1
|
Zan R, Wang H, Shen S, Yang S, Yu H, Zhang X, Zhang X, Chen X, Shu M, Lu X, Xia J, Gu Y, Liu H, Zhou Y, Zhang X, Suo T. Biomimicking covalent organic frameworks nanocomposite coating for integrated enhanced anticorrosion and antifouling properties of a biodegradable magnesium stent. Acta Biomater 2024; 180:183-196. [PMID: 38604465 DOI: 10.1016/j.actbio.2024.04.012] [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: 01/08/2024] [Revised: 03/25/2024] [Accepted: 04/07/2024] [Indexed: 04/13/2024]
Abstract
The utilization of biodegradable magnesium (Mg) alloys in the fabrication of temporary non-vascular stents is an innovative trend in biomedical engineering. However, the heterogeneous degradation profiles of these biomaterials, together with potential bacterial colonization that could precipitate infectious or stenotic complications, are critical obstacles precluding their widespread clinical application. In pursuit of overcoming these limitations, this study applies the principles of biomimicry, particularly the hydrophobic and anti-fouling characteristics of lotus leaves, to pioneer the creation of nanocomposite coatings. These coatings integrate poly-trimethylene carbonate (PTMC) with covalent organic frameworks (COFs), to modify the stent's surface property. The strategic design of the coating's topography, porosity, and self-polishing capabilities collectively aims to decelerate degradation processes and minimize biological adhesion. The protective qualities of the coatings were substantiated through rigorous testing in both in vitro dynamic bile tests and in vivo New Zealand rabbit choledochal models. Empirical findings from these trials confirmed that the implementation of COF-based nanocomposite coatings robustly fortifies Mg implantations, conferring heightened resistance to both biocorrosion and biofouling as well as improved biocompatibility within bodily environments. The outcomes of this research elucidate a comprehensive framework for the multifaceted strategies against stent corrosion and fouling, thereby charting a visionary pathway toward the systematic conception of a new class of reliable COF-derived surface modifications poised to amplify the efficacy of Mg-based stents. STATEMENT OF SIGNIFICANCE: Biodegradable magnesium (Mg) alloys are widely utilized in temporary stents, though their rapid degradation and susceptibility to bacterial infection pose significant challenges. Our research has developed a nanocomposite coating inspired by the lotus, integrating poly-trimethylene carbonate with covalent organic frameworks (COF). The coating achieved self-polishing property and optimal surface energy on the Mg substrate, which decelerates stent degradation and reduces biofilm formation. Comprehensive evaluations utilizing dynamic bile simulations and implantation in New Zealand rabbit choledochal models reveal that the coating improves the durability and longevity of the stent. The implications of these findings suggest the potential COF-based Mg alloy stent surface treatments and a leap forward in advancing stent performance and endurance in clinical applications.
Collapse
Affiliation(s)
- Rui Zan
- Department of Biliary Surgery, Zhongshan Hospital, Fudan University, Shanghai, 200032, China; Yiwu Research Institute of Fudan University, Yiwu, 322000, China
| | - Hao Wang
- Department of Hepatobiliary and Pancreatic Surgery Affiliated Wuxi No.2 People's Hospital of Nanjing Medical University, Wuxi, 214002, China; Department of General Surgery, Jiangnan University Medical Center, Wuxi, 214000, China
| | - Sheng Shen
- Department of Biliary Surgery, Zhongshan Hospital, Fudan University, Shanghai, 200032, China; Shanghai Engineering Research Center of Biliary Tract Minimal Invasive Surgery and Materials, Shanghai, 200032, China
| | - Shi Yang
- State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Han Yu
- State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Xiyue Zhang
- State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Xian Zhang
- Department of Biliary Surgery, Zhongshan Hospital, Fudan University, Shanghai, 200032, China
| | - Xiang Chen
- Department of Hepatopancreatobiliary Surgery, Huainan Xinhua Hospital affiliated to Anhui University of Science and Technology, Huainan, 232000, China
| | - Mengxuan Shu
- Department of Biliary Surgery, Zhongshan Hospital, Fudan University, Shanghai, 200032, China
| | - Xiao Lu
- Department of Biliary Surgery, Zhongshan Hospital, Fudan University, Shanghai, 200032, China
| | - Jiazeng Xia
- Department of General Surgery, Jiangnan University Medical Center, Wuxi, 214000, China
| | - Yaqi Gu
- Department of Hepatopancreatobiliary Surgery, Huainan Xinhua Hospital affiliated to Anhui University of Science and Technology, Huainan, 232000, China
| | - Houbao Liu
- Department of Biliary Surgery, Zhongshan Hospital, Fudan University, Shanghai, 200032, China; Shanghai Engineering Research Center of Biliary Tract Minimal Invasive Surgery and Materials, Shanghai, 200032, China.
| | - Yongping Zhou
- Department of Hepatobiliary and Pancreatic Surgery Affiliated Wuxi No.2 People's Hospital of Nanjing Medical University, Wuxi, 214002, China; Department of General Surgery, Jiangnan University Medical Center, Wuxi, 214000, China.
| | - Xiaonong Zhang
- State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China.
| | - Tao Suo
- Department of Biliary Surgery, Zhongshan Hospital, Fudan University, Shanghai, 200032, China; Shanghai Engineering Research Center of Biliary Tract Minimal Invasive Surgery and Materials, Shanghai, 200032, China.
| |
Collapse
|
2
|
Babichuk IS, Lin C, Qiu Y, Zhu H, Ye TT, Gao Z, Yang J. Raman mapping of piezoelectric poly( l-lactic acid) films for force sensors. RSC Adv 2022; 12:27687-27697. [PMID: 36320245 PMCID: PMC9516697 DOI: 10.1039/d2ra04241j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2022] [Accepted: 09/14/2022] [Indexed: 12/03/2022] Open
Abstract
Poly-l-lactic acid (PLLA) is a synthetic, biocompatible, biodegradable polymer with good piezoelectric properties. The prepared PLLA films were annealed in the oven at 140 °C for 0 h, 3 h, 12 h, and 24 h, respectively. The influences of temperature treatment time on the optoelectronic properties of the PLLA films and piezoelectric sensors based on them were investigated. The morphology and crystal structure of the PLLA films obtained under various post-processing conditions were examined by scanning electron microscopy, X-ray diffraction, Raman spectroscopy, and ATR-FTIR spectroscopy. The micromechanical equipment for tension–compression measurements was built in the laboratory for the tested piezoelectric sensors. The analysis of the structure shows that the increase in the crystallite size of the PLLA film influences the growth of the piezoelectric signal of the sensors based on them. The vibrational analysis of the PLLA films confirmed their crystal structure. The improvement in the structure and the stretching of the dipole C
Created by potrace 1.16, written by Peter Selinger 2001-2019
]]>
O for the film obtained after 3 h treatment increased the piezoelectric properties of the PLLA films. The analysis of Raman mapping added information that the area of the ordered phase of the PLLA films depends on the time of temperature treatment. The maximum value of the piezoelectric signal was 0.98 mV for sensors prepared on films annealed for 3 h at a load of 20 N. For films without temperature annealing at the same load, the maximum value was 0.45 mV. Thus, efficient converters of mechanical energy into electrical energy were obtained, which opens new innovative perspectives for the creation of flexible pressure sensors based on PLLA. Poly-l-lactic acid (PLLA) is a synthetic, biocompatible, biodegradable polymer with good piezoelectric properties.![]()
Collapse
Affiliation(s)
- Ivan S. Babichuk
- Faculty of Intelligent Manufacturing, Wuyi University, 529020 Jiangmen, P.R. China
- V. Lashkaryov Institute of Semiconductor Physics, NAS of Ukraine, 03680 Kyiv, Ukraine
| | - Chubin Lin
- Faculty of Intelligent Manufacturing, Wuyi University, 529020 Jiangmen, P.R. China
| | - Yuhui Qiu
- Faculty of Intelligent Manufacturing, Wuyi University, 529020 Jiangmen, P.R. China
| | - Huiyu Zhu
- Faculty of Intelligent Manufacturing, Wuyi University, 529020 Jiangmen, P.R. China
| | - Terry Tao Ye
- Department of Electrical and Electronic Engineering and University Key Laboratory of Advanced Wireless Communications of Guangdong Province, Southern University of Science and Technology, 518055, Shenzhen, P.R. China
| | - Zhaoli Gao
- Biomedical Engineering Department, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, P.R. China
- CUHK Shenzhen Research Institute, Nanshan, 518060, Shenzhen, P.R. China
| | - Jian Yang
- Faculty of Intelligent Manufacturing, Wuyi University, 529020 Jiangmen, P.R. China
| |
Collapse
|
3
|
Braghirolli DI, Caberlon B, Gamba D, Petry J, Dias ML, Pranke P. Poly(trimethylene carbonate-co-L-lactide) electrospun scaffolds for use as vascular grafts. ACTA ACUST UNITED AC 2019; 52:e8318. [PMID: 31411247 PMCID: PMC6694404 DOI: 10.1590/1414-431x20198318] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2019] [Accepted: 05/31/2019] [Indexed: 11/22/2022]
Abstract
Currently, there is great clinical need for suitable synthetic grafts that can be used in vascular diseases. Synthetic grafts have been successfully used in medium and large arteries, however, their use in small diameter vessels is limited and presents a high failure rate. In this context, the aim of this study was to develop tissue engineering scaffolds, using poly(trimethylene carbonate-co-L-lactide) (PTMCLLA), for application as small diameter vascular grafts. For this, copolymers with varying trimethylene carbonate/lactide ratios - 20/80, 30/70, and 40/60 - were submitted to electrospinning and the resulting scaffolds were evaluated in terms of their physicochemical and biological properties. The scaffolds produced with PTMCLLA 20/80, 30/70, and 40/60 showed smooth fibers with an average diameter of 771±273, 606±242, and 697±232 nm, respectively. When the degradation ratio was evaluated, the three scaffold groups had a similar molecular weight (Mw) on the final day of analysis. PTMCLLA 30/70 and 40/60 scaffolds exhibited greater flexibility than the PTMCLLA 20/80. However, the PTMCLLA 40/60 scaffolds showed a large wrinkling and their biological properties were not evaluated. The PTMCLLA 30/70 scaffolds supported the adhesion and growth of mesenchymal stem cells (MSCs), endothelial progenitor cells, and smooth muscle cells (SMCs). In addition, they provided a spreading of MSCs and SMCs. Given the results, the electrospun scaffolds produced with PTMCLLA 30/70 copolymer can be considered promising candidates for future applications in vascular tissue engineering.
Collapse
Affiliation(s)
- D I Braghirolli
- Laboratório de Hematologia e Células-tronco, Faculdade de Farmácia, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brasil.,Programa de Pós-Graduação em Fisiologia, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brasil
| | - B Caberlon
- Laboratório de Hematologia e Células-tronco, Faculdade de Farmácia, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brasil
| | - D Gamba
- Instituto de Química, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brasil
| | - Jftc Petry
- Instituto de Química, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brasil
| | - M L Dias
- Instituto de Macromoléculas Professora Eloisa Mano (IMA), Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brasil
| | - P Pranke
- Laboratório de Hematologia e Células-tronco, Faculdade de Farmácia, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brasil.,Programa de Pós-Graduação em Fisiologia, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brasil.,Instituto de Pesquisa com Células-tronco, Porto Alegre, RS, Brasil
| |
Collapse
|
4
|
Hou R, Wu L, Wang J, Yang Z, Tu Q, Zhang X, Huang N. Surface-Degradable Drug-Eluting Stent with Anticoagulation, Antiproliferation, and Endothelialization Functions. Biomolecules 2019; 9:biom9020069. [PMID: 30781704 PMCID: PMC6406385 DOI: 10.3390/biom9020069] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2018] [Revised: 01/29/2019] [Accepted: 02/06/2019] [Indexed: 12/19/2022] Open
Abstract
Drug-eluting stents (DES) have been widely applied for saving the life of patients with coronary artery diseases (CADs). However, conventional polymers such as polylactic acid (PLA) and poly (lactic-co-glycolic acid) (PLGA), which are widely applied for drug-eluting stents studies, have serious bulk erosion problems, like high local acidity and poor mechanical properties. Instead, we chose surface erosion polymer poly (1, 3-trimethylene carbonate) (PTMC) as a drug carrier in this study. Here, we fabricated and characterized a novel durable-polymer drug-eluting 316 L stainless steel (SS) stent, in which the inner surface was coated with a Ti–O film using the magnetron sputtering method to promote the growth of endothelial cells (ECs). On the outer layer of the stent, first, a Ti–O film was deposited and, then, on top of it a rapamycin-loaded PTMC coat was deposited using the ultrasonic atomization spray method. This dual coating inhibited the migration and expansion of smooth muscle cells (SMCs). The drug coating also inhibited the adhesion/activation of platelets. In tests on dogs, it was found the novel stent promoted re-endothelialization and reduced restenosis, in contrast to the plain SS stent. Thus, the novel stent may have promise for use in treating patients with CAD.
Collapse
Affiliation(s)
- Ruixia Hou
- Department of Anatomy and Histology and Embryology, Medical School of Ningbo University, Ningbo 315211, China.
- Key Laboratory of Advanced Technology of Materials of Education Ministry, School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu 610031, China.
| | - Leigang Wu
- Key Laboratory of Advanced Technology of Materials of Education Ministry, School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu 610031, China.
| | - Jin Wang
- Key Laboratory of Advanced Technology of Materials of Education Ministry, School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu 610031, China.
| | - Zhilu Yang
- Key Laboratory of Advanced Technology of Materials of Education Ministry, School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu 610031, China.
| | - Qiufen Tu
- Key Laboratory of Advanced Technology of Materials of Education Ministry, School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu 610031, China.
| | - Xingcai Zhang
- John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, MA 02138, USA.
| | - Nan Huang
- Key Laboratory of Advanced Technology of Materials of Education Ministry, School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu 610031, China.
| |
Collapse
|
5
|
On the Mechanisms of the Effects of Ionizing Radiation on Diblock and Random Copolymers of Poly(Lactic Acid) and Poly(Trimethylene Carbonate). Polymers (Basel) 2018; 10:polym10060672. [PMID: 30966706 PMCID: PMC6404164 DOI: 10.3390/polym10060672] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2018] [Revised: 06/10/2018] [Accepted: 06/11/2018] [Indexed: 11/17/2022] Open
Abstract
This article demonstrates that ionizing radiation induces simultaneous crosslinking and scission in poly(trimethylene carbonate-co-d-lactide) diblock and random copolymers. Copolymer films were electron-beam (EB) irradiated up to 300 kGy under anaerobic conditions and subsequently examined by evaluation of their structure (FT-IR, NMR), molecular weight, intrinsic viscosities, and thermal properties. Radiation chemistry of the copolymers is strongly influenced by the content of ester linkages of the lactide component. At low lactide content, crosslinking reaction is the dominant one; however, as the lactide ratio increases, the ester linkages scission becomes more competent and exceeds the crosslinking. Electron paramagnetic resonance (EPR) measurements indicate that higher content of amorphous carbonate units in copolymers leads to a reduction in free radical yield and faster radical decay as compared to lactide-rich compositions. The domination of scission of ester bonds was confirmed by identifying the radiolytically produced alkoxyl and acetyl radicals, the latter being more stable due to its conjugated structure.
Collapse
|
6
|
Ma Z, Wu Y, Wang J, Liu C. In vitro and in vivo degradation behavior of poly(trimethylene carbonate-co-d,l-lactic acid) copolymer. Regen Biomater 2017; 4:207-213. [PMID: 28798866 PMCID: PMC5544909 DOI: 10.1093/rb/rbx003] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2016] [Revised: 01/06/2017] [Accepted: 01/20/2017] [Indexed: 11/13/2022] Open
Abstract
We present P(TMC-co-DLLA) copolymer with the molar ratio of TMC: DLLA = 15: 85 was used to systematic study of in vivo and in vitro degradation behaviors. Dense homogeneous copolymer specimens were prepared by compression molding method. The in vitro and in vivo degradation were, respectively, performed at simulative body condition and implanted into rat’s subcutaneous condition. Investigations were followed via physicochemical and histological analysis such as SEM, GPC, DSC, FTIR and H&E stain. The results demonstrate that copolymeric material can degrade in phosphate buffer solution (PBS) and in rat’s body, and the in vivo degradation rate is faster. Obvious decline of molecule weight and mass loss has been observed, which led to the attenuation of mechanical strength. Furthermore, apart from the hydrolysis, macrophagocytes took part in the phagocytosis in vivo, indicating that degradation rate could be regulated by the combinational mechanism. It is concluded that P(TMC-co-DLLA) copolymer is a promising candidate for tissue repair.
Collapse
Affiliation(s)
- Zhengyu Ma
- Engineering Research Center for Biomedical Materials of Ministry of Education, School of Materials Science and Engineeering, East China University of Science and Technology, Shanghai 200237, People's Republic of China
| | - Yi Wu
- Engineering Research Center for Biomedical Materials of Ministry of Education, School of Materials Science and Engineeering, East China University of Science and Technology, Shanghai 200237, People's Republic of China
| | - Jing Wang
- Engineering Research Center for Biomedical Materials of Ministry of Education, School of Materials Science and Engineeering, East China University of Science and Technology, Shanghai 200237, People's Republic of China
| | - Changsheng Liu
- Engineering Research Center for Biomedical Materials of Ministry of Education, School of Materials Science and Engineeering, East China University of Science and Technology, Shanghai 200237, People's Republic of China.,The State Key Laboratory of Bioreactor Engineering, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, People's Republic of China.,Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, People's Republic of China
| |
Collapse
|