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Pivotal Role of Quantum Dots in the Advancement of Healthcare Research. COMPUTATIONAL INTELLIGENCE AND NEUROSCIENCE 2021; 2021:2096208. [PMID: 34413883 PMCID: PMC8369165 DOI: 10.1155/2021/2096208] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/24/2021] [Accepted: 07/31/2021] [Indexed: 12/01/2022]
Abstract
The quantum dot is a kind of nanoparticle whose dimension is smaller than the size of a typical nanoparticle ranging from tens of nanometers to a few hundredths of nanometers. The quantum mechanical behavior associated with the quantum dot displays different optical and electronic properties, enabling the quantum dot to find potential applications in a multitude of areas such as solar cells, light-emitting diodes, lasers, and biomedical applications. The objective of this investigation is to explore its fundamentals, synthesis, and applications, especially in the healthcare domain. We have discussed the quantum dot synthesis techniques using chemical methods, namely, wet-chemical methods and vapor-phase methods and plasma processing methods, namely, an ion sputtering method and plasma-enhanced chemical vapor deposition method. We have thoroughly investigated the application of quantum dots in imaging, diagnostics, and gene therapy areas. A significant outcome of this review is to propose quantum dots as a new modality in the treatment of cancer and gene therapeutics in the healthcare domain and the potentials of artificial intelligence to improve their performance via the applications of neural networks.
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2
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Theoretical studies on the electronic and optoelectronic properties of DNA/RNA hybrid-metal complexes. Polyhedron 2021. [DOI: 10.1016/j.poly.2020.115015] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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3
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Jin KT, Yao JY, Ying XJ, Lin Y, Chen YF. Nanomedicine and Early Cancer Diagnosis: Molecular Imaging using Fluorescence Nanoparticles. Curr Top Med Chem 2020; 20:2737-2761. [PMID: 32962614 DOI: 10.2174/1568026620666200922112640] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2020] [Revised: 10/15/2020] [Accepted: 10/30/2020] [Indexed: 12/15/2022]
Abstract
Incorporating nanotechnology into fluorescent imaging and magnetic resonance imaging (MRI) has shown promising potential for accurate diagnosis of cancer at an earlier stage than the conventional imaging modalities. Molecular imaging (MI) aims to quantitatively characterize, visualize, and measure the biological processes or living cells at molecular and genetic levels. MI modalities have been exploited in different applications including noninvasive determination and visualization of diseased tissues, cell trafficking visualization, early detection, treatment response monitoring, and in vivo visualization of living cells. High-affinity molecular probe and imaging modality to detect the probe are the two main requirements of MI. Recent advances in nanotechnology and allied modalities have facilitated the use of nanoparticles (NPs) as MI probes. Within the extensive group of NPs, fluorescent NPs play a prominent role in optical molecular imaging. The fluorescent NPs used in molecular and cellular imaging can be categorized into three main groups including quantum dots (QDs), upconversion, and dyedoped NPs. Fluorescent NPs have great potential in targeted theranostics including cancer imaging, immunoassay- based cells, proteins and bacteria detections, imaging-guided surgery, and therapy. Fluorescent NPs have shown promising potentials for drug and gene delivery, detection of the chromosomal abnormalities, labeling of DNA, and visualizing DNA replication dynamics. Multifunctional NPs have been successfully used in a single theranostic modality integrating diagnosis and therapy. The unique characteristics of multifunctional NPs make them potential theranostic agents that can be utilized concurrently for diagnosis and therapy. This review provides the state of the art of the applications of nanotechnologies in early cancer diagnosis focusing on fluorescent NPs, their synthesis methods, and perspectives in clinical theranostics.
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Affiliation(s)
- Ke-Tao Jin
- Department of Colorectal Surgery, Jinhua Hosptial, Zhejiang University School of Medicine, Jinhua, Zhejiang 321000, P.R. China
| | - Jia-Yu Yao
- Key Laboratory of Tumor Molecular Diagnosis and Individualized Medicine of Zhejiang Province, Zhejiang Provincial People's Hospital (People's Hospital of Hangzhou Medical College), Hangzhou 310014, P.R. China,Clinical Research Institute, Zhejiang Provincial People's Hospital (People's Hospital Hangzhou Medical College), Hangzhou 310014, P.R. China
| | - Xiao-Jiang Ying
- Department of Colorectal Surgery Shaoxing People's Hospital (Shaoxing Hospital, Zhejiang University School of Medicine), Shaoxing, 312000, Zhejiang Province, P.R. China
| | - Yan Lin
- Department of Gastroenterology, Zhejiang Provincial People’s Hospital (People’s Hospital of Hangzhou Medical College), Hangzhou 310014, Zhejiang Province, P.R China
| | - Yun-Fang Chen
- Department of Stomatology, Zhejiang Provincial People’s Hospital (People’s Hospital of Hangzhou Medical College), Hangzhou 310014, P.R. China
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4
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Srivastava R. Nucleobase Pair-Metal Dimer/Dinuclear Metal Cation Interaction: A Theoretical Study. ACS OMEGA 2020; 5:18808-18817. [PMID: 32775882 PMCID: PMC7408194 DOI: 10.1021/acsomega.0c01931] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/27/2020] [Accepted: 07/06/2020] [Indexed: 06/11/2023]
Abstract
Nucleobase pair-metal dimer/dinuclear metal cation interactions play an important role in biological applications because of their highly symmetrical structures and high stabilities. In this work, we have selected five adenine-adenine hydrogen bonding, adenine-thymine (AT), adenine-uracil, adenine-adenine stacking pairs, and Watson-Crick AT stacking pairs and studied their interaction with the coinage metal dimer M2 and M2 2+ metal cations, where M = Ag, Au, and Cu. Quantum chemical calculations have been carried out with density functional theory (DFT) and time-dependent DFT (TDDFT) methods. Electronic structures were analyzed by the partial density of states method. During interactions, we find that M-M distances are shorter than the sum of van der Waals radii of the corresponding two homocoinage metal atoms, which show the existence of significant metallophilic interactions. Results indicated that nucleobase-M2 2+ complexes are stronger as compared to nucleobase-M2 complexes. Also, the replacement of the hydrogen bond by the dinuclear metal cation-coordinated bond forms more stable alternative metallo-DNA sequences in AAST base pairs. TDDFT calculations reveal that nucleobase-Cu2 complexes and nucleobase-Ag2 2+/Au2 2+ complexes can be used for fluorescent markers and logic gate applications. Atom-in-molecules analysis predicted the noncovalent interaction in these complexes.
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Affiliation(s)
- Ruby Srivastava
- Bioinformatics, CSIR-Centre
for Cellular and Molecular Biology, Hyderabad 500607, India
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5
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Saha A, Reches M. Multiplex optical detection and quantification of DNA fragments by metallo-peptide assemblies. Sci Rep 2019; 9:8789. [PMID: 31217459 PMCID: PMC6584589 DOI: 10.1038/s41598-019-45124-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2019] [Accepted: 05/31/2019] [Indexed: 11/24/2022] Open
Abstract
Rapid detection of infectious agents such as bacteria and viruses are important for proper health management, agriculture and homeland security. This paper presents a multiplex DNA detection system self-assembled by a metallo-peptide complex. Within five minutes, the system can simultaneously detect multiple DNA fragments, without any need for their separation. The presence of proteins in the sample does not harm the detection capabilities of the system, which can discriminate even between one base-pair mismatch and can perform at concentrations as low as 200 pM.
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Affiliation(s)
- Abhijit Saha
- Institute of Chemistry, The Hebrew University of Jerusalem, Edmond J. Safra Campus, Givat Ram, Jerusalem, 9190401, Israel
- The center for Nanoscience and Nanotechnology, The Hebrew University of Jerusalem, Jerusalem, 9190401, Israel
| | - Meital Reches
- Institute of Chemistry, The Hebrew University of Jerusalem, Edmond J. Safra Campus, Givat Ram, Jerusalem, 9190401, Israel.
- The center for Nanoscience and Nanotechnology, The Hebrew University of Jerusalem, Jerusalem, 9190401, Israel.
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Hu Y, Niemeyer CM. From DNA Nanotechnology to Material Systems Engineering. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2019; 31:e1806294. [PMID: 30767279 DOI: 10.1002/adma.201806294] [Citation(s) in RCA: 99] [Impact Index Per Article: 19.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/28/2018] [Revised: 11/29/2018] [Indexed: 05/25/2023]
Abstract
In the past 35 years, DNA nanotechnology has grown to a highly innovative and vibrant field of research at the interface of chemistry, materials science, biotechnology, and nanotechnology. Herein, a short summary of the state of research in various subdisciplines of DNA nanotechnology, ranging from pure "structural DNA nanotechnology" over protein-DNA assemblies, nanoparticle-based DNA materials, and DNA polymers to DNA surface technology is given. The survey shows that these subdisciplines are growing ever closer together and suggests that this integration is essential in order to initiate the next phase of development. With the increasing implementation of machine-based approaches in microfluidics, robotics, and data-driven science, DNA-material systems will emerge that could be suitable for applications in sensor technology, photonics, as interfaces between technical systems and living organisms, or for biomimetic fabrication processes.
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Affiliation(s)
- Yong Hu
- Karlsruhe Institute of Technology (KIT), Institute for Biological Interfaces (IBG 1), Hermann-von-Helmholtz-Platz 1, D-76344, Eggenstein-Leopoldshafen, Germany
| | - Christof M Niemeyer
- Karlsruhe Institute of Technology (KIT), Institute for Biological Interfaces (IBG 1), Hermann-von-Helmholtz-Platz 1, D-76344, Eggenstein-Leopoldshafen, Germany
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7
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Schneider A, Niemeyer CM. DNA Surface Technology: From Gene Sensors to Integrated Systems for Life and Materials Sciences. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201811713] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Ann‐Kathrin Schneider
- Institute for Biological Interfaces (IBG 1) Karlsruhe Institute of Technology (KIT) Hermann-von-Helmholtz-Platz 76344 Eggenstein-Leopoldshafen Germany
| | - Christof M. Niemeyer
- Institute for Biological Interfaces (IBG 1) Karlsruhe Institute of Technology (KIT) Hermann-von-Helmholtz-Platz 76344 Eggenstein-Leopoldshafen Germany
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8
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Schneider A, Niemeyer CM. DNA Surface Technology: From Gene Sensors to Integrated Systems for Life and Materials Sciences. Angew Chem Int Ed Engl 2018; 57:16959-16967. [DOI: 10.1002/anie.201811713] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2018] [Revised: 11/15/2018] [Indexed: 01/21/2023]
Affiliation(s)
- Ann‐Kathrin Schneider
- Institute for Biological Interfaces (IBG 1) Karlsruhe Institute of Technology (KIT) Hermann-von-Helmholtz-Platz 76344 Eggenstein-Leopoldshafen Germany
| | - Christof M. Niemeyer
- Institute for Biological Interfaces (IBG 1) Karlsruhe Institute of Technology (KIT) Hermann-von-Helmholtz-Platz 76344 Eggenstein-Leopoldshafen Germany
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Chen TH, Tseng WL. Self-Assembly of Monodisperse Carbon Dots into High-Brightness Nanoaggregates for Cellular Uptake Imaging and Iron(III) Sensing. Anal Chem 2017; 89:11348-11356. [DOI: 10.1021/acs.analchem.7b02193] [Citation(s) in RCA: 52] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Tzu-Heng Chen
- Department
of Chemistry, National Sun Yat-sen University, Kaohsiung, 804, Taiwan
- Department
of Chemistry, National Taiwan University, Taipei City, 10617, Taiwan
| | - Wei-Lung Tseng
- Department
of Chemistry, National Sun Yat-sen University, Kaohsiung, 804, Taiwan
- School
of Pharmacy, College of Pharmacy, Kaohsiung Medical University, Kaohsiung City, 807, Taiwan
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Torchynska T, Polupan G, Vega Macotela L. Emission transformation in CdSe/ZnS quantum dots conjugated to biomolecules. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2017; 170:309-313. [DOI: 10.1016/j.jphotobiol.2017.04.012] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/06/2017] [Accepted: 04/12/2017] [Indexed: 01/23/2023]
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Detection of Hepatitis B Virus M204I Mutation by Quantum Dot-Labeled DNA Probe. SENSORS 2017; 17:s17050961. [PMID: 28445403 PMCID: PMC5461085 DOI: 10.3390/s17050961] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/27/2017] [Revised: 04/20/2017] [Accepted: 04/21/2017] [Indexed: 02/06/2023]
Abstract
Quantum dots (QDs) are semiconductor nanoparticles with a diameter of less than 10 nm, which have been widely used as fluorescent probes in biochemical analysis and vivo imaging because of their excellent optical properties. Sensitive and convenient detection of hepatitis B virus (HBV) gene mutations is important in clinical diagnosis. Therefore, we developed a sensitive, low-cost and convenient QDs-mediated fluorescent method for the detection of HBV gene mutations in real serum samples from chronic hepatitis B (CHB) patients who had received lamivudine or telbivudine antiviral therapy. We also evaluated the efficiency of this method for the detection of drug-resistant mutations compared with direct sequencing. In CHB, HBV DNA from the serum samples of patients with poor response or virological breakthrough can be hybridized to probes containing the M204I mutation to visualize fluorescence under fluorescence microscopy, where fluorescence intensity is related to the virus load, in our method. At present, the limits of the method used to detect HBV genetic variations by fluorescence quantum dots is 103 IU/mL. These results show that QDs can be used as fluorescent probes to detect viral HBV DNA polymerase gene variation, and is a simple readout system without complex and expensive instruments, which provides an attractive platform for the detection of HBV M204I mutation.
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12
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Cadmium-containing quantum dots: properties, applications, and toxicity. Appl Microbiol Biotechnol 2017; 101:2713-2733. [PMID: 28251268 DOI: 10.1007/s00253-017-8140-9] [Citation(s) in RCA: 82] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2016] [Revised: 01/18/2017] [Accepted: 01/20/2017] [Indexed: 01/20/2023]
Abstract
The marriage of biology with nanomaterials has significantly accelerated advancement of biological techniques, profoundly facilitating practical applications in biomedical fields. With unique optical properties (e.g., tunable broad excitation, narrow emission spectra, robust photostability, and high quantum yield), fluorescent quantum dots (QDs) have been reasonably functionalized with controllable interfaces and extensively used as a new class of optical probe in biological researches. In this review, we summarize the recent progress in synthesis and properties of QDs. Moreover, we provide an overview of the outstanding potential of QDs for biomedical research and innovative methods of drug delivery. Specifically, the applications of QDs as novel fluorescent nanomaterials for biomedical sensing and imaging have been detailedly highlighted and discussed. In addition, recent concerns on potential toxicity of QDs are also introduced, ranging from cell researches to animal models.
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13
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Kairdolf BA, Qian X, Nie S. Bioconjugated Nanoparticles for Biosensing, in Vivo Imaging, and Medical Diagnostics. Anal Chem 2017; 89:1015-1031. [DOI: 10.1021/acs.analchem.6b04873] [Citation(s) in RCA: 106] [Impact Index Per Article: 15.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Brad A. Kairdolf
- Department of Biomedical
Engineering, Emory University and Georgia Institute of Technology, 1760 Haygood Drive, Atlanta, Georgia 30322, United States
| | - Ximei Qian
- Department of Biomedical
Engineering, Emory University and Georgia Institute of Technology, 1760 Haygood Drive, Atlanta, Georgia 30322, United States
| | - Shuming Nie
- Department of Biomedical
Engineering, Emory University and Georgia Institute of Technology, 1760 Haygood Drive, Atlanta, Georgia 30322, United States
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14
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Shu D, Pi F, Wang C, Zhang P, Guo P. New approach to develop ultra-high inhibitory drug using the power function of the stoichiometry of the targeted nanomachine or biocomplex. Nanomedicine (Lond) 2016; 10:1881-97. [PMID: 26139124 DOI: 10.2217/nnm.15.37] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
AIMS To find methods for potent drug development by targeting to biocomplex with high copy number. METHODS Phi29 DNA packaging motor components with different stoichiometries were used as model to assay virion assembly with Yang Hui's Triangle [Formula: see text], where Z = stoichiometry, M = drugged subunits per biocomplex, p and q are the fraction of drugged and undrugged subunits in the population. RESULTS Inhibition efficiency follows a power function. When number of drugged subunits to block the function of the complex K = 1, the uninhibited biocomplex equals q(z), demonstrating the multiplicative effect of stoichiometry on inhibition with stoichiometry 1000 > 6 > 1. Complete inhibition of virus replication was found when Z = 6. CONCLUSION Drug inhibition potency depends on the stoichiometry of the targeted components of the biocomplex or nanomachine. The inhibition effect follows a power function of the stoichiometry of the target biocomplex.
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Affiliation(s)
- Dan Shu
- Department of Pharmaceutical Sciences, Markey Cancer Center, University of Kentucky, Lexington, KY 40536, USA
| | - Fengmei Pi
- Department of Pharmaceutical Sciences, Markey Cancer Center, University of Kentucky, Lexington, KY 40536, USA
| | - Chi Wang
- Department of Biostatistics & Nanobiotechnology Center, University of Kentucky, Lexington, KY 40536, USA
| | - Peng Zhang
- Department of Surgery, University of Michigan Health System, Ann Arbor, MI 48109, USA
| | - Peixuan Guo
- Department of Pharmaceutical Sciences, Markey Cancer Center, University of Kentucky, Lexington, KY 40536, USA
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Khan M, Khan AR, Shin JH, Park SY. A liquid-crystal-based DNA biosensor for pathogen detection. Sci Rep 2016; 6:22676. [PMID: 26940532 PMCID: PMC4778015 DOI: 10.1038/srep22676] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2015] [Accepted: 02/17/2016] [Indexed: 01/23/2023] Open
Abstract
A liquid-crystal (LC)-filled transmission electron microscopy (TEM) grid cell coated with the cationic surfactant dodecyltrimethylammonium bromide (DTAB), to which a single-stranded deoxyribonucleic acid probe (ssDNAprobe) was adsorbed at the LC/aqueous interface (TEMDTAB/DNA), was applied for the highly specific detection of target DNA molecules. The DTAB-coated E7 (used LC mixture) in the TEM grid (TEMDTAB) exhibited a homeotropic orientation, and changed to a planar orientation upon adsorption of the ssDNAprobe. The TEMDTAB/DNA was then exposed to complementary (target) ssDNA, which resulted in a planar-to-homeotropic configurational change of E7 that could be observed through a polarized optical microscope under crossed polarizers. The optimum adsorption density (2 μM) of ssDNAprobe enabled the detection of ≥0.05 nM complementary ssDNA. This TEMDTAB/DNA biosensor could differentiate complementary ssDNA from mismatched ssDNA as well as double-stranded DNA. It also successfully detected the genomic DNAs of the bacterium Erwinia carotovora and the fungi Rhazictonia solani. Owe to the high specificity, sensitivity, and label-free detection, this biosensor may broaden the applications of LC-based biosensors to pathogen detection.
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Affiliation(s)
- Mashooq Khan
- Department of Polymer Science & Engineering, Polymeric Nanomaterials Laboratory, School of Applied Chemical Engineering, Kyungpook National University, #1370 Sangyuk-dong, Buk-gu, Daegu 41566, Korea
| | - Abdur Rahim Khan
- School of Applied Biosciences, Kyungpook National University, #1370 Sangyuk-dong, Buk-gu, Daegu 41566, Korea
| | - Jae-Ho Shin
- School of Applied Biosciences, Kyungpook National University, #1370 Sangyuk-dong, Buk-gu, Daegu 41566, Korea
| | - Soo-Young Park
- Department of Polymer Science & Engineering, Polymeric Nanomaterials Laboratory, School of Applied Chemical Engineering, Kyungpook National University, #1370 Sangyuk-dong, Buk-gu, Daegu 41566, Korea
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Mazloum-Ardakani M, Aghaei R, Heidari MM. Quantum-dot biosensor for hybridization and detection of R3500Q mutation of apolipoprotein B-100 gene. Biosens Bioelectron 2015; 72:362-9. [DOI: 10.1016/j.bios.2015.05.014] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2015] [Revised: 05/05/2015] [Accepted: 05/06/2015] [Indexed: 10/23/2022]
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17
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A jack-of-all-trades: 2-mercaptosuccinic acid. Appl Microbiol Biotechnol 2015; 99:4545-57. [DOI: 10.1007/s00253-015-6605-2] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2015] [Accepted: 04/11/2015] [Indexed: 12/16/2022]
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18
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Wang Q, Qiu JB, Song ZG, Yang ZW, Yin ZY, Zhou DC. Optical properties of Ce(3+)-Nd(3+) co-doped YAG nanoparticles for visual and near-infrared biological imaging. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2015; 149:898-903. [PMID: 26004099 DOI: 10.1016/j.saa.2015.04.082] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/02/2015] [Revised: 04/05/2015] [Accepted: 04/21/2015] [Indexed: 06/04/2023]
Abstract
Ce(3+)-Nd(3+) co-doped Y3Al5O12 (YAG) nanoparticles, an average size of 20-30 nm clusters aggregated by 8-10 nm YAG nanoparticles, were synthesized by a solvothermal method. When excited by blue irradiation source, strong and broad yellow luminescence (centered at 526 nm) from Ce(3+) as well as near-infrared (NIR) luminescence (890, 1066 and 1335 nm) of Nd(3+) was observed simultaneously. It occurred by the effective dipole-dipole energy transfer from Ce(3+) to Nd(3+). Energy transfer efficiency from Ce(3+) to Nd(3+) was also calculated to be 50%. The optical property suggests that Ce(3+)-Nd(3+) co-doped YAG nanoparticles can be used as an efficient fluorescence imaging agent for not only visual but also near-infrared imaging.
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Affiliation(s)
- Q Wang
- College of Materials Science and Engineering, Kunming University of Science and Technology, Kunming 650093, Yunnan, People's Republic of China; Research Center for Analysis and Measurement, Kunming University of Science and Technology, Kunming 650093, Yunnan, People's Republic of China
| | - J B Qiu
- College of Materials Science and Engineering, Kunming University of Science and Technology, Kunming 650093, Yunnan, People's Republic of China.
| | - Z G Song
- College of Materials Science and Engineering, Kunming University of Science and Technology, Kunming 650093, Yunnan, People's Republic of China
| | - Z W Yang
- College of Materials Science and Engineering, Kunming University of Science and Technology, Kunming 650093, Yunnan, People's Republic of China
| | - Z Y Yin
- College of Materials Science and Engineering, Kunming University of Science and Technology, Kunming 650093, Yunnan, People's Republic of China
| | - D C Zhou
- College of Materials Science and Engineering, Kunming University of Science and Technology, Kunming 650093, Yunnan, People's Republic of China
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20
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Lee J, Han CS. Bright, stable, and water-soluble CuInS2/ZnS nanocrystals passivated by cetyltrimethylammonium bromide. NANOSCALE RESEARCH LETTERS 2015; 10:145. [PMID: 25852434 PMCID: PMC4385304 DOI: 10.1186/s11671-015-0836-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/30/2014] [Accepted: 02/19/2015] [Indexed: 05/28/2023]
Abstract
We report a highly bright and stable aqueous dispersion of CuInS2/ZnS (CIS/ZnS) nanocrystals (NCs) using surfactant-assisted microemulsion and cold treatment. CIS/ZnS NCs were facilely synthesized via a stepwise, consecutive hybrid flow reactor approach. To stabilize the optical properties of hydrophobic CIS/ZnS NCs, cetyltrimethylammonium bromide (CTAB) was chosen as a matrix for aqueous phase transfer. As the result, a high quantum yield (QY) of 56.0% and excellent photostability were acquired in aqueous media. For removing excessive surfactants, cold treatment (4°C) of the CTAB-water solution was adopted to prevent further agglomeration of CIS/ZnS NCs, which could secure high stability over 6 months (less 2% reduction in QY). The optical features and structure of the obtained CTAB stabilized CIS/ZnS (CTAB-CIS/ZnS) NCs have been characterized by UV-vis and photoluminescence (PL) spectroscopies, XRD, XPS, EDX, and TEM. The high stability and PL of water soluble CTAB-CIS/ZnS NCs suggest their potential in nanoelectronics and bioapplications.
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Affiliation(s)
- Jun Lee
- School of Mechanical Engineering, Korea University, 145 Anam-ro, Seoul, Korea
| | - Chang-Soo Han
- School of Mechanical Engineering, Korea University, 145 Anam-ro, Seoul, Korea
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Abbasi E, Kafshdooz T, Bakhtiary M, Nikzamir N, Nikzamir N, Nikzamir M, Mohammadian M, Akbarzadeh A. Biomedical and biological applications of quantum dots. ARTIFICIAL CELLS NANOMEDICINE AND BIOTECHNOLOGY 2015; 44:885-91. [DOI: 10.3109/21691401.2014.998826] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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22
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Miele E, Accardo A, Falqui A, Marini M, Giugni A, Leoncini M, De Angelis F, Krahne R, Di Fabrizio E. Writing and functionalisation of suspended DNA nanowires on superhydrophobic pillar arrays. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2015; 11:134-140. [PMID: 25131422 DOI: 10.1002/smll.201401649] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/07/2014] [Revised: 07/10/2014] [Indexed: 06/03/2023]
Abstract
Nanowire arrays and networks with precisely controlled patterns are very interesting for innovative device concepts in mesoscopic physics. In particular, DNA templates have proven to be versatile for the fabrication of complex structures that obtained functionality via combinations with other materials, for example by functionalisation with molecules or nanoparticles, or by coating with metals. Here, the controlled motion of the a three-phase contact line (TCL) of DNA-loaded drops on superhydrophobic substrates is used to fabricate suspended nanowire arrays. In particular, the deposition of DNA wires is imaged in situ, and different patterns are obtained on hexagonal pillar arrays by controlling the TCL velocity and direction. Robust conductive wires and networks are achieved by coating the wires with a thin layer of gold, and as proof of concept conductivity measurements are performed on single suspended wires. The plastic material of the superhydrophobic pillars ensures electrical isolation from the substrate. The more general versatility of these suspended nanowire networks as functional templates is outlined by fabricating hybrid organic-metal-semiconductor nanowires by growing ZnO nanocrystals onto the metal-coated nanowires.
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Affiliation(s)
- Ermanno Miele
- Istituto Italiano di Tecnologia (IIT), Via Morego 30, 16163, Genova, Italy
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23
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Ge Y, Chen S, Yang J, Wang B, Wang H. Color-tunable luminescent CdTe quantum dot membranes based on bacterial cellulose (BC) and application in ion detection. RSC Adv 2015. [DOI: 10.1039/c5ra08361c] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Color-tunable luminescent membranes of CdTe QDs on bacterial cellulose (BC) nanofibers were successfully fabricated by in situ synthesis in aqueous solution.
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Affiliation(s)
- Yan Ge
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials
- Key Laboratory of High Performance Fibers and Products (Ministry of Education)
- College of Materials Science and Engineering
- Donghua University
- Shanghai
| | - Shiyan Chen
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials
- Key Laboratory of High Performance Fibers and Products (Ministry of Education)
- College of Materials Science and Engineering
- Donghua University
- Shanghai
| | - Jingxuan Yang
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials
- Key Laboratory of High Performance Fibers and Products (Ministry of Education)
- College of Materials Science and Engineering
- Donghua University
- Shanghai
| | - Biao Wang
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials
- Key Laboratory of High Performance Fibers and Products (Ministry of Education)
- College of Materials Science and Engineering
- Donghua University
- Shanghai
| | - Huaping Wang
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials
- Key Laboratory of High Performance Fibers and Products (Ministry of Education)
- College of Materials Science and Engineering
- Donghua University
- Shanghai
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24
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Zhang J, Chen L, Tse WH, Bi R, Chen L. Inorganic Nanoparticles: Engineering for Biomedical Applications. IEEE NANOTECHNOLOGY MAGAZINE 2014. [DOI: 10.1109/mnano.2014.2355277] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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25
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Aqueous Synthesis of Nontoxic Ag2Se/ZnSe Quantum Dots Designing as Fluorescence Sensors for Detection of Ag(I) and Cu(II) Ions. J Fluoresc 2014; 25:41-8. [DOI: 10.1007/s10895-014-1476-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2014] [Accepted: 10/23/2014] [Indexed: 10/24/2022]
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26
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Jasinski DL, Khisamutdinov EF, Lyubchenko YL, Guo P. Physicochemically tunable polyfunctionalized RNA square architecture with fluorogenic and ribozymatic properties. ACS NANO 2014; 8:7620-9. [PMID: 24971772 PMCID: PMC4148160 DOI: 10.1021/nn502160s] [Citation(s) in RCA: 63] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/18/2014] [Accepted: 06/27/2014] [Indexed: 05/22/2023]
Abstract
Recent advances in RNA nanotechnology allow the rational design of various nanoarchitectures. Previous methods utilized conserved angles from natural RNA motifs to form geometries with specific sizes. However, the feasibility of producing RNA architecture with variable sizes using native motifs featuring fixed sizes and angles is limited. It would be advantageous to display RNA nanoparticles of diverse shape and size derived from a given primary sequence. Here, we report an approach to construct RNA nanoparticles with tunable size and stability. Multifunctional RNA squares with a 90° angle were constructed by tuning the 60° angle of the three-way junction (3WJ) motif from the packaging RNA (pRNA) of the bacteriophage phi29 DNA packaging motor. The physicochemical properties and size of the RNA square were also easily tuned by modulating the “core” strand and adjusting the length of the sides of the square via predictable design. Squares of 5, 10, and 20 nm were constructed, each showing diverse thermodynamic and chemical stabilities. Four “arms” extending from the corners of the square were used to incorporate siRNA, ribozyme, and fluorogenic RNA motifs. Unique intramolecular contact using the pre-existing intricacy of the 3WJ avoids relatively weaker intermolecular interactions via kissing loops or sticky ends. Utilizing the 3WJ motif, we have employed a modular design technique to construct variable-size RNA squares with controllable properties and functionalities for diverse and versatile applications with engineering, pharmaceutical, and medical potential. This technique for simple design to finely tune physicochemical properties adds a new angle to RNA nanotechnology.
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Affiliation(s)
- Daniel L. Jasinski
- Nanobiotechnology Center, Markey Cancer Center, and Department of Pharmaceutical Sciences, College of Pharmacy, University of Kentucky, Lexington, Kentucky 40536, United States
| | - Emil F. Khisamutdinov
- Nanobiotechnology Center, Markey Cancer Center, and Department of Pharmaceutical Sciences, College of Pharmacy, University of Kentucky, Lexington, Kentucky 40536, United States
| | - Yuri L. Lyubchenko
- Department of Pharmaceutical Sciences, University of Nebraska Medical Center, Omaha, Nebraska 68198, United States
| | - Peixuan Guo
- Nanobiotechnology Center, Markey Cancer Center, and Department of Pharmaceutical Sciences, College of Pharmacy, University of Kentucky, Lexington, Kentucky 40536, United States
- Address correspondence to
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27
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Fang H, Zhang P, Huang LP, Zhao Z, Pi F, Montemagno C, Guo P. Binomial distribution for quantification of protein subunits in biological nanoassemblies and functional nanomachines. NANOMEDICINE-NANOTECHNOLOGY BIOLOGY AND MEDICINE 2014; 10:1433-40. [PMID: 24650885 DOI: 10.1016/j.nano.2014.03.005] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/09/2013] [Revised: 02/21/2014] [Accepted: 03/05/2014] [Indexed: 11/30/2022]
Abstract
Living systems produce ordered structures and nanomachines that inspire the development of biomimetic nanodevices such as chips, MEMS, actuators, sensors, sorters, and apparatuses for single-pore DNA sequencing, disease diagnosis, drug or therapeutic RNA delivery. Determination of the copy numbers of subunits that build these machines is challenging due to small size. Here we report a simple mathematical method to determine the stoichiometry, using phi29 DNA-packaging nanomotor as a model to elucidate the application of a formula ∑M=0(Z)((Z)M)p(Z-M)q(M), where p and q are the percentage of wild-type and inactive mutant in the empirical assay; M is the copy numbers of mutant and Z is the stoichiometry in question. Variable ratios of mutants and wild-type were mixed to inhibit motor function. Empirical data were plotted over the theoretical curves to determine the stoichiometry and the value of K, which is the number of mutant needed in each machine to block the function, all based on the condition that wild-type and mutant are equal in binding affinity. Both Z and K from 1-12 were investigated. The data precisely confirmed that phi29 motor contains six copies (Z) of the motor ATPase gp16, and K=1. From the clinical editor: To determine copy numbers of subunits that form nanomachines in living organisms is a daunting task due to the complexities and the inherently small sizes associated with such systems. In this paper, a simple mathematical method is described how to determine the stoichiometry of copies in biomimetic nanodevices, using phi29 DNA-packaging nanomotor as a model.
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Affiliation(s)
- Huaming Fang
- Nanobiotechnology Center, Department of Pharmaceutical Sciences, and Markey Cancer Center, University of Kentucky, Lexington, KY, USA
| | - Peng Zhang
- Department of Surgery, University of Michigan, Ann Arbor, MI, USA
| | - Lisa P Huang
- Oncoveda, Tumor Biology Center, Medical Diagnostic Laboratories, L.L.C., Hamilton, NJ, USA
| | - Zhengyi Zhao
- Nanobiotechnology Center, Department of Pharmaceutical Sciences, and Markey Cancer Center, University of Kentucky, Lexington, KY, USA
| | - Fengmei Pi
- Nanobiotechnology Center, Department of Pharmaceutical Sciences, and Markey Cancer Center, University of Kentucky, Lexington, KY, USA
| | - Carlo Montemagno
- National Institute for Nanobiotechnology, Department of Chemical and Materials Engineering, University of Alberta, Edmonton, Canada
| | - Peixuan Guo
- Nanobiotechnology Center, Department of Pharmaceutical Sciences, and Markey Cancer Center, University of Kentucky, Lexington, KY, USA.
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Meyer R, Giselbrecht S, Rapp BE, Hirtz M, Niemeyer CM. Advances in DNA-directed immobilization. Curr Opin Chem Biol 2014; 18:8-15. [DOI: 10.1016/j.cbpa.2013.10.023] [Citation(s) in RCA: 81] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2013] [Accepted: 10/01/2013] [Indexed: 12/18/2022]
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29
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Specific intracellular uptake of herceptin-conjugated CdSe/ZnS quantum dots into breast cancer cells. BIOMED RESEARCH INTERNATIONAL 2014; 2014:954307. [PMID: 24511553 PMCID: PMC3910467 DOI: 10.1155/2014/954307] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/14/2013] [Accepted: 12/14/2013] [Indexed: 11/17/2022]
Abstract
Herceptin, a typical monoclonal antibody, was immobilized on the surface of CdSe/ZnS core-shell quantum dots (QDs) to enhance their specific interactions with breast cancer cells (SK-BR3). The mean size of the core-shell quantum dots (28 nm), as determined by dynamic light scattering, increased to 86 nm after herceptin immobilization. The in vitro cell culture experiment showed that the keratin forming cancer cells (KB) proliferated well in the presence of herceptin-conjugated QDs (QD-Her, 5 nmol/mL), whereas most of the breast cancer cells (SK-BR3) had died. To clarify the mechanism of cell death, the interaction of SK-BR3 cells with QD-Her was examined by confocal laser scanning microscopy. As a result, the QD-Her bound specifically to the membrane of SK-BR3, which became almost saturated after 6 hours incubation. This suggests that the growth signal of breast cancer cells is inhibited completely by the specific binding of herceptin to the Her-2 receptor of SK-BR3 membrane, resulting in cell death.
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Jeyadevi R, Sivasudha T, Rameshkumar A, Ananth DA, Aseervatham GSB, Kumaresan K, Kumar LD, Jagadeeswari S, Renganathan R. Enhancement of anti arthritic effect of quercetin using thioglycolic acid-capped cadmium telluride quantum dots as nanocarrier in adjuvant induced arthritic Wistar rats. Colloids Surf B Biointerfaces 2013; 112:255-63. [DOI: 10.1016/j.colsurfb.2013.07.065] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2013] [Revised: 07/27/2013] [Accepted: 07/30/2013] [Indexed: 01/08/2023]
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31
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Abdallah BG, Chao TC, Kupitz C, Fromme P, Ros A. Dielectrophoretic sorting of membrane protein nanocrystals. ACS NANO 2013; 7:9129-37. [PMID: 24004002 PMCID: PMC3894612 DOI: 10.1021/nn403760q] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Structure elucidation of large membrane protein complexes is still a considerable challenge, yet is a key factor in drug development and disease combat. Femtosecond nanocrystallography is an emerging technique with which structural information of membrane proteins is obtained without the need to grow large crystals, thus overcoming the experimental riddle faced in traditional crystallography methods. Here, we demonstrate for the first time a microfluidic device capable of sorting membrane protein crystals based on size using dielectrophoresis. We demonstrate the excellent sorting power of this new approach with numerical simulations of selected submicrometer beads in excellent agreement with experimental observations. Crystals from batch crystallization broths of the huge membrane protein complex photosystem I were sorted without further treatment, resulting in a high degree of monodispersity and crystallinity in the ~100 nm size range. Microfluidic integration, continuous sorting, and nanometer-sized crystal fractions make this method ideal for direct coupling to femtosecond nanocrystallography.
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Affiliation(s)
| | - Tzu-Chiao Chao
- Department of Biology, University of Regina, Regina, SK, S4S0A2, Canada
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32
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Surface passivation of CdSe-TOPO quantum dots by poly(acrylic acid): solvent sensitivity and photo-induced emission in water. IRANIAN POLYMER JOURNAL 2013. [DOI: 10.1007/s13726-013-0187-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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33
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Guan Q. Influence of quantum dots on the aromaticity of thiosalicylic acid. J Mol Model 2013; 19:5129-33. [PMID: 23934301 DOI: 10.1007/s00894-013-1949-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2013] [Accepted: 07/16/2013] [Indexed: 11/29/2022]
Abstract
When ligands are coordinated to quantum dots (QDs), the ring current of the ligand strongly influences the applications of the QDs, for example in solar cell technology. The Raman spectrum of the ligand can be used to probe and identify ions or measure ion concentrations. Here, we investigated, using a theoretical method, the aromaticities and Raman spectra of CdTe, CdSe, and CdS QDs coordinated with thiosalicylic acid ligands. We found that the aromaticity of the benzene ring in free thiosalicylic acid increased when it was used as a QD ligand. The ring currents of the benzene rings in the CdTe-ligand, CdSe-ligand, and CdS-ligand systems were stronger than the ring current of the benzene ring in free thiosalicylic acid; in other words, the QDs influence the ring current--they enhance the electron transfer rate of the benzene ring. We also discovered that the CdTe-ligand and CdSe-ligand systems have stronger ring currents than the CdS-ligand system. The high electronegativity and vacant d orbital of the sulfur atom influence the ring current of the ligand in the CdS-ligand system. Further, the Raman spectrum of free thiosalicylic acid was different from the spectra of the ligands in the QD-ligand systems: the Raman spectra of COO(-) in each QD-ligand system was enhanced compared with that of the COO(-) in free thiosalicylic acid.
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Affiliation(s)
- Qiumei Guan
- Electrical and Electronic Experiment Center, Southeast University, Nanjing, 210096, China,
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34
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Wang Y, Hu R, Lin G, Roy I, Yong KT. Functionalized quantum dots for biosensing and bioimaging and concerns on toxicity. ACS APPLIED MATERIALS & INTERFACES 2013; 5:2786-2799. [PMID: 23394295 DOI: 10.1021/am302030a] [Citation(s) in RCA: 182] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Considerable efforts have been devoted to the development of novel functionalized nanomaterials for bio-oriented applications. With unique optical properties and molar scale production, colloidal photoluminescent quantum dots (QDs) have been properly functionalized with controlled interfaces as new class of optical probes with extensive use in biomedical research. In this review, we present a brief summary on the current research interests of using fine engineered QDs as a nanoplatform for biomedical sensing and imaging applications. In addition, recent concerns on the potential toxic effects of QDs are described as a general guidance for the development on QD formulations in future studies.
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Affiliation(s)
- Yucheng Wang
- School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore 639798, Singapore
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35
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Espinola JC, Torchynska TV, Gómez JAJ, Douda J, Gazarian K. Double core Infrared (CdSeTe) / ZnS quantum dots conjugated to Papiloma virus antibodies. ACTA ACUST UNITED AC 2013. [DOI: 10.1557/opl.2013.309] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Papers in the Appendix were published in electronic format as Volume 1534
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36
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Kairdolf BA, Smith AM, Stokes TH, Wang MD, Young AN, Nie S. Semiconductor quantum dots for bioimaging and biodiagnostic applications. ANNUAL REVIEW OF ANALYTICAL CHEMISTRY (PALO ALTO, CALIF.) 2013; 6:143-62. [PMID: 23527547 PMCID: PMC3733675 DOI: 10.1146/annurev-anchem-060908-155136] [Citation(s) in RCA: 357] [Impact Index Per Article: 32.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
Semiconductor quantum dots (QDs) are light-emitting particles on the nanometer scale that have emerged as a new class of fluorescent labels for chemical analysis, molecular imaging, and biomedical diagnostics. Compared with traditional fluorescent probes, QDs have unique optical and electronic properties such as size-tunable light emission, narrow and symmetric emission spectra, and broad absorption spectra that enable the simultaneous excitation of multiple fluorescence colors. QDs are also considerably brighter and more resistant to photobleaching than are organic dyes and fluorescent proteins. These properties are well suited for dynamic imaging at the single-molecule level and for multiplexed biomedical diagnostics at ultrahigh sensitivity. Here, we discuss the fundamental properties of QDs; the development of next-generation QDs; and their applications in bioanalytical chemistry, dynamic cellular imaging, and medical diagnostics. For in vivo and clinical imaging, the potential toxicity of QDs remains a major concern. However, the toxic nature of cadmium-containing QDs is no longer a factor for in vitro diagnostics, so the use of multicolor QDs for molecular diagnostics and pathology is probably the most important and clinically relevant application for semiconductor QDs in the immediate future.
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Affiliation(s)
- Brad A Kairdolf
- Department of Biomedical Engineering, Emory University and Georgia Institute of Technology, Atlanta, Georgia 30322, USA.
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37
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Wang Y, Hu R, Lin G, Law WC, Yong KT. Optimizing the aqueous phase synthesis of CdTe quantum dots using mixed-ligands system and their applications for imaging of live cancer cells and tumors in vivo. RSC Adv 2013. [DOI: 10.1039/c3ra41056k] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
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38
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Albrasi E, Thomas PJ, O’Brien P. Amine mediated growth and assembly of CdS nanocrystals at water–petroleum ether interface. Chem Phys Lett 2012. [DOI: 10.1016/j.cplett.2012.03.086] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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39
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Intartaglia R, Barchanski A, Bagga K, Genovese A, Das G, Wagener P, Di Fabrizio E, Diaspro A, Brandi F, Barcikowski S. Bioconjugated silicon quantum dots from one-step green synthesis. NANOSCALE 2012; 4:1271-1274. [PMID: 22252263 DOI: 10.1039/c2nr11763k] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Biofunctionalized silicon quantum dots were prepared through a one step strategy avoiding the use of chemical precursors. UV-Vis spectroscopy, Raman spectroscopy and HAADF-STEM prove oligonucleotide conjugation to the surface of silicon nanoparticle with an average size of 4 nm. The nanoparticle size results from the size-quenching effect during in situ conjugation. Photoemissive properties, conjugation efficiency and stability of these pure colloids were studied and demonstrate the bio-application potential, e.g. for nucleic acid vector delivery with semiconducting, biocompatible nanoparticles.
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Affiliation(s)
- Romuald Intartaglia
- Department of Nanophysics, Istituto Italiano di Tecnologia, via Morego, 30, 16163 Genova, Italy.
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40
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Wu S, Dou J, Zhang J, Zhang S. A simple and economical one-pot method to synthesize high-quality water soluble CdTe QDs. ACTA ACUST UNITED AC 2012. [DOI: 10.1039/c2jm31409f] [Citation(s) in RCA: 100] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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41
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Wu F, Shao Y, Ma K, Cui Q, Liu G, Xu S. Simultaneous fluorescence light-up and selective multicolor nucleobase recognition based on sequence-dependent strong binding of berberine to DNA abasic site. Org Biomol Chem 2012; 10:3300-7. [DOI: 10.1039/c2ob00028h] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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42
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Cho J, Jung YK, Lee JK. Kinetic studies on the formation of various II–VI semiconductor nanocrystals and synthesis of gradient alloy quantum dots emitting in the entire visible range. ACTA ACUST UNITED AC 2012. [DOI: 10.1039/c2jm16448e] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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43
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Dhyani H, Azahar Ali M, Pandey MK, Malhotra BD, Sen P. Electrophoretically deposited CdS quantum dots based electrode for biosensor application. ACTA ACUST UNITED AC 2012. [DOI: 10.1039/c2jm15914g] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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44
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Zhang F, Lees E, Amin F, Rivera Gil P, Yang F, Mulvaney P, Parak WJ. Polymer-coated nanoparticles: a universal tool for biolabelling experiments. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2011; 7:3113-27. [PMID: 21928301 DOI: 10.1002/smll.201100608] [Citation(s) in RCA: 186] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/30/2011] [Indexed: 05/20/2023]
Abstract
Water solubilization of nanoparticles is a fundamental prerequisite for many biological applications. To date, no single method has emerged as ideal, and several different approaches have been successfully utilized. These 'phase-transfer' strategies are reviewed, indicating key advantages and disadvantages, and a discussion of conjugation strategies is presented. Coating of hydrophobic nanoparticles with amphiphilic polymers provides a generic pathway for the phase transfer of semiconductor, magnetic, metallic, and upconverting nanoparticles from nonpolar to polar environments. Amphiphilic polymers that include maleimide groups can be readily functionalized with chemical groups for specific applications. In the second, experimental part, some of the new chemical features of such polymer-capped nanoparticles are demonstrated. In particular, nanoparticles to which a pH sensitive fluorophore has been attached are described, and their use for intracellular pH-sensing demonstrated. It is shown that the properties of analyte-sensitive fluorophores can be tuned by using interactions with the underlying nanoparticles.
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Affiliation(s)
- Feng Zhang
- Fachbereich Physik and Wissenschaftliches Zentrum für, Materialwissenschaften, Philipps Universität Marburg, Marburg, Germany
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45
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Bardajee GR, Hooshyar Z, Rostami I. Hydrophilic alginate based multidentate biopolymers for surface modification of CdS quantum dots. Colloids Surf B Biointerfaces 2011; 88:202-7. [DOI: 10.1016/j.colsurfb.2011.06.032] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2011] [Revised: 05/16/2011] [Accepted: 06/23/2011] [Indexed: 11/28/2022]
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46
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47
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Selim KMK, Xing ZC, Choi MJ, Chang Y, Guo H, Kang IK. Reduced cytotoxicity of insulin-immobilized CdS quantum dots using PEG as a spacer. NANOSCALE RESEARCH LETTERS 2011; 6:528. [PMID: 21943314 PMCID: PMC3228607 DOI: 10.1186/1556-276x-6-528] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/18/2011] [Accepted: 09/23/2011] [Indexed: 05/28/2023]
Abstract
Cytotoxicity is a severe problem for cadmium sulfide nanoparticles (CSNPs) in biological systems. In this study, mercaptoacetic acid-coated CSNPs, typical semiconductor Q-dots, were synthesized in aqueous medium by the arrested precipitation method. Then, amino-terminated polyethylene glycol (PEG) was conjugated to the surface of CSNPs (PCSNPs) in order to introduce amino groups to the surface. Finally, insulin was immobilized on the surface of PCSNPs (ICSNPs) to reduce cytotoxicity as well as to enhance cell compatibility. The presence of insulin on the surface of ICSNPs was confirmed by observing infrared absorptions of amide I and II. The mean diameter of ICSNPs as determined by dynamic light scattering was about 38 nm. Human fibroblasts were cultured in the absence and presence of cadmium sulfide nanoparticles to evaluate cytotoxicity and cell compatibility. The results showed that the cytotoxicity of insulin-immobilized cadmium sulfide nanoparticles was significantly suppressed by usage of PEG as a spacer. In addition, cell proliferation was highly facilitated by the addition of ICSNPs. The ICSNPs used in this study will be potentials to be used in bio-imaging applications.
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Affiliation(s)
- KM Kamruzzaman Selim
- Department of Polymer Science and Engineering, Kyungpook National University, Daegu 702-701, South Korea
| | - Zhi-Cai Xing
- Department of Polymer Science and Engineering, Kyungpook National University, Daegu 702-701, South Korea
| | - Moon-Jeong Choi
- Medical and Biological Engineering, Kyungpook National University, Daegu 702-701, South Korea
| | - Yongmin Chang
- Department of Diagnostic Radiology, Kyungpook National University, Dongin-dong, Daegu 700-422, South Korea
| | - Haiqing Guo
- College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - Inn-Kyu Kang
- Department of Polymer Science and Engineering, Kyungpook National University, Daegu 702-701, South Korea
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48
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Liu A, Wu L, He Z, Zhou J. Development of highly fluorescent silica nanoparticles chemically doped with organic dye for sensitive DNA microarray detection. Anal Bioanal Chem 2011; 401:2003-11. [PMID: 21822973 DOI: 10.1007/s00216-011-5258-y] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2011] [Revised: 07/07/2011] [Accepted: 07/13/2011] [Indexed: 01/07/2023]
Abstract
Increasing the sensitivity in DNA microarray hybridization can significantly enhance the capability of microarray technology for a wide range of research and clinical diagnostic applications, especially for those with limited sample biomass. To address this issue, using reverse microemulsion method and surface chemistry, a novel class of homogenous, photostable, highly fluorescent streptavidin-functionalized silica nanoparticles was developed, in which Alexa Fluor 647 (AF647) molecules were covalently embedded. The coating of bovine serum albumin on the resultant fluorescent particles can greatly eliminate nonspecific background signal interference. The thus-synthesized fluorescent nanoparticles can specifically recognize biotin-labeled target DNA hybridized to the microarray via streptavidin-biotin interaction. The response of this DNA microarray technology exhibited a linear range within 0.2 to 10 pM complementary DNA and limit of detection of 0.1 pM, enhancing microarray hybridization sensitivity over tenfold. This promising technology may be potentially applied to other binding events such as specific interactions between proteins.
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Affiliation(s)
- Aihua Liu
- Institute for Environmental Genomics, Department of Botany and Microbiology, University of Oklahoma, Norman, OK 73019, USA.
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Le Guével X, Daum N, Schneider M. Synthesis and characterization of human transferrin-stabilized gold nanoclusters. NANOTECHNOLOGY 2011; 22:275103. [PMID: 21613679 DOI: 10.1088/0957-4484/22/27/275103] [Citation(s) in RCA: 128] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Human transferrin has been biolabelled with gold nanoclusters (Au NCs) using a simple, fast and non-toxic method. These nanocrystals (<2 nm) are stabilized in the protein via sulfur groups and have a high fluorescence emission in the near infrared region (QY=4.3%; λem=695 nm). Structural investigation and photophysical measurements show a high population of clusters formed of 22-33 gold atoms covalently bound to the transferrin. In solutions with pH ranging from 5 to 10 and in buffer solutions (PBS, HEPES), those biolabelled proteins exhibit a good stability. No significant quenching effect of the fluorescent transferrin has been detected after iron loading of iron-free transferrin (apoTf) and in the presence of a specific polyclonal antibody. Additionally, antibody-induced agglomeration demonstrates no alteration in the protein activity and the receptor target ability. MTT and Vialight® Plus tests show no cytotoxicity of these labelled proteins in cells (1 µg ml(-1)-1 mg ml(-1)). Cell line experiments (A549) indicate also an uptake of the iron loaded fluorescent proteins inside cells. These remarkable data highlight the potential of a new type of non-toxic fluorescent transferrin for imaging and targeting.
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Affiliation(s)
- Xavier Le Guével
- Pharmaceutical Nanotechnology, Saarland University, Saarbrücken, Germany
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Mudshinge SR, Deore AB, Patil S, Bhalgat CM. Nanoparticles: Emerging carriers for drug delivery. Saudi Pharm J 2011; 19:129-41. [PMID: 23960751 PMCID: PMC3744999 DOI: 10.1016/j.jsps.2011.04.001] [Citation(s) in RCA: 253] [Impact Index Per Article: 19.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2011] [Accepted: 04/12/2011] [Indexed: 01/16/2023] Open
Abstract
The core objective of nanoparticles is to control and manipulate biomacromolecular constructs and supramolecular assemblies that are critical to living cells in order to improve the quality of human health. By definition, these constructs and assemblies are nanoscale and include entities such as drugs, proteins, DNA/RNA, viruses, cellular lipid bilayers, cellular receptor sites and antibody variable regions critical for immunology and are involved in events of nanoscale proportions. The emergence of such nanotherapeutics/diagnostics will allow a deeper understanding of human longevity and human ills that include cancer, cardiovascular disease and genetic disorders. A technology platform that provides a wide range of synthetic nanostructures that may be controlled as a function of size, shape and surface chemistry and scale to these nanotechnical dimensions will be a critical first step in developing appropriate tools and a scientific basis for understanding nanoparticles.
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Affiliation(s)
| | - Amol B. Deore
- NDMVP’s Institute of Pharmaceutical Sciences, Adgaon, Nashik, Maharashtra, India
| | - Sachin Patil
- Mayani College of Pharmacy, Mayani, Satara Dist., Maharashtra, India
| | - Chetan M. Bhalgat
- S.A.C. College of Pharmacy, B.G. Nagara 571448, Nagamangala (Tq), Mandya Dist., Karnataka, India
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