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Van Daele L, Chausse V, Parmentier L, Brancart J, Pegueroles M, Van Vlierberghe S, Dubruel P. 3D-Printed Shape Memory Poly(alkylene terephthalate) Scaffolds as Cardiovascular Stents Revealing Enhanced Endothelialization. Adv Healthc Mater 2024; 13:e2303498. [PMID: 38329408 DOI: 10.1002/adhm.202303498] [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: 10/12/2023] [Revised: 02/02/2024] [Indexed: 02/09/2024]
Abstract
Cardiovascular diseases are the leading cause of death and current treatments such as stents still suffer from disadvantages. Balloon expansion causes damage to the arterial wall and limited and delayed endothelialization gives rise to restenosis and thrombosis. New more performing materials that circumvent these disadvantages are required to improve the success rate of interventions. To this end, the use of a novel polymer, poly(hexamethylene terephthalate), is investigated for this application. The synthesis to obtain polymers with high molar masses up to 126.5 kg mol-1 is optimized and a thorough chemical and thermal analysis is performed. The polymers are 3D-printed into personalized cardiovascular stents using the state-of-the-art solvent-cast direct-writing technique, the potential of these stents to expand using their shape memory behavior is established, and it is shown that the stents are more resistant to compression than the poly(l-lactide) benchmark. Furthermore, the polymer's hydrolytic stability is demonstrated in an accelerated degradation study of 6 months. Finally, the stents are subjected to an in vitro biological evaluation, revealing that the polymer is non-hemolytic and supports significant endothelialization after only 7 days, demonstrating the enormous potential of these polymers to serve cardiovascular applications.
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Affiliation(s)
- Lenny Van Daele
- Polymer Chemistry and Biomaterials Group (PBM), Centre of Macromolecular Chemistry (CMaC), Department of Organic and Macromolecular Chemistry, Ghent University, Krijgslaan 281 S4-bis, Ghent, B-9000, Belgium
| | - Victor Chausse
- Biomaterials, Biomechanics and Tissue Engineering Group, Department of Materials Science and Engineering, Universitat Politècnica de Catalunya (UPC), EEBE, Barcelona, 08019, Spain
| | - Laurens Parmentier
- Polymer Chemistry and Biomaterials Group (PBM), Centre of Macromolecular Chemistry (CMaC), Department of Organic and Macromolecular Chemistry, Ghent University, Krijgslaan 281 S4-bis, Ghent, B-9000, Belgium
| | - Joost Brancart
- Physical Chemistry and Polymer Science (FYSC), Vrije Universiteit Brussel, Pleinlaan 2, Brussels, 1050, Belgium
| | - Marta Pegueroles
- Biomaterials, Biomechanics and Tissue Engineering Group, Department of Materials Science and Engineering, Universitat Politècnica de Catalunya (UPC), EEBE, Barcelona, 08019, Spain
| | - Sandra Van Vlierberghe
- Polymer Chemistry and Biomaterials Group (PBM), Centre of Macromolecular Chemistry (CMaC), Department of Organic and Macromolecular Chemistry, Ghent University, Krijgslaan 281 S4-bis, Ghent, B-9000, Belgium
| | - Peter Dubruel
- Polymer Chemistry and Biomaterials Group (PBM), Centre of Macromolecular Chemistry (CMaC), Department of Organic and Macromolecular Chemistry, Ghent University, Krijgslaan 281 S4-bis, Ghent, B-9000, Belgium
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2
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Duan X, Yang Y, Zhang T, Zhu B, Wei G, Li H. Research progress of metal biomaterials with potential applications as cardiovascular stents and their surface treatment methods to improve biocompatibility. Heliyon 2024; 10:e25515. [PMID: 38375258 PMCID: PMC10875388 DOI: 10.1016/j.heliyon.2024.e25515] [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: 10/26/2023] [Revised: 01/23/2024] [Accepted: 01/29/2024] [Indexed: 02/21/2024] Open
Abstract
Facing the growing issue of cardiovascular diseases, metallic materials with higher tensile strength and fatigue resistance play an important role in treating diseases. This review lists the advantages and drawbacks of commonly used medical metallic materials for vascular stents. To avoid post-procedural threats such as thrombosis and in-stent restenosis, surface treatments, and coating methods have been used to further improve the biocompatibility of these materials. Surface treatments including laser, plasma treatment, polishing, oxidization, and fluorination can improve biocompatibility by modifying the surface charges, surface morphology, and surface properties of the material. Coating methods based on polymer coatings, carbon-based coatings, and drug-functional coatings can regulate the surface properties, and also serve as an effective barrier to the interaction of metallic biomaterial surfaces with biomolecules, which can be used to improve corrosion resistance and stability, as well as improve their biocompatibility. Biocompatibility serves as the most fundamental property of cardiovascular stents, and maintaining the excellent and stable biocompatibility of cardiovascular stent surfaces is a current research bottleneck. Few reviews have been published on metallic biomaterials as cardiovascular stents and their surface treatments. For the purpose of advancing research on cardiovascular stents, common metal biomaterials, surface treatment methods, and coating methods to improve biocompatibility and comprehensive properties of the materials are described in this review. Finally, we suggest future directions for stent development, including continuously improving the durability and stability of permanent stents, accelerating the development of biodegradable stents, and strengthening feedback to improve the safety and reliability of cardiovascular stents.
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Affiliation(s)
- Xuejia Duan
- College of Materials and Chemistry, China Jiliang University, Hangzhou, Zhejiang 310018, China
- Division of Chemistry and Analytical Science, National Institute of Metrology, Beijing, China
| | - Yumeng Yang
- College of Materials and Chemistry, China Jiliang University, Hangzhou, Zhejiang 310018, China
| | - Tianji Zhang
- Division of Chemistry and Analytical Science, National Institute of Metrology, Beijing, China
- Key Laboratory of Chemical Metrology and Applications on Nutrition and Health for State Market Regulation, China
| | - Benfeng Zhu
- College of Materials and Chemistry, China Jiliang University, Hangzhou, Zhejiang 310018, China
| | - Guoying Wei
- College of Materials and Chemistry, China Jiliang University, Hangzhou, Zhejiang 310018, China
| | - Hongmei Li
- Division of Chemistry and Analytical Science, National Institute of Metrology, Beijing, China
- Key Laboratory of Chemical Metrology and Applications on Nutrition and Health for State Market Regulation, China
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3
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Shi X, Li X, Tian Y, Qu X, Zhai S, Liu Y, Jia W, Cui Y, Chu S. Physical, mechanical, and biological properties of collagen membranes for guided bone regeneration: a comparative in vitro study. BMC Oral Health 2023; 23:510. [PMID: 37481548 PMCID: PMC10362553 DOI: 10.1186/s12903-023-03223-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2023] [Accepted: 07/11/2023] [Indexed: 07/24/2023] Open
Abstract
BACKGROUND To provide a reference for clinical selection of collagen membranes by analyzing the properties of three kinds of collagen membranes widely used in clinics: Bio-Gide membrane from porcine dermis (PD), Heal-All membrane from bovine dermis (BD), and Lyoplant membrane from bovine pericardium (BP). METHODS The barrier function of three kinds of collagen membranes were evaluated by testing the surface morphology, mechanical properties, hydrophilicity, and degradation rate of collagen membranes in collagenase and artificial saliva. In addition, the bioactivity of each collagen membrane as well as the proliferation and osteogenesis of MC3T3-E1 cells were evaluated. Mass spectrometry was also used to analyze the degradation products. RESULTS The BP membrane had the highest tensile strength and Young's modulus as well as the largest water contact angle. The PD membrane exhibited the highest elongation at break, the smallest water contact angle, and the lowest degradation weight loss. The BD membrane had the highest degradation weight loss, the highest number of proteins in its degradation product, the strongest effect on the proliferation of MC3T3-E1 cells, and the highest expression level of osteogenic genes. CONCLUSIONS The PD membrane is the best choice for shaping and maintenance time, while the BD membrane is good for osteogenesis, and the BP membrane is suitable for spatial maintenance. To meet the clinical requirements of guided bone regeneration, using two different kinds of collagen membranes concurrently to exert their respective advantages is an option worth considering.
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Affiliation(s)
- Xiaolu Shi
- Department of Implantology, Hospital of Stomatology, Jilin University, Changchun, China
| | - Xianjing Li
- Department of Implantology, Hospital of Stomatology, Jilin University, Changchun, China
| | - Ye Tian
- Department of Implantology, Hospital of Stomatology, Jilin University, Changchun, China
| | - Xinyao Qu
- Department of Drug Clinical Trial, the Affiliated Hospital to Changchun University of Chinese Medicine, Changchun, China
| | - Shaobo Zhai
- Department of Implantology, Hospital of Stomatology, Jilin University, Changchun, China
| | - Yang Liu
- Department of Implantology, Hospital of Stomatology, Jilin University, Changchun, China
| | - Wei Jia
- Yongchang Community Health Service Center of Chaoyang District, Changchun, China
| | - Yan Cui
- Department of Dermatology and Venereology, First Hospital of Jilin University, Jilin University, Changchun, China.
| | - Shunli Chu
- Department of Implantology, Hospital of Stomatology, Jilin University, Changchun, China.
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4
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Biomimetic and Bioactive Small Diameter Tubular Scaffolds for Vascular Tissue Engineering. Biomimetics (Basel) 2022; 7:biomimetics7040199. [PMID: 36412727 PMCID: PMC9680506 DOI: 10.3390/biomimetics7040199] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2022] [Revised: 11/03/2022] [Accepted: 11/07/2022] [Indexed: 11/16/2022] Open
Abstract
The present work aimed at the production and characterization of small caliber biomimetic and bioactive tubular scaffolds, which are able to favor the endothelialization process, and therefore potentially be suitable for vascular tissue engineering. The tubular scaffolds were produced using a specially designed mold, starting from a gelatin/gellan/elastin (GGE) blend, selected to mimic the composition of the extracellular matrix of native blood vessels. GGE scaffolds were obtained through freeze-drying and subsequent cross-linking. To obtain systems capable of promoting endothelization, the scaffolds were functionalized using two different bioactive peptides, Gly-Arg-Gly-Asp-Ser-Pro (GRGSDP) and Arg-Glu-Asp-Val (REDV). A complete physicochemical, mechanical, functional, and biological characterization of the developed scaffolds was performed. GGE scaffolds showed a good porosity, which could promote cell infiltration and proliferation and a dense external surface, which could avoid bleeding. Moreover, developed scaffolds showed good hydrophilicity, an elastic behavior similar to natural vessels, suitability for sterilization by an ISO accepted treatment, and an adequate suture retention strength. In vitro cell culture tests showed no cytotoxic activity against 3T3 fibroblasts. The functionalization with the REDV peptide favored the adhesion and growth of endothelial cells, while GRGDSP-modified scaffolds represented a better substrate for fibroblasts.
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5
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Fallon ME, Le HH, Bates NM, Yao Y, Yim EK, Hinds MT, Anderson DE. Hemocompatibility of micropatterned biomaterial surfaces is dependent on topographical feature size. Front Physiol 2022; 13:983187. [PMID: 36200053 PMCID: PMC9527343 DOI: 10.3389/fphys.2022.983187] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Accepted: 08/18/2022] [Indexed: 11/13/2022] Open
Abstract
Small-diameter synthetic vascular grafts that have improved hemocompatibility and patency remain an unmet clinical need due to thrombosis. A surface modification that has potential to attenuate these failure mechanisms while promoting an endothelial layer is the micropatterning of luminal surfaces. Anisotropic features have been shown to downregulate smooth muscle cell proliferation, direct endothelial migration, and attenuate platelet adhesion and activation. However, the effect of micropatterning feature size and orientation relative to whole blood flow has yet to be investigated within a systematic study. In this work, hemocompatibility of micropattern grating sizes of 2, 5, and 10 µm were investigated. The thrombogenicity of the micropattern surface modifications were characterized by quantifying FXIIa activity, fibrin formation, and static platelet adhesion in vitro. Additionally, dynamic platelet attachment and end-point fibrin formation were quantified using an established, flowing whole blood ex vivo non-human primate shunt model without antiplatelet or anticoagulant therapies. We observed a higher trend in platelet attachment and significantly increased fibrin formation for larger features. We then investigated the orientation of 2 µm gratings relative to whole blood flow and found no significant differences between the various orientations for platelet attachment, rate of linear platelet attachment, or end-point fibrin formation. MicroCT analysis of micropatterned grafts was utilized to quantify luminal patency. This work is a significant step in the development of novel synthetic biomaterials with improved understanding of hemocompatibility for use in cardiovascular applications.
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Affiliation(s)
- Meghan E. Fallon
- Department of Biomedical Engineering, Oregon Health & Science University, Portland, OR, United States
| | - Hillary H. Le
- Department of Biomedical Engineering, Oregon Health & Science University, Portland, OR, United States
| | - Novella M. Bates
- Department of Biomedical Engineering, Oregon Health & Science University, Portland, OR, United States
| | - Yuan Yao
- Department of Chemical Engineering, University of Waterloo, Waterloo, ON, Canada
| | - Evelyn K.F. Yim
- Department of Chemical Engineering, University of Waterloo, Waterloo, ON, Canada
| | - Monica T. Hinds
- Department of Biomedical Engineering, Oregon Health & Science University, Portland, OR, United States
| | - Deirdre E.J. Anderson
- Department of Biomedical Engineering, Oregon Health & Science University, Portland, OR, United States
- *Correspondence: Deirdre E.J. Anderson,
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Zhu M, Zhang R, Mao Z, Fang J, Ren F. Topographical biointerface regulating cellular functions for bone tissue engineering. BIOSURFACE AND BIOTRIBOLOGY 2022. [DOI: 10.1049/bsb2.12043] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Affiliation(s)
- Mingyu Zhu
- Department of Materials Science and Engineering Southern University of Science and Technology Shenzhen Guangdong China
| | - Rui Zhang
- Department of Prosthodontics Stomatology Center Peking University Shenzhen Hospital Shenzhen Guangdong China
| | - Zhixiang Mao
- Department of Materials Science and Engineering Southern University of Science and Technology Shenzhen Guangdong China
| | - Ju Fang
- Department of Materials Science and Engineering Southern University of Science and Technology Shenzhen Guangdong China
| | - Fuzeng Ren
- Department of Materials Science and Engineering Southern University of Science and Technology Shenzhen Guangdong China
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7
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Schieber R, Mas-Moruno C, Lasserre F, Roa JJ, Ginebra MP, Mücklich F, Pegueroles M. Effectiveness of Direct Laser Interference Patterning and Peptide Immobilization on Endothelial Cell Migration for Cardio-Vascular Applications: An In Vitro Study. NANOMATERIALS 2022; 12:nano12071217. [PMID: 35407334 PMCID: PMC9002369 DOI: 10.3390/nano12071217] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/26/2021] [Revised: 03/25/2022] [Accepted: 03/28/2022] [Indexed: 12/12/2022]
Abstract
Endothelial coverage of an exposed cardiovascular stent surface leads to the occurrence of restenosis and late-stent thrombosis several months after implantation. To overcome this difficulty, modification of stent surfaces with topographical or biochemical features may be performed to increase endothelial cells’ (ECs) adhesion and/or migration. This work combines both strategies on cobalt-chromium (CoCr) alloy and studies the potential synergistic effect of linear patterned surfaces that are obtained by direct laser interference patterning (DLIP), coupled with the use of Arg-Gly-Asp (RGD) and Tyr-Ile-Gly-Ser-Arg (YIGSR) peptides. An extensive characterization of the modified surfaces was performed by using AFM, XPS, surface charge, electrochemical analysis and fluorescent methods. The biological response was studied in terms of EC adhesion, migration and proliferation assays. CoCr surfaces were successfully patterned with a periodicity of 10 µm and two different depths, D (≈79 and 762 nm). RGD and YIGSR were immobilized on the surfaces by CPTES silanization. Early EC adhesion was increased on the peptide-functionalized surfaces, especially for YIGSR compared to RGD. High-depth patterns generated 80% of ECs’ alignment within the topographical lines and enhanced EC migration. It is noteworthy that the combined use of the two strategies synergistically accelerated the ECs’ migration and proliferation, proving the potential of this strategy to enhance stent endothelialization.
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Affiliation(s)
- Romain Schieber
- Biomaterials, Biomechanics and Tissue Engineering Group, Department of Materials Science and Engineering, Barcelona East School of Engineering (EEBE), Universitat Politècnica de Catalunya (UPC), Av. Eduard Maristany, 10-14, 08019 Barcelona, Spain; (R.S.); (C.M.-M.); (M.-P.G.)
- Barcelona Research Center in Multiscale Science and Engineering, Universitat Politècnica de Catalunya (UPC), 08019 Barcelona, Spain;
- Chair of Functional Materials, Faculty of Natural Sciences and Technology, Saarland University, 66123 Saarbrücken, Germany; (F.L.); (F.M.)
| | - Carlos Mas-Moruno
- Biomaterials, Biomechanics and Tissue Engineering Group, Department of Materials Science and Engineering, Barcelona East School of Engineering (EEBE), Universitat Politècnica de Catalunya (UPC), Av. Eduard Maristany, 10-14, 08019 Barcelona, Spain; (R.S.); (C.M.-M.); (M.-P.G.)
- Barcelona Research Center in Multiscale Science and Engineering, Universitat Politècnica de Catalunya (UPC), 08019 Barcelona, Spain;
| | - Federico Lasserre
- Chair of Functional Materials, Faculty of Natural Sciences and Technology, Saarland University, 66123 Saarbrücken, Germany; (F.L.); (F.M.)
| | - Joan Josep Roa
- Barcelona Research Center in Multiscale Science and Engineering, Universitat Politècnica de Catalunya (UPC), 08019 Barcelona, Spain;
- Structural Integrity, Micromechanics and Reliability of Materials Group, Department of Materials Science and Metallurgical Engineering, Barcelona East School of Engineering (EEBE), Universitat Politècnica de Catalunya (UPC), 08019 Barcelona, Spain
| | - Maria-Pau Ginebra
- Biomaterials, Biomechanics and Tissue Engineering Group, Department of Materials Science and Engineering, Barcelona East School of Engineering (EEBE), Universitat Politècnica de Catalunya (UPC), Av. Eduard Maristany, 10-14, 08019 Barcelona, Spain; (R.S.); (C.M.-M.); (M.-P.G.)
- Barcelona Research Center in Multiscale Science and Engineering, Universitat Politècnica de Catalunya (UPC), 08019 Barcelona, Spain;
- Institute for Bioengineering of Catalonia (IBEC), 08028 Barcelona, Spain
| | - Frank Mücklich
- Chair of Functional Materials, Faculty of Natural Sciences and Technology, Saarland University, 66123 Saarbrücken, Germany; (F.L.); (F.M.)
| | - Marta Pegueroles
- Biomaterials, Biomechanics and Tissue Engineering Group, Department of Materials Science and Engineering, Barcelona East School of Engineering (EEBE), Universitat Politècnica de Catalunya (UPC), Av. Eduard Maristany, 10-14, 08019 Barcelona, Spain; (R.S.); (C.M.-M.); (M.-P.G.)
- Barcelona Research Center in Multiscale Science and Engineering, Universitat Politècnica de Catalunya (UPC), 08019 Barcelona, Spain;
- Correspondence: ; Tel.: +34-934-054-154
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8
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Effect of Controlled Microtopography on Osteogenic Differentiation of Mesenchymal Stem Cells. JOURNAL OF HEALTHCARE ENGINEERING 2022; 2022:7179723. [PMID: 35126944 PMCID: PMC8816539 DOI: 10.1155/2022/7179723] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/11/2021] [Accepted: 01/13/2022] [Indexed: 12/14/2022]
Abstract
Various kinds of controlled microtopographies can promote osteogenic differentiation of mesenchymal stem cells (MSCs), such as microgrooves, micropillars, and micropits. However, the optimal shape, size, and mechanism remain unclear. In this review, we summarize the relationship between the parameters of different microtopographies and the behavior of MSCs. Then, we try to reveal the potential mechanism between them. The results showed that the microgrooves with a width of 4–60 μm and ridge width <10 μm, micropillars with parameters less than 10 μm, and square micropits had the full potential to promote osteogenic differentiation of MSCs, while the micromorphology of the same size could induce larger focal adhesions (FAs), well-organized cytoskeleton, and superior cell areas. Therefore, such events are possibly mediated by microtopography-induced mechanotransduction pathways.
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9
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Bian Q, Chen J, Weng Y, Li S. Endothelialization strategy of implant materials surface: The newest research in recent 5 years. J Appl Biomater Funct Mater 2022; 20:22808000221105332. [PMID: 35666145 DOI: 10.1177/22808000221105332] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
In recent years, more and more metal or non-metal materials have been used in the treatment of cardiovascular diseases, but the vascular complications after transplantation are still the main factors restricting the clinical application of most grafts, such as acute thrombosis and graft restenosis. Implant materials have been extensively designed and surface optimized by researchers, but it is still too difficult to avoid complications. Natural vascular endodermis has excellent function, anti-coagulant and anti-intimal hyperplasia, and it is also the key to maintaining the homeostasis of normal vascular microenvironment. Therefore, how to promote the adhesion of endothelial cells (ECs) on the surface of cardiovascular materials to achieve endothelialization of the surface is the key to overcoming the complications after implant materialization. At present, the surface endothelialization design of materials based on materials surface science, bioactive molecules, and biological function intervention and feedback has attracted much attention. In this review, we summarize the related research on the surface modification of materials by endothelialization in recent years, and analyze the advantages and challenges of current endothelialization design ideas, explain the relationship between materials, cells, and vascular remodeling in order to find a more ideal endothelialization surface modification strategy for future researchers to meet the requirements of clinical biocompatibility of cardiovascular materials.
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Affiliation(s)
- Qihao Bian
- Key Laboratory of Advanced Technology of Materials, Ministry of Education, Southwest Jiaotong University, Chengdu, China.,School of Life Science and Engineering, Southwest Jiaotong University, Chengdu, China
| | - Junying Chen
- Key Laboratory of Advanced Technology of Materials, Ministry of Education, Southwest Jiaotong University, Chengdu, China.,School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu, China
| | - Yajun Weng
- Key Laboratory of Advanced Technology of Materials, Ministry of Education, Southwest Jiaotong University, Chengdu, China.,School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu, China
| | - Suiyan Li
- School of Life Science and Engineering, Southwest Jiaotong University, Chengdu, China
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10
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Gao S, Lei Z, Wu H. Ligustrazine suppresses platelet aggregation through inhibiting the activities of calcium sensors. BRAZ J PHARM SCI 2022. [DOI: 10.1590/s2175-97902022e20101] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Affiliation(s)
- Shuibo Gao
- Henan University of Chinese Medicine, China
| | - Zhen Lei
- Henan University of Chinese Medicine, China
| | - Hong Wu
- Henan University of Chinese Medicine, China; Henan University of Chinese Medicine, China
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11
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Dong J, Pacella M, Liu Y, Zhao L. Surface engineering and the application of laser-based processes to stents - A review of the latest development. Bioact Mater 2021; 10:159-184. [PMID: 34901537 PMCID: PMC8636930 DOI: 10.1016/j.bioactmat.2021.08.023] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Revised: 08/04/2021] [Accepted: 08/20/2021] [Indexed: 12/21/2022] Open
Abstract
Late in-stent thrombus and restenosis still represent two major challenges in stents’ design. Surface treatment of stent is attracting attention due to the increasing importance of stenting intervention for coronary artery diseases. Several surface engineering techniques have been utilised to improve the biological response in vivo on a wide range of biomedical devices. As a tailorable, precise, and ultra-fast process, laser surface engineering offers the potential to treat stent materials and fabricate various 3D textures, including grooves, pillars, nanowires, porous and freeform structures, while also modifying surface chemistry through nitridation, oxidation and coatings. Laser-based processes can reduce the biodegradable materials' degradation rate, offering many advantages to improve stents’ performance, such as increased endothelialisation rate, prohibition of SMC proliferation, reduced platelet adhesion and controlled corrosion and degradation. Nowadays, adequate research has been conducted on laser surface texturing and surface chemistry modification. Laser texturing on commercial stents has been also investigated and a promotion of performance of laser-textured stents has been proved. In this critical review, the influence of surface texture and surface chemistry on stents performance is firstly reviewed to understand the surface characteristics of stents required to facilitate cellular response. This is followed by the explicit illustration of laser surface engineering of stents and/or related materials. Laser induced periodic surface structure (LIPSS) on stent materials is then explored, and finally the application of laser surface modification techniques on latest generation of stent devices is highlighted to provide future trends and research direction on laser surface engineering of stents. Compared conventional surface engineering with laser-based methods for biomedical devices. Explained the influence of texture geometry and surface chemistry on stents biological response. Reviewed state of the art in laser surface engineering of stents for improved biological response. Reviewed state of the art in laser surface engineering to control degradation of bioresorbable stents. Highlighted novel laser surface engineering designs for improved stents'performance.
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Affiliation(s)
- J Dong
- Wolfson School of Mechanical, Electrical and Manufacturing Engineering, Loughborough University, Loughborough, Leicestershire, LE11 3TU, UK
| | - M Pacella
- Wolfson School of Mechanical, Electrical and Manufacturing Engineering, Loughborough University, Loughborough, Leicestershire, LE11 3TU, UK
| | - Y Liu
- Wolfson School of Mechanical, Electrical and Manufacturing Engineering, Loughborough University, Loughborough, Leicestershire, LE11 3TU, UK.,Centre for Biological Engineering, Loughborough University, Loughborough, Leicestershire, LE11 3TU, UK
| | - L Zhao
- Wolfson School of Mechanical, Electrical and Manufacturing Engineering, Loughborough University, Loughborough, Leicestershire, LE11 3TU, UK
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12
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Guo Y, Mi J, Ye C, Ao Y, Shi M, Shan Z, Li B, Chen Z, Chen Z, Vasilev K, Xiao Y. A practical guide to promote informatics-driven efficient biotopographic material development. Bioact Mater 2021; 8:515-528. [PMID: 34541417 PMCID: PMC8433058 DOI: 10.1016/j.bioactmat.2021.06.013] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2021] [Revised: 05/31/2021] [Accepted: 06/10/2021] [Indexed: 01/14/2023] Open
Abstract
Micro/nano topographic structures have shown great utility in many biomedical areas including cell therapies, tissue engineering, and implantable devices. Computer-assisted informatics methods hold great promise for the design of topographic structures with targeted properties for a specific medical application. To benefit from these methods, researchers and engineers require a highly reusable “one structural parameter – one set of cell responses” database. However, existing confounding factors in topographic cell culture devices seriously impede the acquisition of this kind of data. Through carefully dissecting the confounding factors and their possible reasons for emergence, we developed corresponding guideline requirements for topographic cell culture device development to remove or control the influence of such factors. Based on these requirements, we then suggested potential strategies to meet them. In this work, we also experimentally demonstrated a topographic cell culture device with controlled confounding factors based on these guideline requirements and corresponding strategies. A “guideline for the development of topographic cell culture devices” was summarized to instruct researchers to develop topographic cell culture devices with the confounding factors removed or well controlled. This guideline aims to promote the establishment of a highly reusable “one structural parameter – one set of cell responses” database that could facilitate the application of informatics methods, such as artificial intelligence, in the rational design of future biotopographic structures with high efficacy.
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Affiliation(s)
- Yuanlong Guo
- Hospital of Stomatology, Guanghua School of Stomatology, Sun Yat-sen University and Guangdong Research Center for Dental and Cranial Rehabilitation and Material Engineering, Guangzhou, 510055, China
| | - Jiaomei Mi
- Hospital of Stomatology, Guanghua School of Stomatology, Sun Yat-sen University and Guangdong Research Center for Dental and Cranial Rehabilitation and Material Engineering, Guangzhou, 510055, China
| | - Chen Ye
- Hospital of Stomatology, Guanghua School of Stomatology, Sun Yat-sen University and Guangdong Research Center for Dental and Cranial Rehabilitation and Material Engineering, Guangzhou, 510055, China
| | - Yong Ao
- Hospital of Stomatology, Guanghua School of Stomatology, Sun Yat-sen University and Guangdong Research Center for Dental and Cranial Rehabilitation and Material Engineering, Guangzhou, 510055, China
| | - Mengru Shi
- Hospital of Stomatology, Guanghua School of Stomatology, Sun Yat-sen University and Guangdong Research Center for Dental and Cranial Rehabilitation and Material Engineering, Guangzhou, 510055, China
| | - Zhengjie Shan
- Hospital of Stomatology, Guanghua School of Stomatology, Sun Yat-sen University and Guangdong Research Center for Dental and Cranial Rehabilitation and Material Engineering, Guangzhou, 510055, China
| | - Bingzhi Li
- Hospital of Stomatology, Guanghua School of Stomatology, Sun Yat-sen University and Guangdong Research Center for Dental and Cranial Rehabilitation and Material Engineering, Guangzhou, 510055, China
| | - Zetao Chen
- Hospital of Stomatology, Guanghua School of Stomatology, Sun Yat-sen University and Guangdong Research Center for Dental and Cranial Rehabilitation and Material Engineering, Guangzhou, 510055, China
- Corresponding author.
| | - Zhuofan Chen
- Hospital of Stomatology, Guanghua School of Stomatology, Sun Yat-sen University and Guangdong Research Center for Dental and Cranial Rehabilitation and Material Engineering, Guangzhou, 510055, China
| | - Krasimir Vasilev
- Academic Unit of Science, Technology, Engineering and Mathematics (STEM), University of South Australia, Mawson Lakes, SA, 5095, Australia
| | - Yin Xiao
- Institute of Health and Biomedical Innovation, Queensland University of Technology, Brisbane, 4059, Australia
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13
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Cortella LRX, Cestari IA, Lahuerta RD, Araña MC, Soldera M, Rank A, Lasagni AF, Cestari IN. Conditioning of hiPSC-derived cardiomyocytes using surface topography obtained with high throughput technology. Biomed Mater 2021; 16. [PMID: 34412045 DOI: 10.1088/1748-605x/ac1f73] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2020] [Accepted: 08/19/2021] [Indexed: 12/31/2022]
Abstract
Surface functionalization of polymers aims to introduce novel properties that favor bioactive responses. We have investigated the possibility of surface functionalization of polyethylene terephthalate (PET) sheets by the combination of laser ablation with hot embossing and the application of such techniques in the field of stem cell research. We investigated the response of human induced pluripotent stem cell-derived cardiomyocytes (hiPSC-CMs) to topography in the low micrometer range. HiPSC-CMs are expected to offer new therapeutic tools for myocardial replacement or regeneration after an infarct or other causes of cardiac tissue loss. However, hiPSC-CMs are phenotypically immature compared to myocytes in the adult myocardium, hampering their clinical application. We aimed to develop and test a high-throughput technique for surface structuring that would improve hiPSC-CMs structural maturation. We used laser ablation with a ps-laser source in combination with nanoimprint lithography to fabricate large areas of homogeneous micron- to submicron line-like pattern with a spatial period of 3 µm on the PET surface. We evaluated cell morphology, alignment, sarcomeric myofibrils assembly, and calcium transients to evaluate phenotypic changes associated with culturing hiPSC-CMs on functionalized PET. Surface functionalization through hot embossing was able to generate, at low cost, low micrometer features on the PET surface that influenced the hiPSC-CMs phenotype, suggesting improved structural and functional maturation. This technique may be relevant for high-throughput technologies that require conditioning of hiPSC-CMs and may be useful for the production of these cells for drug screening and disease modeling applications with lower costs.
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Affiliation(s)
- Lucas R X Cortella
- Bioengineering Department, Heart Institute (InCor), University of São Paulo Medical School, Av. Dr Enéas de Carvalho Aguiar, 44, 05403-900 São Paulo, Brazil
| | - Idágene A Cestari
- Bioengineering Department, Heart Institute (InCor), University of São Paulo Medical School, Av. Dr Enéas de Carvalho Aguiar, 44, 05403-900 São Paulo, Brazil
| | - Ricardo D Lahuerta
- Bioengineering Department, Heart Institute (InCor), University of São Paulo Medical School, Av. Dr Enéas de Carvalho Aguiar, 44, 05403-900 São Paulo, Brazil
| | - Matheus C Araña
- Bioengineering Department, Heart Institute (InCor), University of São Paulo Medical School, Av. Dr Enéas de Carvalho Aguiar, 44, 05403-900 São Paulo, Brazil
| | - Marcos Soldera
- Institute for Manufacturing Technology, Technische Universität Dresden, George-Baehr-Str. 3c, 01069 Dresden, Germany.,PROBIEN-CONICET, Dto. de Electrotecnia, Universidad Nacional del Comahue, Buenos Aires 1400, 8300 Neuquén, Argentina
| | - Andreas Rank
- Institute for Manufacturing Technology, Technische Universität Dresden, George-Baehr-Str. 3c, 01069 Dresden, Germany
| | - Andrés F Lasagni
- Institute for Manufacturing Technology, Technische Universität Dresden, George-Baehr-Str. 3c, 01069 Dresden, Germany.,Fraunhofer-Institut für Werkstoff- und Strahltechnik IWS, Winterbergstr. 28, 01277 Dresden, Germany
| | - Ismar N Cestari
- Bioengineering Department, Heart Institute (InCor), University of São Paulo Medical School, Av. Dr Enéas de Carvalho Aguiar, 44, 05403-900 São Paulo, Brazil
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14
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Manoharan K, Anwar MT, Bhattacharya S. Development of hydrophobic paper substrates using silane and sol-gel based processes and deriving the best coating technique using machine learning strategies. Sci Rep 2021; 11:11352. [PMID: 34059740 PMCID: PMC8167096 DOI: 10.1038/s41598-021-90855-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2021] [Accepted: 05/19/2021] [Indexed: 11/08/2022] Open
Abstract
Low energy surface coatings have found wide range of applications for generating hydrophobic and superhydrophobic surfaces. Most of the studies have been related to use of a single coating material over a single substrate or using a single technique. The degree of hydrophobicity is highly dependent on fabrication processes as well as materials being coated and as such warrants a high-level study using experimental optimization leading to the evaluation of the parametric behavior of coatings and their application techniques. Also, a single platform or system which can predict the required set of parameters for generating hydrophobic surface of required nature for given substrate is of requirement. This work applies the powerful machine learning algorithms (Levenberg Marquardt using Gauss Newton and Gradient methods) to evaluate the various processes affecting the anti-wetting behavior of coated printable paper substrates with the capability to predict the most optimized method of coating and materials that may lead to a desirable surface contact angle. The major application techniques used for this study pertain to dip coating, spray coating, spin coating and inkjet printing and silane and sol-gel base coating materials.
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Affiliation(s)
- Kapil Manoharan
- Microsystems Fabrication Lab, Department of Mechanical Engineering, Indian Institute of Technology Kanpur, Kanpur, India
| | | | - Shantanu Bhattacharya
- Microsystems Fabrication Lab, Department of Mechanical Engineering, Indian Institute of Technology Kanpur, Kanpur, India.
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15
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Scafa Udriște A, Niculescu AG, Grumezescu AM, Bădilă E. Cardiovascular Stents: A Review of Past, Current, and Emerging Devices. MATERIALS (BASEL, SWITZERLAND) 2021; 14:2498. [PMID: 34065986 PMCID: PMC8151529 DOI: 10.3390/ma14102498] [Citation(s) in RCA: 37] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/07/2021] [Revised: 05/10/2021] [Accepted: 05/10/2021] [Indexed: 12/11/2022]
Abstract
One of the leading causes of morbidity and mortality worldwide is coronary artery disease, a condition characterized by the narrowing of the artery due to plaque deposits. The standard of care for treating this disease is the introduction of a stent at the lesion site. This life-saving tubular device ensures vessel support, keeping the blood-flow path open so that the cardiac muscle receives its vital nutrients and oxygen supply. Several generations of stents have been iteratively developed towards improving patient outcomes and diminishing adverse side effects following the implanting procedure. Moving from bare-metal stents to drug-eluting stents, and recently reaching bioresorbable stents, this research field is under continuous development. To keep up with how stent technology has advanced in the past few decades, this paper reviews the evolution of these devices, focusing on how they can be further optimized towards creating an ideal vascular scaffold.
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Affiliation(s)
- Alexandru Scafa Udriște
- Carol Davila University of Medicine and Pharmacy, 050474 Bucharest, Romania; (A.S.U.); (E.B.)
- Cardiology Department, Clinical Emergency Hospital Bucharest, 014461 Bucharest, Romania
| | - Adelina-Gabriela Niculescu
- Faculty of Engineering in Foreign Languages, University Politehnica of Bucharest, 060042 Bucharest, Romania;
| | - Alexandru Mihai Grumezescu
- Faculty of Applied Chemistry and Materials Science, University Politehnica of Bucharest, 060042 Bucharest, Romania
- Research Institute of the University of Bucharest—ICUB, University of Bucharest, 050657 Bucharest, Romania
| | - Elisabeta Bădilă
- Carol Davila University of Medicine and Pharmacy, 050474 Bucharest, Romania; (A.S.U.); (E.B.)
- Internal Medicine Department, Clinical Emergency Hospital Bucharest, 014461 Bucharest, Romania
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16
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Parbat D, Bhunia BK, Mandal BB, Manna U. Bio-inspired Underwater Super-Oil-Wettability for Controlling Platelet Adhesion. Chem Asian J 2021; 16:1081-1085. [PMID: 33742553 DOI: 10.1002/asia.202100143] [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: 02/08/2021] [Revised: 03/18/2021] [Indexed: 01/07/2023]
Abstract
Control promotion and prevention of platelet adhesion are important for various biomedical applications. In the past, surface topography and chemical modifications have been commonly utilized for tailoring the promotion and prevention of platelet adhesion. Recently, lotus-leaf-inspired superhydrophobicity has appeared as an efficient avenue to prevent platelet adhesion. However, such extreme water repellent interfaces fail to perform upon prolonged and continuous exposure to aqueous phase. In this communication, the strategic use of a catalyst-free 1,4-conjugate addition reaction between amine and acrylate allowed us to investigate the impact of two distinct underwater oil-wettability on platelet adhesion activity. While underwater superoleophobicity inhibited platelet-adhesion, a highly aggregated fibrous network of adhered platelets was observed on underwater superoleophilic coating. Further, this biocompatible and haemocompatible underwater superoleophobic multilayer coating was deposited on a commercially available catheter tube to examine its potential towards the prevention of platelet attachment.
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Affiliation(s)
- Dibyangana Parbat
- Bio-Inspired Polymeric Materials Lab, Department of Chemistry, Indian Institute of Technology-Guwahati, Kamrup, Assam, 781039, India
| | - Bibhas K Bhunia
- Biomaterial and Tissue Engineering laboratory, Department of Biosciences and Bioengineering, Indian Institute of Technology-Guwahati, Kamrup, Assam, 781039, India
| | - Biman B Mandal
- Biomaterial and Tissue Engineering laboratory, Department of Biosciences and Bioengineering, Indian Institute of Technology-Guwahati, Kamrup, Assam, 781039, India.,Centre for Nanotechnology, Indian Institute of Technology-Guwahati, Kamrup, Assam, 781039, India
| | - Uttam Manna
- Bio-Inspired Polymeric Materials Lab, Department of Chemistry, Indian Institute of Technology-Guwahati, Kamrup, Assam, 781039, India.,Centre for Nanotechnology, Indian Institute of Technology-Guwahati, Kamrup, Assam, 781039, India
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17
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Minguela J, Müller DW, Mücklich F, Llanes L, Ginebra MP, Roa JJ, Mas-Moruno C. Peptidic biofunctionalization of laser patterned dental zirconia: A biochemical-topographical approach. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2021; 125:112096. [PMID: 33965106 DOI: 10.1016/j.msec.2021.112096] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/27/2021] [Revised: 03/25/2021] [Accepted: 04/08/2021] [Indexed: 02/07/2023]
Abstract
A dual approach employing peptidic biofunctionalization and laser micro-patterns on dental zirconia was explored, with the aim of providing a flexible tool to improve tissue integration of restorations. Direct laser interference patterning with a femtosecond Ti:Sapphire laser was employed, and two periodic grooved patterns were produced with a periodicity of 3 and 10 μm. A platform containing the cell-adhesive RGD and the osteogenic DWIVA peptides was used to functionalize the grooved surfaces. Topography and surface damage were characterized by confocal laser scanning (CLSM), scanning electron and scanning transmission electron microscopy techniques. The surface patterns exhibited a high homogeneity and subsurface damage was found in the form of nano-cracks and nano-pores, at the bottom of the valleys. Accelerated tests in water steam were carried out to assess hydrothermal degradation resistance, which slightly decreased after the laser treatment. Interestingly, the detrimental effects of the laser modification were reverted by a post-laser thermal treatment. The attachment of the molecule was verified trough fluorescence CLSM and X-ray photoelectron spectroscopy. Finally, the biological properties of the surfaces were studied in human mesenchymal stem cells. Cell adhesion, morphology, migration and differentiation were investigated. Cells on grooved surfaces displayed an elongated morphology and aligned along the patterns. On these surfaces, migration was greatly enhanced along the grooves, but also highly restricted in the perpendicular direction as compared to flat specimens. After biofunctionalization, cell number and cell area increased and well-developed cell cytoskeletons were observed. However, no effects on cell migration were found for the peptidic platform. Although some osteogenic potential was found in specimens grooved with a periodicity of 10 μm, the largest effects were observed from the biomolecule, which favored upregulation of several genes related to osteoblastic differentiation in all the surfaces.
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Affiliation(s)
- J Minguela
- Biomaterials, Biomechanics and Tissue Engineering Group (BBT), Department of Materials Science and Engineering, Universitat Politècnica de Catalunya-BarcelonaTECH, 08019 Barcelona, Spain; Center for Structural Integrity, Reliability and Micromechanics of Materials (CIEFMA), Department of Materials Science and Engineering, Universitat Politècnica de Catalunya-BarcelonaTECH, 08019 Barcelona, Spain; Barcelona Research Center in Multiscale Science and Engineering, Universitat Politècnica de Catalunya-BarcelonaTECH, 08019 Barcelona, Spain
| | - D W Müller
- Functional Materials, Department of Materials Science and Engineering, Saarland University, 66123 Saarbruecken, Germany
| | - F Mücklich
- Functional Materials, Department of Materials Science and Engineering, Saarland University, 66123 Saarbruecken, Germany
| | - L Llanes
- Center for Structural Integrity, Reliability and Micromechanics of Materials (CIEFMA), Department of Materials Science and Engineering, Universitat Politècnica de Catalunya-BarcelonaTECH, 08019 Barcelona, Spain; Barcelona Research Center in Multiscale Science and Engineering, Universitat Politècnica de Catalunya-BarcelonaTECH, 08019 Barcelona, Spain
| | - M P Ginebra
- Biomaterials, Biomechanics and Tissue Engineering Group (BBT), Department of Materials Science and Engineering, Universitat Politècnica de Catalunya-BarcelonaTECH, 08019 Barcelona, Spain; Barcelona Research Center in Multiscale Science and Engineering, Universitat Politècnica de Catalunya-BarcelonaTECH, 08019 Barcelona, Spain; Institute for Bioengineering of Catalonia (IBEC), Barcelona Institute of Technology (BIST), 08028 Barcelona, Spain
| | - J J Roa
- Center for Structural Integrity, Reliability and Micromechanics of Materials (CIEFMA), Department of Materials Science and Engineering, Universitat Politècnica de Catalunya-BarcelonaTECH, 08019 Barcelona, Spain; Barcelona Research Center in Multiscale Science and Engineering, Universitat Politècnica de Catalunya-BarcelonaTECH, 08019 Barcelona, Spain
| | - C Mas-Moruno
- Biomaterials, Biomechanics and Tissue Engineering Group (BBT), Department of Materials Science and Engineering, Universitat Politècnica de Catalunya-BarcelonaTECH, 08019 Barcelona, Spain; Barcelona Research Center in Multiscale Science and Engineering, Universitat Politècnica de Catalunya-BarcelonaTECH, 08019 Barcelona, Spain.
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18
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Functionalization Strategies and Fabrication of Solvent-Cast PLLA for Bioresorbable Stents. APPLIED SCIENCES-BASEL 2021. [DOI: 10.3390/app11041478] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Actual polymer bioresorbable stents (BRS) generate a risk of device thrombosis as a consequence of the incomplete endothelialization after stent implantation. The material-tissue interactions are not fully controlled and stent fabrication techniques do not allow personalized medical solutions. This work investigates the effect of different functionalization strategies onto solvent-cast poly(l-lactic acid) (PLLA) surfaces with the capacity to enhance surface endothelial adhesion and the fabrication of 3D printed BRS. PLLA films were obtained by solvent casting and treated thermally to increase mechanical properties. Surface functionalization was performed by oxygen plasma (OP), sodium hydroxide (SH) etching, or cutinase enzyme (ET) hydrolysis, generating hydroxyl and carboxyl groups. A higher amount of carboxyl and hydroxyl groups was determined on OP and ET compared to the SH surfaces, as determined by contact angle and X-ray photoelectron spectroscopy (XPS). Endothelial cells (ECs) adhesion and spreading was higher on OP and ET functionalized surfaces correlated with the increase of functional groups without affecting the degradation. To verify the feasibility of the approach proposed, 3D printed PLLA BRS stents were produced by the solvent-cast direct writing technique.
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19
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Müller DW, Holtsch A, Lößlein S, Pauly C, Spengler C, Grandthyll S, Jacobs K, Mücklich F, Müller F. In-Depth Investigation of Copper Surface Chemistry Modification by Ultrashort Pulsed Direct Laser Interference Patterning. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2020; 36:13415-13425. [PMID: 33141584 DOI: 10.1021/acs.langmuir.0c01625] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Surface patterning in the micro- and nanometer-range by means of pulsed laser interference has repeatedly proven to be a versatile tool for surface functionalization. With these techniques, however, the surface is often changed not only in terms of morphology but also in terms of surface chemistry. In this study, we present an in-depth investigation of the chemical surface modification occurring during surface patterning of copper by ultrashort pulsed direct laser interference patterning (USP-DLIP). A multimethod approach of parallel analysis using visualizing, topography-sensitive, and spectroscopic techniques allowed a detailed quantification of surface morphology as well as composition and distribution of surface chemistry related to both processing and atmospheric aging. The investigations revealed a heterogeneous surface composition separated in peak and valley regions predominantly consisting of Cu2O, as well as superficial agglomerations of CuO and carbon species. The evaluation was supported by a modeling approach for the quantification of XPS results in relation to heterogeneous surface composition, which was observed by means of a combination of different spectroscopic techniques. The overall results provide a detailed understanding of the chemical and topographical surface modification during USP-DLIP, which allows a more targeted use of this technology for surface functionalization.
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Affiliation(s)
- Daniel W Müller
- Chair of Functional Materials, Department of Materials Science, Saarland University, 66123 Saarbrücken, Germany
| | - Anne Holtsch
- Experimental Physics and Center for Biophysics, Saarland University, 66123 Saarbrücken, Germany
| | - Sarah Lößlein
- Chair of Functional Materials, Department of Materials Science, Saarland University, 66123 Saarbrücken, Germany
| | - Christoph Pauly
- Chair of Functional Materials, Department of Materials Science, Saarland University, 66123 Saarbrücken, Germany
| | - Christian Spengler
- Experimental Physics and Center for Biophysics, Saarland University, 66123 Saarbrücken, Germany
| | - Samuel Grandthyll
- Experimental Physics and Center for Biophysics, Saarland University, 66123 Saarbrücken, Germany
| | - Karin Jacobs
- Experimental Physics and Center for Biophysics, Saarland University, 66123 Saarbrücken, Germany
| | - Frank Mücklich
- Chair of Functional Materials, Department of Materials Science, Saarland University, 66123 Saarbrücken, Germany
| | - Frank Müller
- Experimental Physics and Center for Biophysics, Saarland University, 66123 Saarbrücken, Germany
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20
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Liu M, Li MT, Xu S, Yang H, Sun HB. Bioinspired Superhydrophobic Surfaces via Laser-Structuring. Front Chem 2020; 8:835. [PMID: 33195040 PMCID: PMC7596381 DOI: 10.3389/fchem.2020.00835] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2020] [Accepted: 08/10/2020] [Indexed: 01/01/2023] Open
Abstract
Bioinspired superhydrophobic surfaces are an artificial functional surface that mainly extracts morphological designs from natural organisms. In both laboratory research and industry, there is a need to develop ways of giving large-area surfaces water repellence. Currently, surface modification methods are subject to many challenging requirements such as a need for chemical-free treatment or high surface roughness. Laser micro-nanofabrications are a potential way of addressing these challenges, as they involve non-contact processing and outstanding patterning ability. This review briefly discusses multiple laser patterning methods, which could be used for surface structuring toward creating superhydrophobic surfaces.
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Affiliation(s)
- Monan Liu
- Department of Condensed Matter Physics, College of Physics, Jilin University, Changchun, China
| | - Mu-Tian Li
- State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun, China
| | - Shuai Xu
- State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun, China
| | - Han Yang
- State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun, China
| | - Hong-Bo Sun
- State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun, China
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21
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Hagen MW, Hinds MT. The Effects of Topographic Micropatterning on Endothelial Colony-Forming Cells. Tissue Eng Part A 2020; 27:270-281. [PMID: 32600119 DOI: 10.1089/ten.tea.2020.0066] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023] Open
Abstract
Artificial small-diameter vascular grafts remain an unmet need in modern medicine, due to the thrombosis and neointimal hyperplasia that plague currently available synthetic devices. Tissue engineering techniques, including in vitro endothelialization, could offer a solution to this problem. A potential minimally invasive source of patient autologous endothelium is endothelial colony-forming cells (ECFCs), endothelial-like outgrowth products of circulating progenitors. While ECFCs respond to shear stress similar to mature endothelial cells (ECs), their response to luminal topographic micropatterning (TMP), a biomaterial modification with the potential to flow-independently, enhance the attachment, migration, gene expression, and function of mature ECs, remains unstudied. In this study, case-matched carotid endothelial cells (CaECs) and blood-derived ECFCs are statically cultured on polyurethane substrates with micropatterned pitches (pitch = peak to peak distance) ranging from 3-to 14 μm. On all pattern pitches tested, both CaECs and ECFCs showed significant and robust alignment to the angle of the micropatterns. Using a novel cell-by-cell image analysis technique, it was found that actin fibers similarly and significantly aligned to the angle of micropatterned features on all pitches tested. Microtubules analyzed through the same novel approach showed significant alignment on most pitches examined, with a greater variation in fiber angle overall. Interestingly, only CaECs showed significant cellular elongation, and notably to a lower degree than previously seen either in vivo due to flow or in vitro due to spatial growth restriction micropatterning, but consistent with earlier studies of TMP. Neither cell type displayed any significant micropattern-driven changes in the expression of KLF-2 or the downstream adhesion molecules it regulates. These results demonstrate that TMP flow-independently affects ECFC morphology, but that alignment alone is insufficient to drive protective changes in EC and ECFC function.
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Affiliation(s)
- Matthew W Hagen
- Knight Cardiovascular Institute, Oregon Health and Science University, Portland, Oregon, USA.,Work was performed at Oregon Health and Science University, Portland, Oregon, USA
| | - Monica T Hinds
- Department of Biomedical Engineering, Oregon Health and Science University, Portland, Oregon, USA.,Work was performed at Oregon Health and Science University, Portland, Oregon, USA
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22
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Zhao J, Feng Y. Surface Engineering of Cardiovascular Devices for Improved Hemocompatibility and Rapid Endothelialization. Adv Healthc Mater 2020; 9:e2000920. [PMID: 32833323 DOI: 10.1002/adhm.202000920] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2020] [Revised: 07/18/2020] [Indexed: 12/13/2022]
Abstract
Cardiovascular devices have been widely applied in the clinical treatment of cardiovascular diseases. However, poor hemocompatibility and slow endothelialization on their surface still exist. Numerous surface engineering strategies have mainly sought to modify the device surface through physical, chemical, and biological approaches to improve surface hemocompatibility and endothelialization. The alteration of physical characteristics and pattern topographies brings some hopeful outcomes and plays a notable role in this respect. The chemical and biological approaches can provide potential signs of success in the endothelialization of vascular device surfaces. They usually involve therapeutic drugs, specific peptides, adhesive proteins, antibodies, growth factors and nitric oxide (NO) donors. The gene engineering can enhance the proliferation, growth, and migration of vascular cells, thus boosting the endothelialization. In this review, the surface engineering strategies are highlighted and summarized to improve hemocompatibility and rapid endothelialization on the cardiovascular devices. The potential outlook is also briefly discussed to help guide endothelialization strategies and inspire further innovations. It is hoped that this review can assist with the surface engineering of cardiovascular devices and promote future advancements in this emerging research field.
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Affiliation(s)
- Jing Zhao
- School of Chemical Engineering and Technology Tianjin University Yaguan Road 135 Tianjin 300350 P. R. China
| | - Yakai Feng
- School of Chemical Engineering and Technology Tianjin University Yaguan Road 135 Tianjin 300350 P. R. China
- Collaborative Innovation Center of Chemical Science and Chemical Engineering (Tianjin) Yaguan Road 135 Tianjin 300350 P. R. China
- Key Laboratory of Systems Bioengineering (Ministry of Education) Tianjin University Tianjin 300072 P. R. China
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23
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Zheng W, Liu M, Qi H, Wen C, Zhang C, Mi J, Zhou X, Zhang L, Fan D. Mussel-inspired triblock functional protein coating with endothelial cell selectivity for endothelialization. J Colloid Interface Sci 2020; 576:68-78. [DOI: 10.1016/j.jcis.2020.04.116] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2019] [Revised: 04/21/2020] [Accepted: 04/28/2020] [Indexed: 12/19/2022]
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24
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Zhou K, Li Y, Zhang L, Jin L, Yuan F, Tan J, Yuan G, Pei J. Nano-micrometer surface roughness gradients reveal topographical influences on differentiating responses of vascular cells on biodegradable magnesium. Bioact Mater 2020; 6:262-272. [PMID: 32913933 PMCID: PMC7451920 DOI: 10.1016/j.bioactmat.2020.08.004] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2020] [Revised: 08/05/2020] [Accepted: 08/08/2020] [Indexed: 12/12/2022] Open
Abstract
Distinctively directing endothelial cells (ECs) and smooth muscle cells (SMCs), potentially by surface topography cue, is of central importance for enhancing bioefficacy of vascular implants. For the first time, surface gradients with a broad range of nano-micrometer roughness are developed on Mg, a promising next-generation biodegradable metal, to carry out a systematic study on the response of ECs and SMCs. Cell adhesion, spreading, and proliferation are quantified along gradients by high-throughput imaging, illustrating drastic divergence between ECs and SMCs, especially in highly rough regions. The profound role of surface topography overcoming the biochemical cue of released Mg2+ is unraveled at different roughness ranges for ECs and SMCs. Further insights into the underlying regulatory mechanism are gained at subcellular and gene levels. Our work enables high-efficient exploration of optimized surface morphology for modulating favored cell selectivity of promoting ECs and suppressing SMCs, providing a potential strategy to achieve rapid endothelialization for Mg. Surface topography stimuli was engineered on Mg with varying roughness gradients. Ridge/valley network feature on Mg overperforms the influence of Mg2+. Optimized roughness facilitates proliferation of ECs while suppressing SMCs.
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Affiliation(s)
- Ke Zhou
- National Engineering Research Center of Light Alloy Net Forming & State Key Laboratory of Metal Matrix Composite, School of Materials Science & Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, China
| | - Yutong Li
- National Engineering Research Center of Light Alloy Net Forming & State Key Laboratory of Metal Matrix Composite, School of Materials Science & Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, China
| | - Lei Zhang
- National Engineering Research Center of Light Alloy Net Forming & State Key Laboratory of Metal Matrix Composite, School of Materials Science & Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, China
| | - Liang Jin
- National Engineering Research Center of Light Alloy Net Forming & State Key Laboratory of Metal Matrix Composite, School of Materials Science & Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, China
| | - Feng Yuan
- Department of Biomedical Engineering, University of Texas at Austin, TX, 78712, USA
| | - Jinyun Tan
- Department of Vascular Surgery, Huashan Hospital, Fudan University, Shanghai, 200040, China
| | - Guangyin Yuan
- National Engineering Research Center of Light Alloy Net Forming & State Key Laboratory of Metal Matrix Composite, School of Materials Science & Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, China
| | - Jia Pei
- National Engineering Research Center of Light Alloy Net Forming & State Key Laboratory of Metal Matrix Composite, School of Materials Science & Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, China
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Müller DW, Fox T, Grützmacher PG, Suarez S, Mücklich F. Applying Ultrashort Pulsed Direct Laser Interference Patterning for Functional Surfaces. Sci Rep 2020; 10:3647. [PMID: 32108155 PMCID: PMC7046748 DOI: 10.1038/s41598-020-60592-4] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2019] [Accepted: 02/13/2020] [Indexed: 11/09/2022] Open
Abstract
Surface structures in the micro- and nanometre length scale exert a major influence on performance and functionality for many specialized applications in surface engineering. However, they are often limited to certain pattern scales and materials, depending on which processing technique is used. Likewise, the morphology of the topography is in complex relation to the utilized processing methodology. In this study, the generation of hierarchical surface structures in the micro- as well as the sub-micrometre scale was achieved on ceramic, polymer and metallic materials by utilizing Ultrashort Pulsed Direct Laser Interference Patterning (USP-DLIP). The morphologies of the generated patterns where examined in relation to the unique physical interaction of each material with ultrashort pulsed laser irradiation. In this context, the pattern formation on copper, CuZn37 brass and AISI 304 stainless steel was investigated in detail by means of a combination of experiment and simulation to understand the individual thermal interactions involved in USP-DLIP processing. Thereby, the pattern's hierarchical topography could be tailored besides achieving higher process control in the production of patterns in the sub-µm range by USP-DLIP.
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Affiliation(s)
- Daniel Wyn Müller
- Chair of Functional Materials, Department of Materials Science, Saarland University, 66123, Saarbrücken, Germany.
| | - Tobias Fox
- Chair of Functional Materials, Department of Materials Science, Saarland University, 66123, Saarbrücken, Germany
| | - Philipp G Grützmacher
- Chair of Functional Materials, Department of Materials Science, Saarland University, 66123, Saarbrücken, Germany
| | - Sebastian Suarez
- Chair of Functional Materials, Department of Materials Science, Saarland University, 66123, Saarbrücken, Germany
| | - Frank Mücklich
- Chair of Functional Materials, Department of Materials Science, Saarland University, 66123, Saarbrücken, Germany
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26
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Liu W, Zhang G, Wu J, Zhang Y, Liu J, Luo H, Shao L. Insights into the angiogenic effects of nanomaterials: mechanisms involved and potential applications. J Nanobiotechnology 2020; 18:9. [PMID: 31918719 PMCID: PMC6950937 DOI: 10.1186/s12951-019-0570-3] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2019] [Accepted: 12/31/2019] [Indexed: 12/18/2022] Open
Abstract
The vascular system, which transports oxygen and nutrients, plays an important role in wound healing, cardiovascular disease treatment and bone tissue engineering. Angiogenesis is a complex and delicate regulatory process. Vascular cells, the extracellular matrix (ECM) and angiogenic factors are indispensable in the promotion of lumen formation and vascular maturation to support blood flow. However, the addition of growth factors or proteins involved in proangiogenic effects is not effective for regulating angiogenesis in different microenvironments. The construction of biomaterial scaffolds to achieve optimal growth conditions and earlier vascularization is undoubtedly one of the most important considerations and major challenges among engineering strategies. Nanomaterials have attracted much attention in biomedical applications due to their structure and unique photoelectric and catalytic properties. Nanomaterials not only serve as carriers that effectively deliver factors such as angiogenesis-related proteins and mRNA but also simulate the nano-topological structure of the primary ECM of blood vessels and stimulate the gene expression of angiogenic effects facilitating angiogenesis. Therefore, the introduction of nanomaterials to promote angiogenesis is a great helpful to the success of tissue regeneration and some ischaemic diseases. This review focuses on the angiogenic effects of nanoscaffolds in different types of tissue regeneration and discusses the influencing factors as well as possible related mechanisms of nanomaterials in endothelial neovascularization. It contributes novel insights into the design and development of novel nanomaterials for vascularization and therapeutic applications.
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Affiliation(s)
- Wenjing Liu
- Stomatological Hospital, Southern Medical University, Guangzhou, 510280, China
| | - Guilan Zhang
- Stomatological Hospital, Southern Medical University, Guangzhou, 510280, China
| | - Junrong Wu
- Stomatological Hospital, Southern Medical University, Guangzhou, 510280, China
| | - Yanli Zhang
- Stomatological Hospital, Southern Medical University, Guangzhou, 510280, China
| | - Jia Liu
- Stomatological Hospital, Southern Medical University, Guangzhou, 510280, China
| | - Haiyun Luo
- Stomatological Hospital, Southern Medical University, Guangzhou, 510280, China
| | - Longquan Shao
- Stomatological Hospital, Southern Medical University, Guangzhou, 510280, China.
- Guangdong Provincial Key Laboratory of Construction and Detection in Tissue Engineering, Guangzhou, 510515, China.
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Zhu M, Ye H, Fang J, Zhong C, Yao J, Park J, Lu X, Ren F. Engineering High-Resolution Micropatterns Directly onto Titanium with Optimized Contact Guidance to Promote Osteogenic Differentiation and Bone Regeneration. ACS APPLIED MATERIALS & INTERFACES 2019; 11:43888-43901. [PMID: 31680521 DOI: 10.1021/acsami.9b16050] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Topographical cues play an important role in directing cell behavior, and thus, extensive research efforts have been devoted to fabrication of surface patterns and exploring the contact guidance effect. However, engineering high-resolution micropatterns directly onto metallic implants remains a grand challenge. Moreover, there still lacks evidence that allows translation of in vitro screening to in vivo tissue response. Herein, we demonstrate a fast, cost-effective, and feasible approach to the precise fabrication of shape- and size-controlled micropatterns on titanium substrates using a combination of photolithography and inductively coupled plasma-based dry etching. A titanium TopoChip containing 34 microgrooved patterns with varying geometry parameters and a flat surface as the control was designed for a high-throughput in vitro study of the contact guidance of osteoblasts. The correlation between the surface pattern dimensions, cell morphological characteristics, proliferation, and osteogenic marker expression was systematically investigated in vitro. Furthermore, the surface with the highest osteogenic potential in vitro along with representative controls was evaluated in rat cranial defect models. The results show that microgrooved pattern parameters have almost no effect on osteoblast proliferation but significantly regulate the cell morphology, orientation, focal adhesion (FA) formation, and osteogenic differentiation in vitro. In particular, a specific groove pattern with a ridge width of 3 μm, groove width of 7 μm, and depth of 2 μm can most effectively align the cells through regulating the distribution of FAs, resulting in an anisotropic actin cytoskeleton, and thereby promoting osteogenic differentiation. In vivo, microcomputed tomography and histological analyses show that the optimized pattern can apparently stimulate new bone formation. This study not only offers a microfabrication method that can be extended to fabricate various shape- and size-controlled micropatterns on titanium alloys but also provides insight into the surface structure design of orthopedic and dental implants for enhanced bone regeneration.
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Affiliation(s)
| | | | | | - Chuanxin Zhong
- Institute for Advancing Translational Medicine in Bone and Joint Diseases, School of Chinese Medicine , Hong Kong Baptist University , Kowloon Tong , Hong Kong 999077 , China
| | | | | | - Xiong Lu
- Key Lab of Advanced Technologies of Materials, Ministry of Education, School of Materials Science and Engineering , Southwest Jiaotong University , Chengdu , Sichuan 610031, China
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28
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Fabrication of superhydrophobic and ice-repellent surfaces on pure aluminium using single and multiscaled periodic textures. Sci Rep 2019; 9:13944. [PMID: 31558749 PMCID: PMC6763440 DOI: 10.1038/s41598-019-49615-x] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2019] [Accepted: 08/23/2019] [Indexed: 11/15/2022] Open
Abstract
Fabricating aluminium surfaces with superhydrophobic and ice-repellent properties present nowadays a challenging task. In this work, multifunctional structures are manufactured by direct laser writing and direct laser interference patterning methods using pulsed infrared laser radiation (1064 nm). Different periodic patterns with feature sizes ranging from 7.0 to 50.0 µm are produced. In addition, hierarchical textures are produced combining both mentioned laser based methods. Water contact angle tests at room temperature showed that all produced patterns reached the superhydrophobic state after 13 to 16 days. In addition, these experiments were repeated at substrate temperatures from −30 °C to 80 °C allowing to determine three wettability behaviours as a function of the temperature. The patterned surfaces also showed ice-repellent properties characterized by a near three-fold increase in the droplets freezing times compared to the untreated samples. Using finite element simulations, it was found that the main reason behind the ice-prevention is the change in the droplet geometrical shape due to the hydrophobic nature of the treated surfaces. Finally, dynamic tests of droplets imping the treated aluminium surfaces cooled down to −20 °C revealed that only on the hierarchically patterned surface, the droplets were able to bounce off the substrate.
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29
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Caballé-Serrano J, Munar-Frau A, Delgado L, Pérez R, Hernández-Alfaro F. Physicochemical characterization of barrier membranes for bone regeneration. J Mech Behav Biomed Mater 2019; 97:13-20. [PMID: 31085456 DOI: 10.1016/j.jmbbm.2019.04.053] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2019] [Revised: 04/10/2019] [Accepted: 04/27/2019] [Indexed: 11/19/2022]
Abstract
Barrier membranes are essential biomaterials for guided bone regeneration. Due to different origin and structure of barrier membranes, singular mechanical properties and clinical behaviors can be expected. It is important to understand the physic and chemical properties of barrier membranes to select the needed biomaterial for each clinical situation. To date, no study has evaluated and compared the physicochemical properties of various families of barrier membranes. The aim of this study is to evaluate the physicochemical properties of various barrier membranes. Fifteen membranes of different origin were tested in this study. Membranes were divided into biological or synthetic origin and grouped in natural allogenic collagen, natural xenogenic collagen, cross-linked collagen and synthetic membranes. Physicochemical properties were evaluated in terms of tension, stiffness, absorption ability, pH and wettability. For the tension tests, all membranes showed similar low tension and low stiffness, especially after a 4-min hydration, except for bone laminas that showed a greater stiffness particularly in a dry status. Regarding wettability and hydration of the barrier membranes, porcine origin membranes had greater hydration; wettability was also superior in porcine derived barrier membranes and showed a faster absorption of the drop on the rough surfaces. All membranes had a stable pH, having the synthetic membranes the most stable pH when compared to physiologic. The wide variety of barrier membranes opens a debate in which the practitioner should select the adequate barrier membrane for each clinical situation. Different materials show singular potentials depending on their tissue origin making them suitable for specific clinical indications. More studies regarding adsorption, integration and degradation of barrier membranes are needed to understand their behavior.
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Affiliation(s)
- Jordi Caballé-Serrano
- Department of Oral and Maxillofacial Surgery, School of Dental Medicine, Universitat Internacional de Catalunya, Barcelona, Spain; Department of Oral Surgery and Stomatology, School of Dental Medicine, University of Bern, Switzerland; Robert K. Schenk Laboratory of Oral Histology, School of Dental Medicine, University of Bern, Switzerland.
| | - Antonio Munar-Frau
- Department of Oral and Maxillofacial Surgery, School of Dental Medicine, Universitat Internacional de Catalunya, Barcelona, Spain
| | - Luis Delgado
- Bioengineering Institute of Technology, Universitat Internacional de Catalunya, Barcelona, Spain
| | - Roman Pérez
- Bioengineering Institute of Technology, Universitat Internacional de Catalunya, Barcelona, Spain
| | - Federico Hernández-Alfaro
- Department of Oral and Maxillofacial Surgery, School of Dental Medicine, Universitat Internacional de Catalunya, Barcelona, Spain
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Aktas OC, Metzger W, Haidar A, Açil Y, Gülses A, Wiltfang J, Sacramento CM, Nothdurft FP. Enhancing adhesion and alignment of human gingival fibroblasts on dental implants. J Craniomaxillofac Surg 2019; 47:661-667. [PMID: 30846326 DOI: 10.1016/j.jcms.2019.02.004] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2018] [Revised: 01/27/2019] [Accepted: 02/04/2019] [Indexed: 12/29/2022] Open
Abstract
BACKGROUND Promoting the directional attachment of gingiva to the dental implant leads to the formation of tight connective tissue which acts as a seal against the penetration of oral bacteria. Such a directional growth is mostly governed by the surface texture. MATERIAL AND METHODS In this study, three different methods, mechanical structuring, chemical etching and laser treatment, have been explored for their applicability in promoting cellular attachment and alignment of human primary gingival fibroblasts (HGFIBs). RESULTS The effectiveness of mechanical structuring was shown as a simple and a cost-effective method to create patterns to align HGIFIBs. CONCLUSION Combining mechanical structuring with chemical etching enhanced both cellular attachment and the cellular alignment.
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Affiliation(s)
- Oral Cenk Aktas
- Institute for Materials Science, Christian-Albrechts-University Kiel, Germany
| | - Wolfgang Metzger
- Department of Trauma, Hand and Reconstructive Surgery, Saarland University, Homburg, Saar, Germany
| | - Ayman Haidar
- Department of Prosthetic Dentistry and Dental Materials Sciences, Saarland University, Homburg, Saar, Germany
| | - Yahya Açil
- Department of Oral and Maxillofacial Surgery, Christian-Albrecht-Universität zu Kiel, Kiel, Germany
| | - Aydin Gülses
- Department of Oral and Maxillofacial Surgery, Christian-Albrecht-Universität zu Kiel, Kiel, Germany
| | - Jörg Wiltfang
- Department of Oral and Maxillofacial Surgery, Christian-Albrecht-Universität zu Kiel, Kiel, Germany
| | - Catharina Marques Sacramento
- Department of Prosthesis and Periodontology, Division of Periodontics, Piracicaba Dental School, University of Campinas, Piracicaba, Brazil
| | - Frank Philipp Nothdurft
- Department of Prosthetic Dentistry and Dental Materials Sciences, Saarland University, Homburg, Saar, Germany.
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31
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Liu Y, Li L, Chen X, Wang Y, Liu MN, Yan J, Cao L, Wang L, Wang ZB. Atomic force acoustic microscopy reveals the influence of substrate stiffness and topography on cell behavior. BEILSTEIN JOURNAL OF NANOTECHNOLOGY 2019; 10:2329-2337. [PMID: 31886109 PMCID: PMC6902897 DOI: 10.3762/bjnano.10.223] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/15/2019] [Accepted: 10/24/2019] [Indexed: 05/15/2023]
Abstract
The stiffness and the topography of the substrate at the cell-substrate interface are two key properties influencing cell behavior. In this paper, atomic force acoustic microscopy (AFAM) is used to investigate the influence of substrate stiffness and substrate topography on the responses of L929 fibroblasts. This combined nondestructive technique is able to characterize materials at high lateral resolution. To produce substrates of tunable stiffness and topography, we imprint nanostripe patterns on undeveloped and developed SU-8 photoresist films using electron-beam lithography (EBL). Elastic deformations of the substrate surfaces and the cells are revealed by AFAM. Our results show that AFAM is capable of imaging surface elastic deformations. By immunofluorescence experiments, we find that the L929 cells significantly elongate on the patterned stiffness substrate, whereas the elasticity of the pattern has only little effect on the spreading of the L929 cells. The influence of the topography pattern on the cell alignment and morphology is even more pronounced leading to an arrangement of the cells along the nanostripe pattern. Our method is useful for the quantitative characterization of cell-substrate interactions and provides guidance for the tissue regeneration therapy in biomedicine.
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Affiliation(s)
- Yan Liu
- Ministry of Education Key Laboratory for Cross-Scale Micro and Nano Manufacturing, Changchun University of Science and Technology, Changchun 130022, China
- International Research Centre for Nano Handling and Manufacturing of China, Changchun University of Science and Technology, Changchun 130022, China
- Computer Department, Changchun Medical College, Changchun 130031, China
| | - Li Li
- Ministry of Education Key Laboratory for Cross-Scale Micro and Nano Manufacturing, Changchun University of Science and Technology, Changchun 130022, China
- International Research Centre for Nano Handling and Manufacturing of China, Changchun University of Science and Technology, Changchun 130022, China
| | - Xing Chen
- Ministry of Education Key Laboratory for Cross-Scale Micro and Nano Manufacturing, Changchun University of Science and Technology, Changchun 130022, China
- International Research Centre for Nano Handling and Manufacturing of China, Changchun University of Science and Technology, Changchun 130022, China
| | - Ying Wang
- Ministry of Education Key Laboratory for Cross-Scale Micro and Nano Manufacturing, Changchun University of Science and Technology, Changchun 130022, China
- International Research Centre for Nano Handling and Manufacturing of China, Changchun University of Science and Technology, Changchun 130022, China
| | - Meng-Nan Liu
- Ministry of Education Key Laboratory for Cross-Scale Micro and Nano Manufacturing, Changchun University of Science and Technology, Changchun 130022, China
- International Research Centre for Nano Handling and Manufacturing of China, Changchun University of Science and Technology, Changchun 130022, China
| | - Jin Yan
- Ministry of Education Key Laboratory for Cross-Scale Micro and Nano Manufacturing, Changchun University of Science and Technology, Changchun 130022, China
- International Research Centre for Nano Handling and Manufacturing of China, Changchun University of Science and Technology, Changchun 130022, China
| | - Liang Cao
- Ministry of Education Key Laboratory for Cross-Scale Micro and Nano Manufacturing, Changchun University of Science and Technology, Changchun 130022, China
- International Research Centre for Nano Handling and Manufacturing of China, Changchun University of Science and Technology, Changchun 130022, China
| | - Lu Wang
- Ministry of Education Key Laboratory for Cross-Scale Micro and Nano Manufacturing, Changchun University of Science and Technology, Changchun 130022, China
- International Research Centre for Nano Handling and Manufacturing of China, Changchun University of Science and Technology, Changchun 130022, China
| | - Zuo-Bin Wang
- Ministry of Education Key Laboratory for Cross-Scale Micro and Nano Manufacturing, Changchun University of Science and Technology, Changchun 130022, China
- International Research Centre for Nano Handling and Manufacturing of China, Changchun University of Science and Technology, Changchun 130022, China
- JR3CN & IRAC, University of Bedfordshire, Luton LU1 3JU, UK
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