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Palaniappan M, Selvaraj D, Kandasamy S, Kahng YH, Narayanan M, Rajendran R, Rangappan R. Architectural MCM 41 was anchored to the Schiff base Co(II) complex to enhance methylene blue dye degradation and mimic activity. ENVIRONMENTAL RESEARCH 2022; 215:114325. [PMID: 36154860 DOI: 10.1016/j.envres.2022.114325] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/14/2022] [Revised: 08/21/2022] [Accepted: 09/08/2022] [Indexed: 06/16/2023]
Abstract
A sequence of Schiff base Cobalt (II) Mobile Composite Matter 41 heterojunction (SBCo(II)-MCM 41) was prepared by post-synthetic protocols. Various characterization techniques were used to characterize the above samples and MCM 41: Morphology, functional groups, optical properties, crystalline nature, pore diameter, and binding energy by scanning electron microscope (SEM), High-resolution transition electron microscopy (HR-TEM), Fourier transform infrared spectroscopy (FTIR), Ultra Violet-Visible Spectroscopy (UV), X-ray powder diffraction (XRD), Brunauer-Emmett-Teller (BET) and X-ray Photoelectron Spectroscopy (XPS). After the encapsulation of SBCo(II) on the MCM 41, the intensity in the 100-plane in powder x-ray diffraction (XRD) decreased significantly; moreover, the light absorption behavior in UV analysis was improved. The change in the surface area and the decrease in the pore diameter of the sample were also demonstrated by the BET study. The XPS results confirmed the presence of Si, O, C, N, and Co in the SBCo(II)-MCM 41 complex. The photocatalytic performance of MCM 41 and SBCo(II)-MCM 41 materials tested by the degradation of methylene blue dye (MBD) shows that MCM 41 immobilization with SBCo(II)complex is rapidly degraded under natural sunlight irradiation. The optimized 10 mg SBCo(II)-MCM 41 catalyst concentrations showed effective enhancement with the highest efficiency of 98% achieved within 2 h compared to the other two SBCo(II)-MCM 41 concentrations. Moreover, the catalytic efficiency of SBCo(II)-MCM 41 showed a biomimetic reaction without using an oxidant, which exposed it as an effective catalyst for amine to imine conversion; it was useful in the medical field for enzymes with structural assembly.
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Affiliation(s)
- Manikandan Palaniappan
- Department of Chemistry, Bioinorganic Lab, Science Block-1, Periyar University, Salem 636 011, Tamil Nadu, India
| | - David Selvaraj
- Department of Chemistry, Bioinorganic Lab, Science Block-1, Periyar University, Salem 636 011, Tamil Nadu, India; Department of Physics Education, Chonnam National University, Gwangju 500-757, Republic of Korea.
| | - Sabariswaran Kandasamy
- Water-Energy Nexus Laboratory, Department of Environmental Engineering, University of Seoul, Seoul, 02504, Republic of Korea
| | - Yung Ho Kahng
- Department of Physics Education, Chonnam National University, Gwangju 500-757, Republic of Korea.
| | - Mathiyazhagan Narayanan
- Division of Research and Innovations, Department of Biotechnology, Saveetha School of Engineering, Saveetha Institute of Medical and Technical Science, Chennai, 602 105, Tamil Nadu, India
| | | | - Rajavel Rangappan
- Department of Chemistry, Bioinorganic Lab, Science Block-1, Periyar University, Salem 636 011, Tamil Nadu, India.
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Modified magnetic core-shell mesoporous silica nano-formulations with encapsulated quercetin exhibit anti-amyloid and antioxidant activity. J Inorg Biochem 2020; 213:111271. [PMID: 33069945 DOI: 10.1016/j.jinorgbio.2020.111271] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2020] [Revised: 09/04/2020] [Accepted: 10/02/2020] [Indexed: 12/28/2022]
Abstract
Targeted tissue drug delivery is a challenge in contemporary nanotechnologically driven therapeutic approaches, with the interplay interactions between nanohost and encapsulated drug shaping the ultimate properties of transport, release and efficacy of the drug at its destination. Prompted by the need to pursue the synthesis of such hybrid systems, a family of modified magnetic core-shell mesoporous silica nano-formulations was synthesized with encapsulated quercetin, a natural flavonoid with proven bioactivity. The new nanocarriers were produced via the sol-gel process, using tetraethoxysilane as a precursor and bearing a magnetic core of surface-modified monodispersed magnetite colloidal superparamagnetic nanoparticles, subsequently surface-modified with polyethylene glycol 3000 (PEG3k). The arising nano-formulations were evaluated for their textural and structural properties, exhibiting enhanced solubility and stability in physiological media, as evidenced by the loading capacity, entrapment efficiency results and in vitro release studies of their load. Guided by the increased bioavailability of quercetin in its encapsulated form, further evaluation of the biological activity of the magnetic as well as non-magnetic core-shell nanoparticles, pertaining to their anti-amyloid and antioxidant potential, revealed interference with the aggregation of β-amyloid peptide (Aβ) in Alzheimer's disease, reduction of Aβ cellular toxicity and minimization of Aβ-induced Reactive Oxygen Species (ROS) generation. The data indicate that the biological properties of released quercetin are maintained in the presence of the host nanocarriers. Collectively, the findings suggest that the emerging hybrid nano-formulations can function as efficient nanocarriers of hydrophobic natural flavonoids in the development of multifunctional nanomaterials toward therapeutic applications.
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Santana Vega M, Guerrero Martínez A, Cucinotta F. Facile Strategy for the Synthesis of Gold@Silica Hybrid Nanoparticles with Controlled Porosity and Janus Morphology. NANOMATERIALS (BASEL, SWITZERLAND) 2019; 9:E348. [PMID: 30832432 PMCID: PMC6473971 DOI: 10.3390/nano9030348] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/11/2019] [Revised: 02/22/2019] [Accepted: 02/26/2019] [Indexed: 12/31/2022]
Abstract
Hybrid materials prepared by encapsulation of plasmonic nanoparticles in porous silica systems are of increasing interest due to their high chemical stability and applications in optics, catalysis and biological sensing. Particularly promising is the possibility of obtaining gold@silica nanoparticles (Au@SiO₂ NPs) with Janus morphology, as the induced anisotropy can be further exploited to achieve selectivity and directionality in physical interactions and chemical reactivity. However, current methods to realise such systems rely on the use of complex procedures based on binary solvent mixtures and varying concentrations of precursors and reaction conditions, with reproducibility limited to specific Au@SiO₂ NP types. Here, we report a simple one-pot protocol leading to controlled crystallinity, pore order, monodispersity, and position of gold nanoparticles (AuNPs) within mesoporous silica by the simple addition of a small amount of sodium silicate. Using a fully water-based strategy and constant content of synthetic precursors, cetyl trimethylammonium bromide (CTAB) and tetraethyl orthosilicate (TEOS), we prepared a series of four silica systems: (A) without added silicate, (B) with added silicate, (C) with AuNPs and without added silicate, and (D) with AuNPs and with added silicate. The obtained samples were characterised by transmission electron microscopy (TEM), small angle X-ray scattering (SAXS), and UV-visible spectroscopy, and kinetic studies were carried out by monitoring the growth of the silica samples at different stages of the reaction: 1, 10, 15, 30 and 120 min. The analysis shows that the addition of sodium silicate in system B induces slower MCM-41 nanoparticle (MCM-41 NP) growth, with consequent higher crystallinity and better-defined hexagonal columnar porosity than those in system A. When the synthesis was carried out in the presence of CTAB-capped AuNPs, two different outcomes were obtained: without added silicate, isotropic mesoporous silica with AuNPs located at the centre and radial pore order (C), whereas the addition of silicate produced Janus-type Au@SiO₂ NPs (D) in the form of MCM-41 and AuNPs positioned at the silica⁻water interface. Our method was nicely reproducible with gold nanospheres of different sizes (10, 30, and 68 nm diameter) and gold nanorods (55 × 19 nm), proving to be the simplest and most versatile method to date for the realisation of Janus-type systems based on MCM-41-coated plasmonic nanoparticles.
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Affiliation(s)
- Marina Santana Vega
- School of Natural and Environmental Sciences, Newcastle University, Newcastle upon Tyne NE1 7RU, UK.
| | - Andrés Guerrero Martínez
- Departamento de Química Física, Universidad Complutense de Madrid, Avenida Complutense s/n, 28040 Madrid, Spain.
| | - Fabio Cucinotta
- School of Natural and Environmental Sciences, Newcastle University, Newcastle upon Tyne NE1 7RU, UK.
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Seca C, Ferraresi A, Phadngam S, Vidoni C, Isidoro C. Autophagy-dependent toxicity of amino-functionalized nanoparticles in ovarian cancer cells. J Mater Chem B 2019; 7:5376-5391. [DOI: 10.1039/c9tb00935c] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Polystyrene NH2-NPs induce toxicity through a differential impact on autophagy machinery in ovarian cancer cells with a different genetic background.
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Affiliation(s)
- Christian Seca
- Laboratory of Molecular Pathology and Nanobioimaging
- Department of Health Sciences
- University of Piemonte Orientale
- 28100 Novara
- Italy
| | - Alessandra Ferraresi
- Laboratory of Molecular Pathology and Nanobioimaging
- Department of Health Sciences
- University of Piemonte Orientale
- 28100 Novara
- Italy
| | - Suratchanee Phadngam
- Laboratory of Molecular Pathology and Nanobioimaging
- Department of Health Sciences
- University of Piemonte Orientale
- 28100 Novara
- Italy
| | - Chiara Vidoni
- Laboratory of Molecular Pathology and Nanobioimaging
- Department of Health Sciences
- University of Piemonte Orientale
- 28100 Novara
- Italy
| | - Ciro Isidoro
- Laboratory of Molecular Pathology and Nanobioimaging
- Department of Health Sciences
- University of Piemonte Orientale
- 28100 Novara
- Italy
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Zanoni KPS, Ravaro LP, de Camargo ASS. Host–guest luminescent materials based on highly emissive species loaded into versatile sol–gel hosts. Dalton Trans 2018; 47:12813-12826. [DOI: 10.1039/c8dt02086h] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
By mostly focusing on the findings of our group, this concise review provides insights into the development of promising new host–guest optical materials based on sol–gel assemblies of versatile hosts and highly luminescent guests.
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Affiliation(s)
- Kassio P. S. Zanoni
- Laboratory of Spectroscopy of Functional Materials
- São Carlos Institute of Physics
- University of São Paulo
- São Carlos
- Brazil
| | - Leandro P. Ravaro
- Laboratory of Spectroscopy of Functional Materials
- São Carlos Institute of Physics
- University of São Paulo
- São Carlos
- Brazil
| | - Andrea S. S. de Camargo
- Laboratory of Spectroscopy of Functional Materials
- São Carlos Institute of Physics
- University of São Paulo
- São Carlos
- Brazil
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Miletto I, Fraccarollo A, Barbero N, Barolo C, Cossi M, Marchese L, Gianotti E. Mesoporous silica nanoparticles incorporating squaraine-based photosensitizers: a combined experimental and computational approach. Dalton Trans 2018; 47:3038-3046. [DOI: 10.1039/c7dt03735j] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
A combined experimental–computational approach allowed a correlation of the homogeneity of the dispersion of squaraine dyes within mesoporous silica nanoparticles with their photosensitizer activity.
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Affiliation(s)
- Ivana Miletto
- Dipartimento di Scienze e Innovazione Tecnologica
- Università del Piemonte Orientale “Amedeo Avogadro”
- 15100 Alessandria
- Italy
| | - Alberto Fraccarollo
- Dipartimento di Scienze e Innovazione Tecnologica
- Università del Piemonte Orientale “Amedeo Avogadro”
- 15100 Alessandria
- Italy
| | - Nadia Barbero
- Dipartimento di Chimica
- Università degli Studi di Torino
- 10125 Torino
- Italy
| | - Claudia Barolo
- Dipartimento di Chimica
- Università degli Studi di Torino
- 10125 Torino
- Italy
| | - Maurizio Cossi
- Dipartimento di Scienze e Innovazione Tecnologica
- Università del Piemonte Orientale “Amedeo Avogadro”
- 15100 Alessandria
- Italy
| | - Leonardo Marchese
- Dipartimento di Scienze e Innovazione Tecnologica
- Università del Piemonte Orientale “Amedeo Avogadro”
- 15100 Alessandria
- Italy
| | - Enrica Gianotti
- Dipartimento di Scienze e Innovazione Tecnologica
- Università del Piemonte Orientale “Amedeo Avogadro”
- 15100 Alessandria
- Italy
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Smith BJ, Hernández Gallegos PA, Butsch K, Stack TDP. Metal complex assembly controlled by surface ligand distribution on mesoporous silica: Quantification using refractive index matching and impact on catalysis. J Catal 2016. [DOI: 10.1016/j.jcat.2015.11.008] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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8
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Sreejith S, Huong TTM, Borah P, Zhao Y. Organic–inorganic nanohybrids for fluorescence, photoacoustic and Raman bioimaging. Sci Bull (Beijing) 2015. [DOI: 10.1007/s11434-015-0765-4] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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9
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Mitchell KP, Sandoval S, Cortes-Mateos MJ, Alfaro J, Kummel AC, Trogler W. Self-assembled Targeting of Cancer Cells by Iron(III)-doped, Silica Nanoparticles. J Mater Chem B 2014; 2:8017-8025. [PMID: 25364507 PMCID: PMC4214387 DOI: 10.1039/c4tb01429d] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Iron(III)-doped silica nanoshells are shown to possess an in vitro cell-receptor mediated targeting functionality for endocytosis. Compared to plain silica nanoparticles, iron enriched ones are shown to be target-specific, a property that makes them potentially better vehicles for applications, such as drug delivery and tumor imaging, by making them more selective and thereby reducing the nanoparticle dose. Iron(III) in the nanoshells can interact with endogenous transferrin, a serum protein found in mammalian cell culture media, which subsequently promotes transport of the nanoshells into cells by the transferrin receptor-mediated endocytosis pathway. The enhanced uptake of the iron(III)-doped nanoshells relative to undoped silica nanoshells by a transferrin receptor-mediated pathway was established using fluorescence and confocal microscopy in an epithelial breast cancer cell line. This process was also confirmed using fluorescence activated cell sorting (FACS) measurements that show competitive blocking of nanoparticle uptake by added holo-transferrin.
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Affiliation(s)
- K.K. Pohaku Mitchell
- University of California San Diego; Dept. of Chemistry and Biochemistry Mail Code 0358, La Jolla, CA 92093
| | - S. Sandoval
- University of California San Diego; Dept. of Bioengineering, La Jolla, CA 92093
| | - M. J. Cortes-Mateos
- University of California San Diego; Moores Cancer Center, La Jolla, CA 92093
| | - J.G. Alfaro
- University of California San Diego; Dept. of Chemical Engineering, La Jolla, CA 92093
| | - A. C. Kummel
- University of California San Diego; Dept. of Chemistry and Biochemistry Mail Code 0358, La Jolla, CA 92093
| | - W.C. Trogler
- University of California San Diego; Dept. of Chemistry and Biochemistry Mail Code 0358, La Jolla, CA 92093
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Carniato F, Tei L, Phadngam S, Isidoro C, Botta M. NaGdF4Nanoparticles Coated with Functionalised Ethylenediaminetetraacetic Acid as Versatile Probes for Dual Optical and Magnetic Resonance Imaging. Chempluschem 2014; 80:503-510. [DOI: 10.1002/cplu.201402245] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2014] [Revised: 09/29/2014] [Indexed: 11/07/2022]
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Miletto I, Massa A, Ugazio E, Musso G, Caputo G, Berlier G. The protective effect of the mesoporous host on the photo oxidation of fluorescent guests: a UV-Vis spectroscopy study. Phys Chem Chem Phys 2014; 16:12172-7. [DOI: 10.1039/c4cp01143k] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
The inclusion of fluorescent molecules within the pores of an inorganic host system ensures an outstanding improvement of stability against photo oxidation under different experimental conditions.
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Affiliation(s)
- Ivana Miletto
- Università degli Studi di Torino
- Dipartimento di Chimica
- 10125 Torino, Italy
- NIS (Nanostructured Interfaces and Surfaces) Interdepartmental Centre
- Università degli Studi di Torino
| | - Annalisa Massa
- Università degli Studi di Torino
- Dipartimento di Scienza e Tecnologia del Farmaco
- 10125 Torino, Italy
| | - Elena Ugazio
- Università degli Studi di Torino
- Dipartimento di Scienza e Tecnologia del Farmaco
- 10125 Torino, Italy
| | - Giorgia Musso
- Università degli Studi di Torino
- Dipartimento di Chimica
- 10125 Torino, Italy
- NIS (Nanostructured Interfaces and Surfaces) Interdepartmental Centre
- Università degli Studi di Torino
| | - Giuseppe Caputo
- NIS (Nanostructured Interfaces and Surfaces) Interdepartmental Centre
- Università degli Studi di Torino
- 10125 Torino, Italy
- Cyanine Technologies S.p.A
- 10036 Settimo Torinese, Italy
| | - Gloria Berlier
- Università degli Studi di Torino
- Dipartimento di Chimica
- 10125 Torino, Italy
- NIS (Nanostructured Interfaces and Surfaces) Interdepartmental Centre
- Università degli Studi di Torino
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Berlier G, Gastaldi L, Ugazio E, Miletto I, Iliade P, Sapino S. Stabilization of quercetin flavonoid in MCM-41 mesoporous silica: positive effect of surface functionalization. J Colloid Interface Sci 2013; 393:109-18. [DOI: 10.1016/j.jcis.2012.10.073] [Citation(s) in RCA: 64] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2012] [Revised: 10/29/2012] [Accepted: 10/30/2012] [Indexed: 01/04/2023]
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13
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Ekkapongpisit M, Giovia A, Follo C, Caputo G, Isidoro C. Biocompatibility, endocytosis, and intracellular trafficking of mesoporous silica and polystyrene nanoparticles in ovarian cancer cells: effects of size and surface charge groups. Int J Nanomedicine 2012; 7:4147-58. [PMID: 22904626 PMCID: PMC3418080 DOI: 10.2147/ijn.s33803] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Background and methods Nanoparticles engineered to carry both a chemotherapeutic drug and a sensitive imaging probe are valid tools for early detection of cancer cells and to monitor the cytotoxic effects of anticancer treatment simultaneously. Here we report on the effect of size (10–30 nm versus 50 nm), type of material (mesoporous silica versus polystyrene), and surface charge functionalization (none, amine groups, or carboxyl groups) on biocompatibility, uptake, compartmentalization, and intracellular retention of fluorescently labeled nanoparticles in cultured human ovarian cancer cells. We also investigated the involvement of caveolae in the mechanism of uptake of nanoparticles. Results We found that mesoporous silica nanoparticles entered via caveolae-mediated endocytosis and reached the lysosomes; however, while the 50 nm nanoparticles permanently resided within these organelles, the 10 nm nanoparticles soon relocated in the cytoplasm. Naked 10 nm mesoporous silica nanoparticles showed the highest and 50 nm carboxyl-modified mesoporous silica nanoparticles the lowest uptake rates, respectively. Polystyrene nanoparticle uptake also occurred via a caveolae-independent pathway, and was negatively affected by serum. The 30 nm carboxyl-modified polystyrene nanoparticles did not localize in lysosomes and were not toxic, while the 50 nm amine-modified polystyrene nanoparticles accumulated within lysosomes and eventually caused cell death. Ovarian cancer cells expressing caveolin-1 were more likely to endocytose these nanoparticles. Conclusion These data highlight the importance of considering both the physicochemical characteristics (ie, material, size and surface charge on chemical groups) of nanoparticles and the biochemical composition of the cell membrane when choosing the most suitable nanotheranostics for targeting cancer cells.
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Affiliation(s)
- Maneerat Ekkapongpisit
- Laboratory of Molecular Pathology and Nanobioimaging, Department of Health Sciences, Università del Piemonte Orientale A. Avogadro, Via Solaroli 17, Novara, Italy
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14
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Ekkapongpisit M, Giovia A, Follo C, Caputo G, Isidoro C. Biocompatibility, endocytosis, and intracellular trafficking of mesoporous silica and polystyrene nanoparticles in ovarian cancer cells: effects of size and surface charge groups. Int J Nanomedicine 2012. [PMID: 22904626 DOI: 10.2147/ijn.s33803ijn-7-4147] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
BACKGROUND AND METHODS Nanoparticles engineered to carry both a chemotherapeutic drug and a sensitive imaging probe are valid tools for early detection of cancer cells and to monitor the cytotoxic effects of anticancer treatment simultaneously. Here we report on the effect of size (10-30 nm versus 50 nm), type of material (mesoporous silica versus polystyrene), and surface charge functionalization (none, amine groups, or carboxyl groups) on biocompatibility, uptake, compartmentalization, and intracellular retention of fluorescently labeled nanoparticles in cultured human ovarian cancer cells. We also investigated the involvement of caveolae in the mechanism of uptake of nanoparticles. RESULTS We found that mesoporous silica nanoparticles entered via caveolae-mediated endocytosis and reached the lysosomes; however, while the 50 nm nanoparticles permanently resided within these organelles, the 10 nm nanoparticles soon relocated in the cytoplasm. Naked 10 nm mesoporous silica nanoparticles showed the highest and 50 nm carboxyl-modified mesoporous silica nanoparticles the lowest uptake rates, respectively. Polystyrene nanoparticle uptake also occurred via a caveolae-independent pathway, and was negatively affected by serum. The 30 nm carboxyl-modified polystyrene nanoparticles did not localize in lysosomes and were not toxic, while the 50 nm amine-modified polystyrene nanoparticles accumulated within lysosomes and eventually caused cell death. Ovarian cancer cells expressing caveolin-1 were more likely to endocytose these nanoparticles. CONCLUSION These data highlight the importance of considering both the physicochemical characteristics (ie, material, size and surface charge on chemical groups) of nanoparticles and the biochemical composition of the cell membrane when choosing the most suitable nanotheranostics for targeting cancer cells.
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Affiliation(s)
- Maneerat Ekkapongpisit
- Laboratory of Molecular Pathology and Nanobioimaging, Department of Health Sciences, Università del Piemonte Orientale A. Avogadro, Via Solaroli 17, Novara, Italy
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Ekkapongpisit M, Giovia A, Nicotra G, Ozzano M, Caputo G, Isidoro C. Labeling and exocytosis of secretory compartments in RBL mastocytes by polystyrene and mesoporous silica nanoparticles. Int J Nanomedicine 2012; 7:1829-40. [PMID: 22605932 PMCID: PMC3352688 DOI: 10.2147/ijn.s29034] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
Background For a safe ‘in vivo’ biomedical utilization of nanoparticles, it is essential to assess not only biocompatibility, but also the potential to trigger unwanted side effects at both cellular and tissue levels. Mastocytes (cells having secretory granules containing cytokines, vasoactive amine, and proteases) play a pivotal role in the immune and inflammatory responses against exogenous toxins. Mastocytes are also recruited in the tumor stroma and are involved in tumor vascularization and growth. Aim and methods In this work, mastocyte-like rat basophilic leukemia (RBL) cells were used to investigate whether carboxyl-modified 30 nm polystyrene (PS) nanoparticles (NPs) and naked mesoporous silica (MPS) 10 nm NPs are able to label the secretory inflammatory granules, and possibly induce exocytosis of these granules. Uptake, cellular retention and localization of fluorescent NPs were analyzed by cytofluorometry and microscope imaging. Results Our findings were that: (1) secretory granules of mastocytes are accessible by NPs via endocytosis; (2) PS and MPS silica NPs label two distinct subpopulations of inflammatory granules in RBL mastocytes; and (3) PS NPs induce calcium-dependent exocytosis of inflammatory granules. Conclusion These findings highlight the value of NPs for live imaging of inflammatory processes, and also have important implications for the clinical use of PS-based NPs, due to their potential to trigger the unwanted activation of mastocytes.
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Affiliation(s)
- Maneerat Ekkapongpisit
- Laboratory of Molecular Pathology and Nanobioimaging, Department of Health Sciences, Università del Piemonte Orientale A. Avogadro, Novara, Italy
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Miletto I, Bottinelli E, Caputo G, Coluccia S, Gianotti E. Bright photoluminescent hybrid mesostructured silica nanoparticles. Phys Chem Chem Phys 2012; 14:10015-21. [DOI: 10.1039/c2cp40975e] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Functionalization of mesoporous MCM-41 with aminopropyl groups by co-condensation and grafting: a physico-chemical characterization. RESEARCH ON CHEMICAL INTERMEDIATES 2011. [DOI: 10.1007/s11164-011-0417-5] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
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Wu M, He Q, Shao Q, Zuo Y, Wang F, Ni H. Preparation and characterization of monodispersed microfloccules of TiO₂ nanoparticles with immobilized multienzymes. ACS APPLIED MATERIALS & INTERFACES 2011; 3:3300-3307. [PMID: 21812487 DOI: 10.1021/am200792a] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Microfloccules of TiO(2) nanoparticles, on which glycerol-dehydrogenase (GDH), 1,3-propanediol-oxidoreductase (PDOR), and glycerol-dehydratase (GDHt) were coimmobilized, were prepared by adsorption-flocculation with polyacrylamide (PAM). The catalytic activity of immobilized enzyme in the glycerol redox reaction system, the enzyme leakage, stabilities of pH and temperature, as well as catalytic kinetics of immobilized enzymes relative to the free enzymes were evaluated. Enzyme loading on the microfloccules as much as 104.1 mg/g TiO(2) (>90% loading efficiency) was obtained under the optimal conditions. PAM played a key role for the formation of microfloccules with relatively homogeneous distribution of size and reducing the enzyme leakage from the microfloccules during the catalysis reaction. The stabilities of GDH against pH and temperature was significantly higher than that those of free GDH. Kinetic study demonstrated that simultaneous NAD(H) regeneration was feasible in glycerol redox system catalysted by these multienzyme microfloccules and the yield of 1, 3-popanediol (1, 3-PD) was up to 11.62 g/L. These results indicated that the porous and easy-separation microfloccules of TiO(2) nanoparticles with immobilized multienzymes were efficient in term of catalytic activity as much as the free enzymes. Moreover, compared with free enzyme, the immobilized multienzymes system exhibited the broader pH, higher temperature stability.
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Affiliation(s)
- Min Wu
- School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, China.
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Yantasee W, Rutledge RD, Chouyyok W, Sukwarotwat V, Orr G, Warner CL, Warner MG, Fryxell GE, Wiacek RJ, Timchalk C, Addleman RS. Functionalized nanoporous silica for the removal of heavy metals from biological systems: adsorption and application. ACS APPLIED MATERIALS & INTERFACES 2010; 2:2749-58. [PMID: 20939537 PMCID: PMC3429124 DOI: 10.1021/am100616b] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
Surface-functionalized nanoporous silica, often referred to as self-assembled monolayers on mesoporous supports (SAMMS), has previously demonstrated the ability to serve as very effective heavy metal sorbents in a range of aquatic and environmental systems, suggesting that they may be advantageously utilized for biomedical applications such as chelation therapy. Herein we evaluate surface chemistries for heavy metal capture from biological fluids, various facets of the materials' biocompatibility, and the suitability of these materials as potential therapeutics. Of the materials tested, thiol-functionalized SAMMS proved most capable of removing selected heavy metals from biological solutions (i.e., blood, urine, etc.) Consequentially, thiol-functionalized SAMMS was further analyzed to assess the material's performance under a number of different biologically relevant conditions (i.e., variable pH and ionic strength) to gauge any potentially negative effects resulting from interaction with the sorbent, such as cellular toxicity or the removal of essential minerals. Additionally, cellular uptake studies demonstrated no cell membrane permeation by the silica-based materials generally highlighting their ability to remain cellularly inert and thus nontoxic. The results show that organic ligand functionalized nanoporous silica could be a valuable material for a range of detoxification therapies and potentially other biomedical applications.
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Bottinelli E, Miletto I, Caputo G, Coluccia S, Gianotti E. Photoactive Ru Complex Embedded in Mesostructured MCM-41 Nanoparticles. J Fluoresc 2010; 21:901-9. [DOI: 10.1007/s10895-010-0605-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2009] [Accepted: 01/29/2010] [Indexed: 10/19/2022]
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Yang H, Tang A, Ouyang J, Li M, Mann S. From Natural Attapulgite to Mesoporous Materials: Methodology, Characterization and Structural Evolution. J Phys Chem B 2010; 114:2390-8. [DOI: 10.1021/jp911516b] [Citation(s) in RCA: 115] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Huaming Yang
- Department of Inorganic Materials, School of Resources Processing and Bioengineering, Central South University, Changsha 410083, P. R. China, Centre for Organized Matter Chemistry, School of Chemistry, University of Bristol, Bristol BS8 1TS, U.K., and School of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P. R. China
| | - Aidong Tang
- Department of Inorganic Materials, School of Resources Processing and Bioengineering, Central South University, Changsha 410083, P. R. China, Centre for Organized Matter Chemistry, School of Chemistry, University of Bristol, Bristol BS8 1TS, U.K., and School of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P. R. China
| | - Jing Ouyang
- Department of Inorganic Materials, School of Resources Processing and Bioengineering, Central South University, Changsha 410083, P. R. China, Centre for Organized Matter Chemistry, School of Chemistry, University of Bristol, Bristol BS8 1TS, U.K., and School of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P. R. China
| | - Mei Li
- Department of Inorganic Materials, School of Resources Processing and Bioengineering, Central South University, Changsha 410083, P. R. China, Centre for Organized Matter Chemistry, School of Chemistry, University of Bristol, Bristol BS8 1TS, U.K., and School of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P. R. China
| | - Stephen Mann
- Department of Inorganic Materials, School of Resources Processing and Bioengineering, Central South University, Changsha 410083, P. R. China, Centre for Organized Matter Chemistry, School of Chemistry, University of Bristol, Bristol BS8 1TS, U.K., and School of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P. R. China
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