1
|
Salgado CL, Mansur AAP, Mansur HS, Monteiro FJM. Bioengineered Fluorescent Nanoprobe Conjugates for Tracking Human Bone Cells: In Vitro Biocompatibility Analysis. MATERIALS 2021; 14:ma14164422. [PMID: 34442946 PMCID: PMC8399135 DOI: 10.3390/ma14164422] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Revised: 08/03/2021] [Accepted: 08/05/2021] [Indexed: 11/16/2022]
Abstract
Herein, we validated novel functionalized hybrid semiconductor bioconjugates made of fluorescent quantum dots (QD) with the surface capped by chitosan (polysaccharide) and chemically modified with O-phospho-L-serine (OPS) that are biocompatible with different human cell sources. The conjugation with a directing signaling molecule (OPS) allows preferential accumulation in human bone mesenchymal stromal cells (HBMSC). The chitosan (Chi) shell with the fluorescent CdS core was characterized by spectroscopical (UV spectrophotometry and photoluminescence), by morphological techniques (Transmission Electron Microscopy (TEM)) and showed small size (ø 2.3 nm) and a stable photoluminescence emission band. The in vitro biocompatibility results were not dependent on the polysaccharide chain length (Chi with higher and lower molecular weight) but were remarkably affected by the surface modification (Chi or Chi-OPS). In addition, the efficiency of nanoparticles uptake by the cells was dependent on cells nature (human primary cells or cell lines) and tissue source (bone or skin) in the presence or absence of the OPS modification. The complex cellular uptake pathways involved in the cell labeling with the nanoparticles do not interfere on the normal cellular biology (adhesion and proliferation), osteogenic differentiation, and gene expression. The bone cells particles uptake evaluation showed a possible pathway by Caveolin-1 that regulates cell transduction in the membrane’s Caveolae. Caveolae mediates non-specific endocytosis, and it is upregulated in HBMSC. The OPS-modified nanoparticles promoted an intense intracellular trafficking by the HBMSCs that showed late-osteoblast phenotype with an increase of extracellular matrix (ECM) mineralization (Alizarin red and Von Kossa staining for calcium phosphate crystals). In this work, the OPS modified bioconjugated QD proved to be a reliable and stable fluorescent bioprobe for cell imaging and targeting research that could also help in clarifying some cellular mechanisms of particles intracellular traffic through the cytoplasmic membrane and osteogenic differentiation induction. The in vitro HBMSC’s biocompatibility responses indicated that the OPS-modified chitosan QDs have a prospective future in laboratory and pre-clinical applications such as bioimaging analysis and for ex-vivo cellular evaluation of biomedical implants.
Collapse
Affiliation(s)
- Christiane L. Salgado
- i3S-Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Rua Alfredo Allen, 208, 4200-135 Porto, Portugal;
- INEB, Instituto Nacional de Engenharia Biomédica, 4200-135 Porto, Portugal
- Correspondence:
| | - Alexandra A. P. Mansur
- Center of Nanoscience, Nanotechnology, and Innovation-CeNano2I, Department of Metallurgical and Materials Engineering, Federal University of Minas Gerais-UFMG, Av. Antônio Carlos, 6627, Belo Horizonte 31270-901, Brazil; (A.A.P.M.); (H.S.M.)
- Department of Metallurgical and Materials Engineering, Federal University of Minas Gerais-UFMG, Av. Antônio Carlos, 6627, Belo Horizonte 31270-901, Brazil
| | - Herman S. Mansur
- Center of Nanoscience, Nanotechnology, and Innovation-CeNano2I, Department of Metallurgical and Materials Engineering, Federal University of Minas Gerais-UFMG, Av. Antônio Carlos, 6627, Belo Horizonte 31270-901, Brazil; (A.A.P.M.); (H.S.M.)
- Department of Metallurgical and Materials Engineering, Federal University of Minas Gerais-UFMG, Av. Antônio Carlos, 6627, Belo Horizonte 31270-901, Brazil
| | - Fernando J. M. Monteiro
- i3S-Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Rua Alfredo Allen, 208, 4200-135 Porto, Portugal;
- INEB, Instituto Nacional de Engenharia Biomédica, 4200-135 Porto, Portugal
- FEUP, Faculdade de Engenharia, Departamento de Engenharia Metalúrgica e de Materiais, Universidade do Porto, 4200-465 Porto, Portugal
| |
Collapse
|
2
|
Caires AJ, Mansur HS, Mansur AAP, Carvalho SM, Lobato ZIP, Dos Reis JKP. Gold nanoparticle-carboxymethyl cellulose nanocolloids for detection of human immunodeficiency virus type-1 (HIV-1) using laser light scattering immunoassay. Colloids Surf B Biointerfaces 2019; 177:377-388. [PMID: 30785035 DOI: 10.1016/j.colsurfb.2019.02.025] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2018] [Revised: 02/07/2019] [Accepted: 02/13/2019] [Indexed: 02/07/2023]
Abstract
It is estimated that over 100 million people have been infected with human immunodeficiency virus (HIV-1) resulting in approximately 30 million deaths globally. Herein, we designed and developed novel nano-immunoconjugates using gold nanoparticles (AuNPs) and carboxymethylcellulose (CMC) biopolymer, which performed simultaneously as an eco-friendly in situ reducing agent and surface stabilizing ligand for the aqueous colloidal process. These AuNPs-CMC nanocolloids were biofunctionalized with the gp41 glycoprotein receptor (AuNPs-CMC-gp41) or HIV monoclonal antibodies (AuNPs-CMC_PolyArg-abHIV) for detection using the laser light scattering immunoassay (LIA). These AuNPs-CMC bioengineered nanoconjugates were extensively characterized by morphological and physicochemical methods, which demonstrated the formation of spherical nanocrystalline colloidal AuNPs with the average size from 12 to 20 nm and surface plasmon resonance peak at 520 nm. Thus, stable nanocolloids were formed with core-shell nanostructures composed of AuNPs and biomacromolecules of CMC-gp41, which were cytocompatible based on in vitro cell viability results. The AuNPs-CMC-gp41 nanoconjugates were tested against HIV monoclonal antibodies conjugates (AuNPs-CMC_PolyArg-abHIV) using the light scattering immunoassay (LIA) where they behaved as active nanoprobes for the detection at nM level of HIV-1 antigenic proteins. This strategy offers a novel nanoplatform for creating bioprobes using green nanotechnology for the detection of HIV-1 and other virus-related diseases.
Collapse
Affiliation(s)
- A J Caires
- Center of Nanoscience, Nanotechnology and Innovation - CeNano(2)I, Federal University of Minas Gerais - UFMG, Av. Antônio Carlos, 6627, Belo Horizonte, MG, Brazil
| | - H S Mansur
- Center of Nanoscience, Nanotechnology and Innovation - CeNano(2)I, Federal University of Minas Gerais - UFMG, Av. Antônio Carlos, 6627, Belo Horizonte, MG, Brazil.
| | - A A P Mansur
- Center of Nanoscience, Nanotechnology and Innovation - CeNano(2)I, Federal University of Minas Gerais - UFMG, Av. Antônio Carlos, 6627, Belo Horizonte, MG, Brazil
| | - S M Carvalho
- Center of Nanoscience, Nanotechnology and Innovation - CeNano(2)I, Federal University of Minas Gerais - UFMG, Av. Antônio Carlos, 6627, Belo Horizonte, MG, Brazil; Department of Preventive Veterinary Medicine, Veterinary School, Federal University of Minas Gerais - UFMG, Brazil
| | - Z I P Lobato
- Department of Preventive Veterinary Medicine, Veterinary School, Federal University of Minas Gerais - UFMG, Brazil
| | - J K P Dos Reis
- Department of Preventive Veterinary Medicine, Veterinary School, Federal University of Minas Gerais - UFMG, Brazil
| |
Collapse
|
3
|
Carvalho SM, Leonel AG, Mansur AAP, Carvalho IC, Krambrock K, Mansur HS. Bifunctional magnetopolymersomes of iron oxide nanoparticles and carboxymethylcellulose conjugated with doxorubicin for hyperthermo-chemotherapy of brain cancer cells. Biomater Sci 2019; 7:2102-2122. [DOI: 10.1039/c8bm01528g] [Citation(s) in RCA: 45] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Magnetopolymersomes for potential multimodal brain cancer therapy – “nanoheaters meet drug nanocarriers”.
Collapse
Affiliation(s)
- Sandhra M. Carvalho
- Center of Nanoscience
- Nanotechnology and Innovation – CeNano2I
- Federal University of Minas Gerais – UFMG
- 6627 – Belo Horizonte/MG
- Brazil
| | - Alice G. Leonel
- Center of Nanoscience
- Nanotechnology and Innovation – CeNano2I
- Federal University of Minas Gerais – UFMG
- 6627 – Belo Horizonte/MG
- Brazil
| | - Alexandra A. P. Mansur
- Center of Nanoscience
- Nanotechnology and Innovation – CeNano2I
- Federal University of Minas Gerais – UFMG
- 6627 – Belo Horizonte/MG
- Brazil
| | - Isadora C. Carvalho
- Center of Nanoscience
- Nanotechnology and Innovation – CeNano2I
- Federal University of Minas Gerais – UFMG
- 6627 – Belo Horizonte/MG
- Brazil
| | - Klaus Krambrock
- Department of Physics
- Federal University of Minas Gerais
- Brazil
| | - Herman S. Mansur
- Center of Nanoscience
- Nanotechnology and Innovation – CeNano2I
- Federal University of Minas Gerais – UFMG
- 6627 – Belo Horizonte/MG
- Brazil
| |
Collapse
|
4
|
Capanema NS, Mansur AA, Carvalho SM, Carvalho IC, Chagas P, de Oliveira LCA, Mansur HS. Bioengineered carboxymethyl cellulose-doxorubicin prodrug hydrogels for topical chemotherapy of melanoma skin cancer. Carbohydr Polym 2018; 195:401-412. [DOI: 10.1016/j.carbpol.2018.04.105] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2018] [Revised: 04/02/2018] [Accepted: 04/26/2018] [Indexed: 11/16/2022]
|
5
|
Mansur AAP, Mansur HS, Mansur RL, de Carvalho FG, Carvalho SM. Bioengineered II-VI semiconductor quantum dot-carboxymethylcellulose nanoconjugates as multifunctional fluorescent nanoprobes for bioimaging live cells. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2018; 189:393-404. [PMID: 28843194 DOI: 10.1016/j.saa.2017.08.049] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/14/2017] [Accepted: 08/16/2017] [Indexed: 06/07/2023]
Abstract
Colloidal semiconductor quantum dots (QDs) are light-emitting ultra-small nanoparticles, which have emerged as a new class of nanoprobes with unique optical properties for bioimaging and biomedical diagnostic. However, to be used for most biomedical applications the biocompatibility and water-solubility are mandatory that can achieved through surface modification forming QD-nanoconjugates. In this study, semiconductor II-VI quantum dots of type MX (M=Cd, Pb, Zn, X=S) were directly synthesized in aqueous media and at room temperature using carboxymethylcellulose sodium salt (CMC) behaving simultaneously as stabilizing and surface biofunctional ligand. These nanoconjugates were extensively characterized using UV-visible spectroscopy, photoluminescence spectroscopy, X-ray photoelectron spectroscopy, Fourier transform infrared spectroscopy, X-ray diffraction, transmission electron microscopy, dynamic light scattering and zeta potential. The results demonstrated that the biopolymer was effective on nucleating and stabilizing the colloidal nanocrystals of CdS, ZnS, and PbS with the average diameter ranging from 2.0 to 5.0nm depending on the composition of the semiconductor core, which showed quantum-size confinement effect. These QD/polysaccharide conjugates showed luminescent activity from UV-visible to near-infrared range of the spectra under violet laser excitation. Moreover, the bioassays performed proved that these novel nanoconjugates were biocompatible and behaved as composition-dependent fluorescent nanoprobes for in vitro live cell bioimaging with very promising perspectives to be used in numerous biomedical applications and nanomedicine.
Collapse
Affiliation(s)
- 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.
| | - Rafael L Mansur
- Center of Nanoscience, Nanotechnology and Innovation - CeNano2I, Department of Metallurgical and Materials Engineering, Federal University of Minas Gerais, Brazil
| | - Fernanda G de Carvalho
- Center of Nanoscience, Nanotechnology and Innovation - CeNano2I, Department of Metallurgical and Materials Engineering, Federal University of Minas Gerais, Brazil
| | - Sandhra M Carvalho
- Center of Nanoscience, Nanotechnology and Innovation - CeNano2I, Department of Metallurgical and Materials Engineering, Federal University of Minas Gerais, Brazil
| |
Collapse
|
6
|
Antony JV, Pillai JJ, Kurian P, Nampoori VPN, Kochimoolayil GE. Photoluminescence and optical nonlinearity of CdS quantum dots synthesized in a functional copolymer hydrogel template. NEW J CHEM 2017. [DOI: 10.1039/c6nj03665a] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The acrylic acid content in the copolymer influences the size of the CdS QDs as well as the linear and nonlinear optical properties of the copolymer.
Collapse
Affiliation(s)
- Jolly Vakayil Antony
- Department of Polymer Science and Rubber Technology
- Cochin University of Science and Technology
- Cochin
- India
- Department of Chemistry
| | - Jisha J. Pillai
- Department of Polymer Science and Rubber Technology
- Cochin University of Science and Technology
- Cochin
- India
| | - Philip Kurian
- Department of Polymer Science and Rubber Technology
- Cochin University of Science and Technology
- Cochin
- India
| | - V. P. N. Nampoori
- International School of Photonics
- Cochin University of Science and Technology
- Cochin
- India
| | - George Elias Kochimoolayil
- Department of Polymer Science and Rubber Technology
- Cochin University of Science and Technology
- Cochin
- India
| |
Collapse
|
7
|
|
8
|
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.
Collapse
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.
| |
Collapse
|
9
|
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]
|
10
|
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.
Collapse
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
| |
Collapse
|
11
|
Kozhevnikova NS, Vorokh AS, Uritskaya AA. Cadmium sulfide nanoparticles prepared by chemical bath deposition. RUSSIAN CHEMICAL REVIEWS 2015. [DOI: 10.1070/rcr4452] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
|
12
|
Li L, Feng D, Zhao J, Guo Z, Zhang Y. Simultaneous fluoroimmunoassay of two tumor markers based on CdTe quantum dots and gold nanocluster coated-silica nanospheres as labels. RSC Adv 2015. [DOI: 10.1039/c5ra19262e] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Fluoroimmunoassay for simultaneous detection of CEA and AFP.
Collapse
Affiliation(s)
- Lihua Li
- College of Chemistry and Materials Science
- The Key Laboratory of Functional Molecular Solids
- Ministry of Education
- Anhui Laboratory of Molecule-Based Materials and Anhui Key Laboratory of Chemo-Biosensing
- Anhui Normal University
| | - Dexiang Feng
- College of Chemistry and Materials Science
- The Key Laboratory of Functional Molecular Solids
- Ministry of Education
- Anhui Laboratory of Molecule-Based Materials and Anhui Key Laboratory of Chemo-Biosensing
- Anhui Normal University
| | - Junqing Zhao
- College of Chemistry and Materials Science
- The Key Laboratory of Functional Molecular Solids
- Ministry of Education
- Anhui Laboratory of Molecule-Based Materials and Anhui Key Laboratory of Chemo-Biosensing
- Anhui Normal University
| | - Zilin Guo
- College of Chemistry and Materials Science
- The Key Laboratory of Functional Molecular Solids
- Ministry of Education
- Anhui Laboratory of Molecule-Based Materials and Anhui Key Laboratory of Chemo-Biosensing
- Anhui Normal University
| | - Yuzhong Zhang
- College of Chemistry and Materials Science
- The Key Laboratory of Functional Molecular Solids
- Ministry of Education
- Anhui Laboratory of Molecule-Based Materials and Anhui Key Laboratory of Chemo-Biosensing
- Anhui Normal University
| |
Collapse
|
13
|
Antony JV, Kurian P, Vadakkedathu NPN, Kochimoolayil GE. In Situ Synthesis of CdS Quantum Dot–Partially Sulfonated Polystyrene Composite: Characterization and Optical Properties. Ind Eng Chem Res 2014. [DOI: 10.1021/ie402911w] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jolly Vakayil Antony
- Department
of Polymer Science and Rubber Technology, Cochin University of Science and Technology, Cochin, Kerala, India 682022
- Department
of Chemistry, Government Brennen College, Thalassery, Kerala, India 670106
| | - Philip Kurian
- Department
of Polymer Science and Rubber Technology, Cochin University of Science and Technology, Cochin, Kerala, India 682022
| | | | - George Elias Kochimoolayil
- Department
of Polymer Science and Rubber Technology, Cochin University of Science and Technology, Cochin, Kerala, India 682022
| |
Collapse
|
14
|
Santos JCC, Mansur AAP, Ciminelli VST, Mansur HS. Nanocomposites of Poly(Vinyl Alcohol)/Functionalized-Multiwall Carbon Nanotubes Conjugated With Glucose Oxidase for Potential Application as Scaffolds in Skin Wound Healing. INT J POLYM MATER PO 2013. [DOI: 10.1080/00914037.2013.812090] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
|
15
|
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.
Collapse
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
| |
Collapse
|
16
|
Santos JCC, Mansur AAP, Mansur HS. One-step biofunctionalization of quantum dots with chitosan and N-palmitoyl chitosan for potential biomedical applications. Molecules 2013; 18:6550-72. [PMID: 23736790 PMCID: PMC6269993 DOI: 10.3390/molecules18066550] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2013] [Revised: 05/27/2013] [Accepted: 05/29/2013] [Indexed: 11/25/2022] Open
Abstract
Carbohydrates and derivatives (such as glycolipids, glycoproteins) are of critical importance for cell structure, metabolism and functions. The effects of carbohydrate and lipid metabolic imbalances most often cause health disorders and diseases. In this study, new carbohydrate-based nanobioconjugates were designed and synthesized at room temperature using a single-step aqueous route combining chitosan and acyl-modified chitosan with fluorescent inorganic nanoparticles. N-palmitoyl chitosan (C-Pal) was prepared aiming at altering the lipophilic behavior of chitosan (CHI), but also retaining its reasonable water solubility for potential biomedical applications. CHI and C-Pal were used for producing biofunctionalized CdS quantum dots (QDs) as colloidal water dispersions. Fourier transform infrared spectroscopy (FTIR), thermal analysis (TG/DSC), surface contact angle (SCA), and degree of swelling (DS) in phosphate buffer were used to characterize the carbohydrates. Additionally, UV-Visible spectroscopy (UV-Vis), photoluminescence spectroscopy (PL), dynamic light scattering (DLS), scanning and transmission electron microscopy (SEM/TEM) were used to evaluate the precursors and nanobioconjugates produced. The FTIR spectra associated with the thermal analysis results have undoubtedly indicated the presence of N-palmitoyl groups "grafted" to the chitosan chain (C-Pal) which significantly altered its behavior towards water swelling and surface contact angle as compared to the unmodified chitosan. Furthermore, the results have evidenced that both CHI and C-Pal performed as capping ligands on nucleating and stabilizing colloidal CdS QDs with estimated average size below 3.5 nm and fluorescent activity in the visible range of the spectra. Therefore, an innovative "one-step" process was developed via room temperature aqueous colloidal chemistry for producing biofunctionalized quantum dots using water soluble carbohydrates tailored with amphiphilic behavior offering potential applications as fluorescent biomarkers in the investigation of glycoconjugates for the nutrition, biology, pharmaceutical, and medicine fields.
Collapse
Affiliation(s)
- Joyce C C Santos
- 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, Pampulha, Belo Horizonte/MG, 31.270-901, Brazil.
| | | | | |
Collapse
|
17
|
Surface modified fluorescent quantum dots with neurotransmitter ligands for potential targeting of cell signaling applications. Colloids Surf B Biointerfaces 2013; 111:60-70. [PMID: 23777793 DOI: 10.1016/j.colsurfb.2013.05.030] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2013] [Revised: 05/06/2013] [Accepted: 05/20/2013] [Indexed: 11/22/2022]
Abstract
The possibility of combining nanotechnology with nanomedicine opens a broad field of research which may truly revolutionize our society. The neural system plays a crucial role in the human body, and most related diseases can dramatically change the quality of life. Thus, the present study reports a novel approach for using neurotransmitters as ligands in the synthesis of surface-modified fluorescent nanocrystals for potential use in cell labeling applications. Briefly, CdS quantum dots (QDs) were prepared using L-glutamic and L-aspartic as surface capping agents via a one-step chemical processing method, which resulted in stable aqueous colloidal systems at room temperature and ambient pressure. UV-visible spectroscopy, photoluminescence spectroscopy (PL), Fourier transform infrared (FTIR) spectroscopy, and transmission electron microscopy (TEM) were used to characterize the synthesis and relative stability of peptide-capped CdS nanocrystals. The results demonstrate that both ligands were effective in nucleating and stabilizing CdS quantum dots in colloidal aqueous suspensions, with an estimated dimension below 3.3 nm and with fluorescence activity. Thus, novel nanohybrids were developed based on QDs bioconjugated to surface-active neurotransmitter moieties suitable for investigation as potential biomarkers in cell targeting and signaling applications.
Collapse
|
18
|
Zhang W, Ge X, Tang Y, Du D, Liu D, Lin Y. Nanoparticle-based immunochromatographic test strip with fluorescent detector for quantification of phosphorylated acetylcholinesterase: an exposure biomarker of organophosphorus agents. Analyst 2013; 138:5431-6. [DOI: 10.1039/c3an00621b] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
19
|
Mansur HS, Mansur AAP, Curti E, De Almeida MV. Functionalized-chitosan/quantum dot nano-hybrids for nanomedicine applications: towards biolabeling and biosorbing phosphate metabolites. J Mater Chem B 2013; 1:1696-1711. [DOI: 10.1039/c3tb00498h] [Citation(s) in RCA: 108] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
|
20
|
Bioconjugation of quantum-dots with chitosan and N,N,N-trimethyl chitosan. Carbohydr Polym 2012; 90:189-96. [DOI: 10.1016/j.carbpol.2012.05.022] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2012] [Revised: 05/01/2012] [Accepted: 05/05/2012] [Indexed: 11/30/2022]
|