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Dalton E, Morris Z, Ayres N. Synthesis and characterization of sulfated-lactose polyurethane hydrogels. Polym Chem 2022. [DOI: 10.1039/d2py00227b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Polyurethanes (PUs) are widely used due to their durability, flexibility, and biocompatibility. PU hydrogels have been used in biomedical applications tissue engineering, synthetic extracellular matrices, and drug delivery. In this...
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2
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Weems AC, Arno MC, Yu W, Huckstepp RTR, Dove AP. 4D polycarbonates via stereolithography as scaffolds for soft tissue repair. Nat Commun 2021; 12:3771. [PMID: 34226548 PMCID: PMC8257657 DOI: 10.1038/s41467-021-23956-6] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2020] [Accepted: 05/13/2021] [Indexed: 11/13/2022] Open
Abstract
3D printing has emerged as one of the most promising tools to overcome the processing and morphological limitations of traditional tissue engineering scaffold design. However, there is a need for improved minimally invasive, void-filling materials to provide mechanical support, biocompatibility, and surface erosion characteristics to ensure consistent tissue support during the healing process. Herein, soft, elastomeric aliphatic polycarbonate-based materials were designed to undergo photopolymerization into supportive soft tissue engineering scaffolds. The 4D nature of the printed scaffolds is manifested in their shape memory properties, which allows them to fill model soft tissue voids without deforming the surrounding material. In vivo, adipocyte lobules were found to infiltrate the surface-eroding scaffold within 2 months, and neovascularization was observed over the same time. Notably, reduced collagen capsule thickness indicates that these scaffolds are highly promising for adipose tissue engineering and repair. Shape memory scaffolds are needed for minimally invasive tissue repair and void filling. Here the authors report on the development of 4D printed polycarbonate-based scaffolds with surface degradation properties which fill voids without deforming tissue and allow for tissue ingrowth with reduced immune response.
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Affiliation(s)
- Andrew C Weems
- School of Chemistry, University of Birmingham, Birmingham, UK.
| | - Maria C Arno
- School of Chemistry, University of Birmingham, Birmingham, UK
| | - Wei Yu
- School of Chemistry, University of Birmingham, Birmingham, UK
| | | | - Andrew P Dove
- School of Chemistry, University of Birmingham, Birmingham, UK.
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3
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King O, Constant E, Weems AC. Shape Memory Poly(β-hydroxythioether) Foams for Oil Remediation in Aquatic Environments. ACS APPLIED MATERIALS & INTERFACES 2021; 13:20641-20652. [PMID: 33872493 DOI: 10.1021/acsami.1c02630] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Shape memory poly(β-hydroxythioether) foams were produced using organobase catalyzed reactions between epoxide and thiol monomers, allowing for the rapid formation of porous media within approximately 5 min, confirmed using both rheology and physical foam blowing. The porous materials possess ultralow densities (0.022 g × cm-3) and gel fractions of approximately 93%. Thermomechanical characterizations of the materials revealed glass transition temperatures tunable from approximately 50 to 100 °C, elastic moduli of approximately 2 kPa, and complete strain recovery upon heating of the sample above its glass transition temperature. The foams were characterized for their ability to take up oil from an aqueous multilayered ideal environment, revealing more than 2000% mass of oil (relative to the foam mass) could be collected. Importantly, while post-fabrication functionalization was possible with isocyanate chemistry followed by addition of hexadecanethiol or 3,3-bis(hexadecylthio)propan-1-ol, the oil collection efficiency of the system was not significantly enhanced, indicating that these materials, as porous media, possess unique attributes that make them appealing for environmental remediation without the need for costly modifications or manipulations.
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Affiliation(s)
- Olivia King
- Biomedical Engineering, Russ College of Engineering, Ohio University, Athens, Ohio 45701, United States
| | - Eric Constant
- Biomedical Engineering, Russ College of Engineering, Ohio University, Athens, Ohio 45701, United States
| | - Andrew C Weems
- Biomedical Engineering, Russ College of Engineering, Ohio University, Athens, Ohio 45701, United States
- Department of Mechanical Engineering; Translational Biosciences; Molecular and Chemical Biology; Orthopedic and Musculoskeletal Neurological Institute, Ohio University, Athens, Ohio 45701, United States
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Steindl P, Decker H, Retzl B, Jiang Q, Menner A, Bismarck A. Emulsion-templated flexible epoxy foams. POLYMER 2021. [DOI: 10.1016/j.polymer.2021.123380] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Zhang F, Xia Y, Liu Y, Leng J. Nano/microstructures of shape memory polymers: from materials to applications. NANOSCALE HORIZONS 2020; 5:1155-1173. [PMID: 32567643 DOI: 10.1039/d0nh00246a] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Shape memory polymers (SMPs) are macromolecules in which linear chains and crosslinking points play a key role in providing a shape memory effect. As smart polymers, SMPs have the ability to change shape, stiffness, size, and structure when exposed to external stimuli, leading to potential uses for SMPs throughout our daily lives in a diverse range of areas including the aerospace and automotive industries, robotics, biomedical engineering, smart textiles, and tactile devices. SMPs can be fabricated in many forms and sizes from the nanoscale to the macroscale, including nanofibers, nanoparticles, thin films, microfoams, and bulk devices. The introduction of nanostructure into SMPs can result in enhanced mechanical properties, unique structural color, specific surface area, and multiple functions. It is necessary to enhance the current understanding of the various nano/microstructures of SMPs and their fabrication, and to find suitable approaches for constructing SMP-based nano/microstructures for different applications. In this review, we summarize the current state of different SMP nano/microstructures, fabrication techniques, and applications, and give suggestions for their future development.
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Affiliation(s)
- Fenghua Zhang
- National Key Laboratory of Science and Technology on Advanced Composites in Special Enviroments, Harbin Institute of Technology (HIT), Harbin 150080, P. R. China.
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Weems AC, Pérez-Madrigal MM, Arno MC, Dove AP. 3D Printing for the Clinic: Examining Contemporary Polymeric Biomaterials and Their Clinical Utility. Biomacromolecules 2020; 21:1037-1059. [PMID: 32058702 DOI: 10.1021/acs.biomac.9b01539] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The advent of additive manufacturing offered the potential to revolutionize clinical medicine, particularly with patient-specific implants across a range of tissue types. However, to date, there are very few examples of polymers being used for additive processes in clinical settings. The state of the art with regards to 3D printable polymeric materials being exploited to produce novel clinically relevant implants is discussed here. We focus on the recent advances in the development of implantable, polymeric medical devices and tissue scaffolds without diverging extensively into bioprinting. By introducing the major 3D printing techniques along with current advancements in biomaterials, we hope to provide insight into how these fields may continue to advance while simultaneously reviewing the ongoing work in the field.
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Affiliation(s)
- Andrew C Weems
- School of Chemistry, University of Birmingham, Birmingham B15 2TT, U.K
| | | | - Maria C Arno
- School of Chemistry, University of Birmingham, Birmingham B15 2TT, U.K
| | - Andrew P Dove
- School of Chemistry, University of Birmingham, Birmingham B15 2TT, U.K
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Bonattini VH, Paula LAL, Jesus NAM, Tavares DC, Nicolella HD, Magalhães LG, Molina EF. One‐step formation of polyurea gel as a multifunctional approach for biological and environmental applications. POLYM INT 2020. [DOI: 10.1002/pi.5978] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
| | - Lucas AL Paula
- Department of ChemistryUniversidade de Franca Franca Brazil
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Liu T, Li J, Wu X, Zhang S, Lu Z, Li G, Li J, Chen S. Transferrin-targeting redox hyperbranched poly(amido amine)-functionalized graphene oxide for sensitized chemotherapy combined with gene therapy to nasopharyngeal carcinoma. Drug Deliv 2019; 26:744-755. [PMID: 31340676 PMCID: PMC6711081 DOI: 10.1080/10717544.2019.1642421] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2019] [Revised: 07/03/2019] [Accepted: 07/08/2019] [Indexed: 02/08/2023] Open
Abstract
A drug and gene co-delivery system with chemotherapeutic sensibilization was prepared and used for nasopharyngeal carcinoma therapy. For this purpose, the graphene oxide (GO) was conjugated with the redox hyperbranched poly(amido amine) (HPAA) and then the targeting molecule, transferrin (Tf), was also conjugated. The obtained Tf-HPAA-GO could co-deliver docetaxel (DOC) and MMP-9 shRNA plasmid (pMMP-9) effectively and showed the targeting effect to HNE-1 cells. The co-delivery system showed the effective drug and gene delivery ability with high cytotoxicity and gene transfection efficiency. Besides that, Tf-HPAA-GO/DOC also showed the chemotherapeutic sensibilization effect, the formulation containing HPAA segments showed much higher cytotoxicity than free DOC. Benefiting from the sensibilization effect and DOC/pMMP-9 co-delivery strategy, this Tf-HPAA-GO/DOC/pMMP-9 co-delivery system exhibited the significantly improved therapeutic efficacy to HNE-1 tumor in a combined manner which was confirmed by in vitro and in vivo assays. This strategy provided an easily delivery system combining the drug/gene co-delivery, chemotherapeutic sensibilization, and targeting into one single platform, which showed a promising application in cancer therapy.
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Affiliation(s)
- Tao Liu
- Department of Otolaryngology-Head and Neck Surgery, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China
| | - Jingzhen Li
- Department of Nephrology, Ningbo Yinzhou Second Hospital, Ningbo, China
| | - Xidong Wu
- Department of Pharmacology, Jiangxi Testing Center of Medical Instruments, Nanchang, China
| | - Siyi Zhang
- Department of Otolaryngology-Head and Neck Surgery, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China
| | - Zhongming Lu
- Department of Otolaryngology-Head and Neck Surgery, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China
| | - Guanxue Li
- Department of Pediatric Center, Zhujiang Hospital of Southern Medical University, Guangzhou, China
| | - Junzheng Li
- Department of Otolaryngology-Head and Neck Surgery, The Affiliated Dongguan Hospital of Jinan University, Dongguan, China
| | - Shaohua Chen
- Department of Otolaryngology-Head and Neck Surgery, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China
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Zhu X, Wang Z, Liu J, Min X, Wang T, Fan X. A New Strategy to Synthesize α,ω‐Dihydroxy Multiblock Copolymers via [CpRu(CH
3
CN)
3
]PF
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/Quinaldic Acid Catalyst. Macromol Rapid Commun 2019; 40:e1900135. [DOI: 10.1002/marc.201900135] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2019] [Revised: 04/16/2019] [Indexed: 12/25/2022]
Affiliation(s)
- Xiuzhong Zhu
- Ministry of Education and Shaanxi Key Laboratory of Macromolecular Science and TechnologyThe Key Laboratory of Space Applied Physics and ChemistrySchool of ScienceNorthwestern Polytechnical University Xi’an 710072 P. R. China
| | - Zichao Wang
- Ministry of Education and Shaanxi Key Laboratory of Macromolecular Science and TechnologyThe Key Laboratory of Space Applied Physics and ChemistrySchool of ScienceNorthwestern Polytechnical University Xi’an 710072 P. R. China
| | - Jie Liu
- Ministry of Education and Shaanxi Key Laboratory of Macromolecular Science and TechnologyThe Key Laboratory of Space Applied Physics and ChemistrySchool of ScienceNorthwestern Polytechnical University Xi’an 710072 P. R. China
| | - Xin Min
- Ministry of Education and Shaanxi Key Laboratory of Macromolecular Science and TechnologyThe Key Laboratory of Space Applied Physics and ChemistrySchool of ScienceNorthwestern Polytechnical University Xi’an 710072 P. R. China
| | - Tong Wang
- Ministry of Education and Shaanxi Key Laboratory of Macromolecular Science and TechnologyThe Key Laboratory of Space Applied Physics and ChemistrySchool of ScienceNorthwestern Polytechnical University Xi’an 710072 P. R. China
| | - Xiaodong Fan
- Ministry of Education and Shaanxi Key Laboratory of Macromolecular Science and TechnologyThe Key Laboratory of Space Applied Physics and ChemistrySchool of ScienceNorthwestern Polytechnical University Xi’an 710072 P. R. China
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Dalton E, Chai Q, Shaw MW, McKenzie TJ, Mullins ES, Ayres N. Hydrogel‐coated polyurethane/urea shape memory polymer foams. ACTA ACUST UNITED AC 2019. [DOI: 10.1002/pola.29398] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- Emily Dalton
- The Department of Chemistry The University of Cincinnati Cincinnati Ohio 45221
| | - Qinyuan Chai
- The Department of Chemistry The University of Cincinnati Cincinnati Ohio 45221
| | - Molly W. Shaw
- Cancer and Blood Diseases Institute, Cincinnati Children's Hospital Medical Center Cincinnati Ohio 45229
| | - Tucker J. McKenzie
- The Department of Chemistry The University of Cincinnati Cincinnati Ohio 45221
| | - Eric S. Mullins
- Cancer and Blood Diseases Institute, Cincinnati Children's Hospital Medical Center Cincinnati Ohio 45229
| | - Neil Ayres
- The Department of Chemistry The University of Cincinnati Cincinnati Ohio 45221
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Xu H, Budhlall BM. Gold nanorods or nanospheres? Role of particle shape on tuning the shape memory effect of semicrystalline poly(ε-caprolactone) networks. RSC Adv 2018; 8:29283-29294. [PMID: 35547987 PMCID: PMC9084440 DOI: 10.1039/c8ra06715e] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2018] [Accepted: 08/13/2018] [Indexed: 11/21/2022] Open
Abstract
In this study, modified poly(ε-caprolactone) (PCL) tri-block copolymers were successfully synthesized through ring opening polymerization. The nanocomposite films containing either colloidal gold nanorods (AuNRs) or gold nanospheres (AuNSs) in the polymer matrix were fabricated without chemical modification to realize light-responsive shape memory behaviors. The localized surface plasmon resonance of AuNPs was utilized by irradiating the selective wavelength of light to create a photothermal effect. The polymer microstructures were investigated by NMR, and the thermal properties of the polymer networks were studied by TGA and DSC. The addition of AuNPs did not change the melting temperature, (Tm) of the SMP. The AuNRs were fairly well dispersed within the PCL matrix as observed using SEM-EDAX analysis and as indicated from the uniform shape memory transitions of the SMP/AuNR nanocomposites. The shape memory behavior was quantitatively analyzed by cyclic thermomechanical tests using DMA. The laser-triggered shape memory properties of the nanocomposites were analyzed and the shape recovery process from a rectangular shaped film to a helical coil was demonstrated. The speed of SMP recovery was found to be dependent on the geometry and concentration of the AuNPs in the nanocomposite, as well as on the laser wavelength and intensity. Light-triggered shape memory actuation of polycaprolactone was achieved by using the surface plasmon induced photothermal effect of AuNPs. The light absorption wavelengths were tuned without compromising the chemistry and properties of the polymers.![]()
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Affiliation(s)
- Haikun Xu
- Department of Plastics Engineering and Nanomanufacturing Center, University of Massachusetts Lowell MA 01854 USA
| | - Bridgette Maria Budhlall
- Department of Plastics Engineering and Nanomanufacturing Center, University of Massachusetts Lowell MA 01854 USA
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Pan L, Xiong Z, Song L, Ban J, Lu S. Synthesis and characterization of sisal fibre polyurethane network cross-linked with triple-shape memory properties. NEW J CHEM 2018. [DOI: 10.1039/c8nj00181b] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In this paper, a thermo-responsive network shape-memory polymer (SMP) which has high elasticity, triple shape-memory properties and rapid shape recovery effects was reported.
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Affiliation(s)
- Lulu Pan
- Key Laboratory of New Processing Technology for Nonferrous Metals and Materials
- Ministry of Education
- School of Material Science and Engineering
- Guilin University of Technology
- Guilin
| | - Zhongqiang Xiong
- Key Laboratory of New Processing Technology for Nonferrous Metals and Materials
- Ministry of Education
- School of Material Science and Engineering
- Guilin University of Technology
- Guilin
| | - Laifu Song
- Key Laboratory of New Processing Technology for Nonferrous Metals and Materials
- Ministry of Education
- School of Material Science and Engineering
- Guilin University of Technology
- Guilin
| | - Jianfeng Ban
- College of Chemical Engineering
- Guangdong University of Petrochemical Technology
- Maoming
- China
| | - Shaorong Lu
- Key Laboratory of New Processing Technology for Nonferrous Metals and Materials
- Ministry of Education
- School of Material Science and Engineering
- Guilin University of Technology
- Guilin
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14
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Liu T, Chen S, Zhang S, Wu X, Wu P, Miao B, Cai X. Transferrin-functionalized chitosan-graft-poly(l-lysine) dendrons as a high-efficiency gene delivery carrier for nasopharyngeal carcinoma therapy. J Mater Chem B 2018; 6:4314-4325. [PMID: 32254507 DOI: 10.1039/c8tb00489g] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The co-polymer of transferrin-conjugated chitosan-graft-poly(l-lysine) dendrons was used to deliver the MMP-9 shRNA plasmid effectively for nasopharyngeal carcinoma gene therapy.
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Affiliation(s)
- Tao Liu
- Department of Otolaryngology-Head and Neck Surgery
- Guangdong General Hospital
- Guangdong Academy of Medical Sciences
- Guangzhou 510080
- China
| | - Shaohua Chen
- Department of Otolaryngology-Head and Neck Surgery
- Guangdong General Hospital
- Guangdong Academy of Medical Sciences
- Guangzhou 510080
- China
| | - Siyi Zhang
- Department of Otolaryngology-Head and Neck Surgery
- Guangdong General Hospital
- Guangdong Academy of Medical Sciences
- Guangzhou 510080
- China
| | - Xidong Wu
- Department of Pharmacology
- Jiangxi Testing Center of Medical Instruments
- Nanchang 330029
- China
| | - Peina Wu
- Department of Otolaryngology-Head and Neck Surgery
- Guangdong General Hospital
- Guangdong Academy of Medical Sciences
- Guangzhou 510080
- China
| | - Beiping Miao
- Department of Otolaryngology
- the First Affiliated Hospital of Shenzhen University
- Shenzhen Second People Hospital
- Shenzhen 518035
- China
| | - Xiang Cai
- Department of Light Chemical Engineering
- Guangdong Polytechnic
- Foshan 528041
- China
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Cai S, Sun YC, Ren J, Naguib HE. Toward the low actuation temperature of flexible shape memory polymer composites with room temperature deformability via induced plasticizing effect. J Mater Chem B 2017; 5:8845-8853. [DOI: 10.1039/c7tb02068f] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Room temperature deformable PLA/TPU/PEG blends demostrate superior shape memory properties under low temperature environments due to the induced plasticizing effect.
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Affiliation(s)
- Shenyang Cai
- Department of Mechanical and Industrial Engineering
- University of Toronto
- Toronto
- Canada
- Key Laboratory of Advanced Civil Engineering Materials
| | - Yu-Chen Sun
- Department of Mechanical and Industrial Engineering
- University of Toronto
- Toronto
- Canada
- Department of Materials Science and Engineering
| | - Jie Ren
- Key Laboratory of Advanced Civil Engineering Materials
- Ministry of Education
- School of Material Science and Engineering
- Tongji University
- Shanghai 201804
| | - Hani E. Naguib
- Department of Mechanical and Industrial Engineering
- University of Toronto
- Toronto
- Canada
- Department of Materials Science and Engineering
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