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Hu CX, Read O, Shin Y, Chen Y, Wang J, Boyes M, Zeng N, Panigrahi A, Kostarelos K, Larrosa I, Vranic S, Casiraghi C. Effects of Lateral Size, Thickness, and Stabilizer Concentration on the Cytotoxicity of Defect-Free Graphene Nanosheets: Implications for Biological Applications. ACS APPLIED NANO MATERIALS 2022; 5:12626-12636. [PMID: 36185165 PMCID: PMC9513747 DOI: 10.1021/acsanm.2c02403] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/01/2022] [Accepted: 08/25/2022] [Indexed: 06/16/2023]
Abstract
In this work, we apply liquid cascade centrifugation to highly concentrated graphene dispersions produced by liquid-phase exfoliation in water with an insoluble bis-pyrene stabilizer to obtain fractions containing nanosheets with different lateral size distributions. The concentration, stability, size, thickness, and the cytotoxicity profile are studied as a function of the initial stabilizer concentration for each fraction. Our results show that there is a critical initial amount of stabilizer (0.4 mg/mL) above which the dispersions show reduced concentration, stability, and biocompatibility, no matter the lateral size of the flakes.
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Affiliation(s)
- Chen-Xia Hu
- Department
of Chemistry, University of Manchester, Oxford Road, Manchester M13 9PL, UK
| | - Oliver Read
- Department
of Chemistry, University of Manchester, Oxford Road, Manchester M13 9PL, UK
| | - Yuyoung Shin
- Department
of Chemistry, University of Manchester, Oxford Road, Manchester M13 9PL, UK
| | - Yingxian Chen
- Nanomedicine
Lab, Faculty of Biology, Medicine and Health, AV Hill Building, University of Manchester, Manchester M13 9PL, UK
- National
Graphene Institute, University of Manchester, Booth Street East, Manchester M13 9PL, UK
| | - Jingjing Wang
- Department
of Chemistry, University of Manchester, Oxford Road, Manchester M13 9PL, UK
| | - Matthew Boyes
- Department
of Chemistry, University of Manchester, Oxford Road, Manchester M13 9PL, UK
| | - Niting Zeng
- Department
of Chemistry, University of Manchester, Oxford Road, Manchester M13 9PL, UK
| | - Adyasha Panigrahi
- Department
of Chemistry, University of Manchester, Oxford Road, Manchester M13 9PL, UK
| | - Kostas Kostarelos
- Nanomedicine
Lab, Faculty of Biology, Medicine and Health, AV Hill Building, University of Manchester, Manchester M13 9PL, UK
- National
Graphene Institute, University of Manchester, Booth Street East, Manchester M13 9PL, UK
- Catalan
Institute of Nanoscience and Nanotechnology (ICN2), UAB Campus Bellaterra, Barcelona 08193, Spain
| | - Igor Larrosa
- Department
of Chemistry, University of Manchester, Oxford Road, Manchester M13 9PL, UK
| | - Sandra Vranic
- Nanomedicine
Lab, Faculty of Biology, Medicine and Health, AV Hill Building, University of Manchester, Manchester M13 9PL, UK
- National
Graphene Institute, University of Manchester, Booth Street East, Manchester M13 9PL, UK
| | - Cinzia Casiraghi
- Department
of Chemistry, University of Manchester, Oxford Road, Manchester M13 9PL, UK
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2
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Bai J, Zhang M, Wang X, Zhang J, Yang Z, Fan L, An Y, Guan R. Combination of Micelle Collapse and CuNi Surface Dissolution for Electrodeposition of Magnetic Freestanding Chitosan Film. NANOMATERIALS 2022; 12:nano12152629. [PMID: 35957059 PMCID: PMC9370670 DOI: 10.3390/nano12152629] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/11/2022] [Revised: 07/16/2022] [Accepted: 07/28/2022] [Indexed: 11/29/2022]
Abstract
Magnetic chitosan hydrogel has aroused immense attention in recent years due to their biomedical significance and magnetic responsiveness. Here, A new electrodeposition method is reported for the fabrication of a novel CuNi-based magnetic chitosan freestanding film (MCFF) in an acidic chitosan plating bath containing SDS-modified CuNi NPs. Contrary to chitosan’s anodic and cathodic deposition, which typically involves electrochemical oxidation, the synthetic process is triggered by coordination of chitosan with Cu and Ni ions in situ generated by the controlled surface dissolution of the suspended NPs with the acidic plating bath. The NPs provide not only the ions required for chitosan growth but also become entrapped during electrodeposition, thereby endowing the composite with magnetic properties. The obtained MCFF offers a wide range of features, including good mechanical strength, magnetic properties, homogeneity, and morphological transparency. Besides the fundamental interest of the synthesis itself, sufficient mechanical strength ensures that the hydrogel can be used by either peeling it off of the electrode or by directly building a complex hydrogel electrode. Its fast and easy magnetic steering, separation and recovery, large surface area, lack of secondary pollution, and strong chelating capability could lead to it finding applications as an electrochemical detector or adsorbent.
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Affiliation(s)
- Jingyuan Bai
- School of Materials Science and Engineering, Northeastern University, Shenyang 110819, China; (J.B.); (M.Z.); (X.W.)
| | - Meilin Zhang
- School of Materials Science and Engineering, Northeastern University, Shenyang 110819, China; (J.B.); (M.Z.); (X.W.)
| | - Xuejiao Wang
- School of Materials Science and Engineering, Northeastern University, Shenyang 110819, China; (J.B.); (M.Z.); (X.W.)
| | - Jin Zhang
- Engineering Research Center of Continuous Extrusion, Ministry of Education, Dalian Jiaotong University, Dalian 116028, China; (Z.Y.); (L.F.)
- State Key Laboratory of Solidification Processing, Center of Advanced Lubrication and Seal Materials, Northwestern Polytechnical University, Xi’an 710072, China;
- Correspondence: (J.Z.); (R.G.)
| | - Zhou Yang
- Engineering Research Center of Continuous Extrusion, Ministry of Education, Dalian Jiaotong University, Dalian 116028, China; (Z.Y.); (L.F.)
| | - Longyi Fan
- Engineering Research Center of Continuous Extrusion, Ministry of Education, Dalian Jiaotong University, Dalian 116028, China; (Z.Y.); (L.F.)
| | - Yanan An
- State Key Laboratory of Solidification Processing, Center of Advanced Lubrication and Seal Materials, Northwestern Polytechnical University, Xi’an 710072, China;
| | - Renguo Guan
- School of Materials Science and Engineering, Northeastern University, Shenyang 110819, China; (J.B.); (M.Z.); (X.W.)
- Engineering Research Center of Continuous Extrusion, Ministry of Education, Dalian Jiaotong University, Dalian 116028, China; (Z.Y.); (L.F.)
- Correspondence: (J.Z.); (R.G.)
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Abdul Aziz N, Tarmizi E, Razak C, Noor I. Impact of charge carrier transport properties on conductivity-temperature dependence of gellan gum-LiCF 3SO 3 biopolymer electrolyte. HIGH PERFORM POLYM 2022. [DOI: 10.1177/09540083221102743] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Charge carrier density, mobility and diffusivity are three important transport properties in determining the ionic conductivity as well as the performance of solid polymer electrolyte. In this work, biopolymer electrolytes samples were prepared using the solution casting method by complexing gellan gum with different concentrations of lithium trifluoromethanesulfonate (3–15 wt.%). The values of charge carrier concentration, mobility, and diffusivity for electrolyte samples were estimated by fitting the Nyquist plot with an equation developed based on electrical impedance spectroscopy. At room temperature, the optimum electrolyte conductivity is 1.29×10−8 Scm−1 at 6 wt.% salt concentration. This result was supported by the highest percentage of free ions, 31.45%, observed in the FTIR method. As the temperature increases, the ionic conductivity increases to the optimum value before dropping. The highest conductivity of each sample was obtained at different temperatures (80°C–90°C) using the impedance method, whereas the percentage area of free ions was highest at 80°C for all samples with FTIR analysis. Overall, the ionic conductivity of this system has been dominated by the carrier charge density. Results suggest that, under these experimental conditions, electrical impedance spectroscopy is suitable for evaluating the charge transport properties at low temperatures.
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Affiliation(s)
- N.A Abdul Aziz
- Physics Division, Centre of Foundation Studies for Agricultural Science, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia
- Physics Department, Faculty of Science, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor,Malaysia
| | - E.Z.M Tarmizi
- Physics Division, Centre of Foundation Studies for Agricultural Science, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia
- Physics Department, Faculty of Science, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor,Malaysia
| | - C.S.C Razak
- Physics Department, Faculty of Science, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor,Malaysia
| | - I.M Noor
- Physics Division, Centre of Foundation Studies for Agricultural Science, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia
- Physics Department, Faculty of Science, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor,Malaysia
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Oliveira AML, Machado M, Silva GA, Bitoque DB, Tavares Ferreira J, Pinto LA, Ferreira Q. Graphene Oxide Thin Films with Drug Delivery Function. NANOMATERIALS 2022; 12:nano12071149. [PMID: 35407267 PMCID: PMC9000550 DOI: 10.3390/nano12071149] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/03/2022] [Revised: 03/24/2022] [Accepted: 03/28/2022] [Indexed: 02/04/2023]
Abstract
Graphene oxide has been used in different fields of nanomedicine as a manager of drug delivery due to its inherent physical and chemical properties that allow its use in thin films with biomedical applications. Several studies demonstrated its efficacy in the control of the amount and the timely delivery of drugs when it is incorporated in multilayer films. It has been demonstrated that oxide graphene layers are able to work as drug delivery or just to delay consecutive drug dosage, allowing the operation of time-controlled systems. This review presents the latest research developments of biomedical applications using graphene oxide as the main component of a drug delivery system, with focus on the production and characterization of films, in vitro and in vivo assays, main applications of graphene oxide biomedical devices, and its biocompatibility properties.
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Affiliation(s)
- Alexandra M. L. Oliveira
- Instituto de Telecomunicações, Avenida Rovisco Pais, 1049-001 Lisbon, Portugal;
- iNOVA4Health, CEDOC Chronic Diseases Research Centre, NOVA Medical School, Universidade Nova de Lisboa, Campo Mártires da Pátria 130, 1169-056 Lisboa, Portugal; (G.A.S.); (D.B.B.)
- NOVA Medical School, Faculdade de Ciências Médicas, Universidade Nova de Lisboa, 1169-056 Lisbon, Portugal
- Correspondence: (A.M.L.O.); (Q.F.)
| | - Mónica Machado
- Instituto de Telecomunicações, Avenida Rovisco Pais, 1049-001 Lisbon, Portugal;
- iNOVA4Health, CEDOC Chronic Diseases Research Centre, NOVA Medical School, Universidade Nova de Lisboa, Campo Mártires da Pátria 130, 1169-056 Lisboa, Portugal; (G.A.S.); (D.B.B.)
- NOVA Medical School, Faculdade de Ciências Médicas, Universidade Nova de Lisboa, 1169-056 Lisbon, Portugal
| | - Gabriela A. Silva
- iNOVA4Health, CEDOC Chronic Diseases Research Centre, NOVA Medical School, Universidade Nova de Lisboa, Campo Mártires da Pátria 130, 1169-056 Lisboa, Portugal; (G.A.S.); (D.B.B.)
- NOVA Medical School, Faculdade de Ciências Médicas, Universidade Nova de Lisboa, 1169-056 Lisbon, Portugal
| | - Diogo B. Bitoque
- iNOVA4Health, CEDOC Chronic Diseases Research Centre, NOVA Medical School, Universidade Nova de Lisboa, Campo Mártires da Pátria 130, 1169-056 Lisboa, Portugal; (G.A.S.); (D.B.B.)
- NOVA Medical School, Faculdade de Ciências Médicas, Universidade Nova de Lisboa, 1169-056 Lisbon, Portugal
| | - Joana Tavares Ferreira
- Ophthalmology Department, Centro Hospitalar Universitário de Lisboa Norte, 1649-035 Lisbon, Portugal; (J.T.F.); (L.A.P.)
- Visual Sciences Study Centre, Faculty of Medicine, Universidade de Lisboa, 1649-028 Lisbon, Portugal
| | - Luís Abegão Pinto
- Ophthalmology Department, Centro Hospitalar Universitário de Lisboa Norte, 1649-035 Lisbon, Portugal; (J.T.F.); (L.A.P.)
- Visual Sciences Study Centre, Faculty of Medicine, Universidade de Lisboa, 1649-028 Lisbon, Portugal
| | - Quirina Ferreira
- Instituto de Telecomunicações, Avenida Rovisco Pais, 1049-001 Lisbon, Portugal;
- Correspondence: (A.M.L.O.); (Q.F.)
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Abstract
The systematic study of nanoparticle-biological interactions requires particles to be reproducibly dispersed in relevant fluids along with further development in the identification of biologically relevant structural details at the materials-biology interface. Here, we develop a biocompatible long-term colloidally stable water dispersion of few-layered graphene nanoflakes in the biological exposure medium in which it will be studied. We also report the study of the orientation and functionality of key proteins of interest in the biolayer (corona) that are believed to mediate most of the early biological interactions. The evidence accumulated shows that graphene nanoflakes are rich in effective apolipoprotein A-I presentation, and we are able to map specific functional epitopes located in the C-terminal portion that are known to mediate the binding of high-density lipoprotein to binding sites in receptors that are abundant in the liver. This could suggest a way of connecting the materials' properties to the biological outcomes.
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6
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Santos LF, Correia IJ, Silva AS, Mano JF. Biomaterials for drug delivery patches. Eur J Pharm Sci 2018; 118:49-66. [PMID: 29572160 DOI: 10.1016/j.ejps.2018.03.020] [Citation(s) in RCA: 73] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2018] [Revised: 03/12/2018] [Accepted: 03/19/2018] [Indexed: 01/22/2023]
Abstract
The limited efficiency of conventional drugs has been instigated the development of new and more effective drug delivery systems (DDS). Transdermal DDS, are associated with numerous advantages such its painless application and less frequent replacement and greater flexibility of dosing, features that triggered the research and development of such devices. Such systems have been produced using either biopolymer; or synthetic polymers. Although the first ones are safer, biocompatible and present a controlled degradation by human enzymes or water, the second ones are the most currently available in the market due to their greater mechanical resistance and flexibility, and non-degradation over time. This review highlights the most recent advances (mainly in the last five years) of patches aimed for transdermal drug delivery, focusing on the different materials (natural, synthetic and blends) and latest designs for the development of such devices, emphasizing also their combination with drug carriers that enable enhanced drug solubility and a more controlled release of the drug over the time. The benefits and limitations of different patches formulations are considered with reference to their appliance to transdermal drug delivery. Furthermore, a record of the currently available patches on the market is given, featuring their most relevant characteristics. Finally, a list of most recent/ongoing clinical trials regarding the use of patches for skin disorders is detailed and critical insights on the current state of patches for transdermal drug delivery are also provided.
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Affiliation(s)
- Lúcia F Santos
- Department of Chemistry, CICECO, University of Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal.
| | - Ilídio J Correia
- CICS UBI, Centro de Investigação em Ciências da Saúde, Faculdade de Ciências da Saúde, Universidade da Beira Interior, Av. Infante D Henrique, 6200-506 Covilhã, Portugal.
| | - A Sofia Silva
- Department of Chemistry, CICECO, University of Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal.
| | - João F Mano
- Department of Chemistry, CICECO, University of Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal.
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7
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Abstract
This review is focused on the use of membranes for the specific application of bone regeneration. The first section focuses on the relevance of membranes in this context and what are the specifications that they should possess to improve the regeneration of bone. Afterward, several techniques to engineer bone membranes by using "bulk"-like methods are discussed, where different parameters to induce bone formation are disclosed in a way to have desirable structural and functional properties. Subsequently, the production of nanostructured membranes using a bottom-up approach is discussed by highlighting the main advances in the field of bone regeneration. Primordial importance is given to the promotion of osteoconductive and osteoinductive capability during the membrane design. Whenever possible, the films prepared using different techniques are compared in terms of handability, bone guiding ability, osteoinductivity, adequate mechanical properties, or biodegradability. A last chapter contemplates membranes only composed by cells, disclosing their potential to regenerate bone.
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Affiliation(s)
- Sofia G Caridade
- Department of Chemistry CICECO, Aveiro Institute of Materials, University of Aveiro , Aveiro, Portugal
| | - João F Mano
- Department of Chemistry CICECO, Aveiro Institute of Materials, University of Aveiro , Aveiro, Portugal
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8
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Criado M, Sanz B, Goya GF, Mijangos C, Hernández R. Magnetically responsive biopolymeric multilayer films for local hyperthermia. J Mater Chem B 2017; 5:8570-8578. [PMID: 32264525 DOI: 10.1039/c7tb02361h] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
We present a proof of concept on the use of thermomagnetic polymer films (TMFs) as heating devices for magnetic hyperthermia in vitro. The TMFs were prepared through spray assisted layer-by-layer assembly of polysaccharides and magnetic iron oxide nanoparticles, yielding an alternate magnetic-polymer multilayer structure. By applying a remote alternating magnetic field (AMF) (f = 180 kHz; H = 35 kA m-1) we increased the temperature of the TMFs in a thickness-dependent way, up to 12 °C within the first 5 minutes. To test our films as heating substrates for magnetic hyperthermia, a series of in vitro experiments were designed using human neuroblastoma SH-SY5Y cells, known by their tolerance to thermal stress. The application of two AMF cycles (30 minutes each) showed that the exogenous magnetic hyperthermia resulted in an 85% reduction of cell viability. This capacity of the TMFs of hyperthermia-mediated cell killing using a remote AMF opens new options for the treatment of small and superficial tumor lesions by means of remotely-triggered magnetic hyperthermia.
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Affiliation(s)
- M Criado
- Instituto de Ciencia y Tecnología de Polímeros (ICTP-CSIC), c/Juan de la Cierva, 3, 28006 Madrid, Spain.
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Rodrigues JR, Alves NM, Mano JF. Nacre-inspired nanocomposites produced using layer-by-layer assembly: Design strategies and biomedical applications. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2017; 76:1263-1273. [DOI: 10.1016/j.msec.2017.02.043] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/06/2016] [Revised: 12/05/2016] [Accepted: 02/10/2017] [Indexed: 02/08/2023]
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Silva M, Caridade SG, Vale AC, Cunha E, Sousa MP, Mano JF, Paiva MC, Alves NM. Biomedical films of graphene nanoribbons and nanoflakes with natural polymers. RSC Adv 2017. [DOI: 10.1039/c7ra04173j] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Novel nanostructured free-standing films based on chitosan, alginate and functionalized flake and ribbon-shaped graphene were developed using the layer-by-layer process.
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Affiliation(s)
- Magda Silva
- 3B's Research Group
- Biomaterials, Biodegradables and Biomimetics
- University of Minho
- Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine
- Guimarães
| | - Sofia G. Caridade
- 3B's Research Group
- Biomaterials, Biodegradables and Biomimetics
- University of Minho
- Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine
- Guimarães
| | - Ana C. Vale
- ICVS/3B's
- Associate PT Government Laboratory
- Braga/Guimarães
- Portugal
- Institute for Polymers and Composites/I3N
| | - Eunice Cunha
- Institute for Polymers and Composites/I3N
- Department of Polymer Engineering
- University of Minho
- 4800-058 Guimarães
- Portugal
| | - Maria P. Sousa
- 3B's Research Group
- Biomaterials, Biodegradables and Biomimetics
- University of Minho
- Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine
- Guimarães
| | - João F. Mano
- 3B's Research Group
- Biomaterials, Biodegradables and Biomimetics
- University of Minho
- Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine
- Guimarães
| | - Maria C. Paiva
- Institute for Polymers and Composites/I3N
- Department of Polymer Engineering
- University of Minho
- 4800-058 Guimarães
- Portugal
| | - Natália M. Alves
- 3B's Research Group
- Biomaterials, Biodegradables and Biomimetics
- University of Minho
- Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine
- Guimarães
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