1
|
Krukiewicz K, Contessotto P, Nedjari S, Martino MM, Redenski I, Gabet Y, Speranza G, O'Brien T, Altankov G, Awaja F. Clinical potential of plasma-functionalized graphene oxide ultrathin sheets for bone and blood vessel regeneration: Insights from cellular and animal models. BIOMATERIALS ADVANCES 2024; 161:213867. [PMID: 38669824 DOI: 10.1016/j.bioadv.2024.213867] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/29/2023] [Revised: 04/01/2024] [Accepted: 04/18/2024] [Indexed: 04/28/2024]
Abstract
Graphene and graphene oxide (GO), due to their unique chemical and physical properties, possess biochemical characteristics that can trigger intercellular signals promoting tissue regeneration. Clinical applications of thin GO-derived sheets have inspired the development of various tissue regeneration and repair approaches. In this study, we demonstrate that ultrathin sheets of plasma-functionalized and reduced GO, with the oxygen content ranging from 3.2 % to 22 % and the nitrogen content from 0 % to 8.3 %, retain their essential mechanical and molecular integrity, and exhibit robust potential for regenerating bone tissue and blood vessels across multiple cellular and animal models. Initially, we observed the growth of blood vessels and bone tissue in vitro using these functionalized GO sheets on human adipose-derived mesenchymal stem cells and umbilical vein endothelial cells. Remarkably, our study indicates a 2.5-fold increase in mineralization and two-fold increase in tubule formation even in media lacking osteogenic and angiogenic supplements. Subsequently, we observed the initiation, conduction, and formation of bone and blood vessels in a rat tibial osteotomy model, evident from a marked 4-fold increase in the volume of low radio-opacity bone tissue and a significant elevation in connectivity density, all without the use of stem cells or growth factors. Finally, we validated these findings in a mouse critical-size calvarial defect model (33 % higher healing rate) and a rat skin lesion model (up to 2.5-fold increase in the number of blood vessels, and 35 % increase in blood vessels diameter). This study elucidates the pro-osteogenic and pro-angiogenic properties of both pristine and plasma-treated GO ultrathin films. These properties suggest their significant potential for clinical applications, and as valuable biomaterials for investigating fundamental aspects of bone and blood vessel regeneration.
Collapse
Affiliation(s)
- Katarzyna Krukiewicz
- Department of Physical Chemistry and Technology of Polymers, Silesian University of Technology, Gliwice, Poland; Centre for Organic and Nanohybrid Electronics, Silesian University of Technology, Gliwice, Poland.
| | - Paolo Contessotto
- Department of Molecular Medicine, Università degli Studi di Padova, Padua, Italy.
| | - Salima Nedjari
- Molecular Dynamics at Cell-Biomaterial Interface, Institute for Bioengineering of Catalonia, Barcelona, Spain
| | - Mikaël M Martino
- European Molecular Biology Laboratory Australia, Australian Regenerative Medicine Institute, Monash University, Melbourne, VIC, Australia.
| | - Idan Redenski
- Department of Biomedical Engineering, Technion - Israel Institute of Technology, Haifa 32000, Israel
| | - Yankel Gabet
- Department of Anatomy and Anthropology, Faculty of Medical and Health Sciences, Tel-Aviv University, Tel-Aviv, Israel.
| | | | - Timothy O'Brien
- Centre for Research in Medical Devices, University of Galway, Galway, Ireland.
| | - George Altankov
- ICREA & Institute for Bioengineering of Catalonia, Barcelona, Spain; Medical University Pleven, Bulgaria
| | - Firas Awaja
- Department of Medicine, University of Galway, Galway, Ireland; Engmat Ltd., Clybaun Road, Galway, Ireland.
| |
Collapse
|
2
|
Mahendiran B, Muthusamy S, Janani G, Mandal BB, Rajendran S, Krishnakumar GS. Surface Modification of Decellularized Natural Cellulose Scaffolds with Organosilanes for Bone Tissue Regeneration. ACS Biomater Sci Eng 2022; 8:2000-2015. [PMID: 35452211 DOI: 10.1021/acsbiomaterials.1c01502] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The utility of plant tissues as scaffolding materials has been gaining significant interest in recent years owing to their unique material characteristics that are ideal for tissue regeneration. In this study, the degradation and biocompatibility of natural cellulosic scaffolds derived from Borassus flabellifer (Linn.) (BF) immature endosperm was improved by chemical oxidation and surface functionalization processes. Briefly, thus obtained cellulosic scaffolds were sequentially processed via a detergent exchange decellularization process followed by sodium periodate mediated oxidation and organosilane-based surface modification using amino (NH2)-terminated 3-aminopropyltriethoxysilane (APTES) and methyl (CH3)-terminated octadecyltrichlorosilane (OTS). Post oxidation and surface functionalization, the scaffolds showed improved physiochemical, morphological, and mechanical properties. Especially, the swelling capacity, total porosity, surface area, degradation kinetics, and mechanical behavior of scaffold were significantly higher in modified scaffold groups. The biocompatibility analysis demonstrated excellent cellular adhesion, proliferation and differentiation of osteoblasts with an evident upregulation of mineralization. Subcutaneous implantation of these scaffolds in a rat model demonstrated active angiogenesis, enhanced degradation, and excellent biocompatibility with concomitant deposition of a collagen matrix. Taken together, the native cellulosic scaffolds post chemical oxidation and surface functionalization can exclusively integrate the potential properties of native soft tissue with ameliorated in vitro and in vivo support in bone tissue engineering for nonloading bearing applications.
Collapse
Affiliation(s)
- Balaji Mahendiran
- Department of Biotechnology, Applied Biomaterials Laboratory, PSG Institute of Advanced Studies, Coimbatore-641004, Tamil Nadu, India
| | - Shalini Muthusamy
- Department of Biotechnology, Applied Biomaterials Laboratory, PSG Institute of Advanced Studies, Coimbatore-641004, Tamil Nadu, India
| | - G Janani
- Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati, Guwahati-781039, Assam, India
| | - Biman B Mandal
- Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati, Guwahati-781039, Assam, India.,Centre for Nanotechnology, Indian Institute of Technology Guwahati, Guwahati-781039, Assam, India.,School of Health Science and Technology, Indian Institute of Technology Guwahati, Guwahati-781039, Assam, India
| | - Selvakumar Rajendran
- Department of Nanobiotechnology, Tissue Engineering Laboratory, PSG Institute of Advanced Studies, Coimbatore-641004, Tamil Nadu, India
| | - Gopal Shankar Krishnakumar
- Department of Biotechnology, Applied Biomaterials Laboratory, PSG Institute of Advanced Studies, Coimbatore-641004, Tamil Nadu, India
| |
Collapse
|
3
|
Accelerated Endothelialization of Nanofibrous Scaffolds for Biomimetic Cardiovascular Implants. MATERIALS 2022; 15:ma15062014. [PMID: 35329466 PMCID: PMC8955317 DOI: 10.3390/ma15062014] [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: 02/04/2022] [Revised: 03/03/2022] [Accepted: 03/07/2022] [Indexed: 02/04/2023]
Abstract
Nanofiber nonwovens are highly promising to serve as biomimetic scaffolds for pioneering cardiac implants such as drug-eluting stent systems or heart valve prosthetics. For successful implant integration, rapid and homogeneous endothelialization is of utmost importance as it forms a hemocompatible surface. This study aims at physicochemical and biological evaluation of various electrospun polymer scaffolds, made of FDA approved medical-grade plastics. Human endothelial cells (EA.hy926) were examined for cell attachment, morphology, viability, as well as actin and PECAM 1 expression. The appraisal of the untreated poly-L-lactide (PLLA L210), poly-ε-caprolactone (PCL) and polyamide-6 (PA-6) nonwovens shows that the hydrophilicity (water contact angle > 80°) and surface free energy (<60 mN/m) is mostly insufficient for rapid cell colonization. Therefore, modification of the surface tension of nonpolar polymer scaffolds by plasma energy was initiated, leading to more than 60% increased wettability and improved colonization. Additionally, NH3-plasma surface functionalization resulted in a more physiological localization of cell−cell contact markers, promoting endothelialization on all polymeric surfaces, while fiber diameter remained unaltered. Our data indicates that hydrophobic nonwovens are often insufficient to mimic the native extracellular matrix but also that they can be easily adapted by targeted post-processing steps such as plasma treatment. The results achieved increase the understanding of cell−implant interactions of nanostructured polymer-based biomaterial surfaces in blood contact while also advocating for plasma technology to increase the surface energy of nonpolar biostable, as well as biodegradable polymer scaffolds. Thus, we highlight the potential of plasma-activated electrospun polymer scaffolds for the development of advanced cardiac implants.
Collapse
|
4
|
Mohammadalizadeh Z, Bahremandi-Toloue E, Karbasi S. Recent advances in modification strategies of pre- and post-electrospinning of nanofiber scaffolds in tissue engineering. REACT FUNCT POLYM 2022. [DOI: 10.1016/j.reactfunctpolym.2022.105202] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
5
|
Swar S, Máková V, Stibor I. The Covalent Tethering of Poly(ethylene glycol) to Nylon 6 Surface via N, N'-Disuccinimidyl Carbonate Conjugation: A New Approach in the Fight against Pathogenic Bacteria. Polymers (Basel) 2020; 12:E2181. [PMID: 32987744 PMCID: PMC7598665 DOI: 10.3390/polym12102181] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2020] [Revised: 09/16/2020] [Accepted: 09/22/2020] [Indexed: 12/16/2022] Open
Abstract
Different forms of unmodified and modified Poly(ethylene glycols) (PEGs) are widely used as antifouling and antibacterial agents for biomedical industries and Nylon 6 is one of the polymers used for biomedical textiles. Our recent study focused on an efficient approach to PEG immobilization on a reduced Nylon 6 surface via N,N'-disuccinimidyl carbonate (DSC) conjugation. The conversion of amide functional groups to secondary amines on the Nylon 6 polymer surface was achieved by the reducing agent borane-tetrahydrofuran (BH3-THF) complex, before binding the PEG. Various techniques, including water contact angle and free surface energy measurements, atomic force microscopy, scanning electron microscopy, X-ray photoelectron spectroscopy, and Fourier-transform infrared spectroscopy, were used to confirm the desired surface immobilization. Our findings indicated that PEG may be efficiently tethered to the Nylon 6 surface via DSC, having an enormous future potential for antifouling biomedical materials. The bacterial adhesion performances against S. aureus and P. aeruginosa were examined. In vitro cytocompatibility was successfully tested on pure, reduced, and PEG immobilized samples.
Collapse
Affiliation(s)
| | - Veronika Máková
- Department of Nanochemistry, Institute for Nanomaterials, Advanced Technologies and Innovation, Technical University of Liberec, Studentská 1402/2, 46117 Liberec 1, Czech Republic; (S.S.); (I.S.)
| | | |
Collapse
|
6
|
|
7
|
Taylor MJ, Graham DJ, Gamble LJ. Time-of-flight secondary ion mass spectrometry three-dimensional imaging of surface modifications in poly(caprolactone) scaffold pores. J Biomed Mater Res A 2019; 107:2195-2204. [PMID: 31116499 PMCID: PMC6690353 DOI: 10.1002/jbm.a.36729] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2019] [Revised: 05/14/2019] [Accepted: 05/20/2019] [Indexed: 01/24/2023]
Abstract
Scaffolds composed of synthetic polymers such as poly(caprolactone) (PCL) are widely used for the support and repair of tissues in biomedicine. Pores are common features in scaffolds as they facilitate cell penetration. Various surface modifications can be performed to promote key biological responses to these scaffolds. However, verifying the chemistry of these materials post surface modification is problematic due to the combination of three-dimensional (3D) topography and surface sensitivity. Time-of-flight secondary ion mass spectrometry (ToF-SIMS) is commonly used to correlate surface chemistry with cell response. In this study, 3D imaging mass spectrometry analysis of surface modified synthetic polymer scaffolds is demonstrated using PCL porous scaffold, a pore filling polymer sample preparation, and 3D imaging ToF-SIMS. We apply a simple sample preparation procedure, filling the scaffold pores with a poly(vinyl alcohol)/glycerol mixture to remove topographic influence on image quality. This filling method allows the scaffold (PCL) and filler secondary ions to be reconstructed into a 3D chemical image of the pore. Furthermore, we show that surface modifications in the pores of synthetic polymer scaffolds can be mapped in 3D. Imaging of "dry" and "wet" surface modifications is demonstrated as well as a comparison of surface modifications with relatively strong ToF-SIMS peaks (fluorocarbon films [FC]) and to more biologically relevant surface modification of a protein (bovine serum albumin [BSA]). We demonstrate that surface modifications can be imaged in 3D showing that characteristic secondary ions associated with FC and BSA are associated with C3 F8 plasma treatment and BSA, respectively within the pore.
Collapse
Affiliation(s)
- Michael J Taylor
- NESAC/BIO, Department of Bioengineering, University of Washington, Seattle, Washington
| | - Daniel J Graham
- NESAC/BIO, Department of Bioengineering, University of Washington, Seattle, Washington
| | - Lara J Gamble
- NESAC/BIO, Department of Bioengineering, University of Washington, Seattle, Washington
| |
Collapse
|
8
|
Richbourg NR, Peppas NA, Sikavitsas VI. Tuning the biomimetic behavior of scaffolds for regenerative medicine through surface modifications. J Tissue Eng Regen Med 2019; 13:1275-1293. [PMID: 30946537 PMCID: PMC6715496 DOI: 10.1002/term.2859] [Citation(s) in RCA: 94] [Impact Index Per Article: 18.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2018] [Revised: 01/22/2019] [Accepted: 01/29/2019] [Indexed: 11/11/2022]
Abstract
Tissue engineering and regenerative medicine rely extensively on biomaterial scaffolds to support cell adhesion, proliferation, and differentiation physically and chemically in vitro and in vivo. Changes to the surface characteristics of the scaffolds have the greatest impact on cell response. Here, we discuss five dominant surface modification approaches used to biomimetically improve the most common scaffolds for tissue engineering, those based on aliphatic polyesters. Scaffolds of aliphatic polyesters such as poly(l-lactic acid), poly(l-lactic-co-glycolic acid), and poly(ε-caprolactone) are often used in tissue engineering because they provide desirable, tunable properties such as ease of manufacturing, good mechanical properties, and nontoxic degradation products. However, cell-surface interactions necessary for tissue engineering are limited on these materials by their smooth postfabrication surfaces, hydrophobicity, and lack of recognizable biochemical binding sites. The surface modification techniques that have been developed for synthetic polymer scaffolds reduce initial barriers to cell adhesion, proliferation, and differentiation. Topographical modification, protein adsorption, mineral coating, functional group incorporation, and biomacromolecule immobilization each contribute through varying mechanisms to improving cell interactions with aliphatic polyester scaffolds. Furthermore, rational combination of methods from these categories can provide nuanced, specific environments for targeted tissue development.
Collapse
Affiliation(s)
- Nathan R Richbourg
- School of Chemical, Biological, and Materials Engineering, The University of Oklahoma, Norman, OK, USA
- Department of Biomedical Engineering, The University of Texas at Austin, Austin, TX, USA
| | - Nicholas A Peppas
- Department of Biomedical Engineering, The University of Texas at Austin, Austin, TX, USA
- McKetta Department of Chemical Engineering, The University of Texas at Austin, Austin, TX, USA
| | - Vassilios I Sikavitsas
- School of Chemical, Biological, and Materials Engineering, The University of Oklahoma, Norman, OK, USA
| |
Collapse
|
9
|
Nazeer MA, Yilgor E, Yilgor I. Electrospun polycaprolactone/silk fibroin nanofibrous bioactive scaffolds for tissue engineering applications. POLYMER 2019. [DOI: 10.1016/j.polymer.2019.02.023] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
|
10
|
Saeed WS, Al-Odayni AB, Ali Alghamdi A, Abdulaziz Al-Owais A, Semlali A, Aouak T. Miscibility of Poly(Ethylene-co-Vinylalcohol)/Poly(δ-Valerolactone) Blend and Tissue Engineering Scaffold Fabrication Using Naphthalene as Porogen. POLYM-PLAST TECH MAT 2018. [DOI: 10.1080/03602559.2018.1466176] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
Affiliation(s)
- Waseem Sharaf Saeed
- Chemistry Department, College of Science, King Saud University, Riyadh, Saudi Arabia
| | - Abdel-Basit Al-Odayni
- Chemistry Department, College of Science, King Saud University, Riyadh, Saudi Arabia
| | | | | | - Abdelhabib Semlali
- Biochemistry Department, College of Science, King Saud University, Riyadh, Saudi Arabia
| | - Taieb Aouak
- Chemistry Department, College of Science, King Saud University, Riyadh, Saudi Arabia
| |
Collapse
|
11
|
Novel approach for a PTX/VEGF dual drug delivery system in cardiovascular applications—an innovative bulk and surface drug immobilization. Drug Deliv Transl Res 2018. [DOI: 10.1007/s13346-018-0507-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
|
12
|
Grau M, Matena J, Teske M, Petersen S, Aliuos P, Roland L, Grabow N, Murua Escobar H, Gellrich NC, Haferkamp H, Nolte I. In Vitro Evaluation of PCL and P(3HB) as Coating Materials for Selective Laser Melted Porous Titanium Implants. MATERIALS 2017; 10:ma10121344. [PMID: 29168794 PMCID: PMC5744279 DOI: 10.3390/ma10121344] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/14/2017] [Revised: 11/01/2017] [Accepted: 11/20/2017] [Indexed: 11/16/2022]
Abstract
Titanium is widely used as a bone implant material due to its biocompatibility and high resilience. Since its Young’s modulus differs from bone tissue, the resulting “stress shielding” could lead to scaffold loosening. However, by using a scaffold-shaped geometry, the Young’s modulus can be adjusted. Also, a porous geometry enables vascularisation and bone ingrowth inside the implant itself. Additionally, growth factors can improve these effects. In order to create a deposit and release system for these factors, the titanium scaffolds could be coated with degradable polymers. Therefore, in the present study, synthetic poly-ε-caprolactone (PCL) and the biopolymer poly(3-hydroxybutyrate) (P(3HB)) were tested for coating efficiency, cell adhesion, and biocompatibility to find a suitable coating material. The underlying scaffold was created from titanium by Selective Laser Melting (SLM) and coated with PCL or P(3HB) via dip coating. To test the biocompatibility, Live Cell Imaging (LCI) as well as vitality and proliferation assays were performed. In addition, cell adhesion forces were detected via Single Cell Force Spectroscopy, while the coating efficiency was observed using environmental scanning electron microscopy (ESEM) and energy-dispersive X-ray (EDX) analyses. Regarding the coating efficiency, PCL showed higher values in comparison to P(3HB). Vitality assays revealed decent vitality values for both polymers, while values for PCL were significantly lower than those for blank titanium. No significant differences could be observed between PCL and P(3HB) in proliferation and cell adhesion studies. Although LCI observations revealed decreasing values in cell number and populated area over time on both polymer-coated scaffolds, these outcomes could be explained by the possibility of coating diluent residues accumulating in the culture medium. Overall, both polymers fulfill the requirements regarding biocompatibility. Nonetheless, since only PCL coating ensured the maintenance of the porous implant structure, it is preferable to be used as a coating material for creating a deposit and release system for growth factors.
Collapse
Affiliation(s)
- Michael Grau
- Small Animal Clinic, University of Veterinary Medicine Hannover, Foundation, D-30559 Hannover, Germany.
- Division of Medicine Clinic III, Hematology, Oncology and Palliative Medicine, University of Rostock, D-18057 Rostock, Germany.
| | - Julia Matena
- Small Animal Clinic, University of Veterinary Medicine Hannover, Foundation, D-30559 Hannover, Germany.
- Division of Medicine Clinic III, Hematology, Oncology and Palliative Medicine, University of Rostock, D-18057 Rostock, Germany.
| | - Michael Teske
- Institute for Biomedical Engineering, Rostock University Medical Center, D-18119 Rostock, Germany.
| | - Svea Petersen
- Faculty of Engineering and Computer Science, University of Applied Sciences, D-49076 Osnabrueck, Germany.
| | - Pooyan Aliuos
- Department of Otorhinolaryngology, Head and Neck Surgery, Hannover Medical School, D-30625 Hannover, Germany.
| | - Laura Roland
- Small Animal Clinic, University of Veterinary Medicine Hannover, Foundation, D-30559 Hannover, Germany.
- Division of Medicine Clinic III, Hematology, Oncology and Palliative Medicine, University of Rostock, D-18057 Rostock, Germany.
| | - Niels Grabow
- Institute for Biomedical Engineering, Rostock University Medical Center, D-18119 Rostock, Germany.
| | - Hugo Murua Escobar
- Small Animal Clinic, University of Veterinary Medicine Hannover, Foundation, D-30559 Hannover, Germany.
- Division of Medicine Clinic III, Hematology, Oncology and Palliative Medicine, University of Rostock, D-18057 Rostock, Germany.
| | - Nils-Claudius Gellrich
- Clinic for Cranio-Maxillo-Facial Surgery, Hannover Medical School, D-30625 Hannover, Germany.
| | - Heinz Haferkamp
- Institut fuer Werkstoffkunde, Leibniz Universitaet Hannover, D-30823 Garbsen, Germany.
| | - Ingo Nolte
- Small Animal Clinic, University of Veterinary Medicine Hannover, Foundation, D-30559 Hannover, Germany.
| |
Collapse
|
13
|
Wulf K, Tschierschky U, Eickner T, Grabow N, Mundkowski RG. Studies on the interaction of polylactid-based planar and nanoparticular biomaterials with serum albumin and fibrinogen. Colloids Surf B Biointerfaces 2017; 159:1-6. [DOI: 10.1016/j.colsurfb.2017.07.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2017] [Revised: 06/30/2017] [Accepted: 07/01/2017] [Indexed: 10/19/2022]
|
14
|
Li Q, Mu L, Zhang F, Mo Z, Jin C, Qi W. Manufacture and property research of heparin grafted electrospinning PCU artificial vascular scaffolds. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2017; 78:854-861. [PMID: 28576059 DOI: 10.1016/j.msec.2017.04.148] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/22/2016] [Revised: 02/27/2017] [Accepted: 04/23/2017] [Indexed: 10/19/2022]
Abstract
PCU (polycarbonate polyurethane) is supposed to be an ideal elastomer for manufacturing artificial vessel scaffold with perfect mechanical strength and biocompatibility. Surface grafting by heparin sodium can increase its anticoagulant hemorrhagic, achieving a better application in artificial vessels. Artificial vessels were preliminarily prepared by electrostatic spinning, treated by NH3 plasma and cross-linked with the anticoagulant heparin sodium chemically. Performances of the PCU-Hep (heparin sodium grafted purethane artificial vessels) artificial vessel were calculated through the physical and chemical property tests, evaluation of blood and biocompatibility. Results manifested that heparin sodium was successfully grafted to the vascular surface, porosity, pore diameter and water permeability of the vascular prosthesis fitted the requirements of artificial vessels, the blood test results demonstrated that the vascular material had a low hemolysis, in vitro cytotoxicity experiment and animal experiments proved an excellent biocompatibility. Thus the heparin sodium grafted electrospinning vessels could reduce intravascular thrombus and had potential clinical application.
Collapse
Affiliation(s)
- Qing Li
- Qingdao Chunghao Tissue Engineering Co., Ltd., Qingdao 266003, Shangdong Province, China
| | - Lanlan Mu
- Qingdao Chunghao Tissue Engineering Co., Ltd., Qingdao 266003, Shangdong Province, China.
| | - Fenghua Zhang
- Qingdao Chunghao Tissue Engineering Co., Ltd., Qingdao 266003, Shangdong Province, China
| | - Zhichao Mo
- Qingdao Chunghao Tissue Engineering Co., Ltd., Qingdao 266003, Shangdong Province, China
| | - Chuanyu Jin
- Qingdao Chunghao Tissue Engineering Co., Ltd., Qingdao 266003, Shangdong Province, China
| | - Weiguo Qi
- The medical school affiliated hospital of Qingdao University, Qingdao 266003, Shangdong Province, China
| |
Collapse
|
15
|
Matschegewski C, Matthies JB, Grabow N, Schmitz KP. Cell adhesion and viability of human endothelial cells on electrospun polymer scaffolds. CURRENT DIRECTIONS IN BIOMEDICAL ENGINEERING 2016. [DOI: 10.1515/cdbme-2016-0006] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
AbstractThe usage of electrospun polymer scaffolds is a promising approach for artificial heart valve design. This study aims at the evaluation of biological performance of nanofibrous polymer scaffolds poly(L-lactide) PLLA L210, PLLA L214 and polyamide-6 fabricated by electrospinning via analyzing viability, adhesion and morphology of human umbilical vein endothelial cells (EA.hy926). Nanofibrous surface topography was shown to influence cell phenotype and cell viability according to the observation of diminished cell spreading accompanied with reduced cell viability on nonwovens. Among those, highest biocompatibility was assessed for PLLA L214, although being generally low when compared to the planar control surface. Electrospinning was demonstrated as an innovative technique for the fabrication of advanced biomaterials aiming at guided cellular behavior as well as the design of novel implant platforms. A better understanding of cell–biomaterial interactions is desired to further improve implant development.
Collapse
Affiliation(s)
- Claudia Matschegewski
- 1Institute for ImplantTechnology and Biomaterials e.V. and Institute for Biomedical Engineering, Rostock University Medical Center, Rostock-Warnemünde, Germany
| | - Jörn-Bo Matthies
- 2Institute for Biomedical Engineering, Rostock University Medical Center, Rostock-Warnemünde, Germany
| | - Niels Grabow
- 2Institute for Biomedical Engineering, Rostock University Medical Center, Rostock-Warnemünde, Germany
| | - Klaus-Peter Schmitz
- 1Institute for ImplantTechnology and Biomaterials e.V. and Institute for Biomedical Engineering, Rostock University Medical Center, Rostock-Warnemünde, Germany
| |
Collapse
|
16
|
Spadoni Andreani E, Magagnin L, Secundo F. Preparation and Comparison of Hydrolase-Coated Plastics. ChemistrySelect 2016. [DOI: 10.1002/slct.201600377] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Eugenio Spadoni Andreani
- Istituto di Chimica del Riconoscimento Molecolare; Consiglio Nazionale delle Ricerche; via Mario Bianco 9 20131 Milan Italy
| | - Luca Magagnin
- Dipartimento di Chimica; Materiali e Ing. Chimica G. Natta - Politecnico di Milano; via Mancinelli 7 20131 Milano Italy
| | - Francesco Secundo
- Istituto di Chimica del Riconoscimento Molecolare; Consiglio Nazionale delle Ricerche; via Mario Bianco 9 20131 Milan Italy
| |
Collapse
|
17
|
Abstract
We have investigated the influence of various plasma treatments of electrospun polycaprolactone (PCL) scaffolds on the adhesion and proliferation of human umbilical endothelial cells (HUVEC). The PCL scaffolds were treated in plasmas created in O2, NH3or SO2gas at identical conditions. Surface functionalization of plasma-treated samples was determined using X-ray photoelectron spectroscopy. Cell adhesion and morphology were investigated by scanning electron microscopy and the influence of plasma treatment on cell adhesion and viability was evaluated with cell viability assay (MTT assay). The results showed the highest metabolic activity of HUVEC on PCL samples treated with O2and NH3plasma. Accordingly, the cells reflected the best adhesion and morphology on O2and NH3plasma-treated PCL samples already at 3 h. Moreover, treatment with O2and NH3plasma even stimulated endothelial cell proliferation on PCL surfaces by 60% as measured at 24 h, showing significant improvement in endothelialization of this material. Contrarily, SO2plasma appeared to be less promising in comparison with O2and NH3plasma; however, it was still better than without any plasma treatment. Thus, our results importantly contribute to the biocompatibility improvement of the PCL polymer, commonly used for scaffolds in tissue engineering.
Collapse
|
18
|
Poly-ε-caprolactone Coated and Functionalized Porous Titanium and Magnesium Implants for Enhancing Angiogenesis in Critically Sized Bone Defects. Int J Mol Sci 2015; 17:ijms17010001. [PMID: 26703586 PMCID: PMC4730248 DOI: 10.3390/ijms17010001] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2015] [Revised: 12/10/2015] [Accepted: 12/14/2015] [Indexed: 11/26/2022] Open
Abstract
For healing of critically sized bone defects, biocompatible and angiogenesis supporting implants are favorable. Murine osteoblasts showed equal proliferation behavior on the polymers poly-ε-caprolactone (PCL) and poly-(3-hydroxybutyrate)/poly-(4-hydroxybutyrate) (P(3HB)/P(4HB)). As vitality was significantly better for PCL, it was chosen as a suitable coating material for further experiments. Titanium implants with 600 µm pore size were evaluated and found to be a good implant material for bone, as primary osteoblasts showed a vitality and proliferation onto the implants comparable to well bottom (WB). Pure porous titanium implants and PCL coated porous titanium implants were compared using Live Cell Imaging (LCI) with Green fluorescent protein (GFP)-osteoblasts. Cell count and cell covered area did not differ between the implants after seven days. To improve ingrowth of blood vessels into porous implants, proangiogenic factors like Vascular Endothelial Growth Factor (VEGF) and High Mobility Group Box 1 (HMGB1) were incorporated into PCL coated, porous titanium and magnesium implants. An angiogenesis assay was performed to establish an in vitro method for evaluating the impact of metallic implants on angiogenesis to reduce and refine animal experiments in future. Incorporated concentrations of proangiogenic factors were probably too low, as they did not lead to any effect. Magnesium implants did not yield evaluable results, as they led to pH increase and subsequent cell death.
Collapse
|
19
|
Comparison of Selective Laser Melted Titanium and Magnesium Implants Coated with PCL. Int J Mol Sci 2015; 16:13287-301. [PMID: 26068455 PMCID: PMC4490495 DOI: 10.3390/ijms160613287] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2015] [Accepted: 06/02/2015] [Indexed: 12/17/2022] Open
Abstract
Degradable implant material for bone remodeling that corresponds to the physiological stability of bone has still not been developed. Promising degradable materials with good mechanical properties are magnesium and magnesium alloys. However, excessive gas production due to corrosion can lower the biocompatibility. In the present study we used the polymer coating polycaprolactone (PCL), intended to lower the corrosion rate of magnesium. Additionally, improvement of implant geometry can increase bone remodeling. Porous structures are known to support vessel ingrowth and thus increase osseointegration. With the selective laser melting (SLM) process, defined open porous structures can be created. Recently, highly reactive magnesium has also been processed by SLM. We performed studies with a flat magnesium layer and with porous magnesium implants coated with polymers. The SLM produced magnesium was compared with the titanium alloy TiAl6V4, as titanium is already established for the SLM-process. For testing the biocompatibility, we used primary murine osteoblasts. Results showed a reduced corrosion rate and good biocompatibility of the SLM produced magnesium with PCL coating.
Collapse
|
20
|
SLM produced porous titanium implant improvements for enhanced vascularization and osteoblast seeding. Int J Mol Sci 2015; 16:7478-92. [PMID: 25849656 PMCID: PMC4425029 DOI: 10.3390/ijms16047478] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2015] [Revised: 03/20/2015] [Accepted: 03/30/2015] [Indexed: 01/06/2023] Open
Abstract
To improve well-known titanium implants, pores can be used for increasing bone formation and close bone-implant interface. Selective Laser Melting (SLM) enables the production of any geometry and was used for implant production with 250-µm pore size. The used pore size supports vessel ingrowth, as bone formation is strongly dependent on fast vascularization. Additionally, proangiogenic factors promote implant vascularization. To functionalize the titanium with proangiogenic factors, polycaprolactone (PCL) coating can be used. The following proangiogenic factors were examined: vascular endothelial growth factor (VEGF), high mobility group box 1 (HMGB1) and chemokine (C-X-C motif) ligand 12 (CXCL12). As different surfaces lead to different cell reactions, titanium and PCL coating were compared. The growing into the porous titanium structure of primary osteoblasts was examined by cross sections. Primary osteoblasts seeded on the different surfaces were compared using Live Cell Imaging (LCI). Cross sections showed cells had proliferated, but not migrated after seven days. Although the cell count was lower on titanium PCL implants in LCI, the cell count and cell spreading area development showed promising results for titanium PCL implants. HMGB1 showed the highest migration capacity for stimulating the endothelial cell line. Future perspective would be the incorporation of HMGB1 into PCL polymer for the realization of a slow factor release.
Collapse
|
21
|
Melchiorri AJ, Hibino N, Yi T, Lee YU, Sugiura T, Tara S, Shinoka T, Breuer C, Fisher JP. Contrasting biofunctionalization strategies for the enhanced endothelialization of biodegradable vascular grafts. Biomacromolecules 2015; 16:437-46. [PMID: 25545620 PMCID: PMC4325601 DOI: 10.1021/bm501853s] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2014] [Indexed: 01/26/2023]
Abstract
Surface modification of biodegradable vascular grafts is an important strategy to improve the in situ endothelialization of tissue engineered vascular grafts (TEVGs) and prevent major complications associated with current synthetic grafts. Important strategies for improving endothelialization include increasing endothelial cell mobilization and increased endothelial cell capture through biofunctionalization of TEVGs. The objective of this study was to assess two biofunctionalization strategies for improving endothelialization of biodegradable polyester vascular grafts. These techniques consisted of cross-linking heparin to graft surfaces to immobilize vascular endothelial growth factor (VEGF) or antibodies against CD34 (anti-CD34Ab). To this end, heparin, VEGF, and anti-CD34Ab attachment and quantification assays confirmed the efficacy of the modification strategy. Cell attachment and proliferation on these groups were compared to unmodified grafts in vitro and in vivo. To assess in vivo graft functionality, the grafts were implanted as inferior vena cava interpositional conduits in mice. Modified vascular grafts displayed increased endothelial cell attachment and activity in vivo, according to microscopy techniques, histological results, and eNOS expression. Inner lumen diameter of the modified grafts was also better maintained than controls. Overall, while both functionalized grafts outperformed the unmodified control, grafts modified with anti-CD34Ab appeared to yield the most improved results compared to VEGF-loaded grafts.
Collapse
Affiliation(s)
- A. J. Melchiorri
- Fischell
Department of Bioengineering, University
of Maryland, College Park, Maryland 20742, United States
| | - N. Hibino
- Tissue Engineering Program
and Surgical Research and Department of Cardiothoracic Surgery, Nationwide Children’s Hospital, Columbus, Ohio 43205, United States
| | - T. Yi
- Tissue Engineering Program
and Surgical Research and Department of Cardiothoracic Surgery, Nationwide Children’s Hospital, Columbus, Ohio 43205, United States
| | - Y. U. Lee
- Tissue Engineering Program
and Surgical Research and Department of Cardiothoracic Surgery, Nationwide Children’s Hospital, Columbus, Ohio 43205, United States
| | - T. Sugiura
- Tissue Engineering Program
and Surgical Research and Department of Cardiothoracic Surgery, Nationwide Children’s Hospital, Columbus, Ohio 43205, United States
| | - S. Tara
- Tissue Engineering Program
and Surgical Research and Department of Cardiothoracic Surgery, Nationwide Children’s Hospital, Columbus, Ohio 43205, United States
| | - T. Shinoka
- Tissue Engineering Program
and Surgical Research and Department of Cardiothoracic Surgery, Nationwide Children’s Hospital, Columbus, Ohio 43205, United States
| | - C. Breuer
- Tissue Engineering Program
and Surgical Research and Department of Cardiothoracic Surgery, Nationwide Children’s Hospital, Columbus, Ohio 43205, United States
| | - J. P. Fisher
- Fischell
Department of Bioengineering, University
of Maryland, College Park, Maryland 20742, United States
| |
Collapse
|
22
|
Goh ET, Wong E, Farhatnia Y, Tan A, Seifalian AM. Accelerating in situ endothelialisation of cardiovascular bypass grafts. Int J Mol Sci 2014; 16:597-627. [PMID: 25551605 PMCID: PMC4307264 DOI: 10.3390/ijms16010597] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2014] [Accepted: 12/19/2014] [Indexed: 12/18/2022] Open
Abstract
The patency of synthetic cardiovascular grafts in the long run is synonymous with their ability to inhibit the processes of intimal hyperplasia, thrombosis and calcification. In the human body, the endothelium of blood vessels exhibits characteristics that inhibit such processes. As such it is not surprising that research in tissue engineering is directed towards replicating the functionality of the natural endothelium in cardiovascular grafts. This can be done either by seeding the endothelium within the lumen of the grafts prior to implantation or by designing the graft such that in situ endothelialisation takes place after implantation. Due to certain difficulties identified with in vitro endothelialisation, in situ endothelialisation, which will be the focus of this article, has garnered interest in the last years. To promote in situ endothelialisation, the following aspects can be taken into account: (1) Endothelial progenital cell mobilization, adhesion and proliferation; (2) Regulating differentiation of progenitor cells to mature endothelium; (3) Preventing thrombogenesis and inflammation during endothelialisation. This article aims to review and compile recent developments to promote the in situ endothelialisation of cardiovascular grafts and subsequently improve their patency, which can also have widespread implications in the field of tissue engineering.
Collapse
Affiliation(s)
- Ee Teng Goh
- Centre for Nanotechnology & Regenerative Medicine, Research Department of Nanotechnology, UCL Division of Surgery & Interventional Science, University College London (UCL), London NW3 2QG, UK.
| | - Eleanor Wong
- Centre for Nanotechnology & Regenerative Medicine, Research Department of Nanotechnology, UCL Division of Surgery & Interventional Science, University College London (UCL), London NW3 2QG, UK.
| | - Yasmin Farhatnia
- Centre for Nanotechnology & Regenerative Medicine, Research Department of Nanotechnology, UCL Division of Surgery & Interventional Science, University College London (UCL), London NW3 2QG, UK.
| | - Aaron Tan
- Centre for Nanotechnology & Regenerative Medicine, Research Department of Nanotechnology, UCL Division of Surgery & Interventional Science, University College London (UCL), London NW3 2QG, UK.
| | - Alexander M Seifalian
- Centre for Nanotechnology & Regenerative Medicine, Research Department of Nanotechnology, UCL Division of Surgery & Interventional Science, University College London (UCL), London NW3 2QG, UK.
| |
Collapse
|
23
|
Bigalke C, Luderer F, Wulf K, Storm T, Löbler M, Arbeiter D, Rau BM, Nizze H, Vollmar B, Schmitz KP, Klar E, Sternberg K. VEGF-releasing suture material for enhancement of vascularization: development, in vitro and in vivo study. Acta Biomater 2014; 10:5081-5089. [PMID: 25204522 DOI: 10.1016/j.actbio.2014.09.002] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2014] [Revised: 07/10/2014] [Accepted: 09/01/2014] [Indexed: 12/18/2022]
Abstract
As it has been demonstrated that bioactive substances can be delivered locally using coated surgical suture materials, the authors developed a vascular endothelial growth factor (VEGF)-releasing suture material that should promote vascularization and potentially wound healing. In this context, the study focused on the characterization of the developed suture material and the verification of its biological activity, as well as establishing a coating process that allows reproducible and stable coating of a commercially available polydioxanone suture material with poly(l-lactide) (PLLA) and 0.1μg and 1.0μg VEGF. The in vitro VEGF release kinetics was studied using a Sandwich ELISA. The biological activity of the released VEGF was investigated in vitro using human umbilical vein endothelial cells. The potential of the VEGF-releasing suture material was also studied in vivo 5days after implantation in the hind limb of Wistar rats, when the histological findings were analyzed. The essential results, enhanced cell viability in vitro as well as significantly increased vascularization in vivo, were achieved using PLLA/1.0μg VEGF-coated suture material. Furthermore, ELISA measurements revealed a high reproducibility of the VEGF release behavior. Based on the results achieved regarding the dose-effect relationship of VEGF, the stability during its processing and the release behavior, it can be predicted that a bioactive suture material would be successful in later in vivo studies. Therefore, this knowledge could be the basis for future studies, where bioactive substances with different modes of action are combined for targeted, overall enhancement of wound healing.
Collapse
Affiliation(s)
- Christian Bigalke
- Department of General, Thoracic, Vascular and Transplantation Surgery, University of Rostock, Schillingallee 35, D-18057 Rostock, Germany.
| | - Frank Luderer
- Institute for Biomedical Engineering, University of Rostock, Friedrich-Barnewitz-Str. 4, D-18119 Rostock, Germany
| | - Katharina Wulf
- Institute for Biomedical Engineering, University of Rostock, Friedrich-Barnewitz-Str. 4, D-18119 Rostock, Germany
| | - Thilo Storm
- Institute for Biomedical Engineering, University of Rostock, Friedrich-Barnewitz-Str. 4, D-18119 Rostock, Germany
| | - Marian Löbler
- Institute for Biomedical Engineering, University of Rostock, Friedrich-Barnewitz-Str. 4, D-18119 Rostock, Germany
| | - Daniela Arbeiter
- Institute for Biomedical Engineering, University of Rostock, Friedrich-Barnewitz-Str. 4, D-18119 Rostock, Germany
| | - Bettina M Rau
- Department of General, Thoracic, Vascular and Transplantation Surgery, University of Rostock, Schillingallee 35, D-18057 Rostock, Germany
| | - Horst Nizze
- Institute for Biomedical Engineering, University of Rostock, Friedrich-Barnewitz-Str. 4, D-18119 Rostock, Germany; Institute of Pathology, University of Rostock, Strempelstr. 14, D-18055 Rostock, Germany
| | - Brigitte Vollmar
- Institute for Experimental Surgery, University of Rostock, Schillingallee 69a, D-18057 Rostock, Germany
| | - Klaus-Peter Schmitz
- Institute for Biomedical Engineering, University of Rostock, Friedrich-Barnewitz-Str. 4, D-18119 Rostock, Germany
| | - Ernst Klar
- Department of General, Thoracic, Vascular and Transplantation Surgery, University of Rostock, Schillingallee 35, D-18057 Rostock, Germany
| | - Katrin Sternberg
- Institute for Biomedical Engineering, University of Rostock, Friedrich-Barnewitz-Str. 4, D-18119 Rostock, Germany
| |
Collapse
|
24
|
Covalent immobilisation of VEGF on plasma-coated electrospun scaffolds for tissue engineering applications. Colloids Surf B Biointerfaces 2014; 123:724-33. [DOI: 10.1016/j.colsurfb.2014.10.016] [Citation(s) in RCA: 62] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2014] [Revised: 09/22/2014] [Accepted: 10/08/2014] [Indexed: 01/01/2023]
|
25
|
Storm T, Wulf K, Teske M, Löbler M, Kundt G, Luderer F, Schmitz KP, Sternberg K, Hovakimyan M. Chemical activation and changes in surface morphology of poly(ε-caprolactone) modulate VEGF responsiveness of human endothelial cells. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2014; 25:2003-2015. [PMID: 24811954 DOI: 10.1007/s10856-014-5226-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/20/2014] [Accepted: 04/21/2014] [Indexed: 06/03/2023]
Abstract
The high degree of clinical routine in percutaneous transluminal coronary angioplasty (PTCA) with and without stenting has not changed the fact that a large number of coronary heart disease patients are still affected by post-operative complications such as restenosis and thrombosis. Because re-endothelialization is the crucial aspect of wound healing after cardiovascular implant surgery, there is a need for modern biomaterials to aid endothelial cells in their adhesion and functional recovery post-stenting. This study systematically examines the potential of numerous chemical polymer modifications with regard to endothelialization. Poly(ε-caprolactone) (PCL) and its chemically activated forms are investigated in detail, as well as the impact of polymer surface morphology and precoating with matrix protein. Human umbilical vein endothelial cells (HUVECs) are used to characterize endothelial cell responses in terms of in vitro viability and adhesion. As a potential component in drug eluting implants, VEGF is applied as stimulus to boost endothelial cell proliferation on the polymer. In conclusion, plasma chemical activation of PCL combined with VEGF stimulation best enhances in vitro endothelialization. Examining the impact of morphological, chemical and biological modifications of PCL, this study makes an important new contribution towards the existing body of work on polymer endothelialization.
Collapse
Affiliation(s)
- Thilo Storm
- Institute for Biomedical Engineering, Rostock University Medical Center, Friedrich-Barnewitz-Str. 4, 18119, Rostock, Germany,
| | | | | | | | | | | | | | | | | |
Collapse
|
26
|
Smooth muscle cell functionality on collagen immobilized polycaprolactone nanowire surfaces. J Funct Biomater 2014; 5:58-77. [PMID: 24956440 PMCID: PMC4099974 DOI: 10.3390/jfb5020058] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2014] [Revised: 04/23/2014] [Accepted: 04/29/2014] [Indexed: 11/21/2022] Open
Abstract
Inhibition of smooth muscle cell (SMC) proliferation and preservation of a differentiated state are important aspects in the management, avoidance and progression of vascular diseases. An understanding of the interaction between SMCs and the biomaterial involved is essential for a successful implant. In this study, we have developed collagen immobilized nanostructured surfaces with controlled arrays of high aspect ratio nanowires for the growth and maintenance of human aortic SMCs. The nanowire surfaces were fabricated from polycaprolactone and were immobilized with collagen. The objective of this study is to reveal how SMCs interact with collagen immobilized nanostructures. The results indicate significantly higher cellular adhesion on nanostructured and collagen immobilized surfaces; however, SMCs on nanostructured surfaces exhibit a more elongated phenotype. The reduction of MTT was significantly lower on nanowire (NW) and collagen immobilized NW (colNW) surfaces, suggesting that SMCs on nanostructured surfaces may be differentiated and slowly dividing. Scanning electron microscopy results reveal that SMCs on nanostructured surfaces are more elongated and that cells are interacting with the nano-features on the surface. After providing differentiation cues, heavy chain myosin and calponin, specific to a contractile SMC phenotype, are upregulated on collagen immobilized surfaces. These results suggest that nanotopography affects cell adhesion, proliferation, as well as cell elongation, while collagen immobilized surfaces greatly affect cell differentiation.
Collapse
|
27
|
Leszczak V, Popat KC. Direct co-culture of endothelial and smooth muscle cells on poly(ε-caprolactone) nanowire surfaces. RSC Adv 2014. [DOI: 10.1039/c4ra09416f] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
In this study, we have investigated co-cultures of ECs and SMCs on nanostructured poly(ε-caprolactone) surfaces. The results presented here indicate that nanostructured surfaces may be good interfaces for use in cardiovascular applications and warrants further investigation.
Collapse
Affiliation(s)
- Victoria Leszczak
- Department of Mechanical Engineering
- Colorado State University
- Fort Collins, USA
| | - Ketul C. Popat
- Department of Mechanical Engineering
- Colorado State University
- Fort Collins, USA
- School of Biomedical Engineering
- Colorado State University
| |
Collapse
|
28
|
Naturally and synthetic smart composite biomaterials for tissue regeneration. Adv Drug Deliv Rev 2013; 65:471-96. [PMID: 22465488 DOI: 10.1016/j.addr.2012.03.009] [Citation(s) in RCA: 210] [Impact Index Per Article: 19.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2012] [Revised: 03/01/2012] [Accepted: 03/07/2012] [Indexed: 11/23/2022]
Abstract
The development of smart biomaterials for tissue regeneration has become the focus of intense research interest. More opportunities are available by the composite approach of combining the biomaterials in the form of biopolymers and/or bioceramics either synthetic or natural. Strategies to provide smart capabilities to the composite biomaterials primarily seek to achieve matrices that are instructive/inductive to cells, or that stimulate/trigger target cell responses that are crucial in the tissue regeneration processes. Here, we review in-depth, recent developments concerning smart composite biomaterials available for delivery systems of biofactors and cells and scaffolding matrices in tissue engineering. Smart composite designs are possible by modulating the bulk and surface properties that mimic the native tissues, either in chemical (extracellular matrix molecules) or in physical properties (e.g. stiffness), or by introducing external therapeutic molecules (drugs, proteins and genes) within the structure in a way that allows sustainable and controllable delivery, even time-dependent and sequential delivery of multiple biofactors. Responsiveness to internal or external stimuli, including pH, temperature, ionic strength, and magnetism, is another promising means to improve the multifunctionality in smart scaffolds with on-demand delivery potential. These approaches will provide the next-generation platforms for designing three-dimensional matrices and delivery systems for tissue regenerative applications.
Collapse
|
29
|
Melchiorri AJ, Hibino N, Fisher JP. Strategies and techniques to enhance the in situ endothelialization of small-diameter biodegradable polymeric vascular grafts. TISSUE ENGINEERING PART B-REVIEWS 2013; 19:292-307. [PMID: 23252992 DOI: 10.1089/ten.teb.2012.0577] [Citation(s) in RCA: 136] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Due to the lack of success in small-diameter (<6 mm) prosthetic vascular grafts, a variety of strategies have evolved utilizing a tissue-engineering approach. Much of this work has focused on enhancing the endothelialization of these grafts. A healthy, confluent endothelial layer provides dynamic control over homeo-stasis, influencing and preventing thrombosis and smooth muscle cell proliferation that can lead to intimal hyperplasia. Strategies to improve endothelialization of biodegradable polymeric grafts have encompassed both chemical and physical modifications to graft surfaces, many focusing on the recruitment of endothelial and endothelial progenitor cells. This review aims to provide a compilation of current and developing strategies that utilize in situ endothelialization to improve vascular graft outcomes, providing a context for the future directions of vascular tissue-engineering strategies that do not require preprocedural cell seeding.
Collapse
Affiliation(s)
- Anthony J Melchiorri
- Fischell Department of Bioengineering, University of Maryland, College Park, Maryland 20742, USA.
| | | | | |
Collapse
|
30
|
Del Gaudio C, Ercolani E, Galloni P, Santilli F, Baiguera S, Polizzi L, Bianco A. Aspirin-loaded electrospun poly(ε-caprolactone) tubular scaffolds: potential small-diameter vascular grafts for thrombosis prevention. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2013; 24:523-532. [PMID: 23135411 DOI: 10.1007/s10856-012-4803-3] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2012] [Accepted: 10/19/2012] [Indexed: 06/01/2023]
Abstract
Thrombosis is the main cause of failure of small-diameter synthetic vascular grafts when used for by-pass procedures. The development of bioresorbable vascular scaffolds with localized and sustained intra-luminal antithrombotic drug release could be considered a desirable improvement towards a valuable solution for this relevant clinical need. For this aim, we present the fabrication and characterization of aspirin-loaded electrospun poly(ε-caprolactone) tubular scaffolds as a vascular drug-delivery graft. Three different drug concentrations were considered (i.e., 1, 5 or 10 % w/w). Although a fibrous structure was clearly observed for all the collected scaffolds, aspirin content was directly implied in the final microstructure leading to a bimodal fiber diameter distribution and fused fibers at crossing-points (5 or 10 % w/w). Mechanical response highlighted a direct relationship for modulus and stress at break with the aspirin content, while the elongation at break was not remarkably different for the investigated cases. The temporal drug release was strongly dependent from the amount of loaded aspirin, reaching a steady state release after about 50 h. Finally, the adhesion assay confirmed the capability of the electrospun scaffolds to reduce platelet adhesion/aggregation onto aspirin loaded polymeric fibers. Aspirin-loaded electrospun tubular scaffold could represent a feasible candidate to develop a novel bioresorbable drug-releasing graft for small-diameter vessel replacements.
Collapse
Affiliation(s)
- Costantino Del Gaudio
- Department of Industrial Engineering, University of Rome "Tor Vergata", INSTM Research Unit Roma Tor Vergata, Via del Politecnico 1, 00133, Rome, Italy.
| | | | | | | | | | | | | |
Collapse
|
31
|
Ercolani E, Del Gaudio C, Bianco A. Vascular tissue engineering of small-diameter blood vessels: reviewing the electrospinning approach. J Tissue Eng Regen Med 2013; 9:861-88. [DOI: 10.1002/term.1697] [Citation(s) in RCA: 97] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2012] [Revised: 10/08/2012] [Accepted: 12/20/2012] [Indexed: 11/07/2022]
Affiliation(s)
- Enrico Ercolani
- Department of Industrial Engineering, INSTM Research Unit Roma Tor Vergata; University of Rome ‘Tor Vergata’; Via del Politecnico 1 00133 Rome Italy
| | - Costantino Del Gaudio
- Department of Industrial Engineering, INSTM Research Unit Roma Tor Vergata; University of Rome ‘Tor Vergata’; Via del Politecnico 1 00133 Rome Italy
| | - Alessandra Bianco
- Department of Industrial Engineering, INSTM Research Unit Roma Tor Vergata; University of Rome ‘Tor Vergata’; Via del Politecnico 1 00133 Rome Italy
| |
Collapse
|
32
|
Sternberg K, Petersen S, Grabow N, Senz V, zu Schwabedissen HM, Kroemer HK, Schmitz KP. Implant-associated local drug delivery systems based on biodegradable polymers: customized designs for different medical applications. ACTA ACUST UNITED AC 2013; 58:417-27. [DOI: 10.1515/bmt-2012-0049] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2012] [Accepted: 05/17/2013] [Indexed: 12/17/2022]
|
33
|
Klopsch C, Gäbel R, Kaminski A, Mark P, Wang W, Toelk A, Delyagina E, Kleiner G, Koch L, Chichkov B, Mela P, Jockenhoevel S, Ma N, Steinhoff G. Spray- and laser-assisted biomaterial processing for fast and efficient autologous cell-plus-matrix tissue engineering. J Tissue Eng Regen Med 2012. [DOI: 10.1002/term.1657] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Christian Klopsch
- Reference and Translation Centre for Cardiac Stem Cell Therapy; University of Rostock; Germany
- Department of Cardiac Surgery, Medical Faculty; University of Rostock; Germany
| | - Ralf Gäbel
- Reference and Translation Centre for Cardiac Stem Cell Therapy; University of Rostock; Germany
- Department of Cardiac Surgery, Medical Faculty; University of Rostock; Germany
| | - Alexander Kaminski
- Reference and Translation Centre for Cardiac Stem Cell Therapy; University of Rostock; Germany
- Department of Cardiac Surgery, Medical Faculty; University of Rostock; Germany
| | - Peter Mark
- Reference and Translation Centre for Cardiac Stem Cell Therapy; University of Rostock; Germany
- Department of Cardiac Surgery, Medical Faculty; University of Rostock; Germany
| | - Weiwei Wang
- Reference and Translation Centre for Cardiac Stem Cell Therapy; University of Rostock; Germany
- Department of Cardiac Surgery, Medical Faculty; University of Rostock; Germany
| | - Anita Toelk
- Reference and Translation Centre for Cardiac Stem Cell Therapy; University of Rostock; Germany
- Department of Cardiac Surgery, Medical Faculty; University of Rostock; Germany
| | - Evgenya Delyagina
- Reference and Translation Centre for Cardiac Stem Cell Therapy; University of Rostock; Germany
- Department of Cardiac Surgery, Medical Faculty; University of Rostock; Germany
| | - Gabriela Kleiner
- Reference and Translation Centre for Cardiac Stem Cell Therapy; University of Rostock; Germany
- Department of Cardiac Surgery, Medical Faculty; University of Rostock; Germany
| | | | | | - Petra Mela
- Department of Tissue Engineering and Textile Implants, AME-Helmholtz Institute for Biomedical Engineering; RWTH Aachen University; Germany
| | - Stefan Jockenhoevel
- Department of Tissue Engineering and Textile Implants, AME-Helmholtz Institute for Biomedical Engineering; RWTH Aachen University; Germany
| | - Nan Ma
- Reference and Translation Centre for Cardiac Stem Cell Therapy; University of Rostock; Germany
- Department of Cardiac Surgery, Medical Faculty; University of Rostock; Germany
| | - Gustav Steinhoff
- Reference and Translation Centre for Cardiac Stem Cell Therapy; University of Rostock; Germany
- Department of Cardiac Surgery, Medical Faculty; University of Rostock; Germany
| |
Collapse
|
34
|
Lancuški A, Fort S, Bossard F. Electrospun azido-PCL nanofibers for enhanced surface functionalization by click chemistry. ACS APPLIED MATERIALS & INTERFACES 2012; 4:6499-6504. [PMID: 23145558 DOI: 10.1021/am301458y] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
This paper reports highly surface functionalized and "clickable" α,ω-azido-poly(ε-caprolactone) fibers (f-PCL-N(3)), obtained by classical electrospinning setup. Azide-functionalized PCL was obtained from a commercially available α,ω-poly(ε-caprolactone)-diol, PCL(2), and electrospun with a nonderivative high-molecular-weight PCL. Successful chemical modifications of PCL(2) were confirmed by NMR, FTIR and MALDI-TOF mass spectroscopy. The high content of surface azides, as a response to the high electric field applied, was characterized using a colorimetric assay. In addition, azide reduction to amines revealed a nondestructive route for highly amine-functionalized fibers. Fluorescence labeling of f-PCL-N(3) fibers with FITC-alkyne fluorophore proved that the azide groups are mainly surface-localized as well as highly available for click-chemistry coupling.
Collapse
Affiliation(s)
- Anica Lancuški
- Laboratoire Rhéologie et Procédés, Université Joseph-Fourier - Grenoble Institut National Polytechnique, 1301 rue de la piscine, 38041 Grenoble Cedex 9, France
| | | | | |
Collapse
|
35
|
Palacios-Cuesta M, Liras M, Labrugère C, Rodríguez-Hernández J, García O. Functional micropatterned surfaces prepared by simultaneous UV-lithography and surface segregation of fluorinated copolymers. ACTA ACUST UNITED AC 2012. [DOI: 10.1002/pola.26318] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
|
36
|
Shen W, Cai K, Yang Z, Yan Y, Yang W, Liu P. Improved endothelialization of NiTi alloy by VEGF functionalized nanocoating. Colloids Surf B Biointerfaces 2012; 94:347-53. [DOI: 10.1016/j.colsurfb.2012.02.009] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2011] [Revised: 02/08/2012] [Accepted: 02/08/2012] [Indexed: 01/02/2023]
|