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Arsalani S, Arsalani S, Isikawa M, Guidelli EJ, Mazon EE, Ramos AP, Bakuzis A, Pavan TZ, Baffa O, Carneiro AAO. Hybrid Nanoparticles of Citrate-Coated Manganese Ferrite and Gold Nanorods in Magneto-Optical Imaging and Thermal Therapy. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:434. [PMID: 36770395 PMCID: PMC9921964 DOI: 10.3390/nano13030434] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/11/2022] [Revised: 01/11/2023] [Accepted: 01/13/2023] [Indexed: 06/18/2023]
Abstract
The development of nanomaterials has drawn considerable attention in nanomedicine to advance cancer diagnosis and treatment over the last decades. Gold nanorods (GNRs) and magnetic nanoparticles (MNPs) have been known as commonly used nanostructures in biomedical applications due to their attractive optical properties and superparamagnetic (SP) behaviors, respectively. In this study, we proposed a simple combination of plasmonic and SP properties into hybrid NPs of citrate-coated manganese ferrite (Ci-MnFe2O4) and cetyltrimethylammonium bromide-coated GNRs (CTAB-GNRs). In this regard, two different samples were prepared: the first was composed of Ci-MnFe2O4 (0.4 wt%), and the second contained hybrid NPs of Ci-MnFe2O4 (0.4 wt%) and CTAB-GNRs (0.04 wt%). Characterization measurements such as UV-Visible spectroscopy and transmission electron microscopy (TEM) revealed electrostatic interactions caused by the opposing surface charges of hybrid NPs, which resulted in the formation of small nanoclusters. The performance of the two samples was investigated using magneto-motive ultrasound imaging (MMUS). The sample containing Ci-MnFe2O4_CTAB-GNRs demonstrated a displacement nearly two-fold greater than just using Ci-MnFe2O4; therefore, enhancing MMUS image contrast. Furthermore, the preliminary potential of these hybrid NPs was also examined in magnetic hyperthermia (MH) and photoacoustic imaging (PAI) modalities. Lastly, these hybrid NPs demonstrated high stability and an absence of aggregation in water and phosphate buffer solution (PBS) medium. Thus, Ci-MnFe2O4_CTAB-GNRs hybrid NPs can be considered as a potential contrast agent in MMUS and PAI and a heat generator in MH.
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Affiliation(s)
- Saeideh Arsalani
- Department of Physics, FFCLRP, University of São Paulo, Av. Bandeirantes 3900, Ribeirão Preto 14040-901, São Paulo, Brazil
| | - Soudabeh Arsalani
- Physikalisch-Technische Bundesanstalt, Abbestrasse 2-12, D-10587 Berlin, Germany
| | - Mileni Isikawa
- Department of Physics, FFCLRP, University of São Paulo, Av. Bandeirantes 3900, Ribeirão Preto 14040-901, São Paulo, Brazil
| | - Eder J. Guidelli
- Department of Physics, FFCLRP, University of São Paulo, Av. Bandeirantes 3900, Ribeirão Preto 14040-901, São Paulo, Brazil
| | - Ernesto E. Mazon
- Department of Physics, FFCLRP, University of São Paulo, Av. Bandeirantes 3900, Ribeirão Preto 14040-901, São Paulo, Brazil
| | - Ana Paula Ramos
- Department of Chemistry, FFCLRP, University of São Paulo, Av. Bandeirantes 3900, Ribeirão Preto 14040-901, São Paulo, Brazil
| | - Andris Bakuzis
- Institute of Physics and CNanoMed, Federal University of Goiás, Goiânia 74690-900, São Paulo, Brazil
| | - Theo Z. Pavan
- Department of Physics, FFCLRP, University of São Paulo, Av. Bandeirantes 3900, Ribeirão Preto 14040-901, São Paulo, Brazil
| | - Oswaldo Baffa
- Department of Physics, FFCLRP, University of São Paulo, Av. Bandeirantes 3900, Ribeirão Preto 14040-901, São Paulo, Brazil
| | - Antonio A. O. Carneiro
- Department of Physics, FFCLRP, University of São Paulo, Av. Bandeirantes 3900, Ribeirão Preto 14040-901, São Paulo, Brazil
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Long-Term Clearance and Biodistribution of Magnetic Nanoparticles Assessed by AC Biosusceptometry. MATERIALS 2022; 15:ma15062121. [PMID: 35329574 PMCID: PMC8948936 DOI: 10.3390/ma15062121] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/19/2021] [Revised: 12/08/2021] [Accepted: 12/16/2021] [Indexed: 12/12/2022]
Abstract
Once administered in an organism, the physiological parameters of magnetic nanoparticles (MNPs) must be addressed, as well as their possible interactions and retention and elimination profiles. Alternating current biosusceptometry (ACB) is a biomagnetic detection system used to detect and quantify MNPs. The aims of this study were to evaluate the biodistribution and clearance of MNPs profiles through long-time in vivo analysis and determine the elimination time carried out by the association between the ACB system and MnFe2O4 nanoparticles. The liver, lung, spleen, kidneys, and heart and a blood sample were collected for biodistribution analysis and, for elimination analysis, and over 60 days. During the period analyzed, the animal’s feces were also collectedd. It was possible to notice a higher uptake by the liver and the spleen due to their characteristics of retention and uptake. In 60 days, we observed an absence of MNPs in the spleen and a significant decay in the liver. We also determined the MNPs’ half-life through the liver and the spleen elimination. The data indicated a concentration decay profile over the 60 days, which suggests that, in addition to elimination via feces, there is an endogenous mechanism of metabolization or possible agglomeration of MNPs, resulting in loss of ACB signal intensity.
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Manganese Ferrite Nanoparticles (MnFe 2O 4): Size Dependence for Hyperthermia and Negative/Positive Contrast Enhancement in MRI. NANOMATERIALS 2020; 10:nano10112297. [PMID: 33233590 PMCID: PMC7699708 DOI: 10.3390/nano10112297] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/15/2020] [Revised: 10/28/2020] [Accepted: 11/06/2020] [Indexed: 12/13/2022]
Abstract
We synthesized manganese ferrite (MnFe2O4) nanoparticles of different sizes by varying pH during chemical co-precipitation procedure and modified their surfaces with polysaccharide chitosan (CS) to investigate characteristics of hyperthermia and magnetic resonance imaging (MRI). Structural features were analyzed by X-ray diffraction (XRD), high-resolution transmission electron microscopy (TEM), selected area diffraction (SAED) patterns, and Mössbauer spectroscopy to confirm the formation of superparamagnetic MnFe2O4 nanoparticles with a size range of 5–15 nm for pH of 9–12. The hydrodynamic sizes of nanoparticles were less than 250 nm with a polydispersity index of 0.3, whereas the zeta potentials were higher than 30 mV to ensure electrostatic repulsion for stable colloidal suspension. MRI properties at 7T demonstrated that transverse relaxation (T2) doubled as the size of CS-coated MnFe2O4 nanoparticles tripled in vitro. However, longitudinal relaxation (T1) was strongest for the smallest CS-coated MnFe2O4 nanoparticles, as revealed by in vivo positive contrast MRI angiography. Cytotoxicity assay on HeLa cells showed CS-coated MnFe2O4 nanoparticles is viable regardless of ambient pH, whereas hyperthermia studies revealed that both the maximum temperature and specific loss power obtained by alternating magnetic field exposure depended on nanoparticle size and concentration. Overall, these results reveal the exciting potential of CS-coated MnFe2O4 nanoparticles in MRI and hyperthermia studies for biomedical research.
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Líšková S, Bališ P, Mičurová A, Kluknavský M, Okuliarová M, Puzserová A, Škrátek M, Sekaj I, Maňka J, Valovič P, Bernátová I. Effect of iron oxide nanoparticles on vascular function and nitric oxide production in acute stress-exposed rats. Physiol Res 2020; 69:1067-1083. [PMID: 33129250 DOI: 10.33549/physiolres.934567] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
We investigated whether polyethylene glycol-coated Fe3O4 nanoparticles (IONs), acute stress and their combination modifies vascular functions, nitric oxide synthase (NOS) activity, mean arterial pressure (MAP) as well as hepcidin and ferritin H gene expressions in Wistar-Kyoto rats. Rats were divided into control, ION-treated rats (1 mg Fe/kg i.v.), repeated acute air-jet stress-exposed rats and IONs-and-stress co-exposed rats. Maximal acetylcholine (ACh)-induced and sodium nitroprusside (SNP)-induced relaxations in the femoral arteries did not differ among the groups. IONs alone significantly elevated the N?-nitro-L-arginine methyl ester (L-NAME)-sensitive component of ACh-induced relaxation and reduced the sensitivity of vascular smooth muscle cells to SNP. IONs alone also elevated NOS activity in the brainstem and hypothalamus, reduced NOS activity in the kidneys and had no effect in the liver. Acute stress alone failed to affect vascular function and NOS activities in all the tissues investigated but it elevated ferritin H expression in the liver. In the ION-and-stress group, NOS activity was elevated in the kidneys and liver, but reduced in the brainstem and hypothalamus vs. IONs alone. IONs also accentuated air-jet stress-induced MAP responses vs. stress alone. Interestingly, stress reduced ION-originated iron content in blood and liver while it was elevated in the kidneys. In conclusion, the results showed that 1) acute administration of IONs altered vascular function, increased L-NAME-sensitive component of ACh-induced relaxation and had tissue-dependent effects on NOS activity, 2) ION effects were considerably reduced by co-exposure to repeated acute stress, likely related to decrease of ION-originated iron in blood due to elevated decomposition and/or excretion.
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Affiliation(s)
- S Líšková
- Institute of Pharmacology and Clinical Pharmacology, Faculty of Medicine, Comenius University, Bratislava, Slovakia, , and Institute of Normal and Pathological Physiology, Centre of Experimental Medicine, Slovak Academy of Sciences, Bratislava, Slovakia,
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Costa F, Jardim KV, Palomec-Garfias AF, Cáceres-Vélez PR, Chaker JA, Medeiros AMM, Moya SE, Sousa MH. Highly Magnetizable Crosslinked Chloromethylated Polystyrene-Based Nanocomposite Beads for Selective Molecular Separation of 4-Aminobenzoic Acid. ACS OMEGA 2019; 4:5640-5649. [PMID: 31459718 PMCID: PMC6648915 DOI: 10.1021/acsomega.9b00142] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/15/2019] [Accepted: 03/06/2019] [Indexed: 06/10/2023]
Abstract
In this work, we describe the preparation and characterization of highly magnetizable chloromethylated polystyrene-based nanocomposite beads. For synthesis optimization, acid-resistant core-shelled maghemite (γ-Fe2O3) nanoparticles are coated with sodium oleate and directly incorporated into the organic medium during a suspension polymerization process. A crosslinking agent, ethylene glycol dimethacrylate, is used for copolymerization with 4-vinylbenzyl chloride to increase the resistance of the microbeads against leaching. X-ray diffraction, inductively coupled plasma atomic emission spectroscopy, thermogravimetric analysis, scanning electron microscopy, transmission electron microscopy, and optical microscopy are used for bead characterization. The beads form a magnetic composite consisting of ∼500 nm-sized crosslinked polymeric microspheres, embedding ∼8 nm γ-Fe2O3 nanoparticles. This nanocomposite shows large room temperature magnetization (∼24 emu/g) due to the high content of maghemite (∼45 wt %) and resistance against leaching even in acidic media. Moreover, the presence of superficial chloromethyl groups is probed by Fourier transform infrared and X-ray photoelectron spectroscopy. The nanocomposite beads displaying chloromethyl groups can be used to selectively remove aminated compounds that are adsorbed on the beads, as is shown here for the molecular separation of 4-aminobenzoic acid from a mixture with benzoic acid. The high magnetization of the composite beads makes them suitable for in situ molecular separations in environmental and biological applications.
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Affiliation(s)
- Fábio
T. Costa
- Green
Nanotechnology Group, Universidade de Brasília, Brasília DF 72220-900, Brazil
| | - Katiúscia V. Jardim
- Green
Nanotechnology Group, Universidade de Brasília, Brasília DF 72220-900, Brazil
| | | | | | - Juliano A. Chaker
- Green
Nanotechnology Group, Universidade de Brasília, Brasília DF 72220-900, Brazil
| | - Anderson M. M.
S. Medeiros
- Laboratoire
de Chimie des Polymères Organiques, Universitè de Bordeaux, UMR5629, CNRS—Bordeaux INP—ENSCBP, 16 Avenue Pey-Berland, 33607 Pessac, Cedex, France
| | - Sergio E. Moya
- Soft
Matter Nanotechnology Laboratory, CIC biomaGUNE, San Sebastián, Guip 20009, Spain
| | - Marcelo H. Sousa
- Green
Nanotechnology Group, Universidade de Brasília, Brasília DF 72220-900, Brazil
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Neto LMM, Zufelato N, de Sousa-Júnior AA, Trentini MM, da Costa AC, Bakuzis AF, Kipnis A, Junqueira-Kipnis AP. Specific T cell induction using iron oxide based nanoparticles as subunit vaccine adjuvant. Hum Vaccin Immunother 2018; 14:2786-2801. [PMID: 29913109 DOI: 10.1080/21645515.2018.1489192] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/09/2023] Open
Abstract
Metal-based nanoparticles (NPs) stimulate innate immunity; however, they have never been demonstrated to be capable of aiding the generation of specific cellular immune responses. Therefore, our objective was to evaluate whether iron oxide-based NPs have adjuvant properties in generating cellular Th1, Th17 and TCD8 (Tc1) immune responses. For this purpose, a fusion protein (CMX) composed of Mycobacterium tuberculosis antigens was used as a subunit vaccine. Citrate-coated MnFe2O4 NPs were synthesized by co-precipitation and evaluated by transmission electron microscopy. The vaccine was formulated by homogenizing NPs with the recombinant protein, and protein corona formation was determined by dynamic light scattering and field-emission scanning electron microscopy. The vaccine was evaluated for the best immunization route and strategy using subcutaneous and intranasal routes with 21-day intervals between immunizations. When administered subcutaneously, the vaccine generated specific CD4+IFN-γ+ (Th1) and CD8+IFN-γ+ responses. Intranasal vaccination induced specific Th1, Th17 (CD4+IL-17+) and Tc1 responses, mainly in the lungs. Finally, a mixed vaccination strategy (2 subcutaneous injections followed by one intranasal vaccination) induced a Th1 (in the spleen and lungs) and splenic Tc1 response but was not capable of inducing a Th17 response in the lungs. This study shows for the first time a subunit vaccine with iron oxide based NPs as an adjuvant that generated cellular immune responses (Th1, Th17 and TCD8), thereby exhibiting good adjuvant qualities. Additionally, the immune response generated by the subcutaneous administration of the vaccine diminished the bacterial load of Mtb challenged animals, showing the potential for further improvement as a vaccine against tuberculosis.
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Affiliation(s)
| | - Nicholas Zufelato
- b Instituto de Física, Universidade Federal de Goiás (IF-UFG) , Brasil
| | | | - Monalisa Martins Trentini
- a Instituto de Patologia Tropical e Saúde Pública, Universidade Federal de Goiás (IPTSP-UFG) , Brasil
| | - Adeliane Castro da Costa
- a Instituto de Patologia Tropical e Saúde Pública, Universidade Federal de Goiás (IPTSP-UFG) , Brasil
| | | | - André Kipnis
- a Instituto de Patologia Tropical e Saúde Pública, Universidade Federal de Goiás (IPTSP-UFG) , Brasil
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Rodrigues HF, Capistrano G, Mello FM, Zufelato N, Silveira-Lacerda E, Bakuzis AF. Precise determination of the heat delivery duringin vivomagnetic nanoparticle hyperthermia with infrared thermography. Phys Med Biol 2017; 62:4062-4082. [DOI: 10.1088/1361-6560/aa6793] [Citation(s) in RCA: 55] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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Próspero AG, Quini CC, Bakuzis AF, Fidelis-de-Oliveira P, Moretto GM, Mello FPF, Calabresi MFF, Matos RVR, Zandoná EA, Zufelato N, Oliveira RB, Miranda JRA. Real-time in vivo monitoring of magnetic nanoparticles in the bloodstream by AC biosusceptometry. J Nanobiotechnology 2017; 15:22. [PMID: 28327191 PMCID: PMC5361818 DOI: 10.1186/s12951-017-0257-6] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2016] [Accepted: 03/10/2017] [Indexed: 12/21/2022] Open
Abstract
Background We introduce and demonstrate that the AC biosusceptometry (ACB) technique enables real-time monitoring of magnetic nanoparticles (MNPs) in the bloodstream. We present an ACB system as a simple, portable, versatile, non-invasive, and accessible tool to study pharmacokinetic parameters of MNPs, such as circulation time, in real time. We synthesized and monitored manganese doped iron oxide nanoparticles in the bloodstream of Wistar rats using two different injection protocols. Aiming towards a translational approach, we also simultaneously evaluated cardiovascular parameters, including mean arterial pressure, heart rate, and episodes of arrhythmia in order to secure the well-being of all animals. Results We found that serial injections increased the circulation time compared with single injections. Immediately after each injection, we observed a transitory drop in arterial pressure, a small drop in heart rate, and no episodes of arrhythmia. Although some cardiovascular effects were observed, they were transitory and easily recovered in both protocols. Conclusions These results indicate that the ACB system may be a valuable tool for in vivo, real-time MNP monitoring that allows associations with other techniques, such as pulsatile arterial pressure and electrocardiogram recordings, helping ensuring the protocol safety, which is a fundamental step towards clinical applications. Electronic supplementary material The online version of this article (doi:10.1186/s12951-017-0257-6) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- André G Próspero
- Biosciences Institute of Botucatu, São Paulo State University, Botucatu, São Paulo, Brazil
| | - Caio C Quini
- Biosciences Institute of Botucatu, São Paulo State University, Botucatu, São Paulo, Brazil
| | - Andris F Bakuzis
- Physics Institute, Federal University of Goiás, Goiânia, Goiás, Brazil. .,Instituto de Física-Universidade Federal de Goiás, Goiânia, GO, 74690-900, Brazil.
| | | | - Gustavo M Moretto
- Biosciences Institute of Botucatu, São Paulo State University, Botucatu, São Paulo, Brazil
| | - Fábio P F Mello
- Biosciences Institute of Botucatu, São Paulo State University, Botucatu, São Paulo, Brazil
| | - Marcos F F Calabresi
- Biosciences Institute of Botucatu, São Paulo State University, Botucatu, São Paulo, Brazil
| | - Ronaldo V R Matos
- Biosciences Institute of Botucatu, São Paulo State University, Botucatu, São Paulo, Brazil
| | - Ednaldo A Zandoná
- Biosciences Institute of Botucatu, São Paulo State University, Botucatu, São Paulo, Brazil
| | - Nícholas Zufelato
- Physics Institute, Federal University of Goiás, Goiânia, Goiás, Brazil
| | - Ricardo B Oliveira
- Ribeirão Preto School of Medicine, São Paulo University, Ribeirão Prêto, São Paulo, Brazil
| | - José R A Miranda
- Biosciences Institute of Botucatu, São Paulo State University, Botucatu, São Paulo, Brazil
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Ahmad F, Zhou Y. Pitfalls and Challenges in Nanotoxicology: A Case of Cobalt Ferrite (CoFe 2O 4) Nanocomposites. Chem Res Toxicol 2017; 30:492-507. [PMID: 28118545 DOI: 10.1021/acs.chemrestox.6b00377] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Nanotechnology is developing at a rapid pace with promises of a brilliant socio-economic future. The apprehensions of vivid future involvement with nanotechnology make nanoobjects ubiquitous in the macroscopic world of humans. Nanotechnology helps us to visualize the new mysterious horizons in engineering, sophisticated electronics, environmental remediation, biosensing, and nanomedicine. In all these hotspots, cobalt ferrite (CoFe) nanoparticles (NPs) are outstanding contestants because of their astonishing controllable physicochemical and magnetic properties with ease of synthesis methods. The extensive use of CoFe NPs may result in CoFe NPs easily penetrating the human body unintentionally by ingestion, inhalation, adsorption, etc. and intentionally being instilled into the human body during biomedical diagnostics and treatment. After being housed in the human body, it might induce oxidative stress, cytotoxicity, genotoxicity, inflammation, apoptosis, and developmental, metabolic and hormonal abnormalities. In this review, we compiled the toxicity knowledge of CoFe NPs aimed to provide the safe usage of this breed of nanomaterials.
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Affiliation(s)
- Farooq Ahmad
- College of Chemical Engineering, Zhejiang University of Technology , Hangzhou 310032, China.,State Key Laboratory of Metal Matrix Composites, School of Material Science and Engineering, Shanghai Jiao Tong University , 800 Dongchuan Road, Shanghai 200240, China
| | - Ying Zhou
- College of Chemical Engineering, Zhejiang University of Technology , Hangzhou 310032, China.,Research Center of Analysis and Measurement, Zhejiang University of Technology , 18 Chaowang Road, Hangzhou 310032, China
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Lopez-Abarrategui C, Figueroa-Espi V, Lugo-Alvarez MB, Pereira CD, Garay H, Barbosa JA, Falcão R, Jiménez-Hernández L, Estévez-Hernández O, Reguera E, Franco OL, Dias SC, Otero-Gonzalez AJ. The intrinsic antimicrobial activity of citric acid-coated manganese ferrite nanoparticles is enhanced after conjugation with the antifungal peptide Cm-p5. Int J Nanomedicine 2016; 11:3849-57. [PMID: 27563243 PMCID: PMC4984987 DOI: 10.2147/ijn.s107561] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
Abstract
Diseases caused by bacterial and fungal pathogens are among the major health problems in the world. Newer antimicrobial therapies based on novel molecules urgently need to be developed, and this includes the antimicrobial peptides. In spite of the potential of antimicrobial peptides, very few of them were able to be successfully developed into therapeutics. The major problems they present are molecule stability, toxicity in host cells, and production costs. A novel strategy to overcome these obstacles is conjugation to nanomaterial preparations. The antimicrobial activity of different types of nanoparticles has been previously demonstrated. Specifically, magnetic nanoparticles have been widely studied in biomedicine due to their physicochemical properties. The citric acid-modified manganese ferrite nanoparticles used in this study were characterized by high-resolution transmission electron microscopy, which confirmed the formation of nanocrystals of approximately 5 nm diameter. These nanoparticles were able to inhibit Candida albicans growth in vitro. The minimal inhibitory concentration was 250 µg/mL. However, the nanoparticles were not capable of inhibiting Gram-negative bacteria (Escherichia coli) or Gram-positive bacteria (Staphylococcus aureus). Finally, an antifungal peptide (Cm-p5) from the sea animal Cenchritis muricatus (Gastropoda: Littorinidae) was conjugated to the modified manganese ferrite nanoparticles. The antifungal activity of the conjugated nanoparticles was higher than their bulk counterparts, showing a minimal inhibitory concentration of 100 µg/mL. This conjugate proved to be nontoxic to a macrophage cell line at concentrations that showed antimicrobial activity.
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Affiliation(s)
| | - Viviana Figueroa-Espi
- Lab of Structural Analysis, Institute of Materials Science and Technology, Havana University, La Habana, Havana, Cuba
| | | | - Caroline D Pereira
- Center for Biochemical and Proteomics Analyses, Catholic University of Brasilia, Brasilia, Brazil
| | - Hilda Garay
- Laboratory of Peptide Analysis and Synthesis, Center of Genetic Engineering and Biotechnology, La Habana, Havana, Cuba
| | - João Arg Barbosa
- Department of Cellular Biology, Laboratory of Biophysics, Institute of Biological Science, University of Brasilia
| | - Rosana Falcão
- Brazilian Agricultural Research Corporation (EMBRAPA), Center of Genetic Resources and Biotechnology (CENARGEN), Brasilia DF, Brazil
| | - Linnavel Jiménez-Hernández
- Lab of Structural Analysis, Institute of Materials Science and Technology, Havana University, La Habana, Havana, Cuba
| | - Osvaldo Estévez-Hernández
- Lab of Structural Analysis, Institute of Materials Science and Technology, Havana University, La Habana, Havana, Cuba; Instituto de Ciencia y Tecnología de Materiales (IMRE), Universidad de La Habana, Cuba
| | - Edilso Reguera
- Research Center for Applied Science and Advanced Technology (CICATA), National Polytechnic Institute (IPN), Lagaria Unit, Mexico DF, Mexico
| | - Octavio L Franco
- Center for Biochemical and Proteomics Analyses, Catholic University of Brasilia, Brasilia, Brazil; S-Inova Biotech, Post-Graduate in Biotechnology, Universidade Catolica Dom Bosco, Campo Grande, Brazil
| | - Simoni C Dias
- Center for Biochemical and Proteomics Analyses, Catholic University of Brasilia, Brasilia, Brazil
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