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Patel R, Gómez-Cerezo MN, Huang H, Grøndahl L, Lu M. Degradation behaviour of porous poly(hydroxybutyrate-co-hydroxyvalerate) (PHBV) scaffolds in cell culture. Int J Biol Macromol 2024; 257:128644. [PMID: 38065444 DOI: 10.1016/j.ijbiomac.2023.128644] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2023] [Revised: 11/16/2023] [Accepted: 12/04/2023] [Indexed: 01/27/2024]
Abstract
Exploring the degradation behaviour of biomaterials in a complex in vitro physiological environment can assist in predicting their performance in vivo, yet this aspect remains largely unexplored. In this study, the in vitro degradation over 12 weeks of porous poly(hydroxybutyrate-co-hydroxyvalerate) (PHBV) bone scaffolds in human osteoblast (hOB) culture was investigated. The objective was to evaluate how the presence of cells influenced both the degradation behaviour and mechanical stability of these scaffolds. The molecular weight (Mw) of the scaffolds decreased with increasing incubation time and the Mw reduction rate (6.2 ± 0.4 kg mol-1 week-1) was similar to that observed when incubated in phosphate buffered saline (PBS) solution, implying that the scaffolds underwent hydrolytic degradation in hOB culture. The mass of the scaffolds increased by 0.8 ± 0.2 % in the first 4 weeks, attributed to cells attachment and extracellular matrix (ECM) deposition including biomineralisation. During the first 8 weeks, the nominal compressive modulus, E⁎, of the scaffolds remained constant. However, it increased significantly from Week 8 to 12, with increments of 55 % and 42 % in normal and lateral directions, respectively, attributed to the reinforcement effect of cells, ECM and minerals attached on the surface of the scaffold. This study has highlighted, that while the use of PBS in degradation studies is suitable for evaluating Mw changes it cannot predict changes in mechanical properties to PHBV scaffolds in the presence of cells and culture media. Furthermore, the PHBV scaffolds had mechanical stability in cell culture for 12 weeks validating their suitability for tissue engineering applications.
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Affiliation(s)
- Rushabh Patel
- School of Mechanical and Mining Engineering, The University of Queensland, St Lucia, QLD 4072, Australia
| | - Maria Natividad Gómez-Cerezo
- Departamento de Química en Ciencias Farmacéuticas, Facultad de Farmacia, Universidad Complutense de Madrid, Instituto de Investigación Sanitaria Hospital, 12 de Octubre i+12, Plaza Ramón y Cajal s/n, 28040 Madrid, Spain
| | - Han Huang
- School of Mechanical and Mining Engineering, The University of Queensland, St Lucia, QLD 4072, Australia
| | - Lisbeth Grøndahl
- School of Chemistry and Molecular Biosciences, The University of Queensland, St Lucia, QLD 4072, Australia
| | - Mingyuan Lu
- School of Mechanical and Mining Engineering, The University of Queensland, St Lucia, QLD 4072, Australia.
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Zhu W, Li W, Yao M, Wang Y, Zhang W, Li C, Wang X, Chen W, Lv H. Mineralized Collagen/Polylactic Acid Composite Scaffolds for Load-Bearing Bone Regeneration in a Developmental Model. Polymers (Basel) 2023; 15:4194. [PMID: 37896438 PMCID: PMC10610794 DOI: 10.3390/polym15204194] [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: 08/04/2023] [Revised: 09/23/2023] [Accepted: 10/18/2023] [Indexed: 10/29/2023] Open
Abstract
Repairing load-bearing bone defects in children remains a big clinical challenge. Mineralized collagen (MC) can effectively simulate natural bone composition and hierarchical structure and has a good biocompatibility and bone conductivity. Polylactic acid (PLA) is regarded as a gold material because of its mechanical properties and degradability. In this study, we prepare MC/PLA composite scaffolds via in situ mineralization and freeze-drying. Cell, characterization, and animal experiments compare and evaluate the biomimetic properties and repair effects of the MC/PLA scaffolds. Phalloidin and DAPI staining results show that the MC/PLA scaffolds are not cytotoxic. CCK-8 and scratch experiments prove that the scaffolds are superior to MC and hydroxyapatite (HA)/PLA scaffolds in promoting cell proliferation and migration. The surface and interior of the MC/PLA scaffolds exhibit rich interconnected pore structures with a porosity of ≥70%. The XRD patterns are typical HA waveforms. X-ray, micro-CT, and H&E staining reveal that the defect boundary disappears, new bone tissue grows into MC/PLA scaffolds in a large area, and the scaffolds are degraded after six months of implantation. The MC/PLA composite scaffold has a pore structure and composition similar to cancellous bone, with a good biocompatibility and bone regeneration ability.
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Affiliation(s)
- Wenbo Zhu
- Department of Orthopaedic Surgery, Hebei Medical University Third Hospital, No. 139 Ziqiang Road, Shijiazhuang 050051, China; (W.Z.); (W.L.); (M.Y.); (Y.W.); (C.L.)
- Key Laboratory of Biomechanics of Hebei Province, Orthopaedic Research Institution of Hebei Province, No. 139 Ziqiang Road, Shijiazhuang 050051, China
- National Health Commission Key Laboratory of Intelligent Orthopaedic Equipment, Hebei Medical University Third Hospital, No. 139 Ziqiang Road, Shijiazhuang 050051, China
| | - Wenjing Li
- Department of Orthopaedic Surgery, Hebei Medical University Third Hospital, No. 139 Ziqiang Road, Shijiazhuang 050051, China; (W.Z.); (W.L.); (M.Y.); (Y.W.); (C.L.)
- Key Laboratory of Biomechanics of Hebei Province, Orthopaedic Research Institution of Hebei Province, No. 139 Ziqiang Road, Shijiazhuang 050051, China
- National Health Commission Key Laboratory of Intelligent Orthopaedic Equipment, Hebei Medical University Third Hospital, No. 139 Ziqiang Road, Shijiazhuang 050051, China
| | - Mengxuan Yao
- Department of Orthopaedic Surgery, Hebei Medical University Third Hospital, No. 139 Ziqiang Road, Shijiazhuang 050051, China; (W.Z.); (W.L.); (M.Y.); (Y.W.); (C.L.)
- Key Laboratory of Biomechanics of Hebei Province, Orthopaedic Research Institution of Hebei Province, No. 139 Ziqiang Road, Shijiazhuang 050051, China
- National Health Commission Key Laboratory of Intelligent Orthopaedic Equipment, Hebei Medical University Third Hospital, No. 139 Ziqiang Road, Shijiazhuang 050051, China
| | - Yan Wang
- Department of Orthopaedic Surgery, Hebei Medical University Third Hospital, No. 139 Ziqiang Road, Shijiazhuang 050051, China; (W.Z.); (W.L.); (M.Y.); (Y.W.); (C.L.)
- Key Laboratory of Biomechanics of Hebei Province, Orthopaedic Research Institution of Hebei Province, No. 139 Ziqiang Road, Shijiazhuang 050051, China
- National Health Commission Key Laboratory of Intelligent Orthopaedic Equipment, Hebei Medical University Third Hospital, No. 139 Ziqiang Road, Shijiazhuang 050051, China
| | - Wei Zhang
- Department of Pathology, Hebei Medical University, No. 361 Zhongshan Road, Shijiazhuang 050017, China;
| | - Chao Li
- Department of Orthopaedic Surgery, Hebei Medical University Third Hospital, No. 139 Ziqiang Road, Shijiazhuang 050051, China; (W.Z.); (W.L.); (M.Y.); (Y.W.); (C.L.)
- Key Laboratory of Biomechanics of Hebei Province, Orthopaedic Research Institution of Hebei Province, No. 139 Ziqiang Road, Shijiazhuang 050051, China
- National Health Commission Key Laboratory of Intelligent Orthopaedic Equipment, Hebei Medical University Third Hospital, No. 139 Ziqiang Road, Shijiazhuang 050051, China
| | - Xiumei Wang
- State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, No. 30 Shuangqing Road, Beijing 100084, China;
| | - Wei Chen
- Department of Orthopaedic Surgery, Hebei Medical University Third Hospital, No. 139 Ziqiang Road, Shijiazhuang 050051, China; (W.Z.); (W.L.); (M.Y.); (Y.W.); (C.L.)
- Key Laboratory of Biomechanics of Hebei Province, Orthopaedic Research Institution of Hebei Province, No. 139 Ziqiang Road, Shijiazhuang 050051, China
- National Health Commission Key Laboratory of Intelligent Orthopaedic Equipment, Hebei Medical University Third Hospital, No. 139 Ziqiang Road, Shijiazhuang 050051, China
| | - Hongzhi Lv
- Department of Orthopaedic Surgery, Hebei Medical University Third Hospital, No. 139 Ziqiang Road, Shijiazhuang 050051, China; (W.Z.); (W.L.); (M.Y.); (Y.W.); (C.L.)
- Key Laboratory of Biomechanics of Hebei Province, Orthopaedic Research Institution of Hebei Province, No. 139 Ziqiang Road, Shijiazhuang 050051, China
- National Health Commission Key Laboratory of Intelligent Orthopaedic Equipment, Hebei Medical University Third Hospital, No. 139 Ziqiang Road, Shijiazhuang 050051, China
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Lutter G, Puehler T, Cyganek L, Seiler J, Rogler A, Herberth T, Knueppel P, Gorb SN, Sathananthan J, Sellers S, Müller OJ, Frank D, Haben I. Biodegradable Poly-ε-Caprolactone Scaffolds with ECFCs and iMSCs for Tissue-Engineered Heart Valves. Int J Mol Sci 2022; 23:527. [PMID: 35008953 PMCID: PMC8745109 DOI: 10.3390/ijms23010527] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2021] [Revised: 12/27/2021] [Accepted: 12/28/2021] [Indexed: 12/16/2022] Open
Abstract
Clinically used heart valve prostheses, despite their progress, are still associated with limitations. Biodegradable poly-ε-caprolactone (PCL) nanofiber scaffolds, as a matrix, were seeded with human endothelial colony-forming cells (ECFCs) and human induced-pluripotent stem cells-derived MSCs (iMSCs) for the generation of tissue-engineered heart valves. Cell adhesion, proliferation, and distribution, as well as the effects of coating PCL nanofibers, were analyzed by fluorescence microscopy and SEM. Mechanical properties of seeded PCL scaffolds were investigated under uniaxial loading. iPSCs were used to differentiate into iMSCs via mesoderm. The obtained iMSCs exhibited a comparable phenotype and surface marker expression to adult human MSCs and were capable of multilineage differentiation. EFCFs and MSCs showed good adhesion and distribution on PCL fibers, forming a closed cell cover. Coating of the fibers resulted in an increased cell number only at an early time point; from day 7 of colonization, there was no difference between cell numbers on coated and uncoated PCL fibers. The mechanical properties of PCL scaffolds under uniaxial loading were compared with native porcine pulmonary valve leaflets. The Young's modulus and mean elongation at Fmax of unseeded PCL scaffolds were comparable to those of native leaflets (p = ns.). Colonization of PCL scaffolds with human ECFCs or iMSCs did not alter these properties (p = ns.). However, the native heart valves exhibited a maximum tensile stress at a force of 1.2 ± 0.5 N, whereas it was lower in the unseeded PCL scaffolds (0.6 ± 0.0 N, p < 0.05). A closed cell layer on PCL tissues did not change the values of Fmax (ECFCs: 0.6 ± 0.1 N; iMSCs: 0.7 ± 0.1 N). Here, a successful two-phase protocol, based on the timed use of differentiation factors for efficient differentiation of human iPSCs into iMSCs, was developed. Furthermore, we demonstrated the successful colonization of a biodegradable PCL nanofiber matrix with human ECFCs and iMSCs suitable for the generation of tissue-engineered heart valves. A closed cell cover was already evident after 14 days for ECFCs and 21 days for MSCs. The PCL tissue did not show major mechanical differences compared to native heart valves, which was not altered by short-term surface colonization with human cells in the absence of an extracellular matrix.
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Affiliation(s)
- Georg Lutter
- Department of Cardiovascular Surgery, University Hospital Schleswig-Holstein (UKSH), 24105 Kiel, Germany; (T.P.); (J.S.); (A.R.); (T.H.); (P.K.); (I.H.)
- German Centre for Cardiovascular Research (DZHK), Partner Site Hamburg/Kiel/Lübeck, 20251 Hamburg, Germany; (O.J.M.); (D.F.)
| | - Thomas Puehler
- Department of Cardiovascular Surgery, University Hospital Schleswig-Holstein (UKSH), 24105 Kiel, Germany; (T.P.); (J.S.); (A.R.); (T.H.); (P.K.); (I.H.)
- German Centre for Cardiovascular Research (DZHK), Partner Site Hamburg/Kiel/Lübeck, 20251 Hamburg, Germany; (O.J.M.); (D.F.)
| | - Lukas Cyganek
- Stem Cell Unit, Clinic for Cardiology and Pneumology, University Medical Center Göttingen, 37075 Göttingen, Germany;
- German Center for Cardiovascular Research (DZHK), Partner Site Göttingen, 37075 Göttingen, Germany
| | - Jette Seiler
- Department of Cardiovascular Surgery, University Hospital Schleswig-Holstein (UKSH), 24105 Kiel, Germany; (T.P.); (J.S.); (A.R.); (T.H.); (P.K.); (I.H.)
- German Centre for Cardiovascular Research (DZHK), Partner Site Hamburg/Kiel/Lübeck, 20251 Hamburg, Germany; (O.J.M.); (D.F.)
| | - Anita Rogler
- Department of Cardiovascular Surgery, University Hospital Schleswig-Holstein (UKSH), 24105 Kiel, Germany; (T.P.); (J.S.); (A.R.); (T.H.); (P.K.); (I.H.)
| | - Tanja Herberth
- Department of Cardiovascular Surgery, University Hospital Schleswig-Holstein (UKSH), 24105 Kiel, Germany; (T.P.); (J.S.); (A.R.); (T.H.); (P.K.); (I.H.)
| | - Philipp Knueppel
- Department of Cardiovascular Surgery, University Hospital Schleswig-Holstein (UKSH), 24105 Kiel, Germany; (T.P.); (J.S.); (A.R.); (T.H.); (P.K.); (I.H.)
| | - Stanislav N. Gorb
- Department of Functional Morphology and Biomechanics, Zoological Institute, Christian-Albrechts-University of Kiel, 24105 Kiel, Germany;
| | - Janarthanan Sathananthan
- Department of Centre for Heart Valve Innovation, St Paul’s Hospital, University of British Columbia, Vancouver, BC V6T 174, Canada; (J.S.); (S.S.)
| | - Stephanie Sellers
- Department of Centre for Heart Valve Innovation, St Paul’s Hospital, University of British Columbia, Vancouver, BC V6T 174, Canada; (J.S.); (S.S.)
| | - Oliver J. Müller
- German Centre for Cardiovascular Research (DZHK), Partner Site Hamburg/Kiel/Lübeck, 20251 Hamburg, Germany; (O.J.M.); (D.F.)
- Department of Cardiology and Angiology, University Hospital Schleswig-Holstein (UKSH), 24105 Kiel, Germany
| | - Derk Frank
- German Centre for Cardiovascular Research (DZHK), Partner Site Hamburg/Kiel/Lübeck, 20251 Hamburg, Germany; (O.J.M.); (D.F.)
- Department of Cardiology and Angiology, University Hospital Schleswig-Holstein (UKSH), 24105 Kiel, Germany
| | - Irma Haben
- Department of Cardiovascular Surgery, University Hospital Schleswig-Holstein (UKSH), 24105 Kiel, Germany; (T.P.); (J.S.); (A.R.); (T.H.); (P.K.); (I.H.)
- German Centre for Cardiovascular Research (DZHK), Partner Site Hamburg/Kiel/Lübeck, 20251 Hamburg, Germany; (O.J.M.); (D.F.)
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Guo W, Yang K, Qin X, Luo R, Wang H, Huang R. Polyhydroxyalkanoates in tissue repair and regeneration. ENGINEERED REGENERATION 2022. [DOI: 10.1016/j.engreg.2022.01.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
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5
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Li B, Wang S, Zhao Y, Wang X. [The latest study on biomimetic mineralized collagen-based bone materials for pediatric skull regeneration and repair]. ZHONGGUO XIU FU CHONG JIAN WAI KE ZA ZHI = ZHONGGUO XIUFU CHONGJIAN WAIKE ZAZHI = CHINESE JOURNAL OF REPARATIVE AND RECONSTRUCTIVE SURGERY 2021; 35:278-285. [PMID: 33719234 DOI: 10.7507/1002-1892.202009078] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
As a worldwide challenge in the field of neurosurgery, there is no effective treatment method for pediatric skull defects repair in clinic. Currently clinical used cranioplasty materials couldn't undergo adjustment in response to skull growth and deformation. An ideal material for pediatric cranioplasty should fulfill the requirements of achieving complete closure, good osseointegration, biodegradability and conformability, sufficient cerebral protection and optimal aesthetic, and functional restoration of calvaria. Biomimetic mineralized collagen-based bone material is a kind of material that simulates the microstructural unit of natural bone on the nanometer scale. Because of its high osteogenic activity, it is widely used in repair of all kinds of bone defects. Recently, the biomimetic mineralized collagen-based bone materials have successfully been applied for cranial regeneration and repair with satisfactory results. This review mainly introduces the characteristics of the biomimetic mineralized collagen-based bone materials, the advantages for the repair of pediatric skull defects, and the related progresses.
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Affiliation(s)
- Bo Li
- State Key Laboratory of New Ceramics and Fine Processing, Key Laboratory of Advanced Materials, School of Materials Science and Engineering, Tsinghua University, Beijing, 100084, P.R.China
| | | | - Yonggang Zhao
- State Key Laboratory of New Ceramics and Fine Processing, Key Laboratory of Advanced Materials, School of Materials Science and Engineering, Tsinghua University, Beijing, 100084, P.R.China
| | - Xiumei Wang
- State Key Laboratory of New Ceramics and Fine Processing, Key Laboratory of Advanced Materials, School of Materials Science and Engineering, Tsinghua University, Beijing, 100084, P.R.China
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6
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D'Amore A, Luketich SK, Hoff R, Ye SH, Wagner WR. Blending Polymer Labile Elements at Differing Scales to Affect Degradation Profiles in Heart Valve Scaffolds. Biomacromolecules 2019; 20:2494-2505. [PMID: 31083976 DOI: 10.1021/acs.biomac.9b00189] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
After more than 22 years of research challenges and innovation, the heart valve tissue engineering paradigm still attracts attention as an approach to overcome limitations which exist with clinically utilized mechanical or bioprosthetic heart valves. Despite encouraging results, delayed translation can be attributed to limited knowledge on the concurrent mechanisms of biomaterial degradation in vivo, host inflammatory response, cell recruitment, and de novo tissue elaboration. This study aimed to reduce this gap by evaluating three alternative levels at which lability could be incorporated into candidate polyurethane materials electroprocessed into a valve scaffold. Specifically, polyester and polycarbonate labile soft segment diols were reacted into thermoplastic elastomeric polyurethane ureas that formed scaffolds where (1) a single polyurethane containing both of the two diols in the polymer backbone was synthesized and processed, (2) two polyurethanes were physically blended, one with exclusively polycarbonate and one with exclusively polyester diols, followed by processing of the blend, and (3) the two polyurethane types were concurrently processed to form individual fiber populations in a valve scaffold. The resulting valve scaffolds were characterized in terms of their mechanics before and after exposure to varying periods of pulsatile flow in an enzymatic (lipase) buffer solution. The results showed that valve scaffolds made from the first type of polymer and processing combination experienced more extensive degradation. This approach, although demonstrated with polyurethane scaffolds, can generally be translated to investigate biomaterial approaches where labile elements are introduced at different structural levels to alter degradation properties while largely preserving the overall chemical composition and initial mechanical behavior.
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Bazan O, Simbara MMO, Ortiz JP, Malmonge SM, Andrade A, Yanagihara JI. In Vitro Hydrodynamic Evaluation of a Scaffold for Heart Valve Tissue Engineering. Artif Organs 2018; 43:195-198. [DOI: 10.1111/aor.13293] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2018] [Revised: 04/27/2018] [Accepted: 05/07/2018] [Indexed: 12/22/2022]
Affiliation(s)
- Ovandir Bazan
- Department of Mechanical EngineeringUniversity of São Paulo, Polytechnic School São Paulo Brazil
| | - Márcia M. O. Simbara
- Department of Mechanical EngineeringUniversity of São Paulo, Polytechnic School São Paulo Brazil
| | - Jayme P. Ortiz
- Department of Mechanical EngineeringUniversity of São Paulo, Polytechnic School São Paulo Brazil
| | - Sonia M. Malmonge
- Department of Mechanical EngineeringUniversity of São Paulo, Polytechnic School São Paulo Brazil
| | - Aron Andrade
- Department of Mechanical EngineeringUniversity of São Paulo, Polytechnic School São Paulo Brazil
| | - Jurandir I. Yanagihara
- Department of Mechanical EngineeringUniversity of São Paulo, Polytechnic School São Paulo Brazil
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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.
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Affiliation(s)
- Rosaria Santoro
- Unità di Ingegneria Tissutale Cardiovascolare, Centro Cardiologico Monzino, IRCCS, Milan, Italy.
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Nachlas ALY, Li S, Davis ME. Developing a Clinically Relevant Tissue Engineered Heart Valve-A Review of Current Approaches. Adv Healthc Mater 2017; 6. [PMID: 29171921 DOI: 10.1002/adhm.201700918] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2017] [Revised: 09/25/2017] [Indexed: 11/08/2022]
Abstract
Tissue engineered heart valves (TEHVs) have the potential to address the shortcomings of current implants through the combination of cells and bioactive biomaterials that promote growth and proper mechanical function in physiological conditions. The ideal TEHV should be anti-thrombogenic, biocompatible, durable, and resistant to calcification, and should exhibit a physiological hemodynamic profile. In addition, TEHVs may possess the capability to integrate and grow with somatic growth, eliminating the need for multiple surgeries children must undergo. Thus, this review assesses clinically available heart valve prostheses, outlines the design criteria for developing a heart valve, and evaluates three types of biomaterials (decellularized, natural, and synthetic) for tissue engineering heart valves. While significant progress has been made in biomaterials and fabrication techniques, a viable tissue engineered heart valve has yet to be translated into a clinical product. Thus, current strategies and future perspectives are also discussed to facilitate the development of new approaches and considerations for heart valve tissue engineering.
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Affiliation(s)
- Aline L. Y. Nachlas
- Wallace H Coulter Department of Biomedical Engineering Georgia Institute of Technology and Emory University Atlanta GA 30332 USA
| | - Siyi Li
- Wallace H Coulter Department of Biomedical Engineering Georgia Institute of Technology and Emory University Atlanta GA 30332 USA
| | - Michael E. Davis
- Wallace H Coulter Department of Biomedical Engineering Georgia Institute of Technology and Emory University Atlanta GA 30332 USA
- Children's Heart Research & Outcomes (HeRO) Center Children's Healthcare of Atlanta & Emory University Atlanta GA 30322 USA
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Kislitsina ON, Revishvili AS, Cox JL. Unlocking the secrets to regenerating cardiac tissue: an update. Interact Cardiovasc Thorac Surg 2017; 26:146-153. [DOI: 10.1093/icvts/ivx264] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2017] [Accepted: 07/11/2017] [Indexed: 11/14/2022] Open
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Rizwan M, Peh GS, Ang HP, Lwin NC, Adnan K, Mehta JS, Tan WS, Yim EK. Sequentially-crosslinked bioactive hydrogels as nano-patterned substrates with customizable stiffness and degradation for corneal tissue engineering applications. Biomaterials 2017; 120:139-154. [DOI: 10.1016/j.biomaterials.2016.12.026] [Citation(s) in RCA: 147] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2016] [Revised: 12/06/2016] [Accepted: 12/22/2016] [Indexed: 11/25/2022]
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12
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Elastomers in vascular tissue engineering. Curr Opin Biotechnol 2016; 40:149-154. [PMID: 27149017 DOI: 10.1016/j.copbio.2016.04.008] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2016] [Revised: 03/25/2016] [Accepted: 04/05/2016] [Indexed: 11/23/2022]
Abstract
Elastomers are popular in vascular engineering applications, as they offer the ability to design implants that match the compliance of native tissue. By mimicking the natural tissue environment, elastic materials are able to integrate within the body to promote repair and avoid the adverse physiological responses seen in rigid alternatives that often disrupt tissue function. The design of elastomers has continued to evolve, moving from a focus on long term implants to temporary resorbable implants that support tissue regeneration. This has been achieved through designing chemistries and processing methodologies that control material behavior and bioactivity, while maintaining biocompatibility in vivo. Here we review the latest developments in synthetic and natural elastomers and their application in cardiovascular treatments.
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