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Sabourian P, Frounchi M, Kiani S, Mashayekhan S, Kheirabadi MZ, Heydari Y, Ashraf SS. Targeting reactive astrocytes by pH-responsive ligand-bonded polymeric nanoparticles in spinal cord injury. Drug Deliv Transl Res 2023; 13:1842-1855. [PMID: 36689118 DOI: 10.1007/s13346-023-01300-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/15/2023] [Indexed: 01/24/2023]
Abstract
In spinal cord injuries, axonal regeneration decreases with the activation of astrocytes followed by glial scar formation. Targeting reactive astrocytes has been recently performed by unsafe viral vectors to inhibit gliosis. In the current study, biocompatible polymeric nanoparticles were selected as an alternative for viruses to target reactive astrocytes for further drug/gene delivery applications. Lipopolysaccharide-bonded chitosan-quantum dots/poly acrylic acid nanoparticles were prepared by ionic gelation method to target reactive astrocytes both in vitro and in spinal cord-injured rats. Owing to their biocompatibility and pH-responsive behavior, chitosan and poly acrylic acid were the main components of nanoparticles. Nanoparticles were then chemically labeled with quantum dots to track the cell uptake and electrostatically interacted with lipopolysaccharide as a targeting ligand. In vitro and in vivo studies were performed in triplicate and all data were expressed as the mean ± the standard error of the mean. Smart nanoparticles with optimum size (61.9 nm) and surface charge (+ 12.5 mV) successfully targeted primary reactive astrocytes extracted from the rat cerebral cortex. In vitro studies represented high cell viability (96%) in the exposure of biocompatible nanoparticles. The pH-responsive behavior of nanoparticles was proved by their internalization into the cell's nuclei due to the swelling and endosomal escape of nanoparticles in acidic pH. In vivo studies demonstrated higher transfection of nanoparticles into reactive astrocytes compared to the neurons. pH-responsive ligand-bonded chitosan-based nanoparticles are good alternatives for viral vectors in targeted delivery applications for the treatment of spinal cord injuries.
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Affiliation(s)
- Parinaz Sabourian
- Department of Chemical and Petroleum Engineering, Sharif University of Technology, Azadi Avenue, Tehran, Iran
| | - Masoud Frounchi
- Department of Chemical and Petroleum Engineering, Sharif University of Technology, Azadi Avenue, Tehran, Iran.
| | - Sahar Kiani
- Department of Brain and Cognitive Sciences, Cell Science Research Center, ROYAN Institute for Stem Cell Biology and Technology, ACECR, Tehran, Iran
- Department of Stem Cell and Developmental Biology, Cell Science Research Center, ROYAN Institute for Stem Cell Biology and Technology, ACECR, Tehran, Iran
| | - Shohreh Mashayekhan
- Department of Chemical and Petroleum Engineering, Sharif University of Technology, Azadi Avenue, Tehran, Iran
| | - Masoumeh Zarei Kheirabadi
- Department of Brain and Cognitive Sciences, Cell Science Research Center, ROYAN Institute for Stem Cell Biology and Technology, ACECR, Tehran, Iran
- Department of Stem Cell and Developmental Biology, Cell Science Research Center, ROYAN Institute for Stem Cell Biology and Technology, ACECR, Tehran, Iran
| | - Yasaman Heydari
- Department of Brain and Cognitive Sciences, Cell Science Research Center, ROYAN Institute for Stem Cell Biology and Technology, ACECR, Tehran, Iran
- Department of Stem Cell and Developmental Biology, Cell Science Research Center, ROYAN Institute for Stem Cell Biology and Technology, ACECR, Tehran, Iran
| | - Seyed Sajad Ashraf
- Department of Chemical and Petroleum Engineering, Sharif University of Technology, Azadi Avenue, Tehran, Iran
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Grzebieniarz W, Nowak N, Khachatryan G, Krzan M, Krystyjan M, Kosiński J, Khachatryan K. The Preparation and Characterization of Quantum Dots in Polysaccharide Carriers (Starch/Chitosan) as Elements of Smart Packaging and Their Impact on the Growth of Microorganisms in Food. MATERIALS (BASEL, SWITZERLAND) 2021; 14:7732. [PMID: 34947326 PMCID: PMC8704001 DOI: 10.3390/ma14247732] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/06/2021] [Revised: 12/11/2021] [Accepted: 12/12/2021] [Indexed: 12/26/2022]
Abstract
Nanocomposite materials are increasingly commonly used to ensure food safety and quality. Thanks to their unique properties, stemming from the presence of nanoparticles, they are used to develop advanced sensors and biosensors, e.g., for various harmful substances, heavy metals, microorganism growth, and environmental changes in food products. The aim of this study is to produce novel films based on natural resources-potato starch and chitosan-incorporating generated quantum dots of zinc sulfide and cadmium sulfide. The biocomposites were subjected to the following assays: FTIR spectroscopy, UV-VIS spectroscopy, photoluminescence spectroscopy, and SEM/TEM spectroscopy. Their mechanical properties were also analyzed, a colorimetric analysis was performed, and the water content, solubility, and water absorption capacity were determined. A storage test was also performed, using poultry meat covered with the produced films, to assess the microbiological quality. The results confirmed the presence of the quantum dots in the starch-chitosan matrix. The unique optical properties of the films were also demonstrated. It was shown that the composites with nanoparticles limited the growth of selected microorganisms in poultry meat. The food storage time was found to have an impact on the fluorescent properties of the composites. The results point to the possibility of using the produced films as active and smart packaging.
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Affiliation(s)
- Wiktoria Grzebieniarz
- Faculty of Food Technology, University of Agriculture in Krakow, Balicka Str. 122, 30-149 Krakow, Poland; (W.G.); (N.N.); (M.K.); (J.K.); (K.K.)
| | - Nikola Nowak
- Faculty of Food Technology, University of Agriculture in Krakow, Balicka Str. 122, 30-149 Krakow, Poland; (W.G.); (N.N.); (M.K.); (J.K.); (K.K.)
| | - Gohar Khachatryan
- Faculty of Food Technology, University of Agriculture in Krakow, Balicka Str. 122, 30-149 Krakow, Poland; (W.G.); (N.N.); (M.K.); (J.K.); (K.K.)
| | - Marcel Krzan
- Jerzy Haber Institute of Catalysis and Surface Chemistry, Polish Academy of Sciences, Niezapominajek Str. 8, 30-239 Krakow, Poland
| | - Magdalena Krystyjan
- Faculty of Food Technology, University of Agriculture in Krakow, Balicka Str. 122, 30-149 Krakow, Poland; (W.G.); (N.N.); (M.K.); (J.K.); (K.K.)
| | - Jarosław Kosiński
- Faculty of Food Technology, University of Agriculture in Krakow, Balicka Str. 122, 30-149 Krakow, Poland; (W.G.); (N.N.); (M.K.); (J.K.); (K.K.)
| | - Karen Khachatryan
- Faculty of Food Technology, University of Agriculture in Krakow, Balicka Str. 122, 30-149 Krakow, Poland; (W.G.); (N.N.); (M.K.); (J.K.); (K.K.)
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Prakash B, Singh A, Katoch V, Sharma M, Panda JJ, Sharma J, Ganguli AK. Flow synthesis and in-channel photocatalysis of antimicrobially active ZnS quantum dots using an efficient planar PMMA microreactor. NANO EXPRESS 2020. [DOI: 10.1088/2632-959x/abcadf] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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Singh AK, Yadav AN, Srivastav S, Jaiswal RK, Srivastava A, Mondal AC, Singh K. CdSe- Reduced graphene oxide nanocomposite toxicity alleviation via V 2O 5 shell formation over CdSe core: in vivo and in vitro studies. NANOTECHNOLOGY 2020; 31:415101. [PMID: 32311687 DOI: 10.1088/1361-6528/ab8b0f] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
The present article demonstrates the synthesis of the nanocomposite of reduced graphene oxide (rGO) with CdSe and CdSe/V2O5 core/shell quantum dots by a two-step facile synthesis approach and subsequently studies their relative biocompatibility in different cells. Various characterization techniques have been applied including transmission electron microscopy (TEM), an x-ray diffractometer (XRD) and Raman spectroscopy to confirm the successful formation of CdSe-rGO and CdSe/V2O5-rGO nanocomposites. The average sizes of CdSe and CdSe/V2O5 QDs have found to be ∼3 and 5.5 nm, respectively with a good dispersion over the surface of rGO nanosheets. A crystal phase change has occurred during the formation of the V2O5 shell over the surface of CdSe QDs and confirmed through XRD. Raman spectroscopy has shown some useful insight of the surface state of CdSe and consequent changes in the surface with V2O5 shell growth. Further, MTT and cell growth assays have been performed to analyze their biocompatibility in A549 and Hela cells with various concentrations of as-synthesized materials. Our results demonstrate the toxicity of CdSe-rGO nanocomposite to be substantially reduced by the growth of the V2O5 shell. The in vivo studies in Drosophila show a remarkable decrease in the reactive oxygen species (ROS) and apoptosis levels for a CdSe/V2O5-rGO composite as compared to a CdSe-rGO nanocomposite, which paves a promising pathway for the CdSe/V2O5-rGO nanocomposite to be used as an efficient biocompatible material.
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Affiliation(s)
- Ashwani Kumar Singh
- Center for Semiconductor and Nanotechnology Components, State University of Campinas, UNICAMP, Sao Paulo, Brazil. School of Physical Sciences, Jawaharlal Nehru University, New Delhi, India
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Ghanaatian Jobzari H, Iranmanesh P, Sabet M, Saeednia S. Effect of synthesis method and chemical reagents on the structural parameters, particle size, and optical and photoluminescence properties of ZnS nanostructures. LUMINESCENCE 2019; 34:689-698. [DOI: 10.1002/bio.3650] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2018] [Revised: 03/11/2019] [Accepted: 05/04/2019] [Indexed: 11/11/2022]
Affiliation(s)
| | - Parvaneh Iranmanesh
- Department of Physics, Faculty of ScienceVali‐e‐Asr University of Rafsanjan Rafsanjan Iran
| | - Mohammad Sabet
- Department of Chemistry, Faculty of ScienceVali‐e‐Asr University of Rafsanjan Rafsanjan Iran
| | - Samira Saeednia
- Department of Chemistry, Faculty of ScienceVali‐e‐Asr University of Rafsanjan Rafsanjan Iran
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Slyusarenko N, Gerasimova M, Plotnikov A, Gaponik N, Slyusareva E. Photoluminescence properties of self-assembled chitosan-based composites containing semiconductor nanocrystals. Phys Chem Chem Phys 2019; 21:4831-4838. [PMID: 30775747 DOI: 10.1039/c8cp07051b] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
The photoluminescence (PL) properties of composites obtained by embedding green-emitting semiconductor nanocrystals (NCs) of two different types (thiol-capped CdTe and CdSe/ZnS) into chitosan-based biopolymer particles were investigated. The synthesis of self-assembled particles from oppositely charged polysaccharides involved a preliminary electrostatic binding of positively charged chitosan chains by negatively charged functional groups of NC stabilizing ligands. The amount of NCs and the acidity of the solution were found to be important parameters influencing the PL. The PL properties were mainly discussed in terms of the colloidal stability of the particles and changes in energy gap of NCs. Generally, the obtained biocompatible composites with NCs randomly distributed within a biopolymer particle demonstrated a higher PL resistance to the solution acidity that expands the applicability range of thiol-capped NCs.
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Affiliation(s)
- Nina Slyusarenko
- Siberian Federal University, Svobodny Prospect 79, 660041 Krasnoyarsk, Russia.
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A facile synthesis of biocompatible, glycol chitosan shelled CdSeS/ZnS QDs for live cell imaging. Colloids Surf B Biointerfaces 2018; 172:752-759. [DOI: 10.1016/j.colsurfb.2018.09.002] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2018] [Revised: 08/28/2018] [Accepted: 09/01/2018] [Indexed: 12/22/2022]
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8
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de Carvalho S, Mansur A, Mansur H, Guedes M, Lobato Z, Leite M. In vitro and in vivo assessment of nanotoxicity of CdS quantum dot/aminopolysaccharide bionanoconjugates. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2017; 71:412-424. [DOI: 10.1016/j.msec.2016.10.023] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/20/2016] [Revised: 09/26/2016] [Accepted: 10/16/2016] [Indexed: 01/06/2023]
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Ramanery FP, Mansur AAP, Mansur HS, Carvalho SM, Fonseca MC. Biocompatible Fluorescent Core-Shell Nanoconjugates Based on Chitosan/Bi2S3 Quantum Dots. NANOSCALE RESEARCH LETTERS 2016; 11:187. [PMID: 27067735 PMCID: PMC4828355 DOI: 10.1186/s11671-016-1417-6] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/07/2016] [Accepted: 04/04/2016] [Indexed: 05/29/2023]
Abstract
Bismuth sulfide (Bi2S3) is a narrow-bandgap semiconductor that is an interesting candidate for fluorescent biomarkers, thermoelectrics, photocatalysts, and photovoltaics. This study reports the synthesis and characterization of novel Bi2S3 quantum dots (QDs) functionalized using chitosan (CHI) as the capping ligands via aqueous "green" route at room temperature and ambient pressure. Transmission electron microscopy (TEM), UV-visible (UV-vis) spectroscopy, photoluminescence (PL) spectroscopy, dynamic light scattering (DLS), and zeta potential (ZP) analysis were used to characterize the hybrids made of biopolymer-functionalized Bi2S3 semiconductor nanocrystals. The results demonstrated that the CHI ligand was effective at nucleating and controlling the growth of water-soluble colloidal Bi2S3 nanoparticles. The average sizes of the Bi2S3 nanoparticles were significantly affected by the molar ratio of the precursors but less dependent on the pH of the aqueous media, leading to the formation of nanocrystals with average diameters varying from 4.2 to 6.7 nm. These surface-modified Bi2S3 nanocrystals with CHI exhibited photoluminescence in the visible spectral region. Moreover, the results of in vitro MTT (3-(4,5-dimethylthiazol-2yl)-2,5-diphenyltetrazolium bromide) assay with human osteosarcoma cells (SAOS) cell line demonstrated no cytotoxic response of the nanoconjugates.Furthermore, the results indicated that the Bi2S3 QD-CHI nanoconjugates showed HEK293T cell uptake; therefore, they can be potentially used as novel fluorescent nanoprobes for the in vitro bioimaging of cells in biomedical applications. Graphical Abstract Schematic representation of the biocompatible core-shell nanostructure of the chitosan/Bi2S3 quantum dot conjugates with photoluminescent properties.
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Affiliation(s)
- Fábio P Ramanery
- Center of Nanoscience, Nanotechnology and Innovation - CeNano²I, Department of Metallurgical and Materials Engineering, Federal University of Minas Gerais, Av. Antônio Carlos, 6627-Escola de Engenharia, Bloco 2-Sala 2233, Belo Horizonte, Minas Gerais, 31.270-901, Brazil
| | - Alexandra A P Mansur
- Center of Nanoscience, Nanotechnology and Innovation - CeNano²I, Department of Metallurgical and Materials Engineering, Federal University of Minas Gerais, Av. Antônio Carlos, 6627-Escola de Engenharia, Bloco 2-Sala 2233, Belo Horizonte, Minas Gerais, 31.270-901, Brazil
| | - Herman S Mansur
- Center of Nanoscience, Nanotechnology and Innovation - CeNano²I, Department of Metallurgical and Materials Engineering, Federal University of Minas Gerais, Av. Antônio Carlos, 6627-Escola de Engenharia, Bloco 2-Sala 2233, Belo Horizonte, Minas Gerais, 31.270-901, Brazil.
| | - Sandhra M Carvalho
- Center of Nanoscience, Nanotechnology and Innovation - CeNano²I, Department of Metallurgical and Materials Engineering, Federal University of Minas Gerais, Av. Antônio Carlos, 6627-Escola de Engenharia, Bloco 2-Sala 2233, Belo Horizonte, Minas Gerais, 31.270-901, Brazil
- Department of Preventive Veterinary Medicine, UFMG, Belo Horizonte, Brazil
| | - Matheus C Fonseca
- Department of Physiology and Biophysics, UFMG, Belo Horizonte, Brazil
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11
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Mansur AAP, Mansur HS, de Carvalho SM, Lobato ZIP, Guedes MIMC, Leite MF. Surface biofunctionalized CdS and ZnS quantum dot nanoconjugates for nanomedicine and oncology: to be or not to be nanotoxic? Int J Nanomedicine 2016; 11:4669-4690. [PMID: 27695325 PMCID: PMC5028090 DOI: 10.2147/ijn.s115208] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
Herein, for the first time, we demonstrated that novel biofunctionalized semiconductor nanomaterials made of Cd-containing fluorescent quantum dot nanoconjugates with the surface capped by an aminopolysaccharide are not biologically safe for clinical applications. Conversely, the ZnS-based nanoconjugates proved to be noncytotoxic, considering all the parameters investigated. The results of in vitro cytotoxicity were remarkably dependent on the chemical composition of quantum dot (CdS or ZnS), the nature of the cell (human cancerous and embryonic types), and the concentration and time period of exposure to these nanomaterials, caused by the effects of Cd2+ on the complex nanotoxicity pathways involved in cellular uptake. Unexpectedly, no decisive evidence of nanotoxicity of CdS and ZnS conjugates was observed in vivo using intravenous injections in BALB/c mice for 30 days, with minor localized fluorescence detected in liver tissue specimens. Therefore, these results proved that CdS nanoconjugates could pose an excessive threat for clinical applications due to unpredicted and uncorrelated in vitro and in vivo responses caused by highly toxic cadmium ions at biointerfaces. On the contrary, ZnS nanoconjugates proved that the "safe by design" concept used in this research (ie, biocompatible core-shell nanostructures) could benefit a plethora of applications in nanomedicine and oncology.
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Affiliation(s)
- Alexandra AP Mansur
- Center of Nanoscience, Nanotechnology, and Innovation-CeNanoI, Department of Metallurgical and Materials Engineering
| | - Herman S Mansur
- Center of Nanoscience, Nanotechnology, and Innovation-CeNanoI, Department of Metallurgical and Materials Engineering
| | - Sandhra M de Carvalho
- Center of Nanoscience, Nanotechnology, and Innovation-CeNanoI, Department of Metallurgical and Materials Engineering
- Department of Preventive Veterinary Medicine, Veterinary School
- Department of Physiology and Biophysics, ICB, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
| | - Zélia IP Lobato
- Department of Preventive Veterinary Medicine, Veterinary School
| | | | - Maria F Leite
- Department of Physiology and Biophysics, ICB, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
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Oh E, Liu R, Nel A, Gemill KB, Bilal M, Cohen Y, Medintz IL. Meta-analysis of cellular toxicity for cadmium-containing quantum dots. NATURE NANOTECHNOLOGY 2016; 11:479-86. [PMID: 26925827 DOI: 10.1038/nnano.2015.338] [Citation(s) in RCA: 280] [Impact Index Per Article: 35.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/18/2014] [Accepted: 12/16/2015] [Indexed: 04/14/2023]
Abstract
Understanding the relationships between the physicochemical properties of engineered nanomaterials and their toxicity is critical for environmental and health risk analysis. However, this task is confounded by material diversity, heterogeneity of published data and limited sampling within individual studies. Here, we present an approach for analysing and extracting pertinent knowledge from published studies focusing on the cellular toxicity of cadmium-containing semiconductor quantum dots. From 307 publications, we obtain 1,741 cell viability-related data samples, each with 24 qualitative and quantitative attributes describing the material properties and experimental conditions. Using random forest regression models to analyse the data, we show that toxicity is closely correlated with quantum dot surface properties (including shell, ligand and surface modifications), diameter, assay type and exposure time. Our approach of integrating quantitative and categorical data provides a roadmap for interrogating the wide-ranging toxicity data in the literature and suggests that meta-analysis can help develop methods for predicting the toxicity of engineered nanomaterials.
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Affiliation(s)
- Eunkeu Oh
- Optical Sciences Division, Code 5611, US Naval Research Laboratory, Washington, Washington DC 20375, USA
- Sotera Defense Solutions, Columbia, Maryland 21046, USA
| | - Rong Liu
- Institute of the Environment and Sustainability, University of California, Los Angeles, California 90095-1496, USA
- Center for Environmental Implications of Nanotechnology, University of California, Los Angeles, California 90095-7227, USA
| | - Andre Nel
- Center for Environmental Implications of Nanotechnology, University of California, Los Angeles, California 90095-7227, USA
- Department of Medicine, Division of NanoMedicine, University of California, Los Angeles, California 90095, USA
| | - Kelly Boeneman Gemill
- Center for Bio/Molecular Science and Engineering, Code 6900, US Naval Research Laboratory, SW Washington, Washington DC 20375, USA
| | - Muhammad Bilal
- Center for Environmental Implications of Nanotechnology, University of California, Los Angeles, California 90095-7227, USA
| | - Yoram Cohen
- Institute of the Environment and Sustainability, University of California, Los Angeles, California 90095-1496, USA
- Center for Environmental Implications of Nanotechnology, University of California, Los Angeles, California 90095-7227, USA
- Department of Chemical and Biomolecular Engineering, University of California, Los Angeles, California 90095-1592, USA
| | - Igor L Medintz
- Center for Bio/Molecular Science and Engineering, Code 6900, US Naval Research Laboratory, SW Washington, Washington DC 20375, USA
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Pederzoli F, Ruozi B, Pracucci E, Signore G, Zapparoli M, Forni F, Vandelli MA, Ratto G, Tosi G. Nanoimaging: photophysical and pharmaceutical characterization of poly-lactide-co-glycolide nanoparticles engineered with quantum dots. NANOTECHNOLOGY 2016; 27:015704. [PMID: 26597894 DOI: 10.1088/0957-4484/27/1/015704] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Quantum dots (QDs) and polymeric nanoparticles (NPs) are considered good binomials for the development of multifunctional nanomedicines for multimodal imaging. Fluorescent imaging of QDs can monitor the behavior of QD-labeled NPs in both cells and animals with high temporal and spatial resolutions. The comprehension of polymer interaction with the metallic QD surface must be considered to achieve a complete chemicophysical characterization of these systems and to describe the QD optical properties to be used for their unequivocal identification in the tissue. In this study, by comparing two different synthetic procedures to obtain polymeric nanoparticles labeled with QDs, we investigated whether their optical properties may change according to the formulation methods, as a consequence of the different polymeric environments. Atomic force microscopy, transmission electron microscopy, confocal and fluorescence lifetime imaging microscopy characterization demonstrated that NPs modified with QDs after the formulation process (post-NPs-QDs) conserved the photophysical features of the QD probe. In contrast, by using a polymer modified with QDs to formulate NPs (pre-NPs-QDs), a significant quenching of QD fluorescence and a blueshift in its emission spectra were observed. Our results suggest that the packaging of QDs into the polymeric matrix causes a modification of the QD optical properties: these effects must be characterized in depth and carefully considered when developing nanosystems for imaging and biological applications.
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Affiliation(s)
- F Pederzoli
- National Enterprise for nanoScience and nanoTechnology, Scuola Normale Superiore, Piazza San Silvestro 12, 56127 Pisa, Italy. Department of Life Sciences, University of Modena and Reggio Emilia, Via Campi 103, 41125 Modena, Italy
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14
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Abstract
At this post-genomic era, the focus of life science research has shifted from life genetic information to general biofunctions. Biomolecular sensors based on QDs will play an important role in the identification and detection of biomolecules.
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Affiliation(s)
| | - Jinzhi Lv
- Shanxi Normal University
- Linfen 041004
- PR China
| | - Yan Li
- Shanxi Normal University
- Linfen 041004
- PR China
| | - Guiqin Yan
- Shanxi Normal University
- Linfen 041004
- PR China
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Mansur AAP, de Almeida CG, de Carvalho SM, de Faria LV, de Almeida MV, Mansur HS. Cytocompatible Fluorescent Quantum Dot/PEG-Chitosan Bioconjugates for Nanomedicine Applications. Eur J Inorg Chem 2015. [DOI: 10.1002/ejic.201500441] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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16
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Mansur HS, Mansur AA, Soriano-Araújo A, Lobato ZI, de Carvalho SM, Leite MDF. Water-soluble nanoconjugates of quantum dot-chitosan-antibody for in vitro detection of cancer cells based on “enzyme-free” fluoroimmunoassay. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2015; 52:61-71. [DOI: 10.1016/j.msec.2015.03.022] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/20/2014] [Revised: 02/03/2015] [Accepted: 03/09/2015] [Indexed: 11/16/2022]
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17
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Mansur AAP, Mansur HS. Quantum dot/glycol chitosan fluorescent nanoconjugates. NANOSCALE RESEARCH LETTERS 2015; 10:172. [PMID: 25897312 PMCID: PMC4398684 DOI: 10.1186/s11671-015-0879-2] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/30/2015] [Accepted: 03/24/2015] [Indexed: 05/25/2023]
Abstract
In this study, novel carbohydrate-based nanoconjugates combining chemically modified chitosan with semiconductor quantum dots (QDs) were designed and synthesised via single-step aqueous route at room temperature. Glycol chitosan (G-CHI) was used as the capping ligand aiming to improve the water solubility of the nanoconjugates to produce stable and biocompatible colloidal systems. UV-visible (UV-vis) spectroscopy, photoluminescence (PL) spectroscopy, and Fourier transform infrared (FTIR) spectroscopy were used to characterise the synthesis and the relative stability of biopolymer-capped semiconductor nanocrystals. The results clearly demonstrated that the glycol chitosan derivative was remarkably effective at nucleating and stabilising semiconductor CdS quantum dots in aqueous suspensions under acidic, neutral, and alkaline media with an average size of approximately 2.5 nm and a fluorescent activity in the visible range of the spectra.
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Affiliation(s)
- Alexandra AP Mansur
- Center of Nanoscience, Nanotechnology and Innovation - CeNano2I, Department of Metallurgical and Materials Engineering, Federal University of Minas Gerais, Av. Antônio Carlos, 6627 - Escola de Engenharia, Bloco 2 - Sala 2233, Belo Horizonte, MG 31.270-901 Brazil
| | - Herman S Mansur
- Center of Nanoscience, Nanotechnology and Innovation - CeNano2I, Department of Metallurgical and Materials Engineering, Federal University of Minas Gerais, Av. Antônio Carlos, 6627 - Escola de Engenharia, Bloco 2 - Sala 2233, Belo Horizonte, MG 31.270-901 Brazil
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Ghormade V, Gholap H, Kale S, Kulkarni V, Bhat S, Paknikar K. Fluorescent cadmium telluride quantum dots embedded chitosan nanoparticles: a stable, biocompatible preparation for bio-imaging. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2014; 26:42-56. [DOI: 10.1080/09205063.2014.982240] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Wang L, Shen A, Li X, Zeng Y, Zhou X, Richards RM, Hu J. Inclusion of guest materials in aqueous coordination network shells spontaneously generated by reacting 2,5-dimercapto-1,3,4-thiadiazole with nanoscale metallic silver. RSC Adv 2014. [DOI: 10.1039/c4ra07281b] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023] Open
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Mansur AAP, Mansur HS, Soriano-Araújo A, Lobato ZIP. Fluorescent nanohybrids based on quantum dot-chitosan-antibody as potential cancer biomarkers. ACS APPLIED MATERIALS & INTERFACES 2014; 6:11403-12. [PMID: 24956063 DOI: 10.1021/am5019989] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
Despite undeniable advances in medicine in recent decades, cancer is still one of the main challenges faced by scientists and professionals in the health sciences as it remains one of the world's most devastating diseases with millions of fatalities and new cases every year. Thus, in this work, we endeavored to synthesize and characterize novel multifunctional immunoconjugates composed of quantum dots (QDs) as the fluorescent inorganic core and antibody-modified polysaccharide as the organic shell, focusing on their potential applications for in vitro diagnosis of non-Hodgkin lymphoma (NHL) cancer tumors. Chitosan was covalently conjugated with anti-CD20 polyclonal antibody (pAbCD20) via formation of amide bonds between amines and carboxyl groups. In the sequence, these biopolymer-antibody immunoconjugates were utilized as direct capping ligands for biofunctionalization of CdS QDs (CdS/chitosan-pAbCD20) using a single-step process in aqueous medium at room temperature. The nanostructures were characterized by UV-vis spectroscopy, photoluminescence spectroscopy (PL), FTIR, and transmission electron microscopy (TEM) with selected area electron diffraction. The TEM images associated with the UV-vis optical absorption results indicated formation of ultrasmall nanocrystals with average diameters in the range of 2.5-3.0 nm. Also, the PL results demonstrated that the immunoconjugates exhibited "green" fluorescent activity under ultraviolet excitation. Moreover, using in vitro laser light scattering immunoassay (LIA), the QDs/immunoconjugates have shown binding affinity against antigen CD20 (aCD20) expressed by lymphocyte-B cancer cells. In summary, innovative fluorescent nanoimmunoconjugate templates were developed with promising perspectives to be used in the future for detection and imaging of cancer tumors.
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Affiliation(s)
- Alexandra A P Mansur
- Center of Nanoscience, Nanotechnology, and Innovation-CeNano2I, School of Engineering, Department of Metallurgical and Materials Engineering and ‡Department of Preventive Veterinary Medicine, Veterinary School, Federal University of Minas Gerais , Av. Antônio Carlos, 6627, 31270-901, BeloHorizonte/MG, Brazil
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21
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Pinto RJB, Carlos LD, Marques PAAP, Silvestre AJD, Freire CSR. An overview of luminescent bio-based composites. J Appl Polym Sci 2014. [DOI: 10.1002/app.41169] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Ricardo J. B. Pinto
- Department of Chemistry, CICECO; University of Aveiro; 3810-193 Aveiro Portugal
| | - Luís D. Carlos
- Department of Physics, CICECO; University of Aveiro; 3810-193 Aveiro Portugal
| | - Paula A. A. P. Marques
- Department of Mechanical Engineering, TEMA; University of Aveiro; 3810-193 Aveiro Portugal
| | | | - Carmen S. R. Freire
- Department of Chemistry, CICECO; University of Aveiro; 3810-193 Aveiro Portugal
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22
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Miao Y, Zhang Z, Gong Y, Zhang Q, Yan G. Self-assembly of manganese doped zinc sulfide quantum dots/CTAB nanohybrids for detection of rutin. Biosens Bioelectron 2014; 52:271-6. [DOI: 10.1016/j.bios.2013.08.011] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2013] [Revised: 07/21/2013] [Accepted: 08/07/2013] [Indexed: 10/26/2022]
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23
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Determination of silver ion based on the redshift of emission wavelength of quantum dots functionalized with rhodanine. CHINESE CHEM LETT 2014. [DOI: 10.1016/j.cclet.2013.10.029] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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24
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Ramanery FP, Mansur AAP, Mansur HS. One-step colloidal synthesis of biocompatible water-soluble ZnS quantum dot/chitosan nanoconjugates. NANOSCALE RESEARCH LETTERS 2013; 8:512. [PMID: 24308633 PMCID: PMC4234014 DOI: 10.1186/1556-276x-8-512] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/02/2013] [Accepted: 11/27/2013] [Indexed: 05/04/2023]
Abstract
Quantum dots (QDs) are luminescent semiconductor nanocrystals with great prospective for use in biomedical and environmental applications. Nonetheless, eliminating the potential cytotoxicity of the QDs made with heavy metals is still a challenge facing the research community. Thus, the aim of this work was to develop a novel facile route for synthesising biocompatible QDs employing carbohydrate ligands in aqueous colloidal chemistry with optical properties tuned by pH. The synthesis of ZnS QDs capped by chitosan was performed using a single-step aqueous colloidal process at room temperature. The nanobioconjugates were extensively characterised by several techniques, and the results demonstrated that the average size of ZnS nanocrystals and their fluorescent properties were influenced by the pH during the synthesis. Hence, novel 'cadmium-free' biofunctionalised systems based on ZnS QDs capped by chitosan were successfully developed exhibiting luminescent activity that may be used in a large number of possible applications, such as probes in biology, medicine and pharmacy.
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Affiliation(s)
- Fábio P Ramanery
- Center of Nanoscience, Nanotechnology and Innovation - CeNano2I, Department of Metallurgical and Materials Engineering, Escola de Engenharia, Federal University of Minas Gerais, Bloco 2, Sala 2233, Av. Antônio Carlos, 6627, Belo Horizonte, Minas Gerais 31270-901, Brazil
| | - Alexandra AP Mansur
- Center of Nanoscience, Nanotechnology and Innovation - CeNano2I, Department of Metallurgical and Materials Engineering, Escola de Engenharia, Federal University of Minas Gerais, Bloco 2, Sala 2233, Av. Antônio Carlos, 6627, Belo Horizonte, Minas Gerais 31270-901, Brazil
| | - Herman S Mansur
- Center of Nanoscience, Nanotechnology and Innovation - CeNano2I, Department of Metallurgical and Materials Engineering, Escola de Engenharia, Federal University of Minas Gerais, Bloco 2, Sala 2233, Av. Antônio Carlos, 6627, Belo Horizonte, Minas Gerais 31270-901, Brazil
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25
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Abdelhamid HN, Wu HF. Probing the interactions of chitosan capped CdS quantum dots with pathogenic bacteria and their biosensing application. J Mater Chem B 2013; 1:6094-6106. [PMID: 32260994 DOI: 10.1039/c3tb21020k] [Citation(s) in RCA: 70] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Chitosan modified CdS quantum dots (CdS@CTS) can be used as an effective bacterial biosensor due to their good bioaffinity among chitosan molecules and bacterial membranes. CdS@CTS is an ultrafast, sensitive, direct and biocompatible biosensor for pathogenic bacteria (Pseudomonas aeruginosa and Staphylococcus aureus). Chitosan biopolymer of CdS@CTS provides bioaffinity sites that can be employed for the assembly on pathogen bacteria cells due to the chemical similarity of the chitosan and the bacteria membranes. Thus, S. aureus and P. aeruginosa cells were detected at low concentrations of 150 and 200 cfu mL-1, respectively, in an extremely short time (1 min). The CdS@CTS-bacteria interaction is noncovalent. From the thermodynamic results, the van der Waals force and hydrogen bonding formation are characterized by negative enthalpy (ΔH), while positive entropy (ΔS) is considered as the evidence for typical hydrophobic interactions. Moreover, negative ΔH and positive ΔS might play a role in the electrostatic interactions. The negative free energy (ΔG) shows that the binding events were spontaneous processes. Matrix assisted laser desorption/ionization mass spectrometry (MALDI-MS) and transmission electron microscopy (TEM) were performed to evaluate the interactions and the biocompatibility of CdS@CTS toward bacteria cells. Their biocompatibility, together with the high sensitivity and the presence of multifunctional forces, making these quantum dots (CdS@CTS) an excellent and novel biosensor which can be widely applied in the near future.
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26
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Zhao Q, Rong X, Chen L, Ma H, Tao G. Layer-by-layer self-assembly xylenol orange functionalized CdSe/CdS quantum dots as a turn-on fluorescence lead ion sensor. Talanta 2013; 114:110-6. [DOI: 10.1016/j.talanta.2013.04.016] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2013] [Revised: 04/01/2013] [Accepted: 04/06/2013] [Indexed: 10/27/2022]
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27
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Mewada A, Pandey S, Shinde S, Mishra N, Oza G, Thakur M, Sharon M, Sharon M. Green synthesis of biocompatible carbon dots using aqueous extract of Trapa bispinosa peel. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2013; 33:2914-7. [DOI: 10.1016/j.msec.2013.03.018] [Citation(s) in RCA: 184] [Impact Index Per Article: 16.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/17/2013] [Revised: 03/08/2013] [Accepted: 03/11/2013] [Indexed: 10/27/2022]
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28
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Significance of nano- and microtopography for cell-surface interactions in orthopaedic implants. J Biomed Biotechnol 2012; 2007:69036. [PMID: 18274618 PMCID: PMC2233875 DOI: 10.1155/2007/69036] [Citation(s) in RCA: 101] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2007] [Accepted: 08/05/2007] [Indexed: 01/12/2023] Open
Abstract
Cell-surface interactions play a crucial role for biomaterial application in orthopaedics. It is evident that not only the chemical composition of solid substances influence cellular adherence, migration, proliferation and differentiation but also the surface topography of a biomaterial. The progressive application of nanostructured surfaces in medicine has gained increasing interest to improve the cytocompatibility and osteointegration of orthopaedic implants. Therefore, the understanding of cell-surface interactions is of major interest for these substances. In this review, we elucidate the principle mechanisms of nano- and microscale cell-surface interactions in vitro for different cell types onto typical orthopaedic biomaterials such as titanium (Ti), cobalt-chrome-molybdenum (CoCrMo) alloys, stainless steel (SS), as well as synthetic polymers (UHMWPE, XLPE, PEEK, PLLA). In addition, effects of nano- and microscaled particles and their significance in orthopaedics were reviewed. The significance for the cytocompatibility of nanobiomaterials is discussed critically.
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29
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Chang B, Zhang X, Guo J, Sun Y, Tang H, Ren Q, Yang W. General one-pot strategy to prepare multifunctional nanocomposites with hydrophilic colloidal nanoparticles core/mesoporous silica shell structure. J Colloid Interface Sci 2012; 377:64-75. [PMID: 22520713 DOI: 10.1016/j.jcis.2012.03.082] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2011] [Revised: 02/20/2012] [Accepted: 03/28/2012] [Indexed: 12/19/2022]
Abstract
A general and facile strategy was developed to coat hydrophilic inorganic nanoparticles directly with mesoporous silica nanoparticles (MSNs). The cationic surfactant of cetyltrimethylammonium bromide (CTAB) was adsorbed to various negatively charged CdTe quantum dots, Fe(3)O(4) nanocrystals or Au nanoparticles, introducing the bilayer of CTAB overcoating with positive charge. The subsequent sol-gel reaction of TEOS with the basic catalyst resulted in uniform nanocomposites. The concentration of CTAB and NH(4)OH in the recipe strongly influenced the number of inorganic nanoparticles in the nanocomposites and the homogeneity of MSNs shell. One dimensional Au nanorods and larger size of solid SiO(2) nanoparticles were also able to coat with MSNs using a similar synthetic procedure. The proposed method was greatly simplified without the help of any mediators or silane coupling agents and excellent mesostructural performance was readily achieved. Compared to the methods known from the literatures for the coating of hydrophobic nanoparticles, this efficient way is especially useful for trapping different hydrophilic nanoparticles with arbitrary sizes and shapes into MSNs. These highly versatile multifunctional nanocomposites, together with the pH-responsible drug release behaviors, non-toxicity to normal cells and ease of uptake into cancer cells, are expected to be utilized as drug delivery system for simultaneous imaging and therapeutic applications.
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Affiliation(s)
- Baisong Chang
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Shanghai 200433, China
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30
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Fang Y, Guo S, Li D, Zhu C, Ren W, Dong S, Wang E. Easy synthesis and imaging applications of cross-linked green fluorescent hollow carbon nanoparticles. ACS NANO 2012; 6:400-409. [PMID: 22188541 DOI: 10.1021/nn2046373] [Citation(s) in RCA: 294] [Impact Index Per Article: 24.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
We propose an ingenious method for synthesizing cross-linked hollow fluorescent carbon nanoparticles (HFCNs) with green emission by simply mixing acetic acid, water, and diphosphorus pentoxide. This is an automatic method without external heat treatment to rapidly produce large quantities of HFCNs, in contrast to other syntheses of fluorescent carbon nanoparticles that required high temperature, complicated operations, or long reaction times. Characterizations of HFCNs through high-resolution transmission electron microscopy, infrared/Raman spectroscopy, and X-ray diffraction indicate that abundant small oxygenous graphite domains existed and endowed the HFCNs with fluorescent properties. After simple post-treatments, the cross-linked HFCNs can be used for cell-imaging applications. Compared with traditional dyes and CdTe quantum dots, HFCNs are the superior fluorescent bioimaging agent according to their low toxicity, stability, and resistance to photobleaching. The HFCNs were also applied to watermark ink and fluorescent powder, showing their promising potentials for further wide usage.
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Affiliation(s)
- Youxing Fang
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, Jilin, People's Republic of China
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31
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Sun X, Liu B, Xu Y. Dual-emission quantum dots nanocomposites bearing an internal standard and visual detection for Hg2+. Analyst 2012; 137:1125-9. [DOI: 10.1039/c2an16026a] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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32
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Ethiraj AS, Wua HF, Gopal J. Synthesis and Characterization of Ultrasmall Thioglycerol Modified ZnS Quantum Dots. J CHIN CHEM SOC-TAIP 2011. [DOI: 10.1002/jccs.201190125] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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33
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Hlavacek A, Bouchal P, Skládal P. Biotinylation of quantum dots for application in fluoroimmunoassays with biotin-avidin amplification. Mikrochim Acta 2011. [DOI: 10.1007/s00604-011-0729-6] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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34
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Lu Z, Zhu Z, Zheng X, Qiao Y, Guo J, Li CM. Biocompatible fluorescence-enhanced ZrO₂-CdTe quantum dot nanocomposite for in vitro cell imaging. NANOTECHNOLOGY 2011; 22:155604. [PMID: 21389568 DOI: 10.1088/0957-4484/22/15/155604] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
With advances of quantum dots (QDs) in bioimaging applications, various materials have been used to coat QDs to reduce their nanotoxicity; however, the coating could introduce new toxic sources and quench the fluorescence in bioimaging applications. In this work, ZrO₂, an excellent ceramic material with low extinction coefficient and good biocompatibility, is utilized to coat CdTe QDs for the first time. Experimental results show that ZrO₂-QD nanocomposites with the size of ~30 nm possess enhanced fluorescence emission, lower nanotoxicity and gradually increased fluorescence under 350 nm light illumination. After functionalization with folic acid, they were applied to label cultured HeLa cells effectively. Therefore, the ZrO₂-QD nanocomposites could be promising biocompatible nanomaterials with strong fluorescence emission to replace or complement QDs in biomedical applications.
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Affiliation(s)
- Zhisong Lu
- School of Chemical and Biomedical Engineering, Nanyang Technological University, 70 Nanyang Drive, 637457 Singapore
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35
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Lin Y, Zhang L, Yao W, Qian H, Ding D, Wu W, Jiang X. Water-soluble chitosan-quantum dot hybrid nanospheres toward bioimaging and biolabeling. ACS APPLIED MATERIALS & INTERFACES 2011; 3:995-1002. [PMID: 21388158 DOI: 10.1021/am100982p] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
A facile approach to prepare CdSe/ZnS quantum dot-encapsulated chitosan hybrid nanospheres (CS-QD) is developed by utilizing ethanol-aided counterion complexation in aqueous solution. The obtained CS-QD hybrid nanospheres have not only the loading space provided by the chitosan spherical matrix for loading multiply QDs but also unique fluorescent properties provided by the encapsulated QDs. Moreover, these hybrid nanospheres possess good biocompatibility and optical stability in physiological environment. It is demonstrated that CS-QD hybrid nanospheres can be internalized by tumor cells and hence act as labeling agent in cell imaging by optical microscopy. In addition, CS-QD hybrid nanospheres can be used for imaging of tumor in tumor-bearing mice via intratumoral administration and can accumulate at tumor site via the blood circulation based on intravenous injection. Thus, on the one hand, chitosan nanospheres provide the protection in both colloidal and optical stability arising from QDs and offer biocompatibility. On the other hand, the encapsulated QDs light up polymer nanospheres and display the fate of polymer nanospheres in cells and bodies.
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Affiliation(s)
- Ying Lin
- Laboratory of Mesoscopic Chemistry and Department of Polymer Science & Engineering, College of Chemistry & Chemical Engineering, Nanjing University, Nanjing 210093, PR China
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36
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Biju V, Mundayoor S, Anas A, Ishikawa M. Prospects of Semiconductor Quantum Dots for Imaging and Photodynamic Therapy of Cancer. NANOTECHNOLOGIES FOR THE LIFE SCIENCES 2011. [DOI: 10.1002/9783527610419.ntls0198] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
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37
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Wang Y, Chen L. Quantum dots, lighting up the research and development of nanomedicine. NANOMEDICINE-NANOTECHNOLOGY BIOLOGY AND MEDICINE 2011; 7:385-402. [PMID: 21215327 DOI: 10.1016/j.nano.2010.12.006] [Citation(s) in RCA: 156] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/09/2010] [Revised: 11/17/2010] [Accepted: 12/17/2010] [Indexed: 12/28/2022]
Abstract
UNLABELLED Quantum dots (QDs) have proven themselves as powerful inorganic fluorescent probes, especially for long term, multiplexed imaging and detection. The newly developed QDs labeling techniques have facilitated the study of drug delivery on the level of living cells and small animals. Moreover, based on QDs and fluorescence imaging system, multifunctional nanocomplex integrated targeting, imaging and therapeutic functionalities have become effective materials for synchronous cancer diagnosis and treatment. In this review, we will summarize the recent advances of QDs in the research of drug delivery system from the following aspects: surface modification strategies of QDs for drug delivery, QDs as drug nanocarriers, QD-labeled drug nanocarriers, QD-based fluorescence resonance energy transfer (FRET) technique for drug release study as well as the development of multifunctional nanomedicines. Possible perspective in this field will also be discussed. FROM THE CLINICAL EDITOR This review discusses the role and significance of quantum dots (QDs) from the following aspects: surface modification strategies of QDs for drug delivery, QDs as drug nanocarriers, QD-labeled drug nanocarriers, QD-based fluorescence resonance energy transfer (FRET) technique for drug release study as well as the development of multifunctional nanomedicines.
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Affiliation(s)
- Yunqing Wang
- Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, China
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BAI W, ZHENG H, LONG Y, MAO X, GAO M, ZHANG L. A Carbon Dots-based Fluorescence Turn-on Method for DNA Determination. ANAL SCI 2011; 27:243-6. [DOI: 10.2116/analsci.27.243] [Citation(s) in RCA: 70] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Affiliation(s)
- WenJun BAI
- Key Laboratory on Luminescence and Real-Time Analysis (Southwest University), Ministry of Education, College of Chemistry and Chemical Engineering, Southwest University
| | - HuZhi ZHENG
- Key Laboratory on Luminescence and Real-Time Analysis (Southwest University), Ministry of Education, College of Chemistry and Chemical Engineering, Southwest University
| | - YiJuan LONG
- Key Laboratory on Luminescence and Real-Time Analysis (Southwest University), Ministry of Education, College of Chemistry and Chemical Engineering, Southwest University
| | - XiaoJiao MAO
- Key Laboratory on Luminescence and Real-Time Analysis (Southwest University), Ministry of Education, College of Chemistry and Chemical Engineering, Southwest University
| | - Mei GAO
- Key Laboratory on Luminescence and Real-Time Analysis (Southwest University), Ministry of Education, College of Chemistry and Chemical Engineering, Southwest University
| | - Lingyan ZHANG
- Key Laboratory on Luminescence and Real-Time Analysis (Southwest University), Ministry of Education, College of Chemistry and Chemical Engineering, Southwest University
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39
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Yong KT. Biophotonics and biotechnology in pancreatic cancer: cyclic RGD-peptide-conjugated type II quantum dots for in vivo imaging. Pancreatology 2010; 10:553-64. [PMID: 20975319 DOI: 10.1159/000283577] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/21/2009] [Accepted: 01/29/2010] [Indexed: 12/11/2022]
Abstract
This work introduces a novel, facile and straightforward approach to produce cyclic-RGD-peptide-conjugated type II CdTe/CdS quantum dot (QD) formulation for pancreatic tumor targeting and imaging in live animals. The ultra-small QDs were prepared by a hot colloidal synthesis method. Phospholipid micelles were then used to encapsulate the QDs, allowing them to be stably dispersed in biological fluids and able to conjugate with cyclic-RGD peptides. The QD complex had shown low cytotoxicity on Panc-1 human pancreatic cancer cell lines. In addition, the tissue sections and biodistribution of QD complexes were imaged and analyzed in mice bearing pancreatic tumor xenografts, confirming specific tumor targeting. These studies support further evaluation of type II QDs as potential probes for early pancreatic cancer assessment and detection.
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Affiliation(s)
- Ken-Tye Yong
- Institute for Lasers, Photonics and Biophotonics, University at Buffalo, The State University of New York, Buffalo, NY, USA.
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Bao H, Lu Z, Cui X, Qiao Y, Guo J, Anderson JM, Li CM. Extracellular microbial synthesis of biocompatible CdTe quantum dots. Acta Biomater 2010; 6:3534-41. [PMID: 20350621 DOI: 10.1016/j.actbio.2010.03.030] [Citation(s) in RCA: 146] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2010] [Revised: 02/17/2010] [Accepted: 03/22/2010] [Indexed: 11/28/2022]
Abstract
An efficient bacterial synthesis method to harvest cadmium telluride (CdTe) quantum dots (QDs) with tunable fluorescence emission using Escherichia coli is demonstrated. Ultraviolet-visible, photoluminescence, X-ray diffraction and transmission electron microscopy analysis confirmed the superior size-tunable optical properties, with fluorescence emission from 488 to 551 nm, and the good crystallinity of the as synthesized QDs. A surface protein capping layer was confirmed by hydrodynamic size, zeta potential and Fourier transform infrared spectroscopy measurements, which could maintain the viability (92.9%) of cells in an environment with a QD concentration as high as 2 microM. After functionalization with folic acid the QDs were used to image cultured cervical cancer cells in vitro. Investigations of bacterial growth and morphology and the biosynthesis of CdTe QDs in Luria-Bertani medium containing E. coli-secreted proteins showed that extracellular synthesis directly relied on the E. coli-secreted proteins, and a mechanism for protein-assisted biosynthesis of QDs is proposed. This work provides an economical approach to fabricate highly fluorescent biocompatible CdTe QDs via an environmentally friendly production process. The biosynthesized QDs may have great potential in broad bio-imaging and bio-labeling applications.
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Affiliation(s)
- Haifeng Bao
- School of Chemical and Biomedical Engineering and Center for Advanced Bionanosystems, Nanyang Technological University, 70 Nanyang Drive, Singapore 637457, Singapore
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41
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Li X, Wang T, Zhang J, Zhu D, Zhang X, Ning Y, Zhang H, Yang B. Controlled fabrication of fluorescent barcode nanorods. ACS NANO 2010; 4:4350-4360. [PMID: 20731421 DOI: 10.1021/nn9017137] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
We report a novel technique for generating polymer fluorescent barcode nanorods by reactive ion etching of polymer multilayer films using nonclose-packed (ncp) colloidal microsphere arrays as masks. The fluorescent polymer multilayer films were spin-coated on a substrate, and ncp microsphere arrays were transferred onto these films. The exposed polymers were then etched away selectively, leaving color-encoded nanorods with well-preserved fluorescent properties. By modifying the spin-coating procedure, the amount of polymer in each layer could be tuned freely, which determined the relative fluorescence intensity of the barcode nanorods. These nanorod arrays can be detached from the substrate to form dispersions of coding materials. Moreover, the shape of the nanorods is controllable according to the different etching speeds of various materials, which also endows the nanorods with shape-encoded characters. This method offers opportunities for the fabrication of novel fluorescent barcodes which can be used for detecting and tracking applications.
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Affiliation(s)
- Xiao Li
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun 130012, PR China
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Prasad BR, Nikolskaya N, Connolly D, Smith TJ, Byrne SJ, Gérard VA, Gun'ko YK, Rochev Y. Long-term exposure of CdTe quantum dots on PC12 cellular activity and the determination of optimum non-toxic concentrations for biological use. J Nanobiotechnology 2010; 8:7. [PMID: 20338051 PMCID: PMC2856518 DOI: 10.1186/1477-3155-8-7] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2009] [Accepted: 03/25/2010] [Indexed: 01/13/2023] Open
Abstract
Background The unique and tuneable photonic properties of Quantum Dots (QDs) have made them potentially useful tools for imaging biological entities. However, QDs though attractive diagnostic and therapeutic tools, have a major disadvantage due to their inherent cytotoxic nature. The cellular interaction, uptake and resultant toxic influence of CdTe QDs (gelatinised and non-gelatinised Thioglycolic acid (TGA) capped) have been investigated with pheochromocytoma 12 (PC12) cells. In conjunction to their analysis by confocal microscopy, the QD - cell interplay was explored as the QD concentrations were varied over extended (up to 72 hours) co-incubation times. Coupled to this investigation, cell viability, DNA quantification and cell proliferation assays were also performed to compare and contrast the various factors leading to cell stress and ultimately death. Results Thioglycolic acid (TGA) stabilised CdTe QDs (gel and non - gel) were co-incubated with PC12 cells and investigated as to how their presence influenced cell behaviour and function. Cell morphology was analysed as the QD concentrations were varied over co-incubations up to 72 hours. The QDs were found to be excellent fluorophores, illuminating the cytoplasm of the cells and no deleterious effects were witnessed at concentrations of ~10-9 M. Three assays were utilised to probe how individual cell functions (viability, DNA quantification and proliferation) were affected by the presence of the QDs at various concentrations and incubation times. Cell response was found to not only be concentration dependant but also influenced by the surface environment of the QDs. Gelatine capping on the surface acts as a barrier towards the leaking of toxic atoms, thus reducing the negative impact of the QDs. Conclusion This study has shown that under the correct conditions, QDs can be routinely used for the imaging of PC12 cells with minimal adverse effects. We have found that PC12 cells are highly susceptible to an increased concentration range of the QDs, while the gelatine coating acts as a barrier towards enhanced toxicity at higher QD concentrations.
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Affiliation(s)
- Babu R Prasad
- National Centre for Biomedical Engineering Science, National University of Ireland, Galway, Ireland.
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Mao XJ, Zheng HZ, Long YJ, Du J, Hao JY, Wang LL, Zhou DB. Study on the fluorescence characteristics of carbon dots. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2010; 75:553-557. [PMID: 20022294 DOI: 10.1016/j.saa.2009.11.015] [Citation(s) in RCA: 85] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/01/2009] [Accepted: 11/08/2009] [Indexed: 05/28/2023]
Abstract
Herein, we prepared water-soluble fluorescent carbon dots with diameter about 1.5 nm from cheap commercial lampblack. These fluorescent carbon nanoparticles are stable toward photobleaching and stable in water for more than half a year without fluorescence decrease. In order to improve its fluorescence properties, we passivated these nanoparticles with bisamino-terminated polyethylene glycol (PEG(1500 N)). Therefore, both fluorescence quantum yield and lifetime increased after this progress. In addition, the passivated carbon dots were more inert to solvent than the bare one and showed different responses to pH change.
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Affiliation(s)
- Xiao-Jiao Mao
- Key Laboratory on Luminescence and Real-Time Analysis, Ministry of Education, College of Chemistry and Chemical Engineering, Southwest University, Beibei, Chongqing 400715, PR China
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Djoković V, Krsmanović R, Božanić DK, McPherson M, Van Tendeloo G, Nair PS, Georges MK, Radhakrishnan T. Adsorption of sulfur onto a surface of silver nanoparticles stabilized with sago starch biopolymer. Colloids Surf B Biointerfaces 2009; 73:30-5. [DOI: 10.1016/j.colsurfb.2009.04.022] [Citation(s) in RCA: 56] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2009] [Revised: 04/21/2009] [Accepted: 04/22/2009] [Indexed: 11/24/2022]
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Hoa TTQ, Vu LV, Canh TD, Long NN. Preparation of ZnS nanoparticles by hydrothermal method. ACTA ACUST UNITED AC 2009. [DOI: 10.1088/1742-6596/187/1/012081] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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47
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Biopolymer-protected CdSe nanoparticles. Carbohydr Res 2009; 344:2383-7. [PMID: 19772959 DOI: 10.1016/j.carres.2009.08.018] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2009] [Revised: 07/17/2009] [Accepted: 08/19/2009] [Indexed: 11/22/2022]
Abstract
A synthetic procedure for the encapsulation of cadmium selenide (CdSe) nanoparticles in a sago starch matrix is introduced. The nanocomposite was investigated using structural, spectroscopic, and thermal methods. TEM micrographs of the nanocomposite showed spherical CdSe particles of 4-5 nm in size coated with a biopolymer layer. The absorption edges of both the aqueous solution and the thin film of the CdSe-starch nanocomposite were shifted toward lower wavelengths in comparison to the value of the bulk semiconductor. Infrared measurements revealed that the interaction of CdSe nanoparticles and starch chains takes place via OH groups. Although the onset of the temperature of decomposition of CdSe-starch nanocomposite is lower than that of the pure matrix, thermogravimetric analysis also showed that introduction of CdSe nanoparticles significantly reduced starch degradation rate leading to high residual mass at the end of the degradation process.
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He Y, Wang HF, Yan XP. Self-Assembly of Mn-Doped ZnS Quantum Dots/Octa(3-aminopropyl)octasilsequioxane Octahydrochloride Nanohybrids for Optosensing DNA. Chemistry 2009; 15:5436-40. [DOI: 10.1002/chem.200900432] [Citation(s) in RCA: 101] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Cadmium sulfide quantum dot/chitosan nanocomposites for latent fingermark detection. Forensic Sci Int 2009; 187:97-102. [DOI: 10.1016/j.forsciint.2009.03.006] [Citation(s) in RCA: 68] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2009] [Revised: 03/03/2009] [Accepted: 03/05/2009] [Indexed: 11/19/2022]
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Yong KT, Roy I, Swihart MT, Prasad PN. Multifunctional Nanoparticles as Biocompatible Targeted Probes for Human Cancer Diagnosis and Therapy. ACTA ACUST UNITED AC 2009; 19:4655-4672. [PMID: 20305738 DOI: 10.1039/b817667c] [Citation(s) in RCA: 164] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The use of nanoparticles in biological application has been rapidly advancing toward practical applications in human cancer diagnosis and therapy. Upon linking the nanoparticles with biomolecules, they can be used to locate cancerous area as well as for traceable drug delivery with high affinity and specificity. In this review, we discuss the engineering of multifunctional nanoparticle probes and their use in bioimaging and nanomedicine.
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Affiliation(s)
- Ken-Tye Yong
- Institute for Lasers, Photonics and Biophotonics, Department of Chemical and Biological Engineering, University at Buffalo, The State University of New York, Buffalo, New York 14260-4200
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