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Verma H, Aggarwal M, Kumar S. Opportunities and Significance of Nanoparticle–DNA Binding in Medical Biotechnology: A Review. Cureus 2022; 14:e31005. [DOI: 10.7759/cureus.31005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2022] [Accepted: 11/02/2022] [Indexed: 11/06/2022] Open
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2
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Munro CJ, Knecht MR. Solution Effects on Peptide-Mediated Reduction and Stabilization of Au Nanoparticles. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:13757-13765. [PMID: 29091728 DOI: 10.1021/acs.langmuir.7b01896] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Biomimetic methods for the preparation and application of inorganic nanomaterials represent a unique avenue to sustainably generating functional materials with long-term activity. Typically, for the fabrication of these structures, the peptide is mixed with metal ions in solution prior to the addition of an exogenous reductant such as NaBH4, leading to nanoparticle nucleation and growth. In biological systems, strong reductants such as NaBH4 are not available, thus different metal ion reduction methods must be exploited. Recent work has shown that the AuBP1 peptide (WAGAKRLVLRRE), a Au binding peptide with an N-terminal tryptophan, can spontaneously reduce Au3+ without an exogenous reductant. Remarkably, this system initially demonstrated the formation of large Au aggregates that disassemble to form individual Au nanoparticles, stabilized by the peptide bound to the inorganic surface. In this contribution, we demonstrate the significant effects of aqueous solvent-processing conditions (pH, ionic strength, and ion composition) on the rate of particle evolution. Understanding how such effects alter the metal ion reduction process and subsequent nanoparticle fabrication is important in controlling the final structure/function relationship of the resultant peptide-capped materials. This work identifies conditions that may enhance nanoparticle synthesis using biomimetic approaches where the peptide has complete control over the complexation, reduction, nucleation, and growth of nanomaterials.
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Affiliation(s)
- Catherine J Munro
- Department of Chemistry, University of Miami , 1301 Memorial Drive, Coral Gables, Florida 33146, United States
| | - Marc R Knecht
- Department of Chemistry, University of Miami , 1301 Memorial Drive, Coral Gables, Florida 33146, United States
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Alam MF, Laskar AA, Ahmed S, Shaida MA, Younus H. Colorimetric method for the detection of melamine using in-situ formed silver nanoparticles via tannic acid. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2017; 183:17-22. [PMID: 28432916 DOI: 10.1016/j.saa.2017.04.021] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/02/2016] [Revised: 03/15/2017] [Accepted: 04/16/2017] [Indexed: 06/07/2023]
Abstract
Melamine toxicity has recently attracted worldwide attention as it causes renal failure and the death of humans and animals. Therefore, developing a simple, fast and sensitive method for the routine detection of melamine is the need of the hour. Herein, we have developed a selective colorimetric method for the detection of melamine in milk samples based upon in-situ formation of silver nanoparticles (AgNPs) via tannic acid. The AgNPs thus formed were characterized by UV-Visible spectrophotometer, transmission electron microscope (TEM), zetasizer and dynamic light scattering (DLS). The AgNPs were used to detect melamine under in vitro condition and in raw milk spiked with melamine. Under optimal conditions, melamine could be selectively detected in vitro within the concentration range of 0.05-1.4μM with a limit of detection (LOD) of 0.01μM, which is lower than the strictest melamine safety requirement of 1ppm. In spiked raw milk, the recovery percentage range was 99.5-106.5% for liquid milk and 98.5-105.5% for powdered milk. The present method shows extreme selectivity with no significant interference with other substances like urea, glucose, glycine, ascorbic acid etc. This assay method does not utilize organic cosolvents, enzymatic reactions, light sensitive dye molecules and sophisticated instrumentation, thereby overcoming some of the limitations of the other conventional methods.
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Affiliation(s)
- Md Fazle Alam
- Enzymology Laboratory, Interdisciplinary Biotechnology Unit, Aligarh Muslim University, Aligarh 202002, India
| | - Amaj Ahmed Laskar
- Enzymology Laboratory, Interdisciplinary Biotechnology Unit, Aligarh Muslim University, Aligarh 202002, India
| | - Shahbaz Ahmed
- Enzymology Laboratory, Interdisciplinary Biotechnology Unit, Aligarh Muslim University, Aligarh 202002, India
| | - Mohd Azfar Shaida
- Department of Chemistry, Indian Institute of Technology, Roorkee 247667, India
| | - Hina Younus
- Enzymology Laboratory, Interdisciplinary Biotechnology Unit, Aligarh Muslim University, Aligarh 202002, India.
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Cui C, Chen H, Zuo T, Fu X, Chen L, Geng J, Li H, Xing X. Controllable synthesis of TiO2nanoparticles employing substrate/dielectrophoresis/sol-gel. CRYSTAL RESEARCH AND TECHNOLOGY 2015. [DOI: 10.1002/crat.201500177] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Chenyang Cui
- College of Life and Environmental Science; Minzu University of China; Beijing 100081 P R China
| | - Huiying Chen
- College of Life and Environmental Science; Minzu University of China; Beijing 100081 P R China
| | - Tongtong Zuo
- College of Life and Environmental Science; Minzu University of China; Beijing 100081 P R China
| | - Xiaotao Fu
- College of Life and Environmental Science; Minzu University of China; Beijing 100081 P R China
| | - Lizhen Chen
- College of Life and Environmental Science; Minzu University of China; Beijing 100081 P R China
| | - Junfeng Geng
- Institute for Materials Research and Innovation; Institute for Renewable Energy and Environmental Technologies; University of Bolton; Bolton BL3 5AB UK
| | - Hua Li
- College of Life and Environmental Science; Minzu University of China; Beijing 100081 P R China
| | - Xuan Xing
- College of Life and Environmental Science; Minzu University of China; Beijing 100081 P R China
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Yeh YC, Rana S, Mout R, Yan B, Alfonso FS, Rotello VM. Supramolecular tailoring of protein-nanoparticle interactions using cucurbituril mediators. Chem Commun (Camb) 2015; 50:5565-8. [PMID: 24728346 DOI: 10.1039/c4cc01257g] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Supramolecular modification of nanoparticle surfaces through threading of cucurbit[7]uril (CB[7]) onto surface ligands is used to regulate protein-nanoparticle interactions.
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Affiliation(s)
- Yi-Cheun Yeh
- Department of Chemistry, University of Massachusetts at Amherst, 710 North Pleasant Street, Amherst, MA 01003, USA.
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Na N, Zhang J, You Y, Su S, Ouyang J. Colloidal Au nanoparticle-based “turn on” fluorescence imaging for in-gel protein detection. J Mater Chem B 2014; 2:2654-2657. [DOI: 10.1039/c3tb21859g] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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7
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Li Z, Hüve J, Krampe C, Luppi G, Tsotsalas M, Klingauf J, De Cola L, Riehemann K. Internalization pathways of anisotropic disc-shaped zeolite L nanocrystals with different surface properties in HeLa cancer cells. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2013; 9:1809-1820. [PMID: 23335435 DOI: 10.1002/smll.201201702] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2012] [Revised: 09/03/2012] [Indexed: 06/01/2023]
Abstract
Information about the mechanisms underlying the interactions of nanoparticles with living cells is crucial for their medical application and also provides indications of the putative toxicity of such materials. Here the uptake and intracellular delivery of disc-shaped zeolite L nanocrystals as porous aminosilicates with well-defined crystal structure, uncoated as well as with COOH-, NH2 -, polyethyleneglycol (PEG)- and polyallylamine hydrochloride (PAH) surface coatings are reported. HeLa cells are used as a model system to demonstrate the relation between these particles and cancer cells. Interactions are studied in terms of their fates under diverse in vitro cell culture conditions. Differently charged coatings demonstrated dissimilar behavior in terms of agglomeration in media, serum protein adsorption, nanoparticle cytotoxicity and cell internalization. It is also found that functionalized disc-shaped zeolite L particles enter the cancer cells via different, partly not yet characterized, pathways. These in vitro results provide additional insight about low-aspect ratio anisotropic nanoparticle interactions with cancer cells and demonstrate the possibility to manipulate the interactions of nanoparticles and cells by surface coating for the use of nanoparticles in medical applications.
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Affiliation(s)
- Zhen Li
- Center for Nanotechnology (CeNTech), Heisenbergstr. 11, 48149 Muenster, Germany
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Li M, Wang N, Zang W, Ma Y, Mao H, Zhao G. Sensitive SNP Detection of KIF6 Gene by Quantum Dot-DNA Conjugate Probe-Based Assay. ANAL LETT 2013. [DOI: 10.1080/00032719.2012.723229] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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9
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Prospects of nanoparticle–DNA binding and its implications in medical biotechnology. Biotechnol Adv 2012; 30:1721-32. [DOI: 10.1016/j.biotechadv.2012.03.007] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2011] [Revised: 02/28/2012] [Accepted: 03/20/2012] [Indexed: 01/10/2023]
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Adams NM, Jackson SR, Haselton FR, Wright DW. Design, synthesis, and characterization of nucleic-acid-functionalized gold surfaces for biomarker detection. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2012; 28:1068-82. [PMID: 21905721 PMCID: PMC4211628 DOI: 10.1021/la2028862] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Nucleic-acid-functionalized gold surfaces have been used extensively for the development of biological sensors. The development of an effective biomarker detection assay requires careful design, synthesis, and characterization of probe components. In this Feature Article, we describe fundamental probe development constraints and provide a critical appraisal of the current methodologies and applications in the field. We discuss critical issues and obstacles that impede the sensitivity and reliability of the sensors to underscore the challenges that must be met to advance the field of biomarker detection.
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Affiliation(s)
- Nicholas M. Adams
- VU Station B 351822, Department of Chemistry, Vanderbilt University, Nashville, TN 37235, USA. VU Station B 351631, Department of Biomedical Engineering, Vanderbilt University, Nashville, TN 37235, USA
| | - Stephen R. Jackson
- VU Station B 351822, Department of Chemistry, Vanderbilt University, Nashville, TN 37235, USA
| | - Frederick R. Haselton
- VU Station B 351631, Department of Biomedical Engineering, Vanderbilt University, Nashville, TN 37235, USA
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Ping H, Zhang M, Li H, Li S, Chen Q, Sun C, Zhang T. Visual detection of melamine in raw milk by label-free silver nanoparticles. Food Control 2012. [DOI: 10.1016/j.foodcont.2011.07.009] [Citation(s) in RCA: 115] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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12
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Jans H, Huo Q. Gold nanoparticle-enabled biological and chemical detection and analysis. Chem Soc Rev 2012; 41:2849-66. [DOI: 10.1039/c1cs15280g] [Citation(s) in RCA: 562] [Impact Index Per Article: 46.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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Shou Q, Guo C, Yang L, Jia L, Liu C, Liu H. Effect of pH on the single-step synthesis of gold nanoparticles using PEO–PPO–PEO triblock copolymers in aqueous media. J Colloid Interface Sci 2011; 363:481-9. [DOI: 10.1016/j.jcis.2011.07.021] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2011] [Revised: 07/10/2011] [Accepted: 07/11/2011] [Indexed: 11/15/2022]
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Huy GD, Zhang M, Zuo P, Ye BC. Multiplexed analysis of silver(I) and mercury(II) ions using oligonucletide-metal nanoparticle conjugates. Analyst 2011; 136:3289-94. [PMID: 21743915 DOI: 10.1039/c1an15373k] [Citation(s) in RCA: 55] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
A colorimetric assay has been developed for the simultaneous selective detection of silver(I) and mercury(II) ions utilizing metal nanoparticles (NPs) as sensing element based on their unique surface plasmon resonance properties. In this method, sulfhydryl group modified cytosine-(C)-rich ssDNA (SH-C-ssDNA) was self-assembled on gold nanoparticles (AuNPs) to produce the AuNPs-C-ssDNA complex, and sulfhydryl group modified thymine-(T)-rich ssDNA (SH-T-ssDNA) was self-assembled on silver nanoparticles (AgNPs) to produce the AgNPs-T-ssDNA complex. Oligonucleotides (SH-C-ssDNA or SH-T-ssDNA) could enhance the AuNPs or AgNPs against salt-induced aggregation. However, the presence of silver(I) ions (Ag(+)) in the complex of ssDNA-AuNPs would reduce the stability of AuNPs due to the formation of Ag(+) mediated C-Ag(+)-C base pairs accompanied with the AuNPs color change from red to purple or even to dark blue. Moreover, the presence of mercury(II) ions (Hg(2+)) would also reduce the stability of AgNPs due to the formation of Hg(2+) mediated T-Hg(2+)-T base pairs accompanied with the AgNPs color change from yellow to brown, then to dark purple. The presence of both Ag(+) and Hg(2+) will reduce the stability of both AuNPs and AgNPs and cause the visible color change. As a result, Ag(+) and Hg(2+) could be detected qualitatively and quantitatively by the naked eye or by UV-vis spectral measurement. The lowest detectable concentration of a 5 nM mixture of Ag(+) and Hg(2+) in the river water was gotten by the UV-vis spectral measurement.
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Affiliation(s)
- Gioi Dong Huy
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Meilong RD 130, Shanghai, 200237, China
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15
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Abstract
In this brief review, gold nanoparticles conjugated with functional polymers are described from the viewpoint of application to sensing materials. The optical properties of gold nanoparticles, the synthesis of polymer-functionalized gold nanoparticles, and their analytical applications are discussed. Polymer-functionalized gold nanoparticles are categorized into two classes: biopolymer-conjugated gold nanoparticles and artificial-polymer conjugated gold nanoparticles. Fluorometric and colorimetric sensing using gold nanoparticles are focused; fluorometric detection enables us to exploit sensitive assays for practical use. Furthermore, chemical amplification using gold nanoparticles is also discussed for the sensitive probing.
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Affiliation(s)
- Nobuo Uehara
- Department of Applied Chemistry, Graduate School of Engineering, Utsunomiya University, Tochigi, Japan.
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Kihara T, Zhang Y, Hu Y, Mao Q, Tang Y, Miyake J. Effect of composition, morphology and size of nanozeolite on its in vitro cytotoxicity. J Biosci Bioeng 2011; 111:725-30. [PMID: 21393058 DOI: 10.1016/j.jbiosc.2011.01.017] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2010] [Revised: 01/16/2011] [Accepted: 01/31/2011] [Indexed: 10/18/2022]
Abstract
The extensive applications of nanoparticle materials in biomedical and biotechnological fields trigger the rapid development of nanotoxicology, because nanoparticles are reported to cause more damage than larger ones when human exposure to them. In the present manuscript, we prepared a series of zeolite nanocrystals with different frameworks, sizes, compositions and shapes, and provided the first report on their toxic difference. As our results, the toxicities of zeolite nanoparticles depend on their size, composition and shape when they are exposed to HeLa cells. The pure-silica nanozeolite silicalite-1 displays nontoxicity, but aluminum-containing nanozeolites, such as ZSM-5, LTL, and LTA, show a dose-dependent toxic manner. The different shapes of nanozeolites can lead to different cytotoxicities, while the influences of the surface charge differences of various nanozeolites on their toxicities are unconspicuous. More importantly, caspase-3 activity and LDH released assays showed that the toxic nanozeolites seem to induce cell necrosis rather than cell apoptosis by the damnification for the cell membranes. These results are expected to direct the applications of nanozeolites with different structures and shapes in biomedicine and clinic science.
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Affiliation(s)
- Takanori Kihara
- Department of Bioengineering, Graduate School of Engineering, The University of Tokyo, Tokyo 113-8656, Japan
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Marradi M, García I, Penadés S. Carbohydrate-Based Nanoparticles for Potential Applications in Medicine. PROGRESS IN MOLECULAR BIOLOGY AND TRANSLATIONAL SCIENCE 2011; 104:141-73. [DOI: 10.1016/b978-0-12-416020-0.00004-8] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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Ding N, Cao Q, Zhao H, Yang Y, Zeng L, He Y, Xiang K, Wang G. Colorimetric assay for determination of lead (II) based on its incorporation into gold nanoparticles during their synthesis. SENSORS (BASEL, SWITZERLAND) 2010; 10:11144-55. [PMID: 22163517 PMCID: PMC3231069 DOI: 10.3390/s101211144] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/10/2010] [Revised: 11/15/2010] [Accepted: 12/02/2010] [Indexed: 11/16/2022]
Abstract
In this report, we present a new method for visual detection of Pb2+. Gold nanoparticles (Au-NPs) were synthesized in one step at room temperature, using gallic acid (GA) as reducer and stabilizer. Pb2+ is added during the gold nanoparticle formation. Analysis of Pb2+ is conducted by a dual strategy, namely, colorimetry and spectrometry. During Au-NPs synthesis, addition of Pb2+ would lead to formation of Pb-GA complex, which can induce the aggregation of newly-formed small unstable gold nanoclusters. Consequently, colorimetric detection of trace Pb2+ can be realized. As the Pb2+ concentration increases, the color turns from red-wine to purple, and finally blue. This method offers a sensitive linear correlation between the shift of the absorption band (Δλ) and logarithm of Pb2+ concentration ranging from 5.0×10(-8) to 1.0×10(-6) M with a linear fit coefficient of 0.998, and a high selectivity for Pb2+ detection with a low detection limit down to 2.5×10(-8) M.
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Affiliation(s)
- Nan Ding
- College of Chemistry and Chemical Engineering, Graduate University of Chinese Academy of Sciences, 19A YuQuan Road, Beijing 100049, China; E-Mails: (N.D.); (Q.C.); (Y.Y.); (L.Z.)
| | - Qian Cao
- College of Chemistry and Chemical Engineering, Graduate University of Chinese Academy of Sciences, 19A YuQuan Road, Beijing 100049, China; E-Mails: (N.D.); (Q.C.); (Y.Y.); (L.Z.)
| | - Hong Zhao
- College of Chemistry and Chemical Engineering, Graduate University of Chinese Academy of Sciences, 19A YuQuan Road, Beijing 100049, China; E-Mails: (N.D.); (Q.C.); (Y.Y.); (L.Z.)
| | - Yimin Yang
- College of Chemistry and Chemical Engineering, Graduate University of Chinese Academy of Sciences, 19A YuQuan Road, Beijing 100049, China; E-Mails: (N.D.); (Q.C.); (Y.Y.); (L.Z.)
| | - Lixi Zeng
- College of Chemistry and Chemical Engineering, Graduate University of Chinese Academy of Sciences, 19A YuQuan Road, Beijing 100049, China; E-Mails: (N.D.); (Q.C.); (Y.Y.); (L.Z.)
| | - Yujian He
- College of Chemistry and Chemical Engineering, Graduate University of Chinese Academy of Sciences, 19A YuQuan Road, Beijing 100049, China; E-Mails: (N.D.); (Q.C.); (Y.Y.); (L.Z.)
- State Key Laboratory of Natural and Biomimetic Drugs, Peking University, Beijing 100191, China
| | - Kaixiang Xiang
- Huaihua Medical College, Hunan, 418000, China; E-Mail: (K.X.)
| | - Guangwei Wang
- Medical College, Hunan Normal University, Changsha, Hunan 410006, China
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Wang C, Ma L, Chen LM, Chai KX, Su M. Scanning calorimetric detections of multiple DNA biomarkers contained in complex fluids. Anal Chem 2010; 82:1838-43. [PMID: 20146470 DOI: 10.1021/ac902503j] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Most of the existing techniques cannot be used to detect molecular biomarkers contained in complex fluids due to issues such as enzyme inhibition or signal interference. We have developed a nanoparticle-based scanning calorimetric method for the highly sensitive detections of multiple DNA biomarkers contained in cell lysate and milk by using solid-liquid phase change nanoparticles as thermal barcodes. The detection is based on the principle that the temperature of solid will not rise above the melting temperature unless all solid is molten, thus nanoparticles have sharp melting peaks during the thermal scan process. A one-to-one correspondence can thus be created between one type of nanoparticles and one type of biomarker, i.e., multiple biomarkers can be detected at the same time using a combination of nanoparticles. The melting temperature and the heat flow reflect the type and the concentration of the biomarker, respectively. The target oligonucleotides at low concentration in cell lysate (80 pM) have been detected through thermal signal transduction. The melting temperature of nanoparticles can be designed to avoid interference from coexisting species contained in the fluids, bringing simultaneously high sensitivity and multiplicity, as well as sample preparation benefits to biomarker detections.
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Affiliation(s)
- Chaoming Wang
- NanoScience Technology Center, University of Central Florida, Orlando, Florida 32826, USA
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Ray D, Aswal VK. Step-addition Method for Enhancing the Yield of Gold Nanoparticles in Block Copolymer Solution. J MACROMOL SCI B 2010. [DOI: 10.1080/00222341003603743] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Debes Ray
- a Solid State Physics Division , Bhabha Atomic Research Centre , Mumbai, India
| | - Vinod K. Aswal
- a Solid State Physics Division , Bhabha Atomic Research Centre , Mumbai, India
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Stadler A, Chi C, van der Lelie D, Gang O. DNA-incorporating nanomaterials in biotechnological applications. Nanomedicine (Lond) 2010; 5:319-34. [PMID: 20148641 DOI: 10.2217/nnm.10.2] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
Abstract
The recently developed ability to controllably connect biological and inorganic objects on a molecular scale opens a new page in biomimetic methods with potential applications in biodetection, tissue engineering, targeted therapeutics and drug/gene delivery. Particularly in the biodetection arena, a rapid development of new platforms has largely been stimulated by a spectrum of novel nanomaterials with physical properties that offer efficient, sensitive and inexpensive molecular sensing. Recently, DNA-functionalized nano-objects have emerged as a new class of nanomaterials that can be controllably assembled in predesigned structures. Such DNA-based nanoscale structures might provide a new detection paradigm due to their regulated optical, electrical and magnetic responses, chemical heterogeneity and high local biomolecular concentration. The specific biorecognition DNA and its physical-chemical characteristics allows for an exploitation of DNA-functionalized nanomaterials for sensing of nucleic acids, while a broad tunability of DNA interactions permits extending their use for detection of proteins, small molecules and ions. We discuss the progress that was achieved in the last decade in the exploration of new detection methods based on DNA-incorporating nanomaterials as well as their applications to gene delivery. The comparison between various detection platforms, their sensitivity and selectivity, and specific applications are reviewed.
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Affiliation(s)
- Andrea Stadler
- Biology Department, Brookhaven National Laboratory, Upton, New York, NY 11973, USA
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Jia H, Titmuss S. Polymer-functionalized nanoparticles: from stealth viruses to biocompatible quantum dots. Nanomedicine (Lond) 2010; 4:951-66. [PMID: 19958231 DOI: 10.2217/nnm.09.81] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
In this article, we focus on nanoparticles that have been functionalized by polymers. We draw our examples from nanoparticle systems that have found biomedical and therapeutic applications. Our aim is to highlight the physical principles that might explain why these systems have been found to be successful in biomedical applications and to highlight other physical properties that might lead to new applications. We consider viruses, gold nanoparticles, magnetic nanoparticles and quantum dots, focussing attention on the ways in which functionalization by polymers has been used to alter the physical characteristics of the particular nanoparticle to improve its function as a possible therapy. In the case of viral vectors, polymer functionalization tunes the biocompatibility, suppressing the binding of antibodies and conferring the nanoparticle with stealth properties. By contrast, the inorganic nanoparticles comprise materials in a form that is not normally encountered in the human body, and polymer functionalization is necessary to ensure biocompatibility.
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Affiliation(s)
- H Jia
- Department of Chemistry, Physical & Theoretical Chemistry Laboratory, University of Oxford, South Parks Road, Oxford, OX1 3QZ, UK
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23
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DNA based gold nanoparticles colorimetric sensors for sensitive and selective detection of Ag(I) ions. Anal Chim Acta 2009; 644:78-82. [DOI: 10.1016/j.aca.2009.04.022] [Citation(s) in RCA: 124] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2009] [Revised: 04/14/2009] [Accepted: 04/16/2009] [Indexed: 11/18/2022]
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Affiliation(s)
- Y Charles Cao
- University of Florida, Department of Chemistry, 226 Leigh Hall, P.O. Box 117200, Gainesville, FL 32611-7200, USA
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