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Pawelec KM, Hix JML, Troia A, MacRenaris KW, Kiupel M, Shapiro EM. In vivo micro-computed tomography evaluation of radiopaque, polymeric device degradation in normal and inflammatory environments. Acta Biomater 2024; 181:222-234. [PMID: 38648912 PMCID: PMC11144086 DOI: 10.1016/j.actbio.2024.04.031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2024] [Revised: 03/26/2024] [Accepted: 04/18/2024] [Indexed: 04/25/2024]
Abstract
Polymeric biomedical implants are an important clinical tool, but degradation remains difficult to determine post-implantation. Computed tomography (CT) could be a powerful tool for device monitoring, but polymers require incorporation of radiopaque contrast agents to be distinguishable from tissue. In addition, immune response to radiopaque devices must be characterized as it modulates device function. Radiopaque devices and films were produced by incorporating 0-20 wt% TaOx nanoparticles into polymers: polycaprolactone (PCL) and poly(lactide-co-glycolide) (PLGA). In vitro inflammatory responses of mouse bone marrow-derived macrophages to polymer matrix incorporating TaOx nanoparticles was determined by monitoring cytokine secretion. Nanoparticle addition stimulated a slight inflammatory reaction, increasing TNFα secretion, mediated by changes in polymer matrix properties. Subsequently, devices (PLGA 50:50 + 20 wt% TaOx) were implanted subcutaneously in a mouse model of chronic inflammation, that featured a sustained increase in inflammatory response local to the implant site over 12 weeks. No changes to device degradation rates or foreign body response were noted between a normal and chronically stimulated inflammatory environment. Serial CT device monitoring post-implantation provided a detailed timeline of device collapse, with no rapid, spontaneous release of nanoparticles that occluded matrix visualization. Importantly, repeat CT sessions did not ablate the immune system or alter degradation kinetics. Thus, polymer devices incorporating radiopaque nanoparticles can be used for in situ monitoring and be readily combined with other medical imaging techniques, for a dynamic view biomaterial and tissue interactions. STATEMENT OF SIGNIFICANCE: A growing number of implantable devices are in use in the clinic, exposing patients to inherent risks of implant movement, collapse, and infection. The ability to monitor implanted devices would enable faster diagnosis of failure and open the door for personalized rehabilitation therapies - both of which could vastly improve patient outcomes. Unfortunately, polymeric materials which make up most biomedical devices are not radiologically distinguishable from tissue post-implantation. The introduction of radiopaque nanoparticles into polymers allows for serial monitoring via computed tomography, without affecting device degradation. Here we demonstrate for the first time that nanoparticles do not undergo burst release from devices post-implantation and that inflammatory responses - a key determinant of device function in vivo - are also unaffected by nanoparticle addition.
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Affiliation(s)
- Kendell M Pawelec
- Department of Radiology, Michigan State University, East Lansing, MI 48824, USA; Institute for Quantitative Health Sciences and Engineering, Michigan State University, East Lansing, MI 48824, USA.
| | - Jeremy M L Hix
- Department of Radiology, Michigan State University, East Lansing, MI 48824, USA; Institute for Quantitative Health Sciences and Engineering, Michigan State University, East Lansing, MI 48824, USA
| | - Arianna Troia
- Department of Radiology, Michigan State University, East Lansing, MI 48824, USA
| | - Keith W MacRenaris
- Quantitative Bio Element Analysis and Mapping (QBEAM) Center, Michigan State University, East Lansing, MI 48824, USA
| | - Matti Kiupel
- Department of Pathobiology and Diagnostic Investigation, Michigan State University, East Lansing, MI 48824, USA
| | - Erik M Shapiro
- Department of Radiology, Michigan State University, East Lansing, MI 48824, USA; Institute for Quantitative Health Sciences and Engineering, Michigan State University, East Lansing, MI 48824, USA; Department of Physiology, Michigan State University, East Lansing, MI 48824, USA; Department of Chemical Engineering and Material Science, Michigan State University, East Lansing, MI 48824, USA; Department of Biomedical Engineering, Michigan State University, East Lansing, MI 48824, USA.
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2
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Jiang MC, Fang ZL, Zhang JY, Ma W, Liao LF, Yu CY, Wei H. A fully biodegradable spherical nucleic acid nanoplatform for self-codelivery of doxorubicin and miR122 for innate and adaptive immunity activation. Acta Biomater 2024; 180:407-422. [PMID: 38614414 DOI: 10.1016/j.actbio.2024.04.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2024] [Revised: 03/12/2024] [Accepted: 04/07/2024] [Indexed: 04/15/2024]
Abstract
Facile construction of a fully biodegradable spherical nucleic acid (SNA) nanoplatform is highly desirable for clinical translations but remains rarely explored. We developed herein the first polycarbonate-based biodegradable SNA nanoplatform for self-codelivery of a chemotherapeutic drug, doxorubicin (DOX), and a human liver-specific miR122 for synergistic chemo-gene therapy of hepatocellular carcinoma (HCC). Ring-opening polymerization (ROP) of a carbonate monomer leads to a well-defined polycarbonate backbone for subsequent DOX conjugation to the pendant side chains via acidic pH-cleavage Schiff base links and miR122 incorporation to the chain termini via click coupling, affording an amphiphilic polycarbonate-DOX-miR122 conjugate, PBis-Mpa30-DOX-miR122 that can self-assemble into stabilized SNA. Besides the desired biodegradability, another notable merit of this nanoplatform is the use of miR122 not only for gene therapy but also for enhanced innate immune response. Together with the ICD-triggering effect of DOX, PBis-Mpa30-DOX-miR122 SNA-mediated DOX and miR122 codelivery leads to synergistic immunogenicity enhancement, resulting in tumor growth inhibition value (TGI) of 98.1 % significantly higher than those of the groups treated with only drug or gene in a Hepa1-6-tumor-bearing mice model. Overall, this study develops a useful strategy toward biodegradable SNA construction, and presents a drug and gene-based self-codelivery SNA with synergistic immunogenicity enhancement for efficient HCC therapy. STATEMENT OF SIGNIFICANCE: Facile construction of a fully biodegradable SNA nanoplatform is useful for in vivo applications but remains relatively unexplored likely due to the synthetic challenge. We report herein construction of a polycarbonate-based SNA nanoplatform for co-delivering a chemotherapeutic drug, DOX, and a human liver-specific miR-122 for synergistic HCC treatment. In addition to the desired biodegradability properties, this SNA nanoplatform integrates DOX-triggered ICD and miR-122-enhanced innate immunity for simultaneously activating adaptive and innate immunities, which leads to potent antitumor efficiency with a TGI value of 98.1 % in a Hepa1-6-tumor-bearing mice model.
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Affiliation(s)
- Ming-Chao Jiang
- Hengyang Medical School, School of Resources Environment and Safety Engineering, Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, School of Pharmaceutical Science, University of South China, Hengyang 421001, China
| | - Zhou-Long Fang
- Hengyang Medical School, School of Resources Environment and Safety Engineering, Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, School of Pharmaceutical Science, University of South China, Hengyang 421001, China
| | - Jin-Yan Zhang
- Hengyang Medical School, School of Resources Environment and Safety Engineering, Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, School of Pharmaceutical Science, University of South China, Hengyang 421001, China
| | - Wei Ma
- Hengyang Medical School, School of Resources Environment and Safety Engineering, Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, School of Pharmaceutical Science, University of South China, Hengyang 421001, China
| | - Luan-Feng Liao
- Hengyang Medical School, School of Resources Environment and Safety Engineering, Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, School of Pharmaceutical Science, University of South China, Hengyang 421001, China
| | - Cui-Yun Yu
- Affiliated Hospital of Hunan Academy of Chinese Medicine Hunan, Academy of Chinese Medicine, Changsha 410013, China; Hengyang Medical School, School of Resources Environment and Safety Engineering, Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, School of Pharmaceutical Science, University of South China, Hengyang 421001, China.
| | - Hua Wei
- Hengyang Medical School, School of Resources Environment and Safety Engineering, Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, School of Pharmaceutical Science, University of South China, Hengyang 421001, China.
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Pawelec KM, Hix JML, Troia A, Kiupel M, Shapiro E. In vivo Biomedical Imaging of Immune Tolerant, Radiopaque Nanoparticle-Embedded Polymeric Device Degradation. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.10.26.564238. [PMID: 37961412 PMCID: PMC10634892 DOI: 10.1101/2023.10.26.564238] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2023]
Abstract
Biomedical implants remain an important clinical tool for restoring patient mobility and quality of life after trauma. While polymers are often used for devices, their degradation profile remains difficult to determine post-implantation. CT monitoring could be a powerful tool for in situ monitoring of devices, but polymers require the introduction of radiopaque contrast agents, like nanoparticles, to be distinguishable from native tissue. As device function is mediated by the immune system, use of radiopaque nanoparticles for serial monitoring therefore requires a minimal impact on inflammatory response. Radiopaque polymer composites were produced by incorporating 0-20wt% TaOx nanoparticles into synthetic polymers: polycaprolactone (PCL) and poly(lactide-co-glycolide) (PLGA). In vitro inflammatory response to TaOx was determined by monitoring mouse bone marrow derived macrophages on composite films. Nanoparticle addition stimulated only a slight inflammatory reaction, namely increased TNFα secretion, mediated by changes to the polymer matrix properties. When devices (PLGA 50:50 + 20wt% TaOx) were implanted subcutaneously in a mouse model of chronic inflammation, no changes to device degradation were noted although macrophage number was increased over 12 weeks. Serial CT monitoring of devices post-implantation provided a detailed timeline of device structural collapse, with no burst release of the nanoparticles from the implant. Changes to the device were not significantly altered with monitoring, nor was the immune system ablated when checked via blood cell count and histology. Thus, polymer devices incorporating radiopaque TaOx NPs can be used for in situ CT monitoring, and can be readily combined with multiple medical imaging techniques, for a truly dynamic view biomaterials interaction with tissues throughout regeneration, paving the way for a more structured approach to biomedical device design.
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Affiliation(s)
- Kendell M Pawelec
- Department of Radiology, Michigan State University, East Lansing, MI 48823, USA
| | - Jeremy M L Hix
- Department of Radiology, Michigan State University, East Lansing, MI 48823, USA
- Institute for Quantitative Health Sciences and Engineering, Michigan State University, East Lansing, MI 48823, USA
| | - Arianna Troia
- Department of Radiology, Michigan State University, East Lansing, MI 48823, USA
| | - Matti Kiupel
- Department of Pathobiology and Diagnostic Investigation, Michigan State University, East Lansing, MI 48823, USA
| | - Erik Shapiro
- Department of Radiology, Michigan State University, East Lansing, MI 48823, USA
- Institute for Quantitative Health Sciences and Engineering, Michigan State University, East Lansing, MI 48823, USA
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Li W, Lin M, Wang C, Lu Y, Sui Y, Ni X, Guo J, Jiang M, Yang L, Cui H. In vitro enzymatic degradation of the PTMC/cross-linked PEGDA blends. Front Bioeng Biotechnol 2023; 11:1253221. [PMID: 37736328 PMCID: PMC10509478 DOI: 10.3389/fbioe.2023.1253221] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2023] [Accepted: 08/22/2023] [Indexed: 09/23/2023] Open
Abstract
Introduction: Poly(1,3-trimethylene carbonate) (PTMC) is a flexible amorphous polymer with good degradability and biocompatibility. The degradation of PTMC is critical for its application as a degradable polymer, more convenient and easy-to-control cross-linking strategies for preparing PTMC are required. Methods: The blends of poly(trimethylene carbonate) (PTMC) and cross-linked poly(ethylene glycol) diacrylate (PEGDA) were prepared by mixing photoactive PEGDA and PTMC and subsequently photopolymerizing the mixture with uv light. The physical properties and in vitro enzymatic degradation of the resultant PTMC/cross-linked PEGDA blends were investigated. Results: The results showed that the gel fraction of PTMC/cross-linked PEGDA blends increased while the swelling degree decreased with the content of PEGDA dosage. The results of in vitro enzymatic degradation confirmed that the degradation of PTMC/cross-linked PEGDA blends in the lipase solution occurred under the surface erosion mechanism, and the introduction of the uv cross-linked PEGDA significantly improved the resistance to lipase erosion of PTMC; the higher the cross-linking degree, the lower the mass loss. Discussion: The results indicated that the blends/cross-linking via PEGDA is a simple and effective strategy to tailor the degradation rate of PTMC.
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Affiliation(s)
- Wei Li
- Liaoning Research Institute of Family Planning, The Affiliated Reproductive Hospital of China Medical University, Shenyang, China
| | - Meina Lin
- Liaoning Research Institute of Family Planning, The Affiliated Reproductive Hospital of China Medical University, Shenyang, China
| | - Chenchao Wang
- Department of Plastic Surgery, First Hospital of China Medical University, Shenyang, China
| | - Yongping Lu
- Liaoning Research Institute of Family Planning, The Affiliated Reproductive Hospital of China Medical University, Shenyang, China
| | - Yu Sui
- Liaoning Research Institute of Family Planning, The Affiliated Reproductive Hospital of China Medical University, Shenyang, China
| | - Xiang Ni
- Liaoning Research Institute of Family Planning, The Affiliated Reproductive Hospital of China Medical University, Shenyang, China
| | - Jing Guo
- Liaoning Research Institute of Family Planning, The Affiliated Reproductive Hospital of China Medical University, Shenyang, China
| | - Miao Jiang
- Liaoning Research Institute of Family Planning, The Affiliated Reproductive Hospital of China Medical University, Shenyang, China
| | - Liqun Yang
- Liaoning Research Institute of Family Planning, The Affiliated Reproductive Hospital of China Medical University, Shenyang, China
| | - Hong Cui
- Department of Obstetrics and Gynecology, Shengjing Hospital of China Medical University, Shenyang, China
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5
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Wu L, Wang Y, Zhao X, Mao H, Gu Z. Investigating the Biodegradation Mechanism of Poly(trimethylene carbonate): Macrophage-Mediated Erosion by Secreting Lipase. Biomacromolecules 2023; 24:921-928. [PMID: 36644840 DOI: 10.1021/acs.biomac.2c01350] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
Poly(trimethylene carbonate) (PTMC), as one of the representatives of biodegradable aliphatic polycarbonates, has been found to degrade in vivo via surface erosion. This unique degradation behavior and the resulting nonacidic products make it more competitive with aliphatic polyesters (e.g., polylactide) in clinical practice. However, this surface degradation mechanism is complicated and not fully understood to date despite the findings that several reactive oxygen species and enzymes can specifically degrade PTMC in vitro. Herein, the biodegradation mechanism of PTMC was investigated by using possible degradation factors, distinct cell lines, and the inhibitors of these factors. The results demonstrate that PTMC undergoes a specific macrophage-mediated erosion. Macrophages tend to fuse into giant cells and elicit a typical inflammatory response by releasing proinflammatory cytokines. In addition, macrophages are suggested to primarily secrete enzymes (lipase specifically) to erode the PTMC bulk extracellularly as inhibiting their activity effectively prevented this eroding process. The clarification of the biodegradation mechanism in this work suggests that the degradation of PTMC highly depends on the foreign body response. Thus, it reminds the researchers to consider the effect of the microenvironment on the degradation and drug release of PTMC-based implantation devices and localized drug delivery systems.
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Affiliation(s)
- Lihuang Wu
- Research Institute for Biomaterials, Tech Institute for Advanced Materials, College of Materials Science and Engineering, Jiangsu Collaborative Innovation Center for Advanced Inorganic Function Composites, Suqian Advanced Materials Industry Technology Innovation Center, Nanjing Tech University, Nanjing 211816, China
| | - Yuqi Wang
- Research Institute for Biomaterials, Tech Institute for Advanced Materials, College of Materials Science and Engineering, Jiangsu Collaborative Innovation Center for Advanced Inorganic Function Composites, Suqian Advanced Materials Industry Technology Innovation Center, Nanjing Tech University, Nanjing 211816, China
| | - Xinyue Zhao
- Research Institute for Biomaterials, Tech Institute for Advanced Materials, College of Materials Science and Engineering, Jiangsu Collaborative Innovation Center for Advanced Inorganic Function Composites, Suqian Advanced Materials Industry Technology Innovation Center, Nanjing Tech University, Nanjing 211816, China
| | - Hongli Mao
- Research Institute for Biomaterials, Tech Institute for Advanced Materials, College of Materials Science and Engineering, Jiangsu Collaborative Innovation Center for Advanced Inorganic Function Composites, Suqian Advanced Materials Industry Technology Innovation Center, Nanjing Tech University, Nanjing 211816, China.,NJTech-BARTY Joint Research Center for Innovative Medical Technology, Nanjing Tech University, Nanjing 210000, China
| | - Zhongwei Gu
- Research Institute for Biomaterials, Tech Institute for Advanced Materials, College of Materials Science and Engineering, Jiangsu Collaborative Innovation Center for Advanced Inorganic Function Composites, Suqian Advanced Materials Industry Technology Innovation Center, Nanjing Tech University, Nanjing 211816, China.,NJTech-BARTY Joint Research Center for Innovative Medical Technology, Nanjing Tech University, Nanjing 210000, China
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6
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Graul LM, Horn SJ, Nash LD, Cheung TB, Clubb FJ, Maitland DJ. Image-Based Evaluation of In Vivo Degradation for Shape-Memory Polymer Polyurethane Foam. Polymers (Basel) 2022; 14:4122. [PMID: 36236069 PMCID: PMC9571375 DOI: 10.3390/polym14194122] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2022] [Revised: 09/09/2022] [Accepted: 09/12/2022] [Indexed: 11/06/2022] Open
Abstract
Shape-memory polymer (SMP) polyurethane foams have been applied as embolic devices and implanted in multiple animal models. These materials are oxidatively degradable and it is critical to quantify and characterize the degradation for biocompatibility assessments. An image-based method using high-resolution and magnification scans of histology sections was used to estimate the mass loss of the peripheral and neurovascular embolization devices (PED, NED). Detailed analysis of foam microarchitecture (i.e., struts and membranes) was used to estimate total relative mass loss over time. PED foams implanted in porcine arteries showed a degradation rate of ~0.11% per day as evaluated at 30-, 60-, and 90-day explant timepoints. NED foams implanted in rabbit carotid elastase aneurysms showed a markedly faster rate of degradation at ~1.01% per day, with a clear difference in overall degradation between 30- and 90-day explants. Overall, membranes degraded faster than the struts. NEDs use more hydrophobic foam with a smaller pore size (~150-400 μm) compared to PED foams (~800-1200 μm). Previous in vitro studies indicated differences in the degradation of the two polymer systems, but not to the magnitude seen in vivo. Implant location, animal species, and local tissue health are among the hypothesized reasons for different degradation rates.
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Affiliation(s)
- Lance M. Graul
- Department of Biomedical Engineering, Texas A&M University, College Station, TX 77843, USA
| | - Staci J. Horn
- Department of Biomedical Engineering, Texas A&M University, College Station, TX 77843, USA
- Department of Veterinary Pathobiology, Texas A&M University, College Station, TX 77843, USA
| | | | - Thomas B. Cheung
- Department of Biomedical Engineering, Texas A&M University, College Station, TX 77843, USA
| | - Fred J. Clubb
- Department of Biomedical Engineering, Texas A&M University, College Station, TX 77843, USA
- Department of Veterinary Pathobiology, Texas A&M University, College Station, TX 77843, USA
| | - Duncan J. Maitland
- Department of Biomedical Engineering, Texas A&M University, College Station, TX 77843, USA
- Shape Memory Medical Inc., Santa Clara, CA 95054, USA
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7
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Biomedical Applications of Polyhydroxyalkanoate in Tissue Engineering. Polymers (Basel) 2022; 14:polym14112141. [PMID: 35683815 PMCID: PMC9182786 DOI: 10.3390/polym14112141] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2022] [Revised: 05/19/2022] [Accepted: 05/23/2022] [Indexed: 02/06/2023] Open
Abstract
Tissue engineering technology aids in the regeneration of new tissue to replace damaged or wounded tissue. Three-dimensional biodegradable and porous scaffolds are often utilized in this area to mimic the structure and function of the extracellular matrix. Scaffold material and design are significant areas of biomaterial research and the most favorable material for seeding of in vitro and in vivo cells. Polyhydroxyalkanoates (PHAs) are biopolyesters (thermoplastic) that are appropriate for this application due to their biodegradability, thermo-processability, enhanced biocompatibility, mechanical properties, non-toxicity, and environmental origin. Additionally, they offer enormous potential for modification through biological, chemical and physical alteration, including blending with various other materials. PHAs are produced by bacterial fermentation under nutrient-limiting circumstances and have been reported to offer new perspectives for devices in biological applications. The present review discusses PHAs in the applications of conventional medical devices, especially for soft tissue (sutures, wound dressings, cardiac patches and blood vessels) and hard tissue (bone and cartilage scaffolds) regeneration applications. The paper also addresses a recent advance highlighting the usage of PHAs in implantable devices, such as heart valves, stents, nerve guidance conduits and nanoparticles, including drug delivery. This review summarizes the in vivo and in vitro biodegradability of PHAs and conducts an overview of current scientific research and achievements in the development of PHAs in the biomedical sector. In the future, PHAs may replace synthetic plastics as the material of choice for medical researchers and practitioners.
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8
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Bonartsev A, Voinova V, Volkov A, Muraev A, Boyko E, Venediktov A, Didenko N, Dolgalev A. Scaffolds Based on Poly(3-Hydroxybutyrate) and Its Copolymers for Bone Tissue Engineering (Review). Sovrem Tekhnologii Med 2022; 14:78-90. [PMID: 37181830 PMCID: PMC10171059 DOI: 10.17691/stm2022.14.5.07] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2022] [Indexed: 05/16/2023] Open
Abstract
Biodegradable and biocompatible polymers are actively used in tissue engineering to manufacture scaffolds. Biomedical properties of polymer scaffolds depend on the physical and chemical characteristics and biodegradation kinetics of the polymer material, 3D microstructure and topography of the scaffold surface, as well as availability of minerals, medicinal agents, and growth factors loaded into the scaffold. However, in addition to the above, the intrinsic biological activity of the polymer and its biodegradation products can also become evident. This review provides studies demonstrating that scaffolds made of poly(3-hydroxybutyrate) (PHB) and its copolymers have their own biological activity, and namely, osteoinductive properties. PHB can induce differentiation of mesenchymal stem cells in the osteogenic direction in vitro and stimulates bone tissue regeneration during the simulation of critical and non-critical bone defects in vivo.
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Affiliation(s)
- A.P. Bonartsev
- Associate Professor, Department of Bioengineering, Faculty of Biology; Lomonosov Moscow State University, 1–12 Leninskiye Gory, Moscow, 119234, Russia
- Corresponding author: Anton P. Bonartsev, e-mail:
| | - V.V. Voinova
- Senior Researcher, Department of Biochemistry, Faculty of Biology; Lomonosov Moscow State University, 1–12 Leninskiye Gory, Moscow, 119234, Russia
| | - A.V. Volkov
- Senior Researcher; N.N. Priorov National Medical Research Center of Traumatology and Orthopedics, 10 Priorova St., Moscow, 127299, Russia; Associate Professor, Department of Pathological Anatomy, Medical Institute; Peoples’ Friendship University of Russia, 6 Miklukho-Maklaya St., Moscow, 117198, Russia
| | - A.A. Muraev
- Professor, Department of Maxillofacial Surgery and Surgical Dentistry; Peoples’ Friendship University of Russia, 6 Miklukho-Maklaya St., Moscow, 117198, Russia
| | - E.M. Boyko
- Teacher, Essentuki Branch; Stavropol State Medical University, 310 Mira St., Stavropol, 355017, Russia
| | - A.A. Venediktov
- Director; Cardioplant LLC, 1B Tsentralnaya St., Bldg. 2, Penza, 440004, Russia
| | - N.N. Didenko
- Assistant, Department of Pathological Physiology; Stavropol State Medical University, 310 Mira St., Stavropol, 355017, Russia
| | - A.A. Dolgalev
- Associate Professor, Professor, Department of General and Pediatric Dentistry; Stavropol State Medical University, 310 Mira St., Stavropol, 355017, Russia; Head of the Center for Innovation and Technology Transfer of the Research and Innovation Association; Stavropol State Medical University, 310 Mira St., Stavropol, 355017, Russia
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9
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Amsden B. In Vivo Degradation Mechanisms of Aliphatic Polycarbonates and Functionalized Aliphatic Polycarbonates. Macromol Biosci 2021; 21:e2100085. [PMID: 33893715 DOI: 10.1002/mabi.202100085] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2021] [Revised: 03/29/2021] [Indexed: 11/06/2022]
Abstract
Aliphatic polycarbonates (APCs) have been studied for decades but have not been as utilized as aliphatic polyesters in biomaterial applications such as drug delivery and tissue engineering. With the recognition that functionalized aliphatic polymers can be readily synthesized, increased attention is being paid to these materials. A frequently provided reason for utilizing these polymers is that they degrade to form diols and carbon dioxide. However, depending on the structure and molecular weight of the APC, degradation may not occur. In this review, the mechanisms by which APCs and functionalized APCs have been found to degrade in vivo are examined with the objective of providing guidance in the continued development of these polymers as biomaterials.
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Affiliation(s)
- Brian Amsden
- Department of Chemical Engineering, Queen's University, Kingston, K7L 3N6, Canada
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10
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Mohajeri S, Amsden BG. In Vivo Degradation Mechanism and Biocompatibility of a Biodegradable Aliphatic Polycarbonate: Poly(Trimethylene Carbonate- co-5-Hydroxy Trimethylene Carbonate). ACS APPLIED BIO MATERIALS 2021; 4:3686-3696. [PMID: 35014453 DOI: 10.1021/acsabm.1c00160] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A recently developed viscous liquid aliphatic polycarbonate, poly(trimethylene carbonate-co-5-hydroxy trimethylene carbonate), has advantageous properties for the delivery of acid-sensitive drugs such as proteins and peptides. This copolymer degrades in vitro via an alkaline-catalyzed intramolecular cyclization reaction yielding oligo (trimethylene carbonate), glycerol, and carbon dioxide, but its in vivo degradation mechanisms are presently unknown. The in vivo degradation mechanism and tissue response to this copolymer were investigated following subcutaneous implantation in Wistar rats. The molecular weight and composition of the copolymer varied in the same manner following subcutaneous implantation as observed in vitro. These findings suggest that the copolymer also degraded in vivo principally via intramolecular cyclization. The tissue response in terms of the inflammatory zone cell density, fibrous capsule thickness, and macrophage response was intermediate to that of two clinically used biodegradable sutures, Vicryl and Monocryl, indicating that the copolymer can be considered biotolerable. Collectively, the data show that further development of this copolymer as a drug delivery material is warranted.
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Affiliation(s)
- Sara Mohajeri
- Department of Chemical Engineering, Queen's University, Kingston, Ontario K7L 3N6, Canada.,Human Mobility Research Centre, Kingston General Hospital, Kingston, Ontario K7L 2V7, Canada
| | - Brian G Amsden
- Department of Chemical Engineering, Queen's University, Kingston, Ontario K7L 3N6, Canada.,Human Mobility Research Centre, Kingston General Hospital, Kingston, Ontario K7L 2V7, Canada
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11
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Yu W, Maynard E, Chiaradia V, Arno MC, Dove AP. Aliphatic Polycarbonates from Cyclic Carbonate Monomers and Their Application as Biomaterials. Chem Rev 2021; 121:10865-10907. [DOI: 10.1021/acs.chemrev.0c00883] [Citation(s) in RCA: 74] [Impact Index Per Article: 24.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Wei Yu
- School of Chemistry, University of Birmingham, Edgbaston, B15 2TT U.K
| | - Edward Maynard
- School of Chemistry, University of Birmingham, Edgbaston, B15 2TT U.K
| | - Viviane Chiaradia
- School of Chemistry, University of Birmingham, Edgbaston, B15 2TT U.K
| | - Maria C. Arno
- School of Chemistry, University of Birmingham, Edgbaston, B15 2TT U.K
- Institute of Cancer and Genomic Sciences, University of Birmingham, Edgbaston, B15 2TT U.K
| | - Andrew P. Dove
- School of Chemistry, University of Birmingham, Edgbaston, B15 2TT U.K
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12
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Beck-Broichsitter M. Comparative in vitro degradation of surface-eroding poly(alkylene carbonate)s. Polym Degrad Stab 2020. [DOI: 10.1016/j.polymdegradstab.2020.109186] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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13
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D'Amato AR, Puhl DL, Ellman SAT, Balouch B, Gilbert RJ, Palermo EF. Vastly extended drug release from poly(pro-17β-estradiol) materials facilitates in vitro neurotrophism and neuroprotection. Nat Commun 2019; 10:4830. [PMID: 31645570 PMCID: PMC6811552 DOI: 10.1038/s41467-019-12835-w] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2019] [Accepted: 10/03/2019] [Indexed: 12/22/2022] Open
Abstract
Central nervous system (CNS) injuries persist for years, and currently there are no therapeutics that can address the complex injury cascade that develops over this time-scale. 17β-estradiol (E2) has broad tropism within the CNS, targeting and inducing beneficial phenotypic changes in myriad cells following injury. To address the unmet need for vastly prolonged E2 release, we report first-generation poly(pro-E2) biomaterial scaffolds that release E2 at nanomolar concentrations over the course of 1-10 years via slow hydrolysis in vitro. As a result of their finely tuned properties, these scaffolds demonstrate the ability to promote and guide neurite extension ex vivo and protect neurons from oxidative stress in vitro. The design and testing of these materials reported herein demonstrate the first step towards next-generation implantable biomaterials with prolonged release and excellent regenerative potential.
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Affiliation(s)
- Anthony R D'Amato
- Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, 110 8th St., Troy, NY, 12180, USA
| | - Devan L Puhl
- Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, 110 8th St., Troy, NY, 12180, USA
| | - Samuel A T Ellman
- Materials Science and Engineering, Rensselaer Polytechnic Institute, 110 8th St., Troy, NY, 12180, USA
| | - Bailey Balouch
- Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, 110 8th St., Troy, NY, 12180, USA
| | - Ryan J Gilbert
- Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, 110 8th St., Troy, NY, 12180, USA.
| | - Edmund F Palermo
- Materials Science and Engineering, Rensselaer Polytechnic Institute, 110 8th St., Troy, NY, 12180, USA.
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14
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Bonartsev AP, Bonartseva GA, Reshetov IV, Kirpichnikov MP, Shaitan KV. Application of Polyhydroxyalkanoates in Medicine and the Biological Activity of Natural Poly(3-Hydroxybutyrate). Acta Naturae 2019; 11:4-16. [PMID: 31413875 PMCID: PMC6643351 DOI: 10.32607/20758251-2019-11-2-4-16] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2019] [Indexed: 12/18/2022] Open
Abstract
Biodegradable and biocompatible polymers, polyhydroxyalkanoates (PHAs), are actively used in medicine to produce a wide range of medical devices and dosage formulations. The medical industry mainly utilizes PHAs obtained by chemical synthesis, but interest in the medical application of natural PHAs obtained biotechnologically is also growing. Synthetic PHAs are the biomimetic analogs of bacterial poly(3-hydroxybutyrate) (PHB) and other natural PHAs. This paper addresses the issue of the presence of biological activity in synthetic and natural PHAs (stimulation of cell proliferation and differentiation, tissue regeneration) and their possible association with various biological functions of PHB in bacteria and eukaryotes, including humans.
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Affiliation(s)
- A. P. Bonartsev
- Faculty of Biology, M.V. Lomonosov Moscow State University, Leninskie Gory 1, bldg. 12, Moscow, 119234, Russia
- A.N. Bach Institute of Biochemistry, Research Center of Biotechnology of the Russian Academy of Sciences, Leninsky Ave. 33, bldg. 2, Moscow, 119071, Russia
| | - G. A. Bonartseva
- A.N. Bach Institute of Biochemistry, Research Center of Biotechnology of the Russian Academy of Sciences, Leninsky Ave. 33, bldg. 2, Moscow, 119071, Russia
| | - I. V. Reshetov
- Sechenov First Moscow State University, Trubetskaya Str. 8, bldg. 2, Moscow, 119991, Russia
| | - M. P. Kirpichnikov
- Faculty of Biology, M.V. Lomonosov Moscow State University, Leninskie Gory 1, bldg. 12, Moscow, 119234, Russia
| | - K. V. Shaitan
- Faculty of Biology, M.V. Lomonosov Moscow State University, Leninskie Gory 1, bldg. 12, Moscow, 119234, Russia
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15
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16
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Bochyńska AI, Hannink G, Rongen JJ, Grijpma DW, Buma P. In Vitro and In Vivo Characterization of Biodegradable Reactive Isocyanate-Terminated Three-Armed- and Hyperbranched Block Copolymeric Tissue Adhesives. Macromol Biosci 2017; 17. [PMID: 28714290 DOI: 10.1002/mabi.201700125] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2017] [Revised: 05/29/2017] [Indexed: 11/07/2022]
Abstract
Tissue adhesives are an attractive class of biomaterials, which can serve as a treatment for meniscus tears. In this study, physicochemical and adhesive properties of novel biodegradable three-armed- and hyperbranched block copolymeric adhesives are evaluated. Additionally, their degradation in vitro and in vivo, and the tissue reaction after subcutaneous injection in rats are assessed. The developed adhesives have sufficient adhesive strength to meniscus tissue after curing (66-88 kPa). Networks based on the three-armed adhesive have tensile properties that are in the same range as human meniscus. After 26 weeks, networks based on the hyperbranched adhesive show a faster mass loss (25.4%) compared to networks prepared from the three-armed ones (5.5%). Both adhesives induce an inflammatory reaction, however, no necrosis and only initial toxic effects on peripheral tissues are observed. The proposed materials are suitable candidates for the use as resorbable tissue adhesives for meniscus repair.
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Affiliation(s)
- Agnieszka I Bochyńska
- Orthopaedic Research Laboratory, Department of Orthopaedics, Nijmegen Centre for Molecular Life Sciences, Radboud University Nijmegen Medical Centre, 547 Orthopaedic Research Laboratory, P.O. Box 9101, 6500 HB, Nijmegen, The Netherlands.,Department of Biomaterials Science and Technology, MIRA Institute, University of Twente, Enschede, P.O. Box 217, 7500 AE, Enschede, The Netherlands
| | - Gerjon Hannink
- Orthopaedic Research Laboratory, Department of Orthopaedics, Nijmegen Centre for Molecular Life Sciences, Radboud University Nijmegen Medical Centre, 547 Orthopaedic Research Laboratory, P.O. Box 9101, 6500 HB, Nijmegen, The Netherlands
| | - Jan J Rongen
- Orthopaedic Research Laboratory, Department of Orthopaedics, Nijmegen Centre for Molecular Life Sciences, Radboud University Nijmegen Medical Centre, 547 Orthopaedic Research Laboratory, P.O. Box 9101, 6500 HB, Nijmegen, The Netherlands
| | - Dirk W Grijpma
- Department of Biomaterials Science and Technology, MIRA Institute, University of Twente, Enschede, P.O. Box 217, 7500 AE, Enschede, The Netherlands.,Department of Biomedical Engineering, W. J. Kolff Institute, University Medical Centre Groningen, University of Groningen, Antonius Deusinglaan 1, 9713 AV, Groningen, The Netherlands
| | - Pieter Buma
- Orthopaedic Research Laboratory, Department of Orthopaedics, Nijmegen Centre for Molecular Life Sciences, Radboud University Nijmegen Medical Centre, 547 Orthopaedic Research Laboratory, P.O. Box 9101, 6500 HB, Nijmegen, The Netherlands
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17
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Ma Z, Wu Y, Wang J, Liu C. In vitro and in vivo degradation behavior of poly(trimethylene carbonate-co-d,l-lactic acid) copolymer. Regen Biomater 2017; 4:207-213. [PMID: 28798866 PMCID: PMC5544909 DOI: 10.1093/rb/rbx003] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2016] [Revised: 01/06/2017] [Accepted: 01/20/2017] [Indexed: 11/13/2022] Open
Abstract
We present P(TMC-co-DLLA) copolymer with the molar ratio of TMC: DLLA = 15: 85 was used to systematic study of in vivo and in vitro degradation behaviors. Dense homogeneous copolymer specimens were prepared by compression molding method. The in vitro and in vivo degradation were, respectively, performed at simulative body condition and implanted into rat’s subcutaneous condition. Investigations were followed via physicochemical and histological analysis such as SEM, GPC, DSC, FTIR and H&E stain. The results demonstrate that copolymeric material can degrade in phosphate buffer solution (PBS) and in rat’s body, and the in vivo degradation rate is faster. Obvious decline of molecule weight and mass loss has been observed, which led to the attenuation of mechanical strength. Furthermore, apart from the hydrolysis, macrophagocytes took part in the phagocytosis in vivo, indicating that degradation rate could be regulated by the combinational mechanism. It is concluded that P(TMC-co-DLLA) copolymer is a promising candidate for tissue repair.
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Affiliation(s)
- Zhengyu Ma
- Engineering Research Center for Biomedical Materials of Ministry of Education, School of Materials Science and Engineeering, East China University of Science and Technology, Shanghai 200237, People's Republic of China
| | - Yi Wu
- Engineering Research Center for Biomedical Materials of Ministry of Education, School of Materials Science and Engineeering, East China University of Science and Technology, Shanghai 200237, People's Republic of China
| | - Jing Wang
- Engineering Research Center for Biomedical Materials of Ministry of Education, School of Materials Science and Engineeering, East China University of Science and Technology, Shanghai 200237, People's Republic of China
| | - Changsheng Liu
- Engineering Research Center for Biomedical Materials of Ministry of Education, School of Materials Science and Engineeering, East China University of Science and Technology, Shanghai 200237, People's Republic of China.,The State Key Laboratory of Bioreactor Engineering, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, People's Republic of China.,Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, People's Republic of China
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18
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Zhang Y, Liang RJ, Xu JJ, Shen LF, Gao JQ, Wang XP, Wang NN, Shou D, Hu Y. Efficient induction of antimicrobial activity with vancomycin nanoparticle-loaded poly(trimethylene carbonate) localized drug delivery system. Int J Nanomedicine 2017; 12:1201-1214. [PMID: 28243084 PMCID: PMC5315202 DOI: 10.2147/ijn.s127715] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Surgery and the local placement of an antibiotic are the predominant therapies to treat chronic osteomyelitis. Vancomycin-loaded N-trimethyl chitosan nanoparticles (VCM/TMC NPs) as a potential drug delivery system have high intracellular penetration and effective intracellular antibacterial activity. This study investigated the effects of a biocompatible material, poly(trimethylene carbonate) (PTMC), to increase the sustained effectiveness of an intracellular antibiotic and its potential application in antibiotic delivery. VCM/TMC NP-PTMC was characterized using scanning electron microscopy and Fourier transform infrared spectroscopy to determine the morphology, stability and chemical interaction of the drug with the polymer. Further, the biodegradation, antibacterial activity, protein adsorption, cell proliferation and drug release characteristics were evaluated. In addition, a Staphylococcus aureus-induced osteomyelitis rabbit model was used to investigate the antibiotic activity and bone repair capability of VCM/TMC NP-PTMC. The results showed that the composite beads of VCM/TMC NPs followed a sustained and slow release pattern and had excellent antibacterial activity and a higher protein adsorption and cell proliferation rate than the VCM-PTMC in vitro. Furthermore, VCM/TMC NP-PTMC inhibits bacteria and promotes bone repair in vivo. Thus, VCM/TMC NP-PTMC might be beneficial in periodontal management to reduce the bacterial load at the infection site and promote bone repair.
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Affiliation(s)
- Yang Zhang
- Department of Medicine, Zhejiang Academy of Traditional Chinese Medicine
| | - Ruo-jia Liang
- Department of Gynaecology, Zhejiang Provincial Hospital of Traditional Chinese Medicine, Hangzhou
| | | | - Li-feng Shen
- Department of Medicine, Zhejiang Academy of Traditional Chinese Medicine
| | - Jian-qing Gao
- College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, People’s Republic of China
| | - Xu-ping Wang
- Department of Medicine, Zhejiang Academy of Traditional Chinese Medicine
| | - Na-ni Wang
- Department of Medicine, Zhejiang Academy of Traditional Chinese Medicine
| | - Dan Shou
- Department of Medicine, Zhejiang Academy of Traditional Chinese Medicine
| | - Ying Hu
- Zhejiang Pharmaceutical College, Ningbo
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19
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Steg H, Buizer AT, Woudstra W, Veldhuizen AG, Bulstra SK, Grijpma DW, Kuijer R. Oxygen-releasing poly(trimethylene carbonate) microspheres for tissue engineering applications. POLYM ADVAN TECHNOL 2016. [DOI: 10.1002/pat.3919] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Hilde Steg
- University of Groningen, University Medical Center Groningen; Department of Biomedical Engineering (FB40); A. Deusinglaan 1 9713 AV Groningen The Netherlands
| | - Arina T Buizer
- University of Groningen, University Medical Center Groningen; Department of Orthopedic Surgery; Hanzeplein 1 9713 GZ Groningen The Netherlands
| | - Willem Woudstra
- University of Groningen, University Medical Center Groningen; Department of Biomedical Engineering (FB40); A. Deusinglaan 1 9713 AV Groningen The Netherlands
| | - Albert G Veldhuizen
- University of Groningen, University Medical Center Groningen; Department of Orthopedic Surgery; Hanzeplein 1 9713 GZ Groningen The Netherlands
| | - Sjoerd K Bulstra
- University of Groningen, University Medical Center Groningen; Department of Orthopedic Surgery; Hanzeplein 1 9713 GZ Groningen The Netherlands
| | - Dirk W Grijpma
- University of Groningen, University Medical Center Groningen; Department of Biomedical Engineering (FB40); A. Deusinglaan 1 9713 AV Groningen The Netherlands
- MIRA Institute for Biomedical Technology and Technical Medicine, Department of Biomaterials Science and Technology, Faculty of Science and Technology; University of Twente; PO Box 217 7500 AE Enschede The Netherlands
| | - Roel Kuijer
- University of Groningen, University Medical Center Groningen; Department of Biomedical Engineering (FB40); A. Deusinglaan 1 9713 AV Groningen The Netherlands
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20
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Biodegradable polyester networks including hydrophilic groups favor BMSCs differentiation and can be eroded by macrophage action. Polym Degrad Stab 2016. [DOI: 10.1016/j.polymdegradstab.2016.05.020] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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21
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Rongen JJ, van Bochove B, Hannink G, Grijpma DW, Buma P. Degradation behavior of, and tissue response to photo-crosslinked poly(trimethylene carbonate) networks. J Biomed Mater Res A 2016; 104:2823-32. [DOI: 10.1002/jbm.a.35826] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2016] [Accepted: 07/06/2016] [Indexed: 11/11/2022]
Affiliation(s)
- Jan J. Rongen
- Orthopedic Research Laboratory; Radboud University Medical Center; Nijmegen The Netherlands
| | - Bas van Bochove
- Department of Biomaterials Science and Technology; MIRA Institute for Biomedical Engineering and Technical Medicine, University of Twente; Enschede The Netherlands
| | - Gerjon Hannink
- Orthopedic Research Laboratory; Radboud University Medical Center; Nijmegen The Netherlands
| | - Dirk W. Grijpma
- Department of Biomaterials Science and Technology; MIRA Institute for Biomedical Engineering and Technical Medicine, University of Twente; Enschede The Netherlands
- Department of Biomedical Engineering; University of Groningen and University Medical Center Groningen, W.J. Kolff Institute; Groningen The Netherlands
| | - Pieter Buma
- Orthopedic Research Laboratory; Radboud University Medical Center; Nijmegen The Netherlands
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22
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Fukushima K. Poly(trimethylene carbonate)-based polymers engineered for biodegradable functional biomaterials. Biomater Sci 2016; 4:9-24. [DOI: 10.1039/c5bm00123d] [Citation(s) in RCA: 211] [Impact Index Per Article: 26.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
This review presents recent examples of applications and functionalization strategies of poly(trimethylene carbonate), its copolymers, and its derivatives to exploit the unique physicochemical properties of the aliphatic polycarbonate backbone.
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Affiliation(s)
- K. Fukushima
- Department of Polymer Science and Engineering
- Graduate School of Science and Engineering
- Yamagata University
- Yamagata 992-8510
- Japan
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23
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Preparation and Evaluation of Vancomycin-Loaded N-trimethyl Chitosan Nanoparticles. Polymers (Basel) 2015. [DOI: 10.3390/polym7091488] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
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24
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Boehnke N, Cam C, Bat E, Segura T, Maynard HD. Imine Hydrogels with Tunable Degradability for Tissue Engineering. Biomacromolecules 2015; 16:2101-8. [PMID: 26061010 PMCID: PMC4583069 DOI: 10.1021/acs.biomac.5b00519] [Citation(s) in RCA: 88] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
A shortage of available organ donors has created a need for engineered tissues. In this context, polymer-based hydrogels that break down inside the body are often used as constructs for growth factors and cells. Herein, we report imine cross-linked gels where degradation is controllable by the introduction of mixed imine cross-links. Specifically, hydrazide-functionalized poly(ethylene glycol) (PEG) reacts with aldehyde-functionalized PEG (PEG-CHO) to form hydrazone linked hydrogels that degrade quickly in media. The time to degradation can be controlled by changing the structure of the hydrazide group or by introducing hydroxylamines to form nonreversible oxime linkages. Hydrogels containing adipohydrazide-functionalized PEG (PEG-ADH) and PEG-CHO were found to degrade more rapidly than gels formed from carbodihydrazide-functionalized PEG (PEG-CDH). Incorporating oxime linkages via aminooxy-functionalized PEG (PEG-AO) into the hydrazone cross-linked gels further stabilized the hydrogels. This imine cross-linking approach should be useful for modulating the degradation characteristics of 3D cell culture supports for controlled cell release.
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Affiliation(s)
- Natalie Boehnke
- Department of Chemistry and Biochemistry, University of California, Los Angeles, 607 Charles E. Young Drive East, Los Angeles, California 90095, United States
| | - Cynthia Cam
- Department of Bioengineering, University of California, Los Angeles, 420 Westwood Plaza, 5121 Engineering V, Los Angeles, California 90095, United States
| | - Erhan Bat
- Department of Chemistry and Biochemistry, University of California, Los Angeles, 607 Charles E. Young Drive East, Los Angeles, California 90095, United States
| | - Tatiana Segura
- Department of Chemical and Biomolecular Engineering and the California NanoSystems Institute, 420 Westwood Plaza, 5531 Boelter Hall, Los Angeles, California 90095, United States
| | - Heather D. Maynard
- Department of Chemistry and Biochemistry, University of California, Los Angeles, 607 Charles E. Young Drive East, Los Angeles, California 90095, United States
- Department of Bioengineering, University of California, Los Angeles, 420 Westwood Plaza, 5121 Engineering V, Los Angeles, California 90095, United States
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25
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A new poly(1,3-trimethylene carbonate) film provides effective adhesion reduction after major abdominal surgery in a rat model. Surgery 2015; 157:1113-20. [DOI: 10.1016/j.surg.2015.02.004] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2014] [Revised: 02/04/2015] [Accepted: 02/13/2015] [Indexed: 12/08/2022]
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26
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Yuan Y, Jin X, Fan Z, Li S, Lu Z. In vivo degradation of copolymers prepared from L-lactide, 1,3-trimethylene carbonate and glycolide as coronary stent materials. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2015; 26:139. [PMID: 25716020 DOI: 10.1007/s10856-015-5384-8] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/19/2014] [Accepted: 09/12/2014] [Indexed: 06/04/2023]
Abstract
A series of high molecular weight polymers were prepared by ring opening polymerization of L-lactide (L-LA), 1,3-trimethylene carbonate (TMC) and glycolide using stannous octoate as catalyst. The resulting polymers were characterized by gel permeation chromatography, (1)H nuclear magnetic resonance, differential scanning calorimeter and tensile tests. All the polymers present high molecular weights. Compared with PLLA and PTLA copolymers, the terpolymers exhibit interesting properties such as improved toughness and lowered crystallinity with only slightly reduced mechanical strength. In vivo degradation was performed by subcutaneous implantation in rats to evaluate the potential of the copolymers as bioresorbable coronary stent material. The results show that all the polymers conserved to a large extent their mechanical properties during the first 90 days, except the strain at break which exhibited a strong decrease. Meanwhile, significant molecular weight decrease and weight loss are detected in the case of terpolymers. Therefore, the PTLGA terpolymers present a good potential for the development of totally bioresorbable coronary stents.
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Affiliation(s)
- Yuan Yuan
- Department of Materials Science, Fudan University, 220 Handan Road, Shanghai, 200433, People's Republic of China
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27
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Schüller-Ravoo S, Zant E, Feijen J, Grijpma DW. Preparation of a designed poly(trimethylene carbonate) microvascular network by stereolithography. Adv Healthc Mater 2014; 3:2004-11. [PMID: 25319598 DOI: 10.1002/adhm.201400363] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2014] [Revised: 09/12/2014] [Indexed: 01/19/2023]
Abstract
Designed flexible and elastic network structures are prepared by stereolithography using a photo-crosslinkable resin based on a poly(trimethylene carbonate) (PTMC) macromer with a molecular weight of 3150 g/mol. Physical properties and the compatibility with human umbilical vein endothelial cells (HUVECs) are evaluated. The hydrophobic networks are found to be flexible and elastic, with an E modulus of 7.9 ± 0.1 MPa, a tensile strength of 3.5 ± 0.1 MPa and an elongation at break of 76.7 ± 0.7%. HUVECs attach and proliferate well on the surfaces of the built structures. A three-dimensional microvascular network is designed to serve as a perfusable scaffold for tissue engineering. In the design, 5 generations of open channels each branch into 4 smaller channels yielding a microvascular region with a high density of capillaries. The overall cross-sectional area through which medium or blood can be perfused remains constant. These structures would ensure efficient nourishment of cells in a large volume of tissue. Built by stereolithography using the PTMC resin, the smallest channels of these structures have square cross-sectional areas, with inner widths of approximately 224 μm and wall thicknesses of approximately 152 μm. The channels are open, allowing water to perfuse the scaffold at 0.279 ± 0.006 mL/s at 80 mmHg and 0.335 ± 0.009 mL/s at 120 mmHg.
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Affiliation(s)
- Sigrid Schüller-Ravoo
- Department of Polymer Chemistry and Biomaterials; Institute for Biomedical Technology and Technical Medicine (MIRA); University of Twente; P.O. Box 217 7500 AE Enschede The Netherlands
- Department of Biomaterials Science and Technology; Institute for Biomedical Technology and Technical Medicine (MIRA); University of Twente; P.O. Box 217 7500 AE Enschede The Netherlands
| | - Erwin Zant
- Department of Biomaterials Science and Technology; Institute for Biomedical Technology and Technical Medicine (MIRA); University of Twente; P.O. Box 217 7500 AE Enschede The Netherlands
| | - Jan Feijen
- Department of Polymer Chemistry and Biomaterials; Institute for Biomedical Technology and Technical Medicine (MIRA); University of Twente; P.O. Box 217 7500 AE Enschede The Netherlands
| | - Dirk W. Grijpma
- Department of Biomaterials Science and Technology; Institute for Biomedical Technology and Technical Medicine (MIRA); University of Twente; P.O. Box 217 7500 AE Enschede The Netherlands
- Department of Biomedical Engineering; University Medical Centre Groningen; University of Groningen; P.O. Box 196 9700 AD Groningen The Netherlands
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28
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Vyner MC, Li A, Amsden BG. The effect of poly(trimethylene carbonate) molecular weight on macrophage behavior and enzyme adsorption and conformation. Biomaterials 2014; 35:9041-8. [DOI: 10.1016/j.biomaterials.2014.07.023] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2014] [Accepted: 07/18/2014] [Indexed: 10/24/2022]
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29
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Chu D, Curdy C, Riebesehl B, Beck-Broichsitter M, Kissel T. In situ forming parenteral depot systems based on poly(ethylene carbonate): effect of polymer molecular weight on model protein release. Eur J Pharm Biopharm 2013; 85:1245-9. [PMID: 23791717 DOI: 10.1016/j.ejpb.2013.05.020] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2012] [Revised: 05/10/2013] [Accepted: 05/27/2013] [Indexed: 11/26/2022]
Abstract
The objective of this study was to investigate the effect of molecular weight (MW) on the drug release from poly(ethylene carbonate) (PEC) based surface-eroding in situ forming depots (ISFD). In phosphate buffered saline (PBS) pH 7.4, 63.7% of bovine serum albumin BSA was released from high MW PEC of 200 kDa (PEC200) in DMSO (15%, w/w) in 2 days, while during the same time period, the release of BSA from PEC41 samples was only 22.5%. At higher concentrations of PEC41 (25%, w/w), the initial burst was further reduced, and even after 6 days, only 16.3% was released. Compared to depots based on PEC200, there was lower rate of solvent release, slower phase inversion, and a denser surface in PEC41 samples. An expansion in size of PEC41 depots suggested that the polymer barrier of PEC41 impeded the diffusion of solvent out of the samples effectively. In conclusion, the initial burst of protein from ISFD of PEC41 was significantly reduced, which would be a promising candidate as polymeric carrier.
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Affiliation(s)
- Dafeng Chu
- Department of Pharmaceutics and Biopharmacy, Philipps-Universität, Marburg, Germany
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30
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Biodegradable cross-linked poly(trimethylene carbonate) networks for implant applications: Synthesis and properties. POLYMER 2013. [DOI: 10.1016/j.polymer.2013.03.059] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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31
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Bat E, van Kooten TG, Harmsen MC, Plantinga JA, van Luyn MJA, Feijen J, Grijpma DW. Physical properties and erosion behavior of poly(trimethylene carbonate-co-ε-caprolactone) networks. Macromol Biosci 2013; 13:573-83. [PMID: 23427167 DOI: 10.1002/mabi.201200373] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2012] [Revised: 12/21/2012] [Indexed: 11/07/2022]
Abstract
Form-stable resorbable networks are prepared by gamma irradiating trimethylene carbonate (TMC)- and ε-caprolactone (CL)-based (co)polymer films. To evaluate their suitability for biomedical applications, their physical properties and erosion behavior are investigated. Homopolymer and copolymer networks that are amorphous at room temperature are flexible and rubbery with elastic moduli ranging from 1.8 ± 0.3 to 5.2 ± 0.4 MPa and permanent set values as low as 0.9% strain. The elastic moduli of the semicrystalline networks are higher and range from 61 ± 3 to 484 ± 34 MPa. The erosion behavior of (co)polymer networks is investigated in vitro using macrophage cultures, and in vivo by subcutaneous implantation in rats. In macrophage cultures, as well as upon implantation, a surface erosion process is observed for the amorphous (co)polymer networks, while an abrupt decrease in the rate and a change in the nature of the erosion process are observed with increasing crystallinity. These resorbable and form-stable networks with tuneable properties may find application in a broad range of biomedical applications.
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Affiliation(s)
- Erhan Bat
- Department of Polymer Chemistry and Biomaterials, MIRA Institute for Biomedical Technology and Technical Medicine, Faculty of Science and Technology, University of Twente, P.O. Box 217, 7500 AE, Enschede, The Netherlands
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Kluin OS, van der Mei HC, Busscher HJ, Neut D. Biodegradable vs non-biodegradable antibiotic delivery devices in the treatment of osteomyelitis. Expert Opin Drug Deliv 2013; 10:341-51. [PMID: 23289645 DOI: 10.1517/17425247.2013.751371] [Citation(s) in RCA: 97] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
INTRODUCTION Chronic osteomyelitis, or bone infection, is a major worldwide cause of morbidity and mortality, as it is exceptionally hard to treat due to patient and pathogen-associated factors. Successful treatment requires surgical debridement together with long-term, high antibiotic concentrations that are best achieved by local delivery devices, either made of degradable or non-degradable materials. AREAS COVERED Non-degradable delivery devices are frequently constituted by polymethylmethacrylate-based carriers. Drawbacks are the need to remove the carrier (as the carrier itself may provide a substratum for bacterial colonization), inefficient release kinetics and incompatibility with certain antibiotics. These drawbacks have led to the quest for degradable alternatives, but also devices made of biodegradable calcium sulphate, collagen sponges, calcium phosphate or polylactic acids have their specific disadvantages. EXPERT OPINION Antibiotic treatment of osteomyelitis with the current degradable and non-degradable delivery devices is effective in the majority of cases. Degradable carriers have an advantage over non-degradable carriers that they do not require surgical removal. Synthetic poly(trimethylene carbonate) may be preferred in the future over currently approved lactic/glycolic acids, because it does not yield acidic degradation products. Moreover, degradable poly(trimethylene carbonate) yields a zero-order release kinetics that may not stimulate development of antibiotic-resistant bacterial strains due to the absence of long-term, low-concentration tail-release.
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Affiliation(s)
- Otto S Kluin
- Department of Biomedical Engineering, W. J. Kolff Institute, University Medical Center Groningen, Antonius Deusinglaan 1, 9713 AV Groningen , The Netherlands
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Sharifi S, Blanquer SBG, van Kooten TG, Grijpma DW. Biodegradable nanocomposite hydrogel structures with enhanced mechanical properties prepared by photo-crosslinking solutions of poly(trimethylene carbonate)-poly(ethylene glycol)-poly(trimethylene carbonate) macromonomers and nanoclay particles. Acta Biomater 2012; 8:4233-43. [PMID: 22995403 DOI: 10.1016/j.actbio.2012.09.014] [Citation(s) in RCA: 63] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2012] [Revised: 09/10/2012] [Accepted: 09/11/2012] [Indexed: 01/14/2023]
Abstract
Soft hydrogels with elasticity modulus values lower than 100kPa that are tough and biodegradable are of great interest in medicine and in tissue engineering applications. We have developed a series of soft hydrogel structures from different methacrylate-functionalized triblock copolymers of poly(ethylene glycol) (PEG) with poly(trimethylene carbonate) (PTMC) by photo-crosslinking aqueous solutions of the macromonomers in 2.5 and 5wt.% colloidal dispersions of clay nanoparticles (Laponite XLG). The length of the PTMC blocks of the macromonomers and the clay content determined the physicomechanical properties of the obtained hydrogels. While an increase in the PTMC block length in the macromonomers from 0.2 to 5kg/mol resulted in a decrease in the gel content, the addition of 5wt.% Laponite nanoclay to the crosslinking solution lead to very high gel contents of the hydrogels of more than 95%. The effect of PTMC block length on the mechanical properties of the hydrogels was not as pronounced, and soft gels with a compressive modulus of less than 15kPa and toughness values of 25kJm(-3) were obtained. However, the addition of 5wt.% Laponite nanoclay to the formulations considerably increased the compressive modulus and resilience of the hydrogels; swollen nanocomposite networks with compressive modulus and toughness values of up to 67kPa and 200kJm(-3), respectively, could then be obtained. The prepared hydrogels were shown to be enzymatically degradable by cholesterol esterase and by the action of macrophages. With an increase in PTMC block length in the hydrogels, the rates of mass loss increased, while the incorporated Laponite nanoclay suppressed degradation. Nanocomposite hydrogel structures with a designed gyroid pore network architecture were prepared by stereolithography. Furthermore, in the swollen state the porous gyroid structures were mechanically stable and the pore network remained fully open and interconnected.
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Affiliation(s)
- Shahriar Sharifi
- W.J. Kolff Institute, Department of Biomedical Engineering, University Medical Centre Groningen, University of Groningen, P.O. Box 196, 9700 AD Groningen, The Netherlands
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Cornacchione LA, Qi B, Bianco J, Zhou Z, Amsden BG. Photo-Cross-Linked Poly(ethylene carbonate) Elastomers: Synthesis, in Vivo Degradation, and Determination of in Vivo Degradation Mechanism. Biomacromolecules 2012; 13:3099-107. [DOI: 10.1021/bm300913q] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- L. A. Cornacchione
- Department of Chemical Engineering, Queen’s University, Kingston, ON, Canada
| | - B. Qi
- Department of Chemical Engineering, Queen’s University, Kingston, ON, Canada
| | - J. Bianco
- Department of Chemical Engineering, Queen’s University, Kingston, ON, Canada
| | - Z. Zhou
- Department of Chemical Engineering, Queen’s University, Kingston, ON, Canada
| | - B. G. Amsden
- Department of Chemical Engineering, Queen’s University, Kingston, ON, Canada
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Abstract
Biointegration refers to the interconnection between a biomedical device and the recipient tissue. In many implant devices, the lack of proper biointegration can cause device failure and potentially serious medical problems. This review summarizes the recent progress in surface chemistry, drug delivery and antifouling methods to improve the biointegration of implants. Much progress has been made as our understanding of biological systems and material properties expands and as new technologies become available. This article addresses methods of enhancing biointegration by means of modifying implant surface chemistry and by drug-delivery approaches.
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Waldeck H, Kao WJ. Effect of the addition of a labile gelatin component on the degradation and solute release kinetics of a stable PEG hydrogel. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2012; 23:1595-611. [PMID: 21801489 DOI: 10.1163/092050611x587547] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Characterization of the degradation mechanisms and resulting products of biodegradable materials is critical in understanding the behavior of the material including solute transport and biological response. Previous mathematical analyses of a semi-interpenetrating network (sIPN) containing both labile gelatin and a stable cross-linked poly(ethylene glycol) (PEG) network found that diffusion-based models alone were unable to explain the release kinetics of solutes from the system. In this study, degradation of the sIPN and its effect on solute release and swelling kinetics were investigated. The kinetics of the primary mode of degradation, gelatin dissolution, was dependent on temperature, preparation methods, PEGdA and gelatin concentration, and the weight ratio between the gelatin and PEG. The gelatin dissolution rate positively correlated with both matrix swelling and the release kinetics of high-molecular-weight model compound, FITC-dextran. Coupled with previous in vitro studies, the kinetics of sIPN degradation provided insights into the time-dependent changes in cellular response including adhesion and protein expression. These results provide a facile guide in material formulation to control the delivery of high-molecular-weight compounds with concomitant modulation of cellular behavior.
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Affiliation(s)
- H Waldeck
- a Department of Biomedical Engineering , College of Engineering, University of Wisconsin-Madison , 777 Highland Avenue , Madison , WI , 53705 , USA
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Low Charge Density Cationic Polymers for Gene Delivery: Exploring the Influence of Structural Elements on in vitro Transfection. Macromol Biosci 2012; 12:840-8. [DOI: 10.1002/mabi.201100480] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2011] [Revised: 02/28/2012] [Indexed: 12/22/2022]
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Adamus A, Wach RA, Olejnik AK, Dzierzawska J, Rosiak JM. Degradation of nerve guidance channels based on a poly(l-lactic acid) poly(trimethylene carbonate) biomaterial. Polym Degrad Stab 2012. [DOI: 10.1016/j.polymdegradstab.2012.01.021] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Photo-Crosslinked Biodegradable Hydrogels Prepared From Fumaric Acid Monoethyl Ester-Functionalized Oligomers for Protein Delivery. Macromol Biosci 2012; 12:692-702. [DOI: 10.1002/mabi.201100468] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2011] [Revised: 01/16/2012] [Indexed: 11/07/2022]
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Baudis S, Ligon SC, Seidler K, Weigel G, Grasl C, Bergmeister H, Schima H, Liska R. Hard-block degradable thermoplastic urethane-elastomers for electrospun vascular prostheses. ACTA ACUST UNITED AC 2011. [DOI: 10.1002/pola.25887] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Photo-Crosslinkable Poly(trimethylene carbonate)-Based Macromers for Closure of Ruptured Intervertebral Discs. ACTA ACUST UNITED AC 2011. [DOI: 10.1002/masy.201100047] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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Jansen J, Koopmans SA, Los LI, van der Worp RJ, Podt JG, Hooymans JM, Feijen J, Grijpma DW. Intraocular degradation behavior of crosslinked and linear poly(trimethylene carbonate) and poly(d,l-lactic acid). Biomaterials 2011; 32:4994-5002. [DOI: 10.1016/j.biomaterials.2011.03.062] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2011] [Accepted: 03/25/2011] [Indexed: 10/18/2022]
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Bat E, van Kooten TG, Feijen J, Grijpma DW. Resorbable elastomeric networks prepared by photocrosslinking of high-molecular-weight poly(trimethylene carbonate) with photoinitiators and poly(trimethylene carbonate) macromers as crosslinking aids. Acta Biomater 2011; 7:1939-48. [PMID: 21232640 DOI: 10.1016/j.actbio.2011.01.010] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2010] [Revised: 12/14/2010] [Accepted: 01/07/2011] [Indexed: 10/18/2022]
Abstract
Resorbable and elastomeric poly(trimethylene carbonate) (PTMC) networks were efficiently prepared by photoinitiated crosslinking of linear high-molecular-weight PTMC. To crosslink PTMC films, low-molecular-weight PTMC macromers with methacrylate end groups were synthesized and used as crosslinking aids. By exposing PTMC films containing only photoinitiator (Irgacure(®) 2959) or both photoinitiator and PTMC macromers to ultraviolet light, PTMC networks with high gel contents (87-95%) could be obtained. The crosslink density could be readily varied by adjusting the irradiation time or the amount of crosslinking aid used. The formed networks were flexible, with low elastic modulus values ranging from 7.1 to 7.5MPa, and also showed excellent resistance to creep in cyclic tests. In vitro experiments showed that the photocrosslinked PTMC networks could be eroded by macrophages, and upon incubation in aqueous cholesterol esterase enzyme- or potassium dioxide solutions. The rate of surface erosion of photocrosslinked PTMC networks was significantly lower than that observed for films prepared from linear PTMC. These resorbable PTMC elastomeric networks are compatible with cells and may find application in tissue engineering and controlled release.
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Bat E, van Kooten TG, Feijen J, Grijpma DW. Crosslinking of Trimethylene Carbonate and D
, L
-Lactide (Co-) Polymers by Gamma Irradiation in the Presence of Pentaerythritol Triacrylate. Macromol Biosci 2011; 11:952-61. [DOI: 10.1002/mabi.201100031] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2011] [Indexed: 11/08/2022]
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Bat E, Plantinga JA, Harmsen MC, van Luyn MJA, Feijen J, Grijpma DW. In vivo behavior of trimethylene carbonate and ε-caprolactone-based (co)polymer networks: degradation and tissue response. J Biomed Mater Res A 2011; 95:940-9. [PMID: 20845496 DOI: 10.1002/jbm.a.32921] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
The in vivo erosion behavior of crosslinked (co)polymers based on trimethylene carbonate (TMC) and ε-caprolactone (CL) was investigated. High molecular weight poly(trimethylene carbonate) (PTMC) homopolymer- and copolymer films were crosslinked by gamma irradiation. To adjust the in vivo erosion rate of the (co)polymer films, both the irradiation dose (25, 50, or 100 kGy) for PTMC and composition (100-70 mol % TMC) at a constant irradiation dose of 25 kGy were varied. After subcutaneous implantation of irradiated films in rats, their in vivo behavior was evaluated qualitatively and quantitatively. When the irradiation dose for PTMC was increased from 25 to 100 kGy, the erosion rate of nonextracted PTMC films (determined at day 5) decreased from 39.7 ± 16.0 μm day(-1) to 15.1 ± 2.5 μm day(-1), and the number of lymphocytes in the tissue surrounding the films decreased from 235 ± 114 cells mm(-2) to 64 ± 33 cells mm(-2). The number of macrophages and giant cells at the tissue-polymer interface also decreased with increasing irradiation dose. All (co)polymer films eroded completely within 28 days of implantation. Variation of the TMC content of gamma irradiated (co)polymer films did not affect the tissue response to the gamma irradiated (co)polymer films and their in vivo erosion behavior much.
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Affiliation(s)
- Erhan Bat
- Department of Polymer Chemistry and Biomaterials, Faculty of Science and Technology, MIRA Institute for Biomedical Technology and Technical Medicine, University of Twente, PO Box 217, 7500 AE Enschede, The Netherlands
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Bat E, Feijen J, Grijpma DW. Biodegradable Elastomeric Networks: Highly Efficient Cross-Linking of Poly(trimethylene carbonate) by Gamma Irradiation in the Presence of Pentaerythritol Triacrylate. Biomacromolecules 2010; 11:2692-9. [DOI: 10.1021/bm1007234] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Erhan Bat
- MIRA Institute for Biomedical Technology and Technical Medicine and Department of Polymer Chemistry and Biomaterials, Faculty of Science and Technology, University of Twente, P.O. Box 217, 7500 AE, Enschede, The Netherlands and Department of Biomedical Engineering, University Medical Centre Groningen, University of Groningen, A. Deusinglaan 1, 9713 AV, Groningen, The Netherlands
| | - Jan Feijen
- MIRA Institute for Biomedical Technology and Technical Medicine and Department of Polymer Chemistry and Biomaterials, Faculty of Science and Technology, University of Twente, P.O. Box 217, 7500 AE, Enschede, The Netherlands and Department of Biomedical Engineering, University Medical Centre Groningen, University of Groningen, A. Deusinglaan 1, 9713 AV, Groningen, The Netherlands
| | - Dirk W. Grijpma
- MIRA Institute for Biomedical Technology and Technical Medicine and Department of Polymer Chemistry and Biomaterials, Faculty of Science and Technology, University of Twente, P.O. Box 217, 7500 AE, Enschede, The Netherlands and Department of Biomedical Engineering, University Medical Centre Groningen, University of Groningen, A. Deusinglaan 1, 9713 AV, Groningen, The Netherlands
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