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Ruehle MA, Li MTA, Cheng A, Krishnan L, Willett NJ, Guldberg RE. Decorin-supplemented collagen hydrogels for the co-delivery of bone morphogenetic protein-2 and microvascular fragments to a composite bone-muscle injury model with impaired vascularization. Acta Biomater 2019; 93:210-221. [PMID: 30685477 PMCID: PMC6759335 DOI: 10.1016/j.actbio.2019.01.045] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2018] [Revised: 01/17/2019] [Accepted: 01/23/2019] [Indexed: 12/25/2022]
Abstract
Traumatic musculoskeletal injuries that result in bone defects or fractures often affect both bone and the surrounding soft tissue. Clinically, these types of multi-tissue injuries have increased rates of complications and long-term disability. Vascular integrity is a key clinical indicator of injury severity, and revascularization of the injury site is a critical early step of the bone healing process. Our lab has previously established a pre-clinical model of composite bone-muscle injury that exhibits impaired bone healing; however, the vascularization response in this model had not yet been investigated. Here, the early revascularization of a bone defect following composite injury is shown to be impaired, and subsequently the therapeutic potential of combined vascularization and osteoinduction was investigated to overcome the impaired regeneration in composite injuries. A decorin (DCN)-supplemented collagen hydrogel was developed as a biomaterial delivery vehicle for the co-delivery microvascular fragments (MVF), which are multicellular segments of mature vasculature, and bone morphogenetic protein-2 (BMP-2), a potent osteoinductive growth factor. We hypothesized that collagen + DCN would increase BMP-2 retention over collagen alone due to DCN's ability to sequester TGF-ß growth factors. We further hypothesized that MVF would increase both early vascularization and subsequent BMP-2-mediated bone regeneration. Contrary to our hypothesis, BMP + MVF decreased the number of blood vessels relative to BMP alone and had no effect on bone healing. However, collagen + DCN was demonstrated to be a BMP-2 delivery vehicle capable of achieving bridging in the challenging composite defect model that is comparable to that achieved with a well-established alginate-based delivery system. STATEMENT OF SIGNIFICANCE: We have previously established a model of musculoskeletal trauma that exhibits impaired bone healing. For the first time, this work shows that the early revascularization response is also significantly, albeit modestly, impaired. A decorin-supplemented collagen hydrogel was used for the first time in vivo as a delivery vehicle for both a cell-based vascular therapeutic, MVF, and an osteoinductive growth factor, BMP-2. While MVF did not improve vascular volume or bone healing, collagen + DCN is a BMP-2 delivery vehicle capable of achieving bridging in the challenging composite defect model. Based on its support of robust angiogenesis in vitro, collagen + DCN may be extended for future use with other vascular therapeutics such as pre-formed vascular networks.
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Affiliation(s)
- Marissa A Ruehle
- Parker H. Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, GA, USA; Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology & Emory University, Atlanta, GA, USA
| | - Mon-Tzu Alice Li
- Parker H. Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, GA, USA; Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology & Emory University, Atlanta, GA, USA
| | - Albert Cheng
- Parker H. Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, GA, USA; George W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA, USA
| | - Laxminarayanan Krishnan
- Parker H. Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, GA, USA
| | - Nick J Willett
- Parker H. Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, GA, USA; Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology & Emory University, Atlanta, GA, USA; Department of Orthopedics, Emory University, Atlanta, GA, USA; Research Service, Atlanta VA Medical Center, Decatur, GA, USA
| | - Robert E Guldberg
- Parker H. Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, GA, USA; Knight Campus for Accelerating Scientific Impact, University of Oregon, Eugene, OR, USA.
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He R, Chen J, Jiang J, Liu B, Liang D, Zhou W, Chen W, Wang Y. Synergies of accelerating differentiation of bone marrow mesenchymal stem cells induced by low intensity pulsed ultrasound, osteogenic and endothelial inductive agent. ARTIFICIAL CELLS NANOMEDICINE AND BIOTECHNOLOGY 2019; 47:674-684. [PMID: 30835554 DOI: 10.1080/21691401.2019.1576704] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
In terms to investigate the effect of low-intensity pulsed ultrasound (LIPUS) for differentiation of bone marrow mesenchymal stem cells (BMSCs) and the feasibility of simultaneously inducing into osteoblasts and vascular endothelial cells within the cell culture medium in which two inductive agents are added at the same time with or without LIPUS. Cells were divided into a non-induced group, an osteoblast-induced group, a vascular endothelial-induced group, and a bidirectional differentiation-induced group. Each group was further subdivided into LIPUS and non-LIPUS groups. The cell proliferation in each group was measured by MTT assay. Cell morphological and ultrastructural changes were observed by inverted phase contrast microscopy and transmission electron microscopy. The differentiation of BMSCs was detected by confocal microscopy, flow cytometry and quantitative RT-PCR. Results demonstrated that both osteoblast and vascular endothelial cell differentiation markers were expressed in the bidirectional differentiation induction group and early osteogenesis and angiogenesis appeared. The cell proliferation, differentiation rate and expression of osteocalcin and vWF in the LIPUS groups were all significantly higher than those in the corresponding non-LIPUS group (p < .05), suggesting LIPUS treatment can promote the differentiation efficiency and rate of BMSCs, especially in the bidirectional differentiation induction group. This study suggests the combination of LIPUS and dual-inducing agents could induce and accelerate simultaneous differentiation of BMSCs to osteoblasts and vascular endothelial cells. These findings indicate the method could be applied to research on generating vascularized bone tissue with a shape and function that mimics natural bone to accelerate early osteogenesis and angiogenesis.
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Affiliation(s)
- Ruixin He
- a State Key Laboratory of Ultrasound Engineering in Medicine Co-Founded by Chongqing and the Ministry of Science and Technology, College of Biomedical Engineering, Chongqing Key Laboratory of Biomedical Engineering, Chongqing Collaborative Innovation Center for Minimally-invasive and Noninvasive Medicine , Chongqing Medical University , Chongqing , P.R.China
| | - Junlin Chen
- a State Key Laboratory of Ultrasound Engineering in Medicine Co-Founded by Chongqing and the Ministry of Science and Technology, College of Biomedical Engineering, Chongqing Key Laboratory of Biomedical Engineering, Chongqing Collaborative Innovation Center for Minimally-invasive and Noninvasive Medicine , Chongqing Medical University , Chongqing , P.R.China
| | - Jingwei Jiang
- a State Key Laboratory of Ultrasound Engineering in Medicine Co-Founded by Chongqing and the Ministry of Science and Technology, College of Biomedical Engineering, Chongqing Key Laboratory of Biomedical Engineering, Chongqing Collaborative Innovation Center for Minimally-invasive and Noninvasive Medicine , Chongqing Medical University , Chongqing , P.R.China
| | - Baoru Liu
- a State Key Laboratory of Ultrasound Engineering in Medicine Co-Founded by Chongqing and the Ministry of Science and Technology, College of Biomedical Engineering, Chongqing Key Laboratory of Biomedical Engineering, Chongqing Collaborative Innovation Center for Minimally-invasive and Noninvasive Medicine , Chongqing Medical University , Chongqing , P.R.China
| | - Dandan Liang
- a State Key Laboratory of Ultrasound Engineering in Medicine Co-Founded by Chongqing and the Ministry of Science and Technology, College of Biomedical Engineering, Chongqing Key Laboratory of Biomedical Engineering, Chongqing Collaborative Innovation Center for Minimally-invasive and Noninvasive Medicine , Chongqing Medical University , Chongqing , P.R.China
| | - Weichen Zhou
- a State Key Laboratory of Ultrasound Engineering in Medicine Co-Founded by Chongqing and the Ministry of Science and Technology, College of Biomedical Engineering, Chongqing Key Laboratory of Biomedical Engineering, Chongqing Collaborative Innovation Center for Minimally-invasive and Noninvasive Medicine , Chongqing Medical University , Chongqing , P.R.China
| | - Wenzhi Chen
- a State Key Laboratory of Ultrasound Engineering in Medicine Co-Founded by Chongqing and the Ministry of Science and Technology, College of Biomedical Engineering, Chongqing Key Laboratory of Biomedical Engineering, Chongqing Collaborative Innovation Center for Minimally-invasive and Noninvasive Medicine , Chongqing Medical University , Chongqing , P.R.China.,b The Second Affiliated Hospital of Chongqing Medical University , Chongqing , P.R.China
| | - Yan Wang
- a State Key Laboratory of Ultrasound Engineering in Medicine Co-Founded by Chongqing and the Ministry of Science and Technology, College of Biomedical Engineering, Chongqing Key Laboratory of Biomedical Engineering, Chongqing Collaborative Innovation Center for Minimally-invasive and Noninvasive Medicine , Chongqing Medical University , Chongqing , P.R.China
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Dual functional approaches for osteogenesis coupled angiogenesis in bone tissue engineering. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2019; 103:109761. [PMID: 31349418 DOI: 10.1016/j.msec.2019.109761] [Citation(s) in RCA: 84] [Impact Index Per Article: 16.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/17/2018] [Revised: 05/11/2019] [Accepted: 05/15/2019] [Indexed: 12/31/2022]
Abstract
Bone fracture healing is a multistep and overlapping process of inflammation, angiogenesis and osteogenesis. It is initiated by inflammation, causing the release of various cytokines and growth factors. It leads to the recruitment of stem cells and formation of vasculature resulting in the functional bone formation. This combined phenomenon is used by bone tissue engineers from past few years to address the problem of vasculature and osteogenic differentiation during bone regeneration. In this review, we have discussed all major studies reporting the dual functioning approach to promote osteogenesis coupled angiogenesis using various scaffolds. These scaffolds are broadly classified into four types based on the nature of their structural and functional components. The functionality of the scaffold is either due to the structural components or the loaded cargo which conducts or induces the coupled functionality. Dual delivery system for osteoinductive and angioinductive factors ensures the co-delivery of two different types of molecules to induce osteogenesis and angiogenesis. Single delivery scaffold for angioinductive and osteoinductive molecule releases single type of molecules which could induce both angiogenesis and osteogenesis. Osteoconductive scaffold consisted of bone constituents releases angioinductive factors. Osteoconductive and angioconductive scaffold composed of components which provide the native substrate features for osteogenesis and angiogenesis. This review article also discusses the studies highlighting the synergism of physico-chemical stimuli as dual functioning feature to enhance angiogenesis and osteogenesis simultaneously. In addition, this article covers one of the least discussed area of the bone regeneration i.e. 'cartilage formation as a median between angiogenesis and osteogenesis'.
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Echave MC, Pimenta-Lopes C, Pedraz JL, Mehrali M, Dolatshahi-Pirouz A, Ventura F, Orive G. Enzymatic crosslinked gelatin 3D scaffolds for bone tissue engineering. Int J Pharm 2019; 562:151-161. [PMID: 30853482 DOI: 10.1016/j.ijpharm.2019.02.043] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2018] [Revised: 02/17/2019] [Accepted: 02/27/2019] [Indexed: 02/07/2023]
Abstract
Bone tissue engineering is an emerging medical field that has been developed in recent years to address pathologies with limited ability of bones to regenerate. Here we report the fabrication and characterization of microbial transglutaminase crosslinked gelatin-based scaffolds designed for serving as both cell substrate and growth factor release system. In particular, morphological, biomechanical and biological features have been analyzed. The enzyme ratio applied during the fabrication of the scaffolds affects the swelling capacity and the mechanical properties of the final structure. The developed systems are not cytotoxic according to the biocompatibility tests. The biological performance of selected formulations was studied using L-929 fibroblasts, D1 MSC and MG63 osteoblasts. Moreover, scaffolds allowed efficient osteogenic differentiation and signaling of MSCs. MSC cultured on the scaffolds not only presented lower proliferative and stemness profile, but also increased expression of osteoblast-related genes (Col1a1, Runx2, Osx). Furthermore, the in vitro release kinetics of vascular endothelial growth factor (VEGF) and bone morphogenetic protein -2 (BMP-2) from the scaffolds were also investigated. The release of the growth factors produced from the scaffolds followed a first order kinetics. These results highlight that the scaffolds designed and developed in this work may be suitable candidates for bone tissue regeneration purposes.
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Affiliation(s)
- Mari Carmen Echave
- NanoBioCel Group, Laboratory of Pharmaceutics, School of Pharmacy, University of the Basque Country UPV/EHU, Paseo de la Universidad 7, Vitoria-Gasteiz 01006, Spain; Biomedical Research Networking Centre in Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Vitoria-Gasteiz, Spain
| | - Carolina Pimenta-Lopes
- Departament de Ciències Fisiològiques, Universitat de Barcelona, IDIBELL, C/ Feixa Llarga s/n 08907, Hospitalet de Llobregat, Spain
| | - José Luis Pedraz
- NanoBioCel Group, Laboratory of Pharmaceutics, School of Pharmacy, University of the Basque Country UPV/EHU, Paseo de la Universidad 7, Vitoria-Gasteiz 01006, Spain; Biomedical Research Networking Centre in Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Vitoria-Gasteiz, Spain
| | - Mehdi Mehrali
- Technical University of Denmark, Department of Health Technology, Center for Intestinal Absorption and Transport of Biopharmaceutical, 2800 Kgs, Denmark
| | - Alireza Dolatshahi-Pirouz
- Technical University of Denmark, Department of Health Technology, Center for Intestinal Absorption and Transport of Biopharmaceutical, 2800 Kgs, Denmark; Department of Dentistry - Regenerative Biomaterials, Radboud University Medical Center, Philips van Leydenlaan 25, Nijmegen 6525 EX, The Netherlands
| | - Fransesc Ventura
- Departament de Ciències Fisiològiques, Universitat de Barcelona, IDIBELL, C/ Feixa Llarga s/n 08907, Hospitalet de Llobregat, Spain
| | - Gorka Orive
- NanoBioCel Group, Laboratory of Pharmaceutics, School of Pharmacy, University of the Basque Country UPV/EHU, Paseo de la Universidad 7, Vitoria-Gasteiz 01006, Spain; Biomedical Research Networking Centre in Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Vitoria-Gasteiz, Spain; University Institute for Regenerative Medicine and Oral Implantology - UIRMI (UPV/EHU-Fundación Eduardo Anitua), Vitoria, Spain; Singapore Eye Research Institute, The Academia, 20 College Road, Discovery Tower, Singapore.
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55
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Ruehle MA, Krishnan L, Vantucci CE, Wang Y, Stevens HY, Roy K, Guldberg RE, Willett NJ. Effects of BMP-2 dose and delivery of microvascular fragments on healing of bone defects with concomitant volumetric muscle loss. J Orthop Res 2019; 37:553-561. [PMID: 30648751 DOI: 10.1002/jor.24225] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/27/2018] [Accepted: 01/11/2019] [Indexed: 02/04/2023]
Abstract
Traumatic composite bone-muscle injuries, such as open fractures, often require multiple surgical interventions and still typically result in long-term disability. Clinically, a critical indicator of composite injury severity is vascular integrity; vascular damage alone is sufficient to assign an open fracture to the most severe category. Challenging bone injuries are often treated with bone morphogenetic protein 2 (BMP-2), an osteoinductive growth factor, delivered on collagen sponge. Previous studies in a composite defect model found that a minimally bridging dose in the segmental defect model was unable to overcome concomitant muscle damage, but the effect of BMP dose on composite injuries has not yet been studied. Here, we test the hypotheses that BMP-2-mediated functional regeneration of composite extremity injuries is dose dependent and can be further enhanced via co-delivery of adipose-derived microvascular fragments (MVF), which have been previously shown to increase tissue vascular volume. Although MVF did not improve healing outcomes, we observed a significant BMP-2 dose-dependent increase in regenerated bone volume and biomechanical properties. This is the first known report of an increased BMP-2 dose improving bone healing with concomitant muscle damage. While high dose BMP-2 delivery can induce heterotopic ossification (HO) and increased inflammation, the maximum 10 μg dose used in this study did not result in HO and was associated with a lower circulating inflammatory cytokine profile than the low dose (2.5 μg) group. These data support the potential benefits of an increased, though still moderate, BMP-2 dose for treatment of bone defects with concomitant muscle damage. Published 2019. This article is a U.S. Government work and is in the public domain in the USA. J Orthop Res.
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Affiliation(s)
- Marissa A Ruehle
- Parker H. Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, Georgia.,Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology & Emory University, Atlanta, Georgia
| | - Laxminarayanan Krishnan
- Parker H. Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, Georgia
| | - Casey E Vantucci
- Parker H. Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, Georgia.,Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology & Emory University, Atlanta, Georgia
| | - Yuyan Wang
- Parker H. Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, Georgia
| | - Hazel Y Stevens
- Parker H. Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, Georgia
| | - Krishnendu Roy
- Parker H. Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, Georgia.,Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology & Emory University, Atlanta, Georgia
| | - Robert E Guldberg
- Parker H. Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, Georgia.,Knight Campus for Accelerating Scientific Impact, University of Oregon, Eugene, Oregon
| | - Nick J Willett
- Parker H. Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, Georgia.,Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology & Emory University, Atlanta, Georgia.,Research Service, Atlanta VA Medical Center, Decatur, Georgia.,Division of Orthopaedics, Emory University School of Medicine, 1670 Clairmont Rd, Room 5A125, Decatur 30033, Georgia
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56
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Kim I, Lee SS, Kim SHL, Bae S, Lee H, Hwang NS. Osteogenic Effects of VEGF-Overexpressed Human Adipose-Derived Stem Cells with Whitlockite Reinforced Cryogel for Bone Regeneration. Macromol Biosci 2019; 19:e1800460. [PMID: 30821921 DOI: 10.1002/mabi.201800460] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2018] [Revised: 02/13/2019] [Indexed: 12/13/2022]
Abstract
Bone is a vascularized tissue that is comprised of collagen fibers and calcium phosphate crystals such as hydroxyapatite (HAp) and whitlockite (WH). HAp and WH are known to elicit bone regeneration by stimulating osteoblast activities and osteogenic commitment of stem cells. In addition, vascular endothelial growth factor (VEGF) is shown to promote osteogenesis and angiogenesis which is considered as an essential process in bone repair by providing nutrients. In this study, VEGF-secreting human adipose-derived stem cells (VEGF-ADSCs) are developed by transducing ADSCs with VEGF-encoded lentivirus. Additionally, WH-reinforced gelatin/heparin cryogels (WH-C) are fabricated by loading WH into gelatin/heparin cryogels. VEGF-ADSC secrete tenfold more VEGF than ADSC and show increased VEGF secretion with cell growth. Also, incorporation of WH into cryogels provides a mineralized environment with ions secreted from WH. When the VEGF-ADSCs are seeded on WH-C, sustained release of VEGF is observed due to the specific affinity of VEGF to heparin. Finally, the synergistic effect of VEGF-ADSC and WH on osteogenesis is successfully confirmed by alkaline phosphatase and real-time polymerase chain reaction analysis. In vivo bone formation is demonstrated via implantation of VEGF-ADSC seeded WH-C into mouse calvarial bone defect model, resulted in enhanced bone development with the highest bone volume/total volume.
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Affiliation(s)
- Inseon Kim
- School of Chemical and Biological Engineering, Institute of Chemical Processes, Seoul National University, Seoul, 08826, Republic of Korea
| | - Seunghun S Lee
- Interdisciplinary Program in Bioengineering, Seoul National University, Seoul, 08826, Republic of Korea
| | - Seung Hyun L Kim
- Interdisciplinary Program in Bioengineering, Seoul National University, Seoul, 08826, Republic of Korea
| | - Sunghoon Bae
- School of Chemical and Biological Engineering, Institute of Chemical Processes, Seoul National University, Seoul, 08826, Republic of Korea
| | - Hoyon Lee
- School of Chemical and Biological Engineering, Institute of Chemical Processes, Seoul National University, Seoul, 08826, Republic of Korea
| | - Nathaniel S Hwang
- School of Chemical and Biological Engineering, Institute of Chemical Processes, Seoul National University, Seoul, 08826, Republic of Korea.,Interdisciplinary Program in Bioengineering, Seoul National University, Seoul, 08826, Republic of Korea.,BioMax Institute of Seoul National University, Seoul, 08826, Republic of Korea
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57
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Subbiah R, Guldberg RE. Materials Science and Design Principles of Growth Factor Delivery Systems in Tissue Engineering and Regenerative Medicine. Adv Healthc Mater 2019; 8:e1801000. [PMID: 30398700 DOI: 10.1002/adhm.201801000] [Citation(s) in RCA: 111] [Impact Index Per Article: 22.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2018] [Revised: 09/13/2018] [Indexed: 01/22/2023]
Abstract
Growth factors (GFs) are signaling molecules that direct cell development by providing biochemical cues for stem cell proliferation, migration, and differentiation. GFs play a key role in tissue regeneration, but one major limitation of GF-based therapies is dosage-related adverse effects. Additionally, the clinical applications and efficacy of GFs are significantly affected by the efficiency of delivery systems and other pharmacokinetic factors. Hence, it is crucial to design delivery systems that provide optimal activity, stability, and tunable delivery for GFs. Understanding the physicochemical properties of the GFs and the biomaterials utilized for the development of biomimetic GF delivery systems is critical for GF-based regeneration. Many different delivery systems have been developed to achieve tunable delivery kinetics for single or multiple GFs. The identification of ideal biomaterials with tunable properties for spatiotemporal delivery of GFs is still challenging. This review characterizes the types, properties, and functions of GFs, the materials science of widely used biomaterials, and various GF loading strategies to comprehensively summarize the current delivery systems for tunable spatiotemporal delivery of GFs aimed for tissue regeneration applications. This review concludes by discussing fundamental design principles for GF delivery vehicles based on the interactive physicochemical properties of the proteins and biomaterials.
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Affiliation(s)
- Ramesh Subbiah
- Parker H. Petit Institute for Bioengineering and Bioscience; George W. Woodruff School of Mechanical Engineering; Georgia Institute of Technology; Atlanta GA 30332 USA
| | - Robert E. Guldberg
- Parker H. Petit Institute for Bioengineering and Bioscience; George W. Woodruff School of Mechanical Engineering; Georgia Institute of Technology; Atlanta GA 30332 USA
- Phil and Penny Knight Campus for Accelerating Scientific Impact; 6231 University of Oregon; Eugene OR 97403 USA
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58
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Park MH, Subbiah R, Kwon MJ, Kim WJ, Kim SH, Park K, Lee K. The three dimensional cues-integrated-biomaterial potentiates differentiation of human mesenchymal stem cells. Carbohydr Polym 2018; 202:488-496. [DOI: 10.1016/j.carbpol.2018.09.010] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2018] [Revised: 08/29/2018] [Accepted: 09/05/2018] [Indexed: 12/20/2022]
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59
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Qazi TH, Berkmann JC, Schoon J, Geißler S, Duda GN, Boccaccini AR, Lippens E. Dosage and composition of bioactive glasses differentially regulate angiogenic and osteogenic response of human MSCs. J Biomed Mater Res A 2018; 106:2827-2837. [PMID: 30281904 DOI: 10.1002/jbm.a.36470] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2018] [Revised: 05/03/2018] [Accepted: 05/24/2018] [Indexed: 12/14/2022]
Abstract
Vascularization of the fracture site and cell-mediated deposition of the mineralized matrix are crucial determinants for successful bone regeneration after injury. Ceramic biomaterials such as bioactive glasses (BAGs) that release bioactive ions have shown promising results in bone defect regeneration. However, it remains unclear how the dosage and composition of bioactive ions influence the angiogenic and osteogenic behavior of primary human mesenchymal stromal cells (MSCs). Here, we show that exposure to ionic dissolution products from 1393 and 45S5 BAGs can evoke distinct angiogenic and osteogenic responses from primary MSCs in a dose- and composition-dependent manner. Significantly higher concentrations of the pro-angiogenic factors VEGF, HGF, PIGF, angiopoietin, and angiogenin were detected in conditioned media (CM) from MSCs exposed to 45S5, but not 1393, BAGs. Application of this CM to human umbilical vein endothelial cells (HUVECs) resulted in robust 2D tube formation in vitro. Osteogenic differentiation of MSCs was assessed by gene expression analysis and mineralization assays. Low concentrations (0.1% w/v) of 1393 BAGs significantly enhanced the gene expression of RUNX2 and ALP and induced an earlier onset of matrix mineralization compared to all other groups. We further tested whether simultaneous exposure to both BAGs would improve both angiogenic secretion and osteogenic differentiation of MSCs, and did not find evidence to support this hypothesis. Our results provide evidence of BAG composition-dependent enhancement of primary human MSCs' regenerative function, besides also underlining the importance of an in vitro evaluation of the dose-response relationship to translate BAG based approaches into safe and effective clinical therapies. © 2018 Wiley Periodicals, Inc. J Biomed Mater Res Part A: 106A: 2827-2837, 2018., 2018.
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Affiliation(s)
- Taimoor H Qazi
- Julius Wolff Institute, Charité Universitätsmedizin Berlin, Augustenburger Platz 1, 13353, Berlin, Germany.,Berlin-Brandenburg Center for Regenerative Therapies & Berlin-Brandenburg School for Regenerative Therapies, Charité Universitätsmedizin Berlin, Augustenburger Platz 1, 13353, Berlin, Germany
| | - Julia C Berkmann
- Julius Wolff Institute, Charité Universitätsmedizin Berlin, Augustenburger Platz 1, 13353, Berlin, Germany.,Berlin-Brandenburg Center for Regenerative Therapies & Berlin-Brandenburg School for Regenerative Therapies, Charité Universitätsmedizin Berlin, Augustenburger Platz 1, 13353, Berlin, Germany
| | - Janosch Schoon
- Julius Wolff Institute, Charité Universitätsmedizin Berlin, Augustenburger Platz 1, 13353, Berlin, Germany.,Berlin-Brandenburg Center for Regenerative Therapies & Berlin-Brandenburg School for Regenerative Therapies, Charité Universitätsmedizin Berlin, Augustenburger Platz 1, 13353, Berlin, Germany
| | - Sven Geißler
- Julius Wolff Institute, Charité Universitätsmedizin Berlin, Augustenburger Platz 1, 13353, Berlin, Germany.,Berlin-Brandenburg Center for Regenerative Therapies & Berlin-Brandenburg School for Regenerative Therapies, Charité Universitätsmedizin Berlin, Augustenburger Platz 1, 13353, Berlin, Germany
| | - Georg N Duda
- Julius Wolff Institute, Charité Universitätsmedizin Berlin, Augustenburger Platz 1, 13353, Berlin, Germany.,Berlin-Brandenburg Center for Regenerative Therapies & Berlin-Brandenburg School for Regenerative Therapies, Charité Universitätsmedizin Berlin, Augustenburger Platz 1, 13353, Berlin, Germany
| | - Aldo R Boccaccini
- Institute of Biomaterials, Department of Materials Science and Engineering, University of Erlangen-Nuremberg, Cauerstrasse 6, 91058, Erlangen, Germany
| | - Evi Lippens
- Julius Wolff Institute, Charité Universitätsmedizin Berlin, Augustenburger Platz 1, 13353, Berlin, Germany.,Berlin-Brandenburg Center for Regenerative Therapies & Berlin-Brandenburg School for Regenerative Therapies, Charité Universitätsmedizin Berlin, Augustenburger Platz 1, 13353, Berlin, Germany
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60
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Synergistic Effects of Controlled-Released BMP-2 and VEGF from nHAC/PLGAs Scaffold on Osteogenesis. BIOMED RESEARCH INTERNATIONAL 2018; 2018:3516463. [PMID: 30345299 PMCID: PMC6174819 DOI: 10.1155/2018/3516463] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/13/2018] [Revised: 07/12/2018] [Accepted: 09/04/2018] [Indexed: 01/18/2023]
Abstract
Tissue engineering bones take great advantages in massive bone defect repairing; under the induction of growth factors, seed cells differentiate into osteoblasts, and the scaffold materials gradually degrade and are replaced with neogenetic bones, which simulates the actual pathophysiological process of bone regeneration. However, mechanism research is required and further developed to instruct elements selection and optimization. In the present study, we prepared vascular endothelial growth factor/bone morphogenetic protein-2- nanohydroxyapatite/collagen (VEGF/ BMP-2- nHAC/ PLGAs) scaffolds and inoculated mouse MC3T3-E1 preosteoblasts to detect osteogenic indexes and activation of related signaling pathways. The hypothesis is to create a three-dimensional environment that simulates bone defect repairing, and p38 mitogen-activated kinase (p38) inhibitor was applied and osterix shRNA was transferred into mouse MC3T3-E1 preosteoblasts to further investigate the molecular mechanism of crosstalk between BMP-2 and VEGF. Our results demonstrated the following: (1) BMP-2 and VEGF were sustainably released from PLGAs microspheres. (2) nHAC/PLGAs scaffold occupied a three-dimensional porous structure and has excellent physical properties. (3) MC3T3-E1 cells proliferated and differentiated well in the scaffold. (4) Osteogenic differentiation related factors expression of VEGF/BMP-2 loaded scaffold was obviously higher than that of other groups; p38 inhibitor SB203580 decreased the nucleus/cytoplasm ratio of osterix expression. To conclude, the active artificial bone we prepared could provide a favorable growth space for MC3T3-E1 cells, and osteogenesis and maturation reinforced by simultaneous VEGF and BMP-2 treatment may be mainly through the activation of the p38 MAPK pathway to promote nuclear translocation of osterix protein.
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De Witte TM, Fratila-Apachitei LE, Zadpoor AA, Peppas NA. Bone tissue engineering via growth factor delivery: from scaffolds to complex matrices. Regen Biomater 2018; 5:197-211. [PMID: 30094059 PMCID: PMC6077800 DOI: 10.1093/rb/rby013] [Citation(s) in RCA: 277] [Impact Index Per Article: 46.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2018] [Revised: 05/11/2018] [Accepted: 05/14/2018] [Indexed: 02/06/2023] Open
Abstract
In recent years, bone tissue engineering has emerged as a promising solution to the limitations of current gold standard treatment options for bone related-disorders such as bone grafts. Bone tissue engineering provides a scaffold design that mimics the extracellular matrix, providing an architecture that guides the natural bone regeneration process. During this period, a new generation of bone tissue engineering scaffolds has been designed and characterized that explores the incorporation of signaling molecules in order to enhance cell recruitment and ingress into the scaffold, as well as osteogenic differentiation and angiogenesis, each of which is crucial to successful bone regeneration. Here, we outline and critically analyze key characteristics of successful bone tissue engineering scaffolds. We also explore candidate materials used to fabricate these scaffolds. Different growth factors involved in the highly coordinated process of bone repair are discussed, and the key requirements of a growth factor delivery system are described. Finally, we concentrate on an analysis of scaffold-based growth factor delivery strategies found in the recent literature. In particular, the incorporation of two-phase systems consisting of growth factor-loaded nanoparticles embedded into scaffolds shows great promise, both by providing sustained release over a therapeutically relevant timeframe and the potential to sequentially deliver multiple growth factors.
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Affiliation(s)
- Tinke-Marie De Witte
- Department of Biomedical Engineering, The University of Texas at Austin, Austin, TX, USA
- Additive Manufacturing Laboratory, Department of Biomechanical Engineering, Delft University of Technology (TU Delft), CD Delft, The Netherlands
| | - Lidy E Fratila-Apachitei
- Additive Manufacturing Laboratory, Department of Biomechanical Engineering, Delft University of Technology (TU Delft), CD Delft, The Netherlands
| | - Amir A Zadpoor
- Additive Manufacturing Laboratory, Department of Biomechanical Engineering, Delft University of Technology (TU Delft), CD Delft, The Netherlands
| | - Nicholas A Peppas
- Department of Biomedical Engineering, The University of Texas at Austin, Austin, TX, USA
- McKetta Department of Chemical Engineering, The University of Texas at Austin, Austin, TX, USA
- Institute for Biomaterials, Drug Delivery and Regenerative Medicine, The University of Texas at Austin, Austin, TX, USA
- Department of Pediatrics, and Department of Surgery and Perioperative Care, Dell Medical School, The University of Texas at Austin, Austin, TX, USA
- Division of Molecular Pharmaceutics and Drug Delivery, College of Pharmacy, The University of Texas at Austin, Austin, TX, USA
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Bok JS, Byun SH, Park BW, Kang YH, Lee SL, Rho GJ, Hwang SC, Woo DK, Lee HJ, Byun JH. The Role of Human Umbilical Vein Endothelial Cells in Osteogenic Differentiation of Dental Follicle-Derived Stem Cells in In Vitro Co-cultures. Int J Med Sci 2018; 15:1160-1170. [PMID: 30123053 PMCID: PMC6097253 DOI: 10.7150/ijms.27318] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/17/2018] [Accepted: 06/30/2018] [Indexed: 12/14/2022] Open
Abstract
Angiogenesis and vascularization are essential for the growth and survival of most tissues. Engineered bone tissue requires an active blood vessel network for survival and integration with mature host tissue. Angiogenesis also has an effect on cell growth and differentiation in vitro. However, the effect of angiogenic factors on osteoprogenitor cell differentiation remains unclear. We studied the effects of human umbilical vein endothelial cells (HUVECs) on osteogenic differentiation of dental follicle-derived stem cells (DFSCs) in vitro by co-culturing DFSCs and HUVECs. Cell viability, based on metabolic activity and DNA content, was highest for co-cultures with a DFSC/HUVEC ratio of 50:50 in a 1:1 mixture of mesenchymal stem cell growth medium and endothelial cell growth medium. Osteoblastic and angiogenic phenotypes were enhanced in co-cultures with a DFSC/HUVEC ratio of 50:50 compared with DFSC monocultures. Increased expression of angiogenic phenotypes and vascular endothelial growth factor (VEGF) levels were observed over time in both 50:50 DFSC/HUVEC co-cultures and DFSC monocultures during culture period. Our results showed that increased angiogenic activity in DFSC/HUVEC co-cultures may stimulate osteoblast maturation of DFSCs. Therefore, the secretion of angiogenic factors from HUVECs may play a role in the osteogenic differentiation of DFSCs.
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Affiliation(s)
- Jung-Suk Bok
- Department of Oral and Maxillofacial Surgery, Gyeongsang National University School of Medicine and Gyeongsang National University Hospital, Institute of Health Sciences, Gyeongsang National University, Jinju, Republic of Korea
| | - Sung-Hoon Byun
- Department of Oral and Maxillofacial Surgery, Gyeongsang National University School of Medicine and Gyeongsang National University Hospital, Institute of Health Sciences, Gyeongsang National University, Jinju, Republic of Korea
| | - Bong-Wook Park
- Department of Oral and Maxillofacial Surgery, Gyeongsang National University School of Medicine and Gyeongsang National University Hospital, Institute of Health Sciences, Gyeongsang National University, Jinju, Republic of Korea
| | - Young-Hoon Kang
- Department of Oral and Maxillofacial Surgery, Gyeongsang National University School of Medicine and Gyeongsang National University Hospital, Institute of Health Sciences, Gyeongsang National University, Jinju, Republic of Korea
| | - Sung-Lim Lee
- Department of Theriogenology and Biotechnology, College of Veterinary Medicine, Gyeongsang National University, Jinju, Republic of Korea
| | - Gyu-Jin Rho
- Department of Theriogenology and Biotechnology, College of Veterinary Medicine, Gyeongsang National University, Jinju, Republic of Korea
| | - Sun-Chul Hwang
- Department of Orthopaedic Surgery, Institute of Health Sciences, Gyeongsang National University School of Medicine, Jinju, Republic of Korea
| | - Dong Kyun Woo
- College of Pharmacy and Research Institute of Pharmaceutical Sciences, Gyeongsang National University, Jinju, Republic of Korea
| | - Hyeon-Jeong Lee
- Department of Theriogenology and Biotechnology, College of Veterinary Medicine, Gyeongsang National University, Jinju, Republic of Korea
| | - June-Ho Byun
- Department of Oral and Maxillofacial Surgery, Gyeongsang National University School of Medicine and Gyeongsang National University Hospital, Institute of Health Sciences, Gyeongsang National University, Jinju, Republic of Korea
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Romero-Sánchez LB, Marí-Beffa M, Carrillo P, Medina MÁ, Díaz-Cuenca A. Copper-containing mesoporous bioactive glass promotes angiogenesis in an in vivo zebrafish model. Acta Biomater 2018; 68:272-285. [PMID: 29288822 DOI: 10.1016/j.actbio.2017.12.032] [Citation(s) in RCA: 53] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2017] [Revised: 12/20/2017] [Accepted: 12/22/2017] [Indexed: 12/18/2022]
Abstract
The osteogenic and angiogenic responses of organisms to the ionic products of degradation of bioactive glasses (BGs) are being intensively investigated. The promotion of angiogenesis by copper (Cu) has been known for more than three decades. This element can be incorporated to delivery carriers, such as BGs, and the materials used in biological assays. In this work, Cu-containing mesoporous bioactive glass (MBG) in the SiO2-CaO-P2O5 compositional system was prepared incorporating 5% mol Cu (MBG-5Cu) by replacement of the corresponding amount of Ca. The biological effects of the ionic products of MBG biodegradation were evaluated on a well-known endothelial cell line, the bovine aorta endothelial cells (BAEC), as well as in an in vivo zebrafish (Danio rerio) embryo assay. The results suggest that ionic products of both MBG (Cu free) and MBG-5Cu materials promote angiogenesis. In vitro cell cultures show that the ionic dissolution products of these materials are not toxic and promote BAEC viability and migration. In addition, the in vivo assay indicates that both exposition and microinjection of zebrafish embryos with Cu free MBG material increase vessel number and thickness of the subintestinal venous plexus (SIVP), whereas assays using MBG-5Cu enhance this effect. STATEMENT OF SIGNIFICANCE Mesoporous bioactive glasses (MBGs) with high specific surface area, well-ordered pores, large pore volumes and controllable amount of ions are interesting to develop controlled drug delivery systems for bone tissue regeneration. Copper (Cu) incorporation to the basic SiO2-CaO-P2O5 composition has attracted high interest due to its multifunctional biological properties. Promotion of angiogenesis is one of these properties, which can be integrated to the biomaterial with lower cost and higher stability when compared with growth factors. This work reports the synthesis and characterization of Cu-containing MBG evaluating its angiogenic properties in the subintestinal vessel zebrafish assay. This transgenic in vivo assay is merging as an alternative model providing short-time consuming protocols and facilities during pro-angiogenic drug screenings. The report shows that the ionic products of this MBG material delivered to the zebrafish incubation media significantly enhance angiogenesis in comparison with control groups. Besides, results indicate Cu ions may exhibit a synergic effect with Si, Ca, and P ions in angiogenesis stimulation both in vitro and in vivo. To our knowledge, this is the first time that zebrafish in vivo assays are used to evaluate angiogenic activity of ionic dissolution products from MBG materials.
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Chen X, Xu ML, Wang CN, Zhang LZ, Zhao YH, Zhu CL, Chen Y, Wu J, Yang YM, Wang XD. A partition-type tubular scaffold loaded with PDGF-releasing microspheres for spinal cord repair facilitates the directional migration and growth of cells. Neural Regen Res 2018; 13:1231-1240. [PMID: 30028332 PMCID: PMC6065242 DOI: 10.4103/1673-5374.235061] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
Abstract
The best tissue-engineered spinal cord grafts not only match the structural characteristics of the spinal cord but also allow the seed cells to grow and function in situ. Platelet-derived growth factor (PDGF) has been shown to promote the migration of bone marrow stromal cells; however, cytokines need to be released at a steady rate to maintain a stable concentration in vivo. Therefore, new methods are needed to maintain an optimal concentration of cytokines over an extended period of time to effectively promote seed cell localization, proliferation and differentiation. In the present study, a partition-type tubular scaffold matching the anatomical features of the thoracic 8–10 spinal cord of the rat was fabricated using chitosan and then subsequently loaded with chitosan-encapsulated PDGF-BB microspheres (PDGF-MSs). The PDGF-MS-containing scaffold was then examined in vitro for sustained-release capacity, biocompatibility, and its effect on neural progenitor cells differentiated in vitro from multilineage-differentiating stress-enduring cells (MUSE-NPCs). We found that pre-freezing for 2 hours at −20°C significantly increased the yield of partition-type tubular scaffolds, and 30 μL of 25% glutaraldehyde ensured optimal crosslinking of PDGF-MSs. The resulting PDGF-MSs cumulatively released 52% of the PDGF-BB at 4 weeks in vitro without burst release. The PDGF-MS-containing tubular scaffold showed suitable biocompatibility towards MUSE-NPCs and could promote the directional migration and growth of these cells. These findings indicate that the combination of a partition-type tubular scaffold, PDGF-MSs and MUSE-NPCs may be a promising model for the fabrication of tissue-engineered spinal cord grafts.
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Affiliation(s)
- Xue Chen
- School of Biology & Basic Medical Sciences, Soochow University, Suzhou; Department of Histology and Embryology, Medical College, Nantong University, Nantong; Wuxi School of Medicine, Jiangnan University, Wuxi, Jiangsu Province, China
| | - Mei-Ling Xu
- Department of Histology and Embryology, Medical College, Nantong University, Nantong, Jiangsu Province, China
| | - Cheng-Niu Wang
- Department of Histology and Embryology, Medical College, Nantong University, Nantong, Jiangsu Province, China
| | - Lu-Zhong Zhang
- Jiangsu Key Laboratory of Neuroregeneration, Co-innovation Center of Neuroregeneration, Nantong University, Nantong, Jiangsu Province, China
| | - Ya-Hong Zhao
- Jiangsu Key Laboratory of Neuroregeneration, Co-innovation Center of Neuroregeneration, Nantong University, Nantong, Jiangsu Province, China
| | - Chang-Lai Zhu
- Jiangsu Key Laboratory of Neuroregeneration, Co-innovation Center of Neuroregeneration, Nantong University, Nantong, Jiangsu Province, China
| | - Ying Chen
- Department of Histology and Embryology, Medical College, Nantong University, Nantong, Jiangsu Province, China
| | - Jian Wu
- Department of Histology and Embryology, Medical College, Nantong University, Nantong, Jiangsu Province, China
| | - Yu-Min Yang
- Jiangsu Key Laboratory of Neuroregeneration, Co-innovation Center of Neuroregeneration, Nantong University, Nantong, Jiangsu Province, China
| | - Xiao-Dong Wang
- Department of Histology and Embryology, Medical College, Nantong University, Nantong, Jiangsu Province, China
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Kim HD, Amirthalingam S, Kim SL, Lee SS, Rangasamy J, Hwang NS. Biomimetic Materials and Fabrication Approaches for Bone Tissue Engineering. Adv Healthc Mater 2017; 6. [PMID: 29171714 DOI: 10.1002/adhm.201700612] [Citation(s) in RCA: 163] [Impact Index Per Article: 23.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2017] [Revised: 10/09/2017] [Indexed: 01/14/2023]
Abstract
Various strategies have been explored to overcome critically sized bone defects via bone tissue engineering approaches that incorporate biomimetic scaffolds. Biomimetic scaffolds may provide a novel platform for phenotypically stable tissue formation and stem cell differentiation. In recent years, osteoinductive and inorganic biomimetic scaffold materials have been optimized to offer an osteo-friendly microenvironment for the osteogenic commitment of stem cells. Furthermore, scaffold structures with a microarchitecture design similar to native bone tissue are necessary for successful bone tissue regeneration. For this reason, various methods for fabricating 3D porous structures have been developed. Innovative techniques, such as 3D printing methods, are currently being utilized for optimal host stem cell infiltration, vascularization, nutrient transfer, and stem cell differentiation. In this progress report, biomimetic materials and fabrication approaches that are currently being utilized for biomimetic scaffold design are reviewed.
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Affiliation(s)
- Hwan D. Kim
- School of Chemical and Biological Engineering; The Institute of Chemical Processes; Seoul National University; Seoul 151-742 Republic of Korea
| | | | - Seunghyun L. Kim
- Interdisciplinary Program in Bioengineering; Seoul National University; Seoul 151-742 Republic of Korea
| | - Seunghun S. Lee
- Interdisciplinary Program in Bioengineering; Seoul National University; Seoul 151-742 Republic of Korea
| | - Jayakumar Rangasamy
- Centre for Nanosciences and Molecular Medicine; Amrita University; Kochi 682041 India
| | - Nathaniel S. Hwang
- School of Chemical and Biological Engineering; The Institute of Chemical Processes; Seoul National University; Seoul 151-742 Republic of Korea
- Interdisciplinary Program in Bioengineering; Seoul National University; Seoul 151-742 Republic of Korea
- The BioMax Institute of Seoul National University; Seoul 151-742 Republic of Korea
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66
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Wang Q, Zhang Y, Li B, Chen L. Controlled dual delivery of low doses of BMP-2 and VEGF in a silk fibroin-nanohydroxyapatite scaffold for vascularized bone regeneration. J Mater Chem B 2017; 5:6963-6972. [PMID: 32264345 DOI: 10.1039/c7tb00949f] [Citation(s) in RCA: 65] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
The controlled co-release of osteoinductive and angiogenic factors is an efficient approach to promote vascularized bone regeneration, and a suitable controlled release system can largely reduce the usage of these factors to avoid cost and safety problems. In this study, a cell-free vascularized bone tissue engineering system based on a silk fibroin (SF)/nanohydroxyapatite (nHAp) scaffold was developed, in which very low doses of osteoinductive and angiogenic factors, bone morphogenetic protein-2 (BMP-2) and vascular endothelial growth factor (VEGF), were embedded and released in a controlled manner to facilitate bone formation and vascularization, respectively. BMP-2 and VEGF were adsorbed onto SF microspheres (diameter of 1.5 ± 0.3 μm) that were prepared using a co-flow capillary device, and these microspheres were subsequently incorporated within the SF/nHAp scaffolds to provide controlled release. BMP-2 and VEGF were incorporated into SF microspheres via chemical covalent bonding and physical adsorption, respectively, leading to their controlled and sustained release from the SF/nHAp scaffolds. The rapid initial release of VEGF mimicked its expression at the early bone healing stage and promoted angiogenesis, and the relatively slow and sustained release of BMP-2 facilitated osteogenic differentiation both in vitro and in vivo, and the bone completely bridged the rat calvarial defects after 12 weeks of implantation. Overall, our findings suggest that the controlled dual release of very low doses of BMP-2 (300 ng per scaffold) and VEGF (20 ng per scaffold) from SF/nHAp scaffolds results in a synergistic effect on vascularized bone regeneration; this controlled release system can largely reduce the usage of BMP-2 as compared to other systems.
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Affiliation(s)
- Qiang Wang
- Department of Orthopaedic Surgery, the First Affiliated Hospital of Soochow University, Suzhou, Jiangsu 215006, P. R. China.
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67
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Microgels of silylated HPMC as a multimodal system for drug co-encapsulation. Int J Pharm 2017; 532:790-801. [PMID: 28755992 DOI: 10.1016/j.ijpharm.2017.07.074] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2017] [Revised: 07/21/2017] [Accepted: 07/25/2017] [Indexed: 01/22/2023]
Abstract
Combined therapy is a global strategy developed to prevent drug resistance in cancer and infectious diseases. In this field, there is a need of multifunctional drug delivery systems able to co-encapsulate small drug molecules, peptides, proteins, associated to targeting functions, nanoparticles. Silylated hydrogels are alkoxysilane hybrid polymers that can be engaged in a sol-gel process, providing chemical cross linking in physiological conditions, and functionalized biocompatible hybrid materials. In the present work, microgels were prepared with silylated (hydroxypropyl)methyl cellulose (Si-HPMC) that was chemically cross linked in soft conditions of pH and temperature. They were prepared by an emulsion templating process, water in oil (W/O), as microreactors where the condensation reaction took place. The ability to functionalize the microgels, so-called FMGs, in a one-pot process, was evaluated by grafting a silylated hydrophilic model drug, fluorescein (Si-Fluor), using the same reaction of condensation. Biphasic microgels (BPMGs) were prepared to evaluate their potential to encapsulate lipophilic model drug (Nile red). They were composed of two separate compartments, one oily phase (sesame oil) trapped in the cross linked Si-HPMC hydrophilic phase. The FMGs and BPMGs were characterized by different microscopic techniques (optic, epi-fluorescence, Confocal Laser Scanning Microscopy and scanning electronic microscopy), the mechanical properties were monitored using nano indentation by Atomic Force Microscopy (AFM), and different preliminary tests were performed to evaluate their chemical and physical stability. Finally, it was demonstrated that it is possible to co-encapsulate both hydrophilic and hydrophobic drugs, in silylated microgels, that were physically and chemically stable. They were obtained by chemical cross linking in soft conditions, and without surfactant addition during the emulsification process. The amount of drug loaded was in favor of further biological activity. Mechanical stimulations should be necessary to trigger drug release.
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68
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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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69
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van Rijt S, Habibovic P. Enhancing regenerative approaches with nanoparticles. J R Soc Interface 2017; 14:20170093. [PMID: 28404870 PMCID: PMC5414913 DOI: 10.1098/rsif.2017.0093] [Citation(s) in RCA: 53] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2017] [Accepted: 03/27/2017] [Indexed: 12/13/2022] Open
Abstract
In this review, we discuss recent developments in the field of nanoparticles and their use in tissue regeneration approaches. Owing to their unique chemical properties and flexibility in design, nanoparticles can be used as drug delivery systems, to create novel features within materials or as bioimaging agents, or indeed these properties can be combined to create smart multifunctional structures. This review aims to provide an overview of this research field where the focus will be on nanoparticle-based strategies to stimulate bone regeneration; however, the same principles can be applied for other tissue and organ regeneration strategies. In the first section, nanoparticle-based methods for the delivery of drugs, growth factors and genetic material to promote tissue regeneration are discussed. The second section deals with the addition of nanoparticles to materials to create nanocomposites. Such materials can improve several material properties, including mechanical stability, biocompatibility and biological activity. The third section will deal with the emergence of a relatively new field of research using nanoparticles in advanced cell imaging and stem cell tracking approaches. As the development of nanoparticles continues, incorporation of this technology in the field of regenerative medicine will ultimately lead to new tools that can diagnose, track and stimulate the growth of new tissues and organs.
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Affiliation(s)
- Sabine van Rijt
- MERLN Institute for Technology-inspired Regenerative Medicine, Maastricht University, The Netherlands
| | - Pamela Habibovic
- MERLN Institute for Technology-inspired Regenerative Medicine, Maastricht University, The Netherlands
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Synergistic Effects of Vascular Endothelial Growth Factor on Bone Morphogenetic Proteins Induced Bone Formation In Vivo: Influencing Factors and Future Research Directions. BIOMED RESEARCH INTERNATIONAL 2016; 2016:2869572. [PMID: 28070506 PMCID: PMC5187461 DOI: 10.1155/2016/2869572] [Citation(s) in RCA: 49] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/07/2016] [Revised: 10/16/2016] [Accepted: 10/24/2016] [Indexed: 02/08/2023]
Abstract
Vascular endothelial growth factor (VEGF) and bone morphogenetic proteins (BMPs), as key mediators in angiogenesis and osteogenesis, are used in a combined delivery manner as a novel strategy in bone tissue engineering. VEGF has the potential to enhance BMPs induced bone formation. Both gene delivery and material-based delivery systems were incorporated in previous studies to investigate the synergistic effects of VEGF and BMPs. However, their results were controversial due to variation of methods incorporated in different studies. Factors influencing the synergistic effects of VEGF on BMPs induced bone formation were identified and analyzed in this review to reduce confusion on this issue. The potential mechanisms and directions of future studies were also proposed here. Further investigating mechanisms of the synergistic effects and optimizing these influencing factors will help to generate more effective bone regeneration.
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71
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Cattalini JP, Roether J, Hoppe A, Pishbin F, Haro Durand L, Gorustovich A, Boccaccini AR, Lucangioli S, Mouriño V. Nanocomposite scaffolds with tunable mechanical and degradation capabilities: co-delivery of bioactive agents for bone tissue engineering. ACTA ACUST UNITED AC 2016; 11:065003. [PMID: 27767020 DOI: 10.1088/1748-6041/11/6/065003] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Novel multifunctional nanocomposite scaffolds made of nanobioactive glass and alginate crosslinked with therapeutic ions such as calcium and copper were developed for delivering therapeutic agents, in a highly controlled and sustainable manner, for bone tissue engineering. Alendronate, a well-known antiresorptive agent, was formulated into microspheres under optimized conditions and effectively loaded within the novel multifunctional scaffolds with a high encapsulation percentage. The size of the cation used for the alginate crosslinking impacted directly on porosity and viscoelastic properties, and thus, on the degradation rate and the release profile of copper, calcium and alendronate. According to this, even though highly porous structures were created with suitable pore sizes for cell ingrowth and vascularization in both cases, copper-crosslinked scaffolds showed higher values of porosity, elastic modulus, degradation rate and the amount of copper and alendronate released, when compared with calcium-crosslinked scaffolds. In addition, in all cases, the scaffolds showed bioactivity and mechanical properties close to the endogenous trabecular bone tissue in terms of viscoelasticity. Furthermore, the scaffolds showed osteogenic and angiogenic properties on bone and endothelial cells, respectively, and the extracts of the biomaterials used promoted the formation of blood vessels in an ex vivo model. These new bioactive nanocomposite scaffolds represent an exciting new class of therapeutic cell delivery carrier with tunable mechanical and degradation properties; potentially useful in the controlled and sustainable delivery of therapeutic agents with active roles in bone formation and angiogenesis, as well as in the support of cell proliferation and osteogenesis for bone tissue engineering.
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Affiliation(s)
- Juan P Cattalini
- Department of Pharmaceutical Technology, Faculty of Pharmacy and Biochemistry, University of Buenos Aires, Buenos Aires, PC1113, Argentina
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Yu D, Li S, Wang S, Li X, Zhu M, Huang S, Sun L, Zhang Y, Liu Y, Wang S. Development and Characterization of VEGF165-Chitosan Nanoparticles for the Treatment of Radiation-Induced Skin Injury in Rats. Mar Drugs 2016; 14:md14100182. [PMID: 27727163 PMCID: PMC5082330 DOI: 10.3390/md14100182] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2016] [Revised: 08/30/2016] [Accepted: 08/31/2016] [Indexed: 12/20/2022] Open
Abstract
Radiation-induced skin injury, which remains a serious concern in radiation therapy, is currently believed to be the result of vascular endothelial cell injury and apoptosis. Here, we established a model of acute radiation-induced skin injury and compared the effect of different vascular growth factors on skin healing by observing the changes of microcirculation and cell apoptosis. Vascular endothelial growth factor (VEGF) was more effective at inhibiting apoptosis and preventing injury progression than other factors. A new strategy for improving the bioavailability of vascular growth factors was developed by loading VEGF with chitosan nanoparticles. The VEGF-chitosan nanoparticles showed a protective effect on vascular endothelial cells, improved the local microcirculation, and delayed the development of radioactive skin damage.
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Affiliation(s)
- Daojiang Yu
- Department of Plastic Surgery, the Second Affiliated Hospital, Soochow University, Suzhou 215004, China.
- Department of Pathology, School of Biology & Basic Medical Sciences, Soochow University, Suzhou 215123, China.
| | - Shan Li
- College of Pharmaceutical Science, Soochow University, Suzhou 215123, China.
| | - Shuai Wang
- Department of Plastic Surgery, the Second Affiliated Hospital, Soochow University, Suzhou 215004, China.
| | - Xiujie Li
- Department of Plastic Surgery, the Second Affiliated Hospital, Soochow University, Suzhou 215004, China.
| | - Minsheng Zhu
- Department of Pathology, School of Biology & Basic Medical Sciences, Soochow University, Suzhou 215123, China.
| | - Shai Huang
- Department of Pathology, School of Biology & Basic Medical Sciences, Soochow University, Suzhou 215123, China.
| | - Li Sun
- Department of Pathology, School of Biology & Basic Medical Sciences, Soochow University, Suzhou 215123, China.
| | - Yongsheng Zhang
- Department of Pathology, the Second Affiliated Hospital of Soochow University, Suzhou 215004, China.
| | - Yanli Liu
- College of Pharmaceutical Science, Soochow University, Suzhou 215123, China.
| | - Shouli Wang
- Department of Pathology, School of Biology & Basic Medical Sciences, Soochow University, Suzhou 215123, China.
- Institute of Radiology & Oncology, Soochow University, Suzhou 215006, China.
- Suzhou Key Laboratory of Tumor Microenvironment Pathology, Suzhou 215123, China.
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73
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Wagner Q, Offner D, Idoux-Gillet Y, Saleem I, Somavarapu S, Schwinté P, Benkirane-Jessel N, Keller L. Advanced nanostructured medical device combining mesenchymal cells and VEGF nanoparticles for enhanced engineered tissue vascularization. Nanomedicine (Lond) 2016; 11:2419-30. [PMID: 27529130 DOI: 10.2217/nnm-2016-0189] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
AIM Success of functional vascularized tissue repair depends on vascular support system supply and still remains challenging. Our objective was to develop a nanoactive implant enhancing endothelial cell activity, particularly for bone tissue engineering in the regenerative medicine field. MATERIALS & METHODS We developed a new strategy of tridimensional implant based on cell-dependent sustained release of VEGF nanoparticles. These nanoparticles were homogeneously distributed within nanoreservoirs onto the porous scaffold, with quicker reorganization of endothelial cells. Moreover, the activity of this active smart implant on cells was also modulated by addition of osteoblastic cells. RESULTS & CONCLUSION This sophisticated active strategy should potentiate efficiency of current therapeutic implants for bone repair, avoiding the need for bone substitutes.
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Affiliation(s)
- Quentin Wagner
- INSERM (French National Institute of Health & Medical Research), "Osteoarticular & Dental Regenerative Nanomedicine" Laboratory, UMR 1109, Faculté de Médecine, F-67085 Strasbourg Cedex. FMTS, France.,Université de Strasbourg, Faculté de Chirurgie Dentaire, 1 place de l'Hôpital, F-67000 Strasbourg, France
| | - Damien Offner
- INSERM (French National Institute of Health & Medical Research), "Osteoarticular & Dental Regenerative Nanomedicine" Laboratory, UMR 1109, Faculté de Médecine, F-67085 Strasbourg Cedex. FMTS, France.,Université de Strasbourg, Faculté de Chirurgie Dentaire, 1 place de l'Hôpital, F-67000 Strasbourg, France
| | - Ysia Idoux-Gillet
- INSERM (French National Institute of Health & Medical Research), "Osteoarticular & Dental Regenerative Nanomedicine" Laboratory, UMR 1109, Faculté de Médecine, F-67085 Strasbourg Cedex. FMTS, France.,Université de Strasbourg, Faculté de Chirurgie Dentaire, 1 place de l'Hôpital, F-67000 Strasbourg, France
| | - Imran Saleem
- School of Pharmacy & Biomolecular Sciences, Liverpool John Moores University, Liverpool, L3 3AF, UK
| | - Satyanarayana Somavarapu
- Department of Pharmaceutics, School of Pharmacy, University College London, 29-39 Brunswick Square, London, WC1N 1AX, UK
| | - Pascale Schwinté
- INSERM (French National Institute of Health & Medical Research), "Osteoarticular & Dental Regenerative Nanomedicine" Laboratory, UMR 1109, Faculté de Médecine, F-67085 Strasbourg Cedex. FMTS, France.,Université de Strasbourg, Faculté de Chirurgie Dentaire, 1 place de l'Hôpital, F-67000 Strasbourg, France
| | - Nadia Benkirane-Jessel
- INSERM (French National Institute of Health & Medical Research), "Osteoarticular & Dental Regenerative Nanomedicine" Laboratory, UMR 1109, Faculté de Médecine, F-67085 Strasbourg Cedex. FMTS, France.,Université de Strasbourg, Faculté de Chirurgie Dentaire, 1 place de l'Hôpital, F-67000 Strasbourg, France
| | - Laetitia Keller
- INSERM (French National Institute of Health & Medical Research), "Osteoarticular & Dental Regenerative Nanomedicine" Laboratory, UMR 1109, Faculté de Médecine, F-67085 Strasbourg Cedex. FMTS, France.,Université de Strasbourg, Faculté de Chirurgie Dentaire, 1 place de l'Hôpital, F-67000 Strasbourg, France
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74
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Virlan MJR, Miricescu D, Radulescu R, Sabliov CM, Totan A, Calenic B, Greabu M. Organic Nanomaterials and Their Applications in the Treatment of Oral Diseases. Molecules 2016; 21:E207. [PMID: 26867191 PMCID: PMC6273611 DOI: 10.3390/molecules21020207] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2015] [Revised: 01/20/2016] [Accepted: 01/28/2016] [Indexed: 12/18/2022] Open
Abstract
There is a growing interest in the development of organic nanomaterials for biomedical applications. An increasing number of studies focus on the uses of nanomaterials with organic structure for regeneration of bone, cartilage, skin or dental tissues. Solid evidence has been found for several advantages of using natural or synthetic organic nanostructures in a wide variety of dental fields, from implantology, endodontics, and periodontics, to regenerative dentistry and wound healing. Most of the research is concentrated on nanoforms of chitosan, silk fibroin, synthetic polymers or their combinations, but new nanocomposites are constantly being developed. The present work reviews in detail current research on organic nanoparticles and their potential applications in the dental field.
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Affiliation(s)
- Maria Justina Roxana Virlan
- Department of Biochemistry, Faculty of Dentistry, University of Medicine and Pharmacy Carol Davila, Blvd. EroiiSanitari, No. 8, RO-050474 Bucharest, Romania.
| | - Daniela Miricescu
- Department of Biochemistry, Faculty of Dentistry, University of Medicine and Pharmacy Carol Davila, Blvd. EroiiSanitari, No. 8, RO-050474 Bucharest, Romania.
| | - Radu Radulescu
- Department of Biochemistry, Faculty of Dentistry, University of Medicine and Pharmacy Carol Davila, Blvd. EroiiSanitari, No. 8, RO-050474 Bucharest, Romania.
| | - Cristina M Sabliov
- Agricultural and Biological Engineering Department, Louisiana State University and LSU Ag Center, 149 EB Doran Building, Baton Rouge, LA 70803, USA.
| | - Alexandra Totan
- Department of Biochemistry, Faculty of Dentistry, University of Medicine and Pharmacy Carol Davila, Blvd. EroiiSanitari, No. 8, RO-050474 Bucharest, Romania.
| | - Bogdan Calenic
- Department of Biochemistry, Faculty of Dentistry, University of Medicine and Pharmacy Carol Davila, Blvd. EroiiSanitari, No. 8, RO-050474 Bucharest, Romania.
| | - Maria Greabu
- Department of Biochemistry, Faculty of Dentistry, University of Medicine and Pharmacy Carol Davila, Blvd. EroiiSanitari, No. 8, RO-050474 Bucharest, Romania.
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