised: 03/20/2015] [Accepted: 03/30/2015] [Indexed: 01/06/2023] Open
Abstract
To improve well-known titanium implants, pores can be used for increasing bone formation and close bone-implant interface. Selective Laser Melting (SLM) enables the production of any geometry and was used for implant production with 250-µm pore size. The used pore size supports vessel ingrowth, as bone formation is strongly dependent on fast vascularization. Additionally, proangiogenic factors promote implant vascularization. To functionalize the titanium with proangiogenic factors, polycaprolactone (PCL) coating can be used. The following proangiogenic factors were examined: vascular endothelial growth factor (VEGF), high mobility group box 1 (HMGB1) and chemokine (C-X-C motif) ligand 12 (CXCL12). As different surfaces lead to different cell reactions, titanium and PCL coating were compared. The growing into the porous titanium structure of primary osteoblasts was examined by cross sections. Primary osteoblasts seeded on the different surfaces were compared using Live Cell Imaging (LCI). Cross sections showed cells had proliferated, but not migrated after seven days. Although the cell count was lower on titanium PCL implants in LCI, the cell count and cell spreading area development showed promising results for titanium PCL implants. HMGB1 showed the highest migration capacity for stimulating the endothelial cell line. Future perspective would be the incorporation of HMGB1 into PCL polymer for the realization of a slow factor release.
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Murphy-Ullrich JE, Sage EH. Revisiting the matricellular concept. Matrix Biol 2014; 37:1-14. [PMID: 25064829 PMCID: PMC4379989 DOI: 10.1016/j.matbio.2014.07.005] [Citation(s) in RCA: 282] [Impact Index Per Article: 28.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2014] [Revised: 07/07/2014] [Accepted: 07/08/2014] [Indexed: 12/16/2022]
Abstract
The concept of a matricellular protein was first proposed by Paul Bornstein in the mid-1990s to account for the non-lethal phenotypes of mice with inactivated genes encoding thrombospondin-1, tenascin-C, or SPARC. It was also recognized that these extracellular matrix proteins were primarily counter or de-adhesive. This review reappraises the matricellular concept after nearly two decades of continuous investigation. The expanded matricellular family as well as the diverse and often unexpected functions, cellular location, and interacting partners/receptors of matricellular proteins are considered. Development of therapeutic strategies that target matricellular proteins are discussed in the context of pathology and regenerative medicine.
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Affiliation(s)
- Joanne E Murphy-Ullrich
- Department of Pathology, University of Alabama at Birmingham, Birmingham, AL 35294-0019, United States.
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