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Rodríguez-Méndez I, Fernández-Gutiérrez M, Rodríguez-Navarrete A, Rosales-Ibáñez R, Benito-Garzón L, Vázquez-Lasa B, San Román J. Bioactive Sr(II)/Chitosan/Poly(ε-caprolactone) Scaffolds for Craniofacial Tissue Regeneration. In Vitro and In Vivo Behavior. Polymers (Basel) 2018; 10:E279. [PMID: 30966314 PMCID: PMC6415099 DOI: 10.3390/polym10030279] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2018] [Revised: 02/23/2018] [Accepted: 03/02/2018] [Indexed: 01/16/2023] Open
Abstract
In craniofacial tissue regeneration, the current gold standard treatment is autologous bone grafting, however, it presents some disadvantages. Although new alternatives have emerged there is still an urgent demand of biodegradable scaffolds to act as extracellular matrix in the regeneration process. A potentially useful element in bone regeneration is strontium. It is known to promote stimulation of osteoblasts while inhibiting osteoclasts resorption, leading to neoformed bone. The present paper reports the preparation and characterization of strontium (Sr) containing hybrid scaffolds formed by a matrix of ionically cross-linked chitosan and microparticles of poly(ε-caprolactone) (PCL). These scaffolds of relatively facile fabrication were seeded with osteoblast-like cells (MG-63) and human bone marrow mesenchymal stem cells (hBMSCs) for application in craniofacial tissue regeneration. Membrane scaffolds were prepared using chitosan:PCL ratios of 1:2 and 1:1 and 5 wt % Sr salts. Characterization was performed addressing physico-chemical properties, swelling behavior, in vitro biological performance and in vivo biocompatibility. Overall, the composition, microstructure and swelling degree (≈245%) of scaffolds combine with the adequate dimensional stability, lack of toxicity, osteogenic activity in MG-63 cells and hBMSCs, along with the in vivo biocompatibility in rats allow considering this system as a promising biomaterial for the treatment of craniofacial tissue regeneration.
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Affiliation(s)
- Itzia Rodríguez-Méndez
- Faculty of Chemistry, Autonomous University of San Luis Potosi, San Luis Potosi 6, Salvador Nava Martínez, 78210 San Luis, S.L.P., Mexico.
| | - Mar Fernández-Gutiérrez
- Institute of Polymer Science and Technology, ICTP-CSIC, C/Juan de la Cierva 3, 28006 Madrid, Spain.
- CIBER, Carlos III Health Institute, C/Monforte de Lemos 3-5, Pabellón 11, 28029 Madrid, Spain.
| | - Amairany Rodríguez-Navarrete
- Faculty of Higher Studies, National Autonomous University of Mexico, Av. Chalma s/n Col. La Pastora, Cuautepec Barrio Bajo. Delegación Gustavo A. Madero, Ciudad de México 07160, Mexico.
| | - Raúl Rosales-Ibáñez
- Faculty of Higher Studies, National Autonomous University of Mexico, Av. Chalma s/n Col. La Pastora, Cuautepec Barrio Bajo. Delegación Gustavo A. Madero, Ciudad de México 07160, Mexico.
| | - Lorena Benito-Garzón
- Faculty of Medicine, University of Salamanca, C/Alfonso X el Sabio, s/n, 37007 Salamanca, Spain.
| | - Blanca Vázquez-Lasa
- Institute of Polymer Science and Technology, ICTP-CSIC, C/Juan de la Cierva 3, 28006 Madrid, Spain.
- CIBER, Carlos III Health Institute, C/Monforte de Lemos 3-5, Pabellón 11, 28029 Madrid, Spain.
| | - Julio San Román
- Institute of Polymer Science and Technology, ICTP-CSIC, C/Juan de la Cierva 3, 28006 Madrid, Spain.
- CIBER, Carlos III Health Institute, C/Monforte de Lemos 3-5, Pabellón 11, 28029 Madrid, Spain.
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Ozaki M, Takayama T, Yamamoto T, Ozawa Y, Nagao M, Tanabe N, Nakajima A, Suzuki N, Maeno M, Yamano S, Sato S. A collagen membrane containing osteogenic protein-1 facilitates bone regeneration in a rat mandibular bone defect. Arch Oral Biol 2017; 84:19-28. [PMID: 28938197 DOI: 10.1016/j.archoralbio.2017.09.005] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2016] [Revised: 08/31/2017] [Accepted: 09/07/2017] [Indexed: 02/03/2023]
Abstract
OBJECTIVES Osteogenic protein-1 (OP-1) has shown osteoinductive activities and is useful for clinical treatments, including bone regeneration. Regenerative procedures using a bioabsorbable collagen membrane (BCM) are well established in periodontal and implant dentistry. We evaluated the subsequent effects of the BCM in combination with OP-1 on bone regeneration in a rat mandibular circular critical-sized bone defect in vivo. DESIGN We used 8 rats that received surgery in both sides of the mandible, and created the total 16 defects which were divided into 4 groups: Group 1; no treatment, as a control, Group 2; BCM alone, Group 3; BCM containing low dose 0.5μg of OP-1 (L-OP-1), and Group 4; BCM containing high dose 2.0μg of OP-1 (H-OP-1). Newly formed bone was evaluated by micro computed tomography (micro-CT) and histological analyses at 8 weeks postoperatively. In quantitative and qualitative micro-CT analyses of the volume of new bone formation, bone density, and percentage of new bone area was evaluated. RESULTS BCM with rhOP-1 significantly increased and accelerated bone volume, bone mineral density, and percentage of new bone area compared to control and BCM alone at 8 weeks after surgery; these enhancements in bone regeneration in the OP-1-treated groups were dose-dependent. CONCLUSIONS OP-1 delivered with a BCM may have effective osteoinductive potency and be a good combination for bone regeneration. The use of such a combination device for osteogenesis may result in safer and more predictable bone regenerative outcomes in the future.
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Affiliation(s)
- Manami Ozaki
- Division of Applied Oral Sciences, Nihon University Graduate School of Dentistry, Tokyo, Japan
| | - Tadahiro Takayama
- Department of Periodontology, Nihon University School of Dentistry, Tokyo, Japan; Division of Advanced Dental Treatment, Dental Research Center, Nihon University School of Dentistry, Tokyo, Japan.
| | - Takanobu Yamamoto
- Division of Applied Oral Sciences, Nihon University Graduate School of Dentistry, Tokyo, Japan
| | - Yasumasa Ozawa
- Division of Applied Oral Sciences, Nihon University Graduate School of Dentistry, Tokyo, Japan
| | - Mayu Nagao
- Department of Periodontology, Nihon University School of Dentistry, Tokyo, Japan
| | - Natsuko Tanabe
- Department of Biochemistry, Nihon University School of Dentistry, Tokyo, Japan; Division of Functional Morphology, Dental Research Center, Nihon University School of Dentistry, Tokyo, Japan
| | - Akira Nakajima
- Department of Orthodontics, Nihon University School of Dentistry, Tokyo, Japan; Division of Advanced Dental Treatment, Dental Research Center, Nihon University School of Dentistry, Tokyo, Japan
| | - Naoto Suzuki
- Department of Biochemistry, Nihon University School of Dentistry, Tokyo, Japan; Division of Functional Morphology, Dental Research Center, Nihon University School of Dentistry, Tokyo, Japan
| | - Masao Maeno
- Department of Oral Health Sciences, Nihon University School of Dentistry, Tokyo, Japan; Division of Functional Morphology, Dental Research Center, Nihon University School of Dentistry, Tokyo, Japan
| | - Seiichi Yamano
- Department of Prosthodontics, New York University College of Dentistry, NY, U.S.A
| | - Shuichi Sato
- Department of Periodontology, Nihon University School of Dentistry, Tokyo, Japan; Division of Advanced Dental Treatment, Dental Research Center, Nihon University School of Dentistry, Tokyo, Japan
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Campos J, Varas-Godoy M, Haidar ZS. Physicochemical characterization of chitosan-hyaluronan-coated solid lipid nanoparticles for the targeted delivery of paclitaxel: a proof-of-concept study in breast cancer cells. Nanomedicine (Lond) 2017; 12:473-490. [DOI: 10.2217/nnm-2016-0371] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
Abstract
Aim: To investigate the potential of modified solid lipid nanoparticles (SLN) for the delivery of paclitaxel (PAX). Materials & methods: SLN loaded with PAX were prepared via modified high-pressure hot homogenization. Formulation parameters were optimized to obtain a high-quality delivery system. SLN cores were coated, layer-by-layer, with a chitosan and hyaluronan (HA) shell. Selectivity toward HA receptors was tested in a breast cancer cell line, MCF-7. Results: Stable and reproducible nano-sized and negatively charged nanoparticles resulted. Findings reveal that chitosan-HA-coated SLN facilitated the targeting, cellular uptake and the time-/dose-controlled delivery and release of PAX, enhancing intrinsic chemotherapeutic activities. Conclusion: SLN are suitable carrier candidates for nano-oncology given their localized, and potent cytotoxic potential overcoming multidrug-resistant cancer cells.
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Affiliation(s)
- Javier Campos
- Biomaterials & Tissue Engineering Research Group (BioMAT'X), Centro de Investigación Biomédica, Universidad de los Andes, Monseñor Álvaro del Portillo 12.455, Las Condes, Santiago, Chile
- Programa de Mejoramiento Institucional (PMI), I+D+i, Dirección de Innovación, Universidad de los Andes, Monseñor Álvaro del Portillo 12.455, Las Condes, Santiago, Chile
| | - Manuel Varas-Godoy
- Programa de Mejoramiento Institucional (PMI), I+D+i, Dirección de Innovación, Universidad de los Andes, Monseñor Álvaro del Portillo 12.455, Las Condes, Santiago, Chile
- Laboratorio Biología de la Reproducción, Centro de Investigación Biomédica, Universidad de los Andes, Monseñor Álvaro del Portillo 12.455, Las Condes, Santiago, Chile
| | - Ziyad Samir Haidar
- Biomaterials & Tissue Engineering Research Group (BioMAT'X), Centro de Investigación Biomédica, Universidad de los Andes, Monseñor Álvaro del Portillo 12.455, Las Condes, Santiago, Chile
- Programa de Mejoramiento Institucional (PMI), I+D+i, Dirección de Innovación, Universidad de los Andes, Monseñor Álvaro del Portillo 12.455, Las Condes, Santiago, Chile
- Faculty of Dentistry, Universidad de los Andes, Monseñor Álvaro del Portillo 12.455, Las Condes, Santiago, Chile
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Comprehensive Review of Adipose Stem Cells and Their Implication in Distraction Osteogenesis and Bone Regeneration. BIOMED RESEARCH INTERNATIONAL 2015; 2015:842975. [PMID: 26448947 PMCID: PMC4584039 DOI: 10.1155/2015/842975] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/13/2015] [Accepted: 08/02/2015] [Indexed: 12/31/2022]
Abstract
Bone is one of the most dynamic tissues in the human body that can heal following injury without leaving a scar. However, in instances of extensive bone loss, this intrinsic capacity of bone to heal may not be sufficient and external intervention becomes necessary. Several techniques are available to address this problem, including autogenous bone grafts and allografts. However, all these techniques have their own limitations. An alternative method is the technique of distraction osteogenesis, where gradual and controlled distraction of two bony segments after osteotomy leads to induction of new bone formation. Although distraction osteogenesis usually gives satisfactory results, its major limitation is the prolonged duration of time required before the external fixator is removed, which may lead to numerous complications. Numerous methods to accelerate bone formation in the context of distraction osteogenesis have been reported. A viable alternative to autogenous bone grafts for a source of osteogenic cells is mesenchymal stem cells from bone marrow. However, there are certain problems with bone marrow aspirate. Hence, scientists have investigated other sources for mesenchymal stem cells, specifically adipose tissue, which has been shown to be an excellent source of mesenchymal stem cells. In this paper, the potential use of adipose stem cells to stimulate bone formation is discussed.
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Compton J, Fragomen A, Rozbruch SR. Skeletal Repair in Distraction Osteogenesis: Mechanisms and Enhancements. JBJS Rev 2015; 3:01874474-201508000-00002. [PMID: 27490473 DOI: 10.2106/jbjs.rvw.n.00107] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Jocelyn Compton
- Columbia University College of Physicians and Surgeons, 630 West 168th Street, New York, NY 10031
| | - Austin Fragomen
- Hospital for Special Surgery, 535 East 70th Street, New York, NY 10021
| | - S Robert Rozbruch
- Hospital for Special Surgery, 535 East 70th Street, New York, NY 10021
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Shi S, Jiang W, Zhao T, Aifantis KE, Wang H, Lin L, Fan Y, Feng Q, Cui FZ, Li X. The application of nanomaterials in controlled drug delivery for bone regeneration. J Biomed Mater Res A 2015; 103:3978-92. [PMID: 26061384 DOI: 10.1002/jbm.a.35522] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2015] [Revised: 05/18/2015] [Accepted: 06/04/2015] [Indexed: 12/16/2022]
Affiliation(s)
- Shuo Shi
- Department of Orthopedics; The First Hospital of Hebei Medical University; Shijiazhuang 050031 China
| | - Wenbao Jiang
- Department of General Surgery; Zhangbei Hospital; Zhangbei 076450 China
| | - Tianxiao Zhao
- Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, School of Biological Science and Medical Engineering; Beihang University; Beijing 100191 China
| | - Katerina E. Aifantis
- Department of Civil Engineering-Engineering Mechanics; University of Arizona; Tucson Arizona 85721
| | - Hui Wang
- Department of Orthopedics; The First Hospital of Hebei Medical University; Shijiazhuang 050031 China
| | - Lei Lin
- Department of Orthopedics; The First Hospital of Hebei Medical University; Shijiazhuang 050031 China
| | - Yubo Fan
- Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, School of Biological Science and Medical Engineering; Beihang University; Beijing 100191 China
| | - Qingling Feng
- State Key Laboratory of New Ceramic and Fine Processing; Tsinghua University; Beijing 100084 China
| | - Fu-zhai Cui
- State Key Laboratory of New Ceramic and Fine Processing; Tsinghua University; Beijing 100084 China
| | - Xiaoming Li
- Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, School of Biological Science and Medical Engineering; Beihang University; Beijing 100191 China
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Makhdom AM, Nayef L, Tabrizian M, Hamdy RC. The potential roles of nanobiomaterials in distraction osteogenesis. NANOMEDICINE-NANOTECHNOLOGY BIOLOGY AND MEDICINE 2015; 11:1-18. [DOI: 10.1016/j.nano.2014.05.009] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/19/2014] [Revised: 04/25/2014] [Accepted: 05/16/2014] [Indexed: 10/25/2022]
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Nicholls F, Ng AH, Hu S, Janic K, Fallis C, Willett T, Grynpas M, Ferguson P. Can OP-1 stimulate union in a rat model of pathological fracture post treatment for soft tissue sarcoma? J Orthop Res 2014; 32:1252-63. [PMID: 24964906 DOI: 10.1002/jor.22661] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/13/2014] [Accepted: 05/14/2014] [Indexed: 02/04/2023]
Abstract
The goal of soft tissue sarcoma management in the extremities is limb preservation, often combining surgery and external beam radiation. In patients who have undergone this therapy in the thigh, pathologic fracture is a serious, late complication. Non-union rates of 80-90% persist. No reliable biologic solution exists. A rat model combining one 18 Gy dose of radiation and diaphyseal periosteal excision reliably generates atrophic non-union of femoral fractures. We hypothesized that augmentation with OP-1 would increase union rate. Female Sprague-Dawley retired breeder rats were randomized to Control, Disease (external beam radiotherapy and periosteal stripping), Control + OP-1 (80 µg) and Disease + OP-1 groups. Animals underwent prophylactic fixation and controlled left femur fracture. Twenty-eight, 35, and 42 days post-fracture were end-points. Femora were analyzed using MicroCT, Back Scattered Electron Microscopy, and Histomorphometry. We observed a 2% union rate in the Disease groups (±OP-1 treatment). The union rate in Control groups was 97%. MicroCT demonstrated a lack of callus volume in Disease groups. Heterotopic ossification was observed in some OP-1 treated animals. The ineffectiveness of OP-1 in stimulating fracture union in this model suggests the endogenous repair mechanism has been compromised beyond the capabilities of osteoinductive biologics.
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Affiliation(s)
- Fred Nicholls
- Division of Orthopaedic Surgery, Department of Surgery, University of Toronto, Toronto, Ontario, Canada
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Huang CL, Lee WL, Loo JS. Drug-eluting scaffolds for bone and cartilage regeneration. Drug Discov Today 2014; 19:714-24. [DOI: 10.1016/j.drudis.2013.11.007] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2013] [Revised: 10/16/2013] [Accepted: 11/06/2013] [Indexed: 12/19/2022]
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10
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Makhdom AM, Hamdy RC. The Role of Growth Factors on Acceleration of Bone Regeneration During Distraction Osteogenesis. TISSUE ENGINEERING PART B-REVIEWS 2013; 19:442-53. [DOI: 10.1089/ten.teb.2012.0717] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Asim M. Makhdom
- Division of Orthopaedic Surgery, Shriners Hospital for Children, Montreal Children Hospital, McGill University, Montreal, QC, Canada
- Department of Orthopaedic Surgery, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Reggie C. Hamdy
- Division of Orthopaedic Surgery, Shriners Hospital for Children, Montreal Children Hospital, McGill University, Montreal, QC, Canada
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11
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Gdalevitch M, Kasaai B, Alam N, Dohin B, Lauzier D, Hamdy RC. The effect of heparan sulfate application on bone formation during distraction osteogenesis. PLoS One 2013; 8:e56790. [PMID: 23457615 PMCID: PMC3574072 DOI: 10.1371/journal.pone.0056790] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2012] [Accepted: 01/15/2013] [Indexed: 01/01/2023] Open
Abstract
Bone morphogenetic proteins (BMPs) are recognized for their ability to induce bone formation in vivo and in vitro. Their osteogenic and osteoinductive properties are tightly regulated by the secretion of specific BMP antagonists, which have been shown to physically bind and sometimes be blocked by the extracellular proteoglycan heparan sulphate side chains (from hereon referred to as HS). The purpose of this study was to investigate if local application of 5 µg of HS proteoglycan to a bone regenerate site in a mouse model of distraction osteogenesis (DO) can accelerate bone healing and affect the expression of key members of the BMP signaling pathway. DO was performed on the right tibia of 115 adult male wild-type mice. At mid-distraction (day 11), half the group was injected locally with 5 µg of HS, while the other half was injected with saline. The mice were sacrificed at 2 time-points: mid-consolidation (34 days) and full consolidation (51 days). The distracted tibial zone was then collected for analysis by μCT, radiology, biomechanical testing, immunohistochemistry, and histology. While μCT data showed no statistically significant difference in bone formation, the results of biomechanical testing in stiffness and ultimate force were significantly lower in the HS-injected bones at 51 days, compared to controls. Immunohistochemistry results also suggested a decrease in expression of several key members of the BMP signaling pathway at 34 days. Furthermore, wound dehiscence and infection rates were significantly elevated in the HS group compared to the controls, which resulted in a higher rate of euthanasia in the treatment group. Our findings demonstrate that exogenous application of 5 µg of HS in the distracted gap of a murine model had a negative impact on bone and wound healing.
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Affiliation(s)
- Marie Gdalevitch
- Division of Orthopedics, Shriners Hospital for Children, Montréal, Quebec, Canada.
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Vo TN, Kasper FK, Mikos AG. Strategies for controlled delivery of growth factors and cells for bone regeneration. Adv Drug Deliv Rev 2012; 64:1292-309. [PMID: 22342771 PMCID: PMC3358582 DOI: 10.1016/j.addr.2012.01.016] [Citation(s) in RCA: 420] [Impact Index Per Article: 35.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2011] [Revised: 01/23/2012] [Accepted: 01/30/2012] [Indexed: 12/15/2022]
Abstract
The controlled delivery of growth factors and cells within biomaterial carriers can enhance and accelerate functional bone formation. The carrier system can be designed with pre-programmed release kinetics to deliver bioactive molecules in a localized, spatiotemporal manner most similar to the natural wound healing process. The carrier can also act as an extracellular matrix-mimicking substrate for promoting osteoprogenitor cellular infiltration and proliferation for integrative tissue repair. This review discusses the role of various regenerative factors involved in bone healing and their appropriate combinations with different delivery systems for augmenting bone regeneration. The general requirements of protein, cell and gene therapy are described, with elaboration on how the selection of materials, configurations and processing affects growth factor and cell delivery and regenerative efficacy in both in vitro and in vivo applications for bone tissue engineering.
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Affiliation(s)
- Tiffany N. Vo
- Department of Bioengineering, Rice University, P.O. Box 1892, MS 142, Houston, TX 77251-1892, USA
| | - F. Kurtis Kasper
- Department of Bioengineering, Rice University, P.O. Box 1892, MS 142, Houston, TX 77251-1892, USA
| | - Antonios G. Mikos
- Department of Bioengineering, Rice University, P.O. Box 1892, MS 142, Houston, TX 77251-1892, USA
- Department of Chemical and Biomolecular Engineering, Rice University, P.O. Box 1892, MS 142, Houston, TX 77251-1892, USA
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Abstract
Materials in the nanometer size range may possess unique and beneficial properties, which are very useful for different medical applications including stomatology, pharmacy, and implantology tissue engineering. The application of nanotechnology to medicine, known as nanomedicine, concerns the use of precisely engineered materials at this length scale to develop novel therapeutic and diagnostic modalities. Nanomaterials have unique physicochemical properties, such as small size, large surface area to mass ratio, and high reactivity, which are different from bulk materials of the same composition. Polymeric and ceramic nanoparticles have been extensively studied as particulate carriers in the pharmaceutical and medical fields, because they show promise as drug delivery systems as a result of their controlled- and sustained-release properties, subcellular size, and biocompatibility with tissue and cells. These properties can be used to overcome some of the limitations found in traditional therapeutic and diagnostic agents. Nanotechnology is showing promising developments in many areas and may benefit our health and welfare. However, a wide range of ethical issues has been raised by this innovative science. Many authorities believe that these advancements could lead to irreversible disasters if not limited by ethical guidelines.
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A Novel Self-Assembled Liposome-Based Polymeric Hydrogel for Cranio-Maxillofacial Applications: Preliminary Findings. Polymers (Basel) 2011. [DOI: 10.3390/polym3020967] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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15
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Bio-Inspired/-Functional Colloidal Core-Shell Polymeric-Based NanoSystems: Technology Promise in Tissue Engineering, Bioimaging and NanoMedicine. Polymers (Basel) 2010. [DOI: 10.3390/polym2030323] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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Liu Y, Wu G, de Groot K. Biomimetic coatings for bone tissue engineering of critical-sized defects. J R Soc Interface 2010; 7 Suppl 5:S631-47. [PMID: 20484228 DOI: 10.1098/rsif.2010.0115.focus] [Citation(s) in RCA: 97] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
The repair of critical-sized bone defects is still challenging in the fields of implantology, maxillofacial surgery and orthopaedics. Current therapies such as autografts and allografts are associated with various limitations. Cytokine-based bone tissue engineering has been attracting increasing attention. Bone-inducing agents have been locally injected to stimulate the native bone-formation activity, but without much success. The reason is that these drugs must be delivered slowly and at a low concentration to be effective. This then mimics the natural method of cytokine release. For this purpose, a suitable vehicle was developed, the so-called biomimetic coating, which can be deposited on metal implants as well as on biomaterials. Materials that are currently used to fill bony defects cannot by themselves trigger bone formation. Therefore, biological functionalization of such materials by the biomimetic method resulted in a novel biomimetic coating onto different biomaterials. Bone morphogenetic protein 2 (BMP-2)-incorporated biomimetic coating can be a solution for a large bone defect repair in the fields of dental implantology, maxillofacial surgery and orthopaedics. Here, we review the performance of the biomimetic coating both in vitro and in vivo.
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Affiliation(s)
- Yuelian Liu
- Department of Oral Implantology and Prosthodontics, Academic Centre of Dentistry Amsterdam (ACTA), VU University and University of Amsterdam, Amsterdam, The Netherlands.
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