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Iqbal MH, Kerdjoudj H, Boulmedais F. Protein-based layer-by-layer films for biomedical applications. Chem Sci 2024; 15:9408-9437. [PMID: 38939139 PMCID: PMC11206333 DOI: 10.1039/d3sc06549a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2023] [Accepted: 05/03/2024] [Indexed: 06/29/2024] Open
Abstract
The surface engineering of biomaterials is crucial for their successful (bio)integration by the body, i.e. the colonization by the tissue-specific cell, and the prevention of fibrosis and/or bacterial colonization. Performed at room temperature in an aqueous medium, the layer-by-layer (LbL) coating method is based on the alternating deposition of macromolecules. Versatile and simple, this method allows the functionalization of surfaces with proteins, which play a crucial role in several biological mechanisms. Possessing intrinsic properties (cell adhesion, antibacterial, degradable, etc.), protein-based LbL films represent a powerful tool to control bacterial and mammalian cell fate. In this article, after a general introduction to the LbL technique, we will focus on protein-based LbL films addressing different biomedical issues/domains, such as bacterial infection, blood contacting surfaces, mammalian cell adhesion, drug and gene delivery, and bone and neural tissue engineering. We do not consider biosensing applications or electrochemical aspects using specific proteins such as enzymes.
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Affiliation(s)
- Muhammad Haseeb Iqbal
- Université de Strasbourg, CNRS, Institut Charles Sadron UPR 22, Strasbourg Cedex 2 67034 France
| | | | - Fouzia Boulmedais
- Université de Strasbourg, CNRS, Institut Charles Sadron UPR 22, Strasbourg Cedex 2 67034 France
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Li Y, Vrana NE, Letellier B, Lavalle P, Guilbaud-Chéreau C. The use of supramolecular systems in biomedical applications for antimicrobial properties, biocompatibility, and drug delivery. Biomed Mater 2024; 19:042005. [PMID: 38729193 DOI: 10.1088/1748-605x/ad49f4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2023] [Accepted: 05/10/2024] [Indexed: 05/12/2024]
Abstract
Supramolecular chemistry is versatile for developing stimuli-responsive, dynamic and multifunctional structures. In the context of biomedical engineering applications, supramolecular assemblies are particularly useful as coatings for they can closely mimic the natural structure and organisation of the extracellular matrix (ECM), they can also fabricate other complex systems like drug delivery systems and bioinks. In the current context of growing medical device-associated complications and the developments in the controlled drug delivery and regenerative medicine fields, supramolecular assemblies are becoming an indispensable part of the biomedical engineering arsenal. This review covers the different supramolecular assemblies in different biomedical applications with a specific focus on antimicrobial coatings, coatings that enhance biocompatibility, surface modifications on implantable medical devices, systems that promote therapeutic efficiency in cancer therapy, and the development of bioinks. The introduced supramolecular systems include multilayer coating by polyelectrolytes, polymers incorporated with nanoparticles, coating simulation of ECM, and drug delivery systems. A perspective on the application of supramolecular systems is also included.
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Affiliation(s)
- Yijie Li
- Inserm UMR_S 1121, CNRS EMR 7003, Université de Strasbourg, Biomaterials and Bioengineering, Centre de Recherche en Biomédecine de Strasbourg, 1 rue Eugène Boeckel, Strasbourg F-67000, France
- SPARTHA Medical, Centre de Recherche en Biomédecine de Strasbourg, 1 rue Eugène Boeckel, Strasbourg, France
| | - Nihal Engin Vrana
- SPARTHA Medical, Centre de Recherche en Biomédecine de Strasbourg, 1 rue Eugène Boeckel, Strasbourg, France
| | - Baptiste Letellier
- SPARTHA Medical, Centre de Recherche en Biomédecine de Strasbourg, 1 rue Eugène Boeckel, Strasbourg, France
| | - Philippe Lavalle
- Inserm UMR_S 1121, CNRS EMR 7003, Université de Strasbourg, Biomaterials and Bioengineering, Centre de Recherche en Biomédecine de Strasbourg, 1 rue Eugène Boeckel, Strasbourg F-67000, France
- SPARTHA Medical, Centre de Recherche en Biomédecine de Strasbourg, 1 rue Eugène Boeckel, Strasbourg, France
| | - Chloé Guilbaud-Chéreau
- SPARTHA Medical, Centre de Recherche en Biomédecine de Strasbourg, 1 rue Eugène Boeckel, Strasbourg, France
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Tan Y, Fan S, Wu X, Liu M, Dai T, Liu C, Ni S, Wang J, Yuan X, Zhao H, Weng Y. Fabrication of a three-dimensional printed gelatin/sodium alginate/nano-attapulgite composite polymer scaffold loaded with leonurine hydrochloride and its effects on osteogenesis and vascularization. Int J Biol Macromol 2023; 249:126028. [PMID: 37506787 DOI: 10.1016/j.ijbiomac.2023.126028] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2023] [Revised: 07/24/2023] [Accepted: 07/25/2023] [Indexed: 07/30/2023]
Abstract
Bone tissue engineering scaffolds have made significant progress in treating bone defects in recent decades. However, the lack of a vascular network within the scaffold limits bone formation after implantation in vivo. Recent research suggests that leonurine hydrochloride (LH) can promote healing in full-thickness cutaneous wounds by increasing vessel formation and collagen deposition. Gelatin and Sodium Alginate are both polymers. ATP is a magnesium silicate chain mineral. In this study, a Gelatin/Sodium Alginate/Nano-Attapulgite composite hydrogel was used as the base material first, and the Gelatin/Sodium Alginate/Nano-Attapulgite composite polymer scaffold loaded with LH was then created using 3D printing technology. Finally, LH was grafted onto the base material by an amide reaction to construct a scaffold loaded with LH to achieve long-term LH release. When compared to pure polymer scaffolds, in vitro results showed that LH-loaded scaffolds promoted the differentiation of BMSCs into osteoblasts, as evidenced by increased expression of osteogenic key genes. The results of in vivo tissue staining revealed that the drug-loaded scaffold promoted both angiogenesis and bone formation. Collectively, these findings suggest that LH-loaded Gelatin/Sodium Alginate/Nano-Attapulgite composite hydrogel scaffolds are a potential therapeutic strategy and can assist bone regeneration.
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Affiliation(s)
- Yadong Tan
- Department of Orthopedics, The Affiliated Changzhou Second People's Hospital of Nanjing Medical University, Changzhou 213164, China; Changzhou Medical Center, Nanjing Medical University, Changzhou 213164, China
| | - Shijie Fan
- Department of Orthopedics, The Affiliated Changzhou Second People's Hospital of Nanjing Medical University, Changzhou 213164, China; Changzhou Medical Center, Nanjing Medical University, Changzhou 213164, China
| | - Xiaoyu Wu
- Department of Orthopedics, The Affiliated Changzhou Second People's Hospital of Nanjing Medical University, Changzhou 213164, China; Changzhou Medical Center, Nanjing Medical University, Changzhou 213164, China
| | - Menggege Liu
- Department of Orthopedics, The Affiliated Changzhou Second People's Hospital of Nanjing Medical University, Changzhou 213164, China; Changzhou Medical Center, Nanjing Medical University, Changzhou 213164, China
| | - Ting Dai
- Department of Orthopedics, The Affiliated Changzhou Second People's Hospital of Nanjing Medical University, Changzhou 213164, China; Changzhou Medical Center, Nanjing Medical University, Changzhou 213164, China
| | - Chun Liu
- Department of Orthopedics, The Affiliated Changzhou Second People's Hospital of Nanjing Medical University, Changzhou 213164, China; Changzhou Medical Center, Nanjing Medical University, Changzhou 213164, China
| | - Su Ni
- Department of Orthopedics, The Affiliated Changzhou Second People's Hospital of Nanjing Medical University, Changzhou 213164, China; Changzhou Medical Center, Nanjing Medical University, Changzhou 213164, China
| | - Jiafeng Wang
- Department of Orthopedics, The Affiliated Changzhou Second People's Hospital of Nanjing Medical University, Changzhou 213164, China; Changzhou Medical Center, Nanjing Medical University, Changzhou 213164, China
| | - Xiuchen Yuan
- Department of Orthopedics, The Affiliated Changzhou Second People's Hospital of Nanjing Medical University, Changzhou 213164, China; Changzhou Medical Center, Nanjing Medical University, Changzhou 213164, China
| | - Hongbin Zhao
- Department of Orthopedics, The Affiliated Changzhou Second People's Hospital of Nanjing Medical University, Changzhou 213164, China; Changzhou Medical Center, Nanjing Medical University, Changzhou 213164, China.
| | - Yiping Weng
- Department of Orthopedics, The Affiliated Changzhou Second People's Hospital of Nanjing Medical University, Changzhou 213164, China; Changzhou Medical Center, Nanjing Medical University, Changzhou 213164, China.
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Potaś J, Winnicka K. The Potential of Polyelectrolyte Multilayer Films as Drug Delivery Materials. Int J Mol Sci 2022; 23:ijms23073496. [PMID: 35408857 PMCID: PMC8998809 DOI: 10.3390/ijms23073496] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2022] [Revised: 03/18/2022] [Accepted: 03/22/2022] [Indexed: 02/05/2023] Open
Abstract
Polyelectrolyte multilayers (PEMs) represent a group of polyelectrolyte complex (PEC)–based materials widely investigated in the biomedical and pharmaceutical sciences. Despite the unflagging popularity of the aforementioned systems in tissue engineering, only a few updated scientific reports concerning PEM potential in drug administration can be found. In fact, PEM coatings are currently recognized as important tools for functionalizing implantable scaffolds; however, only a small amount of attention has been given to PEMs as drug delivery materials. Scientific reports on PEMs reveal two dominant reasons for the limited usability of multilayers in pharmaceutical technology: complex and expensive preparation techniques as well as high sensitivity of interacting polyelectrolytes to the varieties of internal and external factors. The aim of this work was to analyze the latest approaches, concerning the potential of PEMs in pharmacy, chemical technology, and (primarily) tissue engineering, with special attention given to possible polymer combinations, technological parameters, and physicochemical characteristics, such as hydrophilicity, adhesive and swelling properties, and internal/external structures of the systems formed. Careful recognition of the above factors is crucial in the development of PEM-based drug delivery materials.
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Zhuikova Y, Zhuikov V, Zubareva A, Akhmedova S, Sviridova I, Sergeeva N, Varlamov V. Physicochemical and biological characteristics of chitosan/κ-carrageenan thin layer-by-layer films for surface modification of nitinol. Micron 2020; 138:102922. [DOI: 10.1016/j.micron.2020.102922] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2020] [Revised: 07/31/2020] [Accepted: 08/01/2020] [Indexed: 12/22/2022]
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Layer-by-layer assembly as a robust method to construct extracellular matrix mimic surfaces to modulate cell behavior. Prog Polym Sci 2019. [DOI: 10.1016/j.progpolymsci.2019.02.004] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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Zarrintaj P, Bakhshandeh B, Saeb MR, Sefat F, Rezaeian I, Ganjali MR, Ramakrishna S, Mozafari M. Oligoaniline-based conductive biomaterials for tissue engineering. Acta Biomater 2018; 72:16-34. [PMID: 29625254 DOI: 10.1016/j.actbio.2018.03.042] [Citation(s) in RCA: 75] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2017] [Revised: 02/23/2018] [Accepted: 03/27/2018] [Indexed: 01/18/2023]
Abstract
The science and engineering of biomaterials have improved the human life expectancy. Tissue engineering is one of the nascent strategies with an aim to fulfill this target. Tissue engineering scaffolds are one of the most significant aspects of the recent tissue repair strategies; hence, it is imperative to design biomimetic substrates with suitable features. Conductive substrates can ameliorate the cellular activity through enhancement of cellular signaling. Biocompatible polymers with conductivity can mimic the cells' niche in an appropriate manner. Bioconductive polymers based on aniline oligomers can potentially actualize this purpose because of their unique and tailoring properties. The aniline oligomers can be positioned within the molecular structure of other polymers, thus painter acting with the side groups of the main polymer or acting as a comonomer in their backbone. The conductivity of oligoaniline-based conductive biomaterials can be tailored to mimic the electrical and mechanical properties of targeted tissues/organs. These bioconductive substrates can be designed with high mechanical strength for hard tissues such as the bone and with high elasticity to be used for the cardiac tissue or can be synthesized in the form of injectable hydrogels, particles, and nanofibers for noninvasive implantation; these structures can be used for applications such as drug/gene delivery and extracellular biomimetic structures. It is expected that with progress in the fields of biomaterials and tissue engineering, more innovative constructs will be proposed in the near future. This review discusses the recent advancements in the use of oligoaniline-based conductive biomaterials for tissue engineering and regenerative medicine applications. STATEMENT OF SIGNIFICANCE The tissue engineering applications of aniline oligomers and their derivatives have recently attracted an increasing interest due to their electroactive and biodegradable properties. However, no reports have systematically reviewed the critical role of oligoaniline-based conductive biomaterials in tissue engineering. Research on aniline oligomers is growing today opening new scenarios that expand the potential of these biomaterials from "traditional" treatments to a new era of tissue engineering. The conductivity of this class of biomaterials can be tailored similar to that of tissues/organs. To the best of our knowledge, this is the first review article in which such issue is systematically reviewed and critically discussed in the light of the existing literature. Undoubtedly, investigations on the use of oligoaniline-based conductive biomaterials in tissue engineering need further advancement and a lot of critical questions are yet to be answered. In this review, we introduce the salient features, the hurdles that must be overcome, the hopes, and practical constraints for further development.
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Zhang H, Ren KF, Chang H, Wang JL, Ji J. Surface-mediated transfection of a pDNA vector encoding short hairpin RNA to downregulate TGF-β1 expression for the prevention of in-stent restenosis. Biomaterials 2017; 116:95-105. [DOI: 10.1016/j.biomaterials.2016.11.042] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2016] [Revised: 10/28/2016] [Accepted: 11/24/2016] [Indexed: 01/14/2023]
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Strawski M, Granicka LH, Szklarczyk M. Redox properties of polyelectrolyte multilayer modified electrodes: a significant effect of the interactions between the polyelectrolyte layers in the films. Electrochim Acta 2017. [DOI: 10.1016/j.electacta.2016.12.194] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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10
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Yu X, Hou J, Shi Y, Su C, Zhao L. Preparation and characterization of novel chitosan-protamine nanoparticles for nucleus-targeted anticancer drug delivery. Int J Nanomedicine 2016; 11:6035-6046. [PMID: 27881917 PMCID: PMC5115688 DOI: 10.2147/ijn.s117066] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
It is well known that most anticancer drugs commonly show high toxicity to the DNA of tumor cells and exert effects by combining with the DNA or associated enzymes in the nucleus. Most developed drugs are first delivered into the cytoplasm and then transferred to the nucleus through the membrane pores. Sometimes, the transportation of drugs from cytoplasm to nucleus is not efficient and often results in poor therapeutic effects. In this study, we developed special and novel nanoparticles (NPs) made of chitosan and protamine for targeted nuclear capture of drugs to enhance anticancer effects. The anticancer effects of nuclear targeted-delivery of drugs in NPs were also evaluated by investigating cytotoxicity, cellular uptake mechanism, and cell apoptosis on cells. Chitosan–protamine NPs were characterized by good drug entrapment, sustained release, small average particle size, low polydispersity index, and high encapsulation efficiency; and accomplished the efficient nuclear delivery of fluorouracil (5-Fu). Compared with free 5-Fu and 5-Fu-loaded chitosan NPs, treatment of A549 cells and HeLa cells with 5-Fu-loaded chitosan–protamine NPs showed the highest cytotoxicity and further induced the significant apoptosis of cells. In addition, 5-Fu-loaded chitosan–protamine NPs exhibited the best efficiency in inhibiting tumor growth than the other three formulations. 5-Fu-loaded chitosan–protamine NPs enhanced antitumor efficacy through the targeted nuclear capture of drugs and showed promising potential as a nanodelivery system for quickly locating drugs in the nucleus of cells.
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Affiliation(s)
| | | | | | - Chang Su
- School of Veterinary Medicine, Jinzhou Medical University, Jinzhou, People's Republic of China
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Salvi C, Lyu X, Peterson AM. Effect of Assembly pH on Polyelectrolyte Multilayer Surface Properties and BMP-2 Release. Biomacromolecules 2016; 17:1949-58. [PMID: 27186660 DOI: 10.1021/acs.biomac.5b01730] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The effect of solution pH during layer-by-layer assembly of polyelectrolyte multilayer (PEM) coatings on properties relevant to orthopedic implant success was investigated. Bone morphogenetic protein 2 (BMP-2), a potent osteoconductive growth factor, was adsorbed onto the surface of anodized titanium, and PEM coatings prepared from solutions of poly-l-histidine and poly(methacrylic acid) were built on top of the BMP-2. High levels of BMP-2 released over several months were achieved. Approximately 2 μg/cm(2) of BMP-2 were initially adsorbed on the anodized titanium and a pH-dependent release behavior was observed, with more stable coatings assembled at pH = 6-7. Three different diffusion regimes could be determined from the release profiles: an initial burst release, a sustained release regime, and a depletion regime. BMP-2 was shown to maintain bioactivity after release from a PEM and the presence of a PEM was shown to preserve BMP-2 structure. No visible change was observed in surface roughness as the assembly pH was varied, whereas the surface energy decreased for samples prepared at more basic pH. These results indicate that the initial BMP-2 layer affects PEM surface structure, but not the functional groups exposed on the surface.
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Affiliation(s)
- Claire Salvi
- Departments of †Chemical Engineering, ‡Mechanical Engineering, and §Biomedical Engineering, Worcester Polytechnic Institute , 100 Institute Road, Worcester, Massachusetts 01609, United States
| | - Xuejian Lyu
- Departments of †Chemical Engineering, ‡Mechanical Engineering, and §Biomedical Engineering, Worcester Polytechnic Institute , 100 Institute Road, Worcester, Massachusetts 01609, United States
| | - Amy M Peterson
- Departments of †Chemical Engineering, ‡Mechanical Engineering, and §Biomedical Engineering, Worcester Polytechnic Institute , 100 Institute Road, Worcester, Massachusetts 01609, United States
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Xiao S, Castro R, Maciel D, Gonçalves M, Shi X, Rodrigues J, Tomás H. Fine tuning of the pH-sensitivity of laponite-doxorubicin nanohybrids by polyelectrolyte multilayer coating. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2016; 60:348-356. [PMID: 26706540 DOI: 10.1016/j.msec.2015.11.051] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/24/2015] [Revised: 11/06/2015] [Accepted: 11/18/2015] [Indexed: 02/08/2023]
Abstract
Despite the wide research done in the field, the development of advanced drug delivery systems with improved drug delivery properties and effective anticancer capability still remains a great challenge. Based on previous work that showed the potentialities of the nanoclay Laponite as a pH-sensitive doxorubicin (Dox) delivery vehicle, herein we report a simple method to modulate its extent of drug release at different pH values. This was achieved by alternate deposition of cationic poly(allylamine) hydrochloride and anionic poly(sodium styrene sulfonate) (PAH/PSS) polyelectrolytes over the surface of Dox-loaded Laponite nanoparticles using the electrostatic layer-by-layer (LbL) self-assembly approach. The successful formation of polyelectrolyte multilayer-coated Dox/Laponite systems was confirmed by Dynamic Light Scattering and zeta potential measurements. Systematic studies were performed to evaluate their drug release profiles and anticancer efficiency. Our results showed that the presence of the polyelectrolyte multilayers improved the sustained release properties of Laponite and allowed a fine tuning of the extension of drug release at neutral and acidic pH values. The cytotoxicity presented by polyelectrolyte multilayer-coated Dox/Laponite systems towards MCF-7 cells was in accordance with the drug delivery profiles. Furthermore, cellular uptake studies revealed that polyelectrolyte multilayer-coated Dox/Laponite nanoparticles can be effectively internalized by cells conducting to Dox accumulation in cell nucleus.
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Affiliation(s)
- Shili Xiao
- School of Textile Science and Engineering, Wuhan Textile University, Wuhan, 430073, People's Republic of China; CQM - Centro de Química da Madeira, MMRG, Universidade da Madeira, Campus da Penteada, 9000-390 Funchal, Portugal.
| | - Rita Castro
- CQM - Centro de Química da Madeira, MMRG, Universidade da Madeira, Campus da Penteada, 9000-390 Funchal, Portugal
| | - Dina Maciel
- CQM - Centro de Química da Madeira, MMRG, Universidade da Madeira, Campus da Penteada, 9000-390 Funchal, Portugal
| | - Mara Gonçalves
- CQM - Centro de Química da Madeira, MMRG, Universidade da Madeira, Campus da Penteada, 9000-390 Funchal, Portugal
| | - Xiangyang Shi
- CQM - Centro de Química da Madeira, MMRG, Universidade da Madeira, Campus da Penteada, 9000-390 Funchal, Portugal; College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai 201620, People's Republic of China
| | - João Rodrigues
- CQM - Centro de Química da Madeira, MMRG, Universidade da Madeira, Campus da Penteada, 9000-390 Funchal, Portugal
| | - Helena Tomás
- CQM - Centro de Química da Madeira, MMRG, Universidade da Madeira, Campus da Penteada, 9000-390 Funchal, Portugal.
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Zhou Q, Li L, Li J. Stem cells with decellularized liver scaffolds in liver regeneration and their potential clinical applications. Liver Int 2015; 35:687-94. [PMID: 24797694 DOI: 10.1111/liv.12581] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/15/2014] [Accepted: 04/27/2014] [Indexed: 02/13/2023]
Abstract
End-stage hepatic failure is a potentially life-threatening condition for which orthotopic liver transplantation (OLT) is the only effective treatment. However, a shortage of available donor organs for transplantation each year results in the death of many patients waiting for liver transplantation. Cell-based therapies and hepatic tissue engineering have been considered as alternatives to liver transplantation. However, primary hepatocyte transplantation has rarely produced therapeutic effects because mature hepatocytes cannot be effectively expanded in vitro, and the availability of hepatocytes is often limited by shortages of donor organs. Decellularization is an attractive technique for scaffold preparation in stem cell-based liver engineering, as the resulting material can potentially retain the liver architecture, native vessel network and specific extracellular matrix (ECM). Thus, the reconstruction of functional and practical liver tissue using decellularized scaffolds becomes possible. This review focuses on the current understanding of liver tissue engineering, whole-organ liver decellularization techniques, cell sources for recellularization and potential clinical applications and challenges.
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Affiliation(s)
- Qian Zhou
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, School of Medicine, Zhejiang University, 79 Qingchun Rd., Hangzhou, 310003, China
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15
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Lee IC, Liu YC, Tsai HA, Shen CN, Chang YC. Promoting the selection and maintenance of fetal liver stem/progenitor cell colonies by layer-by-layer polypeptide tethered supported lipid bilayer. ACS APPLIED MATERIALS & INTERFACES 2014; 6:20654-63. [PMID: 25243588 DOI: 10.1021/am503928u] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
In this study, we designed and constructed a series of layer-by-layer polypeptide adsorbed supported lipid bilayer (SLB) films as a novel and label-free platform for the isolation and maintenance of rare populated stem cells. In particular, four alternative layers of anionic poly-l-glutamic acid and cationic poly-l-lysine were sequentially deposited on an anionic SLB. We found that the fetal liver stem/progenitor cells from the primary culture were selected and formed colonies on all layer-by-layer polypeptide adsorbed SLB surfaces, regardless of the number of alternative layers and the net charges on those layers. Interestingly, these isolated stem/progenitor cells formed colonies which were maintained for an 8 day observation period. Quartz crystal microbalance with dissipation measurements showed that all SLB-polypeptide films were protein resistant with serum levels significantly lower than those on the polypeptide multilayer films without an underlying SLB. We suggest the fluidic SLB promotes selective binding while minimizing the cell-surface interaction due to its nonfouling nature, thus limiting stem cell colonies from spreading.
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Affiliation(s)
- I-Chi Lee
- Graduate Institute of Biochemical and Biomedical Engineering, Chang-Gung University , Tao-yuan 333, Taiwan, R.O.C
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Cartilage oligomeric matrix protein gene multilayers inhibit osteogenic differentiation and promote chondrogenic differentiation of mesenchymal stem cells. Int J Mol Sci 2014; 15:20117-33. [PMID: 25380520 PMCID: PMC4264159 DOI: 10.3390/ijms151120117] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2014] [Revised: 09/22/2014] [Accepted: 10/27/2014] [Indexed: 01/09/2023] Open
Abstract
There are still many challenges to acquire the optimal integration of biomedical materials with the surrounding tissues. Gene coatings on the surface of biomaterials may offer an effective approach to solve the problem. In order to investigate the gene multilayers mediated differentiation of mesenchymal stem cells (MSCs), gene functionalized films of hyaluronic acid (HA) and lipid-DNA complex (LDc) encoding cartilage oligomeric matrix protein (COMP) were constructed in this study via the layer-by-layer self-assembly technique. Characterizations of the HA/DNA multilayered films indicated the successful build-up process. Cells could be directly transfected by gene films and a higher expression could be obtained with the increasing bilayer number. The multilayered films were stable for a long period and DNA could be easily released in an enzymatic condition. Real-time polymerase chain reaction (RT-PCR) assay presented significantly higher (p < 0.01) COMP expression of MSCs cultured with HA/COMP multilayered films. Compared with control groups, the osteogenic gene expression levels of MSCs with HA/COMP multilayered films were down-regulated while the chondrogenic gene expression levels were up-regulated. Similarly, the alkaline phosphatase (ALP) staining and Alizarin red S staining of MSCs with HA/COMP films were weakened while the alcian blue staining was enhanced. These results demonstrated that HA/COMP multilayered films could inhibit osteogenic differentiation and promote chondrogenic differentiation of MSCs, which might provide new insight for physiological ligament-bone healing.
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Cui H, Wang Y, Cui L, Zhang P, Wang X, Wei Y, Chen X. In Vitro Studies on Regulation of Osteogenic Activities by Electrical Stimulus on Biodegradable Electroactive Polyelectrolyte Multilayers. Biomacromolecules 2014; 15:3146-57. [DOI: 10.1021/bm5007695] [Citation(s) in RCA: 62] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Haitao Cui
- Key
Laboratory of Polymer Ecomaterials, Changchun Institute of Applied
Chemistry, Chinese Academy of Sciences, Changchun 130022, People’s Republic of China
- University of Chinese Academy of Sciences, Beijing 100039, People’s Republic of China
| | - Yu Wang
- Key
Laboratory of Polymer Ecomaterials, Changchun Institute of Applied
Chemistry, Chinese Academy of Sciences, Changchun 130022, People’s Republic of China
| | - Liguo Cui
- Key
Laboratory of Polymer Ecomaterials, Changchun Institute of Applied
Chemistry, Chinese Academy of Sciences, Changchun 130022, People’s Republic of China
| | - Peibiao Zhang
- Key
Laboratory of Polymer Ecomaterials, Changchun Institute of Applied
Chemistry, Chinese Academy of Sciences, Changchun 130022, People’s Republic of China
| | - Xianhong Wang
- Key
Laboratory of Polymer Ecomaterials, Changchun Institute of Applied
Chemistry, Chinese Academy of Sciences, Changchun 130022, People’s Republic of China
| | - Yen Wei
- Department
of Chemistry, Tsinghua University, Beijing 100084, People’s Republic of China
| | - Xuesi Chen
- Key
Laboratory of Polymer Ecomaterials, Changchun Institute of Applied
Chemistry, Chinese Academy of Sciences, Changchun 130022, People’s Republic of China
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18
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Mikulska A, Filipowska J, Osyczka AM, Szuwarzyński M, Nowakowska M, Szczubiałka K. Photocrosslinked ultrathin anionic polysaccharide supports for accelerated growth of human mesenchymal stem cells. Cell Prolif 2014; 47:516-26. [PMID: 24961895 DOI: 10.1111/cpr.12118] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2014] [Accepted: 04/30/2014] [Indexed: 01/02/2023] Open
Abstract
OBJECTIVES Properties of cell culture supports obtained from ultrathin multilayer films containing anionic natural polysaccharides (PSacs) and a synthetic polycation were studied. MATERIALS AND METHODS Supports were prepared via a layer-by-layer (LbL) self-assembly deposition method. Polymers used were: heparin (Hep), chondroitin sulphate (CS), hyaluronic acid (HA), and ι-carrageenan (Car) as polyanions, and diazoresin (DR) as a polycation. PSac layers were crosslinked with DR layers by irradiation with UV light absorbed by DR resin. RESULTS DR/PSac films are very efficient cell culture growth supports as found from experiments with human mesenchymal stem cells (hMSCs). Irradiation of the films resulted in changing zeta potential of outermost layers of both DR and PSac to more negative values, and in increased film hydrophobicity, as found from the contact angle measurements. Photocrosslinking of the supports led to their increased stability. CONCLUSIONS The supports allow for obtaining intact cell monolayers faster than when typical polystyrene tissue culture plates are used. Moreover, these monolayers spontaneously detach permitting formation of new cell layers on these surfaces relatively early during culture, compared to cells cultured on commonly used tissue culture plastic.
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Affiliation(s)
- A Mikulska
- Faculty of Chemistry, Jagiellonian University, 30-387, Kraków, Poland
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19
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Shukla A, Almeida B. Advances in cellular and tissue engineering using layer-by-layer assembly. WILEY INTERDISCIPLINARY REVIEWS-NANOMEDICINE AND NANOBIOTECHNOLOGY 2014; 6:411-21. [PMID: 24723385 DOI: 10.1002/wnan.1269] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/27/2013] [Revised: 02/10/2014] [Accepted: 02/27/2014] [Indexed: 11/05/2022]
Abstract
Layer-by-layer (LbL) assembly is a self-assembly technique used to develop multilayer films based on complementary interactions between film components. These multilayer films have had a significant impact on the fields of cellular and tissue engineering. The aim of cellular engineering is to understand and control cell behavior, which not only impacts applications in regenerative medicine but also other biomedical therapies that rely on cell interactions with biomaterials, including treatments for autoimmune disorders and cancer. Tissue engineering approaches to tissue repair and regeneration utilize three-dimensional biomaterial scaffolds that interact favorably with cells. Cellular engineering studies can better inform the design of these scaffolds. The ease of tuning the chemical and mechanical properties of LbL films, the ability to coat a variety of medically relevant substrates (including cell culture surfaces and scaffolds), and the wide range of species that can be incorporated into these films (ranging from proteins to small molecules) have led to the successful use of LbL assembly for a variety of cellular and tissue engineering applications. The films used in these biomedical applications can be divided into those that release therapeutics, often with controlled stimuli-responsive release behavior, and those that act without releasing these agents.
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Affiliation(s)
- Anita Shukla
- Center for Biomedical Engineering, Institute for Molecular and Nanoscale Innovation, School of Engineering, Brown University, Providence, RI, USA
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20
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Peterson AM, Pilz-Allen C, Kolesnikova T, Möhwald H, Shchukin D. Growth factor release from polyelectrolyte-coated titanium for implant applications. ACS APPLIED MATERIALS & INTERFACES 2014; 6:1866-1871. [PMID: 24325402 DOI: 10.1021/am404849y] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Polyelectrolyte multilayer coatings based on poly(methacrylic acid) and poly-l-histidine were formed on anodized titanium surfaces with adsorbed bone morphogenetic protein 2 (BMP-2) or basic fibroblast growth factor (FGFb). These coatings are proposed for use on titanium implanted devices. Coatings were capable of sustained release of growth factor over 25 days, with BMP-2 and FGFb exhibiting approximately identical release profiles. Cell culture on growth factor-eluting surfaces was more effective for preosteoblasts on BMP-2-eluting surfaces than for fibroblasts on FGFb-eluting surfaces. Cell counts at all time points on BMP-2-eluting surfaces were significantly higher than for those on anodized titanium or polyelectrolyte surfaces that did not contain BMP-2. Alkaline phosphatase levels were significantly higher after 21 days on BMP-2-eluting surfaces, indicating increased bone growth.
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Affiliation(s)
- Amy M Peterson
- Interfaces Department, Max Planck Institute of Colloids and Interfaces , Am Mühlenberg 1, 14476 Potsdam, Germany
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21
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Peterson AM, Pilz-Allen C, Möhwald H, Shchukin DG. Evaluation of the role of polyelectrolyte deposition conditions in growth factor release. J Mater Chem B 2014; 2:2680-2687. [DOI: 10.1039/c3tb21757d] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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22
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Wibowo SH, Wong EHH, Sulistio A, Guntari SN, Blencowe A, Caruso F, Qiao GG. Assembly of free-standing polypeptide films via the synergistic combination of hyperbranched macroinitiators, the grafting-from approach, and cross-chain termination. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2013; 25:4619-4624. [PMID: 23722350 DOI: 10.1002/adma.201301132] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/12/2013] [Revised: 04/23/2013] [Indexed: 06/02/2023]
Abstract
Cross-linked polypeptide-based films are fabricated via a novel and robust method employing surface-initiated ring opening polymerization of α-amino acid N-carboxyanhydrides (NCA-ROP). The judicious combination of amine-based hyperbranched macroinitiators and benzyl ester-protected NCA derivatives promotes network formation by cross-chain terminations, which allows the formation of stable cross-linked peptide-based capsules in a one-pot system.
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Affiliation(s)
- Steven Harris Wibowo
- Department of Chemical and Biomolecular Engineering, The University of Melbourne, Parkville, VIC 3010, Australia
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23
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Gribova V, Gauthier-Rouvière C, Albigès-Rizo C, Auzely-Velty R, Picart C. Effect of RGD functionalization and stiffness modulation of polyelectrolyte multilayer films on muscle cell differentiation. Acta Biomater 2013; 9:6468-80. [PMID: 23261924 DOI: 10.1016/j.actbio.2012.12.015] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2012] [Revised: 12/04/2012] [Accepted: 12/11/2012] [Indexed: 02/06/2023]
Abstract
Skeletal muscle tissue engineering holds promise for the replacement of muscle damaged by injury and for the treatment of muscle diseases. Although arginylglycylaspartic acid (RGD) substrates have been widely explored in tissue engineering, there have been no studies aimed at investigating the combined effects of RGD nanoscale presentation and matrix stiffness on myogenesis. In the present work we use polyelectrolyte multilayer films made of poly(L-lysine) (PLL) and poly(L-glutamic) acid (PGA) as substrates of tunable stiffness that can be functionalized by a RGD adhesive peptide to investigate important events in myogenesis, including adhesion, migration, proliferation and differentiation. C2C12 myoblasts were used as cellular models. RGD presentation on soft films and increasing film stiffness could both induce cell adhesion, but the integrins involved in adhesion were different in the case of soft and stiff films. Soft films with RGD peptide appeared to be the most appropriate substrate for myogenic differentiation, while the stiff PLL/PGA films induced significant cell migration and proliferation and inhibited myogenic differentiation. ROCK kinase was found to be involved in the myoblast response to the different films. Indeed, its inhibition was sufficient to rescue differentiation on stiff films, but no significant changes were observed on stiff films with the RGD peptide. These results suggest that different signaling pathways may be activated depending on the mechanical and biochemical properties of multilayer films. This study emphasizes the advantage of soft PLL/PGA films presenting the RGD peptide in terms of myogenic differentiation. This soft RGD-presenting film may be further used as a coating of various polymeric scaffolds for muscle tissue engineering.
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24
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Surface-mediated functional gene delivery: An effective strategy for enhancing competitiveness of endothelial cells over smooth muscle cells. Biomaterials 2013; 34:3345-54. [DOI: 10.1016/j.biomaterials.2013.01.065] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2012] [Accepted: 01/15/2013] [Indexed: 12/18/2022]
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25
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Zhang X, Li Z, Yuan X, Cui Z, Bao H, Li X, Liu Y, Yang X. Cytotoxicity and antibacterial property of titanium alloy coated with silver nanoparticle-containing polyelectrolyte multilayer. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2013; 33:2816-20. [PMID: 23623101 DOI: 10.1016/j.msec.2013.03.010] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/19/2012] [Revised: 01/16/2013] [Accepted: 03/01/2013] [Indexed: 11/26/2022]
Abstract
Silver nanoparticle (AgNP) was incorporated into dopamine-modified alginate/chitosan (DAL/CHI) polyelectrolyte multilayer to modify the surface of titanium alloy and improve its antibacterial property. Scanning electron microscopy showed that AgNP with the size of 50 nm embedded in DAL/CHI multilayers homogeneously. X-ray photoelectron spectroscopy analysis indicated that the nanoparticles were silver (0) with peaks at 368.4 and 374.4 eV, respectively. The formation of silver (0) without the addition of reductants was due to the self-polymerization of dopamine, which can reduce the silver cation into neutral metal. The polyelectrolyte multilayer coating enhanced the wettability of titanium alloy and promoted the fibroblast proliferation significantly, which could be attributed to the excellent biocompatibility of DAL/CHI. Despite the slight fall of L929 cell activity after AgNP incorporation, AgNP-DAL/CHI multilayer inhibited the growth of both Escherichia coli and Staphylococcus aureus. The above results demonstrate that dopamine decoration is a simple and effective way to induce the in-situ formation of AgNP within polyelectrolyte multilayer. Furthermore, the AgNP-containing multilayer considerably enhances the antibacterial activity of titanium alloy. The fabrication of AgNP-DAL/CHI multilayer on the surface of titanium implant might have great potential in orthopedic use.
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Affiliation(s)
- Xinming Zhang
- School of Materials Science and Engineering, Tianjin University, Tianjin, 300072, China
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26
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Wilhelmi M, Haverich A. Functionalized medical implants in the era of personalized medicine. ACTA ACUST UNITED AC 2013. [DOI: 10.2217/cpr.12.88] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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27
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Protamine stimulates bone sialoprotein gene expression. Gene 2013; 516:228-37. [DOI: 10.1016/j.gene.2012.12.056] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2012] [Accepted: 12/02/2012] [Indexed: 01/19/2023]
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28
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Peterson AM, Möhwald H, Shchukin DG. pH-Controlled Release of Proteins from Polyelectrolyte-Modified Anodized Titanium Surfaces for Implant Applications. Biomacromolecules 2012; 13:3120-6. [DOI: 10.1021/bm300928s] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Amy M. Peterson
- Department of Interfaces, Max Planck Institute of Colloids and Interfaces, 14476 Potsdam-Golm,
Germany
| | - Helmuth Möhwald
- Department of Interfaces, Max Planck Institute of Colloids and Interfaces, 14476 Potsdam-Golm,
Germany
| | - Dmitry G. Shchukin
- Department of Interfaces, Max Planck Institute of Colloids and Interfaces, 14476 Potsdam-Golm,
Germany
- Stephenson Institute
for Renewable Energy, University of Liverpool, Liverpool L69 3BX, United Kingdom
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29
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DeMuth PC, Moon JJ, Suh H, Hammond PT, Irvine DJ. Releasable layer-by-layer assembly of stabilized lipid nanocapsules on microneedles for enhanced transcutaneous vaccine delivery. ACS NANO 2012; 6:8041-51. [PMID: 22920601 PMCID: PMC3475723 DOI: 10.1021/nn302639r] [Citation(s) in RCA: 135] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
Here we introduce a new approach for transcutaneous drug delivery, using microneedles coated with stabilized lipid nanocapsules, for delivery of a model vaccine formulation. Poly(lactide-co-glycolide) microneedle arrays were coated with multilayer films via layer-by-layer assembly of a biodegradable cationic poly(β-amino ester) (PBAE) and negatively charged interbilayer-cross-linked multilamellar lipid vesicles (ICMVs). To test the potential of these nanocapsule-coated microneedles for vaccine delivery, we loaded ICMVs with a protein antigen and the molecular adjuvant monophosphoryl lipid A. Following application of microneedle arrays to the skin of mice for 5 min, (PBAE/ICMV) films were rapidly transferred from microneedle surfaces into the cutaneous tissue and remained in the skin following removal of the microneedle arrays. Multilayer films implanted in the skin dispersed ICMV cargos in the treated tissue over the course of 24 h in vivo, allowing for uptake of the lipid nanocapsules by antigen presenting cells in the local tissue and triggering their activation in situ. Microneedle-mediated transcutaneous vaccination with ICMV-carrying multilayers promoted robust antigen-specific humoral immune responses with a balanced generation of multiple IgG isotypes, whereas bolus delivery of soluble or vesicle-loaded antigen via intradermal injection or transcutaneous vaccination with microneedles encapsulating soluble protein elicited weak, IgG(1)-biased humoral immune responses. These results highlight the potential of lipid nanocapsules delivered by microneedles as a promising platform for noninvasive vaccine delivery applications.
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Affiliation(s)
- Peter C DeMuth
- Department of Biological Engineering, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
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30
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Cui H, Liu Y, Deng M, Pang X, Zhang P, Wang X, Chen X, Wei Y. Synthesis of Biodegradable and Electroactive Tetraaniline Grafted Poly(ester amide) Copolymers for Bone Tissue Engineering. Biomacromolecules 2012; 13:2881-9. [DOI: 10.1021/bm300897j] [Citation(s) in RCA: 92] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- Haitao Cui
- Key Laboratory of Polymer Ecomaterials,
Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P. R. China
- Graduate University of Chinese Academy of Sciences, Beijing 100039, P. R.
China
| | - Yadong Liu
- Key Laboratory of Polymer Ecomaterials,
Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P. R. China
| | - Mingxiao Deng
- Department of Chemistry, Northeast Normal University, Changchun 130022, P. R.
China
| | - Xuan Pang
- Key Laboratory of Polymer Ecomaterials,
Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P. R. China
| | - Peibiao Zhang
- Key Laboratory of Polymer Ecomaterials,
Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P. R. China
| | - Xianhong Wang
- Key Laboratory of Polymer Ecomaterials,
Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P. R. China
| | - Xuesi Chen
- Key Laboratory of Polymer Ecomaterials,
Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P. R. China
| | - Yen Wei
- Department of Chemistry, Tsinghua University, Beijing 100084, China
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31
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Hu Y, Cai K, Luo Z, Zhang Y, Li L, Lai M, Hou Y, Huang Y, Li J, Ding X, Zhang B, Sung KLP. Regulation of the differentiation of mesenchymal stem cells in vitro and osteogenesis in vivo by microenvironmental modification of titanium alloy surfaces. Biomaterials 2012; 33:3515-28. [PMID: 22333987 DOI: 10.1016/j.biomaterials.2012.01.040] [Citation(s) in RCA: 99] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2012] [Accepted: 01/19/2012] [Indexed: 02/05/2023]
Abstract
To mimic the extracellular microenvironment of bone, a bioactive multilayered structure of gelatin/chitosan pair, containing bone morphogenetic protein 2(BMP2) and fibronectin (FN), was constructed onto Ti6Al4V surface via a layer-by-layer assembly technique. The successful fabrication of multilayered structure was confirmed by contact angle measurement, field emission scanning electron microscopy (FE-SEM) and confocal laser scanning microscopy (CLSM), respectively. Bioactive BMP2 released in a sustained manner along with the degradation of multilayered structure. MSCs grown onto the multilayer coated TC4 substrates displayed significantly higher (p < 0.01 or p < 0.05) production levels of alkaline phosphatase (ALP), mineralization and genes expressions of runt related transcription factor 2 (Runx2), osterix, osteocalcin (OC), osteopontin (OPN), ALP and collagen type Ⅰ(ColⅠ) compared to the controls after culture for 7 days and 21 days, respectively. More importantly, MicroCT analysis and histological observations demonstrated that the multilayer coated Ti6Al4V implants in vivo promoted the bone density and new bone formation around them after implantation for 4 weeks and 12 weeks, respectively. The results indicated that Ti6Al4V coated with biofunctional multilayers was beneficial for osteogenesis and integration of implant/bone. The study therefore presents an alternative to fabricate bio-functionalized Ti6Al4V-based implants for potential application in orthopedics field.
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Affiliation(s)
- Yan Hu
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, College of Bioengineering, Chongqing University, Chongqing 400044, China
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