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Chen H, Xiang Z, Zhang T, Wang H, Li X, Chen H, Shi Q. Heparinized self-healing polymer coating with inflammation modulation for blood-contacting biomedical devices. Acta Biomater 2024; 186:201-214. [PMID: 39089350 DOI: 10.1016/j.actbio.2024.07.010] [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: 03/01/2024] [Revised: 07/09/2024] [Accepted: 07/09/2024] [Indexed: 08/03/2024]
Abstract
The current techniques for antithrombotic coating on blood-contacting biomedical materials and devices are usually complex and lack practical feasibility with weak coating stability and low heparin immobilization. Here, a heparinized self-healing polymer coating with inflammation modulation is introduced through thermal-initiated radical copolymerization of methacrylate esterified heparin (MA-heparin) with methyl methacrylate (MMA) and n-butyl acrylate (nBA), followed by the anchoring of reactive oxygen species (ROS)-responsive polyoxalate containing vanillyl alcohol (PVAX) onto the coating through esterification. The aspirin, which is readily dissolved in the solution of MMA and nBA, is encapsulated within the coating after copolymerization. The copolymerization of MA-heparin with MMA and nBA significantly increases the heparin content of the coating, effectively inhibiting thrombosis and rendering the coating self-healing to help maintain long-term stability. ROS-responsive PVAX and aspirin released in a temperature-dependent manner resist acute and chronic inflammation, respectively. The heparinized self-healing and inflammation-modulated polymer coating exhibits the ability to confer long-term stability and hemocompatibility to blood-contacting biomedical materials and devices. STATEMENT OF SIGNIFICANCE: Surface engineering for blood-contacting biomedical devices paves a successful way to reduce thrombotic and inflammatory complications. However, lack of effectiveness, long-term stability and practical feasibility hinders the development and clinical application of existing strategies. Here we design a heparinized self-healing and inflammation-modulated polymer coating, which possesses high heparin level and self-healing capability to maintain long-term stability. The polymer coating is practically feasible to varied substrates and demonstrated to manipulate inflammation and prevent thrombosis both in vitro and in vivo. Our work provides a new method to develop coatings for blood-contacting biomedical materials and devices with long-term stability and hemocompatibility.
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Affiliation(s)
- Honghong Chen
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022, China; School of Applied Chemistry and Engineering, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Zehong Xiang
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022, China; School of Applied Chemistry and Engineering, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Tianci Zhang
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022, China; School of Applied Chemistry and Engineering, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Haozheng Wang
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022, China; School of Applied Chemistry and Engineering, University of Science and Technology of China, Hefei, Anhui 230026, China.
| | - Xian Li
- Department of Gastric and Colorectal Surgery, General Surgery Center, First Hospital of Jilin University, Changchun, Jilin 130021, China
| | - Hao Chen
- Department of Neurovascular Surgery, First Hospital of Jilin University, Changchun, Jilin 130021, China
| | - Qiang Shi
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022, China; School of Applied Chemistry and Engineering, University of Science and Technology of China, Hefei, Anhui 230026, China.
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Witzdam L, White T, Rodriguez-Emmenegger C. Steps Toward Recapitulating Endothelium: A Perspective on the Next Generation of Hemocompatible Coatings. Macromol Biosci 2024:e2400152. [PMID: 39072925 DOI: 10.1002/mabi.202400152] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2024] [Revised: 06/26/2024] [Indexed: 07/30/2024]
Abstract
Endothelium, the lining in this blood vessel, orchestrates three main critical functions such as protecting blood components, modulating of hemostasis by secreting various inhibitors, and directing clot digestion (fibrinolysis) by activating tissue plasminogen activator. No other surface can perform these tasks; thus, the contact of blood and blood-contacting medical devices inevitably leads to the activation of coagulation, often causing device failure, and thromboembolic complications. This perspective, first, discusses the biological mechanisms of activation of coagulation and highlights the efforts of advanced coatings to recapitulate one characteristic of endothelium, hereafter single functions of endothelium and noting necessity of the synergistic integration of its three main functions. Subsequently, it is emphasized that to overcome the challenges of blood compatibility an endothelium-mimicking system is needed, proposing a synergy of bottom-up synthetic biology, particularly synthetic cells, with passive- and bioactive surface coatings. Such integration holds promise for developing advanced biomaterials capable of recapitulating endothelial functions, thereby enhancing the hemocompatibility and performance of blood-contacting medical devices.
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Affiliation(s)
- Lena Witzdam
- Institute for Bioengineering of Catalonia (IBEC), The Barcelona Institute of Science and Technology (BIST), Carrer de Baldiri Reixac, 10, 12, Barcelona, 08028, Spain
- DWI - Leibniz Institute for Interactive Materials, Forckenbeckstraße 50, 52074, Aachen, Germany
- Institute of Technical and Macromolecular Chemistry, RWTH Aachen University, Worringerweg 2, 52074, Aachen, Germany
| | - Tom White
- Institute for Bioengineering of Catalonia (IBEC), The Barcelona Institute of Science and Technology (BIST), Carrer de Baldiri Reixac, 10, 12, Barcelona, 08028, Spain
| | - Cesar Rodriguez-Emmenegger
- Institute for Bioengineering of Catalonia (IBEC), The Barcelona Institute of Science and Technology (BIST), Carrer de Baldiri Reixac, 10, 12, Barcelona, 08028, Spain
- DWI - Leibniz Institute for Interactive Materials, Forckenbeckstraße 50, 52074, Aachen, Germany
- Catalan Institution for Research and Advanced Studies (ICREA), Passeig Lluís Companys 23, Barcelona, 08010, Spain
- Biomedical Research Networking, Center in Bioengineering, Biomaterials and Nanomedicine, The Institute of Health Carlos III, Madrid, 28029, Spain
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Duan X, Xu Y, Zhang Z, Ma X, Wang C, Ma W, Jia F, Pan X, Liu Y, Zhao Y, Li Q, Liu Z, Yang Y. Piezoelectrically-activated antibacterial catheter for prevention of urinary tract infections in an on-demand manner. Mater Today Bio 2024; 26:101089. [PMID: 38779557 PMCID: PMC11109010 DOI: 10.1016/j.mtbio.2024.101089] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2024] [Revised: 04/13/2024] [Accepted: 05/10/2024] [Indexed: 05/25/2024] Open
Abstract
Catheter-associated urinary tract infection (CAUTI) is a common clinical problem, especially during long-term catheterization, causing additional pain to patients. The development of novel antimicrobial coatings is needed to prolong the service life of catheters and reduce the incidence of CAUTIs. Herein, we designed an antimicrobial catheter coated with a piezoelectric zinc oxide nanoparticles (ZnO NPs)-incorporated polyvinylidene difluoride-hexafluoropropylene (ZnO-PVDF-HFP) membrane. ZnO-PVDF-HFP could be stably coated onto silicone catheters simply by a one-step solution film-forming method, very convenient for industrial production. In vitro, it was demonstrated that ZnO-PVDF-HFP coating could significantly inhibit bacterial growth and the formation of bacterial biofilm under ultrasound-mediated mechanical stimulation even after 4 weeks. Importantly, the on and off of antimicrobial activity as well as the strenth of antibacterial property could be controlled in an adaptive manner via ultrasound. In a rabbit model, the ZnO-PVDF-HFP-coated catheter significantly reduced the incidence CAUTIs compared with clinically-commonly used catheters under assistance of ultrasonication, and no side effect was detected. Collectively, the study provided a novel antibacterial catheter to prevent the occurrence of CAUTIs, whose antibacterial activity could be controlled in on-demand manner, adaptive to infection situation and promising in clinical application.
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Affiliation(s)
- Xiaofeng Duan
- Department of Urology, The Third Affiliated Hospital of Jinzhou Medical University, Jinzhou, Liaoning, 121000, China
| | - Yongde Xu
- Department of Urology, Beijing Friendship Hospital, Capital Medical University, Beijing, 100050, China
| | - Zhifa Zhang
- Department of Neurosurgery, The First Medical Center of Chinese PLA General Hospital, Beijing, 100853, China
| | - Xinbo Ma
- Senior Department of Orthopedics, The Fourth Medical Center of PLA General Hospital, No. 51, Fucheng Road, Haidian District, Beijing, 100048, China
| | - Cui Wang
- Beijing Institute of Basic Medical Sciences, No. 27 Taiping Road, Haidian District, Beijing, 100850, China
| | - Wenjing Ma
- Beijing Institute of Basic Medical Sciences, No. 27 Taiping Road, Haidian District, Beijing, 100850, China
| | - Fan Jia
- Department of Urology, The Third Affiliated Hospital of Jinzhou Medical University, Jinzhou, Liaoning, 121000, China
| | - Xiaoying Pan
- Department of Urology, The Affiliated Hospital of Changchun University of Chinese Medicine, Changchun, Jilin, 130021, China
| | - Yang Liu
- Department of Urology, The Affiliated Hospital of Changchun University of Chinese Medicine, Changchun, Jilin, 130021, China
| | - Yantao Zhao
- Senior Department of Orthopedics, The Fourth Medical Center of PLA General Hospital, No. 51, Fucheng Road, Haidian District, Beijing, 100048, China
| | - Qihong Li
- Department of Stomatology, The Fifth Medical Center, Chinese PLA General Hospital, Beijing, 100071, China
| | - Zhiqiang Liu
- Beijing Institute of Basic Medical Sciences, No. 27 Taiping Road, Haidian District, Beijing, 100850, China
| | - Yong Yang
- Department of Urology, The Affiliated Hospital of Changchun University of Chinese Medicine, Changchun, Jilin, 130021, China
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Du J, Zhang X, Li W, Wang M, Zhou X, Ren L. Generalized Multifunctional Coating Strategies Based on Polyphenol-Amine-Inspired Chemistry and Layer-by-Layer Deposition for Blood Contact Catheters. ACS Biomater Sci Eng 2024; 10:3057-3068. [PMID: 38641433 DOI: 10.1021/acsbiomaterials.4c00578] [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] [Indexed: 04/21/2024]
Abstract
Blood-contacting catheters play a pivotal role in contemporary medical treatments, particularly in the management of cardiovascular diseases. However, these catheters exhibit inappropriate wettability and lack antimicrobial characteristics, which often lead to catheter-related infections and thrombosis. Therefore, there is an urgent need for blood contact catheters with antimicrobial and anticoagulant properties. In this study, we employed tannic acid (TA) and 3-aminopropyltriethoxysilane (APTES) to create a stable hydrophilic coating under mild conditions. Heparin (Hep) and poly(lysine) (PL) were then modified on the TA-APTES coating surface using the layer-by-layer (LBL) technique to create a superhydrophilic TA/APTES/(LBL)4 coating on silicone rubber (SR) catheters. Leveraging the superhydrophilic nature of this coating, it can be effectively applied to blood-contacting catheters to impart antibacterial, antiprotein adsorption, and anticoagulant properties. Due to Hep's anticoagulant attributes, the activated partial thromboplastin time and thrombin time tests conducted on SR/TA-APTES/(LBL)4 catheters revealed remarkable extensions of 276 and 103%, respectively, when compared to uncoated commercial SR catheters. Furthermore, the synergistic interaction between PL and TA serves to enhance the resistance of SR/TA-APTES/(LBL)4 catheters against bacterial adherence, reducing it by up to 99.9% compared to uncoated commercial SR catheters. Remarkably, the SR/TA-APTES/(LBL)4 catheter exhibits good biocompatibility with human umbilical vein endothelial cells in culture, positioning it as a promising solution to address the current challenges associated with blood-contact catheters.
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Affiliation(s)
- Jiahao Du
- Department of Biomaterials, College of Materials, Xiamen University, 422 Siming Nan Road, Xiamen 361005, China
| | - Xiaoting Zhang
- Department of Biomaterials, College of Materials, Xiamen University, 422 Siming Nan Road, Xiamen 361005, China
| | - Wenlong Li
- Department of Biomaterials, College of Materials, Xiamen University, 422 Siming Nan Road, Xiamen 361005, China
| | - Miao Wang
- Department of Biomaterials, College of Materials, Xiamen University, 422 Siming Nan Road, Xiamen 361005, China
| | - Xi Zhou
- Department of Biomaterials, College of Materials, Xiamen University, 422 Siming Nan Road, Xiamen 361005, China
| | - Lei Ren
- Department of Biomaterials, College of Materials, Xiamen University, 422 Siming Nan Road, Xiamen 361005, China
- State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
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Hu Q, Du Y, Bai Y, Xing D, Lang S, Li K, Li X, Nie Y, Liu G. Sprayable Zwitterionic Antibacterial Hydrogel With High Mechanical Resilience and Robust Adhesion for Joint Wound Treatment. Macromol Rapid Commun 2024; 45:e2300683. [PMID: 38237945 DOI: 10.1002/marc.202300683] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2023] [Revised: 01/14/2024] [Indexed: 01/24/2024]
Abstract
Wound healing in movable parts, including the joints and neck, remains a critical challenge due to frequent motions and poor flexibility of dressings, which may lead to mismatching of mechanical properties and poor fitting between dressings and wounds; thus, increasing the risk of bacterial infection. This study proposes a sprayable zwitterionic antibacterial hydrogel with outstanding flexibility and desirable adhesion. This hydrogel precursor is fabricated by combining zwitterionic sulfobetaine methacrylate (SBMA) with poly(sulfobetaine methacrylate-co-dopamine methacrylamide)-modified silver nanoparticles (PSBDA@AgNPs) through robust electrostatic interactions. About 150 s of exposure to UV light, the SBMA monomer polymerizes to form PSB chains entangled with PSBDA@AgNPs, transformed into a stable and adhesion PSB-PSB@Ag hydrogel at the wound site. The resulting hydrogel has adhesive strength (15-38 kPa), large tensile strain (>400%), suitable shape adaptation, and excellent mechanical resilience. Moreover, the hydrogel displays pH-responsive behavior; the acidic microenvironment at the infected wound sites prompts the hydrogel to rapidly release AgNPs and kill bacteria. Further, the healing effect of the hydrogel is demonstrated on the rat neck skin wound, showing improved wound closing rate due to reduced inflammation and enhanced angiogenesis. Overall, the sprayable zwitterionic antibacterial hydrogel has significant potential to promote joint skin wound healing.
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Affiliation(s)
- Qinsheng Hu
- Department of Orthopedic Surgery and Orthopedic Research Institute, West China Hospital, Sichuan University, Chengdu, 610041, China
- Department of Orthopedic Surgery, Yaan People's Hospital, Yaan, 625000, China
| | - Yangrui Du
- College of Biomass Science and Engineering, Sichuan University, Chengdu, 610065, China
| | - Yangjing Bai
- West China School of Nursing, Sichuan University/Department of Cardiovascular Surgery, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Dandan Xing
- College of Biomass Science and Engineering, Sichuan University, Chengdu, 610065, China
| | - Shiying Lang
- College of Biomass Science and Engineering, Sichuan University, Chengdu, 610065, China
| | - Kaijun Li
- College of Biomass Science and Engineering, Sichuan University, Chengdu, 610065, China
| | - Xinyun Li
- Dazhou Hospital of Integrated Traditional Chinese and Western Medicine, Dazhou, Sichuan, 635000, China
| | - Yong Nie
- Department of Orthopedic Surgery and Orthopedic Research Institute, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Gongyan Liu
- College of Biomass Science and Engineering, Sichuan University, Chengdu, 610065, China
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6
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Lyu N, Deng D, Xiang Y, Du Z, Mou X, Ma Q, Huang N, Lu J, Li X, Yang Z, Zhang W. An insect sclerotization-inspired antifouling armor on biomedical devices combats thrombosis and embedding. Bioact Mater 2024; 33:562-571. [PMID: 38162514 PMCID: PMC10755681 DOI: 10.1016/j.bioactmat.2023.12.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2023] [Revised: 12/04/2023] [Accepted: 12/04/2023] [Indexed: 01/03/2024] Open
Abstract
Thrombus formation and tissue embedding significantly impair the clinical efficacy and retrievability of temporary interventional medical devices. Herein, we report an insect sclerotization-inspired antifouling armor for tailoring temporary interventional devices with durable resistance to protein adsorption and the following protein-mediated complications. By mimicking the phenol-polyamine chemistry assisted by phenol oxidases during sclerotization, we develop a facile one-step method to crosslink bovine serum albumin (BSA) with oxidized hydrocaffeic acid (HCA), resulting in a stable and universal BSA@HCA armor. Furthermore, the surface of the BSA@HCA armor, enriched with carboxyl groups, supports the secondary grafting of polyethylene glycol (PEG), further enhancing both its antifouling performance and durability. The synergy of robustly immobilized BSA and covalently grafted PEG provide potent resistance to the adhesion of proteins, platelets, and vascular cells in vitro. In ex vivo blood circulation experiment, the armored surface reduces thrombus formation by 95 %. Moreover, the antifouling armor retained over 60 % of its fouling resistance after 28 days of immersion in PBS. Overall, our armor engineering strategy presents a promising solution for enhancing the antifouling properties and clinical performance of temporary interventional medical devices.
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Affiliation(s)
- Nan Lyu
- Dongguan Key Laboratory of Smart Biomaterials and Regenerative Medicine, Department of Cardiology, The Tenth Affiliated Hospital, Southern Medical University, Dongguan, Guangdong, 523059, China
| | - Daihua Deng
- Dongguan Key Laboratory of Smart Biomaterials and Regenerative Medicine, Department of Cardiology, The Tenth Affiliated Hospital, Southern Medical University, Dongguan, Guangdong, 523059, China
| | - Yuting Xiang
- Dongguan Key Laboratory of Smart Biomaterials and Regenerative Medicine, Department of Cardiology, The Tenth Affiliated Hospital, Southern Medical University, Dongguan, Guangdong, 523059, China
| | - Zeyu Du
- Dongguan Key Laboratory of Smart Biomaterials and Regenerative Medicine, Department of Cardiology, The Tenth Affiliated Hospital, Southern Medical University, Dongguan, Guangdong, 523059, China
| | - Xiaohui Mou
- Dongguan Key Laboratory of Smart Biomaterials and Regenerative Medicine, Department of Cardiology, The Tenth Affiliated Hospital, Southern Medical University, Dongguan, Guangdong, 523059, China
| | - Qing Ma
- Dongguan Key Laboratory of Smart Biomaterials and Regenerative Medicine, Department of Cardiology, The Tenth Affiliated Hospital, Southern Medical University, Dongguan, Guangdong, 523059, China
| | - Nan Huang
- Dongguan Key Laboratory of Smart Biomaterials and Regenerative Medicine, Department of Cardiology, The Tenth Affiliated Hospital, Southern Medical University, Dongguan, Guangdong, 523059, China
- GuangZhou Nanchuang Mount Everest Company for Medical Science and Technology, Guangzhou, Guangdong, 510670, China
| | - Jing Lu
- Department of Anesthesiology, Sichuan Academy of Medical Sciences & Sichuan Provincial People's Hospital, School of Medicine, University of Electronic Science and Technology of China, Chengdu, Sichuan, 610072, China
| | - Xin Li
- Department of Cardiology, Third People's Hospital of Chengdu Affiliated to Southwest Jiaotong University, Chengdu, Sichuan, 610072, China
| | - Zhilu Yang
- Dongguan Key Laboratory of Smart Biomaterials and Regenerative Medicine, Department of Cardiology, The Tenth Affiliated Hospital, Southern Medical University, Dongguan, Guangdong, 523059, China
- Department of Cardiology, Third People's Hospital of Chengdu Affiliated to Southwest Jiaotong University, Chengdu, Sichuan, 610072, China
- Guangdong Provincial Key Laboratory of Cardiac Function and Microcirculation, Southern Medical University, Guangzhou, Guangdong, 510080, China
| | - Wentai Zhang
- Dongguan Key Laboratory of Smart Biomaterials and Regenerative Medicine, Department of Cardiology, The Tenth Affiliated Hospital, Southern Medical University, Dongguan, Guangdong, 523059, China
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Bai Y, Lang S, Du Y, Hu Q, Li X, Liu G. Metallic-Polyphenolic Nanoparticles Reinforced Cationic Guar Gum Hydrogel for Effectively Treating Burn Wound. Macromol Biosci 2024; 24:e2300396. [PMID: 37831011 DOI: 10.1002/mabi.202300396] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2023] [Revised: 10/08/2023] [Indexed: 10/14/2023]
Abstract
The development of injectable hydrogel dressings which are long-term moisturizing, easy-to-apply, and effectively inhibiting infection and inflammatory is essential to promote burn wound repairing. Herein, an injectable hydrogel with moisturizing, antibacterial, and anti-inflammation abilities via multiple reversible interactions between cation guar gum (CG) and metallic-polyphenolic nanoparticles (PA-ZnII NPs) is developed. Specifically, PA-ZnII NPs is formed by synergistic complexation of protocatechualdehyde (PA) and zinc ion (Zn2+ ), provides CGPZ hydrogel with plentiful reversible interactions to inhibit the loss of moist. By interacting with PA-ZnII NPs, the CGPZ hydrogel can provide enhanced moisturization for more than 3 days. Moreover, the CGPZ hydrogel can maintain good adhesion for a period of time with injection and self-healing capabilities due to reversible interactions between CG and PA-ZnII NPs. In addition, CGPZ hydrogel exhibits outstanding broad spectrum antibacterial performance, as its killing efficiency against Escherichia coli and Staphylococcus aureus is all greater than 99.99%. Importantly, compared with commercial dressing, the CGPZ hydrogel can promote wound healing faster by inhibiting tissue damage from dysregulated inflammation and accelerating neovascularization. It is believed that the moisturizing CGPZ hydrogel with antibacterial and anti-inflammation performance can serve as a promising dressing for the effective treatment of burn wound.
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Affiliation(s)
- Yangjing Bai
- West China School of Nursing, Sichuan University/Department of Cardiovascular Surgery, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Shiying Lang
- College of Biomass Science and Engineering, Sichuan University, Chengdu, 610065, China
| | - Yangrui Du
- College of Biomass Science and Engineering, Sichuan University, Chengdu, 610065, China
| | - Qinsheng Hu
- Department of Orthopedic Surgery and Orthopedic Research Institute, West China Hospital, Sichuan University, Chengdu, 610041, China
- Department of Orthopedic Surgery, Yaan People's Hospital, Yaan, 625000, China
| | - Xinyun Li
- Dazhou Hospital of Integrated Traditional Chinese and Western medicine, Dazhou, Sichuan, 635000, China
| | - Gongyan Liu
- College of Biomass Science and Engineering, Sichuan University, Chengdu, 610065, China
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Peng J, Li K, Du Y, Yi F, Wu L, Liu G. A robust mixed-charge zwitterionic polyurethane coating integrated with antibacterial and anticoagulant functions for interventional blood-contacting devices. J Mater Chem B 2023; 11:8020-8032. [PMID: 37530181 DOI: 10.1039/d3tb01443f] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/03/2023]
Abstract
Antifouling coatings based on zwitterionic polymers have been widely applied for surface modification of interventional blood-contacting devices to combat thrombosis and infection. However, the weak adhesion stability of the zwitterionic coating to the device surface is still the key challenge. In this work, biocompatible mixed-charge zwitterionic polyurethane (MPU) polymers, that bear equal amounts of cationic quaternary amine groups and anionic carboxyl groups, were developed and further uniformly dip-coated onto a thermoplastic polyurethane (TPU) substrate with a commercial aliphatic isocyanate cross-linker (AIC). During the curing process, AIC not only crosslinks MPU chains into a polymer network but also reacts with hydroxyl groups of TPU to interlink the polymer network to the substrate, resulting in a cross-linking reinforced MPU coating (CMPU) with excellent mechanical robustness and adhesion strength. Taking advantage of the mixed-charge feature, the final zwitterionic CMPU coating exhibits both excellent antifouling and antibacterial activities against protein adsorption and bacterial growth, respectively, which is beneficial for effectively inhibiting the occurrence of in vivo infection. Moreover, anticoagulation studies show that CMPU-coated TPU catheters can also prevent the formation of blood clots in ex vivo rabbit blood circuits without anticoagulants. Hence, the designed CMPU coating has immense potential to address thrombosis and infection for interventional blood-contacting devices.
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Affiliation(s)
- Jinyu Peng
- College of Biomass Science and Engineering, Sichuan University, Chengdu 610065, China.
| | - Kaijun Li
- College of Biomass Science and Engineering, Sichuan University, Chengdu 610065, China.
| | - Yangrui Du
- College of Biomass Science and Engineering, Sichuan University, Chengdu 610065, China.
| | - Feng Yi
- Department of Emergency, Yueyang Central Hospital, Yueyang 414100, China.
| | - Lei Wu
- Department of Emergency, Yueyang Central Hospital, Yueyang 414100, China.
| | - Gongyan Liu
- College of Biomass Science and Engineering, Sichuan University, Chengdu 610065, China.
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