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Lei M, Wan H, Song J, Lu Y, Chang R, Wang H, Zhou H, Zhang X, Liu C, Qu X. Programmable Electro-Assembly of Collagen: Constructing Porous Janus Films with Customized Dual Signals for Immunomodulation and Tissue Regeneration in Periodontitis Treatment. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024; 11:e2305756. [PMID: 38189598 PMCID: PMC10987108 DOI: 10.1002/advs.202305756] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/16/2023] [Revised: 12/22/2023] [Indexed: 01/09/2024]
Abstract
Currently available guided bone regeneration (GBR) films lack active immunomodulation and sufficient osteogenic ability- in the treatment of periodontitis, leading to unsatisfactory treatment outcomes. Challenges remain in developing simple, rapid, and programmable manufacturing methods for constructing bioactive GBR films with tailored biofunctional compositions and microstructures. Herein, the controlled electroassembly of collagen under the salt effect is reported, which enables the construction of porous films with precisely tunable porous structures (i.e., porosity and pore size). In particular, bioactive salt species such as the anti-inflammatory drug diclofenac sodium (DS) can induce and customize porous structures while enabling the loading of bioactive salts and their gradual release. Sequential electro-assembly under pre-programmed salt conditions enables the manufacture of a Janus composite film with a dense and DS-containing porous layer capable of multiple functions in periodontitis treatment, which provides mechanical support, guides fibrous tissue growth, and acts as a barrier preventing its penetration into bone defects. The DS-containing porous layer delivers dual bio-signals through its morphology and the released DS, inhibiting inflammation and promoting osteogenesis. Overall, this study demonstrates the potential of electrofabrication as a customized manufacturing platform for the programmable assembly of collagen for tailored functions to adapt to specific needs in regenerative medicine.
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Affiliation(s)
- Miao Lei
- Key Laboratory for Ultrafine Materials of Ministry of EducationFrontiers Science Center for Materiobiology and Dynamic ChemistrySchool of materials science and engineeringEast China University of Science and TechnologyShanghai200237China
| | - Haoran Wan
- Key Laboratory for Ultrafine Materials of Ministry of EducationFrontiers Science Center for Materiobiology and Dynamic ChemistrySchool of materials science and engineeringEast China University of Science and TechnologyShanghai200237China
| | - Jia Song
- Department of Dental Materials & Dental Medical Devices Testing CenterNMPA Key Laboratory for Dental MaterialsPeking University School and Hospital of StomatologyBeijing100081China
| | - Yanhui Lu
- Department of Dental Materials & Dental Medical Devices Testing CenterNMPA Key Laboratory for Dental MaterialsPeking University School and Hospital of StomatologyBeijing100081China
| | - Ronghang Chang
- Key Laboratory for Ultrafine Materials of Ministry of EducationFrontiers Science Center for Materiobiology and Dynamic ChemistrySchool of materials science and engineeringEast China University of Science and TechnologyShanghai200237China
| | - Honglei Wang
- Key Laboratory for Ultrafine Materials of Ministry of EducationFrontiers Science Center for Materiobiology and Dynamic ChemistrySchool of materials science and engineeringEast China University of Science and TechnologyShanghai200237China
| | - Hang Zhou
- Key Laboratory for Ultrafine Materials of Ministry of EducationFrontiers Science Center for Materiobiology and Dynamic ChemistrySchool of materials science and engineeringEast China University of Science and TechnologyShanghai200237China
| | - Xuehui Zhang
- Department of Dental Materials & Dental Medical Devices Testing CenterNMPA Key Laboratory for Dental MaterialsPeking University School and Hospital of StomatologyBeijing100081China
| | - Changsheng Liu
- Key Laboratory for Ultrafine Materials of Ministry of EducationFrontiers Science Center for Materiobiology and Dynamic ChemistrySchool of materials science and engineeringEast China University of Science and TechnologyShanghai200237China
| | - Xue Qu
- Key Laboratory for Ultrafine Materials of Ministry of EducationFrontiers Science Center for Materiobiology and Dynamic ChemistrySchool of materials science and engineeringEast China University of Science and TechnologyShanghai200237China
- Shanghai Frontier Science Research Base of Optogenetic Techniques for Cell MetabolismEast China University of Science and TechnologyShanghai200237China
- Wenzhou Institute of Shanghai UniversityWenzhou325000China
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den Roover S, Aerts JL. Unveiling the intricacies of gene delivery: Caveolae-mediated endocytosis induces efficient mRNA delivery in slow-dividing cells. MOLECULAR THERAPY. NUCLEIC ACIDS 2023; 33:545-547. [PMID: 37588687 PMCID: PMC10425612 DOI: 10.1016/j.omtn.2023.07.024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Indexed: 08/18/2023]
Affiliation(s)
- Sabine den Roover
- Neuro-Aging & Viro-Immunotherapy (NAVI) Research Group, Vrije Universiteit Brussel, Brussels, Belgium
| | - Joeri L. Aerts
- Neuro-Aging & Viro-Immunotherapy (NAVI) Research Group, Vrije Universiteit Brussel, Brussels, Belgium
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Ashammakhi N, GhavamiNejad A, Tutar R, Fricker A, Roy I, Chatzistavrou X, Hoque Apu E, Nguyen KL, Ahsan T, Pountos I, Caterson EJ. Highlights on Advancing Frontiers in Tissue Engineering. TISSUE ENGINEERING. PART B, REVIEWS 2022; 28:633-664. [PMID: 34210148 PMCID: PMC9242713 DOI: 10.1089/ten.teb.2021.0012] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/20/2021] [Accepted: 07/15/2021] [Indexed: 01/05/2023]
Abstract
The field of tissue engineering continues to advance, sometimes in exponential leaps forward, but also sometimes at a rate that does not fulfill the promise that the field imagined a few decades ago. This review is in part a catalog of success in an effort to inform the process of innovation. Tissue engineering has recruited new technologies and developed new methods for engineering tissue constructs that can be used to mitigate or model disease states for study. Key to this antecedent statement is that the scientific effort must be anchored in the needs of a disease state and be working toward a functional product in regenerative medicine. It is this focus on the wildly important ideas coupled with partnered research efforts within both academia and industry that have shown most translational potential. The field continues to thrive and among the most important recent developments are the use of three-dimensional bioprinting, organ-on-a-chip, and induced pluripotent stem cell technologies that warrant special attention. Developments in the aforementioned areas as well as future directions are highlighted in this article. Although several early efforts have not come to fruition, there are good examples of commercial profitability that merit continued investment in tissue engineering. Impact statement Tissue engineering led to the development of new methods for regenerative medicine and disease models. Among the most important recent developments in tissue engineering are the use of three-dimensional bioprinting, organ-on-a-chip, and induced pluripotent stem cell technologies. These technologies and an understanding of them will have impact on the success of tissue engineering and its translation to regenerative medicine. Continued investment in tissue engineering will yield products and therapeutics, with both commercial importance and simultaneous disease mitigation.
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Affiliation(s)
- Nureddin Ashammakhi
- Department of Bioengineering, Henry Samueli School of Engineering, University of California, Los Angeles, California, USA
- Department of Biomedical Engineering, College of Engineering, Michigan State University, Michigan, USA
| | - Amin GhavamiNejad
- Advanced Pharmaceutics and Drug Delivery Laboratory, Leslie L. Dan Faculty of Pharmacy, University of Toronto, Toronto, Canada
| | - Rumeysa Tutar
- Department of Chemistry, Faculty of Engineering, Istanbul University-Cerrahpasa, Istanbul, Turkey
| | - Annabelle Fricker
- Department of Materials Science and Engineering, Faculty of Engineering, University of Sheffield, Sheffield, United Kingdom
| | - Ipsita Roy
- Department of Materials Science and Engineering, Faculty of Engineering, University of Sheffield, Sheffield, United Kingdom
- Faculty of Medicine, National Heart and Lung Institute, Imperial College London, London, United Kingdom
| | - Xanthippi Chatzistavrou
- Department of Chemical Engineering and Material Science, College of Engineering, Michigan State University, East Lansing, Michigan, USA
| | - Ehsanul Hoque Apu
- Department of Bioengineering, Henry Samueli School of Engineering, University of California, Los Angeles, California, USA
| | - Kim-Lien Nguyen
- Department of Radiological Sciences, David Geffen School of Medicine, University of California, Los Angeles, California, USA
- Division of Cardiology, David Geffen School of Medicine, University of California, Los Angeles, and VA Greater Los Angeles Healthcare System, Los Angeles, California, USA
| | - Taby Ahsan
- RoosterBio, Inc., Frederick, Maryland, USA
| | - Ippokratis Pountos
- Academic Department of Trauma and Orthopaedics, University of Leeds, Leeds, United Kingdom
| | - Edward J. Caterson
- Division of Plastic Surgery, Department of Surgery, Nemours/Alfred I. du Pont Hospital for Children, Wilmington, Delaware, USA
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Guzik MW. Polyhydroxyalkanoates, bacterially synthesized polymers, as a source of chemical compounds for the synthesis of advanced materials and bioactive molecules. Appl Microbiol Biotechnol 2021; 105:7555-7566. [PMID: 34536102 PMCID: PMC8502142 DOI: 10.1007/s00253-021-11589-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2021] [Revised: 09/08/2021] [Accepted: 09/10/2021] [Indexed: 11/26/2022]
Abstract
Research into polyhydroxyalkanoates (PHAs) is growing exponentially. These bacterially derived polyesters offer a spectrum of possible applications, such as in manufacturing of daily-use objects, production of medical devices and implantable objects, or as synthons in chemical and pharmaceutical industries. Thanks to their broad physicochemical features, PHAs can be seen as polymers of the future, which can replace traditional petrochemical equivalents. As they are synthesized by bacteria through fermentation processes, these polyesters can be obtained from virtually any carbon source in a sustainable manner. Characterized by biodegradability and biocompatibility, they are used in many industries, ranging from production of everyday objects to medical applications. Furthermore, as they are built from bioactive monomers, namely (R)-3-hydroxyacids, they provide a platform for the synthesis of advanced chemical compounds. In this mini review, the reader will be acquainted with recent studies conducted at the Jerzy Haber Institute of Catalysis and Surface Chemistry of the Polish Academy of Sciences in collaboration with other groups that have contributed to the development of PHA-based medical materials, bioactive molecules and novel green solvents derived from PHA monomers.Key points• Polyhydroxyalkanoates are emerging polymers for biomedical applications• Polyhydroxyalkanoates can be modified easily to provide novel materials• (R)-3-Hydroxyacids are good synthons for bioactive substances and green solvents.
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Affiliation(s)
- Maciej W Guzik
- Jerzy Haber Institute of Catalysis and Surface Chemistry Polish Academy of Sciences, Niezapominajek 8, 30-239, Kraków, Poland.
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Soares GODN, Lima FA, Goulart GAC, Oréfice RL. Physicochemical characterization of the gelatin/polycaprolactone nanofibers loaded with diclofenac potassium for topical use aiming potential anti-inflammatory action. INT J POLYM MATER PO 2021. [DOI: 10.1080/00914037.2021.1962875] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
| | - Flávia Alves Lima
- Department of Pharmaceutics, Faculty of Pharmacy, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Gisele Assis Castro Goulart
- Department of Pharmaceutics, Faculty of Pharmacy, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Rodrigo Lambert Oréfice
- Department of Metallurgical, Materials and Mining Engineering, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
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Opálková Šišková A, Bučková M, Kroneková Z, Kleinová A, Nagy Š, Rydz J, Opálek A, Sláviková M, Eckstein Andicsová A. The Drug-Loaded Electrospun Poly(ε-Caprolactone) Mats for Therapeutic Application. NANOMATERIALS 2021; 11:nano11040922. [PMID: 33916638 PMCID: PMC8066245 DOI: 10.3390/nano11040922] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/25/2021] [Revised: 03/31/2021] [Accepted: 04/01/2021] [Indexed: 11/16/2022]
Abstract
Diclofenac sodium salt (DSS)-loaded electrospun nanofiber mats on the base of poly(ε-caprolactone) (PCL) were investigated as biocompatible nanofibrous mats for medical applications with the ability to inhibit bacterial infections. The paper presents the characteristics of fibrous mats made by electrospinning and determines the effect of medicament on the fiber morphology, chemical, mechanical and thermal properties, as well as wettability. PCL and DSS-loaded PCL nanofibrous mats were characterized using scanning electron microscopy, transmission electron microscopy, attenuated total reflectance-Fourier transform infrared spectrometry, dynamic mechanical analysis, and contact angle measurements. Electron paramagnetic resonance measurements confirmed the lifetime of DSS before and after application of high voltage during the electrospinning process. In vitro biocompatibility was studied, and it was proved to be of good viability with ~92% of the diploid human cells culture line composed of lung fibroblast (MRC 5) after 48 h of incubation. Moreover, the significant activity of DSS-loaded nanofibers against cancer cells, Ca Ski and HeLa, was established as well. It was shown that 12.5% (m/V) is the minimal concentration for antibacterial activity when more than 99% of Escherichia coli (Gram-negative) and 99% of Staphylococcus aureus (Gram-positive) have been exterminated.
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Affiliation(s)
- Alena Opálková Šišková
- Polymer Institute of Slovak Academy of Sciences, Dúbravská Cesta 9, 845 41 Bratislava, Slovakia; (Z.K.); (A.K.)
- Correspondence: (A.O.S.); (A.E.A.); Tel.: +421-2-3229-4301 (A.O.S.); +421-2-3229-4357 (A.E.A.)
| | - Mária Bučková
- Institute of Molecular Biology, Slovak Academy of Sciences, Dúbravská Cesta 9, 845 51 Bratislava, Slovakia;
| | - Zuzana Kroneková
- Polymer Institute of Slovak Academy of Sciences, Dúbravská Cesta 9, 845 41 Bratislava, Slovakia; (Z.K.); (A.K.)
| | - Angela Kleinová
- Polymer Institute of Slovak Academy of Sciences, Dúbravská Cesta 9, 845 41 Bratislava, Slovakia; (Z.K.); (A.K.)
| | - Štefan Nagy
- Institute of Materials and Machine Mechanics, Slovak Academy of Sciences, Dúbravská Cesta 9, 845 13 Bratislava, Slovakia; (Š.N.); (A.O.)
| | - Joanna Rydz
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, M. Curie-Skłodowska 34, 41-800 Zabrze, Poland;
| | - Andrej Opálek
- Institute of Materials and Machine Mechanics, Slovak Academy of Sciences, Dúbravská Cesta 9, 845 13 Bratislava, Slovakia; (Š.N.); (A.O.)
| | - Monika Sláviková
- Institute of Virology, Biomedical Research Center, Slovak Academy of Sciences, Dúbravská Cesta 9, 845 05 Bratislava, Slovakia;
| | - Anita Eckstein Andicsová
- Polymer Institute of Slovak Academy of Sciences, Dúbravská Cesta 9, 845 41 Bratislava, Slovakia; (Z.K.); (A.K.)
- Correspondence: (A.O.S.); (A.E.A.); Tel.: +421-2-3229-4301 (A.O.S.); +421-2-3229-4357 (A.E.A.)
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7
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Reich KM, Viitanen P, Apu EH, Tangl S, Ashammakhi N. The Effect of Diclofenac Sodium-Loaded PLGA Rods on Bone Healing and Inflammation: A Histological and Histomorphometric Study in the Femur of Rats. MICROMACHINES 2020; 11:mi11121098. [PMID: 33322731 PMCID: PMC7764049 DOI: 10.3390/mi11121098] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/11/2020] [Revised: 12/07/2020] [Accepted: 12/10/2020] [Indexed: 12/03/2022]
Abstract
Implants made of poly(lactide-co-glycolide) (PLGA) are biodegradable and frequently provoke foreign body reactions (FBR) in the host tissue. In order to modulate the inflammatory response of the host tissue, PLGA implants can be loaded with anti-inflammatory drugs. The aim of this study was to analyze the impact of PLGA 80/20 rods loaded with the diclofenac sodium (DS) on local tissue reactions in the femur of rats. Special emphasis was put on bone regeneration and the presence of multinucleated giant cells (MGCs) associated with FBR. PLGA 80/20 alone and PLGA 80/20 combined with DS was extruded into rods. PLGA rods loaded with DS (PLGA+DS) were implanted into the femora of 18 rats. Eighteen control rats received unloaded PLGA rods. The follow-up period was of 3, 6 and 12 weeks. Each group comprised of six rats. Peri-implant tissue reactions were histologically and histomorphometrically evaluated. The implantation of PLGA and PLGA+DS8 rods induced the formation of a layer of newly formed bone islands parallel to the contour of the implants. PLGA+DS rods tended to reduce the presence of multi-nucleated giant cells (MGCs) at the implant surface. Although it is known that the systemic administration of DS is associated with compromised bone healing, the local release of DS via PLGA rods did not have negative effects on bone regeneration in the femora of rats throughout 12 weeks.
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Affiliation(s)
- Karoline M. Reich
- Karl Donath Laboratory for Hard Tissue and Biomaterial Research, Division of Oral Surgery, University Clinic of Dentistry, Medical University of Vienna, 1090 Vienna, Austria;
- Austrian Cluster for Tissue Regeneration, 1200 Vienna, Austria
| | - Petrus Viitanen
- Institute of Biomaterials, Tampere University of Technology, 33101 Tampere, Finland;
| | - Ehsanul Hoque Apu
- Laboratory of Developmental Biology, Faculty of Biochemistry and Molecular Medicine, University of Oulu, 90220 Oulu, Finland;
- Institute for Quantitative Health Science and Engineering, Department of Biomedical Engineering, Michigan State University, East Lansing, MI 48824, USA
| | - Stefan Tangl
- Karl Donath Laboratory for Hard Tissue and Biomaterial Research, Division of Oral Surgery, University Clinic of Dentistry, Medical University of Vienna, 1090 Vienna, Austria;
- Austrian Cluster for Tissue Regeneration, 1200 Vienna, Austria
- Correspondence: (S.T.); (N.A.)
| | - Nureddin Ashammakhi
- Division of Plastic Surgery, Department of Surgery, Oulu University Hospital, 90220 Oulu, Finland
- Center for Minimally Invasive Therapeutics (C-MIT), University of California, Los Angeles, CA 90095, USA
- Department of Bioengineering, University of California, Los Angeles, CA 90095, USA
- Department of Biomedical Engineering, Michigan State University, East Lansing, MI 48824, USA
- Correspondence: (S.T.); (N.A.)
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Poly(vinyl alcohol boric acid)-Diclofenac Sodium Salt Drug Delivery Systems: Experimental and Theoretical Studies. J Immunol Res 2020; 2020:3124304. [PMID: 32566687 PMCID: PMC7281821 DOI: 10.1155/2020/3124304] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2020] [Revised: 04/14/2020] [Accepted: 04/24/2020] [Indexed: 12/13/2022] Open
Abstract
The main aim of the paper was to simulate the drug release by a multifractal theoretical model, as a valuable method to assess the drug release mechanism. To do this, drug delivery films were prepared by mixing poly(vinyl alcohol boric acid) (PVAB) and diclofenac (DCF) sodium salt drug in different mass ratios from 90/10 to 70/30, in order to obtain drug delivery systems with different releasing rates. The different drug content of the three systems was confirmed by energy-dispersive spectroscopy (EDAX) analysis, and the encapsulation particularities were investigated by scanning electron microscopy (SEM), atomic force microscopy (AFM), and polarized optical microscopy (POM) techniques. The ability of the PVAB matrix to anchor the DCF was assessed by Fourier transform infrared (FTIR) spectroscopy. The in vitro release of the diclofenac sodium salt from the formulations was investigated in biomimetic conditions (pH = 7.4 and 37°C) by UV-Vis spectroscopy, measuring the absorbance of the drug at 275 nm and fitting the results on a previously drawn calibration curve. An estimation of the drug release kinetics was performed by fitting three traditional mathematical models on experimental release data. Further, the drug delivery was simulated by the fractal theory of motion, in which the release dynamics of the polymer-drug complex system is described through various Riccati-type "regimes." To explain such dynamics involved multifractal self-modulation in the form of period doubling, quasiperiodicity, intermittency, etc., as well as multifractal self-modulation of network type. Standard release dynamics were explained by multifractal behaviors of temporary kink type. The good correlation between the traditional mathematical models and the new proposed theoretical model demonstrated the validity of the multifractal model for the investigation of the drug release.
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Role of nanofibers on MSCs fate: Influence of fiber morphologies, compositions and external stimuli. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2020; 107:110218. [DOI: 10.1016/j.msec.2019.110218] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/11/2019] [Revised: 09/04/2019] [Accepted: 09/16/2019] [Indexed: 01/09/2023]
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10
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Poláková L, Širc J, Hobzová R, Cocârță AI, Heřmánková E. Electrospun nanofibers for local anticancer therapy: Review of in vivo activity. Int J Pharm 2019; 558:268-283. [PMID: 30611748 DOI: 10.1016/j.ijpharm.2018.12.059] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2018] [Revised: 12/18/2018] [Accepted: 12/19/2018] [Indexed: 12/18/2022]
Abstract
Currently, chemotherapy is the most common treatment for oncological diseases. Systemic administration of chemotherapeutics provides an easy and effective distribution of the active agents throughout the patient's body, however organs may be severely impaired by serious life-threatening side effects. In many oncological diseases, particularly solid tumors, the local application of chemotherapeutics would be advantageous. Recently, nanofibrous materials as local drug delivery systems have attracted much attention. They have considerable potential in the treatment of various cancers as they can provide a high concentration of the drug at the target site for a prolonged time, thereby lowering total exposure and adverse effects. The present review describes the specifics of drug delivery to the tumor microenvironment, basic characteristics of nanofibrous materials and their preparation, and comprehensively summarizes recent scientific reports concerning in vivo experiments with drug-loaded electrospun nanofibrous systems designed for local anticancer therapy.
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Affiliation(s)
- Lenka Poláková
- Institute of Macromolecular Chemistry, Czech Academy of Sciences, Heyrovského nám. 2, 162 06 Prague 6, Czech Republic
| | - Jakub Širc
- Institute of Macromolecular Chemistry, Czech Academy of Sciences, Heyrovského nám. 2, 162 06 Prague 6, Czech Republic
| | - Radka Hobzová
- Institute of Macromolecular Chemistry, Czech Academy of Sciences, Heyrovského nám. 2, 162 06 Prague 6, Czech Republic
| | - Ana-Irina Cocârță
- Institute of Macromolecular Chemistry, Czech Academy of Sciences, Heyrovského nám. 2, 162 06 Prague 6, Czech Republic
| | - Eva Heřmánková
- Institute of Macromolecular Chemistry, Czech Academy of Sciences, Heyrovského nám. 2, 162 06 Prague 6, Czech Republic.
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Robles-Bykbaev Y, Tarrío-Saavedra J, Quintana-Pita S, Díaz-Prado S, García Sabán FJ, Naya S. Statistical degradation modelling of Poly(D,L-lactide-co-glycolide) copolymers for bioscaffold applications. PLoS One 2018; 13:e0204004. [PMID: 30273349 PMCID: PMC6166939 DOI: 10.1371/journal.pone.0204004] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2017] [Accepted: 09/01/2018] [Indexed: 01/29/2023] Open
Abstract
This methodology permits to simulate the performance of different Poly(D,L-lactide-co-glycolide) copolymer formulations (PDLGA) in the human body, to identify the more influencing variables on hydrolytic degradation and, thus, to estimate biopolymer degradation level. The PDLGA characteristic degradation trends, caused by hydrolysis processes, have been studied to define their future biomedical applications as dental scaffolds. For this purpose, the mass loss, pH, glass transition temperature (Tg) and absorbed water mass of the different biopolymers have been obtained from samples into a phosphate-buffered saline solution (PBS) with initial pH of 7.4, at 37°C (human body conditions). The mass loss has been defined as the variable that characterize the biopolymer degradation level. Its dependence relationship with respect to time, pH and biopolymer formulation has been modelled using statistical learning tools. Namely, generalized additive models (GAM) and nonlinear mixed-effects regression with logistic and asymptotic functions have been applied. GAM model provides information about the relevant variables and the parametric functions that relate mass loss, pH and time. Mixed effects are introduced to model and estimate the degradation properties, and to compare the PDLGA biopolymer populations. The degradation path for each polymer formulation has been estimated and compared with respect to the others for helping to use the proper polymer for each specific medical application, performing selection criteria. It was found that the mass loss differences in PDLGA copolymers are strongly related with the way the pH decay versus time, due to carboxylic acid groups formation. This may occur in those environments in which the degradation products remain relatively confined with the non degraded mass. This is the case emulated with the present experimental procedure. The results show that PDLGA polymers degradation degree, in terms of half life and degradation rate, is increasing when acid termination is included, when DL-lactide molar ratio is reduced, decreasing the midpoint viscosity, or when glycolide is not included.
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Affiliation(s)
- Yaroslava Robles-Bykbaev
- Instituto de Investigación Biomédica de A Coruña (INIBIC), Complexo Hospitalario Universitario de A Coruña (CHUAC), SERGAS, Departamento de Medicina, Universidade da Coruña, A Coruña, Spain
- GI-IATa, Universidad Politécnica Salesiana, Cuenca, Ecuador
| | - Javier Tarrío-Saavedra
- Grupo MODES, Departamento de Matemáticas, Escola Politécnica Superior, Universidade da Coruña, Ferrol, Spain
- Centro de Investigación TIC (CITIC), Universidade da Coruña, A Coruña, Spain
| | | | - Silvia Díaz-Prado
- Instituto de Investigación Biomédica de A Coruña (INIBIC), Complexo Hospitalario Universitario de A Coruña (CHUAC), SERGAS, Departamento de Medicina, Universidade da Coruña, A Coruña, Spain
| | | | - Salvador Naya
- Grupo MODES, Departamento de Matemáticas, Escola Politécnica Superior, Universidade da Coruña, Ferrol, Spain
- Centro de Investigación TIC (CITIC), Universidade da Coruña, A Coruña, Spain
- ITMATI, Santiago de Compostela, Spain
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12
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Guo Z, Wu S, Li H, Li Q, Wu G, Zhou C. In vitro evaluation of electrospun PLGA/PLLA/PDLLA blend fibers loaded with naringin for guided bone regeneration. Dent Mater J 2017; 37:317-324. [PMID: 29279541 DOI: 10.4012/dmj.2016-220] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
The present study was to evaluate fiber mesh loaded with naringin via electrospinning to guide bone regeneration in vitro. The naringin-loaded fiber mesh was prepared via elctrospinning of PLGA, PLLA, PDLLA blending solution with naringin. SEM showed that naringin decreased the fiber's diameter according to the concentration of naringin. After 20 days' degradation in PBS, the drug-loaded fiber meshes still kept their stability with about 10% decrease in tensile strength. In vitro release experiments showed a sustained and steady naringin releasing profile with little initial burst releasing. Compared to the mats without naringin, the fiber mats loaded with naringin showed the most pronounced enhancement of cell growth when MC3T3-E1 cells were cultured on the fiber mats. The blend fiber loaded with naringin has optimized physical properties and sustained release profile in vitro. The study presents a promising fibrous mesh material for guided bone regeneration therapy.
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Affiliation(s)
- Zhenzhao Guo
- Department of Materials Science and Engineering, Jinan University.,The First Affiliated Hospital of Jinan University
| | - Shuai Wu
- Department of Materials Science and Engineering, Jinan University
| | - Hong Li
- Department of Materials Science and Engineering, Jinan University
| | - Qiyan Li
- Department of Endodontics, Periodontics and Oral Medicine, The First People's Hospital of Yunnan Province.,Department of Endodontics, Periodontics and Oral Medicine, Affiliated Hospital of Kunming University of Science and Technology
| | - Gang Wu
- Department of Biomedical Engineering, South China University of Technology
| | - Changren Zhou
- Department of Materials Science and Engineering, Jinan University
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Will OM, Purcz N, Chalaris A, Heneweer C, Boretius S, Purcz L, Nikkola L, Ashammakhi N, Kalthoff H, Glüer CC, Wiltfang J, Açil Y, Tiwari S. Increased survival rate by local release of diclofenac in a murine model of recurrent oral carcinoma. Int J Nanomedicine 2016; 11:5311-5321. [PMID: 27789944 PMCID: PMC5068477 DOI: 10.2147/ijn.s109199] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Despite aggressive treatment with radiation and combination chemotherapy following tumor resection, the 5-year survival rate for patients with head and neck cancer is at best only 50%. In this study, we examined the therapeutic potential of localized release of diclofenac from electrospun nanofibers generated from poly(D,L-lactide-co-glycolide) polymer. Diclofenac was chosen since anti-inflammatory agents that inhibit cyclooxygenase have shown great potential in their ability to directly inhibit tumor growth as well as suppress inflammation-mediated tumor growth. A mouse resection model of oral carcinoma was developed by establishing tumor growth in the oral cavity by ultrasound-guided injection of 1 million SCC-9 cells in the floor of the mouth. Following resection, mice were allocated into four groups with the following treatment: 1) no treatment, 2) implanted scaffolds without diclofenac, 3) implanted scaffolds loaded with diclofenac, and 4) diclofenac given orally. Small animal ultrasound and magnetic resonance imaging were utilized for longitudinal determination of tumor recurrence. At the end of 7 weeks following tumor resection, 33% of mice with diclofenac-loaded scaffolds had a recurrent tumor, in comparison to 90%–100% of the mice in the other three groups. At this time point, mice with diclofenac-releasing scaffolds showed 89% survival rate, while the other groups showed survival rates of 10%–25%. Immunohistochemical staining of recurrent tumors revealed a near 10-fold decrease in the proliferation marker Ki-67 in the tumors derived from mice with diclofenac-releasing scaffolds. In summary, the local application of diclofenac in an orthotopic mouse tumor resection model of oral cancer reduced tumor recurrence with significant improvement in survival over a 7-week study period following tumor resection. Local drug release of anti-inflammatory agents should be investigated as a therapeutic option in the prevention of tumor recurrence in oral squamous carcinoma.
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Affiliation(s)
- Olga Maria Will
- Section Biomedical Imaging, Clinic for Radiology and Neuroradiology, MOIN CC
| | - Nicolai Purcz
- Department of Oral and Maxillofacial Surgery, University Hospital Schleswig-Holstein
| | - Athena Chalaris
- Institute of Biochemistry, Christian-Albrechts-Universität zu Kiel
| | - Carola Heneweer
- Clinic for Radiology and Neuroradiology, University Hospital Schleswig-Holstein, Kiel; Institute for Diagnostic and Interventional Radiology, University Hospital Cologne, Cologne, Germany
| | - Susann Boretius
- Section Biomedical Imaging, Clinic for Radiology and Neuroradiology, MOIN CC
| | - Larissa Purcz
- Department of Oral and Maxillofacial Surgery, University Hospital Schleswig-Holstein
| | - Lila Nikkola
- Department of Biomedical Engineering, Tampere University of Technology, Tampere, Finland
| | - Nureddin Ashammakhi
- Department of Biomedical Engineering, Tampere University of Technology, Tampere, Finland
| | - Holger Kalthoff
- Institute for Experimental Cancer Research, University Hospital Schleswig-Holstein, Kiel, Germany
| | | | - Jörg Wiltfang
- Department of Oral and Maxillofacial Surgery, University Hospital Schleswig-Holstein
| | - Yahya Açil
- Department of Oral and Maxillofacial Surgery, University Hospital Schleswig-Holstein
| | - Sanjay Tiwari
- Section Biomedical Imaging, Clinic for Radiology and Neuroradiology, MOIN CC
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