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Yang T, Li G, Li X, Wei B, Su H, Liu W, Guo S, Yang N, Xu T, Duan C. VEGF combined with DAPT promotes tissue regeneration and remodeling in vascular grafts. Regen Biomater 2023; 10:rbad088. [PMID: 37899954 PMCID: PMC10603585 DOI: 10.1093/rb/rbad088] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2023] [Revised: 08/28/2023] [Accepted: 09/14/2023] [Indexed: 10/31/2023] Open
Abstract
Previous research on tissue-engineered blood vessels (TEBVs) has mainly focused on the intima or adventitia unilaterally, neglecting the equal importance of both layers. Meanwhile, the efficacy of grafts modified with vascular endothelial growth factor (VEGF) merely has been limited. Here, we developed a small-diameter graft that can gradually release VEGF and γ secretase inhibitor IX (DAPT) to enhance tissue regeneration and remodeling in both the intima and adventitia. In vitro, experiments revealed that the combination of VEGF and DAPT had superior pro-proliferation and pro-migration effects on endothelial cells. In vivo, the sustained release of VEGF and DAPT from the grafts resulted in improved regeneration and remodeling. Specifically, in the intima, faster endothelialization and regeneration of smooth muscle cells led to higher patency rates and better remodeling. In the adventitia, a higher density of neovascularization, M2 macrophages and fibroblasts promoted cellular ingrowth and replacement of the implant with autologous neo-tissue. Furthermore, western blot analysis confirmed that the regenerated ECs were functional and the effect of DAPT was associated with increased expression of vascular endothelial growth factor receptor 2. Our study demonstrated that the sustained release of VEGF and DAPT from the graft can effectively promote tissue regeneration and remodeling in both the intima and adventitia. This development has the potential to significantly accelerate the clinical application of small-diameter TEBVs.
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Affiliation(s)
- Tao Yang
- Neurosurgery Center, Department of Cerebrovascular Surgery, The National Key Clinical Specialty, The Engineering Technology Research Center of Education Ministry of China on Diagnosis and Treatment of Cerebrovascular Disease, Guangdong Provincial Key Laboratory on Brain Function Repair and Regeneration, The Neurosurgery Institute of Guangdong Province, Zhujiang Hospital, Southern Medical University, Guangzhou 510282, China
| | - Guangxu Li
- Department of Neurosurgery, The First Affiliated Hospital of Jinan University, Guangzhou, Guangdong, 510630, China
| | - Xifeng Li
- Neurosurgery Center, Department of Cerebrovascular Surgery, The National Key Clinical Specialty, The Engineering Technology Research Center of Education Ministry of China on Diagnosis and Treatment of Cerebrovascular Disease, Guangdong Provincial Key Laboratory on Brain Function Repair and Regeneration, The Neurosurgery Institute of Guangdong Province, Zhujiang Hospital, Southern Medical University, Guangzhou 510282, China
| | - Boyang Wei
- Neurosurgery Center, Department of Cerebrovascular Surgery, The National Key Clinical Specialty, The Engineering Technology Research Center of Education Ministry of China on Diagnosis and Treatment of Cerebrovascular Disease, Guangdong Provincial Key Laboratory on Brain Function Repair and Regeneration, The Neurosurgery Institute of Guangdong Province, Zhujiang Hospital, Southern Medical University, Guangzhou 510282, China
| | - Hengxian Su
- Neurosurgery Center, Department of Cerebrovascular Surgery, The National Key Clinical Specialty, The Engineering Technology Research Center of Education Ministry of China on Diagnosis and Treatment of Cerebrovascular Disease, Guangdong Provincial Key Laboratory on Brain Function Repair and Regeneration, The Neurosurgery Institute of Guangdong Province, Zhujiang Hospital, Southern Medical University, Guangzhou 510282, China
| | - Wenchao Liu
- Neurosurgery Center, Department of Cerebrovascular Surgery, The National Key Clinical Specialty, The Engineering Technology Research Center of Education Ministry of China on Diagnosis and Treatment of Cerebrovascular Disease, Guangdong Provincial Key Laboratory on Brain Function Repair and Regeneration, The Neurosurgery Institute of Guangdong Province, Zhujiang Hospital, Southern Medical University, Guangzhou 510282, China
| | - Shenquan Guo
- Neurosurgery Center, Department of Cerebrovascular Surgery, The National Key Clinical Specialty, The Engineering Technology Research Center of Education Ministry of China on Diagnosis and Treatment of Cerebrovascular Disease, Guangdong Provincial Key Laboratory on Brain Function Repair and Regeneration, The Neurosurgery Institute of Guangdong Province, Zhujiang Hospital, Southern Medical University, Guangzhou 510282, China
| | - Nan Yang
- Neurosurgery Center, Department of Cerebrovascular Surgery, The National Key Clinical Specialty, The Engineering Technology Research Center of Education Ministry of China on Diagnosis and Treatment of Cerebrovascular Disease, Guangdong Provincial Key Laboratory on Brain Function Repair and Regeneration, The Neurosurgery Institute of Guangdong Province, Zhujiang Hospital, Southern Medical University, Guangzhou 510282, China
| | - Tao Xu
- Department of Bio-intelligent Manufacturing and Living Matter Bioprinting Center, Research Institute of Tsinghua University in Shenzhen, Tsinghua University, Shenzhen 518057, People’s Republic of China
- Department of Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen 518055, People’s Republic of China
| | - Chuanzhi Duan
- Neurosurgery Center, Department of Cerebrovascular Surgery, The National Key Clinical Specialty, The Engineering Technology Research Center of Education Ministry of China on Diagnosis and Treatment of Cerebrovascular Disease, Guangdong Provincial Key Laboratory on Brain Function Repair and Regeneration, The Neurosurgery Institute of Guangdong Province, Zhujiang Hospital, Southern Medical University, Guangzhou 510282, China
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2
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Nan A, Turcu R, Tudoran C, Sofronie M, Chiriac A. Analysis of Functionalized Ferromagnetic Memory Alloys from the Perspective of Developing a Medical Vascular Implant. Polymers (Basel) 2022; 14:polym14071397. [PMID: 35406270 PMCID: PMC9002481 DOI: 10.3390/polym14071397] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2022] [Revised: 03/24/2022] [Accepted: 03/27/2022] [Indexed: 02/01/2023] Open
Abstract
Durable biocompatible metal vascular implants are still one of the significant challenges of contemporary medicine. This work presents the preparation of ferromagnetic biomaterials with shape memory in metal strips based on FePd (30 at% Pd) that is either not doped or doped with Ga and Mn, coated with poly(benzofuran-co-arylacetic acid) or polyglutamic acid. The coating of the metal strips with polymers was achieved after the metal surface had been previously treated with open-air cold plasma. The final functionalization was performed to induce anti-thrombogenic/thrombolytic properties in the resulting materials. SEM-EDX microscopy and X-ray photoelectron microscopy (XPS) determined the morphology and composition of the metal strips covered with polymers. In vitro tests of standardized thromboplastin time (PTT) and prothrombin time (PT) were performed to evaluate the thrombogenicity of these biofunctionalized materials for future possible monitoring of the implant in patients.
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Affiliation(s)
- Alexandrina Nan
- National Institute for Research and Development of Isotopic and Molecular Technologies, 67-103 Donat Str., 400293 Cluj-Napoca, Romania;
- Correspondence: (A.N.); (R.T.); Tel.: +40-264-584-037 (A.N.)
| | - Rodica Turcu
- National Institute for Research and Development of Isotopic and Molecular Technologies, 67-103 Donat Str., 400293 Cluj-Napoca, Romania;
- Correspondence: (A.N.); (R.T.); Tel.: +40-264-584-037 (A.N.)
| | - Cristian Tudoran
- National Institute for Research and Development of Isotopic and Molecular Technologies, 67-103 Donat Str., 400293 Cluj-Napoca, Romania;
| | - Mihaela Sofronie
- National Institute of Materials Physics, Atomistilor Str. 405 A, 077125 Bucharest, Romania;
| | - Alexandru Chiriac
- Department of Neurosurgery, University of Medicine and Pharmacy Grigore T. Popa, University Str. 16, 700115 Iași, Romania;
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3
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Táborská J, Riedelová Z, Brynda E, Májek P, Riedel T. Endothelialization of an ePTFE vessel prosthesis modified with an antithrombogenic fibrin/heparin coating enriched with bound growth factors. RSC Adv 2021; 11:5903-5913. [PMID: 35423133 PMCID: PMC8694727 DOI: 10.1039/d1ra00053e] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2021] [Accepted: 01/27/2021] [Indexed: 01/31/2023] Open
Abstract
Early and late thrombosis remain the most frequent reasons for the failure of synthetic cardiovascular grafts. Long-term hemocompatibility of implanted synthetic grafts can be achieved if a natural living endothelium is formed over its blood-contacting surface. Here we present a modification of a standard expanded polytetrafluorethylene (ePTFE) vessel prosthesis by a controlled preparation of a fibrin mesh enriched with covalently bound heparin and noncovalently bound vascular endothelial growth factor (VEGF) and fibroblast growth factor (FGF). Compared to a bare prosthesis, the coated prosthesis showed excellent antithrombogenic properties after contact with heparinized fresh human blood. Human umbilical vein endothelial cells seeded on the inner surface of the coated prosthesis formed a confluent layer in 5 days, whereas only small colonies of cells were scattered on the bare prosthesis. Viability of the cells was promoted mainly by FGF immobilized on the coating. These findings suggest that the coating may prevent acute thrombus formation and support the self-endothelialization of an implanted ePTFE vascular graft in vivo.
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Affiliation(s)
- Johanka Táborská
- Institute of Macromolecular Chemistry, Czech Academy of Sciences Heyrovského Náměstí 2 162 06 Prague 6 Czech Republic
| | - Zuzana Riedelová
- Institute of Macromolecular Chemistry, Czech Academy of Sciences Heyrovského Náměstí 2 162 06 Prague 6 Czech Republic
| | - Eduard Brynda
- Institute of Macromolecular Chemistry, Czech Academy of Sciences Heyrovského Náměstí 2 162 06 Prague 6 Czech Republic
| | - Pavel Májek
- Institute of Hematology and Blood Transfusion U Nemocnice 1 128 00 Prague 2 Czech Republic
| | - Tomáš Riedel
- Institute of Macromolecular Chemistry, Czech Academy of Sciences Heyrovského Náměstí 2 162 06 Prague 6 Czech Republic
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4
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Zhang X, Shi J, Chen S, Dong Y, Zhang L, Midgley AC, Kong D, Wang S. Polycaprolactone/gelatin degradable vascular grafts simulating endothelium functions modified by nitric oxide generation. Regen Med 2019; 14:1089-1105. [PMID: 31829097 DOI: 10.2217/rme-2019-0015] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Aim: Host remolding with scaffolds degradation and rapid formation of a complete endothelium, are prospective solutions for improving performance of small diameter vascular grafts. Materials & methods: For this purpose, microfibrous polycaprolactone (PCL)/gelatin scaffolds were prepared by electrospinning and subsequently functionalized with heparin and organoselenium-immobilized polyethyleneimine for nitric oxide generation through layer-by-layer self-assembly. Results: Our results showed that modified PCL/gelatin grafts had strong catalytic nitric oxide generation capacity and facilitated the enhanced attachment of endothelial cells, compared with control scaffold groups. Meanwhile, the modified grafts exhibited good hemocombatility, rapid endothelialization and smooth muscle cell regeneration. Conclusion: Modification of biodegradable scaffolds, proposed in this work, could enhance biological functions of vascular grafts and provides new strategies for the construction of small diameter vascular grafts.
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Affiliation(s)
- XiangYun Zhang
- Key Laboratory of Bioactive Materials for Ministry of Education, College of Life Sciences, Nankai University Tianjin 300071, China
| | - Jie Shi
- Key Laboratory of Bioactive Materials for Ministry of Education, College of Life Sciences, Nankai University Tianjin 300071, China
| | - SiYuan Chen
- Key Laboratory of Bioactive Materials for Ministry of Education, College of Life Sciences, Nankai University Tianjin 300071, China
| | - YunSheng Dong
- Key Laboratory of Bioactive Materials for Ministry of Education, College of Life Sciences, Nankai University Tianjin 300071, China
| | - Lin Zhang
- Key Laboratory of Bioactive Materials for Ministry of Education, College of Life Sciences, Nankai University Tianjin 300071, China
| | - Adam C Midgley
- Key Laboratory of Bioactive Materials for Ministry of Education, College of Life Sciences, Nankai University Tianjin 300071, China
| | - DeLing Kong
- Key Laboratory of Bioactive Materials for Ministry of Education, College of Life Sciences, Nankai University Tianjin 300071, China
| | - ShuFang Wang
- Key Laboratory of Bioactive Materials for Ministry of Education, College of Life Sciences, Nankai University Tianjin 300071, China
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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.
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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
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7
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Hytönen JP, Leppänen O, Taavitsainen J, Korpisalo P, Laidinen S, Alitalo K, Wadström J, Rissanen TT, Ylä-Herttuala S. Improved endothelialization of small-diameter ePTFE vascular grafts through growth factor therapy. VASCULAR BIOLOGY 2019; 1:1-9. [PMID: 32923945 PMCID: PMC7449264 DOI: 10.1530/vb-18-0001] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/30/2018] [Accepted: 12/06/2018] [Indexed: 01/07/2023]
Abstract
Background Prosthetic vascular grafts in humans characteristically lack confluent endothelialization regardless of the duration of implantation. Use of high-porosity grafts has been proposed as a way to induce endothelialization through transgraft capillarization, although early experiments failed to show increased healing in man. Objectives We hypothesized that transduction of tissues around the prosthetic conduit with vectors encoding VEGF receptor-2 (VEGFR2) ligands would augment transinterstitial capillarization and induce luminal endothelialization of high-porosity ePTFE grafts. Methods Fifty-two NZW rabbits received 87 ePTFE uni- or bilateral end-to-end interposition grafts in carotid arteries. Rabbits were randomized to local therapy with adenoviruses encoding AdVEGF-A165, AdVEGF-A109 or control AdLacZ and analyzed at 6 and 28 days after surgery by contrast-enhanced ultrasound and histology. Results AdVEGF-A165 and AdVEGF-A109 dramatically increased perfusion in perigraft tissues at 6 days (14.2 ± 3.6 or 16.7 ± 2.6-fold increases, P < 0.05 and P < 0.01). At 28 days, the effect was no longer significantly higher than baseline. At 6 days, no luminal endothelialization was observed in any of the groups. At 28 days, AdVEGF-A109- and AdVEGF-A165-treated animals showed enhanced ingrowth of transinterstitial capillaries (66.0 ± 13.7% and 77.4 ± 15.7% of graft thickness vs 44.7 ± 24.4% in controls, P < 0.05) and improved luminal endothelialization (11.2 ± 26.3% and 11.4 ± 22.2%, AdVEGF-A109 and AdVEGF-A165 vs 0% in controls, P < 0.05). No increased stenosis was observed in the treatment groups as compared to LacZ controls. Conclusions This study suggests that transient local overexpression of VEGFR2 ligands in the peri-implant tissues at the time of graft implantation is a novel strategy to increase endothelialization of high-porosity ePTFE vascular grafts and improve the patency of small-diameter vascular prostheses.
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Affiliation(s)
- Jarkko P Hytönen
- A.I. Virtanen Institute of Molecular Medicine, University of Eastern Finland, Kuopio, Finland
| | - Olli Leppänen
- A.I. Virtanen Institute of Molecular Medicine, University of Eastern Finland, Kuopio, Finland
| | - Jouni Taavitsainen
- A.I. Virtanen Institute of Molecular Medicine, University of Eastern Finland, Kuopio, Finland
| | - Petra Korpisalo
- A.I. Virtanen Institute of Molecular Medicine, University of Eastern Finland, Kuopio, Finland
| | - Svetlana Laidinen
- A.I. Virtanen Institute of Molecular Medicine, University of Eastern Finland, Kuopio, Finland
| | - Kari Alitalo
- Molecular/Cancer Biology Laboratory, Biomedicum Helsinki, Helsinki, Finland
| | - Jonas Wadström
- Department of Transplantation Surgery, Karolinska Hospital Huddinge, Karolinska Institute, Stockholm, Sweden
| | | | - Seppo Ylä-Herttuala
- A.I. Virtanen Institute of Molecular Medicine, University of Eastern Finland, Kuopio, Finland.,Gene Therapy Unit, Kuopio University Hospital, Kuopio, Finland.,Heart Center, Kuopio University Hospital, Kuopio, Finland
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8
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Pan Y, Yang J, Wei Y, Wang H, Jiao R, Moraga A, Zhang Z, Hu Y, Kong D, Xu Q, Zeng L, Zhao Q. Histone Deacetylase 7-Derived Peptides Play a Vital Role in Vascular Repair and Regeneration. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2018; 5:1800006. [PMID: 30128229 PMCID: PMC6097091 DOI: 10.1002/advs.201800006] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/02/2018] [Revised: 05/19/2018] [Indexed: 05/19/2023]
Abstract
Cardiovascular disease is a leading cause of morbidity and mortality globally. Accumulating evidence indicates that local resident stem/progenitor cells play an important role in vascular regeneration. Recently, it is demonstrated that a histone deacetylase 7-derived 7-amino acid peptide (7A, MHSPGAD) is critical in modulating the mobilization and orientated differentiation of these stem/progenitor cells. Here, its therapeutic efficacy in vascular repair and regeneration is evaluated. In vitro functional analyses reveal that the 7A peptide, in particular phosphorylated 7A (7Ap, MH[pSer]PGAD), could increase stem cell antigen-1 positive (Sca1+) vascular progenitor cell (VPC) migration and differentiation toward an endothelial cell lineage. Furthermore, local delivery of 7A as well as 7Ap could enhance angiogenesis and ameliorate vascular injury in ischaemic tissues; these findings are confirmed in a femoral artery injury model and a hindlimb ischaemia model, respectively. Importantly, sustained delivery of 7A, especially 7Ap, from tissue-engineered vascular grafts could attract Sca1+-VPC cells into the grafts, contributing to endothelialization and intima/media formation in the vascular graft. These results suggest that this novel type of peptides has great translational potential in vascular regenerative medicine.
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Affiliation(s)
- Yiwa Pan
- State key Laboratory of Medicinal Chemical Biology and Key Laboratory of Bioactive Materials (Ministry of Education)College of Life SciencesNankai UniversityTianjin300071P. R. China
| | - Junyao Yang
- Cardiovascular DivisionFaculty of Life Science and MedicineKing's College LondonLondonSE5 9NUUK
| | - Yongzhen Wei
- State key Laboratory of Medicinal Chemical Biology and Key Laboratory of Bioactive Materials (Ministry of Education)College of Life SciencesNankai UniversityTianjin300071P. R. China
| | - He Wang
- State key Laboratory of Medicinal Chemical Biology and Key Laboratory of Bioactive Materials (Ministry of Education)College of Life SciencesNankai UniversityTianjin300071P. R. China
| | - Rongkuan Jiao
- State key Laboratory of Medicinal Chemical Biology and Key Laboratory of Bioactive Materials (Ministry of Education)College of Life SciencesNankai UniversityTianjin300071P. R. China
| | - Ana Moraga
- Cardiovascular DivisionFaculty of Life Science and MedicineKing's College LondonLondonSE5 9NUUK
| | - Zhongyi Zhang
- Cardiovascular DivisionFaculty of Life Science and MedicineKing's College LondonLondonSE5 9NUUK
| | - Yanhua Hu
- Cardiovascular DivisionFaculty of Life Science and MedicineKing's College LondonLondonSE5 9NUUK
| | - Deling Kong
- State key Laboratory of Medicinal Chemical Biology and Key Laboratory of Bioactive Materials (Ministry of Education)College of Life SciencesNankai UniversityTianjin300071P. R. China
| | - Qingbo Xu
- Cardiovascular DivisionFaculty of Life Science and MedicineKing's College LondonLondonSE5 9NUUK
| | - Lingfang Zeng
- Cardiovascular DivisionFaculty of Life Science and MedicineKing's College LondonLondonSE5 9NUUK
| | - Qiang Zhao
- State key Laboratory of Medicinal Chemical Biology and Key Laboratory of Bioactive Materials (Ministry of Education)College of Life SciencesNankai UniversityTianjin300071P. R. China
- Jiangsu Center for the Collaboration and Innovation of Cancer BiotherapyCancer InstituteXuzhou Medical UniversityXuzhouJiangsu221000China
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9
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Shafiq M, Zhang Q, Zhi D, Wang K, Kong D, Kim DH, Kim SH. In Situ Blood Vessel Regeneration Using SP (Substance P) and SDF (Stromal Cell-Derived Factor)-1α Peptide Eluting Vascular Grafts. Arterioscler Thromb Vasc Biol 2018; 38:e117-e134. [PMID: 29853570 PMCID: PMC6039427 DOI: 10.1161/atvbaha.118.310934] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2017] [Accepted: 05/16/2018] [Indexed: 01/22/2023]
Abstract
OBJECTIVE The objective of this study was to develop small-diameter vascular grafts capable of eluting SDF (stromal cell-derived factor)-1α-derived peptide and SP (substance P) for in situ vascular regeneration. APPROACH AND RESULTS Polycaprolactone (PCL)/collagen grafts containing SP or SDF-1α-derived peptide were fabricated by electrospinning. SP and SDF-1α peptide-loaded grafts recruited significantly higher numbers of mesenchymal stem cells than that of the control group. The in vivo potential of PCL/collagen, SDF-1, and SP grafts was assessed by implanting them in a rat abdominal aorta for up to 4 weeks. All grafts remained patent as observed using color Doppler and stereomicroscope. Host cells infiltrated into the graft wall and the neointima was formed in peptides-eluting grafts. The lumen of the SP grafts was covered by the endothelial cells with cobblestone-like morphology, which were elongated in the direction of the blood flow, as discerned using scanning electron microscopy. Moreover, SDF-1α and SP grafts led to the formation of a confluent endothelium as evaluated using immunofluorescence staining with von Willebrand factor antibody. SP and SDF-1α grafts also promoted smooth muscle cell regeneration, endogenous stem cell recruitment, and blood vessel formation, which was the most prominent in the SP grafts. Evaluation of inflammatory response showed that 3 groups did not significantly differ in terms of the numbers of proinflammatory macrophages, whereas SP grafts showed significantly higher numbers of proremodeling macrophages than that of the control and SDF-1α grafts. CONCLUSIONS SDF-1α and SP grafts can be potential candidates for in situ vascular regeneration and are worthy for future investigations.
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MESH Headings
- Angiogenesis Inducing Agents/chemistry
- Angiogenesis Inducing Agents/pharmacology
- Animals
- Aorta, Abdominal/diagnostic imaging
- Aorta, Abdominal/pathology
- Aorta, Abdominal/physiopathology
- Aorta, Abdominal/surgery
- Blood Vessel Prosthesis
- Blood Vessel Prosthesis Implantation/instrumentation
- Cell Movement/drug effects
- Cell Proliferation/drug effects
- Cells, Cultured
- Chemokine CXCL12/chemistry
- Chemokine CXCL12/pharmacology
- Coated Materials, Biocompatible
- Collagen Type I/chemistry
- Humans
- Male
- Mesenchymal Stem Cells/drug effects
- Neointima
- Neovascularization, Physiologic/drug effects
- Peptide Fragments/chemistry
- Peptide Fragments/pharmacology
- Polyesters/chemistry
- Prosthesis Design
- Rats, Sprague-Dawley
- Substance P/chemistry
- Substance P/pharmacology
- Time Factors
- Ultrasonography, Doppler, Color
- Vascular Patency
- Vascular Remodeling
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Affiliation(s)
- Muhammad Shafiq
- From the Department of Biomedical Engineering, Korea University of Science and Technology, Daejeon (M.S., S.H.K.)
- Center for Biomaterials, Biomedical Research Institute, Department of Biomedical Engineering, Korea Institute of Science and Technology, Seoul, Republic of Korea (M.S., S.H.K.)
- State Key Laboratory of Medicinal Chemical Biology, Key Laboratory of Bioactive Materials of Ministry of Education, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), College of Life Science, Department of Biochemistry and Molecular Biology, Nankai University, China (M.S., Q.Z., D.Z., K.W., D.K.)
| | - Qiuying Zhang
- State Key Laboratory of Medicinal Chemical Biology, Key Laboratory of Bioactive Materials of Ministry of Education, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), College of Life Science, Department of Biochemistry and Molecular Biology, Nankai University, China (M.S., Q.Z., D.Z., K.W., D.K.)
| | - Dengke Zhi
- State Key Laboratory of Medicinal Chemical Biology, Key Laboratory of Bioactive Materials of Ministry of Education, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), College of Life Science, Department of Biochemistry and Molecular Biology, Nankai University, China (M.S., Q.Z., D.Z., K.W., D.K.)
| | - Kai Wang
- State Key Laboratory of Medicinal Chemical Biology, Key Laboratory of Bioactive Materials of Ministry of Education, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), College of Life Science, Department of Biochemistry and Molecular Biology, Nankai University, China (M.S., Q.Z., D.Z., K.W., D.K.)
| | - Deling Kong
- State Key Laboratory of Medicinal Chemical Biology, Key Laboratory of Bioactive Materials of Ministry of Education, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), College of Life Science, Department of Biochemistry and Molecular Biology, Nankai University, China (M.S., Q.Z., D.Z., K.W., D.K.)
| | - Dong-Hwee Kim
- Tianjin Key Laboratory of Biomedical Materials, Institute of Biomedical Engineering, Chinese Academy of Medical Sciences and Peking Union Medical College, China (D.K.)
- Department of Nano-Bio-Information Technology (NBIT), KU-KIST Graduate School of Converging Science and Technology, Korea University, Seoul (D.-H.K., S.H.K.)
| | - Soo Hyun Kim
- From the Department of Biomedical Engineering, Korea University of Science and Technology, Daejeon (M.S., S.H.K.)
- Center for Biomaterials, Biomedical Research Institute, Department of Biomedical Engineering, Korea Institute of Science and Technology, Seoul, Republic of Korea (M.S., S.H.K.)
- Department of Nano-Bio-Information Technology (NBIT), KU-KIST Graduate School of Converging Science and Technology, Korea University, Seoul (D.-H.K., S.H.K.)
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10
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Performance improvements of the BNC tubes from unique double-silicone-tube bioreactors by introducing chitosan and heparin for application as small-diameter artificial blood vessels. Carbohydr Polym 2017; 178:394-405. [DOI: 10.1016/j.carbpol.2017.08.120] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2017] [Revised: 08/26/2017] [Accepted: 08/28/2017] [Indexed: 01/04/2023]
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11
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Enhanced corrosion resistance and cytocompatibility of biodegradable Mg alloys by introduction of Mg(OH) 2 particles into poly (L-lactic acid) coating. Sci Rep 2017; 7:41796. [PMID: 28150751 PMCID: PMC5288779 DOI: 10.1038/srep41796] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2016] [Accepted: 12/28/2016] [Indexed: 01/19/2023] Open
Abstract
A strategy of suppressing the fast degradation behaviour of Mg-based biomaterials by the introduction of one of Mg degradation products Mg(OH)2 was proposed according to the following degradation mechanism, Mg + 2H2O ⇋ Mg(OH)2 + H2↑. Specifically, Mg(OH)2 submicron particles were mixed into poly (L-lactic acid) (PLLA) to synthesize a composite coating onto hydrofluoric acid-pretreated Mg-Nd-Zn-Zr alloy. The in vitro degradation investigations showed that the addition of Mg(OH)2 particles not only slowed down the corrosion of Mg matrix, but also retarded the formation of gas pockets underneath the polymer coating. Correspondingly, cytocompatibility results exhibited significant improvement of proliferation of endothelial cells, and further insights was gained into the mechanisms how the introduction of Mg(OH)2 particles into PLLA coating affected the magnesium alloy degradation and cytocompatibility. The present study provided a promising surface modification strategy to tailor the degradation behaviour of Mg-based biomaterials.
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Echeverry‐Rendon M, Reece LM, Pastrana F, Arias SL, Shetty AR, Pavón JJ, Allain JP. Bacterial Nanocellulose Magnetically Functionalized for Neuro‐Endovascular Treatment. Macromol Biosci 2017; 17. [DOI: 10.1002/mabi.201600382] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2016] [Revised: 11/30/2016] [Indexed: 11/08/2022]
Affiliation(s)
- Mónica Echeverry‐Rendon
- Department of Nuclear Plasma and Radiological Engineering Micro and Nanotechnology Laboratory University of Illinois at Urbana Champaign Urbana 61801 IL USA
- Program of Study and Control of Tropical Diseases (PECET) University of Antioquia Medellin 050003 Colombia
- Micro and Nanotechnology Laboratory University of Illinois at Urbana‐Champaign Urbana 61801 IL USA
| | - Lisa M. Reece
- Birck Nanotechnology Center Purdue University West Lafayette 47907 IN USA
- Department of Basic Medical Sciences College of Veterinary Medicine Purdue University West Lafayette 47907 IN USA
- Sealy Center for Vaccine Development University of Texas Medical Branch Galveston 77555 TX USA
| | - Fernando Pastrana
- Birck Nanotechnology Center Purdue University West Lafayette 47907 IN USA
- Universidad de los Andes Bogota 111711 Colombia
| | - Sandra L. Arias
- Department of Nuclear Plasma and Radiological Engineering Micro and Nanotechnology Laboratory University of Illinois at Urbana Champaign Urbana 61801 IL USA
- Micro and Nanotechnology Laboratory University of Illinois at Urbana‐Champaign Urbana 61801 IL USA
| | - Akshath R. Shetty
- Department of Nuclear Plasma and Radiological Engineering Micro and Nanotechnology Laboratory University of Illinois at Urbana Champaign Urbana 61801 IL USA
- Micro and Nanotechnology Laboratory University of Illinois at Urbana‐Champaign Urbana 61801 IL USA
| | - Juan Jose Pavón
- Department of Nuclear Plasma and Radiological Engineering Micro and Nanotechnology Laboratory University of Illinois at Urbana Champaign Urbana 61801 IL USA
- Micro and Nanotechnology Laboratory University of Illinois at Urbana‐Champaign Urbana 61801 IL USA
- Department of Bioengineering Group of Advanced Biomaterials and Regenerative Medicine BAMR School of Engineering University of Antioquia Medellin 050003 Colombia
| | - Jean Paul Allain
- Department of Nuclear Plasma and Radiological Engineering Micro and Nanotechnology Laboratory University of Illinois at Urbana Champaign Urbana 61801 IL USA
- Micro and Nanotechnology Laboratory University of Illinois at Urbana‐Champaign Urbana 61801 IL USA
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13
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Chang H, Liu XQ, Hu M, Zhang H, Li BC, Ren KF, Boudou T, Albiges-Rizo C, Picart C, Ji J. Substrate Stiffness Combined with Hepatocyte Growth Factor Modulates Endothelial Cell Behavior. Biomacromolecules 2016; 17:2767-76. [PMID: 27428305 PMCID: PMC5024748 DOI: 10.1021/acs.biomac.6b00318] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Endothelial cells (ECs) play a crucial role in regulating various physiological and pathological processes. The behavior of ECs is modulated by physical (e.g., substrate stiffness) and biochemical cues (e.g., growth factors). However, the synergistic influence of these cues on EC behavior has rarely been investigated. In this study, we constructed poly(l-lysine)/hyaluronan (PLL/HA) multilayer films with different stiffness and exposed ECs to these substrates with and without hepatocyte growth factor (HGF)-supplemented culture medium. We demonstrated that EC adhesion, migration, and proliferation were positively correlated with substrate stiffness and that these behaviors were further promoted by HGF. Interestingly, ECs on the lower stiffness substrates showed stronger responses to HGF in terms of migration and proliferation, suggesting that HGF can profoundly influence stiffness-dependent EC behavior correlated with EC growth. After the formation of an EC monolayer, EC behaviors correlated with endothelial function were evaluated by characterizing monolayer integrity, nitric oxide production, and gene expression of endothelial nitric oxide synthase. For the first time, we demonstrated that endothelial function displayed a negative correlation with substrate stiffness. Although HGF improved endothelial function, HGF was not able to change the stiffness-dependent manner of endothelial functions. Taken together, this study provides insights into the synergetic influence of physical and biochemical cues on EC behavior and offers great potential in the development of optimized biomaterials for EC-based regenerative medicine.
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Affiliation(s)
- Hao Chang
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, PR China
| | - Xi-qiu Liu
- CNRS UMR 5628 (LMGP), 3 parvis Louis Néel, 38016 Grenoble, France
- Université Grenoble Alpes, LMGP, 3 parvis Louis Néel, 38016 Grenoble, France
| | - Mi Hu
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, PR China
| | - He Zhang
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, PR China
| | - Bo-chao Li
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, PR China
| | - Ke-feng Ren
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, PR China
| | - Thomas Boudou
- CNRS UMR 5628 (LMGP), 3 parvis Louis Néel, 38016 Grenoble, France
- Université Grenoble Alpes, LMGP, 3 parvis Louis Néel, 38016 Grenoble, France
| | | | - Catherine Picart
- CNRS UMR 5628 (LMGP), 3 parvis Louis Néel, 38016 Grenoble, France
- Université Grenoble Alpes, LMGP, 3 parvis Louis Néel, 38016 Grenoble, France
| | - Jian Ji
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, PR China
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14
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Aper T. Maßgeschneiderte autologe bioartifizielle Gefäßprothesen. ZEITSCHRIFT FUR HERZ THORAX UND GEFASSCHIRURGIE 2015. [DOI: 10.1007/s00398-015-0026-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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15
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16
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Kong X, Xu W. Biodegradation and biocompatibility of a degradable chitosan vascular prosthesis. Int J Clin Exp Med 2015; 8:3498-3505. [PMID: 26064241 PMCID: PMC4443075] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2014] [Accepted: 02/25/2015] [Indexed: 06/04/2023]
Abstract
An instrument made by ourselves was used to fabricate biodegradable chitosan-heparin artificial vascular prosthesis with small internal diameter (2 mm) and different crosslinking degree from biodegradable chitosan, chitosan derivates and heparin. In vivo and in vitro degradation studies, inflammatory analysis and electron microscope scanning of this artificial vascular prosthesis were performed. It was observed that 50% of the prosthesis decomposed in vivo and was replaced by natural tissues. The degradation process of the chitosan-heparin artificial vascular prosthesis of small diameter could be controlled by changing the crosslinking degree. This kind of artificial vascular prosthesis shows good biocompatibility that can be controllability designed to achieve desirable in vascular replacement application.
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Affiliation(s)
- Xiaoying Kong
- College of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural UniversityQingdao, Shandong province, China
| | - Wenhua Xu
- The Medical College, Qingdao UniversityQingdao, Shandong province, China
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17
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Lin QK, Hou Y, Xu X, Tang J, Han Y, Chen H, Ji J. Anti-CD34 Antibody Functionalized Swollen Polymeric Coating for Endothelial Cell Rapid Selectively Capture. INT J POLYM MATER PO 2014. [DOI: 10.1080/00914037.2014.886248] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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18
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Fayol D, Le Visage C, Ino J, Gazeau F, Letourneur D, Wilhelm C. Design of Biomimetic Vascular Grafts with Magnetic Endothelial Patterning. Cell Transplant 2013; 22:2105-18. [DOI: 10.3727/096368912x661300] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
The development of small diameter vascular grafts with a controlled pluricellular organization is still needed for effective vascular tissue engineering. Here, we describe a technological approach combining a tubular scaffold and magnetically labeled cells to create a pluricellular and organized vascular graft, the endothelialization of which could be monitored by MRI prior to transplantation. A novel type of scaffold was developed with a tubular geometry and a porous bulk structure enabling the seeding of cells in the scaffold pores. A homogeneous distribution of human mesenchymal stem cells in the macroporous structure was obtained by seeding the freeze-dried scaffold with the cell suspension. The efficient covering of the luminal surface of the tube was then made possible thanks to the implementation of a magnetic-based patterning technique. Human endothelial cells or endothelial progenitors were magnetically labeled with iron oxide nanoparticles and successfully attracted to the 2-mm lumen where they attached and formed a continuous endothelium. The combination of imaging modalities [fluorescence imaging, histology, and 3D magnetic resonance imaging (MRI)] evidenced the integrity of the vascular construct. In particular, the observation of different cell organizations in a vascular scaffold within the range of resolution of single cells by 4.7 T MRI is reported.
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Affiliation(s)
- Delphine Fayol
- Laboratoire Matière et Systèmes Complexes (MSC), UMR 7057 CNRS and Université Paris Diderot, Paris, France
| | - Catherine Le Visage
- Inserm, U698, Bio-ingénierie Cardiovasculaire, Université Paris Diderot, CHU X. Bichat, Paris, France
| | - Julia Ino
- Inserm, U698, Bio-ingénierie Cardiovasculaire, Université Paris Diderot, CHU X. Bichat, Paris, France
| | - Florence Gazeau
- Laboratoire Matière et Systèmes Complexes (MSC), UMR 7057 CNRS and Université Paris Diderot, Paris, France
| | - Didier Letourneur
- Inserm, U698, Bio-ingénierie Cardiovasculaire, Université Paris Diderot, CHU X. Bichat, Paris, France
| | - Claire Wilhelm
- Laboratoire Matière et Systèmes Complexes (MSC), UMR 7057 CNRS and Université Paris Diderot, Paris, France
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19
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Endothelialization and patency of RGD-functionalized vascular grafts in a rabbit carotid artery model. Biomaterials 2012; 33:2880-91. [DOI: 10.1016/j.biomaterials.2011.12.047] [Citation(s) in RCA: 236] [Impact Index Per Article: 19.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2011] [Accepted: 12/26/2011] [Indexed: 01/22/2023]
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20
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Kong X, Han B, Li H, Liang Y, Shao K, Liu W. New biodegradable small-diameter artificial vascular prosthesis: A feasibility study. J Biomed Mater Res A 2012; 100:1494-504. [DOI: 10.1002/jbm.a.33298] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2011] [Revised: 07/12/2011] [Accepted: 09/26/2011] [Indexed: 11/06/2022]
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21
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Yuan B, Jin Y, Sun Y, Wang D, Sun J, Wang Z, Zhang W, Jiang X. A strategy for depositing different types of cells in three dimensions to mimic tubular structures in tissues. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2012; 24:890-6. [PMID: 22403828 DOI: 10.1002/adma.201104589] [Citation(s) in RCA: 167] [Impact Index Per Article: 13.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
The fabrication of tubular structures, with multiple cell types forming different layers of the tube walls, is described using a stress-induced rolling membrane (SIRM). Cell orientation inside the tubes can also be controlled by topographical contact guidance. These layered tubes precisely mimic blood vessels and many other tubular structures, suggesting that they may be of great use in tissue engineering.
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Affiliation(s)
- Bo Yuan
- National Center for NanoScience and Technology China, Beijing, China
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22
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Biomimicking Polysaccharide Nanofibers Promote Vascular Phenotypes: A Potential Application for Vascular Tissue Engineering. Macromol Biosci 2011; 12:395-401. [DOI: 10.1002/mabi.201100336] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2011] [Revised: 10/26/2011] [Indexed: 11/07/2022]
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23
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Wei Y, Ji Y, Xiao L, Lin Q, Ji J. Different complex surfaces of polyethyleneglycol (PEG) and REDV ligand to enhance the endothelial cells selectivity over smooth muscle cells. Colloids Surf B Biointerfaces 2011; 84:369-78. [PMID: 21333506 DOI: 10.1016/j.colsurfb.2011.01.028] [Citation(s) in RCA: 73] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2010] [Revised: 11/17/2010] [Accepted: 01/19/2011] [Indexed: 11/19/2022]
Abstract
Arg-Glu-Asp-Val (REDV) peptide with endothelial cells (ECs) selectivity was immobilized onto PEG based polymeric coating via the active p-nitrophenyloxycarbonyl group. The adhesion and proliferation of human umbilical vein endothelial cells (HUVECs) and human aortic smooth muscle cells (HASMCs) onto surface modified either by REDV end-tethered polyethylene glycol (PEG) or by the complex of free PEG and REDV were investigated to understand the synergic action of nonspecific resistance of PEG and specific recognitions of REDV. Cell culture results indicated that the surfaces end tethered by REDV peptide via PEG "spacer" (n=1, 6, 10) exhibited slight EC selectivity and showed small difference between different lengths of PEG chain. Both separate-culture and co-culture of HUVECs and HASMCs indicated that the introducing of free PEG into REDV tethered surface inhibited HASMCs adhesion significantly and remained a high level of HUVECs growth. Furthermore, the surface with short free PEG chain (n=6) was much more effective to enhance ECs selectivity than long EG chain (n=23). The combination of nonspecific resistance of short free PEG and the ECs selectivity of REDV peptide presents much better ability to enhance the competitive adhesion of HUVECs over HASMCs.
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Affiliation(s)
- Yu Wei
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, PR China
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24
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Xia Y, Prawirasatya M, Heng BC, Boey F, Venkatraman SS. Seeding density matters: extensive intercellular contact masks the surface dependence of endothelial cell-biomaterial interactions. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2011; 22:389-396. [PMID: 21221736 DOI: 10.1007/s10856-010-4211-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/23/2010] [Accepted: 12/08/2010] [Indexed: 05/30/2023]
Abstract
The effects of seeding density have often been overlooked in evaluating endothelial cell-biomaterial interactions. This study compared the cell attachment and proliferation characteristics of endothelial cells on modified poly (L: -lactic acid) (PLLA) films conjugated to gelatin and chitosan at low and high seeding densities (5,000 and 50,000 cells/cm(2)). During the early stage (2 h) of cell-biomaterial interaction, a low seeding density enabled us to observe the intrinsic surface-dependent differences in cell attachment capacity and morphogenesis, whereas extensive intercellular interactions at high seeding density masked differences between substrates and improved cell attachment on low-affinity substrates. During the later stage of cell-biomaterial interaction over 7-days of culture, the proliferation rate was found to be surface-dependent at low seeding density, whereas this surface-dependent difference was not apparent at high seeding density. It is recommended that low seeding density should be utilized for evaluating biomaterial applications where EC density is likely to be low, such as in situ endothelialization of blood-contacting devices.
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Affiliation(s)
- Yun Xia
- School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Nanyang, 639798, Singapore
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25
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Horwitz JA, Shum KM, Bodle JC, Deng M, Chu CC, Reinhart-King CA. Biological performance of biodegradable amino acid-based poly(ester amide)s: Endothelial cell adhesion and inflammation in vitro. J Biomed Mater Res A 2010; 95:371-80. [DOI: 10.1002/jbm.a.32858] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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26
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Bioresorbable elastomeric vascular tissue engineering scaffolds via melt spinning and electrospinning. Acta Biomater 2010; 6:1958-67. [PMID: 20004258 DOI: 10.1016/j.actbio.2009.12.007] [Citation(s) in RCA: 118] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2009] [Revised: 10/07/2009] [Accepted: 12/03/2009] [Indexed: 01/08/2023]
Abstract
Current surgical therapy for diseased vessels less than 6mm in diameter involves bypass grafting with autologous arteries or veins. Although this surgical practice is common, it has significant limitations and complications, such as occlusion, intimal hyperplasia and compliance mismatch. As a result, cardiovascular biomaterials research has been motivated to develop tissue-engineered blood vessel substitutes. In this study, vascular tissue engineering scaffolds were fabricated using two different approaches, namely melt spinning and electrospinning. Small diameter tubes were fabricated from an elastomeric bioresorbable 50:50 poly(l-lactide-co-epsilon-caprolactone) copolymer having dimensions of 5mm in diameter and porosity of over 75%. Scaffolds electrospun from two different solvents, acetone and 1,1,1,3,3,3-hexafluoro-2-propanol were compared in terms of their morphology, mechanical properties and cell viability. Overall, the mechanical properties of the prototype tubes exceeded the transverse tensile values of natural arteries of similar caliber. In addition to spinning the polymer separately into melt-spun and electrospun constructs, the approach in this study has successfully demonstrated that these two techniques can be combined to produce double-layered tubular scaffolds containing both melt-spun macrofibers (<200microm in diameter) and electrospun submicron fibers (>400nm in diameter). Since the vascular wall has a complex multilayered architecture and unique mechanical properties, there remain several significant challenges before a successful tissue-engineered artery is achieved.
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27
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In situ endothelialization of intravascular stents coated with an anti-CD34 antibody functionalized heparin–collagen multilayer. Biomaterials 2010; 31:4017-25. [DOI: 10.1016/j.biomaterials.2010.01.092] [Citation(s) in RCA: 196] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2009] [Accepted: 01/15/2010] [Indexed: 11/21/2022]
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28
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Kelm JM, Lorber V, Snedeker JG, Schmidt D, Broggini-Tenzer A, Weisstanner M, Odermatt B, Mol A, Zünd G, Hoerstrup SP. A novel concept for scaffold-free vessel tissue engineering: self-assembly of microtissue building blocks. J Biotechnol 2010; 148:46-55. [PMID: 20223267 DOI: 10.1016/j.jbiotec.2010.03.002] [Citation(s) in RCA: 108] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2009] [Revised: 02/28/2010] [Accepted: 03/02/2010] [Indexed: 10/19/2022]
Abstract
Current scientific attempts to generate in vitro tissue-engineered living blood vessels (TEBVs) show substantial limitations, thereby preventing routine clinical use. In the present report, we describe a novel biotechnology concept to create living small diameter TEBV based exclusively on microtissue self-assembly (living cellular re-aggregates). A novel bioreactor was designed to assemble microtissues in a vascular shape and apply pulsatile flow and circumferential mechanical stimulation. Microtissues composed of human artery-derived fibroblasts (HAFs) and endothelial cells (HUVECs) were accumulated and cultured for 7 and 14 days under pulsatile flow/mechanical stimulation or static culture conditions with a diameter of 3mm and a wall thickness of 1mm. The resulting vessels were analyzed by immunohistochemistry for extracellular matrix (ECM) and cell phenotype (von Willebrand factor, alpha-SMA, Ki67, VEGF). Self-assembled microtissues composed of fibroblasts displayed significantly accelerated ECM formation compared to monolayer cell sheets. Accumulation of vessel-like tissue occurred within 14 days under both, static and flow/mechanical stimulation conditions. A layered tissue formation was observed only in the dynamic group, as indicated by luminal aligned alpha-SMA positive fibroblasts. We could demonstrate that self-assembled cell-based microtissues can be used to generate small diameter TEBV. The significant enhancement of ECM expression and maturation, together with the pre-vascularization capacity makes this approach highly attractive in terms of generating functional small diameter TEBV devoid of any foreign material.
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Affiliation(s)
- Jens M Kelm
- Regenerative Medicine Program, Department of Surgical Research, University of Zürich, CH-8091 Zürich, Switzerland.
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29
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Baek IS, Lee YJ, Park SJ, Bai CZ, Park JS, Kim DJ. Paclitaxel Coating Inhibits Inflammation Surrounding Subcutaneously Implanted Expanded Polytetrafluoroethylene (ePTFE) Hemodialysis Grafts in Rabbit Model. B KOREAN CHEM SOC 2010. [DOI: 10.5012/bkcs.2010.31.02.281] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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30
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Liu Y, Chan-Park MB. A biomimetic hydrogel based on methacrylated dextran-graft-lysine and gelatin for 3D smooth muscle cell culture. Biomaterials 2009; 31:1158-70. [PMID: 19897239 DOI: 10.1016/j.biomaterials.2009.10.040] [Citation(s) in RCA: 184] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2009] [Accepted: 10/16/2009] [Indexed: 10/20/2022]
Abstract
Many synthetic hydrogels for cell encapsulation have hitherto been based on polyethylene glycol which is non-natural, non-biodegradable and only terminal-functionalizable, all of which are drawbacks for tissue engineering or cell delivery. The polysaccharide dextran is also highly hydrophilic but biodegradable and pendant-functionalizable and more closely resembles glycosaminoglycans to mimic the natural extracellular matrix. This study reports synthesis of a methacrylate and lysine functionalized dextran and development of hydrogel composite systems based on this material and methacrylamide modified gelatin. The mechanical stiffness and degree of swelling of the hydrogels were varied by manipulation of the degree of functionalization of dextran and gelatin and concentration/composition of precursor solution. Human umbilical artery smooth muscle cells (SMCs) were encapsulated inside hydrogels during gel hardening with photopolymerization. Rapid cell spreading, extensive cellular network formation and high SMC proliferation occurred within softer hydrogels (with shear storage moduli ranging from 898 to 3124Pa). The encapsulated SMCs appear to be relatively contractile in the initial culture than on tissue culture polystyrene dish due to physical constraint imposed by the hydrogels but they become more synthetic with time possibly due to the inability of cells to reach confluence inside these cell-mediated degradable hydrogels. From the impressive cell proliferation and network formation, these new hydrogels combining polysaccharide and protein derivatives appear to be excellent candidates for further development as bioactive scaffolds for use in vascular tissue engineering and regeneration.
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Affiliation(s)
- Yunxiao Liu
- School of Chemical and Biomedical Engineering Nanyang Technological University, 62 Nanyang Drive, Singapore 637459, Singapore
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31
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Beamish JA, Fu A, Choi AJ, Haq N, Kottke-Marchant K, Marchant RE. The influence of RGD-bearing hydrogels on the re-expression of contractile vascular smooth muscle cell phenotype. Biomaterials 2009; 30:4127-35. [PMID: 19481795 PMCID: PMC2735770 DOI: 10.1016/j.biomaterials.2009.04.038] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2009] [Accepted: 04/22/2009] [Indexed: 10/24/2022]
Abstract
This study reports on the ability of poly(ethylene glycol) diacrylate (PEGDA) hydrogel scaffolds with pendant integrin-binding GRGDSP peptides (RGD-gels) to support the re-differentiation of cultured vascular smooth muscle cells (SMCs) toward a contractile phenotype. Human coronary artery SMCs were seeded on RGD-gels, hydrogels with other extracellular matrix derived peptides, fibronectin (FN) and laminin (LN). Differentiation was induced on RGD-gels with low serum medium containing soluble heparin, and the differentiation status was monitored by mRNA expression, protein expression, and intracellular protein organization of the contractile smooth muscle markers, smooth muscle alpha-actin, calponin, and SM-22alpha. RGD-gels supported a rapid induction (2.7- to 25-fold up-regulation) of SMC marker gene mRNA, with expression levels that were equivalent to FN and LN controls. Marker protein levels mirrored the changes in mRNA expression, with levels on RGD-gels indistinguishable from FN and LN controls. Furthermore, these markers co-localized in stress fibers within SMCs on RGD-gels suggesting the recapitulation of a contractile apparatus within the cells. These results indicate that SMCs cultured on RGD-bearing hydrogels can re-differentiate toward a contractile phenotype suggesting this material is an excellent candidate for further development as a bioactive scaffold that regulates SMC phenotype.
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Affiliation(s)
- Jeffrey A. Beamish
- Department of Biomedical Engineering, Case Western Reserve University, Cleveland, OH 44106, USA
| | - Alexander Fu
- Department of Biomedical Engineering, Case Western Reserve University, Cleveland, OH 44106, USA
| | - Ae-jin Choi
- Department of Biomedical Engineering, Case Western Reserve University, Cleveland, OH 44106, USA
| | - Nada Haq
- Department of Biomedical Engineering, Case Western Reserve University, Cleveland, OH 44106, USA
| | - Kandice Kottke-Marchant
- Department of Biomedical Engineering, Case Western Reserve University, Cleveland, OH 44106, USA
- Pathology and Laboratory Medicine Institute, Cleveland Clinic, Cleveland, OH 44195, USA
| | - Roger E. Marchant
- Department of Biomedical Engineering, Case Western Reserve University, Cleveland, OH 44106, USA
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32
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Beamish JA, Geyer LC, Haq-Siddiqi NA, Kottke-Marchant K, Marchant RE. The effects of heparin releasing hydrogels on vascular smooth muscle cell phenotype. Biomaterials 2009; 30:6286-94. [PMID: 19709740 DOI: 10.1016/j.biomaterials.2009.08.004] [Citation(s) in RCA: 66] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2009] [Accepted: 08/02/2009] [Indexed: 11/24/2022]
Abstract
Poly(ethylene glycol) diacrylate (PEGDA) hydrogel scaffolds were engineered to promote contractile smooth muscle cell (SMC) phenotype via controlled release of heparin. The scaffold design was evaluated by quantifying the effects of free heparin on SMC phenotype, engineering hydrogels to provide controlled release of heparin, and synthesizing cell-adhesive, heparin releasing hydrogels to promote contractile SMC phenotype. Heparin inhibited SMC proliferation and up-regulated expression of contractile SMC phenotype markers, including smooth muscle alpha-actin, calponin, and SM-22alpha, in a dose-dependent fashion (6 microg/ml to 3.2mg/ml). Heparin release from PEGDA hydrogels was controlled by altering PEGDA molecular weight (MW 1000-6000) and concentration at polymerization (10-30% w/w), yielding release profiles ranging from hours to weeks in duration. Heparin released from PEGDA gels, formulated for optimized heparin loading and release kinetics (30% w/w PEGDA, MW 3000), stimulated SMCs to up-regulate contractile marker mRNA. A cell-instructive scaffold construct was prepared by polymerizing a thin hydrogel film, with pendant RGD peptides for cell attachment, over the optimized hydrogel depots. SMCs seeded on these constructs had elevated levels of contractile marker mRNA after 3 d of culture compared with SMCs on control constructs. These results indicate that RGD-modified, heparin releasing PEGDA gels can act as cell-instructive scaffolds that promote contractile SMC phenotype.
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Affiliation(s)
- Jeffrey A Beamish
- Department of Biomedical Engineering, Case Western Reserve University, 10900 Euclid Ave., Wickenden 205, Cleveland, OH 44106, USA
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Lemon G, Howard D, Tomlinson MJ, Buttery LD, Rose FRAJ, Waters SL, King JR. Mathematical modelling of tissue-engineered angiogenesis. Math Biosci 2009; 221:101-20. [PMID: 19619562 DOI: 10.1016/j.mbs.2009.07.003] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2008] [Revised: 01/30/2009] [Accepted: 07/09/2009] [Indexed: 10/20/2022]
Abstract
We present a mathematical model for the vascularisation of a porous scaffold following implantation in vivo. The model is given as a set of coupled non-linear ordinary differential equations (ODEs) which describe the evolution in time of the amounts of the different tissue constituents inside the scaffold. Bifurcation analyses reveal how the extent of scaffold vascularisation changes as a function of the parameter values. For example, it is shown how the loss of seeded cells arising from slow infiltration of vascular tissue can be overcome using a prevascularisation strategy consisting of seeding the scaffold with vascular cells. Using certain assumptions it is shown how the system can be simplified to one which is partially tractable and for which some analysis is given. Limited comparison is also given of the model solutions with experimental data from the chick chorioallantoic membrane (CAM) assay.
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Affiliation(s)
- Greg Lemon
- School of Mathematical Sciences, University of Nottingham, University Park, Nottingham NG7 2RD, UK
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de Mel A, Jell G, Stevens MM, Seifalian AM. Biofunctionalization of biomaterials for accelerated in situ endothelialization: a review. Biomacromolecules 2008; 9:2969-79. [PMID: 18831592 DOI: 10.1021/bm800681k] [Citation(s) in RCA: 287] [Impact Index Per Article: 17.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
The higher patency rates of cardiovascular implants, including vascular bypass grafts, stents, and heart valves are related to their ability to inhibit thrombosis, intimal hyperplasia, and calcification. In native tissue, the endothelium plays a major role in inhibiting these processes. Various bioengineering research strategies thereby aspire to induce endothelialization of graft surfaces either prior to implantation or by accelerating in situ graft endothelialization. This article reviews potential bioresponsive molecular components that can be incorporated into (and/or released from) biomaterial surfaces to obtain accelerated in situ endothelialization of vascular grafts. These molecules could promote in situ endothelialization by the mobilization of endothelial progenitor cells (EPC) from the bone marrow, encouraging cell-specific adhesion (endothelial cells (EC) and/or EPC) to the graft and, once attached, by controlling the proliferation and differentiation of these cells. EC and EPC interactions with the extracellular matrix continue to be a principal source of inspiration for material biofunctionalization, and therefore, the latest developments in understanding these interactions will be discussed.
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Affiliation(s)
- Achala de Mel
- Centre of Nanotechnology, Biomaterials and Tissue Engineering, UCL Division of Surgery & Interventional Science, University College London, London, United Kingdom
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Hu X, Shen H, Yang F, Bei J, Wang S. Preparation and cell affinity of microtubular orientation-structured PLGA(70/30) blood vessel scaffold. Biomaterials 2008; 29:3128-36. [PMID: 18439673 DOI: 10.1016/j.biomaterials.2008.04.010] [Citation(s) in RCA: 73] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2008] [Accepted: 04/01/2008] [Indexed: 10/22/2022]
Abstract
In this study, a kind of microtubular orientation-structured blood vessel mimicking natural structure was fabricated with poly(lactide-co-glycolide)(70/30) (PLGA(70/30)) solutions in 1,4-dioxane by an improved thermal-induced phase separation (TIPS) technique. The effect of main factors of the TIPS technique, such as environmental temperature, temperature gradient and concentration of the polymer solution on the structure and morphology of formed vessel scaffold was investigated. It was observed that the outer-wall of the scaffold became thick obviously and the microtubules neighboring the outer-wall became disordered with environmental temperature increasing. The diameter of microtubules of vessel scaffolds reduced with temperature gradient increasing or concentration of the polymer solution increasing. By controlling parameters of the TIPS, the scaffolds with various morphologies could be manufactured, which had different diameters of microtubules. On the other hand, inner-diameter and outer-diameter of the vessel scaffolds could be controlled by adjusting size of the polyethylene mould. Cell affinity of the scaffolds was tested in vitro by using A10 cell as model cells. Results showed that the cells grew well in the vessel scaffolds which were modified by ammonia plasma treatment and then anchored with collagen. The cells could array along the direction of the microtubules.
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Affiliation(s)
- Xixue Hu
- BNLMS, State Key Laboratory of Polymer Physics and Chemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080, China
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Construction and characterization of a thrombin-resistant designer FGF-based collagen binding domain angiogen. Biomaterials 2007; 29:327-36. [PMID: 17950455 DOI: 10.1016/j.biomaterials.2007.09.034] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2007] [Accepted: 09/23/2007] [Indexed: 11/21/2022]
Abstract
Humans demonstrate limited spontaneous endothelialization of prosthetic bypass grafts. However the local application of growth factors to prosthetic grafts or to injured blood vessels can provide an immediate effect on endothelialization. Novel chimeric proteins combining potent angiogens with extracellular matrix binding domains may localize to exposed matrices and provide sustained activity to promote endothelial regeneration after vascular interventions. We have ligated a thrombin-resistant mutant of fibroblast growth factor (FGF)-1 (R136K) with a collagen binding domain (CBD) in order to direct this growth factor to sites of exposed vascular collagen or selected bioengineered scaffolds. While FGF-1 and R136K are readily attracted to a variety of matrix proteins, R136K-CBD demonstrated selective and avid binding to collagen approximately 4x that of FGF-1 or R136K alone (P<0.05). The molecular stability of R136K-CBD was superior to FGF-1 and R136K. Its chemotactic activity was superior to R136K and FGF-1 (11+/-1% vs. 6+/-2% and 4+/-1%; P<0.01). Its angiogenic activity was similar to R136K and significantly greater than control by day 2 (P<0.01). After day 3, FGF-1-treated endothelial cell's (EC) sprouts had regressed back to levels insignificant compared to the control group (P=0.17), while both R136K and R136K-CBD continued to demonstrate greater sprout lengthening as compared to control (P<0.0002). The mitogenic activity of all growth factors was greater than control groups (20% PBS); in all comparisons (P<0.0001). This dual functioning angiogen provides proof of concept for the application of designer angiogens to matrix binding proteins to intelligently promote endothelial regeneration of selected matrices.
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