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Gao LX, Hao H, Yu YQ, Chen JL, Chen WQ, Gong ZD, Liu Y, Jiang FL. Protein Labeling Facilitates the Understanding of Protein Corona Formation via Fluorescence Resonance Energy Transfer and Fluorescence Correlation Spectroscopy. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023; 39:15275-15284. [PMID: 37853521 DOI: 10.1021/acs.langmuir.3c01986] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2023]
Abstract
Once nanoparticles enter into the biological milieu, nanoparticle-biomacromolecule complexes, especially the protein corona, swiftly form, which cause obvious effects on the physicochemical properties of both nanoparticles and proteins. Here, the thermodynamic parameters of the interactions between water-soluble GSH-CdSe/ZnS core/shell quantum dots (GSH-QDs) and human serum albumin (HSA) were investigated with the aid of labeling fluorescence of HSA. It was proved that the labeling fluorescence originating from a fluorophore (BDP-CN for instance) could be used to investigate the interactions between QDs and HSA. Gel electrophoresis displayed that the binding ratio between HSA and QDs was ∼2:1 by direct visualization. Fluorescence resonance energy transfer (FRET) results indicated that the distance between the QDs and the fluorophore BDP-CN in HSA was 7.2 nm, which indicated that the distance from the fluorophore to the surface of the QDs was ∼4.8 nm. Fluorescence correlation spectroscopy (FCS) results showed that HSA formed a monolayer of a protein corona with a thickness of 5.5 nm. According to the spatial structure of HSA, we could speculate that the binding site of QDs was located at the side edge (not the triangular plane) of HSA with an equilateral triangular prism. The elaboration of the thermodynamic parameters, binding ratio, and interaction orientation will highly improve the fundamental understanding of the formation of protein corona. This work has guiding significance for the exploration of the interactions between proteins and nanomaterials.
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Affiliation(s)
- Lian-Xun Gao
- Sauvage Center for Molecular Sciences, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, P. R. China
| | - Hao Hao
- Sauvage Center for Molecular Sciences, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, P. R. China
| | - Ying-Qi Yu
- Sauvage Center for Molecular Sciences, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, P. R. China
| | - Ji-Lei Chen
- Sauvage Center for Molecular Sciences, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, P. R. China
| | - Wen-Qi Chen
- Sauvage Center for Molecular Sciences, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, P. R. China
| | - Zuo-Dong Gong
- Sauvage Center for Molecular Sciences, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, P. R. China
| | - Yi Liu
- Sauvage Center for Molecular Sciences, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, P. R. China
- School of Chemical and Environmental Engineering, Wuhan Polytechnic University, Wuhan 430023, P. R. China
| | - Feng-Lei Jiang
- Sauvage Center for Molecular Sciences, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, P. R. China
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Yu YQ, Chen WQ, Li XH, Liu M, He XH, Liu Y, Jiang FL. Quantum Dots Meet Enzymes: Hydrophobicity of Surface Ligands and Size Do Matter. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023; 39:3967-3978. [PMID: 36877959 DOI: 10.1021/acs.langmuir.2c03283] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Colloidal quantum dots (QDs) are a class of representative fluorescent nanomaterials with tunable, bright, and sharp fluorescent emission, with promising biomedical applications. However, their effects on biological systems are not fully elucidated. In this work, we investigated the interactions between QDs with different surface ligands and different particle sizes and α-chymotrypsin (ChT) from the thermodynamic and kinetic perspectives. Enzymatic activity experiments demonstrated that the catalytic activity of ChT was strongly inhibited by QDs coated with dihydrolipoic acid (DHLA-QDs) with noncompetitive inhibitions, whereas the QDs coated with glutathione (GSH-QDs) had weak effects. Furthermore, kinetics studies showed that different particle sizes of DHLA-QDs all had high suppressive effects on the catalytic activity of ChT. It was found that DHLA-QDs with larger particle sizes had stronger inhibition effects because more ChT molecules were bound onto the surface of QDs. This work highlights the importance of hydrophobic ligands and particle sizes of QDs, which should be considered as the primary influencing factors in the assessment of biosafety. Meanwhile, the results herein can also inspire the design of nano inhibitors.
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Affiliation(s)
- Ying-Qi Yu
- Sauvage Center for Molecular Sciences, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, Hubei 430072, P. R. China
| | - Wen-Qi Chen
- Sauvage Center for Molecular Sciences, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, Hubei 430072, P. R. China
| | - Xiao-Han Li
- Sauvage Center for Molecular Sciences, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, Hubei 430072, P. R. China
| | - Meng Liu
- Sauvage Center for Molecular Sciences, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, Hubei 430072, P. R. China
| | - Xiao-Hang He
- Sauvage Center for Molecular Sciences, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, Hubei 430072, P. R. China
| | - Yi Liu
- Sauvage Center for Molecular Sciences, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, Hubei 430072, P. R. China
- School of Chemical and Environmental Engineering, Wuhan Polytechnic University, Wuhan, Hubei 430023, P. R. China
- State Key Laboratory of Separation Membranes and Membrane Processes, School of Chemistry, Tiangong University, Tianjin 300387, P. R. China
| | - Feng-Lei Jiang
- Sauvage Center for Molecular Sciences, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, Hubei 430072, P. R. China
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3
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Wang J, Hao K, Yu F, Shen L, Wang F, Yang J, Su C. Field application of nanoliposomes delivered quercetin by inhibiting specific hsp70 gene expression against plant virus disease. J Nanobiotechnology 2022; 20:16. [PMID: 34983536 PMCID: PMC8725512 DOI: 10.1186/s12951-021-01223-6] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2021] [Accepted: 12/22/2021] [Indexed: 01/12/2023] Open
Abstract
BACKGROUND The annual economic loss caused by plant viruses exceeds 10 billion dollars due to the lack of ideal control measures. Quercetin is a flavonol compound that exerts a control effect on plant virus diseases, but its poor solubility and stability limit the control efficiency. Fortunately, the development of nanopesticides has led to new ideas. RESULTS In this study, 117 nm quercetin nanoliposomes with excellent stability were prepared from biomaterials, and few surfactants and stabilizers were added to optimize the formula. Nbhsp70er-1 and Nbhsp70c-A were found to be the target genes of quercetin, through abiotic and biotic stress, and the nanoliposomes improved the inhibitory effect at the gene and protein levels by 33.6 and 42%, respectively. Finally, the results of field experiment showed that the control efficiency was 38% higher than that of the conventional quercetin formulation and higher than those of other antiviral agents. CONCLUSION This research innovatively reports the combination of biological antiviral agents and nanotechnology to control plant virus diseases, and it significantly improved the control efficiency and reduced the use of traditional chemical pesticides.
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Affiliation(s)
- Jie Wang
- Key Laboratory of Tobacco Pest Monitoring Controlling & Integrated Management, Tobacco Research Institute of Chinese Academy of Agricultural Sciences, Qingdao, 266101, China
| | - Kaiqiang Hao
- College of Plant Protection, Shenyang Agricultural University, Shenyang, 110866, China
| | - Fangfei Yu
- Key Laboratory of Tobacco Pest Monitoring Controlling & Integrated Management, Tobacco Research Institute of Chinese Academy of Agricultural Sciences, Qingdao, 266101, China
| | - Lili Shen
- Key Laboratory of Tobacco Pest Monitoring Controlling & Integrated Management, Tobacco Research Institute of Chinese Academy of Agricultural Sciences, Qingdao, 266101, China
| | - Fenglong Wang
- Key Laboratory of Tobacco Pest Monitoring Controlling & Integrated Management, Tobacco Research Institute of Chinese Academy of Agricultural Sciences, Qingdao, 266101, China
| | - Jinguang Yang
- Key Laboratory of Tobacco Pest Monitoring Controlling & Integrated Management, Tobacco Research Institute of Chinese Academy of Agricultural Sciences, Qingdao, 266101, China.
| | - Chenyu Su
- Key Laboratory of Tobacco Pest Monitoring Controlling & Integrated Management, Tobacco Research Institute of Chinese Academy of Agricultural Sciences, Qingdao, 266101, China.
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4
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Yue HL, Hu YJ, Chen J, Bai AM, Ouyang Y. Green synthesis and physical characterization of Au nanoparticles and their interaction with bovine serum albumin. Colloids Surf B Biointerfaces 2014; 122:107-114. [DOI: 10.1016/j.colsurfb.2014.06.055] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2014] [Revised: 06/02/2014] [Accepted: 06/24/2014] [Indexed: 10/25/2022]
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5
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Zhang J, Li R, Jiang FL, Zhou B, Luo QY, Yu QLY, Han XL, Lin Y, He H, Liu Y, Wang YL. An electrochemical and surface plasmon resonance study of adsorption actions of DNA by Escherichia coli. Colloids Surf B Biointerfaces 2014; 117:68-74. [DOI: 10.1016/j.colsurfb.2014.01.041] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2013] [Revised: 01/16/2014] [Accepted: 01/24/2014] [Indexed: 10/25/2022]
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Ali MA, Srivastava S, Pandey MK, Agrawal VV, John R, Malhotra BD. Protein–Conjugated Quantum Dots Interface: Binding Kinetics and Label-Free Lipid Detection. Anal Chem 2014; 86:1710-8. [DOI: 10.1021/ac403543g] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Md. Azahar Ali
- Department
of Science and Technology Centre on Biomolecular Electronics, Biomedical
Instrumentation Section, CSIR-National Physical Laboratory, Dr. K. S.
Krishnan Marg, New Delhi, Delhi 110012, India
- Indian Institute of Technology Hyderabad, Ordnance
Factory Estate, Yeddumailaram, Hyderabad, Andhra Pradesh 502205, India
| | - S. Srivastava
- Department
of Science and Technology Centre on Biomolecular Electronics, Biomedical
Instrumentation Section, CSIR-National Physical Laboratory, Dr. K. S.
Krishnan Marg, New Delhi, Delhi 110012, India
| | - M. K. Pandey
- Department
of Science and Technology Centre on Biomolecular Electronics, Biomedical
Instrumentation Section, CSIR-National Physical Laboratory, Dr. K. S.
Krishnan Marg, New Delhi, Delhi 110012, India
| | - Ved V. Agrawal
- Department
of Science and Technology Centre on Biomolecular Electronics, Biomedical
Instrumentation Section, CSIR-National Physical Laboratory, Dr. K. S.
Krishnan Marg, New Delhi, Delhi 110012, India
| | - R. John
- Indian Institute of Technology Hyderabad, Ordnance
Factory Estate, Yeddumailaram, Hyderabad, Andhra Pradesh 502205, India
| | - B. D. Malhotra
- Department
of Biotechnology, Delhi Technological University, Main Bawana Road, Shahbad Daulatpur, Delhi 110042, India
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7
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Luo QY, Lin Y, Peng J, Liu SL, Zhang ZL, Tian ZQ, Pang DW. Evaluation of nonspecific interactions between quantum dots and proteins. Phys Chem Chem Phys 2014; 16:7677-80. [DOI: 10.1039/c4cp00572d] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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8
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Systematic investigation of interactions between papain and MPA-capped CdTe quantum dots. Mol Biol Rep 2013; 40:5781-9. [DOI: 10.1007/s11033-013-2681-5] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2013] [Accepted: 09/14/2013] [Indexed: 10/26/2022]
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9
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Huang S, Qiu H, Xiao Q, Huang C, Su W, Hu B. A Simple QD–FRET Bioprobe for Sensitive and Specific Detection of Hepatitis B Virus DNA. J Fluoresc 2013; 23:1089-98. [DOI: 10.1007/s10895-013-1238-2] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2013] [Accepted: 05/14/2013] [Indexed: 01/24/2023]
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10
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Zheng H, Mortensen LJ, DeLouise LA. Thiol antioxidant-functionalized CdSe/ZnS quantum dots: synthesis, characterization, cytotoxicity. J Biomed Nanotechnol 2013; 9:382-92. [PMID: 23620993 PMCID: PMC4749031 DOI: 10.1166/jbn.2013.1561] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Nanotechnology is a growing industry with wide ranging applications in consumer product and technology development. In the biomedical field, nanoparticles are finding increasing use as imaging agents for biomolecular labeling and tumor targeting. The nanoparticle physiochemical properties must be tailored for the specific application. For example, nanoparticle chemical and physical stability in the biological milieu (no oxidation, aggregation, agglomeration or toxicity) are often required. Nanoparticles used for biomolecular fluorescent imaging should also have high quantum yield (QY). The aim of this paper is to examine the QY, stability, and cell toxicity of a series of positive, negative and neutral surface charge quantum dot (QD) nanoparticles. Simple protocols are described to prepare water soluble QDs by modifying the surface with thiol containing antioxidant ligands and polymers keeping the QD core/shell composition constant. The ligands used to produce negatively charged QDs include glutathione (GSH), N-acetyl-L-cysteine (NAC), dihydrolipoic acid (DHLA), tiopronin (TP), bucilliamine (BUC), and mercaptosuccinic acid (MSA). Ligands used to produce positively charged QDs include cysteamine (CYS) and polyethylenimine (PEI). Dithiothreitol (DTT) was used to produce neutral charged QDs. Commercially available nonaqueous octadecylamine (ODA) capped QDs served as the starting material. Our results suggest that QD uptake and cytotoxicity are both dependent on surface ligand coating composition. The negative charged GSH coated QDs show superior performance exhibiting low cytotoxicity, high stability, high QY and therefore are best suited for bioimaging applications. PEI coated QD also show superior performance exhibiting high QY and stability. However, they are considerably more cytotoxic due to their high positive charge which is an advantageous property that can be exploited for gene transfection and/or tumor targeting applications. The synthetic procedures described are straightforward and can be easily adapted in most laboratory settings.
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Affiliation(s)
- Hong Zheng
- Department of Dermatology, University of Rochester, Rochester NY, 14642, USA
| | - Luke J. Mortensen
- Department of Biomedical Engineering, University of Rochester, Rochester NY, 14642, USA
| | - Lisa A. DeLouise
- Department of Dermatology, University of Rochester, Rochester NY, 14642, USA
- Department of Biomedical Engineering, University of Rochester, Rochester NY, 14642, USA
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11
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Simple and sensitive determination of papain by resonance light-scattering with CdSe quantum dots. Colloids Surf B Biointerfaces 2013; 102:146-51. [DOI: 10.1016/j.colsurfb.2012.07.026] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2012] [Revised: 07/17/2012] [Accepted: 07/18/2012] [Indexed: 11/18/2022]
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12
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Systematically investigations of conformation and thermodynamics of HSA adsorbed to different sizes of CdTe quantum dots. Colloids Surf B Biointerfaces 2013; 102:76-82. [DOI: 10.1016/j.colsurfb.2012.08.028] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2012] [Revised: 08/03/2012] [Accepted: 08/16/2012] [Indexed: 12/19/2022]
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13
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Systematically investigation of interactions between BSA and different charge-capped CdSe/ZnS quantum dots. J Photochem Photobiol A Chem 2012. [DOI: 10.1016/j.jphotochem.2012.08.019] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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14
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Abstract
Surface plasmon resonance imaging (SPRI) is a powerful tool for simple, fast and cheap nucleic acid detection. Great efforts have been made during the last decade with the aim of developing even more sensitive and specific SPRI-based methods to be used for the direct detection of DNA and RNA. Here, after a description of the fundamentals of SPRI, the state of the art of recent platform and assay developments is presented, with special attention given to advances in SPRI signal enhancement procedures.
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Affiliation(s)
- Roberta D'Agata
- Dipartimento di Scienze Chimiche, Università di Catania, Catania, Italy
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15
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Xiao Q, Qiu T, Huang S, Liu Y, He Z. Preparation and biological effect of nucleotide-capped CdSe/ZnS quantum dots on Tetrahymena thermophila. Biol Trace Elem Res 2012; 147:346-53. [PMID: 22161288 DOI: 10.1007/s12011-011-9286-4] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/07/2011] [Accepted: 11/22/2011] [Indexed: 10/14/2022]
Abstract
In this paper, we described the preparation and characterization of different types of modified CdSe/ZnS quantum dots (QDs) and explored the biological effects of QDs with different surface modifications on the whole growth of unicellular protozoan Tetrahymena thermophila BF(5) using a thermal activity monitor air isothermal microcalorimeter. Our results demonstrated that adenosine 5'-monophosphate (AMP) showed stronger interaction with QDs than other types of nucleotide. AMP-QDs could stimulate the growth of T. thermophila while mercaptoacetic acid-capped CdSe/ZnS quantum dots inhibited it. In addition, the population density determination and fluorescence imaging of T. thermophila BF(5) also confirmed the results obtained from microcalorimetry. It is believed that this approach will provide a more convenient methodology for the kinetics and thermodynamics of microorganism when coexisting with QDs in real time, and all of which are very significant to understanding the effect of QDs to organism.
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Affiliation(s)
- Qi Xiao
- College of Chemistry and Life Science, Guangxi Teachers Education University, Nanning, China
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16
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St. Angelo SK, Hartz EL. Ginkgo as a Green Reducing Agent for Gold Nanoparticles and Nanoplatelets. ACTA ACUST UNITED AC 2012. [DOI: 10.1080/19430892.2012.678706] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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17
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Malic L, Sandros MG, Tabrizian M. Designed biointerface using near-infrared quantum dots for ultrasensitive surface plasmon resonance imaging biosensors. Anal Chem 2011; 83:5222-9. [PMID: 21604742 DOI: 10.1021/ac200465m] [Citation(s) in RCA: 63] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The surface plasmon resonance imaging chip biointerface is fully designed using near-infrared (NIR) quantum dots (QDs) for the enhancement of surface plasmon resonance imaging (SPRi) signals in order to extend their application for medical diagnostics. The measured SPRi detection signal following the QD binding to the surface was amplified 25-fold for a 1 nM concentration of single-stranded DNA (ssDNA) and 50-fold for a 1 μg/mL concentration of prostate-specific antigen (PSA), a cancer biomarker, thus substantiating their wide potential to study interactions of a diverse set of small biomolecules. This significant enhancement is attributed to the QD's mass-loading effect and spontaneous emission coupling with propagating surface plasmons, which allowed the SPRi limit of detection to be reduced to 100 fM and 100 pg/mL for ssDNA and PSA, respectively. Furthermore, this study illustrates the potential of SPRi to be easily integrated with fluorescent imaging for advanced correlative surface-interaction analysis.
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Affiliation(s)
- Lidija Malic
- Department of Biomedical Engineering, McGill University, 3775 University Street, Montreal, Quebec, Canada H3A 2B4
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18
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Li R, Jiang F, Xiao Q, Li J, Liu X, Yu Q, Liu Y, Zeng C. Microcalorimetric, spectroscopic and microscopic investigation on the toxic effects of CdTe quantum dots on Halobacterium halobium R1. NANOTECHNOLOGY 2010; 21:475102. [PMID: 21030766 DOI: 10.1088/0957-4484/21/47/475102] [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
The biological effect of CdTe quantum dots (QDs) on Halobacterium halobium R1 (H. halobium R1) growth was analyzed by a microcalorimetric technique. By using a TAM air eight channels microcalorimeter, the thermogenic curves of H. halobium R1 growth were obtained at 37 °C. To analyze the results, the maximum heat power (P(m)) and the growth rate constants (k) were determined, which showed that they were correlated to the concentration of QDs. The addition of quantum dots caused a gradual increase of P(m) and k at low concentrations of QDs, and a conspicuous decrease at high concentrations. For confirmation, the turbidity (OD(600)) and respiratory rate at different concentrations of QDs were studied. The morphology of H. halobium R1 cells both in the absence and presence of QDs was examined by transmission electron microscopy (TEM). The results of these studies were corroborated with ones derived from microcalorimetry. In this work, the mechanism of cytotoxicity of QDs was explored through fluorescence spectroscopy, inductively coupled plasma mass spectrometry (ICP-MS) and microcalorimetry. It was clear that metabolic mechanism of H. halobium R1 growth was changed by the addition of QDs. To the best of our knowledge, the thermokinetics and toxicology of CdTe QDs against H. halobium R1 were obtained for the first time by microcalorimetry.
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Affiliation(s)
- Ran Li
- State Key Laboratory of Virology and Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, People's Republic of China
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19
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Walczyk D, Bombelli FB, Monopoli MP, Lynch I, Dawson KA. What the cell "sees" in bionanoscience. J Am Chem Soc 2010; 132:5761-8. [PMID: 20356039 DOI: 10.1021/ja910675v] [Citation(s) in RCA: 852] [Impact Index Per Article: 60.9] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
What the biological cell, organ, or barrier actually "sees" when interacting with a nanoparticle dispersed in a biological medium likely matters more than the bare material properties of the particle itself. Typically the bare surface of the particle is covered by several biomolecules, including a select group of proteins drawn from the biological medium. Here, we apply several different methodologies, in a time-resolved manner, to follow the lifetime of such biomolecular "coronas" both in situ and isolated from the excess plasma. We find that such particle-biomolecule complexes can be physically isolated from the surrounding medium and studied in some detail, without altering their structure. For several nanomaterial types, we find that blood plasma-derived coronas are sufficiently long-lived that they, rather than the nanomaterial surface, are likely to be what the cell sees. From fundamental science to regulatory safety, current efforts to classify the biological impacts of nanomaterials (currently according to bare material type and bare surface properties) may be assisted by the methodology and understanding reported here.
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Affiliation(s)
- Dorota Walczyk
- Centre for BioNano Interactions, School of Chemistry and Chemical Biology, University College Dublin, Belfield, Dublin 4, Ireland
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