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Łopianiak I, Wojasiński M, Kuźmińska A, Trzaskowska P, Butruk-Raszeja BA. The effect of surface morphology on endothelial and smooth muscle cells growth on blow-spun fibrous scaffolds. J Biol Eng 2021; 15:27. [PMID: 34924005 PMCID: PMC8684665 DOI: 10.1186/s13036-021-00278-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2021] [Accepted: 11/14/2021] [Indexed: 11/23/2022] Open
Abstract
This study aimed to analyze the growth of two types of blood vessel building cells: endothelial cells (ECs) and smooth muscle cells (SMCs) on surfaces with different morphology. Two types of materials, differing in morphology, were produced by the solution blow spinning technique. One-layer materials consisted of one fibrous layer with two fibrous surfaces. Bi-layer materials consisted of one fibrous-solid layer and one fibrous layer, resulting in two different surfaces. Additionally, materials with different average fiber diameters (about 200, 500, and 900 nm) were produced for each group. It has been shown that it is possible to obtain structures with a given morphology by changing the selected process parameters (working distance and polymer solution concentration). Both morphology (solid versus fibrous) and average fiber diameter (submicron fibers versus microfibers) of scaffolds influenced the growth of ECs. However, this effect was only visible after an extended period of culture (6 days). In the case of SMCs, it was proved that the best growth of SMCs is obtained for micron fibers (with an average diameter close to 900 nm) compared to the submicron fibers (with an average diameter below 900 nm).
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Affiliation(s)
- Iwona Łopianiak
- Laboratory of Biomedical Engineering, Faculty of Chemical and Process Engineering, Warsaw University of Technology, Waryńskiego 1, 00-645, Warsaw, Poland
| | - Michał Wojasiński
- Laboratory of Biomedical Engineering, Faculty of Chemical and Process Engineering, Warsaw University of Technology, Waryńskiego 1, 00-645, Warsaw, Poland
| | - Aleksandra Kuźmińska
- Laboratory of Biomedical Engineering, Faculty of Chemical and Process Engineering, Warsaw University of Technology, Waryńskiego 1, 00-645, Warsaw, Poland
| | - Paulina Trzaskowska
- Centre for Advanced Materials and Technologies CEZAMAT, Warsaw University of Technology, Poleczki 19, 02-822, Warsaw, Poland
| | - Beata A Butruk-Raszeja
- Laboratory of Biomedical Engineering, Faculty of Chemical and Process Engineering, Warsaw University of Technology, Waryńskiego 1, 00-645, Warsaw, Poland.
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Fabrication and in-vitro characterization of a polymeric aortic valve for minimally invasive valve replacement. J Mech Behav Biomed Mater 2020; 115:104294. [PMID: 33383376 DOI: 10.1016/j.jmbbm.2020.104294] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2020] [Revised: 12/17/2020] [Accepted: 12/21/2020] [Indexed: 01/25/2023]
Abstract
The valve replacement therapy is the standard treatment for severe heart valve diseases. Nowadays, two types of commercial prosthesis are available: mechanical and biological, but both of them have severe limitations. Moreover, alternative therapeutic approach for valve replacement, based on minimally invasive techniques (MIAVR), motivates the search for new valve materials. In this study a polyurethane-based self-expandable tri-leaflets heart valve compatible with MIAVR procedure is proposed. The device is based on the development, fabrication and characterization of three different elements: the leaflets, the polymeric stent for supporting the leaflets, and the external metallic stent for anchoring the valve to the native aortic root. The polymeric stent and the valve leaflets were fabricated using a thermoplastic silicone-polycarbonate-urethane using 3D printing and spray technology while the external metallic stent was made in nickel titanium (Nitinol) to obtain a self-expandable valve after the crimping process. The three elements were assembled in the completed device and tested by crimping, fatigue and fluid-dynamic test. The novel polymeric valve proposed showed promising results about valve crimping capabilities, durability and fluid dynamic performances. This approach could offer advantages such as low cost and to produce a tailor-made device basing on patient's imaging data. Moreover, the selected biomaterial offers the potential to have a device that could need of permanent anticoagulation and lack of calcification.
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A New Method for Fibrin-Based Electrospun/Sprayed Scaffold Fabrication. Sci Rep 2020; 10:5111. [PMID: 32198419 PMCID: PMC7083959 DOI: 10.1038/s41598-020-61933-z] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2019] [Accepted: 01/06/2020] [Indexed: 11/23/2022] Open
Abstract
Fibrin is an optimal scaffold for tissue-engineering applications because it mimics the extracellular matrix. Despite this interesting feature, fibrin gel owns only poor mechanical properties that limit its applications. Different approaches have been used for fibrin electrospinning, however all the methods investigated required washing steps, cross-linking agent treatment or immersion. The aim of this work was to produce a bilayered fibrin/polyurethane scaffold by combination of the electrospun method and the spray, phase-inversion method for the preparation of a fibrin nanostructured layer to be attached onto a poly(ether)urethane microporous support layer. The synthetic layer was obtained by the spray, phase-inversion technique onto a rotating metallic collector, while fibrinogen was processed to obtain a nanofibrous structure by electrospinning. Finally, fibrin polymerization was obtained by thrombin solution spraying onto the electrospun nanofibers. SEM analysis showed the formation of filamentous structure with diameter in the range of μm attached onto the synthetic layer. This scaffold could be applied in soft tissue regeneration such as wound healing or as drug delivery system.
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Chiu YC, Shen YF, Lee AKX, Lin SH, Wu YC, Chen YW. 3D Printing of Amino Resin-based Photosensitive Materials on Multi-parameter Optimization Design for Vascular Engineering Applications. Polymers (Basel) 2019; 11:E1394. [PMID: 31450605 PMCID: PMC6780824 DOI: 10.3390/polym11091394] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2019] [Revised: 08/18/2019] [Accepted: 08/23/2019] [Indexed: 12/19/2022] Open
Abstract
Cardiovascular diseases are currently the most common cause of death globally and of which, the golden treatment method for severe cardiovascular diseases or coronary artery diseases are implantations of synthetic vascular grafts. However, such grafts often come with rejections and hypersensitivity reactions. With the emergence of regenerative medicine, researchers are now trying to explore alternative ways to produce grafts that are less likely to induce immunological reactions in patients. The main goal of such studies is to produce biocompatible artificial vascular grafts with the capability of allowing cellular adhesion and cellular proliferation for tissues regeneration. The Design of Experimental concepts is employed into the manufacturing process of digital light processing (DLP) 3D printing technology to explore near-optimal processing parameters to produce artificial vascular grafts with vascular characteristics that are close to native vessels by assessing for the cause and effect relationships between different ratios of amino resin (AR), 2-hydroxyethyl methacrylate (HEMA), dopamine, and curing durations. We found that with proper optimization of fabrication procedures and ratios of materials, we are able to successfully fabricate vascular grafts with good printing resolutions. These had similar physical properties to native vessels and were able to support cellular adhesion and proliferation. This study could support future studies in exploring near-optimal processes for fabrication of artificial vascular grafts that could be adapted into clinical applications.
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Affiliation(s)
- Yung-Cheng Chiu
- School of Medicine, China Medical University, Taichung 40447, Taiwan
- Department of Orthopedic Surgery, China Medical University Hospital, Taichung 40447, Taiwan
| | - Yu-Fang Shen
- Department of Bioinformatics and Medical Engineering, Asia University, Taichung 40447, Taiwan
- 3D Printing Medical Research Institute, Asia University, Taichung 40447, Taiwan
| | - Alvin Kai-Xing Lee
- School of Medicine, China Medical University, Taichung 40447, Taiwan
- 3D Printing Medical Research Center, China Medical University Hospital, Taichung 40447, Taiwan
| | - Shu-Hsien Lin
- 3D Printing Medical Research Center, China Medical University Hospital, Taichung 40447, Taiwan
| | - Yu-Chen Wu
- 3D Printing Medical Research Center, China Medical University Hospital, Taichung 40447, Taiwan
| | - Yi-Wen Chen
- 3D Printing Medical Research Center, China Medical University Hospital, Taichung 40447, Taiwan.
- Graduate Institute of Biomedical Sciences, China Medical University, Taichung 40447, Taiwan.
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Tresoldi C, Pacheco DP, Formenti E, Pellegata AF, Mantero S, Petrini P. Shear-resistant hydrogels to control permeability of porous tubular scaffolds in vascular tissue engineering. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2019; 105:110035. [PMID: 31546369 DOI: 10.1016/j.msec.2019.110035] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/24/2018] [Revised: 06/18/2019] [Accepted: 07/29/2019] [Indexed: 12/13/2022]
Abstract
Aiming to perfuse porous tubular scaffolds for vascular tissue engineering (VTE) with controlled flow rate, prevention of leakage through the scaffold lumen is required. A gel coating made of 8% w/v alginate and 6% w/v gelatin functionalized with fibronectin was produced using a custom-made bioreactor-based method. Different volumetric proportions of alginate and gelatin were tested (50/50, 70/30, and 90/10). Gel swelling and stability, and rheological, and uniaxial tensile tests reveal superior resistance to the aggressive biochemical microenvironment, and their ability to withstand physiological deformations (~10%) and wall shear stresses (5-20 dyne/cm2). These are prerequisites to maintain the physiologic phenotypes of vascular smooth muscle cells and endothelial cells (ECs), mimicking blood vessels microenvironment. Gels can induce ECs proliferation and colonization, especially in the presence of fibronectin and higher percentages of gelatin. The custom-designed bioreactor enables the development of reproducible and homogeneous tubular gel coating. The permeability tests show the effectiveness of tubular scaffolds coated with 70/30 alginate/gelatin gel to occlude wadding pores, and therefore prevent leakages. The synthesized double-layered tubular scaffolds coated with alginate/gelatin gel and fibronectin represent both promising substrate for ECs and effective leakproof scaffolds, when subjected to pulsatile perfusion, for VTE applications.
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Affiliation(s)
- Claudia Tresoldi
- Dipartimento di Chimica, Materiali e Ingegneria Chimica, 'G. Natta' Politecnico di Milano, Piazza L. da Vinci, Milano, Italy
| | - Daniela P Pacheco
- Dipartimento di Chimica, Materiali e Ingegneria Chimica, 'G. Natta' Politecnico di Milano, Piazza L. da Vinci, Milano, Italy
| | - Elisa Formenti
- Dipartimento di Chimica, Materiali e Ingegneria Chimica, 'G. Natta' Politecnico di Milano, Piazza L. da Vinci, Milano, Italy
| | - Alessandro Filippo Pellegata
- Dipartimento di Chimica, Materiali e Ingegneria Chimica, 'G. Natta' Politecnico di Milano, Piazza L. da Vinci, Milano, Italy
| | - Sara Mantero
- Dipartimento di Chimica, Materiali e Ingegneria Chimica, 'G. Natta' Politecnico di Milano, Piazza L. da Vinci, Milano, Italy.
| | - Paola Petrini
- Dipartimento di Chimica, Materiali e Ingegneria Chimica, 'G. Natta' Politecnico di Milano, Piazza L. da Vinci, Milano, Italy
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Goins A, Webb AR, Allen JB. Multi-layer approaches to scaffold-based small diameter vessel engineering: A review. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2019; 97:896-912. [DOI: 10.1016/j.msec.2018.12.067] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/12/2018] [Revised: 12/11/2018] [Accepted: 12/20/2018] [Indexed: 12/28/2022]
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Gong W, Lei D, Li S, Huang P, Qi Q, Sun Y, Zhang Y, Wang Z, You Z, Ye X, Zhao Q. Hybrid small-diameter vascular grafts: Anti-expansion effect of electrospun poly ε-caprolactone on heparin-coated decellularized matrices. Biomaterials 2015; 76:359-70. [PMID: 26561933 DOI: 10.1016/j.biomaterials.2015.10.066] [Citation(s) in RCA: 115] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2015] [Revised: 10/20/2015] [Accepted: 10/26/2015] [Indexed: 12/20/2022]
Abstract
Small-diameter vascular grafts (SDVGs) (D < 6 mm) are increasingly needed in clinical settings for cardiovascular disease, including coronary artery and peripheral vascular pathologies. Vessels made from synthetic polymers have shortcomings such as thrombosis, intimal hyperplasia, calcification, chronic inflammation and no growth potential. Decellularized xenografts are commonly used as a tissue-engineering substitute for vascular reconstructive procedures. Although acellular allogeneic vascular grafts have good histocompatibility and antithrombotic properties, the decellularization process may damage the biomechanics and accelerate the elastin deformation and degradation, finally resulting in vascular graft expansion and even aneurysm formation. Here, to address these problems, we combine synthetic polymers with natural decellularized small-diameter vessels to fabricate hybrid tissue-engineered vascular grafts (HTEV). The donor aortic vessels were decellularized with a combination of different detergents and dehydrated under a vacuum freeze-drying process. Polycaprolactone (PCL) nanofibers were electrospun (ES) outside the acellular aortic vascular grafts to strengthen the decellularized matrix. The intimal surfaces of the hybrid small-diameter vascular grafts were coated with heparin before the allograft transplantation. Histopathology and scanning electron microscope revealed that the media of the decellularized vessels were severely injured. Mechanical testing of scaffolds showed that ES-PCL significantly enhanced the biomechanics of decellularized vessels. Vascular ultrasound and micro-CT angiography showed that all grafts after implantation in a rat model were satisfactorily patent for up to 6 weeks. ES-PCL successfully prevented the occurrence of vasodilation and aneurysm formation after transplantation and reduced the cell inflammatory infiltration. In conclusion, the HTEV with perfect histocompatibility and biomechanics provide a facile and useful technique for the development of SDVGs.
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Affiliation(s)
- Wenhui Gong
- Department of Cardiac Surgery, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, PR China
| | - Dong Lei
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai, PR China
| | - Sen Li
- Department of Cardiac Surgery, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, PR China
| | - Peng Huang
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai, PR China
| | - Quan Qi
- Department of Cardiac Surgery, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, PR China
| | - Yijun Sun
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai, PR China
| | - Yijie Zhang
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai, PR China
| | - Zhe Wang
- Department of Cardiac Surgery, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, PR China
| | - Zhengwei You
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai, PR China.
| | - Xiaofeng Ye
- Department of Cardiac Surgery, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, PR China.
| | - Qiang Zhao
- Department of Cardiac Surgery, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, PR China.
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