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Pawelec KM, Schoborg TA, Shapiro EM. Computed tomography technologies to measure key structural features of polymeric biomedical implants from bench to bedside. J Biomed Mater Res A 2024; 112:1893-1901. [PMID: 38728118 PMCID: PMC11368623 DOI: 10.1002/jbm.a.37735] [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: 02/02/2024] [Revised: 04/11/2024] [Accepted: 04/30/2024] [Indexed: 05/12/2024]
Abstract
Implanted polymeric devices, designed to encourage tissue regeneration, require porosity. However, characterizing porosity, which affects many functional device properties, is non-trivial. Computed tomography (CT) is a quick, versatile, and non-destructive way to gain 3D structural information, yet various CT technologies, such as benchtop, preclinical and clinical systems, all have different capabilities. As system capabilities determine the structural information that can be obtained, seamless monitoring of key device features through all stages of clinical translation must be engineered intentionally. Therefore, in this study we tested feasibility of obtaining structural information in pre-clinical systems and high-resolution micro-CT (μCT) under physiological conditions. To overcome the low CT contrast of polymers in hydrated environments, radiopaque nanoparticle contrast agent was incorporated into porous devices. The size of resolved features in porous structures is highly dependent on the resolution (voxel size) of the scan. As the voxel size of the CT scan increased (lower resolution) from 5 to 50 μm, the measured pore size was overestimated, and percentage porosity was underestimated by nearly 50%. With the homogeneous introduction of nanoparticles, changes to device structure could be quantified in the hydrated state, including at high-resolution. Biopolymers had significant structural changes post-hydration, including a mean increase of 130% in pore wall thickness that could potentially impact biological response. By incorporating imaging capabilities into polymeric devices, CT can be a facile way to monitor devices from initial design stages through to clinical translation.
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Affiliation(s)
- Kendell M Pawelec
- Michigan State University, Dept Radiology, East Lansing, MI 48824
- Institute for Quantitative Health Sciences and Engineering, Michigan State University, East Lansing, MI 48824, USA
| | - Todd A Schoborg
- University of Wyoming, Dept of Molecular Biology, Laramie, WY 82071
| | - Erik M Shapiro
- Michigan State University, Dept Radiology, East Lansing, MI 48824
- Institute for Quantitative Health Sciences and Engineering, Michigan State University, East Lansing, MI 48824, USA
- Michigan State University, Dept of Physiology, East Lansing, MI 48824, USA
- Michigan State University, Dept of Chemical Engineering and Material Science, East Lansing, MI 48824, USA
- Michigan State University, Dept of Biomedical Engineering, East Lansing, MI 48824, USA
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2
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Pawelec KM, Hix JML, Troia A, Kiupel M, Shapiro EM. Material Composition and Implantation Site Affect in vivo Device Degradation Rate. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.09.09.612079. [PMID: 39314464 PMCID: PMC11419000 DOI: 10.1101/2024.09.09.612079] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 09/25/2024]
Abstract
Successful tissue engineering requires biomedical devices that initially stabilize wounds, then degrade as tissue is regenerated. However, the material degradation rates reported in literature are often conflicting. Incorporation of in situ monitoring functionality into implanted devices would allow real time assessment of degradation and potential failure. This necessitates introduction of contrast agent as most biomedical devices are composed of polymeric materials with no inherent contrast in medical imaging modalities. In the present study, computed tomography (CT)-visible radiopaque composites were created by adding 5-20wt% tantalum oxide (TaOx) nanoparticles into polymers with distinct degradation profiles: polycaprolactone (PCL), poly(lactide-co-glycolide) (PLGA) 85:15 and PLGA 50:50, representing slow, medium and fast degrading materials respectively. Radiopaque phantoms, mimicking porous tissue engineering devices, were implanted into mice intramuscularly or intraperitoneally, and monitored via CT over 20 weeks. Changes in phantom volume, including collapse and swelling, were visualized over time. Phantom degradation profile was determined by polymer matrix, regardless of nanoparticle addition and foreign body response was dictated by the implant site. In addition, degradation kinetics were significantly affected in mid-degrading materials, transitioning from linear degradation intramuscularly to exponential degradation intraperitoneally, due to differences in inflammatory responses and fluid flow. Nanoparticle excretion from degraded phantoms lagged behind polymer, and future studies will modulate nanoparticle clearance. Utilizing in situ monitoring, this study seeks to unify literature and facilitate better tissue engineering devices, by highlighting the relative effect of composition and implant site on important materials properties.
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Affiliation(s)
- K 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
| | - J 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
| | - A Troia
- Department of Radiology, Michigan State University, East Lansing, MI 48824, USA
| | - M Kiupel
- Department of Pathobiology and Diagnostic Investigation, Michigan State University, East Lansing, MI 48824, USA
| | - E 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 Biomedical Engineering, Michigan State University, East Lansing, MI 48824, USA
- Department of Chemical Engineering and Materials Science, Michigan State University, East Lansing, MI 48824, USA
- Department of Physiology, Michigan State University, East Lansing, MI 48824, USA
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3
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Ali A, Ganie SA, Mir TA, Mazumdar N. Synthesis and characterization of amino-functionalized guar gum based polyurea: Preparation of iodine complexes, structural investigation and release studies. Int J Biol Macromol 2024; 271:132711. [PMID: 38815942 DOI: 10.1016/j.ijbiomac.2024.132711] [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: 01/28/2024] [Revised: 04/27/2024] [Accepted: 05/27/2024] [Indexed: 06/01/2024]
Abstract
Biobased materials are expanding dramatically in various industrial applications due to their unique intrinsic properties. In this study, various chemical functionalization procedures were used to synthesize guar gum, a naturally occurring polysaccharide-based polyurea, and its iodine complexes. Firstly, guar gum was subjected to tosylation reaction using p-toluene sulphonyl chloride to introduce tosyl moieties in the polymer chain with the degree of substitution (DS) ranging between 0.16 and 1.54. Sample having the highest degree of tosyl moiety was further reacted with tris(2-aminoethyl) amine to produce 6-deoxy-6-tris(2-aminoethyl) amine derivative via nucleophilic substitution reaction to impart amino functional groups. The degree of substitution in 6-deoxy-6-tris(2-aminoethyl) amine derivative was found to be 0.59. 6-deoxy-6-tris(2-aminoethyl) amine derivative was reacted with different diisocyanates (Toluene-2,4-diisocyanate (TDI), 1,6-diisocyanatohexane (HMDI)) to produce guar gum based polyurea. Iodine complexes of the resulting polyurea were prepared by reacting with different iodinating agents. Different chemical reactions, formation of polyurea and its iodine complexes were thoroughly analyzed by different analytical techniques such as FT-IR, NMR, elemental analysis, XRD, UV-Vis spectroscopy, and a reaction scheme has been proposed. Morphological and rheological characteristics were analyzed by SEM and viscosity measurement. Thermal analysis was carried out by TGA and DSC studies. Finally, by examining the complex's UV-Vis spectra, the iodine release characteristics from polyurea‑iodine complexes were investigated.
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Affiliation(s)
- Akbar Ali
- Materials (Polymer) Research Laboratory, Department of Chemistry, Jamia Millia Islamia, Central University, New Delhi 110025, India; Department of Chemistry, Kargil Campus, University of Ladakh, Kargil 194103, India.
| | - Showkat Ali Ganie
- Materials (Polymer) Research Laboratory, Department of Chemistry, Jamia Millia Islamia, Central University, New Delhi 110025, India
| | - Tariq Ahmed Mir
- Materials (Polymer) Research Laboratory, Department of Chemistry, Jamia Millia Islamia, Central University, New Delhi 110025, India
| | - Nasreen Mazumdar
- Materials (Polymer) Research Laboratory, Department of Chemistry, Jamia Millia Islamia, Central University, New Delhi 110025, India.
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4
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Emonde CK, Eggers ME, Wichmann M, Hurschler C, Ettinger M, Denkena B. Radiopacity Enhancements in Polymeric Implant Biomaterials: A Comprehensive Literature Review. ACS Biomater Sci Eng 2024; 10:1323-1334. [PMID: 38330191 PMCID: PMC10934286 DOI: 10.1021/acsbiomaterials.3c01667] [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: 11/14/2023] [Revised: 01/17/2024] [Accepted: 01/18/2024] [Indexed: 02/10/2024]
Abstract
Polymers as biomaterials possess favorable properties, which include corrosion resistance, light weight, biocompatibility, ease of processing, low cost, and an ability to be easily tailored to meet specific applications. However, their inherent low X-ray attenuation, resulting from the low atomic numbers of their constituent elements, i.e., hydrogen (1), carbon (6), nitrogen (7), and oxygen (8), makes them difficult to visualize radiographically. Imparting radiopacity to radiolucent polymeric implants is necessary to enable noninvasive evaluation of implantable medical devices using conventional imaging methods. Numerous studies have undertaken this by blending various polymers with contrast agents consisting of heavy elements. The selection of an appropriate contrast agent is important, primarily to ensure that it does not cause detrimental effects to the relevant mechanical and physical properties of the polymer depending upon the intended application. Furthermore, its biocompatibility with adjacent tissues and its excretion from the body require thorough evaluation. We aimed to summarize the current knowledge on contrast agents incorporated into synthetic polymers in the context of implantable medical devices. While a single review was found that discussed radiopacity in polymeric biomaterials, the publication is outdated and does not address contemporary polymers employed in implant applications. Our review provides an up-to-date overview of contrast agents incorporated into synthetic medical polymers, encompassing both temporary and permanent implants. We expect that our results will significantly inform and guide the strategic selection of contrast agents, considering the specific requirements of implantable polymeric medical devices.
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Affiliation(s)
- Crystal Kayaro Emonde
- Laboratory
for Biomechanics and Biomaterials (LBB), Hannover Medical School, Anna-von-Borries-Strasse 1-7, 30625 Hannover, Germany
| | - Max-Enno Eggers
- Institute
of Production Engineering and Machine Tools, Leibniz University Hannover, An der Universität 2, 30823 Garbsen, Hannover, Germany
| | - Marcel Wichmann
- Institute
of Production Engineering and Machine Tools, Leibniz University Hannover, An der Universität 2, 30823 Garbsen, Hannover, Germany
| | - Christof Hurschler
- Laboratory
for Biomechanics and Biomaterials (LBB), Hannover Medical School, Anna-von-Borries-Strasse 1-7, 30625 Hannover, Germany
| | - Max Ettinger
- Department
of Orthopedic Surgery − DIAKOVERE Annastift, Hannover Medical School, Anna-von-Borries-Strasse 1-7, 30625 Hannover, Germany
| | - Berend Denkena
- Institute
of Production Engineering and Machine Tools, Leibniz University Hannover, An der Universität 2, 30823 Garbsen, Hannover, Germany
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Pawelec KM, Tu E, Chakravarty S, Hix JML, Buchanan L, Kenney L, Buchanan F, Chatterjee N, Das S, Alessio A, Shapiro EM. Incorporating Tantalum Oxide Nanoparticles into Implantable Polymeric Biomedical Devices for Radiological Monitoring. Adv Healthc Mater 2023; 12:e2203167. [PMID: 36848875 PMCID: PMC10460461 DOI: 10.1002/adhm.202203167] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2022] [Revised: 02/19/2023] [Indexed: 03/01/2023]
Abstract
Longitudinal radiological monitoring of biomedical devices is increasingly important, driven by the risk of device failure following implantation. Polymeric devices are poorly visualized with clinical imaging, hampering efforts to use diagnostic imaging to predict failure and enable intervention. Introducing nanoparticle contrast agents into polymers is a potential method for creating radiopaque materials that can be monitored via computed tomography. However, the properties of composites may be altered with nanoparticle addition, jeopardizing device functionality. Thus, the material and biomechanical responses of model nanoparticle-doped biomedical devices (phantoms), created from 0-40 wt% tantalum oxide (TaOx ) nanoparticles in polycaprolactone and poly(lactide-co-glycolide) 85:15 and 50:50, representing non, slow, and fast degrading systems, respectively, are investigated. Phantoms degrade over 20 weeks in vitro in simulated physiological environments: healthy tissue (pH 7.4), inflammation (pH 6.5), and lysosomal conditions (pH 5.5), while radiopacity, structural stability, mechanical strength, and mass loss are monitored. The polymer matrix determines overall degradation kinetics, which increases with lower pH and higher TaOx content. Importantly, all radiopaque phantoms could be monitored for a full 20 weeks. Phantoms implanted in vivo and serially imaged demonstrate similar results. An optimal range of 5-20 wt% TaOx nanoparticles balances radiopacity requirements with implant properties, facilitating next-generation biomedical devices.
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Affiliation(s)
- Kendell M. Pawelec
- Department of RadiologyMichigan State University846 Service RdEast LansingMI48824USA
| | - Ethan Tu
- Department of Biomedical EngineeringMichigan State University775 Woodlot DrEast LansingMI48824USA
| | - Shatadru Chakravarty
- Department of RadiologyMichigan State University846 Service RdEast LansingMI48824USA
- Present address:
TechInsightsSuite 500, 1891 Robertson RdNepeanONK2H 5B7Canada
| | - Jeremy M. L. Hix
- Department of RadiologyMichigan State University846 Service RdEast LansingMI48824USA
- Institute for Quantitative Health Science and Engineering (IQ)Michigan State University775 Woodlot DrEast LansingMI48824USA
| | - Lane Buchanan
- Department of RadiologyMichigan State University846 Service RdEast LansingMI48824USA
| | - Legend Kenney
- Department of Biomedical EngineeringMichigan State University775 Woodlot DrEast LansingMI48824USA
| | - Foster Buchanan
- Department of RadiologyMichigan State University846 Service RdEast LansingMI48824USA
- Present address:
Lake Erie College of Osteopathic Medicine1858 W Grandview BlvdEriePA16509USA
| | - Nandini Chatterjee
- Department of RadiologyMichigan State University846 Service RdEast LansingMI48824USA
| | - Subhashri Das
- Department of RadiologyMichigan State University846 Service RdEast LansingMI48824USA
| | - Adam Alessio
- Department of RadiologyMichigan State University846 Service RdEast LansingMI48824USA
- Department of Biomedical EngineeringMichigan State University775 Woodlot DrEast LansingMI48824USA
- Department of Computational Mathematics Science EngineeringMichigan State University428 S. Shaw LnEast LansingMI48824USA
| | - Erik M. Shapiro
- Department of RadiologyMichigan State University846 Service RdEast LansingMI48824USA
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Overview of Antimicrobial Biodegradable Polyester-Based Formulations. Int J Mol Sci 2023; 24:ijms24032945. [PMID: 36769266 PMCID: PMC9917530 DOI: 10.3390/ijms24032945] [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: 11/29/2022] [Revised: 01/18/2023] [Accepted: 01/21/2023] [Indexed: 02/05/2023] Open
Abstract
As the clinical complications induced by microbial infections are known to have life-threatening side effects, conventional anti-infective therapy is necessary, but not sufficient to overcome these issues. Some of their limitations are connected to drug-related inefficiency or resistance and pathogen-related adaptive modifications. Therefore, there is an urgent need for advanced antimicrobials and antimicrobial devices. A challenging, yet successful route has been the development of new biostatic or biocide agents and biomaterials by considering the indisputable advantages of biopolymers. Polymers are attractive materials due to their physical and chemical properties, such as compositional and structural versatility, tunable reactivity, solubility and degradability, and mechanical and chemical tunability, together with their intrinsic biocompatibility and bioactivity, thus enabling the fabrication of effective pharmacologically active antimicrobial formulations. Besides representing protective or potentiating carriers for conventional drugs, biopolymers possess an impressive ability for conjugation or functionalization. These aspects are key for avoiding malicious side effects or providing targeted and triggered drug delivery (specific and selective cellular targeting), and generally to define their pharmacological efficacy. Moreover, biopolymers can be processed in different forms (particles, fibers, films, membranes, or scaffolds), which prove excellent candidates for modern anti-infective applications. This review contains an overview of antimicrobial polyester-based formulations, centered around the effect of the dimensionality over the properties of the material and the effect of the production route or post-processing actions.
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Attia MF, Akasov R, Elbaz NM, Owens TC, Curtis EC, Panda S, Santos-Oliveira R, Alexis F, Kievit FM, Whitehead DC. Radiopaque Iodosilane-Coated Lipid Hybrid Nanoparticle Contrast Agent for Dual-Modality Ultrasound and X-ray Bioimaging. ACS APPLIED MATERIALS & INTERFACES 2022; 14:54389-54400. [PMID: 36449986 DOI: 10.1021/acsami.2c09104] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Here, we report the synthesis of robust hybrid iodinated silica-lipid nanoemulsions (HSLNEs) for use as a contrast agent for ultrasound and X-ray applications. We engineered iodinated silica nanoparticles (SNPs), lipid nanoemulsions, and a series of HSLNEs by a low-energy spontaneous nanoemulsification process. The formation of a silica shell requires sonication to hydrolyze and polymerize/condensate the iodomethyltrimethoxysilane at the oil/water interface of the nanoemulsion droplets. The resulting nanoemulsions (NEs) exhibited a homogeneous spherical morphology under transmission electron microscopy. The particles had diameters ranging from 20 to 120 nm with both negative and positive surface charges in the absence and presence of cetyltrimethylammonium bromide (CTAB), respectively. Unlike CTAB-coated nanoformulations, the CTAB-free NEs showed excellent biocompatibility in murine RAW macrophages and human U87-MG cell lines in vitro. The maximum tolerated dose assessment was evaluated to verify their safety profiles in vivo. In vitro X-ray and ultrasound imaging and in vivo computed tomography were used to monitor both iodinated SNPs and HSLNEs, validating their significant contrast-enhancing properties and suggesting their potential as dual-modality clinical agents in the future.
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Affiliation(s)
- Mohamed F Attia
- Center for Nanotechnology in Drug Delivery and Division of Pharmacoengineering and Molecular Pharmaceutics, Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina27599, United States
| | - Roman Akasov
- Federal Scientific Research Centre "Crystallography and Photonics" of RAS, 59 Leninsky Avenue, Moscow119333, Russia
- I.M. Sechenov First Moscow State Medical University, Trubetskaya Street 8-2, Moscow119991, Russia
| | - Nancy M Elbaz
- Joint Department of Biomedical Engineering, University of North Carolina and North Carolina State University, Chapel Hill, North Carolina27599, United States
| | - Tyler C Owens
- Center for Nanotechnology in Drug Delivery and Division of Pharmacoengineering and Molecular Pharmaceutics, Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina27599, United States
| | - Evan C Curtis
- Department of Biological Systems Engineering, University of Nebraska-Lincoln, Lincoln, Nebraska68583-0900, United States
| | - Soham Panda
- Department of Chemistry, Clemson University, Clemson, South Carolina29634, United States
| | - Ralph Santos-Oliveira
- Brazilian Nuclear Energy Commission, Nuclear Engineering Institute, Argonauta Nuclear Reactor Center, Rio de Janeiro21941906, Brazil
- Laboratory of Radiopharmacy and Nanoradiopharmaceuticals, Zona Oeste State University, Rio de Janeiro23070-200, Brazil
| | - Frank Alexis
- Departamento de Ingeniería Química, Colegio de Ciencias e Ingenierías, Universidad San Francisco de Quito USFQ, Quito170901, Ecuador
| | - Forrest M Kievit
- Department of Biological Systems Engineering, University of Nebraska-Lincoln, Lincoln, Nebraska68583-0900, United States
| | - Daniel C Whitehead
- Department of Chemistry, Clemson University, Clemson, South Carolina29634, United States
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Górecka Ż, Grzelecki D, Paskal W, Choińska E, Gilewicz J, Wrzesień R, Macherzyński W, Tracz M, Budzińska-Wrzesień E, Bedyńska M, Kopka M, Jackowska-Tracz A, Świątek-Najwer E, Włodarski PK, Jaworowski J, Święszkowski W. Biodegradable Fiducial Markers for Bimodal Near-Infrared Fluorescence- and X-ray-Based Imaging. ACS Biomater Sci Eng 2022; 8:859-870. [PMID: 35020357 DOI: 10.1021/acsbiomaterials.1c01259] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
This study aimed to evaluate, for the first time, implantable, biodegradable fiducial markers (FMs), which were designed for bimodal, near-infrared fluorescence-based (NIRF) and X-ray-based imaging. The developed FMs had poly(l-lactide-co-caprolactone)-based core-shell structures made of radiopaque (core) and fluorescent (shell) composites with a poly(l-lactide-co-caprolactone) matrix. The approved for human use contrast agents were utilized as fillers. Indocyanine green was applied to the shell material, whereas in the core materials, iohexol and barium sulfate were compared. Moreover, the possibility of tailoring the stability of the properties of the core materials by the addition of hydroxyapatite (HAp) was examined. The performed in situ (porcine tissue) and in vivo experiment (rat model) confirmed that the developed FMs possessed pronounced contrasting properties in NIRF and X-ray imaging. The presence of HAp improved the radiopacity of FMs at the initial state. It was also proved that, in iohexol-containing FMs, the presence of HAp slightly decreased the stability of contrasting properties, while in BaSO4-containing ones, changes were less pronounced. A comprehensive material analysis explaining the differences in the stability of the contrasting properties was also presented. The tissue response around the FMs with composite cores was comparable to that of the FMs with a pristine polymeric core. The developed composite FMs did not cause serious adverse effects on the surrounding tissues even when irradiated in vivo. The developed FMs ensured good visibility for NIRF image-supported tumor surgery and the following X-ray image-guided radiotherapy. Moreover, this study replenishes a scanty report regarding similar biodegradable composite materials with a high potential for application.
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Affiliation(s)
- Żaneta Górecka
- Division of Materials Design, Faculty of Materials Science and Engineering, Warsaw University of Technology, 141 Woloska Str., 02-507 Warsaw, Poland.,Centre for Advanced Materials and Technologies CEZAMAT, Warsaw University of Technology, 02-822 Warsaw, Poland
| | - Dariusz Grzelecki
- Department of Applied Pharmacy, Medical University of Warsaw, 02-097 Warsaw, Poland.,Department of Orthopedics and Rheumoorthopedics, Professor Adam Gruca Teaching Hospital, Centre of Postgraduate Medical Education, 05-400 Otwock, Poland
| | - Wiktor Paskal
- Centre for Preclinical Research, The Department of Methodology, Medical University of Warsaw, 02-091 Warsaw, Poland
| | - Emilia Choińska
- Division of Materials Design, Faculty of Materials Science and Engineering, Warsaw University of Technology, 141 Woloska Str., 02-507 Warsaw, Poland
| | - Joanna Gilewicz
- Department of Applied Pharmacy, Medical University of Warsaw, 02-097 Warsaw, Poland
| | - Robert Wrzesień
- Central Laboratory of Experimental Animal, Medical University of Warsaw, 02-097 Warsaw, Poland
| | - Wojciech Macherzyński
- Faculty of Microsystem Electronics and Photonics, Wroclaw University of Science and Technology, 50-372 Wroclaw, Poland
| | - Michał Tracz
- Institute of Veterinary Medicine, Department of Food Hygiene and Public Health Protection, Warsaw University of Life Sciences, 02-776 Warsaw, Poland
| | | | - Maria Bedyńska
- Department of Applied Pharmacy, Medical University of Warsaw, 02-097 Warsaw, Poland
| | - Michał Kopka
- Centre for Preclinical Research, The Department of Methodology, Medical University of Warsaw, 02-091 Warsaw, Poland
| | - Agnieszka Jackowska-Tracz
- Institute of Veterinary Medicine, Department of Food Hygiene and Public Health Protection, Warsaw University of Life Sciences, 02-776 Warsaw, Poland
| | - Ewelina Świątek-Najwer
- Faculty of Mechanical Engineering, Wroclaw University of Science and Technology, 50-371 Wroclaw, Poland
| | - Paweł K Włodarski
- Centre for Preclinical Research, The Department of Methodology, Medical University of Warsaw, 02-091 Warsaw, Poland
| | - Janusz Jaworowski
- Department of Applied Pharmacy, Medical University of Warsaw, 02-097 Warsaw, Poland
| | - Wojciech Święszkowski
- Division of Materials Design, Faculty of Materials Science and Engineering, Warsaw University of Technology, 141 Woloska Str., 02-507 Warsaw, Poland
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9
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Djorgbenoo R, Rubio MMM, Yin Z, Moore KJ, Jayapalan A, Fiadorwu J, Collins BE, Velasco B, Allado K, Tsuruta JK, Gorman CB, Wei J, Johnson KA, He P. Amphiphilic phospholipid-iodinated polymer conjugates for bioimaging. Biomater Sci 2021; 9:5045-5056. [PMID: 34127999 DOI: 10.1039/d0bm02098b] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Amphiphilic phospholipid-iodinated polymer conjugates were designed and synthesized as new macromolecular probes for a highly radiopaque and biocompatible imaging technology. Bioconjugation of PEG 2000-phospholipids and iodinated polyesters by click chemistry created amphiphilic moieties with hydrophobic polyesters and hydrophilic PEG units, which allowed their self-assemblies into vesicles or spiked vesicles. More importantly, the conjugates exhibited high radiopacity and biocompatibility in in vitro X-ray and cell viability measurements. This new type of bioimaging contrast agent with a Mn value of 11 289 g mol-1 was found to have a significant X-ray signal at 3.13 mg mL-1 of iodine equivalent than baseline and no cytotoxicity after 48 hours incubation of with HEK and 3T3 cells at 20 μM (20 picomoles) concentration of conjugates per well. The potential of adopting the described macromolecular probes for bioimaging was demonstrated, which could further promote the development of a field-friendly and highly sensitive bioimaging contrast agent for point-of-care diagnostic applications.
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Affiliation(s)
- Richmond Djorgbenoo
- Department of Chemistry, North Carolina Agricultural and Technical State University, Greensboro, North Carolina 27411, USA.
| | - Mac Michael M Rubio
- Department of Chemistry, North Carolina Agricultural and Technical State University, Greensboro, North Carolina 27411, USA.
| | - Ziyu Yin
- Department of Nanoscience, Joint School of Nanoscience and Nanoengineering, University of North Carolina at Greensboro, Greensboro, North Carolina 27401, USA
| | - Keyori J Moore
- Department of Chemistry, North Carolina Agricultural and Technical State University, Greensboro, North Carolina 27411, USA.
| | - Anitha Jayapalan
- Department of Nanoscience, Joint School of Nanoscience and Nanoengineering, University of North Carolina at Greensboro, Greensboro, North Carolina 27401, USA
| | - Joshua Fiadorwu
- Department of Chemistry, North Carolina Agricultural and Technical State University, Greensboro, North Carolina 27411, USA.
| | - Boyce E Collins
- Engineering Research Center for Revolutionizing Biomaterials, North Carolina Agricultural and Technical State University, Greensboro, North Carolina 27411, USA
| | - Brian Velasco
- Joint Department of Biomedical Engineering, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, USA.
| | - Kokougan Allado
- Department of Nanoscience, Joint School of Nanoscience and Nanoengineering, University of North Carolina at Greensboro, Greensboro, North Carolina 27401, USA
| | - James K Tsuruta
- Joint Department of Biomedical Engineering, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, USA.
| | - Christopher B Gorman
- Department of Chemistry, North Carolina State University, Raleigh, North Carolina 27695, USA
| | - Jianjun Wei
- Department of Nanoscience, Joint School of Nanoscience and Nanoengineering, University of North Carolina at Greensboro, Greensboro, North Carolina 27401, USA
| | - Kennita A Johnson
- Joint Department of Biomedical Engineering, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, USA.
| | - Peng He
- Department of Chemistry, North Carolina Agricultural and Technical State University, Greensboro, North Carolina 27411, USA.
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10
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Alves CL, Oliveira JS, Tannus A, Tarpani ACSP, Tarpani JR. Detection and Imaging of Damages and Defects in Fibre-Reinforced Composites by Magnetic Resonance Technique. MATERIALS 2021; 14:ma14040977. [PMID: 33669603 PMCID: PMC7921926 DOI: 10.3390/ma14040977] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/06/2020] [Revised: 07/31/2020] [Accepted: 08/03/2020] [Indexed: 11/22/2022]
Abstract
Defectively manufactured and deliberately damaged composite laminates fabricated with different continuous reinforcing fibres (respectively, carbon and glass) and polymer matrices (respectively, thermoset and thermoplastic) were inspected in magnetic resonance imaging equipment. Two pulse sequences were evaluated during non-destructive examination conducted in saline solution-immersed samples to simulate load-bearing orthopaedic implants permanently in contact with biofluids. The orientation, positioning, shape, and especially the size of translaminar and delamination fractures were determined according to stringent structural assessment criteria. The spatial distribution, shape, and contours of water-filled voids were sufficiently delineated to infer the amount of absorbed water if thinner image slices than this study were used. The surface texture of composite specimens featuring roughness, waviness, indentation, crushing, and scratches was outlined, with fortuitous artefacts not impairing the image quality and interpretation. Low electromagnetic shielding glass fibres delivered the highest, while electrically conductive carbon fibres produced the poorest quality images, particularly when blended with thermoplastic polymer, though reliable image interpretation was still attainable.
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Affiliation(s)
- Carine L. Alves
- Materials Engineering Department, Engineering School of São Carlos, University of São Paulo, São Carlos, SP 13590-566, Brazil; (C.L.A.); (J.S.O.); (A.C.S.P.T.)
| | - Janete S. Oliveira
- Materials Engineering Department, Engineering School of São Carlos, University of São Paulo, São Carlos, SP 13590-566, Brazil; (C.L.A.); (J.S.O.); (A.C.S.P.T.)
| | - Alberto Tannus
- Physics and Informatics Department, Physics Institute of São Carlos, University of São Paulo, São Carlos, SP 13590-566, Brazil;
| | - Alessandra Cristina Soares P. Tarpani
- Materials Engineering Department, Engineering School of São Carlos, University of São Paulo, São Carlos, SP 13590-566, Brazil; (C.L.A.); (J.S.O.); (A.C.S.P.T.)
| | - José R. Tarpani
- Materials Engineering Department, Engineering School of São Carlos, University of São Paulo, São Carlos, SP 13590-566, Brazil; (C.L.A.); (J.S.O.); (A.C.S.P.T.)
- Correspondence:
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Fletcher GK, Nash LD, Graul LM, Jang LK, Herting SM, Wilcox MD, Touchet TJ, Sweatt AK, McDougall MP, Wright SM, Maitland DJ. Chemical Modifications of Porous Shape Memory Polymers for Enhanced X-ray and MRI Visibility. Molecules 2020; 25:E4660. [PMID: 33066091 PMCID: PMC7587375 DOI: 10.3390/molecules25204660] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2020] [Revised: 10/07/2020] [Accepted: 10/12/2020] [Indexed: 12/02/2022] Open
Abstract
The goal of this work was to develop a shape memory polymer (SMP) foam with visibility under both X-ray and magnetic resonance imaging (MRI) modalities. A porous polymeric material with these properties is desirable in medical device development for applications requiring thermoresponsive tissue scaffolds with clinical imaging capabilities. Dual modality visibility was achieved by chemically incorporating monomers with X-ray visible iodine-motifs and MRI visible monomers with gadolinium content. Physical and thermomechanical characterization showed the effect of increased gadopentetic acid (GPA) on shape memory behavior. Multiple compositions showed brightening effects in pilot, T1-weighted MR imaging. There was a correlation between the polymeric density and X-ray visibility on expanded and compressed SMP foams. Additionally, extractions and indirect cytocompatibility studies were performed to address toxicity concerns of gadolinium-based contrast agents (GBCAs). This material platform has the potential to be used in a variety of medical devices.
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Affiliation(s)
- Grace K. Fletcher
- Texas A&M University Biomedical Engineering, Bizzell St, College Station, TX 77843, USA; (G.K.F.); (L.M.G.); (L.K.J.); (S.M.H.); (M.D.W.); (T.J.T.); (A.K.S.); (M.P.M.); (S.M.W.)
| | | | - Lance M. Graul
- Texas A&M University Biomedical Engineering, Bizzell St, College Station, TX 77843, USA; (G.K.F.); (L.M.G.); (L.K.J.); (S.M.H.); (M.D.W.); (T.J.T.); (A.K.S.); (M.P.M.); (S.M.W.)
| | - Lindy K. Jang
- Texas A&M University Biomedical Engineering, Bizzell St, College Station, TX 77843, USA; (G.K.F.); (L.M.G.); (L.K.J.); (S.M.H.); (M.D.W.); (T.J.T.); (A.K.S.); (M.P.M.); (S.M.W.)
| | - Scott M. Herting
- Texas A&M University Biomedical Engineering, Bizzell St, College Station, TX 77843, USA; (G.K.F.); (L.M.G.); (L.K.J.); (S.M.H.); (M.D.W.); (T.J.T.); (A.K.S.); (M.P.M.); (S.M.W.)
| | - Matthew D. Wilcox
- Texas A&M University Biomedical Engineering, Bizzell St, College Station, TX 77843, USA; (G.K.F.); (L.M.G.); (L.K.J.); (S.M.H.); (M.D.W.); (T.J.T.); (A.K.S.); (M.P.M.); (S.M.W.)
| | - Tyler J. Touchet
- Texas A&M University Biomedical Engineering, Bizzell St, College Station, TX 77843, USA; (G.K.F.); (L.M.G.); (L.K.J.); (S.M.H.); (M.D.W.); (T.J.T.); (A.K.S.); (M.P.M.); (S.M.W.)
| | - Ana Katarina Sweatt
- Texas A&M University Biomedical Engineering, Bizzell St, College Station, TX 77843, USA; (G.K.F.); (L.M.G.); (L.K.J.); (S.M.H.); (M.D.W.); (T.J.T.); (A.K.S.); (M.P.M.); (S.M.W.)
| | - Mary P. McDougall
- Texas A&M University Biomedical Engineering, Bizzell St, College Station, TX 77843, USA; (G.K.F.); (L.M.G.); (L.K.J.); (S.M.H.); (M.D.W.); (T.J.T.); (A.K.S.); (M.P.M.); (S.M.W.)
- Texas A&M University Electrical and Computer Engineering, Bizzell St, College Station, TX 77843, USA
| | - Steven M. Wright
- Texas A&M University Biomedical Engineering, Bizzell St, College Station, TX 77843, USA; (G.K.F.); (L.M.G.); (L.K.J.); (S.M.H.); (M.D.W.); (T.J.T.); (A.K.S.); (M.P.M.); (S.M.W.)
- Texas A&M University Electrical and Computer Engineering, Bizzell St, College Station, TX 77843, USA
| | - Duncan J. Maitland
- Texas A&M University Biomedical Engineering, Bizzell St, College Station, TX 77843, USA; (G.K.F.); (L.M.G.); (L.K.J.); (S.M.H.); (M.D.W.); (T.J.T.); (A.K.S.); (M.P.M.); (S.M.W.)
- Shape Memory Medical Inc., Santa Clara, CA 95054, USA;
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Ishizawa K, Togami K, Tada H, Chono S. Multiscale Live Imaging Using Förster Resonance Energy Transfer (FRET) for Evaluating the Biological Behavior of Nanoparticles as Drug Carriers. J Pharm Sci 2020; 109:3608-3616. [PMID: 32926888 DOI: 10.1016/j.xphs.2020.08.028] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2020] [Revised: 07/28/2020] [Accepted: 08/25/2020] [Indexed: 12/21/2022]
Abstract
To develop targeted drug delivery systems using nanoparticles for treating various diseases, the evaluation of nanoparticle behavior in biological environments is necessary. In the present study, the biological behavior of polymeric nanoparticles was directly traced in living mice and cells. The dissociation of nanoparticles was detected by Förster resonance energy transfer (FRET) imaging. DiR and DiD were encapsulated in the nanoparticles for near-infrared FRET imaging, and they were traced using in vivo FRET imaging and intravital FRET imaging at the whole-body and tissue scales, respectively. In vivo FRET imaging revealed that the nanoparticles dissociated over time following intravenous administration. Intravital FRET imaging revealed that the nanoparticles dissociated in the liver and blood vessels following intravenous administration. DiI and DiO were encapsulated in nanoparticles for FRET imaging using confocal microscopy, and they were traced using in vitro FRET imaging in HepG2 cells. In vitro FRET imaging revealed that the nanoparticles dissociated and released fluorescent dyes that distributed in the cell membrane. Finally, live imaging was performed using FRET at the whole-body, tissue, and cellular scales. This method is suitable for obtaining information regarding the biological kinetic properties of nanoparticles and their use in targeted drug delivery.
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Affiliation(s)
- Kiyomi Ishizawa
- Division of Pharmaceutics, Hokkaido University of Science, 7-Jo 15-4-1 Maeda, Teine, Sapporo, Hokkaido 006-8585, Japan
| | - Kohei Togami
- Division of Pharmaceutics, Hokkaido University of Science, 7-Jo 15-4-1 Maeda, Teine, Sapporo, Hokkaido 006-8585, Japan; Creation Research Institute of Life Science in KITA-no-DAICHI, 7-Jo 15-4-1 Maeda, Teine, Sapporo, Hokkaido 006-8585, Japan
| | - Hitoshi Tada
- Division of Pharmaceutics, Hokkaido University of Science, 7-Jo 15-4-1 Maeda, Teine, Sapporo, Hokkaido 006-8585, Japan
| | - Sumio Chono
- Division of Pharmaceutics, Hokkaido University of Science, 7-Jo 15-4-1 Maeda, Teine, Sapporo, Hokkaido 006-8585, Japan; Creation Research Institute of Life Science in KITA-no-DAICHI, 7-Jo 15-4-1 Maeda, Teine, Sapporo, Hokkaido 006-8585, Japan.
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Burton TF, Pinaud J, Giani O. Rapid and Controlled Organocatalyzed Ring-Opening Polymerization of 3S-(Isobutyl)morpholine-2,5-dione and Copolymerization with Lactide. Macromolecules 2020. [DOI: 10.1021/acs.macromol.0c00940] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Tobias F. Burton
- ICGM, Univversité de Montpellier, CNRS, ENSCM, Montpellier 34095, France
| | - Julien Pinaud
- ICGM, Univversité de Montpellier, CNRS, ENSCM, Montpellier 34095, France
| | - Olivia Giani
- ICGM, Univversité de Montpellier, CNRS, ENSCM, Montpellier 34095, France
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