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Silva FRO, Lima NB, Bellini MH, Teixeira LFS, Du EY, Jamshidi N, Gooding J, Martin AD, Macmillan A, Marquis CP, Thordarson P. Lanthanide-based β-Tricalcium Phosphate Upconversion Nanoparticles as an Effective Theranostic Nonviral Vectors for Image-Guided Gene Therapy. Nanotheranostics 2022; 6:306-321. [PMID: 35223382 PMCID: PMC8864251 DOI: 10.7150/ntno.68789] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2021] [Accepted: 01/13/2022] [Indexed: 11/06/2022] Open
Abstract
Lanthanide-based beta-tricalcium phosphate (β-TCP) upconversion nanoparticles are exploited as a non-viral vector for imaging guided-gene therapy by virtue of their unique optical properties and multi-modality imaging ability, high transfection efficiency, high biocompatibility, dispersibility, simplicity of synthesis and surface modification. Ytterbium and thulium-doped β-TCP nanoparticles (βTCPYbTm) are synthesized via co-precipitation method, coated with polyethylenimine (PEI) and functionalized with a nuclear-targeting peptide (TAT). Further, in vitro studies revealed that the nanotheranostic carriers are able to transfect cells with the plasmid eGFP at a high efficiency, with approximately 60% of total cells producing the fluorescent green protein. The optimized protocol developed comprises the most efficient βTCPYbTm/PEI configuration, the amount and the order of assembly of βTCPYbTm:PEI, TAT, plasmid DNA and the culturing conditions. With having excellent dispersibility and high chemical affinity toward nucleic acid, calcium ions released from βTCPYbTm:PEI nanoparticles can participate in delivering nucleic acids and other therapeutic molecules, overcoming the nuclear barriers and improving the transfection efficacy. Equally important, the feasibility of the upconversion multifunctional nanovector to serve as an effective contrast agent for imaging modality, capable of converting low-energy light to higher-energy photons via a multi-photons mechanism, endowing greater unique luminescent properties, was successfully demonstrated.
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Affiliation(s)
- Flavia Rodrigues Oliveira Silva
- Instituto de Pesquisas Energéticas e Nucleares, São Paulo, 05508-000, Brazil.,School of Chemistry, Faculty of Science, The University of New South Wales, Sydney NSW 2052, Australia.,School of Biotechnology and Biomolecular Sciences, Faculty of Science, The University of New South Wales, Sydney NSW 2052, Australia
| | - Nelson Batista Lima
- Instituto de Pesquisas Energéticas e Nucleares, São Paulo, 05508-000, Brazil
| | | | | | - Eric Yiwei Du
- School of Chemistry, Faculty of Science, The University of New South Wales, Sydney NSW 2052, Australia
| | - Niloufar Jamshidi
- School of Chemistry, Faculty of Science, The University of New South Wales, Sydney NSW 2052, Australia
| | - Justin Gooding
- School of Chemistry, Faculty of Science, The University of New South Wales, Sydney NSW 2052, Australia
| | - Adam David Martin
- Dementia Research Centre, Department of Biomedical Sciences, Macquarie University, Sydney, NSW 2019, Australia
| | - Alexander Macmillan
- Katharina Gaus Light Microscopy Facility, Mark Wainwright Analytical Centre, Lowy Cancer Research Centre, The University of New South Wales, Sydney, NSW 2052, Australia
| | - Christopher Peter Marquis
- School of Biotechnology and Biomolecular Sciences, Faculty of Science, The University of New South Wales, Sydney NSW 2052, Australia
| | - Pall Thordarson
- School of Chemistry, Faculty of Science, The University of New South Wales, Sydney NSW 2052, Australia.,The UNSW RNA Institute, The University of New South Wales, Sydney NSW 2052, Australia
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Courrol LC, Monteiro AM, O Silva FR, Gomes L, Vieira ND, Gidlund MA, Figueiredo Neto AM. Novel fluorescent probe for low density lipoprotein, based on the enhancement of Europium emission band. Opt Express 2007; 15:7066-7074. [PMID: 19547024 DOI: 10.1364/oe.15.007066] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
We report here the observation of the enhancement of Europium-tetracycline complex emission in Low Density Lipoprotein (LDL) solutions. Europium emission band of tetracycline solution containing Europium (III) chloride hexahydrate was tested to obtain effective enhancement in the presence of native LDL and oxidized LDL. Europium emission lifetime in the presence of lipoproteins was measured, resulting in a simple method to measure the lipoproteins quantity in an aqueous solution at physiological pH. This method shows that the complex can be used as a sensor to determine the different states of native and oxidized LDL in biological fluids.
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