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Luminescent switch of polysaccharide-peptide-quantum dot nanostructures for targeted-intracellular imaging of glioblastoma cells. J Mol Liq 2020. [DOI: 10.1016/j.molliq.2020.112759] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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Carvalho IC, Mansur AA, Carvalho SM, Florentino RM, Mansur HS. L-cysteine and poly-L-arginine grafted carboxymethyl cellulose/Ag-In-S quantum dot fluorescent nanohybrids for in vitro bioimaging of brain cancer cells. Int J Biol Macromol 2019; 133:739-753. [DOI: 10.1016/j.ijbiomac.2019.04.140] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2019] [Revised: 04/15/2019] [Accepted: 04/18/2019] [Indexed: 12/13/2022]
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Mansur AAP, Mansur HS, Caires AJ, Mansur RL, Oliveira LC. Composition-Tunable Optical Properties of Zn x Cd (1 - x)S Quantum Dot-Carboxymethylcellulose Conjugates: Towards One-Pot Green Synthesis of Multifunctional Nanoplatforms for Biomedical and Environmental Applications. NANOSCALE RESEARCH LETTERS 2017; 12:443. [PMID: 28683540 PMCID: PMC5498436 DOI: 10.1186/s11671-017-2212-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/04/2017] [Accepted: 06/25/2017] [Indexed: 05/16/2023]
Abstract
Quantum dots (QDs) are colloidal semiconductor nanocrystals with unique properties that can be engineered by controlling the nanoparticle size and chemical composition by doping and alloying strategies. However, due to their potential toxicity, augmenting their biocompatibility is yet a challenge for expanding to several biomedical and environmentally friendly applications. Thus, the main goal of this study was to develop composition-tunable and biocompatible Zn x Cd1 - x S QDs using carboxymethylcellulose polysaccharide as direct capping ligand via green colloidal aqueous route at neutral pH and at room temperature for potential biomedical and environmental applications. The ternary alloyed QDs were extensively characterized using UV-vis spectroscopy, photoluminescence spectroscopy (PL), transmission electron microscopy (TEM), X-ray diffraction (XRD), electron energy loss spectroscopy (EELS), and X-ray photoelectrons spectroscopy (XPS). The results indicated that Zn x Cd(1 - x)S QDs were surface stabilized by carboxymethylcellulose biopolymer with spherical morphology for all composition of alloys and narrow sizes distributions ranging from 4 to 5 nm. The XRD results indicated that monophasic ternary alloyed Zn x Cd1 - x S nanocrystals were produced with homogenous composition of the core as evidenced by EELS and XPS analyses. In addition, the absorption and emission optical properties of Zn x Cd1 - x S QDs were red shifted with increasing the amount of Cd2+ in the alloyed nanocrystals, which have also increased the quantum yield compared to pure CdS and ZnS nanoparticles. These properties of alloyed nanomaterials were interpreted based on empirical model of Vegard's law and chemical bond model (CBM). As a proof of concept, these alloyed-QD conjugates were tested for biomedical and environmental applications. The results demonstrated that they were non-toxic and effective fluorophores for bioimaging live HEK293T cells (human embryonic kidney cells) using confocal laser scanning fluorescence microscopy. Moreover, these conjugates presented photocatalytic activity for photodegradation of methylene blue used as model organic industrial pollutant in water. Hence, composition-tunable optical properties of ternary Zn x Cd1 - x S (x = 0-1) fluorescent alloyed QDs was achieved using a facile eco-friendly aqueous processing route, which can offer promising alternatives for developing innovative nanomaterials for applications in nanomedicine and environmental science and technology.
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Affiliation(s)
- Alexandra A P Mansur
- Center of Nanoscience, Nanotechnology and Innovation - CeNano(2)I, Department of Metallurgical and Materials Engineering, Universidade Federal de Minas Gerais-UFMG, Belo Horizonte, Brazil
| | - Herman S Mansur
- Center of Nanoscience, Nanotechnology and Innovation - CeNano(2)I, Department of Metallurgical and Materials Engineering, Universidade Federal de Minas Gerais-UFMG, Belo Horizonte, Brazil.
- Federal University of Minas Gerais, Av. Antônio Carlos, 6627 - Escola de Engenharia, Bloco 2 - Sala 2233, Belo Horizonte, MG, 31.270-901, Brazil.
| | - Anderson J Caires
- Center of Nanoscience, Nanotechnology and Innovation - CeNano(2)I, Department of Metallurgical and Materials Engineering, Universidade Federal de Minas Gerais-UFMG, Belo Horizonte, Brazil
| | - Rafael L Mansur
- Center of Nanoscience, Nanotechnology and Innovation - CeNano(2)I, Department of Metallurgical and Materials Engineering, Universidade Federal de Minas Gerais-UFMG, Belo Horizonte, Brazil
| | - Luiz C Oliveira
- Department of Chemistry, Universidade Federal de Minas Gerais-UFMG, Belo Horizonte, Brazil
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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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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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Carvalho SM, Mansur HS, Ramanery FP, Mansur AAP, Lobato ZIP, Leite MF. Cytotoxicity investigation of luminescent nanohybrids based on chitosan and carboxymethyl chitosan conjugated with Bi 2S 3 quantum dots for biomedical applications. Toxicol Res (Camb) 2016; 5:1017-1028. [PMID: 30090409 PMCID: PMC6062294 DOI: 10.1039/c6tx00039h] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2016] [Accepted: 04/13/2016] [Indexed: 11/21/2022] Open
Abstract
Bioengineered hybrids are emerging as a new class of nanomaterials consisting of a biopolymer and inorganic semiconductors used in biomedical and environmental applications. The aim of the present work was to determine the cytocompatibility of novel water-soluble Bi2S3 quantum dots (QDs) functionalized with chitosan and O-carboxymethyl chitosan (CMC) as capping ligands using an eco-friendly aqueous process at room temperature. These hybrid nanocomposites were tested for cytocompatibility using a 3-(4,5-dimethylthiazol-2yl) 2,5-diphenyl tetrazolium bromide (MTT) cell proliferation assay with cultured human osteosarcoma cells (SAOS), human embryonic kidney cells (HEK293T cells) and a LIVE/DEAD® viability-cytotoxicity assay. The results of the in vitro assays demonstrated that the CMC and chitosan-based nanohybrids were not cytotoxic and exhibited suitable cell viability responses. However, despite the "safe by design" approach used in this research, we have proved that the impact of the size, surface charge and biofunctionalization of the nanohybrids on cytotoxicity was cell type-dependent due to complex mechanisms. Thus, these novel bionanocomposites offer promising prospects for potential biomedical and pharmaceutical applications as fluorescent nanoprobes.
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Affiliation(s)
- Sandhra M Carvalho
- Center of Nanoscience , Nanotechnology and Innovation - CeNano2I , Department of Metallurgical and Materials Engineering , Federal University of Minas Gerais-UFMG , Brazil . ; ; Tel: +55-31-34091843
| | - Herman S Mansur
- Center of Nanoscience , Nanotechnology and Innovation - CeNano2I , Department of Metallurgical and Materials Engineering , Federal University of Minas Gerais-UFMG , Brazil . ; ; Tel: +55-31-34091843
| | - Fábio P Ramanery
- Center of Nanoscience , Nanotechnology and Innovation - CeNano2I , Department of Metallurgical and Materials Engineering , Federal University of Minas Gerais-UFMG , Brazil . ; ; Tel: +55-31-34091843
| | - Alexandra A P Mansur
- Center of Nanoscience , Nanotechnology and Innovation - CeNano2I , Department of Metallurgical and Materials Engineering , Federal University of Minas Gerais-UFMG , Brazil . ; ; Tel: +55-31-34091843
| | - Zelia I P Lobato
- Department of Preventive Veterinary Medicine , Federal University of Minas Gerais , Brazil
| | - Maria F Leite
- Department of Biochemistry and Immunology , Federal University of Minas Gerais , Brazil
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Mansur AAP, de Carvalho SM, Mansur HS. Bioengineered quantum dot/chitosan-tripeptide nanoconjugates for targeting the receptors of cancer cells. Int J Biol Macromol 2015; 82:780-9. [PMID: 26499085 DOI: 10.1016/j.ijbiomac.2015.10.047] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2015] [Revised: 10/14/2015] [Accepted: 10/16/2015] [Indexed: 11/19/2022]
Abstract
Nanobiomaterials can be engineered to recognize cancer-specific receptors at the cellular level for diagnostic and therapeutic purposes. In this work, we report the synthesis of novel multifunctional nanoconjugates composed of fluorescent inorganic semiconductor quantum dot (QD) cores and tripeptide-modified polysaccharide organic shells. These structures were designed for targeting and imaging the αvβ3 integrin receptors of cancer cells. Initially, chitosan was covalently bound with the RGD peptide using a crosslinker to form bioconjugates (RGD-chitosan), which were later utilized as capping ligands for the production of surface-functionalized CdS QDs via a single-step process in aqueous media at room temperature. These core-shell nanostructures were extensively characterized by UV-vis spectroscopy, photoluminescence (PL) spectroscopy, Fourier transform infrared spectroscopy (FTIR), transmission electron microscopy (TEM), zeta potential (ZP) and dynamic light scattering (DLS). The TEM images and the UV-vis absorption results indicated the formation of ultra-small CdS QD nanocrystals with average diameters between 2.0 and 3.0 nm. In addition, the PL results demonstrated that the nanobioconjugates exhibited intense green fluorescence under excitation. The CdS-RGD-chitosan systems were effective at specific targeting integrin when assayed in vitro using two model cell cultures, HEK 293 (non-cancerous human embryonic kidney cell) and SAOS (cancerous sarcoma osteogenic-derived cells) imaged using fluorescence microscopy.
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Affiliation(s)
- Alexandra A P Mansur
- Center of Nanoscience, Nanotechnology and Innovation-CeNano(2)I, Department of Metallurgical and Materials Engineering, Federal University of Minas Gerais, Av. Antônio Carlos, 6627, Escola de Engenharia, Bloco 2/2233, Pampulha, Belo Horizonte 31.270-901 MG, Brazil
| | - Sandhra M de Carvalho
- Center of Nanoscience, Nanotechnology and Innovation-CeNano(2)I, Department of Metallurgical and Materials Engineering, Federal University of Minas Gerais, Av. Antônio Carlos, 6627, Escola de Engenharia, Bloco 2/2233, Pampulha, Belo Horizonte 31.270-901 MG, Brazil
| | - Herman S Mansur
- Center of Nanoscience, Nanotechnology and Innovation-CeNano(2)I, Department of Metallurgical and Materials Engineering, Federal University of Minas Gerais, Av. Antônio Carlos, 6627, Escola de Engenharia, Bloco 2/2233, Pampulha, Belo Horizonte 31.270-901 MG, Brazil.
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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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Singh D, Kapahi H, Rashid M, Prakash A, Majeed ABA, Mishra N. Recent prospective of surface engineered Nanoparticles in the management of Neurodegenerative disorders. ARTIFICIAL CELLS NANOMEDICINE AND BIOTECHNOLOGY 2015; 44:780-91. [PMID: 26107112 DOI: 10.3109/21691401.2015.1029622] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Clinically, the therapeutic outcomes in neurodegenerative disorders (NDs) by drug treatment are very limited, and the most insurmountable obstacle in the treatment of NDs is the blood-brain barrier (BBB), which provides the highest level of protection from xenobiotics. A great deal of attention still needs to be paid to overcome these barriers, and surface-engineered polymeric nanoparticles are emerging as innovative tools that are able to interact with the biological system at a molecular level for the desired response. The present review covers the potential importance of surface-structure-engineered nanoparticles to overcome the BBB for good bioavailability, and the evaluation of drug therapy in NDs.
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Affiliation(s)
- Devendra Singh
- a Department of Pharmaceutics , I.S.F. College of Pharmacy , Moga, Punjab , India
| | - Himani Kapahi
- a Department of Pharmaceutics , I.S.F. College of Pharmacy , Moga, Punjab , India
| | - Muzamil Rashid
- a Department of Pharmaceutics , I.S.F. College of Pharmacy , Moga, Punjab , India
| | - Atish Prakash
- b Department of Pharmacology , I.S.F. College of Pharmacy , Moga, Punjab , India.,c Brain Research Laboratory, Department of Pharmacology , Faculty of Pharmacy, Universiti Teknologi MARA (UiTM) , 42300, Puncak Alam, Malaysia
| | - Abu Bakar Abdul Majeed
- c Brain Research Laboratory, Department of Pharmacology , Faculty of Pharmacy, Universiti Teknologi MARA (UiTM) , 42300, Puncak Alam, Malaysia
| | - Neeraj Mishra
- a Department of Pharmaceutics , I.S.F. College of Pharmacy , Moga, Punjab , India
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He X, Ma N. An overview of recent advances in quantum dots for biomedical applications. Colloids Surf B Biointerfaces 2014; 124:118-31. [DOI: 10.1016/j.colsurfb.2014.06.002] [Citation(s) in RCA: 65] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2014] [Revised: 05/23/2014] [Accepted: 06/01/2014] [Indexed: 12/23/2022]
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Recent advances in the field of bionanotechnology: an insight into optoelectric bacteriorhodopsin, quantum dots, and noble metal nanoclusters. SENSORS 2014; 14:19731-66. [PMID: 25340449 PMCID: PMC4239883 DOI: 10.3390/s141019731] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/29/2014] [Revised: 10/08/2014] [Accepted: 10/15/2014] [Indexed: 12/20/2022]
Abstract
Molecular sensors and molecular electronics are a major component of a recent research area known as bionanotechnology, which merges biology with nanotechnology. This new class of biosensors and bioelectronics has been a subject of intense research over the past decade and has found application in a wide variety of fields. The unique characteristics of these biomolecular transduction systems has been utilized in applications ranging from solar cells and single-electron transistors (SETs) to fluorescent sensors capable of sensitive and selective detection of a wide variety of targets, both organic and inorganic. This review will discuss three major systems in the area of molecular sensors and electronics and their application in unique technological innovations. Firstly, the synthesis of optoelectric bacteriorhodopsin (bR) and its application in the field of molecular sensors and electronics will be discussed. Next, this article will discuss recent advances in the synthesis and application of semiconductor quantum dots (QDs). Finally, this article will conclude with a review of the new and exciting field of noble metal nanoclusters and their application in the creation of a new class of fluorescent sensors.
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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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Salgado CL, Mansur AAP, Mansur HS, Monteiro FJM. Fluorescent bionanoprobes based on quantum dot-chitosan–O-phospho-l-serine conjugates for labeling human bone marrow stromal cells. RSC Adv 2014. [DOI: 10.1039/c4ra08247h] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Fluorescent biocompatible quantum dots functionalized with chitosan–O-phospho-l-serine nanoconjugates were synthesized and characterized for targeting and labeling human bone marrow stromal cells.
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Affiliation(s)
- Christiane L. Salgado
- INEB
- Instituto Nacional de Engenharia Biomédica
- Porto, Portugal
- FEUP
- Faculdade de Engenharia
| | - Alexandra A. P. Mansur
- Center of Nanoscience, Nanotechnology, and Innovation-CeNano2I
- Department of Metallurgical and Materials Engineering
- Federal University of Minas Gerais
- Brazil
| | - Herman S. Mansur
- Center of Nanoscience, Nanotechnology, and Innovation-CeNano2I
- Department of Metallurgical and Materials Engineering
- Federal University of Minas Gerais
- Brazil
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