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Zhang S, Zhou H, Chen X, Zhu S, Chen D, Luo D, Chen S, Liu W. Microneedle Delivery Platform Integrated with Codelivery Nanoliposomes for Effective and Safe Androgenetic Alopecia Treatment. ACS APPLIED MATERIALS & INTERFACES 2024; 16:15701-15717. [PMID: 38507687 DOI: 10.1021/acsami.3c16608] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/22/2024]
Abstract
Although topical application of minoxidil is a widely used, FDA-approved therapy for androgenetic alopecia (AGA) treatment, it suffers from low bioavailability, the requirement for frequent long-term use, and side effects. With a similar structure as minoxidil, kopexil and kopyrrol are less toxic and have been commercialized, but show an inferior hair regeneration effect compared to minoxidil. Herein, we developed a hyaluronic acid (HA)-based dissolvable microneedles (MNs) delivery platform integrated with kopexil and kopyrrol coencapsulated nanoliposomes (KK-NLPs) to effectively and safely treat AGA. Facilitated by nanoliposomes and MNs, the encapsulated KK-NLPs performed efficient skin penetration and enhanced cellular internalization into human dermal papilla cells. Furthermore, within the target cells, the codelivered kopexil and kopyrrol show synergistic effects by orchestrating an upregulation in the expression of Ki67, β-catenin, vascular endothelial growth factor (VEGF), and CD31. These molecular responses collectively foster cell proliferation, migration, and antioxidative effects, thereby facilitating the expedited progression of hair follicles (HFs) into the anagen phase and promoting peripheral angiogenesis. Notably, the KK-NLPs-integrated MNs treatment group exhibits noteworthy enhanced hair regeneration in vivo, with identical or superior therapeutic effects at a much lower dosage than that of minoxidil. These results suggest the great potential of this kopexil and kopyrrol codelivery nanoliposomes-integrated MNs platform for AGA treatment in a safe and efficient way.
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Affiliation(s)
- Shuting Zhang
- College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Hong Zhou
- College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Xuan Chen
- College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Shasha Zhu
- College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Dan Chen
- National Engineering Research Center for Nanomedicine, Huazhong University of Science and Technology, Wuhan 430075, China
| | - Dan Luo
- National Engineering Research Center for Nanomedicine, Huazhong University of Science and Technology, Wuhan 430075, China
| | - Siyuan Chen
- Research Institute for Biomaterials, Tech Institute for Advanced Materials, College of Materials Science and Engineering, Suqian Advanced Materials Industry Technology Innovation Center, NJTech-BARTY Joint Research Center for Innovative Medical Technology, Nanjing Tech University, Nanjing 211816, China
| | - Wei Liu
- College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, China
- National Engineering Research Center for Nanomedicine, Huazhong University of Science and Technology, Wuhan 430075, China
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Zhao L, Chen S, Xie C, Liang Q, Xu D, Chen W, Xiao X. The fabrication of multifunctional sodium alginate scaffold incorporating ibuprofen-loaded modified PLLA microspheres based on cryogenic 3D printing. JOURNAL OF BIOMATERIALS SCIENCE. POLYMER EDITION 2022; 33:1269-1288. [PMID: 35235492 DOI: 10.1080/09205063.2022.2049059] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/21/2021] [Revised: 02/27/2022] [Accepted: 03/01/2022] [Indexed: 06/14/2023]
Abstract
A strategy to develop a multifunctional sodium alginate personalized scaffold with enhanced mechanical stability, osteogenesis activity and excellent anti-inflammatory activity by cryogenic 3 D printing combined with subsequent crosslinking with Sr2+ is proposed in this study. The ink for 3 D printing was prepared by dispersing modified PLLA droplets containing ibuprofen into sodium alginate aqueous solution using lecithin as stabilizer. The results showed that the drug-loaded microspheres formed from the low-temperature solidifying of the modified PLLA droplets were homogeneously dispersed in sodium alginate substrate, and the scaffold displayed a sustained drug release performance toward ibuprofen which endowed the scaffold with persistent anti-inflammatory effects. In vitro cell culture indicated that the lecithin not only acted as the stabilizer, but also stimulated the proliferation and mineralization of osteoblastic cells on the scaffold. Sr2+-crosslinking improved the mechanical properties and osteogenic activity of the scaffold.
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Affiliation(s)
- Lihua Zhao
- Fujian Provincial Key Laboratory of Advanced Materials Oriented Chemical Engineering, College of Chemistry and Material Science, Fujian Normal University, Fuzhou, Fujian, China
| | - Shunyu Chen
- Fujian Provincial Key Laboratory of Advanced Materials Oriented Chemical Engineering, College of Chemistry and Material Science, Fujian Normal University, Fuzhou, Fujian, China
| | - Chunling Xie
- Fujian Provincial Key Laboratory of Advanced Materials Oriented Chemical Engineering, College of Chemistry and Material Science, Fujian Normal University, Fuzhou, Fujian, China
| | - Qingshuang Liang
- Fujian Provincial Key Laboratory of Advanced Materials Oriented Chemical Engineering, College of Chemistry and Material Science, Fujian Normal University, Fuzhou, Fujian, China
| | - Dian Xu
- Fujian Provincial Key Laboratory of Advanced Materials Oriented Chemical Engineering, College of Chemistry and Material Science, Fujian Normal University, Fuzhou, Fujian, China
| | - Weixin Chen
- Fujian Provincial Key Laboratory of Advanced Materials Oriented Chemical Engineering, College of Chemistry and Material Science, Fujian Normal University, Fuzhou, Fujian, China
| | - Xiufeng Xiao
- Fujian Provincial Key Laboratory of Advanced Materials Oriented Chemical Engineering, College of Chemistry and Material Science, Fujian Normal University, Fuzhou, Fujian, China
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Cao M, Liu C, Li M, Zhang X, Peng L, Liu L, Liao J, Yang J. Recent Research on Hybrid Hydrogels for Infection Treatment and Bone Repair. Gels 2022; 8:306. [PMID: 35621604 PMCID: PMC9140391 DOI: 10.3390/gels8050306] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2022] [Revised: 05/10/2022] [Accepted: 05/12/2022] [Indexed: 11/16/2022] Open
Abstract
The repair of infected bone defects (IBDs) is still a great challenge in clinic. A successful treatment for IBDs should simultaneously resolve both infection control and bone defect repair. Hydrogels are water-swollen hydrophilic materials that maintain a distinct three-dimensional structure, helping load various antibacterial drugs and biomolecules. Hybrid hydrogels may potentially possess antibacterial ability and osteogenic activity. This review summarizes the recent progress of different kinds of antibacterial agents (including inorganic, organic, and natural) encapsulated in hydrogels. Several representative hydrogels of each category and their antibacterial mechanism and effect on bone repair are presented. Moreover, the advantages and disadvantages of antibacterial agent hybrid hydrogels are discussed. The challenge and future research directions are further prospected.
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Affiliation(s)
- Mengjiao Cao
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Department of Cariology and Endodontics, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China; (M.C.); (M.L.); (L.L.)
| | - Chengcheng Liu
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Department of Periodontics, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China;
| | - Mengxin Li
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Department of Cariology and Endodontics, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China; (M.C.); (M.L.); (L.L.)
| | - Xu Zhang
- State Key Laboratory of Oral Diseases, National Clinical Research Centre for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China;
| | - Li Peng
- Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu 610065, China;
| | - Lijia Liu
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Department of Cariology and Endodontics, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China; (M.C.); (M.L.); (L.L.)
| | - Jinfeng Liao
- State Key Laboratory of Oral Diseases, National Clinical Research Centre for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China;
| | - Jing Yang
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Department of Cariology and Endodontics, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China; (M.C.); (M.L.); (L.L.)
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Liu W, Jiao T, Su Y, Wei R, Wang Z, Liu J, Fu N, Sui L. Electrospun porous poly(3-hydroxybutyrate- co-4-hydroxybutyrate)/lecithin scaffold for bone tissue engineering. RSC Adv 2022; 12:11913-11922. [PMID: 35481079 PMCID: PMC9016801 DOI: 10.1039/d2ra01398c] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2022] [Accepted: 04/08/2022] [Indexed: 11/23/2022] Open
Abstract
Bone tissue engineering has emerged as a promising restorative strategy for bone reconstruction and bone defect repair. It is challenging to establish an appropriate scaffold with an excellent porous microstructure for bone defects and thereby promote bone repair. In this study, electrospinning as a simple and efficient technology was employed to fabricate a porous poly(3-hydroxybutyrate-co-4-hydroxybutyrate) (P34HB) scaffold coated with lecithin. The morphology, phase composition, and physical properties of the electrospun P34HB/lec scaffold were characterized. Meanwhile, cellular behaviors of bone marrow mesenchymal stem cells (BMSCs), including proliferation, adhesion, migration, osteogenic differentiation, and related gene expression, were also investigated. Finally, a rat subcutaneous implant model and a calvarial defect model were used to evaluated the biocompatibility and effect of these scaffolds on bone repair, respectively. The in vitro results demonstrated that these electrospun fibers were interwoven with each other to form the porous P34HB/lec scaffold and the addition of lecithin improved the hydrophilicity of the pure P34HB scaffold, enhanced the efficiency of cell migration, and decreased inflammatory response. Furthermore, the in vivo results showed that P34HB/lec scaffold had excellent biocompatibility, improved the vascularization, and promoted the bone regeneration. All these results indicated that nanofibers of P34HB scaffolds in combination with the lecithin could exert a synergistic effect on promoting osteogenesis and regeneration of bone defects; thus, the P34HB scaffold with lecithin showed great application potential for bone tissue engineering.
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Affiliation(s)
- Wei Liu
- Department of Prosthodontics, School & Hospital of Stomatology, Tianjin Medical University Tianjin 30070 China
| | - Tiejun Jiao
- Department of Implant, School & Hospital of Stomatology, Tianjin Medical University Tianjin 30070 China
| | - Yuran Su
- Department of Prosthodontics, School & Hospital of Stomatology, Tianjin Medical University Tianjin 30070 China
| | - Ran Wei
- Department of Prosthodontics, School & Hospital of Stomatology, Tianjin Medical University Tianjin 30070 China
| | - Zheng Wang
- Department of Prosthodontics, School & Hospital of Stomatology, Tianjin Medical University Tianjin 30070 China
| | - Jiacheng Liu
- Department of Prosthodontics, School & Hospital of Stomatology, Tianjin Medical University Tianjin 30070 China
| | - Na Fu
- Department of Implant, School & Hospital of Stomatology, Tianjin Medical University Tianjin 30070 China
| | - Lei Sui
- Department of Prosthodontics, School & Hospital of Stomatology, Tianjin Medical University Tianjin 30070 China
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Facile fabrication of phospholipid-functionalized nanofiber-based barriers with enhanced anti-adhesion efficiency. Colloids Surf B Biointerfaces 2021; 203:111728. [PMID: 33819819 DOI: 10.1016/j.colsurfb.2021.111728] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2020] [Revised: 03/04/2021] [Accepted: 03/24/2021] [Indexed: 11/21/2022]
Abstract
Electrospun nanofibrous membranes (NFMs) have attracted considerable attention as a potential physical barrier for reducing postoperative adhesion. However, no anti-adhesion barrier can completely prevent adhesion formation. In this study, phospholipid-functionalized NFMs were readily fabricated by one-step electrospinning to obtain nanofiber-based barriers with enhanced wettability and anti-adhesion efficiency. The optimized phospholipid NFMs were shown to have a fiber diameter of 831 nm ± 135 nm that is drastically decreasing, high porosity of 87.6 % ± 1.1 %, and superior hydrophilicity. Moreover, the phospholipid NFMs with excellent cytocompatibility exhibited fibroblasts being significantly reduced (≈ 51 %) after incubation of 3 days compared to that of the NFMs (≈ 96 %), confirming long-lasting anti-adhesion capability against fibroblasts. Meanwhile, less cell adhesion and proliferation of Raw 264.7 macrophages on NFM-10Lec indicated its superior anti-inflammatory effects. Thus, the facile phospholipid-functionalized nanofibers provided a promising strategy for anti-adhesion applications.
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Kuncorojakti S, Rodprasert W, Yodmuang S, Osathanon T, Pavasant P, Srisuwatanasagul S, Sawangmake C. Alginate/Pluronic F127-based encapsulation supports viability and functionality of human dental pulp stem cell-derived insulin-producing cells. J Biol Eng 2020; 14:23. [PMID: 32855655 PMCID: PMC7446208 DOI: 10.1186/s13036-020-00246-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2020] [Accepted: 08/13/2020] [Indexed: 11/16/2022] Open
Abstract
BACKGROUND Current approach for diabetes treatment remained several adverse events varied from gastrointestinal to life-threatening symptoms. Regenerative therapy regarding Edmonton protocol has been facing serious limitations involving protocol efficiency and safety. This led to the study for alternative insulin-producing cell (IPC) resource and transplantation platform. In this study, evaluation of encapsulated human dental pulp-derived stem cell (hDPSC)-derived IPCs by alginate (ALG) and pluronic F127-coated alginate (ALGPA) was performed. RESULTS The results showed that ALG and ALGPA preserved hDPSC viability and allowed glucose and insulin diffusion in and out. ALG and ALGPA-encapsulated hDPSC-derived IPCs maintained viability for at least 336 h and sustained pancreatic endoderm marker (NGN3), pancreatic islet markers (NKX6.1, MAF-A, ISL-1, GLUT-2 and INSULIN), and intracellular pro-insulin and insulin expressions for at least 14 days. Functional analysis revealed a glucose-responsive C-peptide secretion of ALG- and ALGPA-encapsulated hDPSC-derived IPCs at 14 days post-encapsulation. CONCLUSION ALG and ALGPA encapsulations efficiently preserved the viability and functionality of hDPSC-derived IPCs in vitro and could be the potential transplantation platform for further clinical application.
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Affiliation(s)
- Suryo Kuncorojakti
- International Graduate Course in Veterinary Science and Technology, Faculty of Veterinary Science, Chulalongkorn University, Bangkok, 10330 Thailand
- Veterinary Stem Cell and Bioengineering Innovation Center (VSCBIC), Veterinary Pharmacology and Stem Cell Research Laboratory, Faculty of Veterinary Science, Chulalongkorn University, Bangkok, 10330 Thailand
| | - Watchareewan Rodprasert
- Veterinary Stem Cell and Bioengineering Innovation Center (VSCBIC), Veterinary Pharmacology and Stem Cell Research Laboratory, Faculty of Veterinary Science, Chulalongkorn University, Bangkok, 10330 Thailand
| | - Supansa Yodmuang
- Research Affairs, Faculty of Medicine, Chulalongkorn University, Bangkok, 10330 Thailand
- Excellence Center for Advanced Therapy Medicinal Products, King Chulalongkorn Memorial Hospital, Bangkok, 10330 Thailand
| | - Thanaphum Osathanon
- Department of Anatomy, Faculty of Dentistry, Chulalongkorn University, Bangkok, 10330 Thailand
- Center of Excellence in Regenerative Dentistry, Faculty of Dentistry, Chulalongkorn University, Bangkok, 10330 Thailand
| | - Prasit Pavasant
- Department of Anatomy, Faculty of Dentistry, Chulalongkorn University, Bangkok, 10330 Thailand
- Center of Excellence in Regenerative Dentistry, Faculty of Dentistry, Chulalongkorn University, Bangkok, 10330 Thailand
| | - Sayamon Srisuwatanasagul
- Department of Veterinary Anatomy, Faculty of Veterinary Science, Chulalongkorn University, Bangkok, 10330 Thailand
| | - Chenphop Sawangmake
- Veterinary Stem Cell and Bioengineering Innovation Center (VSCBIC), Veterinary Pharmacology and Stem Cell Research Laboratory, Faculty of Veterinary Science, Chulalongkorn University, Bangkok, 10330 Thailand
- Veterinary Clinical Stem Cell and Bioengineering Research Unit, Faculty of Veterinary Science, Chulalongkorn University, Bangkok, 10330 Thailand
- Department of Pharmacology, Faculty of Veterinary Science, Chulalongkorn University, Bangkok, 10330 Thailand
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Tamani F, Hamoudi MC, Danede F, Willart J, Siepmann F, Siepmann J. Towards a better understanding of the release mechanisms of caffeine from PLGA microparticles. J Appl Polym Sci 2020. [DOI: 10.1002/app.48710] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Fahima Tamani
- Univ. Lille, Inserm, CHU Lille, U1008, Lille, F‐59000 France
| | | | - Florence Danede
- Univ. Lille, USTL UMET UMR CNRS 8207, F‐59650 Villeneuve d'Ascq France
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Santos-Rosales V, Iglesias-Mejuto A, García-González CA. Solvent-Free Approaches for the Processing of Scaffolds in Regenerative Medicine. Polymers (Basel) 2020; 12:E533. [PMID: 32131405 PMCID: PMC7182956 DOI: 10.3390/polym12030533] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2019] [Revised: 02/12/2020] [Accepted: 02/17/2020] [Indexed: 01/12/2023] Open
Abstract
The regenerative medicine field is seeking novel strategies for the production of synthetic scaffolds that are able to promote the in vivo regeneration of a fully functional tissue. The choices of the scaffold formulation and the manufacturing method are crucial to determine the rate of success of the graft for the intended tissue regeneration process. On one hand, the incorporation of bioactive compounds such as growth factors and drugs in the scaffolds can efficiently guide and promote the spreading, differentiation, growth, and proliferation of cells as well as alleviate post-surgical complications such as foreign body responses and infections. On the other hand, the manufacturing method will determine the feasible morphological properties of the scaffolds and, in certain cases, it can compromise their biocompatibility. In the case of medicated scaffolds, the manufacturing method has also a key effect in the incorporation yield and retained activity of the loaded bioactive agents. In this work, solvent-free methods for scaffolds production, i.e., technological approaches leading to the processing of the porous material with no use of solvents, are presented as advantageous solutions for the processing of medicated scaffolds in terms of efficiency and versatility. The principles of these solvent-free technologies (melt molding, 3D printing by fused deposition modeling, sintering of solid microspheres, gas foaming, and compressed CO2 and supercritical CO2-assisted foaming), a critical discussion of advantages and limitations, as well as selected examples for regenerative medicine purposes are herein presented.
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Affiliation(s)
| | | | - Carlos A. García-González
- Department of Pharmacology, Pharmacy and Pharmaceutical Technology, I+D Farma group (GI-1645), Faculty of Pharmacy, Health Research Institute of Santiago de Compostela (IDIS), Agrupación Estratégica de Materiales (AeMAT), Universidade de Santiago de Compostela, E-15782 Santiago de Compostela, Spain; (V.S.-R.); (A.I.-M.)
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Kuncorojakti S, Srisuwatanasagul S, Kradangnga K, Sawangmake C. Insulin-Producing Cell Transplantation Platform for Veterinary Practice. Front Vet Sci 2020; 7:4. [PMID: 32118053 PMCID: PMC7028771 DOI: 10.3389/fvets.2020.00004] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2019] [Accepted: 01/06/2020] [Indexed: 12/14/2022] Open
Abstract
Diabetes mellitus (DM) remains a global concern in both human and veterinary medicine. Type I DM requires prolonged and consistent exogenous insulin administration to address hyperglycemia, which can increase the risk of diabetes complications such as retinopathy, nephropathy, neuropathy, and heart disorders. Cell-based therapies have been successful in human medicine using the Edmonton protocol. These therapies help maintain the production of endogenous insulin and stabilize blood glucose levels and may possibly be adapted to veterinary clinical practice. The limited number of cadaveric pancreas donors and the long-term use of immunosuppressive agents are the main obstacles for this protocol. Over the past decade, the development of potential therapies for DM has mainly focused on the generation of effective insulin-producing cells (IPCs) from various sources of stem cells that can be transplanted into the body. Another successful application of stem cells in type I DM therapies is transplanting generated IPCs. Encapsulation can be an alternative strategy to protect IPCs from rejection by the body due to their immunoisolation properties. This review summarizes current concepts of IPCs and encapsulation technology for veterinary clinical application and proposes a potential stem-cell-based platform for veterinary diabetic regenerative therapy.
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Affiliation(s)
- Suryo Kuncorojakti
- Veterinary Stem Cell and Bioengineering Innovation Center (VSCBIC), Veterinary Pharmacology and Stem Cell Research Laboratory, Faculty of Veterinary Science, Chulalongkorn University, Bangkok, Thailand.,Department of Veterinary Anatomy, Faculty of Veterinary Medicine, Universitas Airlangga, Surabaya, Indonesia
| | - Sayamon Srisuwatanasagul
- Department of Anatomy, Faculty of Veterinary Science, Chulalongkorn University, Bangkok, Thailand
| | - Krishaporn Kradangnga
- Department of Surgery, Faculty of Veterinary Science, Chulalongkorn University, Bangkok, Thailand
| | - Chenphop Sawangmake
- Veterinary Stem Cell and Bioengineering Innovation Center (VSCBIC), Veterinary Pharmacology and Stem Cell Research Laboratory, Faculty of Veterinary Science, Chulalongkorn University, Bangkok, Thailand.,Veterinary Clinical Stem Cell and Bioengineering Research Unit, Faculty of Veterinary Science, Chulalongkorn University, Bangkok, Thailand.,Department of Pharmacology, Faculty of Veterinary Science, Chulalongkorn University, Bangkok, Thailand
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An in vitro assessment and comparative effectiveness of silanized-glutaraldehyde functionalized titanium surfaces with phosphatidylcholine and type I collagen grafts. Dent Mater 2019; 36:320-328. [PMID: 31864675 DOI: 10.1016/j.dental.2019.12.002] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2019] [Revised: 12/03/2019] [Accepted: 12/04/2019] [Indexed: 11/20/2022]
Abstract
OBJECTIVE This study aims to evaluate sequence-modified Ti surfaces functionalized with silanized glutaraldehyde and further grafted with the active biomolecules of phosphatidylcholine and type I collagen (COL I). METHODS The properties of the functional surfaces were investigated by various surface analysis techniques and characterized their capability in osteogenic cell attachment, differentiation, and mineralization in vitro. RESULTS The Ti surfaces grafted with phosphatidylcholine and COL I effectively improved the hydrophilicity. In addition, an effect of COL I concentrations (higher than 2.5μg/mL) do not stimulate subsequent alkaline phosphatase (ALP) activity during osteogenesis in vitro. However, the result is different in phosphatidylcholine, that is, as the concentration of phosphatidylcholine increased enhances subsequent osteogenetic properties. The Ti groups with bioactive molecules affected cell characteristics in vitro in contrast to the controlled Ti group. The proliferation and differentiation levels of osteoprogenetor cells were enhanced and ALP was strongly expressed in the groups grafted with phosphatidylcholine and COL I. SIGNIFICANCE This modification promotes progenitor bone cell adhesion, proliferation, and differentiation and thus drastically improves the success rate for implant modification by accelerating surface osseointegration.
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Zhang J, Chang P, Zhang C, Xiong G, Luo H, Zhu Y, Ren K, Yao F, Wan Y. Immobilization of lecithin on bacterial cellulose nanofibers for improved biological functions. REACT FUNCT POLYM 2015. [DOI: 10.1016/j.reactfunctpolym.2015.05.001] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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12
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Parent M, Boudier A, Fries I, Gostyńska A, Rychter M, Lulek J, Leroy P, Gaucher C. Nitric oxide-eluting scaffolds and their interaction with smooth muscle cells in vitro. J Biomed Mater Res A 2015; 103:3303-11. [PMID: 25809572 DOI: 10.1002/jbm.a.35464] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2014] [Revised: 03/06/2015] [Accepted: 03/18/2015] [Indexed: 12/28/2022]
Abstract
Fabrication of scaffolds loaded with nitric oxide (NO) donors (S-nitrosoglutathione, GSNO, and isosorbide mononitrate, ISMN) with suitable cell compatibility and optimized properties for tissue-engineering applications is reported using "in situ" technique. Based on FDA-approved polymer, solvent and dosage forms, this gentle process allowed the incorporation of the GSNO labile drug into scaffolds made of either poly(lactide-co-glycolide) (PLGA) or PLGA/poly(ɛ-caprolactone) (PCL) blend. During scaffolds manufacturing process including washing cycles, NO donors were leached from scaffolds. However, GSNO and ISMN concentrations in the last washing medium (10(-7) M and 10(-4) M, respectively) were in the range of cell suitability for tissue engineering. Further morphological analyses indicated that smoother surfaces with fewer but bigger pores (compatible with cell penetration and ingrowth) were obtained with PLGA in comparison with PLGA/PCL scaffolds. Among all tested matrices, only unloaded PLGA and GSNO-loaded PLGA/PCL exhibited intermediate cell anchorage, with mitochondrial activity close to the control and an increase in protein content, a prognostic for scaffold cell colonization, defining them as promising candidates. Deeper analyses of these two scaffolds looking at intracellular redox balance through reactive oxygen species production, glutathione, S-nitrosothiols, and nitrite ions content exhibited GSNO-loaded PLGA/PCL as the best of all tested 3D scaffolds for tissue engineering.
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Affiliation(s)
- Marianne Parent
- Faculté De Pharmacie, Université De Lorraine, CITHEFOR EA 3452, BP 80403, Nancy Cedex, F-54001, France
| | - Ariane Boudier
- Faculté De Pharmacie, Université De Lorraine, CITHEFOR EA 3452, BP 80403, Nancy Cedex, F-54001, France
| | - Isabelle Fries
- Faculté De Pharmacie, Université De Lorraine, CITHEFOR EA 3452, BP 80403, Nancy Cedex, F-54001, France
| | - Aleksandra Gostyńska
- Faculté De Pharmacie, Université De Lorraine, CITHEFOR EA 3452, BP 80403, Nancy Cedex, F-54001, France.,Department of Pharmaceutical Technology, Faculty of Pharmacy, Poznan University of Medical Sciences, Poland
| | - Marek Rychter
- Faculté De Pharmacie, Université De Lorraine, CITHEFOR EA 3452, BP 80403, Nancy Cedex, F-54001, France.,Department of Pharmaceutical Technology, Faculty of Pharmacy, Poznan University of Medical Sciences, Poland
| | - Janina Lulek
- Department of Pharmaceutical Technology, Faculty of Pharmacy, Poznan University of Medical Sciences, Poland
| | - Pierre Leroy
- Faculté De Pharmacie, Université De Lorraine, CITHEFOR EA 3452, BP 80403, Nancy Cedex, F-54001, France
| | - Caroline Gaucher
- Faculté De Pharmacie, Université De Lorraine, CITHEFOR EA 3452, BP 80403, Nancy Cedex, F-54001, France
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Kalhapure RS, Suleman N, Mocktar C, Seedat N, Govender T. Nanoengineered drug delivery systems for enhancing antibiotic therapy. J Pharm Sci 2014; 104:872-905. [PMID: 25546108 DOI: 10.1002/jps.24298] [Citation(s) in RCA: 126] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2014] [Revised: 11/07/2014] [Accepted: 11/07/2014] [Indexed: 12/12/2022]
Abstract
Formulation scientists are recognizing nanoengineered drug delivery systems as an effective strategy to overcome limitations associated with antibiotic drug therapy. Antibiotics encapsulated into nanodelivery systems will contribute to improved management of patients with various infectious diseases and to overcoming the serious global burden of antibiotic resistance. An extensive review of several antibiotic-loaded nanocarriers that have been formulated to target drugs to infectious sites, achieve controlled drug release profiles, and address formulation challenges, such as low-drug entrapment efficiencies, poor solubility and stability is presented in this paper. The physicochemical properties and the in vitro/in vivo performances of various antibiotic-loaded delivery systems, such as polymeric nanoparticles, micelles, dendrimers, liposomes, solid lipid nanoparticles, lipid-polymer hybrid nanoparticles, nanohybirds, nanofibers/scaffolds, nanosheets, nanoplexes, and nanotubes/horn/rods and nanoemulsions, are highlighted and evaluated. Future studies that will be essential to optimize formulation and commercialization of these antibiotic-loaded nanosystems are also identified. The review presented emphasizes the significant formulation progress achieved and potential that novel nanoengineered antibiotic drug delivery systems have for enhancing the treatment of patients with a range of infections.
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Affiliation(s)
- Rahul S Kalhapure
- Discipline of Pharmaceutical Sciences, School of Health Sciences, University of KwaZulu-Natal, Durban, 4000, South Africa
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14
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Mehta AS, Singh BK, Singh N, Archana D, Snigdha K, Harniman R, Rahatekar SS, Tewari RP, Dutta PK. Chitosan silk-based three-dimensional scaffolds containing gentamicin-encapsulated calcium alginate beads for drug administration and blood compatibility. J Biomater Appl 2014; 29:1314-25. [DOI: 10.1177/0885328214563148] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
In the present study gentamicin was encapsulated within calcium alginate beads and incorporated into porous chitosan, gelatin, double-hybrid silk fibroin, chitosan/gelatin and double-hybrid silk fibroin/chitosan scaffolds. Physiochemical, morphological and biological properties of fabricated amenable model systems were evaluated, revealing hemocompatible nature of double-hybrid silk fibroin/chitosan and double-hybrid silk fibroin scaffolds of hemolysis %<5 and porosity >85%. Fourier transform infrared results confirmed the blend formation and scanning electron microscope images showed good interconnectivity. Double-hybrid silk fibroin/chitosan-blended scaffold shows higher compressive strength and compressive modulus than other fabricated scaffolds. A comparative drug release profile of fabricated scaffolds revealed that double-hybrid silk fibroin/chitosan scaffold is a pertinent model system because of its prolonged drug release, optimal hemocompatability and high compressive modulus.
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Affiliation(s)
- Abijeet Singh Mehta
- Department of Applied Mechanics (Biomedical Engineering), Motilal Nehru National Institute of Technology, Allahabad, India
| | - Brijesh K Singh
- Department of Chemistry, Motilal Nehru National Institute of Technology, Allahabad, India
| | - Nandita Singh
- School of Cellular & Molecular Medicine, University of Bristol, Bristol, UK
| | - D Archana
- Department of Chemistry, Motilal Nehru National Institute of Technology, Allahabad, India
| | - Kirti Snigdha
- Department of Applied Mechanics (Biomedical Engineering), Motilal Nehru National Institute of Technology, Allahabad, India
| | | | - Sameer S Rahatekar
- Advanced Composites Centre for Innovation and Science (ACCIS), Aerospace Engineering, University of Bristol, Bristol, UK
| | - RP Tewari
- Department of Applied Mechanics (Biomedical Engineering), Motilal Nehru National Institute of Technology, Allahabad, India
| | - PK Dutta
- Department of Chemistry, Motilal Nehru National Institute of Technology, Allahabad, India
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15
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Scaffold-based anti-infection strategies in bone repair. Ann Biomed Eng 2014; 43:515-28. [PMID: 25476163 DOI: 10.1007/s10439-014-1205-3] [Citation(s) in RCA: 84] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2014] [Accepted: 11/26/2014] [Indexed: 12/14/2022]
Abstract
Bone fractures and non-union defects often require surgical intervention where biomaterials are used to correct the defect, and approximately 10% of these procedures are compromised by bacterial infection. Currently, treatment options are limited to sustained, high doses of antibiotics and surgical debridement of affected tissue, leaving a significant, unmet need for the development of therapies to combat device-associated biofilm and infections. Engineering implants to prevent infection is a desirable material characteristic. Tissue engineered scaffolds for bone repair provide a means to both regenerate bone and serve as a base for adding antimicrobial agents. Incorporating anti-infection properties into regenerative medicine therapies could improve clinical outcomes and reduce the morbidity and mortality associated with biomaterial implant-associated infections. This review focuses on current animal models and technologies available to assess bone repair in the context of infection, antimicrobial agents to fight infection, the current state of antimicrobial scaffolds, and future directions in the field.
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16
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Huang W, Li X, Shi X, Lai C. Microsphere based scaffolds for bone regenerative applications. Biomater Sci 2014; 2:1145-1153. [DOI: 10.1039/c4bm00161c] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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17
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Dahl M, Jørgensen NR, Hørberg M, Pinholt EM. Carriers in mesenchymal stem cell osteoblast mineralization—State-of-the-art. J Craniomaxillofac Surg 2014; 42:41-7. [DOI: 10.1016/j.jcms.2013.01.047] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2012] [Revised: 01/28/2013] [Accepted: 01/29/2013] [Indexed: 12/21/2022] Open
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18
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Dahl M, Syberg S, Jørgensen NR, Pinholt EM. Adipose derived mesenchymal stem cells – Their osteogenicity and osteoblast in vitro mineralization on titanium granule carriers. J Craniomaxillofac Surg 2013; 41:e213-20. [DOI: 10.1016/j.jcms.2013.01.021] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2012] [Revised: 12/21/2012] [Accepted: 01/09/2013] [Indexed: 11/28/2022] Open
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19
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Shi X, Zhao Y, Zhou J, Chen S, Wu H. One-step generation of engineered drug-laden poly(lactic-co-glycolic acid) micropatterned with Teflon chips for potential application in tendon restoration. ACS APPLIED MATERIALS & INTERFACES 2013; 5:10583-10590. [PMID: 24111820 DOI: 10.1021/am402388k] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Regulating cellular behaviors such as cellular spatial arrangement and cellular phenotype is critical for managing tissue microstructure and biological function for engineered tissue regeneration. We herein pattern drug-laden poly(lactic-co-glycolic acid) (PLGA) into grooves using novel Teflon stamps (that possess excellent properties of resistance to harsh organic solvents and molecular adsorption) for engineered tendon-repair therapeutics. The drug release and biological properties of melatonin-laden PLGA grooved micropatterns are investigated. The results reveal that fibroblasts cultured on the melatonin-laden PLGA groove micropatterns not only display significant cell alignment that mimics the cell behavior in native tendon, but also promote the secretion of a major extracellular matrix in tendon, type I collagen, indicating great potential for the engineering of functional tendon regeneration.
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Affiliation(s)
- Xuetao Shi
- WPI Advanced Institute for Materials Research, Tohoku University , 2-1-1 Katahira, Aoba-ku, Sendai, 980-8577, Japan
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20
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Bao M, Zhou Q, Dong W, Lou X, Zhang Y. Ultrasound-Modulated Shape Memory and Payload Release Effects in a Biodegradable Cylindrical Rod Made of Chitosan-Functionalized PLGA Microspheres. Biomacromolecules 2013; 14:1971-9. [DOI: 10.1021/bm4003464] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Min Bao
- State Key Laboratory for Modification of Chemical Fibers
and Polymer Materials, Donghua University, Shanghai 201620, China
- College of Chemistry,
Chemical Engineering and Biotechnology, Donghua University, Shanghai 201620, China
| | - Qihui Zhou
- State Key Laboratory for Modification of Chemical Fibers
and Polymer Materials, Donghua University, Shanghai 201620, China
- College of Chemistry,
Chemical Engineering and Biotechnology, Donghua University, Shanghai 201620, China
| | - Wen Dong
- State Key Laboratory for Modification of Chemical Fibers
and Polymer Materials, Donghua University, Shanghai 201620, China
- College of Chemistry,
Chemical Engineering and Biotechnology, Donghua University, Shanghai 201620, China
| | - Xiangxin Lou
- State Key Laboratory for Modification of Chemical Fibers
and Polymer Materials, Donghua University, Shanghai 201620, China
- College of Chemistry,
Chemical Engineering and Biotechnology, Donghua University, Shanghai 201620, China
| | - Yanzhong Zhang
- State Key Laboratory for Modification of Chemical Fibers
and Polymer Materials, Donghua University, Shanghai 201620, China
- College of Chemistry,
Chemical Engineering and Biotechnology, Donghua University, Shanghai 201620, China
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21
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Zhang M, Wang K, Wang Z, Xing B, Zhao Q, Kong D. Small-diameter tissue engineered vascular graft made of electrospun PCL/lecithin blend. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2012; 23:2639-2648. [PMID: 22815052 DOI: 10.1007/s10856-012-4721-4] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/22/2011] [Accepted: 07/04/2012] [Indexed: 06/01/2023]
Abstract
In this study, natural lecithin was incorporated into cholesterol-poly(ε-caprolactone) (Chol-PCL) by solution blending in order to modify the performance of the hydrophobic and bio-inert PCL. The fibrous Chol-PCL/lecithin membranes were fabricated by electrospinning, and the surface morphology and properties were characterized by scanning electron microscopy, X-ray photoelectron spectroscopy, static water contact angle, and mechanical tensile testing. The blood compatibility of the scaffolds was evaluated by in vitro hemolysis assay. The cytocompatibility of the scaffolds was investigated by cell adhesion and proliferation using bone-marrow mesenchymal stem cells (MSCs). Subcutaneous implantation was also performed to evaluate the in vivo inflammatory reaction. The tubular tissue-engineered vascular graft (TEVG) was further constructed by rolling cell sheet comprising fibrous membrane and MSCs. Furthermore, endothelial cells (ECs) were seeded onto the lumen of the graft with the aim to form vascular endothelium. The preliminary results indicate that electrospun Chol-PCL/lecithin scaffolds show improved hemocompatibility and cytocompatibility compared with neat Chol-PCL, and combining the Chol-PCL/lecithin fibrous scaffold with MSCs and ECs with well controlled distribution is a promising strategy for constructing TEVGs.
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Affiliation(s)
- Min Zhang
- Key Laboratory of Bioactive Materials, Ministry of Education, College of Life Sciences, Nankai University, Tianjin, China
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22
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Wang H, Leeuwenburgh SCG, Li Y, Jansen JA. The use of micro- and nanospheres as functional components for bone tissue regeneration. TISSUE ENGINEERING PART B-REVIEWS 2011; 18:24-39. [PMID: 21806489 DOI: 10.1089/ten.teb.2011.0184] [Citation(s) in RCA: 110] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
During the last decade, the use of micro- and nanospheres as functional components for bone tissue regeneration has drawn increasing interest. Scaffolds comprising micro- and nanospheres display several advantages compared with traditional monolithic scaffolds that are related to (i) an improved control over sustained delivery of therapeutic agents, signaling biomolecules and even pluripotent stem cells, (ii) the introduction of spheres as stimulus-sensitive delivery vehicles for triggered release, (iii) the use of spheres to introduce porosity and/or improve the mechanical properties of bulk scaffolds by acting as porogen or reinforcement phase, (iv) the use of spheres as compartmentalized microreactors for dedicated biochemical processes, (v) the use of spheres as cell delivery vehicle, and, finally, (vi) the possibility of preparing injectable and/or moldable formulations to be applied by using minimally invasive surgery. This article focuses on recent developments with regard to the use of micro- and nanospheres for bone regeneration by categorizing micro-/nanospheres by material class (polymers, ceramics, and composites) as well as summarizing the main strategies that employ these spheres to improve the functionality of scaffolds for bone tissue engineering.
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Affiliation(s)
- Huanan Wang
- Department of Biomaterials, Radboud University Nijmegen Medical Center, Nijmegen, The Netherlands
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23
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Drug-carrier/hydrogel scaffold for controlled growth of cells. Eur J Pharm Biopharm 2011; 78:346-54. [DOI: 10.1016/j.ejpb.2011.01.015] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2010] [Revised: 01/20/2011] [Accepted: 01/27/2011] [Indexed: 11/22/2022]
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24
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Choi J, Kim K, Kim T, Liu G, Bar-Shir A, Hyeon T, McMahon MT, Bulte JWM, Fisher JP, Gilad AA. Multimodal imaging of sustained drug release from 3-D poly(propylene fumarate) (PPF) scaffolds. J Control Release 2011; 156:239-45. [PMID: 21763735 DOI: 10.1016/j.jconrel.2011.06.035] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2010] [Revised: 06/07/2011] [Accepted: 06/24/2011] [Indexed: 12/30/2022]
Abstract
The potential of poly(propylene fumarate) (PPF) scaffolds as drug carriers was investigated and the kinetics of the drug release quantified using magnetic resonance imaging (MRI) and optical imaging. Three different MR contrast agents were used for coating PPF scaffolds. Initially, iron oxide (IONP) or manganese oxide nanoparticles (MONP) carrying the anti-cancer drug doxorubicin were absorbed or mixed with the scaffold and their release into solution at physiological conditions was measured with MRI and optical imaging. A slow (hours to days) and functional release of the drug molecules into the surrounding solution was observed. In order to examine the release properties of proteins and polypeptides, protamine sulfate, a chemical exchange saturation transfer (CEST) MR contrast agent, was attached to the scaffold. Protamine sulfate showed a steady release rate for the first 24h. Due to its biocompatibility, versatile drug-loading capability and constant release rate, the porous PPF scaffold has potential in various biomedical applications, including MR-guided implantation of drug-dispensing materials, development of drug carrying vehicles, and drug delivery for tumor treatment.
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Affiliation(s)
- Jonghoon Choi
- Russell H. Morgan Department of Radiology and Radiological Science, Division of MR Research, The Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
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25
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Pensabene V, Taccola S, Ricotti L, Ciofani G, Menciassi A, Perut F, Salerno M, Dario P, Baldini N. Flexible polymeric ultrathin film for mesenchymal stem cell differentiation. Acta Biomater 2011; 7:2883-91. [PMID: 21421086 DOI: 10.1016/j.actbio.2011.03.013] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2010] [Revised: 03/03/2011] [Accepted: 03/10/2011] [Indexed: 11/27/2022]
Abstract
Ultrathin films (also called nanofilms) are two-dimensional (2-D) polymeric structures with potential application in biology, biotechnology, cosmetics and tissue engineering. Since they can be handled in liquid form with micropipettes or tweezers they have been proposed as flexible systems for cell adhesion and proliferation. In particular, with the aim of designing a novel patch for bone or tendon repair and healing, in this work the biocompatibility, adhesion and proliferation activity of Saos-2, MRC-5 and human and rat mesenchymal stem cells on poly(lactic acid) nanofilms were evaluated. The nanofilms did not impair the growth and differentiation of osteoblasts and chondrocytes. Moreover, nanofilm adhesion to rabbit joints was evident under ex vivo conditions.
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26
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Nirmala R, Park HM, Navamathavan R, Kang HS, El-Newehy MH, Kim HY. Lecithin blended polyamide-6 high aspect ratio nanofiber scaffolds via electrospinning for human osteoblast cell culture. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2011. [DOI: 10.1016/j.msec.2010.11.013] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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27
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Sintered microsphere scaffolds for controlled release and tissue engineering. Pharm Res 2011; 28:1224-8. [PMID: 21213022 DOI: 10.1007/s11095-010-0359-4] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2010] [Accepted: 12/20/2010] [Indexed: 01/27/2023]
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28
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Liu G, Wu C, Fan W, Miao X, Sin DC, Crawford R, Xiao Y. The effects of bioactive akermanite on physiochemical, drug-delivery, and biological properties of poly(lactide-co-glycolide) beads. J Biomed Mater Res B Appl Biomater 2011; 96:360-8. [DOI: 10.1002/jbm.b.31779] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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29
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Wang Y, Shi X, Ren L, Yao Y, Wang DA. In vitro osteogenesis of synovium mesenchymal cells induced by controlled release of alendronate and dexamethasone from a sintered microspherical scaffold. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2010; 21:1227-38. [PMID: 20507717 DOI: 10.1163/092050609x12481751806259] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
In vitro osteogenesis was successfully achieved with synovium-derived mesenchymal stem cells (SMSCs), which intrinsically have a strong chondrogenic tendency, by in situ release of alendronate (AL) and dexamethasone (Dex) from poly(lactic-co-glycolic acid) (PLGA)/hydroxyapatite (HA) sintered microspherical scaffold (PLGA/HA-SMS). Cumulative release profiles of AL and Dex from PLGA/HA-SMS and the influence on SMSCs osteogenic commitment were investigated. SMSCs seeded in Al-/Dex-loaded PLGA/HA-SMS (PLGA/HA-Com-SMS) exhibited significant osteogenic differentiation, as indicated by high yields of alkaline phosphatase (ALP) and bone calcification. In addition, mechanical properties (compressional) of PLGA/HA-Com-SMSs were also evaluated and approved. In conclusion, by promoting osteogenic commitment of SMSCs in vitro, this newly designed controlled-release system opens a new door to bone reparation and regeneration.
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Affiliation(s)
- Yingjun Wang
- School of Materials Science and Engineering, South China University of Technology, Guangzhou 510641, P. R. China.
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30
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Liu H, Zhang L, Shi P, Zou Q, Zuo Y, Li Y. Hydroxyapatite/polyurethane scaffold incorporated with drug-loaded ethyl cellulose microspheres for bone regeneration. J Biomed Mater Res B Appl Biomater 2010; 95:36-46. [DOI: 10.1002/jbm.b.31680] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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31
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Yang C, Yuan G, Zhang J, Tang Z, Zhang X, Dai K. Effects of magnesium alloys extracts on adult human bone marrow-derived stromal cell viability and osteogenic differentiation. Biomed Mater 2010; 5:045005. [PMID: 20571183 DOI: 10.1088/1748-6041/5/4/045005] [Citation(s) in RCA: 67] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
In this study, adult human bone marrow-derived stromal cells (hBMSCs) were cultured in extracts of magnesium (Mg) and the Mg alloys AZ91D and NZ30K for 12 days. We studied the indirect effects of Mg alloys on hBMSC viability. Alkaline phosphatase activity and the expression of osteogenic differentiation marker genes were used to evaluate the effects of the Mg alloys on the osteogenic differentiation of hBMSCs. The results indicate that <or=10 mM concentration of Mg in the extracts did not inhibit the viability and osteogenic differentiation of hBMSCs. However, the results suggest that the high pH of the extracts, which is a result of the rapid corrosion of Mg and the Mg alloys, is unfavorable to the viability and osteogenic differentiation of hBMSCs.
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Affiliation(s)
- Chunxi Yang
- Department of Orthopedics, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, 639 Zhizaoju Road, Shanghai 200011, People's Republic of China
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Wang Y, Shi X, Ren L, Yao Y, Zhang F, Wang DA. Poly(lactide-co-glycolide)/titania composite microsphere-sintered scaffolds for bone tissue engineering applications. J Biomed Mater Res B Appl Biomater 2010; 93:84-92. [PMID: 20091906 DOI: 10.1002/jbm.b.31561] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
The objective of this study was to synthesize and characterize novel three-dimensional porous scaffolds made of poly(lactic-co-glycolic acid) (PLGA)/nano-TiO(2)-particle composite microspheres for potential bone repair applications. The introduction of TiO(2) component has been proven capable of largely enhancing mechanical properties of PLGA/TiO(2) microsphere-sintered scaffold ("PLGA/TiO(2)-SMS"). In addition, composite nano-TiO(2) additives are capable of inducing an increased arrest of adhesive proteins from the environment, which benefits cell attachment onto the scaffolds. Osteoblast proliferation and maturation were evaluated by MTT assay, alkaline phosphatase (ALP) activity, and bony calcification assay. The results indicate that osteoblasts cultured on the composite scaffolds with different TiO(2) content (0, 0.1, and 0.3 g/1 g PLGA) display increased cell proliferation compared with pure PLGA scaffold. When cultured on composite scaffolds, osteoblasts also exhibit significantly enhanced ALP activity and higher calcium secretion, with respect to those on the pure PLGA scaffolds. Taken together, PLGA/TiO(2)-SMSs deserve attention utilizing for potential bone-repairing therapeutics.
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Affiliation(s)
- Yingjun Wang
- School of Materials Science and Engineering, South China University of Technology, Guangzhou 510641, China.
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PHBV microspheres--PLGA matrix composite scaffold for bone tissue engineering. Biomaterials 2010; 31:4278-85. [PMID: 20199806 DOI: 10.1016/j.biomaterials.2010.01.059] [Citation(s) in RCA: 90] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2009] [Accepted: 01/12/2010] [Indexed: 11/23/2022]
Abstract
Polymer scaffolds, particularly in the form of microspheres, have been employed to support cells growth and deliver drugs or growth factors in tissue engineering. In this study, we have established a scaffold by embedding poly (beta-hydroxybutyrate-co-beta-hydroxyvalerate) (PHBV) microspheres into poly (L-lactic-co-glycolic acid) (PLGA) matrix, according to their different solubility in acetone, with the aim of repairing bone defects. PLGA/PHBV scaffolds had good pore parameters, for example, the porosity of PLGA/30% PHBV scaffold can reach to 81.273 +/- 2.192%. Besides, the pore size distribution of the model was evaluated and the results revealed that the pore size mainly distributed between 50 mum and 200 mum. With increasing the amount of PHBV microspheres, the compressive strength of the PLGA/PHBV scaffold enhanced. The morphology of the hybrid scaffold was rougher than that of pure PLGA scaffold, which had no significant effect on the cell behavior. The in vitro evaluation suggested that the model is suitable as a scaffold for engineering bone tissue, and has the potential for further applications in drug delivery system.
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Shi X, Ren L, Tian M, Yu J, Huang W, Du C, Wang DA, Wang Y. In vivo and in vitro osteogenesis of stem cells induced by controlled release of drugs from microspherical scaffolds. ACTA ACUST UNITED AC 2010. [DOI: 10.1039/c0jm00976h] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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35
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Shi X, Wang Y, Varshney RR, Ren L, Gong Y, Wang DA. Microsphere-based drug releasing scaffolds for inducing osteogenesis of human mesenchymal stem cells in vitro. Eur J Pharm Sci 2009; 39:59-67. [PMID: 19895885 DOI: 10.1016/j.ejps.2009.10.012] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2009] [Revised: 10/15/2009] [Accepted: 10/25/2009] [Indexed: 01/09/2023]
Abstract
In this study, in vitro osteogenesis was successfully achieved in human mesenchymal stem cells (hMSCs) by controlled release of the osteogenesis-inducing drugs dexamethasone, ascorbic acid (AA) and beta-glycerophosphate (GP) from poly(lactic-co-glycolic acid) (PLGA) sintered microsphere scaffolds (SMS). We investigated the osteogenesis of human MSCs (hMSCs) on dexamethasone laden PLGA-SMS (PLGA-Dex-SMS), and dexamethasone, AA and GP laden PLGA-SMS (PLGA-Com-SMS). hMSCs cultured on the microsphere systems, which act as drug release vehicles and also promote cell growth/tissue formation-displayed a strong osteogenic commitment locally. The osteogenic commitment of hMSCs on the scaffolds were verified by alkaline phosphatase (ALP) activity assay, calcium secretion assay, real-time PCR and immunohistochemistry analysis. The results indicated hMSCs cultured on PLGA-Com-SMS exhibited superior osteogenic differentiation owing to significantly high phenotypic expression of typical osteogenic genes-osteocalcin (OC), type I collagen, alkaline phosphatase (ALP), and Runx-2/Cbfa-1, and protein secretion of bone-relevant markers such as osteoclast and type I collagen when compared with PLGA-Dex-SMS. In conclusion, by promoting osteogenic development of hMSCs in vitro, this newly designed controlled release system opens a new door to bone reparation and regeneration.
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Affiliation(s)
- Xuetao Shi
- School of Materials Science and Engineering, South China University of Technology, Guangzhou 510641, China
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36
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Wang Y, Shi X, Ren L, Wang C, Wang DA. Porous poly (lactic-co-glycolide) microsphere sintered scaffolds for tissue repair applications. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2009. [DOI: 10.1016/j.msec.2009.07.018] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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