1
|
Ghazy A, Nyarku R, Faraj R, Bentum K, Woube Y, Williams M, Alocilja E, Abebe W. Gold Nanoparticle-Based Plasmonic Detection of Escherichia coli, Salmonella enterica, Campylobacter jejuni, and Listeria monocytogenes from Bovine Fecal Samples. Microorganisms 2024; 12:1069. [PMID: 38930450 PMCID: PMC11205818 DOI: 10.3390/microorganisms12061069] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2024] [Revised: 05/13/2024] [Accepted: 05/22/2024] [Indexed: 06/28/2024] Open
Abstract
Current diagnostic methods for detecting foodborne pathogens are time-consuming, require sophisticated equipment, and have a low specificity and sensitivity. Magnetic nanoparticles (MNPs) and plasmonic/colorimetric biosensors like gold nanoparticles (GNPs) are cost-effective, high-throughput, precise, and rapid. This study aimed to validate the use of MNPs and GNPs for the early detection of Escherichia coli O157:H7, Salmonella enterica spp., Campylobacter jejuni, and Listeria monocytogenes in bovine fecal samples. The capture efficiency (CE) of the MNPs was determined by using Salmonella Typhimurium (ATCC_13311) adjusted at an original concentration of 1.5 × 108 CFU/mL. One (1) mL of this bacterial suspension was spiked into bovine fecal suspension (1 g of fecal sample in 9 mL PBS) and serially diluted ten-fold. DNA was extracted from Salmonella Typhimurium to determine the analytical specificity and sensitivity/LOD of the GNPs. The results showed that the CE of the MNPs ranged from 99% to 100% and could capture as little as 1 CFU/mL. The LOD of the GNPs biosensor was 2.9 µg/µL. The GNPs biosensor was also tested on DNA from 38 naturally obtained bovine fecal samples. Out of the 38 fecal samples tested, 81.6% (31/38) were positive for Salmonella enterica spp., 65.8% (25/38) for C. jejuni, 55.3% (21/38) for L. monocytogenes, and 50% (19/38) for E. coli O157:H7. We have demonstrated that MNP and GNP biosensors can detect pathogens or their DNA at low concentrations. Ensuring food safety throughout the supply chain is paramount, given that these pathogens may be present in cattle feces and contaminate beef during slaughter.
Collapse
Affiliation(s)
- Ahmed Ghazy
- Veterinary Services Department of Egyptian Armed Forces, Cairo 11768, Egypt;
- Food Hygiene and Control Department, Faculty of Veterinary Medicine, Sadat University, Sadat City 32897, Egypt
- Center for Food Animal Health, Food Safety, and Food Defense, Department of Pathobiology, College of Veterinary Medicine, Tuskegee University, Tuskegee, AL 36088, USA; (R.N.); (R.F.); (K.B.); (Y.W.); (M.W.)
| | - Rejoice Nyarku
- Center for Food Animal Health, Food Safety, and Food Defense, Department of Pathobiology, College of Veterinary Medicine, Tuskegee University, Tuskegee, AL 36088, USA; (R.N.); (R.F.); (K.B.); (Y.W.); (M.W.)
| | - Rawah Faraj
- Center for Food Animal Health, Food Safety, and Food Defense, Department of Pathobiology, College of Veterinary Medicine, Tuskegee University, Tuskegee, AL 36088, USA; (R.N.); (R.F.); (K.B.); (Y.W.); (M.W.)
| | - Kingsley Bentum
- Center for Food Animal Health, Food Safety, and Food Defense, Department of Pathobiology, College of Veterinary Medicine, Tuskegee University, Tuskegee, AL 36088, USA; (R.N.); (R.F.); (K.B.); (Y.W.); (M.W.)
| | - Yilkal Woube
- Center for Food Animal Health, Food Safety, and Food Defense, Department of Pathobiology, College of Veterinary Medicine, Tuskegee University, Tuskegee, AL 36088, USA; (R.N.); (R.F.); (K.B.); (Y.W.); (M.W.)
| | - McCoy Williams
- Center for Food Animal Health, Food Safety, and Food Defense, Department of Pathobiology, College of Veterinary Medicine, Tuskegee University, Tuskegee, AL 36088, USA; (R.N.); (R.F.); (K.B.); (Y.W.); (M.W.)
| | - Evangelyn Alocilja
- Biosystems and Agricultural Engineering, Michigan State University, East Lansing, MI 48824, USA;
- Global Alliance for Rapid Diagnostics, Michigan State University, East Lansing, MI 48824, USA
| | - Woubit Abebe
- Center for Food Animal Health, Food Safety, and Food Defense, Department of Pathobiology, College of Veterinary Medicine, Tuskegee University, Tuskegee, AL 36088, USA; (R.N.); (R.F.); (K.B.); (Y.W.); (M.W.)
| |
Collapse
|
2
|
Chi R, Lin PY, Jhuo YS, Cheng FY, Ho JAA. Colorimetric detection of African swine fever (ASF)-associated microRNA based on rolling circle amplification and salt-induced gold nanoparticle aggregation. Talanta 2024; 267:125159. [PMID: 37738746 DOI: 10.1016/j.talanta.2023.125159] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2023] [Revised: 08/31/2023] [Accepted: 09/03/2023] [Indexed: 09/24/2023]
Abstract
African swine fever (ASF) is a severe viral disease with a high mortality rate in domestic and wild pigs, for which no effective vaccine and antiviral drugs are available. The great infectivity of the ASF virus highlights the need for sensitive, simple, and on-site detection assays of ASF. We herein developed a colorimetric sensing strategy for the detection of an ASF-associated miRNA, based on isothermal rolling circle amplification (RCA) and salt-induced gold nanoparticle aggregation. Ssc-miR-451 was selected as the target ASF biomarker due to its high expression in ASF virus-infected pigs. With a red-purple-blue color shifting, this biosensing platform offers convenient detection of ssc-miR-451 with a UV-Vis spectrometer or the naked eye. The proposed assay exhibits a dose-response relationship between the optical absorbance ratio (A525/A640) and the amounts of ssc-miR-451, with a detection limit calculated as 3.56 fmol (equivalent to 11.86 pM in 300 μL reaction mixture). This assay's coefficient of variation (CV%) was determined to be less than 5.95%, revealing its reproducibility is satisfactory. In addition, the newly developed method was successfully applied in the detection of spiked ssc-miR-451 in pig serum samples. In light of its simplicity, convenience (colorimetric), sensitivity, and energy efficiency (isothermal amplification), this biosensing strategy presents great potential to be applied in the local swine industry and pig farming for screening of viral diseases affecting pigs.
Collapse
Affiliation(s)
- Rong Chi
- Department of Chemistry, National Taiwan University, 10617, Taipei, Taiwan
| | - Pei-Ying Lin
- Department of Biochemical Science and Technology, National Taiwan University, 10617, Taipei, Taiwan
| | - Yi-Syuan Jhuo
- Department of Chemistry, Chinese Culture University, 11114, Taipei, Taiwan
| | - Fong-Yu Cheng
- Department of Chemistry, Chinese Culture University, 11114, Taipei, Taiwan
| | - Ja-An Annie Ho
- Department of Chemistry, National Taiwan University, 10617, Taipei, Taiwan; Department of Biochemical Science and Technology, National Taiwan University, 10617, Taipei, Taiwan; Center for Emerging Materials and Advanced Devices, National Taiwan University, 10617, Taipei, Taiwan; Center for Biotechnology, National Taiwan University, 10617, Taipei, Taiwan.
| |
Collapse
|
3
|
Danchuk O, Levchenko A, da Silva Mesquita R, Danchuk V, Cengiz S, Cengiz M, Grafov A. Meeting Contemporary Challenges: Development of Nanomaterials for Veterinary Medicine. Pharmaceutics 2023; 15:2326. [PMID: 37765294 PMCID: PMC10536669 DOI: 10.3390/pharmaceutics15092326] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2023] [Revised: 08/30/2023] [Accepted: 09/13/2023] [Indexed: 09/29/2023] Open
Abstract
In recent decades, nanotechnology has been rapidly advancing in various fields of human activity, including veterinary medicine. The review presents up-to-date information on recent advancements in nanotechnology in the field and an overview of the types of nanoparticles used in veterinary medicine and animal husbandry, their characteristics, and their areas of application. Currently, a wide range of nanomaterials has been implemented into veterinary practice, including pharmaceuticals, diagnostic devices, feed additives, and vaccines. The application of nanoformulations gave rise to innovative strategies in the treatment of animal diseases. For example, antibiotics delivered on nanoplatforms demonstrated higher efficacy and lower toxicity and dosage requirements when compared to conventional pharmaceuticals, providing a possibility to solve antibiotic resistance issues. Nanoparticle-based drugs showed promising results in the treatment of animal parasitoses and neoplastic diseases. However, the latter area is currently more developed in human medicine. Owing to the size compatibility, nanomaterials have been applied as gene delivery vectors in veterinary gene therapy. Veterinary medicine is at the forefront of the development of innovative nanovaccines inducing both humoral and cellular immune responses. The paper provides a brief overview of current topics in nanomaterial safety, potential risks associated with the use of nanomaterials, and relevant regulatory aspects.
Collapse
Affiliation(s)
- Oleksii Danchuk
- Institute of Climate-Smart Agriculture, National Academy of Agrarian Sciences, 24 Mayatska Road, Khlibodarske Village, 67667 Odesa, Ukraine;
| | - Anna Levchenko
- Department of Microbiology, Faculty of Veterinary Medicine, Ataturk University, Yakutiye, Erzurum 25240, Turkey;
| | | | - Vyacheslav Danchuk
- Ukrainian Laboratory of Quality and Safety of Agricultural Products, Mashynobudivna Str. 7, Chabany Village, 08162 Kyiv, Ukraine;
| | - Seyda Cengiz
- Milas Faculty of Veterinary Medicine, Mugla Sitki Kocman University, Mugla 48000, Turkey; (S.C.); (M.C.)
| | - Mehmet Cengiz
- Milas Faculty of Veterinary Medicine, Mugla Sitki Kocman University, Mugla 48000, Turkey; (S.C.); (M.C.)
| | - Andriy Grafov
- Department of Chemistry, University of Helsinki, A.I. Virtasen Aukio 1 (PL 55), 00560 Helsinki, Finland
| |
Collapse
|
4
|
Presnova GV, Zhdanov GA, Filatova LY, Ulyashova MM, Presnov DE, Rubtsova MY. Improvement of Seed-Mediated Growth of Gold Nanoparticle Labels for DNA Membrane-Based Assays. BIOSENSORS 2022; 13:2. [PMID: 36671837 PMCID: PMC9855534 DOI: 10.3390/bios13010002] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/02/2022] [Revised: 12/03/2022] [Accepted: 12/16/2022] [Indexed: 06/17/2023]
Abstract
Gold nanoparticles (AuNPs) are popular labels for colorimetric detection of various analytes, involving proteins, nucleic acids, viruses, and whole cells because of their outstanding optical properties, inertness, and modification variability. In this work, we present an improved approach for enhancement of color intensity for DNA membrane microarrays based on seed-mediated growth of AuNP labels. Biotin-labeled DNA is hybridized with capture oligonucleotide probes immobilized on the microarrays. Then biotin is revealed by a streptavidin-AuNP conjugate followed by the detection of AuNPs. Optimization of seed-mediated enlargement of AuNPs by the reduction of tetrachloroauric acid with hydroxylamine made it possible to change the coloring of specific spots on the microarrays from pink to a more contrasting black with minor background staining. Mean size of the resulting AuNPs was four times larger than before the enhancement. Adjusting the pH of HAuCl4 solution to 3.5 and use of a large excess of hydroxylamine increased the signal/background ratio by several times. The method's applicability was demonstrated for quantification of a short oligonucleotide of 19 bases and full-length TEM-type β-lactamase genes of 860 bp responsible for the development of bacterial resistance against β-lactam antibiotics. Improved protocol for AuNP enlargement may be further transferred to any other membrane-based assays of nucleic acids with both instrumental and visual colorimetric detection.
Collapse
Affiliation(s)
- Galina V. Presnova
- Department of Chemistry, M.V. Lomonosov Moscow State University, 119991 Moscow, Russia
| | - Gleb A. Zhdanov
- Department of Chemistry, M.V. Lomonosov Moscow State University, 119991 Moscow, Russia
| | - Luibov Yu. Filatova
- Department of Chemistry, M.V. Lomonosov Moscow State University, 119991 Moscow, Russia
| | - Mariya M. Ulyashova
- Department of Chemistry, M.V. Lomonosov Moscow State University, 119991 Moscow, Russia
| | - Denis E. Presnov
- D.V. Skobeltsyn Institute of Nuclear Physics, M.V. Lomonosov Moscow State University, 119991 Moscow, Russia
- MSU Quantum Technology Centre, 119991 Moscow, Russia
- Cryoelectronics Lab, Faculty of Physics, M.V. Lomonosov Moscow State University, 119991 Moscow, Russia
| | - Maya Yu. Rubtsova
- Department of Chemistry, M.V. Lomonosov Moscow State University, 119991 Moscow, Russia
| |
Collapse
|
5
|
Wang W, Wang X, Liu J, Lin C, Liu J, Wang J. The Integration of Gold Nanoparticles with Polymerase Chain Reaction for Constructing Colorimetric Sensing Platforms for Detection of Health-Related DNA and Proteins. BIOSENSORS 2022; 12:bios12060421. [PMID: 35735568 PMCID: PMC9220820 DOI: 10.3390/bios12060421] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/24/2022] [Revised: 06/13/2022] [Accepted: 06/14/2022] [Indexed: 05/02/2023]
Abstract
Polymerase chain reaction (PCR) is the standard tool in genetic information analysis, and the desirable detection merits of PCR have been extended to disease-related protein analysis. Recently, the combination of PCR and gold nanoparticles (AuNPs) to construct colorimetric sensing platforms has received considerable attention due to its high sensitivity, visual detection, capability for on-site detection, and low cost. However, it lacks a related review to summarize and discuss the advances in this area. This perspective gives an overview of established methods based on the combination of PCR and AuNPs for the visual detection of health-related DNA and proteins. Moreover, this work also addresses the future trends and perspectives for PCR-AuNP hybrid biosensors.
Collapse
Affiliation(s)
- Wanhe Wang
- Institute of Medical Research, Northwestern Polytechnical University, 127 West Youyi Road, Xi’an 710072, China; (W.W.); (X.W.); (J.L.); (C.L.); (J.L.)
- Research & Development Institute of Northwestern Polytechnical University in Shenzhen, 45 South Gaoxin Road, Shenzhen 518057, China
- Collaborative Innovation Center of NPU, Shanghai 201100, China
- Innovation Center NPU Chongqing, Northwestern Polytechnical University, Chongqing 400000, China
| | - Xueliang Wang
- Institute of Medical Research, Northwestern Polytechnical University, 127 West Youyi Road, Xi’an 710072, China; (W.W.); (X.W.); (J.L.); (C.L.); (J.L.)
- Research & Development Institute of Northwestern Polytechnical University in Shenzhen, 45 South Gaoxin Road, Shenzhen 518057, China
- Collaborative Innovation Center of NPU, Shanghai 201100, China
- Innovation Center NPU Chongqing, Northwestern Polytechnical University, Chongqing 400000, China
| | - Jingqi Liu
- Institute of Medical Research, Northwestern Polytechnical University, 127 West Youyi Road, Xi’an 710072, China; (W.W.); (X.W.); (J.L.); (C.L.); (J.L.)
- Research & Development Institute of Northwestern Polytechnical University in Shenzhen, 45 South Gaoxin Road, Shenzhen 518057, China
- Collaborative Innovation Center of NPU, Shanghai 201100, China
| | - Chuankai Lin
- Institute of Medical Research, Northwestern Polytechnical University, 127 West Youyi Road, Xi’an 710072, China; (W.W.); (X.W.); (J.L.); (C.L.); (J.L.)
- Research & Development Institute of Northwestern Polytechnical University in Shenzhen, 45 South Gaoxin Road, Shenzhen 518057, China
- Collaborative Innovation Center of NPU, Shanghai 201100, China
| | - Jianhua Liu
- Institute of Medical Research, Northwestern Polytechnical University, 127 West Youyi Road, Xi’an 710072, China; (W.W.); (X.W.); (J.L.); (C.L.); (J.L.)
- Research & Development Institute of Northwestern Polytechnical University in Shenzhen, 45 South Gaoxin Road, Shenzhen 518057, China
- Collaborative Innovation Center of NPU, Shanghai 201100, China
| | - Jing Wang
- Institute of Medical Research, Northwestern Polytechnical University, 127 West Youyi Road, Xi’an 710072, China; (W.W.); (X.W.); (J.L.); (C.L.); (J.L.)
- Research & Development Institute of Northwestern Polytechnical University in Shenzhen, 45 South Gaoxin Road, Shenzhen 518057, China
- Collaborative Innovation Center of NPU, Shanghai 201100, China
- Innovation Center NPU Chongqing, Northwestern Polytechnical University, Chongqing 400000, China
- Correspondence: ; Tel.: +86-13268283561
| |
Collapse
|
6
|
Manhas PK, Quintela IA, Wu VCH. Enhanced Detection of Major Pathogens and Toxins in Poultry and Livestock With Zoonotic Risks Using Nanomaterials-Based Diagnostics. Front Vet Sci 2021; 8:673718. [PMID: 34164454 PMCID: PMC8215196 DOI: 10.3389/fvets.2021.673718] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2021] [Accepted: 05/11/2021] [Indexed: 11/13/2022] Open
Abstract
Nanotechnology has gained prominence over the recent years in multiple research and application fields, including infectious diseases in healthcare, agriculture, and veterinary science. It remains an attractive and viable option for preventing, diagnosing, and treating diseases in animals and humans. The apparent efficiency of nanomaterials is due to their unique physicochemical properties and biocompatibility. With the persistence of pathogens and toxins in the poultry and livestock industries, rapid diagnostic tools are of utmost importance. Though there are many promising nanomaterials-based diagnostic tests specific to animal disease-causing agents, many have not achieved balanced sensitivity, specificity, reproducibility, and cost-effectiveness. This mini-review explores several types of nanomaterials, which provided enhancement on the sensitivity and specificity of recently reported diagnostic tools related to animal diseases. Recommendations are also provided to facilitate more targeted animal populations into the development of future diagnostic tools specifically for emerging and re-emerging animal diseases posing zoonotic risks.
Collapse
Affiliation(s)
- Priya K Manhas
- Produce Safety and Microbiology Research Unit, U.S. Department of Agriculture, Agricultural Research Service, Western Regional Research Center, Albany, CA, United States
| | - Irwin A Quintela
- Produce Safety and Microbiology Research Unit, U.S. Department of Agriculture, Agricultural Research Service, Western Regional Research Center, Albany, CA, United States
| | - Vivian C H Wu
- Produce Safety and Microbiology Research Unit, U.S. Department of Agriculture, Agricultural Research Service, Western Regional Research Center, Albany, CA, United States
| |
Collapse
|
7
|
Colorimetric aptasensor for sensitive detection of kanamycin based on target-triggered catalytic hairpin assembly amplification and DNA-gold nanoparticle probes. Microchem J 2021. [DOI: 10.1016/j.microc.2020.105858] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
|
8
|
Recent Trends in Noble Metal Nanoparticles for Colorimetric Chemical Sensing and Micro-Electronic Packaging Applications. METALS 2021. [DOI: 10.3390/met11020329] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Noble metal NPs are highly attractive candidates because of their unique combination of physical, chemical, mechanical, and structural properties. A lot of developments in this area are still fascinating the materials research community, and are broadly categorized in various sectors such as chemical sensors, biosensors, Förster resonance energy transfer (FRET), and microelectronic applications. The related function and properties of the noble metals in these areas can be further tailored by tuning their chemical, optical, and electronic properties that are influenced by their size, shape, and distribution. The most widely used Au and Ag NPs in dispersed phase below 100 nm exhibit strong color change in the visible range which alters upon aggregation of the NPs. The chemical sensing of the analyte is influenced by these NPs aggregates. In this article, we have summarized the uniqueness of noble metal NPs, their synthesis methods, nucleation and growth process, and their important applications in chemical sensing, microelectronic packaging, and Förster resonance energy transfer.
Collapse
|
9
|
Wang L, He K, Sadak O, Wang X, Wang Q, Xu X. Visual detection of in vitro nucleic acid replication by submicro- and nano-sized materials. Biosens Bioelectron 2020; 169:112602. [PMID: 32947078 DOI: 10.1016/j.bios.2020.112602] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2020] [Revised: 08/29/2020] [Accepted: 09/06/2020] [Indexed: 12/15/2022]
Abstract
The rapid growth of in vitro nucleic acid replication has offered a powerful tool for clinical diagnosis, food safety detection and environmental monitorning. Successful implementation of various isothermal nucleic acid amplification methods enables rapid replication of target sequences without the participant of a thermal cycler. Point-of-need analysis possesses great superiorities in user-friendly, instant results analysis, low manufacturing, and consumable costs. To meet the great challenge of point-of-need analysis, developing simple and rapid visual methods becomes crucial. Submicro- and nanomaterials possess unique surface properties, which enables their rapid response to DNA amplicons. Their unique optical, magnetic, catalytic, and other physical/chemical properties have been frequently employed for the visual detection of in vitro nucleic acid replications. Herein, we aim to review the submicro- and nanomaterials-based visual methods for detection of nucleic acid amplification. The visual methods are classified according to the designing strategies (e.g. LSPR, bridging flocculation, luminescence, catalytic reaction, separation, etc.). The basic principles, merits and drawbacks of each strategy are described. The application in analysis of nucleic acid targets and non-nucleic acid targets are discussed. The main challenges and future research directions are also highlighted in this rapidly emerging field.
Collapse
Affiliation(s)
- Liu Wang
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Institute of Quality and Standard for Agro-products, Zhejiang Academy of Agricultural Sciences, Hangzhou, 310021, China
| | - Kaiyu He
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Institute of Quality and Standard for Agro-products, Zhejiang Academy of Agricultural Sciences, Hangzhou, 310021, China
| | - Omer Sadak
- Department of Electrical and Electronics Engineering, Ardahan University, 75000, Turkey
| | - Xinquan Wang
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Institute of Quality and Standard for Agro-products, Zhejiang Academy of Agricultural Sciences, Hangzhou, 310021, China.
| | - Qiang Wang
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Institute of Quality and Standard for Agro-products, Zhejiang Academy of Agricultural Sciences, Hangzhou, 310021, China
| | - Xiahong Xu
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Institute of Quality and Standard for Agro-products, Zhejiang Academy of Agricultural Sciences, Hangzhou, 310021, China.
| |
Collapse
|
10
|
Feng J, Zhu Q, Wang Y. Colorimetric detection of Gadidae species using probe-modified gold nanoparticles. Food Control 2020. [DOI: 10.1016/j.foodcont.2020.107287] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
|
11
|
Li ZM, Pi T, Yan XL, Tang XM, Deng RH, Zheng XJ. Label-free and enzyme-free one-step rapid colorimetric detection of DNA methylation based on unmodified gold nanoparticles. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2020; 238:118375. [PMID: 32438293 DOI: 10.1016/j.saa.2020.118375] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/05/2020] [Revised: 03/22/2020] [Accepted: 04/14/2020] [Indexed: 06/11/2023]
Abstract
DNA methylation has been identified as one of the important causes of tumorigenesis, so it is important to develop some advanced methods for detecting and quantifying DNA methylation. In this study, a label-free and enzyme-free one-step rapid colorimetric detection of DNA methylation based on unmodified Au nanoparticles(Au NPs)has been proposed. This method can quickly, efficiently, economically and easily colorimetric detect methylated DNA only by the color change of unmodified Au NPs solution without the covalent modification of Au NPs in advance or complicated instruments for implementation with practical limitations or expensive biological enzymes or traditional organic dyes during the reaction. The strategy employed the difference in electrostatic attraction of single-stranded DNA and double-stranded DNA against salt-induced aggregation of Au NPs. The method has a DNA methylated detection limit of 8.47 nM and it is distinctly visible to detect methylated DNA with the naked eye as low as 20 nM. Furthermore, the strategy has an ability to detect methylated DNA in the presence of abundant unmethylated DNA with the detection limit of 0.13% and as low as 1% methylated DNA can be distinguished in heterogeneous samples with the naked eye. Also, the stratagem provides a convenient and rapid platform for methylated DNA detection of human serum samples in one step, which displays a huge potential for clinical diagnosis and treatment of oncological diseases.
Collapse
Affiliation(s)
- Zhi-Mei Li
- Department of Chemistry, Nanchang University, Nanchang 330031, PR China
| | - Ting Pi
- Department of Chemistry, Nanchang University, Nanchang 330031, PR China
| | - Xi-Luan Yan
- College of resources, environment and chemical engineering, Nanchang university, Nanchang 330031, PR China
| | - Xiao-Meng Tang
- Department of Chemistry, Nanchang University, Nanchang 330031, PR China
| | - Rui-Hong Deng
- Department of Chemistry, Nanchang University, Nanchang 330031, PR China
| | - Xiang-Juan Zheng
- Department of Chemistry, Nanchang University, Nanchang 330031, PR China.
| |
Collapse
|
12
|
Bilgen E, Forough M, Persil Çetinkol Ö. A conjugated gold nanoparticle-azacyanine off-on-off fluorescence probe for sensitive and selective detection of G-quadruplexes. Talanta 2020; 217:121076. [DOI: 10.1016/j.talanta.2020.121076] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2020] [Revised: 04/18/2020] [Accepted: 04/22/2020] [Indexed: 12/16/2022]
|
13
|
Li Y, Wang J, Wang S, Wang J. Rolling circle amplification based colorimetric determination of Staphylococcus aureus. Mikrochim Acta 2020; 187:119. [PMID: 31927667 DOI: 10.1007/s00604-019-4082-5] [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: 06/29/2019] [Accepted: 12/10/2019] [Indexed: 11/30/2022]
Abstract
A colorimetric microplate assay for determination of Staphylococcus aureus DNA is described. Linear padlock probes were designed to recognize target sequences. After DNA binding, the linear padlock probes were circularized by ligation and then hybridize with biotin-labeled capture probes. Biotin-labeled capture probes act as primers to initiate the RCA. The biotin-labeled RCA products hybridize with digoxin-labeled signal probes fixed on streptavidin-functionalized wells of a 96-well plate. To enhance sensitivity, an AuNP-anti-digoxigenin-POx-HRP conjugate was added to the wells and then bound to digoxin-labeled signalling probes. The oxidation of tetramethylbenzidine (TMB) by H2O2 produces a color change from colorless to blue via HRP catalysis. After the reaction was terminated, absorbance is measured at 450 nm. For target sequences of Staphylococcus aureus, the detection limit is 1.2 pM. For genomic DNA, the detection limit is 7.4 pg.μL-1. The potential application of the method was verified by analyzing spiked food samples. Graphical abstractSchematic representation of rolling circle amplification and functionalized AuNP-based colorimetric determination of Staphylococcus aureus. The method uses streptavidin-functionalized 96-well plates and RCA as a molecular tool and AuNP-anti-digoxigenin-POx-HRP as signal transduction markers to increase sensitivity.
Collapse
Affiliation(s)
- Yanan Li
- State Key Laboratory for Food Nutrition and Safety, College of Food Science and Engineering, Tianjin University of Science and Technology, 29 The Thirteenth Road, Tianjin Economy and Technology Development Area, Tianjin, 300457, People's Republic of China
| | - Junying Wang
- Chinese Academy of Agricultural Sciences, Biotechnology Research Institute, Haidian District, Beijing, 010010, People's Republic of China
| | - Shuo Wang
- Medical college, Nankai University, No.38 Tongyan Road, Jinnan District, Tianjin, 300350, People's Republic of China.
| | - Junping Wang
- State Key Laboratory for Food Nutrition and Safety, College of Food Science and Engineering, Tianjin University of Science and Technology, 29 The Thirteenth Road, Tianjin Economy and Technology Development Area, Tianjin, 300457, People's Republic of China.
| |
Collapse
|
14
|
Wang J, Li T, Shen R, Li G, Ling L. Polymerase Chain Reaction-Dynamic Light Scattering Sensor for DNA and Protein by Using Both Replication and Cleavage Properties of Taq Polymerase. Anal Chem 2019; 91:3429-3435. [DOI: 10.1021/acs.analchem.8b04929] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Jing Wang
- School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, P. R. China
| | - Tingting Li
- School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, P. R. China
| | - Ruidi Shen
- School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, P. R. China
| | - Gongke Li
- School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, P. R. China
| | - Liansheng Ling
- School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, P. R. China
| |
Collapse
|
15
|
Sensitive DNA detection by polymerase chain reaction with gold nanoparticles. Anal Chim Acta 2018; 1038:105-111. [DOI: 10.1016/j.aca.2018.07.006] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2018] [Revised: 06/28/2018] [Accepted: 07/02/2018] [Indexed: 01/21/2023]
|
16
|
Walper SA, Lasarte Aragonés G, Sapsford KE, Brown CW, Rowland CE, Breger JC, Medintz IL. Detecting Biothreat Agents: From Current Diagnostics to Developing Sensor Technologies. ACS Sens 2018; 3:1894-2024. [PMID: 30080029 DOI: 10.1021/acssensors.8b00420] [Citation(s) in RCA: 85] [Impact Index Per Article: 14.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Although a fundamental understanding of the pathogenicity of most biothreat agents has been elucidated and available treatments have increased substantially over the past decades, they still represent a significant public health threat in this age of (bio)terrorism, indiscriminate warfare, pollution, climate change, unchecked population growth, and globalization. The key step to almost all prevention, protection, prophylaxis, post-exposure treatment, and mitigation of any bioagent is early detection. Here, we review available methods for detecting bioagents including pathogenic bacteria and viruses along with their toxins. An introduction placing this subject in the historical context of previous naturally occurring outbreaks and efforts to weaponize selected agents is first provided along with definitions and relevant considerations. An overview of the detection technologies that find use in this endeavor along with how they provide data or transduce signal within a sensing configuration follows. Current "gold" standards for biothreat detection/diagnostics along with a listing of relevant FDA approved in vitro diagnostic devices is then discussed to provide an overview of the current state of the art. Given the 2014 outbreak of Ebola virus in Western Africa and the recent 2016 spread of Zika virus in the Americas, discussion of what constitutes a public health emergency and how new in vitro diagnostic devices are authorized for emergency use in the U.S. are also included. The majority of the Review is then subdivided around the sensing of bacterial, viral, and toxin biothreats with each including an overview of the major agents in that class, a detailed cross-section of different sensing methods in development based on assay format or analytical technique, and some discussion of related microfluidic lab-on-a-chip/point-of-care devices. Finally, an outlook is given on how this field will develop from the perspective of the biosensing technology itself and the new emerging threats they may face.
Collapse
Affiliation(s)
- Scott A. Walper
- Center for Bio/Molecular Science and Engineering, Code 6900, U.S. Naval Research Laboratory, Washington, D.C. 20375, United States
| | - Guillermo Lasarte Aragonés
- Center for Bio/Molecular Science and Engineering, Code 6900, U.S. Naval Research Laboratory, Washington, D.C. 20375, United States
- College of Science, George Mason University Fairfax, Virginia 22030, United States
| | - Kim E. Sapsford
- OMPT/CDRH/OIR/DMD Bacterial Respiratory and Medical Countermeasures Branch, U.S. Food and Drug Administration, Silver Spring, Maryland 20993, United States
| | - Carl W. Brown
- Center for Bio/Molecular Science and Engineering, Code 6900, U.S. Naval Research Laboratory, Washington, D.C. 20375, United States
- College of Science, George Mason University Fairfax, Virginia 22030, United States
| | - Clare E. Rowland
- Center for Bio/Molecular Science and Engineering, Code 6900, U.S. Naval Research Laboratory, Washington, D.C. 20375, United States
- National Research Council, Washington, D.C. 20036, United States
| | - Joyce C. Breger
- Center for Bio/Molecular Science and Engineering, Code 6900, U.S. Naval Research Laboratory, Washington, D.C. 20375, United States
| | - Igor L. Medintz
- Center for Bio/Molecular Science and Engineering, Code 6900, U.S. Naval Research Laboratory, Washington, D.C. 20375, United States
| |
Collapse
|
17
|
Jazayeri MH, Aghaie T, Avan A, Vatankhah A, Ghaffari MRS. Colorimetric detection based on gold nano particles (GNPs): An easy, fast, inexpensive, low-cost and short time method in detection of analytes (protein, DNA, and ion). SENSING AND BIO-SENSING RESEARCH 2018. [DOI: 10.1016/j.sbsr.2018.05.002] [Citation(s) in RCA: 49] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/17/2022] Open
|
18
|
Determination of bacterial DNA based on catalytic oxidation of cysteine by G-quadruplex DNAzyme generated from asymmetric PCR: Application to the colorimetric detection of Staphylococcus aureus. Mikrochim Acta 2018; 185:410. [DOI: 10.1007/s00604-018-2935-y] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2018] [Accepted: 07/23/2018] [Indexed: 02/01/2023]
|
19
|
Ghasemi A, Rabiee N, Ahmadi S, Hashemzadeh S, Lolasi F, Bozorgomid M, Kalbasi A, Nasseri B, Shiralizadeh Dezfuli A, Aref AR, Karimi M, Hamblin MR. Optical assays based on colloidal inorganic nanoparticles. Analyst 2018; 143:3249-3283. [PMID: 29924108 PMCID: PMC6042520 DOI: 10.1039/c8an00731d] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Colloidal inorganic nanoparticles have wide applications in the detection of analytes and in biological assays. A large number of these assays rely on the ability of gold nanoparticles (AuNPs, in the 20 nm diameter size range) to undergo a color change from red to blue upon aggregation. AuNP assays can be based on cross-linking, non-cross linking or unmodified charge-based aggregation. Nucleic acid-based probes, monoclonal antibodies, and molecular-affinity agents can be attached by covalent or non-covalent means. Surface plasmon resonance and SERS techniques can be utilized. Silver NPs also have attractive optical properties (higher extinction coefficient). Combinations of AuNPs and AgNPs in nanocomposites can have additional advantages. Magnetic NPs and ZnO, TiO2 and ZnS as well as insulator NPs including SiO2 can be employed in colorimetric assays, and some can act as peroxidase mimics in catalytic applications. This review covers the synthesis and stabilization of inorganic NPs and their diverse applications in colorimetric and optical assays for analytes related to environmental contamination (metal ions and pesticides), and for early diagnosis and monitoring of diseases, using medically important biomarkers.
Collapse
Affiliation(s)
- Amir Ghasemi
- Department of Materials Science and Engineering, Sharif University of Technology, Tehran, Iran and Advances Nanobiotechnology and Nanomedicine Research Group (ANNRG), Iran University of Medical Sciences, Tehran, Iran
| | - Navid Rabiee
- Department of Chemistry, Shahid Beheshti University, Tehran, Iran
| | - Sepideh Ahmadi
- Advances Nanobiotechnology and Nanomedicine Research Group (ANNRG), Iran University of Medical Sciences, Tehran, Iran and Department of Biology, Faculty of Basic Sciences, University of Zabol, Zabol, Iran
| | - Shabnam Hashemzadeh
- Department of Medical Physics and Biomedical Engineering, Faculty of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran and Research Center for Pharmaceutical Nanotechnology, Biomedicine Institute, Tabriz University of Medical Science, Tabriz, Iran
| | - Farshad Lolasi
- Department of Biotechnology, Faculty of Advanced Sciences and Technologies, University of Isfahan, Isfahan, 81746-73441, Iran and Department of Agronomy and Plant Breeding, College of Agriculture, Isfahan University of Technology, Isfahan, Iran
| | - Mahnaz Bozorgomid
- Department of Pharmaceutical Chemistry, Islamic Azad University of Pharmaceutical Sciences Branch, Tehran, Iran
| | - Alireza Kalbasi
- Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, MA, USA
| | - Behzad Nasseri
- Departments of Microbiology and Microbial Biotechnology and Nanobiotechnology, Faculty of Life Sciences and Biotechnology, Shahid Beheshti University, Tehran, Iran and Chemical Engineering Deptartment and Bioengineeing Division, Hacettepe University, 06800, Beytepe, Ankara, Turkey
| | - Amin Shiralizadeh Dezfuli
- Advances Nanobiotechnology and Nanomedicine Research Group (ANNRG), Iran University of Medical Sciences, Tehran, Iran and Department of Medical Nanotechnology, Faculty of Advanced Technologies in Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Amir Reza Aref
- Belfer Center for Applied Cancer Science, Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA, USA
| | - Mahdi Karimi
- Cellular and Molecular Research Center, Iran University of Medical Sciences, Tehran, Iran. and Department of Medical Nanotechnology, Faculty of Advanced Technologies in Medicine, Iran University of Medical Sciences, Tehran, Iran and Wellman Center for Photomedicine, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02114, USA.
| | - Michael R Hamblin
- Wellman Center for Photomedicine, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02114, USA. and Department of Dermatology, Harvard Medical School, Boston, MA 02115, USA and Harvard-MIT Division of Health Sciences and Technology, Cambridge, MA 02139, USA
| |
Collapse
|
20
|
Xu Z, Bi X, Huang Y, Che Z, Chen X, Fu M, Tian H, Yang S. Sensitive colorimetric detection of Salmonella enteric
serovar typhimurium based on a gold nanoparticle conjugated bifunctional oligonucleotide probe and aptamer. J Food Saf 2018. [DOI: 10.1111/jfs.12482] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Zhenzhen Xu
- Key Laboratory of Agrifood Safety and Quality, Ministry of Agriculture of China; Institute of Quality Standard and Testing Technology for Agro-Products, Chinese Academy of Agricultural Sciences; Beijing China
| | - Xiufang Bi
- Key Laboratory of Grain and Oil Engineering and Food Safety of Sichuan Province, School of Food and Bioengineering; Xihua University; Chengdu China
| | - Yukun Huang
- Key Laboratory of Grain and Oil Engineering and Food Safety of Sichuan Province, School of Food and Bioengineering; Xihua University; Chengdu China
- Collaborative Innovation Center of Food Quality and Safety in Sichuan Province; Xihua University; Chengdu China
| | - Zhenming Che
- Key Laboratory of Grain and Oil Engineering and Food Safety of Sichuan Province, School of Food and Bioengineering; Xihua University; Chengdu China
- Collaborative Innovation Center of Food Quality and Safety in Sichuan Province; Xihua University; Chengdu China
| | - Xianggui Chen
- Key Laboratory of Grain and Oil Engineering and Food Safety of Sichuan Province, School of Food and Bioengineering; Xihua University; Chengdu China
- Collaborative Innovation Center of Food Quality and Safety in Sichuan Province; Xihua University; Chengdu China
| | - Mingwen Fu
- Key Laboratory of Grain and Oil Engineering and Food Safety of Sichuan Province, School of Food and Bioengineering; Xihua University; Chengdu China
| | - Hongyun Tian
- The Provincial Food and Drug Inspection Institute of Shan Dong; Jinan China
| | - Shuming Yang
- Key Laboratory of Agrifood Safety and Quality, Ministry of Agriculture of China; Institute of Quality Standard and Testing Technology for Agro-Products, Chinese Academy of Agricultural Sciences; Beijing China
| |
Collapse
|
21
|
The mechanism of the adsorption of dsDNA on citrate-stabilized gold nanoparticles and a colorimetric and visual method for detecting the V600E point mutation of the BRAF gene. Mikrochim Acta 2018; 185:240. [PMID: 29594675 DOI: 10.1007/s00604-018-2775-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2018] [Accepted: 03/15/2018] [Indexed: 10/17/2022]
Abstract
A study is presented on the binding kinetics and mechanism of the adsorption of dsDNA on citrate-capped gold nanoparticles (AuNPs). Methods include fluorescence titration, isothermal calorimetry (ITC) titration, dynamic light scattering and gel electrophoresis. It is found that the fluorescence of probe DNA (labeled with Rhodamine Green and measured at excitation/emission peaks of 498/531 nm) is quenched by addition of AuNPs. The Stern-Volmer quenching constant (Ksv) is 1.67 × 10^9 L·mol-1 at 308 K and drops with increasing temperature. The quenching mechanism is mainly static. The results of both fluorescence titrations and ITC show negative values for ΔH and ΔS values. This shows ion-induced dipole-dipole interaction to be the main attractive forces between dsDNA and AuNPs, while electrostatic interactions result in repulsion. The repulsive forces lead to a lower affinity between dsDNA and AuNPs (compared to single-strand DNA). It is also found that dsDNA can prevent the aggregation of AuNPs which is accompanied by a color change from red into blue. The visual detection limit with bare eyes for dsDNA1 is 36 pM. Based on these findings, a colorimetric method was developed to detect the proto-oncogene of serine/threonine-protein kinase B-Raf V600E point mutation in HT29, Ec109, A549, Huh-7 and SW480 cell lines. Graphical abstract Schematic of the salt-induced aggregation of uncapped gold nanoparticles (AuNPs) which leads to a color change from red to blue. If the AuNPs are coated with dsDNA, aggregation is suppressed.
Collapse
|
22
|
Baetsen-Young AM, Vasher M, Matta LL, Colgan P, Alocilja EC, Day B. Direct colorimetric detection of unamplified pathogen DNA by dextrin-capped gold nanoparticles. Biosens Bioelectron 2018; 101:29-36. [DOI: 10.1016/j.bios.2017.10.011] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2017] [Revised: 09/22/2017] [Accepted: 10/03/2017] [Indexed: 02/05/2023]
|
23
|
Ma H, Li Z, Xue N, Cheng Z, Miao X. A gold nanoparticle based fluorescent probe for simultaneous recognition of single-stranded DNA and double-stranded DNA. Mikrochim Acta 2018; 185:93. [DOI: 10.1007/s00604-017-2633-1] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2017] [Accepted: 12/22/2017] [Indexed: 12/22/2022]
|
24
|
Kim J, Mohamed MAA, Zagorovsky K, Chan WCW. State of diagnosing infectious pathogens using colloidal nanomaterials. Biomaterials 2017; 146:97-114. [PMID: 28898761 PMCID: PMC7124370 DOI: 10.1016/j.biomaterials.2017.08.013] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2017] [Revised: 08/07/2017] [Accepted: 08/13/2017] [Indexed: 01/08/2023]
Abstract
Infectious diseases are a major global threat that accounts for one of the leading causes of global mortality and morbidity. Prompt diagnosis is a crucial first step in the management of infectious threats, which aims to quarantine infected patients to avoid contacts with healthy individuals and deliver effective treatments prior to further spread of diseases. This review article discusses current advances of diagnostic systems using colloidal nanomaterials (e.g., gold nanoparticles, quantum dots, magnetic nanoparticles) for identifying and differentiating infectious pathogens. The challenges involved in the clinical translation of these emerging nanotechnology based diagnostic devices will also be discussed.
Collapse
Affiliation(s)
- Jisung Kim
- Institute of Biomaterials and Biomedical Engineering, University of Toronto, Toronto, Ontario M5S 3G9, Canada; Terrence Donnelly Centre for Cellular and Bimolecular Research, University of Toronto, Toronto, Ontario M5S 3E1, Canada; Centre for Global Engineering, University of Toronto, Toronto, Ontario M5S 1A4, Canada
| | - Mohamed A Abdou Mohamed
- Institute of Biomaterials and Biomedical Engineering, University of Toronto, Toronto, Ontario M5S 3G9, Canada; Terrence Donnelly Centre for Cellular and Bimolecular Research, University of Toronto, Toronto, Ontario M5S 3E1, Canada; Botany and Microbiology Department, Faculty of Science, Zagazig University, Egypt
| | - Kyryl Zagorovsky
- Institute of Biomaterials and Biomedical Engineering, University of Toronto, Toronto, Ontario M5S 3G9, Canada; Terrence Donnelly Centre for Cellular and Bimolecular Research, University of Toronto, Toronto, Ontario M5S 3E1, Canada
| | - Warren C W Chan
- Institute of Biomaterials and Biomedical Engineering, University of Toronto, Toronto, Ontario M5S 3G9, Canada; Terrence Donnelly Centre for Cellular and Bimolecular Research, University of Toronto, Toronto, Ontario M5S 3E1, Canada; Department of Chemistry, University of Toronto, Toronto, Ontario M5S 3H6, Canada; Department of Chemical Engineering, University of Toronto, Toronto, Ontario M5S 3E5, Canada; Department of Materials Science and Engineering, University of Toronto, Toronto, Ontario M5S 3E4, Canada.
| |
Collapse
|
25
|
|
26
|
Design and Fabrication a Gold Nanoparticle-DNA Based Nanobiosensor for Detection of microRNA Involved in Alzheimer's Disease. J Fluoresc 2016; 27:603-610. [DOI: 10.1007/s10895-016-1988-8] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2016] [Accepted: 11/09/2016] [Indexed: 01/18/2023]
|
27
|
Chen C, Zou Z, Chen L, Ji X, He Z. Functionalized magnetic microparticle-based colorimetric platform for influenza A virus detection. NANOTECHNOLOGY 2016; 27:435102. [PMID: 27655150 PMCID: PMC7103194 DOI: 10.1088/0957-4484/27/43/435102] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/22/2016] [Revised: 08/06/2016] [Accepted: 08/24/2016] [Indexed: 05/04/2023]
Abstract
A colorimetric platform for influenza A virus detection was developed by using the high efficiency of enzymatic catalysis and the reduction of gold ions with hydrogen peroxide. Aptamer-functionalized magnetic microparticles were synthesized to capture the influenza A virus. This was followed by the binding of ConA-GOx-AuNPs to the H3N2 virus through the ConA-glycan interaction. The sandwich complex was subsequently dispersed in glucose solution to trigger an enzymatic reaction to produce hydrogen peroxide, which controlled the growth of gold nanoparticles and produced colored solutions. The determination of H3N2 concentration was realized by comparing the two differently colored gold nanoparticles. This method could detect the target virus as low as 11.16 μg ml(-1). Furthermore, it opens new opportunities for sensitive and colorimetric detection of viruses and proteins.
Collapse
Affiliation(s)
- Chaohui Chen
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, People’s Republic of China
- Institute for Interdisciplinary Research & Key Laboratory of Optoelectronic Chemical Materials and Devices, Ministry of Education, Jianghan University, Wuhan 430056, People’s Republic of China
| | - Zhong Zou
- Key Laboratory of Agricultural Microbiology, College of Science, Huazhong Agricultural University, Wuhan 430070, People’s Republic of China
| | - Lu Chen
- Key Laboratory of Agricultural Microbiology, College of Science, Huazhong Agricultural University, Wuhan 430070, People’s Republic of China
| | - Xinghu Ji
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, People’s Republic of China
| | - Zhike He
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, People’s Republic of China
| |
Collapse
|
28
|
Torres-Sangiao E, Holban AM, Gestal MC. Advanced Nanobiomaterials: Vaccines, Diagnosis and Treatment of Infectious Diseases. Molecules 2016; 21:molecules21070867. [PMID: 27376260 PMCID: PMC6273484 DOI: 10.3390/molecules21070867] [Citation(s) in RCA: 76] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2016] [Revised: 06/21/2016] [Accepted: 06/25/2016] [Indexed: 11/16/2022] Open
Abstract
The use of nanoparticles has contributed to many advances due to their important properties such as, size, shape or biocompatibility. The use of nanotechnology in medicine has great potential, especially in medical microbiology. Promising data show the possibility of shaping immune responses and fighting severe infections using synthetic materials. Different studies have suggested that the addition of synthetic nanoparticles in vaccines and immunotherapy will have a great impact on public health. On the other hand, antibiotic resistance is one of the major concerns worldwide; a recent report of the World Health Organization (WHO) states that antibiotic resistance could cause 300 million deaths by 2050. Nanomedicine offers an innovative tool for combating the high rates of resistance that we are fighting nowadays, by the development of both alternative therapeutic and prophylaxis approaches and also novel diagnosis methods. Early detection of infectious diseases is the key to a successful treatment and the new developed applications based on nanotechnology offer an increased sensibility and efficiency of the diagnosis. The aim of this review is to reveal and discuss the main advances made on the science of nanomaterials for the prevention, diagnosis and treatment of infectious diseases. Highlighting innovative approaches utilized to: (i) increasing the efficiency of vaccines; (ii) obtaining shuttle systems that require lower antibiotic concentrations; (iii) developing coating devices that inhibit microbial colonization and biofilm formation.
Collapse
Affiliation(s)
- Eva Torres-Sangiao
- Department of Microbiology and Parasitology, University Santiago de Compostela, Galicia 15782, Spain.
| | - Alina Maria Holban
- Department of Microbiology and Immunology, Faculty of Biology, University of Bucharest, Bucharest 060101, Romania.
- Department of Science and Engineering of Oxide Materials and Nanomaterials, Faculty of Applied Chemistry and Materials Science, University Politehnica of Bucharest, Bucharest 060042, Romania.
| | - Monica Cartelle Gestal
- Department of Infectious Diseases, College of Veterinary Medicine, University of Georgia, Athens (UGA), GA 30602, USA.
| |
Collapse
|
29
|
|
30
|
Abstract
Recent advances in Au NP based optical sensing systems for various analytes based on absorption, fluorescence and SERS are summarized.
Collapse
Affiliation(s)
- Zhiqin Yuan
- State Key Laboratory of Chemical Resource Engineering
- Beijing University of Chemical Technology
- Beijing 100029
- China
| | - Cho-Chun Hu
- Department of Applied Science
- National Taitung University
- Taitung 95002
- Taiwan
| | - Huan-Tsung Chang
- Department of Chemistry
- National Taiwan University
- Taipei 106
- Taiwan
| | - Chao Lu
- State Key Laboratory of Chemical Resource Engineering
- Beijing University of Chemical Technology
- Beijing 100029
- China
| |
Collapse
|
31
|
Aliofkhazraei M, Pedrosa P, Carlos FF, Veigas B, Baptista PV. Gold Nanoparticles for DNA/RNA-Based Diagnostics. HANDBOOK OF NANOPARTICLES 2015. [PMCID: PMC7123017 DOI: 10.1007/978-3-319-15338-4_31] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
The remarkable physicochemical properties of gold nanoparticles (AuNPs) have prompted development in exploring biomolecular interactions with AuNPs-containing systems, pursuing biomedical applications in diagnostics. Among these applications, AuNPs have been remarkably useful for the development of DNA/RNA detection and characterization systems for diagnostics, including systems suitable for point of need. Here, emphasis will be on available molecular detection schemes of relevant pathogens and their molecular characterization, genomic sequences associated with medical conditions (including cancer), mutation and polymorphism identification, and the quantification of gene expression.
Collapse
|
32
|
Wang X, Li W, Li Z, Li H, Xu D. A highly sensitive fluorescence turn-on platform with silver nanoparticles aptasening for human platelet-derived growth factor-BB. Talanta 2015; 144:1273-8. [PMID: 26452958 DOI: 10.1016/j.talanta.2015.07.019] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2015] [Revised: 06/29/2015] [Accepted: 07/06/2015] [Indexed: 12/22/2022]
Abstract
In this paper, we demonstrated a simple and highly sensitive fluorescence platform for protein detection. Silver nanoparticles (AgNPs) worked as carriers and quenchers for FAM labeled aptamers (FAM-apt). Biotin labeled aptamers (Bio-apt), FAM-apt functionalized AgNPs (Ag-FAM-apt), and a target protein, human platelet-derived growth factor-BB (PDGF-BB) could form a sandwich-type complex. Once the etching solvents were added, AgNPs were dissolved and the fluorescence resonance energy transfer (FRET) between AgNPs and FAM was broken. FAM-apt were no longer quenched and released into the solution in the 96-well microplates, so the fluorescence signal would turn from "off" state to "on" state. This method had possessed several advantages: Firstly, increased specificity which was contributed by the sandwich binding of aptamers; Secondly, quenching ability of AgNPs which was utilized to make signal turn-on; Thirdly, high throughout in which 96 samples could be detected simultaneously. The results showed a linear relationship between fluorescence intensity and PDGF-BB concentration (10 ng mL(-1)-100 ng mL(-1)), and the detection limit was 7 ng mL(-1). This simple and sensitive method would have a promising future for development and application.
Collapse
Affiliation(s)
- Xi Wang
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, 22 Hankou Road, Nanjing 210093, China
| | - Wei Li
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, 22 Hankou Road, Nanjing 210093, China
| | - Zhonghui Li
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, 22 Hankou Road, Nanjing 210093, China
| | - Hui Li
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, 22 Hankou Road, Nanjing 210093, China.
| | - Danke Xu
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, 22 Hankou Road, Nanjing 210093, China.
| |
Collapse
|
33
|
Verma MS, Rogowski JL, Jones L, Gu FX. Colorimetric biosensing of pathogens using gold nanoparticles. Biotechnol Adv 2015; 33:666-80. [PMID: 25792228 DOI: 10.1016/j.biotechadv.2015.03.003] [Citation(s) in RCA: 109] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2014] [Revised: 02/08/2015] [Accepted: 03/02/2015] [Indexed: 11/15/2022]
Abstract
Rapid detection of pathogens is crucial to minimize adverse health impacts of nosocomial, foodborne, and waterborne diseases. Gold nanoparticles are extremely successful at detecting pathogens due to their ability to provide a simple and rapid color change when their environment is altered. Here, we review general strategies of implementing gold nanoparticles in colorimetric biosensors. First, we highlight how gold nanoparticles have improved conventional genomic analysis methods by lowering detection limits while reducing assay times. Then, we focus on emerging point-of-care technologies that aim at pathogen detection using simpler assays. These advances will facilitate the implementation of gold nanoparticle-based biosensors in diverse environments throughout the world and help prevent the spread of infectious diseases.
Collapse
Affiliation(s)
- Mohit S Verma
- Department of Chemical Engineering, University of Waterloo, 200 University Avenue W, Waterloo, Ontario N2L 3G1, Canada; Waterloo Institute for Nanotechnology, University of Waterloo, 200 University Avenue W, Waterloo, Ontario N2L 3G1, Canada
| | - Jacob L Rogowski
- Department of Chemical Engineering, University of Waterloo, 200 University Avenue W, Waterloo, Ontario N2L 3G1, Canada; Waterloo Institute for Nanotechnology, University of Waterloo, 200 University Avenue W, Waterloo, Ontario N2L 3G1, Canada
| | - Lyndon Jones
- Department of Chemical Engineering, University of Waterloo, 200 University Avenue W, Waterloo, Ontario N2L 3G1, Canada; Center for Contact Lens Research, University of Waterloo, 200 University Avenue W, Waterloo, Ontario N2L 3G1, Canada
| | - Frank X Gu
- Department of Chemical Engineering, University of Waterloo, 200 University Avenue W, Waterloo, Ontario N2L 3G1, Canada; Waterloo Institute for Nanotechnology, University of Waterloo, 200 University Avenue W, Waterloo, Ontario N2L 3G1, Canada.
| |
Collapse
|
34
|
Zarei M, Goharshadi EK, Ahmadzadeh H, Samiee S. Improvement of heat dissipation in agarose gel electrophoresis by metal oxide nanoparticles. RSC Adv 2015. [DOI: 10.1039/c5ra19678g] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Joule heating is a primary limitation in slab gel electrophoresis which is a gold standard method in biochemistry and biotechnology.
Collapse
Affiliation(s)
- Mohammad Zarei
- Department of Chemistry
- Ferdowsi University of Mashhad
- Mashhad 91779
- Iran
| | - Elaheh K. Goharshadi
- Department of Chemistry
- Ferdowsi University of Mashhad
- Mashhad 91779
- Iran
- Center of Nano Research
| | | | - Sara Samiee
- Department of Chemistry
- Ferdowsi University of Mashhad
- Mashhad 91779
- Iran
| |
Collapse
|
35
|
Zhu Y, Wang G, Sha L, Qiu Y, Jiang H, Zhang X. A ratiometric colorimetric detection of the folate receptor based on terminal protection of small-molecule-linked DNA. Analyst 2015; 140:1260-4. [DOI: 10.1039/c4an02115k] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Development of strategies for the sensitive and selective detection of the folate receptor (FR) that are simple and low cost is of great importance for assessing cancer therapeutics due to its crucial role in physiological, pharmacological and pathological processes.
Collapse
Affiliation(s)
- Yanhong Zhu
- Anhui Key Laboratory of Chem-Biosensing
- College of Chemistry and Materials Science
- Center for Nanoscience and Nanotechnology
- Anhui Normal University
- Wuhu
| | - Guangfeng Wang
- Anhui Key Laboratory of Chem-Biosensing
- College of Chemistry and Materials Science
- Center for Nanoscience and Nanotechnology
- Anhui Normal University
- Wuhu
| | - Liang Sha
- Anhui Key Laboratory of Chem-Biosensing
- College of Chemistry and Materials Science
- Center for Nanoscience and Nanotechnology
- Anhui Normal University
- Wuhu
| | - Yuwei Qiu
- Anhui Key Laboratory of Chem-Biosensing
- College of Chemistry and Materials Science
- Center for Nanoscience and Nanotechnology
- Anhui Normal University
- Wuhu
| | - Hong Jiang
- Anhui Key Laboratory of Chem-Biosensing
- College of Chemistry and Materials Science
- Center for Nanoscience and Nanotechnology
- Anhui Normal University
- Wuhu
| | - Xiaojun Zhang
- Anhui Key Laboratory of Chem-Biosensing
- College of Chemistry and Materials Science
- Center for Nanoscience and Nanotechnology
- Anhui Normal University
- Wuhu
| |
Collapse
|
36
|
Wang DB, Tian B, Zhang ZP, Wang XY, Fleming J, Bi LJ, Yang RF, Zhang XE. Detection of Bacillus anthracis spores by super-paramagnetic lateral-flow immunoassays based on "Road Closure". Biosens Bioelectron 2014; 67:608-14. [PMID: 25294802 DOI: 10.1016/j.bios.2014.09.067] [Citation(s) in RCA: 73] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2014] [Revised: 09/06/2014] [Accepted: 09/23/2014] [Indexed: 12/20/2022]
Abstract
Detection of Bacillus anthracis in the field, whether as a natural infection or as a biothreat remains challenging. Here we have developed a new lateral-flow immunochromatographic assay (LFIA) for B. anthracis spore detection based on the fact that conjugates of B. anthracis spores and super-paramagnetic particles labeled with antibodies will block the pores of chromatographic strips and form retention lines on the strips, instead of the conventionally reported test lines and control lines in classic LFIA. As a result, this new LFIA can simultaneously realize optical, magnetic and naked-eye detection by analyzing signals from the retention lines. As few as 500-700 pure B. anthracis spores can be recognized with CV values less than 8.31% within 5 min of chromatography and a total time of 20 min. For powdery sample tests, this LFIA can endure interference from 25% (w/v) milk, 10% (w/v) baking soda and 10% (w/v) starch without any sample pre-treatment, and has a corresponding detection limit of 6×10(4) spores/g milk powder, 2×10(5) spores/g starch and 5×10(5) spores/g baking soda. Compared with existing methods, this new approach is very competitive in terms of sensitivity, specificity, cost and ease of operation. This proof-of-concept study can also be extended for detection of many other large-sized analytes.
Collapse
Affiliation(s)
- Dian-Bing Wang
- National Laboratory of Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China
| | - Bo Tian
- State Key Laboratory of Virology, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan, China; University of Chinese Academy of Sciences, Beijing, China
| | - Zhi-Ping Zhang
- State Key Laboratory of Virology, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan, China
| | - Xu-Ying Wang
- State Key Laboratory of Virology, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan, China
| | - Joy Fleming
- National Laboratory of Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China
| | - Li-Jun Bi
- National Laboratory of Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China
| | - Rui-Fu Yang
- State Key Laboratory of Pathogen and Biosecurity, Institute of Microbiology and Epidemiology, Academy of Military Medical Sciences, Beijing, China
| | - Xian-En Zhang
- National Laboratory of Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China.
| |
Collapse
|
37
|
Zheng LQ, Yu XD, Xu JJ, Chen HY. Rapid visual detection of quaternary ammonium surfactants using citrate-capped silver nanoparticles (Ag NPs) based on hydrophobic effect. Talanta 2014; 118:90-5. [DOI: 10.1016/j.talanta.2013.10.009] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2013] [Revised: 09/29/2013] [Accepted: 10/03/2013] [Indexed: 11/27/2022]
|
38
|
Aptamer-functionalized silver nanoparticles for scanometric detection of platelet-derived growth factor-BB. Anal Chim Acta 2013; 812:152-60. [PMID: 24491776 DOI: 10.1016/j.aca.2013.12.026] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2013] [Revised: 12/09/2013] [Accepted: 12/18/2013] [Indexed: 12/30/2022]
Abstract
In this work, we reported a scanometric assay system based on the aptamer-functionalized silver nanoparticles (apt-AgNPs) for detection of platelet-derived growth factor-BB (PDGF-BB) protein. The aptamer and ssDNA were bound with silver nanoparticles by self-assembly of sulfhydryl group at 5' end to form the apt-AgNPs probe. The apt-AgNPs probe can catalyze the reduction of metallic ions in color agent to generate metal deposition that can be captured both by human eyes and a flatbed scanner. Two different color agents, silver enhancer solution and color agent 1 (10 mM HAuCl4+2 mM hydroquinone) were used to develop silver and gold shell on the surface of AgNPs separately. The results demonstrated that the formation of Ag core-Au shell structure had some advantages especially in the low concentrations. The apt-AgNPs probe coupled with color agent 1 showed remarkable superiority in both sensitivity and detection limit compared to the apt-AuNPs system. The apt-AgNPs system also produced a wider linear range from 1.56 ng mL(-1) to 100 ng mL(-1) for PDGF-BB with the detection limit lower than 1.56 ng mL(-1). The present strategy was applied to the determination of PDGF-BB in 10% serum, and the results showed that it had good specificity in complex biological media.
Collapse
|
39
|
Liu P, Yang X, Sun S, Wang Q, Wang K, Huang J, Liu J, He L. Enzyme-free colorimetric detection of DNA by using gold nanoparticles and hybridization chain reaction amplification. Anal Chem 2013; 85:7689-95. [PMID: 23895103 DOI: 10.1021/ac4001157] [Citation(s) in RCA: 248] [Impact Index Per Article: 22.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
A novel, high sensitive, and specific DNA assay based on gold nanoparticle (AuNP) colorimetric detection and hybridization chain reaction (HCR) amplification has been demonstrated in this article. Two hairpin auxiliary probes were designed with single-stranded DNA (ssDNA) sticky ends which stabilize AuNPs and effectively prevent them from salt-induced aggregation. The target DNA hybridized with the hairpin auxiliary probes and triggered the formation of extended double-stranded DNA (dsDNA) polymers through HCR. As a result, the formed dsDNA polymers provide less stabilization without ssDNA sticky ends, and AuNPs undergo aggregation when salt concentration is increased. Subsequently, a pale purple-to-blue color variation is observed in the colloid solution. The system is simple in design and convenient in operation. The novel strategy eliminates the need for enzymatic reactions, separation processes, chemical modifications, and sophisticated instrumentation. The detection and discrimination process can be seen with the naked eye. The detection limit of this method is lower than or at least comparable to previous AuNP-based methods. Importantly, the protocol offers high selectivity for the determination between perfectly matched target oligonucleotides and targets with single base-pair mismatches.
Collapse
Affiliation(s)
- Pei Liu
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Key Laboratory for Bio-Nanotechnology and Molecular Engineering of Hunan Province, Changsha 410082, China
| | | | | | | | | | | | | | | |
Collapse
|
40
|
Valentini P, Pompa PP. Gold nanoparticles for naked-eye DNA detection: smart designs for sensitive assays. RSC Adv 2013. [DOI: 10.1039/c3ra43729a] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
|