1
|
Markhulia J, Kekutia S, Mikelashvili V, Saneblidze L, Tsertsvadze T, Maisuradze N, Leladze N, Czigány Z, Almásy L. Synthesis, Characterization, and In Vitro Cytotoxicity Evaluation of Doxorubicin-Loaded Magnetite Nanoparticles on Triple-Negative Breast Cancer Cell Lines. Pharmaceutics 2023; 15:1758. [PMID: 37376206 DOI: 10.3390/pharmaceutics15061758] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2023] [Revised: 06/13/2023] [Accepted: 06/14/2023] [Indexed: 06/29/2023] Open
Abstract
In this study, we investigated the cytotoxicity of doxorubicin (DOX)-loaded magnetic nanofluids on 4T1 mouse tumor epithelial cells and MDA-MB-468 human triple-negative breast cancer (TNBC) cells. Superparamagnetic iron oxide nanoparticles were synthesized using sonochemical coprecipitation by applying electrohydraulic discharge treatment (EHD) in an automated chemical reactor, modified with citric acid and loaded with DOX. The resulting magnetic nanofluids exhibited strong magnetic properties and maintained sedimentation stability in physiological pH conditions. The obtained samples were characterized using X-ray diffraction (XRD), transmission electron microscopy (TEM), Fourier-transform infrared spectroscopy, UV-spectrophotometry, dynamic light scattering (DLS), electrophoretic light scattering (ELS), vibrating sample magnetometry (VSM), and transmission electron microscopy (TEM). In vitro studies using the MTT method revealed a synergistic effect of the DOX-loaded citric-acid-modified magnetic nanoparticles on the inhibition of cancer cell growth and proliferation compared to treatment with pure DOX. The combination of the drug and magnetic nanosystem showed promising potential for targeted drug delivery, with the possibility of optimizing the dosage to reduce side-effects and enhance the cytotoxic effect on cancer cells. The nanoparticles' cytotoxic effects were attributed to the generation of reactive oxygen species and the enhancement of DOX-induced apoptosis. The findings suggest a novel approach for enhancing the therapeutic efficacy of anticancer drugs and reducing their associated side-effects. Overall, the results demonstrate the potential of DOX-loaded citric-acid-modified magnetic nanoparticles as a promising strategy in tumor therapy, and provide insights into their synergistic effects.
Collapse
Affiliation(s)
- Jano Markhulia
- Nanocomposites Laboratory, Vladimer Chavchanidze Institute of Cybernetics of the Georgian Technical University, Z. Anjafaridze Str. 5, 0186 Tbilisi, Georgia
| | - Shalva Kekutia
- Nanocomposites Laboratory, Vladimer Chavchanidze Institute of Cybernetics of the Georgian Technical University, Z. Anjafaridze Str. 5, 0186 Tbilisi, Georgia
| | - Vladimer Mikelashvili
- Nanocomposites Laboratory, Vladimer Chavchanidze Institute of Cybernetics of the Georgian Technical University, Z. Anjafaridze Str. 5, 0186 Tbilisi, Georgia
| | - Liana Saneblidze
- Nanocomposites Laboratory, Vladimer Chavchanidze Institute of Cybernetics of the Georgian Technical University, Z. Anjafaridze Str. 5, 0186 Tbilisi, Georgia
| | - Tamar Tsertsvadze
- Department of Biology Chair of Immunology and Microbiology, Faculty of Exact and Natural Sciences, Ivane Javakhishvili Tbilisi State University, 1, Ilia Tchavchavadze Ave., 0179 Tbilisi, Georgia
| | - Nino Maisuradze
- Nanocomposites Laboratory, Vladimer Chavchanidze Institute of Cybernetics of the Georgian Technical University, Z. Anjafaridze Str. 5, 0186 Tbilisi, Georgia
- Department of Biology Chair of Immunology and Microbiology, Faculty of Exact and Natural Sciences, Ivane Javakhishvili Tbilisi State University, 1, Ilia Tchavchavadze Ave., 0179 Tbilisi, Georgia
| | - Nino Leladze
- Department of Biology Chair of Immunology and Microbiology, Faculty of Exact and Natural Sciences, Ivane Javakhishvili Tbilisi State University, 1, Ilia Tchavchavadze Ave., 0179 Tbilisi, Georgia
| | - Zsolt Czigány
- Institute for Technical Physics and Materials Science, Centre for Energy Research, Konkoly Thege Miklós Str. 29-33, 1121 Budapest, Hungary
| | - László Almásy
- Institute for Energy Security and Environmental Safety, Centre for Energy Research, Konkoly Thege Miklós Str. 29-33, 1121 Budapest, Hungary
| |
Collapse
|
2
|
Dmochowska N, Milanova V, Mukkamala R, Chow KK, Pham NTH, Srinivasarao M, Ebert LM, Stait-Gardner T, Le H, Shetty A, Nelson M, Low PS, Thierry B. Nanoparticles Targeted to Fibroblast Activation Protein Outperform PSMA for MRI Delineation of Primary Prostate Tumors. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023; 19:e2204956. [PMID: 36840671 DOI: 10.1002/smll.202204956] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/12/2022] [Revised: 01/23/2023] [Indexed: 05/25/2023]
Abstract
Accurate delineation of gross tumor volumes remains a barrier to radiotherapy dose escalation and boost dosing in the treatment of solid tumors, such as prostate cancer. Magnetic resonance imaging (MRI) of tumor targets has the power to enable focal dose boosting, particularly when combined with technological advances such as MRI-linear accelerator. Fibroblast activation protein (FAP) is overexpressed in stromal components of >90% of epithelial carcinomas. Herein, the authors compare targeted MRI of prostate specific membrane antigen (PSMA) with FAP in the delineation of orthotopic prostate tumors. Control, FAP, and PSMA-targeting iron oxide nanoparticles were prepared with modification of a lymphotropic MRI agent (FerroTrace, Ferronova). Mice with orthotopic LNCaP tumors underwent MRI 24 h after intravenous injection of nanoparticles. FAP and PSMA nanoparticles produced contrast enhancement on MRI when compared to control nanoparticles. FAP-targeted MRI increased the proportion of tumor contrast-enhancing black pixels by 13%, compared to PSMA. Analysis of changes in R2 values between healthy prostates and LNCaP tumors indicated an increase in contrast-enhancing pixels in the tumor border of 15% when targeting FAP, compared to PSMA. This study demonstrates the preclinical feasibility of PSMA and FAP-targeted MRI which can enable targeted image-guided focal therapy of localized prostate cancer.
Collapse
Affiliation(s)
- Nicole Dmochowska
- Future Industries Institute, University of South Australia, Adelaide, South Australia, 5095, Australia
| | - Valentina Milanova
- Future Industries Institute, University of South Australia, Adelaide, South Australia, 5095, Australia
| | - Ramesh Mukkamala
- Department of Chemistry and Institute for Drug Discovery, Purdue University, West Lafayette, IN, 47907, USA
| | - Kwok Keung Chow
- Future Industries Institute, University of South Australia, Adelaide, South Australia, 5095, Australia
| | - Nguyen T H Pham
- Key Centre for Polymers and Colloids, School of Chemistry, The University of Sydney, Sydney, New South Wales, 2006, Australia
| | - Madduri Srinivasarao
- Department of Chemistry and Institute for Drug Discovery, Purdue University, West Lafayette, IN, 47907, USA
| | - Lisa M Ebert
- Centre for Cancer Biology, University of South Australia; SA Pathology; Cancer Clinical Trials Unit, Royal Adelaide Hospital; Adelaide Medical School, University of Adelaide, Adelaide, South Australia, 5000, Australia
| | - Timothy Stait-Gardner
- Nanoscale Organisation and Dynamics Group, Western Sydney University, Sydney, New South Wales, 2560, Australia
| | - Hien Le
- Department of Radiation Oncology, Royal Adelaide Hospital, Adelaide, South Australia, 5000, Australia
| | - Anil Shetty
- Ferronova Pty Ltd, Mawson Lakes, South Australia, 5095, Australia
| | - Melanie Nelson
- Ferronova Pty Ltd, Mawson Lakes, South Australia, 5095, Australia
| | - Philip S Low
- Department of Chemistry and Institute for Drug Discovery, Purdue University, West Lafayette, IN, 47907, USA
| | - Benjamin Thierry
- Future Industries Institute, University of South Australia, Adelaide, South Australia, 5095, Australia
| |
Collapse
|
3
|
Pham QN, Winter M, Milanova V, Young C, Condina MR, Hoffmann P, Pham NTH, Tung TT, Losic D, Thierry B. Magnetic enrichment of immuno-specific extracellular vesicles for mass spectrometry using biofilm-derived iron oxide nanowires. NANOSCALE 2023; 15:1236-1247. [PMID: 36541661 DOI: 10.1039/d2nr05619d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Immuno-specific enrichment of extracellular vesicles (EVs) can provide important information into cellular pathways underpinning various pathologies and for non-invasive diagnostics, including mass spectrometry-based analyses. Herein, we report an optimised protocol for immuno-magnetic enrichment of specific EV subtypes and their subsequent processing with liquid chromatography-tandem mass spectrometry (LC-MS/MS). Specifically, we conjugated placental alkaline phosphatase (PLAP) antibodies to magnetic iron oxide nanowires (NWs) derived from bacterial biofilms and demonstrated the utility of this approach by enriching placenta-specific EVs (containing PLAP) from cell culture media. We demonstrate efficient PLAP+ve EV enrichment for both NW-PLAP and Dynabeads™-PLAP, with high PLAP protein recovery (83.7 ± 8.9% and 83.2 ± 5.9%, respectively), high particle-to-protein ratio (7.5 ± 0.7 × 109 and 7.1 ± 1.2 × 109, respectively), and low non-specific binding of non-target EVs (7 ± 3.2% and 5.4 ± 2.2%, respectively). Furthermore, our optimized EV enrichment and processing approach identified 2518 and 2545 protein groups with LC-MS/MS for NW-PLAP and Dynabead™-PLAP, respectively, with excellent reproducibility (Pearson correlation 0.986 and 0.988). These findings demonstrate that naturally occurring iron oxide NWs have comparable performance to current gold standard immune-magnetic beads. The optimized immuno-specific EV enrichment for LC-MS/MS method provides a low-cost and highly-scalable yet efficient, high-throughput approach for quality EV proteomic studies.
Collapse
Affiliation(s)
- Quang Nghia Pham
- Future Industries Institute, University of South Australia, Mawson Lakes Campus, Mawson Lakes, Adelaide, South Australia 5095, Australia.
| | - Marnie Winter
- Future Industries Institute, University of South Australia, Mawson Lakes Campus, Mawson Lakes, Adelaide, South Australia 5095, Australia.
| | - Valentina Milanova
- Future Industries Institute, University of South Australia, Mawson Lakes Campus, Mawson Lakes, Adelaide, South Australia 5095, Australia.
| | - Clifford Young
- Clinical and Health Sciences, University of South Australia, City West Campus, Adelaide, South Australia 5000, Australia
| | - Mark R Condina
- Future Industries Institute, University of South Australia, Mawson Lakes Campus, Mawson Lakes, Adelaide, South Australia 5095, Australia.
| | - Peter Hoffmann
- Clinical and Health Sciences, University of South Australia, City West Campus, Adelaide, South Australia 5000, Australia
| | - Nguyen T H Pham
- School of Chemistry, The University of Sydney, Sydney, New South Wales 2006, Australia
| | - Tran Thanh Tung
- School of Chemical Engineering and Advanced Materials, The University of Adelaide, Adelaide, South Australia 5005, Australia
| | - Dusan Losic
- School of Chemical Engineering and Advanced Materials, The University of Adelaide, Adelaide, South Australia 5005, Australia
| | - Benjamin Thierry
- Future Industries Institute, University of South Australia, Mawson Lakes Campus, Mawson Lakes, Adelaide, South Australia 5095, Australia.
| |
Collapse
|
4
|
Levina A, Chetcuti ARM, Lay PA. Controversial Role of Transferrin in the Transport of Ruthenium Anticancer Drugs. Biomolecules 2022; 12:biom12091319. [PMID: 36139158 PMCID: PMC9496346 DOI: 10.3390/biom12091319] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2022] [Revised: 09/12/2022] [Accepted: 09/13/2022] [Indexed: 11/16/2022] Open
Abstract
Ruthenium complexes are at the forefront of developments in metal-based anticancer drugs, but many questions remain open regarding their reactivity in biological media, including the role of transferrin (Tf) in their transport and cellular uptake. A well-known anticancer drug, KP1019 ((IndH)[RuIIICl4(Ind)2], where Ind = indazole) and a reference complex, [RuIII(nta)2]3- (nta = nitrilotriacetato(3-)) interacted differently with human apoTf, monoFeTf, or Fe2Tf. These reactions were studied by biolayer interferometry (BLI) measurements of Ru-Fe-Tf binding to recombinant human transferrin receptor 1 (TfR1) in conjunction with UV-vis spectroscopy and particle size analysis. Cellular Ru uptake in human hepatoma (HepG2) cells was measured under the conditions of the BLI assays. The mode of Tf binding and cellular Ru uptake were critically dependent on the nature of Ru complex, availability of Fe(III) binding sites of Tf, and the presence of proteins that competed for metal binding, particularly serum albumin. Cellular uptake of KP1019 was not Tf-mediated and occurred mostly by passive diffusion, which may also be suitable for treatments of inoperable cancers by intratumoral injections. High cellular Ru uptake from a combination of [RuIII(nta)2]3- and Fe2Tf in the absence of significant Ru-Tf binding was likely to be due to trapping of Ru(III) species into the endosome during TfR1-mediated endocytosis of Fe2Tf.
Collapse
Affiliation(s)
- Aviva Levina
- School of Chemistry, The University of Sydney, Sydney, NSW 2006, Australia
- Correspondence: (A.L.); (P.A.L.)
| | | | - Peter A. Lay
- School of Chemistry, The University of Sydney, Sydney, NSW 2006, Australia
- School of Sydney Analytical, The University of Sydney, Sydney, NSW 2006, Australia
- Correspondence: (A.L.); (P.A.L.)
| |
Collapse
|
5
|
Krishnan G, Cousins A, Pham N, Milanova V, Nelson M, Krishnan S, Shetty A, van den Berg N, Rosenthal E, Krishnan S, Wormald PJ, Foreman A, Thierry B. Preclinical evaluation of a mannose-labeled magnetic tracer for enhanced sentinel lymph node retention in the head and neck. NANOMEDICINE : NANOTECHNOLOGY, BIOLOGY, AND MEDICINE 2022; 42:102546. [PMID: 35278683 DOI: 10.1016/j.nano.2022.102546] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/07/2022] [Revised: 02/25/2022] [Accepted: 03/01/2022] [Indexed: 05/26/2023]
Abstract
Sentinel lymph node biopsy in cancers of the head and neck offers demonstrated clinical and diagnostic value, but adoption is limited by concerns about the detrimental consequence to survival of false negative results in a highly curable setting. The aim of this study was to demonstrate potential to overcome this via application of a novel mannose-labeled magnetic iron oxide tracer. In a large animal model, preoperative imaging and intraoperative magnetometer detection were used to identify magnetic lymph nodes. Iron quantification mapped the distribution of tracer within lymphatic levels. Over a 4-week test period, uptake of magnetic tracer in lymph nodes increased in a linear-like fashion, with a substantial percentage of accumulated iron (83%) being retained in the sentinel node. This result indicates a high affinity of mannose-labeled particles to the sentinel node, while providing a means for the magnetometer probe to indicate node status based on intraoperative signal.
Collapse
Affiliation(s)
- Giri Krishnan
- The Department of Otolaryngology, Head and Neck Surgery, The University of Adelaide, Adelaide, SA, Australia
| | - Aidan Cousins
- Future Industries Institute, University of South Australia, Mawson Lakes, SA, Australia.
| | - Nguyen Pham
- School of Chemistry, University of New South Wales, Sydney, NSW, Australia
| | - Valentina Milanova
- Future Industries Institute, University of South Australia, Mawson Lakes, SA, Australia
| | | | - Shridhar Krishnan
- The Department of Otolaryngology, Head and Neck Surgery, The University of Adelaide, Adelaide, SA, Australia
| | - Anil Shetty
- Ferronova Pty Ltd., Mawson Lakes, SA, Australia
| | - Nynke van den Berg
- Department of Otolaryngology-Head and Neck Surgery, School of Medicine, Stanford University, Stanford, CA, USA
| | - Eben Rosenthal
- Department of Otolaryngology-Head and Neck Surgery, School of Medicine, Stanford University, Stanford, CA, USA
| | - Suren Krishnan
- The Department of Otolaryngology, Head and Neck Surgery, The University of Adelaide, Adelaide, SA, Australia
| | - Peter-John Wormald
- The Department of Otolaryngology, Head and Neck Surgery, The University of Adelaide, Adelaide, SA, Australia
| | - Andrew Foreman
- The Department of Otolaryngology, Head and Neck Surgery, The University of Adelaide, Adelaide, SA, Australia
| | - Benjamin Thierry
- Future Industries Institute, University of South Australia, Mawson Lakes, SA, Australia.
| |
Collapse
|
6
|
Gafchromic™ EBT3 Film Measurements of Dose Enhancement Effects by Metallic Nanoparticles for 192Ir Brachytherapy, Proton, Photon and Electron Radiotherapy. RADIATION 2022. [DOI: 10.3390/radiation2010010] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
Interest in combining metallic nanoparticles, such as iron (SPIONs), gold (AuNPs) and bismuth oxide (BiONPs), with radiotherapy has increased due to the promising therapeutic advantages. While the underlying physical mechanisms of NP-enhanced radiotherapy have been extensively explored, only a few research works were motivated to quantify its contribution in an experimental dosimetry setting. This work aims to explore the feasibility of radiochromic films to measure the physical dose enhancement (DE) caused by the release of secondary electrons and photons during NP–radiotherapy interactions. A 10 mM each of SPIONs, AuNPs or BiONPs was loaded into zipper bags packed with GAFCHROMIC™ EBT3 films. The samples were exposed to a single radiation dose of 4.0 Gy with clinically relevant beams. Scanning was conducted using a flatbed scanner in red-component analysis for optimum sensitivity. Experimental dose enhancement factors (DEFExperimental) were then calculated using the ratio of absorbed doses (with/without NPs) converted from the films’ calibration curves. DEFExperimental for all NPs showed no significant physical DE beyond the uncertainty limits (p > 0.05). These results suggest that SPIONs, AuNPs and BiONPs might potentially enhance the dose in these clinical beams. However, changes in NPs concentration, as well as dosimeter sensitivity, are important to produce observable impact.
Collapse
|
7
|
Raviraj V, Pham BTT, Kim BJ, Pham NTH, Kok LF, Painter N, Delic NC, Jones SK, Hawkett BS, Lyons JG. Non-invasive transdermal delivery of chemotherapeutic molecules in vivo using superparamagnetic iron oxide nanoparticles. Cancer Nanotechnol 2021. [DOI: 10.1186/s12645-021-00079-7] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Abstract
Background
The skin is both a target and a potential conduit for the delivery of drugs, but its cornified cell layer resists penetration by most molecules. This study investigated the potential of superparamagnetic iron oxide nanoparticles to facilitate the transdermal delivery of anticancer agents.
Results
Chemotherapeutic cancer drugs were applied with or without nanoparticles to the skin of hairless mice, and their ability to penetrate the skin was assessed using fluorescence microscopy and tumor growth. Nanoparticles enhanced the penetration of the skin by doxorubicin and 5-fluorouracil as determined by fluorescence microscopy and growth retardation of experimental melanoma in immunocompetent, syngeneic mice. This drug enhancement did not require conjugation or encapsulation of the drugs by the nanoparticles—simple co-administration sufficed. Nanoparticles applied topically to melanomas increased the cytotoxicity and immune cell infiltration induced by co-administered 5-fluorouracil, and also reduced vascularization of the tumors independently of 5-fluorouracil.
Conclusion
Correctly formulated superparamagnetic iron oxide nanoparticles can facilitate the chemotherapeutic effectiveness of cytotoxic drugs on skin tumors by both increasing their transdermal penetration and ameliorating host–tumor interactions. This enhancement of skin penetration occurs without the need for conjugation or encapsulation of the co-administered drugs, and so will likely be applicable to other drugs, also.
Collapse
|
8
|
Śmiłowicz D, Slootweg JC, Metzler-Nolte N. Bioconjugation of Cyclometalated Gold(III) Lipoic Acid Fragments to Linear and Cyclic Breast Cancer Targeting Peptides. Mol Pharm 2019; 16:4572-4581. [PMID: 31596097 DOI: 10.1021/acs.molpharmaceut.9b00695] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Cell-targeting peptides (CTPs) are increasingly used in the field of cancer research due to their high affinity and specificity to cell or tissue targets. In the search for novel metal-based drug candidates, our research group is particularly focused on bioconjugates by utilizing peptides to increase the selectivity of cytotoxic organometallic compounds. Motivated by the relatively high cytotoxic activity of gold complexes, such as Auranofin (approved to treat rheumatoid arthritis), for the treatment of various diseases, we anticipated that gold peptide bioconjugates would present interesting candidates for novel breast cancer therapies. For this, we investigate the use of the natural compound lipoic acid (Lpa) as a bioconjugation handle to link Au complexes in the oxidation state +III to peptides using the dithiol moiety. Using this strategy, we have synthesized Au(III) complex bioconjugates linked to the linear LTVSPWY peptide and two cyclic DfKRG and KTTHWGFTLG tumor-targeting peptides. Solid-phase peptide synthesis (SPPS) was used to prepare the peptides, with lipoic acid introduced N-terminally as a conjugation handle. After peptide cleavage, the metal complex was introduced in solution by first reducing the internal disulfide bond, followed by reaction with Au(ppy)Cl2 (1, ppy: 2-phenyl-pyridine), to yield the Au(III)-Lpa-peptide bioconjugates. The new bioconjugates were successfully synthesized, purified by semi-preparative HPLC, and characterized by ESI-MS. Au(III)-peptide bioconjugates were tested as cytotoxic agents against two different human breast cancer cell lines (MCF-7 and MDA-MB-231) and normal human fibroblasts cells (GM5657T) and compared to cisplatin, the parent Au(III) dichloride complex, and metal-free peptides. These in vitro data show that the Au(III)-peptide bioconjugate 5, possessing the cyclic integrin-targeting RGD-derived peptide sequence in the structure, exhibits improved activity compared to the parent gold(III) compound Au(ppy)Cl2 (1) as well as to cisplatin or the metal-free peptide. Moreover, the excellent targeting properties of 5 are supported by the fact that a Au(III)-peptide conjugate with the exact same peptide sequence, but a linear rather than the cyclic form of 5 exhibits 10 times lower cytotoxic activity.
Collapse
Affiliation(s)
- Dariusz Śmiłowicz
- Inorganic Chemistry I-Bioinorganic Chemistry , Ruhr-University Bochum , Universitätsstraße 150 , Bochum 44801 , Germany
| | - Jack C Slootweg
- Inorganic Chemistry I-Bioinorganic Chemistry , Ruhr-University Bochum , Universitätsstraße 150 , Bochum 44801 , Germany
| | - Nils Metzler-Nolte
- Inorganic Chemistry I-Bioinorganic Chemistry , Ruhr-University Bochum , Universitätsstraße 150 , Bochum 44801 , Germany
| |
Collapse
|
9
|
Abdul Rashid R, Zainal Abidin S, Khairil Anuar MA, Tominaga T, Akasaka H, Sasaki R, Kie K, Abdul Razak K, Pham BT, Hawkett BS, Carmichael MA, Geso M, Rahman WN. Radiosensitization effects and ROS generation by high Z metallic nanoparticles on human colon carcinoma cell (HCT116) irradiated under 150 MeV proton beam. OPENNANO 2019. [DOI: 10.1016/j.onano.2018.100027] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
|
10
|
Priyananda P, Sabouri H, Jain N, Hawkett BS. Steric Stabilization of γ-Fe 2O 3 Superparamagnetic Nanoparticles in a Hydrophobic Ionic Liquid and the Magnetorheological Behavior of the Ferrofluid. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:3068-3075. [PMID: 29420049 DOI: 10.1021/acs.langmuir.7b04291] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
Hydrophobic ionic liquid ferrofluids (ILFFs) are studied for use in electrospray thrusters for microsatellite propulsion under nonatmospheric and in high-temperature environments. We synthesized a hydrophobic ILFF by dispersing sterically stabilized γ-Fe2O3 nanoparticles (NPs) in the ionic liquid 1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide. A diblock copolymer, C4-RAFT-AA10-DEAm60, was synthesized to facilitate multipoint bidentate anchoring to the NP through the acrylic acid block. The DEAm60 layer was incorporated to generate steric repulsion between particles to protect against the aggregation of magnetized particles arising from dipole-dipole attraction. The effect of shearing and variation in the magnetic field strength on the steric repulsion was examined using the DLVO theory. The effect of varying the magnetic field strength and particle concentration on the viscoelastic properties of the ferrofluid was evaluated using rheometry. The viscosity of the ferrofluid increased with the magnetic field strength, indicating that the magnetized particles assembled into a structure. The level of straining required to break down the structure formed by the magnetized particles increased with the magnetic field strength and particle concentration. The absence of particle interlocking during shearing was indicated by the smooth viscosity versus shear rate traces. The DLVO analysis showed that increasing the magnetic attraction between the particles causes the DEAm60 brush layers on the particles to overlap more, resulting in an increase in the steric repulsion. As overlapping increases, osmotic repulsion is caused before progressing to a strong elastic repulsion. The effect of the polymer solubility and particle interaction due to hydrodynamic forces on the steric repulsion was also analyzed.
Collapse
Affiliation(s)
| | - Hadi Sabouri
- University of Sydney , Camperdown , New South Wales 2006 , Australia
| | - Nirmesh Jain
- University of Sydney , Camperdown , New South Wales 2006 , Australia
| | - Brian S Hawkett
- University of Sydney , Camperdown , New South Wales 2006 , Australia
| |
Collapse
|
11
|
Pham BTT, Colvin EK, Pham NTH, Kim BJ, Fuller ES, Moon EA, Barbey R, Yuen S, Rickman BH, Bryce NS, Bickley S, Tanudji M, Jones SK, Howell VM, Hawkett BS. Biodistribution and Clearance of Stable Superparamagnetic Maghemite Iron Oxide Nanoparticles in Mice Following Intraperitoneal Administration. Int J Mol Sci 2018; 19:E205. [PMID: 29320407 PMCID: PMC5796154 DOI: 10.3390/ijms19010205] [Citation(s) in RCA: 55] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2017] [Revised: 12/17/2017] [Accepted: 12/27/2017] [Indexed: 12/21/2022] Open
Abstract
Nanomedicine is an emerging field with great potential in disease theranostics. We generated sterically stabilized superparamagnetic iron oxide nanoparticles (s-SPIONs) with average core diameters of 10 and 25 nm and determined the in vivo biodistribution and clearance profiles. Healthy nude mice underwent an intraperitoneal injection of these s-SPIONs at a dose of 90 mg Fe/kg body weight. Tissue iron biodistribution was monitored by atomic absorption spectroscopy and Prussian blue staining. Histopathological examination was performed to assess tissue toxicity. The 10 nm s-SPIONs resulted in higher tissue-iron levels, whereas the 25 nm s-SPIONs peaked earlier and cleared faster. Increased iron levels were detected in all organs and body fluids tested except for the brain, with notable increases in the liver, spleen, and the omentum. The tissue-iron returned to control or near control levels within 7 days post-injection, except in the omentum, which had the largest and most variable accumulation of s-SPIONs. No obvious tissue changes were noted although an influx of macrophages was observed in several tissues suggesting their involvement in s-SPION sequestration and clearance. These results demonstrate that the s-SPIONs do not degrade or aggregate in vivo and intraperitoneal administration is well tolerated, with a broad and transient biodistribution. In an ovarian tumor model, s-SPIONs were shown to accumulate in the tumors, highlighting their potential use as a chemotherapy delivery agent.
Collapse
Affiliation(s)
- Binh T T Pham
- Key Centre for Polymers and Colloids, School of Chemistry, University of Sydney, Sydney, NSW 2006, Australia.
| | - Emily K Colvin
- Bill Walsh Translational Cancer Research Laboratory, Kolling Institute, Royal North Shore Hospital, Sydney, NSW 2065, Australia.
- Sydney Medical School-Northern, University of Sydney, Sydney, NSW 2006, Australia.
| | - Nguyen T H Pham
- Key Centre for Polymers and Colloids, School of Chemistry, University of Sydney, Sydney, NSW 2006, Australia.
| | - Byung J Kim
- Key Centre for Polymers and Colloids, School of Chemistry, University of Sydney, Sydney, NSW 2006, Australia.
| | - Emily S Fuller
- Bill Walsh Translational Cancer Research Laboratory, Kolling Institute, Royal North Shore Hospital, Sydney, NSW 2065, Australia.
- Sydney Medical School-Northern, University of Sydney, Sydney, NSW 2006, Australia.
| | - Elizabeth A Moon
- Bill Walsh Translational Cancer Research Laboratory, Kolling Institute, Royal North Shore Hospital, Sydney, NSW 2065, Australia.
| | - Raphael Barbey
- Key Centre for Polymers and Colloids, School of Chemistry, University of Sydney, Sydney, NSW 2006, Australia.
| | - Samuel Yuen
- Bill Walsh Translational Cancer Research Laboratory, Kolling Institute, Royal North Shore Hospital, Sydney, NSW 2065, Australia.
| | - Barry H Rickman
- Sydney School of Veterinary Science, University of Sydney Teaching Hospital Camden, Camden, NSW 2570, Australia.
| | - Nicole S Bryce
- Key Centre for Polymers and Colloids, School of Chemistry, University of Sydney, Sydney, NSW 2006, Australia.
| | | | - Marcel Tanudji
- Sirtex Medical Limited, North Sydney, NSW 2060, Australia.
| | | | - Viive M Howell
- Bill Walsh Translational Cancer Research Laboratory, Kolling Institute, Royal North Shore Hospital, Sydney, NSW 2065, Australia.
- Sydney Medical School-Northern, University of Sydney, Sydney, NSW 2006, Australia.
| | - Brian S Hawkett
- Key Centre for Polymers and Colloids, School of Chemistry, University of Sydney, Sydney, NSW 2006, Australia.
| |
Collapse
|
12
|
Nguyen D, Pham BT, Huynh V, Kim BJ, Pham NT, Bickley SA, Jones SK, Serelis A, Davey T, Such C, Hawkett BS. Monodispersed polymer encapsulated superparamagnetic iron oxide nanoparticles for cell labeling. POLYMER 2016. [DOI: 10.1016/j.polymer.2016.08.064] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
|
13
|
Poon CK, Tang O, Chen XM, Pham BTT, Gody G, Pollock CA, Hawkett BS, Perrier S. Preparation of Inert Polystyrene Latex Particles as MicroRNA Delivery Vectors by Surfactant-Free RAFT Emulsion Polymerization. Biomacromolecules 2016; 17:965-73. [DOI: 10.1021/acs.biomac.5b01633] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- Cheuk Ka Poon
- Key
Centre for Polymers and Colloids, School of Chemistry, The University of Sydney, Building F11, Sydney, NSW 2006, Australia
| | - Owen Tang
- Kolling
Institute of Medical Research, Royal North Shore Hospital and The University of Sydney, St. Leonards, NSW 2065, Australia
| | - Xin-Ming Chen
- Kolling
Institute of Medical Research, Royal North Shore Hospital and The University of Sydney, St. Leonards, NSW 2065, Australia
| | - Binh T. T. Pham
- Key
Centre for Polymers and Colloids, School of Chemistry, The University of Sydney, Building F11, Sydney, NSW 2006, Australia
| | - Guillaume Gody
- Department
of Chemistry, The University of Warwick, Coventry, CV4 7AL, United Kingdom
| | - Carol A. Pollock
- Kolling
Institute of Medical Research, Royal North Shore Hospital and The University of Sydney, St. Leonards, NSW 2065, Australia
| | - Brian S. Hawkett
- Key
Centre for Polymers and Colloids, School of Chemistry, The University of Sydney, Building F11, Sydney, NSW 2006, Australia
| | - Sébastien Perrier
- Key
Centre for Polymers and Colloids, School of Chemistry, The University of Sydney, Building F11, Sydney, NSW 2006, Australia
- Department
of Chemistry, The University of Warwick, Coventry, CV4 7AL, United Kingdom
- Faculty
of Pharmacy and Pharmaceutical Sciences, Monash University, 381
Royal Parade, Parkville, VIC 3052, Australia
| |
Collapse
|
14
|
King LB, Meyer E, Hopkins MA, Hawkett BS, Jain N. Self-assembling array of magnetoelectrostatic jets from the surface of a superparamagnetic ionic liquid. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2014; 30:14143-14150. [PMID: 25372842 DOI: 10.1021/la503341p] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Electrospray is a versatile technology used, for example, to ionize biomolecules for mass spectrometry, create nanofibers and nanowires, and propel spacecraft in orbit. Traditionally, electrospray is achieved via microfabricated capillary needle electrodes that are used to create the fluid jets. Here we report on multiple parallel jetting instabilities realized through the application of simultaneous electric and magnetic fields to the surface of a superparamagnetic electrically conducting ionic liquid with no needle electrodes. The ionic liquid ferrofluid is synthesized by suspending magnetic nanoparticles in a room-temperature molten salt carrier liquid. Two ILFFs are reported: one based on ethylammonium nitrate (EAN) and the other based on EMIM-NTf2. The ILFFs display an electrical conductivity of 0.63 S/m and a relative magnetic permeability as high as 10. When coincident electric and magnetic fields are applied to these liquids, the result is a self-assembling array of emitters that are composed entirely of the colloidal fluid. An analysis of the magnetic surface stress induced on the ILFF shows that the electric field required for transition to spray can be reduced by as much as 4.5 × 10(7) V/m compared to purely electrostatic spray. Ferrofluid mode studies in nonuniform magnetic fields show that it is feasible to realize arrays with up to 16 emitters/mm(2).
Collapse
Affiliation(s)
- Lyon B King
- Department of Mechanical Engineering, Michigan Technological University , 1400 Townsend Drive, Houghton, Michigan 49931, United States
| | | | | | | | | |
Collapse
|
15
|
Ultrasmall superparamagnetic iron oxide nanoparticle prelabelling of human neural precursor cells. Biomaterials 2014; 35:5549-64. [PMID: 24726535 DOI: 10.1016/j.biomaterials.2014.03.061] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2014] [Accepted: 03/21/2014] [Indexed: 12/31/2022]
Abstract
Stem cells prelabelled with iron oxide nanoparticles can be visualised using magnetic resonance imaging (MRI). This technique allows for noninvasive long-term monitoring of migration, integration and stem cell fate following transplantation into living animals. In order to determine biocompatibility, the present study investigated the biological impact of introducing ultrasmall superparamagnetic iron oxide nanoparticles (USPIOs) into primary human fetal neural precursor cells (hNPCs) in vitro. USPIOs with a mean diameter of 10-15 nm maghemite iron oxide core were sterically stabilised by 95% methoxy-poly(ethylene glycol) (MPEG) and either 5% cationic (NH2) end-functionalised, or 5% Rhodamine B end-functionalised, polyacrylamide. The stabilising polymer diblocks were synthesised by reversible addition-fragmentation chain transfer (RAFT) polymerisation. Upon loading, cellular viability, total iron capacity, differentiation, average distance of migration and changes in intracellular calcium ion concentration were measured to determine optimal loading conditions. Taken together we demonstrate that prelabelling of hNPCs with USPIOs has no significant detrimental effect on cell biology and that USPIOs, when utilised at an optimised dosage, are an effective means of noninvasively tracking prelabelled hNPCs.
Collapse
|