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Liang W, Zhou C, Jin S, Fu L, Zhang H, Huang X, Long H, Ming W, Zhao J. An update on the advances in the field of nanostructured drug delivery systems for a variety of orthopedic applications. Drug Deliv 2023; 30:2241667. [PMID: 38037335 PMCID: PMC10987052 DOI: 10.1080/10717544.2023.2241667] [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: 04/30/2023] [Accepted: 07/09/2023] [Indexed: 12/02/2023] Open
Abstract
Nanotechnology has made significant progress in various fields, including medicine, in recent times. The application of nanotechnology in drug delivery has sparked a lot of research interest, especially due to its potential to revolutionize the field. Researchers have been working on developing nanomaterials with distinctive characteristics that can be utilized in the improvement of drug delivery systems (DDS) for the local, targeted, and sustained release of drugs. This approach has shown great potential in managing diseases more effectively with reduced toxicity. In the medical field of orthopedics, the use of nanotechnology is also being explored, and there is extensive research being conducted to determine its potential benefits in treatment, diagnostics, and research. Specifically, nanophase drug delivery is a promising technique that has demonstrated the capability of delivering medications on a nanoscale for various orthopedic applications. In this article, we will explore current advancements in the area of nanostructured DDS for orthopedic use.
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Affiliation(s)
- Wenqing Liang
- Department of Orthopedics, Zhoushan Hospital of Traditional Chinese Medicine Affiliated to Zhejiang Chinese Medical University, Zhoushan, China
| | - Chao Zhou
- Department of Orthopedics, Zhoushan Guanghua Hospital, Zhoushan, China
| | - Songtao Jin
- Department of Orthopedics, Shaoxing People’s Hospital, Shaoxing, China
| | - Lifeng Fu
- Department of Orthopedics, Shaoxing City Keqiao District Hospital of traditional Chinese Medicine, Shaoxing, China
| | - Hengjian Zhang
- Department of Orthopedics, Zhoushan Hospital of Traditional Chinese Medicine Affiliated to Zhejiang Chinese Medical University, Zhoushan, China
| | - Xiaogang Huang
- Department of Orthopedics, Zhoushan Hospital of Traditional Chinese Medicine Affiliated to Zhejiang Chinese Medical University, Zhoushan, China
| | - Hengguo Long
- Department of Orthopedics, Zhoushan Hospital of Traditional Chinese Medicine Affiliated to Zhejiang Chinese Medical University, Zhoushan, China
| | - Wenyi Ming
- Department of Orthopedics, Zhoushan Hospital of Traditional Chinese Medicine Affiliated to Zhejiang Chinese Medical University, Zhoushan, China
| | - Jiayi Zhao
- Department of Orthopedics, Zhoushan Hospital of Traditional Chinese Medicine Affiliated to Zhejiang Chinese Medical University, Zhoushan, China
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Labusca L, Herea DD, Emanuela Minuti A, Stavila C, Danceanu C, Plamadeala P, Chiriac H, Lupu N. Magnetic Nanoparticles and Magnetic Field Exposure Enhances Chondrogenesis of Human Adipose Derived Mesenchymal Stem Cells But Not of Wharton Jelly Mesenchymal Stem Cells. Front Bioeng Biotechnol 2021; 9:737132. [PMID: 34733830 PMCID: PMC8558412 DOI: 10.3389/fbioe.2021.737132] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2021] [Accepted: 09/10/2021] [Indexed: 02/05/2023] Open
Abstract
Purpose: Iron oxide based magnetic nanoparticles (MNP) are versatile tools in biology and medicine. Adipose derived mesenchymal stem cells (ADSC) and Wharton Jelly mesenchymal stem cells (WJMSC) are currently tested in different strategies for regenerative regenerative medicine (RM) purposes. Their superiority compared to other mesenchymal stem cell consists in larger availability, and superior proliferative and differentiation potential. Magnetic field (MF) exposure of MNP-loaded ADSC has been proposed as a method to deliver mechanical stimulation for increasing conversion to musculoskeletal lineages. In this study, we investigated comparatively chondrogenic conversion of ADSC-MNP and WJMSC with or without MF exposure in order to identify the most appropriate cell source and differentiation protocol for future cartilage engineering strategies. Methods: Human primary ADSC and WJMSC from various donors were loaded with proprietary uncoated MNP. The in vitro effect on proliferation and cellular senescence (beta galactosidase assay) in long term culture was assessed. In vitro chondrogenic differentiation in pellet culture system, with or without MF exposure, was assessed using pellet histology (Safranin O staining) as well as quantitative evaluation of glycosaminoglycan (GAG) deposition per cell. Results: ADSC-MNP complexes displayed superior proliferative capability and decreased senescence after long term (28 days) culture in vitro compared to non-loaded ADSC and to WJMSC-MNP. Significant increase in chondrogenesis conversion in terms of GAG/cell ratio could be observed in ADSC-MNP. MF exposure increased glycosaminoglycan deposition in MNP-loaded ADSC, but not in WJMSC. Conclusion: ADSC-MNP display decreased cellular senescence and superior chondrogenic capability in vitro compared to non-loaded cells as well as to WJMSC-MNP. MF exposure further increases ADSC-MNP chondrogenesis in ADSC, but not in WJMSC. Loading ADSC with MNP can derive a successful procedure for obtaining improved chondrogenesis in ADSC. Further in vivo studies are needed to confirm the utility of ADSC-MNP complexes for cartilage engineering.
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Affiliation(s)
- Luminita Labusca
- National Institute of Research and Development for Technical Physics, Iasi, Romania
- Orthopedics and Traumatology Clinic County Emergency Hospital Saint Spiridon, Iasi, Romania
| | - Dumitru-Daniel Herea
- National Institute of Research and Development for Technical Physics, Iasi, Romania
| | - Anca Emanuela Minuti
- National Institute of Research and Development for Technical Physics, Iasi, Romania
- Faculty of Physics, Alexandru Ioan Cuza University, Iasi, Romania
| | - Cristina Stavila
- National Institute of Research and Development for Technical Physics, Iasi, Romania
- Faculty of Physics, Alexandru Ioan Cuza University, Iasi, Romania
| | - Camelia Danceanu
- National Institute of Research and Development for Technical Physics, Iasi, Romania
- Faculty of Physics, Alexandru Ioan Cuza University, Iasi, Romania
| | - Petru Plamadeala
- Pathology Department County Children Emergency Hospital Saint Mary, Iasi, Romania
| | - Horia Chiriac
- National Institute of Research and Development for Technical Physics, Iasi, Romania
| | - Nicoleta Lupu
- National Institute of Research and Development for Technical Physics, Iasi, Romania
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Friedrich RP, Cicha I, Alexiou C. Iron Oxide Nanoparticles in Regenerative Medicine and Tissue Engineering. NANOMATERIALS 2021; 11:nano11092337. [PMID: 34578651 PMCID: PMC8466586 DOI: 10.3390/nano11092337] [Citation(s) in RCA: 43] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/23/2021] [Revised: 09/03/2021] [Accepted: 09/06/2021] [Indexed: 12/13/2022]
Abstract
In recent years, many promising nanotechnological approaches to biomedical research have been developed in order to increase implementation of regenerative medicine and tissue engineering in clinical practice. In the meantime, the use of nanomaterials for the regeneration of diseased or injured tissues is considered advantageous in most areas of medicine. In particular, for the treatment of cardiovascular, osteochondral and neurological defects, but also for the recovery of functions of other organs such as kidney, liver, pancreas, bladder, urethra and for wound healing, nanomaterials are increasingly being developed that serve as scaffolds, mimic the extracellular matrix and promote adhesion or differentiation of cells. This review focuses on the latest developments in regenerative medicine, in which iron oxide nanoparticles (IONPs) play a crucial role for tissue engineering and cell therapy. IONPs are not only enabling the use of non-invasive observation methods to monitor the therapy, but can also accelerate and enhance regeneration, either thanks to their inherent magnetic properties or by functionalization with bioactive or therapeutic compounds, such as drugs, enzymes and growth factors. In addition, the presence of magnetic fields can direct IONP-labeled cells specifically to the site of action or induce cell differentiation into a specific cell type through mechanotransduction.
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Zhang X, Yang J, Cheng B, Zhao S, Li Y, Kang H, Chen S. Magnetic nanocarriers as a therapeutic drug delivery strategy for promoting pain-related motor functions in a rat model of cartilage transplantation. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2021; 32:37. [PMID: 33787997 PMCID: PMC8012338 DOI: 10.1007/s10856-021-06508-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/21/2020] [Accepted: 03/09/2021] [Indexed: 05/11/2023]
Abstract
Cartilage is an avascular tissue with low cellularity and insufficient self-repair response. In clinical practice, a large articular cartilage defect is usually fixed by cartilage transplantation. Importantly, the fast repair process has been demanded postoperatively in the area between the host cartilage and the transplanted cartilage. In the past few years, magnetic nanoparticles have drawn great attention due to their biocompatible, biodegradable, and nontoxic properties. In addition, the nanoparticles can easily pass through the cell plasma membrane and increase the cellular uptake efficiency. Here, a therapeutic drug delivery strategy was proposed for cartilage repair. The prepared kartogenin (KGN)-conjugated magnetic nanocarriers (KGN@NCs) promoted the viability of chondrocytes in vitro. In a rat model of cartilage transplantation, intra-articularly delivered KGN@NCs generated cartilage with a flat surface and a high level of aggrecan in vivo. Notably, KGN@NCs were also capable of improving the pain-related motor functions. They promoted the motor functional parameters including the print area and intensity to restore to a normal level compared with the single KGN. Therefore, these therapeutic drug nanocarriers provided the potential for cartilage repair.
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Affiliation(s)
- Xingyu Zhang
- Department of Sports Medicine, Huashan Hospital, Fudan University, Shanghai, 200040, China
| | - Jianjun Yang
- Department of Orthopaedics, Tenth People's Hospital, Tongji University, Shanghai, 200072, China.
| | - Baochang Cheng
- State Key Laboratory of Molecular Engineering of Polymers, Fudan University, Shanghai, 200433, China
- Department of Macromolecular Science, Fudan University, Shanghai, 200433, China
| | - Shenli Zhao
- Department of Joint Surgery, Yangpu Hospital Affiliated to Tongji University, Shanghai, 200082, China
| | - Yao Li
- Department of Orthopaedics, Tenth People's Hospital, Nanjing Medical University, Shanghai, 200072, China
| | - Hui Kang
- Department of Orthopaedics, Tenth People's Hospital, Tongji University, Shanghai, 200072, China
| | - Shiyi Chen
- Department of Sports Medicine, Huashan Hospital, Fudan University, Shanghai, 200040, China.
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Mills DK, Luo Y, Elumalai A, Esteve S, Karnik S, Yao S. Creating Structured Hydrogel Microenvironments for Regulating Stem Cell Differentiation. Gels 2020; 6:gels6040047. [PMID: 33276682 PMCID: PMC7768466 DOI: 10.3390/gels6040047] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2020] [Revised: 10/09/2020] [Accepted: 10/19/2020] [Indexed: 12/12/2022] Open
Abstract
The development of distinct biomimetic microenvironments for regulating stem cell behavior and bioengineering human tissues and disease models requires a solid understanding of cell-substrate interactions, adhesion, and its role in directing cell behavior, and other physico-chemical cues that drive cell behavior. In the past decade, innovative developments in chemistry, materials science, microfabrication, and associated technologies have given us the ability to manipulate the stem cell microenvironment with greater precision and, further, to monitor effector impacts on stem cells, both spatially and temporally. The influence of biomaterials and the 3D microenvironment's physical and biochemical properties on mesenchymal stem cell proliferation, differentiation, and matrix production are the focus of this review chapter. Mechanisms and materials, principally hydrogel and hydrogel composites for bone and cartilage repair that create "cell-supportive" and "instructive" biomaterials, are emphasized. We begin by providing an overview of stem cells, their unique properties, and their challenges in regenerative medicine. An overview of current fabrication strategies for creating instructive substrates is then reviewed with a focused discussion of selected fabrication methods with an emphasis on bioprinting as a critical tool in creating novel stem cell-based biomaterials. We conclude with a critical assessment of the current state of the field and offer our view on the promises and potential pitfalls of the approaches discussed.
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Affiliation(s)
- David K. Mills
- School of Biological Sciences, Louisiana Tech University, Ruston, LA 71270, USA;
- Center for Biomedical Engineering and Rehabilitation Science, Louisiana Tech University, Ruston, LA 71270, USA;
- Correspondence:
| | - Yangyang Luo
- Molecular Sciences and Nanotechnology, Louisiana Tech University, Ruston, LA 71270, USA;
| | - Anusha Elumalai
- School of Biological Sciences, Louisiana Tech University, Ruston, LA 71270, USA;
- Center for Biomedical Engineering and Rehabilitation Science, Louisiana Tech University, Ruston, LA 71270, USA;
| | - Savannah Esteve
- Center for Biomedical Engineering and Rehabilitation Science, Louisiana Tech University, Ruston, LA 71270, USA;
| | - Sonali Karnik
- Department of Mechanical and Energy Engineering, IUPUI, Indianapolis, IN 46202, USA;
| | - Shaomian Yao
- Comparative Biomedical Sciences, Louisiana State University, Baton Rouge, LA 70803, USA;
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Henriksson HB, Papadimitriou N, Hingert D, Baranto A, Lindahl A, Brisby H. The Traceability of Mesenchymal Stromal Cells After Injection Into Degenerated Discs in Patients with Low Back Pain. Stem Cells Dev 2019; 28:1203-1211. [PMID: 31237488 DOI: 10.1089/scd.2019.0074] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Low back pain is a major health issue and one main cause to this condition is believed to be intervertebral disc (IVD) degeneration. Stem cell therapy for degenerated discs using mesenchymal stromal cells (MSCs) has been suggested. The aim of the study was to investigate the presence and distribution pattern of autologous MSCs transplanted into degenerated IVDs in patients and explanted posttransplantation. IVD tissues from four patients (41, 45, 47, and 47 years of age) participating in a clinical feasibility study on MSC transplantation to degenerative discs were investigated. Three patients decided to undergo fusion surgery at time points 8 months and one patient at 28 months posttransplantation. Pretransplantation, MSCs from bone marrow aspirate were isolated by centrifugation in FICOLL® test tubes and cultured (passage 1). Before transplantation, MSCs were labeled with 1 mg/mL iron sucrose (Venofer®) and 1 × 106 MSCs were transplanted into degenerated IVDs. At the time point of surgery, IVD tissues were collected. IVD tissue samples were fixated, embedded in paraffin, and sections prepared. IVD samples were stained with Prussian Blue, by which iron deposits are visualized and examined (light microscopy). Immunohistochemistry (IHC), including SOX9 (sex determining region Y box 9), Coll2A1 (collagen 2A1), and cell viability (TUNEL) were performed. Cells positive for iron deposits were observed in IVD tissues (3/4 patients). The cells/iron deposits were observed in clusters and/or as solitary cells in regions in IVD tissue samples [regions of interest (ROIs)]. By IHC, SOX9- and Coll2A1-positive cells were detected in the same regions as the detected cells/iron deposits. A few nonviable cells were detected by TUNEL assay in ROIs. Results demonstrated that MSCs, labeled with iron sucrose, transplanted into degenerated IVDs were detectable 8 months posttransplantation. The detected cellular activity indicates that MSCs have differentiated into chondrocyte-like cells and that the injected MSCs and/or their progeny have survived since the cells were found in large cluster and as solitary cells which were distributed at different parts of the IVD.
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Affiliation(s)
- Helena Barreto Henriksson
- Department of Orthopedics, Institute for Clinical Sciences, The Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden.,Department of Clinical Immunology and Transfusion Medicine, Sahlgrenska Hospital, Gothenburg, Sweden.,Department of Clinical Chemistry and Transfusion Medicine, Institute of Biomedicine, The Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Nikolaos Papadimitriou
- Department of Orthopedics, Institute for Clinical Sciences, The Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden.,Department of Orthopedics, Sahlgrenska University Hospital, Gothenburg, Sweden
| | - Daphne Hingert
- Department of Orthopedics, Institute for Clinical Sciences, The Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Adad Baranto
- Department of Orthopedics, Institute for Clinical Sciences, The Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden.,Department of Orthopedics, Sahlgrenska University Hospital, Gothenburg, Sweden
| | - Anders Lindahl
- Department of Clinical Chemistry and Transfusion Medicine, Institute of Biomedicine, The Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Helena Brisby
- Department of Orthopedics, Institute for Clinical Sciences, The Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden.,Department of Orthopedics, Sahlgrenska University Hospital, Gothenburg, Sweden
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Markides H, Newell KJ, Rudorf H, Ferreras LB, Dixon JE, Morris RH, Graves M, Kaggie J, Henson F, El Haj AJ. Ex vivo MRI cell tracking of autologous mesenchymal stromal cells in an ovine osteochondral defect model. Stem Cell Res Ther 2019; 10:25. [PMID: 30635066 PMCID: PMC6330448 DOI: 10.1186/s13287-018-1123-7] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2018] [Revised: 12/04/2018] [Accepted: 12/25/2018] [Indexed: 02/08/2023] Open
Abstract
BACKGROUND Osteochondral injuries represent a significant clinical problem requiring novel cell-based therapies to restore function of the damaged joint with the use of mesenchymal stromal cells (MSCs) leading research efforts. Pre-clinical studies are fundamental in translating such therapies; however, technologies to minimally invasively assess in vivo cell fate are currently limited. We investigate the potential of a MRI- (magnetic resonance imaging) and superparamagnetic iron oxide nanoparticle (SPION)-based technique to monitor cellular bio-distribution in an ovine osteochondral model of acute and chronic injuries. METHODS MSCs were isolated, expanded and labelled with Nanomag, a 250-nm SPION, and using a novel cell-penetrating technique, glycosaminoglycan-binding enhanced transduction (GET). MRI visibility thresholds, cellular toxicity and differentiation potential post-labelling were assessed in vitro. A single osteochondral defect was created in the medial femoral condyle in the left knee joint of each sheep with the contralateral joint serving as the control. Cells, either GET-Nanomag labelled or unlabelled, were delivered 1 week or 4.5 weeks later. Sheep were sacrificed 7 days post implantation and immediately MR imaged using a 0.2-T MRI scanner and validated on a 3-T MRI scanner prior to histological evaluation. RESULTS MRI data demonstrated a significant increase in MRI contrast as a result of GET-Nanomag labelling whilst cell viability, proliferation and differentiation capabilities were not affected. MRI results revealed evidence of implanted cells within the synovial joint of the injured leg of the chronic model only with no signs of cell localisation to the defect site in either model. This was validated histologically determining the location of implanted cells in the synovium. Evidence of engulfment of Nanomag-labelled cells by leukocytes is observed in the injured legs of the chronic model only. Finally, serum c-reactive protein (CRP) levels were measured by ELISA with no obvious increase in CRP levels observed as a result of P21-8R:Nanomag delivery. CONCLUSION This study has the potential to be a powerful translational tool with great implications in the clinical translation of stem cell-based therapies. Further, we have demonstrated the ability to obtain information linked to key biological events occurring post implantation, essential in designing therapies and selecting pre-clinical models.
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Affiliation(s)
- Hareklea Markides
- Institute of Science and Technology in Medicine, Guy Hilton Research Centre, Keele University, Thornburrow Drive, Stoke-on-Trent, ST4 7QB UK
- Department of Chemical Engineering, Healthcare Technologies Institute, Birmingham University, B15 2TT, Birmingham, UK
| | - Karin J. Newell
- Department of Surgery, University of Cambridge, Addenbrooke’s Hospital, Hills Road Cambridge, Cambridge, CB2 0QQ UK
| | - Heike Rudorf
- Department of Veterinary Medicine, University of Cambridge, Madingley Rd, Cambridge, CB3 0ES UK
| | - Lia Blokpoel Ferreras
- Centre for Biomolecular Sciences, The University of Nottingham, University Park, Nottingham, NG7 2RD UK
| | - James E. Dixon
- Centre for Biomolecular Sciences, The University of Nottingham, University Park, Nottingham, NG7 2RD UK
- School of Science and Technology, Nottingham Trent University, Clifton, Nottingham, NG11 8NF UK
| | - Robert H. Morris
- School of Science and Technology, Nottingham Trent University, Clifton, Nottingham, NG11 8NF UK
- Department of Radiology, University of Cambridge, Hills Rd, Cambridge, CB2 0QQ UK
| | - Martin Graves
- Department of Radiology, University of Cambridge, Hills Rd, Cambridge, CB2 0QQ UK
| | - Joshua Kaggie
- Department of Radiology, University of Cambridge, Hills Rd, Cambridge, CB2 0QQ UK
| | - Frances Henson
- Department of Surgery, University of Cambridge, Addenbrooke’s Hospital, Hills Road Cambridge, Cambridge, CB2 0QQ UK
- Department of Veterinary Medicine, University of Cambridge, Madingley Rd, Cambridge, CB3 0ES UK
| | - Alicia J. El Haj
- Institute of Science and Technology in Medicine, Guy Hilton Research Centre, Keele University, Thornburrow Drive, Stoke-on-Trent, ST4 7QB UK
- Department of Chemical Engineering, Healthcare Technologies Institute, Birmingham University, B15 2TT, Birmingham, UK
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Konyala HR, Mareddy AR, Puppala N, Venugopal Reddy N, Mallela MK, Susheela KP. Clinical, Radiological, and Histological Assessment of Magnetic Nanoparticles as Pulpotomy Medicament in Primary Molars. Int J Clin Pediatr Dent 2018; 11:283-287. [PMID: 30397371 PMCID: PMC6212663 DOI: 10.5005/jp-journals-10005-1527] [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] [Received: 06/28/2018] [Accepted: 07/17/2018] [Indexed: 11/23/2022] Open
Abstract
Aim and objectives Aim of the study was to evaluate the success of magnetic nanoparticles (MNPs) as pulpotomy medicament by clinical, radiologic, and histological assessment in primary molars. Materials and methods The sample included 30 primary molars from 25 children aged between 3 and 9 years requiring pulpotomy treatment. Pulpotomy was carried out with MNPs. The teeth were evaluated after a period of 3, 6, and 12 months clinically and with the aid of radiographs. After 1 year, 10 teeth were extracted for histological evaluation under field emission scanning electron microscope (FE-SEM; ZEISS, Model No. Supra 55vp). Results Of the samples, 98% showed clinical success rate with absence of pain, swelling, mobility, and abscess formation. After 3 months, 98% radiological success with absence of periodontal ligament widening, root resorption, and inter-radicular radiolucency was noted. Histological examination carried out under FE-SEM revealed a zone of odontoblastic proliferation at the interface between MNPs and odontoblastic layer of pulp and viable pulpal cells from the canal orifice till apical foramen. Conclusion Magnetic nanoparticles can be recommended as an effective pulpotomy medicament with hard tissue barrier formation and preservation of vitality of remaining radicular pulp. How to cite this article: Konyala HR, Mareddy AR, Puppala N, Reddy NV, Mallela MK, Susheela KP. Clinical, Radiological, and Histological Assessment of Magnetic Nanoparticles as Pulpotomy Medicament in Primary Molars. Int J Clin Pediatr Dent 2018;11(4):283-287.
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Affiliation(s)
- Harivinder R Konyala
- Reader, Department of Pedodontics, Mamata Dental College Khammam, Telangana, India
| | - Ajay R Mareddy
- Reader, Department of Pedodontics, Mamata Dental College Khammam, Telangana, India
| | - Niharika Puppala
- Senior Lecturer,Department of Pedodontics, Mamata Dental College Khammam, Telangana, India
| | - N Venugopal Reddy
- Professor, Department of Pedodontics, Mamata Dental College Khammam, Telangana, India
| | - Manoj K Mallela
- Professor, Department of Pedodontics, SVS Institute of Dental Sciences Mahabubnagar, Telangana, India
| | - Keerthi P Susheela
- Senior Lecturer,Department of Pedodontics, Malla Reddy Institute of Dental Sciences, Hyderabad, Telangana, India
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Harrison R, Lugo Leija HA, Strohbuecker S, Crutchley J, Marsh S, Denning C, El Haj A, Sottile V. Development and validation of broad-spectrum magnetic particle labelling processes for cell therapy manufacturing. Stem Cell Res Ther 2018; 9:248. [PMID: 30257709 PMCID: PMC6158868 DOI: 10.1186/s13287-018-0968-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2018] [Revised: 07/26/2018] [Accepted: 08/02/2018] [Indexed: 12/20/2022] Open
Abstract
Background Stem cells are increasingly seen as a solution for many health challenges for an ageing population. However, their potential benefits in the clinic are currently curtailed by technical challenges such as high cell dose requirements and point of care delivery, which pose sourcing and logistics challenges. Cell manufacturing solutions are currently in development to address the supply issue, and ancillary technologies such as nanoparticle-based labelling are being developed to improve stem cell delivery and enable post-treatment follow-up. Methods The application of magnetic particle (MP) labelling to potentially scalable cell manufacturing processes was investigated in a range of therapeutically relevant cells, including mesenchymal stromal cells (MSC), cardiomyocytes (CMC) and neural progenitor cells (ReN). The efficiency and the biological effect of particle labelling were analysed using fluorescent imaging and cellular assays. Results Flow cytometry and fluorescent microscopy confirmed efficient labelling of monolayer cultures. Viability was shown to be retained post labelling for all three cell types. MSC and CMC demonstrated higher tolerance to MP doses up to 100× the standard concentration. This approach was also successful for MP labelling of suspension cultures, demonstrating efficient MP uptake within 3 h, while cell viability was unaffected by this suspension labelling process. Furthermore, a procedure to enable the storing of MP-labelled cell populations to facilitate cold chain transport to the site of clinical use was investigated. When MP-labelled cells were stored in hypothermic conditions using HypoThermosol solution for 24 h, cell viability and differentiation potential were retained post storage for ReN, MSC and beating CMC. Conclusions Our results show that a generic MP labelling strategy was successfully developed for a range of clinically relevant cell populations, in both monolayer and suspension cultures. MP-labelled cell populations were able to undergo transient low-temperature storage whilst maintaining functional capacity in vitro. These results suggest that this MP labelling approach can be integrated into cell manufacturing and cold chain transport processes required for future cell therapy approaches. Electronic supplementary material The online version of this article (10.1186/s13287-018-0968-0) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Richard Harrison
- Wolfson Centre for Stem Cells, Tissue Engineering and Modelling (STEM), School of Medicine, The University of Nottingham, Nottingham, NG7 2RD, UK
| | - Hilda Anaid Lugo Leija
- Wolfson Centre for Stem Cells, Tissue Engineering and Modelling (STEM), School of Medicine, The University of Nottingham, Nottingham, NG7 2RD, UK
| | - Stephanie Strohbuecker
- Wolfson Centre for Stem Cells, Tissue Engineering and Modelling (STEM), School of Medicine, The University of Nottingham, Nottingham, NG7 2RD, UK
| | - James Crutchley
- Wolfson Centre for Stem Cells, Tissue Engineering and Modelling (STEM), School of Medicine, The University of Nottingham, Nottingham, NG7 2RD, UK
| | - Sarah Marsh
- Wolfson Centre for Stem Cells, Tissue Engineering and Modelling (STEM), School of Medicine, The University of Nottingham, Nottingham, NG7 2RD, UK
| | - Chris Denning
- Wolfson Centre for Stem Cells, Tissue Engineering and Modelling (STEM), School of Medicine, The University of Nottingham, Nottingham, NG7 2RD, UK
| | - Alicia El Haj
- Institute for Science and Technology in Medicine-Keele University, Stoke-on-Trent, ST4 7QB, UK
| | - Virginie Sottile
- Wolfson Centre for Stem Cells, Tissue Engineering and Modelling (STEM), School of Medicine, The University of Nottingham, Nottingham, NG7 2RD, UK.
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Chouhan D, Mehrotra S, Majumder O, Mandal BB. Magnetic Actuator Device Assisted Modulation of Cellular Behavior and Tuning of Drug Release on Silk Platform. ACS Biomater Sci Eng 2018; 5:92-105. [DOI: 10.1021/acsbiomaterials.8b00240] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Dimple Chouhan
- Biomaterial and Tissue Engineering Laboratory, Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati, Guwahati 781039, Assam, India
| | - Shreya Mehrotra
- Biomaterial and Tissue Engineering Laboratory, Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati, Guwahati 781039, Assam, India
| | - Omkar Majumder
- Biomaterial and Tissue Engineering Laboratory, Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati, Guwahati 781039, Assam, India
| | - Biman B. Mandal
- Biomaterial and Tissue Engineering Laboratory, Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati, Guwahati 781039, Assam, India
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11
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Rotherham M, Henstock JR, Qutachi O, El Haj AJ. Remote regulation of magnetic particle targeted Wnt signaling for bone tissue engineering. NANOMEDICINE-NANOTECHNOLOGY BIOLOGY AND MEDICINE 2018; 14:173-184. [DOI: 10.1016/j.nano.2017.09.008] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/08/2017] [Revised: 08/14/2017] [Accepted: 09/15/2017] [Indexed: 01/18/2023]
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12
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Green DW, Watson GS, Watson JA, Lee JM, Jung HS. Use of Tethered Hydrogel Microcoatings for Mesenchymal Stem Cell Equilibrium, Differentiation, and Self-Organization into Microtissues. ACTA ACUST UNITED AC 2017; 1:e1700116. [PMID: 32646160 DOI: 10.1002/adbi.201700116] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2017] [Revised: 09/08/2017] [Indexed: 01/29/2023]
Abstract
Therapeutic adult mesenchymal stem cells (MSCs) lose multipotency and multilineage specialization in culture and after transplantation due to the absence of complex biological architecture. Here, it is shown that a transient ultrathin covering of permeable biomaterial can be differentially formulated to either preserve multipotency or induce multidifferentiation. Accordingly, populations of single, spherical MSCs in suspended media with high selectivity and specificity can be coated. Assembly of single, double, and triple hydrogel layers at MSC membranes is initiated by first attaching MSC-specific immunoglobulins onto CD90 or Stro-1 receptors and UEA-1 and soybean lectins. A secondary biotinylated immunoglobulin is targeted for avidin binding, which becomes an attractor for biotinylated alginate or hyaluronate, which are subsequently stiffened and gelled, in situ around the entire cell surface. Alginate microcoatings permeated with mobile BMP-2-induced osteospecialized tissue, vascular endothelial growth factor (VEGF) induced microcapillary formation, while microcoatings, with selected basement membrane proteins, preserve the multipotent phenotype of MSCs, for continuing rounds of culture and directed specialization. Furthermore, forced packing of microcoated MSC populations creates prototypical tissue compartments: the coating partially simulating the extracellular matrix structures. Remarkably, microcoated MSC clusters show a tremendous simulation of a common embryological tissue transformation into the epithelium. Thus, confinement of free morphology exerts another control on tissue specialization and formation.
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Affiliation(s)
- David W Green
- Division in Anatomy and Developmental Biology, Department of Oral Biology, Oral Science Research Center, BK21 PLUS Project, Yonsei University College of Dentistry, Seoul, Korea.,Oral Biosciences, Faculty of Dentistry, The University of Hong Kong, Sai Ying Pun, Hong Kong, SAR
| | - Gregory S Watson
- School of Science and Engineering, University of the Sunshine Coast, Hervey Bay, QLD, 4655, Australia
| | - Jolanta A Watson
- School of Science and Engineering, University of the Sunshine Coast, Hervey Bay, QLD, 4655, Australia
| | - Jong-Min Lee
- Division in Anatomy and Developmental Biology, Department of Oral Biology, Oral Science Research Center, BK21 PLUS Project, Yonsei University College of Dentistry, Seoul, Korea
| | - Han-Sung Jung
- Division in Anatomy and Developmental Biology, Department of Oral Biology, Oral Science Research Center, BK21 PLUS Project, Yonsei University College of Dentistry, Seoul, Korea.,Oral Biosciences, Faculty of Dentistry, The University of Hong Kong, Sai Ying Pun, Hong Kong, SAR
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13
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Jeon S, Subbiah R, Bonaedy T, Van S, Park K, Yun K. Surface functionalized magnetic nanoparticles shift cell behavior with on/off magnetic fields. J Cell Physiol 2017; 233:1168-1178. [PMID: 28464242 DOI: 10.1002/jcp.25980] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2016] [Revised: 04/28/2017] [Accepted: 05/01/2017] [Indexed: 12/12/2022]
Abstract
Magnetic nanoparticles (MNPs) are used as contrast agents and targeted drug delivery systems (TDDS) due to their favorable size, surface charge, and magnetic properties. Unfortunately, the toxicity associated with MNPs limits their biological applications. Surface functionalization of MNPs with selective polymers alters the surface chemistry to impart better biocompatibility. We report the preparation of surface functionalized MNPs using iron oxide NPs (MNPs), poly (lactic-co-glycolic acid) (PLGA), and sodium alginate via co-precipitation, emulsification, and electro-spraying, respectively. The NPs are in the nanosize range and negatively charged. Morphological and structural analyses affirm the surface functionalized nanostructure of the NPs. The surface functionalized MNPs are biocompatible, and demonstrate enhanced intracellular delivery under an applied magnetic field (H), which evinces the targeting ability of MNPs. After NP treatment, the physico-mechanical properties of fibroblasts are decided by the selective MNP uptake under "on" or "off" magnetic field conditions. We envision potential use of biocompatible surface functionalized MNP for intracellular-, targeted-DDS, imaging, and for investigating cellular mechanics.
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Affiliation(s)
- Seongbeom Jeon
- Department of Bionanotechnology, Gachon University, Seongnam, South Korea
| | - Ramesh Subbiah
- Department of Bionanotechnology, Gachon University, Seongnam, South Korea.,Center for Biomaterials, Korea Institute of Science and Technology (KIST), Seoul, South Korea.,Department of Biomedical Engineering, Korea University of Science and Technology (UST), Daejeon, South Korea
| | - Taufik Bonaedy
- Center for Spintronics Research, Korea Institute of Science and Technology (KIST), Seoul, South Korea.,Department of Nanomaterials Science and Engineering, Korea University of Science and Technology (UST), Daejeon, South Korea
| | - Seyoung Van
- Center for Biomaterials, Korea Institute of Science and Technology (KIST), Seoul, South Korea.,Department of Biomedical Engineering, Korea University of Science and Technology (UST), Daejeon, South Korea
| | - Kwideok Park
- Center for Biomaterials, Korea Institute of Science and Technology (KIST), Seoul, South Korea.,Department of Biomedical Engineering, Korea University of Science and Technology (UST), Daejeon, South Korea
| | - Kyusik Yun
- Department of Bionanotechnology, Gachon University, Seongnam, South Korea
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14
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Indulekha S, Arunkumar P, Bahadur D, Srivastava R. Dual responsive magnetic composite nanogels for thermo-chemotherapy. Colloids Surf B Biointerfaces 2017; 155:304-313. [PMID: 28448900 DOI: 10.1016/j.colsurfb.2017.04.035] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2017] [Revised: 04/13/2017] [Accepted: 04/17/2017] [Indexed: 01/01/2023]
Abstract
With the onset of hyperthermia and their advantage in increasing vascular perfusion and permeability in the cancer milieu, thermo-responsive polymers have become an attractive candidate for designing therapeutic nano-vehicles for targeted on-demand delivery of bioactive agents. For this purpose, we developed a dual (thermo- and pH-) responsive nanotherapeutic composite system rendering a combinational therapy of hyperthermia mediated drug delivery. This composite system comprises of magnetic chitosan-g-PNVCL (MCP) polymeric nanogels loaded with anticancer drug, Doxorubicin (DOX). The size distribution and the stability of the MCP nanogels have been characterized using DLS and Zeta-potential studies. XRD and TG-DTA confirms the presence of magnetic nanoparticles loaded onto MCP nanogel. ICP-AES analysis was done to determine the amount of iron content in the MCP nanogels. The magnetic property of the MCP nanogels was estimated to be ∼37 emu/g using Vibrating Sample Magnetometer (VSM). The heating ability of MCP nanogels was calculated to be ∼204W/g for the concentration of 2mg/mL using time-dependent Specific Absorption Rate (SAR) method. Magnetic field induced thermo-responsive and pH responsive drug release studies were carried out and it was found that MCP nanogels have a good on-demand drug release properties. The DOX-MCP nanogels were evaluated for its in vitro killing efficacy of breast cancer cells MCF 7 and MDAMB 231 cells with synergistic effects of both hyperthermia and chemotherapy in presence of magnetic field at the concentration of 2mg/mL. Thus, MCP nanogels can be a potential dual modal on-demand hyperthermia mediated drug delivery platform for the breast cancer treatment.
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Affiliation(s)
- S Indulekha
- Department of Biosciences & Bioengineering, Indian Institute of Technology Bombay, Mumbai 400076, India
| | - P Arunkumar
- Centre for Research in Nanotechnology and Science, Indian Institute of Technology Bombay, Mumbai 400076, India
| | - D Bahadur
- Department of Metallurgical Engineering and Materials Science, Indian Institute of Technology Bombay, Mumbai 400076, India
| | - R Srivastava
- Department of Biosciences & Bioengineering, Indian Institute of Technology Bombay, Mumbai 400076, India.
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15
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Iyer SR, Xu S, Stains JP, Bennett CH, Lovering RM. Superparamagnetic Iron Oxide Nanoparticles in Musculoskeletal Biology. TISSUE ENGINEERING PART B-REVIEWS 2017; 23:373-385. [PMID: 27998240 DOI: 10.1089/ten.teb.2016.0437] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
The use of platelet-rich plasma and mesenchymal stem cells has garnered much attention in orthopedic medicine, focusing on the biological aspects of cell function. However, shortly after systemic delivery, or even a local injection, few of the transplanted stem cells or platelets remain at the target site. Improvement in delivery, and the ability to track and monitor injected cells, would greatly improve clinical translation. Nanoparticles can effectively and quickly label most cells in vitro, and evidence to date suggests such labeling does not compromise the proliferation or differentiation of cells. A specific type of nanoparticle, the superparamagnetic iron oxide nanoparticle (SPION), is already employed as a magnetic resonance imaging (MRI) contrast agent. SPIONs can be coupled with cells or bioactive molecules (antibodies, proteins, drugs, etc.) to form an injectable complex for in vivo use. The biocompatibility, magnetic properties, small size, and custom-made surface coatings also enable SPIONs to be used for delivering and monitoring of small molecules, drugs, and cells, specifically to muscle, bone, or cartilage. Because SPIONs consist of cores made of iron oxides, targeting of SPIONs to a specific muscle, bone, or joint in the body can be enhanced with the help of applied gradient magnetic fields. Moreover, MRI has a high sensitivity to SPIONs and can be used for noninvasive determination of successful delivery and monitoring distribution in vivo. Gaps remain in understanding how the physical and chemical properties of nanomaterials affect biological systems. Nonetheless, SPIONs hold great promise for regenerative medicine, and progress is being made rapidly toward clinical applications in orthopedic medicine.
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Affiliation(s)
- Shama R Iyer
- 1 Department of Orthopaedics, University of Maryland School of Medicine , Baltimore, Maryland
| | - Su Xu
- 2 Department of Diagnostic Radiology and Nuclear Medicine, University of Maryland School of Medicine , Baltimore, Maryland
| | - Joseph P Stains
- 1 Department of Orthopaedics, University of Maryland School of Medicine , Baltimore, Maryland
| | - Craig H Bennett
- 1 Department of Orthopaedics, University of Maryland School of Medicine , Baltimore, Maryland
| | - Richard M Lovering
- 1 Department of Orthopaedics, University of Maryland School of Medicine , Baltimore, Maryland.,3 Department of Physiology, University of Maryland School of Medicine , Baltimore, Maryland
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16
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Evaluation of Magnetic Nanoparticle-Labeled Chondrocytes Cultivated on a Type II Collagen-Chitosan/Poly(Lactic-co-Glycolic) Acid Biphasic Scaffold. Int J Mol Sci 2017; 18:ijms18010087. [PMID: 28054960 PMCID: PMC5297721 DOI: 10.3390/ijms18010087] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2016] [Revised: 12/26/2016] [Accepted: 12/29/2016] [Indexed: 02/05/2023] Open
Abstract
Chondral or osteochondral defects are still controversial problems in orthopedics. Here, chondrocytes labeled with magnetic nanoparticles were cultivated on a biphasic, type II collagen-chitosan/poly(lactic-co-glycolic acid) scaffold in an attempt to develop cultures with trackable cells exhibiting growth, differentiation, and regeneration. Rabbit chondrocytes were labeled with magnetic nanoparticles and characterized by scanning electron microscopy (SEM), transmission electron (TEM) microscopy, and gene and protein expression analyses. The experimental results showed that the magnetic nanoparticles did not affect the phenotype of chondrocytes after cell labeling, nor were protein and gene expression affected. The biphasic type II collagen-chitosan/poly(lactic-co-glycolic) acid scaffold was characterized by SEM, and labeled chondrocytes showed a homogeneous distribution throughout the scaffold after cultivation onto the polymer. Cellular phenotype remained unaltered but with increased gene expression of type II collagen and aggrecan, as indicated by cell staining, indicating chondrogenesis. Decreased SRY-related high mobility group-box gene (Sox-9) levels of cultured chondrocytes indicated that differentiation was associated with osteogenesis. These results are encouraging for the development of techniques for trackable cartilage regeneration and osteochondral defect repair which may be applied in vivo and, eventually, in clinical trials.
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17
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Moise S, Céspedes E, Soukup D, Byrne JM, El Haj AJ, Telling ND. The cellular magnetic response and biocompatibility of biogenic zinc- and cobalt-doped magnetite nanoparticles. Sci Rep 2017; 7:39922. [PMID: 28045082 PMCID: PMC5206667 DOI: 10.1038/srep39922] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2016] [Accepted: 11/28/2016] [Indexed: 12/18/2022] Open
Abstract
The magnetic moment and anisotropy of magnetite nanoparticles can be optimised by doping with transition metal cations, enabling their properties to be tuned for different biomedical applications. In this study, we assessed the suitability of bacterially synthesized zinc- and cobalt-doped magnetite nanoparticles for biomedical applications. To do this we measured cellular viability and activity in primary human bone marrow-derived mesenchymal stem cells and human osteosarcoma-derived cells. Using AC susceptibility we studied doping induced changes in the magnetic response of the nanoparticles both as stable aqueous suspensions and when associated with cells. Our findings show that the magnetic response of the particles was altered after cellular interaction with a reduction in their mobility. In particular, the strongest AC susceptibility signal measured in vitro was from cells containing high-moment zinc-doped particles, whilst no signal was observed in cells containing the high-anisotropy cobalt-doped particles. For both particle types we found that the moderate dopant levels required for optimum magnetic properties did not alter their cytotoxicity or affect osteogenic differentiation of the stem cells. Thus, despite the known cytotoxicity of cobalt and zinc ions, these results suggest that iron oxide nanoparticles can be doped to sufficiently tailor their magnetic properties without compromising cellular biocompatibility.
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Affiliation(s)
- Sandhya Moise
- School of Pharmacy, University of Nottingham, University Park, Nottingham NG7 2RD, United Kingdom
- Institute for Science and Technology in Medicine (ISTM), Keele University, Stoke-on-Trent ST4 7QB, United Kingdom
| | - Eva Céspedes
- Institute for Science and Technology in Medicine (ISTM), Keele University, Stoke-on-Trent ST4 7QB, United Kingdom
- IMDEA Nanociencia, Ciudad Universitaria de Cantoblanco, Madrid 28049, Spain
| | - Dalibor Soukup
- Institute for Science and Technology in Medicine (ISTM), Keele University, Stoke-on-Trent ST4 7QB, United Kingdom
| | - James M. Byrne
- Centre for Applied Geoscience (ZAG), University of Tuebingen, Tuebingen 72076, Germany
| | - Alicia J. El Haj
- Institute for Science and Technology in Medicine (ISTM), Keele University, Stoke-on-Trent ST4 7QB, United Kingdom
| | - Neil D. Telling
- Institute for Science and Technology in Medicine (ISTM), Keele University, Stoke-on-Trent ST4 7QB, United Kingdom
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18
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Energy-triggered drug release from polymer nanoparticles for orthopedic applications. Ther Deliv 2017; 8:5-14. [DOI: 10.4155/tde-2016-0066] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Sequestra, present in many cancers and orthopedic infections, provide a safe harbor for the development of drug resistance. In the face of burgeoning drug resistance, the importance of nanoscale, microenvironment-triggered drug delivery cannot be overestimated. Such strategies may preserve pharmaceutical efficacy and significantly alter the etiology of many orthopedic diseases. Although temperature-, pH- and redox-responsive nanoparticle-based systems have been extensively studied, local drug delivery from polymeric nanoparticles can be triggered by a variety of energy forms. This review offers an overview of the state of the field as well as a perspective on the safety and efficacy of ultrasound, hyperthermia and radio frequency-triggered internal delivery systems in a variety of applications.
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19
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Harrison R, Markides H, Morris RH, Richards P, El Haj AJ, Sottile V. Autonomous magnetic labelling of functional mesenchymal stem cells for improved traceability and spatial control in cell therapy applications. J Tissue Eng Regen Med 2016; 11:2333-2348. [PMID: 27151571 PMCID: PMC5573958 DOI: 10.1002/term.2133] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2015] [Revised: 11/13/2015] [Accepted: 12/10/2015] [Indexed: 12/11/2022]
Abstract
Mesenchymal stem cells (MSCs) represent a valuable resource for regenerative medicine treatments for orthopaedic repair and beyond. Following developments in isolation, expansion and differentiation protocols, efforts to promote clinical translation of emerging cellular strategies now seek to improve cell delivery and targeting. This study shows efficient live MSC labelling using silica‐coated magnetic particles (MPs), which enables 3D tracking and guidance of stem cells. A procedure developed for the efficient and unassisted particle uptake was shown to support MSC viability and integrity, while surface marker expression and MSC differentiation capability were also maintained. In vitro, MSCs showed a progressive decrease in labelling over increasing culture time, which appeared to be linked to the dilution effect of cell division, rather than to particle release, and did not lead to detectable secondary particle uptake. Labelled MSC populations demonstrated magnetic responsiveness in vitro through directed migration in culture and, when seeded onto a scaffold, supporting MP‐based approaches to cell targeting. The potential of these silica‐coated MPs for MRI cell tracking of MSC populations was validated in 2D and in a cartilage repair model following cell delivery. These results highlight silica‐coated magnetic particles as a simple, safe and effective resource to enhance MSC targeting for therapeutic applications and improve patient outcomes. © 2016 The Authors Journal of Tissue Engineering and Regenerative Medicine Published by John Wiley & Sons Ltd.
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Affiliation(s)
- Richard Harrison
- Wolfson Centre for Stem Cells, Tissue Engineering and Modelling (STEM), School of Medicine, University of Nottingham, UK
| | - Hareklea Markides
- Institute of Science and Technology in Medicine, Keele University, UK
| | - Robert H Morris
- School of Science and Technology, Nottingham Trent University, UK
| | - Paula Richards
- Institute of Science and Technology in Medicine, Keele University, UK
| | - Alicia J El Haj
- Institute of Science and Technology in Medicine, Keele University, UK
| | - Virginie Sottile
- Wolfson Centre for Stem Cells, Tissue Engineering and Modelling (STEM), School of Medicine, University of Nottingham, UK
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20
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Gonçalves AI, Rodrigues MT, Carvalho PP, Bañobre-López M, Paz E, Freitas P, Gomes ME. Exploring the Potential of Starch/Polycaprolactone Aligned Magnetic Responsive Scaffolds for Tendon Regeneration. Adv Healthc Mater 2016; 5:213-22. [PMID: 26606262 DOI: 10.1002/adhm.201500623] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2015] [Indexed: 12/22/2022]
Abstract
The application of magnetic nanoparticles (MNPs) in tissue engineering (TE) approaches opens several new research possibilities in this field, enabling a new generation of multifunctional constructs for tissue regeneration. This study describes the development of sophisticated magnetic polymer scaffolds with aligned structural features aimed at applications in tendon tissue engineering (TTE). Tissue engineering magnetic scaffolds are prepared by incorporating iron oxide MNPs into a 3D structure of aligned SPCL (starch and polycaprolactone) fibers fabricated by rapid prototyping (RP) technology. The 3D architecture, composition, and magnetic properties are characterized. Furthermore, the effect of an externally applied magnetic field is investigated on the tenogenic differentiation of adipose stem cells (ASCs) cultured onto the developed magnetic scaffolds, demonstrating that ASCs undergo tenogenic differentiation synthesizing a Tenascin C and Collagen type I rich matrix under magneto-stimulation conditions. Finally, the developed magnetic scaffolds were implanted in an ectopic rat model, evidencing good biocompatibility and integration within the surrounding tissues. Together, these results suggest that the effect of the magnetic aligned scaffolds structure combined with magnetic stimulation has a significant potential to impact the field of tendon tissue engineering toward the development of more efficient regeneration therapies.
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Affiliation(s)
- Ana I. Gonçalves
- 3B's Research Group-Biomaterials, Biodegradables and Biomimetics; University of Minho; Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine; AvePark-Zona Industrial da Gandra; 4805-017 Barco GMR Guimarães Portugal
- ICVS/3B's-PT Government Associate Laboratory; 4710-057 Braga/Guimarães Portugal
| | - Márcia T. Rodrigues
- 3B's Research Group-Biomaterials, Biodegradables and Biomimetics; University of Minho; Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine; AvePark-Zona Industrial da Gandra; 4805-017 Barco GMR Guimarães Portugal
- ICVS/3B's-PT Government Associate Laboratory; 4710-057 Braga/Guimarães Portugal
| | - Pedro P. Carvalho
- 3B's Research Group-Biomaterials, Biodegradables and Biomimetics; University of Minho; Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine; AvePark-Zona Industrial da Gandra; 4805-017 Barco GMR Guimarães Portugal
- ICVS/3B's-PT Government Associate Laboratory; 4710-057 Braga/Guimarães Portugal
| | - Manuel Bañobre-López
- INL-International Iberian Nanotechnology Laboratory; Av. Mestre José Veiga s/n; 4715-330 Braga Portugal
| | - Elvira Paz
- INL-International Iberian Nanotechnology Laboratory; Av. Mestre José Veiga s/n; 4715-330 Braga Portugal
| | - Paulo Freitas
- INL-International Iberian Nanotechnology Laboratory; Av. Mestre José Veiga s/n; 4715-330 Braga Portugal
| | - Manuela E. Gomes
- 3B's Research Group-Biomaterials, Biodegradables and Biomimetics; University of Minho; Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine; AvePark-Zona Industrial da Gandra; 4805-017 Barco GMR Guimarães Portugal
- ICVS/3B's-PT Government Associate Laboratory; 4710-057 Braga/Guimarães Portugal
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21
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Noh MJ, Lee KH. Orthopedic cellular therapy: An overview with focus on clinical trials. World J Orthop 2015; 6:754-61. [PMID: 26601056 PMCID: PMC4644862 DOI: 10.5312/wjo.v6.i10.754] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/22/2015] [Revised: 08/22/2015] [Accepted: 09/25/2015] [Indexed: 02/06/2023] Open
Abstract
In this editorial, the authors tried to evaluate the present state of cellular therapy in orthopedic field. The topics the authors try to cover include not only the clinical trials but the various research areas as well. Both the target diseases for cellular therapy and the target cells were reviewed. New methods to activate the cells were interesting to review. Most advanced clinical trials were also included because several of them have advanced to phase III clinical trials. In the orthopedic field, there are many diseases with a definite treatment gap at this time. Because cellular therapies can regenerate damaged tissues, there is a possibility for cellular therapies to become disease modifying drugs. It is not clear whether cellular therapies will become the standard of care in any of the orthopedic disorders, however the amount of research being performed and the number of clinical trials that are on-going make the authors believe that cellular therapies will become important treatment modalities within several years.
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22
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Overcoming translational challenges - The delivery of mechanical stimuli in vivo. Int J Biochem Cell Biol 2015; 69:162-72. [PMID: 26482595 DOI: 10.1016/j.biocel.2015.10.011] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2015] [Revised: 10/11/2015] [Accepted: 10/12/2015] [Indexed: 01/22/2023]
Abstract
Despite major medical advances, non-union bone fractures and skeletal defects continue to place significant burden on the patient, the clinicians and the healthcare system as a whole. Current bone substitute approaches are still limited in effectiveness and to date no adequate bone substitute material has been developed for routine clinical application. Tissue engineering presents a novel approach to tackling this clinical burden and developing an acceptable solution for the treatment of skeletal defects. Over the past three decades the field has evolved to appreciate the key biological, material and physical parameters influencing the development of a cell-based tissue engineered therapy and to create associated technologies to exploit such parameters. In recent years a number of therapies have started progressing along the pre-clinical pipeline to build a case for regulatory approval and ultimately clinical adoption. However, little emphasis has been given to the translational challenges faced when moving from "bench-to-bedside". One particular challenge lies in the delivery of functional mechanical stimuli to implanted cell populations to activate and promote osteogenic activities. This review introduces novel bio-magnetic approaches to overcoming this challenge.
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23
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Papadimitriou N, Li S, Barreto Henriksson H. Iron Sucrose-Labeled Human Mesenchymal Stem Cells: In Vitro Multilineage Capability and In Vivo Traceability in a Lapine Xenotransplantation Model. Stem Cells Dev 2015; 24:2403-12. [DOI: 10.1089/scd.2015.0140] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Affiliation(s)
- Nikolaos Papadimitriou
- Department of Orthopedics, Institute of Clinical Sciences, Sahlgrenska Academy, Gothenburg University, Gothenburg, Sweden
- Department of Orthopedics, Sahlgrenska University Hospital, Gothenburg, Sweden
| | - Susann Li
- Department of Clinical Chemistry and Transfusion Medicine, Institute of Biomedicine, Sahlgrenska University Hospital, Gothenburg University, Gothenburg, Sweden
| | - Helena Barreto Henriksson
- Department of Orthopedics, Institute of Clinical Sciences, Sahlgrenska Academy, Gothenburg University, Gothenburg, Sweden
- Department of Orthopedics, Sahlgrenska University Hospital, Gothenburg, Sweden
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24
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Mazaheri M, Eslahi N, Ordikhani F, Tamjid E, Simchi A. Nanomedicine applications in orthopedic medicine: state of the art. Int J Nanomedicine 2015; 10:6039-53. [PMID: 26451110 PMCID: PMC4592034 DOI: 10.2147/ijn.s73737] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023] Open
Abstract
The technological and clinical need for orthopedic replacement materials has led to significant advances in the field of nanomedicine, which embraces the breadth of nanotechnology from pharmacological agents and surface modification through to regulation and toxicology. A variety of nanostructures with unique chemical, physical, and biological properties have been engineered to improve the functionality and reliability of implantable medical devices. However, mimicking living bone tissue is still a challenge. The scope of this review is to highlight the most recent accomplishments and trends in designing nanomaterials and their applications in orthopedics with an outline on future directions and challenges.
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Affiliation(s)
- Mozhdeh Mazaheri
- Department of Materials Science and Engineering, Sharif University of Technology, Tehran, Iran
| | - Niloofar Eslahi
- Department of Materials Science and Engineering, Sharif University of Technology, Tehran, Iran
| | - Farideh Ordikhani
- Department of Materials Science and Engineering, Sharif University of Technology, Tehran, Iran
| | - Elnaz Tamjid
- Department of Nanobiotechnology, Faculty of Biological Sciences, Tarbiat Modares University, Tehran, Iran
| | - Abdolreza Simchi
- Department of Materials Science and Engineering, Sharif University of Technology, Tehran, Iran ; Institute for Nanoscience and Nanotechnology, Sharif University of Technology, Tehran, Iran
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25
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Gil S, Correia CR, Mano JF. Magnetically labeled cells with surface-modified fe3 o4 spherical and rod-shaped magnetic nanoparticles for tissue engineering applications. Adv Healthc Mater 2015; 4:883-91. [PMID: 25641785 DOI: 10.1002/adhm.201400611] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2014] [Revised: 12/18/2014] [Indexed: 02/03/2023]
Abstract
Magnetically targeted cells with internalized magnetic nanoparticles (MNPs) could allow the success of cell transplantation and cell-based therapies, overcoming low cell retention that occurs when delivering cells by intravenous or local injection. Upon magnetization, these cells could then accumulate and stimulate the regeneration of the tissue in situ. Magnetic targeting of cells requires a detailed knowledge between interactions of engineered nanomaterials and cells, in particular the influence of shape and surface functionalization of MNPs. For the first time, cellular internalization of amino surface-modified iron oxide nanoparticles of two different shapes (nanospheres or nanorods) is studied. MNPs show high cellular uptake and labeled cells could exhibit a strong reaction with external magnetic fields. Compared to nanorods, nanospheres show better internalization efficiency, and labeled cells exhibit strong transportation reaction with external magnetic fields. Contiguous viable cell-sheets are developed by magnetic-force-based tissue engineering. The results confirm that the developed magnetic-responsive nano-biomaterials have potential applicability in tissue engineering or cellular therapies.
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Affiliation(s)
- Sara Gil
- 3B's Research Group-Biomaterials, Biodegradables and Biomimetics, AvePark, Zona Industrial da Gandra; S. Cláudio do Barco; 4806-909 Caldas das, Taipas Guimarães Portugal
- ICVS/3B's-PT Government Associate Laboratory; Braga/Guimarães Portugal
| | - Clara R. Correia
- 3B's Research Group-Biomaterials, Biodegradables and Biomimetics, AvePark, Zona Industrial da Gandra; S. Cláudio do Barco; 4806-909 Caldas das, Taipas Guimarães Portugal
- ICVS/3B's-PT Government Associate Laboratory; Braga/Guimarães Portugal
| | - João F. Mano
- 3B's Research Group-Biomaterials, Biodegradables and Biomimetics, AvePark, Zona Industrial da Gandra; S. Cláudio do Barco; 4806-909 Caldas das, Taipas Guimarães Portugal
- ICVS/3B's-PT Government Associate Laboratory; Braga/Guimarães Portugal
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Papadimitriou N, Thorfve A, Brantsing C, Junevik K, Baranto A, Barreto Henriksson H. Cell Viability and Chondrogenic Differentiation Capability of Human Mesenchymal Stem Cells After Iron Labeling with Iron Sucrose. Stem Cells Dev 2014; 23:2568-80. [DOI: 10.1089/scd.2014.0153] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Affiliation(s)
- Nikolaos Papadimitriou
- Department of Orthopaedics, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
- Department of Orthopaedics, Sahlgrenska University Hospital, Gothenburg, Sweden
| | - Anna Thorfve
- Department for Biomaterials, Institute of Clinical Sciences, Sahlgrenska Academy, Gothenburg University of Gothenburg, Gothenburg, Sweden
| | - Camilla Brantsing
- Department of Clinical Chemistry and Transfusion Medicine, Institute of Biomedicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Katarina Junevik
- Department of Clinical Chemistry and Transfusion Medicine, Institute of Biomedicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Adad Baranto
- Department of Orthopaedics, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
- Department of Orthopaedics, Sahlgrenska University Hospital, Gothenburg, Sweden
| | - Helena Barreto Henriksson
- Department of Orthopaedics, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
- Department of Orthopaedics, Sahlgrenska University Hospital, Gothenburg, Sweden
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Henstock JR, Rotherham M, Rashidi H, Shakesheff KM, El Haj AJ. Remotely Activated Mechanotransduction via Magnetic Nanoparticles Promotes Mineralization Synergistically With Bone Morphogenetic Protein 2: Applications for Injectable Cell Therapy. Stem Cells Transl Med 2014; 3:1363-74. [PMID: 25246698 DOI: 10.5966/sctm.2014-0017] [Citation(s) in RCA: 68] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
Bone requires dynamic mechanical stimulation to form and maintain functional tissue, yet mechanical stimuli are often lacking in many therapeutic approaches for bone regeneration. Magnetic nanoparticles provide a method for delivering these stimuli by directly targeting cell-surface mechanosensors and transducing forces from an external magnetic field, resulting in remotely controllable mechanotransduction. In this investigation, functionalized magnetic nanoparticles were attached to either the mechanically gated TREK1 K+ channel or the (integrin) RGD-binding domains of human mesenchymal stem cells. These cells were microinjected into an ex vivo chick fetal femur (embryonic day 11) that was cultured organotypically in vitro as a model for endochondral bone formation. An oscillating 25-mT magnetic field delivering a force of 4 pN per nanoparticle directly against the mechanoreceptor induced mechanotransduction in the injected mesenchymal stem cells. It was found that cells that received mechanical stimuli via the nanoparticles mineralized the epiphyseal injection site more extensively than unlabeled control cells. The nanoparticle-tagged cells were also seeded into collagen hydrogels to evaluate osteogenesis in tissue-engineered constructs: in this case, inducing mechanotransduction by targeting TREK1 resulted in a 2.4-fold increase in mineralization and significant increases in matrix density. In both models, the combination of mechanical stimulation and sustained release of bone morphogenetic protein 2 (BMP2) from polymer microspheres showed a significant additive effect on mineralization, increasing the effectiveness of BMP2 delivery and demonstrating that nanoparticle-mediated mechanotransduction can be used synergistically with pharmacological approaches for orthopedic tissue engineering to maximize bone formation.
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Affiliation(s)
- James R Henstock
- Institute for Science and Technology in Medicine, Keele University, Stoke-on-Trent, United Kingdom; School of Pharmacy, University of Nottingham, Nottingham, United Kingdom
| | - Michael Rotherham
- Institute for Science and Technology in Medicine, Keele University, Stoke-on-Trent, United Kingdom; School of Pharmacy, University of Nottingham, Nottingham, United Kingdom
| | - Hassan Rashidi
- Institute for Science and Technology in Medicine, Keele University, Stoke-on-Trent, United Kingdom; School of Pharmacy, University of Nottingham, Nottingham, United Kingdom
| | - Kevin M Shakesheff
- Institute for Science and Technology in Medicine, Keele University, Stoke-on-Trent, United Kingdom; School of Pharmacy, University of Nottingham, Nottingham, United Kingdom
| | - Alicia J El Haj
- Institute for Science and Technology in Medicine, Keele University, Stoke-on-Trent, United Kingdom; School of Pharmacy, University of Nottingham, Nottingham, United Kingdom
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28
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Santo VE, Rodrigues MT, Gomes ME. Contributions and future perspectives on the use of magnetic nanoparticles as diagnostic and therapeutic tools in the field of regenerative medicine. Expert Rev Mol Diagn 2014; 13:553-66. [DOI: 10.1586/14737159.2013.819169] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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29
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Hu B, Dobson J, El Haj AJ. Control of smooth muscle α-actin (SMA) up-regulation in HBMSCs using remote magnetic particle mechano-activation. NANOMEDICINE-NANOTECHNOLOGY BIOLOGY AND MEDICINE 2014; 10:45-55. [DOI: 10.1016/j.nano.2013.06.014] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/18/2012] [Revised: 06/21/2013] [Accepted: 06/30/2013] [Indexed: 12/21/2022]
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30
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Fan J, Tan Y, Jie L, Wu X, Yu R, Zhang M. Biological activity and magnetic resonance imaging of superparamagnetic iron oxide nanoparticles-labeled adipose-derived stem cells. Stem Cell Res Ther 2013; 4:44. [PMID: 23618360 PMCID: PMC3706947 DOI: 10.1186/scrt191] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2012] [Accepted: 04/12/2013] [Indexed: 12/11/2022] Open
Abstract
Introduction No comparative study of adipose-derived stem cells (ADSCs) and bone marrow mesenchymal stem cells (BMSCs) by using superparamagnetic iron oxide nanoparticles (SPIOs)-labeling and magnetic resonance imaging (MRI) has been performed. Methods We studied the biological activity and MRI of ADSCs by labeling them with SPIOs and comparing them with BMSCs. After incubating the cells in culture medium with different levels of SPIOs (control group: 0 μg/ml; Groups 1 to 3: 25, 50, and 100 μg/ml) for 24 hours, we compared ADSCs with BMSCs in terms of intracellular iron content, labeling efficiency, and cell viability. Stem cells in the culture medium containing 50 μg/ml SPIOs were induced into osteoblasts and fat cells. Adipogenic and osteogenic differentiation potentials were compared. R2* values of MRI in vitro were compared. Results The results showed that labeling efficiency was highest in Group 2. Intracellular iron content and R2* values increased with increasing concentrations of SPIOs, whereas cell viability decreased with increasing concentrations of SPIOs, and adipogenic and osteogenic differentiation potentials decreased. However, we found no significant difference between the two kinds of cells for any of these indexes. Conclusions ADSCs can be labeled and traced as easily as BMSCs in vitro. Given their abundance and higher proliferative capacity, as was previously shown, ADSCs may be better suited to stem cell therapy than are BMSCs.
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Henriksson HB, Lindahl A, Skioldebrand E, Junevik K, Tängemo C, Mattsson J, Brisby H. Similar cellular migration patterns from niches in intervertebral disc and in knee-joint regions detected by in situ labeling: an experimental study in the New Zealand white rabbit. Stem Cell Res Ther 2013; 4:104. [PMID: 24004687 PMCID: PMC3854713 DOI: 10.1186/scrt315] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2013] [Revised: 08/12/2013] [Accepted: 08/29/2013] [Indexed: 12/14/2022] Open
Abstract
INTRODUCTION Potential stem cell niches (SNs) were recently reported in intervertebral discs (IVDs) and knee joints (KJs) in different mammals (located adjacent to the epiphyseal plate; EP). The aim here was to examine further possible cellular migration and migration directions of cells originating from niches possibly involved in regeneration of cartilaginous tissues in the IVD and in the KJ regions in adult mammals. METHODS In total, 33 rabbits were used in studies A through C. A. IVD cells were sorted; fluorescence-activated cell sorting (FACS) by size (forward scatter; ≤ 10 μm or >10 μm or GDF5+ cells (anti-GDF5 antibody). Sorted cells, labeled with cell tracer (carboxyfluorescein-diacetate-succinimidyl ester; CDFA-SE) were applied on IVD explants in vitro. Migrating cells/distance was evaluated by fluorescence- and confocal-microscopy (FC). B. DNA labeling was performed with BrdU (oral administration). Animals were killed (14 to 56 days), KJs collected, and BrdU+ cells visualized with immunohistochemistry (IHC)/anti-BrdU antibody in SN and articular cartilage (AC). C. Cell tracer: (Fe-nanoparticles: Endorem) were injected into SNs of IVDs (LI-LV) and KJs (tibia). Animals were killed after 2 to 6 weeks. Fe-labeled cells were traced by ferric-iron staining (Prussian blue reaction; Mallory method). RESULTS A. GDF5+ cells and ≤ 10-μm cells displayed the best migration capability in IVD explants. GDF5+ cells were detected at a tissue depth of 1,300 μm (16 days). B. BrdU+ cells were observed in early time points in niches of KJs, and at later time points in AC, indicating a gradual migration of cells. C. Fe+ cells were detected in IVDs; in annulus fibrosus (AF) in 11 of 12 animals and in nucleus pulposus (NP) in two of 12 animals. In AC (tibia), Fe+ cells were detected in six of 12 animals. In the potential migration route (PMR), from niches toward the IVD, Fe+ cells (three of 12 animals) and in PMR toward AC (KJs) (six of 12 animals) were detected. CONCLUSIONS Results indicate similar cellular migration patterns in cartilage regions (IVD and KJs) with migration from stem cell niche areas into the mature cartilaginous tissues of both the KJs and the IVD. These findings of a cellular migration pattern in mature cartilage are of interest from tissue-repair and engineering perspectives.
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Affiliation(s)
- Helena Barreto Henriksson
- Department of Orthopaedics, Institute of Clinical Sciences, Sahlgrenska University Hospital, Gothenburg University, 413 45 Gothenburg, Sweden
| | - Anders Lindahl
- Department of Clinical Chemistry and Transfusion Medicine, Institute of Biomedicine, Sahlgrenska University Hospital, Gothenburg, Sweden
| | - Eva Skioldebrand
- Department of Clinical Chemistry and Transfusion Medicine, Institute of Biomedicine, Sahlgrenska University Hospital, Gothenburg, Sweden
| | - Katarina Junevik
- Department of Clinical Chemistry and Transfusion Medicine, Institute of Biomedicine, Sahlgrenska University Hospital, Gothenburg, Sweden
| | - Carolina Tängemo
- Centre for Cellular Imaging, the Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Johan Mattsson
- Department of Microbiology and Immunology, Institute of Biomedicine, Sahlgrenska University Hospital, Gothenburg, Sweden
| | - Helena Brisby
- Department of Orthopaedics, Institute of Clinical Sciences, Sahlgrenska University Hospital, Gothenburg University, 413 45 Gothenburg, Sweden
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