1
|
McGinnity TL, Sokolova V, Prymak O, Nallathamby PD, Epple M, Roeder RK. Colloidal stability, cytotoxicity, and cellular uptake of HfO 2 nanoparticles. J Biomed Mater Res B Appl Biomater 2021; 109:1407-1417. [PMID: 33474824 DOI: 10.1002/jbm.b.34800] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2020] [Revised: 12/16/2020] [Accepted: 01/09/2021] [Indexed: 12/23/2022]
Abstract
The colloidal stability, cytotoxicity, and cellular uptake of hafnium oxide (HfO2 ) nanoparticles (NPs) were investigated in vitro to assess safety and efficacy for use as a deliverable theranostic in nanomedicine. Monoclinic HfO2 NPs, ~60-90 nm in diameter and ellipsoidal in shape, were directly prepared without calcination by a hydrothermal synthesis at 83% yield. The as-prepared, bare HfO2 NPs exhibited colloidal stability in cell culture media for at least 10 days without significant agglomeration or settling. The viability (live/dead assay) of human epithelial cells (HeLa) and monocyte-derived macrophages (THP-1) did not fall below 95% of untreated cells after up to 24 h exposure to HfO2 NPs at concentrations up to 0.80 mg/ml. Similarly, the mitochondrial activity (MTT assay) of HeLa and THP-1 cells did not fall below 80% of untreated cells after up to 24 h exposure to HfO2 NPs at concentrations up to 0.40 mg/ml. Cellular uptake was confirmed and visualized in both HeLa and THP-1 cells by fluorescence microscopy of HfO2 NPs labeled with Cy5 and transmission electron microscopy (TEM) of bare HfO2 NPs. TEM micrographs provided direct observation of macropinocytosis and endosomal compartmentalization within 4 h of exposure. Thus, the HfO2 NPs in this study exhibited colloidal stability, cytocompatibility, and cellular uptake for potential use as a deliverable theranostic in nanomedicine.
Collapse
Affiliation(s)
- Tracie L McGinnity
- Department of Aerospace and Mechanical Engineering, Bioengineering Graduate Program, University of Notre Dame, Notre Dame, Indiana, USA.,Harper Cancer Research Institute, University of Notre Dame, Notre Dame, Indiana, USA
| | - Viktoriya Sokolova
- Inorganic Chemistry and Center for Nanointegration Duisburg-Essen (CeNIDE), University of Duisburg-Essen, Essen, Germany
| | - Oleg Prymak
- Inorganic Chemistry and Center for Nanointegration Duisburg-Essen (CeNIDE), University of Duisburg-Essen, Essen, Germany
| | - Prakash D Nallathamby
- Department of Aerospace and Mechanical Engineering, Bioengineering Graduate Program, University of Notre Dame, Notre Dame, Indiana, USA.,Harper Cancer Research Institute, University of Notre Dame, Notre Dame, Indiana, USA
| | - Matthias Epple
- Inorganic Chemistry and Center for Nanointegration Duisburg-Essen (CeNIDE), University of Duisburg-Essen, Essen, Germany
| | - Ryan K Roeder
- Department of Aerospace and Mechanical Engineering, Bioengineering Graduate Program, University of Notre Dame, Notre Dame, Indiana, USA.,Harper Cancer Research Institute, University of Notre Dame, Notre Dame, Indiana, USA
| |
Collapse
|
2
|
McGinnity TL, Dominguez O, Curtis TE, Nallathamby PD, Hoffman AJ, Roeder RK. Hafnia (HfO2) nanoparticles as an X-ray contrast agent and mid-infrared biosensor. Nanoscale 2016; 8:13627-37. [PMID: 27364973 DOI: 10.1039/c6nr03217f] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
The interaction of hafnium oxide (HfO2) nanoparticles (NPs) with X-ray and mid-infrared radiation was investigated to assess the potential as a multifunctional diagnostic probe for X-ray computed tomography (CT) and/or mid-infrared biosensing. HfO2 NPs of controlled size were prepared by a sol-gel process and surface functionalized with polyvinylpyrrolidone, resulting in relatively spherical and monodispersed NPs with a tunable mean diameter in the range of ∼7-31 nm. The X-ray attenuation of HfO2 NPs was measured over 0.5-50 mM concentration and compared with Au NPs and iodine, which are the most prominent X-ray contrast agents currently used in research and clinical diagnostic imaging, respectively. At clinical CT tube potentials >80 kVp, HfO2 NPs exhibited superior or similar X-ray contrast compared to Au NPs, while both exhibited significantly greater X-ray contrast compared to iodine, due to the favorable location of the k-shell absorption edge for hafnium and gold. Moreover, energy-dependent differences in X-ray attenuation enabled simultaneous quantitative molecular imaging of each agent using photon-counting spectral (multi-energy) CT. HfO2 NPs also exhibited a strong mid-infrared absorption in the Reststrahlen band from ∼250-800 cm(-1) and negative permittivity below 695 cm(-1), which can enable development of mid-infrared biosensors and contrast agents, leveraging surface enhanced mid-infrared and/or phonon polariton absorption.
Collapse
Affiliation(s)
- Tracie L McGinnity
- Department of Aerospace and Mechanical Engineering, Bioengineering Graduate Program, University of Notre Dame, Notre Dame, IN 46556, USA. and Harper Cancer Research Institute, University of Notre Dame, Notre Dame, IN 46556, USA
| | - Owen Dominguez
- Department of Electrical Engineering, University of Notre Dame, Notre Dame, IN 46556, USA and Notre Dame Center for Nanoscience and Nanotechnology (NDnano), University of Notre Dame, Notre Dame, IN 46556, USA
| | - Tyler E Curtis
- Department of Aerospace and Mechanical Engineering, Bioengineering Graduate Program, University of Notre Dame, Notre Dame, IN 46556, USA.
| | - Prakash D Nallathamby
- Department of Aerospace and Mechanical Engineering, Bioengineering Graduate Program, University of Notre Dame, Notre Dame, IN 46556, USA. and Harper Cancer Research Institute, University of Notre Dame, Notre Dame, IN 46556, USA
| | - Anthony J Hoffman
- Department of Electrical Engineering, University of Notre Dame, Notre Dame, IN 46556, USA and Notre Dame Center for Nanoscience and Nanotechnology (NDnano), University of Notre Dame, Notre Dame, IN 46556, USA
| | - Ryan K Roeder
- Department of Aerospace and Mechanical Engineering, Bioengineering Graduate Program, University of Notre Dame, Notre Dame, IN 46556, USA. and Department of Electrical Engineering, University of Notre Dame, Notre Dame, IN 46556, USA and Harper Cancer Research Institute, University of Notre Dame, Notre Dame, IN 46556, USA and Notre Dame Center for Nanoscience and Nanotechnology (NDnano), University of Notre Dame, Notre Dame, IN 46556, USA
| |
Collapse
|
3
|
Nallathamby PD, Hopf J, Irimata LE, McGinnity TL, Roeder RK. Preparation of fluorescent Au–SiO2 core–shell nanoparticles and nanorods with tunable silica shell thickness and surface modification for immunotargeting. J Mater Chem B 2016; 4:5418-5428. [DOI: 10.1039/c6tb01659f] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Scalable methods for preparing and modifying Au–SiO2 core–shell nanoparticles provide a platform for engineering size-dependent multifunctional properties for in vivo biomedical applications.
Collapse
Affiliation(s)
- Prakash D. Nallathamby
- Department of Aerospace and Mechanical Engineering
- Bioengineering Graduate Program
- University of Notre Dame
- Notre Dame
- USA
| | - Juliane Hopf
- Environmental Sciences Division
- Oak Ridge National Laboratory
- Oak Ridge
- USA
| | - Lisa E. Irimata
- Department of Aerospace and Mechanical Engineering
- Bioengineering Graduate Program
- University of Notre Dame
- Notre Dame
- USA
| | - Tracie L. McGinnity
- Department of Aerospace and Mechanical Engineering
- Bioengineering Graduate Program
- University of Notre Dame
- Notre Dame
- USA
| | - Ryan K. Roeder
- Department of Aerospace and Mechanical Engineering
- Bioengineering Graduate Program
- University of Notre Dame
- Notre Dame
- USA
| |
Collapse
|