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Kontogianni GI, Coelho C, Gauthier R, Fiorilli S, Quadros P, Vitale-Brovarone C, Chatzinikolaidou M. Osteogenic Potential of Nano-Hydroxyapatite and Strontium-Substituted Nano-Hydroxyapatite. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:1881. [PMID: 37368310 DOI: 10.3390/nano13121881] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/26/2023] [Revised: 06/12/2023] [Accepted: 06/15/2023] [Indexed: 06/28/2023]
Abstract
Nanohydroxyapatite (nanoHA) is the major mineral component of bone. It is highly biocompatible, osteoconductive, and forms strong bonds with native bone, making it an excellent material for bone regeneration. However, enhanced mechanical properties and biological activity for nanoHA can be achieved through enrichment with strontium ions. Here, nanoHA and nanoHA with a substitution degree of 50 and 100% of calcium with strontium ions (Sr-nanoHA_50 and Sr-nanoHA_100, respectively) were produced via wet chemical precipitation using calcium, strontium, and phosphorous salts as starting materials. The materials were evaluated for their cytotoxicity and osteogenic potential in direct contact with MC3T3-E1 pre-osteoblastic cells. All three nanoHA-based materials were cytocompatible, featured needle-shaped nanocrystals, and had enhanced osteogenic activity in vitro. The Sr-nanoHA_100 indicated a significant increase in the alkaline phosphatase activity at day 14 compared to the control. All three compositions revealed significantly higher calcium and collagen production up to 21 days in culture compared to the control. Gene expression analysis exhibited, for all three nanoHA compositions, a significant upregulation of osteonectin and osteocalcin on day 14 and of osteopontin on day 7 compared to the control. The highest osteocalcin levels were found for both Sr-substituted compounds on day 14. These results demonstrate the great osteoinductive potential of the produced compounds, which can be exploited to treat bone disease.
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Affiliation(s)
| | | | - Rémy Gauthier
- Department of Applied Science and Technology, Politecnico di Torino, 10129 Turin, Italy
- CNRS, INSA Lyon, Université Claude Bernard Lyon 1, UMR 5510, MATEIS, F-69621 Villeur-banne, France
| | - Sonia Fiorilli
- Department of Applied Science and Technology, Politecnico di Torino, 10129 Turin, Italy
| | | | | | - Maria Chatzinikolaidou
- Department of Materials Science and Technology, University of Crete, 70013 Heraklion, Greece
- Foundation for Research and Technology Hellas (FORTH), Institute for Electronic Structure and Laser (IESL), 70013 Heraklion, Greece
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2
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A 3D-printed PCL/PEI/DNA bioactive scaffold for chemotherapy drug capture in vivo. Int J Biol Macromol 2023; 236:123942. [PMID: 36889620 DOI: 10.1016/j.ijbiomac.2023.123942] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2022] [Revised: 02/19/2023] [Accepted: 03/02/2023] [Indexed: 03/08/2023]
Abstract
Systemic chemotherapy after surgery is necessary to control tumor recurrence, but the severe side effects caused by chemotherapeutic drugs pose a great threat to patients' health. In this study, we originally develop a porous scaffold used for chemotherapy drug capture by using 3D printing technology. The scaffold is mainly composed of poly (ε-caprolactone) (PCL) and polyetherimide (PEI) with a mass ratio of 5/1. Subsequently, the printed scaffold is modified with DNA through the strong electrostatic integration between DNA and PEI to endow the scaffold with the specific absorption to doxorubicin (DOX, a widely used chemotherapy drug). The results show that pore diameter has an important influence on DOX adsorption, and smaller pores will ensure a higher DOX absorption. In vitro, the printed scaffold can absorb about 45 % DOX. While in vivo, it remains a higher absorption ability to DOX when the scaffold is successfully implanted into the common jugular vein of rabbits. What's more, the scaffold has good hemocompatibility and biocompatibility, indicating its safety for in vivo application. Taken together, the 3D-printed scaffold with excellent capture of chemotherapy drugs will play an important role in reducing the toxic side effects of chemotherapy drugs and improving the life quality of patients.
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3
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Khan MUA, Razak SIA, Rehman S, Hasan A, Qureshi S, Stojanović GM. Bioactive scaffold (sodium alginate)-g-(nHAp@SiO 2@GO) for bone tissue engineering. Int J Biol Macromol 2022; 222:462-472. [PMID: 36155784 DOI: 10.1016/j.ijbiomac.2022.09.153] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2022] [Revised: 09/02/2022] [Accepted: 09/16/2022] [Indexed: 12/24/2022]
Abstract
Globally, people suffering from bone disorders are steadily increasing and bone tissue engineering is an advanced approach to treating fractured and defected bone tissues. In this study, we have prepared polymeric nanocomposite by free-radical polymerization from sodium alginate, hydroxyapatite, and silica with different GO amounts. The porous scaffolds were fabricated using the freeze drying technique. The structural, morphological, mechanical, and wetting investigation was conducted by Fourier-transform infrared spectroscopy, X-ray diffraction, scanning electron microscope, universal tensile machine, and water contact angle characterization techniques. The swelling, biodegradation, and water retention were also studied. The biological studies were performed (cell viability, cell adherence, proliferation, and mineralization) against osteoblast cell lines. Scaffolds have exhibited different pore morphology SAG-1 (pore size = 414.61 ± 56 μm and porosity = 81.45 ± 2.17 %) and SAG-4 (pore size = 195.97 ± 82 μm and porosity = 53.82 ± 2.45 %). They have different mechanical behavior as SAG-1 has the least compression strength and compression modulus 2.14 ± 2.35 and 16.51 ± 1.27 MPa. However, SAG-4 has maximum compression strength and compression modulus 13.67 ± 2.63 and 96.16 ± 1.97 MPa with wetting behavior 80.70° and 58.70°, respectively. Similarly, SAG-1 exhibited the least and SAG-4 presented maximum apatite mineral formation, cell adherence, cell viability, and cell proliferation against mouse pre-osteoblast cell lines. The increased GO amount provides different multifunctional materials with different characteristics. Hence, the fabricated scaffolds could be potential scaffold materials to treat and regenerate fracture bone tissues in bone tissue engineering.
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Affiliation(s)
- Muhammad Umar Aslam Khan
- Biomedical Research Center, Qatar University, Doha 2713, Qatar; Department of Mechanical and Industrial Engineering, Qatar University, Doha 2713, Qatar.
| | - Saiful Izwan Abd Razak
- BioInspired Device and Tissue Engineering Research Group, School of Biomedical Engineering and Health Sciences, Faculty of Engineering, Universiti Teknologi Malaysia, 81300 Skudai, Johor, Malaysia; Sports Innovation & Technology Centre, Institute of Human Centred Engineering, Universiti Teknologi Malaysia, 81300 Skudai, Johor, Malaysia
| | - Sarish Rehman
- Department of Chemistry, McGill University, Montreal H3A 0B8, Canada
| | - Anwarul Hasan
- Biomedical Research Center, Qatar University, Doha 2713, Qatar; Department of Mechanical and Industrial Engineering, Qatar University, Doha 2713, Qatar
| | - Saima Qureshi
- Faculty of Technical Sciences, University of Novi Sad, T. Dositeja Obradovića 6, 21000 Novi Sad, Serbia
| | - Goran M Stojanović
- Faculty of Technical Sciences, University of Novi Sad, T. Dositeja Obradovića 6, 21000 Novi Sad, Serbia
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A novel, bioactive and antibacterial scaffold based on functionalized graphene oxide with lignin, silk fibroin and ZnO nanoparticles. Sci Rep 2022; 12:8770. [PMID: 35610263 PMCID: PMC9130258 DOI: 10.1038/s41598-022-12283-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2021] [Accepted: 05/09/2022] [Indexed: 11/21/2022] Open
Abstract
In this study, a novel nanobiocomposite was synthesized using graphene oxide, lignin, silk fibroin and ZnO and used in biological fields. To synthesize this structure, after preparing graphene oxide by the Hummer method, lignin, silk fibroin, and ZnO nanoparticles (NPs) were added to it, respectively. Also, ZnO NPs with a particle size of about 18 nm to 33 nm was synthesized via Camellia sinensis extract by green methodology. The synthesized structure was examined as anti-biofilm agent and it was observed that the Graphene oxide-lignin/silk fibroin/ZnO nanobiocomposite has a significant ability to prevent the formation of P. aeruginosa biofilm. In addition, due to the importance of the possibility of using this structure in biological environments, its toxicity and blood compatibility were also evaluated. According to the obtained results from MTT assay, the viability percentages of Hu02 cells treated with Graphene oxide-lignin/silk fibroin/ZnO nanobiocomposite after 24, 48, and 72 h of incubation were 89.96%, 89.32%, and 91.28%. On the other hand, the hemolysis percentage of the synthesized structure after 24 h and 72 h of extraction was 9.5% and 11.76% respectively. As a result, the synthesized structure has a hemolysis percentage below 12% and its toxicity effect on Hu02 cells is below 9%.
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Agarwal A, Rao GK, Majumder S, Shandilya M, Rawat V, Purwar R, Verma M, Srivastava CM. Natural protein-based electrospun nanofibers for advanced healthcare applications: progress and challenges. 3 Biotech 2022; 12:92. [PMID: 35342680 PMCID: PMC8921418 DOI: 10.1007/s13205-022-03152-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2021] [Accepted: 02/16/2022] [Indexed: 02/07/2023] Open
Abstract
Electrospinning is an electrostatic fiber fabrication technique that operates by the application of a strong electric field on polymer solution or melts. It is used to fabricate fibers whose size lies in the range of few microns to the nanometer range. Historic development of electrospinning has evinced attention due to its outstanding attributes such as small diameter, excellent pore inter-connectivity, high porosity, and high surface-to-volume ratio. This review aims to highlight the theory behind electrospinning and the machine setup with a detailed discussion about the processing parameters. It discusses the latest innovations in natural protein-based electrospun nanofibers for health care applications. Various plant- and animal-based proteins have been discussed with detailed sample preparation and corresponding processing parameters. The usage of these electrospun nanofibers in regenerative medicine and drug delivery has also been discussed. Some technical innovations in electrospinning techniques such as emulsion electrospinning and coaxial electrospinning have been highlighted. Coaxial electrospun core-shell nanofibers have the potential to be utilized as an advanced nano-architecture for sustained release targeted delivery as well as for regenerative medicine. Healthcare applications of nanofibers formed via emulsion and coaxial electrospinning have been discussed briefly. Electrospun nanofibers have still much scope for commercialization on large scale. Some of the available wound-dressing materials have been discussed in brief.
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Affiliation(s)
- Anushka Agarwal
- Department of Chemistry, Biochemistry and Forensic Science, Amity School of Applied Sciences, Amity University Haryana, Gurugram, 122413 India
| | - Gyaneshwar K. Rao
- Department of Chemistry, Biochemistry and Forensic Science, Amity School of Applied Sciences, Amity University Haryana, Gurugram, 122413 India
| | - Sudip Majumder
- Department of Chemistry, Biochemistry and Forensic Science, Amity School of Applied Sciences, Amity University Haryana, Gurugram, 122413 India
| | - Manish Shandilya
- Department of Chemistry, Biochemistry and Forensic Science, Amity School of Applied Sciences, Amity University Haryana, Gurugram, 122413 India
| | - Varun Rawat
- Department of Chemistry, Biochemistry and Forensic Science, Amity School of Applied Sciences, Amity University Haryana, Gurugram, 122413 India
| | - Roli Purwar
- Department of Applied Chemistry, Delhi Technological University, New Delhi, Delhi 110042 India
| | - Monu Verma
- Department of Environmental Engineering, University of Seoul, Seoul, 130743 South Korea
| | - Chandra Mohan Srivastava
- Department of Chemistry, Biochemistry and Forensic Science, Amity School of Applied Sciences, Amity University Haryana, Gurugram, 122413 India
- Centre for Polymer Technology, Amity School of Applied Sciences, Amity University Haryana, Gurugram, 122413 India
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Aznar-Cervantes SD, Pagán A, Candel MJ, Pérez-Rigueiro J, Cenis JL. Silkworm Gut Fibres from Silk Glands of Samia cynthia ricini-Potential Use as a Scaffold in Tissue Engineering. Int J Mol Sci 2022; 23:ijms23073888. [PMID: 35409245 PMCID: PMC8998787 DOI: 10.3390/ijms23073888] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2022] [Revised: 03/23/2022] [Accepted: 03/29/2022] [Indexed: 12/13/2022] Open
Abstract
High-performance fibroin fibres are ideal candidates for the manufacture of scaffolds with applications in tissue engineering due to the excellent mechanical properties and optimal biocompatibility of this protein. In this work, the manufacture of high-strength fibres made from the silk glands of Samia cynthia ricini is explored. The glands were subjected to soaking in aqueous dissolutions of acetic acid and stretched to manufacture the fibres. The materials produced were widely characterized, in terms of morphology, mechanical properties, crystallinity and content of secondary structures, comparing them with those produced by the standard procedure published for Bombyx mori. In addition, mechanical properties and biocompatibility of a braided scaffold produced from these fibres was evaluated. The results obtained show that the fibres from B. mori present a higher degree of crystallinity than those from S. c. ricini, which is reflected in higher values of elastic modulus and lower values of strain at break. Moreover, a decrease in the elongation values of the fibres from S. c. ricini was observed as the concentration of acetic acid was increased during the manufacture. On the other hand, the study of the braided scaffolds showed higher values of tensile strength and strain at break in the case of S. c. ricini materials and similar values of elastic modulus, compared to those of B. mori, displaying both scaffolds optimal biocompatibility using a fibroblast cell line.
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Affiliation(s)
- Salvador D. Aznar-Cervantes
- Departamento de Biotecnología, Genómica y Mejora Vegetal, Instituto Murciano de Investigación y Desarrollo Agrario y Ambiental (IMIDA), La Alberca, 30150 Murcia, Spain; (S.D.A.-C.); (M.J.C.); (J.L.C.)
| | - Ana Pagán
- Departamento de Biotecnología, Genómica y Mejora Vegetal, Instituto Murciano de Investigación y Desarrollo Agrario y Ambiental (IMIDA), La Alberca, 30150 Murcia, Spain; (S.D.A.-C.); (M.J.C.); (J.L.C.)
- Correspondence: ; Tel.: +34-968366719
| | - María J. Candel
- Departamento de Biotecnología, Genómica y Mejora Vegetal, Instituto Murciano de Investigación y Desarrollo Agrario y Ambiental (IMIDA), La Alberca, 30150 Murcia, Spain; (S.D.A.-C.); (M.J.C.); (J.L.C.)
| | - José Pérez-Rigueiro
- Centro de Tecnología Biomédica, Universidad Politécnica de Madrid, Pozuelo de Alarcón, 28223 Madrid, Spain;
- Departamento de Ciencia de Materiales, ETSI Caminos, Canales y Puertos, Universidad Politécnica de Madrid, 28040 Madrid, Spain
- Biomedical Research Networking Center in Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), 28223 Madrid, Spain
| | - José L. Cenis
- Departamento de Biotecnología, Genómica y Mejora Vegetal, Instituto Murciano de Investigación y Desarrollo Agrario y Ambiental (IMIDA), La Alberca, 30150 Murcia, Spain; (S.D.A.-C.); (M.J.C.); (J.L.C.)
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7
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Rahman MM, Balu R, Abraham A, Dutta NK, Choudhury NR. Engineering a Bioactive Hybrid Coating for In Vitro Corrosion Control of Magnesium and Its Alloy. ACS APPLIED BIO MATERIALS 2021; 4:5542-5555. [PMID: 35006741 DOI: 10.1021/acsabm.1c00366] [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: 12/21/2022]
Abstract
Magnesium (Mg) and its alloys are promising biodegradable metallic implant materials. However, their clinical applications are limited by their fast corrosion rate in the biological environment. In this work, with an outlook to improve the in vitro corrosion resistance of Mg and WE43 Mg alloy, a layer-by-layer interfacially engineered anticorrosive and bioactive coating consisting of a natural oxide lower layer, hydroxyapatite (HA) middle layer, and silk fibroin (SF) top layer was fabricated and investigated. Anodization was used to create natural oxide layer induced microroughness on substrates. The electrochemically deposited HA layer improved the surface microroughness and microhardness but significantly decreased Mg ion release, hydrogen gas evolution, and weight loss in simulated body fluid. The spin-coated SF layer further decreased hydrophilicity, in vitro degradation, and corrosion rate. The nonspecific and specific intermolecular interactions between fabricated layers along with their mechanical interlocking interface contributed to improved adhesion strength and integrity of the coating. The SF+HA-coated samples showed enhanced degradation and corrosion resistance due to a synergistic effect of the underlying HA layer, hindering the ingress of aggressive ions and the top hydrophobic SF layer, preventing the ingress of corrosive solution. The SF+HA-coated Mg and WE43 Mg alloy samples exhibited 50 and 26 times decreased corrosion rate, respectively, compared to uncoated samples. Moreover, in vitro cytotoxicity and cell culture studies using a mouse fibroblast cell showed that the SF+HA hybrid coating improved the cell viability, attachment, and proliferation, with cells exhibiting elongated morphology on coated samples as compared to a round shape on uncoated samples.
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Affiliation(s)
- Md Mostafizur Rahman
- Chemical and Environmental Engineering, School of Engineering, RMIT University, Melbourne, VIC 3000, Australia
| | - Rajkamal Balu
- Chemical and Environmental Engineering, School of Engineering, RMIT University, Melbourne, VIC 3000, Australia
| | - Amanda Abraham
- ARC Centre of Excellence for Nanoscale BioPhotonics, School of Science, RMIT University, Melbourne, VIC 3000, Australia
| | - Naba K Dutta
- Chemical and Environmental Engineering, School of Engineering, RMIT University, Melbourne, VIC 3000, Australia
| | - Namita Roy Choudhury
- Chemical and Environmental Engineering, School of Engineering, RMIT University, Melbourne, VIC 3000, Australia
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Eivazzadeh-Keihan R, Radinekiyan F, Aliabadi HAM, Sukhtezari S, Tahmasebi B, Maleki A, Madanchi H. Chitosan hydrogel/silk fibroin/Mg(OH) 2 nanobiocomposite as a novel scaffold with antimicrobial activity and improved mechanical properties. Sci Rep 2021; 11:650. [PMID: 33436831 PMCID: PMC7804245 DOI: 10.1038/s41598-020-80133-3] [Citation(s) in RCA: 51] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2020] [Accepted: 12/17/2020] [Indexed: 01/29/2023] Open
Abstract
Herein, a novel nanobiocomposite scaffold based on modifying synthesized cross-linked terephthaloyl thiourea-chitosan hydrogel (CTT-CS hydrogel) substrate using the extracted silk fibroin (SF) biopolymer and prepared Mg(OH)2 nanoparticles was designed and synthesized. The biological capacity of this nanobiocomposite scaffold was evaluated by cell viability method, red blood cells hemolytic and anti-biofilm assays. According to the obtained results from 3 and 7 days, the cell viability of CTT-CS/SF/Mg(OH)2 nanobiocomposite scaffold was accompanied by a considerable increment from 62.5 to 89.6% respectively. Furthermore, its low hemolytic effect (4.5%), and as well, the high anti-biofilm activity and prevention of the P. aeruginosa biofilm formation confirmed its promising hemocompatibility and antibacterial activity. Apart from the cell viability, blood biocompatibility, and antibacterial activity of CTT-CS/SF/Mg(OH)2 nanobiocomposite scaffold, its structural features were characterized using spectral and analytical techniques (FT-IR, EDX, FE-SEM and TG). As well as, given the mechanical tests, it was indicated that the addition of SF and Mg(OH)2 nanoparticles to the CTT-CS hydrogel could improve its compressive strength from 65.42 to 649.56 kPa.
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Affiliation(s)
- Reza Eivazzadeh-Keihan
- Catalysts and Organic Synthesis Research Laboratory, Department of Chemistry, Iran University of Science and Technology, 16846-13114, Tehran, Iran
| | - Fateme Radinekiyan
- Catalysts and Organic Synthesis Research Laboratory, Department of Chemistry, Iran University of Science and Technology, 16846-13114, Tehran, Iran
| | - Hooman Aghamirza Moghim Aliabadi
- Faculty of Chemistry, K.N. Toosi University of Technology, Tehran, Iran
- Protein Chemistry Laboratory, Department of Medical Biotechnology, Biotechnology Research Center, Pasteur Institute of Iran, Tehran, Iran
| | - Sima Sukhtezari
- Catalysts and Organic Synthesis Research Laboratory, Department of Chemistry, Iran University of Science and Technology, 16846-13114, Tehran, Iran
| | - Behnam Tahmasebi
- School of Chemistry, College of Science, University of Tehran, Tehran, Iran
| | - Ali Maleki
- Catalysts and Organic Synthesis Research Laboratory, Department of Chemistry, Iran University of Science and Technology, 16846-13114, Tehran, Iran.
| | - Hamid Madanchi
- Department of Biotechnology, School of Medicine, Semnan University of Medical Sciences, Semnan, Iran.
- Drug Design and Bioinformatics Unit, Department of Medical Biotechnology, Biotechnology Research Center, Pasteur Institute of Iran, Tehran, Iran.
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9
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Eivazzadeh-Keihan R, Moghim Aliabadi HA, Radinekiyan F, Sobhani M, Farzane khalili, Maleki A, Madanchi H, Mahdavi M, Shalan AE. Investigation of the biological activity, mechanical properties and wound healing application of a novel scaffold based on lignin–agarose hydrogel and silk fibroin embedded zinc chromite nanoparticles. RSC Adv 2021; 11:17914-17923. [PMID: 35480185 PMCID: PMC9033182 DOI: 10.1039/d1ra01300a] [Citation(s) in RCA: 50] [Impact Index Per Article: 16.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2021] [Accepted: 05/03/2021] [Indexed: 01/12/2023] Open
Abstract
Given the important aspects of wound healing approaches, in this work, an innovative biocompatible nanobiocomposite scaffold was designed and prepared based on cross-linked lignin–agarose hydrogel, extracted silk fibroin solution, and zinc chromite (ZnCr2O4) nanoparticles.
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Affiliation(s)
- Reza Eivazzadeh-Keihan
- Catalysts and Organic Synthesis Research Laboratory
- Department of Chemistry
- Iran University of Science and Technology
- Tehran 16846-13114
- Iran
| | | | - Fateme Radinekiyan
- Catalysts and Organic Synthesis Research Laboratory
- Department of Chemistry
- Iran University of Science and Technology
- Tehran 16846-13114
- Iran
| | - Mohammad Sobhani
- Catalysts and Organic Synthesis Research Laboratory
- Department of Chemistry
- Iran University of Science and Technology
- Tehran 16846-13114
- Iran
| | - Farzane khalili
- Catalysts and Organic Synthesis Research Laboratory
- Department of Chemistry
- Iran University of Science and Technology
- Tehran 16846-13114
- Iran
| | - Ali Maleki
- Catalysts and Organic Synthesis Research Laboratory
- Department of Chemistry
- Iran University of Science and Technology
- Tehran 16846-13114
- Iran
| | - Hamid Madanchi
- Department of Biotechnology
- School of Medicine
- Semnan University of Medical Sciences
- Semnan
- Iran
| | - Mohammad Mahdavi
- Endocrinology and Metabolism Research Center
- Endocrinology and Metabolism Clinical Sciences Institute
- Tehran University of Medical Sciences
- Tehran
- Iran
| | - Ahmed Esmail Shalan
- BCMaterials
- Basque Center for Materials, Applications and Nanostructures
- Martina Casiano
- UPV/EHU Science Park
- Leioa 48940
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10
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Development of Arabinoxylan-Reinforced Apple Pectin/Graphene Oxide/Nano-Hydroxyapatite Based Nanocomposite Scaffolds with Controlled Release of Drug for Bone Tissue Engineering: In-Vitro Evaluation of Biocompatibility and Cytotoxicity against MC3T3-E1. COATINGS 2020. [DOI: 10.3390/coatings10111120] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Fabrication of reinforced scaffolds to repair and regenerate defected bone is still a major challenge. Bone tissue engineering is an advanced medical strategy to restore or regenerate damaged bone. The excellent biocompatibility and osteogenesis behavior of porous scaffolds play a critical role in bone regeneration. In current studies, we synthesized polymeric nanocomposite material through free-radical polymerization to fabricate porous nanocomposite scaffolds by freeze drying. Functional group, surface morphology, porosity, pore size, and mechanical strength were examined through Fourier Transform Infrared Spectroscopy (FTIR), Single-Electron Microscopy (SEM), Brunauer-Emmet-Teller (BET), and Universal Testing Machine (UTM), respectively. These nanocomposites exhibit enhanced compressive strength (from 4.1 to 16.90 MPa), Young’s modulus (from 13.27 to 29.65 MPa) with well appropriate porosity and pore size (from 63.72 ± 1.9 to 45.75 ± 6.7 µm), and a foam-like morphology. The increasing amount of graphene oxide (GO) regulates the porosity and mechanical behavior of the nanocomposite scaffolds. The loading and sustained release of silver-sulfadiazine was observed to be 90.6% after 260 min. The in-vitro analysis was performed using mouse pre-osteoblast (MC3T3-E1) cell lines. The developed nanocomposite scaffolds exhibited excellent biocompatibility. Based on the results, we propose these novel nanocomposites can serve as potential future biomaterials to repair defected bone with the load-bearing application, and in bone tissue engineering.
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11
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Narayanan V, Sumathi S, Narayanasamy ANR. Tricomponent composite containing copper–hydroxyapatite/chitosan/polyvinyl pyrrolidone for bone tissue engineering. J Biomed Mater Res A 2020; 108:1867-1880. [DOI: 10.1002/jbm.a.36950] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2019] [Revised: 03/03/2020] [Accepted: 03/09/2020] [Indexed: 12/17/2022]
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12
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Veiga A, Castro F, Rocha F, Oliveira AL. Protein-Based Hydroxyapatite Materials: Tuning Composition toward Biomedical Applications. ACS APPLIED BIO MATERIALS 2020; 3:3441-3455. [DOI: 10.1021/acsabm.0c00140] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Anabela Veiga
- LEPABE − Laboratory for Process Engineering, Environment, Biotechnology & Energy, Department of Chemical Engineering, Faculty of Engineering of Porto, University of Porto, Porto, Portugal
| | - Filipa Castro
- LEPABE − Laboratory for Process Engineering, Environment, Biotechnology & Energy, Department of Chemical Engineering, Faculty of Engineering of Porto, University of Porto, Porto, Portugal
| | - Fernando Rocha
- LEPABE − Laboratory for Process Engineering, Environment, Biotechnology & Energy, Department of Chemical Engineering, Faculty of Engineering of Porto, University of Porto, Porto, Portugal
| | - Ana L. Oliveira
- CBQF - Centro de Biotecnologia e Quı́mica Fina - Laboratório Associado, Escola Superior de Biotecnologia, Universidade Católica Portuguesa, Porto, Portugal
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13
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Coelho F, Cavicchioli M, Specian SS, Cilli EM, Lima Ribeiro SJ, Scarel-Caminaga RM, de Oliveira Capote TS. Silk fibroin/hydroxyapatite composite membranes: Production, characterization and toxicity evaluation. Toxicol In Vitro 2020; 62:104670. [DOI: 10.1016/j.tiv.2019.104670] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2019] [Revised: 09/13/2019] [Accepted: 09/25/2019] [Indexed: 10/25/2022]
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14
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Xue Y, Wang F, Torculas M, Lofland S, Hu X. Formic Acid Regenerated Mori, Tussah, Eri, Thai, and Muga Silk Materials: Mechanism of Self-Assembly. ACS Biomater Sci Eng 2019; 5:6361-6373. [PMID: 33417811 DOI: 10.1021/acsbiomaterials.9b00577] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Flexible and water-insoluble regenerated silk materials have caught considerable interest due to their mechanical properties and numerous potential applications in medical fields. In this study, regenerated Mori (China), Thai, Eri, Muga, and Tussah silk films were prepared by a formic acid-calcium chloride (FA) method, and their structures, morphologies, and other physical properties were comparatively studied through Fourier transform infrared spectroscopy (FTIR), wide-angle X-ray scattering (WAXS), scanning electron microscopy (SEM), differential scanning calorimetry (DSC), dynamic mechanical analysis (DMA), and thermogravimetric analysis (TGA). FTIR results demonstrated that the secondary structures of those five types of silk films are different from those of their respective natural silk fibers, whose structures are dominated by stacked rigid intermolecular β-sheet crystals. Instead, intramolecular β-sheet structures were found to dominate these silk films made by FA method, as confirmed by WAXS. We propose that silk I-like structures with intramolecular β-sheets lead to water insolubility and mechanical flexibility. This comparative study offers a new pathway to understanding the tunable properties of silk-based biomaterials.
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Affiliation(s)
| | - Fang Wang
- Center of Analysis and Testing, Nanjing Normal University, Nanjing 210023, China
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Wang L, Pathak JL, Liang D, Zhong N, Guan H, Wan M, Miao G, Li Z, Ge L. Fabrication and characterization of strontium-hydroxyapatite/silk fibroin biocomposite nanospheres for bone-tissue engineering applications. Int J Biol Macromol 2019; 142:366-375. [PMID: 31593715 DOI: 10.1016/j.ijbiomac.2019.09.107] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2019] [Revised: 09/11/2019] [Accepted: 09/13/2019] [Indexed: 12/18/2022]
Abstract
Osteoinductive bone filling biomaterials are in high demand for effective bone defect reconstruction. In this study, we aimed to design both organic and inorganic substances containing strontium-doped hydroxyapatite/silk fibroin (SrHA/SF) biocomposite nanospheres as an osteoinductive bone defect-filling biomaterial. SrHA/SF nanospheres were prepared with different concentration of Sr using ultrasonic coprecipitation method. The nanospheres were characterized using XRD, FTIR, SEM, TEM, ICP-AES and TGA. Solid and dense SrHA/SF nanospheres with 500-700 nm size and rough surfaces were synthesized successfully. Higher crystallinity and HA/SF phase were observed with the increase in Sr-concentration. The doping of different concentration of Sr did not affect the size and surface characteristics of the nanospheres. ICP-AES data showed that Sr/Ca ratio in SrHA/SF is very close to the nominal value. Nanospheres with higher concentration of Sr did not negatively affect the biocompatibility, but enhanced viability of mesenchymal stem cells (MSCs). Moreover, SrHA/SF nanospheres showed higher osteogenic differentiation potential compared to HA/SF nanospheres as indicated by the results from ALP staining, ALP activity, and Runx2, Alp, Col-1 and Opn gene expression assay in MSCs culture. Our findings suggest this novel design of biocompatible and osteoinductive SrHA/SF biocomposite nanospheres as a potential bone defect-filling biomaterial for bone regenerative applications.
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Affiliation(s)
- Liping Wang
- Key Laboratory of Oral Medicine, Guangzhou Institute of Oral Disease, Affiliated Stomatology Hospital of Guangzhou Medical University, Guangzhou 510140, China
| | - Janak L Pathak
- Key Laboratory of Oral Medicine, Guangzhou Institute of Oral Disease, Affiliated Stomatology Hospital of Guangzhou Medical University, Guangzhou 510140, China
| | - Dongliang Liang
- Key Laboratory of Oral Medicine, Guangzhou Institute of Oral Disease, Affiliated Stomatology Hospital of Guangzhou Medical University, Guangzhou 510140, China
| | - Ningying Zhong
- Key Laboratory of Oral Medicine, Guangzhou Institute of Oral Disease, Affiliated Stomatology Hospital of Guangzhou Medical University, Guangzhou 510140, China
| | - Hongbing Guan
- Key Laboratory of Oral Medicine, Guangzhou Institute of Oral Disease, Affiliated Stomatology Hospital of Guangzhou Medical University, Guangzhou 510140, China
| | - Mianjia Wan
- Key Laboratory of Oral Medicine, Guangzhou Institute of Oral Disease, Affiliated Stomatology Hospital of Guangzhou Medical University, Guangzhou 510140, China
| | - Guohou Miao
- Key Laboratory of Oral Medicine, Guangzhou Institute of Oral Disease, Affiliated Stomatology Hospital of Guangzhou Medical University, Guangzhou 510140, China
| | - Zhengmao Li
- Key Laboratory of Oral Medicine, Guangzhou Institute of Oral Disease, Affiliated Stomatology Hospital of Guangzhou Medical University, Guangzhou 510140, China
| | - Linhu Ge
- Key Laboratory of Oral Medicine, Guangzhou Institute of Oral Disease, Affiliated Stomatology Hospital of Guangzhou Medical University, Guangzhou 510140, China.
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Janani G, Kumar M, Chouhan D, Moses JC, Gangrade A, Bhattacharjee S, Mandal BB. Insight into Silk-Based Biomaterials: From Physicochemical Attributes to Recent Biomedical Applications. ACS APPLIED BIO MATERIALS 2019; 2:5460-5491. [DOI: 10.1021/acsabm.9b00576] [Citation(s) in RCA: 54] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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17
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Santschi M, Vernengo A, Eglin D, D'Este M, Wuertz-Kozak K. Decellularized matrix as a building block in bioprinting and electrospinning. CURRENT OPINION IN BIOMEDICAL ENGINEERING 2019. [DOI: 10.1016/j.cobme.2019.05.003] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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18
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Martin CA, Radhakrishnan S, Nagarajan S, Muthukoori S, Dueñas JMM, Gómez Ribelles JL, Lakshmi BS, E A K N, Gómez-Tejedor JA, Reddy MS, Sellathamby S, Rela M, Subbaraya NK. An innovative bioresorbable gelatin based 3D scaffold that maintains the stemness of adipose tissue derived stem cells and the plasticity of differentiated neurons. RSC Adv 2019; 9:14452-14464. [PMID: 35519343 PMCID: PMC9064131 DOI: 10.1039/c8ra09688k] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2018] [Accepted: 04/05/2019] [Indexed: 12/02/2022] Open
Abstract
Neural tissue engineering aims at producing a simulated environment using a matrix that is suitable to grow specialized neurons/glial cells pertaining to CNS/PNS which replace damaged or lost tissues. The primary goal of this study is to design a compatible scaffold that supports the development of neural-lineage cells which aids in neural regeneration. The fabricated, freeze-dried scaffolds consisted of biocompatible, natural and synthetic polymers: gelatin and polyvinyl pyrrolidone. Physiochemical characterization was carried out using Fourier Transform Infrared Spectroscopy (FT-IR) and Scanning Electron Microscopy (SEM) imaging. The 3D construct retains good swelling proficiency and holds the integrated structure that supports cell adhesion and proliferation. The composite of PVP-gelatin is blended in such a way that it matches the mechanical strength of the brain tissue. The cytocompatibility analysis shows that the scaffolds are compatible and permissible for the growth of both stem cells as well as differentiated neurons. A change in the ratios of the scaffold components resulted in varied sizes of pores giving diverse surface morphology, greatly influencing the properties of the neurons. However, there is no change in stem cell properties. Different types of neurons are characterized by the type of gene associated with the neurotransmitter secreted by them. The change in the neuron properties could be attributed to neuroplasticity. The plasticity of the neurons was analyzed using quantitative gene expression studies. It has been observed that the gelatin-rich construct supports the prolonged proliferation of stem cells and multiple neurons along with their plasticity.
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Affiliation(s)
- Catherine Ann Martin
- Crystal Growth Centre, Anna University Chennai India
- National Foundation for Liver Research, Global Hospitals & Health City Chennai India
| | - Subathra Radhakrishnan
- National Foundation for Liver Research, Global Hospitals & Health City Chennai India
- Department of Biomedicine, Bharathidasan University India
| | | | | | - J M Meseguer Dueñas
- Center for Biomaterials and Tissue Engineering (CBIT), Universitat Politècnica de València Camino de Vera s/n. 46022 Valencia Spain
- Biomedical Research Networking Center in Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN) Spain
| | - José Luis Gómez Ribelles
- Center for Biomaterials and Tissue Engineering (CBIT), Universitat Politècnica de València Camino de Vera s/n. 46022 Valencia Spain
- Biomedical Research Networking Center in Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN) Spain
| | | | | | - José Antonio Gómez-Tejedor
- Center for Biomaterials and Tissue Engineering (CBIT), Universitat Politècnica de València Camino de Vera s/n. 46022 Valencia Spain
- Biomedical Research Networking Center in Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN) Spain
| | - Mettu Srinivas Reddy
- National Foundation for Liver Research, Global Hospitals & Health City Chennai India
| | | | - Mohamed Rela
- National Foundation for Liver Research, Global Hospitals & Health City Chennai India
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Fabrication of hierarchically porous silk fibroin-bioactive glass composite scaffold via indirect 3D printing: Effect of particle size on physico-mechanical properties and in vitro cellular behavior. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2019; 103:109688. [PMID: 31349405 DOI: 10.1016/j.msec.2019.04.067] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/13/2018] [Revised: 03/16/2019] [Accepted: 04/21/2019] [Indexed: 02/07/2023]
Abstract
In order to regenerate bone defects, bioactive hierarchically scaffolds play a key role due to their multilevel porous structure, high surface area, enhanced nutrient transport and diffusion. In this study, novel hierarchically porous silk fibroin (SF) and silk fibroin-bioactive glass (SF-BG) composite were fabricated with controlled architecture and interconnected structure, by combining indirect three-dimensional (3D) inkjet printing and freeze-drying methods. Further, the effect of 45S5 Bioactive glass particles of different sizes (<100 nm and 6 μm) on mechanical strength and cell behavior was investigated. The results demonstrated that the hierarchical structure in this scaffold was composed of two levels of pores in the order of 500-600 μm and 10-50 μm. The prepared SF-BG composite scaffolds utilized by nano and micro particles possessed mechanical properties with a compressive strength of 0.94 and 1.2 MPa, respectively, in dry conditions. In a wet condition, the hierarchically porous scaffolds did not exhibit any fluctuation after compression load cell and were incredibly flexible, with excellent mechanical stability. The SF-BG composite scaffold with nanoparticles presented a significant 50% increase in attachment of human bone marrow stem cells in comparison with SF and SF-BG scaffold with microparticles. Moreover, SF-BG scaffolds promoted alkaline phosphatase activity as compared to SF scaffolds without BG particles on day 14. In brief, the 3D porous silk fibroin-based composites containing BG nanoparticles with excellent mechanical properties are promising scaffolds for bone tissue regeneration in high load-bearing applications.
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Shitole AA, Raut PW, Sharma N, Giram P, Khandwekar AP, Garnaik B. Electrospun polycaprolactone/hydroxyapatite/ZnO nanofibers as potential biomaterials for bone tissue regeneration. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2019; 30:51. [PMID: 31011810 DOI: 10.1007/s10856-019-6255-5] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/12/2018] [Accepted: 04/11/2019] [Indexed: 05/20/2023]
Abstract
Fabricating a bioartificial bone graft possessing structural, mechanical and biological properties mimicking the real bone matrix is a major challenge in bone tissue engineering. Moreover, the developed materials are prone to microbial invasion leading to biomaterial centered infections which might limit their clinical translation. In the present study, biomimetic nanofibrous scaffolds of Poly ɛ-caprolactone (PCL)/nano-hydroxyapatite (nHA) were electrospun with 1wt%, 5wt%, 10wt%, 15wt% and 30wt% of zinc oxide (ZnO) nanoparticles in order to understand the optimal concentration range of (ZnO) nanoparticles balancing both biocompatibility and osteoregeneration. The developed nanofibrous scaffolds were successfully characterized using scanning electron microscopy (SEM), transmission electron microscopy (TEM), energy dispersive X-ray analysis (EDAX), contact angle, fourier transform infrared spectroscopy (FTIR), wide-angle X-Ray diffraction (WAXD), brunaueremmett Teller (BET) surface area and tensile testing. Biocompatibility of the developed scaffolds at in vitro level was evaluated by culturing MG-63 cells and investigating the impact on cell viability, proliferation, protein adsorption, alkaline phosphatase (ALP) activity and biomineralization. The PCL/nHA scaffolds exhibited a 1.2-fold increase in cell viability and proliferation, while incorporation of ZnO nanoparticles to PCL/nHA imparted antimicrobial activity to the scaffolds with a progressive increase in the antimicrobial efficacy with increasing ZnO concentration. The results of cell viability were supported by ALP activity and mineralization assay, wherein, PCL/nHA/ZnO scaffolds showed higher ALP activity and better mineralization capacity as compared to pristine PCL. Although, the PCL/nHA/ZnO scaffolds with 10, 15 and 30wt% of ZnO particles exhibited superior antimicrobial efficacy against both gram-negative (E. coli) and gram-positive (S. aureus) bacteria, a significant decrease in the cell viability and mechanical properties was observed at higher concentrations of ZnO namely 15 and 30%. Amongst the various ZnO concentrations studied optimal cell viability, antimicrobial effect and mechanical strength were observed at 10wt.% ZnO concentration. Thus, the present study revealed that the biomimetic tri-component PCL/nHA/ZnO scaffolds with ZnO concentration range of ≤ 10% could be ideal for achieving optimal biocompatibility (cell proliferation, biomineralization, and antimicrobial capacity) and mechanical stability thus making it a promising biomaterial substrate for bone tissue regeneration.
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Affiliation(s)
- Ajinkya A Shitole
- Symbiosis School of Biological Sciences, Symbiosis International (Deemed University), Gram- Lavale; Taluka- Mulshi, Pune, 412115, India
| | - Piyush W Raut
- Symbiosis School of Biological Sciences, Symbiosis International (Deemed University), Gram- Lavale; Taluka- Mulshi, Pune, 412115, India
| | - Neeti Sharma
- Symbiosis School of Biological Sciences, Symbiosis International (Deemed University), Gram- Lavale; Taluka- Mulshi, Pune, 412115, India.
| | - Prabhanjan Giram
- Polymer Science and Engineering Division, CSIR-National Chemical Laboratory, Pune, 411008, India
| | - Anand P Khandwekar
- School of Engineering, Ajeenkya DY Patil University (ADYPU), Pune, 412105, India
| | - Baijayantimala Garnaik
- Polymer Science and Engineering Division, CSIR-National Chemical Laboratory, Pune, 411008, India
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Amirikia M, Ali Jorsaraei SG, Ali Shariatzadeh SM, Mehranjani MS. Differentiation of stem cells from the apical papilla into osteoblasts by the elastic modulus of porous silk fibroin scaffolds. Biologicals 2019; 57:1-8. [DOI: 10.1016/j.biologicals.2018.10.005] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2018] [Revised: 10/21/2018] [Accepted: 10/23/2018] [Indexed: 12/31/2022] Open
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Abstract
Silk derived from the silkworm is known for its excellent biological and mechanical properties. It has been used in various fields as a biomaterial, especially in bone tissue engineering scaffolding. Recently, silk protein-based biomaterial has been used as a barrier membrane scaffolding for guided bone regeneration (GBR). GBR promotes bone regeneration in bone defect areas using special barrier membranes. GBR membranes should have biocompatibility, biodegradability, cell occlusion, the mechanical properties of space-making, and easy clinical handling. Silk-based biomaterial has excellent biologic and mechanical properties that make it a good candidate to be used as GBR membranes. Recently, various forms of silk protein-based membranes have been introduced, demonstrating excellent bone regeneration ability, including osteogenic cell proliferation and osteogenic gene expression, and promoting new bone regeneration in vivo. In this article, we introduced the characteristics of silk protein as bone tissue engineering scaffolding and the recent application of such silk material as a GBR membrane. We also suggested future studies exploring additional uses of silk-based materials as GBR membranes.
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Ko E, Lee JS, Kim H, Yang SY, Yang D, Yang K, Lee J, Shin J, Yang HS, Ryu W, Cho SW. Electrospun Silk Fibroin Nanofibrous Scaffolds with Two-Stage Hydroxyapatite Functionalization for Enhancing the Osteogenic Differentiation of Human Adipose-Derived Mesenchymal Stem Cells. ACS APPLIED MATERIALS & INTERFACES 2018; 10:7614-7625. [PMID: 28475306 DOI: 10.1021/acsami.7b03328] [Citation(s) in RCA: 72] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The development of functional scaffolds with improved osteogenic potential is important for successful bone formation and mineralization in bone tissue engineering. In this study, we developed a functional electrospun silk fibroin (SF) nanofibrous scaffold functionalized with two-stage hydroxyapatite (HAp) particles, using mussel adhesive-inspired polydopamine (PDA) chemistry. HAp particles were first incorporated into SF scaffolds during the electrospinning process, and then immobilized onto the electrospun SF nanofibrous scaffolds containing HAp via PDA-mediated adhesive chemistry. We obtained two-stage HAp-functionalized SF nanofibrous scaffolds with improved mechanical properties and capable of providing a bone-specific physiological microenvironment. The developed scaffolds were tested for their ability to enhance the osteogenic differentiation of human adipose-derived mesenchymal stem cells (hADMSCs) in vitro and repair bone defect in vivo. To boost their ability for bone repair, we genetically modified hADMSCs with the transcriptional coactivator with PDZ-binding motif (TAZ) via polymer nanoparticle-mediated gene delivery. TAZ is a well-known transcriptional modulator that activates the osteogenic differentiation of mesenchymal stem cells (MSCs). Two-stage HAp-functionalized SF scaffolds significantly promoted the osteogenic differentiation of TAZ-transfected hADMSCs in vitro and enhanced mineralized bone formation in a critical-sized calvarial bone defect model. Our study shows the potential utility of SF scaffolds with nanofibrous structures and enriched inorganic components in bone tissue engineering.
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Affiliation(s)
| | | | | | | | | | | | | | | | - Hee Seok Yang
- Department of Nanobiomedical Science & BK21 PLUS NBM Global Research Center for Regenerative Medicine , Dankook University , Cheonan 31116 , Republic of Korea
| | | | - Seung-Woo Cho
- Center for Nanomedicine , Institute for Basic Science (IBS) , Seoul 03722 , Republic of Korea
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24
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Auto-fluorescence of a silk fibroin-based scaffold and its interference with fluorophores in labeled cells. EUROPEAN BIOPHYSICS JOURNAL: EBJ 2018; 47:573-581. [DOI: 10.1007/s00249-018-1279-1] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/14/2017] [Revised: 09/22/2017] [Accepted: 01/14/2018] [Indexed: 01/05/2023]
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25
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Silk fibroin/hydroxyapatite composites for bone tissue engineering. Biotechnol Adv 2018; 36:68-91. [DOI: 10.1016/j.biotechadv.2017.10.001] [Citation(s) in RCA: 239] [Impact Index Per Article: 39.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2017] [Revised: 09/12/2017] [Accepted: 10/04/2017] [Indexed: 12/22/2022]
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26
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Impact of pre-incubation time of silk fibroin scaffolds in culture medium on cell proliferation and attachment. Tissue Cell 2017; 49:657-663. [DOI: 10.1016/j.tice.2017.09.002] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2017] [Revised: 09/10/2017] [Accepted: 09/10/2017] [Indexed: 12/30/2022]
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27
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Biological Properties of Low-Toxic PLGA and PLGA/PHB Fibrous Nanocomposite Scaffolds for Osseous Tissue Regeneration. Evaluation of Potential Bioactivity. Molecules 2017; 22:molecules22111852. [PMID: 29143781 PMCID: PMC6150223 DOI: 10.3390/molecules22111852] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2017] [Revised: 10/19/2017] [Accepted: 10/24/2017] [Indexed: 11/18/2022] Open
Abstract
The aim of the study was to evaluate the biocompatibility and bioactivity of two new prototype implants for bone tissue regeneration made from biodegradable fibrous materials. The first is a newly developed poly(l-lactide-co-glycolide), (PLGA), and the second is a blend of PLGA with synthetic poly([R,S]-3-hydroxybutyrate) (PLGA/PHB). The implant prototypes comprise PLGA or PLGA/PHB nonwoven fabrics with designed pore structures to create the best conditions for cell proliferation. The bioactivity of the proposed implants was enhanced by introducing a hydroxyapatite material and a biologically active agent, namely, growth factor IGF1, encapsulated in calcium alginate microspheres. To assess the biocompatibility and bioactivity, allergenic tests and an assessment of the local reaction of bone tissue after implantation were performed. Comparative studies of local tissue response after implantation into trochanters for a period of 12 months were performed on New Zealand rabbits. Based on the results of the in vivo evaluation of the allergenic effects and the local tissue reaction 12 months after implantation, it was concluded that the two implant prototypes, PLGA + IGF1 and PLGA/PHB + IGF1, were characterized by high biocompatibility with the soft and bone tissues of the tested animals.
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Srivastava CM, Purwar R, Gupta A, Sharma D. Dextrose modified flexible tasar and muga fibroin films for wound healing applications. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2017; 75:104-114. [DOI: 10.1016/j.msec.2017.02.021] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/15/2016] [Revised: 11/29/2016] [Accepted: 02/06/2017] [Indexed: 12/19/2022]
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29
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Chetouani A, Follain N, Marais S, Rihouey C, Elkolli M, Bounekhel M, Benachour D, Le Cerf D. Physicochemical properties and biological activities of novel blend films using oxidized pectin/chitosan. Int J Biol Macromol 2017; 97:348-356. [DOI: 10.1016/j.ijbiomac.2017.01.018] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2016] [Revised: 12/12/2016] [Accepted: 01/03/2017] [Indexed: 12/13/2022]
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30
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GH D, Kong D, Gautrot J, Vootla SK. Fabrication and Characterization of Conductive Conjugated Polymer-Coated Antheraea mylitta
Silk Fibroin Fibers for Biomedical Applications. Macromol Biosci 2017; 17. [DOI: 10.1002/mabi.201600443] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2016] [Revised: 12/30/2016] [Indexed: 11/09/2022]
Affiliation(s)
- Darshan GH
- Department of Biotechnology and Microbiology; Karnatak University; Karnataka Dharwad 580 003 India
| | - Dexu Kong
- School of Engineering and Material Science; Queen Mary University of London; Mile End Road London E1 4NS UK
| | - Julien Gautrot
- School of Engineering and Material Science; Queen Mary University of London; Mile End Road London E1 4NS UK
| | - Shyam Kumar Vootla
- Department of Biotechnology and Microbiology; Karnatak University; Karnataka Dharwad 580 003 India
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31
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Singh BK, Dutta PK. Chitin, Chitosan, and Silk Fibroin Electrospun Nanofibrous Scaffolds: A Prospective Approach for Regenerative Medicine. SPRINGER SERIES ON POLYMER AND COMPOSITE MATERIALS 2016. [DOI: 10.1007/978-81-322-2511-9_7] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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32
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Sekar K, Balan KK, Sundaramoorthy S. Comparision of electro spun tassar silk fibroin-hydroxyapatite composite scaffold prepared by soaking and in-situ methods. ACTA ACUST UNITED AC 2016. [DOI: 10.1016/j.matpr.2016.05.001] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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33
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Kaur T, Thirugnanam A. Tailoring in vitro biological and mechanical properties of polyvinyl alcohol reinforced with threshold carbon nanotube concentration for improved cellular response. RSC Adv 2016. [DOI: 10.1039/c6ra08006e] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The development of living bone tissue constructs with structural, mechanical and functional similarities to natural bone are the major challenges in bone tissue engineering.
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Affiliation(s)
- Tejinder Kaur
- Department of Biotechnology and Medical Engineering
- National Institute of Technology
- Rourkela
- India
| | - Arunachalam Thirugnanam
- Department of Biotechnology and Medical Engineering
- National Institute of Technology
- Rourkela
- India
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34
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Khajavi R, Abbasipour M, Bahador A. Electrospun biodegradable nanofibers scaffolds for bone tissue engineering. J Appl Polym Sci 2015. [DOI: 10.1002/app.42883] [Citation(s) in RCA: 103] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Ramin Khajavi
- Nanotechnology Research Center, South Tehran Branch, Islamic Azad University; Tehran Iran
| | - Mina Abbasipour
- Department of Textile Engineering; Science and Research Branch, Islamic Azad University; Tehran Iran
| | - Abbas Bahador
- Department of Medical Microbiology, School of Medicine; Tehran University of Medical Sciences; Tehran Iran
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35
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Sujana A, Venugopal JR, Velmurugan B, Góra A, Salla M, Ramakrishna S. Hydroxyapatite-intertwined hybrid nanofibres for the mineralization of osteoblasts. J Tissue Eng Regen Med 2015; 11:1853-1864. [DOI: 10.1002/term.2083] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2015] [Revised: 07/03/2015] [Accepted: 07/08/2015] [Indexed: 01/12/2023]
Affiliation(s)
- Andra Sujana
- Centre for Nanofibres and Nanotechnology, Mechanical Engineering, Faculty of Engineering; National University of Singapore
| | - Jayarama Reddy Venugopal
- Centre for Nanofibres and Nanotechnology, Mechanical Engineering, Faculty of Engineering; National University of Singapore
| | - Bhaarathy Velmurugan
- Centre for Nanofibres and Nanotechnology, Mechanical Engineering, Faculty of Engineering; National University of Singapore
| | - Aleksander Góra
- Centre for Nanofibres and Nanotechnology, Mechanical Engineering, Faculty of Engineering; National University of Singapore
| | - Manohar Salla
- Institute for Molecular Bioscience, Queensland Bioscience Precinct; University of Queensland; Brisbane Australia
| | - Seeram Ramakrishna
- Centre for Nanofibres and Nanotechnology, Mechanical Engineering, Faculty of Engineering; National University of Singapore
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The Effects of TiO2 Nanodot Films with RGD Immobilization on Light-Induced Cell Sheet Technology. BIOMED RESEARCH INTERNATIONAL 2015; 2015:582359. [PMID: 26417596 PMCID: PMC4568331 DOI: 10.1155/2015/582359] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/08/2015] [Accepted: 07/06/2015] [Indexed: 11/23/2022]
Abstract
Cell sheet technology is a new strategy in tissue engineering which could be possible to implant into the body without a scaffold. In order to get an integrated cell sheet, a light-induced method via UV365 is used for cell sheet detachment from culture dishes. In this study, we investigated the possibility of cell detachment and growth efficiency on TiO2 nanodot films with RGD immobilization on light-induced cell sheet technology. Mouse calvaria-derived, preosteoblastic (MC3T3-E1) cells were cultured on TiO2 nanodot films with (TR) or without (TN) RGD immobilization. After cells were cultured with or without 5.5 mW/cm2 UV365 illumination, cell morphology, cell viability, osteogenesis related RNA and protein expression, and cell detachment ability were compared, respectively. Light-induced cell detachment was possible when cells were cultured on TR samples. Also, cells cultured on TR samples showed better cell viability, alongside higher protein and RNA expression than on TN samples. This study provides a new biomaterial for light-induced cell/cell sheet harvesting.
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Meiyazhagan G, Raju R, Winfred SB, Mannivanan B, Bhoopalan H, Shankar V, Sekar S, Venkatachalam DP, Pitani R, Nagendrababu V, Thaiman M, Devivanayagam K, Jayaraman J, Ragavachary R, Venkatraman G. Bioactivity Studies of β-Lactam Derived Polycyclic Fused Pyrroli-Dine/Pyrrolizidine Derivatives in Dentistry: In Vitro, In Vivo and In Silico Studies. PLoS One 2015; 10:e0131433. [PMID: 26185985 PMCID: PMC4505899 DOI: 10.1371/journal.pone.0131433] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2014] [Accepted: 06/02/2015] [Indexed: 11/22/2022] Open
Abstract
The antibacterial activity of β-lactam derived polycyclic fused pyrrolidine/pyrrolizidine derivatives synthesized by 1, 3-dipolar cycloaddition reaction was evaluated against microbes involved in dental infection. Fifteen compounds were screened; among them compound 3 showed efficient antibacterial activity in an ex vivo dentinal tubule model and in vivo mice infectious model. In silico docking studies showed greater affinity to penicillin binding protein. Cell damage was observed under Scanning Electron Microscopy (SEM) which was further proved by Confocal Laser Scanning Microscope (CLSM) and quantified using Flow Cytometry by PI up-take. Compound 3 treated E. faecalis showed ROS generation and loss of membrane integrity was quantified by flow cytometry. Compound 3 was also found to be active against resistant E. faecalis strains isolated from failed root canal treatment cases. Further, compound 3 was found to be hemocompatible, not cytotoxic to normal mammalian NIH 3T3 cells and non mutagenic. It was concluded that β-lactam compound 3 exhibited promising antibacterial activity against E. faecalis involved in root canal infections and the mechanism of action was deciphered. The results of this research can be further implicated in the development of potent antibacterial medicaments with applications in dentistry.
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Affiliation(s)
- Gowri Meiyazhagan
- Department of Human Genetics, Sri Ramachandra University, Porur, Chennai, Tamilnadu, India
| | - Rajesh Raju
- Department of Organic Chemistry, University of Madras, Guindy Campus, Chennai, Tamilnadu, India
| | - Sofi Beaula Winfred
- Department of Human Genetics, Sri Ramachandra University, Porur, Chennai, Tamilnadu, India
| | - Bhavani Mannivanan
- Department of Human Genetics, Sri Ramachandra University, Porur, Chennai, Tamilnadu, India
| | - Hemadev Bhoopalan
- Department of Human Genetics, Sri Ramachandra University, Porur, Chennai, Tamilnadu, India
| | - Venkatesh Shankar
- Department of Bioinformatics, Alagappa University, Karaikudi, Tamilnadu, India
| | - Sathiya Sekar
- Center for Toxicology and Developmental Research, Sri Ramachandra University, Porur, Chennai, Tamilnadu, India
| | | | - Ravishankar Pitani
- Department of Community Medicine, Sri Ramachandra University, Porur, Chennai Tamilnadu, India
| | - Venkateshbabu Nagendrababu
- Department of Conservative Dentistry and Endodontics, Sri Ramachandra University, Porur, Chennai, Tamilnadu, India
| | - Malini Thaiman
- Central Research Facility, Sri Ramachandra University, Porur, Chennai, Tamilnadu, India
| | - Kandaswamy Devivanayagam
- Department of Conservative Dentistry and Endodontics, Sri Ramachandra University, Porur, Chennai, Tamilnadu, India
| | | | - Raghunathan Ragavachary
- Department of Organic Chemistry, University of Madras, Guindy Campus, Chennai, Tamilnadu, India
- * E-mail: (RRag); (GV)
| | - Ganesh Venkatraman
- Department of Human Genetics, Sri Ramachandra University, Porur, Chennai, Tamilnadu, India
- * E-mail: (RRag); (GV)
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Influence of the protocol of fibroin extraction on the antibiotic activities of the constructed composites. Prog Biomater 2015; 4:77-88. [PMID: 26566466 PMCID: PMC4636532 DOI: 10.1007/s40204-015-0039-x] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2015] [Accepted: 06/12/2015] [Indexed: 11/30/2022] Open
Abstract
The effect of the solvents for silk fibroin (SF) extraction on its antimicrobial activity was studied. Extraction protocols were performed using LiBr (SFL) and Ajisawa’s reagent (CaCl2:ethanol:H2O) (SFC). The morphological and structural characteristics of the extracted SF and their composites were assessed. Corresponding bactericidal activities against Staphylococcus aureus (ATCC 25923), Escherichia coli (ATCC 25922) and Pseudomonas aeroginosa (ATCC 27853) were performed. The resulting solutions were either casted into films or individually incorporated into composites of silver nanoparticles (NS) embedded into chitosan fragments (Cs) through γ-irradiation. Films of SF, obtained by using the two solvents, as well as the final prepared composites of SF, NS and Cs were analyzed using XRD, FTIR, SEM, TEM and zeta potential at several pH values. The band gap values were calculated. The results proved that, although SFC consumed shorter gelation time, yet SFL exerted higher antibiotic activity against the tested microorganisms. Moreover, the final composites had the ability to significantly reduce the growth of these medically relevant bacteria and are, therefore, recommended as a novel natural antibacterial biomaterial for several biomedical applications.
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Panda N, Bissoyi A, Pramanik K, Biswas A. Development of novel electrospun nanofibrous scaffold from P. ricini and A. mylitta silk fibroin blend with improved surface and biological properties. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2015; 48:521-32. [DOI: 10.1016/j.msec.2014.12.010] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/25/2014] [Revised: 10/12/2014] [Accepted: 12/04/2014] [Indexed: 11/30/2022]
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Electrospinning of Bioinspired Polymer Scaffolds. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2015; 881:33-53. [DOI: 10.1007/978-3-319-22345-2_3] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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Panda NN, Biswas A, Pramanik K, Jonnalagadda S. Enhanced osteogenic potential of human mesenchymal stem cells on electrospun nanofibrous scaffolds prepared from eri-tasar silk fibroin. J Biomed Mater Res B Appl Biomater 2014; 103:971-82. [DOI: 10.1002/jbm.b.33272] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2014] [Revised: 07/09/2014] [Accepted: 08/06/2014] [Indexed: 12/15/2022]
Affiliation(s)
- Niladri nath Panda
- Department of Biotechnology and Medical Engineering; National Institute of Technology; Rourkela-769008 Odisha India
| | - Amit Biswas
- Department of Biotechnology and Medical Engineering; National Institute of Technology; Rourkela-769008 Odisha India
| | - Krishna Pramanik
- Department of Biotechnology and Medical Engineering; National Institute of Technology; Rourkela-769008 Odisha India
| | - Sriramakamal Jonnalagadda
- Department of Pharmaceutical Sciences; Philadelphia College of Pharmacy; USciences Philadelphia Pennsylvania 19104
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Mahmoodi M, Hashemi PM, Imani R. Characterization of a novel nanobiomaterial fabricated from HA, TiO 2 and Al 2O 3 powders: an in vitro study. Prog Biomater 2014; 3:25. [PMID: 29470734 PMCID: PMC5151102 DOI: 10.1007/s40204-014-0025-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2014] [Accepted: 06/02/2014] [Indexed: 02/05/2023] Open
Abstract
For the purposes of this study, hydroxyapatite (HA)–Al2O3–TiO2 nanobiomaterial with significant surface properties and biocompatibility capable of forming surface apatite was fabricated by cold-press and sintering method. Samples were examined for hardness and porosity. The results showed that in terms of hardness and porosity, sample A (50 wt% TiO2–30 wt% HA–20 wt% Al2O3) was superior to sample B (30 wt% TiO2–50 wt% HA–20 wt% Al2O3), and also the density of nanobiomaterial was close to natural bone density. Bioactivity of the samples in a simulated body fluid (SBF) was investigated. Then, after immersing the samples in SBF solution for a period of 7 days, sample B exhibited greater ability to form calcium phosphate compounds on the surface as compared to sample A. In addition, in vitro studies showed that MG-67 osteoblast-like cells attached and spread on the samples surface. The results showed that cells proliferated in greater numbers on the sample B as compared to the sample A. Finally, X-ray diffraction, scanning electron microscopy, and energy-dispersive X-ray analysis were performed to identify phases, study microstructure, and determine percentage of elements, respectively. The results revealed that considering their different properties, both nanobiomaterials can be used in medical applications.
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Affiliation(s)
- Mahboobeh Mahmoodi
- Department of Materials and Mechanic, Yazd Branch, Islamic Azad University, Yazd, Iran.
| | - Peyman Mahmoodi Hashemi
- Department of Biomedical Engineering, College of Engineering and Technical, Yazd Science and Research Branch, Islamic Azad University, Yazd, Iran
| | - Rana Imani
- Biomaterial Group, Faculty of Biomedical Engineering, Amirkabir University of Technology, Tehran, Iran
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Li TT, Ebert K, Vogel J, Groth T. Comparative studies on osteogenic potential of micro- and nanofibre scaffolds prepared by electrospinning of poly(ε-caprolactone). Prog Biomater 2013; 2:13. [PMID: 29470684 PMCID: PMC5151106 DOI: 10.1186/2194-0517-2-13] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2013] [Accepted: 11/03/2013] [Indexed: 12/16/2022] Open
Abstract
The biocompatibility and osteogenic potential of four fibrous scaffolds prepared by electrospinning of poly(ε-caprolactone) (PCL) was studied with MG-63 osteoblast cells. Two different kinds of scaffolds were obtained by adjustment of spinning conditions, which were characterized as nano- or microfibrous. In addition of one nanofibrous, scaffold was made more hydrophilic by blending PCL with Pluronics F 68. Scaffolds were characterized by scanning electron microscopy and water contact angle measurements. Morphology and growth of MG63 cells seeded on the different scaffolds were investigated by confocal laser scanning microscopy after vital staining with fluorescein diacetate and by colorimetric assays. It was found that scaffolds composed of microfibres stipulated better growth conditions for osteoblasts probably by providing a real three-dimensional culture substratum, while nanofibre scaffolds restricted cell growth predominantly to surface regions. Osteogenic activity of cells was determined by alkaline phosphatase (ALP) and o-cresolphthalein complexone assay. It was observed that osteogenic activity of cells cultured in microfibre scaffolds was significantly higher than in nanofibre scaffolds regarding ALP activity. Overall, one can conclude that nanofibre scaffold provides better conditions for initial attachment of cells but does not provide advantages in terms of scaffold colonization and support of osteogenic activity compared to scaffolds prepared from microfibres.
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Affiliation(s)
- Ting-Ting Li
- Department Pharmaceutics and Biopharmaceutics, Biomedical Materials Group, Martin Luther University Halle-Wittenberg, Institute of Pharmacy, Heinrich-Damerow-Strasse 4, Halle (Saale), 06120 Germany
| | - Katrin Ebert
- GKSS Research Centre Geesthacht GmbH, Institute of Polymer Research, Max-Planck-Str.1, Geesthacht, 21502 Germany
| | - Jürgen Vogel
- Department Pharmaceutics and Biopharmaceutics, Biomedical Materials Group, Martin Luther University Halle-Wittenberg, Institute of Pharmacy, Heinrich-Damerow-Strasse 4, Halle (Saale), 06120 Germany
| | - Thomas Groth
- Department Pharmaceutics and Biopharmaceutics, Biomedical Materials Group, Martin Luther University Halle-Wittenberg, Institute of Pharmacy, Heinrich-Damerow-Strasse 4, Halle (Saale), 06120 Germany
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