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Kraisuriyawong P, Kornsuthisopon C, Pavasant P, Rattanapisit K, Phoolcharoen W, Hoven VP. Functionalizable bacterial cellulose composite membrane for guided tissue regeneration. Int J Biol Macromol 2024; 268:131655. [PMID: 38636763 DOI: 10.1016/j.ijbiomac.2024.131655] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2023] [Revised: 04/07/2024] [Accepted: 04/15/2024] [Indexed: 04/20/2024]
Abstract
This research aims to develop guided tissue regeneration (GTR) membranes from bacterial cellulose (BC), a natural polysaccharide-based biopolymer. A double-layered BC composite membrane was prepared by coating the BC membrane with mixed carboxymethyl cellulose/poly(ethylene oxide) (CMC/PEO) fibers via electrospinning. The CMC/PEO-BC membranes were then characterized for their chemical and physical characteristics. The 8 % (wt/v) CMC/PEO (1:1) aqueous solution yielded well-defined electrospun CMC/PEO nanofibers (125 ± 10 nm) without beads. The CMC/PEO-BC membranes exhibited good mechanical and swelling properties as well as good cytocompatibility against human periodontal ligament cells (hPDLs). Its functionalizability via carboxyl entities in CMC was tested using the calcium-binding domain of plant-derived recombinant human osteopontin (p-rhOPN-C122). As evaluated by enzyme-linked immunosorbent assay, a 98-99 % immobilization efficiency was achieved in a concentration-dependent manner over an applied p-rhOPN-C122 concentration range of 7.5-30 ng/mL. The biological function of the membrane was assessed by determining the expression levels of osteogenic-related gene transcripts using quantitative real-time reverse-transcriptase polymerase chain reaction. Mineralization assay indicated that the p-rhOPN-C122 immobilized CMC/PEO-BC membrane promoted hPDLs osteogenic differentiation. These results suggested that the developed membrane could serve as a promising GTR membrane for application in bone tissue regeneration.
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Affiliation(s)
- Puthon Kraisuriyawong
- Department of Chemistry, Faculty of Science, Chulalongkorn University, Phayathai Road, Pathumwan, Bangkok 10330, Thailand
| | - Chatvadee Kornsuthisopon
- Stem Cell Biology Research Unit, Faculty of Dentistry, Chulalongkorn University, Bangkok 10330, Thailand
| | - Prasit Pavasant
- Center of Excellence for Regenerative Dentistry, Department of Anatomy, Faculty of Dentistry, Chulalongkorn University, Phayathai Road, Pathumwan, Bangkok 10330, Thailand
| | - Kaewta Rattanapisit
- Research Unit for Plant-Produced Pharmaceuticals, Chulalongkorn University, Phayathai Road, Pathumwan, Bangkok 10330, Thailand
| | - Waranyoo Phoolcharoen
- Research Unit for Plant-Produced Pharmaceuticals, Chulalongkorn University, Phayathai Road, Pathumwan, Bangkok 10330, Thailand; Department of Pharmacognosy and Pharmaceutical Botany, Faculty of Pharmaceutical Sciences, Chulalongkorn University, Phayathai Road, Pathumwan, Bangkok 10330, Thailand
| | - Voravee P Hoven
- Department of Chemistry, Faculty of Science, Chulalongkorn University, Phayathai Road, Pathumwan, Bangkok 10330, Thailand; Center of Excellence in Materials and Biointerfaces, Chulalongkorn University, Phayathai Road, Pathumwan, Bangkok 10330, Thailand; Center of Excellence on Petrochemical and Materials Technology, Chulalongkorn University, Phayathai Road, Pathumwan, Bangkok 10330, Thailand.
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Isler SC, Bellon B, Foss M, Pippenger B, Stavropoulos A, Andersen OZ. Assessing the osseointegration potential of a strontium releasing nanostructured titanium oxide surface: A biomechanical study in the rabbit tibia plateau model. Clin Exp Dent Res 2024; 10:e812. [PMID: 38044566 PMCID: PMC10860460 DOI: 10.1002/cre2.812] [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: 08/12/2023] [Revised: 10/19/2023] [Accepted: 10/26/2023] [Indexed: 12/05/2023] Open
Abstract
OBJECTIVES To investigate the impact of a Ti-Sr-O technology, applied to either a turned surface or an SLA surface, on the mechanical robustness of osseointegration, benchmarked against the SLActive surface. MATERIAL AND METHODS Ti discs (6.25-mm-diameter and 2-mm-thick) with three different surfaces were inserted on the proximal-anterior part of the tibial plateau of adult Swedish loop rabbits: (I) turned surface modified with Ti-Sr-O (turned + Ti-Sr-O), (II) SLA surface modified with Ti-Sr-O (SLA + Ti-Sr-O), and (III) SLActive surface (SLActive). Following a healing period of 2 weeks and 4 weeks, the pull-out (PO) force needed to detach the discs from the bone was assessed, as a surrogate of osseointegration. RESULTS The SLActive surface exhibited statistically significant higher median PO forces, compared with the SLA + Ti-Sr-O surfaces at both 2- and 4 weeks post-op (p > .05). In this study, no single turned + Ti-Sr-O surface disk was integrated. CONCLUSIONS The tested Ti-Sr-O technology failed to enhance osseointegration; however, this finding may be related to the inappropriateness of the rabbit tibia plateau model for assessing third-generation implant surface technologies, due to the limited diffusion and clearance at the disk-bone interface.
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Affiliation(s)
- Sila Cagri Isler
- Department of Periodontology, School of Dental MedicineUniversity of BernBernSwitzerland
- Department of Periodontology, Faculty of DentistryGazi UniversityAnkaraTurkey
| | - Benjamin Bellon
- Preclinical & Translational ResearchInstitut Straumann AGBaselSwitzerland
- Department of Periodontology, Faculty of DentistryUniversity of ZurichZurichSwitzerland
| | - Morten Foss
- iNANO and Department of Physics and AstronomyScience and TechnologyAarhusDenmark
| | - Benjamin Pippenger
- Department of Periodontology, School of Dental MedicineUniversity of BernBernSwitzerland
- Preclinical & Translational ResearchInstitut Straumann AGBaselSwitzerland
| | - Andreas Stavropoulos
- Department of Periodontology, School of Dental MedicineUniversity of BernBernSwitzerland
- Department of Periodontology, Faculty of OdontologyMalmö UniversityMalmöSweden
- Division of Conservative Dentistry and Periodontology, University Clinic of DentistryMedical University of ViennaViennaAustria
| | - Ole Zoffmann Andersen
- Department of Periodontology, School of Dental MedicineUniversity of BernBernSwitzerland
- Preclinical & Translational ResearchInstitut Straumann AGBaselSwitzerland
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Ekram B, Tolba E, El-Sayed AF, Müller WEG, Schröder HC, Wang X, Abdel-Hady BM. Cell migration, DNA fragmentation and antibacterial properties of novel silver doped calcium polyphosphate nanoparticles. Sci Rep 2024; 14:565. [PMID: 38177275 PMCID: PMC10766647 DOI: 10.1038/s41598-023-50849-z] [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: 02/12/2023] [Accepted: 12/27/2023] [Indexed: 01/06/2024] Open
Abstract
To combat infections, silver was used extensively in biomedical field but there was a need for a capping agent to eliminate its cytotoxic effects. In this study, polymeric calcium polyphosphate was doped by silver with three concentrations 1, 3 or 5 mol.% and were characterized by TEM, XRD, FTIR, TGA. Moreover, cytotoxicity, antibacterial, cell migration and DNA fragmentation assays were done to assure its safety. The results showed that the increase in silver percentage caused an increase in particle size. XRD showed the silver peaks, which indicated that it is present in its metallic form. The TGA showed that thermal stability was increased by increasing silver content. The antibacterial tests showed that the prepared nanoparticles have an antibacterial activity against tested pathogens. In addition, the cytotoxicity results showed that the samples exhibited non-cytotoxic behavior even with the highest doping concentration (5% Ag-CaPp). The cell migration assay showed that the increase in the silver concentration enhances cell migration up to 3% Ag-CaPp. The DNA fragmentation test revealed that all the prepared nanoparticles caused no fragmentation. From the results we can deduce that 3% Ag-CaPp was the optimum silver doped calcium polyphosphate concentration that could be used safely for medical applications.
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Affiliation(s)
- Basma Ekram
- Polymers and Pigments Department, Chemical Industries Research Institute, National Research Centre, Cairo, 12622, Egypt.
| | - Emad Tolba
- Polymers and Pigments Department, Chemical Industries Research Institute, National Research Centre, Cairo, 12622, Egypt
| | - Ahmed F El-Sayed
- Microbial Genetics Department, Biotechnology Research Institute, National Research Centre, Cairo, 12622, Egypt
- Egypt Center for Research and Regenerative Medicine (ECRRM), Cairo, Egypt
| | - Werner E G Müller
- ERC Advanced Investigator Grant Research Group at the Institute for Physiological Chemistry, University Medical Center of the Johannes Gutenberg University, Duesbergweg 6, 55128, Mainz, Germany
| | - Heinz C Schröder
- ERC Advanced Investigator Grant Research Group at the Institute for Physiological Chemistry, University Medical Center of the Johannes Gutenberg University, Duesbergweg 6, 55128, Mainz, Germany
| | - Xiaohong Wang
- ERC Advanced Investigator Grant Research Group at the Institute for Physiological Chemistry, University Medical Center of the Johannes Gutenberg University, Duesbergweg 6, 55128, Mainz, Germany
| | - Bothaina M Abdel-Hady
- Polymers and Pigments Department, Chemical Industries Research Institute, National Research Centre, Cairo, 12622, Egypt
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Hatt LP, van der Heide D, Armiento AR, Stoddart MJ. β-TCP from 3D-printed composite scaffolds acts as an effective phosphate source during osteogenic differentiation of human mesenchymal stromal cells. Front Cell Dev Biol 2023; 11:1258161. [PMID: 37965582 PMCID: PMC10641282 DOI: 10.3389/fcell.2023.1258161] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2023] [Accepted: 10/12/2023] [Indexed: 11/16/2023] Open
Abstract
Introduction: Human bone marrow-derived mesenchymal stromal cells (hBM-MSCs) are often combined with calcium phosphate (CaP)-based 3D-printed scaffolds with the goal of creating a bone substitute that can repair segmental bone defects. In vitro, the induction of osteogenic differentiation traditionally requires, among other supplements, the addition of β-glycerophosphate (BGP), which acts as a phosphate source. The aim of this study is to investigate whether phosphate contained within the 3D-printed scaffolds can effectively be used as a phosphate source during hBM-MSC in vitro osteogenesis. Methods: hBM-MSCs are cultured on 3D-printed discs composed of poly (lactic-co-glycolic acid) (PLGA) and β-tricalcium phosphate (β-TCP) for 28 days under osteogenic conditions, with and without the supplementation of BGP. The effects of BGP removal on various cellular parameters, including cell metabolic activity, alkaline phosphatase (ALP) presence and activity, proliferation, osteogenic gene expression, levels of free phosphate in the media and mineralisation, are assessed. Results: The removal of exogenous BGP increases cell metabolic activity, ALP activity, proliferation, and gene expression of matrix-related (COL1A1, IBSP, SPP1), transcriptional (SP7, RUNX2/SOX9, PPARγ) and phosphate-related (ALPL, ENPP1, ANKH, PHOSPHO1) markers in a donor dependent manner. BGP removal leads to decreased free phosphate concentration in the media and maintained of mineral deposition staining. Discussion: Our findings demonstrate the detrimental impact of exogenous BGP on hBM-MSCs cultured on a phosphate-based material and propose β-TCP embedded within 3D-printed scaffold as a sufficient phosphate source for hBM-MSCs during osteogenesis. The presented study provides novel insights into the interaction of hBM-MSCs with 3D-printed CaP based materials, an essential aspect for the advancement of bone tissue engineering strategies aimed at repairing segmental defects.
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Affiliation(s)
- Luan P. Hatt
- AO Research Institute Davos, Davos, Switzerland
- Institute for Biomechanics, ETH Zürich, Zürich, Switzerland
| | - Daphne van der Heide
- AO Research Institute Davos, Davos, Switzerland
- Institute for Biomechanics, ETH Zürich, Zürich, Switzerland
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Roldan L, Montoya C, Solanki V, Cai KQ, Yang M, Correa S, Orrego S. A Novel Injectable Piezoelectric Hydrogel for Periodontal Disease Treatment. ACS APPLIED MATERIALS & INTERFACES 2023; 15:43441-43454. [PMID: 37672788 DOI: 10.1021/acsami.3c08336] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/08/2023]
Abstract
Periodontal disease is a multifactorial, bacterially induced inflammatory condition characterized by the progressive destruction of periodontal tissues. The successful nonsurgical treatment of periodontitis requires multifunctional technologies offering antibacterial therapies and promotion of bone regeneration simultaneously. For the first time, in this study, an injectable piezoelectric hydrogel (PiezoGEL) was developed after combining gelatin methacryloyl (GelMA) with biocompatible piezoelectric fillers of barium titanate (BTO) that produce electrical charges when stimulated by biomechanical vibrations (e.g., mastication, movements). We harnessed the benefits of hydrogels (injectable, light curable, conforms to pocket spaces, biocompatible) with the bioactive effects of piezoelectric charges. A thorough biomaterial characterization confirmed piezoelectric fillers' successful integration with the hydrogel, photopolymerizability, injectability for clinical use, and electrical charge generation to enable bioactive effects (antibacterial and bone tissue regeneration). PiezoGEL showed significant reductions in pathogenic biofilm biomass (∼41%), metabolic activity (∼75%), and the number of viable cells (∼2-3 log) compared to hydrogels without BTO fillers in vitro. Molecular analysis related the antibacterial effects to be associated with reduced cell adhesion (downregulation of porP and fimA) and increased oxidative stress (upregulation of oxyR) genes. Moreover, PiezoGEL significantly enhanced bone marrow stem cell (BMSC) viability and osteogenic differentiation by upregulating RUNX2, COL1A1, and ALP. In vivo, PiezoGEL effectively reduced periodontal inflammation and increased bone tissue regeneration compared to control groups in a mice model. Findings from this study suggest PiezoGEL to be a promising and novel therapeutic candidate for the treatment of periodontal disease nonsurgically.
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Affiliation(s)
- Lina Roldan
- Department of Oral Health Sciences, Kornberg School of Dentistry, Temple University, Philadelphia, Pennsylvania 19140, United States
- Bioengineering Research Group (GIB), Universidad EAFIT, Medellín 050037, Colombia
| | - Carolina Montoya
- Department of Oral Health Sciences, Kornberg School of Dentistry, Temple University, Philadelphia, Pennsylvania 19140, United States
| | - Varun Solanki
- Department of Oral Health Sciences, Kornberg School of Dentistry, Temple University, Philadelphia, Pennsylvania 19140, United States
| | - Kathy Q Cai
- Histopathology Facility, Fox Chase Cancer, Temple University, Philadelphia, Pennsylvania 19140, United States
| | - Maobin Yang
- Department of Oral Health Sciences, Kornberg School of Dentistry, Temple University, Philadelphia, Pennsylvania 19140, United States
- Department of Endodontology, Kornberg School of Dentistry, Temple University, Philadelphia, Pennsylvania 19140, United States
| | - Santiago Correa
- Bioengineering Research Group (GIB), Universidad EAFIT, Medellín 050037, Colombia
| | - Santiago Orrego
- Department of Oral Health Sciences, Kornberg School of Dentistry, Temple University, Philadelphia, Pennsylvania 19140, United States
- Bioengineering Department, College of Engineering, Temple University. Philadelphia, Pennsylvania 19122, United States
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Hatt LP, Wirth S, Ristaniemi A, Ciric DJ, Thompson K, Eglin D, Stoddart MJ, Armiento AR. Micro-porous PLGA/ β-TCP/TPU scaffolds prepared by solvent-based 3D printing for bone tissue engineering purposes. Regen Biomater 2023; 10:rbad084. [PMID: 37936893 PMCID: PMC10627288 DOI: 10.1093/rb/rbad084] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2023] [Revised: 08/14/2023] [Accepted: 08/31/2023] [Indexed: 11/09/2023] Open
Abstract
The 3D printing process of fused deposition modelling is an attractive fabrication approach to create tissue-engineered bone substitutes to regenerate large mandibular bone defects, but often lacks desired surface porosity for enhanced protein adsorption and cell adhesion. Solvent-based printing leads to the spontaneous formation of micropores on the scaffold's surface upon solvent removal, without the need for further post processing. Our aim is to create and characterize porous scaffolds using a new formulation composed of mechanically stable poly(lactic-co-glycol acid) and osteoconductive β-tricalcium phosphate with and without the addition of elastic thermoplastic polyurethane prepared by solvent-based 3D-printing technique. Large-scale regenerative scaffolds can be 3D-printed with adequate fidelity and show porosity at multiple levels analysed via micro-computer tomography, scanning electron microscopy and N2 sorption. Superior mechanical properties compared to a commercially available calcium phosphate ink are demonstrated in compression and screw pull out tests. Biological assessments including cell activity assay and live-dead staining prove the scaffold's cytocompatibility. Osteoconductive properties are demonstrated by performing an osteogenic differentiation assay with primary human bone marrow mesenchymal stromal cells. We propose a versatile fabrication process to create porous 3D-printed scaffolds with adequate mechanical stability and osteoconductivity, both important characteristics for segmental mandibular bone reconstruction.
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Affiliation(s)
- Luan P Hatt
- AO Research Institute Davos, 7270 Davos Platz, Switzerland
- Institute for Biomechanics, ETH Zürich, 8093 Zürich, Switzerland
| | - Sylvie Wirth
- AO Research Institute Davos, 7270 Davos Platz, Switzerland
- Institute for Biomechanics, ETH Zürich, 8093 Zürich, Switzerland
| | | | - Daniel J Ciric
- AO Research Institute Davos, 7270 Davos Platz, Switzerland
| | - Keith Thompson
- AO Research Institute Davos, 7270 Davos Platz, Switzerland
- UCB Pharma, SL1 3WE Slough, UK
| | - David Eglin
- AO Research Institute Davos, 7270 Davos Platz, Switzerland
- Mines Saint-Étienne, Université de Lyon, Université Jean Monnet, INSERM, U1059, 42023 Sainbiose, Saint-Étienne, France
| | - Martin J Stoddart
- AO Research Institute Davos, 7270 Davos Platz, Switzerland
- Medical Center, Faculty of Medicine, Albert-Ludwigs-University of Freiburg, 79106 Freiburg, Germany
| | - Angela R Armiento
- AO Research Institute Davos, 7270 Davos Platz, Switzerland
- UCB Pharma, SL1 3WE Slough, UK
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Hatt LP, Armiento AR, Mys K, Thompson K, Hildebrand M, Nehrbass D, Müller WEG, Zeiter S, Eglin D, Stoddart MJ. Standard in vitro evaluations of engineered bone substitutes are not sufficient to predict in vivo preclinical model outcomes. Acta Biomater 2023; 156:177-189. [PMID: 35988660 DOI: 10.1016/j.actbio.2022.08.021] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2022] [Revised: 08/10/2022] [Accepted: 08/11/2022] [Indexed: 01/18/2023]
Abstract
Understanding the optimal conditions required for bone healing can have a substantial impact to target the problem of non-unions and large bone defects. The combination of bioactive factors, regenerative progenitor cells and biomaterials to form a tissue engineered (TE) complex is a promising solution but translation to the clinic has been slow. We hypothesized the typical material testing algorithm used is insufficient and leads to materials being mischaracterized as promising. In the first part of this study, human bone marrow - derived mesenchymal stromal cells (hBM-MSCs) were embedded in three commonly used biomaterials (hyaluronic acid methacrylate, gelatin methacrylate and fibrin) and combined with relevant bioactive osteogenesis factors (dexamethasone microparticles and polyphosphate nanoparticles) to form a TE construct that underwent in vitro osteogenic differentiation for 28 days. Gene expression of relevant transcription factors and osteogenic markers, and von Kossa staining were performed. In the second and third part of this study, the same combination of TE constructs were implanted subcutaneously (cell containing) in T cell-deficient athymic Crl:NIH-Foxn1rnu rats for 8 weeks or cell free in an immunocompetent New Zealand white rabbit calvarial model for 6 weeks, respectively. Osteogenic performance was investigated via MicroCT imaging and histology staining. The in vitro study showed enhanced upregulation of relevant genes and significant mineral deposition within the three biomaterials, generally considered as a positive result. Subcutaneous implantation indicates none to minor ectopic bone formation. No enhanced calvarial bone healing was detected in implanted biomaterials compared to the empty defect. The reasons for the poor correlation of in vitro and in vivo outcomes are unclear and needs further investigation. This study highlights the discrepancy between in vitro and in vivo outcomes, demonstrating that in vitro data should be interpreted with extreme caution. In vitro models with higher complexity are necessary to increase value for translational studies. STATEMENT OF SIGNIFICANCE: Preclinical testing of newly developed biomaterials is a crucial element of the development cycle. Despite this, there is still significant discrepancy between in vitro and in vivo test results. Within this study we investigate multiple combinations of materials and osteogenic stimulants and demonstrate a poor correlation between the in vitro and in vivo data. We propose rationale for why this may be the case and suggest a modified testing algorithm.
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Affiliation(s)
- Luan P Hatt
- AO Research Institute Davos, 7270 Davos Platz, Switzerland; Institute for Biomechanics, ETH Zürich; 8093 Zürich, Switzerland
| | | | - Karen Mys
- AO Research Institute Davos, 7270 Davos Platz, Switzerland
| | - Keith Thompson
- AO Research Institute Davos, 7270 Davos Platz, Switzerland
| | | | - Dirk Nehrbass
- AO Research Institute Davos, 7270 Davos Platz, Switzerland
| | - Werner E G Müller
- Institute for Physiological Chemistry, University Medical Center of the Johannes Gutenberg University, Mainz, Germany
| | - Stephan Zeiter
- AO Research Institute Davos, 7270 Davos Platz, Switzerland
| | - David Eglin
- Mines Saint-Etienne, Univ Lyon, Univ Jean Monnet, INSERM, U 1059 Sainbiose, Centre CIS, F-42023 Saint-Etienne, France
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Pazarçeviren AE, Akbaba S, Evis Z, Tezcaner A. Versatile-in-All-Trades: Multifunctional Boron-Doped Calcium-Deficient Hydroxyapatite Directs Immunomodulation and Regeneration. ACS Biomater Sci Eng 2022; 8:3038-3053. [PMID: 35708275 PMCID: PMC9277590 DOI: 10.1021/acsbiomaterials.2c00242] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Osseointegration of implants depends on several intertwined factors: osteogenesis, angiogenesis, and immunomodulation. Lately, novel reinforcements allowing faster bonding with osseous tissue have been explored intensively. In this study, we hypothesized the use of boron as a major multifunctional ion to confer versatility to calcium-deficient hydroxyapatite (cHA) synthesized by a wet precipitation/microwave reflux method. By synthesis of boron-doped calcium-deficient hydroxyapatite (BcHA), we expected to obtain an osteoimmunomodulatory and regenerative nanoreinforcement. BcHA was found to possess a pure HA phase, a greater surface area (66.41 m2/g, p = 0.028), and cumulative concentrations of Ca (207.87 ± 6.90 mg/mL, p < 0.001) and B (112.70 ± 11.79 mg/mL, p < 0.001) released in comparison to cHA. Osteogenic potential of BcHA was analyzed using human fetal osteoblasts. BcHA resulted in a drastic increase in the ALP activity (1.11 ± 0.11 mmol/gDNA·min, p < 0.001), biomineralization rate, and osteogenic gene expressions compared to cHA. BcHA angiogenic potential was investigated using human umbilical cord vein endothelial cells. Significantly, the highest VEGF-A release (1111.14 ± 87.82 in 4 h, p = 0.009) and angiogenic gene expressions were obtained for BcHA-treated samples. These samples were also observed to induce a more prominent and highly branched tube network. Finally, inflammatory and inflammasome responses toward BcHA were elucidated using human monocyte-derived macrophages differentiated from THP-1s. BcHA exhibited lower CAS-1 release (50.18 ± 5.52 μg/gDNA μg/gDNA) and higher IL-10 release (126.97 ± 15.05 μg/gDNA) than cHA. In addition, BcHA treatment led to increased expression of regenerative genes such as VEGF-A, RANKL, and BMP-2. In vitro results demonstrated that BcHA has tremendous osteogenic, angiogenic, and immunomodulatory potential to be employed as a "versatile-in-all-trades" modality in various bone tissue engineering applications.
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Affiliation(s)
| | - Sema Akbaba
- Department of Biotechnology, Middle East Technical University, Ankara 06800, Turkey
| | - Zafer Evis
- Department of Engineering Sciences, Middle East Technical University, Ankara 06800, Turkey
| | - Ayşen Tezcaner
- Department of Engineering Sciences, Middle East Technical University, Ankara 06800, Turkey.,Center of Excellence in Biomaterials and Tissue Engineering, Ankara 06800, Turkey
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Ibrahim Y, Kamoun E, Abdel Moaty M, Mohy El Din M. Evaluation of carbon nanotubes-hydroxyapatite nanocomposites as bioactive implant coats radiated by near infrared laser. Eur J Oral Sci 2022; 130:e12873. [PMID: 35673772 DOI: 10.1111/eos.12873] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2022] [Accepted: 05/09/2022] [Indexed: 11/26/2022]
Abstract
This study aimed to evaluate carbon nanotubes-hydroxyapatite nanocomposites as bioactive titanium implant coats and to assess the effect of near-infrared radiation on these nanocomposites. Carbon nanotubes were acid-functionalized, and hydroxyapatite was prepared by the wet-chemical precipitation method. Both precursors were used to prepare the carbon nanotubes-hydroxyapatite nanocomposites in two concentrations of hydroxyapatite (0.5 and 1 wt.%). The formed nanocomposites were characterized and used to coat silanized titanium discs and cylinders. Half the specimens of each group were radiated by near-infrared laser, then wettability and shear bond strength were tested for all specimens. Bioactivity was tested by monitoring the formation of calcium phosphate compounds after soaking in simulated body fluid. A significant increase in wettability and bond strength was found in the radiated coats compared to the non-radiated ones with the 1% hydroxyapatite group showing the highest values followed by 0.5% hydroxyapatite then the carbon nanotubes group. The two-way ANOVA test showed that both the difference in material and the laser treatment have had a statistically significant contribution to the increase in wettability and bond strength. The radiated groups also contributed to the formation of more calcium phosphate crystals of larger sizes and higher degrees of crystallinity.
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Affiliation(s)
- Yomna Ibrahim
- Dental Biomaterials Department, Faculty of Dentistry, Alexandria University, Alexandria, Egypt
| | - Elbadawy Kamoun
- Polymeric Materials Research Department, Advanced Technology and New Materials Research Institute, City of Scientific Research and Technological Applications, New Borg Al-Arab City, Alexandria, Egypt.,Nanotechnology Research Center, The British University in Egypt, El-Sherouk City, Cairo, Egypt
| | - Maha Abdel Moaty
- Dental Biomaterials Department, Faculty of Dentistry, Alexandria University, Alexandria, Egypt
| | - Mona Mohy El Din
- Dental Biomaterials Department, Faculty of Dentistry, Alexandria University, Alexandria, Egypt
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Bordini EAF, Cassiano FB, Bronze-Uhle ES, Alamo L, Hebling J, de Souza Costa CA, Soares DG. Chitosan in association with osteogenic factors as a cell-homing platform for dentin regeneration: Analysis in a pulp-in-a-chip model. Dent Mater 2022; 38:655-669. [PMID: 35210124 DOI: 10.1016/j.dental.2022.02.004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2021] [Revised: 01/04/2022] [Accepted: 02/12/2022] [Indexed: 12/18/2022]
Abstract
OBJECTIVE In this paper we propose the association of β-glycerophosphate (βGP) and calcium-hydroxide with chitosan (CH) to formulate a porous bioactive scaffold suitable as a cell-homing platform for dentin regeneration. METHODS Calcium hydroxide and βGP solutions were incorporated into chitosan to modulate scaffold architecture and composition by a phase separation technique. Architecture, chemical composition, and degradability were evaluated, and biological characterizations were performed by the seeding of dental pulp cells (DPCs) onto scaffolds, or by cultivating them in contact with leachable components (extracts), to determine cytocompatibility and odontoblastic differentiation. Cell-free scaffolds were then positioned in intimate contact with a 3D culture of DPCs in a pulp-in-a-chip platform under simulated pulp pressure. Cell mobilization and odontoblastic marker expression were evaluated. Deposition of mineralized matrix was assessed in direct contact with dentin, in the absence of osteogenic factors. RESULTS Incorporation of calcium hydroxide and βGP generated a stable porous chitosan scaffold containing Ca-P nanoglobule topography (CH-Ca-βGP), which favored cell viability, alkaline phosphatase activity, and mineralized matrix deposition by cells seeded onto the scaffold structure and at a distance. The pulp-in-a-chip assay denoted its chemotactic and bioactive potential, since dentin sialoprotein-positive DPCs from 3D culture adhered to CH-Ca-βGP more than to plain chitosan. The higher deposition of mineralized matrix onto the scaffold and surrounding dentin was also observed. SIGNIFICANCE A CH-Ca-βGP scaffold creates a microenvironment capable of mobilizing DPC migration toward its structure, harnessing the odontogenic potential and culminating in the expression of a highly mineralizing phenotype, key factors for a cell-homing strategy.
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Affiliation(s)
- E A F Bordini
- Department of Physiology and Pathology, Univ. Estadual Paulista - UNESP, Araraquara School of Dentistry, Humaitá Street, 1680, Araraquara, SP 14801-903, Brazil; Department of Operative Dentistry, Endodontics and Dental Materials, Sao Paulo University - USP, Bauru School of Dentistry, Al. Dr. Octávio Pinheiro Brizola, 9-75, Bauru, SP 17012-901, Brazil
| | - F B Cassiano
- Department of Operative Dentistry, Endodontics and Dental Materials, Sao Paulo University - USP, Bauru School of Dentistry, Al. Dr. Octávio Pinheiro Brizola, 9-75, Bauru, SP 17012-901, Brazil
| | - E S Bronze-Uhle
- Department of Operative Dentistry, Endodontics and Dental Materials, Sao Paulo University - USP, Bauru School of Dentistry, Al. Dr. Octávio Pinheiro Brizola, 9-75, Bauru, SP 17012-901, Brazil
| | - L Alamo
- Department of Operative Dentistry, Endodontics and Dental Materials, Sao Paulo University - USP, Bauru School of Dentistry, Al. Dr. Octávio Pinheiro Brizola, 9-75, Bauru, SP 17012-901, Brazil
| | - J Hebling
- Department of Orthodontics and Pediatric Dentistry, Univ. Estadual Paulista - UNESP, Araraquara School of Dentistry, Humaitá Street, 1680, Araraquara, SP 14801-903, Brazil
| | - C A de Souza Costa
- Department of Physiology and Pathology, Univ. Estadual Paulista - UNESP, Araraquara School of Dentistry, Humaitá Street, 1680, Araraquara, SP 14801-903, Brazil
| | - D G Soares
- Department of Operative Dentistry, Endodontics and Dental Materials, Sao Paulo University - USP, Bauru School of Dentistry, Al. Dr. Octávio Pinheiro Brizola, 9-75, Bauru, SP 17012-901, Brazil.
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Suspension of Amorphous Calcium Phosphate Nanoparticles Impact Commitment of Human Adipose-Derived Stem Cells In Vitro. BIOLOGY 2021; 10:biology10070675. [PMID: 34356530 PMCID: PMC8301486 DOI: 10.3390/biology10070675] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/22/2021] [Accepted: 07/14/2021] [Indexed: 12/18/2022]
Abstract
Amorphous calcium phosphate (aCaP) nanoparticles may trigger the osteogenic commitment of adipose-derived stem cells (ASCs) in vitro. The ASCs of three human donors are investigated using basal culture medium DMEM to either 5 or 50 µg/mL aCaP nanoparticles suspension (control: no nanoparticles). After 7 or 14 days, stem cell marker genes, as well as endothelial, osteogenic, chondrogenic, and adipogenic genes, are analyzed by qPCR. Free calcium and phosphate ion concentrations are assessed in the cell culture supernatant. After one week and 5 µg/mL aCaP, downregulation of osteogenic markers ALP and Runx2 is found, and averaged across the three donors. Our results show that after two weeks, ALP is further downregulated, but Runx2 is upregulated. Endothelial cell marker genes, such as CD31 and CD34, are upregulated with 50 µg/mL aCaP and a 2-week exposure. Inter-donor variability is high: Two out of three donors show a significant upregulation of ALP and Runx2 at day 14 with 50 µg/mL aCaP compared to 5 µg/mL aCaP. Notably, all changes in stem cell commitment are obtained in the absence of an osteogenic medium. While the chemical composition of the culture medium and the saturation status towards calcium phosphate phases remain approximately the same for all conditions, gene expression of ASCs changes considerably. Hence, aCaP nanoparticles show the potential to trigger osteogenic and endothelial commitment in ASCs.
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Baijal K, Downey M. The promises of lysine polyphosphorylation as a regulatory modification in mammals are tempered by conceptual and technical challenges. Bioessays 2021; 43:e2100058. [PMID: 33998006 DOI: 10.1002/bies.202100058] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2021] [Revised: 04/13/2021] [Accepted: 04/16/2021] [Indexed: 12/17/2022]
Abstract
Polyphosphate (polyP) is a ubiquitous biomolecule thought to be present in all cells on Earth. PolyP is deceivingly simple, consisting of repeated units of inorganic phosphates polymerized in long energy-rich chains. PolyP is involved in diverse functions in mammalian systems-from cell signaling to blood clotting. One exciting avenue of research is a new nonenzymatic post-translational modification, termed lysine polyphosphorylation, wherein polyP chains are covalently attached to lysine residues of target proteins. While the modification was first characterized in budding yeast, recent work has now identified the first human targets. There is significant promise in this area of biomedical research, but a number of technical issues and knowledge gaps present challenges to rapid progress. In this review, the current state of the field is summarized and existing roadblocks related to the study of lysine polyphosphorylation in higher eukaryotes are introduced. It is discussed how limited methods to identify targets of polyphosphorylation are further impacted by low concentration, unknown regulatory enzymes, and sequestration of polyP into compartments in mammalian systems. Furthermore, suggestions on how these obstacles could be addressed or what their physiological relevance may be within mammalian cells are presented.
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Affiliation(s)
- Kanchi Baijal
- Department of Cellular & Molecular Medicine, University of Ottawa, Ottawa, Ontario, Canada.,Ottawa Institute of Systems Biology, University of Ottawa, Ottawa, Ontario, Canada
| | - Michael Downey
- Department of Cellular & Molecular Medicine, University of Ottawa, Ottawa, Ontario, Canada.,Ottawa Institute of Systems Biology, University of Ottawa, Ottawa, Ontario, Canada
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Lin H, Zhou Y, Lei Q, Lin D, Chen J, Wu C. Effect of inorganic phosphate on migration and osteogenic differentiation of bone marrow mesenchymal stem cells. BMC DEVELOPMENTAL BIOLOGY 2021; 21:1. [PMID: 33407089 PMCID: PMC7788862 DOI: 10.1186/s12861-020-00229-x] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/17/2020] [Accepted: 11/10/2020] [Indexed: 12/26/2022]
Abstract
Background Phosphate is the major ingredient of bone tissue, and is also an important component of commercial bone substitute materials, bone scaffolds, and implant surface coatings. With the dissolution of the bone substitute materials and the degradation by cells, local ion concentrations will change and affect bone tissue reconstruction. Bone marrow -derived mesenchymal stem cells (BM-MSCs) are main autologous cells to repair injured bone. When bone injure occurs, BM-MSCs migrate to the damaged area, differentiate into osteoblasts, and secrete bioactive factors to promote bone tissue repaired. This study aimed to investigate the effect of inorganic phosphate (Pi) at a series of concentration on migration and osteogenic differentiation of human bone marrow -derived mesenchymal stem cells(hBM-MSCs). Methods The culture of hBM-MSCs in mediums with different concentration of Pi from 2 mM to 10 mM were performed. HBM-MSCs migration were examined with transwell assays. HBM-MSCs proliferation were evaluated by cell counting kit-8 colorimetric method. Osteogenic genes expression were analyzed by real-time reverse transcriptase polymerase chain reaction. Mineralized nodules formation were demonstrated by Alizarin red staining. Result 4–10 mM Pi could effectively promote the migration of hBM-MSCs at 12 h and 18 h. There was no significant difference in the migration number of hBM-MSCs in Pi culture mediums at a concentration of 6, 8, and10mM. 2–10 mM Pi could promote the proliferation of hBM-MSCs to varying degrees in the observation period, while 4–10 mM Pi could promote the osteogenic differentiation and mineralization of hBM-MSCs. Conclusion The findings in our study showed 4-10 mM Pi could promote the migration, osteogenic differentiation, and mineralization of hBM-MSCs. Supplementary Information The online version contains supplementary material available at 10.1186/s12861-020-00229-x.
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Affiliation(s)
- Hengzhang Lin
- Department of Stomatology, Fujian Provincial Governmental Hospital, Fuzhou, China
| | - Yong Zhou
- Fujian Key Laboratory of Oral Diseases & Fujian Provincial Engineering Research Center of Oral Biomaterial & Stomatological Key Laboratory of Fujian College and University, School and Hospital of Stomatology, Fujian Medical University, Fuzhou, China
| | - Qun Lei
- Fujian Key Laboratory of Oral Diseases & Fujian Provincial Engineering Research Center of Oral Biomaterial & Stomatological Key Laboratory of Fujian College and University, School and Hospital of Stomatology, Fujian Medical University, Fuzhou, China.
| | - Dong Lin
- Fujian Key Laboratory of Oral Diseases & Fujian Provincial Engineering Research Center of Oral Biomaterial & Stomatological Key Laboratory of Fujian College and University, School and Hospital of Stomatology, Fujian Medical University, Fuzhou, China
| | - Jiang Chen
- Fujian Key Laboratory of Oral Diseases & Fujian Provincial Engineering Research Center of Oral Biomaterial & Stomatological Key Laboratory of Fujian College and University, School and Hospital of Stomatology, Fujian Medical University, Fuzhou, China
| | - Chuhuo Wu
- Fujian Medical University, Fuzhou, China
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Stable Reference Genes for qPCR Analysis in BM-MSCs Undergoing Osteogenic Differentiation within 3D Hyaluronan-Based Hydrogels. Int J Mol Sci 2020; 21:ijms21239195. [PMID: 33276559 PMCID: PMC7729573 DOI: 10.3390/ijms21239195] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2020] [Revised: 11/22/2020] [Accepted: 11/30/2020] [Indexed: 11/17/2022] Open
Abstract
Reverse transcription quantitative polymerase chain reaction (RT-qPCR) enables the monitoring of changes in cell phenotype via the high-throughput screening of numerous genes. RT-qPCR is a fundamental approach in numerous research fields, including biomaterials, yet little attention has been given to the potential impact of 3D versus monolayer (2D) cell culture and to the requirement for a constant validation of the multiple steps of gene expression analysis. The aim of this study is to use high-quality RNA to identify the most suitable reference genes for RT-qPCR analysis during the osteogenic differentiation of human bone marrow mesenchymal stem/stromal cells (BM-MSCs). BM-MSCs are cultured under osteogenic conditions for 28 days in 2D or within hyaluronic acid hydrogels (3D). RNA is subject to quality controls and is then used to identify the most stable reference genes using geNorm, NormFinder, and the ∆Cq method. The effect of the reverse transcriptase is investigated, as well as the expression of osteogenic-related markers. This study shows marked differences in the stability of reference genes between 2D (RPLP0/GAPDH) and 3D (OAZ1/PPIA) culture, suggesting that it is critical to choose appropriate reference genes for 3D osteogenic cell cultures. Thus, a thorough validation under specific experimental settings is essential to obtain meaningful gene expression results.
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15
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Steckiewicz KP, Inkielewicz-Stepniak I. Modified Nanoparticles as Potential Agents in Bone Diseases: Cancer and Implant-Related Complications. NANOMATERIALS (BASEL, SWITZERLAND) 2020; 10:E658. [PMID: 32244745 PMCID: PMC7221902 DOI: 10.3390/nano10040658] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/09/2020] [Revised: 03/29/2020] [Accepted: 03/30/2020] [Indexed: 12/16/2022]
Abstract
Materials sized 1-100 nm are the nanotechnology's field of interest. Because of the unique properties such as the ability to penetrate biological barriers and a high surface to volume ratio, nanoparticles (NPs) are a powerful tool to be used in medicine and industry. This review discusses the role of nanotechnology in bone-related issues: osteosarcoma (bone cancer), the biocompatibility of the implants and implant-related infections. In cancer therapy, NPs can be used as (I) cytotoxic agents, (II) drug delivery platforms and (III) in thermotherapy. In implant-related issues, NPs can be used as (I) antimicrobial agents and (II) adjuvants to increase the biocompatibility of implant surface. Properties of NPs depend on (I) the type of NPs, (II) their size, (III) shape, (IV) concentration, (V) incubation time, (VI) functionalization and (VII) capping agent type.
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Affiliation(s)
| | - Iwona Inkielewicz-Stepniak
- Chair and Department of Medical Chemistry, Faculty of Medicine, Medical University of Gdansk, ul. Dębinki 1, 80-211 Gdansk, Poland;
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Klinthoopthamrong N, Chaikiawkeaw D, Phoolcharoen W, Rattanapisit K, Kaewpungsup P, Pavasant P, Hoven VP. Bacterial cellulose membrane conjugated with plant-derived osteopontin: Preparation and its potential for bone tissue regeneration. Int J Biol Macromol 2020; 149:51-59. [PMID: 31981668 DOI: 10.1016/j.ijbiomac.2020.01.158] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2019] [Revised: 01/07/2020] [Accepted: 01/16/2020] [Indexed: 12/12/2022]
Abstract
Bacterial cellulose membrane (BCM) has been recently recognized as a new generation of carbohydrate-based nanomaterial that possesses a great potential in tissue engineering applications. This research aims to develop an active non-resorbable guided tissue regeneration (GTR) membrane from BCM by conjugating with plant-derived recombinant human osteopontin (p-rhOPN), an economically produced and RGD-containing biomolecule. The BCM was initially grafted with poly(acrylic acid) (PAA) brushes to form poly(acrylic acid)-grafted BCM. Multiple carboxyl groups introduced to the BCM by PAA can serve as active anchoring points for p-rhOPN conjugation and yielded p-rhOPN-BCM. All chemically modified BCMs were characterized by attenuated total reflectance Fourier transform infrared spectroscopy and X-ray photoelectron spectroscopy, while their surface morphology was evaluated by field emission-scanning electron microscopy and atomic force microscopy analyses. The amount of p-rhOPN adhered on the membrane was quantified by enzyme-linked immunosorbent assay. The immunocytochemistry, two-stage quantitative real-time reverse transcriptase polymerase chain reaction and in vitro mineralization analyses strongly suggested that p-rhOPN-BCM could elicit biological functions leading to the enhancement of osteogenic differentiation of human periodontal ligament stem cells as effective as BCM conjugated with commercially available rhOPN from mammalian cells (rhOPN-BCM), suggesting its potential to be used as GTR membrane to promote bone tissue regeneration.
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Affiliation(s)
- Nichapa Klinthoopthamrong
- Program in Petrochemistry and Polymer Science, Faculty of Science, Chulalongkorn University, Phayathai Road, Pathumwan, Bangkok 10330, Thailand
| | - Daneeya Chaikiawkeaw
- Department of Anatomy, Faculty of Dentistry, Chulalongkorn University, Phayathai Road, Pathumwan, Bangkok 10330, Thailand
| | - Waranyoo Phoolcharoen
- Department of Pharmacognosy and Pharmaceutical Botany, Faculty of Pharmaceutical Sciences, Chulalongkorn University, Phayathai Road, Pathumwan, Bangkok 10330, Thailand; Research Unit for Plant-Produced Pharmaceuticals, Chulalongkorn University, Phayathai Road, Pathumwan, Bangkok 10330, Thailand
| | - Kaewta Rattanapisit
- Research Unit for Plant-Produced Pharmaceuticals, Chulalongkorn University, Phayathai Road, Pathumwan, Bangkok 10330, Thailand
| | - Pornjira Kaewpungsup
- Mineralized Tissue Research Unit, Faculty of Dentistry, Chulalongkorn University, Phayathai Road, Pathumwan, Bangkok 10330, Thailand
| | - Prasit Pavasant
- Department of Anatomy, Faculty of Dentistry, Chulalongkorn University, Phayathai Road, Pathumwan, Bangkok 10330, Thailand
| | - Voravee P Hoven
- Department of Chemistry, Faculty of Science, Chulalongkorn University, Phayathai Road, Pathumwan, Bangkok 10330, Thailand; Center of Excellence in Materials and Bio-interfaces, Chulalongkorn University, Phayathai Road, Pathumwan, Bangkok 10330, Thailand.
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