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Zhang X, Zhou W, Xi W. Advancements in incorporating metal ions onto the surface of biomedical titanium and its alloys via micro-arc oxidation: a research review. Front Chem 2024; 12:1353950. [PMID: 38456182 PMCID: PMC10917964 DOI: 10.3389/fchem.2024.1353950] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2023] [Accepted: 01/31/2024] [Indexed: 03/09/2024] Open
Abstract
The incorporation of biologically active metallic elements into nano/micron-scale coatings through micro-arc oxidation (MAO) shows significant potential in enhancing the biological characteristics and functionality of titanium-based materials. By introducing diverse metal ions onto titanium implant surfaces, not only can their antibacterial, anti-inflammatory and corrosion resistance properties be heightened, but it also promotes vascular growth and facilitates the formation of new bone tissue. This review provides a thorough examination of recent advancements in this field, covering the characteristics of commonly used metal ions and their associated preparation parameters. It also highlights the diverse applications of specific metal ions in enhancing osteogenesis, angiogenesis, antibacterial efficacy, anti-inflammatory and corrosion resistance properties of titanium implants. Furthermore, the review discusses challenges faced and future prospects in this promising area of research. In conclusion, the synergistic approach of micro-arc oxidation and metal ion doping demonstrates substantial promise in advancing the effectiveness of biomedical titanium and its alloys, promising improved outcomes in medical implant applications.
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Affiliation(s)
- Xue’e Zhang
- Jiangxi Province Key Laboratory of Oral Biomedicine, School of Stomatology, Jiangxi Medical College, Jiangxi Province Clinical Research Center for Oral Diseases, Nanchang University, Nanchang, China
| | - Wuchao Zhou
- Jiangxi Province Key Laboratory of Oral Biomedicine, The Affiliated Stomatological Hospital, Jiangxi Medical College, Jiangxi Province Clinical Research Center for Oral Diseases, Nanchang University, Nanchang, China
| | - Weihong Xi
- Jiangxi Province Key Laboratory of Oral Biomedicine, The Affiliated Stomatological Hospital, Jiangxi Medical College, Jiangxi Province Clinical Research Center for Oral Diseases, Nanchang University, Nanchang, China
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2
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Avila Salazar DA, Fedin M, Hartramph W, Brauer DS. The structural role and coordination environment of cobalt in 45P 2O 5-CaO-Na 2O phosphate glasses: thermal properties and Raman, UV-vis-NIR, and EPR spectroscopy. Dalton Trans 2023; 52:4526-4536. [PMID: 36920418 DOI: 10.1039/d3dt00279a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/03/2023]
Abstract
Cobalt-containing materials are of interest for a wide range of applications, from biomaterials to solid-state lasers in optics. For instance, Co2+ is known to trigger the formation of new blood vessels, i.e. angiogenesis. Here, the use of phosphate glasses as a vehicle for local release of Co2+ ions is an attractive strategy to overcome the vascularisation limitation in tissue engineering. This study aimed to establish structure-property correlations as a function of the coordination environment of cobalt in 45P2O5-(30 - x)CaO-25Na2O-xCoO (x: 0.01 to 10 mol%) glasses. Constant polymerization and O/P ratio, resulting ultimately in constant basicity, were shown by ICP-OES and Raman spectroscopy. The latter, combined with EPR analysis, indicated that Co2+ was the predominant oxidation state and the presence of Co3+ can be excluded. UV-vis-NIR absorption spectra showed that the ratio between Co2+ in four- and six-fold coordination remained constant throughout the glass series. Their thermal properties measured by DSC and heating microscopy did not change much in the substitution range studied here. The steady trend in Tg values suggests a compensation between two opposite effects caused by the presence of four and six-fold coordinated Co2+, both being present at a constant ratio throughout the glasses. Accordingly, the higher field strength of Co2+ compared to that of Ca2+ is expected to strengthen the glass network. In contrast, four-fold coordinated cobalt is expected to weaken the network by connecting fewer fragments of the phosphate glass network than six-fold coordinated cobalt. These results indicate that the structural properties of the glasses with constant basicity are influenced by the coordination number of Co2+.
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Affiliation(s)
- Dahiana A Avila Salazar
- Otto Schott Institute of Materials Research, Friedrich Schiller University Jena, Fraunhoferstr. 6, 07743 Jena, Germany.
| | - Matvey Fedin
- International Tomography Center SB RAS and Novosibirsk State University, 630090 Novosibirsk, Russia
| | - Wolfram Hartramph
- Otto Schott Institute of Materials Research, Friedrich Schiller University Jena, Fraunhoferstr. 6, 07743 Jena, Germany.
| | - Delia S Brauer
- Otto Schott Institute of Materials Research, Friedrich Schiller University Jena, Fraunhoferstr. 6, 07743 Jena, Germany.
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3
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Biological Evaluation of Zinc Phosphate Cement for Potential Bone Contact Applications. Biomedicines 2023; 11:biomedicines11020250. [PMID: 36830786 PMCID: PMC9953316 DOI: 10.3390/biomedicines11020250] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2022] [Revised: 01/15/2023] [Accepted: 01/17/2023] [Indexed: 01/20/2023] Open
Abstract
Zinc phosphate cement is used in dentistry to lute crowns and bridges. So far, its biocompatibility for other applications has not been studied. This paper reports the biocompatibility of zinc phosphate towards MG63 cells, testing both the material (discs; 3 mm diameter × 1 mm thick) and leachate from the cement. Cell viability was determined using an MTT assay, and cytotoxicity from the effects of leachate, studied in triplicate. Microscopy (optical and scanning electron) determined the morphology and proliferation of cells attached to zinc phosphate. ICP-OES measured element release into leachate, and anti-microbial behaviour was determined against Streptococcus pyrogenes cultured on a Brain Heart Infusion agar using cement discs (3 mm diameter × 1 mm thick). Zones of inhibition were measured after 72 h. MG63 cells proliferated on zinc phosphate surfaces and retained their morphology. The cells were healthy and viable as shown by an MTT assay, both on cement and in leachate. High levels of phosphorus but low levels of zinc were released into leachate. The cement showed minimal antimicrobial activity against S. pyogenes, probably due to the long maturation times used. Zinc phosphate cement was found to be biocompatible towards MG63 cells, which indicates that it may be capable of use in bone contact applications.
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Otto JL, Fedotov I, Penyaz M, Schaum T, Kalenborn A, Kalin B, Sevryukov O, Walther F. Microstructure and Defect-Based Fatigue Mechanism Evaluation of Brazed Coaxial Ti/Al 2O 3 Joints for Enhanced Endoprosthesis Design. MATERIALS 2021; 14:ma14247895. [PMID: 34947498 PMCID: PMC8707568 DOI: 10.3390/ma14247895] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/05/2021] [Revised: 12/08/2021] [Accepted: 12/13/2021] [Indexed: 11/28/2022]
Abstract
Alumina-based ceramic hip endoprosthesis heads have excellent tribological properties, such as low wear rates. However, stress peaks can occur at the point of contact with the prosthesis stem, increasing the probability of fracture. This risk should be minimized, especially for younger and active patients. Metal elevations at the stem taper after revision surgery without removal of a well-fixed stem are also known to increase the risk of fracture. A solution that also eliminates the need for an adapter sleeve could be a fixed titanium insert in the ceramic ball head, which would be suitable as a damping element to reduce the occurrence of stress peaks. A viable method for producing such a permanent titanium–ceramic joint is brazing. Therefore, a brazing method was developed for coaxial samples, and two modifications were made to the ceramic surface to braze a joint that could withstand high cyclic loading. This cyclic loading was applied in multiple amplitude tests in a self-developed test setup, followed by fractographic studies. Computed tomography and microstructural analyses—such as energy dispersive X-ray spectroscopy—were also used to characterize the process–structure–property relationships. It was found that the cyclic loading capacity can be significantly increased by modification of the surface structure of the ceramic.
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Affiliation(s)
- Johannes L. Otto
- Chair of Materials Test Engineering (WPT), TU Dortmund University, 44227 Dortmund, Germany; (T.S.); (A.K.); (F.W.)
- Correspondence:
| | - Ivan Fedotov
- Department of Materials Science, National Research Nuclear University MEPhI (Moscow Engineering Physics Institute), 115409 Moscow, Russia; (I.F.); (M.P.); (O.S.)
| | - Milena Penyaz
- Department of Materials Science, National Research Nuclear University MEPhI (Moscow Engineering Physics Institute), 115409 Moscow, Russia; (I.F.); (M.P.); (O.S.)
| | - Thorge Schaum
- Chair of Materials Test Engineering (WPT), TU Dortmund University, 44227 Dortmund, Germany; (T.S.); (A.K.); (F.W.)
| | - Anke Kalenborn
- Chair of Materials Test Engineering (WPT), TU Dortmund University, 44227 Dortmund, Germany; (T.S.); (A.K.); (F.W.)
| | - Boris Kalin
- Department of Materials Science, National Research Nuclear University MEPhI (Moscow Engineering Physics Institute), 115409 Moscow, Russia; (I.F.); (M.P.); (O.S.)
| | - Oleg Sevryukov
- Department of Materials Science, National Research Nuclear University MEPhI (Moscow Engineering Physics Institute), 115409 Moscow, Russia; (I.F.); (M.P.); (O.S.)
| | - Frank Walther
- Chair of Materials Test Engineering (WPT), TU Dortmund University, 44227 Dortmund, Germany; (T.S.); (A.K.); (F.W.)
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5
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Majumdar S, Gupta S, Krishnamurthy S. Multifarious applications of bioactive glasses in soft tissue engineering. Biomater Sci 2021; 9:8111-8147. [PMID: 34766608 DOI: 10.1039/d1bm01104a] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Tissue engineering (TE), a new paradigm in regenerative medicine, repairs and restores the diseased or damaged tissues and eliminates drawbacks associated with autografts and allografts. In this context, many biomaterials have been developed for regenerating tissues and are considered revolutionary in TE due to their flexibility, biocompatibility, and biodegradability. One such well-documented biomaterial is bioactive glasses (BGs), known for their osteoconductive and osteogenic potential and their abundant orthopedic and dental clinical applications. However, in the last few decades, the soft tissue regenerative potential of BGs has demonstrated great promise. Therefore, this review comprehensively covers the biological application of BGs in the repair and regeneration of tissues outside the skeleton system. BGs promote neovascularization, which is crucial to encourage host tissue integration with the implanted construct, making them suitable biomaterial scaffolds for TE. Moreover, they heal acute and chronic wounds and also have been reported to restore the injured superficial intestinal mucosa, aiding in gastroduodenal regeneration. In addition, BGs promote regeneration of the tissues with minimal renewal capacity like the heart and lungs. Besides, the peripheral nerve and musculoskeletal reparative properties of BGs are also reported. These results show promising soft tissue regenerative potential of BGs under preclinical settings without posing significant adverse effects. Albeit, there is limited bench-to-bedside clinical translation of elucidative research on BGs as they require rigorous pharmacological evaluations using standardized animal models for assessing biomolecular downstream pathways.
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Affiliation(s)
- Shreyasi Majumdar
- Neurotherapeutics Laboratory, Department of Pharmaceutical Engineering and Technology, Indian Institute of Technology (Banaras Hindu University), Varanasi-221005, India.
| | - Smriti Gupta
- Neurotherapeutics Laboratory, Department of Pharmaceutical Engineering and Technology, Indian Institute of Technology (Banaras Hindu University), Varanasi-221005, India.
| | - Sairam Krishnamurthy
- Neurotherapeutics Laboratory, Department of Pharmaceutical Engineering and Technology, Indian Institute of Technology (Banaras Hindu University), Varanasi-221005, India.
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6
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Gupta S, Majumdar S, Krishnamurthy S. Bioactive glass: A multifunctional delivery system. J Control Release 2021; 335:481-497. [PMID: 34087250 DOI: 10.1016/j.jconrel.2021.05.043] [Citation(s) in RCA: 34] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2020] [Revised: 05/28/2021] [Accepted: 05/29/2021] [Indexed: 12/18/2022]
Abstract
Bioactive glasses (BAGs) were invented five decades ago and have been widely used clinically in orthopedic and stomatology. However, in the past two decades, BAGs have been explored immensely by several researchers worldwide as a multifunctional delivery system for a multitude of therapeutics ranging from metal ions to small molecules (e.g., drugs) and macromolecules (e.g., DNA). The impetus for devising a BAG-based delivery system in the 21st century is based upon the facilitative properties it offers for entrapment of a wide range of therapeutic molecules and the tailorable controlled release kinetics to the target tissue site along with the biological activity of the ionic dissolution products in several pathological conditions such as osteoporosis, cancer, infection, and inflammation. This review comprises two parts: the first part discusses the need for a new delivery system and how the journey from melt quench progressed towards template-based sol-gel mesoporous. In the second part, we have comprehended the scientific advancements made so far, emphasizing BAGs as a delivery system ranging from therapeutic ions to phytopharmaceuticals. We have also highlighted a few loopholes that have prevented bench-to-bedside clinical translation of a plethora of elucidative researches done so far.
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Affiliation(s)
- Smriti Gupta
- Neurotherapeutics Laboratory, Department of Pharmaceutical Engineering and Technology, Indian Institute of Technology (Banaras Hindu University), Varanasi 221005, India
| | - Shreyasi Majumdar
- Neurotherapeutics Laboratory, Department of Pharmaceutical Engineering and Technology, Indian Institute of Technology (Banaras Hindu University), Varanasi 221005, India
| | - Sairam Krishnamurthy
- Neurotherapeutics Laboratory, Department of Pharmaceutical Engineering and Technology, Indian Institute of Technology (Banaras Hindu University), Varanasi 221005, India.
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7
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Peticone C, Thompson DDS, Dimov N, Jevans B, Glass N, Micheletti M, Knowles JC, Kim HW, Cooper-White JJ, Wall IB. Characterisation of osteogenic and vascular responses of hMSCs to Ti-Co doped phosphate glass microspheres using a microfluidic perfusion platform. J Tissue Eng 2020; 11:2041731420954712. [PMID: 33178409 PMCID: PMC7592314 DOI: 10.1177/2041731420954712] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2020] [Accepted: 08/13/2020] [Indexed: 01/22/2023] Open
Abstract
Using microspherical scaffolds as building blocks to repair bone defects of
specific size and shape has been proposed as a tissue engineering strategy.
Here, phosphate glass (PG) microcarriers doped with 5 mol % TiO2 and
either 0 mol % CoO (CoO 0%) or 2 mol % CoO (CoO 2%) were investigated for their
ability to support osteogenic and vascular responses of human mesenchymal stem
cells (hMSCs). Together with standard culture techniques, cell-material
interactions were studied using a novel perfusion microfluidic bioreactor that
enabled cell culture on microspheres, along with automated processing and
screening of culture variables. While titanium doping was found to support hMSCs
expansion and differentiation, as well as endothelial cell-derived vessel
formation, additional doping with cobalt did not improve the functionality of
the microspheres. Furthermore, the microfluidic bioreactor enabled screening of
culture parameters for cell culture on microspheres that could be potentially
translated to a scaled-up system for tissue-engineered bone manufacturing.
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Affiliation(s)
- Carlotta Peticone
- Department of Biochemical Engineering, University College London, London, UK
| | | | - Nikolay Dimov
- Centre for Engineering Research, University of Hertfordshire, Hatfield, Hertfordshire, UK
| | - Ben Jevans
- Great Ormond Street Institute of Child Health, University College London, London, UK
| | - Nick Glass
- Australian Institute for Bioengineering and Nanotechnology, University of Queensland, St. Lucia, Brisbane, Australia
| | - Martina Micheletti
- Department of Biochemical Engineering, University College London, London, UK
| | - Jonathan C Knowles
- Division of Biomaterials and Tissue Engineering, University College London Eastman Dental Institute, London, UK.,The Discoveries Centre for Regenerative and Precision Medicine, UCL Campus, London, UK.,Department of Nanobiomedical Science & BK21 PLUS NBM Global Research Center for Regenerative Medicine, Dankook University, Cheonan, Republic of Korea.,UCL Eastman-Korea Dental Medicine Innovation Centre, Dankook University, Cheonan, Republic of Korea.,Institute for Tissue Regeneration Engineering, Dankook University, Cheonan, Republic of Korea
| | - Hae-Won Kim
- Department of Nanobiomedical Science & BK21 PLUS NBM Global Research Center for Regenerative Medicine, Dankook University, Cheonan, Republic of Korea.,UCL Eastman-Korea Dental Medicine Innovation Centre, Dankook University, Cheonan, Republic of Korea.,Institute for Tissue Regeneration Engineering, Dankook University, Cheonan, Republic of Korea
| | - Justin J Cooper-White
- Australian Institute for Bioengineering and Nanotechnology, University of Queensland, St. Lucia, Brisbane, Australia.,School of Chemical Engineering, University of Queensland, St. Lucia, Brisbane, Australia
| | - Ivan B Wall
- Department of Biochemical Engineering, University College London, London, UK.,Institute for Tissue Regeneration Engineering, Dankook University, Cheonan, Republic of Korea.,Aston Medical Research Institute and School of Life and Health Sciences, Aston University, Birmingham, UK
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8
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Kargozar S, Baino F, Hamzehlou S, Hamblin MR, Mozafari M. Nanotechnology for angiogenesis: opportunities and challenges. Chem Soc Rev 2020; 49:5008-5057. [PMID: 32538379 PMCID: PMC7418030 DOI: 10.1039/c8cs01021h] [Citation(s) in RCA: 102] [Impact Index Per Article: 25.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Angiogenesis plays a critical role within the human body, from the early stages of life (i.e., embryonic development) to life-threatening diseases (e.g., cancer, heart attack, stroke, wound healing). Many pharmaceutical companies have expended huge efforts on both stimulation and inhibition of angiogenesis. During the last decade, the nanotechnology revolution has made a great impact in medicine, and regulatory approvals are starting to be achieved for nanomedicines to treat a wide range of diseases. Angiogenesis therapies involve the inhibition of angiogenesis in oncology and ophthalmology, and stimulation of angiogenesis in wound healing and tissue engineering. This review aims to summarize nanotechnology-based strategies that have been explored in the broad area of angiogenesis. Lipid-based, carbon-based and polymeric nanoparticles, and a wide range of inorganic and metallic nanoparticles are covered in detail. Theranostic and imaging approaches can be facilitated by nanoparticles. Many preparations have been reported to have a bimodal effect where they stimulate angiogenesis at low dose and inhibit it at higher doses.
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Affiliation(s)
- Saeid Kargozar
- Tissue Engineering Research Group (TERG), Department of Anatomy and Cell Biology, School of Medicine, Mashhad University of Medical Sciences, 917794-8564 Mashhad, Iran
| | - Francesco Baino
- Institute of Materials Physics and Engineering, Applied Science and Technology Department, Politecnico di Torino, Corso Duca degli Abruzzi 24, 101 29 Torino, Italy
| | - Sepideh Hamzehlou
- Hematology/Oncology and Stem Cell Transplantation Research Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Michael R. Hamblin
- Wellman Center for Photomedicine, Massachusetts General Hospital, Boston, MA 02114, USA
- Department of Dermatology, Harvard Medical School, Boston, MA 02115, USA
- Laser Research Centre, Faculty of Health Science, University of Johannesburg, Doornfontein 2028, South Africa
| | - Masoud Mozafari
- Lunenfeld-Tanenbaum Research Institute, Mount Sinai Hospital, University of Toronto, Toronto, ON, Canada
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Luong D, Yergeshov AA, Zoughaib M, Sadykova FR, Gareev BI, Savina IN, Abdullin TI. Transition metal-doped cryogels as bioactive materials for wound healing applications. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2019; 103:109759. [PMID: 31349449 DOI: 10.1016/j.msec.2019.109759] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/02/2019] [Revised: 04/22/2019] [Accepted: 05/14/2019] [Indexed: 12/11/2022]
Abstract
Transition metals (TM) are essential microelements with various biological functions demanded in tissue regeneration applications. Little is known about therapeutic potential of TM within soft hydrogel biomaterials. The soluble divalent TM, such as Zn, Cu, Mn and Co, were stably incorporated into gelatin network during cryogelation. TM content in the resultant cryogels varied from 0.1 × 103 to 11.8 × 103 ppm, depending on the TM type and concentration in the reaction solution. Zn component was uniformly complexed with the gelatin scaffold according to elemental imaging, increasing the swelling of polymer walls and the G'/G″ values and also decreasing the size of cryogel macro-pores. Zn-doped cryogels supported migration of human skin fibroblasts (HSF); only upper Zn content of 11.8 × 103 ppm in the scaffold caused c.a. 50% inhibition of cell growth. Zn ions solubilized in culture medium were more active towards HSF (IC50 ≈ 0.3 mM). Treatment of splinted full-skin excisional wounds in rats with the Zn-doped and non-doped cryogels showed that Zn considerably promoted passing inflammatory/proliferation phases of healing process, inducing more intense dermis formation and structuration. The results show the feasibility of development of cryogel based formulations with different TM and support high phase-specific ability of the Zn-gelatin cryogels to repair acute wounds.
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Affiliation(s)
- Duong Luong
- Kazan (Volga Region) Federal University, 18 Kremlyovskaya St., 420008 Kazan, Russia
| | - Abdulla A Yergeshov
- Kazan (Volga Region) Federal University, 18 Kremlyovskaya St., 420008 Kazan, Russia
| | - Mohamed Zoughaib
- Kazan (Volga Region) Federal University, 18 Kremlyovskaya St., 420008 Kazan, Russia
| | - Farida R Sadykova
- Kazan (Volga Region) Federal University, 18 Kremlyovskaya St., 420008 Kazan, Russia
| | - Bulat I Gareev
- Kazan (Volga Region) Federal University, 18 Kremlyovskaya St., 420008 Kazan, Russia
| | - Irina N Savina
- School of Pharmacy and Biomolecular Sciences, University of Brighton, Brighton BN2 4GJ, UK
| | - Timur I Abdullin
- Kazan (Volga Region) Federal University, 18 Kremlyovskaya St., 420008 Kazan, Russia.
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Raja FNS, Worthington T, Isaacs MA, Forto Chungong L, Burke B, Addison O, Martin RA. The Antimicrobial Efficacy of Hypoxia Mimicking Cobalt Oxide Doped Phosphate-Based Glasses against Clinically Relevant Gram Positive, Gram Negative Bacteria and a Fungal Strain. ACS Biomater Sci Eng 2019; 5:283-293. [PMID: 33405859 DOI: 10.1021/acsbiomaterials.8b01045] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Bioactive phosphate glasses are of considerable interest for a range of soft and hard tissue engineering applications. The glasses are degradable and can release biologically important ions in a controlled manner. The glasses can also potentially be used as an antimicrobial delivery system. In the given study, novel cobalt-doped phosphate-based glasses, (P2O5)50(Na2O)20(CaO)30-x(CoO)x where 0 ≤ x (mol %) ≤ 10, were manufactured and characterized. As the cobalt oxide concentration increased, the rate of dissolution was observed to decrease. The antimicrobial potential of the glasses was studied using direct and indirect contact methods against both Escherichia coli (NCTC 10538) Staphylococcus aureus (ATCC 6538) and Candida albicans (ATCC 76615). The results showed strong, time dependent, and strain specific antimicrobial activity of the glasses against microorganisms when in direct contact. Antimicrobial activity (R) ≥ 2 was observed within 2 h against Escherichia coli, whereas a similar effect was achieved in 6 h against Staphylococcus aureus and Candida albicans. However, when in indirect contact, the dissolution products from the bioactive glasses failed to show an antimicrobial effect. Following direct exposure to the glasses for 7 days, osteoblast-like SAOS-2 cells showed a 5-fold increase in VEGF mRNA while THP-1 monocytic cells showed a 4-fold increase in VEGF mRNA expression when exposed to 10% CoO-doped glass compared with the cobalt free control glass. Endothelial cells stimulated with conditioned medium taken from cell cultures of THP-1 monocytes exposed to 10% CoO doped glass showed clear tubelike structure (blood vessel) formation after 4 h.
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Affiliation(s)
- Farah N S Raja
- School of Life & Health Science and Aston Research Centre for Healthy Ageing, Aston University, Aston Triangle, Birmingham, B4 7ET, United Kingdom
| | - T Worthington
- School of Life & Health Science and Aston Research Centre for Healthy Ageing, Aston University, Aston Triangle, Birmingham, B4 7ET, United Kingdom
| | - Mark A Isaacs
- Department of Chemistry, University College London, 20 Gordon Street, Kings Cross, London, WC1H 0AJ, United Kingdom
| | - Louis Forto Chungong
- School of Engineering & Applied Science and Aston Institute of Materials Research. Aston University, Aston Triangle, Birmingham, B4 7ET, United Kingdom
| | - Bernard Burke
- School of Life Sciences, Coventry University, Coventry, CV1 2DS, United Kingdom.,Biomaterials Unit, University of Birmingham School of Dentistry, Birmingham, B5 7EG, United Kingdom
| | - Owen Addison
- Biomaterials Unit, University of Birmingham School of Dentistry, Birmingham, B5 7EG, United Kingdom.,University of Alberta, School of Dentistry, Edmonton, Alberta Canada, T6G 1C9
| | - Richard A Martin
- School of Engineering & Applied Science and Aston Institute of Materials Research. Aston University, Aston Triangle, Birmingham, B4 7ET, United Kingdom
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11
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Kargozar S, Baino F, Hamzehlou S, Hill RG, Mozafari M. Bioactive Glasses: Sprouting Angiogenesis in Tissue Engineering. Trends Biotechnol 2018; 36:430-444. [DOI: 10.1016/j.tibtech.2017.12.003] [Citation(s) in RCA: 191] [Impact Index Per Article: 31.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2017] [Revised: 12/12/2017] [Accepted: 12/13/2017] [Indexed: 02/08/2023]
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12
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Peticone C, De Silva Thompson D, Owens GJ, Kim HW, Micheletti M, Knowles JC, Wall I. Towards modular bone tissue engineering using Ti–Co-doped phosphate glass microspheres: cytocompatibility and dynamic culture studies. J Biomater Appl 2017; 32:295-310. [DOI: 10.1177/0885328217720812] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The production of large quantities of functional vascularized bone tissue ex vivo still represent an unmet clinical challenge. Microcarriers offer a potential solution to scalable manufacture of bone tissue due to their high surface area-to-volume ratio and the capacity to be assembled using a modular approach. Microcarriers made of phosphate bioactive glass doped with titanium dioxide have been previously shown to enhance proliferation of osteoblast progenitors and maturation towards functional osteoblasts. Furthemore, doping with cobalt appears to mimic hypoxic conditions that have a key role in promoting angiogenesis. This characteristic could be exploited to meet the clinical requirement of producing vascularized units of bone tissue. In the current study, the human osteosarcoma cell line MG-63 was cultured on phosphate glass microspheres doped with 5% mol titanium dioxide and different concentrations of cobalt oxide (0%, 2% and 5% mol), under static and dynamic conditions (150 and 300 rpm on an orbital shaker). Cell proliferation and the formation of aggregates of cells and microspheres were observed over a period of two weeks in all glass compositions, thus confirming the biocompatibility of the substrate and the suitability of this system for the formation of compact micro-units of tissue. At the concentrations tested, cobalt was not found to be cytotoxic and did not alter cell metabolism. On the other hand, the dynamic environment played a key role, with moderate agitation having a positive effect on cell proliferation while higher agitation resulting in impaired cell growth. Finally, in static culture assays, the capacity of cobalt doping to induce vascular endothelial growth factor (VEGF) upregulation by osteoblastic cells was observed, but was not found to increase linearly with cobalt oxide content. In conclusion, Ti–Co phosphate glasses were found to support osteoblastic cell growth and aggregate formation that is a necessary precursor to tissue formation and the upregaulation of VEGF production can potentially support vascularization.
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Affiliation(s)
- Carlotta Peticone
- Department of Biochemical Engineering, Bernard Katz Building, University College London, Gower Street, London, UK
| | - David De Silva Thompson
- Department of Biochemical Engineering, Bernard Katz Building, University College London, Gower Street, London, UK
| | - Gareth J Owens
- Division of Biomaterials and Tissue Engineering, UCL Eastman Dental Institute, University College London, London, UK
| | - Hae-Won Kim
- Department of Nanobiomedical Science & Institute for Tissue Regeneration Engineering, Dankook University, Cheonan, Republic of Korea
| | - Martina Micheletti
- Department of Biochemical Engineering, Bernard Katz Building, University College London, Gower Street, London, UK
| | - Jonathan C Knowles
- Division of Biomaterials and Tissue Engineering, UCL Eastman Dental Institute, University College London, London, UK
- Department of Nanobiomedical Science & Institute for Tissue Regeneration Engineering, Dankook University, Cheonan, Republic of Korea
- Discoveries Centre for Regenerative and Precision Medicine, UCL Campus, Gower Street, London, UK
| | - Ivan Wall
- Department of Biochemical Engineering, Bernard Katz Building, University College London, Gower Street, London, UK
- Department of Nanobiomedical Science & Institute for Tissue Regeneration Engineering, Dankook University, Cheonan, Republic of Korea
- Discoveries Centre for Regenerative and Precision Medicine, UCL Campus, Gower Street, London, UK
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Colquhoun R, Gadegaard N, Healy DM, Tanner KE. Characterisation of CorGlaes(®) Pure 107 fibres for biomedical applications. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2016; 27:149. [PMID: 27582069 PMCID: PMC5007269 DOI: 10.1007/s10856-016-5752-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/30/2016] [Accepted: 07/07/2016] [Indexed: 06/06/2023]
Abstract
A degradable ultraphosphate (55 mol % P2O5) quinternary phosphate glass composition has been characterised in terms of its chemical, mechanical and degradation properties both as a bulk material and after drawing into fibres. This glass formulation displayed a large processing window simplifying fibre drawing. The fibres displayed stiffness and strength of 65.5 ± 20.8 GPa and 426±143 MPa. While amorphous discs of the glass displayed a linear dissolution rate of 0.004 mg cm(-2) h(-1) at 37 °C, in a static solution with a reduction in media pH. Once drawn into fibres, the dissolution process dropped the pH to <2 in distilled water, phosphate buffer saline and corrected-simulated body fluid, displaying an autocatalytic effect with >90 % mass loss in 4 days, about seven times faster than anticipated for this solution rate. Only cell culture media was able to buffer the pH taking over a week for full fibre dissolution, however, still four times faster dissolution rate than as a bulk material. However, at early times the development of a HCA layer was seen indicating potential bioactivity. Thus, although initial analysis indicated potential orthopaedic implant applications, autocatalysis leads to accelerating degradation in vitro.
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Affiliation(s)
- Ross Colquhoun
- Biomedical Engineering Division, School of Engineering, University of Glasgow, Glasgow, G12 8QQ, UK
- Present address: Scottish Enterprise, Glasgow, G2 8LU, UK
| | - Nikolaj Gadegaard
- Biomedical Engineering Division, School of Engineering, University of Glasgow, Glasgow, G12 8QQ, UK
| | - David M Healy
- Giltech Ltd, 12 North Harbour St, Ayr, KA8 8BN, UK
- Present address: IDP Services Ltd., Ayr, KA7 4EG, UK
| | - K Elizabeth Tanner
- Biomedical Engineering Division, School of Engineering, University of Glasgow, Glasgow, G12 8QQ, UK.
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Popescu RA, Magyari K, Vulpoi A, Trandafir DL, Licarete E, Todea M, Ştefan R, Voica C, Vodnar DC, Simon S, Papuc I, Baia L. Bioactive and biocompatible copper containing glass-ceramics with remarkable antibacterial properties and high cell viability designed for future in vivo trials. Biomater Sci 2016; 4:1252-65. [DOI: 10.1039/c6bm00270f] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The efficiency of 60SiO2·(32 − x) CaO·8P2O5·xCuO (mol%) glass-ceramics were proved, and was determined the most appropriate composition for further in vivo trials.
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Al Qaysi M, Walters NJ, Foroutan F, Owens GJ, Kim HW, Shah R, Knowles JC. Strontium- and calcium-containing, titanium-stabilised phosphate-based glasses with prolonged degradation for orthopaedic tissue engineering. J Biomater Appl 2015; 30:300-10. [PMID: 26023179 PMCID: PMC4579407 DOI: 10.1177/0885328215588898] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Strontium- and calcium-releasing, titanium-stabilised phosphate-based glasses with a controlled degradation rate are currently under development for orthopaedic tissue engineering applications. Ca and/or Sr were incorporated at varying concentrations in quaternary phosphate-based glasses, in order to promote osteoinduction. Ti was incorporated at a fixed concentration in order to prolong degradation. Glasses of the general formula (P2O5)–(Na2O)–(TiO2)–(CaO)–(SrO) were prepared via the melt-quench technique. The materials were characterised by energy-dispersive X-ray spectroscopy, X-ray diffraction, 31P magic angle spinning nuclear magnetic resonance, Fourier transform infrared spectroscopy, differential thermal analysis and density determination. The dissolution rate in distilled water was determined by measuring mass loss, ion release and pH change over a two-week period. In addition, the cytocompatibility and alkaline phosphatase activity of an osteoblast-like cell line cultured on the surface of glass discs was assessed. The glasses were shown to be amorphous and contained Q1, Q2 and Q3 species. Fourier transform infrared spectroscopy revealed small changes in the glass structure as Ca was substituted with Sr and differential thermal analysis confirmed a decrease in crystallisation temperature with increasing Sr content. Degradation and ion release studies also showed that mass loss was positively correlated with Sr content. These results were attributed to the lower electronegativity of Sr in comparison to Ca favouring the formation of phosphate-based mineral phases. All compositions supported cell proliferation and survival and induced at least 2.3-fold alkaline phosphatase activity relative to the control. Glass containing 17.5 mol% Sr had 3.6-fold greater alkaline phosphatase activity than the control. The gradual release of Ca and Sr supported osteoinduction, indicating their potential suitability in orthopaedic tissue engineering applications.
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Affiliation(s)
- Mustafa Al Qaysi
- Division of Biomaterials and Tissue Engineering, UCL Eastman Dental Institute, London, UK
| | - Nick J Walters
- Division of Biomaterials and Tissue Engineering, UCL Eastman Dental Institute, London, UK Department of Electronics and Communication Engineering, Tampere University of Technology, Tampere, Finland Adult Stem Cell Group, Institute of Biomedical Technology, University of Tampere, Tampere, Finland BioMediTech (Institute of Biosciences and Medical Technology), Tampere, Finland
| | - Farzad Foroutan
- Division of Biomaterials and Tissue Engineering, UCL Eastman Dental Institute, London, UK Department of Chemistry, Faculty of Mathematical and Physical Sciences, University College London, London, UK
| | - Gareth J Owens
- Division of Biomaterials and Tissue Engineering, UCL Eastman Dental Institute, London, UK
| | - Hae-Won Kim
- Department of Nanobiomedical Science and BK21 Plus NBM Global Research Center for Regenerative Medicine, Dankook University, Cheonan, Republic of Korea Institute of Tissue Regeneration Engineering and College of Dentistry, Dankook University, Cheonan, Republic of Korea
| | - Rishma Shah
- Unit of Orthodontics, Department of Craniofacial Growth and Development, UCL Eastman Dental Institute, London, UK
| | - Jonathan C Knowles
- Division of Biomaterials and Tissue Engineering, UCL Eastman Dental Institute, London, UK Department of Nanobiomedical Science and BK21 Plus NBM Global Research Center for Regenerative Medicine, Dankook University, Cheonan, Republic of Korea
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Tian T, Han Y, Ma B, Wu C, Chang J. Novel Co-akermanite (Ca2CoSi2O7) bioceramics with the activity to stimulate osteogenesis and angiogenesis. J Mater Chem B 2015; 3:6773-6782. [DOI: 10.1039/c5tb01244a] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
Both osteogenesis and angiogenesis of bioactive materials play the vital role in the regeneration of large skeletal defects.
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Affiliation(s)
- Tian Tian
- Biomaterials and Tissue Engineering Research Center
- Shanghai Institute of Ceramics
- Chinese Academy of Sciences
- Shanghai 200050
- China
| | - Yan Han
- Med-X Research Institute
- Department of Biomedical Engineering
- Shanghai Jiaotong University
- Shanghai 200030
- China
| | - Bing Ma
- Biomaterials and Tissue Engineering Research Center
- Shanghai Institute of Ceramics
- Chinese Academy of Sciences
- Shanghai 200050
- China
| | - Chengtie Wu
- Biomaterials and Tissue Engineering Research Center
- Shanghai Institute of Ceramics
- Chinese Academy of Sciences
- Shanghai 200050
- China
| | - Jiang Chang
- Biomaterials and Tissue Engineering Research Center
- Shanghai Institute of Ceramics
- Chinese Academy of Sciences
- Shanghai 200050
- China
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Mertens JP, Sugg KB, Lee JD, Larkin LM. Engineering muscle constructs for the creation of functional engineered musculoskeletal tissue. Regen Med 2014; 9:89-100. [PMID: 24351009 DOI: 10.2217/rme.13.81] [Citation(s) in RCA: 64] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Volumetric muscle loss (VML) is a disabling condition in which current clinical procedures are suboptimal. The field of tissue engineering has many promising strategies for the creation of functional skeletal muscle in vitro. However, there are still two key limitations that prevent it from becoming a solution for treating VML. First, engineered muscle tissue must be biocompatible to facilitate muscle tissue regrowth without generating an immune response. Second, engineered muscle constructs must be scaled up to facilitate replacement of clinically relevant volumes of tissue (centimeters in diameter). There are currently no tissue engineering strategies to produce tissue constructs that are both biocompatible and large enough to facilitate clinical repair. However, recent advances in tissue engineering using synthetic scaffolds, native scaffolds, or scaffold-free approaches may lead to a solution for repair of VML injuries.
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Affiliation(s)
- Jacob P Mertens
- Molecular & Integrative Physiology, University of Michigan, MI, USA
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