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Machado TR, Zanardo CE, Vilela RRC, Miranda RR, Moreno NS, Leite CM, Longo E, Zucolotto V. Tailoring the structure and self-activated photoluminescence of carbonated amorphous calcium phosphate nanoparticles for bioimaging applications. J Mater Chem B 2024; 12:4945-4961. [PMID: 38685886 DOI: 10.1039/d3tb02915h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/02/2024]
Abstract
Self-activated luminescent calcium phosphate (CaP) nanoparticles, including hydroxyapatite (HA) and amorphous calcium phosphate (ACP), are promising for bioimaging and theragnostic applications in nanomedicine, eliminating the need for activator ions or fluorophores. In this study, we developed luminescent and stable citrate-functionalized carbonated ACP nanoparticles for bioimaging purposes. Our findings revealed that both the CO32- content and the posterior heating step at 400 °C significantly influenced the composition and the structural ordering of the chemically precipitated ACP nanoparticles, impacting the intensity, broadness, and position of the defect-related photoluminescence (PL) emission band. The heat-treated samples also exhibited excitation-dependent PL under excitation wavelengths typically used in bioimaging (λexc = 405, 488, 561, and 640 nm). Citrate functionalization improved the PL intensity of the nanoparticles by inhibiting non-radiative deactivation mechanisms in solution. Additionally, it resulted in an increased colloidal stability and reduced aggregation, high stability of the metastable amorphous phase and the PL emission for at least 96 h in water and supplemented culture medium. MTT assay of HepaRG cells, incubated for 24 and 48 h with the nanoparticles in concentrations ranging from 10 to 320 μg mL-1, evidenced their high biocompatibility. Internalization studies using the nanoparticles self-activated luminescence showed that cellular uptake of the nanoparticles is both time (4-24 h) and concentration (160-320 μg mL-1) dependent. Experiments using confocal laser scanning microscopy allowed the successful imaging of the nanoparticles inside cells via their intrinsic PL after 4 h of incubation. Our results highlight the potential use of citrate-functionalized carbonated ACP nanoparticles for use in internalization assays and bioimaging procedures.
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Affiliation(s)
- Thales R Machado
- GNANO - Nanomedicine and Nanotoxicology Group, Physics Institute of São Carlos, University of São Paulo, 13566-590 São Carlos, SP, Brazil.
| | - Carlos E Zanardo
- GNANO - Nanomedicine and Nanotoxicology Group, Physics Institute of São Carlos, University of São Paulo, 13566-590 São Carlos, SP, Brazil.
| | - Raquel R C Vilela
- GNANO - Nanomedicine and Nanotoxicology Group, Physics Institute of São Carlos, University of São Paulo, 13566-590 São Carlos, SP, Brazil.
| | - Renata R Miranda
- GNANO - Nanomedicine and Nanotoxicology Group, Physics Institute of São Carlos, University of São Paulo, 13566-590 São Carlos, SP, Brazil.
| | - Natália S Moreno
- GNANO - Nanomedicine and Nanotoxicology Group, Physics Institute of São Carlos, University of São Paulo, 13566-590 São Carlos, SP, Brazil.
| | - Celisnolia M Leite
- GNANO - Nanomedicine and Nanotoxicology Group, Physics Institute of São Carlos, University of São Paulo, 13566-590 São Carlos, SP, Brazil.
| | - Elson Longo
- CDMF - Center for the Development of Functional Materials, Federal University of São Carlos, 13565-905 São Carlos, SP, Brazil
| | - Valtencir Zucolotto
- GNANO - Nanomedicine and Nanotoxicology Group, Physics Institute of São Carlos, University of São Paulo, 13566-590 São Carlos, SP, Brazil.
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Nowak N, Czekanowska D, Gebarowski T, Wiglusz RJ. Highly cyto- and immune compatible new synthetic fluorapatite nanomaterials co-doped with rubidium(I) and europium(III) ions. BIOMATERIALS ADVANCES 2024; 156:213709. [PMID: 38039809 DOI: 10.1016/j.bioadv.2023.213709] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/08/2023] [Revised: 10/16/2023] [Accepted: 11/23/2023] [Indexed: 12/03/2023]
Abstract
In the present study, biocompatible luminescent of nanosized fluorapatite doped with rubidium(I) (Rb+ ion) and europium(III) (Eu3+ ion) ions were synthesized via hydrothermal method. It was investigated the influence of co-doped Rb+ and Eu3+ ions on the structural, and morphological characteristics of the obtained fluorapatite materials. The characterization techniques utilized included: X-ray powder diffraction (XRPD), infrared spectroscopy (FT-IR) and transmission electron microscopy (TEM). Moreover, to establish the influence of the co-doped Rb+ and Eu3+ ions on the luminescence properties of the lanthanide ion, emission excitation, emission spectrum and luminescence decays were measured. This confirmed a distinct red emission originating from Eu3+ ions and an increased emission lifetime. To determine the biocompatibility of the obtained fluorapatite compounds, in vitro studies using normal dermal human fibroblasts were performed. The results of these studies clearly demonstrate the remarkable biocompatibility of our compounds. This discovery opens exciting prospects for the use of synthetic fluorapatites doped with Eu3+ and Rb+ ions in various biomedical contexts. In particular, these materials hold great promise for potential applications in regenerative engineering, but also serve as innovative and practical solutions as bone scaffolds and dental implants containing nano-fluorapatite. Further discussion of these properties can be found in this article, along with a discussion of their importance and potential in the field of biomedical applications. However, according to our pervious study and based on our current investigations but also based on available scientific records, it was proposed potential molecular mechanism of Rb+ ions in the process of osteoclastogenesis.
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Affiliation(s)
- Nicole Nowak
- Institute of Low Temperature and Structure Research, Polish Academy of Sciences, Okolna 2, PL-50-422 Wroclaw, Poland; Department of Animal Biostructure and Physiology, Wroclaw University of Environmental and Life Sciences, Norwida 25, PL-50-375 Wroclaw, Poland.
| | - Dominika Czekanowska
- Institute of Low Temperature and Structure Research, Polish Academy of Sciences, Okolna 2, PL-50-422 Wroclaw, Poland
| | - Tomasz Gebarowski
- Department of Animal Biostructure and Physiology, Wroclaw University of Environmental and Life Sciences, Norwida 25, PL-50-375 Wroclaw, Poland
| | - Rafal J Wiglusz
- Institute of Low Temperature and Structure Research, Polish Academy of Sciences, Okolna 2, PL-50-422 Wroclaw, Poland; Department of Organic Chemistry, Bioorganic Chemistry and Biotechnology, Faculty of Chemistry, Silesian University of Technology, Krzywoustego 4, 44-100 Gliwice, Poland.
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Fernández-Penas R, Verdugo-Escamilla C, Triunfo C, Gärtner S, D'Urso A, Oltolina F, Follenzi A, Maoloni G, Cölfen H, Falini G, Gómez-Morales J. A sustainable one-pot method to transform seashell waste calcium carbonate to osteoinductive hydroxyapatite micro-nanoparticles. J Mater Chem B 2023; 11:7766-7777. [PMID: 37476854 DOI: 10.1039/d3tb00856h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/22/2023]
Abstract
We have developed a straightforward, one-pot, low-temperature hydrothermal method to transform oyster shell waste particles (bCCP) from the species Crassostrea gigas (Mg-calcite, 5 wt% Mg) into hydroxyapatite (HA) micro/nanoparticles. The influence of the P reagents (H3PO4, KH2PO4, and K2HPO4), P/bCCP molar ratios (0.24, 0.6, and 0.96), digestion temperatures (25-200 °C), and digestion times (1 week-2 months) on the transformation process was thoroughly investigated. At 1 week, the minimum temperature to yield the full transformation significantly reduced from 160 °C to 120 °C when using K2HPO4 instead of KH2PO4 at a P/bCCP ratio of 0.6, and even to 80 °C at a P/bCCP ratio of 0.96. The transformation took place via a dissolution-reprecipitation mechanism driven by the favorable balance between HA precipitation and bCCP dissolution, due to the lower solubility product of HA than that of calcite at any of the tested temperatures. Both the bCCP and the derived HA particles were cytocompatible for MG-63 human osteosarcoma cells and m17.ASC murine mesenchymal stem cells, and additionally, they promoted the osteogenic differentiation of m17.ASC, especially the HA particles. Because of their physicochemical features and biological compatibility, both particles could be useful osteoinductive platforms for translational applications in bone tissue engineering.
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Affiliation(s)
- Raquel Fernández-Penas
- Laboratorio de Estudios Cristalográficos, IACT (CSIC-UGR), Avda. Las Palmeras, no 4, 18100 Armilla, Spain.
| | | | - Carla Triunfo
- Department of Chemistry "Giacomo Ciamician", University of Bologna, via F. Selmi 2, 40126 Bologna, Italy
- Fano Marine Center, The Inter-Institute Center for Research on Marine Biodiversity, Resources and Biotechnologies, viale Adriatico 1/N, 61032 Fano, Italy
| | - Stefanie Gärtner
- Physical Chemistry, Department of Chemistry, University of Konstanz, Universitätsstrasse 10, Box 714, D-78457 Konstanz, Germany
| | - Annarita D'Urso
- Dipartimento di Scienze della Salute, Università del Piemonte Orientale, A. Avogadro" Via Solaroli, 17, 28100 Novara, Italy
| | - Francesca Oltolina
- Dipartimento di Scienze della Salute, Università del Piemonte Orientale, A. Avogadro" Via Solaroli, 17, 28100 Novara, Italy
| | - Antonia Follenzi
- Dipartimento di Scienze della Salute, Università del Piemonte Orientale, A. Avogadro" Via Solaroli, 17, 28100 Novara, Italy
| | - Gabriele Maoloni
- Plant Ascoli Piceno, Finproject S.p.A., 3100 Ascoli Piceno, Italy
| | - Helmut Cölfen
- Physical Chemistry, Department of Chemistry, University of Konstanz, Universitätsstrasse 10, Box 714, D-78457 Konstanz, Germany
| | - Giuseppe Falini
- Department of Chemistry "Giacomo Ciamician", University of Bologna, via F. Selmi 2, 40126 Bologna, Italy
| | - Jaime Gómez-Morales
- Laboratorio de Estudios Cristalográficos, IACT (CSIC-UGR), Avda. Las Palmeras, no 4, 18100 Armilla, Spain.
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4
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Torres-Mansilla A, Álvarez-Lloret P, Fernández-Penas R, D’Urso A, Baldión PA, Oltolina F, Follenzi A, Gómez-Morales J. Hydrothermal Transformation of Eggshell Calcium Carbonate into Apatite Micro-Nanoparticles: Cytocompatibility and Osteoinductive Properties. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:2299. [PMID: 37630883 PMCID: PMC10458568 DOI: 10.3390/nano13162299] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2023] [Revised: 08/05/2023] [Accepted: 08/07/2023] [Indexed: 08/27/2023]
Abstract
The eggshell is a biomineral consisting of CaCO3 in the form of calcite phase and a pervading organic matrix (1-3.5 wt.%). Transforming eggshell calcite particles into calcium phosphate (apatite) micro-nanoparticles opens the door to repurposing the eggshell waste as materials with potential biomedical applications, fulfilling the principles of the circular economy. Previous methods to obtain these particles consisted mainly of two steps, the first one involving the calcination of the eggshell. In this research, direct transformation by a one-pot hydrothermal method ranging from 100-200 °C was studied, using suspensions with a stoichiometric P/CaCO3 ratio, K2HPO4 as P reagent, and eggshells particles (Ø < 50 μm) both untreated and treated with NaClO to remove surface organic matter. In the untreated group, the complete conversion was achieved at 160 °C, and most particles displayed a hexagonal plate morphology, eventually with a central hole. In the treated group, this replacement occurred at 180 °C, yielding granular (spherulitic) apatite nanoparticles. The eggshell particles and apatite micro-nanoparticles were cytocompatible when incubated with MG-63 human osteosarcoma cells and m17.ASC murine mesenchymal stem cells and promoted the osteogenic differentiation of m17.ASC cells. The study results are useful for designing and fabricating biocompatible microstructured materials with osteoinductive properties for applications in bone tissue engineering and dentistry.
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Affiliation(s)
- Adriana Torres-Mansilla
- Departament of Geology, University of Oviedo, 33005 Oviedo, Spain;
- Laboratory of Crystallographic Studies, IACT-CSIC-University of Granada, Avda. Las Palmeras, n° 4, 18100 Armilla, Spain;
| | | | - Raquel Fernández-Penas
- Laboratory of Crystallographic Studies, IACT-CSIC-University of Granada, Avda. Las Palmeras, n° 4, 18100 Armilla, Spain;
| | - Annarita D’Urso
- Dipartimento di Scienze della Salute, Università del Piemonte Orientale, “A. Avogadro” Via Solaroli, 17, 28100 Novara, Italy; (A.D.); (F.O.); (A.F.)
| | - Paula Alejandra Baldión
- Departament of Oral Health, Faculty of Dentistry, Universidad Nacional de Colombia, Bogotá 111321, Colombia;
| | - Francesca Oltolina
- Dipartimento di Scienze della Salute, Università del Piemonte Orientale, “A. Avogadro” Via Solaroli, 17, 28100 Novara, Italy; (A.D.); (F.O.); (A.F.)
| | - Antonia Follenzi
- Dipartimento di Scienze della Salute, Università del Piemonte Orientale, “A. Avogadro” Via Solaroli, 17, 28100 Novara, Italy; (A.D.); (F.O.); (A.F.)
| | - Jaime Gómez-Morales
- Laboratory of Crystallographic Studies, IACT-CSIC-University of Granada, Avda. Las Palmeras, n° 4, 18100 Armilla, Spain;
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Bahraminasab M, Doostmohammadi N, Talebi A, Arab S, Alizadeh A, Ghanbari A, Salati A. 3D printed polylactic acid/gelatin-nano-hydroxyapatite/platelet-rich plasma scaffold for critical-sized skull defect regeneration. Biomed Eng Online 2022; 21:86. [PMID: 36503442 PMCID: PMC9743557 DOI: 10.1186/s12938-022-01056-w] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2022] [Accepted: 12/05/2022] [Indexed: 12/14/2022] Open
Abstract
BACKGROUND Three-dimensional (3D) printing is a capable approach for the fabrication of bone tissue scaffolds. Nevertheless, a purely made scaffold such as polylactic acid (PLA) may suffer from shortcomings and be restricted due to its biological behavior. Gelatin, hydroxyapatite and platelet-rich plasma (PRP) have been revealed to be of potential to enhance the osteogenic effect. In this study, it was tried to improve the properties of 3D-printed PLA scaffolds by infilling them with gelatin-nano-hydroxyapatite (PLA/G-nHA) and subsequent coating with PRP. For comparison, bare PLA and PLA/G-nHA scaffolds were also fabricated. The printing accuracy, the scaffold structural characterizations, mechanical properties, degradability behavior, cell adhesion, mineralization, systemic effect of the scaffolds on the liver enzymes, osteocalcin level in blood serum and in vivo bone regeneration capability in rat critical-sized calvaria defect were evaluated. RESULTS High printing accuracy (printing error of < 11%) was obtained for all measured parameters including strut thickness, pore width, scaffold density and porosity%. The highest mean ultimate compression strength (UCS) was associated with PLA/G-nHA/PRP scaffolds, which was 10.95 MPa. A slow degradation rate was observed for all scaffolds. The PLA/G-nHA/PRP had slightly higher degradation rate, possibly due to PRP release, with burst release occurred at week 4. The MTT results showed that PLA/G-nHA/PRP provided the highest cell proliferation at all time points, and the serum biochemistry (ALT and AST level) results indicated no abnormal/toxic influence caused by scaffold biomaterials. Superior cell adhesion and mineralization were obtained for PLA/G-nHA/PRP. Furthermore, all the developed scaffolds showed bone repair capability. The PLA/G-nHA/PRP scaffolds could better support bone regeneration than bare PLA and PLA/G-nHA scaffolds. CONCLUSION The PLA/G-nHA/PRP scaffolds can be considered as potential for hard tissue repair.
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Affiliation(s)
- Marjan Bahraminasab
- grid.486769.20000 0004 0384 8779Nervous System Stem Cells Research Center, Semnan University of Medical Sciences, Semnan, Iran ,grid.486769.20000 0004 0384 8779Department of Tissue Engineering and Applied Cell Sciences, School of Medicine, Semnan University of Medical Sciences, Semnan, Iran
| | - Nesa Doostmohammadi
- grid.486769.20000 0004 0384 8779Department of Tissue Engineering and Applied Cell Sciences, School of Medicine, Semnan University of Medical Sciences, Semnan, Iran ,grid.412475.10000 0001 0506 807XFaculty of Metallurgical and Materials Engineering, Semnan University, Semnan, Iran
| | - Athar Talebi
- grid.486769.20000 0004 0384 8779Nervous System Stem Cells Research Center, Semnan University of Medical Sciences, Semnan, Iran
| | - Samaneh Arab
- grid.486769.20000 0004 0384 8779Nervous System Stem Cells Research Center, Semnan University of Medical Sciences, Semnan, Iran ,grid.486769.20000 0004 0384 8779Department of Tissue Engineering and Applied Cell Sciences, School of Medicine, Semnan University of Medical Sciences, Semnan, Iran
| | - Akram Alizadeh
- grid.486769.20000 0004 0384 8779Nervous System Stem Cells Research Center, Semnan University of Medical Sciences, Semnan, Iran ,grid.486769.20000 0004 0384 8779Department of Tissue Engineering and Applied Cell Sciences, School of Medicine, Semnan University of Medical Sciences, Semnan, Iran
| | - Ali Ghanbari
- grid.486769.20000 0004 0384 8779Research Center of Physiology, Semnan University of Medical Sciences, Semnan, Iran
| | - Amir Salati
- grid.486769.20000 0004 0384 8779Nervous System Stem Cells Research Center, Semnan University of Medical Sciences, Semnan, Iran ,grid.486769.20000 0004 0384 8779Department of Tissue Engineering and Applied Cell Sciences, School of Medicine, Semnan University of Medical Sciences, Semnan, Iran
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Maarof NNN, Abdulmalek E, Fakurazi S, Rahman MBA. Biodegradable Carbonate Apatite Nanoparticle as a Delivery System to Promote Afatinib Delivery for Non-Small Cell Lung Cancer Treatment. Pharmaceutics 2022; 14:pharmaceutics14061230. [PMID: 35745802 PMCID: PMC9228174 DOI: 10.3390/pharmaceutics14061230] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2022] [Revised: 06/03/2022] [Accepted: 06/06/2022] [Indexed: 12/04/2022] Open
Abstract
Nanomedicine-based drug-delivery systems have significant interest in cancer treatment, such as improving the stabilities and biocompatibilities, precise targeting, and reducing toxicities for non-cancerous cells. Herein, this study presents the synthesis and characterisation of carbonate apatite nanoparticles (nCA) and encapsulated afatinib (AFA) as promising drug delivery candidates for lung cancer treatment. nCA/AFA was synthesised and physicochemically characterised, then the encapsulation capacity, drug loading, and cumulative drug release profile were evaluated. Powder X-ray diffraction (PXRD) confirmed that the synthesised nCA is apatite. Fourier-transform infrared spectroscopy (FTIR) results confirmed the drug loading into the nanoparticles. High-resolution transmission electron microscopy (HR-TEM) determined the morphology of nCA and nCA/AFA and the diameters of 47.36 ± 3.16 and 42.97 ± 2.78 nm, respectively, without an unaltered nCA phase. Encapsulation efficiency (%) and drug loading (%) were 55.08% ± 1.68% and 8.19% ± 0.52%. Brunauer–Emmett–Teller (BET) and dynamic light-scattering (DLS) results revealed that the synthesised nCA is mesoporous, with a surface area of 55.53 m2/g, and is negatively charged. Atomic force microscopy (AFM) showed increasing roughness of nCA/AFA compared to nCA. The drug release from the nano-formulation nCA/AFA demonstrated slow and sustained release compared to the pure drug. Accordingly, nCA/AFA represents a promising drug delivery system for NSCLC treatment.
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Affiliation(s)
- Nian N. N. Maarof
- Integrated Chemical BioPhysics Research, Department of Chemistry, Faculty of Science, Universiti Putra Malaysia, Serdang 43400, Selangor, Malaysia; (N.N.N.M.); (E.A.)
- Department of Chemistry, College of Education, University of Sulaimani, Sulaimani 46001, Iraq
| | - Emilia Abdulmalek
- Integrated Chemical BioPhysics Research, Department of Chemistry, Faculty of Science, Universiti Putra Malaysia, Serdang 43400, Selangor, Malaysia; (N.N.N.M.); (E.A.)
| | - Sharida Fakurazi
- Laboratory of Vaccines and Immunotherapeutics, Institute of Bioscience, Universiti Putra Malaysia UPM, Serdang 43400, Selangor, Malaysia;
- Department of Human Anatomy, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia UPM, Serdang 43400, Selangor, Malaysia
| | - Mohd Basyaruddin Abdul Rahman
- Integrated Chemical BioPhysics Research, Department of Chemistry, Faculty of Science, Universiti Putra Malaysia, Serdang 43400, Selangor, Malaysia; (N.N.N.M.); (E.A.)
- UPM-MAKNA Cancer Laboratory, Institute of Bioscience, Universiti Putra Malaysia, Serdang 43400, Selangor, Malaysia
- Correspondence: ; Tel.: +60-397-696-601
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Ivanchenko P, Escolano-Casado G, Mino L, Dassi L, Fernández-Sánchez JF, Martra G, Gómez-Morales J. Structural and surface studies of luminescent Ca/Eu phosphate nanomaterials: From the bulk to surface features. Colloids Surf B Biointerfaces 2022; 217:112620. [PMID: 35738077 DOI: 10.1016/j.colsurfb.2022.112620] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2022] [Revised: 05/20/2022] [Accepted: 06/06/2022] [Indexed: 11/16/2022]
Abstract
Three luminescent Eu-containing phosphate materials (Ca-doped europium phosphate monohydrate, Eu-doped carbonated-apatite, and europium phosphate monohydrate) were prepared and analyzed on the level of bulk structure and surface properties and compared to the biomimetic non-luminescent counterpart hydroxyapatite. Europium-containing phosphate materials exhibited nanosized dimensions but different luminescence emissions and luminescence lifetimes depending on their crystalline structures (i.e., lanthanide phosphate or apatites) and chemical composition. The introduction of Eu in the crystal lattice leads to a notable decrease in the overall Lewis acidity of the surface cationic sites detected by CO probing. Further, the mixed Eu/Ca-containing materials surfaces were found to be very similar to the reference hydroxyapatite in terms of water adsorption energy, while the pure europium phosphate resulted to have the notably higher energy values of direct interaction of water molecules with the surface cations with no detected propagation of this effect towards water overlayers.
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Affiliation(s)
- Pavlo Ivanchenko
- Department of Chemistry and Interdepartmental Nanostructured Interfaces and Surfaces (NIS) Centre, University of Torino, via P. Giuria 7, Torino 10125, Italy; MOBI Research Group, Department of Electric Engineering and Energy Technology (ETEC), Vrije Universiteit Brussel, Pleinlaan 2, Brussels 1050, Belgium
| | - Guillermo Escolano-Casado
- Department of Chemistry and Interdepartmental Nanostructured Interfaces and Surfaces (NIS) Centre, University of Torino, via P. Giuria 7, Torino 10125, Italy.
| | - Lorenzo Mino
- Department of Chemistry and Interdepartmental Nanostructured Interfaces and Surfaces (NIS) Centre, University of Torino, via P. Giuria 7, Torino 10125, Italy
| | - Luca Dassi
- Department of Chemistry and Interdepartmental Nanostructured Interfaces and Surfaces (NIS) Centre, University of Torino, via P. Giuria 7, Torino 10125, Italy
| | - Jorge F Fernández-Sánchez
- Department of Analytical Chemistry, Faculty of Sciences, University of Granada, Avda. Fuentenueva s/n, Granada 18071, Spain
| | - Gianmario Martra
- Department of Chemistry and Interdepartmental Nanostructured Interfaces and Surfaces (NIS) Centre, University of Torino, via P. Giuria 7, Torino 10125, Italy
| | - Jaime Gómez-Morales
- Laboratorio de Estudios Cristalográficos, Instituto Andaluz de Ciencias de la Tierra (CSIC-UGR), Avda. Las Palmeras, nº 4. E-18100 Armilla, Granada, Spain
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Europium-Doped Carbonated Apatites. MINERALS 2022. [DOI: 10.3390/min12050503] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
In this first exploration of europium-doped carbonated apatites the location of carbonate was determined using the environment model for the analysis of IR and NMR spectra. Europium-doped carbonated apatites, containing Eu/(Eu + Ca) mole ratios of about 10%, were prepared by aqueous one-step and addition syntheses. The IR and NMR spectra of the carbonate in the samples are described using the environment model: A-type carbonate is assigned to channels containing only calcium ions (A = Ca6) or to channels containing one Na+ or a vacancy (A’ = Ca5Na or Ca5). The presence of the channel Eu3+ and the use of triammonium phosphate in the synthesis produce considerable A-type carbonate. For the apatites reported here, the carbonate is distributed in approximately a 60 to 40 ratio for channel occupancy versus replacement of phosphate. The europium is assumed to have replaced calcium ions in the Ca(II) (channel) location and the stoichiometry of the products is used to propose that, contrary to much of the Eu(III) substitution literature, the charge-balance mechanism is likely to involve the substitution of two europium ions for three calcium ion with the concomitant formation of a calcium vacancy. The environment model is also used in the correlation of the a-axial lattice parameter with the percent A-type carbonate.
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9
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Luminescent Citrate-Functionalized Terbium-Substituted Carbonated Apatite Nanomaterials: Structural Aspects, Sensitized Luminescence, Cytocompatibility, and Cell Uptake Imaging. NANOMATERIALS 2022; 12:nano12081257. [PMID: 35457965 PMCID: PMC9032902 DOI: 10.3390/nano12081257] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/04/2022] [Revised: 04/03/2022] [Accepted: 04/05/2022] [Indexed: 12/12/2022]
Abstract
This work explores the preparation of luminescent and biomimetic Tb3+-doped citrate-functionalized carbonated apatite nanoparticles. These nanoparticles were synthesized employing a citrate-based thermal decomplexing precipitation method, testing a nominal Tb3+ doping concentration between 0.001 M to 0.020 M, and a maturation time from 4 h to 7 days. This approach allowed to prepare apatite nanoparticles as a single hydroxyapatite phase when the used Tb3+ concentrations were (i) ≤ 0.005 M at all maturation times or (ii) = 0.010 M with 4 h of maturation. At higher Tb3+ concentrations, amorphous TbPO4·nH2O formed at short maturation times, while materials consisting of a mixture of carbonated apatite prisms, TbPO4·H2O (rhabdophane) nanocrystals, and an amorphous phase formed at longer times. The Tb3+ content of the samples reached a maximum of 21.71 wt%. The relative luminescence intensity revealed an almost linear dependence with Tb3+ up to a maximum of 850 units. Neither pH, nor ionic strength, nor temperature significantly affected the luminescence properties. All precipitates were cytocompatible against A375, MCF7, and HeLa carcinogenic cells, and also against healthy fibroblast cells. Moreover, the luminescence properties of these nanoparticles allowed to visualize their intracellular cytoplasmic uptake at 12 h of treatment through flow cytometry and fluorescence confocal microscopy (green fluorescence) when incubated with A375 cells. This demonstrates for the first time the potential of these materials as nanophosphors for living cell imaging compatible with flow cytometry and fluorescence confocal microscopy without the need to introduce an additional fluorescence dye. Overall, our results demonstrated that Tb3+-doped citrate-functionalized apatite nanoparticles are excellent candidates for bioimaging applications.
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Degli Esposti L, Adamiano A, Siliqi D, Giannini C, Iafisco M. The effect of chemical structure of carboxylate molecules on hydroxyapatite nanoparticles. A structural and morphological study. Bioact Mater 2021; 6:2360-2371. [PMID: 33553821 PMCID: PMC7844063 DOI: 10.1016/j.bioactmat.2021.01.010] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2020] [Revised: 01/07/2021] [Accepted: 01/09/2021] [Indexed: 12/30/2022] Open
Abstract
Being the most abundant non-macromolecular organic component of bone, the role of citrate (Cit) in hydroxyapatite (HA) crystallization is of high relevance. In this work we have investigated the influence of hydroxycitrate (CitOH) and glutarate (Glr) on HA crystallization in terms of particle growth, composition, and morphology in comparison to Cit. CitOH and Glr have been selected for this work because they share the same backbone structure of Cit but bear different functional groups in the central region. Our data has revealed that CitOH strongly inhibits HA crystallization more efficiently than Cit. CitOH-HA nanoparticles are composed of platy, elongated particles similar to those of Cit-HA but they are ca. twice smaller and have a lower crystal order. On the other hand, Glr does not inhibit HA crystallization as Cit, but leads to the formation of OCP platelets that convert with maturation time to HA nanorods with larger aspect ratio than Cit-HA. In comparison to Cit-HA samples, Glr-HA nanoparticles have bigger dimensions, and higher structural order. Overall, our data reveal that the central carboxyl group of Cit is involved in the selective binding with HA crystal surface and in regulating HA crystal growth. The results of this work highlight new possibilities to control the formation of HA for designing advanced bioactive materials and give new insights on the role of the structure of Cit in regulating the HA morphology.
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Affiliation(s)
- Lorenzo Degli Esposti
- Institute of Science and Technology for Ceramics (ISTEC), National Research Council (CNR), Via Granarolo 64, 48018, Faenza, Italy
| | - Alessio Adamiano
- Institute of Science and Technology for Ceramics (ISTEC), National Research Council (CNR), Via Granarolo 64, 48018, Faenza, Italy
| | - Dritan Siliqi
- Institute of Crystallography (IC), National Research Council (CNR), Via Amendola 122/O, 70126, Bari, Italy
| | - Cinzia Giannini
- Institute of Crystallography (IC), National Research Council (CNR), Via Amendola 122/O, 70126, Bari, Italy
| | - Michele Iafisco
- Institute of Science and Technology for Ceramics (ISTEC), National Research Council (CNR), Via Granarolo 64, 48018, Faenza, Italy
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11
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Szyszka K, Targońska S, Lewińska A, Watras A, Wiglusz RJ. Quenching of the Eu 3+ Luminescence by Cu 2+ Ions in the Nanosized Hydroxyapatite Designed for Future Bio-Detection. NANOMATERIALS (BASEL, SWITZERLAND) 2021; 11:464. [PMID: 33670306 PMCID: PMC7918106 DOI: 10.3390/nano11020464] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/31/2020] [Revised: 02/05/2021] [Accepted: 02/08/2021] [Indexed: 12/12/2022]
Abstract
The hydroxyapatite nanopowders of the Eu3+-doped, Cu2+-doped, and Eu3+/Cu2+-co-doped Ca10(PO4)6(OH)2 were prepared by a microwave-assisted hydrothermal method. The structural and morphological properties of the products were investigated by X-ray powder diffraction (XRD), transmission electron microscopy techniques (TEM), and infrared spectroscopy (FT-IR). The average crystal size and the unit cell parameters were calculated by a Rietveld refinement tool. The absorption, emission excitation, emission, and luminescence decay time were recorded and studied in detail. The 5D0 → 7F2 transition is the most intense transition. The Eu3+ ions occupied two independent crystallographic sites in these materials exhibited in emission spectra: one Ca(1) site with C3 symmetry and one Ca(2) sites with Cs symmetry. The Eu3+ emission is strongly quenched by Cu2+ ions, and the luminescence decay time is much shorter in the case of Eu3+/Cu2+ co-doped materials than in Eu3+-doped materials. The luminescence quenching mechanism as well as the schematic energy level diagram showing the Eu3+ emission quenching mechanism using Cu2+ ions are proposed. The electron paramagnetic resonance (EPR) technique revealed the existence of at least two different coordination environments for copper(II) ion.
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Affiliation(s)
- Katarzyna Szyszka
- Institute of Low Temperature and Structure Research, PAS, Okolna 2, 50-422 Wroclaw, Poland; (S.T.); (A.W.)
| | - Sara Targońska
- Institute of Low Temperature and Structure Research, PAS, Okolna 2, 50-422 Wroclaw, Poland; (S.T.); (A.W.)
| | - Agnieszka Lewińska
- Faculty of Chemistry, University of Wroclaw, Joliot-Curie 14, 50-383 Wroclaw, Poland;
| | - Adam Watras
- Institute of Low Temperature and Structure Research, PAS, Okolna 2, 50-422 Wroclaw, Poland; (S.T.); (A.W.)
| | - Rafal J. Wiglusz
- Institute of Low Temperature and Structure Research, PAS, Okolna 2, 50-422 Wroclaw, Poland; (S.T.); (A.W.)
- International Institute of Translational Medicine, Jesionowa 11 St., 55–124 Malin, Poland
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12
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Gómez-Morales J, Fernández-Penas R, Romero-Castillo I, Verdugo-Escamilla C, Choquesillo-Lazarte D, D’Urso A, Prat M, Fernández-Sánchez JF. Crystallization, Luminescence and Cytocompatibility of Hexagonal Calcium Doped Terbium Phosphate Hydrate Nanoparticles. NANOMATERIALS (BASEL, SWITZERLAND) 2021; 11:322. [PMID: 33513811 PMCID: PMC7910970 DOI: 10.3390/nano11020322] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/24/2020] [Revised: 01/19/2021] [Accepted: 01/21/2021] [Indexed: 11/26/2022]
Abstract
Luminescent lanthanide-containing biocompatible nanosystems represent promising candidates as nanoplatforms for bioimaging applications. Herein, citrate-functionalized calcium-doped terbium phosphate hydrate nanophosphors of the rhabdophane type were prepared at different synthesis times and different Ca2+/Tb3+ ratios by a bioinspired crystallization method consisting of thermal decomplexing of Ca2+/Tb3+/citrate/phosphate/carbonate solutions. Nanoparticles were characterized by XRD, TEM, SEM, HR-TEM, FTIR, Raman, Thermogravimetry, inductively coupled plasma spectroscopy, thermoanalysis, dynamic light scattering, electrophoretic mobility, and fluorescence spectroscopy. They displayed ill-defined isometric morphologies with sizes ≤50 nm, hydration number n ~ 0.9, tailored Ca2+ content (0.42-8.11 wt%), and long luminescent lifetimes (800-2600 µs). Their relative luminescence intensities in solid state are neither affected by Ca2+, citrate content, nor by maturation time for Ca2+ doping concentration in solution below 0.07 M Ca2+. Only at this doping concentration does the maturation time strongly affect this property, decreasing it. In aqueous suspensions, neither pH nor ionic strength nor temperature affect their luminescence properties. All the nanoparticles displayed high cytocompatibility on two human carcinoma cell lines and cell viability correlated positively with the amount of doping Ca2+. Thus, these nanocrystals represent promising new luminescent nanoprobes for potential biomedical applications and, if coupled with targeting and therapeutic moieties, they could be effective tools for theranostics.
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Affiliation(s)
- Jaime Gómez-Morales
- Laboratorio de Estudios Cristalográficos, IACT, CSIC-UGR, Avda. Las Palmeras, nº 4, 18100 Granada, Spain; (R.F.-P.); (I.R.-C.); (C.V.-E.); (D.C.-L.)
| | - Raquel Fernández-Penas
- Laboratorio de Estudios Cristalográficos, IACT, CSIC-UGR, Avda. Las Palmeras, nº 4, 18100 Granada, Spain; (R.F.-P.); (I.R.-C.); (C.V.-E.); (D.C.-L.)
| | - Ismael Romero-Castillo
- Laboratorio de Estudios Cristalográficos, IACT, CSIC-UGR, Avda. Las Palmeras, nº 4, 18100 Granada, Spain; (R.F.-P.); (I.R.-C.); (C.V.-E.); (D.C.-L.)
| | - Cristóbal Verdugo-Escamilla
- Laboratorio de Estudios Cristalográficos, IACT, CSIC-UGR, Avda. Las Palmeras, nº 4, 18100 Granada, Spain; (R.F.-P.); (I.R.-C.); (C.V.-E.); (D.C.-L.)
| | - Duane Choquesillo-Lazarte
- Laboratorio de Estudios Cristalográficos, IACT, CSIC-UGR, Avda. Las Palmeras, nº 4, 18100 Granada, Spain; (R.F.-P.); (I.R.-C.); (C.V.-E.); (D.C.-L.)
| | - Annarita D’Urso
- Dipartimento di Scienze della Salute, Università del Piemonte Orientale, Via Solaroli, 17, 28100 Novara, Italy;
| | - Maria Prat
- Dipartimento di Scienze della Salute, Università del Piemonte Orientale, Via Solaroli, 17, 28100 Novara, Italy;
- Centro di Biotecnologie per la Ricerca Medica Applicata (BRMA), Via Solaroli 17, 28100 Novara, Italy
- Consorzio Interuniversitario per Biotecnologie (CIB), Località Padriciano 99, 34149 Area di Ricerca, Italy
- Consorzio Interuniversitario Nazionale per la Scienza e Tecnologia dei Materiali (INSTM), 28100 Novara, Italy
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13
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Szyszka K, Watras A, Wiglusz RJ. Strontium Phosphate Composite Designed to Red-Emission at Different Temperatures. MATERIALS (BASEL, SWITZERLAND) 2020; 13:E4468. [PMID: 33050186 PMCID: PMC7650610 DOI: 10.3390/ma13204468] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/08/2020] [Revised: 09/29/2020] [Accepted: 10/06/2020] [Indexed: 11/17/2022]
Abstract
Eu3+-doped Sr10(PO4)6(OH)2-Sr3(PO4)2 (SrHAp-TSP) composites were obtained via the microwave-stimulated hydrothermal method and post-heat-treated from 750 to 950 °C. Concentration of the Eu3+ ions was set to be 0.5, 1, 2, 3, 5 mol% in a ratio of the strontium ions molar content. The structural and morphological properties were investigated by X-ray powder diffraction (XRPD), scanning electron microscopy (SEM) and fourier transform infrared spectroscopy (FT-IR) techniques. The average particle size of the studied materials annealed at 750, 850 and 950 °C were counted about 100, 131 and 173 nm, respectively. The luminescence properties depending on the dopant ion concentration, heat-treatment temperature, excitation wavelength and temperature were investigated. In the emission spectra, a broad peak corresponding to the 4f65d1 → 4f7 (8S7/2) emission of Eu2+ ions as well as narrow 4f-4f transitions typical for Eu3+ ions can be observed. The luminescence intensity of the 1 mol% Eu3+:Sr10(PO4)6(OH)2-Sr3(PO4)2 was measured depending on the ambient temperature in the range of 80-550 K. The CIE 1931 (International Commission on Illumination) chromaticity diagram was determined from emission spectra measured in 80, 300 and 550 K. The reduction mechanism of the Eu3+ to the Eu2+ was explained by the charge compensation mechanism based on the Kröger-Vink-notation. The decay times were measured and the Judd-Ofelt (J-O) theory was applied to analyze the observed structural and spectroscopic features.
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Affiliation(s)
- Katarzyna Szyszka
- Institute of Low Temperature and Structure Research, Polish Academy of Sciences, Okolna 2, 50-422 Wroclaw, Poland;
| | | | - Rafal J. Wiglusz
- Institute of Low Temperature and Structure Research, Polish Academy of Sciences, Okolna 2, 50-422 Wroclaw, Poland;
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14
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Ortiz-Gómez I, Ramírez-Rodríguez GB, Capitán-Vallvey LF, Salinas-Castillo A, Delgado-López JM. Highly stable luminescent europium-doped calcium phosphate nanoparticles for creatinine quantification. Colloids Surf B Biointerfaces 2020; 196:111337. [PMID: 32949922 DOI: 10.1016/j.colsurfb.2020.111337] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2020] [Revised: 07/31/2020] [Accepted: 08/13/2020] [Indexed: 11/28/2022]
Abstract
The determination of creatinine levels is essential for the detection of renal and muscular dysfunction. Luminescent nanoparticles are emerging as fast, cheap and highly selective sensors for the detection and quantification of creatinine. Nevertheless, current nanosensors only have a short shelf life due to their poor chemical and colloidal stability, which limits their clinical functionality. In this work, we have developed a highly stable, selective and sensitive nanosensor based on europium-doped, amorphous calcium phosphate nanoparticles (Eu-ACP) for the determination of creatinine by luminescence spectroscopy. The colloidal stability of Eu-ACP nanoparticles in aqueous solutions was optimised to ensure a constant signal after up to 4 months in storage. The luminescence intensity of Eu-ACP decreased linearly with the creatinine concentration over the range of 1-120 μM (R2 = 0.995). This concentration-response relationship was used to determine creatinine levels in real urine samples resulting in good recovery percentages. Significantly, selectivity assays indicated that none of the potential interfering species provoked discernible changes in the luminescence intensity.
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Affiliation(s)
- Inmaculada Ortiz-Gómez
- Department of Analytical Chemistry, University of Granada, Faculty of Science, Av. Fuente Nueva, s/n, 18071 Granada, Spain; Unit of Excellence in Chemistry applied to Biomedicine and the Environment of the University of Granada, Spain
| | - Gloria B Ramírez-Rodríguez
- Department of Inorganic Chemistry, University of Granada, Faculty of Science, Av. Fuente Nueva, s/n, 18071 Granada, Spain; Unit of Excellence in Chemistry applied to Biomedicine and the Environment of the University of Granada, Spain.
| | - Luis F Capitán-Vallvey
- Department of Analytical Chemistry, University of Granada, Faculty of Science, Av. Fuente Nueva, s/n, 18071 Granada, Spain; Unit of Excellence in Chemistry applied to Biomedicine and the Environment of the University of Granada, Spain
| | - Alfonso Salinas-Castillo
- Department of Analytical Chemistry, University of Granada, Faculty of Science, Av. Fuente Nueva, s/n, 18071 Granada, Spain; Unit of Excellence in Chemistry applied to Biomedicine and the Environment of the University of Granada, Spain
| | - José M Delgado-López
- Department of Inorganic Chemistry, University of Granada, Faculty of Science, Av. Fuente Nueva, s/n, 18071 Granada, Spain; Unit of Excellence in Chemistry applied to Biomedicine and the Environment of the University of Granada, Spain.
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15
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Jabalera Y, Oltolina F, Prat M, Jimenez-Lopez C, Fernández-Sánchez JF, Choquesillo-Lazarte D, Gómez-Morales J. Eu-Doped Citrate-Coated Carbonated Apatite Luminescent Nanoprobes for Drug Delivery. NANOMATERIALS (BASEL, SWITZERLAND) 2020; 10:E199. [PMID: 31979272 PMCID: PMC7074876 DOI: 10.3390/nano10020199] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/29/2019] [Revised: 01/18/2020] [Accepted: 01/20/2020] [Indexed: 12/04/2022]
Abstract
In the field of Nanomedicine, there is an increasing demand for new inorganic nanophosphors with low cytotoxicity and efficient loading-release ability of drugs for applications in bioimaging and drug delivery. This work assesses the potentiality of matured Eu-doped citrate-coated carbonated apatite nanoparticles to be used as theranostic platforms, for bioimaging, as luminescent nanoprobes, and for drug delivery applications, using Doxorubicin as a model drug. The drug adsorption isotherm fits the Langmuir-Freundlich (LF) model, showing that the Eu:cit-cAp nanoparticles can carry a maximum of 0.29 ± 0.02 mg Doxo mg Eu:cit-cAp-1 (Qmax). The affinity constant KFL for this binding is 44 ± 2 mL mg-1, and the cooperativity coefficient r is 6 ± 1. The nanoparticle suspensions presented charge reversion from negative to positive after loading with Doxo as revealed by the ζ-potential versus pH characterization. The release of drug from the loaded nanoparticles was found to be strongly pH-dependent, being around 5 wt % at physiological pH 7.4 and 20 wt % at pH 5, in experiments lasting 24 h. Luminescence spectroscopic measurements of Doxo-loaded nanoparticles revealed the increase of luminescence with a decrease in the amount of adsorbed Doxo, due to the so-called inner filter effect. The nanoparticles free of Doxo were cytocompatible when interacted with two human cell lines derived respectively from a gastric carcinoma (GTL-16), and a hepatocarcinoma (Huh7), while Doxo-loaded nanoparticles displayed significant toxicity in a dose-dependent relationship. Therefore, the new nanoassemblies might have a dual function, as nanoprobes in bioimaging by detecting the fate of the nanoparticles in biological environments, and for monitoring the delivery of the drug in such environments, by measuring the rise of the luminescence provided by the desorption of Doxo.
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Affiliation(s)
- Ylenia Jabalera
- Departamento de Microbiología, Facultad de Ciencias, Universidad de Granada, Campus de Fuentenueva s/n, 18002 Granada, Spain; (Y.J.); (F.O.); (C.J.-L.)
| | - Francesca Oltolina
- Departamento de Microbiología, Facultad de Ciencias, Universidad de Granada, Campus de Fuentenueva s/n, 18002 Granada, Spain; (Y.J.); (F.O.); (C.J.-L.)
- Dipartimento di Scienze della Salute, Università del Piemonte Orientale “A. Avogadro”, Via Solaroli 17, 28100 Novara, Italy;
| | - Maria Prat
- Dipartimento di Scienze della Salute, Università del Piemonte Orientale “A. Avogadro”, Via Solaroli 17, 28100 Novara, Italy;
| | - Concepcion Jimenez-Lopez
- Departamento de Microbiología, Facultad de Ciencias, Universidad de Granada, Campus de Fuentenueva s/n, 18002 Granada, Spain; (Y.J.); (F.O.); (C.J.-L.)
| | - Jorge F. Fernández-Sánchez
- Department of Analytical Chemistry, Faculty of Sciences, University of Granada, Avda. Fuentenueva s/n, 18071 Granada, Spain;
| | - Duane Choquesillo-Lazarte
- Laboratorio de Estudios Cristalográficos, IACT-CSIC-Universidad de Granada, Avda. Las Palmeras, 4, 18100 Armilla, Spain;
| | - Jaime Gómez-Morales
- Laboratorio de Estudios Cristalográficos, IACT-CSIC-Universidad de Granada, Avda. Las Palmeras, 4, 18100 Armilla, Spain;
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16
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Lunin AV, Sokolov IL, Zelepukin IV, Zubarev IV, Yakovtseva MN, Mochalova EN, Rozenberg JM, Nikitin MP, Kolychev EL. Spindle-like MRI-active europium-doped iron oxide nanoparticles with shape-induced cytotoxicity from simple and facile ferrihydrite crystallization procedure. RSC Adv 2020; 10:7301-7312. [PMID: 35493903 PMCID: PMC9049874 DOI: 10.1039/c9ra10683a] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2019] [Accepted: 02/04/2020] [Indexed: 12/18/2022] Open
Abstract
Novel MRI active spindle-like nanoparticles prepared by a facile procedure display cytotoxicity due to synergistic combination of shape and europium content.
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Affiliation(s)
- Afanasy V. Lunin
- Moscow Institute of Physics and Technology (National Research University)
- Moscow
- Russia
| | - Ilya L. Sokolov
- Moscow Institute of Physics and Technology (National Research University)
- Moscow
- Russia
| | - Ivan V. Zelepukin
- Moscow Institute of Physics and Technology (National Research University)
- Moscow
- Russia
- Shemyakin–Ovchinnikov Institute of Bioorganic Chemistry
- Russian Academy of Sciences
| | - Ilya V. Zubarev
- Moscow Institute of Physics and Technology (National Research University)
- Moscow
- Russia
| | - Maria N. Yakovtseva
- Moscow Institute of Physics and Technology (National Research University)
- Moscow
- Russia
| | - Elizaveta N. Mochalova
- Moscow Institute of Physics and Technology (National Research University)
- Moscow
- Russia
- Prokhorov General Physics Institute of the Russian Academy of Sciences
- Moscow 119991
| | - Julian M. Rozenberg
- Moscow Institute of Physics and Technology (National Research University)
- Moscow
- Russia
| | - Maxim P. Nikitin
- Moscow Institute of Physics and Technology (National Research University)
- Moscow
- Russia
| | - Eugene L. Kolychev
- Moscow Institute of Physics and Technology (National Research University)
- Moscow
- Russia
- Prokhorov General Physics Institute of the Russian Academy of Sciences
- Moscow 119991
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17
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Wieszczycka K, Staszak K, Woźniak-Budych MJ, Jurga S. Lanthanides and tissue engineering strategies for bone regeneration. Coord Chem Rev 2019. [DOI: 10.1016/j.ccr.2019.03.003] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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18
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Pérez-Herrero E, García-García P, Gómez-Morales J, Llabrés M, Delgado A, Évora C. New injectable two-step forming hydrogel for delivery of bioactive substances in tissue regeneration. Regen Biomater 2019; 6:149-162. [PMID: 31198583 PMCID: PMC6547312 DOI: 10.1093/rb/rbz018] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2018] [Revised: 03/06/2019] [Accepted: 03/21/2019] [Indexed: 01/16/2023] Open
Abstract
A hydrogel based on chitosan, collagen, hydroxypropyl-γ-cyclodextrin and polyethylene glycol was developed and characterized. The incorporation of nano-hydroxyapatite and pre-encapsulated hydrophobic/hydrophilic model drugs diminished the porosity of hydrogel from 81.62 ± 2.25% to 69.98 ± 3.07%. Interactions between components of hydrogel, demonstrated by FTIR spectroscopy and rheology, generated a network that was able to trap bioactive components and delay the burst delivery. The thixotropic behavior of hydrogel provided adaptability to facilitate its implantation in a minimally invasive way. Release profiles from microspheres included or not in hydrogel revealed a two-phase behavior with a burst- and a controlled-release period. The same release rate for microspheres included or not in the hydrogel in the controlled-release period demonstrated that mass transfer process was controlled by internal diffusion. Effective diffusion coefficients, D eff, that describe internal diffusion inside microspheres, and mass transfer coefficients, h, i.e. the contribution of hydrogel to mass transfer, were determined using 'genetic algorithms', obtaining values between 2.64·10-15 and 6.67·10-15 m2/s for D eff and 8.50·10-10 to 3.04·10-9 m/s for h. The proposed model fits experimental data, obtaining an R 2-value ranged between 95.41 and 98.87%. In vitro culture of mesenchymal stem cells in hydrogel showed no manifestations of intolerance or toxicity, observing an intense proliferation of the cells after 7 days, being most of the scaffold surface occupied by living cells.
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Affiliation(s)
- Edgar Pérez-Herrero
- Department of Chemical Engineering and Pharmaceutical Technology, University of La Laguna, La Laguna, Tenerife, Spain
- Institute of Biomedical Technologies (ITB), Center for Biomedical Research of the Canary Islands (CIBICAN), University of La Laguna, La Laguna, Tenerife, Spain
| | - Patricia García-García
- Department of Chemical Engineering and Pharmaceutical Technology, University of La Laguna, La Laguna, Tenerife, Spain
| | - Jaime Gómez-Morales
- Laboratory of Crystallographic Studies, Andalusian Earth Sciences Institute, Spanish Research Council—University of Granada, Armilla, Granada, Spain
| | - Matias Llabrés
- Department of Chemical Engineering and Pharmaceutical Technology, University of La Laguna, La Laguna, Tenerife, Spain
- Institute of Tropical Diseases and Healthcare of the Canary Islands, University of La Laguna, La Laguna, Tenerife, Spain
| | - Araceli Delgado
- Department of Chemical Engineering and Pharmaceutical Technology, University of La Laguna, La Laguna, Tenerife, Spain
- Institute of Biomedical Technologies (ITB), Center for Biomedical Research of the Canary Islands (CIBICAN), University of La Laguna, La Laguna, Tenerife, Spain
| | - Carmen Évora
- Department of Chemical Engineering and Pharmaceutical Technology, University of La Laguna, La Laguna, Tenerife, Spain
- Institute of Biomedical Technologies (ITB), Center for Biomedical Research of the Canary Islands (CIBICAN), University of La Laguna, La Laguna, Tenerife, Spain
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19
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Bioinspired crystallization, sensitized luminescence and cytocompatibility of citrate-functionalized Ca-substituted europium phosphate monohydrate nanophosphors. J Colloid Interface Sci 2019; 538:174-186. [PMID: 30504057 DOI: 10.1016/j.jcis.2018.11.083] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2018] [Revised: 11/16/2018] [Accepted: 11/22/2018] [Indexed: 01/31/2023]
Abstract
Biocompatible nanosystems exhibiting long-lifetime (∼millisecond) luminescence features are particularly relevant in the field of bioimaging. In this study, citrate-functionalized calcium-doped europium phosphates nanophosphors of the rhabdophane type were prepared at different synthesis times by a bioinspired crystallization route, consisting in thermal decomplexing of Ca2+/Eu3+ /citrate/phosphate/carbonate solutions. The general formula of this material is CaαEu1-α(PO4)1-α(HPO4)α·nH2O, with α ranging from 0 to 0.58 and n ∼ 1. A thorough characterization of the nanoparticles has been carried out by XRD (including data processing with Topas 6.0), HR-TEM, TEM, FTIR, TG/DTA, ICP, dynamic light scattering (DLS), electrophoretic mobility, and fluorescence spectroscopy. Based on these results a crystallization mechanism involving the filling of cationic sites with Ca2+ions associated to a concomitant adjustment of the PO4/HPO4 ratio was proposed. Upon calcium doping, the aspect ratio of the nanoparticles as well as of the crystalline domains decreased and the relative luminescence intensity (R.L.I.) could be modulated. Neither the pH nor the ionic strength, nor the temperature (from 25 to 37 °C) affected significantly the R.L.I. of particles after resuspension in water, leading to rather steady luminescence features usable in a large domain of conditions. This new class of luminescent compounds has been proved to be fully cytocompatible relative to GTL-16 human carcinoma cells and showed an improved cytocompatibility as the Ca2+ content increased when contacted with the more sensitive m17. ASC murine mesenchymal stem cells. These biocompatible nanoparticles thus appear as promising new tailorable tools for biomedical applications as luminescent nanoprobes.
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20
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Kataoka T, Abe S, Tagaya M. Surface-Engineered Design of Efficient Luminescent Europium(III) Complex-Based Hydroxyapatite Nanocrystals for Rapid HeLa Cancer Cell Imaging. ACS APPLIED MATERIALS & INTERFACES 2019; 11:8915-8927. [PMID: 30730134 DOI: 10.1021/acsami.8b22740] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
We synthesized hydroxyapatite nanocrystals under the existence of tris(2,2,6,6-tetramethyl-3,5-heptanedionato)europium(III) (EuTH) complex to form inorganic/organic hybrid nanocrystal (EHA). Then, the folic acid derivative (folate N-hydroxysuccinimidyl ester (FA-NHS)) as the targeting ligand for the HeLa cancer cells was immobilized on the EHA by the mediation of both 3-aminopropyltriethoxysilane and methyltriethoxysilane molecules. Here, we investigated the photofunctions based on the interfacial interactions between the FA-NHS and EHA nanohybrids for preparing the novel bioimaging nanomaterials. As a result, the photofunctions could be changed by the FA-NHS molecular occupancy on the EHA. When the molecular occupancy ratio to the EHA surfaces is at around 3-5%, the intense luminescence from the f-f transition of the Eu3+ ions as well as the charge transfer between the EuTH-FA-NHS was observed to exhibit higher quantum efficiency. Moreover, effective dispersibility in phosphate-buffered saline was confirmed with immobilizing the positively charged FA-NHS. The cytotoxicity against the HeLa cells was also evaluated to verify whether the nanohybrids can be the candidate for cell imaging. The affinity and noncytotoxicity between the FA-NHS-immobilized EHA nanohybrids and cells were monitored for 3 days. Red luminescence from the cells could be observed, and the labels with following the cellular shapes were achieved by an additional culture time of 1 h after injecting the FA-NHS-immobilized EHA nanohybrids to the spheres, indicating the rapid bioimaging process. Therefore, this is the first successful report to describe the synthesis of inorganic-organic nanohybrid systems for controlling the EuTH-FA-NHS interactions. The photofunction of the interfacial interactions was successfully designed to provide "efficient luminescent ability" as well as "rapid targeting to the cancer cells" in one particle.
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Affiliation(s)
- Takuya Kataoka
- Department of Materials Science and Technology , Nagaoka University of Technology , Kamitomioka 1603-1 , Nagaoka , Niigata 940-2188 , Japan
| | - Shigeaki Abe
- Graduate School of Dental Medicine , Hokkaido University , Sapporo 060-8586 , Japan
| | - Motohiro Tagaya
- Department of Materials Science and Technology , Nagaoka University of Technology , Kamitomioka 1603-1 , Nagaoka , Niigata 940-2188 , Japan
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Bioinspired Mineralization of Type I Collagen Fibrils with Apatite in Presence of Citrate and Europium Ions. CRYSTALS 2018. [DOI: 10.3390/cryst9010013] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Synthetic nanostructured hybrid composites based on collagen and nanocrystalline apatites are interesting materials for the generation of scaffolds for bone tissue engineering. In this work, mineralized collagen fibrils were prepared in the presence of citrate and Eu3+. Citrate is an indispensable and essential structural/functional component of bone. Eu3+ endows the mineralized fibrils of the necessary luminescent features to be potentially employed as a diagnostic tool in biomedical applications. The assembly and mineralization of collagen were performed by the neutralization method, which consists in adding dropwise a Ca(OH)2 solution to a H3PO4 solution containing the dispersed type I collagen until neutralization. In the absence of citrate, the resultant collagen fibrils were mineralized with nanocrystalline apatites. When citrate was added in the titrant solution in a Citrate/Ca molar ratio of 2 or 1, it acted as an inhibitor of the transformation of amorphous calcium phosphate (ACP) to nanocrystalline apatite. The addition of Eu3+ and citrate in the same titrant solution lead to the formation of Eu3+–doped citrate–coated ACP/collagen fibrils. Interestingly, the relative luminescent intensity and luminescence lifetime of this latter composite were superior to those of Eu3+–doped apatite/collagen prepared in absence of citrate. The cytocompatibility tests, evaluated by the 3-(4,5-Dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide) (MTT) colorimetric assay in a dose–dependent manner on GTL–16 human gastric carcinoma cells, on MG–63 human osteosarcoma cells and on the m17.ASC, a spontaneously immortalized mouse mesenchymal stem cell clone from subcutaneous adipose tissue, show that, in general, all samples are highly cytocompatible.
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