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Skrodzki D, Molinaro M, Brown R, Moitra P, Pan D. Synthesis and Bioapplication of Emerging Nanomaterials of Hafnium. ACS NANO 2024; 18:1289-1324. [PMID: 38166377 DOI: 10.1021/acsnano.3c08917] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/04/2024]
Abstract
A significant amount of progress in nanotechnology has been made due to the development of engineered nanoparticles. The use of metallic nanoparticles for various biomedical applications has been extensively investigated. Biomedical research is highly focused on them because of their inert nature, nanoscale structure, and similar size to many biological molecules. The intrinsic characteristics of these particles, including electronic, optical, physicochemical, and surface plasmon resonance, that can be altered by altering their size, shape, environment, aspect ratio, ease of synthesis, and functionalization properties, have led to numerous biomedical applications. Targeted drug delivery, sensing, photothermal and photodynamic therapy, and imaging are some of these. The promising clinical results of NBTXR3, a high-Z radiosensitizing nanomaterial derived from hafnium, have demonstrated translational potential of this metal. This radiosensitization approach leverages the dependence of energy attenuation on atomic number to enhance energy-matter interactions conducive to radiation therapy. High-Z nanoparticle localization in tumor issue differentially increases the effect of ionizing radiation on cancer cells versus nearby healthy ones and mitigates adverse effects by reducing the overall radiation burden. This principle enables material multifunctionality as contrast agents in X-ray-based imaging. The physiochemical properties of hafnium (Z = 72) are particularly advantageous for these applications. A well-placed K-edge absorption energy and high mass attenuation coefficient compared to elements in human tissue across clinical energy ranges leads to significant attenuation. Chemical reactivity allows for variety in nanoparticle synthesis, composition, and functionalization. Nanoparticles such as hafnium oxide exhibit excellent biocompatibility due to physiochemical inertness prior to incidence with ionizing radiation. Additionally, the optical and electronic properties are applicable in biosensing, optical component coatings, and semiconductors. The wide interest has prompted extensive research in design and synthesis to facilitate property fine-tuning. This review summarizes synthetic methods for hafnium-based nanomaterials and applications in therapy, imaging, and biosensing with a mechanistic focus. A discussion and future perspective section highlights clinical progress and elaborates on current challenges. By focusing on factors impacting applicational effectiveness and examining limitations this review aims to support researchers and expedite clinical translation of future hafnium-based nanomedicine.
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Affiliation(s)
- David Skrodzki
- Department of Materials Science and Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Matthew Molinaro
- Department of Engineering Science and Mechanics, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Richard Brown
- Department of Nuclear Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Parikshit Moitra
- Department of Nuclear Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Dipanjan Pan
- Department of Materials Science and Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
- Department of Nuclear Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
- Huck Institutes of the Life Sciences, 101 Huck Life Sciences Building, University Park, Pennsylvania 16802, United States
- Department of Biomedical Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
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Chernev A, Teng Y, Thakur M, Boureau V, Navratilova L, Cai N, Chen TH, Wen L, Artemov V, Radenovic A. Nature-Inspired Stalactite Nanopores for Biosensing and Energy Harvesting. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2023; 35:e2302827. [PMID: 37243375 DOI: 10.1002/adma.202302827] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/27/2023] [Revised: 05/24/2023] [Indexed: 05/28/2023]
Abstract
Nature provides a wide range of self-assembled structures from the nanoscale to the macroscale. Under the right thermodynamic conditions and with the appropriate material supply, structures like stalactites, icicles, and corals can grow. However, the natural growth process is time-consuming. This work demonstrates a fast, nature-inspired method for growing stalactite nanopores using heterogeneous atomic deposition of hafnium dioxide at the orifice of templated silicon nitride apertures. The stalactite nanostructures combine the benefits of reduced sensing region typically for 2-dimensional material nanopores with the asymmetric geometry of capillaries, resulting in ionic selectivity, stability, and scalability. The proposed growing method provides an adaptable nanopore platform for basic and applied nanofluidic research, including biosensing, energy science, and filtration technologies.
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Affiliation(s)
- Andrey Chernev
- Laboratory of Nanoscale Biology, Ecole Polytechnique Fédérale de Lausanne, Lausanne, 1015, Switzerland
| | - Yunfei Teng
- Laboratory of Nanoscale Biology, Ecole Polytechnique Fédérale de Lausanne, Lausanne, 1015, Switzerland
| | - Mukeshchand Thakur
- Laboratory of Nanoscale Biology, Ecole Polytechnique Fédérale de Lausanne, Lausanne, 1015, Switzerland
| | - Victor Boureau
- Interdisciplinary Centre for Electron Microscopy, Ecole Polytechnique Fédérale de Lausanne, Lausanne, 1015, Switzerland
| | - Lucie Navratilova
- Interdisciplinary Centre for Electron Microscopy, Ecole Polytechnique Fédérale de Lausanne, Lausanne, 1015, Switzerland
| | - Nianduo Cai
- Laboratory of Nanoscale Biology, Ecole Polytechnique Fédérale de Lausanne, Lausanne, 1015, Switzerland
| | - Tzu-Heng Chen
- Laboratory of Nanoscale Biology, Ecole Polytechnique Fédérale de Lausanne, Lausanne, 1015, Switzerland
| | - Liping Wen
- CAS Key Laboratory of Bio-Inspired Materials and Interfacial Science, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
- School of Future Technology, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Vasily Artemov
- Laboratory of Nanoscale Biology, Ecole Polytechnique Fédérale de Lausanne, Lausanne, 1015, Switzerland
| | - Aleksandra Radenovic
- Laboratory of Nanoscale Biology, Ecole Polytechnique Fédérale de Lausanne, Lausanne, 1015, Switzerland
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Kull M, Piirsoo HM, Tarre A, Mändar H, Tamm A, Jõgiaas T. Hardness, Modulus, and Refractive Index of Plasma-Assisted Atomic-Layer-Deposited Hafnium Oxide Thin Films Doped with Aluminum Oxide. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:nano13101607. [PMID: 37242023 DOI: 10.3390/nano13101607] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/14/2023] [Revised: 05/08/2023] [Accepted: 05/09/2023] [Indexed: 05/28/2023]
Abstract
Coatings with tunable refractive index and high mechanical resilience are useful in optical systems. In this work, thin films of HfO2 doped with Al2O3 were deposited on silicon at 300 °C by using plasma-enhanced atomic layer deposition (PE-ALD). The mainly amorphous 60-80 nm thick films consisted Al in the range of 2 to 26 at.%. The refractive indexes varied from 1.69 to 2.08 at the wavelength of 632 nm, and they consistently depended on the composition. The differences were higher in the UV spectral region. At the same time, the hardness of the films was from 12-15 GPa; the modulus was in the range of 160-180 GPa; and the mechanical properties did not have a good correlation with the deposited compositions. The deposition conditions, element contents, and refractive indexes at respective wavelengths were correlated. The results indicated that it is possible to tune optical properties and retain mechanical properties of atomic layer-deposited thin films of HfO2 with Al2O3 as doping oxide. Such films could be used as mechanically resilient and optically tunable coatings in, for instance, micro- or nano-electromechanical systems or transparent displays.
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Affiliation(s)
- Mikk Kull
- Department of Materials Science, Institute of Physics, University of Tartu, W. Ostwald Str. 1, EE50411 Tartu, Estonia
| | - Helle-Mai Piirsoo
- Department of Materials Science, Institute of Physics, University of Tartu, W. Ostwald Str. 1, EE50411 Tartu, Estonia
| | - Aivar Tarre
- Department of Materials Science, Institute of Physics, University of Tartu, W. Ostwald Str. 1, EE50411 Tartu, Estonia
| | - Hugo Mändar
- Department of Materials Science, Institute of Physics, University of Tartu, W. Ostwald Str. 1, EE50411 Tartu, Estonia
| | - Aile Tamm
- Department of Materials Science, Institute of Physics, University of Tartu, W. Ostwald Str. 1, EE50411 Tartu, Estonia
| | - Taivo Jõgiaas
- Department of Materials Science, Institute of Physics, University of Tartu, W. Ostwald Str. 1, EE50411 Tartu, Estonia
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Sosnov EA, Malkov AA, Malygin AA. Nanotechnology of Molecular Layering in Production of Inorganic and Hybrid Materials for Various Functional Purposes: II. Molecular Layering Technology and Prospects for Its Commercialization and Development in the XXI Century. RUSS J APPL CHEM+ 2021. [DOI: 10.1134/s1070427221090020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Ayyaru S, Ahn YH. Fabrication of a Novel Nanocomposite Ultrafiltration Membrane with Improved Antifouling Properties Using Functionalized HfO2 and Polyvinylidene Fluoride for Organic Foulant Mitigation. Ind Eng Chem Res 2020. [DOI: 10.1021/acs.iecr.0c03696] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Sivasankaran Ayyaru
- Department of Civil Engineering, Yeungnam University, Gyeongsan 38541, South Korea
| | - Young-Ho Ahn
- Department of Civil Engineering, Yeungnam University, Gyeongsan 38541, South Korea
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Ortiz-Dosal LC, Ángeles-Robles G, Kolosovas-Machuca ES. Use of hafnium(IV) oxide in biosensors. J Immunoassay Immunochem 2018; 39:471-484. [PMID: 30188776 DOI: 10.1080/15321819.2018.1517090] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Hafnium(IV) oxide is a material with properties that can increase the sensitivity, durability, and reliability of biosensors made from silicon dioxide and other semiconductor materials due to its high dielectric constant, thermodynamic stability, and the simplicity with which it can be deposited. This work describes the use of this material in biosensors based on field-effect transistors to detect ions and DNA, in immunosensors to detect an antigen-antibody complex, its use as a contrast material in computed tomography scans and the possibility of using it in optic biosensors in the infrared region. Its low cost and versatility in the field of biosensors is underscored.
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Affiliation(s)
- Luis Carlos Ortiz-Dosal
- a Doctorado Institucional en Ingeniería y Ciencia de Materiales (DICIM-UASLP) , Universidad Autónoma de San Luis Potosí , San Luis Potosí , México
| | - Gabriela Ángeles-Robles
- b Posgrado en Ciencias Interdisciplinarias, Instituto de Física , Universidad Autónoma de San Luis Potosí , San Luis Potosí , México
| | - Eleazar Samuel Kolosovas-Machuca
- c Coordinación para la Innovación y Aplicación de la Ciencia y la Tecnología , Universidad Autónoma de San Luis Potosí , San Luis Potosí , México
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8
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Effect of Brownian motion on reduced agglomeration of nanostructured metal oxide towards development of efficient cancer biosensor. Biosens Bioelectron 2018; 102:247-255. [DOI: 10.1016/j.bios.2017.11.004] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2017] [Revised: 10/13/2017] [Accepted: 11/01/2017] [Indexed: 12/11/2022]
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9
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Ortiz-Dosal LC, Kolosovas-Machuca ES, Carmen Rodríguez-Aranda M, López-Luna E, Hernández-Arriaga H, Vera-Reveles G, Gonzalez FJ. Bioanalysis by Immobilization of Antibodies on Hafnium(IV) Oxide with 3-Aminopropyltriethoxysilane. ANAL LETT 2017. [DOI: 10.1080/00032719.2017.1320666] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Luis C. Ortiz-Dosal
- Doctorado Institucional en Ingeniería y Ciencia de Materiales (DICIM-UASLP), Universidad Autónoma de San Luis Potosí, San Luis Potosí, San Luis Potosí, México
| | - Eleazar S. Kolosovas-Machuca
- Coordinación para la Innovación y Aplicación de la Ciencia y la Tecnología, Universidad Autónoma de San Luis Potosí, San Luis Potosí, San Luis Potosí, México
| | - M. Carmen Rodríguez-Aranda
- Coordinación para la Innovación y Aplicación de la Ciencia y la Tecnología, Universidad Autónoma de San Luis Potosí, San Luis Potosí, San Luis Potosí, México
| | - Edgar López-Luna
- Coordinación para la Innovación y Aplicación de la Ciencia y la Tecnología, Universidad Autónoma de San Luis Potosí, San Luis Potosí, San Luis Potosí, México
| | - Heber Hernández-Arriaga
- Coordinación para la Innovación y Aplicación de la Ciencia y la Tecnología, Universidad Autónoma de San Luis Potosí, San Luis Potosí, San Luis Potosí, México
| | - Gustavo Vera-Reveles
- Departamento de Ciencias Básicas, Instituto Tecnológico de San Luis Potosí, Soledad de Graciano Sánchez, San Luis Potosí, México
| | - Francisco J. Gonzalez
- Coordinación para la Innovación y Aplicación de la Ciencia y la Tecnología, Universidad Autónoma de San Luis Potosí, San Luis Potosí, San Luis Potosí, México
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A novel approach to low-temperature synthesis of cubic HfO 2 nanostructures and their cytotoxicity. Sci Rep 2017; 7:9351. [PMID: 28839143 PMCID: PMC5570928 DOI: 10.1038/s41598-017-07753-0] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2017] [Accepted: 06/27/2017] [Indexed: 12/24/2022] Open
Abstract
The development of a strategy to stabilise the cubic phase of HfO2 at lower temperatures is necessary for the emergence of unique properties that are not realised in the thermodynamically stable monoclinic phase. A very high temperature (>2600 °C) is required to produce the cubic phase of HfO2, whereas the monoclinic phase is stable at low temperature. Here, a novel rapid synthesis strategy was designed to develop highly crystalline, pure cubic-phase HfO2 nanoparticles (size <10 nm) using microwave irradiation. Furthermore, the as-prepared nanoparticles were converted to different morphologies (spherical nanoparticles and nanoplates) without compromising the cubic phase by employing a post-hydrothermal treatment in the presence of surface modifiers. The cytotoxicities and proliferative profiles of the synthesised cubic HfO2 nanostructures were investigated over the MCF-7 breast cancer cell line, along with caspase-3/7 activities. The low-temperature phase stabilisation was significantly attributed to surface imperfections (defects and deformations) induced in the crystal lattice by the desirable presence of Na2S·xH2O and NaOH. Our work provides unprecedented insight into the stabilisation of nanoscale cubic-phase HfO2 in ambient environments; the method could be extended to other challenging phases of nanomaterials.
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11
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Kalkan EB, Akbayrak S, Özkar S. Ruthenium(0) nanoparticles supported on nanohafnia: A highly active and long-lived catalyst in hydrolytic dehydrogenation of ammonia borane. MOLECULAR CATALYSIS 2017. [DOI: 10.1016/j.molcata.2016.11.042] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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12
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Erol K. DNA adsorption via Co(II) immobilized cryogels. JOURNAL OF MACROMOLECULAR SCIENCE PART A-PURE AND APPLIED CHEMISTRY 2016. [DOI: 10.1080/10601325.2016.1212310] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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13
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Hikosaka R, Nagata F, Tomita M, Kato K. Adsorption and desorption characteristics of DNA onto the surface of amino functional mesoporous silica with various particle morphologies. Colloids Surf B Biointerfaces 2016; 140:262-268. [DOI: 10.1016/j.colsurfb.2015.12.054] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2015] [Revised: 12/25/2015] [Accepted: 12/28/2015] [Indexed: 10/22/2022]
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Liu B, Liu J. Comprehensive Screen of Metal Oxide Nanoparticles for DNA Adsorption, Fluorescence Quenching, and Anion Discrimination. ACS APPLIED MATERIALS & INTERFACES 2015; 7:24833-8. [PMID: 26491955 DOI: 10.1021/acsami.5b08004] [Citation(s) in RCA: 86] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
Although DNA has been quite successful in metal cation detection, anion detectioin remains challenging because of the charge repulsion. Metal oxides represent a very important class of materials, and different oxides might interact with anions differently. In this work, a comprehensive screen of common metal oxide nanoparticles (MONPs) was carried out for their ability to adsorb DNA, quench fluorescence, and release adsorbed DNA in the presence of target anions. A total of 19 MONPs were studied, including Al2O3, CeO2, CoO, Co3O4, Cr2O3, Fe2O3, Fe3O4, In2O3, ITO, Mn2O3, NiO, SiO2, SnO2, a-TiO2 (anatase), r-TiO2 (rutile), WO3, Y2O3, ZnO, ZrO2. These MONPs have different DNA adsorption affinity. Some adsorb DNA without quenching the fluorescence, while others strongly quench adsorbed fluorophores. They also display different affinity toward anions probed by DNA desorption. Finally, CeO2, Fe3O4, and ZnO were used to form a sensor array to discriminate phosphate, arsenate, and arsenite from the rest using linear discriminant analysis. This study not only provides a solution for anion discrimination using DNA as a signaling molecule but also provides insights into the interface of metal oxides and DNA.
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Affiliation(s)
- Biwu Liu
- Department of Chemistry, Waterloo Institute for Nanotechnology, University of Waterloo , Waterloo, Ontario N2L 3G1, Canada
| | - Juewen Liu
- Department of Chemistry, Waterloo Institute for Nanotechnology, University of Waterloo , Waterloo, Ontario N2L 3G1, Canada
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15
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Della Giustina G, Zambon A, Lamberti F, Elvassore N, Brusatin G. Straightforward Micropatterning of Oligonucleotides in Microfluidics by Novel Spin-On ZrO₂ Surfaces. ACS APPLIED MATERIALS & INTERFACES 2015; 7:13280-13288. [PMID: 26017394 DOI: 10.1021/acsami.5b01058] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
DNA biochip assays often require immobilization of bioactive molecules on solid surfaces. A simple biofunctionalization protocol and precise spatial binding represent the two major challenges in order to obtain localized region specific biopatterns into lab-on-a-chip (LOC) systems. In this work, a simple strategy to anchor oligonucleotides on microstructured areas and integrate the biomolecules patterns within microfluidic channels is reported. A photosensitive ZrO2 system is proposed as an advanced platform and versatile interface for specific positioning and oriented immobilization of phosphorylated DNA. ZrO2 sol-gel structures were easily produced on fused silica by direct UV lithography, allowing a simple and fast patterning process with different geometries. A thermal treatment at 800 °C was performed to crystallize the structures and maximize the affinity of DNA to ZrO2. Fluorescent DNA strands were selectively immobilized on the crystalline patterns inside polydimethylsiloxane (PDMS) microchannels, allowing high specificity and rapid hybridization kinetics. Hybridization tests confirmed the correct probe anchoring and the bioactivity retention, while denaturation experiments demonstrated the possibility of regenerating the surface.
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Affiliation(s)
- Gioia Della Giustina
- †Department of Industrial Engineering, University of Padova, Via Marzolo 9, 35131 Padova, Italy
- ‡National Interuniversity Consortium of Materials Science and Technology (INSTM), Padova Research Unit, Via Marzolo 9, 35131 Padova, Italy
| | - Alessandro Zambon
- †Department of Industrial Engineering, University of Padova, Via Marzolo 9, 35131 Padova, Italy
- §Venetian Institute of Molecular Medicine (VIMM), Via Orus 2, 35129 Padova, Italy
| | - Francesco Lamberti
- †Department of Industrial Engineering, University of Padova, Via Marzolo 9, 35131 Padova, Italy
- ‡National Interuniversity Consortium of Materials Science and Technology (INSTM), Padova Research Unit, Via Marzolo 9, 35131 Padova, Italy
- §Venetian Institute of Molecular Medicine (VIMM), Via Orus 2, 35129 Padova, Italy
| | - Nicola Elvassore
- †Department of Industrial Engineering, University of Padova, Via Marzolo 9, 35131 Padova, Italy
- ‡National Interuniversity Consortium of Materials Science and Technology (INSTM), Padova Research Unit, Via Marzolo 9, 35131 Padova, Italy
- §Venetian Institute of Molecular Medicine (VIMM), Via Orus 2, 35129 Padova, Italy
| | - Giovanna Brusatin
- †Department of Industrial Engineering, University of Padova, Via Marzolo 9, 35131 Padova, Italy
- ‡National Interuniversity Consortium of Materials Science and Technology (INSTM), Padova Research Unit, Via Marzolo 9, 35131 Padova, Italy
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Golbamaki N, Rasulev B, Cassano A, Marchese Robinson RL, Benfenati E, Leszczynski J, Cronin MTD. Genotoxicity of metal oxide nanomaterials: review of recent data and discussion of possible mechanisms. NANOSCALE 2015; 7:2154-98. [PMID: 25580680 DOI: 10.1039/c4nr06670g] [Citation(s) in RCA: 119] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Nanotechnology has rapidly entered into human society, revolutionized many areas, including technology, medicine and cosmetics. This progress is due to the many valuable and unique properties that nanomaterials possess. In turn, these properties might become an issue of concern when considering potentially uncontrolled release to the environment. The rapid development of new nanomaterials thus raises questions about their impact on the environment and human health. This review focuses on the potential of nanomaterials to cause genotoxicity and summarizes recent genotoxicity studies on metal oxide/silica nanomaterials. Though the number of genotoxicity studies on metal oxide/silica nanomaterials is still limited, this endpoint has recently received more attention for nanomaterials, and the number of related publications has increased. An analysis of these peer reviewed publications over nearly two decades shows that the test most employed to evaluate the genotoxicity of these nanomaterials is the comet assay, followed by micronucleus, Ames and chromosome aberration tests. Based on the data studied, we concluded that in the majority of the publications analysed in this review, the metal oxide (or silica) nanoparticles of the same core chemical composition did not show different genotoxicity study calls (i.e. positive or negative) in the same test, although some results are inconsistent and need to be confirmed by additional experiments. Where the results are conflicting, it may be due to the following reasons: (1) variation in size of the nanoparticles; (2) variations in size distribution; (3) various purities of nanomaterials; (4) variation in surface areas for nanomaterials with the same average size; (5) differences in coatings; (6) differences in crystal structures of the same types of nanomaterials; (7) differences in size of aggregates in solution/media; (8) differences in assays; (9) different concentrations of nanomaterials in assay tests. Indeed, due to the observed inconsistencies in the recent literature and the lack of adherence to appropriate, standardized test methods, reliable genotoxicity assessment of nanomaterials is still challenging.
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Affiliation(s)
- Nazanin Golbamaki
- Laboratory of Environmental Chemistry and Toxicology at the Istituto di Ricerche Farmacologiche Mario Negri, Milan, Italy.
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Liu B, Liu J. DNA adsorption by indium tin oxide nanoparticles. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2014; 31:371-377. [PMID: 25521602 DOI: 10.1021/la503917j] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
The high conductivity and optical transparency of indium tin oxide (ITO) has made it a popular material in the electronic industry. Recently, its application in biosensors is also explored. To understand its biointerface chemistry, we herein investigate its interaction with fluorescently labeled single-stranded oligonucleotides using ITO nanoparticles (NPs). The fluorescence of DNA is efficiently quenched after adsorption, and the interaction between DNA and ITO NPs is strongly dependent on the surface charge of ITO. At low pH, the ITO surface is positively charged to afford a high DNA adsorption capacity. Adsorption is also influenced by the sequence and length of DNA. For its components, In2O3 adsorbs DNA more strongly while SnO2 repels DNA at neutral pH. The DNA adsorption property of ITO is an averaging result from both components. DNA adsorption is confirmed to be mainly by the phosphate backbone via displacement experiments using free phosphate or DNA bases. Last, DNA-induced DNA desorption by forming duplex DNA is demonstrated on ITO, while the same reaction is more difficult to achieve on other metal oxides including CeO2, TiO2, and Fe3O4 because these particles adsorb DNA more tightly.
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Affiliation(s)
- Biwu Liu
- Department of Chemistry, Waterloo Institute for Nanotechnology, University of Waterloo , Waterloo, Ontario N2L 3G1, Canada
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Larkin J, Henley R, Bell DC, Cohen-Karni T, Rosenstein JK, Wanunu M. Slow DNA transport through nanopores in hafnium oxide membranes. ACS NANO 2013; 7:10121-10128. [PMID: 24083444 PMCID: PMC4729694 DOI: 10.1021/nn404326f] [Citation(s) in RCA: 139] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
We present a study of double- and single-stranded DNA transport through nanopores fabricated in ultrathin (2-7 nm thick) freestanding hafnium oxide (HfO2) membranes. The high chemical stability of ultrathin HfO2 enables long-lived experiments with <2 nm diameter pores that last several hours, in which we observe >50 000 DNA translocations with no detectable pore expansion. Mean DNA velocities are slower than velocities through comparable silicon nitride pores, providing evidence that HfO2 nanopores have favorable physicochemical interactions with nucleic acids that can be leveraged to slow down DNA in a nanopore.
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Affiliation(s)
- Joseph Larkin
- Departments of Physics and Chemistry/Chemical Biology, Northeastern University, Boston, Massachusetts 02115, United States
| | - Robert Henley
- Departments of Physics and Chemistry/Chemical Biology, Northeastern University, Boston, Massachusetts 02115, United States
| | - David C. Bell
- School of Engineering and Applied Sciences, Harvard University, Cambridge, Massachusetts 02138, United States
| | - Tzahi Cohen-Karni
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Jacob K. Rosenstein
- School of Engineering, Brown University, Providence, Rhode Island 02912, United States
| | - Meni Wanunu
- Departments of Physics and Chemistry/Chemical Biology, Northeastern University, Boston, Massachusetts 02115, United States
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De A, Souchelnytskyi S, van den Berg A, Carlen ET. Peptide nucleic acid (PNA)-DNA duplexes: comparison of hybridization affinity between vertically and horizontally tethered PNA probes. ACS APPLIED MATERIALS & INTERFACES 2013; 5:4607-4612. [PMID: 23668364 DOI: 10.1021/am4011429] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
We compare the PNA-DNA duplex hybridization characteristics of vertically tethered and new horizontally tethered PNA probes on solid surfaces. The horizontal 15-mer PNA probe has been synthesized with linker molecules attached at three locations (γ-points) positioned along the PNA backbone that provides covalent attachment of the probe with the backbone aligned parallel to the surface, which is important for DNA hybridization assays that use electric field effect sensors for detection. A radioactive labeled assay and real-time surface plasmon resonance (SPR) biosensor are used to assess the probe surface density, nonspecific binding, and DNA hybridization affinity, respectively, of the new PNA probe configuration. The estimated equilibrium dissociation constants of the horizontally tethered duplex and the vertically tethered duplex are of the same order of magnitude (KD ≈ 5 nM), which indicates a sufficient hybridization affinity for many electronic biosensors that benefit from the horizontal alignment, which minimizes the effects of counterion screening.
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