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Wu Y, Liu P, Mehrjou B, Chu PK. Interdisciplinary-Inspired Smart Antibacterial Materials and Their Biomedical Applications. Adv Mater 2024; 36:e2305940. [PMID: 37469232 DOI: 10.1002/adma.202305940] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/19/2023] [Revised: 07/14/2023] [Accepted: 07/17/2023] [Indexed: 07/21/2023]
Abstract
The discovery of antibiotics has saved millions of lives, but the emergence of antibiotic-resistant bacteria has become another problem in modern medicine. To avoid or reduce the overuse of antibiotics in antibacterial treatments, stimuli-responsive materials, pathogen-targeting nanoparticles, immunogenic nano-toxoids, and biomimetic materials are being developed to make sterilization better and smarter than conventional therapies. The common goal of smart antibacterial materials (SAMs) is to increase the antibiotic efficacy or function via an antibacterial mechanism different from that of antibiotics in order to increase the antibacterial and biological properties while reducing the risk of drug resistance. The research and development of SAMs are increasingly interdisciplinary because new designs require the knowledge of different fields and input/collaboration from scientists in different fields. A good understanding of energy conversion in materials, physiological characteristics in cells and bacteria, and bactericidal structures and components in nature are expected to promote the development of SAMs. In this review, the importance of multidisciplinary insights for SAMs is emphasized, and the latest advances in SAMs are categorized and discussed according to the pertinent disciplines including materials science, physiology, and biomimicry.
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Affiliation(s)
- Yuzheng Wu
- Department of Physics, Department of Materials Science and Engineering and Department of Biomedical Engineering, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong, 999077, China
| | - Pei Liu
- Department of Physics, Department of Materials Science and Engineering and Department of Biomedical Engineering, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong, 999077, China
| | - Babak Mehrjou
- Department of Physics, Department of Materials Science and Engineering and Department of Biomedical Engineering, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong, 999077, China
| | - Paul K Chu
- Department of Physics, Department of Materials Science and Engineering and Department of Biomedical Engineering, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong, 999077, China
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2
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Xu X, Wang Z, Li M, Su Y, Zhang Q, Zhang S, Hu J. Reconstructed Hierarchically Structured Keratin Fibers with Shape-Memory Features Based on Reversible Secondary-Structure Transformation. Adv Mater 2023; 35:e2304725. [PMID: 37417728 DOI: 10.1002/adma.202304725] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/18/2023] [Revised: 06/27/2023] [Accepted: 07/03/2023] [Indexed: 07/08/2023]
Abstract
Biocompatible and biodegradable shape-memory polymers have gained popularity as smart materials, offering a wide range of applications and environmental benefits. Herein, the possibility of fabricating regenerated water-triggered shape-memory keratin fibers from wool and cellulose in a more effective and environmentally friendly manner is investigated. The regenerated keratin fibers exhibit comparable shape-memory performance to other hydration-responsive materials, with a shape-fixity ratio of 94.8 ± 2.15% and a shape-recovery rate of 81.4 ± 3.84%. Owing to their well-preserved secondary structure and cross-linking network, keratin fibers exhibit outstanding water-stability and wet stretchability, with a maximum tensile strain of 362 ± 15.9%. In this system, the reconfiguration of the protein secondary structure between α-helix and β-sheet is investigated as the fundamental actuation mechanism in response to hydration. This responsiveness is studied under force loading and unloading along the fiber axis. Hydrogen bonds act as the "switches" clicked by water molecules to trigger the shape-memory effect, while disulfide bonds and cellulose nanocrystals play the role of "net-points" to maintain the permanent shape of the material. Water-triggered shape-memory keratin fibers are manipulable and exhibit potential in the fabrication of textile actuators, which may be applied in smart apparel and programmable biomedical devices.
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Affiliation(s)
- Xiaoyun Xu
- Department of Biomedical Engineering, City University of Hong Kong, Hong Kong SAR, 999077, China
| | - Zhuang Wang
- Department of Biomedical Engineering, City University of Hong Kong, Hong Kong SAR, 999077, China
| | - Min Li
- Department of Biomedical Engineering, City University of Hong Kong, Hong Kong SAR, 999077, China
| | - Yupei Su
- Department of Biomedical Engineering, City University of Hong Kong, Hong Kong SAR, 999077, China
| | - Qi Zhang
- Department of Biomedical Engineering, City University of Hong Kong, Hong Kong SAR, 999077, China
| | - Shuai Zhang
- Department of Biomedical Engineering, City University of Hong Kong, Hong Kong SAR, 999077, China
| | - Jinlian Hu
- Department of Biomedical Engineering, City University of Hong Kong, Hong Kong SAR, 999077, China
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Yang C, Shi X, Deng H, Du Y. Antifatigue Hydration-Induced Polysaccharide Hydrogel Actuators Inspired by Crab Joint Wrinkles. ACS Appl Mater Interfaces 2022; 14:6251-6260. [PMID: 35061354 DOI: 10.1021/acsami.1c24430] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Joint wrinkles in animals facilitate frequent bending and contribute to the duration of the joint. Inspired by the morphology and function of joint wrinkles, we developed a bionic hydration-induced polymeric actuator with constructed wrinkles at the selected area. Specifically, we adopt electrical writing to create defined single and double cross-linking regions on chitosan (CS) hydrogel. The covalent cross-linking network was constructed by electrical writing-induced covalent cross-linking between CS chains and epichlorohydrin. Subsequent treatment of sodium dodecyl sulfate allows electrostatic cross-linking at the unwritten area with the simultaneous formation of surface wrinkles. The resulting single and double cross-linking hydrogel demonstrates spontaneous deformation behaviors by the influx and efflux of H2O to the electrostatic cross-linking domain under different ion concentrations. Importantly, the wrinkle structure endows the hydrogel with extraordinary antifatigue bending performance. By regulating the surface morphology and spatial cross-linking, we can design novel biomimetic polysaccharide hydrogel actuators with fascinating functions.
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Affiliation(s)
- Chen Yang
- School of Resource and Environmental Science, Hubei Engineering Center of Natural Polymers-Based Medical Materials, Hubei Biomass-Resource Chemistry and Environmental Biotechnology Key Laboratory, Hubei International Scientific and Technological Cooperation Base of Sustainable Resource and Energy, Wuhan University, Wuhan 430079, China
| | - Xiaowen Shi
- School of Resource and Environmental Science, Hubei Engineering Center of Natural Polymers-Based Medical Materials, Hubei Biomass-Resource Chemistry and Environmental Biotechnology Key Laboratory, Hubei International Scientific and Technological Cooperation Base of Sustainable Resource and Energy, Wuhan University, Wuhan 430079, China
| | - Hongbing Deng
- School of Resource and Environmental Science, Hubei Engineering Center of Natural Polymers-Based Medical Materials, Hubei Biomass-Resource Chemistry and Environmental Biotechnology Key Laboratory, Hubei International Scientific and Technological Cooperation Base of Sustainable Resource and Energy, Wuhan University, Wuhan 430079, China
| | - Yumin Du
- School of Resource and Environmental Science, Hubei Engineering Center of Natural Polymers-Based Medical Materials, Hubei Biomass-Resource Chemistry and Environmental Biotechnology Key Laboratory, Hubei International Scientific and Technological Cooperation Base of Sustainable Resource and Energy, Wuhan University, Wuhan 430079, China
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Xu P, Wang L, Zhang X, Yan J, Liu W. High-Performance Smart Hydrogels with Redox-Responsive Properties Inspired by Scallop Byssus. ACS Appl Mater Interfaces 2022; 14:214-224. [PMID: 34935338 DOI: 10.1021/acsami.1c18610] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Smart hydrogels with versatile properties, including a tunable gelation time, nonswelling attributes, and biocompatibility, are in great need in the biomedical field. To meet this urgent demand, we explored novel biomaterials with the desired properties from sessile marine organisms. To this end, a novel protein, Sbp9, derived from scallop byssus was extensively investigated, which features typical epidermal growth factor-like (EGFL) multiple repetitive motifs. Our current work demonstrated that the key fragment of Sbp9 (calcium-binding domain (CBD) and 4 EGFL repeats (CE4)) was able to form a smart hydrogel driven by noncovalent interactions and facilitated by disulfide bonds. More importantly, this smart hydrogel demonstrates several desirable and beneficial features, which could offset the drawbacks of typical protein-based hydrogels, including (1) a redox-responsive gelation time (from <1 to 60 min); (2) tunable mechanical properties, nonswelling abilities, and an appropriate microstructure; and (3) good biocompatibility and degradability. Furthermore, proof-of-concept demonstrations showed that the newly discovered hydrogel could be used for anticancer drug delivery and cell encapsulation. Taken together, a smart hydrogel inspired by marine sessile organisms with desirable properties was generated and characterized and demonstrated to have extensive applicability potential in biomedical applications, including tissue engineering and drug release.
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Affiliation(s)
- Pingping Xu
- Sars-Fang Centre, MOE Key Laboratory of Marine Genetics and Breeding, College of Marine Life Sciences, Ocean University of China, Qingdao 266100, China
- Laboratory for Marine Biology and Biotechnology, Pilot National Laboratory for Marine Science and Technology, Qingdao 266237, China
| | - Lulu Wang
- Sars-Fang Centre, MOE Key Laboratory of Marine Genetics and Breeding, College of Marine Life Sciences, Ocean University of China, Qingdao 266100, China
- Laboratory for Marine Biology and Biotechnology, Pilot National Laboratory for Marine Science and Technology, Qingdao 266237, China
| | - Xiaokang Zhang
- Sars-Fang Centre, MOE Key Laboratory of Marine Genetics and Breeding, College of Marine Life Sciences, Ocean University of China, Qingdao 266100, China
- Laboratory for Marine Biology and Biotechnology, Pilot National Laboratory for Marine Science and Technology, Qingdao 266237, China
| | - Jicheng Yan
- Sars-Fang Centre, MOE Key Laboratory of Marine Genetics and Breeding, College of Marine Life Sciences, Ocean University of China, Qingdao 266100, China
| | - Weizhi Liu
- Sars-Fang Centre, MOE Key Laboratory of Marine Genetics and Breeding, College of Marine Life Sciences, Ocean University of China, Qingdao 266100, China
- Laboratory for Marine Biology and Biotechnology, Pilot National Laboratory for Marine Science and Technology, Qingdao 266237, China
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Mattmann M, De Marco C, Briatico F, Tagliabue S, Colusso A, Chen X, Lussi J, Chautems C, Pané S, Nelson B. Thermoset Shape Memory Polymer Variable Stiffness 4D Robotic Catheters. Adv Sci (Weinh) 2022; 9:e2103277. [PMID: 34723442 PMCID: PMC8728812 DOI: 10.1002/advs.202103277] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/02/2021] [Indexed: 06/13/2023]
Abstract
Variable stiffness catheters are typically composed of an encapsulated core. The core is usually composed of a low melting point alloy (LMPA) or a thermoplastic polymer (TP). In both cases, there is a need to encapsulate the core with an elastic material. This imposes a limit to the volume of variable stiffness (VS) material and limits miniaturization. This paper proposes a new approach that relies on the use of thermosetting materials. The variable stiffness catheter (VSC) proposed in this work eliminates the necessity for an encapsulation layer and is made of a unique biocompatible thermoset polymer with an embedded heating system. This significantly reduces the final diameter, improves manufacturability, and increases safety in the event of complications. The device can be scaled to sub-millimeter dimensions, while maintaining a high stiffness change. In addition, integration into a magnetic actuation system allows for precise actuation of one or multiple tools.
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Affiliation(s)
- Michael Mattmann
- Institute of Robotics and Intelligent SystemsETH ZürichTannenstrasse 3ZurichCH‐8092Switzerland
| | - Carmela De Marco
- Institute of Robotics and Intelligent SystemsETH ZürichTannenstrasse 3ZurichCH‐8092Switzerland
| | - Francesco Briatico
- Department of ChemistryMaterials and Chemical EngineeringPolitecnico di MilanoMilan20131Italy
| | - Stefano Tagliabue
- Department of ChemistryMaterials and Chemical EngineeringPolitecnico di MilanoMilan20131Italy
| | - Aron Colusso
- Institute of Robotics and Intelligent SystemsETH ZürichTannenstrasse 3ZurichCH‐8092Switzerland
| | - Xiang‐Zhong Chen
- Institute of Robotics and Intelligent SystemsETH ZürichTannenstrasse 3ZurichCH‐8092Switzerland
| | - Jonas Lussi
- Institute of Robotics and Intelligent SystemsETH ZürichTannenstrasse 3ZurichCH‐8092Switzerland
| | - Christophe Chautems
- Institute of Robotics and Intelligent SystemsETH ZürichTannenstrasse 3ZurichCH‐8092Switzerland
| | - Salvador Pané
- Institute of Robotics and Intelligent SystemsETH ZürichTannenstrasse 3ZurichCH‐8092Switzerland
| | - Bradley Nelson
- Institute of Robotics and Intelligent SystemsETH ZürichTannenstrasse 3ZurichCH‐8092Switzerland
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Zalmi GA, Jadhav RW, Mirgane HA, Bhosale SV. Recent Advances in Aggregation-Induced Emission Active Materials for Sensing of Biologically Important Molecules and Drug Delivery System. Molecules 2021; 27:150. [PMID: 35011382 PMCID: PMC8746362 DOI: 10.3390/molecules27010150] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2021] [Revised: 12/21/2021] [Accepted: 12/24/2021] [Indexed: 12/26/2022] Open
Abstract
The emergence and development of aggregation induced emission (AIE) have attracted worldwide attention due to its unique photophysical phenomenon and for removing the obstacle of aggregation-caused quenching (ACQ) which is the most detrimental process thereby making AIE an important and promising aspect in various fields of fluorescent material, sensing, bioimaging, optoelectronics, drug delivery system, and theranostics. In this review, we have discussed insights and explored recent advances that are being made in AIE active materials and their application in sensing, biological cell imaging, and drug delivery systems, and, furthermore, we explored AIE active fluorescent material as a building block in supramolecular chemistry. Herein, we focus on various AIE active molecules such as tetraphenylethylene, AIE-active polymer, quantum dots, AIE active metal-organic framework and triphenylamine, not only in terms of their synthetic routes but also we outline their applications. Finally, we summarize our view of the construction and application of AIE-active molecules, which thus inspiring young researchers to explore new ideas, innovations, and develop the field of supramolecular chemistry in years to come.
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Affiliation(s)
| | | | | | - Sheshanath V. Bhosale
- School of Chemical Sciences, Goa University, Taleigao Plateau 403206, India; (G.A.Z.); (R.W.J.); (H.A.M.)
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Abstract
Ultraviolet (UV)-curable thermoset shape memory polymers (TSMPs) with high recovery stress but mild glass transition temperature (Tg) are highly desired for 3D/4D printing lightweight load-bearing structures and devices. However, a bottleneck is that high recovery stress usually means high Tg. For a few TSMPs with high recovery stress, their Tg values are close to the decomposition temperature, and thus, the shape memory effect cannot be triggered safely and effectively. While machine learning (ML) has served as a useful tool to discover new materials and drugs, the grand challenge of using ML to discover new TSMPs persists in the very limited data available. Here, we report an enhanced ML approach by combining the transfer learning-variational autoencoder with a weighted-vector combination method. By learning a large data set with drug molecules in a pretraining process, we were able to effectively map the TSMPs to a hidden space that is much closer to a Gaussian distribution. Through this approach, we created a large compositional space and were able to discover five new types of UV-curable TSMPs with desired properties, one of which was validated by the experiments. Our contribution includes (1) representing the features of TSMPs by drug molecules to overcome the barrier of a limited training data set and (2) developing a ML framework that is able to overcome the barrier of mapping the molar ratio information. It is shown that this approach can effectively learn TSMP features by utilizing the relatedness between the data-scarce (and biased) TSMP target and data-abundant drug source, and the result is much more accurate and more robust than the benchmark set by the support vector machine method using direct label encoding and Morgan encoding. Therefore, it is believed that this framework is a state-of-the-art study in the TSMP field. This study opens new opportunities for discovering not only new TSMPs but also other thermoset polymers.
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Affiliation(s)
- Cheng Yan
- Department of Mechanical & Industrial Engineering, Louisiana State University, Baton Rouge, Louisiana 70803, United States
| | - Xiaming Feng
- Department of Mechanical & Industrial Engineering, Louisiana State University, Baton Rouge, Louisiana 70803, United States
| | - Guoqiang Li
- Department of Mechanical & Industrial Engineering, Louisiana State University, Baton Rouge, Louisiana 70803, United States
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Naghdi S, Rezaei M, Abdollahi M. A starch-based pH-sensing and ammonia detector film containing betacyanin of paperflower for application in intelligent packaging of fish. Int J Biol Macromol 2021; 191:161-170. [PMID: 34536478 DOI: 10.1016/j.ijbiomac.2021.09.045] [Citation(s) in RCA: 37] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2021] [Revised: 08/24/2021] [Accepted: 09/09/2021] [Indexed: 11/30/2022]
Abstract
An easy-to-use food packaging label with pH and ammonia sensitivity was developed by adding betacyanin (5, 10 and 15 mg per g of starch) from flowers of paperflower (Bougainvillea glabra) to potato starch film made using the solvent casting method. The betacyanin was well dispersed into the starch matrix and formed new interactions with it as revealed by FTIR. The film containing 15 mg/g of betacyanin showed a color change from light pink to yellow as a response to pH adjustment of between 2 to 13. It was also able to detect the presence of ammonia in a range of 0.1 and 0.01 mg of ammonia per ml of water. Surface hydrophobicity and water vapor barrier capacity of the starch film increased by addition of the betacyanin, yet their mechanical strength decreased in the presence of the betacyanin. The ability of the film in the real-time indication of fish quality as a label was also evaluated during the storage of Caspian sprat at 4 °C. A visual change in the color of the packaging label from pink to yellow in parallel with the increase in the total volatile basic nitrogen (TVB-N), microbial count of the fish samples was detected. The starch/betacyanin film could be a novel intelligent label for application in food packaging.
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Affiliation(s)
- Shahab Naghdi
- Seafood Processing Department, Marine Sciences Faculty, Tarbiat Modares University, Noor, Iran
| | - Masoud Rezaei
- Seafood Processing Department, Marine Sciences Faculty, Tarbiat Modares University, Noor, Iran.
| | - Mehdi Abdollahi
- Department of Biology and Biological Engineering-Food and Nutrition Science, Chalmers University of Technology, SE 412 96 Gothenburg, Sweden
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Masek A, Plota A, Chrzastowska J, Piotrowska M. Novel Hybrid Polymer Composites Based on Anthraquinone and Eco-Friendly Dyes with Potential for Use in Intelligent Packaging Materials. Int J Mol Sci 2021; 22:ijms222212524. [PMID: 34830404 PMCID: PMC8618499 DOI: 10.3390/ijms222212524] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2021] [Revised: 11/10/2021] [Accepted: 11/17/2021] [Indexed: 01/13/2023] Open
Abstract
This study aimed to present the influence of bio-based and anthraquinone dyes and their combinations on the optical properties of ethylene-propylene (EPM) composites after thermo-oxidative and climatic aging. Therefore, the chosen polymer was filled with a natural, plant-origin flavonoid—quercetin, and with two commercial anthraquinone dyes (C.I. Solvent Yellow 163 and C.I. Solvent Red 207). The manufactured polymer composites were subjected to accelerated aging tests: weathering and thermo-oxidation, respectively. Examination of the materials’ properties indicated that the combination of synthetic and natural dyes can result in better resistance to oxidizing agents and higher thermal stability of ethylene-propylene products. Moreover, color change of quercetin-containing samples due to exposure to simulated atmospheric conditions could be a promising solution for use as aging indicators in intelligent packaging materials that will inform about the ongoing degradation process. Another interesting finding is that these samples exhibited good fungistatic activity against Candida albicans yeast and Aspergillus niger mold. Overall, this novel solution based on hybrid polymer composites containing natural and commercial dyes is a more environmentally friendly alternative to traditional materials used in the plastic packaging industry with better and more desirable properties.
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Affiliation(s)
- Anna Masek
- Faculty of Chemistry, Institute of Polymer and Dye Technology, Lodz University of Technology, Stefanowskiego 16, 90-537 Lodz, Poland; (A.P.); (J.C.)
- Correspondence:
| | - Angelika Plota
- Faculty of Chemistry, Institute of Polymer and Dye Technology, Lodz University of Technology, Stefanowskiego 16, 90-537 Lodz, Poland; (A.P.); (J.C.)
| | - Julia Chrzastowska
- Faculty of Chemistry, Institute of Polymer and Dye Technology, Lodz University of Technology, Stefanowskiego 16, 90-537 Lodz, Poland; (A.P.); (J.C.)
| | - Małgorzata Piotrowska
- Faculty of Biotechnology and Food Sciences, Institute of Fermentation Technology and Microbiology, Lodz University of Technology, Wolczanska 171/173, 90-530 Lodz, Poland;
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Luo K, Wang L, Tang J, Zeng X, Chen X, Zhang P, Zhou S, Li J, Zuo Y. Enhanced biomineralization of shape memory composite scaffolds from citrate functionalized amorphous calcium phosphate for bone repair. J Mater Chem B 2021; 9:9191-9203. [PMID: 34698324 DOI: 10.1039/d1tb01554k] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Traditional shape memory polymers (SMPs) could avoid large volume trauma during implantation; however, for bone repair, scaffolds with high porosity and biomineralization are essential to promote bone regeneration. A novel porous composite scaffold with high biomineralization activity was developed by sequential gas foaming and a freeze-drying method. The results showed that the cross-linked block structure of the polymer matrix presented excellent shape memory properties, and osteogenesis was promoted by citrate functionalized amorphous calcium phosphate (CCACP). CCACP improved the mechanical strength of the scaffold, and the synergistic effect of CCACP and PEG promotes hydrophilicity and further promoted cell adhesion. Bending experiments indicated that the shape-memory effect of the scaffolds could be varied by varying the CCACP content. In addition, hydroxyapatite deposition was sped up as CCACP accelerated the mineralization of the scaffolds. Moreover, the result of the CCK-8 assessment suggested that composite scaffolds exhibited high biocompatibility, and the cells extended out abundant filopodia to adhere onto the scaffolds. In rat bone defect models, the obtained scaffolds promoted new bone formation compared to the control group. The developed composite scaffolds show potential for minimally invasive bone repair application.
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Affiliation(s)
- Kun Luo
- College of Materials, Chemistry & Chemical Engineering, Chengdu University of Technology, Chengdu 610059, Sichuan, P. R. China.
| | - Li Wang
- College of Materials, Chemistry & Chemical Engineering, Chengdu University of Technology, Chengdu 610059, Sichuan, P. R. China.
- College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Jiajing Tang
- Research Center for Nano-biomaterials, Analytical & Testing Center, Sichuan University, Chengdu 610064, China
| | - Xiyang Zeng
- College of Materials, Chemistry & Chemical Engineering, Chengdu University of Technology, Chengdu 610059, Sichuan, P. R. China.
| | - Xiaohu Chen
- College of Materials, Chemistry & Chemical Engineering, Chengdu University of Technology, Chengdu 610059, Sichuan, P. R. China.
| | - Peicong Zhang
- College of Materials, Chemistry & Chemical Engineering, Chengdu University of Technology, Chengdu 610059, Sichuan, P. R. China.
| | - Shiyi Zhou
- College of Materials, Chemistry & Chemical Engineering, Chengdu University of Technology, Chengdu 610059, Sichuan, P. R. China.
| | - Junfeng Li
- College of Materials, Chemistry & Chemical Engineering, Chengdu University of Technology, Chengdu 610059, Sichuan, P. R. China.
| | - Yi Zuo
- Research Center for Nano-biomaterials, Analytical & Testing Center, Sichuan University, Chengdu 610064, China
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Arabiyat AS, Pfau MR, Grunlan MA, Hahn MS. Intrinsic osteoinductivity of PCL-DA/PLLA semi-IPN shape memory polymer scaffolds. J Biomed Mater Res A 2021; 109:2334-2345. [PMID: 33988292 PMCID: PMC8736335 DOI: 10.1002/jbm.a.37216] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2021] [Revised: 04/22/2021] [Accepted: 05/01/2021] [Indexed: 02/06/2023]
Abstract
Engineering osteoinductive, self-fitting scaffolds offers a potential treatment modality to repair irregularly shaped craniomaxillofacial bone defects. Recently, we innovated on osteoinductive poly(ε-caprolactone)-diacrylate (PCL-DA) shape memory polymers (SMPs) to incorporate poly-L-lactic acid (PLLA) into the PCL-DA network, forming a semi-interpenetrating network (semi-IPN). Scaffolds formed from these PCL-DA/PLLA semi-IPNs display stiffnesses within the range of trabecular bone and accelerated degradation relative to scaffolds formed from slowly degrading PCL-DA SMPs. Herein, we demonstrate for the first time that PCL-DA/PLLA semi-IPN SMP scaffolds show increased intrinsic osteoinductivity relative to PCL-DA. We also confirm that application of a bioinspired polydopamine (PD) coating further improves the osteoinductive capacity of these PCL-DA/PLLA semi-IPN SMPs. In the absence of osteogenic supplements, protein level assessment of human mesenchymal stem cells (h-MSCs) cultured in PCL-DA/PLLA scaffolds revealed an increase in expression of osteogenic markers osterix, bone morphogenetic protein-4 (BMP-4), and collagen 1 alpha 1 (COL1A1), relative to PCL-DA scaffolds and osteogenic medium controls. Likewise, the expression of runt-related transcription factor 2 (RUNX2) and BMP-4 was elevated in the presence of PD-coating. In contrast, the chondrogenic and adipogenic responses associated with the scaffolds matched or were reduced relative to osteogenic medium controls, indicating that the scaffolds display intrinsic osteoinductivity.
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Affiliation(s)
- Ahmad S. Arabiyat
- Department of Biomedical Engineering, Rensselaer Polytechnic Institute (RPI), Troy, New York
- Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute (RPI), Troy, New York
| | - Michaela R. Pfau
- Department of Biomedical Engineering, Texas A&M University, College Station, Texas
| | - Melissa A. Grunlan
- Department of Biomedical Engineering, Texas A&M University, College Station, Texas
- Department of Materials Science and Engineering, Texas A&M University, College Station, Texas
- Department of Chemistry, Texas A&M University, College Station, Texas
| | - Mariah S. Hahn
- Department of Biomedical Engineering, Rensselaer Polytechnic Institute (RPI), Troy, New York
- Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute (RPI), Troy, New York
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Abstract
Face masks are a primary preventive measure against airborne pathogens. Thus, they have become one of the keys to controlling the spread of the COVID-19 virus. Common examples, including N95 masks, surgical masks, and face coverings, are passive devices that minimize the spread of suspended pathogens by inserting an aerosol-filtering barrier between the user's nasal and oral cavities and the environment. However, the filtering process does not adapt to changing pathogen levels or other environmental factors, which reduces its effectiveness in real-world scenarios. This paper addresses the limitations of passive masks by proposing ADAPT, a smart IoT-enabled "active mask". This wearable device contains a real-time closed-loop control system that senses airborne particles of different sizes near the mask by using an on-board particulate matter (PM) sensor. It then intelligently mitigates the threat by using mist spray, generated by a piezoelectric actuator, to load nearby aerosol particles such that they rapidly fall to the ground. The system is controlled by an on-board micro-controller unit that collects sensor data, analyzes it, and activates the mist generator as necessary. A custom smartphone application enables the user to remotely control the device and also receive real-time alerts related to recharging, refilling, and/or decontamination of the mask before reuse. Experimental results on a working prototype confirm that aerosol clouds rapidly fall to the ground when the mask is activated, thus significantly reducing PM counts near the user. Also, usage of the mask significantly increases local relative humidity levels.
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Affiliation(s)
- Rohan Reddy Kalavakonda
- Electrical and Computer Engineering Department, University of Florida, Gainesville, FL, 32611, USA
| | - Naren Vikram Raj Masna
- Electrical and Computer Engineering Department, University of Florida, Gainesville, FL, 32611, USA
| | - Soumyajit Mandal
- Electrical and Computer Engineering Department, University of Florida, Gainesville, FL, 32611, USA
| | - Swarup Bhunia
- Electrical and Computer Engineering Department, University of Florida, Gainesville, FL, 32611, USA.
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13
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Hao F, Wang L, Chen B, Qiu L, Nie J, Ma G. Bifunctional Smart Hydrogel Dressing with Strain Sensitivity and NIR-Responsive Performance. ACS Appl Mater Interfaces 2021; 13:46938-46950. [PMID: 34559507 DOI: 10.1021/acsami.1c15312] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Smart response hydrogel has a broad application prospect in human health real-time monitoring due to its responses to a variety of stimuli. In this study, we developed a novel smart hydrogel dressing based on conductive MXene nanosheets and a temperature-sensitive PNIPAm polymer. γ-Methacryloxypropyltrimethoxysilane (KH570) was selected to functionalize the surface of MXene further to improve the interface compatibility between MXene and PNIPAm. Our prepared K-M/PNIPAm hydrogel was found to have a strain-sensitive property, as well as a respond to NIR phase change and volume change. When applied as a strain flexible sensor, this K-M/PNIPAm hydrogel exhibited a high strain sensitivity with a gauge factor (GF) of 4.491, a broad working strain range of ≈250%, a fast response of ∼160 ms, and good cycle stability (i.e., 3000 s at 20% strain). Besides, this K-M/PNIPAm hydrogel can be used as an efficient NIR light-controlled drug release carrier to achieve on-demand drug release. This work paved the way for the application of smart response hydrogel in human health real-time monitoring and NIR-controlled drug release functions.
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Affiliation(s)
- Fan Hao
- Beijing Laboratory of Biomedical Materials, Beijing University of Chemical Technology, Beijing 100029, China
| | - Liangyu Wang
- Beijing Laboratory of Biomedical Materials, Beijing University of Chemical Technology, Beijing 100029, China
| | - Binling Chen
- Beijing Laboratory of Biomedical Materials, Beijing University of Chemical Technology, Beijing 100029, China
| | - Lin Qiu
- School of Pharmacy, Changzhou University, Changzhou 213164, Jiangsu, China
| | - Jun Nie
- Beijing Laboratory of Biomedical Materials, Beijing University of Chemical Technology, Beijing 100029, China
| | - Guiping Ma
- Beijing Laboratory of Biomedical Materials, Beijing University of Chemical Technology, Beijing 100029, China
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14
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Dai Z, Wang N, Yu Y, Lu Y, Jiang L, Zhang DA, Wang X, Yan X, Long YZ. One-Step Preparation of a Core-Spun Cu/P(VDF-TrFE) Nanofibrous Yarn for Wearable Smart Textile to Monitor Human Movement. ACS Appl Mater Interfaces 2021; 13:44234-44242. [PMID: 34505786 DOI: 10.1021/acsami.1c10366] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
At present, wearable electronic sensors are widely investigated and applied for human life usage especially for the flexible piezoelectric sensor based on piezoelectric fibers. However, most of these fiber-based piezoelectric sensors are thin films, which might had poor air permeability, or do not adapt to complex body movements. In this study, a piezoelectric sensing fabric was proposed based on core-spun Cu/P(VDF-TrFE) nanofibrous yarns. These yarns were fabricated by P(VDF-TrFE) as a piezoelectric material and Cu wire as an inner electrode layer through a one-step conjugate electrospinning process. The Cu/P(VDF-TrFE) fabrics showed good flexibility, breathability, mechanical stability, and sensing capability after continuous running for 60 min or after washing. A 4 cm × 4 cm fabric could generate a current of 38 nA and voltage of 2.7 V under 15 N pressure. Once the fabric was fixed onto the clothes, human motion could be monitored by collecting its generated current, and the signal could be wirelessly transmitted onto a smartphone. Therefore, this study may provide a simple and promising approach to design a smart textile for human motion monitoring.
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Affiliation(s)
- Zhang Dai
- Industrial Research Institute of Nonwovens & Technical Textiles, College of Textiles & Clothing, Shandong Center for Engineered Nonwovens, Qingdao University, Qingdao 266071, China
| | - Ning Wang
- Collaborative Innovation Center for Nanomaterials & Optoelectronic Devices, College of Physics, Qingdao University, Qingdao 266071, China
| | - Yang Yu
- Collaborative Innovation Center for Nanomaterials & Optoelectronic Devices, College of Physics, Qingdao University, Qingdao 266071, China
| | - Ye Lu
- Collaborative Innovation Center for Nanomaterials & Optoelectronic Devices, College of Physics, Qingdao University, Qingdao 266071, China
| | - Longlong Jiang
- Collaborative Innovation Center for Nanomaterials & Optoelectronic Devices, College of Physics, Qingdao University, Qingdao 266071, China
| | - Di-An Zhang
- Industrial Research Institute of Nonwovens & Technical Textiles, College of Textiles & Clothing, Shandong Center for Engineered Nonwovens, Qingdao University, Qingdao 266071, China
| | - Xiaoxiong Wang
- Collaborative Innovation Center for Nanomaterials & Optoelectronic Devices, College of Physics, Qingdao University, Qingdao 266071, China
| | - Xu Yan
- Industrial Research Institute of Nonwovens & Technical Textiles, College of Textiles & Clothing, Shandong Center for Engineered Nonwovens, Qingdao University, Qingdao 266071, China
- Collaborative Innovation Center for Eco-Textiles of Shandong Province, Qingdao University, Qingdao 266071, China
- State Key Laboratory of Bio-Fibers and Eco-Textiles, Qingdao University, Qingdao 266071, China
| | - Yun-Ze Long
- Collaborative Innovation Center for Nanomaterials & Optoelectronic Devices, College of Physics, Qingdao University, Qingdao 266071, China
- Collaborative Innovation Center for Eco-Textiles of Shandong Province, Qingdao University, Qingdao 266071, China
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15
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López-Lugo JD, Pimentel-Domínguez R, Benítez-Martínez JA, Hernández-Cordero J, Vélez-Cordero JR, Sánchez-Arévalo FM. Photomechanical Polymer Nanocomposites for Drug Delivery Devices. Molecules 2021; 26:molecules26175376. [PMID: 34500809 PMCID: PMC8433747 DOI: 10.3390/molecules26175376] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2021] [Revised: 08/30/2021] [Accepted: 08/31/2021] [Indexed: 11/16/2022] Open
Abstract
We demonstrate a novel structure based on smart carbon nanocomposites intended for fabricating laser-triggered drug delivery devices (DDDs). The performance of the devices relies on nanocomposites' photothermal effects that are based on polydimethylsiloxane (PDMS) with carbon nanoparticles (CNPs). Upon evaluating the main features of the nanocomposites through physicochemical and photomechanical characterizations, we identified the main photomechanical features to be considered for selecting a nanocomposite for the DDDs. The capabilities of the PDMS/CNPs prototypes for drug delivery were tested using rhodamine-B (Rh-B) as a marker solution, allowing for visualizing and quantifying the release of the marker contained within the device. Our results showed that the DDDs readily expel the Rh-B from the reservoir upon laser irradiation and the amount of released Rh-B depends on the exposure time. Additionally, we identified two main Rh-B release mechanisms, the first one is based on the device elastic deformation and the second one is based on bubble generation and its expansion into the device. Both mechanisms were further elucidated through numerical simulations and compared with the experimental results. These promising results demonstrate that an inexpensive nanocomposite such as PDMS/CNPs can serve as a foundation for novel DDDs with spatial and temporal release control through laser irradiation.
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Affiliation(s)
- Jonathan David López-Lugo
- Instituto de Investigaciones en Materiales, Universidad Nacional Autónoma de México, Apdo. Postal 70-360, Cd. Universitaria, México 04510, Mexico; (J.D.L.-L.); (R.P.-D.); (J.A.B.-M.); (J.H.-C.)
| | - Reinher Pimentel-Domínguez
- Instituto de Investigaciones en Materiales, Universidad Nacional Autónoma de México, Apdo. Postal 70-360, Cd. Universitaria, México 04510, Mexico; (J.D.L.-L.); (R.P.-D.); (J.A.B.-M.); (J.H.-C.)
| | - Jorge Alejandro Benítez-Martínez
- Instituto de Investigaciones en Materiales, Universidad Nacional Autónoma de México, Apdo. Postal 70-360, Cd. Universitaria, México 04510, Mexico; (J.D.L.-L.); (R.P.-D.); (J.A.B.-M.); (J.H.-C.)
| | - Juan Hernández-Cordero
- Instituto de Investigaciones en Materiales, Universidad Nacional Autónoma de México, Apdo. Postal 70-360, Cd. Universitaria, México 04510, Mexico; (J.D.L.-L.); (R.P.-D.); (J.A.B.-M.); (J.H.-C.)
| | - Juan Rodrigo Vélez-Cordero
- Cátedras CONACyT-Instituto de Física, Universidad Autónoma de San Luis Potosí, San Luis Potosí 78290, Mexico;
| | - Francisco Manuel Sánchez-Arévalo
- Instituto de Investigaciones en Materiales, Universidad Nacional Autónoma de México, Apdo. Postal 70-360, Cd. Universitaria, México 04510, Mexico; (J.D.L.-L.); (R.P.-D.); (J.A.B.-M.); (J.H.-C.)
- Correspondence:
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16
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Gambaro FM, Ummarino A, Torres Andón F, Ronzoni F, Di Matteo B, Kon E. Drug Delivery Systems for the Treatment of Knee Osteoarthritis: A Systematic Review of In Vivo Studies. Int J Mol Sci 2021; 22:ijms22179137. [PMID: 34502046 PMCID: PMC8431358 DOI: 10.3390/ijms22179137] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2021] [Revised: 08/21/2021] [Accepted: 08/22/2021] [Indexed: 12/12/2022] Open
Abstract
Many efforts have been made in the field of nanotechnology to improve the local and sustained release of drugs, which may be helpful to overcome the present limitations in the treatment of knee OA. Nano-/microparticles and/or hydrogels can be now engineered to improve the administration and intra-articular delivery of specific drugs, targeting molecular pathways and pathogenic mechanisms involved in OA progression and remission. In order to summarize the current state of this field, a systematic review of the literature was performed and 45 relevant studies were identified involving both animal models and humans. We found that polymeric nanoparticles loaded with anti-inflammatory drugs (i.e., dexamethasone or celecoxib) are the most frequently investigated drug delivery systems, followed by microparticles and hydrogels. In particular, the nanosystem most frequently used in preclinical research consists of PLGA-nanoparticles loaded with corticosteroids and non-steroidal anti-inflammatory drugs. Overall, improvement in histological features, reduction in joint inflammation, and improvement in clinical scores in patients were observed. The last advances in the field of nanotechnology could offer new opportunities to treat patients affected by knee OA, including those with previous meniscectomy. New smart drug delivery approaches, based on nanoparticles, microparticles, and hydrogels, may enhance the therapeutic potential of intra-articular agents by increasing the permanence of selected drugs inside the joint and better targeting specific receptors and tissues.
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Affiliation(s)
- Francesco Manlio Gambaro
- Department of Biomedical Sciences, Humanitas University Pieve Emanuele, 20090 Milan, Italy; (A.U.); (F.T.A.); (F.R.); (E.K.)
- IRCCS Humanitas Research Hospital, Rozzano, 20089 Milan, Italy;
- Correspondence:
| | - Aldo Ummarino
- Department of Biomedical Sciences, Humanitas University Pieve Emanuele, 20090 Milan, Italy; (A.U.); (F.T.A.); (F.R.); (E.K.)
- IRCCS Humanitas Research Hospital, Rozzano, 20089 Milan, Italy;
| | - Fernando Torres Andón
- Department of Biomedical Sciences, Humanitas University Pieve Emanuele, 20090 Milan, Italy; (A.U.); (F.T.A.); (F.R.); (E.K.)
- Center for Research in Molecular Medicine & Chronic Diseases (CIMUS), Universidade de Santiago de Compostela, 15705 Santiago de Compostela, Spain
| | - Flavio Ronzoni
- Department of Biomedical Sciences, Humanitas University Pieve Emanuele, 20090 Milan, Italy; (A.U.); (F.T.A.); (F.R.); (E.K.)
- Human Anatomy Unit, Department of Public Health, Experimental and Forensic Medicine, University of Pavia, 27100 Pavia, Italy
| | - Berardo Di Matteo
- IRCCS Humanitas Research Hospital, Rozzano, 20089 Milan, Italy;
- Department of Traumatology, Orthopaedics and Disaster Surgery, First Moscow State Medical University (Sechenov University), 119991 Moscow, Russia
| | - Elizaveta Kon
- Department of Biomedical Sciences, Humanitas University Pieve Emanuele, 20090 Milan, Italy; (A.U.); (F.T.A.); (F.R.); (E.K.)
- IRCCS Humanitas Research Hospital, Rozzano, 20089 Milan, Italy;
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17
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Voronin DV, Abalymov AA, Svenskaya YI, Lomova MV. Key Points in Remote-Controlled Drug Delivery: From the Carrier Design to Clinical Trials. Int J Mol Sci 2021; 22:9149. [PMID: 34502059 PMCID: PMC8430748 DOI: 10.3390/ijms22179149] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2021] [Revised: 08/12/2021] [Accepted: 08/23/2021] [Indexed: 12/12/2022] Open
Abstract
The increased research activity aiming at improved delivery of pharmaceutical molecules indicates the expansion of the field. An efficient therapeutic delivery approach is based on the optimal choice of drug-carrying vehicle, successful targeting, and payload release enabling the site-specific accumulation of the therapeutic molecules. However, designing the formulation endowed with the targeting properties in vitro does not guarantee its selective delivery in vivo. The various biological barriers that the carrier encounters upon intravascular administration should be adequately addressed in its overall design to reduce the off-target effects and unwanted toxicity in vivo and thereby enhance the therapeutic efficacy of the payload. Here, we discuss the main parameters of remote-controlled drug delivery systems: (i) key principles of the carrier selection; (ii) the most significant physiological barriers and limitations associated with the drug delivery; (iii) major concepts for its targeting and cargo release stimulation by external stimuli in vivo. The clinical translation for drug delivery systems is also described along with the main challenges, key parameters, and examples of successfully translated drug delivery platforms. The essential steps on the way from drug delivery system design to clinical trials are summarized, arranged, and discussed.
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Affiliation(s)
- Denis V. Voronin
- Science Medical Center, Saratov State University, Astrakhanskaya St. 83, 410012 Saratov, Russia; (A.A.A.); (Y.I.S.); (M.V.L.)
- Department of Physical and Colloid Chemistry, National University of Oil and Gas “Gubkin University”, Leninsky Prospekt 65, 119991 Moscow, Russia
| | - Anatolii A. Abalymov
- Science Medical Center, Saratov State University, Astrakhanskaya St. 83, 410012 Saratov, Russia; (A.A.A.); (Y.I.S.); (M.V.L.)
| | - Yulia I. Svenskaya
- Science Medical Center, Saratov State University, Astrakhanskaya St. 83, 410012 Saratov, Russia; (A.A.A.); (Y.I.S.); (M.V.L.)
| | - Maria V. Lomova
- Science Medical Center, Saratov State University, Astrakhanskaya St. 83, 410012 Saratov, Russia; (A.A.A.); (Y.I.S.); (M.V.L.)
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18
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Li J, Xiao C, Wei W, Xiao R, Yao H, Liu H. Constructing a Facile Biocomputing Platform Based on Smart Supramolecular Hydrogel Film Electrodes with Immobilized Enzymes and Gold Nanoclusters. ACS Appl Mater Interfaces 2021; 13:36632-36643. [PMID: 34288670 DOI: 10.1021/acsami.1c11206] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Herein, fluorescent gold nanoclusters (AuNCs) and horseradish peroxidase (HRP) were simultaneously embedded into self-assembled dipeptide supramolecular films of N-fluorenylmethoxycarbonyl diphenylalanine (Fmoc-FF) on the surface of ITO electrodes (Fmoc-FF/AuNCs/HRP) by using a simple single-step process. In the films, both the fluorescence property of AuNCs and the bioelectrocatalytic property of HRP were well maintained and could be reversibly regulated by pH-sensitive structural changes in the Fmoc-FF hydrogel films. Cu(II)/EDTA in the solution could lead to the aggregation/disaggregation of AuNCs and further quenching/dequenching the fluorescence signal from the films. Meanwhile, the blue complexes formed by Cu(II) and EDTA could produce a UV-vis signal in the solution. In addition, the coordinated Cu(II) in the films enhanced the electrocatalytic capacity toward the reduction of H2O2 and could switch the current signal. A biomolecular logic circuit was built based on the smart film electrode system by using pH, the concentrations of EDTA, Cu(II) and H2O2 as inputs, while the fluorescence intensity (FL), current (I) and UV-vis extinction (E) of the solution as outputs. Various logic devices were fabricated using the uniform platform, consisting of an encoder/decoder, demultiplexer, dual-transfer gate, keypad lock, digital comparator, half adder, and controlled NOT (CNOT) gate. Specifically, an electronic three-value logic gate, gullibility (ANY) gate, was first mimicked in this biocomputing system. This work not only demonstrated the construction of a new type of multivalued logic gate by using a dipeptide micromolecular matrix but also provided a new approach for designing sophisticated biologic functions, establishing smart multianalyte biosensing or fabricating biology information processing through the use of a simple film system.
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Affiliation(s)
- Jiaxuan Li
- Key Laboratory of Radiopharmaceuticals, Ministry of Education, College of Chemistry, Beijing Normal University, Beijing 100875, People's Republic of China
| | - Cong Xiao
- Key Laboratory of Radiopharmaceuticals, Ministry of Education, College of Chemistry, Beijing Normal University, Beijing 100875, People's Republic of China
| | - Wenting Wei
- Key Laboratory of Radiopharmaceuticals, Ministry of Education, College of Chemistry, Beijing Normal University, Beijing 100875, People's Republic of China
| | - Ruiqi Xiao
- Key Laboratory of Radiopharmaceuticals, Ministry of Education, College of Chemistry, Beijing Normal University, Beijing 100875, People's Republic of China
| | - Huiqin Yao
- School of Basic Medicine, Ningxia Medical University, Yinchuan 750004, People's Republic of China
| | - Hongyun Liu
- Key Laboratory of Radiopharmaceuticals, Ministry of Education, College of Chemistry, Beijing Normal University, Beijing 100875, People's Republic of China
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19
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Ko J, Kang HJ, Ahn J, Zhao ZJ, Jeong Y, Hwang SH, Bok M, Jeon S, Gu J, Ha JH, Rho J, Jeong JH, Park I. Biocompatible Nanotransfer Printing Based on Water Bridge Formation in Hyaluronic Acid and Its Application to Smart Contact Lenses. ACS Appl Mater Interfaces 2021; 13:35069-35078. [PMID: 34282875 DOI: 10.1021/acsami.1c06225] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Many conventional micropatterning and nanopatterning techniques employ toxic chemicals, rendering them nonbiocompatible and unsuited for biodevice production. Herein the formation of water bridges on the surface of hyaluronic acid (HA) films is exploited to develop a transfer-based nanopatterning method applicable to diverse structures and materials. The HA film surface, made deformable via water bridge generation, is brought into contact with a functional material and subjected to thermal treatment, which results in film shrinkage, allowing a robust pattern transfer. The proposed biocompatible method, which avoids the use of extra chemicals, enables the transfer of nanoscale, microscale, and thin-film structures as well as functional materials such as metals and metal oxides. A nanopatterned HA film is transferred onto a moisture-containing contact lens to fabricate smart contact lenses with unique optical characteristics of rationally designed optical nanopatterns. These lenses demonstrated binocular parallax-induced stereoscopy via nanoline array polarization and acted as cutoff filters, with nanodot arrays, capable of treating Irlen syndrome.
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Affiliation(s)
- Jiwoo Ko
- Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon, 34141, South Korea
- Department of Nano Manufacturing Technology, Korea Institute of Machinery and Materials (KIMM), 156 Gajeongbuk-Ro, Yuseong-gu, Daejeon, 34103, South Korea
| | - Hyeok Joong Kang
- Department of Nano Manufacturing Technology, Korea Institute of Machinery and Materials (KIMM), 156 Gajeongbuk-Ro, Yuseong-gu, Daejeon, 34103, South Korea
| | - Junseong Ahn
- Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon, 34141, South Korea
- Department of Nano Manufacturing Technology, Korea Institute of Machinery and Materials (KIMM), 156 Gajeongbuk-Ro, Yuseong-gu, Daejeon, 34103, South Korea
| | - Zhi-Jun Zhao
- Department of Nano Manufacturing Technology, Korea Institute of Machinery and Materials (KIMM), 156 Gajeongbuk-Ro, Yuseong-gu, Daejeon, 34103, South Korea
| | - Yongrok Jeong
- Department of Nano Manufacturing Technology, Korea Institute of Machinery and Materials (KIMM), 156 Gajeongbuk-Ro, Yuseong-gu, Daejeon, 34103, South Korea
| | - Soon Hyoung Hwang
- Department of Nano Manufacturing Technology, Korea Institute of Machinery and Materials (KIMM), 156 Gajeongbuk-Ro, Yuseong-gu, Daejeon, 34103, South Korea
| | - Moonjeong Bok
- Department of Nano Manufacturing Technology, Korea Institute of Machinery and Materials (KIMM), 156 Gajeongbuk-Ro, Yuseong-gu, Daejeon, 34103, South Korea
| | - Sohee Jeon
- Department of Nano Manufacturing Technology, Korea Institute of Machinery and Materials (KIMM), 156 Gajeongbuk-Ro, Yuseong-gu, Daejeon, 34103, South Korea
| | - Jimin Gu
- Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon, 34141, South Korea
| | - Ji-Hwan Ha
- Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon, 34141, South Korea
- Department of Nano Manufacturing Technology, Korea Institute of Machinery and Materials (KIMM), 156 Gajeongbuk-Ro, Yuseong-gu, Daejeon, 34103, South Korea
| | - Junsuk Rho
- Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH), 77 Cheongam-ro, Nam-gu, Pohang-si, Gyeongsangbuk-do 37673, South Korea
- Department of Mechanical Engineering, Pohang University of Science and Technology (POSTECH), 77 Cheongam-ro, Nam-gu, Pohang-si, Gyeongsangbuk-do 37673, South Korea
| | - Jun-Ho Jeong
- Department of Nano Manufacturing Technology, Korea Institute of Machinery and Materials (KIMM), 156 Gajeongbuk-Ro, Yuseong-gu, Daejeon, 34103, South Korea
| | - Inkyu Park
- Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon, 34141, South Korea
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20
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Abstract
Electronic tattoos as an emerging epidermal electronic are alluring in the field of wearable electronics for their lightweight and noninvasive properties. However, the combination of flexibility, skin biocompatibility, adhesion, repairability, and erasability remains a challenge for fabricating electronic tattoos. Hence, a dynamic ionic liquid is prepared which is ideally suited for making an electronic tattoo with these challenging features at the same time. Such an intrinsically flexible electronic tattoo can be firmly attached to human skin with negligible irritation. More importantly, the existence of dynamic covalent chemistry provides the electronic tattoo with healing and erasable abilities under mild redox conditions. Owing to the high ionic conductivity of ionic liquids, the electronic tattoo exhibits excellent sensing performance in response to the temperature variation and tensile strain, which can intelligently monitor body temperature, pulse, and movement. As an extension of the application, a specially designed quadrilateral electronic tattoo can sense and distinguish multiple signals simultaneously. This concept of electronic tattoo based on the dynamic ionic liquid shows great potentials in the applications of intelligent wearable electronics.
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Affiliation(s)
- Zhiwu Chen
- Department of Chemistry, Renmin University of China, Beijing 100872, China
| | - Naiwei Gao
- Department of Chemistry, Renmin University of China, Beijing 100872, China
| | - Yanji Chu
- Department of Chemistry, Renmin University of China, Beijing 100872, China
| | - Yonglin He
- Department of Chemistry, Renmin University of China, Beijing 100872, China
| | - Yapei Wang
- Department of Chemistry, Renmin University of China, Beijing 100872, China
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21
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Ma L, Wang J, He J, Yao Y, Zhu X, Peng L, Yang J, Liu X, Qu M. Biotemplated Fabrication of a Multifunctional Superwettable Shape Memory Film for Wearable Sensing Electronics and Smart Liquid Droplet Manipulation. ACS Appl Mater Interfaces 2021; 13:31285-31297. [PMID: 34170664 DOI: 10.1021/acsami.1c08319] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Wearable superwettable surfaces with dynamic tunable wettability and self-healability are promising for advanced wearable electronics, whereas have been rarely reported. Herein, a flexible superhydrophobic shape memory film (SSMF) with switchable surface wettability and high strain sensitivity has been conveniently fabricated. The surface topography of the SSMF can be finely adjusted by a reversible stretching (bending)/recovery way, which makes it feasible to control the surface-switchable adhesive superhydrophobicity by simple body movements, demonstrating great advantages in selective droplet manipulation and smart control of droplet movement. Moreover, benefitting from the hierarchical micro/nanostructures and outstanding sensing performance, the flexible SSMFs with good adaptivity and durability can serve as smart wearable sensors attached to human skin to achieve full-range and real-time detection of human motions and intelligent control of Internet of Things. More interestingly, the unique dynamic dewetting property enables the sensors to work in a humid environment or rainy days. Overall, this work successfully integrates dynamic tunable superwettability into design of intelligent wearable electronics with multifunctions. The obtained SSMF-based wearable surface with dynamic dewetting properties reveals great potential in versatile application fields such as liquid-repellent electronics, wearable droplet manipulators, and all-weather intelligent actuators.
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Affiliation(s)
- Lili Ma
- College of Chemistry and Chemical Engineering, Xi'an University of Science and Technology, Xi'an 710054, China
| | - Jiaxin Wang
- College of Chemistry and Chemical Engineering, Xi'an University of Science and Technology, Xi'an 710054, China
| | - Jinmei He
- College of Chemistry and Chemical Engineering, Xi'an University of Science and Technology, Xi'an 710054, China
| | - Yali Yao
- College of Chemistry and Chemical Engineering, Xi'an University of Science and Technology, Xi'an 710054, China
| | - Xuedan Zhu
- College of Chemistry and Chemical Engineering, Xi'an University of Science and Technology, Xi'an 710054, China
| | - Lei Peng
- College of Chemistry and Chemical Engineering, Xi'an University of Science and Technology, Xi'an 710054, China
| | - Jie Yang
- College of Safety Science and Engineering, Xi'an University of Science and Technology, Xi'an 710054, China
| | - Xiangrong Liu
- College of Chemistry and Chemical Engineering, Xi'an University of Science and Technology, Xi'an 710054, China
| | - Mengnan Qu
- College of Chemistry and Chemical Engineering, Xi'an University of Science and Technology, Xi'an 710054, China
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22
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Abstract
Smart scaffolds based on shape memory polymer (SMPs) have been increasingly studied in tissue engineering. The unique shape actuating ability of SMP scaffolds has been utilized to improve delivery and/or tissue defect filling. In this regard, these scaffolds may be self-deploying, self-expanding, or self-fitting. Smart scaffolds are generally thermoresponsive or hydroresponsive wherein shape recovery is driven by an increase in temperature or by hydration, respectively. Most smart scaffolds have been directed towards regenerating bone, cartilage, and cardiovascular tissues. A vast variety of smart scaffolds can be prepared with properties targeted for a specific tissue application. This breadth of smart scaffolds stems from the variety of compositions employed as well as the numerous methods used to fabricated scaffolds with the desired morphology. Smart scaffold compositions span across several distinct classes of SMPs, affording further tunability of properties using numerous approaches. Specifically, these SMPs include those based on physically cross-linked and chemically cross-linked networks and include widely studied shape memory polyurethanes (SMPUs). Various additives, ranging from nanoparticles to biologicals, have also been included to impart unique functionality to smart scaffolds. Thus, given their unique functionality and breadth of tunable properties, smart scaffolds have tremendous potential in tissue engineering.
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Affiliation(s)
- Michaela R Pfau
- Department of Biomedical Engineering, Texas A&M University, College Station, TX 77843, USA.
| | - Melissa A Grunlan
- Department of Biomedical Engineering, Texas A&M University, College Station, TX 77843, USA. and Department of Materials Science and Engineering, Texas A&M University, College Station, TX 77843, USA and Department of Chemistry, Texas A&M University, College Station, TX 77843, USA
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23
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Neffe AT, Löwenberg C, Julich-Gruner KK, Behl M, Lendlein A. Thermally-Induced Shape-Memory Behavior of Degradable Gelatin-Based Networks. Int J Mol Sci 2021; 22:5892. [PMID: 34072689 PMCID: PMC8197998 DOI: 10.3390/ijms22115892] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2021] [Revised: 05/25/2021] [Accepted: 05/25/2021] [Indexed: 11/16/2022] Open
Abstract
Shape-memory hydrogels (SMH) are multifunctional, actively-moving polymers of interest in biomedicine. In loosely crosslinked polymer networks, gelatin chains may form triple helices, which can act as temporary net points in SMH, depending on the presence of salts. Here, we show programming and initiation of the shape-memory effect of such networks based on a thermomechanical process compatible with the physiological environment. The SMH were synthesized by reaction of glycidylmethacrylated gelatin with oligo(ethylene glycol) (OEG) α,ω-dithiols of varying crosslinker length and amount. Triple helicalization of gelatin chains is shown directly by wide-angle X-ray scattering and indirectly via the mechanical behavior at different temperatures. The ability to form triple helices increased with the molar mass of the crosslinker. Hydrogels had storage moduli of 0.27-23 kPa and Young's moduli of 215-360 kPa at 4 °C. The hydrogels were hydrolytically degradable, with full degradation to water-soluble products within one week at 37 °C and pH = 7.4. A thermally-induced shape-memory effect is demonstrated in bending as well as in compression tests, in which shape recovery with excellent shape-recovery rates Rr close to 100% were observed. In the future, the material presented here could be applied, e.g., as self-anchoring devices mechanically resembling the extracellular matrix.
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Affiliation(s)
- Axel T. Neffe
- Institute of Active Polymers and Berlin-Brandenburg Center of Regenerative Therapies, Helm-holtz-Zentrum Hereon, 14513 Teltow, Germany; (A.T.N.); (C.L.); (K.K.J.-G.); (M.B.)
| | - Candy Löwenberg
- Institute of Active Polymers and Berlin-Brandenburg Center of Regenerative Therapies, Helm-holtz-Zentrum Hereon, 14513 Teltow, Germany; (A.T.N.); (C.L.); (K.K.J.-G.); (M.B.)
| | - Konstanze K. Julich-Gruner
- Institute of Active Polymers and Berlin-Brandenburg Center of Regenerative Therapies, Helm-holtz-Zentrum Hereon, 14513 Teltow, Germany; (A.T.N.); (C.L.); (K.K.J.-G.); (M.B.)
| | - Marc Behl
- Institute of Active Polymers and Berlin-Brandenburg Center of Regenerative Therapies, Helm-holtz-Zentrum Hereon, 14513 Teltow, Germany; (A.T.N.); (C.L.); (K.K.J.-G.); (M.B.)
| | - Andreas Lendlein
- Institute of Active Polymers and Berlin-Brandenburg Center of Regenerative Therapies, Helm-holtz-Zentrum Hereon, 14513 Teltow, Germany; (A.T.N.); (C.L.); (K.K.J.-G.); (M.B.)
- Institute of Chemistry, University of Potsdam, 14476 Potsdam, Germany
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24
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Tu Z, Liu W, Wang J, Qiu X, Huang J, Li J, Lou H. Biomimetic high performance artificial muscle built on sacrificial coordination network and mechanical training process. Nat Commun 2021; 12:2916. [PMID: 34006839 PMCID: PMC8131361 DOI: 10.1038/s41467-021-23204-x] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2020] [Accepted: 03/29/2021] [Indexed: 11/13/2022] Open
Abstract
Artificial muscle materials promise incredible applications in actuators, robotics and medical apparatus, yet the ability to mimic the full characteristics of skeletal muscles into synthetic materials remains a huge challenge. Herein, inspired by the dynamic sacrificial bonds in biomaterials and the self-strengthening of skeletal muscles by physical exercise, high performance artificial muscle material is prepared by rearrangement of sacrificial coordination bonds in the polyolefin elastomer via a repetitive mechanical training process. Biomass lignin is incorporated as a green reinforcer for the construction of interfacial coordination bonds. The prepared artificial muscle material exhibits high actuation strain (>40%), high actuation stress (1.5 MPa) which can lift more than 10,000 times its own weight with 30% strain, characteristics of excellent self-strengthening by mechanical training, strain-adaptive stiffening, and heat/electric programmable actuation performance. In this work, we show a facile strategy for the fabrication of intelligent materials using easily available raw materials.
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Affiliation(s)
- Zhikai Tu
- School of Chemistry and Chemical Engineering, Guangdong Engineering Research Center for Green Fine Chemicals, South China University of Technology, Guangzhou, P. R. China
| | - Weifeng Liu
- School of Chemistry and Chemical Engineering, Guangdong Engineering Research Center for Green Fine Chemicals, South China University of Technology, Guangzhou, P. R. China.
| | - Jin Wang
- The National Engineering Research Center of Novel Equipment for Polymer Processing, School of Mechanical & Automotive Engineering, South China University of Technology, Guangzhou, P. R. China
| | - Xueqing Qiu
- School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou, P. R. China.
| | - Jinhao Huang
- School of Chemistry and Chemical Engineering, Guangdong Engineering Research Center for Green Fine Chemicals, South China University of Technology, Guangzhou, P. R. China
| | - Jinxing Li
- School of Chemistry and Chemical Engineering, Guangdong Engineering Research Center for Green Fine Chemicals, South China University of Technology, Guangzhou, P. R. China
| | - Hongming Lou
- School of Chemistry and Chemical Engineering, Guangdong Engineering Research Center for Green Fine Chemicals, South China University of Technology, Guangzhou, P. R. China
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25
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Haniffa MACM, Munawar K, Chee CY, Pramanik S, Halilu A, Illias HA, Rizwan M, Senthilnithy R, Mahanama KRR, Tripathy A, Azman MF. Cellulose supported magnetic nanohybrids: Synthesis, physicomagnetic properties and biomedical applications-A review. Carbohydr Polym 2021; 267:118136. [PMID: 34119125 DOI: 10.1016/j.carbpol.2021.118136] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Revised: 04/24/2021] [Accepted: 04/27/2021] [Indexed: 12/27/2022]
Abstract
Cellulose and its forms are widely used in biomedical applications due to their biocompatibility, biodegradability and lack of cytotoxicity. It provides ample opportunities for the functionalization of supported magnetic nanohybrids (CSMNs). Because of the abundance of surface hydroxyl groups, they are surface tunable in either homogeneous or heterogeneous solvents and thus act as a substrate or template for the CSMNs' development. The present review emphasizes on the synthesis of various CSMNs, their physicomagnetic properties, and potential applications such as stimuli-responsive drug delivery systems, MRI, enzyme encapsulation, nucleic acid extraction, wound healing and tissue engineering. The impact of CSMNs on cytotoxicity, magnetic hyperthermia, and folate-conjugates is highlighted in particular, based on their structures, cell viability, and stability. Finally, the review also discussed the challenges and prospects of CSMNs' development. This review is expected to provide CSMNs' development roadmap in the context of 21st-century demands for biomedical therapeutics.
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Affiliation(s)
| | - Khadija Munawar
- Centre of Advanced Manufacturing and Material Processing, Faculty of Engineering, University of Malaya, 50603 Kuala Lumpur, Malaysia.
| | - Ching Yern Chee
- Centre of Advanced Manufacturing and Material Processing, Faculty of Engineering, University of Malaya, 50603 Kuala Lumpur, Malaysia; Department of Chemical Engineering, Faculty of Engineering, University of Malaya, 50603 Kuala Lumpur, Malaysia.
| | - Sumit Pramanik
- Functional and Biomaterials Engineering Lab, Department of Mechanical Engineering, Faculty of Engineering and Technology, SRM Institute of Science and Technology, Kattankulathur, Kancheepuram, 603203, Chennai, Tamil Nadu, India.
| | - Ahmed Halilu
- Department of Chemical Engineering, Faculty of Engineering, University of Malaya, 50603 Kuala Lumpur, Malaysia
| | - Hazlee Azil Illias
- Centre of Advanced Manufacturing and Material Processing, Faculty of Engineering, University of Malaya, 50603 Kuala Lumpur, Malaysia; Department of Electrical Engineering, Faculty of Engineering, University of Malaya, 50603 Kuala Lumpur, Malaysia.
| | - Muhammad Rizwan
- Department of Chemistry, The University of Lahore, Lahore, Pakistan
| | - Rajendram Senthilnithy
- Department of Chemistry, Faculty of Natural Sciences, The Open University of Sri Lanka, 10250 Nawala, Nugegoda, Sri Lanka
| | | | - Ashis Tripathy
- Center for MicroElectroMechanics Systems (CMEMS), University of Minho, Campus de Azurém, 4800-058 Guimarães, Portugal
| | - Mohd Fahmi Azman
- Physics Division, Centre for foundation studies, University of Malaya, 50603 Kuala Lumpur, Malaysia
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26
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Liu X, Ren Z, Liu F, Zhao L, Ling Q, Gu H. Multifunctional Self-Healing Dual Network Hydrogels Constructed via Host-Guest Interaction and Dynamic Covalent Bond as Wearable Strain Sensors for Monitoring Human and Organ Motions. ACS Appl Mater Interfaces 2021; 13:14612-14622. [PMID: 33723988 DOI: 10.1021/acsami.1c03213] [Citation(s) in RCA: 63] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Hydrogel-based flexible strain sensors have shown great potential in body movement tracking, early disease diagnosis, noninvasive treatment, electronic skins, and soft robotics. The good self-healing, biocompatible, sensitive and stretchable properties are the focus of hydrogel-based flexible strain sensors. Dual network (DN) hydrogels are hopeful to fabricate self-healing hydrogels with the above properties. Here, multifunctional DN hydrogels are prepared via a combination of host-guest interaction of β-cyclodextrin and ferrocene with dynamic borate ester bonds of poly(vinyl alcohol) and borax. Carbon nanotubes are used to endow the DN hydrogels with good conductivity. The obtained DN composite hydrogels possess good biocompatibility, stretchability (436%), fracture strength (41.0 KPa), self-healing property (healing efficiency of 95%), and high tensile strain sensitivity (gauge factor of 5.9). The DN composite hydrogels are used as flexible strain sensors to detect different human motions. After cutting, the healed hydrogels also can monitor human motions and have good stability. In addition, the hydrogel sensors may track the respiratory movement of a pig lung in vitro. This work exhibits new ideas and approaches to develop multifunctional self-healing hydrogels for constructing flexible strain sensors.
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Affiliation(s)
- Xiong Liu
- Key Laboratory of Leather Chemistry and Engineering of Ministry of Education, Sichuan University, Chengdu 610065, China
- National Engineering Research Center of Clean Technology in Leather Industry, Sichuan University, Chengdu 610065, China
| | - Zhijun Ren
- Key Laboratory of Leather Chemistry and Engineering of Ministry of Education, Sichuan University, Chengdu 610065, China
- National Engineering Research Center of Clean Technology in Leather Industry, Sichuan University, Chengdu 610065, China
| | - Fangfei Liu
- Key Laboratory of Leather Chemistry and Engineering of Ministry of Education, Sichuan University, Chengdu 610065, China
- National Engineering Research Center of Clean Technology in Leather Industry, Sichuan University, Chengdu 610065, China
| | - Li Zhao
- Key Laboratory of Leather Chemistry and Engineering of Ministry of Education, Sichuan University, Chengdu 610065, China
- National Engineering Research Center of Clean Technology in Leather Industry, Sichuan University, Chengdu 610065, China
| | - Qiangjun Ling
- Key Laboratory of Leather Chemistry and Engineering of Ministry of Education, Sichuan University, Chengdu 610065, China
- National Engineering Research Center of Clean Technology in Leather Industry, Sichuan University, Chengdu 610065, China
| | - Haibin Gu
- Key Laboratory of Leather Chemistry and Engineering of Ministry of Education, Sichuan University, Chengdu 610065, China
- National Engineering Research Center of Clean Technology in Leather Industry, Sichuan University, Chengdu 610065, China
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27
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Constante G, Apsite I, Alkhamis H, Dulle M, Schwarzer M, Caspari A, Synytska A, Salehi S, Ionov L. 4D Biofabrication Using a Combination of 3D Printing and Melt-Electrowriting of Shape-Morphing Polymers. ACS Appl Mater Interfaces 2021; 13:12767-12776. [PMID: 33389997 DOI: 10.1021/acsami.0c18608] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
We report the fabrication of scroll-like scaffolds with anisotropic topography using 4D printing based on a combination of 3D extrusion printing of methacrylated alginate, melt-electrowriting of polycaprolactone fibers, and shape-morphing of the fabricated object. A combination of 3D extrusion printing and melt-electrowriting allows programmed deposition of different materials and fabrication of structures with high resolution. Shape-morphing allows the transformation of a patterned surface of a printed structure in a pattern on inner surface of a folded object that is used to align cells. We demonstrate that the concentration of calcium ions, the environment media, and the geometrical shape of the scaffold influences shape-morphing that allows it to be efficiently programmed. Myoblasts cultured inside a scrolled bilayer scaffold demonstrate excellent viability and proliferation. Moreover, the patterned surface generated by PCL fibers allow a very high degree of orientation of cells, which cannot be achieved on the alginate layer without fibers.
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Affiliation(s)
- Gissela Constante
- Faculty of Engineering Sciences, University of Bayreuth, Ludwig Thoma Strasse 36A, Bayreuth 95447, Germany
| | - Indra Apsite
- Faculty of Engineering Sciences, University of Bayreuth, Ludwig Thoma Strasse 36A, Bayreuth 95447, Germany
| | - Hanin Alkhamis
- Faculty of Engineering Sciences, University of Bayreuth, Ludwig Thoma Strasse 36A, Bayreuth 95447, Germany
| | - Martin Dulle
- Forschungszentrum Jülich GmbH Jülich Centre for Neutron Science (JCNS-1) and Institute for Complex Systems (ICS-1), Jülich 52425, Germany
| | - Madeleine Schwarzer
- Leibniz Institute of Polymer Research Dresden e. V., Hohe Straße 6, Dresden 01069, Germany
| | - Anja Caspari
- Leibniz Institute of Polymer Research Dresden e. V., Hohe Straße 6, Dresden 01069, Germany
| | - Alla Synytska
- Leibniz Institute of Polymer Research Dresden e. V., Hohe Straße 6, Dresden 01069, Germany
- Faculty of Mathematics and Science, Institute of Physical Chemistry and Polymer Physics, Dresden University of Technology, Dresden 01062, Germany
| | - Sahar Salehi
- Department of Biomaterials, University of Bayreuth, Prof.-Rüdiger-Bormann Strasse 1, Bayreuth 95447, Germany
| | - Leonid Ionov
- Faculty of Engineering Sciences and Bavarian Polymer Institute, University of Bayreuth, Bayreuth 95447, Germany
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28
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Abstract
Shape-memory hydrogels can be fixed to an arbitrary temporary shape and recover their permanent shape under appropriate stimulus conditions. Their shape-memory behavior and biocompatible mechanical and chemical properties impart them with many biomedical applications. However, like most hydrogels, traditional shape-memory hydrogels suffer from intrinsic brittleness due to the network inhomogeneity and high water content. In the past, the double network (DN) scheme has been proved a robust method to improve the mechanical performance of hydrogels. Although 3D printing of DN hydrogels has been realized before, 3D printable shape-memory DN hydrogels have not been achieved so far. In this work, we propose a one-pot method for printing a biocompatible shape-memory DN hydrogel via fused deposition method. The two networks incorporated to the hydrogel ink are polyacrylamide (PAAm) and gelatin. The PAAm network is covalently cross-linked and responsible for the permanent shape, while the gelatin network has thermoreversible cross-links and responsible for fixing the temporary shape. The DN hydrogel shows 3 to 7 times higher fracture toughness than a single network gelatin or PAAm hydrogel and can be fixed to 300% of its original length under tension and 10% of its original thickness under compression. The ink compositions are tuned for optimal printing quality and shape-memory performance. The robust mechanical integrity and dramatic shape transformation capability of the 3D-printed shape-memory DN hydrogel will open-up new potential applications in transformative medical robots and self-deployable devices.
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Affiliation(s)
- Jiehao Chen
- The George W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
| | - Jiahe Huang
- The School of Chemical and Biomolecular Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
| | - Yuhang Hu
- The George W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
- The School of Chemical and Biomolecular Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
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29
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Han D, Wang Y, Yang C, Lee H. Multimaterial Printing for Cephalopod-Inspired Light-Responsive Artificial Chromatophores. ACS Appl Mater Interfaces 2021; 13:12735-12745. [PMID: 33390008 DOI: 10.1021/acsami.0c17623] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Cephalopods use chromatophores distributed on their soft skin to change skin color and its pattern. Each chromatophore consists of a central sac containing pigment granules and radial muscles surrounding the sac. The contraction of the radial muscle causes the central sac to expand in area, making the color of the pigment more visible. With the chromatophores actuating individually, cephalopods can create extremely complex skin color patterns, which they utilize for exquisite functions including camouflage and communication. Inspired by this mechanism, we present an artificial chromatophore that can modulate its color pattern in response to light. Multimaterial projection microstereolithography is used to integrate three functional components including a photoactive hydrogel composite with polydopamine nanoparticles (PDA-NPs), acrylic acid hydrogel, and poly(ethylene glycol) diacrylate. In order to generate light-driven actuation of the artificial chromatophore, the photothermal effect of the PDA-NPs, light-responsive deformation of the photoactive hydrogel composite, and the produced mechanical stresses are studied. Mechanical properties and interfacial bonding strengths between different materials are also investigated to ensure structural integrity during actuation. We demonstrate pattern modulation of the light-responsive artificial chromatophores (LACs) with the projection of different light patterns. The LAC may suggest a new concept for various engineering applications such as the camouflage interface, biophotonic device, and flexible display.
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Affiliation(s)
- Daehoon Han
- Department of Mechanical and Aerospace Engineering, Rutgers University, New Brunswick, New Jersey 08854, United States
| | - Yueping Wang
- Department of Mechanical and Aerospace Engineering, Rutgers University, New Brunswick, New Jersey 08854, United States
| | - Chen Yang
- Department of Mechanical and Aerospace Engineering, Rutgers University, New Brunswick, New Jersey 08854, United States
| | - Howon Lee
- Department of Mechanical and Aerospace Engineering, Rutgers University, New Brunswick, New Jersey 08854, United States
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30
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Wang Y, Cui H, Wang Y, Xu C, Esworthy TJ, Hann SY, Boehm M, Shen YL, Mei D, Zhang LG. 4D Printed Cardiac Construct with Aligned Myofibers and Adjustable Curvature for Myocardial Regeneration. ACS Appl Mater Interfaces 2021; 13:12746-12758. [PMID: 33405502 PMCID: PMC9554838 DOI: 10.1021/acsami.0c17610] [Citation(s) in RCA: 45] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/09/2023]
Abstract
As an innovative additive manufacturing process, 4D printing can be utilized to generate predesigned, self-assembly structures which can actuate time-dependent, and dynamic shape-changes. Compared to other manufacturing techniques used for tissue engineering purposes, 4D printing has the advantage of being able to fabricate reprogrammable dynamic tissue constructs that can promote uniform cellular growth and distribution. For this study, a digital light processing (DLP)-based printing technique was developed to fabricate 4D near-infrared (NIR) light-sensitive cardiac constructs with highly aligned microstructure and adjustable curvature. As the curvature of the heart is varied across its surface, the 4D cardiac constructs can change their shape on-demand to mimic and recreate the curved topology of myocardial tissue for seamless integration. To mimic the aligned structure of the human myocardium and to achieve the 4D shape change, a NIR light-sensitive 4D ink material, consisting of a shape memory polymer and graphene, was created to fabricate microgroove arrays with different widths. The results of our study illustrate that our innovative NIR-responsive 4D constructs exhibit the capacity to actuate a dynamic and remotely controllable spatiotemporal transformation. Furthermore, the optimal microgroove width was discovered via culturing human induced pluripotent stem cell-derived cardiomyocytes and mesenchymal stem cells onto the constructs' surface and analyzing both their cellular morphology and alignment. The cell proliferation profiles and differentiation of tricultured human-induced pluripotent stem cell-derived cardiomyocytes, mesenchymal stem cells, and endothelial cells, on the printed constructs, were also studied using a Cell Counting Kit-8 and immunostaining. Our results demonstrate a uniform distribution of aligned cells and excellent myocardial maturation on our 4D curved cardiac constructs. This study not only provides an efficient method for manufacturing curved tissue architectures with uniform cell distributions, but also extends the potential applications of 4D printing for tissue regeneration.
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Affiliation(s)
| | | | | | | | | | | | - Manfred Boehm
- National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, Maryland 20892, United States
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31
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Abstract
Cryogels are matrices that are formed in moderately frozen solutions of monomeric or polymeric precursors. They have the advantages of interconnected macropores, structural stability, and compressibility. Meanwhile, thermally induced shape memory is an attractive feature of certain functional materials. Although there have been several studies concerning shape-memory cryogels, little work has been conducted on shape-memory cryogels with biodegradability. In this study, a water-based biodegradable difunctional polyurethane with a shape-memory property was synthesized and used as the nanoparticulate crosslinker to react with chitosan to form a shape-memory cryogel. The thermally induced shape-memory mechanism was clarified using in situ wide-angle X-ray scattering (WAXS) and small-angle X-ray scattering (SAXS) during the shape-memory process. The in situ WAXS showed the changes of crystallinity in the crosslinker and the cryogel during the shape fixation and recovery processes. The in situ SAXS revealed the orientation of crystallinity of the crosslinker and the cryogel as the mechanism for shape memory. The strip-shape cryogel was deformed at 50 °C to U-shape and fixed at - 20 °C, which was squeezable at 25 °C and returned to the strip-shape at 50 °C in air. The shape recovery was further tested in water at two different temperatures. The injected cryogel recovered the U-shape in 4 °C water, representing elastic recovery, and transformed to a long strip in 37 °C water, representing the switchable shape memory. Moreover, the shape-memory cryogel sheet with a large dimension (10 mm × 10 mm × 1.1 mm cryogel sheet) or with complex structures (N, T, and U shapes) could be fixed as a rod, injected through a 16 G needle, and return to its original shape in 37 °C water, all of which could not be achieved by the conventional cryogel. Human mesenchymal stem cells grown in the shape-memory cryogel scaffolds displayed long-term proliferation and chondrogenic potential. Their unique injectability and cytocompatibility suggested potential applications of shape-memory cryogels as injectable and expandable templates for tissue engineering and minimally invasive surgery.
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Affiliation(s)
- Chih-Yu Fu
- Institute of Polymer Science and Engineering, National Taiwan University, No. 1, Sec. 4 Roosevelt Road, Taipei Taiwan 10617, Republic of China
| | - Wei-Tsung Chuang
- National Synchrotron Radiation Research Center, Hsinchu, Taiwan 30076, Republic of China
| | - Shan-Hui Hsu
- Institute of Polymer Science and Engineering, National Taiwan University, No. 1, Sec. 4 Roosevelt Road, Taipei Taiwan 10617, Republic of China
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32
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Boire TC, Himmel LE, Yu F, Guth CM, Dollinger BR, Werfel TA, Balikov DA, Duvall CL. Effect of pore size and spacing on neovascularization of a biodegradble shape memory polymer perivascular wrap. J Biomed Mater Res A 2021; 109:272-288. [PMID: 32490564 PMCID: PMC8270373 DOI: 10.1002/jbm.a.37021] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2019] [Revised: 04/11/2020] [Accepted: 04/19/2020] [Indexed: 12/13/2022]
Abstract
Neointimal hyperplasia (NH) is a main source of failures in arteriovenous fistulas and vascular grafts. Several studies have demonstrated the promise of perivascular wraps to reduce NH via promotion of adventitial neovascularization and providing mechanical support. Limited clinical success thus far may be due to inappropriate material selection (e.g., nondegradable, too stiff) and geometric design (e.g., pore size and spacing, diameter). The influence of pore size and spacing on implant neovascularization is investigated here for a new biodegradable, thermoresponsive shape memory polymer (SMP) perivascular wrap. Following an initial pilot, 21 mice were each implanted with six scaffolds: four candidate SMP macroporous designs (a-d), a nonporous SMP control (e), and microporous GORETEX (f). Mice were sacrificed after 4 (N = 5), 14 (N = 8), and 28 (N = 8) days. There was a statistically significant increase in neovascularization score between all macroporous groups compared to nonporous SMP (p < .023) and microporous GORETEX (p < .007) controls at Day 28. Wider-spaced, smaller-sized pore designs (223 μm-spaced, 640 μm-diameter Design c) induced the most robust angiogenic response, with greater microvessel number (p < .0114) and area (p < .0055) than nonporous SMPs and GORETEX at Day 28. This design also produced significantly greater microvessel density than nonporous SMPs (p = 0.0028) and a smaller-spaced, larger-sized pore (155 μm-spaced, 1,180 μm-sized Design b) design (p = .0013). Strong neovascularization is expected to reduce NH, motivating further investigation of this SMP wrap with controlled pore spacing and size in more advanced arteriovenous models.
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Affiliation(s)
- Timothy C Boire
- Department of Biomedical Engineering, Vanderbilt University, Nashville, Tennessee, USA
- Department of Mechanical Engineering, Vanderbilt University, Nashville, Tennessee, USA
| | - Lauren E Himmel
- Department of Pathology, Microbiology and Immunology, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - Fang Yu
- Department of Biomedical Engineering, Vanderbilt University, Nashville, Tennessee, USA
| | - Christy M Guth
- Department of Surgery, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - Bryan R Dollinger
- Department of Biomedical Engineering, Vanderbilt University, Nashville, Tennessee, USA
| | - Thomas A Werfel
- Department of Biomedical Engineering, Vanderbilt University, Nashville, Tennessee, USA
- Biomedical Engineering Program, University of Mississippi, Oxford, Mississippi, USA
| | - Daniel A Balikov
- Department of Biomedical Engineering, Vanderbilt University, Nashville, Tennessee, USA
- Department of Mechanical Engineering, Vanderbilt University, Nashville, Tennessee, USA
| | - Craig L Duvall
- Department of Biomedical Engineering, Vanderbilt University, Nashville, Tennessee, USA
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Cera L, Gonzalez GM, Liu Q, Choi S, Chantre CO, Lee J, Gabardi R, Choi MC, Shin K, Parker KK. A bioinspired and hierarchically structured shape-memory material. Nat Mater 2021; 20:242-249. [PMID: 32868876 DOI: 10.1038/s41563-020-0789-2] [Citation(s) in RCA: 46] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/13/2019] [Accepted: 07/29/2020] [Indexed: 06/11/2023]
Abstract
Shape-memory polymeric materials lack long-range molecular order that enables more controlled and efficient actuation mechanisms. Here, we develop a hierarchical structured keratin-based system that has long-range molecular order and shape-memory properties in response to hydration. We explore the metastable reconfiguration of the keratin secondary structure, the transition from α-helix to β-sheet, as an actuation mechanism to design a high-strength shape-memory material that is biocompatible and processable through fibre spinning and three-dimensional (3D) printing. We extract keratin protofibrils from animal hair and subject them to shear stress to induce their self-organization into a nematic phase, which recapitulates the native hierarchical organization of the protein. This self-assembly process can be tuned to create materials with desired anisotropic structuring and responsiveness. Our combination of bottom-up assembly and top-down manufacturing allows for the scalable fabrication of strong and hierarchically structured shape-memory fibres and 3D-printed scaffolds with potential applications in bioengineering and smart textiles.
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Affiliation(s)
- Luca Cera
- Disease Biophysics Group, John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, MA, USA
| | - Grant M Gonzalez
- Disease Biophysics Group, John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, MA, USA
| | - Qihan Liu
- Disease Biophysics Group, John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, MA, USA
| | - Suji Choi
- Disease Biophysics Group, John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, MA, USA
| | - Christophe O Chantre
- Disease Biophysics Group, John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, MA, USA
| | - Juncheol Lee
- Department of Bio and Brain Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Korea
| | - Rudy Gabardi
- Disease Biophysics Group, John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, MA, USA
| | - Myung Chul Choi
- Department of Bio and Brain Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Korea
| | - Kwanwoo Shin
- Department of Chemistry and Institute of Biological Interfaces, Sogang University, Seoul, Korea
| | - Kevin Kit Parker
- Disease Biophysics Group, John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, MA, USA.
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Schönfeld D, Chalissery D, Wenz F, Specht M, Eberl C, Pretsch T. Actuating Shape Memory Polymer for Thermoresponsive Soft Robotic Gripper and Programmable Materials. Molecules 2021; 26:522. [PMID: 33498348 PMCID: PMC7864034 DOI: 10.3390/molecules26030522] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2020] [Revised: 01/08/2021] [Accepted: 01/18/2021] [Indexed: 11/16/2022] Open
Abstract
For soft robotics and programmable metamaterials, novel approaches are required enabling the design of highly integrated thermoresponsive actuating systems. In the concept presented here, the necessary functional component was obtained by polymer syntheses. First, poly(1,10-decylene adipate) diol (PDA) with a number average molecular weight M n of 3290 g·mol-1 was synthesized from 1,10-decanediol and adipic acid. Afterward, the PDA was brought to reaction with 4,4'-diphenylmethane diisocyanate and 1,4-butanediol. The resulting polyester urethane (PEU) was processed to the filament, and samples were additively manufactured by fused-filament fabrication. After thermomechanical treatment, the PEU reliably actuated under stress-free conditions by expanding on cooling and shrinking on heating with a maximum thermoreversible strain of 16.1%. Actuation stabilized at 12.2%, as verified in a measurement comprising 100 heating-cooling cycles. By adding an actuator element to a gripper system, a hen's egg could be picked up, safely transported and deposited. Finally, one actuator element each was built into two types of unit cells for programmable materials, thus enabling the design of temperature-dependent behavior. The approaches are expected to open up new opportunities, e.g., in the fields of soft robotics and shape morphing.
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Affiliation(s)
- Dennis Schönfeld
- Fraunhofer Institute for Applied Polymer Research IAP, Geiselbergstr. 69, 14476 Potsdam, Germany; (D.S.); (D.C.)
| | - Dilip Chalissery
- Fraunhofer Institute for Applied Polymer Research IAP, Geiselbergstr. 69, 14476 Potsdam, Germany; (D.S.); (D.C.)
| | - Franziska Wenz
- Fraunhofer Institute for Mechanics of Materials IWM, Wöhlerstr. 11, 79108 Freiburg, Germany; (F.W.); (M.S.); (C.E.)
- Department of Microsystems Engineering IMTEK, University of Freiburg, Georges-Koehler-Allee 078, 79110 Freiburg, Germany
| | - Marius Specht
- Fraunhofer Institute for Mechanics of Materials IWM, Wöhlerstr. 11, 79108 Freiburg, Germany; (F.W.); (M.S.); (C.E.)
- Department of Microsystems Engineering IMTEK, University of Freiburg, Georges-Koehler-Allee 078, 79110 Freiburg, Germany
| | - Chris Eberl
- Fraunhofer Institute for Mechanics of Materials IWM, Wöhlerstr. 11, 79108 Freiburg, Germany; (F.W.); (M.S.); (C.E.)
- Department of Microsystems Engineering IMTEK, University of Freiburg, Georges-Koehler-Allee 078, 79110 Freiburg, Germany
| | - Thorsten Pretsch
- Fraunhofer Institute for Applied Polymer Research IAP, Geiselbergstr. 69, 14476 Potsdam, Germany; (D.S.); (D.C.)
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Abstract
Intrinsically disordered proteins have dramatically changed the structure-function paradigm of proteins in the 21st century. Resilin is a native elastic insect protein, which features intrinsically disordered structure, unusual multi-stimuli responsiveness and outstanding resilience. Advances in computational techniques, polypeptide synthesis methods and modular protein engineering routines have led to the development of novel resilin-like polypeptides (RLPs) including modular RLPs, expanding their applications in tissue engineering, drug delivery, bioimaging, biosensors, catalysis and bioelectronics. However, how the responsive behaviour of RLPs is encoded in the amino acid sequence level remains elusive. This review summarises the milestones of RLPs, and discusses the development of modular RLP-based biomaterials, their current applications, challenges and future perspectives. A perspective of future research is that sequence and responsiveness profiling of RLPs can provide a new platform for the design and development of new modular RLP-based biomaterials with programmable structure, properties and functions.
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Affiliation(s)
- Rajkamal Balu
- Chemical and Environmental Engineering, School of Engineering, RMIT University, Melbourne, VIC, 3000, Australia
| | - Naba K Dutta
- Chemical and Environmental Engineering, School of Engineering, RMIT University, Melbourne, VIC, 3000, Australia.
| | - Ankit K Dutta
- Department of Medical Oncology, Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA, 02115, USA
| | - Namita Roy Choudhury
- Chemical and Environmental Engineering, School of Engineering, RMIT University, Melbourne, VIC, 3000, Australia.
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Fletcher GK, Nash LD, Graul LM, Jang LK, Herting SM, Wilcox MD, Touchet TJ, Sweatt AK, McDougall MP, Wright SM, Maitland DJ. Chemical Modifications of Porous Shape Memory Polymers for Enhanced X-ray and MRI Visibility. Molecules 2020; 25:E4660. [PMID: 33066091 PMCID: PMC7587375 DOI: 10.3390/molecules25204660] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2020] [Revised: 10/07/2020] [Accepted: 10/12/2020] [Indexed: 12/02/2022] Open
Abstract
The goal of this work was to develop a shape memory polymer (SMP) foam with visibility under both X-ray and magnetic resonance imaging (MRI) modalities. A porous polymeric material with these properties is desirable in medical device development for applications requiring thermoresponsive tissue scaffolds with clinical imaging capabilities. Dual modality visibility was achieved by chemically incorporating monomers with X-ray visible iodine-motifs and MRI visible monomers with gadolinium content. Physical and thermomechanical characterization showed the effect of increased gadopentetic acid (GPA) on shape memory behavior. Multiple compositions showed brightening effects in pilot, T1-weighted MR imaging. There was a correlation between the polymeric density and X-ray visibility on expanded and compressed SMP foams. Additionally, extractions and indirect cytocompatibility studies were performed to address toxicity concerns of gadolinium-based contrast agents (GBCAs). This material platform has the potential to be used in a variety of medical devices.
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Affiliation(s)
- Grace K. Fletcher
- Texas A&M University Biomedical Engineering, Bizzell St, College Station, TX 77843, USA; (G.K.F.); (L.M.G.); (L.K.J.); (S.M.H.); (M.D.W.); (T.J.T.); (A.K.S.); (M.P.M.); (S.M.W.)
| | | | - Lance M. Graul
- Texas A&M University Biomedical Engineering, Bizzell St, College Station, TX 77843, USA; (G.K.F.); (L.M.G.); (L.K.J.); (S.M.H.); (M.D.W.); (T.J.T.); (A.K.S.); (M.P.M.); (S.M.W.)
| | - Lindy K. Jang
- Texas A&M University Biomedical Engineering, Bizzell St, College Station, TX 77843, USA; (G.K.F.); (L.M.G.); (L.K.J.); (S.M.H.); (M.D.W.); (T.J.T.); (A.K.S.); (M.P.M.); (S.M.W.)
| | - Scott M. Herting
- Texas A&M University Biomedical Engineering, Bizzell St, College Station, TX 77843, USA; (G.K.F.); (L.M.G.); (L.K.J.); (S.M.H.); (M.D.W.); (T.J.T.); (A.K.S.); (M.P.M.); (S.M.W.)
| | - Matthew D. Wilcox
- Texas A&M University Biomedical Engineering, Bizzell St, College Station, TX 77843, USA; (G.K.F.); (L.M.G.); (L.K.J.); (S.M.H.); (M.D.W.); (T.J.T.); (A.K.S.); (M.P.M.); (S.M.W.)
| | - Tyler J. Touchet
- Texas A&M University Biomedical Engineering, Bizzell St, College Station, TX 77843, USA; (G.K.F.); (L.M.G.); (L.K.J.); (S.M.H.); (M.D.W.); (T.J.T.); (A.K.S.); (M.P.M.); (S.M.W.)
| | - Ana Katarina Sweatt
- Texas A&M University Biomedical Engineering, Bizzell St, College Station, TX 77843, USA; (G.K.F.); (L.M.G.); (L.K.J.); (S.M.H.); (M.D.W.); (T.J.T.); (A.K.S.); (M.P.M.); (S.M.W.)
| | - Mary P. McDougall
- Texas A&M University Biomedical Engineering, Bizzell St, College Station, TX 77843, USA; (G.K.F.); (L.M.G.); (L.K.J.); (S.M.H.); (M.D.W.); (T.J.T.); (A.K.S.); (M.P.M.); (S.M.W.)
- Texas A&M University Electrical and Computer Engineering, Bizzell St, College Station, TX 77843, USA
| | - Steven M. Wright
- Texas A&M University Biomedical Engineering, Bizzell St, College Station, TX 77843, USA; (G.K.F.); (L.M.G.); (L.K.J.); (S.M.H.); (M.D.W.); (T.J.T.); (A.K.S.); (M.P.M.); (S.M.W.)
- Texas A&M University Electrical and Computer Engineering, Bizzell St, College Station, TX 77843, USA
| | - Duncan J. Maitland
- Texas A&M University Biomedical Engineering, Bizzell St, College Station, TX 77843, USA; (G.K.F.); (L.M.G.); (L.K.J.); (S.M.H.); (M.D.W.); (T.J.T.); (A.K.S.); (M.P.M.); (S.M.W.)
- Shape Memory Medical Inc., Santa Clara, CA 95054, USA;
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Gayet RV, de Puig H, English MA, Soenksen LR, Nguyen PQ, Mao AS, Angenent-Mari NM, Collins JJ. Creating CRISPR-responsive smart materials for diagnostics and programmable cargo release. Nat Protoc 2020; 15:3030-3063. [PMID: 32807909 DOI: 10.1038/s41596-020-0367-8] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2019] [Accepted: 05/28/2020] [Indexed: 02/08/2023]
Abstract
Materials that sense and respond to biological signals in their environment have a broad range of potential applications in drug delivery, medical devices and diagnostics. Nucleic acids are important biological cues that encode information about organismal identity and clinically relevant phenotypes such as drug resistance. We recently developed a strategy to design nucleic acid-responsive materials using the CRISPR-associated nuclease Cas12a as a user-programmable sensor and material actuator. This approach improves on the sensitivity of current DNA-responsive materials while enabling their rapid repurposing toward new sequence targets. Here, we provide a comprehensive resource for the design, synthesis and actuation of CRISPR-responsive hydrogels. First, we provide guidelines for the synthesis of Cas12a guide RNAs (gRNAs) for in vitro applications. We then outline methods for the synthesis of both polyethylene glycol-DNA (PEG-DNA) and polyacrylamide-DNA (PA-DNA) hydrogels, as well as their controlled degradation using Cas12a for the release of cargos, including small molecules, enzymes, nanoparticles and living cells within hours. Finally, we detail the design and assembly of microfluidic paper-based devices that use Cas12a-sensitive hydrogels to convert DNA inputs into a variety of visual and electronic readouts for use in diagnostics. Following the initial validation of the gRNA and Cas12a components (1 d), the synthesis and testing of either PEG-DNA or PA-DNA hydrogels require 3-4 d of laboratory time. Optional extensions, including the release of primary human cells or the design of the paper-based diagnostic, require an additional 2-3 d each.
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Affiliation(s)
- Raphael V Gayet
- Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, MA, USA
- Institute for Medical Engineering and Science, Massachusetts Institute of Technology, Cambridge, MA, USA
- Microbiology Graduate Program, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Helena de Puig
- Institute for Medical Engineering and Science, Massachusetts Institute of Technology, Cambridge, MA, USA
- Wyss Institute for Biologically Inspired Engineering, Harvard University, Boston, MA, USA
| | - Max A English
- Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, MA, USA
- Institute for Medical Engineering and Science, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Luis R Soenksen
- Institute for Medical Engineering and Science, Massachusetts Institute of Technology, Cambridge, MA, USA
- Wyss Institute for Biologically Inspired Engineering, Harvard University, Boston, MA, USA
- Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Peter Q Nguyen
- Wyss Institute for Biologically Inspired Engineering, Harvard University, Boston, MA, USA
| | - Angelo S Mao
- Institute for Medical Engineering and Science, Massachusetts Institute of Technology, Cambridge, MA, USA
- Wyss Institute for Biologically Inspired Engineering, Harvard University, Boston, MA, USA
| | - Nicolaas M Angenent-Mari
- Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, MA, USA
- Institute for Medical Engineering and Science, Massachusetts Institute of Technology, Cambridge, MA, USA
- Wyss Institute for Biologically Inspired Engineering, Harvard University, Boston, MA, USA
| | - James J Collins
- Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, MA, USA.
- Institute for Medical Engineering and Science, Massachusetts Institute of Technology, Cambridge, MA, USA.
- Wyss Institute for Biologically Inspired Engineering, Harvard University, Boston, MA, USA.
- Synthetic Biology Center, Massachusetts Institute of Technology, Cambridge, MA, USA.
- Infectious Disease and Microbiome Program, Broad Institute of MIT and Harvard, Cambridge, MA, USA.
- Harvard-MIT Program in Health Sciences and Technology, Cambridge, MA, USA.
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G Jayanthi K, S K S. Cholesterol oxidase immobilized inulin based nanocomposite as the sensing material for cholesterol in biological and food samples. Enzyme Microb Technol 2020; 140:109631. [PMID: 32912691 DOI: 10.1016/j.enzmictec.2020.109631] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2020] [Revised: 07/07/2020] [Accepted: 07/07/2020] [Indexed: 01/16/2023]
Abstract
In the present study, inulin based nanocomposite viz., TiO2-MWCNT@Inulin was prepared by embedding Inulin (a biopolymer extracted from Allium sativum L.) with TiO2 and MWCNTs. The morphology of the prepared nanocomposite was characterized by High Resolution transmission electron microscopy (HRTEM). Cholesterol oxidase (ChOx) enzyme was then immobilized into the nanocomposite and the immobilization was examined by UV-vis and FT-IR spectral studies. The ChOx immobilized nanocomposite was integrated into carbon paste (CP) matrix to prepare the working electrode for the sensing of cholesterol. Electrochemical characterization of the modified CP/TiO2-MWCNT@Inulin/ChOx electrode was done by cyclic voltammetric (CV) and electrochemical impedance spectroscopic (EIS) studies. Differential pulse voltammetric (DPV) studies were carried out to determine the concentration of cholesterol at the interface of the newly fabricated electrode. The fabricated electrode demonstrated a linear range from 83 μM to 14.28 mM, low limit of detection (35 μM), good sensitivity (21.26 μA mM-1 cm-2), low Km (0.49 mM), high stability (120 days) and good selectivity. The presence of Inulin biopolymer played a vital role in attaching ChOx enzyme firmly to the nanocomposite thereby enhancing the stability and electron transfer efficiency of the electrode. The analysis of product that was formed within the electrochemical cell during the electrochemical oxidation of cholesterol was performed by using sodium nitroprusside. This resulted in a deep purple coloured solution which suggested the electrochemical conversion of cholesterol to cholestenone. The practical applicability of the fabricated electrode was also assessed by the determination of cholesterol in spiked blood serum and milk samples.
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Affiliation(s)
| | - Suja S K
- Department of Chemistry, Lady Doak College, Madurai, India.
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Jessen SL, Friedemann MC, Mullen AE, Ginn-Hedman AM, Herting SM, Maitland DJ, Clubb FJ. Micro-CT and histopathology methods to assess host response of aneurysms treated with shape memory polymer foam-coated coils versus bare metal coil occlusion devices. J Biomed Mater Res B Appl Biomater 2020; 108:2238-2249. [PMID: 31961062 PMCID: PMC7379400 DOI: 10.1002/jbm.b.34561] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2019] [Revised: 12/04/2019] [Accepted: 01/07/2020] [Indexed: 11/06/2022]
Abstract
Recent studies utilizing shape memory polymer foams to coat embolizing coils have shown potential benefits over current aneurysm treatments. In the current study utilizing a rabbit-elastase aneurysm model, the performance of test article (foam-coated coil [FCC]) and control (bare platinum coils [BPCs]) devices were compared at 30, 90, and 180 days using micro-CT and histological assessments. The host response was measured by identifying the cells regionally present within the aneurysm, and assessing the degree of residual debris and connective tissue. The 3D reconstructions of aneurysms provided context for histologic findings, and aided in the overall aneurysm assessment. At all time points, >75% of the cells categorized in each aneurysm were associated with a bioactive yet biocompatible host response (vs. the remainder of cells that were associated with acute inflammation). The extracellular matrix exhibited a transition from residual fibrin at 30 days to a greater degree of connective tissue at 90 and 180 days. Although the control BPC-treated aneurysms exhibited a greater degree of connective tissue at the earliest time point examined (30 days), by 180 days, the FCC-treated aneurysms had more connective tissue and less debris overall than the control aneurysms. When considering cell types and extracellular matrix composition, the overall host response scores were significantly better in FCC-treated aneurysms at the later time point. Based on the results of these metrics, the FCC device may lead to an advanced tissue remodeling response over BPC occlusion devices.
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Affiliation(s)
- Staci L. Jessen
- Department of Veterinary Pathobiology, Texas A&M University, College Station, Texas
- Department of Biomedical Engineering, Texas A&M University, College Station, Texas
| | - Molly C. Friedemann
- Department of Veterinary Pathobiology, Texas A&M University, College Station, Texas
| | - Annmarie E. Mullen
- Department of Biomedical Engineering, Texas A&M University, College Station, Texas
| | | | - Scott M. Herting
- Department of Biomedical Engineering, Texas A&M University, College Station, Texas
| | - Duncan J. Maitland
- Department of Biomedical Engineering, Texas A&M University, College Station, Texas
| | - Fred J. Clubb
- Department of Veterinary Pathobiology, Texas A&M University, College Station, Texas
- Department of Biomedical Engineering, Texas A&M University, College Station, Texas
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Worch JC, Weems AC, Yu J, Arno MC, Wilks TR, Huckstepp RTR, O'Reilly RK, Becker ML, Dove AP. Elastomeric polyamide biomaterials with stereochemically tuneable mechanical properties and shape memory. Nat Commun 2020; 11:3250. [PMID: 32591525 PMCID: PMC7320000 DOI: 10.1038/s41467-020-16945-8] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2019] [Accepted: 05/27/2020] [Indexed: 12/14/2022] Open
Abstract
Biocompatible polymers are widely used in tissue engineering and biomedical device applications. However, few biomaterials are suitable for use as long-term implants and these examples usually possess limited property scope, can be difficult to process, and are non-responsive to external stimuli. Here, we report a class of easily processable polyamides with stereocontrolled mechanical properties and high-fidelity shape memory behaviour. We synthesise these materials using the efficient nucleophilic thiol-yne reaction between a dipropiolamide and dithiol to yield an α,β - unsaturated carbonyl moiety along the polymer backbone. By rationally exploiting reaction conditions, the alkene stereochemistry is modulated between 35-82% cis content and the stereochemistry dictates the bulk material properties such as tensile strength, modulus, and glass transition. Further access to materials possessing a broader range of thermal and mechanical properties is accomplished by polymerising a variety of commercially available dithiols with the dipropiolamide monomer.
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Affiliation(s)
- Joshua C Worch
- School of Chemistry, University of Birmingham, Edgbaston, Birmingham, B15 2TT, UK
| | - Andrew C Weems
- School of Chemistry, University of Birmingham, Edgbaston, Birmingham, B15 2TT, UK
| | - Jiayi Yu
- Department of Polymer Science, The University of Akron, Akron, OH, 44325, USA
| | - Maria C Arno
- School of Chemistry, University of Birmingham, Edgbaston, Birmingham, B15 2TT, UK
| | - Thomas R Wilks
- School of Chemistry, University of Birmingham, Edgbaston, Birmingham, B15 2TT, UK
| | | | - Rachel K O'Reilly
- School of Chemistry, University of Birmingham, Edgbaston, Birmingham, B15 2TT, UK
| | - Matthew L Becker
- Department of Chemistry, Department of Mechanical Engineering & Materials Science, Department of Orthopaedic Surgery, Duke University, 308 Research Drive, Durham, NC, 27708, USA.
| | - Andrew P Dove
- School of Chemistry, University of Birmingham, Edgbaston, Birmingham, B15 2TT, UK.
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Jang LK, Fletcher GK, Monroe MBB, Maitland DJ. Biodegradable shape memory polymer foams with appropriate thermal properties for hemostatic applications. J Biomed Mater Res A 2020; 108:1281-1294. [PMID: 32061006 PMCID: PMC7364661 DOI: 10.1002/jbm.a.36901] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2019] [Revised: 02/08/2020] [Accepted: 02/10/2020] [Indexed: 11/11/2022]
Abstract
Shape memory polymer (SMP) foams are a promising material for hemostatic dressings due to their biocompatibility, high surface area, excellent shape recovery, and ability to quickly initiate blood clotting. Biodegradable SMP foams could eliminate the need for a secondary removal procedure of hemostatic material from the patients' wound, further facilitating wound healing. In this study, we developed hydrolytically and oxidatively biodegradable SMP foams by reacting polyols (triethanolamine or glycerol) with 6-aminocaproic acid or glycine to generate foaming monomers with degradable ester bonds. These monomers were used in foam synthesis to provide highly crosslinked SMP foam structures. The ester-containing foams showed clinically relevant thermal properties that were comparable to controls and excellent shape recovery within eight min. Triethanolamine-based ester-containing foams showed interconnected porous structure along with increased mechanical strength. Faster hydrolytic and oxidative biodegradation rates were achieved in ester-containing foams in comparison to controls. These biodegradable SMP foams with clinically applicable thermal properties possess great potential as an effective hemostatic device for use in hospitals or on battlefields.
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Affiliation(s)
- Lindy K. Jang
- Department of Biomedical Engineering, Texas A&M University, College Station, Texas
| | - Grace K. Fletcher
- Department of Biomedical Engineering, Texas A&M University, College Station, Texas
| | - Mary Beth B. Monroe
- Department of Biomedical and Chemical Engineering, Syracuse University, Syracuse, New York
| | - Duncan J. Maitland
- Department of Biomedical Engineering, Texas A&M University, College Station, Texas
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Kim DW, Yang JC, Lee S, Park S. Neuromorphic Processing of Pressure Signal Using Integrated Sensor-Synaptic Device Capable of Selective and Reversible Short- and Long-Term Plasticity Operation. ACS Appl Mater Interfaces 2020; 12:23207-23216. [PMID: 32342684 DOI: 10.1021/acsami.0c03904] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
To mimic the tactile sensing properties of the human skin, signals from tactile sensors need to be processed in an efficient manner. The integration of the tactile sensor with a neuromorphic device can potentially address this issue, as the neuromorphic device has both signal processing and memory capability through which parallel and efficient processing of information is possible. In this article, an intelligent haptic perception device (IHPD) is presented that combines pressure sensing with an organic electrochemical transistor-based synaptic device into a simple device architecture. More importantly, the IHPD is capable of rapid and reversible switching between short-term plasticity (STP) and long-term plasticity (LTP) operation through which accelerated learning, processing of new information, and distinctive operation of STP and LTP are possible. Various types of pressure information such as magnitude, rate, and duration were processed utilizing STP by which error-tolerant perception was demonstrated. Meanwhile, memorization and learning of pressure through a stepwise change in a conductive state was demonstrated using LTP. These demonstrations present unique approaches to process and learn tactile information, which can potentially be utilized in various electronic skin applications in the future.
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Affiliation(s)
- Da Won Kim
- Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
| | - Jun Chang Yang
- Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
| | - Seungkyu Lee
- Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
| | - Steve Park
- Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
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Sun S, Shi H, Moore S, Wang C, Ash-Shakoor A, Mather PT, Henderson JH, Ma Z. Progressive Myofibril Reorganization of Human Cardiomyocytes on a Dynamic Nanotopographic Substrate. ACS Appl Mater Interfaces 2020; 12:21450-21462. [PMID: 32326701 DOI: 10.1021/acsami.0c03464] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Cardiomyocyte (CM) alignment with striated myofibril organization is developed during early cardiac organogenesis. Previous work has successfully achieved in vitro CM alignment using a variety of biomaterial scaffolds and substrates with static topographic features. However, the cellular processes that occur during the response of CMs to dynamic surface topographic changes, which may provide a model of in vivo developmental progress of CM alignment within embryonic myocardium, remains poorly understood. To gain insights into these cellular processes involved in the response of CMs to dynamic topographic changes, we developed a dynamic topographic substrate that employs a shape memory polymer coated with polyelectrolyte multilayers to produce a flat-to-wrinkle surface transition when triggered by a change in incubation temperature. Using this system, we investigated cellular morphological alignment and intracellular myofibril reorganization in response to the dynamic wrinkle formation. Hence, we identified the progressive cellular processes of human-induced pluripotent stem cell-CMs in a time-dependent manner, which could provide a foundation for a mechanistic model of cardiac myofibril reorganization in response to extracellular microenvironment changes.
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Affiliation(s)
- Shiyang Sun
- Department of Biomedical & Chemical Engineering, Syracuse University, Syracuse, New York 13244, United States
- Syracuse Biomaterials Institute, Syracuse University, Syracuse, New York 13244, United States
| | - Huaiyu Shi
- Department of Biomedical & Chemical Engineering, Syracuse University, Syracuse, New York 13244, United States
- Syracuse Biomaterials Institute, Syracuse University, Syracuse, New York 13244, United States
| | - Sarah Moore
- Department of Biomedical & Chemical Engineering, Syracuse University, Syracuse, New York 13244, United States
- Syracuse Biomaterials Institute, Syracuse University, Syracuse, New York 13244, United States
| | - Chenyan Wang
- Department of Biomedical & Chemical Engineering, Syracuse University, Syracuse, New York 13244, United States
- Syracuse Biomaterials Institute, Syracuse University, Syracuse, New York 13244, United States
| | - Ariel Ash-Shakoor
- Department of Biomedical & Chemical Engineering, Syracuse University, Syracuse, New York 13244, United States
- Syracuse Biomaterials Institute, Syracuse University, Syracuse, New York 13244, United States
| | - Patrick T Mather
- Department of Chemical Engineering, Bucknell University, Lewisburg, Pennsylvania 17837, United States
| | - James H Henderson
- Department of Biomedical & Chemical Engineering, Syracuse University, Syracuse, New York 13244, United States
- Syracuse Biomaterials Institute, Syracuse University, Syracuse, New York 13244, United States
- BioInspired Syracuse: Institute for Material and Living Systems, Syracuse University, Syracuse, New York 13244, United States
| | - Zhen Ma
- Department of Biomedical & Chemical Engineering, Syracuse University, Syracuse, New York 13244, United States
- Syracuse Biomaterials Institute, Syracuse University, Syracuse, New York 13244, United States
- BioInspired Syracuse: Institute for Material and Living Systems, Syracuse University, Syracuse, New York 13244, United States
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Cherkasov VR, Mochalova EN, Babenyshev AV, Vasilyeva AV, Nikitin PI, Nikitin MP. Nanoparticle Beacons: Supersensitive Smart Materials with On/Off-Switchable Affinity to Biomedical Targets. ACS Nano 2020; 14:1792-1803. [PMID: 31944662 DOI: 10.1021/acsnano.9b07569] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Smart materials that can switch between different states under the influence of chemical triggers are highly demanded in biomedicine, where specific responsiveness to biomarkers is imperative for precise diagnostics and therapy. Superior selectivity of drug delivery to malignant cells may be achieved with the nanoagents that stay "inert" until "activation" by the characteristic profile of microenvironment cues (e.g., tumor metabolites, angiogenesis factors, microRNA/DNA, etc.). However, despite a wide variety and functional complexity of smart material designs, their real-life applications are hindered by very limited sensitivity to inputs. Here, we present ultrasensitive smart nanoagents with input-dependent On/Off switchable affinity to a biomedical target based on a combination of gold nanoparticles with low-energy polymer structures. In the proposed method, a nanoparticle-based agent is surface coated with a custom designed flexible polymer chain, which has an input-switchable structure that regulates accessibility of the terminal receptor for target binding. Implementation of the concept with a DNA-model of such polymer has yielded nanoagents that have input-dependent cell-targeting capabilities and responsiveness to as little as 30 fM of DNA input in 15 min lateral flow assay. Thus, we show that surface phenomena can augment nanoagents with capability for switchable affinity without compromising the sensitivity to inputs. The proposed approach is promising for development of next-generation theranostic agents and ultrasensitive nanosensors for point-of-care diagnostics.
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Affiliation(s)
- Vladimir R Cherkasov
- Moscow Institute of Physics and Technology , 9 Institutskii per. , 141700 Dolgoprudny, Moscow Region , Russia
- Prokhorov General Physics Institute of the Russian Academy of Sciences , 38 Vavilov St , 119991 Moscow , Russia
| | - Elizaveta N Mochalova
- Moscow Institute of Physics and Technology , 9 Institutskii per. , 141700 Dolgoprudny, Moscow Region , Russia
- Prokhorov General Physics Institute of the Russian Academy of Sciences , 38 Vavilov St , 119991 Moscow , Russia
| | - Andrey V Babenyshev
- Moscow Institute of Physics and Technology , 9 Institutskii per. , 141700 Dolgoprudny, Moscow Region , Russia
- Prokhorov General Physics Institute of the Russian Academy of Sciences , 38 Vavilov St , 119991 Moscow , Russia
| | - Alexandra V Vasilyeva
- Moscow Institute of Physics and Technology , 9 Institutskii per. , 141700 Dolgoprudny, Moscow Region , Russia
| | - Petr I Nikitin
- Prokhorov General Physics Institute of the Russian Academy of Sciences , 38 Vavilov St , 119991 Moscow , Russia
| | - Maxim P Nikitin
- Moscow Institute of Physics and Technology , 9 Institutskii per. , 141700 Dolgoprudny, Moscow Region , Russia
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45
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Chayavanich K, Thiraphibundet P, Imyim A. Biocompatible film sensors containing red radish extract for meat spoilage observation. Spectrochim Acta A Mol Biomol Spectrosc 2020; 226:117601. [PMID: 31622828 DOI: 10.1016/j.saa.2019.117601] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/08/2018] [Revised: 07/22/2019] [Accepted: 10/06/2019] [Indexed: 06/10/2023]
Abstract
pH-sensitive films were developed based on biocompatible materials and natural pH sensitive dye. The films were successfully fabricated using starch/gelatin and red radish anthocyanin. The colors of films could be differentiated by naked eye within 5 min changing from orange to grey-purple at pH 2-12 and captured by a smartphone. The color parameters were evaluated by the Image J software. In addition, the color change of films was observed in ammonia gas atmosphere. The color stability of sensing films was evaluated and the results indicated that the films had great stability and were able to store more than two weeks. The results from intra-day and inter-day color response study showed good precision. Finally, the pH-sensitive films could be applied to real samples for real-time meat spoilage observation.
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Affiliation(s)
- Kasitnun Chayavanich
- Center of Excellence on Petrochemical and Materials Technology, Chulalongkorn University, Bangkok, 10330, Thailand; Department of Chemistry, Faculty of Science, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Pattara Thiraphibundet
- Department of Chemistry, Faculty of Science, Chulalongkorn University, Bangkok, 10330, Thailand; Nanotec-CU Center of Excellence on Food and Agriculture, Department of Chemistry, Faculty of Science, Chulalongkorn University, Bangkok 10330, Thailand
| | - Apichat Imyim
- Center of Excellence on Petrochemical and Materials Technology, Chulalongkorn University, Bangkok, 10330, Thailand; Department of Chemistry, Faculty of Science, Chulalongkorn University, Bangkok, 10330, Thailand.
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46
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Masai H, Yokoyama T, Miyagishi HV, Liu M, Tachibana Y, Fujihara T, Tsuji Y, Terao J. Insulated conjugated bimetallopolymer with sigmoidal response by dual self-controlling system as a biomimetic material. Nat Commun 2020; 11:408. [PMID: 31964865 PMCID: PMC6972936 DOI: 10.1038/s41467-019-14271-2] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2019] [Accepted: 12/27/2019] [Indexed: 12/13/2022] Open
Abstract
Biological systems are known to spontaneously adjust the functioning of neurotransmitters, ion channels, and the immune system, being promoted or regulated through allosteric effects or inhibitors, affording non-linear responses to external stimuli. Here we report that an insulated conjugated bimetallopolymer, in which Ru(II) and Pt(II) complexes are mutually connected with insulated conjugations, exhibits phosphorescence in response to CO gas. The net profile corresponds to a sigmoidal response with a dual self-controlling system, where drastic changes were exhibited at two threshold concentrations. The first threshold for activation of the system is triggered by the depolymerization of the non-radiative conjugated polymer to luminescent monomers, while the second one for regulation is triggered by the switch in the rate-determining step of the Ru complex. Such a molecular design with cooperative multiple transition metals would provide routes for the development of higher-ordered artificial molecular systems bearing bioinspired responses with autonomous modulation.
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Affiliation(s)
- Hiroshi Masai
- Department of Basic Science, Graduate School of Arts and Sciences, The University of Tokyo, Tokyo, 153-8902, Japan
| | - Takuya Yokoyama
- Department of Energy and Hydrocarbon Chemistry, Graduate School of Engineering, Kyoto University, Kyoto, 615-8510, Japan
| | - Hiromichi V Miyagishi
- Department of Basic Science, Graduate School of Arts and Sciences, The University of Tokyo, Tokyo, 153-8902, Japan
| | - Maning Liu
- School of Engineering, RMIT University, Bundoora, Victoria, 3083, Australia
| | - Yasuhiro Tachibana
- School of Engineering, RMIT University, Bundoora, Victoria, 3083, Australia
| | - Tetsuaki Fujihara
- Department of Energy and Hydrocarbon Chemistry, Graduate School of Engineering, Kyoto University, Kyoto, 615-8510, Japan
| | - Yasushi Tsuji
- Department of Energy and Hydrocarbon Chemistry, Graduate School of Engineering, Kyoto University, Kyoto, 615-8510, Japan
| | - Jun Terao
- Department of Basic Science, Graduate School of Arts and Sciences, The University of Tokyo, Tokyo, 153-8902, Japan.
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Lai HY, Wang HQ, Lai JC, Li CH. A Self-Healing and Shape Memory Polymer that Functions at Body Temperature. Molecules 2019; 24:E3224. [PMID: 31487954 PMCID: PMC6767172 DOI: 10.3390/molecules24183224] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2019] [Revised: 08/30/2019] [Accepted: 09/01/2019] [Indexed: 11/17/2022] Open
Abstract
Dual-functional polymeric system combining shape memory with self-healing properties has attracted increasingly interests of researchers, as both of these properties are intelligent and promising characteristics. Moreover, shape memory polymer that functions at human body temperature (37 °C) are desirable because of their potential applications in biomedical field. Herein, we designed a polymer network with a permanent covalent crosslinking and abundant weak hydrogen bonds. The former introduces elasticity responsible and maintain the permanent shape, and the latter contributes to the temporary shape via network rearrangement. The obtained PDMS-COO-E polymer films exhibit excellent mechanical properties and the capability to efficiently self-heal for 6 h at room temperature. Furthermore, the samples turn from a viscous state into an elastic state at 37 °C. Therefore, this polymer has shape memory effects triggered by body temperature. This unique material will have a wide range of applications in many fields, containing wearable electronics, biomedical devices, and 4D printing.
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Affiliation(s)
- Hui-Ying Lai
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing National Laboratory of Microstructures, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210023, China
| | - Hong-Qin Wang
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing National Laboratory of Microstructures, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210023, China
| | - Jian-Cheng Lai
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing National Laboratory of Microstructures, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210023, China
| | - Cheng-Hui Li
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing National Laboratory of Microstructures, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210023, China.
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48
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Cheng X, Chen Y, Dai S, Bilek MMM, Bao S, Ye L. Bending shape memory behaviours of carbon fibre reinforced polyurethane-type shape memory polymer composites under relatively small deformation: Characterisation and computational simulation. J Mech Behav Biomed Mater 2019; 100:103372. [PMID: 31369958 DOI: 10.1016/j.jmbbm.2019.103372] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2019] [Revised: 06/30/2019] [Accepted: 07/24/2019] [Indexed: 11/19/2022]
Abstract
Shape memory polyurethanes (SMPU) have been of great interest in biomedical applications because of their unique ability to recover a primary shape by external actuation. This advantage can allow for easy suture and minimum tissue damage caused by surgery. Since SMPU suffer from low stiffness and low strength, carbon fibres have been widely used to reinforce SMPU, and their shape memory properties have been investigated using thermomechanical tensile tests. In reality, however, bending situations are more common than tensile situations, such as human skulls. In this study, carbon fibre reinforced SMPU (CF/SMPU) composites were studied as promising cranial implants that can offer shape memory properties, shape flexibility and high strength. First, the basic properties of pristine SMPU and CF/SMPU composites were characterised, including glass transition temperature (Tg), the viscosity of SMPU, the morphology of CF/SMPU, and their tensile and flexural mechanical properties. Then, a new method using rheometer was developed to study the shape memory behaviours of SMPU and CF/SMPU with three-point bending under relatively small deformations (≤1%), including flexural stress during programming and cooling, and bending recovery force during shape recovery. Finally, due to the invisibility of recovery process that was conducted in an enclosed temperature-controlling chamber of rheometer, the finite element method (FEM) was used to simulate the bending recovery test. The results showed carbon fibres significantly enhanced the mechanical properties (Young's modulus and flexural modulus) of SMPU. In terms of bending shape recovery, compared to pristine SMPU, CF/SMPU composites obtained substantially higher flexural stress during programming and cooling processes, and larger, more stable recovery force during recovery. The FEM results consolidated the peak recovery force of SMPU and the continuously growing recovery force of CF/SMPU as the temperature increased. Our findings on the improved mechanical and shape memory properties can provide a solid foundation for the potential applications of CF/SMPU composites as cranial implants.
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Affiliation(s)
- Xinying Cheng
- School of Aerospace, Mechanical and Mechatronic Engineering, The University of Sydney, NSW, 2006, Australia
| | - Yuan Chen
- School of Aerospace, Mechanical and Mechatronic Engineering, The University of Sydney, NSW, 2006, Australia.
| | - Shaocong Dai
- School of Aerospace, Mechanical and Mechatronic Engineering, The University of Sydney, NSW, 2006, Australia
| | - Marcela M M Bilek
- Applied and Plasma Physics, School of Physics, The University of Sydney, NSW, 2006, Australia
| | - Shisan Bao
- Discipline of Pathology and School of Medical Science, The University of Sydney, NSW, 2006, Australia; Bosch Institute, The University of Sydney, NSW, 2006, Australia; Charles Perkins Centre, The University of Sydney, NSW, 2006, Australia; Tongren Hospital, Shanghai Jiaotong University School of Medicine, China
| | - Lin Ye
- School of Aerospace, Mechanical and Mechatronic Engineering, The University of Sydney, NSW, 2006, Australia
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Gray ME, Meehan J, Blair EO, Ward C, Langdon SP, Morrison LR, Marland JRK, Tsiamis A, Kunkler IH, Murray A, Argyle D. Biocompatibility of common implantable sensor materials in a tumor xenograft model. J Biomed Mater Res B Appl Biomater 2019; 107:1620-1633. [PMID: 30367816 PMCID: PMC6767110 DOI: 10.1002/jbm.b.34254] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2018] [Revised: 08/30/2018] [Accepted: 09/09/2018] [Indexed: 12/22/2022]
Abstract
Real-time monitoring of tumor microenvironment parameters using an implanted biosensor could provide valuable information on the dynamic nature of a tumor's biology and its response to treatment. However, following implantation biosensors may lose functionality due to biofouling caused by the foreign body response (FBR). This study developed a novel tumor xenograft model to evaluate the potential of six biomaterials (silicon dioxide, silicon nitride, Parylene-C, Nafion, biocompatible EPOTEK epoxy resin, and platinum) to trigger a FBR when implanted into a solid tumor. Biomaterials were chosen based on their use in the construction of a novel biosensor, designed to measure spatial and temporal changes in intra-tumoral O2 , and pH. None of the biomaterials had any detrimental effect on tumor growth or body weight of the murine host. Immunohistochemistry showed no significant changes in tumor necrosis, hypoxic cell number, proliferation, apoptosis, immune cell infiltration, or collagen deposition. The absence of biofouling supports the use of these materials in biosensors; future investigations in preclinical cancer models are required, with a view to eventual applications in humans. To our knowledge this is the first documented investigation of the effects of modern biomaterials, used in the production of implantable sensors, on tumor tissue after implantation. © 2018 The Authors. Journal of Biomedical Materials Research Part B: Applied Biomaterials published by Wiley Periodicals, Inc. J Biomed Mater Res Part B, 2018. © 2018 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater 107B: 1620-1633, 2019.
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Affiliation(s)
- Mark E. Gray
- The Royal (Dick) School of Veterinary Studies and Roslin InstituteUniversity of EdinburghEdinburghEH25 9RGUK
- Cancer Research UK Edinburgh Centre and Division of Pathology Laboratories, Institute of Genetics and Molecular MedicineUniversity of EdinburghEdinburghEH4 2XUUK
| | - James Meehan
- Cancer Research UK Edinburgh Centre and Division of Pathology Laboratories, Institute of Genetics and Molecular MedicineUniversity of EdinburghEdinburghEH4 2XUUK
- Institute of Sensors, Signals and Systems, School of Engineering and Physical SciencesHeriot‐Watt UniversityEdinburghEH14 4ASUK
| | - Ewen O. Blair
- School of Engineering, Faraday BuildingEdinburghEH9 3JLUK
| | - Carol Ward
- The Royal (Dick) School of Veterinary Studies and Roslin InstituteUniversity of EdinburghEdinburghEH25 9RGUK
- Cancer Research UK Edinburgh Centre and Division of Pathology Laboratories, Institute of Genetics and Molecular MedicineUniversity of EdinburghEdinburghEH4 2XUUK
| | - Simon P. Langdon
- Cancer Research UK Edinburgh Centre and Division of Pathology Laboratories, Institute of Genetics and Molecular MedicineUniversity of EdinburghEdinburghEH4 2XUUK
| | - Linda R. Morrison
- The Royal (Dick) School of Veterinary Studies and Roslin InstituteUniversity of EdinburghEdinburghEH25 9RGUK
| | | | | | - Ian H. Kunkler
- Cancer Research UK Edinburgh Centre and Division of Pathology Laboratories, Institute of Genetics and Molecular MedicineUniversity of EdinburghEdinburghEH4 2XUUK
| | - Alan Murray
- School of Engineering, Faraday BuildingEdinburghEH9 3JLUK
| | - David Argyle
- The Royal (Dick) School of Veterinary Studies and Roslin InstituteUniversity of EdinburghEdinburghEH25 9RGUK
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50
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Liu D, García-López V, Gunasekera RS, Greer Nilewski L, Alemany LB, Aliyan A, Jin T, Wang G, Tour JM, Pal R. Near-Infrared Light Activates Molecular Nanomachines to Drill into and Kill Cells. ACS Nano 2019; 13:6813-6823. [PMID: 31117378 DOI: 10.1021/acsnano.9b01556] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Using two-photon excitation (2PE), molecular nanomachines (MNMs) are able to drill through cell membranes and kill the cells. This avoids the use of the more damaging ultraviolet light that has been used formerly to induce this nanomechanical cell-killing effect. Since 2PE is inherently confocal, enormous precision can be realized. The MNMs can be targeted to specific cell surfaces through peptide addends. Further, the efficacy was verified through a controlled opening of synthetic bilayer vesicles using the 2PE excitation of MNM that had been trapped within the vesicles.
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Affiliation(s)
| | | | | | | | | | | | - Tao Jin
- Department of Chemistry , North Carolina State University , Raleigh , North Carolina 27695-8204 , United States
| | - Gufeng Wang
- Department of Chemistry , North Carolina State University , Raleigh , North Carolina 27695-8204 , United States
| | | | - Robert Pal
- Department of Chemistry , Durham University , South Road , DH1 3LE Durham , United Kingdom
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