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Cao Z, Ma C, Xiang L, Cao L. A main chain biodegradable polyurethane with anti-protein adsorption and anti-bacterial adhesion performances. SOFT MATTER 2023; 20:192-200. [PMID: 38073481 DOI: 10.1039/d3sm01344h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/21/2023]
Abstract
Biofilms are initially formed by substances such as proteins secreted by bacteria adhering to a surface. To achieve a durable antibacterial material, biodegradable dihydroxyl-terminated poly[(ethylene oxide)-co-(ethylene carbonate)] (PEOC(OH)2) with anti-protein adsorption properties was synthesized in this study. Further polycondensation of PEOC(OH)2 and isophorone diisocyanate (IPDI) led to biodegradable polyurethane (PEOC-PU) with PEOC as the soft segment. For comparison, polyurethanes with polyethylene glycol (PEG-PU) and polypropylene glycol (PPG-PU) as soft segments were also synthesized. The chemical structures of the polyurethanes were characterized by 1H NMR and FTIR. The biodegradation behavior of PEOC-PU promoted by lipase due to the presence of ethylene carbonate units was also studied. Their resistance to proteins was studied using quartz crystal microbalance with dissipation (QCM-D) and the results revealed that PEOC-PU exhibited excellent nonspecific resistance to proteins. The colonization of microorganisms on PU in the liquid culture medium was further examined and the results showed that PEOC-PU exhibited excellent antibacterial adhesion performance due to its protein resistance and biodegradation.
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Affiliation(s)
- Zhonglin Cao
- College of Materials Science and Engineering, Guizhou Minzu University, Guiyang 550025, China.
| | - Chunfeng Ma
- Faculty of Materials Science and Engineering, South China University of Technology, Guangzhou 510640, PR China
| | - Li Xiang
- College of Materials Science and Engineering, Guizhou Minzu University, Guiyang 550025, China.
- Key Laboratory of Polymer Processing Engineering (South China University of Technology), Ministry of Education, China
| | - Linyan Cao
- College of Chemistry and Bioengineering, Hunan University of Science and Engineering, Yongzhou 425199, China.
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2
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Wu L, Wang Y, Zhao X, Mao H, Gu Z. Investigating the Biodegradation Mechanism of Poly(trimethylene carbonate): Macrophage-Mediated Erosion by Secreting Lipase. Biomacromolecules 2023; 24:921-928. [PMID: 36644840 DOI: 10.1021/acs.biomac.2c01350] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
Poly(trimethylene carbonate) (PTMC), as one of the representatives of biodegradable aliphatic polycarbonates, has been found to degrade in vivo via surface erosion. This unique degradation behavior and the resulting nonacidic products make it more competitive with aliphatic polyesters (e.g., polylactide) in clinical practice. However, this surface degradation mechanism is complicated and not fully understood to date despite the findings that several reactive oxygen species and enzymes can specifically degrade PTMC in vitro. Herein, the biodegradation mechanism of PTMC was investigated by using possible degradation factors, distinct cell lines, and the inhibitors of these factors. The results demonstrate that PTMC undergoes a specific macrophage-mediated erosion. Macrophages tend to fuse into giant cells and elicit a typical inflammatory response by releasing proinflammatory cytokines. In addition, macrophages are suggested to primarily secrete enzymes (lipase specifically) to erode the PTMC bulk extracellularly as inhibiting their activity effectively prevented this eroding process. The clarification of the biodegradation mechanism in this work suggests that the degradation of PTMC highly depends on the foreign body response. Thus, it reminds the researchers to consider the effect of the microenvironment on the degradation and drug release of PTMC-based implantation devices and localized drug delivery systems.
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Affiliation(s)
- Lihuang Wu
- Research Institute for Biomaterials, Tech Institute for Advanced Materials, College of Materials Science and Engineering, Jiangsu Collaborative Innovation Center for Advanced Inorganic Function Composites, Suqian Advanced Materials Industry Technology Innovation Center, Nanjing Tech University, Nanjing 211816, China
| | - Yuqi Wang
- Research Institute for Biomaterials, Tech Institute for Advanced Materials, College of Materials Science and Engineering, Jiangsu Collaborative Innovation Center for Advanced Inorganic Function Composites, Suqian Advanced Materials Industry Technology Innovation Center, Nanjing Tech University, Nanjing 211816, China
| | - Xinyue Zhao
- Research Institute for Biomaterials, Tech Institute for Advanced Materials, College of Materials Science and Engineering, Jiangsu Collaborative Innovation Center for Advanced Inorganic Function Composites, Suqian Advanced Materials Industry Technology Innovation Center, Nanjing Tech University, Nanjing 211816, China
| | - Hongli Mao
- Research Institute for Biomaterials, Tech Institute for Advanced Materials, College of Materials Science and Engineering, Jiangsu Collaborative Innovation Center for Advanced Inorganic Function Composites, Suqian Advanced Materials Industry Technology Innovation Center, Nanjing Tech University, Nanjing 211816, China.,NJTech-BARTY Joint Research Center for Innovative Medical Technology, Nanjing Tech University, Nanjing 210000, China
| | - Zhongwei Gu
- Research Institute for Biomaterials, Tech Institute for Advanced Materials, College of Materials Science and Engineering, Jiangsu Collaborative Innovation Center for Advanced Inorganic Function Composites, Suqian Advanced Materials Industry Technology Innovation Center, Nanjing Tech University, Nanjing 211816, China.,NJTech-BARTY Joint Research Center for Innovative Medical Technology, Nanjing Tech University, Nanjing 210000, China
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3
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New PCL/PEC Blends: In Vitro Cell Response of Preosteoblasts and Human Mesenchymal Stem Cells. BIOLOGY 2022; 11:biology11081201. [PMID: 36009827 PMCID: PMC9404747 DOI: 10.3390/biology11081201] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/28/2022] [Revised: 08/05/2022] [Accepted: 08/07/2022] [Indexed: 11/17/2022]
Abstract
In this study, new blends of PCL/PEC have been prepared in an easy manner by casting with the objective of obtaining new biomaterials to apply to tissue engineering and bone regeneration. The PCL/PEC blends obtained, together with neat polymer blends, were characterized by infrared spectroscopy (FTIR), atomic force microscopy (AFM), scanning electron microscopy (SEM), differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA). This full characterization is the key to disentangle the miscibility, which means good compatibility, of the polymer blends used in this work. The addition of increasing amounts of PEC, has shown in the new biomaterials obtained, a remarkable improvement in relation with the mechanical properties (manageable materials) and above all, in terms of an increase in their hydrophilic character with respect to the PCL neat polymer. The improvement of all these properties is reflected in their biological properties. With these thoughts in mind, the blends obtained were tested through the assessment of several biological parameters such as cell viability, proliferation, and differentiation of both the MC3T3-E1 osteoblastic cell line and hMSCs to evaluate their cell response to different polymer membranes aimed at bone tissue regeneration. “In vitro” biocompatibility methods have been chosen rather than in vivo studies due to their lower cost, faster procedure time, and minimum ethical concerns, and because it was the first time that the biological effects of these blends were studied. The results show that the PCL/PEC blends obtained, with tunable properties in terms of hydrophilic character and hydrolytic degradation, may be regarded as good candidates to perform “in vivo” tests and check their real-life applicability for bone regeneration. The polymer acronym (the weight percentage in the sub index) is PCLx/PECy as noted in table one with the summary of compositions.
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Esakkimuthu S, Wang S, Abomohra AEF. CO2-Mediated Energy Conversion and Recycling. WASTE-TO-ENERGY 2022:379-409. [DOI: 10.1007/978-3-030-91570-4_13] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/01/2023]
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5
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Monteiro RA, Camara MC, de Oliveira JL, Campos EVR, Carvalho LB, Proença PLDF, Guilger-Casagrande M, Lima R, do Nascimento J, Gonçalves KC, Polanczyk RA, Fraceto LF. Zein based-nanoparticles loaded botanical pesticides in pest control: An enzyme stimuli-responsive approach aiming sustainable agriculture. JOURNAL OF HAZARDOUS MATERIALS 2021; 417:126004. [PMID: 33992010 DOI: 10.1016/j.jhazmat.2021.126004] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/21/2020] [Revised: 03/15/2021] [Accepted: 04/30/2021] [Indexed: 06/12/2023]
Abstract
Nanoencapsulation of biopesticides is an important strategy to increase the efficiency of these compounds, reducing losses and adverse effects on non-target organisms. This study describes the preparation and characterisation of zein nanoparticles containing the botanical compounds limonene and carvacrol, responsive to proteolytic enzymes present in the insects guts. The spherical nanoparticles, prepared by the anti-solvent precipitation method, presented in the nanoparticle tracking analysis (NTA) a concentration of 4.7 × 1012 ± 1.3 × 1011 particles.mL-1 and an average size of 125 ± 2 nm. The formulations showed stability over time, in addition to not being phytotoxic to Phaseolus vulgaris plants. In vivo tests demonstrated that formulations of zein nanoparticles containing botanical compounds showed higher mortality to Spodoptera frugiperda larvae. In addition, the FTIC probe (fluorescein isothiocyanate) showed wide distribution in the larvae midgut, as well as being identified in the feces. The trypsin enzyme, as well as the enzymatic extract from insects midgut, was effective in the degradation of nanoparticles containing the mixture of botanical compounds, significantly reducing the concentration of nanoparticles and the changes in size distribution. The zein degradation was confirmed by the disappearance of the protein band in the electrophoresis gel, by the formation of the lower molecular weight fragments and also by the greater release of FTIC after enzymes incubation. In this context, the synthesis of responsive nanoparticles has great potential for application in pest management, increasing the selectivity and specificity of the system and contributing to a more sustainable agriculture.
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Affiliation(s)
- Renata Aparecida Monteiro
- Institute of Science and Technology, São Paulo State University (UNESP), Sorocaba, São Paulo 18087-180, Brazil
| | - Marcela Candido Camara
- Institute of Science and Technology, São Paulo State University (UNESP), Sorocaba, São Paulo 18087-180, Brazil
| | - Jhones Luiz de Oliveira
- Faculty of Agronomy and Veterinary Sciences, São Paulo State University (UNESP), Jaboticabal, São Paulo 14884-900, Brazil
| | | | - Lucas Bragança Carvalho
- Institute of Science and Technology, São Paulo State University (UNESP), Sorocaba, São Paulo 18087-180, Brazil
| | | | - Mariana Guilger-Casagrande
- Laboratory of Bioactivity Assessment and Toxicology of Nanomaterials (LABiToN), University of Sorocaba (UNISO), Sorocaba, São Paulo 18023-000, Brazil
| | - Renata Lima
- Laboratory of Bioactivity Assessment and Toxicology of Nanomaterials (LABiToN), University of Sorocaba (UNISO), Sorocaba, São Paulo 18023-000, Brazil
| | - Joacir do Nascimento
- Faculty of Agronomy and Veterinary Sciences, São Paulo State University (UNESP), Jaboticabal, São Paulo 14884-900, Brazil
| | - Kelly Cristina Gonçalves
- Faculty of Agronomy and Veterinary Sciences, São Paulo State University (UNESP), Jaboticabal, São Paulo 14884-900, Brazil
| | - Ricardo Antônio Polanczyk
- Faculty of Agronomy and Veterinary Sciences, São Paulo State University (UNESP), Jaboticabal, São Paulo 14884-900, Brazil
| | - Leonardo Fernandes Fraceto
- Laboratory of Bioactivity Assessment and Toxicology of Nanomaterials (LABiToN), University of Sorocaba (UNISO), Sorocaba, São Paulo 18023-000, Brazil.
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Antioxidant-mediated control of degradation and drug release from surface-eroding poly(ethylene carbonate). Acta Biomater 2020; 113:210-216. [PMID: 32623099 DOI: 10.1016/j.actbio.2020.06.041] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2020] [Revised: 06/23/2020] [Accepted: 06/26/2020] [Indexed: 11/22/2022]
Abstract
Surface-eroding polymers are of significant interest for various applications in the field of controlled drug delivery. Poly(ethylene carbonate), as an example, offers little control over the rate of degradation and, thus, drug release, which usually conflicts with the requirements for long-acting medications. Here, we challenged an option to decelerate the degradation of poly(ethylene carbonate) in vitro and in vivo. When polymer films loaded with distinct antioxidants (vitamins) along with the model drugs leuprorelin and risperidone were incubated in superoxide radical solution and phagocyte culture, the mass loss and drug release from the delivery vehicle was a function of the type and dose of the utilized antioxidant. Once the polymer surface was "attacked" by reactive oxygen species, the antioxidants were released on demand quenching the polymer-degrading radicals. Accordingly, specific combinations of polymer and radical scavengers resulted in controlled release medications with an extended "life-time" of one month or longer, which is difficult to achieve for poly(ethylene carbonate) in the absence of antioxidants. A comparable degradation and drug release behavior was observed when antioxidant-loaded poly(ethylene carbonate) films were implanted in rats. Furthermore, linear correlations were obtained between the mass loss of the polymer films and the released fraction of drug (with slopes close to 1), a clear indication for the surface erosion of poly(ethylene carbonate) in vitro and in vivo. Overall, an addition of antioxidants to poly(ethylene carbonate)-based controlled drug delivery vehicles represents a reasonable approach to modify the performance of long-acting medications, especially when a "life time" of weeks to months needs to be achieved. STATEMENT OF SIGNIFICANCE: Surface-eroding poly(ethylene carbonate) (PEC) is of significant interest for long-acting injectable formulations. However, PEC offers only little control over the rate of degradation and, thus, drug release kinetics. We describe an option to decelerate the degradation rate of PEC in vitro and in vivo. When polymer films loaded with distinct antioxidants along with model drugs were incubated in superoxide radical solution, phagocyte culture and implanted in rats, their mass loss and drug release was a function of the type and dose of the utilized antioxidant. Accordingly, specific combinations of polymer and radical scavengers resulted in controlled release medications with an extended "life-time" of one month or longer, which is difficult to achieve for PEC in the absence of antioxidants.
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7
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Beck-Broichsitter M. Comparative in vitro degradation of surface-eroding poly(alkylene carbonate)s. Polym Degrad Stab 2020. [DOI: 10.1016/j.polymdegradstab.2020.109186] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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8
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Shi R, Ye J, Li W, Zhang J, Li J, Wu C, Xue J, Zhang L. Infection-responsive electrospun nanofiber mat for antibacterial guided tissue regeneration membrane. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2019; 100:523-534. [PMID: 30948089 DOI: 10.1016/j.msec.2019.03.039] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/06/2018] [Revised: 02/08/2019] [Accepted: 03/10/2019] [Indexed: 01/18/2023]
Abstract
The release of anti-infection drugs in a targeted and efficient manner in response to the attack time and degree of severity of infection is a requirement of new generation implants. Herein, we design an infection-responsive guided tissue regeneration (GTR)/guided bone regeneration (GBR) membrane based on electrospun nanofibers. Polycaprolactone (PCL) nanofiber mats are coated with polydopamine to endow hydroxyl groups on the surface and then functionalized with siloxane to introduce amino groups. Metronidazole (MNA), an antibiotic drug, is esterified and then grafted onto the surface of the modified PCL nanofiber mats via ester linkages. The ester bonds can be selectively hydrolyzed by cholesterol esterase (CE), an enzyme secreted by macrophagocytes accumulated at the site of infection, whose concentration is positively related to the severity of the infection. The drug can be triggered to release from the nanofiber membranes in responsive to the CE. With the increase of the CE concentration, a higher amount of MNA is released from the nanofiber mat, resulting in the enhancement of the antibacterial capability of the MNA-grafted nanofiber mat. The nanofiber mat has good cytocompatibility. This CE-responsive drug delivery system based on the electrospun nanofiber mat is promising as an optimal choice for antibacterial GTR/GBR membrane.
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Affiliation(s)
- Rui Shi
- Beijing Research Institute of Traumatology and Orthopaedics, Beijing 100035, PR China
| | - Jingjing Ye
- Beijing Laboratory of Biomedical Materials, Beijing University of Chemical Technology, Beijing 100029, PR China
| | - Weiyang Li
- Beijing Research Institute of Traumatology and Orthopaedics, Beijing 100035, PR China
| | - Jingshuang Zhang
- Beijing Research Institute of Traumatology and Orthopaedics, Beijing 100035, PR China
| | - Jie Li
- Beijing Laboratory of Biomedical Materials, Beijing University of Chemical Technology, Beijing 100029, PR China
| | - Chengai Wu
- Beijing Research Institute of Traumatology and Orthopaedics, Beijing 100035, PR China
| | - Jiajia Xue
- The Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, GA 30332, United States.
| | - Liqun Zhang
- Beijing Laboratory of Biomedical Materials, Beijing University of Chemical Technology, Beijing 100029, PR China.
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10
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Dong F, Li Y, Yuan X, Wang P, Yang J, Miao L. Highly transparent thermoresponsive surfaces based on tea-stain-inspired chemistry. J Appl Polym Sci 2018. [DOI: 10.1002/app.46694] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Fuxin Dong
- School of Materials Science and Energy Engineering; Foshan University, Jiangwan 1st Road; Foshan Guangdong 528000 People's Republic of China
| | - Yue Li
- School of Materials Science and Energy Engineering; Foshan University, Jiangwan 1st Road; Foshan Guangdong 528000 People's Republic of China
| | - Xiaohua Yuan
- School of Materials Science and Energy Engineering; Foshan University, Jiangwan 1st Road; Foshan Guangdong 528000 People's Republic of China
| | - Ping Wang
- School of Materials Science and Energy Engineering; Foshan University, Jiangwan 1st Road; Foshan Guangdong 528000 People's Republic of China
| | - Junjie Yang
- School of Materials Science and Energy Engineering; Foshan University, Jiangwan 1st Road; Foshan Guangdong 528000 People's Republic of China
| | - Lei Miao
- School of Materials Science and Energy Engineering; Foshan University, Jiangwan 1st Road; Foshan Guangdong 528000 People's Republic of China
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Abstract
Nanotherapeutics, nanoparticles (NPs) loaded with drugs, show the ability of tissue targeting, long circulation and low toxicity compared with free drugs. Endothelium lying the lumen of a blood vessel is a barrier to restrain tissue deposition of nanotherapeutics. Neutrophils, a type of white blood cells, migrate across endothelium during inflammation. There is an emerging concept that in situ targeting of neutrophils allows delivery of nanotherapeutics into deep tissues at disease sites. Here we summarize the recent advances in delivery of nanotherapeutics to inflammatory tissues or tumor microenvironments via neutrophil infiltration. The studies would shift the current paradigm of nanomedicine to biology-driven design of nanotherapeutics. [Formula: see text].
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12
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Synthesis and properties of CO2-based plastics: Environmentally-friendly, energy-saving and biomedical polymeric materials. Prog Polym Sci 2018. [DOI: 10.1016/j.progpolymsci.2018.01.006] [Citation(s) in RCA: 109] [Impact Index Per Article: 18.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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He M, Wang Q, Shi Z, Xie Y, Zhao W, Zhao C. Inflammation-responsive self-regulated drug release from ultrathin hydrogel coating. Colloids Surf B Biointerfaces 2017; 158:518-526. [PMID: 28738291 DOI: 10.1016/j.colsurfb.2017.07.035] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2017] [Revised: 07/01/2017] [Accepted: 07/15/2017] [Indexed: 12/22/2022]
Abstract
Heterotopic ossification(HO) is a potential severe complication after many biomaterial implanting surgeries, and the inflammation environment caused by the implanting-associated infections is considered as the main nosogenesis. Herein, an inflammation-responsive drug release system was designed by chemically conjugating indometacin (via ester group) onto hydrogel coating to realize local self-regulated drug release to prevent HO. In our strategy, poly(3-mercaptopropyl)trimethoxysilane-co-acrylic acrylate and polyvinyl alcohol (providing anchoring sites for drug molecules) were firstly synthesized and functionalized with ene-groups, then a hydrogel layer was formed and covalently attached onto thiol-modified substrate via thiol-ene click chemistry, followed by grafting indometacin. A porous structure of the attached hydrogel layer was observed by scanning electron microscopy, and the presence of drug molecules in the hydrogel layer was confirmed by X-ray photoelectron spectroscopy and UV-vis absorption spectra. The drug release could be triggered under the mimicking inflammation environment, and the release rate was responsive to the inflammation degree. In addition, after attaching the hydrogel coating, the substrate showed low cytotoxicity, and high promotion for cell adhesion and proliferation. The excellent hemocompatibility of the hydrogel coating was also demonstrated by prolonged clotting time and suppressed platelet adhesion. This work suggests that the inflammation-responsive indometacin conjugated hydrogel coating has great potential to be used for prophylaxis HO.
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Affiliation(s)
- Min He
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, People's Republic of China
| | - Qian Wang
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, People's Republic of China
| | - Zhenqiang Shi
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, People's Republic of China
| | - Yi Xie
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, People's Republic of China
| | - Weifeng Zhao
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, People's Republic of China.
| | - Changsheng Zhao
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, People's Republic of China.
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Bohr A, Wang Y, Harmankaya N, Water JJ, Baldursdottír S, Almdal K, Beck-Broichsitter M. Molecular weight-dependent degradation and drug release of surface-eroding poly(ethylene carbonate). Eur J Pharm Biopharm 2017; 115:140-148. [DOI: 10.1016/j.ejpb.2017.02.011] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2016] [Indexed: 02/07/2023]
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15
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Liu Y, Yang J, Wang X, Liu J, Wang Z, Liu H, Chen L. In vitro and in vivo evaluation of redox-responsive sorafenib carrier nanomicelles synthesized from poly (acryic acid) -cystamine hydrochloride-D-α-tocopherol succinate. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2016; 27:1729-1747. [DOI: 10.1080/09205063.2016.1236883] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Yu Liu
- Department of Pharmaceutics, School of Pharmaceutical Sciences, Liaoning University, Shenyang, P.R. China
| | - Jia Yang
- Department of Pharmaceutics, School of Pharmaceutical Sciences, Liaoning University, Shenyang, P.R. China
| | - Xin Wang
- Department of Pharmaceutics, School of Pharmaceutical Sciences, Liaoning University, Shenyang, P.R. China
| | - Ju Liu
- Department of Pharmaceutics, School of Pharmaceutical Sciences, Liaoning University, Shenyang, P.R. China
| | - Zhaobo Wang
- Department of Pharmaceutics, School of Pharmaceutical Sciences, Liaoning University, Shenyang, P.R. China
| | - Hongsheng Liu
- Research Center for Computer Simulating and Information Processing of Bio-macromolecules of Liaoning Province, Shenyang, P.R. China
| | - Lijiang Chen
- Department of Pharmaceutics, School of Pharmaceutical Sciences, Liaoning University, Shenyang, P.R. China
- Research Center for Computer Simulating and Information Processing of Bio-macromolecules of Liaoning Province, Shenyang, P.R. China
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Bohr A, Water JJ, Wang Y, Arnfast L, Beck-Broichsitter M. Potential of surface-eroding poly(ethylene carbonate) for drug delivery to macrophages. Int J Pharm 2016; 511:814-20. [DOI: 10.1016/j.ijpharm.2016.07.075] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2016] [Revised: 07/28/2016] [Accepted: 07/29/2016] [Indexed: 01/06/2023]
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17
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Wang Y, Han N, Zhao Q, Bai L, Li J, Jiang T, Wang S. Redox-responsive mesoporous silica as carriers for controlled drug delivery: a comparative study based on silica and PEG gatekeepers. Eur J Pharm Sci 2015; 72:12-20. [PMID: 25701727 DOI: 10.1016/j.ejps.2015.02.008] [Citation(s) in RCA: 64] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2014] [Revised: 01/15/2015] [Accepted: 02/11/2015] [Indexed: 01/15/2023]
Abstract
Hybrid mesoporous silica nanoparticles (MSNs) modified with polymer polyethylene glycol (PEG) through the biodegradable disulfide bonds were prepared to achieve 'on demand' drug release. In this system, PEG chains were chosen as the representative gatekeepers that can block drugs within the mesopores of MSNs. After the addition of glutathione (GSH), the gatekeepers were removed from the pore outlets of MSNs, followed by the release of encapsulated drugs. In this research, the effects of grafting density of gatekeepers on the drug release and biocompatibility of silica carriers were also investigated. First, PEG modified MSNs were prepared by the condensation reaction between the carboxyl groups of MSN and the hydroxyl of PEG. The structure of the resultant MSN-SS-PEG was characterized by transmission electron microscopy (TEM), nitrogen adsorption/desorption isotherms analysis and Fourier transform infrared spectroscopy (FTIR). Rhodamine B (RhB) as the model drug was loaded into MSNs. The in vitro assay results indicated that RhB was released rapidly after the addition of 10 mM GSH; M1-SS-PEG had the best capping efficiency compared with M0.5 and M1.5 groups. Moreover, hemolysis assay, serum protein adsorption and cell viability test indicated that with the increase of PEG grafting density, the biocompatibility of silica carriers increased.
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Affiliation(s)
- Ying Wang
- Department of Pharmaceutics, Shenyang Pharmaceutical University, 103 Wenhua Road, Shenhe District, Shenyang, Liaoning Province 110016, PR China
| | - Ning Han
- Department of Pharmaceutics, Shenyang Pharmaceutical University, 103 Wenhua Road, Shenhe District, Shenyang, Liaoning Province 110016, PR China
| | - Qinfu Zhao
- Department of Pharmaceutics, Shenyang Pharmaceutical University, 103 Wenhua Road, Shenhe District, Shenyang, Liaoning Province 110016, PR China
| | - Ling Bai
- Department of Pharmaceutics, Shenyang Pharmaceutical University, 103 Wenhua Road, Shenhe District, Shenyang, Liaoning Province 110016, PR China
| | - Jia Li
- Department of Pharmaceutics, Shenyang Pharmaceutical University, 103 Wenhua Road, Shenhe District, Shenyang, Liaoning Province 110016, PR China
| | - Tongying Jiang
- Department of Pharmaceutics, Shenyang Pharmaceutical University, 103 Wenhua Road, Shenhe District, Shenyang, Liaoning Province 110016, PR China
| | - Siling Wang
- Department of Pharmaceutics, Shenyang Pharmaceutical University, 103 Wenhua Road, Shenhe District, Shenyang, Liaoning Province 110016, PR China.
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Dalla-Bona AC, Schmehl T, Gessler T, Seeger W, Beck-Broichsitter M. Systematic aging of degradable nanosuspension ameliorates vibrating-mesh nebulizer performance. Drug Dev Ind Pharm 2014; 41:1704-9. [PMID: 25519975 DOI: 10.3109/03639045.2014.993399] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
CONTEXT The process of vibrating-mesh nebulization is affected by sample physicochemical properties. Exemplary, electrolyte supplementation of diverse formulations facilitated the delivery of adequate aerosols for deep lung deposition. OBJECTIVE This study addressed the impact of storage conditions of poly(lactide-co-glycolide) nanosuspension on aerosol properties when nebulized by the eFlow®rapid. MATERIALS AND METHODS First, purified nanosuspensions were supplemented with electrolytes (i.e. sodium chloride, lactic and glycolic acid). Second, the degradable nanoparticles (NP) were incubated at different temperatures (i.e. 4, 22 and 36 °C) for up to two weeks. The effect of formulation supplementation and storage on aerosol characteristics was studied by laser diffraction and correlated with the sample conductivity. RESULTS AND DISCUSSION Nebulization of purified nanosuspensions resulted in droplet diameters of >7.0 µm. However, electrolyte supplementation and storage, which led to an increase in sample conductivity (>10-20 µS/cm), were capable of providing smaller droplet diameters during vibrating-mesh nebulization (≤5.0 µm). No relevant change of NP properties (i.e. size, morphology, remaining mass and molecular weight of the employed polymer) was observed when incubated at 22 °C for two weeks. CONCLUSION Sample aging is an alternative to electrolyte supplementation in order to ameliorate the aerosol characteristics of degradable NP formulations when nebulized by vibrating-mesh technology.
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Affiliation(s)
- Alexandra C Dalla-Bona
- a Department of Internal Medicine , Medical Clinic II, Justus-Liebig-Universität , Giessen , Germany
| | - Thomas Schmehl
- a Department of Internal Medicine , Medical Clinic II, Justus-Liebig-Universität , Giessen , Germany
| | - Tobias Gessler
- a Department of Internal Medicine , Medical Clinic II, Justus-Liebig-Universität , Giessen , Germany
| | - Werner Seeger
- a Department of Internal Medicine , Medical Clinic II, Justus-Liebig-Universität , Giessen , Germany
| | - Moritz Beck-Broichsitter
- a Department of Internal Medicine , Medical Clinic II, Justus-Liebig-Universität , Giessen , Germany
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Mortato M, Argentiere S, De Gregorio GL, Gigli G, Blasi L. Enzyme-responsive multifunctional surfaces for controlled uptake/release of (bio)molecules. Colloids Surf B Biointerfaces 2014; 123:89-95. [PMID: 25280608 DOI: 10.1016/j.colsurfb.2014.08.034] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2014] [Revised: 07/31/2014] [Accepted: 08/25/2014] [Indexed: 12/26/2022]
Abstract
The current trend in the development of biomaterials is towards bioactive and biodegradable systems. In particular, enzyme-responsive structures are useful tools to realize biodegradable surfaces for the controlled delivery of biomolecules/drugs through a triggered surface erosion process. Up to now, enzyme-responsive structures have been designed by covalent linkage between synthetic polymers and biodegradable functionalities that are responsive to chemical and biological cues (i.e. proteases or pH) [1-4]. Here, we present a novel approach to achieve enzyme-responsive surface-attached networks by exploiting the non-covalent interaction between streptavidin and biotin. The functional component of this three-dimensional (3D) structure is a layer of biotinylated peptides that are degraded by the action of specific proteases. The system was stable under typical physiological conditions; however, it was efficiently degraded upon enzyme exposure. Further, the controlled release of biomolecules and drugs--previously entrapped into the surface-attached network--was demonstrated to occur as a consequence of the enzymatic cleavage. This versatile approach does not require complex chemical procedures. Interestingly, it can be easily adapted to different enzyme-peptide partners and therefore is very attractive for tissue replacement, drug delivery and biosensing.
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Affiliation(s)
- Mariangela Mortato
- University of Salento, Superior School ISUFI, Arnesano, I-73100 Lecce, Italy; CNR-Institute of Nanoscience, NNL-Lecce, via Arnesano, I-73100 Lecce, Italy
| | | | - Gian Luca De Gregorio
- Center for Biomolecular Nanotechnologies - Fondazione Istituto Italiano di Tecnologia, via Barsanti, 73010 Arnesano Lecce, Italy
| | - Giuseppe Gigli
- University of Salento, Superior School ISUFI, Arnesano, I-73100 Lecce, Italy; CNR-Institute of Nanoscience, NNL-Lecce, via Arnesano, I-73100 Lecce, Italy; Center for Biomolecular Nanotechnologies - Fondazione Istituto Italiano di Tecnologia, via Barsanti, 73010 Arnesano Lecce, Italy
| | - Laura Blasi
- CNR-Institute of Nanoscience, NNL-Lecce, via Arnesano, I-73100 Lecce, Italy.
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Perisé-Barrios AJ, Jiménez JL, Domínguez-Soto A, de la Mata FJ, Corbí AL, Gomez R, Muñoz-Fernandez MÁ. Carbosilane dendrimers as gene delivery agents for the treatment of HIV infection. J Control Release 2014; 184:51-7. [PMID: 24721235 DOI: 10.1016/j.jconrel.2014.03.048] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2014] [Revised: 03/27/2014] [Accepted: 03/31/2014] [Indexed: 11/30/2022]
Abstract
Despite the use of siRNA in the downregulation of HIV-1 replication which has been reported, CD4 T lymphocytes are difficult to transfect with non-viral vectors. We determined whether second generation carbosilane dendrimers (2G-NN16 and 2G-03NN24) may be efficient transfectants in CD4 T lymphocytes. Dendrimers were also tested on macrophages to determine whether they can modify macrophage phenotype and induce an inflammatory response. The nanoconjugate formed by 2G-03NN24/siRNA-Nef presents the highest inhibition of HIV-1 replication. Dendrimers presented safety properties because they did not induce proliferation on CD4 T lymphocytes and decrease the release of TNFα and IL-12p40 by macrophages. Both dendrimers also decrease the phagocytosis activity. Additionally, 2G-03NN24 dendrimer decreases the CCL2 and CCR2 expression in macrophages. Carbosilane dendrimers 2G-NN16 and 2G-03NN24 can be used as efficient non-viral vectors for gene therapy applications, mainly in the treatment of HIV infection.
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Affiliation(s)
- Ana Judith Perisé-Barrios
- Laboratorio Inmuno-Biología Molecular, Hospital General Universitario Gregorio Marañón and Instituto de Investigación Sanitaria Gregorio Marañón, Madrid, Spain; Networking Research Center on Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Madrid, Spain
| | - José Luis Jiménez
- Plataforma de Laboratorio, Hospital General Universitario Gregorio Marañón, Madrid, Spain; Networking Research Center on Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Madrid, Spain
| | - Angeles Domínguez-Soto
- Centro de Investigaciones Biológicas, Consejo Superior de Investigaciones Científicas (CSIC), Madrid, Spain
| | - F Javier de la Mata
- Dpto. de Química Orgánica y Química Inorgánica, Universidad de Alcalá, Campus Universitario, Alcalá de Henares, Madrid E-28871, Spain; Networking Research Center on Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Madrid, Spain
| | - Angel L Corbí
- Centro de Investigaciones Biológicas, Consejo Superior de Investigaciones Científicas (CSIC), Madrid, Spain
| | - Rafael Gomez
- Dpto. de Química Orgánica y Química Inorgánica, Universidad de Alcalá, Campus Universitario, Alcalá de Henares, Madrid E-28871, Spain; Networking Research Center on Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Madrid, Spain
| | - María Ángeles Muñoz-Fernandez
- Laboratorio Inmuno-Biología Molecular, Hospital General Universitario Gregorio Marañón and Instituto de Investigación Sanitaria Gregorio Marañón, Madrid, Spain; Networking Research Center on Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Madrid, Spain.
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