1
|
Rao M, Ashith MV, Suman E, Isloor AM, Shetty NJ, Natarajan S. Evaluation of the surface characteristics and antibacterial properties of Titanium dioxide nanotube and methacryloyloxyethylphosphorylcholine (MPC) coated orthodontic brackets-a comparative invitro study. Clin Oral Investig 2024; 28:323. [PMID: 38761310 PMCID: PMC11102386 DOI: 10.1007/s00784-024-05655-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2023] [Accepted: 04/08/2024] [Indexed: 05/20/2024]
Abstract
OBJECTIVES White spot lesions are the most common iatrogenic effect observed during orthodontic treatment. This study aimed to compare the surface characteristics and antibacterial action of uncoated and coated orthodontic brackets. MATERIALS AND METHODS Sixty commercially available stainless steel brackets were coated with TiO2 nanotubes and methacryloyloxyethylphosphorylcholine. The sample was divided into Group 1: uncoated orthodontic brackets, Group 2: Stainless steel brackets with TiO2 nanotubes coating, Group 3: Stainless steel brackets with methacryloyloxyethylphosphorylcholine coating, and Group 4: Stainless steel brackets with TiO2 nanotubes combined with methacryloyloxyethylphosphorylcholine coating. Surface characterization was assessed using atomic force microscopy and scanning electron microscopy. Streptococcus mutans was selected to test the antibacterial ability of the orthodontic brackets, total bacterial adhesion and bacterial viability were assessed. The brackets were subjected to scanning electron microscopy to detect the presence of biofilm. RESULTS The surface roughness was the greatest in Group 1 and least in Group 2 followed by Group 4 and Group 3 coated brackets. The optical density values were highest in Group 1 and lowest in Group 4. Comparison of colony counts revealed high counts in Group 1 and low counts in Group 4. A positive correlation between surface roughness and colony counts was obtained, however, was not statistically significant. CONCLUSIONS The coated orthodontic brackets exhibited less surface roughness than the uncoated orthodontic brackets. Group 4 coated orthodontic brackets showed the best antibacterial properties. CLINICAL RELEVANCE Coated orthodontic brackets prevent adhesion of streptococcus mutans and reduces plaque accumulation around the brackets thereby preventing formation of white spot lesions during orthodontic treatment.
Collapse
Affiliation(s)
- Madhura Rao
- Department of Orthodontics and Dentofacial Orthopaedics, Manipal College of Dental Sciences Mangalore, Manipal Academy of Higher Education, Karnataka, Manipal, 576104, India
| | - M V Ashith
- Department of Orthodontics and Dentofacial Orthopaedics, Manipal College of Dental Sciences Mangalore, Manipal Academy of Higher Education, Karnataka, Manipal, 576104, India.
| | - Ethel Suman
- Department Of Orthodontics and Dentofacial Orthopaedics, Manipal College of Dental Sciences Mangalore, Manipal Academy of Higher Education, Karnataka, Manipal, 576104, India
- Department of Microbiology, Kasturba Medical College Mangalore, Manipal Academy of Higher Education, Karnataka, Manipal, 576104, India
| | - Arun M Isloor
- Department Of Chemistry, National Institute of Technology, Surathkal, 575025, Karnataka, India
| | - Neetha J Shetty
- Department Of Periodontics Manipal College of Dental Sciences Mangalore, Manipal Academy of Higher Education, Karnataka, Manipal, 576104, India
| | - Srikant Natarajan
- Department Of Oral Pathology Manipal College of Dental Sciences Mangalore, Manipal Academy of Higher Education, Karnataka, Manipal, 576104, India
| |
Collapse
|
2
|
He T, Wang Y, Wang R, Yang H, Hu X, Pu Y, Yang B, Zhang J, Li J, Huang C, Jin R, Nie Y, Zhang X. Fibrous topology promoted pBMP2-activated matrix on titanium implants boost osseointegration. Regen Biomater 2023; 11:rbad111. [PMID: 38173764 PMCID: PMC10761207 DOI: 10.1093/rb/rbad111] [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: 10/30/2023] [Revised: 11/25/2023] [Accepted: 12/04/2023] [Indexed: 01/05/2024] Open
Abstract
Titanium (Ti) implants have been extensively used after surgical operations. Its surface bioactivity is of importance to facilitate integration with surrounding bone tissue, and ultimately ensure stability and long-term functionality of the implant. The plasmid DNA-activated matrix (DAM) coating on the surface could benefit osseointegration but is still trapped by poor transfection for further application, especially on the bone marrow mesenchymal stem cells (BMSCs) in vivo practical conditions. Herein, we constructed a DAM on the surface of fibrous-grained titanium (FG Ti) composed of phase-transition lysozyme (P) as adhesive, cationic arginine-rich lipid (RLS) as the transfection agent and plasmid DNA (pDNA) for bone morphology protein 2 (BMP2) expression. The cationic lipid RLS improved up to 30-fold higher transfection than that of commercial reagents (Lipofectamine 2000 and polyethyleneimine) on MSC. And importantly, Ti surface topology not only promotes the DAM to achieve high transfection efficiency (∼75.7% positive cells) on MSC due to the favorable combination but also reserves its contact induction effect for osteoblasts. Upon further exploration, the fibrous topology on FG Ti could boost pDNA uptake for gene transfection, and cell migration in MSC through cytoskeleton remodeling and induce contact guidance for enhanced osteointegration. At the same time, the cationic RLS together with adhesive P were both antibacterial, showing up to 90% inhibition rate against Escherichia coli and Staphylococcus aureus with reduced adherent microorganisms and disrupted bacteria. Finally, the FG Ti-P/pBMP2 implant achieved accelerated bone healing capacities through highly efficient gene delivery, aligned surface topological structure and increased antimicrobial properties in a rat femoral condylar defect model.
Collapse
Affiliation(s)
- Ting He
- National Engineering Research Centre for Biomaterials/College of Biomedical Engineering, Sichuan University, Chengdu 610064, China
| | - Yichun Wang
- National Engineering Research Centre for Biomaterials/College of Biomedical Engineering, Sichuan University, Chengdu 610064, China
| | - Ruohan Wang
- National Engineering Research Centre for Biomaterials/College of Biomedical Engineering, Sichuan University, Chengdu 610064, China
| | - Huan Yang
- National Engineering Research Centre for Biomaterials/College of Biomedical Engineering, Sichuan University, Chengdu 610064, China
| | - Xueyi Hu
- National Engineering Research Centre for Biomaterials/College of Biomedical Engineering, Sichuan University, Chengdu 610064, China
| | - Yiyao Pu
- National Engineering Research Centre for Biomaterials/College of Biomedical Engineering, Sichuan University, Chengdu 610064, China
| | - Binbin Yang
- National Engineering Research Centre for Biomaterials/College of Biomedical Engineering, Sichuan University, Chengdu 610064, China
- Department of the Affiliated Stomatological Hospital of Southwest Medical University, Southwest Medical University, Luzhou 646000, China
| | - Jingyuan Zhang
- National Engineering Research Centre for Biomaterials/College of Biomedical Engineering, Sichuan University, Chengdu 610064, China
| | - Juan Li
- State Key Laboratory of Oral Diseases, West China School of Stomatology, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
| | - Chongxiang Huang
- National Engineering Research Centre for Biomaterials/College of Biomedical Engineering, Sichuan University, Chengdu 610064, China
- School of Aeronautics and Astronautics, Sichuan University, Chengdu 610064, China
| | - Rongrong Jin
- National Engineering Research Centre for Biomaterials/College of Biomedical Engineering, Sichuan University, Chengdu 610064, China
| | - Yu Nie
- National Engineering Research Centre for Biomaterials/College of Biomedical Engineering, Sichuan University, Chengdu 610064, China
| | - Xingdong Zhang
- National Engineering Research Centre for Biomaterials/College of Biomedical Engineering, Sichuan University, Chengdu 610064, China
| |
Collapse
|
3
|
Kafkopoulos G, Karakurt E, Martinho RP, Duvigneau J, Vancso GJ. Engineering of Adhesion at Metal-Poly(lactic acid) Interfaces by Poly(dopamine): The Effect of the Annealing Temperature. ACS APPLIED POLYMER MATERIALS 2023; 5:5370-5380. [PMID: 37469884 PMCID: PMC10353006 DOI: 10.1021/acsapm.3c00672] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/11/2023] [Accepted: 06/08/2023] [Indexed: 07/21/2023]
Abstract
Control over adhesion at interfaces from strong bonding to release between thermoplastic polymers (TPs) and metal oxides is highly significant for polymer composites. In this work, we showcase a simple and inexpensive method to tune adhesion between a TP of growing interest, poly(lactic acid) (PLA), and two commercial metal alloys, based on titanium and stainless steel. This is realized by coating titanium and stainless steel wires with polydopamine (PDA), thermally treating them under vacuum at temperatures ranging from 25 to 250 °C, and then comolding them with PLA to form pullout specimens for adhesion tests. Pullout results indicate that PDA coatings treated at low temperatures up to a given threshold significantly improve adhesion between PLA and the metals. Conversely, at higher PDA annealing temperatures beyond the threshold, interfacial bonding gradually declines. The excellent control over interfacial adhesion is attributed to the thermally induced transformation of PDA. In this work, we show using thermogravimetric analysis, X-ray photoelectron spectroscopy, Fourier transform infrared, and 13C solid-state NMR that the extent of the thermal transformation is dependent on the annealing temperature. By selecting the annealing temperature, we vary the concentration of primary amine and hydroxyl groups in PDA, which influences adhesion at the metal/PLA interface. We believe that these findings contribute to optimizing and broadening the applications of PDA in composite materials.
Collapse
Affiliation(s)
- Georgios Kafkopoulos
- Department of Materials Science and Technology (MTP) of Polymers and Sustainable Polymer Chemistry (SPC), University of Twente, Enschede 7522 NB, The Netherlands
| | - Ezgi Karakurt
- Department of Materials Science and Technology (MTP) of Polymers and Sustainable Polymer Chemistry (SPC), University of Twente, Enschede 7522 NB, The Netherlands
| | - Ricardo P Martinho
- Department of Molecules and Materials, MESA+ Institute for Nanotechnology, Faculty of Science and Technology, University of Twente, Enschede 7500 AE, The Netherlands
| | - Joost Duvigneau
- Department of Materials Science and Technology (MTP) of Polymers and Sustainable Polymer Chemistry (SPC), University of Twente, Enschede 7522 NB, The Netherlands
| | - G Julius Vancso
- Department of Materials Science and Technology (MTP) of Polymers and Sustainable Polymer Chemistry (SPC), University of Twente, Enschede 7522 NB, The Netherlands
| |
Collapse
|
4
|
Wei Z, Li K, Wang S, Wen L, Xu L, Wang Y, Chen Z, Li W, Qiu H, Li X, Chen J. Controllable AgNPs encapsulation to construct biocompatible and antibacterial titanium implant. Front Bioeng Biotechnol 2022; 10:1056419. [PMID: 36532588 PMCID: PMC9747934 DOI: 10.3389/fbioe.2022.1056419] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2022] [Accepted: 11/16/2022] [Indexed: 08/29/2023] Open
Abstract
Silver nanoparticles (AgNPs) are progressively becoming an in-demand material for both medical and life use due to their effective antimicrobial properties. The high surface area-to-volume ratio endows AgNPs with enhanced antibacterial capacity accompanied by inevitable cytotoxicity. Surface coating technique could precisely regulate the particle shape, aggregation, and Ag+ release pattern of AgNPs, by which the cytotoxicity could be significantly reduced. Various coating methods have been explored to shell AgNPs, but it remains a great challenge to precisely control the aggregation state of AgNPs and their shell thickness. Herein, we proposed a simple method to prepare a tunable polydopamine (pDA) coating shell on AgNPs just by tuning the reaction pH and temperature, yet we obtained high antibacterial property and excellent biocompatibility. SEM and TEM revealed that pDA coated AgNPs can form core-shell structures with different aggregation states and shell thickness. Both in vitro and in vivo antibacterial tests show that acid condition and heat-treatment lead to appropriate AgNPs cores and pDA shell structures, which endow Ti with sustained antibacterial properties and preferable cell compatibility. One month of implantation in an infected animal model demonstrated that the obtained surface could promote osteogenesis and inhibit inflammation due to its strong antibacterial properties. Therefore, this study provides a promising approach to fabricate biocompatible antibacterial surface.
Collapse
Affiliation(s)
- Zhangao Wei
- Key Laboratory of Oral Diseases Research of Anhui Province, Stomatologic Hospital and College, Anhui Medical University, Hefei, China
| | - Kexin Li
- Key Laboratory of Oral Diseases Research of Anhui Province, Stomatologic Hospital and College, Anhui Medical University, Hefei, China
| | - Shuang Wang
- Key Laboratory of Oral Diseases Research of Anhui Province, Stomatologic Hospital and College, Anhui Medical University, Hefei, China
| | - Lan Wen
- Department of Neurosurgery, West China Hospital, Sichuan University, Chengdu, China
| | - Linghan Xu
- Key Laboratory of Oral Diseases Research of Anhui Province, Stomatologic Hospital and College, Anhui Medical University, Hefei, China
| | - Yankai Wang
- Key Laboratory of Oral Diseases Research of Anhui Province, Stomatologic Hospital and College, Anhui Medical University, Hefei, China
| | - Zirui Chen
- Key Laboratory of Oral Diseases Research of Anhui Province, Stomatologic Hospital and College, Anhui Medical University, Hefei, China
| | - Wei Li
- Key Laboratory of Oral Diseases Research of Anhui Province, Stomatologic Hospital and College, Anhui Medical University, Hefei, China
| | - Hua Qiu
- Key Laboratory of Oral Diseases Research of Anhui Province, Stomatologic Hospital and College, Anhui Medical University, Hefei, China
| | - Xiangyang Li
- Key Laboratory of Oral Diseases Research of Anhui Province, Stomatologic Hospital and College, Anhui Medical University, Hefei, China
| | - Jialong Chen
- Key Laboratory of Oral Diseases Research of Anhui Province, Stomatologic Hospital and College, Anhui Medical University, Hefei, China
| |
Collapse
|
5
|
Zhang M, Shi X, Sun H, Xu D, Gao Y, Wu X, Zhang J, Zhang J. Immobilization of Glycogen Synthase Kinase-3β Inhibitor on 316L Stainless Steel via Polydopamine to Accelerate Endothelialization. Front Bioeng Biotechnol 2021; 9:806151. [PMID: 34881239 PMCID: PMC8646698 DOI: 10.3389/fbioe.2021.806151] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2021] [Accepted: 11/04/2021] [Indexed: 11/30/2022] Open
Abstract
The coverage of stents with healthy endothelium is crucial to the success of cardiovascular stent implantation. Immobilizing bioactive molecules on stents is an effective strategy to generate such stents. Glycogen synthase kinase-3β inhibitor (GSKi) is a bioactive molecule that can effectively accelerate vascular endothelialization. In this work, GSKi was covalently conjugated on 316L stainless steel through polydopamine to develop a stable bioactive surface. Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM) and water contact angle results revealed the successful introduction of GSKi onto 316L stainless steel. The GSKi coating did not obviously affect the hemocompatibility of plates. The adhesion and proliferation of human coronary artery endothelial cells (HCAECs) on stainless steel was significantly promoted by the addition of GSKi. In summary, this work provides a universal and stable strategy of immobilizing GSKi on the stent surface. This method has the potential for widespread application in the modification of vascular stents.
Collapse
Affiliation(s)
- Ming Zhang
- Cardiology Department, The Second Hospital of Jilin University, Jilin University, Changchun, China
| | - Xudong Shi
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, China.,Jilin Biomedical Polymers Engineering Laboratory, Changchun, China
| | - Hai Sun
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, China.,Jilin Biomedical Polymers Engineering Laboratory, Changchun, China
| | - Donghua Xu
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, China
| | - Yang Gao
- Cardiology Department, The Second Hospital of Jilin University, Jilin University, Changchun, China
| | - Xi Wu
- Cardiology Department, The Second Hospital of Jilin University, Jilin University, Changchun, China
| | - Jianqi Zhang
- Cardiology Department, The Second Hospital of Jilin University, Jilin University, Changchun, China
| | - Jichang Zhang
- Cardiology Department, The Second Hospital of Jilin University, Jilin University, Changchun, China
| |
Collapse
|
6
|
Zhang K, Huang H, Hung HC, Leng C, Wei S, Crisci R, Jiang S, Chen Z. Strong Hydration at the Poly(ethylene glycol) Brush/Albumin Solution Interface. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2020; 36:2030-2036. [PMID: 32091913 DOI: 10.1021/acs.langmuir.9b03680] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Albumin molecules are extensively used as biocompatible coatings, and poly(ethylene glycol) (PEG) materials are widely used for antifouling. PEG materials have excellent antifouling property because of their strong surface hydration. Our previous research indicates that hydration at the PEG/bovine serum albumin solution interface is stronger than that at the PEG/water interface. This research shows that this observation is general for different types of albumin molecules. Different albumins including bovine, porcine, rat, rabbit, and sheep serum albumins were studied in this research. It was found that the hydration at the PEG methacrylate (pOEGMA)/albumin solution interface is always stronger than that at the pOEGMA/water interface. Here, we define "strong interfacial hydration" as "ordered strongly hydrogen-bonded interfacial water". We believe that such a strong hydration is because of the strong hydration on the albumin surface, leading to its biocompatible property. All of the albumin molecules demonstrated stronger hydration on the pOEGMA surface compared to other protein molecules such as lysozyme and fibrinogen. The strong hydration on albumin molecules is related to the high surface coverage of glutamic acid and lysine with similar amounts.
Collapse
Affiliation(s)
- Kexin Zhang
- Department of Chemistry, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Hao Huang
- Department of Chemistry, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Hsiang-Chieh Hung
- Department of Chemical Engineering, University of Washington, Seattle, Washington 98195, United States
| | - Chuan Leng
- Department of Chemistry, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Shuai Wei
- Department of Chemistry, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Ralph Crisci
- Department of Chemistry, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Shaoyi Jiang
- Department of Chemical Engineering, University of Washington, Seattle, Washington 98195, United States
| | - Zhan Chen
- Department of Chemistry, University of Michigan, Ann Arbor, Michigan 48109, United States
| |
Collapse
|
7
|
Malollari KG, Delparastan P, Sobek C, Vachhani SJ, Fink TD, Zha RH, Messersmith PB. Mechanical Enhancement of Bioinspired Polydopamine Nanocoatings. ACS APPLIED MATERIALS & INTERFACES 2019; 11:43599-43607. [PMID: 31644269 DOI: 10.1021/acsami.9b15740] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Inspired by the catechol and amine-rich adhesive proteins of mussels, polydopamine (pDA) has become one of the most widely employed methods for functionalizing material surfaces, powered in part by the versatility and simplicity of pDA film deposition that takes place spontaneously on objects immersed in an alkaline aqueous solution of dopamine monomer. Despite the widespread adoption of pDA as a multifunctional coating for surface modification, it exhibits poor mechanical performance. Attempts to modify the physical properties of pDA by incorporation of oxidizing agents, cross-linkers, or carbonization of the films at ultrahigh temperatures have been reported; however, improving mechanical properties with mild post-treatments without sacrificing the functionality and versatility of pDA remains a challenge. Here, we demonstrate thermal annealing at a moderate temperature (130 °C) as a facile route to enhance mechanical robustness of pDA coatings. Chemical spectroscopy, X-ray scattering, molecular force spectroscopy, and bulk mechanical analyses indicate that monomeric and oligomeric species undergo further polymerization during thermal annealing, leading to fundamental changes in molecular and bulk mechanical behavior of pDA. Considerable improvements in scratch resistance were noted in terms of both penetration depth (32% decrease) and residual depth (74% decrease) for the annealed pDA coating, indicating the enhanced ability of the annealed coating to resist mechanical deformations. Thermal annealing resulted in significant enhancement in the intermolecular and cohesive interactions between the chains in the pDA structure, attributed to cross-linking and increased entanglements, preventing desorption and detachment of the chains from the coating. Importantly, improvements in pDA mechanical performance through thermal annealing did not compromise the ability of pDA to support secondary coating reactions as evidenced by electroless deposition of a metal film adlayer on annealed pDA.
Collapse
Affiliation(s)
- Katerina G Malollari
- Department of Mechanical Engineering , University of California , Berkeley , California 94720 , United States
| | - Peyman Delparastan
- Department of Materials Science and Engineering , University of California , Berkeley , California 94720 , United States
| | - Caroline Sobek
- College of Chemistry , University of California , Berkeley , California 94720 , United States
| | | | - Tanner D Fink
- Department of Chemical & Biological Engineering , Rensselaer Polytechnic Institute , Troy , New York 12180 , United States
| | - R Helen Zha
- Department of Chemical & Biological Engineering , Rensselaer Polytechnic Institute , Troy , New York 12180 , United States
| | - Phillip B Messersmith
- Department of Materials Science and Engineering , University of California , Berkeley , California 94720 , United States
- Department of Bioengineering , University of California , Berkeley , California 94720 , United States
- Materials Sciences Division , Lawrence Berkeley National Laboratory , Berkeley , California 94720 , United States
| |
Collapse
|
8
|
Xu X, Li Y, Wang L, Li Y, Pan J, Fu X, Luo Z, Sui Y, Zhang S, Wang L, Ni Y, Zhang L, Wei S. Triple-functional polyetheretherketone surface with enhanced bacteriostasis and anti-inflammatory and osseointegrative properties for implant application. Biomaterials 2019; 212:98-114. [PMID: 31112825 DOI: 10.1016/j.biomaterials.2019.05.014] [Citation(s) in RCA: 105] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2018] [Revised: 05/08/2019] [Accepted: 05/08/2019] [Indexed: 12/14/2022]
Abstract
Polyetheretherketone (PEEK) is considered a potential orthopedic/dental material because of its excellent mechanical and chemical properties (e.g., similar elastic modulus to that of human bone). However, the poor bacteriostasis and anti-inflammatory and osseointegrative properties of bioinert PEEK impede its clinical application. We previously developed a facile and versatile surface modification method using dexamethasone plus minocycline-loaded liposomes (Dex/Mino liposomes) bonded by a mussel-inspired polydopamine coating, which effectively modulated cell inflammatory response and discouraged bacterial colonization in vitro. Herein, we report the application of this multifunctional surface modification method to improve bioinert PEEK, aimed at further studying the in vitro osteogenesis and in vivo properties of Dex/Mino liposome-modified PEEK to prevent bacterial contamination, attenuate the inflammatory response, and enhance ossification for physiologic osseointegration. Our study established that the Dex/Mino liposome-modified PEEK surface presented favorable stability and cytocompatibility. Compared with bare PEEK, improved osteogenic differentiation of human mesenchymal stem cells under both osteoinductive and osteoconductive conditions was found on the functionalized surface due to the liposomal Dex releasing. In vivo bacteriostasis assay confirmed that Mino released from the functionalized surface provided an effective antibacterial effect. Moreover, the subcutaneous foreign body reaction and beagle femur implantation models corroborated the enhanced anti-inflammatory and osteointegrative properties of the functionalized PEEK. Our findings indicate that the developed Dex/Mino liposome-modified PEEK with enhanced antibacterial, anti-inflammatory, and osseointegrative capacity has great potential as an orthopedic/dental implant material for clinical application.
Collapse
Affiliation(s)
- Xiao Xu
- Department of Oral and Maxillofacial Surgery/Central Laboratory, Peking University School and Hospital of Stomatology, National Engineering Laboratory for Digital and Material Technology of Stomatology, Beijing Key Laboratory of Digital Stomatology, Beijing 100081, PR China
| | - Yongliang Li
- Second Dental Center, School and Hospital of Stomatology, Peking University, Beijing 100081, PR China
| | - Lixin Wang
- Department of Stomatology, Beijing Shijitan Hospital, Capital Medical University, Beijing 100038, PR China
| | - Yan Li
- Laboratory of Biomaterials and Regenerative Medicine, Academy for Advanced Interdisciplinary Studies, Peking University, Beijing 100871, PR China
| | - Jijia Pan
- Laboratory of Biomaterials and Regenerative Medicine, Academy for Advanced Interdisciplinary Studies, Peking University, Beijing 100871, PR China
| | - Xiaoming Fu
- Department of Oral and Maxillofacial Surgery/Central Laboratory, Peking University School and Hospital of Stomatology, National Engineering Laboratory for Digital and Material Technology of Stomatology, Beijing Key Laboratory of Digital Stomatology, Beijing 100081, PR China
| | - Zuyuan Luo
- Laboratory of Biomaterials and Regenerative Medicine, Academy for Advanced Interdisciplinary Studies, Peking University, Beijing 100871, PR China
| | - Yi Sui
- Department of Oral and Maxillofacial Surgery/Central Laboratory, Peking University School and Hospital of Stomatology, National Engineering Laboratory for Digital and Material Technology of Stomatology, Beijing Key Laboratory of Digital Stomatology, Beijing 100081, PR China
| | - Siqi Zhang
- Laboratory of Biomaterials and Regenerative Medicine, Academy for Advanced Interdisciplinary Studies, Peking University, Beijing 100871, PR China
| | - Liang Wang
- Department of Oral and Maxillofacial Surgery/Central Laboratory, Peking University School and Hospital of Stomatology, National Engineering Laboratory for Digital and Material Technology of Stomatology, Beijing Key Laboratory of Digital Stomatology, Beijing 100081, PR China
| | - Yaofeng Ni
- Department of Stomatology, Beijing Shijitan Hospital, Capital Medical University, Beijing 100038, PR China
| | - Lei Zhang
- Department of Oral and Maxillofacial Surgery/Central Laboratory, Peking University School and Hospital of Stomatology, National Engineering Laboratory for Digital and Material Technology of Stomatology, Beijing Key Laboratory of Digital Stomatology, Beijing 100081, PR China.
| | - Shicheng Wei
- Department of Oral and Maxillofacial Surgery/Central Laboratory, Peking University School and Hospital of Stomatology, National Engineering Laboratory for Digital and Material Technology of Stomatology, Beijing Key Laboratory of Digital Stomatology, Beijing 100081, PR China; Laboratory of Biomaterials and Regenerative Medicine, Academy for Advanced Interdisciplinary Studies, Peking University, Beijing 100871, PR China.
| |
Collapse
|
9
|
Cell membrane mimetic copolymer coated polydopamine nanoparticles for combined pH-sensitive drug release and near-infrared photothermal therapeutic. Colloids Surf B Biointerfaces 2019; 176:1-8. [DOI: 10.1016/j.colsurfb.2018.12.057] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2018] [Revised: 11/27/2018] [Accepted: 12/20/2018] [Indexed: 12/19/2022]
|
10
|
Surface functionalization of polytetrafluoroethylene substrate with hybrid processes comprising plasma treatment and chemical reactions. Colloids Surf B Biointerfaces 2018; 173:77-84. [PMID: 30267957 DOI: 10.1016/j.colsurfb.2018.09.051] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2018] [Revised: 09/04/2018] [Accepted: 09/21/2018] [Indexed: 01/01/2023]
Abstract
Polytetrafluoroethylene (PTFE) exhibits excellent mechanical properties and chemical stability and has been widely used in medical fields for the preparation of implantable medical devices. However, the implantation of PTFE in living systems results in inflammation reactions and infections at the surface thus limits its long-term applications. For PTFE surface modification, we examined the effects of mussel-inspired polydopamine (PDA) coating and the further introduction of functional groups. During PDA coating, the plasma pretreatment on PTFE enhanced the stability of the PDA coating layer. Furthermore, the introduction of functional groups on the PDA layer was carried out using reactive functional groups for the photoinduced graft polymerization of methacrylate. For instance, 2-methacryloyloxyethyl phosphorylcholine (MPC) could be polymerized from the surface of the substrate. These chemical modifications were confirmed step by step using spectroscopes to obtain the hydrophilic surface of the poly(MPC)-modified PTFE. The protein adsorption behaviors on PTFE and poly(MPC)-modified PTFE were compared to understand biocompatibility characteristics of these substrates. The surface of PTFE was immediately covered with albumin and the contact between the substrate and the serum resulted in an increase in the fibrinogen composition with time. On the other hand, fewer proteins were adsorbed on the poly(MPC)-modified PTFE substrate. Thus, this modification procedure would serve as a strategy for safer alterations in PTFE surfaces to expand the life span of the PTFE-carrying medical devices in living systems.
Collapse
|