1
|
Li J, Barlow LN, Sask KN. Enhancement of protein immobilization on polydimethylsiloxane using a synergistic combination of polydopamine and micropattern surface modification. JOURNAL OF BIOMATERIALS SCIENCE. POLYMER EDITION 2023; 34:2376-2399. [PMID: 37609691 DOI: 10.1080/09205063.2023.2248799] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2023] [Revised: 07/07/2023] [Accepted: 08/11/2023] [Indexed: 08/24/2023]
Abstract
Understanding protein interactions at biointerfaces is critical for the improved design of biomaterials and medical devices. Polydimethylsiloxane (PDMS) is used for numerous device applications, and surface modifications can enhance protein immobilization and the response to cells. A multifunctional approach combining topographical and biochemical modifications was applied to PDMS by fabricating 10-20 µm scale patterns onto PDMS surfaces and by coating with polydopamine (PDA). The modifications were confirmed by surface characterization and bovine serum albumin (BSA), fibrinogen (Fg), and fetuin-A (Fet-A) were radiolabeled with 125I. The amounts of protein attached to the surface before and after elution with sodium dodecyl sulfate (SDS) were quantified from single and complex multi-protein solutions to determine protein stability and competitive binding. The PDA coatings were the most stable and capable of immobilizing the highest levels of all proteins. Furthermore, combinations of PDA coatings with the smallest micropatterns provided an additional improvement, enhancing the amount immobilized and the stability. The adsorption of BSA and Fg from plasma demonstrated competitive binding and possible orientation changes, respectively. It was determined that Fet-A, a less studied protein, adsorbed from plasma at low levels, but the adsorption from fetal bovine serum (FBS) was significantly greater, providing important quantification data from radiolabeling that is relevant to many cell culture studies. Overall, combining topography and PDA modification has a synergistic effect on improving protein immobilization. These findings provide new insight on the quantities of proteins bound to PDMS and PDA coatings with implications for cell interactions in various biotechnology and medical applications.
Collapse
Affiliation(s)
- Jie Li
- School of Biomedical Engineering, McMaster University, Hamilton, Ontario, Canada
| | - Leah N Barlow
- Department of Materials Science and Engineering, McMaster University, Hamilton, Ontario, Canada
| | - Kyla N Sask
- School of Biomedical Engineering, McMaster University, Hamilton, Ontario, Canada
- Department of Materials Science and Engineering, McMaster University, Hamilton, Ontario, Canada
| |
Collapse
|
2
|
Bandzerewicz A, Niebuda K, Gadomska-Gajadhur A. Synthesis and Cytotoxicity Studies of Poly(1,4-butanediol citrate) Gels for Cell Culturing. Gels 2023; 9:628. [PMID: 37623083 PMCID: PMC10453459 DOI: 10.3390/gels9080628] [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: 07/21/2023] [Revised: 08/01/2023] [Accepted: 08/03/2023] [Indexed: 08/26/2023] Open
Abstract
One of the main branches of regenerative medicine is biomaterials research, which is designed to develop and study materials for regenerative therapies, controlled drug delivery systems, wound dressings, etc. Research is continually being conducted to find biomaterials-especially polymers-with better biocompatibility, broader modification possibilities and better application properties. This study describes a potential biomaterial, poly(1,4-butanediol citrate). The gelation time of poly(1,4-butanediol citrate) was estimated. Based on this, the limiting reaction time and temperature were determined to avoid gelling of the reaction mixture. Experiments with different process conditions were carried out, and the products were characterised through NMR spectra analysis. Using statistical methods, the functions were defined, describing the dependence of the degree of esterification of the acid groups on the following process parameters: temperature and COOH/OH group ratio. Polymer films from the synthesised polyester were prepared and characterised. The main focus was assessing the initial biocompatibility of the materials.
Collapse
|
3
|
Strohbach A, Busch R. Predicting the In Vivo Performance of Cardiovascular Biomaterials: Current Approaches In Vitro Evaluation of Blood-Biomaterial Interactions. Int J Mol Sci 2021; 22:ijms222111390. [PMID: 34768821 PMCID: PMC8583792 DOI: 10.3390/ijms222111390] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2021] [Revised: 10/04/2021] [Accepted: 10/18/2021] [Indexed: 12/29/2022] Open
Abstract
The therapeutic efficacy of a cardiovascular device after implantation is highly dependent on the host-initiated complement and coagulation cascade. Both can eventually trigger thrombosis and inflammation. Therefore, understanding these initial responses of the body is of great importance for newly developed biomaterials. Subtle modulation of the associated biological processes could optimize clinical outcomes. However, our failure to produce truly blood compatible materials may reflect our inability to properly understand the mechanisms of thrombosis and inflammation associated with biomaterials. In vitro models mimicking these processes provide valuable insights into the mechanisms of biomaterial-induced complement activation and coagulation. Here, we review (i) the influence of biomaterials on complement and coagulation cascades, (ii) the significance of complement-coagulation interactions for the clinical success of cardiovascular implants, (iii) the modulation of complement activation by surface modifications, and (iv) in vitro testing strategies.
Collapse
Affiliation(s)
- Anne Strohbach
- Department of Internal Medicine B Cardiology, University Medicine Greifswald, Ferdinand-Sauerbruch-Str., 17475 Greifswald, Germany;
- DZHK (German Centre for Cardiovascular Research), Partner Site Greifswald, Fleischmannstr. 42-44, 17489 Greifswald, Germany
- Correspondence:
| | - Raila Busch
- Department of Internal Medicine B Cardiology, University Medicine Greifswald, Ferdinand-Sauerbruch-Str., 17475 Greifswald, Germany;
- DZHK (German Centre for Cardiovascular Research), Partner Site Greifswald, Fleischmannstr. 42-44, 17489 Greifswald, Germany
| |
Collapse
|
4
|
Heng JW, Yazid MD, Abdul Rahman MR, Sulaiman N. Coatings in Decellularized Vascular Scaffolds for the Establishment of a Functional Endothelium: A Scoping Review of Vascular Graft Refinement. Front Cardiovasc Med 2021; 8:677588. [PMID: 34395554 PMCID: PMC8358320 DOI: 10.3389/fcvm.2021.677588] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2021] [Accepted: 07/06/2021] [Indexed: 12/12/2022] Open
Abstract
Developments in tissue engineering techniques have allowed for the creation of biocompatible, non-immunogenic alternative vascular grafts through the decellularization of existing tissues. With an ever-growing number of patients requiring life-saving vascular bypass grafting surgeries, the production of functional small diameter decellularized vascular scaffolds has never been more important. However, current implementations of small diameter decellularized vascular grafts face numerous clinical challenges attributed to premature graft failure as a consequence of common failure mechanisms such as acute thrombogenesis and intimal hyperplasia resulting from insufficient endothelial coverage on the graft lumen. This review summarizes some of the surface modifying coating agents currently used to improve the re-endothelialization efficiency and endothelial cell persistence in decellularized vascular scaffolds that could be applied in producing a better patency small diameter vascular graft. A comprehensive search yielding 192 publications was conducted in the PubMed, Scopus, Web of Science, and Ovid electronic databases. Careful screening and removal of unrelated publications and duplicate entries resulted in a total of 16 publications, which were discussed in this review. Selected publications demonstrate that the utilization of surface coating agents can induce endothelial cell adhesion, migration, and proliferation therefore leads to increased re-endothelialization efficiency. Unfortunately, the large variance in methodologies complicates comparison of coating effects between studies. Thus far, coating decellularized tissue gave encouraging results. These developments in re-endothelialization could be incorporated in the fabrication of functional, off-the-shelf alternative small diameter vascular scaffolds.
Collapse
Affiliation(s)
- Jun Wei Heng
- Centre for Tissue Engineering and Regenerative Medicine, Faculty of Medicine, Universiti Kebangsaan Malaysia, Kuala Lumpur, Malaysia
| | - Muhammad Dain Yazid
- Centre for Tissue Engineering and Regenerative Medicine, Faculty of Medicine, Universiti Kebangsaan Malaysia, Kuala Lumpur, Malaysia
| | - Mohd Ramzisham Abdul Rahman
- Department of Surgery, Hospital Canselor Tuanku Muhriz, Universiti Kebangsaan Malaysia, Kuala Lumpur, Malaysia
| | - Nadiah Sulaiman
- Centre for Tissue Engineering and Regenerative Medicine, Faculty of Medicine, Universiti Kebangsaan Malaysia, Kuala Lumpur, Malaysia
| |
Collapse
|
5
|
Kimicata M, Swamykumar P, Fisher JP. Extracellular Matrix for Small-Diameter Vascular Grafts. Tissue Eng Part A 2020; 26:1388-1401. [PMID: 33231135 PMCID: PMC7759287 DOI: 10.1089/ten.tea.2020.0201] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2020] [Accepted: 11/11/2020] [Indexed: 01/15/2023] Open
Abstract
To treat coronary heart disease, coronary artery bypass grafts are used to divert blood flow around blockages in the coronary arteries. Autologous grafts are the gold standard of care, but they are characterized by their lack of availability, low quality, and high failure rates. Alternatively, tissue-engineered small-diameter vascular grafts made from synthetic or natural polymers have not demonstrated adequate results to replace autologous grafts; synthetic grafts result in a loss of patency due to thrombosis and intimal hyperplasia, whereas scaffolds from natural polymers are generally unable to support the physiological conditions. Extracellular matrix (ECM) from a variety of sources, including cell-derived, 2D, and cannular tissues, has become an increasingly useful tool for this application. The current review examines the ECM-based methods that have recently been investigated in the field and comments on their viability for clinical applications.
Collapse
Affiliation(s)
- Megan Kimicata
- Department of Materials Science and Engineering, University of Maryland, College Park, Maryland, USA
- Center for Engineering Complex Tissues, and University of Maryland, College Park, Maryland, USA
| | - Prateek Swamykumar
- Center for Engineering Complex Tissues, and University of Maryland, College Park, Maryland, USA
- Fischell Department of Bioengineering, University of Maryland, College Park, Maryland, USA
| | - John P. Fisher
- Center for Engineering Complex Tissues, and University of Maryland, College Park, Maryland, USA
- Fischell Department of Bioengineering, University of Maryland, College Park, Maryland, USA
| |
Collapse
|
6
|
Braune S, Latour RA, Reinthaler M, Landmesser U, Lendlein A, Jung F. In Vitro Thrombogenicity Testing of Biomaterials. Adv Healthc Mater 2019; 8:e1900527. [PMID: 31612646 DOI: 10.1002/adhm.201900527] [Citation(s) in RCA: 44] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2019] [Revised: 08/15/2019] [Indexed: 12/29/2022]
Abstract
The short- and long-term thrombogenicity of implant materials is still unpredictable, which is a significant challenge for the treatment of cardiovascular diseases. A knowledge-based approach for implementing biofunctions in materials requires a detailed understanding of the medical device in the biological system. In particular, the interplay between material and blood components/cells as well as standardized and commonly acknowledged in vitro test methods allowing a reproducible categorization of the material thrombogenicity requires further attention. Here, the status of in vitro thrombogenicity testing methods for biomaterials is reviewed, particularly taking in view the preparation of test materials and references, the selection and characterization of donors and blood samples, the prerequisites for reproducible approaches and applied test systems. Recent joint approaches in finding common standards for a reproducible testing are summarized and perspectives for a more disease oriented in vitro thrombogenicity testing are discussed.
Collapse
Affiliation(s)
- Steffen Braune
- Institute of Biomaterial Science and Berlin‐Brandenburg Centre for Regenerative Therapies (BCRT)Helmholtz‐Zentrum Geesthacht Kantstrasse 55 14513 Teltow Germany
| | - Robert A. Latour
- Rhodes Engineering Research CenterDepartment of BioengineeringClemson University Clemson SC 29634 USA
| | - Markus Reinthaler
- Institute of Biomaterial Science and Berlin‐Brandenburg Centre for Regenerative Therapies (BCRT)Helmholtz‐Zentrum Geesthacht Kantstrasse 55 14513 Teltow Germany
- Department for CardiologyCharité UniversitätsmedizinCampus Benjamin Franklin Hindenburgdamm 30 12203 Berlin Germany
| | - Ulf Landmesser
- Department for CardiologyCharité UniversitätsmedizinCampus Benjamin Franklin Hindenburgdamm 30 12203 Berlin Germany
| | - Andreas Lendlein
- Institute of Biomaterial Science and Berlin‐Brandenburg Centre for Regenerative Therapies (BCRT)Helmholtz‐Zentrum Geesthacht Kantstrasse 55 14513 Teltow Germany
- Institute of ChemistryUniversity of Potsdam Karl‐Liebknecht‐Strasse 24‐25 14476 Potsdam Germany
- Helmholtz Virtual Institute “Multifunctional Biomaterials for Medicine”Helmholtz‐Zentrum Geesthacht Kantstrasse 55 14513 Teltow Germany
| | - Friedrich Jung
- Institute of Biomaterial Science and Berlin‐Brandenburg Centre for Regenerative Therapies (BCRT)Helmholtz‐Zentrum Geesthacht Kantstrasse 55 14513 Teltow Germany
- Helmholtz Virtual Institute “Multifunctional Biomaterials for Medicine”Helmholtz‐Zentrum Geesthacht Kantstrasse 55 14513 Teltow Germany
| |
Collapse
|
7
|
Santoro R, Venkateswaran S, Amadeo F, Zhang R, Brioschi M, Callanan A, Agrifoglio M, Banfi C, Bradley M, Pesce M. Acrylate-based materials for heart valve scaffold engineering. Biomater Sci 2018; 6:154-167. [PMID: 29148548 DOI: 10.1039/c7bm00854f] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Calcific aortic valve disease (CAVD) is the most frequent cardiac valve pathology. Its standard treatment consists of surgical replacement either with mechanical (metal made) or biological (animal tissue made) valve prostheses, both of which have glaring deficiencies. In the search for novel materials to manufacture artificial valve tissue, we have conducted a high-throughput screening with subsequent up-scaling to identify non-degradable polymer substrates that promote valve interstitial cells (VICs) adherence/growth and, at the same time, prevent their evolution toward a pro-calcific phenotype. Here, we provide evidence that one of the two identified 'hit' polymers, poly(methoxyethylmethacrylate-co-diethylaminoethylmethacrylate), provided robust VICs adhesion and maintained the healthy VICs phenotype without inducing pro-osteogenic differentiation. This ability was also maintained when the polymer was used to coat a non-woven poly-caprolactone (PCL) scaffold using a novel solvent coating procedure, followed by bioreactor-assisted VICs seeding. Since we observed that VICs had an increased secretion of the elastin-maturing component MFAP4 in addition to other valve-specific extracellular matrix components, we conclude that valve implants constructed with this polyacrylate will drive the biological response of human valve-specific cells.
Collapse
Affiliation(s)
- Rosaria Santoro
- Unità di Ingegneria Tissutale Cardiovascolare, Centro Cardiologico Monzino, IRCCS, Milan, Italy.
| | | | | | | | | | | | | | | | | | | |
Collapse
|
8
|
Nikoubashman O, Heringer S, Feher K, Brockmann MA, Sellhaus B, Dreser A, Kurtenbach K, Pjontek R, Jockenhövel S, Weis J, Kießling F, Gries T, Wiesmann M. Development of a Polymer-Based Biodegradable Neurovascular Stent Prototype: A Preliminary In Vitro and In Vivo Study. Macromol Biosci 2018; 18:e1700292. [PMID: 29855168 DOI: 10.1002/mabi.201700292] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2017] [Revised: 01/10/2018] [Indexed: 11/10/2022]
Abstract
Biodegradable stents are not established in neurovascular interventions. In this study, mechanical, radiological, and histological characteristics of a stent prototype developed for neurovascular use are presented. The elasticity and brittleness of PLA 96/4, PLDL 70/30, PCL, and PLGA 85/15 and 10/90 polymers in in vitro experiments are first analyzed. After excluding the inapt polymers, degradability and mechanical characteristics of 78 PLGA 85/15 and PLGA 10/90 stent prototypes are analyzed. After excluding PLGA 10/90 stents because of rapid loss of mass PLGA 85/15 stents in porcine in vivo experiments are analyzed. Angiographic occlusion rates 7 d, 1 month, 3 months, and 6 months after stent implantation are assessed. Histological outcome measures are the presence of signs of inflammation, endothelialization, and the homogeneity of degradation after six months. One case of stent occlusion occurs within the first 7 d. There is a prominent foreign-body reaction with considerable mononuclear and minor granulocytic inflammation combined with incomplete fragmental degradation of the struts. It is possible to produce a stent prototype with dimensions that fit the typical size of carotid arteries. Major improvements concerning thrombogenicity, degradation, and inflammatory response are required to produce biodegradable stents that are suitable for neurovascular interventions.
Collapse
Affiliation(s)
- Omid Nikoubashman
- Department of Diagnostic and Interventional Neuroradiology, University Hospital, RWTH Aachen University, Pauwelsstr. 30, 52074, Aachen, Germany
| | - Sarah Heringer
- Department of Diagnostic and Interventional Neuroradiology, University Hospital, RWTH Aachen University, Pauwelsstr. 30, 52074, Aachen, Germany
| | - Katalin Feher
- Institute of Tissue Engineering and Textile Implants, RWTH Aachen University, Otto-Blumenthal-Str. 1, 52074, Aachen, Germany
| | - Marc-Alexander Brockmann
- Department of Diagnostic and Interventional Neuroradiology, University Hospital Mainz, 55131, Mainz, Germany
| | - Bernd Sellhaus
- Institute of Neuropathology, University Hospital, RWTH Aachen University, Pauwelsstr. 30, 52074, Aachen, Germany
| | - Alice Dreser
- Institute of Neuropathology, University Hospital, RWTH Aachen University, Pauwelsstr. 30, 52074, Aachen, Germany
| | - Kathrin Kurtenbach
- Institute of Tissue Engineering and Textile Implants, RWTH Aachen University, Otto-Blumenthal-Str. 1, 52074, Aachen, Germany.,Institute of Neuropathology, University Hospital, RWTH Aachen University, Pauwelsstr. 30, 52074, Aachen, Germany
| | - Rastislav Pjontek
- Department of Diagnostic and Interventional Neuroradiology, University Hospital, RWTH Aachen University, Pauwelsstr. 30, 52074, Aachen, Germany.,Institute of Neuropathology, University Hospital, RWTH Aachen University, Pauwelsstr. 30, 52074, Aachen, Germany
| | - Stefan Jockenhövel
- Institute of Tissue Engineering and Textile Implants, RWTH Aachen University, Otto-Blumenthal-Str. 1, 52074, Aachen, Germany.,Institute of Neuropathology, University Hospital, RWTH Aachen University, Pauwelsstr. 30, 52074, Aachen, Germany.,Institute of Applied Medical Engineering, University Hospital, RWTH Aachen University, Pauwelsstr. 20, 52074, Aachen, Germany
| | - Joachim Weis
- Institute of Neuropathology, University Hospital, RWTH Aachen University, Pauwelsstr. 30, 52074, Aachen, Germany
| | - Fabian Kießling
- Institute of Experimental Molecular Imaging, University Hospital, RWTH Aachen University, Pauwelsstr. 30, 52074, Aachen, Germany
| | - Thomas Gries
- Institute of Tissue Engineering and Textile Implants, RWTH Aachen University, Otto-Blumenthal-Str. 1, 52074, Aachen, Germany
| | - Martin Wiesmann
- Department of Diagnostic and Interventional Neuroradiology, University Hospital, RWTH Aachen University, Pauwelsstr. 30, 52074, Aachen, Germany
| |
Collapse
|
9
|
Firkowska-Boden I, Zhang X, Jandt KD. Controlling Protein Adsorption through Nanostructured Polymeric Surfaces. Adv Healthc Mater 2018; 7. [PMID: 29193909 DOI: 10.1002/adhm.201700995] [Citation(s) in RCA: 62] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2017] [Revised: 10/09/2017] [Indexed: 12/11/2022]
Abstract
The initial host response to healthcare materials' surfaces after implantation is the adsorption of proteins from blood and interstitial fluids. This adsorbed protein layer modulates the biological/cellular responses to healthcare materials. This stresses the significance of the surface protein assembly for the biocompatibility and functionality of biomaterials and necessitates a profound fundamental understanding of the capability to control protein-surface interactions. This review, therefore, addresses this by systematically analyzing and discussing strategies to control protein adsorption on polymeric healthcare materials through the introduction of specific surface nanostructures. Relevant proteins, healthcare materials' surface properties, clinical applications of polymer healthcare materials, fabrication methods for nanostructured polymer surfaces, amorphous, semicrystalline and block copolymers are considered with a special emphasis on the topographical control of protein adsorption. The review shows that nanostructured polymer surfaces are powerful tools to control the amount, orientation, and order of adsorbed protein layers. It also shows that the understanding of the biological responses to such ordered protein adsorption is still in its infancy, yet it has immense potential for future healthcare materials. The review, which is-as far as it is known-the first one discussing protein adsorption on nanostructured polymer surfaces, concludes with highlighting important current research questions.
Collapse
Affiliation(s)
- Izabela Firkowska-Boden
- Chair of Materials Science (CMS); Otto Schott Institute of Materials Research (OSIM); Friedrich Schiller University Jena; Löbdergraben 32 07743 Jena Germany
| | - Xiaoyuan Zhang
- Chair of Materials Science (CMS); Otto Schott Institute of Materials Research (OSIM); Friedrich Schiller University Jena; Löbdergraben 32 07743 Jena Germany
| | - Klaus D. Jandt
- Chair of Materials Science (CMS); Otto Schott Institute of Materials Research (OSIM); Friedrich Schiller University Jena; Löbdergraben 32 07743 Jena Germany
- Jena Center for Soft Matter (JCSM); Friedrich Schiller University Jena; Philosophenweg 7 07743 Jena Germany
- Jena School for Microbial Communication (JSMC); Neugasse 23 07743 Jena Germany
| |
Collapse
|
10
|
López-Ruiz E, Venkateswaran S, Perán M, Jiménez G, Pernagallo S, Díaz-Mochón JJ, Tura-Ceide O, Arrebola F, Melchor J, Soto J, Rus G, Real PJ, Diaz-Ricart M, Conde-González A, Bradley M, Marchal JA. Poly(ethylmethacrylate-co-diethylaminoethyl acrylate) coating improves endothelial re-population, bio-mechanical and anti-thrombogenic properties of decellularized carotid arteries for blood vessel replacement. Sci Rep 2017; 7:407. [PMID: 28341826 PMCID: PMC5412652 DOI: 10.1038/s41598-017-00294-6] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2016] [Accepted: 02/17/2017] [Indexed: 12/02/2022] Open
Abstract
Decellularized vascular scaffolds are promising materials for vessel replacements. However, despite the natural origin of decellularized vessels, issues such as biomechanical incompatibility, immunogenicity risks and the hazards of thrombus formation, still need to be addressed. In this study, we coated decellularized vessels obtained from porcine carotid arteries with poly (ethylmethacrylate-co-diethylaminoethylacrylate) (8g7) with the purpose of improving endothelial coverage and minimizing platelet attachment while enhancing the mechanical properties of the decellularized vascular scaffolds. The polymer facilitated binding of endothelial cells (ECs) with high affinity and also induced endothelial cell capillary tube formation. In addition, platelets showed reduced adhesion on the polymer under flow conditions. Moreover, the coating of the decellularized arteries improved biomechanical properties by increasing its tensile strength and load. In addition, after 5 days in culture, ECs seeded on the luminal surface of 8g7-coated decellularized arteries showed good regeneration of the endothelium. Overall, this study shows that polymer coating of decellularized vessels provides a new strategy to improve re-endothelialization of vascular grafts, maintaining or enhancing mechanical properties while reducing the risk of thrombogenesis. These results could have potential applications in improving tissue-engineered vascular grafts for cardiovascular therapies with small caliber vessels.
Collapse
Affiliation(s)
- Elena López-Ruiz
- Department of Health Sciences, University of Jaén, Jaén, Spain.,Biopathology and Regenerative Medicine Institute (IBIMER), Centre for Biomedical Research, University of Granada, Granada, Spain
| | | | - Macarena Perán
- Department of Health Sciences, University of Jaén, Jaén, Spain.,Biopathology and Regenerative Medicine Institute (IBIMER), Centre for Biomedical Research, University of Granada, Granada, Spain
| | - Gema Jiménez
- Biopathology and Regenerative Medicine Institute (IBIMER), Centre for Biomedical Research, University of Granada, Granada, Spain.,Department of Human Anatomy and Embryology, Faculty of Medicine, University of Granada, Granada, Spain.,Biosanitary Research Institute of Granada (ibs.GRANADA), University Hospitals of Granada-University of Granada, Granada, Spain
| | - Salvatore Pernagallo
- School of Chemistry, EaStCHEM, University of Edinburgh, King's Buildings, Edinburgh, UK
| | - Juan J Díaz-Mochón
- Pfizer-Universidad de Granada-Junta de Andalucía Centre for Genomics and Oncological Research (GENYO), Granada, Spain
| | - Olga Tura-Ceide
- Department of Pulmonary Medicine, Hospital Clínic; Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), University of Barcelona, Barcelona, Spain.,Biomedical Research Networking Center on Respiratory Diseases (CIBERES), Madrid, Spain
| | - Francisco Arrebola
- Department of Histology, Faculty of Medicine, Institute of Neuroscience, Biomedical Research Centre, University of Granada, Granada, Spain
| | - Juan Melchor
- Biosanitary Research Institute of Granada (ibs.GRANADA), University Hospitals of Granada-University of Granada, Granada, Spain.,Department of Structural Mechanics, University of Granada, Politécnico de Fuentenueva, Granada, Spain
| | - Juan Soto
- Department of Structural Mechanics, University of Granada, Politécnico de Fuentenueva, Granada, Spain
| | - Guillermo Rus
- Biosanitary Research Institute of Granada (ibs.GRANADA), University Hospitals of Granada-University of Granada, Granada, Spain.,Department of Structural Mechanics, University of Granada, Politécnico de Fuentenueva, Granada, Spain
| | - Pedro J Real
- Pfizer-Universidad de Granada-Junta de Andalucía Centre for Genomics and Oncological Research (GENYO), Granada, Spain
| | - María Diaz-Ricart
- Department of Hemotherapy and Hemostasis, Hospital Clinic, Centre de Diagnostic Biomedic (CDB), Institute of Biomedical Research August Pi i Sunyer (IDIBAPS), Barcelona, Spain
| | | | - Mark Bradley
- School of Chemistry, EaStCHEM, University of Edinburgh, King's Buildings, Edinburgh, UK.
| | - Juan A Marchal
- Biopathology and Regenerative Medicine Institute (IBIMER), Centre for Biomedical Research, University of Granada, Granada, Spain. .,Department of Human Anatomy and Embryology, Faculty of Medicine, University of Granada, Granada, Spain. .,Biosanitary Research Institute of Granada (ibs.GRANADA), University Hospitals of Granada-University of Granada, Granada, Spain.
| |
Collapse
|
11
|
Venturato A, MacFarlane G, Geng J, Bradley M. Understanding Polymer-Cell Attachment. Macromol Biosci 2016; 16:1864-1872. [PMID: 27779357 DOI: 10.1002/mabi.201600253] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2016] [Revised: 08/25/2016] [Indexed: 01/26/2023]
Abstract
The development of polymeric materials with cell adhesion abilities requires an understanding of cell-surface interactions which vary with cell type. To investigate the correlation between cell attachment and the nature of the polymer, a series of random and block copolymers composed of 2-(dimethylamino)ethyl acrylate and ethyl acrylate are synthesized through single electron transfer living radical polymerization. The polymers are synthesized with highly defined and controlled monomer compositions and exhibited narrow polydispersity indices. These polymers are examined for their performance in the attachment and growth of HeLa and HEK cells, with attachment successfully modeled on monomer composition and polymer chain length, with both cell lines found to preferentially attach to moderately hydrophobic functional materials. The understanding of the biological-material interactions assessed in this study will underpin further investigations of engineered polymer scaffolds with predictable cell binding performance.
Collapse
Affiliation(s)
- Andrea Venturato
- School of Chemistry, University of Edinburgh, The King's Buildings, West Mains Road, Edinburgh, EH9 3KJ, UK
| | - Gillian MacFarlane
- School of Chemistry, University of Edinburgh, The King's Buildings, West Mains Road, Edinburgh, EH9 3KJ, UK
| | - Jin Geng
- School of Chemistry, University of Edinburgh, The King's Buildings, West Mains Road, Edinburgh, EH9 3KJ, UK
| | - Mark Bradley
- School of Chemistry, University of Edinburgh, The King's Buildings, West Mains Road, Edinburgh, EH9 3KJ, UK
| |
Collapse
|
12
|
Endothelial Repair and Regeneration Following Intimal Injury. J Cardiovasc Transl Res 2016; 9:91-101. [DOI: 10.1007/s12265-016-9677-1] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/25/2015] [Accepted: 01/13/2016] [Indexed: 12/19/2022]
|
13
|
Pang JH, Farhatnia Y, Godarzi F, Tan A, Rajadas J, Cousins BG, Seifalian AM. In situ Endothelialization: Bioengineering Considerations to Translation. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2015; 11:6248-64. [PMID: 26460851 DOI: 10.1002/smll.201402579] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/27/2014] [Revised: 06/14/2015] [Indexed: 05/10/2023]
Abstract
Improving patency rates of current cardiovascular implants remains a major challenge. It is widely accepted that regeneration of a healthy endothelium layer on biomaterials could yield the perfect blood-contacting surface. Earlier efforts in pre-seeding endothelial cells in vitro demonstrated success in enhancing patency, but translation to the clinic is largely hampered due to its impracticality. In situ endothelialization, which aims to create biomaterial surfaces capable of self-endothelializing upon implantation, appears to be an extremely promising solution, particularly with the utilization of endothelial progenitor cells (EPCs). Nevertheless, controlling cell behavior in situ using immobilized biomolecules or physical patterning can be complex, thus warranting careful consideration. This review aims to provide valuable insight into the rationale and recent developments in biomaterial strategies to enhance in situ endothelialization. In particular, a discussion on the important bio-/nanoengineering considerations and lessons learnt from clinical trials are presented to aid the future translation of this exciting paradigm.
Collapse
Affiliation(s)
- Jun Hon Pang
- Centre for Nanotechnology & Regenerative Medicine, Division of Surgery & Interventional Science, University College London (UCL), London, UK
| | - Yasmin Farhatnia
- Centre for Nanotechnology & Regenerative Medicine, Division of Surgery & Interventional Science, University College London (UCL), London, UK
| | - Fatemeh Godarzi
- Centre for Nanotechnology & Regenerative Medicine, Division of Surgery & Interventional Science, University College London (UCL), London, UK
| | - Aaron Tan
- Centre for Nanotechnology & Regenerative Medicine, Division of Surgery & Interventional Science, University College London (UCL), London, UK
- UCL Medical School, University College London (UCL), London, UK
- Biomaterials & Advanced Drug Delivery Laboratory, Stanford School of Medicine, Stanford University, Stanford, California, USA
| | - Jayakumar Rajadas
- Biomaterials & Advanced Drug Delivery Laboratory, Stanford School of Medicine, Stanford University, Stanford, California, USA
| | - Brian G Cousins
- Centre for Nanotechnology & Regenerative Medicine, Division of Surgery & Interventional Science, University College London (UCL), London, UK
| | - Alexander M Seifalian
- Centre for Nanotechnology & Regenerative Medicine, Division of Surgery & Interventional Science, University College London (UCL), London, UK
- Royal Free Hospital, London, UK
- NanoRegMed Ltd, London, UK
| |
Collapse
|
14
|
Mitchell A, Fujisawa T, Newby D, Mills N, Cruden NL. Vascular injury and repair: a potential target for cell therapies. Future Cardiol 2015; 11:45-60. [DOI: 10.2217/fca.14.77] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
ABSTRACT Whether due to atherosclerotic disease or mechanical intervention, vascular injury is a frequently encountered pathology in cardiovascular medicine. The past decade has seen growing interest in the role of circulating endothelial progenitor cells in vessel recovery postinjury. Despite this, the definition, origin and potential role of endothelial progenitor cells in vascular regeneration remains highly controversial. While animal work has shown early promise, evidence of a therapeutic role for endothelial progenitor cells in humans remains elusive. To date, clinical trials involving direct cell administration, growth factor therapy and endothelial cell capture stents have largely been disappointing, although this may in part reflect limitations in study design. This article will outline the pathophysiological mechanisms of vascular injury with an emphasis on endothelial progenitor cell biology and the potential therapeutic role of this exciting new field.
Collapse
Affiliation(s)
- Andrew Mitchell
- Centre for Cardiovascular Sciences, University of Edinburgh, Chancellor's Building, 49 Little France Crescent, Edinburgh, EH16 4SB, UK
| | - Takeshi Fujisawa
- Scottish Centre for Regenerative Medicine; Edinburgh Bioquarter; 5 Little France Drive, Edinburgh, UK
| | - David Newby
- Centre for Cardiovascular Sciences, University of Edinburgh, Chancellor's Building, 49 Little France Crescent, Edinburgh, EH16 4SB, UK
| | - Nicholas Mills
- Centre for Cardiovascular Sciences, University of Edinburgh, Chancellor's Building, 49 Little France Crescent, Edinburgh, EH16 4SB, UK
| | - Nicholas L Cruden
- Centre for Cardiovascular Sciences, University of Edinburgh, Chancellor's Building, 49 Little France Crescent, Edinburgh, EH16 4SB, UK
| |
Collapse
|
15
|
Yang Y, Qi P, Ding Y, Maitz MF, Yang Z, Tu Q, Xiong K, Leng Y, Huang N. A biocompatible and functional adhesive amine-rich coating based on dopamine polymerization. J Mater Chem B 2014; 3:72-81. [PMID: 32261927 DOI: 10.1039/c4tb01236d] [Citation(s) in RCA: 73] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Amine groups physiologically play an important role in regulating the growth behavior of cells and they have technological advantages for the conjugation of biomolecules. In this work, we present a method to deposit a copolymerized coating of dopamine and hexamethylendiamine (HD) (PDAM/HD) rich in amine groups onto a target substrate. This method only consists of a simple dip-coating step of the substrate in an aqueous solution consisting of dopamine and HD. Using the technique of PDAM/HD coating, a high density of amine groups of about 30 nmol cm-2 was obtained on the target substrate surface. The PDAM/HD coating showed a high cross-linking degree that is robust enough to resist hydrolysis and swelling. As a vascular stent coating, the PDAM/HD presented good adhesion strength to the substrate and resistance to the deformation behavior of compression and expansion of a stent. Meanwhile, the PDAM/HD coating exhibited good biocompatibility and attenuated the tissue response compared with 316L stainless steel (SS). The primary amine groups of the PDAM/HD coating could be used to effectively immobilize biomolecules containing carboxylic groups such as heparin. These data suggested the promising potential of this PDAM/HD coating for application in the surface modification of biomedical devices.
Collapse
Affiliation(s)
- Ying Yang
- Key Lab. of Advanced Technology for Materials of Education Ministry, Southwest Jiaotong University, Chengdu, 610031, China.
| | | | | | | | | | | | | | | | | |
Collapse
|
16
|
Simona BR, Brunisholz RA, Morhard R, Hunziker P, Vörös J. Coagulation at the blood-electrode interface: the role of electrochemical desorption and degradation of fibrinogen. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2014; 30:7227-7234. [PMID: 24867091 DOI: 10.1021/la500634y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
The influence of electrochemistry on the coagulation of blood on metal surfaces was demonstrated several decades ago. In particular, the application of cathodic currents resulted in reduced surface thrombogenicity, but no molecular mechanism has been so far proposed to explain this observation. In this article we used for the first time the quartz crystal microbalance with dissipation monitoring technique coupled with an electrochemical setup (EQCM-D) to study thrombosis at the blood-electrode interface. We confirmed the reduced thrombus deposition at the cathode, and we subsequently studied the effect of cathodic currents on adsorbed fibrinogen (Fg). Using EQCM and mass spectrometry, we found that upon applying currents Fg desorbed from the electrode and was electrochemically degraded. In particular, we show that the flexible N-terminus of the α-chain, containing an important polymerization site, was cleaved from the protein, thus affecting its clottability. Our work proposes a molecular mechanism that at least partially explains how cathodic currents reduce thrombosis at the blood-electrode interface and is a relevant contribution to the rational development of medical devices with reduced thrombus formation on their surface.
Collapse
Affiliation(s)
- Benjamin R Simona
- Laboratory of Biosensors and Bioelectronics, Institute for Biomedical Engineering, University and ETH Zurich , Gloriastrasse 35, CH-8092 Zurich, Switzerland
| | | | | | | | | |
Collapse
|
17
|
Yang Z, Xiong K, Qi P, Yang Y, Tu Q, Wang J, Huang N. Gallic acid tailoring surface functionalities of plasma-polymerized allylamine-coated 316L SS to selectively direct vascular endothelial and smooth muscle cell fate for enhanced endothelialization. ACS APPLIED MATERIALS & INTERFACES 2014; 6:2647-2656. [PMID: 24484285 DOI: 10.1021/am405124z] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
The creation of a platform for enhanced vascular endothelia cell (VEC) growth while suppressing vascular smooth muscle cell (VSMC) proliferation offers possibility for advanced coatings of vascular stents. Gallic acid (GA), a chemically unique phenolic acid with important biological functions, presents benefits to the cardiovascular disease therapy because of its superior antioxidant effect and a selectivity to support the growth of ECs more than SMCs. In this study, GA was explored to tailor such a multifunctional stent surface combined with plasma polymerization technique. On the basis of the chemical coupling reaction, GA was bound to an amine-group-rich plasma-polymerized allylamine (PPAam) coating. The GA-functionalized PPAam (GA-PPAam) surface created a favorable microenvironment to obtain high ECs and SMCs selectivity. The GA-PPAam coating showed remarkable enhancement in the adhesion, viability, proliferation, migration, and release of nitric oxide (NO) of human umbilical vein endothelial cells (HUVECs). The GA-PPAam coating also resulted in remarkable inhibition effect on human umbilical artery smooth muscle cell (HUASMC) adhesion and proliferation. These striking findings may provide a guide for designing the new generation of multifunctional vascular devices.
Collapse
Affiliation(s)
- Zhilu Yang
- Key Laboratory of Advanced Technology for Materials of Education Ministry, ‡The Institute of Biomaterials and Surface Engineering, School of Materials Science and Engineering, and §Laboratory of Biosensing and MicroMechatronics, Southwest Jiaotong University , Chengdu 610031, China
| | | | | | | | | | | | | |
Collapse
|
18
|
Schernthaner M, Leitinger G, Wolinski H, Kohlwein SD, Reisinger B, Barb RA, Graier WF, Heitz J, Groschner K. Enhanced Ca 2+Entry and Tyrosine Phosphorylation Mediate Nanostructure-Induced Endothelial Proliferation. JOURNAL OF NANOMATERIALS 2013; 2013:251063. [PMID: 24729782 PMCID: PMC3982206 DOI: 10.1155/2013/251063] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Nanostructured substrates have been recognized to initiate transcriptional programs promoting cell proliferation. Specifically β-catenin has been identified as transcriptional regulator, activated by adhesion to nanostructures. We set out to identify processes responsible for nanostructure-induced endothelial β-catenin signaling. Transmission electron microscopy (TEM) of cell contacts to differently sized polyethylene terephthalate (PET) surface structures (ripples with 250 to 300 nm and walls with 1.5 μm periodicity) revealed different patterns of cell-substrate interactions. Cell adhesion to ripples occurred exclusively on ripple peaks, while cells were attached to walls continuously. The Src kinase inhibitor PP2 was active only in cells grown on ripples, while the Abl inhibitors dasatinib and imatinib suppressed β-catenin translocation on both structures. Moreover, Gd3+ sensitive Ca2+ entry was observed in response to mechanical stimulation or Ca2+ store depletion exclusively in cells grown on ripples. Both PP2 and Gd3+ suppressed β-catenin nuclear translocation along with proliferation in cells grown on ripples but not on walls. Our results suggest that adhesion of endothelial cells to ripple structured PET induces highly specific, interface topology-dependent changes in cellular signalling, characterized by promotion of Gd3+ -sensitive Ca2+ entry and Src/Abl activation. We propose that these signaling events are crucially involved in nanostructure-induced promotion of cell proliferation.
Collapse
Affiliation(s)
| | - Gerd Leitinger
- Department of Cell Biology, Histology and Embryology, Core Facility Ultrastructure Analysis, Center for Medical Research, Medical University Graz, 8010 Graz, Austria
| | - Heimo Wolinski
- Institute of Molecular Biosciences, University of Graz, 8010 Graz, Austria
| | - Sepp D. Kohlwein
- Institute of Molecular Biosciences, University of Graz, 8010 Graz, Austria
| | - Bettina Reisinger
- Institute of Applied Physics, Johannes Kepler University Linz, 4040 Linz, Austria
| | - Ruxandra-A. Barb
- Institute of Applied Physics, Johannes Kepler University Linz, 4040 Linz, Austria
| | - Wolfgang F. Graier
- Institute of Molecular Biology and Biochemistry, Medical University Graz, 8010 Graz, Austria
| | - Johannes Heitz
- Institute of Applied Physics, Johannes Kepler University Linz, 4040 Linz, Austria
| | - Klaus Groschner
- Institute of Biophysics, Medical University Graz, 8010 Graz, Austria
| |
Collapse
|
19
|
Abstract
The surgical repair of complex congenital heart defects frequently requires additional tissue in various forms, such as patches, conduits, and valves. These devices often require replacement over a patient's lifetime because of degeneration, calcification, or lack of growth. The main new technologies in congenital cardiac surgery aim at, on the one hand, avoiding such reoperations and, on the other hand, improving long-term outcomes of devices used to repair or replace diseased structural malformations. These technologies are: 1) new patches: CorMatrix® patches made of decellularized porcine small intestinal submucosa extracellular matrix; 2) new devices: the Melody® valve (for percutaneous pulmonary valve implantation) and tissue-engineered valved conduits (either decellularized scaffolds or polymeric scaffolds); and 3) new emerging fields, such as antenatal corrective cardiac surgery or robotically assisted congenital cardiac surgical procedures. These new technologies for structural malformation surgery are still in their infancy but certainly present great promise for the future. But the translation of these emerging technologies to routine health care and public health policy will also largely depend on economic considerations, value judgments, and political factors.
Collapse
Affiliation(s)
- David Kalfa
- Pediatric Cardiac Surgery, Columbia University, Morgan Stanley Children's Hospital of New York-Presbyterian, New York, USA
| | | |
Collapse
|
20
|
Iqbal J, Gunn J, Serruys PW. Coronary stents: historical development, current status and future directions. Br Med Bull 2013; 106:193-211. [PMID: 23532779 DOI: 10.1093/bmb/ldt009] [Citation(s) in RCA: 174] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
INTRODUCTION Coronary angioplasty with stenting has revolutionized the treatment of coronary artery disease. This article describes the history of coronary angioplasty and stenting, reviews the contemporary stents and recommendations and highlights the on-going work and potential future directions. SOURCES OF DATA This review examined the data on coronary stents available in PubMed. AREAS OF AGREEMENT Coronary artery stenting is the treatment of choice for patients requiring coronary angioplasty. Stents, and particularly drug-eluting stents, reduce the risk of restenosis, but may be associated with the hazard of late stent thrombosis. Dual anti-platelet treatment is recommended for patients receiving coronary stents. AREAS OF CONTROVERSY The selection of stents for various lesions and patients and the duration of anti-platelet therapy remain debated areas. AREAS TIMELY FOR DEVELOPING RESEARCH There are on-going preclinical and clinical studies to develop better stent platforms, more biocompatible polymers, novel anti-proliferative and anti-platelet drugs, pro-healing stents and bioresorbable scaffolds.
Collapse
Affiliation(s)
- Javaid Iqbal
- Thorax Centre, Erasmus Medical Centre, Rotterdam, The Netherlands.
| | | | | |
Collapse
|