1
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Zhang W, Fukazawa K, Mahara A, Le HT, Soni R, Yamaoka T. Reliable Surface Modification of ePTFE Using a Photoreactive Hemocompatible Peptide to Promote Endothelial Affinity and Antiplatelet Efficacy. ACS Biomater Sci Eng 2025. [PMID: 40325826 DOI: 10.1021/acsbiomaterials.5c00236] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/07/2025]
Abstract
Expanded polytetrafluoroethylene (ePTFE) is a widely used material in diverse medical devices, particularly in the cardiovascular system, owing to its chemical stability and suitable mechanical properties. However, the chemical inertness makes surface modification difficult. In the present study, modification of ePTFE with a peptide was successfully achieved based on a unique photoreaction technique. We previously screened the hemocompatible peptide (HCP), histidine-glycine-glycine-valine-arginine-leucine-tyrosine (HGGVRLY), with high endothelial affinity and antiplatelet ability as modifying molecules. We synthesized a photoreactive peptide by combining a phenylazide group with the HCP, which was subsequently immobilized on the ePTFE surface through a short UV exposure time after argon plasma (Ar) treatment. Cross-sectional images of the surface modified with fluorescent-labeled photoreactive HCP showed efficient modification even within the pores of ePTFE. In vitro assessment revealed that modification improved the endothelial affinity of ePTFE approximately 5-fold while preventing platelet adhesion and aggregation. The ePTFE grafts were further implanted into an in situ porcine closed-circuit system for the blood contact assessment. Comparative investigations with untreated ePTFE grafts indicated that the modified ePTFE surface attracted more cells positive for CD14, CD16, CD34, and macrophage markers while concurrently exhibiting reduced platelet adhesion. In conclusion, photoreactive HCP proved to be a simple and effective strategy for modifying the ePTFE surface, resulting in enhanced hemocompatibility characterized by increased endothelial and monocyte recruitment as well as antiplatelet attachment on the modified ePTFE graft surface.
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Affiliation(s)
- Wei Zhang
- National Cerebral and Cardiovascular Center Research Institute, 6-1 Kishibe Shim-machi, Suita, Osaka 564-8565, Japan
- Plastic Surgery Hospital, Chinese Academy of Medical Science and Peking Union Medical College, Beijing 100144, China
| | - Kyoko Fukazawa
- National Cerebral and Cardiovascular Center Research Institute, 6-1 Kishibe Shim-machi, Suita, Osaka 564-8565, Japan
| | - Atsushi Mahara
- National Cerebral and Cardiovascular Center Research Institute, 6-1 Kishibe Shim-machi, Suita, Osaka 564-8565, Japan
| | - Hue Thi Le
- National Cerebral and Cardiovascular Center Research Institute, 6-1 Kishibe Shim-machi, Suita, Osaka 564-8565, Japan
| | - Raghav Soni
- National Cerebral and Cardiovascular Center Research Institute, 6-1 Kishibe Shim-machi, Suita, Osaka 564-8565, Japan
| | - Tetsuji Yamaoka
- National Cerebral and Cardiovascular Center Research Institute, 6-1 Kishibe Shim-machi, Suita, Osaka 564-8565, Japan
- Department of Clinical Engineering, Faculty of Health Sciences, Komatsu University, He 14-1, Mukai-motoori-machi, Komatsu, Ishikawa 923-0961, Japan
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2
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Xiao D, Mi X, Wang Q, Chen S, Chen R, Zhao Y, Liu Y, Wei D. Advancements in manufacturing technologies in the small-diameter artificial blood vessels field. Biomed Mater 2025; 20:032005. [PMID: 40199337 DOI: 10.1088/1748-605x/adca7b] [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: 10/08/2024] [Accepted: 04/08/2025] [Indexed: 04/10/2025]
Abstract
Cardiovascular diseases (CVD) can cause narrowing or blockage in small diameter blood vessels (less than 6 millimeters in diameter). Bypass surgery, which involves replacing damaged native blood vessels, can address various CVD. Recent advancements in manufacturing techniques and the application of new materials have led to the creation of artificial blood vessels that more closely resemble native vessels. By combining different materials and manufacturing methods, it is possible to mimic the structure and function of native blood vessels. Surface coating technologies are also employed in the production of artificial blood vessels to replicate certain vascular functions, such as regulating thrombosis and dissolution. Although most products are not yet ready for clinical use, research and development in artificial blood vessels are progressing faster than ever before (figure1).
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Affiliation(s)
- Di Xiao
- Department of Cardiovascular Medicine, Guangxi University of Chinese Medicine, Nanning 530000, Guangxi Zhuang Autonomous Region, People's Republic of China
| | - Xuelian Mi
- Institute of Biomedical Engineering, College of Medicine, Southwest Jiao Tong University, Chengdu 610031, Sichuan, People's Republic of China
| | - Qian Wang
- Department of Orthopedics, The First Affiliated Hospital of Dalian Medical University, Dalian 116011, Liaoning, People's Republic of China
| | - Shaojun Chen
- Department of Cardiovascular Medicine, Guangxi University of Chinese Medicine, Nanning 530000, Guangxi Zhuang Autonomous Region, People's Republic of China
| | - Rongtao Chen
- Department of Cardiovascular Medicine, Guangxi University of Chinese Medicine, Nanning 530000, Guangxi Zhuang Autonomous Region, People's Republic of China
| | - Yongjie Zhao
- School of Clinical Medicine, Jining Medical University, 272013 Jining, Shandong, People's Republic of China
| | - Yihao Liu
- Shanghai Key Laboratory of Orthopedic Implant, Department of Orthopedic Surgery Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200011, People's Republic of China
| | - Dongmei Wei
- Department of Cardiovascular Medicine, Guangxi University of Chinese Medicine, Nanning 530000, Guangxi Zhuang Autonomous Region, People's Republic of China
- Liuzhou Traditional Chinese Medical Hospital, The Third Affiliated Hospital of Guangxi University of Chinese Medicine, Liuzhou 545001, Guangxi Zhuang Autonomous Region, People's Republic of China
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3
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Wu Q, Guo S, Liang X, Sun W, Lei J, Pan L, Liu X, Chen H. Endothelium-Inspired Hemocompatible Silicone Surfaces: An Elegant Balance between Antifouling Properties and Endothelial Cell Selectivity. Biomacromolecules 2024; 25:7202-7215. [PMID: 39190804 DOI: 10.1021/acs.biomac.4c00890] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/29/2024]
Abstract
To address the adverse reactions caused by the implantation of blood-contacting materials, researchers have developed different strategies, of which mimicking multiple key features of endothelial cells is the most effective. However, simultaneously immobilizing multiple chemical components on a single material surface and maintaining the effects of individual components are challenging. In this work, endothelium-mimicking silicone surfaces were developed by incorporating the antifouling polymer poly(oligo(ethylene glycol) methacrylate), the glycosaminoglycan analog poly(sodium 4-vinyl-benzenesulfonate) and a nitric oxide catalyst (selenocystamine dihydrochloride). Through the rational regulation of multiple chemical components, the surfaces harmoniously resisted nonspecific protein adsorption, platelet adhesion and activation and smooth muscle cell hyperproliferation while promoting endothelial cell proliferation and migration. The coculture experiment with HUVECs and HUVSMCs showed that the optimum selectivity of HUVECs/HUVSMCs was ∼1.7. This work contributes insight into the control of antifouling properties and endothelial selectivity, providing a new avenue for the development of blood-contacting materials.
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Affiliation(s)
- Qiulian Wu
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, PR China
| | - Shuaihang Guo
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, PR China
| | - Xinyi Liang
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, PR China
| | - Wei Sun
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, PR China
| | - Jiao Lei
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, PR China
| | - Lisha Pan
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, PR China
| | - Xiaoli Liu
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, PR China
| | - Hong Chen
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, PR China
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4
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Yilmaz G. Foundational Engineering of Artificial Blood Vessels' Biomechanics: The Impact of Wavy Geometric Designs. Biomimetics (Basel) 2024; 9:546. [PMID: 39329568 PMCID: PMC11430736 DOI: 10.3390/biomimetics9090546] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2024] [Revised: 08/21/2024] [Accepted: 09/06/2024] [Indexed: 09/28/2024] Open
Abstract
The design of wavy structures and their mechanical implications on artificial blood vessels (ABVs) have been insufficiently studied in the existing literature. This research aims to explore the influence of various wavy geometric designs on the mechanical properties of ABVs and to establish a foundational framework for advancing and applying these designs. Computer-aided design (CAD) and finite element method (FEM) simulations, in conjunction with physical sample testing, were utilized. A geometric model incorporating concave and convex curves was developed and analyzed with a symbolic mathematical tool. Subsequently, a total of ten CAD models were subjected to increasing internal pressures using a FEM simulation to evaluate the expansion of internal areas. Additionally, physical experiments were conducted further to investigate the expansion of ABV samples under pressure. The results demonstrated that increased wave numbers significantly enhance the flexibility of ABVs. Samples with 22 waves exhibited a 45% larger area under 24 kPa pressure than those with simple circles. However, the increased number of waves also led to undesirable high-pressure gradients at elevated pressures. Furthermore, a strong correlation was observed between the experimental outcomes and the simulation results, with a notably low error margin, ranging from 19.88% to 3.84%. Incorporating wavy designs into ABVs can effectively increase both vessel flexibility and the internal area under pressure. Finally, it was found that expansion depending on the wave number can be efficiently modeled with a simple linear equation, which could be utilized in future designs.
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Affiliation(s)
- Galip Yilmaz
- Electronics and Automation Department, Bayburt University, Bayburt 69000, Turkey
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5
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Hao D, Lin J, Liu R, Pivetti C, Yamashiro K, Schutzman LM, Sageshima J, Kwong M, Bahatyrevich N, Farmer DL, Humphries MD, Lam KS, Panitch A, Wang A. A bio-instructive parylene-based conformal coating suppresses thrombosis and intimal hyperplasia of implantable vascular devices. Bioact Mater 2023; 28:467-479. [PMID: 37408799 PMCID: PMC10318457 DOI: 10.1016/j.bioactmat.2023.06.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2023] [Revised: 06/17/2023] [Accepted: 06/19/2023] [Indexed: 07/07/2023] Open
Abstract
Implantable vascular devices are widely used in clinical treatments for various vascular diseases. However, current approved clinical implantable vascular devices generally have high failure rates primarily due to their surface lacking inherent functional endothelium. Here, inspired by the pathological mechanisms of vascular device failure and physiological functions of native endothelium, we developed a new generation of bioactive parylene (poly(p-xylylene))-based conformal coating to address these challenges of the vascular devices. This coating used a polyethylene glycol (PEG) linker to introduce an endothelial progenitor cell (EPC) specific binding ligand LXW7 (cGRGDdvc) onto the vascular devices for preventing platelet adhesion and selectively capturing endogenous EPCs. Also, we confirmed the long-term stability and function of this coating in human serum. Using two vascular disease-related large animal models, a porcine carotid artery interposition model and a porcine carotid artery-jugular vein arteriovenous graft model, we demonstrated that this coating enabled rapid generation of self-renewable "living" endothelium on the blood contacting surface of the expanded polytetrafluoroethylene (ePTFE) grafts after implantation. We expect this easy-to-apply conformal coating will present a promising avenue to engineer surface properties of "off-the-shelf" implantable vascular devices for long-lasting performance in the clinical settings.
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Affiliation(s)
- Dake Hao
- Department of Surgery, School of Medicine, University of California Davis, Sacramento, CA, 95817, United States
- Institute for Pediatric Regenerative Medicine, Shriners Hospitals for Children, Sacramento, CA, 95817, United States
| | - Jonathan Lin
- Department of Surgery, School of Medicine, University of California Davis, Sacramento, CA, 95817, United States
| | - Ruiwu Liu
- Department of Biochemistry and Molecular Medicine, School of Medicine, University of California Davis, Sacramento, CA, 95817, United States
| | - Christopher Pivetti
- Department of Surgery, School of Medicine, University of California Davis, Sacramento, CA, 95817, United States
- Institute for Pediatric Regenerative Medicine, Shriners Hospitals for Children, Sacramento, CA, 95817, United States
| | - Kaeli Yamashiro
- Department of Surgery, School of Medicine, University of California Davis, Sacramento, CA, 95817, United States
| | - Linda M. Schutzman
- Department of Surgery, School of Medicine, University of California Davis, Sacramento, CA, 95817, United States
| | - Junichiro Sageshima
- Department of Surgery, School of Medicine, University of California Davis, Sacramento, CA, 95817, United States
| | - Mimmie Kwong
- Department of Surgery, School of Medicine, University of California Davis, Sacramento, CA, 95817, United States
| | - Nataliya Bahatyrevich
- Department of Surgery, School of Medicine, University of California Davis, Sacramento, CA, 95817, United States
| | - Diana L. Farmer
- Department of Surgery, School of Medicine, University of California Davis, Sacramento, CA, 95817, United States
- Institute for Pediatric Regenerative Medicine, Shriners Hospitals for Children, Sacramento, CA, 95817, United States
| | - Misty D. Humphries
- Department of Surgery, School of Medicine, University of California Davis, Sacramento, CA, 95817, United States
| | - Kit S. Lam
- Department of Biochemistry and Molecular Medicine, School of Medicine, University of California Davis, Sacramento, CA, 95817, United States
| | - Alyssa Panitch
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, GA, 30332, United States
- Department of Biomedical Engineering, University of California Davis, Davis, CA, 95616, United States
| | - Aijun Wang
- Department of Surgery, School of Medicine, University of California Davis, Sacramento, CA, 95817, United States
- Institute for Pediatric Regenerative Medicine, Shriners Hospitals for Children, Sacramento, CA, 95817, United States
- Department of Biomedical Engineering, University of California Davis, Davis, CA, 95616, United States
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6
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Ding K, Yu X, Wang D, Wang X, Li Q. Small diameter expanded polytetrafluoroethylene vascular graft with differentiated inner and outer biomacromolecules for collaborative endothelialization, anti-thrombogenicity and anti-inflammation. Colloids Surf B Biointerfaces 2023; 229:113449. [PMID: 37506438 DOI: 10.1016/j.colsurfb.2023.113449] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2023] [Revised: 07/03/2023] [Accepted: 07/08/2023] [Indexed: 07/30/2023]
Abstract
Without differentiated inner and outer biological function, expanded polytetrafluoroethylene (ePTFE) small-diameter (<6 mm) artificial blood vessels would fail in vivo due to foreign body rejection, thrombosis, and hyperplasia. In order to synergistically promote endothelialization, anti-thrombogenicity, and anti-inflammatory function, we modified the inner and outer surface of ePTFE, respectively, by grafting functional biomolecules, such as heparin and epigallocatechin gallate (EGCG), into the inner surface and polyethyleneimine and rapamycin into the outer surface via layer-by-layer self-assembly. Fourier-transform infrared spectroscopy showed the successful incorporation of EGCG, heparin, and rapamycin. The collaborative release profile of heparin and rapamycin lasted for 42 days, respectively. The inner surface promoted human umbilical vein endothelial cells (HUVECs) adhesion and growth and that the outer surface inhibited smooth muscle cells growth and proliferation. The modified ePTFE effectively regulated the differentiation behavior of RAW264.7, inhibited the expression of proinflammatory mediator TNF-α, and up-regulated the expression of anti-inflammatory genes Arg1 and Tgfb-1. The ex vivo circulation results indicated that the occlusions and total thrombus weight of modified ePTFE was much lower than that of the thrombus formed on the ePTFE, presenting good anti-thrombogenic properties. Hence, the straightforward yet efficient synergistic surface functionalization approach presented a potential resolution for the prospective clinical application of small-diameter ePTFE blood vessel grafts.
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Affiliation(s)
- Kangjia Ding
- School of Materials science & Engineering, Zhengzhou University, Zhengzhou 450001, PR China; National Center for International Research of Micro-Nano Molding Technology, Zhengzhou University, Zhengzhou 450001, PR China
| | - Xueke Yu
- National Center for International Research of Micro-Nano Molding Technology, Zhengzhou University, Zhengzhou 450001, PR China
| | - Dongfang Wang
- National Center for International Research of Micro-Nano Molding Technology, Zhengzhou University, Zhengzhou 450001, PR China; School of Mechanics and safety Engineering, Zhengzhou University, Zhengzhou 450001, PR China.
| | - Xiaofeng Wang
- National Center for International Research of Micro-Nano Molding Technology, Zhengzhou University, Zhengzhou 450001, PR China; School of Mechanics and safety Engineering, Zhengzhou University, Zhengzhou 450001, PR China
| | - Qian Li
- National Center for International Research of Micro-Nano Molding Technology, Zhengzhou University, Zhengzhou 450001, PR China.
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7
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Li MX, Wei QQ, Mo HL, Ren Y, Zhang W, Lu HJ, Joung YK. Challenges and advances in materials and fabrication technologies of small-diameter vascular grafts. Biomater Res 2023; 27:58. [PMID: 37291675 PMCID: PMC10251629 DOI: 10.1186/s40824-023-00399-2] [Citation(s) in RCA: 22] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2023] [Accepted: 05/21/2023] [Indexed: 06/10/2023] Open
Abstract
The arterial occlusive disease is one of the leading causes of cardiovascular diseases, often requiring revascularization. Lack of suitable small-diameter vascular grafts (SDVGs), infection, thrombosis, and intimal hyperplasia associated with synthetic vascular grafts lead to a low success rate of SDVGs (< 6 mm) transplantation in the clinical treatment of cardiovascular diseases. The development of fabrication technology along with vascular tissue engineering and regenerative medicine technology allows biological tissue-engineered vascular grafts to become living grafts, which can integrate, remodel, and repair the host vessels as well as respond to the surrounding mechanical and biochemical stimuli. Hence, they potentially alleviate the shortage of existing vascular grafts. This paper evaluates the current advanced fabrication technologies for SDVGs, including electrospinning, molding, 3D printing, decellularization, and so on. Various characteristics of synthetic polymers and surface modification methods are also introduced. In addition, it also provides interdisciplinary insights into the future of small-diameter prostheses and discusses vital factors and perspectives for developing such prostheses in clinical applications. We propose that the performance of SDVGs can be improved by integrating various technologies in the near future.
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Affiliation(s)
- Mei-Xian Li
- National and Local Joint Engineering Research Center of Technical Fiber Composites for Safety and Protection, Nantong University, Nantong, 226019, China
- School of Textile and Clothing, Nantong University, Nantong, 226019, China
- Center for Biomaterials, Biomedical Research Institute, Korea Institute of Science and Technology, Seoul, 02792, Republic of Korea
| | - Qian-Qi Wei
- Department of Infectious Diseases, General Hospital of Tibet Military Command, Xizang, China
| | - Hui-Lin Mo
- School of Textile and Clothing, Nantong University, Nantong, 226019, China
| | - Yu Ren
- National and Local Joint Engineering Research Center of Technical Fiber Composites for Safety and Protection, Nantong University, Nantong, 226019, China
- School of Textile and Clothing, Nantong University, Nantong, 226019, China
| | - Wei Zhang
- National and Local Joint Engineering Research Center of Technical Fiber Composites for Safety and Protection, Nantong University, Nantong, 226019, China.
- School of Textile and Clothing, Nantong University, Nantong, 226019, China.
| | - Huan-Jun Lu
- Institute of Special Environmental Medicine, Nantong University, Nantong, 226019, China.
| | - Yoon Ki Joung
- Center for Biomaterials, Biomedical Research Institute, Korea Institute of Science and Technology, Seoul, 02792, Republic of Korea.
- Division of Bio-Medical Science and Technology, University of Science and Technology (UST), 217 Gajeong-ro, Yuseong-gu, Daejeon, 34113, Republic of Korea.
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8
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Hu G, Li G, Chen L, Hong FF. Production of novel elastic bacterial nanocellulose/polyvinyl alcohol conduits via mercerization and phase separation for small-caliber vascular grafts application. Int J Biol Macromol 2023; 239:124221. [PMID: 36990400 DOI: 10.1016/j.ijbiomac.2023.124221] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2023] [Revised: 03/10/2023] [Accepted: 03/24/2023] [Indexed: 03/29/2023]
Abstract
Size and properties of tubular bacterial nanocellulose (BNC) can be regulated by controllable mercerization with thinner tube walls, better mechanical properties, and improved biocompatibility. Although mercerized BNC (MBNC) conduits have considerable potential as small-caliber vascular grafts (<6 mm), poor suture retention and lack of compliance that cannot match natural blood vessels increase the difficulty of surgery and limit potential clinical application. Polyvinyl alcohol (PVA) is a kind of hydrophilic polymer with good biocompatibility and elasticity, which can precipitate in alkaline solutions. In this study, novel elastic mercerized BNC/PVA conduits (MBP) are manufactured combining mercerization of BNC tubes with precipitation and phase separation of PVA with thinner tube wall, improved suture retention, better elasticity, good hemocompatibility and great cytocompatibility. The MBP obtained with 12.5 % PVA is selected for transplantation in a rat abdominal aorta model. For 32 weeks, normal blood flow is observed using Doppler sonographic inspection, which demonstrates long-term patency. Immunofluorescence staining results also indicate the formation of endothelium and smooth muscle layers. The results indicate the introduction of PVA, and its phase separation into mercerization of tubular BNC can endow MBP conduits with better compliance and suture retention, making it a promising candidate for blood vessel replacement.
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Affiliation(s)
- Gaoquan Hu
- College of Biological Science and Medical Engineering, Donghua University, No. 2999 North Renmin Road, Shanghai 201620, China
| | - Geli Li
- College of Biological Science and Medical Engineering, Donghua University, No. 2999 North Renmin Road, Shanghai 201620, China
| | - Lin Chen
- College of Biological Science and Medical Engineering, Donghua University, No. 2999 North Renmin Road, Shanghai 201620, China; National Advanced Functional Fiber Innovation Center, Wu Jiang, Su Zhou, China
| | - Feng F Hong
- College of Biological Science and Medical Engineering, Donghua University, No. 2999 North Renmin Road, Shanghai 201620, China; National Advanced Functional Fiber Innovation Center, Wu Jiang, Su Zhou, China; Shanghai Engineering Research Center of Nano-Biomaterials and Regenerative Medicine, Donghua University, Shanghai 201620, China.
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9
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Zia AW, Liu R, Wu X. Structural design and mechanical performance of composite vascular grafts. Biodes Manuf 2022. [DOI: 10.1007/s42242-022-00201-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
AbstractThis study reviews the state of the art in structural design and the corresponding mechanical behaviours of composite vascular grafts. We critically analyse surface and matrix designs composed of layered, embedded, and hybrid structures along the radial and longitudinal directions; materials and manufacturing techniques, such as tissue engineering and the use of textiles or their combinations; and the corresponding mechanical behaviours of composite vascular grafts in terms of their physical–mechanical properties, especially their stress–strain relationships and elastic recovery. The role of computational studies is discussed with respect to optimizing the geometrics designs and the corresponding mechanical behaviours to satisfy specialized applications, such as those for the aorta and its subparts. Natural and synthetic endothelial materials yield improvements in the mechanical and biological compliance of composite graft surfaces with host arteries. Moreover, the diameter, wall thickness, stiffness, compliance, tensile strength, elasticity, and burst strength of the graft matrix are determined depending on the application and the patient. For composite vascular grafts, hybrid architectures are recommended featuring multiple layers, dimensions, and materials to achieve the desired optimal flexibility and function for complying with user-specific requirements. Rapidly emerging artificial intelligence and big data techniques for diagnostics and the three-dimensional (3D) manufacturing of vascular grafts will likely yield highly compliant, subject-specific, long-lasting, and economical vascular grafts in the near-future.
Graphic abstract
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10
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Yurkov GY, Kozinkin AV, Shvachko OV, Kubrin SP, Ovchenkov EA, Korobov MS, Kirillov VE, Osipkov AS, Makeev MO, Ryzhenko DS, Solodilov VI, Burakova EA, Bouznik VM. One
‐step synthesis of composite materials based on polytetrafluoroethylene microgranules and Co@
Fe
2
O
3
‐FeF
2
nanoparticles. J Appl Polym Sci 2022. [DOI: 10.1002/app.52890] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Gleb Yu. Yurkov
- Semenov Federal Research Center Chemical Physics Russian Academy of Sciences Moscow Russian Federation
- Bauman Moscow State Technical University Moscow Russian Federation
| | | | | | | | | | - Maxim S. Korobov
- Bauman Moscow State Technical University Moscow Russian Federation
| | - Vladislav E. Kirillov
- Semenov Federal Research Center Chemical Physics Russian Academy of Sciences Moscow Russian Federation
| | | | | | | | - Vitaly I. Solodilov
- Semenov Federal Research Center Chemical Physics Russian Academy of Sciences Moscow Russian Federation
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11
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12
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Guo M, Wang X, Liu Y, Yu H, Dong J, Cui Z, Bai Z, Li K, Li Q. Hierarchical Shish-Kebab Structures Functionalizing Nanofibers for Controlled Drug Release and Improved Antithrombogenicity. Biomacromolecules 2022; 23:1337-1349. [PMID: 35235295 DOI: 10.1021/acs.biomac.1c01572] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
The functionalization of the fibrous scaffolds including drug loading and release is of significance in tissue engineering and regenerative medicine. Our previous results have shown that the shish-kebab structure-modified fibrous scaffold shows a completely different microenvironment that mimics the topography of the collagen fibers, which interestingly facilitates the cell adhesion and migration. However, the functionalization of the unique structure needs to be further investigated. In this study, we modified the heparin-loaded fiber with a shish-kebab structure and tuned the kebab structure as the barrier for the sustained release of heparin. The introduction of the kebab structure increases the diffusion energy barrier by extending the diffusion distance. Moreover, the discontinued surface topography of the shish-kebab structure altered the surface chemistry from hydrophobic for the original poly(ε-caprolactone) (PCL) nanofibers to hydrophilic for the PCL nanofibers with the shish-kebab structure, which might have inhibited the activation of fibrinogen and thus improved the anticoagulant ability. This synergistic effect of heparin and the kebab structure significantly promotes the endothelial cell affinity and antithrombogenicity. This method might be a viable and versatile drug delivery strategy in vascular tissue engineering.
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Affiliation(s)
- Meng Guo
- School of Mechanics and Safety Engineering, Zhengzhou University, Zhengzhou 450001, China.,National Center for International Research of Micro-Nano Molding Technology, Zhengzhou University, Zhengzhou 450001, China
| | - Xiaofeng Wang
- School of Mechanics and Safety Engineering, Zhengzhou University, Zhengzhou 450001, China.,National Center for International Research of Micro-Nano Molding Technology, Zhengzhou University, Zhengzhou 450001, China
| | - Yajing Liu
- School of Mechanics and Safety Engineering, Zhengzhou University, Zhengzhou 450001, China.,National Center for International Research of Micro-Nano Molding Technology, Zhengzhou University, Zhengzhou 450001, China
| | - Haichang Yu
- School of Mechanics and Safety Engineering, Zhengzhou University, Zhengzhou 450001, China
| | - Jiahui Dong
- National Center for International Research of Micro-Nano Molding Technology, Zhengzhou University, Zhengzhou 450001, China.,School of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450001, China
| | - Zhixiang Cui
- Department of Materials Science and Engineering, Fujian University of Technology, Fuzhou 350118, China
| | - Zhiyuan Bai
- School of Mechanics and Safety Engineering, Zhengzhou University, Zhengzhou 450001, China.,National Center for International Research of Micro-Nano Molding Technology, Zhengzhou University, Zhengzhou 450001, China
| | - Kecheng Li
- School of Mechanics and Safety Engineering, Zhengzhou University, Zhengzhou 450001, China.,National Center for International Research of Micro-Nano Molding Technology, Zhengzhou University, Zhengzhou 450001, China
| | - Qian Li
- School of Mechanics and Safety Engineering, Zhengzhou University, Zhengzhou 450001, China.,National Center for International Research of Micro-Nano Molding Technology, Zhengzhou University, Zhengzhou 450001, China
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13
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Wang L, Wang C, Zhou L, Bi Z, Shi M, Wang D, Li Q. Fabrication of a novel Three-Dimensional porous PCL/PLA tissue engineering scaffold with high connectivity for endothelial cell migration. Eur Polym J 2021. [DOI: 10.1016/j.eurpolymj.2021.110834] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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14
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Xing Z, Wu S, Zhao C, Bai Y, Jin D, Yin M, Liu H, Fan Y. Vascular transplantation with dual-biofunctional ePTFE vascular grafts in a porcine model. J Mater Chem B 2021; 9:7409-7422. [PMID: 34551061 DOI: 10.1039/d1tb01398j] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Cardiovascular disease (CVD) poses serious health concerns worldwide. The lack of transplantable vascular grafts is an unmet clinical need in the surgical treatment of CVD. Although expanded polytetrafluoroethylene (ePTFE) vascular grafts have been used in clinical practice, a low long-term patency rate in small-diameter transplantation application is still the biggest challenge. Thus, surface modification of ePTFE is sought after. In this study, polydopamine (PDA) was used to improve the hydrophilia and provide immobilization sites in ePTFE. Bivalirudin (BVLD), a direct thrombin inhibitor, was used to enhance the anti-thrombotic activity of ePTFE. The peptides derived from extracellular matrix proteins were used to elevate the bioactivity of ePTFE. The morphology, chemical composition, peptide modified strength, wettability, and hemocompatibility of modified ePTFE vascular grafts were investigated. Then, an endothelial cell proliferation assay was used to evaluate the best co-modification strategy of the ePTFE vascular graft in vitro. Since a large animal could relatively better mimic human physiology, we chose a porcine carotid artery replacement model in the current study. The results showed that the BVLD/REDV co-modified ePTFE vascular grafts had a satisfactory patency rate (66.7%) and a higher endothelial cell coverage ratio (70%) at 12 weeks after implantation. This may offer an opportunity to produce a multi-biofunctional ePTFE vascular graft, thereby yielding a potent product to meet the clinical needs.
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Affiliation(s)
- Zheng Xing
- Key Laboratory for Biomechanics and Mechanobiology (Beihang University) of Ministry of Education, Beijing Advanced Innovation Center for Biomedical Engineering, School of Biological Science and Medical Engineering, Beihang University, Beijing, 100083, P. R. China.
| | - Shuting Wu
- Department of Cardiothoracic Surgery, Shanghai Children's Medical Center, School of Medicine, Shanghai Jiao Tong University, Shanghai 200127, P. R. China.
| | - Chen Zhao
- School of Pharmaceutical Sciences, Tsinghua University, Beijing, 100084, P. R. China
| | - Yating Bai
- Key Laboratory for Biomechanics and Mechanobiology (Beihang University) of Ministry of Education, Beijing Advanced Innovation Center for Biomedical Engineering, School of Biological Science and Medical Engineering, Beihang University, Beijing, 100083, P. R. China.
| | - Dawei Jin
- Department of Cardiothoracic Surgery, Shanghai Children's Medical Center, School of Medicine, Shanghai Jiao Tong University, Shanghai 200127, P. R. China.
| | - Meng Yin
- Department of Cardiothoracic Surgery, Shanghai Children's Medical Center, School of Medicine, Shanghai Jiao Tong University, Shanghai 200127, P. R. China.
| | - Haifeng Liu
- Key Laboratory for Biomechanics and Mechanobiology (Beihang University) of Ministry of Education, Beijing Advanced Innovation Center for Biomedical Engineering, School of Biological Science and Medical Engineering, Beihang University, Beijing, 100083, P. R. China.
| | - Yubo Fan
- Key Laboratory for Biomechanics and Mechanobiology (Beihang University) of Ministry of Education, Beijing Advanced Innovation Center for Biomedical Engineering, School of Biological Science and Medical Engineering, Beihang University, Beijing, 100083, P. R. China.
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15
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Stepwise immobilization of keratin-dopamine conjugates and gold nanoparticles on PET sheets for potential vascular graft with the catalytic generation of nitric oxide. Colloids Surf B Biointerfaces 2021; 205:111855. [PMID: 34087777 DOI: 10.1016/j.colsurfb.2021.111855] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2021] [Revised: 05/12/2021] [Accepted: 05/13/2021] [Indexed: 12/13/2022]
Abstract
Gold nanoparticles(AuNPs) are capable to catalyze the nitric oxide (NO) generation from endogenous and exogenous donors, thereby promoting re-endothelialization and inhibiting intimal hyperplasia and thrombosis. Herein, keratin-dopamine conjugates were synthesized and then immobilized on the surface of the pre-aminolyzed poly(ethylene terephthalate) (PET) via self-polymerization of dopamine residue, following by the formation of AuNPs in situ without extra reductant. The modified PET sheets(PET-AuNPs) could promote the growth of HUVECs while inhibit the proliferation of HUASMCs due to their catalytic generation of NO from GSNO. In addition, these sheets exhibited antibacterial properties and good blood compatibility without hemolysis. Taken together, this strategy for designing prosthetic vascular grafts to treat cardiovascular diseases has great potential.
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16
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Tao C, Wang D. Tissue Engineering for Mimics and Modulations of Immune Functions. Adv Healthc Mater 2021; 10:e2100146. [PMID: 33871178 DOI: 10.1002/adhm.202100146] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2021] [Revised: 03/21/2021] [Indexed: 11/12/2022]
Abstract
In the field of regenerative medicine, advances in tissue engineering have surpassed the reconstruction of individual tissues or organs and begun to work towards engineering systemic factors such as immune objects and functions. The immune system plays a crucial role in protecting and regulating systemic functions in the human body. Engineered immune tissues and organs have shown potential in recovering dysfunctions and aplasia of the immune system and the evasion from immune-mediated inflammatory responses and rejection elicited by engineered implants from allogeneic or xenogeneic sources are also being pursued to facilitate clinical transplantation of tissue engineered grafts. Here, current progress in tissue engineering to mimic or modulate immune functions is reviewed and elaborated from two perspectives: 1) engineering of immune tissues and organs per se and 2) immune evasion of host immunoinflammatory rejection by tissue-engineered implants.
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Affiliation(s)
- Chao Tao
- Department of Biomedical Engineering City University of Hong Kong 83 Tat Chee Avenue Kowloon Hong Kong SAR China
| | - Dong‐An Wang
- Department of Biomedical Engineering City University of Hong Kong 83 Tat Chee Avenue Kowloon Hong Kong SAR China
- Karolinska Institute Ming Wai Lau Centre for Reparative Medicine HKSTP Sha Tin Hong Kong SAR China
- Shenzhen Research Institute City University of Hong Kong Shenzhen 518057 P. R. China
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17
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Schmidt GA, Lin Y, Xu Y, Wang D, Yilmaz G, Turng L. Viscosity characterization and flow simulation and visualization of polytetrafluoroethylene paste extrusion using a green and biofriendly lubricant. POLYM ENG SCI 2021; 61:1050-1065. [DOI: 10.1002/pen.25632] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- George A. Schmidt
- Polymer Engineering Center, Department of Mechanical Engineering University of Wisconsin–Madison Madison Wisconsin USA
- Wisconsin Institute for Discovery University of Wisconsin–Madison Madison Wisconsin USA
| | - Yu‐Jyun Lin
- Polymer Engineering Center, Department of Mechanical Engineering University of Wisconsin–Madison Madison Wisconsin USA
- Wisconsin Institute for Discovery University of Wisconsin–Madison Madison Wisconsin USA
| | - Yiyang Xu
- Polymer Engineering Center, Department of Mechanical Engineering University of Wisconsin–Madison Madison Wisconsin USA
- Wisconsin Institute for Discovery University of Wisconsin–Madison Madison Wisconsin USA
| | - Dongfang Wang
- Polymer Engineering Center, Department of Mechanical Engineering University of Wisconsin–Madison Madison Wisconsin USA
- Wisconsin Institute for Discovery University of Wisconsin–Madison Madison Wisconsin USA
- School of Mechanics and Engineering Science Zhengzhou University Zhengzhou China
- National Center for International Research of Micro‐Nano Molding Technology Zhengzhou University Zhengzhou China
| | - Galip Yilmaz
- Polymer Engineering Center, Department of Mechanical Engineering University of Wisconsin–Madison Madison Wisconsin USA
- Wisconsin Institute for Discovery University of Wisconsin–Madison Madison Wisconsin USA
| | - Lih‐Sheng Turng
- Polymer Engineering Center, Department of Mechanical Engineering University of Wisconsin–Madison Madison Wisconsin USA
- Wisconsin Institute for Discovery University of Wisconsin–Madison Madison Wisconsin USA
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18
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Zhang B, Wang X, Wang D, Guo M, Ren C, Han W, Uyama H, Li Q. Improved Antithrombogenicity of a Poly(lactic acid) Surface Grafted with Chondroitin Sulfate. ACS APPLIED BIO MATERIALS 2021; 4:2696-2703. [DOI: 10.1021/acsabm.0c01629] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Bo Zhang
- School of Mechanics Science and Safety Engineering, Zhengzhou University, Zhengzhou 450002, China
- National Center for International Research of Micro-Nano Molding Technology, Key Laboratory of Henan Province for Micro Molding Technology, Zhengzhou 450002, China
| | - Xiaofeng Wang
- School of Mechanics Science and Safety Engineering, Zhengzhou University, Zhengzhou 450002, China
- National Center for International Research of Micro-Nano Molding Technology, Key Laboratory of Henan Province for Micro Molding Technology, Zhengzhou 450002, China
| | - Dongfang Wang
- School of Mechanics Science and Safety Engineering, Zhengzhou University, Zhengzhou 450002, China
- National Center for International Research of Micro-Nano Molding Technology, Key Laboratory of Henan Province for Micro Molding Technology, Zhengzhou 450002, China
| | - Meng Guo
- School of Mechanics Science and Safety Engineering, Zhengzhou University, Zhengzhou 450002, China
- National Center for International Research of Micro-Nano Molding Technology, Key Laboratory of Henan Province for Micro Molding Technology, Zhengzhou 450002, China
| | - Cuihong Ren
- School of Mechanics Science and Safety Engineering, Zhengzhou University, Zhengzhou 450002, China
- National Center for International Research of Micro-Nano Molding Technology, Key Laboratory of Henan Province for Micro Molding Technology, Zhengzhou 450002, China
| | - Wenjuan Han
- School of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450002, China
| | - Hiroshi Uyama
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Suita, Japan
| | - Qian Li
- School of Mechanics Science and Safety Engineering, Zhengzhou University, Zhengzhou 450002, China
- National Center for International Research of Micro-Nano Molding Technology, Key Laboratory of Henan Province for Micro Molding Technology, Zhengzhou 450002, China
- School of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450002, China
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