1
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Eling CJ, Bruce N, Gunasekar NK, Alves PU, Edwards PR, Martin RW, Laurand N. Biotinylated Photocleavable Semiconductor Colloidal Quantum Dot Supraparticle Microlaser. ACS APPLIED NANO MATERIALS 2024; 7:9159-9166. [PMID: 38694721 PMCID: PMC11059076 DOI: 10.1021/acsanm.4c00668] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/31/2024] [Revised: 04/04/2024] [Accepted: 04/08/2024] [Indexed: 05/04/2024]
Abstract
Luminescent supraparticles of colloidal semiconductor nanocrystals can act as microscopic lasers and are hugely attractive for biosensing, imaging, and drug delivery. However, biointerfacing these to increase functionality while retaining their main optical properties remains an unresolved challenge. Here, we propose and demonstrate red-emitting, silica-coated CdSxSe1-x/ZnS colloidal quantum dot supraparticles functionalized with a biotinylated photocleavable ligand. The success of each step of the synthesis is confirmed by scanning electron microscopy, energy dispersive X-ray and Fourier transform infrared spectroscopy, ζ-potential, and optical pumping measurements. The capture and release functionality of the supraparticle system is proven by binding to a neutravidin functionalized glass slide and subsequently cleaving off after UV-A irradiation. The biotinylated supraparticles still function as microlasers; e.g., a 9 μm diameter supraparticle has oscillating modes around 625 nm at a threshold of 58 mJ/cm2. This work is a first step toward using supraparticle lasers as enhanced labels for bionano applications.
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Affiliation(s)
- Charlotte J. Eling
- Institute
of Photonics, Department of Physics, SUPA,
University of Strathclyde, Glasgow G1 1RD, U.K.
| | - Natalie Bruce
- Institute
of Photonics, Department of Physics, SUPA,
University of Strathclyde, Glasgow G1 1RD, U.K.
- Fraunhofer
Centre for Applied Photonics, 99 George Street, Glasgow G1 1RD, U.K.
| | - Naresh-Kumar Gunasekar
- Department
of Physics, SUPA, University of Strathclyde, Glasgow G4 0NG, U.K.
- Institute
for Compound Semiconductors, School of Physics and Astronomy, Cardiff University, Cardiff CF24 3AA, U.K.
| | - Pedro Urbano Alves
- Institute
of Photonics, Department of Physics, SUPA,
University of Strathclyde, Glasgow G1 1RD, U.K.
| | - Paul R. Edwards
- Department
of Physics, SUPA, University of Strathclyde, Glasgow G4 0NG, U.K.
| | - Robert W. Martin
- Department
of Physics, SUPA, University of Strathclyde, Glasgow G4 0NG, U.K.
| | - Nicolas Laurand
- Institute
of Photonics, Department of Physics, SUPA,
University of Strathclyde, Glasgow G1 1RD, U.K.
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2
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Lee N, Kim S, Lee KH, Lee SM, Lee DW. Synthesis of fluorescent dye-embedded silica nanoparticles for vitamin D3 detection using sandwich-like assay. KOREAN J CHEM ENG 2022. [DOI: 10.1007/s11814-022-1221-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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3
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Zhang W, Tang S, Jin Y, Yang C, He L, Wang J, Chen Y. Multiplex SERS-based lateral flow immunosensor for the detection of major mycotoxins in maize utilizing dual Raman labels and triple test lines. JOURNAL OF HAZARDOUS MATERIALS 2020; 393:122348. [PMID: 32143157 DOI: 10.1016/j.jhazmat.2020.122348] [Citation(s) in RCA: 87] [Impact Index Per Article: 21.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/21/2020] [Revised: 02/07/2020] [Accepted: 02/17/2020] [Indexed: 05/18/2023]
Abstract
A multiplex surface-enhanced Raman scattering (SERS)-based lateral flow immunosensor was developed to determine six major mycotoxins in maize. Two characteristic Raman reporter molecules-5,5-dithiobis-2-nitrobenzoic acid (DTNB) and 4-mercaptobenzoic acid (MBA)-were used to label the synthesized Au@Ag core-shell nanoparticles for the preparation of SERS nanoprobes as detection reagents. Six corresponding hapten-protein conjugates were prepared and dispensed on three test lines of nitrocellulose membrane with two conjugates on each line as capture antigens. This design facilitates the simultaneous detection of the six mycotoxins in a single test. After optimizing the experimental parameters of immunosensor, the limits of detection were as low as 0.96 pg/mL for aflatoxin B1, 6.2 pg/mL for zearalenone, 0.26 ng/mL for fumonisin B1, 0.11 ng/mL for deoxynivalenol, 15.7 pg/mL for ochratoxin A, and 8.6 pg/mL for T-2 toxin, respectively. The spiking experiment showed high accuracy with recovery of 78.9-106.2 % and satisfactory assay precision with the coefficient of variations below 16 %. Moreover, this assay can be completed in less than 20 min, and its detection results were consistent with that of liquid chromatography-mass spectrometry. Therefore, the developed SERS-based lateral flow immunosensor is a promising approach for mycotoxin detection in the field.
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Affiliation(s)
- Wanjun Zhang
- State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing, 100193, China
| | - Shusheng Tang
- College of Veterinary Medicine, China Agricultural University, Beijing, China
| | - Yongpeng Jin
- State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing, 100193, China
| | - Chunjiang Yang
- Ring Biotechnology Co Ltd, Bodaxing Industry Park, Beijing, 101111, China
| | - Lidong He
- Department of Chemistry and Biochemistry, Florida State University, Tallahassee, FL, 32306, USA
| | - Jiayi Wang
- State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing, 100193, China
| | - Yiqiang Chen
- State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing, 100193, China.
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4
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Lateral flow immunoassay for 5-hydroxyflunixin based on near-infrared fluorescence molecule as an alternative label to gold nanoparticles. Mikrochim Acta 2020; 187:368. [PMID: 32495065 DOI: 10.1007/s00604-020-04338-z] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2020] [Accepted: 05/18/2020] [Indexed: 10/24/2022]
Abstract
A high-affinity monoclonal antibody (mAb) has been prepared and separately a gold nanoparticle (AuNP)-based and a near-infrared (NIR) fluorescence-based lateral flow immunoassay (LFA) developed for determination of 5-hydroxyflunixin residue in raw milk. The AuNP and IRDye® 800CW were used to label anti-5-hydroxyflunixin mAb to form the AuNP-mAb and NIR dye-mAb conjugates, respectively. Quantitative determination of 5-hydroxyflunixin was achieved by imaging the optical or fluorescence intensity of the AuNP-mAb and NIR dye-mAb captured on the test line. As a result, the detection limits of the AuNP-based LFA and NIR dye-based LFA were 0.82 and 0.073 ng/mL in raw milk, respectively. The considerable improvement on assay sensitivity of the NIR-based LFA can be attributed to the lower background and less antibody consumption per test than that of the AuNP-based LFA. The spiking experiment by the NIR-based LFA yielded 85.7-112.6% recovery with a relative standard deviation below 14%, indicating that it has satisfactory assay accuracy and precision. Furthermore, the analytical results of actual samples by the NIR dye-based LFA were consistent with that by instrumental analysis. Therefore, these results demonstrated that the NIR dye is an ideal alternative label to the conventional AuNP for the development of LFA for veterinary drugs in animal-origin food. Graphical abstract.
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5
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Jiang N, Zhu T, Hu Y. Competitive aptasensor with gold nanoparticle dimers and magnetite nanoparticles for SERS-based determination of thrombin. Mikrochim Acta 2019; 186:747. [PMID: 31691866 DOI: 10.1007/s00604-019-3787-9] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2019] [Accepted: 08/27/2019] [Indexed: 12/20/2022]
Abstract
It is known that the intensity of surface-enhanced Raman scattering (SERS) of monomeric gold nanoparticles (GNPs) is insufficient for ultrasensitive analysis. The authors describe dimeric GNPs for use in a competitive SERS and aptamer based assay for thrombin. The reagent 1,2-bis(4-pyridyl) ethylene serves as both the coupling agent and the Raman reporter on the GNP dimers. In the presence of thrombin, the hybridization of two aptamers, one attached to the GNP dimers, the other to magnetic nanoparticles, is competitively prevented. This method takes advantage of the unique "hot spots" of the GNP dimers to amplify the Raman signal. This results in an ultra-sensitive thrombin assay when compared to assays using GNP monomers. The limit of detection is as low as 1 fM of thrombin. The Raman intensity, best measured at 1612 cm-1, increases linearly in the 1 fM to 10 nM thrombin concentration range. The method was applied to the determinaiton of thrombin in spiked simulated body fluid and human serum. Graphical abstract This method takes advantage of the unique "hot spots" of the gold nanoparticle dimers to amplify the Raman signal. The dimers are linked to the magnetic nanoparticles via an aptamer. The use of both competitive displacement and magnetic separation greatly improves the sensitivity of the thrombin assay.
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Affiliation(s)
- Ningjing Jiang
- MOE Key Laboratory of Laser Life Science & Institute of Laser Life Science, Guangzhou Key Laboratory of spectral analysis and functional probes, College of Biophotonics, South China Normal University, Guangzhou, 510631, People's Republic of China
| | - Tingfeng Zhu
- MOE Key Laboratory of Laser Life Science & Institute of Laser Life Science, Guangzhou Key Laboratory of spectral analysis and functional probes, College of Biophotonics, South China Normal University, Guangzhou, 510631, People's Republic of China
| | - Yongjun Hu
- MOE Key Laboratory of Laser Life Science & Institute of Laser Life Science, Guangzhou Key Laboratory of spectral analysis and functional probes, College of Biophotonics, South China Normal University, Guangzhou, 510631, People's Republic of China.
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6
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Lim CY, Granger JH, Porter MD. SERS detection of Clostridium botulinum neurotoxin serotypes A and B in buffer and serum: Towards the development of a biodefense test platform. Anal Chim Acta X 2018; 1:100002. [PMID: 33186413 PMCID: PMC7587037 DOI: 10.1016/j.acax.2018.100002] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2018] [Accepted: 12/10/2018] [Indexed: 01/30/2023] Open
Abstract
Botulinum neurotoxins (BoNTs) are classified at a highest degree of threat in biodefense, due largely to their high lethality. With the growing risk of biowarfare, the shortcomings of the gold standard test for these neurotoxins, the mouse bioassay, have underscored the need to develop alternative diagnostic testing strategies. This paper reports on the detection of inactivated Clostridium botulinum neurotoxin serotype A (BoNT-A) and serotype B (BoNT-B), the two most important markers of botulism infection, by using a sandwich immunoassay, gold nanoparticle labels, and surface-enhanced Raman scattering (SERS) within the context of two threat scenarios. The first scenario mimics part of the analysis needed in response to a “white powder” threat by measuring both neurotoxins in phosphate-buffered saline (PBS), a biocompatible solvent often used to recover markers dispersed in a powdered matrix. The second scenario detects the two neurotoxins in spiked human serum to assess the clinical potential of the platform. The overall goal is to develop a test applicable to both scenarios in terms of projections of required levels of detection. We demonstrate the ability to measure BoNT-A and BoNT-B in PBS at a limit of detection (LoD) of 700 pg/mL (5 pM) and 84 pg/mL (0.6 pM), respectively, and in human serum at 1200 pg/mL (8 pM) and 91 pg/mL (0.6 pM), respectively, with a time to result under 24 h. The steps required to transform this platform into an onsite biodefense screening tool that can simultaneously and rapidly detect (<1 h) these and other agents are briefly discussed. Raman-based immunoassays can successfully detect botulism neurotoxins. Limits of detection for botulism neurotoxins A/B rival those of the mouse bioassay. Serum and liquid extracts are suitable sample matrices for the Raman assay.
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Affiliation(s)
- China Y Lim
- Department of Chemical Engineering, University of Utah, Salt Lake City, UT, 84112-5001, USA
| | - Jennifer H Granger
- Nano Institute of Utah, University of Utah, Salt Lake City, UT, 84112-5001, USA
| | - Marc D Porter
- Department of Chemical Engineering, University of Utah, Salt Lake City, UT, 84112-5001, USA.,Nano Institute of Utah, University of Utah, Salt Lake City, UT, 84112-5001, USA.,Department of Chemistry, University of Utah, Salt Lake City, UT, 84112-5001, USA
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7
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Shi Q, Huang J, Sun Y, Yin M, Hu M, Hu X, Zhang Z, Zhang G. Utilization of a lateral flow colloidal gold immunoassay strip based on surface-enhanced Raman spectroscopy for ultrasensitive detection of antibiotics in milk. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2018; 197:107-113. [PMID: 29195715 DOI: 10.1016/j.saa.2017.11.045] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/05/2017] [Revised: 10/23/2017] [Accepted: 11/20/2017] [Indexed: 06/07/2023]
Abstract
An ultrasensitive method for the detection of antibiotics in milk is developed based on inexpensive, simple, rapid and portable lateral flow immunoassay (LFI) strip, in combination with high sensitivity surface-enhanced Raman spectroscopy (SERS). In our strategy, an immunoprobe was prepared from colloidal gold (AuNPs) conjugated with both a monoclonal antibody against neomycin (NEO-mAb) and a Raman probe molecule 4-aminothiophenol (PATP). The competitive interaction with immunoprobe between free NEO and the coated antigen (NEO-OVA) resulted in the change of the amount of the immobilized immunoprobe on the paper substrate. The LFI procedure was completed within 15min. The Raman intensity of PATP on the test line of the LFI strip was measured for the quantitative determination of NEO. The IC50 and the limit of detection (LOD) of this assay are 0.04ng/mL and 0.216pg/mL of NEO, respectively. There is no cross-reactivity (CR) of the assay with other compounds, showing high specificity of the assay. The recoveries for milk samples with added NEO are in the range of 89.7%-105.6% with the relative standard deviations (RSD) of 2.4%-5.3% (n=3). The result reveals that this method possesses high specificity, sensitivity, reproducibility and stability, and can be used to detect a variety of antibiotic residues in milk samples.
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Affiliation(s)
- Qiaoqiao Shi
- School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, China; CAS Key Laboratory of Nano-Bio Interface, Division of Nanobiomedicine, CAS Center for Excellence in Nanoscience, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou 215123, China; Key Laboratory for Animal Immunology of the Ministry of Agriculture, Henan Academy of Agricultural Sciences, Zhengzhou 450002, China
| | - Jie Huang
- CAS Key Laboratory of Nano-Bio Interface, Division of Nanobiomedicine, CAS Center for Excellence in Nanoscience, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou 215123, China
| | - Yaning Sun
- Key Laboratory for Animal Immunology of the Ministry of Agriculture, Henan Academy of Agricultural Sciences, Zhengzhou 450002, China
| | - Mengqi Yin
- Key Laboratory for Animal Immunology of the Ministry of Agriculture, Henan Academy of Agricultural Sciences, Zhengzhou 450002, China
| | - Mei Hu
- Key Laboratory for Animal Immunology of the Ministry of Agriculture, Henan Academy of Agricultural Sciences, Zhengzhou 450002, China
| | - Xiaofei Hu
- Key Laboratory for Animal Immunology of the Ministry of Agriculture, Henan Academy of Agricultural Sciences, Zhengzhou 450002, China.
| | - Zhijun Zhang
- CAS Key Laboratory of Nano-Bio Interface, Division of Nanobiomedicine, CAS Center for Excellence in Nanoscience, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou 215123, China.
| | - Gaiping Zhang
- School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, China; College of Animal Science and Veterinary Medicine, Henan Agricultural University, Zhengzhou 450002, China.
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8
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A novel SERS nanoprobe based on the use of core-shell nanoparticles with embedded reporter molecule to detect E. coli O157:H7 with high sensitivity. Mikrochim Acta 2017; 185:30. [DOI: 10.1007/s00604-017-2573-9] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2017] [Accepted: 11/09/2017] [Indexed: 12/20/2022]
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9
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Yang K, Hu Y, Dong N, Zhu G, Zhu T, Jiang N. A novel SERS-based magnetic aptasensor for prostate specific antigen assay with high sensitivity. Biosens Bioelectron 2017; 94:286-291. [PMID: 28292735 DOI: 10.1016/j.bios.2017.02.048] [Citation(s) in RCA: 74] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2016] [Revised: 02/07/2017] [Accepted: 02/28/2017] [Indexed: 12/21/2022]
Abstract
The accurate and highly sensitive detection of prostate specific antigen (PSA) is particularly important, especially for obese men and patients. In this report, we present a novel aptamer-based surface-enhanced Raman scattering (SERS) sensor that employs magnetic nanoparticles (MNPs) core-Au nanoparticles (AuNPs) satellite assemblies to detect PSA. The high specific biorecognition between aptamer and PSA caused the dissolution of the core-satellite assemblies, thus the concentration of functionalized AuNPs (signal probes) existing in the supernatant was on the rise with the continual addition of PSA. The aptamer-modified MNPs were used as supporting materials and separation tools in the present sensor. With the assistance of magnet, the mixture was removed from the supernatant for the concentration effects. It was found that the corresponding SERS signals from the supernatant were in direct correlation to PSA concentrations over a wide range and the limit of detection (LOD) was as low as 5.0pg/mL. Excellent recovery was also obtained to assess the feasibility of this method for human serum samples detection. All of these results show a promising application of this method. And this novel sensor can be used for the accurate and highly sensitive detection of PSA in clinic samples in the future.
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Affiliation(s)
- Kang Yang
- MOE Key Laboratory of Laser Life Science & Institute of Laser Life Science, College of Biophotonics, South China Normal University, Guangzhou 510631, China
| | - Yongjun Hu
- MOE Key Laboratory of Laser Life Science & Institute of Laser Life Science, College of Biophotonics, South China Normal University, Guangzhou 510631, China.
| | - Ning Dong
- MOE Key Laboratory of Laser Life Science & Institute of Laser Life Science, College of Biophotonics, South China Normal University, Guangzhou 510631, China
| | - Guichi Zhu
- Laboratory of Biosensors & Nanomachines, Département de Chimie, Université de Montréal, Québec, Canada
| | - Tingfeng Zhu
- MOE Key Laboratory of Laser Life Science & Institute of Laser Life Science, College of Biophotonics, South China Normal University, Guangzhou 510631, China
| | - Ningjing Jiang
- MOE Key Laboratory of Laser Life Science & Institute of Laser Life Science, College of Biophotonics, South China Normal University, Guangzhou 510631, China
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10
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Yu M, Hu Y, Liu J. Simultaneous detection of clenbuterol and ractopamine based on multiplexed competitive surface enhanced Raman scattering (SERS) immunoassay. NEW J CHEM 2017. [DOI: 10.1039/c7nj01394a] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In this work, we demonstrate a competitive surface-enhanced Raman scattering (SERS) immunoassay for multiplexed detection of clenbuterol and ractopamine.
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Affiliation(s)
- Meng Yu
- Ministry of Education Key Laboratory of Laser Life Science & Institute of Laser Life Science
- College of Biophotonics
- South China Normal University
- Guangzhou 510631
- People's Republic of China
| | - Yongjun Hu
- Ministry of Education Key Laboratory of Laser Life Science & Institute of Laser Life Science
- College of Biophotonics
- South China Normal University
- Guangzhou 510631
- People's Republic of China
| | - Jianzhi Liu
- School of Life Sciences
- Sun Yat-sen University
- Guangzhou 510275
- People's Republic of China
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11
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Crawford AC, Skuratovsky A, Porter MD. Sampling Error: Impact on the Quantitative Analysis of Nanoparticle-Based Surface-Enhanced Raman Scattering Immunoassays. Anal Chem 2016; 88:6515-22. [DOI: 10.1021/acs.analchem.6b01263] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Alexis C. Crawford
- Department of Chemistry, ‡The Nano Institute of Utah, and §Department of
Chemical Engineering, University of Utah, Salt Lake City, Utah 84112, United States
| | - Aleksander Skuratovsky
- Department of Chemistry, ‡The Nano Institute of Utah, and §Department of
Chemical Engineering, University of Utah, Salt Lake City, Utah 84112, United States
| | - Marc D. Porter
- Department of Chemistry, ‡The Nano Institute of Utah, and §Department of
Chemical Engineering, University of Utah, Salt Lake City, Utah 84112, United States
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12
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Yang K, Hu Y, Dong N. A novel biosensor based on competitive SERS immunoassay and magnetic separation for accurate and sensitive detection of chloramphenicol. Biosens Bioelectron 2016; 80:373-377. [DOI: 10.1016/j.bios.2016.01.064] [Citation(s) in RCA: 81] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2015] [Revised: 01/25/2016] [Accepted: 01/27/2016] [Indexed: 01/08/2023]
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13
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Granger JH, Schlotter NE, Crawford AC, Porter MD. Prospects for point-of-care pathogen diagnostics using surface-enhanced Raman scattering (SERS). Chem Soc Rev 2016; 45:3865-82. [DOI: 10.1039/c5cs00828j] [Citation(s) in RCA: 166] [Impact Index Per Article: 20.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
This review highlights recent advances in the application of surface-enhanced Raman scattering (SERS) in pathogen detection and discusses many of the challenges in moving this technology to the point-of-care (POC) arena.
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Affiliation(s)
| | | | | | - Marc D. Porter
- Nano Institute of Utah
- University of Utah
- Salt Lake City
- USA
- Department of Chemistry
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Lim C, Owens NA, Wampler RD, Ying Y, Granger J, Porter MD. Succinimidyl ester surface chemistry: implications of the competition between aminolysis and hydrolysis on covalent protein immobilization. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2014; 30:12868-78. [PMID: 25317495 PMCID: PMC4222659 DOI: 10.1021/la503439g] [Citation(s) in RCA: 84] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
N-Hydroxysuccinimide (NHS) ester terminal groups are commonly used to covalently couple amine-containing biomolecules (e.g., proteins and peptides) to surfaces via amide linkages. This one-step aminolysis is often performed in buffered aqueous solutions near physiological pH (pH 6 to pH 9). Under these conditions, the hydrolysis of the ester group competes with the amidization process, potentially degrading the efficiency of the coupling chemistry. The work herein examines the efficiency of covalent protein immobilization in borate buffer (50 mM, pH 8.50) using the thiolate monolayer formed by the chemisorption of dithiobis (succinimidyl propionate) (DSP) on gold films. The structure and reactivity of these adlayers are assessed via infrared spectroscopy (IR), X-ray photoelectron spectroscopy (XPS), electrochemical reductive desorption, and contact angle measurements. The hydrolysis of the DSP-based monolayer is proposed to follow a reaction mechanism with an initial nucleation step, in contrast to a simple pseudo first-order reaction rate law for the entire reaction, indicating a strong dependence of the interfacial reaction on the packing and presence of defects in the adlayer. This interpretation is used in the subsequent analysis of IR-ERS kinetic plots which give a heterogeneous aminolysis rate constant, ka, that is over 3 orders of magnitude lower than that of the heterogeneous hydrolysis rate constant, kh. More importantly, a projection of these heterogeneous kinetic rates to protein immobilization suggests that under coupling conditions in which low protein concentrations and buffers of near physiological pH are used, proteins are more likely physically adsorbed rather than covalently linked. This result is paramount for biosensors that use NHS chemistry for protein immobilization due to effects that may arise from noncovalently linked proteins.
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Affiliation(s)
- China
Y. Lim
- Departments of Chemical Engineering, Chemistry, Bioengineering, and Pathology and the Nano Institute of Utah, University of Utah, Salt Lake City, Utah 84112, United States
| | - Nicholas A. Owens
- Departments of Chemical Engineering, Chemistry, Bioengineering, and Pathology and the Nano Institute of Utah, University of Utah, Salt Lake City, Utah 84112, United States
| | - Ronald D. Wampler
- Departments of Chemical Engineering, Chemistry, Bioengineering, and Pathology and the Nano Institute of Utah, University of Utah, Salt Lake City, Utah 84112, United States
| | - Yixin Ying
- Departments of Chemical Engineering, Chemistry, Bioengineering, and Pathology and the Nano Institute of Utah, University of Utah, Salt Lake City, Utah 84112, United States
| | - Jennifer
H. Granger
- Departments of Chemical Engineering, Chemistry, Bioengineering, and Pathology and the Nano Institute of Utah, University of Utah, Salt Lake City, Utah 84112, United States
| | - Marc D. Porter
- Departments of Chemical Engineering, Chemistry, Bioengineering, and Pathology and the Nano Institute of Utah, University of Utah, Salt Lake City, Utah 84112, United States
- E-mail:
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15
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Liu J, Hu Y, Zhu G, Zhou X, Jia L, Zhang T. Highly sensitive detection of zearalenone in feed samples using competitive surface-enhanced Raman scattering immunoassay. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2014; 62:8325-8332. [PMID: 25052032 DOI: 10.1021/jf503191e] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Accurate and quantitative analysis of mycotoxin (such as zearalenone) is particularly imperative in the field of food safety and animal husbandry. Here, we develop a sensitive and specific method for zearalenone detection using competitive surface-enhanced Raman scattering (SERS) immunoassay. In this assay, a functional gold nanoparticle was labeled with the Raman reporter and the zearalenone antibody, and a modified substrate was assembled with the zearalenone-bovine serum albumin. With the addition of free zearalenone, the competitive immune reaction between free zearalenone and zearalenone-bovine serum albumin was initiated for binding with zearalenone antibody labeled on gold nanoparticle, resulting in the change of SERS signal intensity. The proposed method exhibits high sensitivity with a detection limit of 1 pg/mL and a wide dynamic range from 1 to 1000 pg/mL. Furthermore, this method can be further applied to analyze the multiple natural feed samples contaminated with zearalenone, holding great potential for real sample detection.
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Affiliation(s)
- Jianzhi Liu
- Ministry of Education Key Laboratory of Laser Life Science & Institute of Laser Life Science, College of Biophotonics, South China Normal University , Guangzhou 510631, People's Republic of China
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Abstract
The occurrence of vitamin D deficiency has become an issue of serious concern in the worldwide population. As a result numerous analytical methods have been developed, for a variety of matrices, during the last few years to measure vitamin D analogs and metabolites. This review employs a comprehensive search of all vitamin D methods developed during the last 5 years for all applications, using ISI Web of Science(®), Scifinder(®), Science Direct, Scopus and PubMed. Particular emphasis is given to sample-preparation methods and the different forms of vitamin D measured across different fields of applications such as biological fluids, food and pharmaceutical preparations. This review compares and critically evaluates a wide range of approaches and methods, and hence it will enable readers to access developments across a number of applications and to select or develop the optimal analytical method for vitamin D for their particular application.
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Song C, Chen J, Zhao Y, Wang L. Gold-modified silver nanorod arrays for SERS-based immunoassays with improved sensitivity. J Mater Chem B 2014; 2:7488-7494. [DOI: 10.1039/c4tb01207k] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Silver nanorod arrays and Au-modified AgNR arrays are fabricated for SERS immunoassays with improved sensitivity.
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Affiliation(s)
- Chunyuan Song
- Key Lab for Organic Electronics & Information Displays (KLOEID)
- Institute of Advanced Materials (IAM)
- Synergetic Innovation Center for Organic Electronics and Information Displays
- Nanjing University of Posts & Telecommunications
- Nanjing 210023, China
| | - Jing Chen
- Nanoscale Science and Engineering Center
- University of Georgia
- Athens, USA
- Department of Food Science and Technology
- University of Georgia
| | - Yiping Zhao
- Department of Physics and Astronomy
- University of Georgia
- Athens, USA
- Nanoscale Science and Engineering Center
- University of Georgia
| | - Lianhui Wang
- Key Lab for Organic Electronics & Information Displays (KLOEID)
- Institute of Advanced Materials (IAM)
- Synergetic Innovation Center for Organic Electronics and Information Displays
- Nanjing University of Posts & Telecommunications
- Nanjing 210023, China
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Dreaden EC, Alkilany AM, Huang X, Murphy CJ, El-Sayed MA. The golden age: gold nanoparticles for biomedicine. Chem Soc Rev 2012; 41:2740-79. [PMID: 22109657 PMCID: PMC5876014 DOI: 10.1039/c1cs15237h] [Citation(s) in RCA: 2001] [Impact Index Per Article: 166.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Gold nanoparticles have been used in biomedical applications since their first colloidal syntheses more than three centuries ago. However, over the past two decades, their beautiful colors and unique electronic properties have also attracted tremendous attention due to their historical applications in art and ancient medicine and current applications in enhanced optoelectronics and photovoltaics. In spite of their modest alchemical beginnings, gold nanoparticles exhibit physical properties that are truly different from both small molecules and bulk materials, as well as from other nanoscale particles. Their unique combination of properties is just beginning to be fully realized in range of medical diagnostic and therapeutic applications. This critical review will provide insights into the design, synthesis, functionalization, and applications of these artificial molecules in biomedicine and discuss their tailored interactions with biological systems to achieve improved patient health. Further, we provide a survey of the rapidly expanding body of literature on this topic and argue that gold nanotechnology-enabled biomedicine is not simply an act of 'gilding the (nanomedicinal) lily', but that a new 'Golden Age' of biomedical nanotechnology is truly upon us. Moving forward, the most challenging nanoscience ahead of us will be to find new chemical and physical methods of functionalizing gold nanoparticles with compounds that can promote efficient binding, clearance, and biocompatibility and to assess their safety to other biological systems and their long-term term effects on human health and reproduction (472 references).
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Affiliation(s)
- Erik C. Dreaden
- Laser Dynamics Laboratory, Department of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, GA 30332-0400, USA
| | - Alaaldin M. Alkilany
- Department of Pharmacology and Toxicology, Georgia Health Sciences University, 1459 Laney Walker Blvd., Augusta, GA 30912, USA
| | - Xiaohua Huang
- Department of Chemistry, University of Memphis, 213 Smith Chemistry Bldg, Memphis, TN 38152-3550, USA
| | - Catherine J. Murphy
- Department of Chemistry, University of Illinois at Urbana-Champaign, 600 South Mathews Avenue, Urbana, IL 61801, USA. E-mail: ; Fax: +1 217 244 3186; Tel: +1 217 333 7680
| | - Mostafa A. El-Sayed
- Laser Dynamics Laboratory, Department of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, GA 30332-0400, USA
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19
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Pelaz B, del Pino P. Synthesis Applications of Gold Nanoparticles. ACTA ACUST UNITED AC 2012. [DOI: 10.1016/b978-0-12-415769-9.00001-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/22/2023]
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20
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Cheng HW, Huan SY, Yu RQ. Nanoparticle-based substrates for surface-enhanced Raman scattering detection of bacterial spores. Analyst 2012; 137:3601-8. [DOI: 10.1039/c2an35448a] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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21
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Kho KW, Fu CY, Dinish US, Olivo M. Clinical SERS: are we there yet? JOURNAL OF BIOPHOTONICS 2011; 4:667-684. [PMID: 21922673 DOI: 10.1002/jbio.201100047] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/31/2011] [Revised: 08/06/2011] [Accepted: 08/30/2011] [Indexed: 05/31/2023]
Abstract
Surface Enhanced Raman Spectroscopy or SERS has witnessed many successes over the past 3 decades, owing particularly to its simplicity of use as well as its highly-multiplexing capability. This article provides an overview of SERS and its applicability in the field of bio-medicine. We will preview recent developments in SERS substrate designs, and the various sensing technologies that are based on the SERS phenomenon. An overview of the clinical applications of SERS is also included. Finally, we provide an opinion on the future trends of this unique spectroscopic technique.
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Affiliation(s)
- Kiang Wei Kho
- Bio-photonics Group, School of Physics, National University of Ireland, Galway, Ireland; National Cancer Centre Singapore, 11 Hospital Drive, Singapore 169610, Singapore
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22
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Zhu G, Hu Y, Gao J, Zhong L. Highly sensitive detection of clenbuterol using competitive surface-enhanced Raman scattering immunoassay. Anal Chim Acta 2011; 697:61-6. [PMID: 21641419 DOI: 10.1016/j.aca.2011.04.031] [Citation(s) in RCA: 80] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2010] [Revised: 04/13/2011] [Accepted: 04/15/2011] [Indexed: 10/18/2022]
Abstract
In this report, we present a novel approach to detect clenbuterol based on competitive surface-enhanced Raman scattering (SERS) immunoassay. Herein, a SERS nanoprobe that relies on gold nanoparticle (GNP) is labeled by 4,4'-dipyridyl (DP) and clenbuterol antibody, respectively. The detection of clenbuterol is carried out by competitive binding between free clenbuterol and clenbuterol-BSA fastened on the substrate with their antibody labeled on SERS nanoprobes. The present method allows us to detect clenbuterol over a much wider concentration range (0.1-100 pg mL(-1)) with a lower limit of detection (ca. 0.1 pg mL(-1)) than the conventional methods. Furthermore, by the use of this new competitive SERS immunoassay, the clenbuterol-BSA (antigen) is chosen to fasten on the substrate instead of the clenbuterol antibody, which could reduce the cost of the assay. Results demonstrate that the proposed method has the wide potential applications in food safety and agonist control.
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Affiliation(s)
- Guichi Zhu
- MOE Key Laboratory of Laser Life Science & Institute of Laser Life Science, College of Biophotonics, South China Normal University, Guangzhou, China
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23
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Wang G, Lipert RJ, Jain M, Kaur S, Chakraboty S, Torres MP, Batra SK, Brand RE, Porter MD. Detection of the potential pancreatic cancer marker MUC4 in serum using surface-enhanced Raman scattering. Anal Chem 2011; 83:2554-61. [PMID: 21391573 DOI: 10.1021/ac102829b] [Citation(s) in RCA: 151] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Pancreatic cancer (PC) is one of the most lethal malignancies. It has a 5-year survival rate of only 6%, owing in part to the lack of a reliable tumor marker for early diagnosis. Recent research has shown that the mucin protein MUC4 is aberrantly expressed in pancreatic adenocarcinoma cell lines and tissues but is undetectable in normal pancreas and chronic pancreatitis. Thus, the level of MUC4 in patient sera has the potential to function as a diagnostic and prognostic marker for PC. However, the measurement of MUC4 in sera using conventional test platforms (e.g., enzyme linked immunosorbent assay (ELISA) and radioimmunoassay (RIA)) has been unsuccessful. This has prevented the assessment of the utility of this protein as a possible PC marker in sera. In addressing this obstacle, the work herein examines the potential to create a simple diagnostic test for MUC4 through the development of a surface-enhanced Raman scattering (SERS)-based immunoassay, which was then used to demonstrate the first ever detection of MUC4 in cancer patient serum samples. Importantly, these measurements showed that sera from patients with PC produced a significantly higher SERS response for MUC4 compared to sera from healthy individuals and from patients with benign diseases. These results indicate that a SERS-based immunoassay can monitor MUC4 levels in patient sera, representing a much needed first step toward assessing the potential of this protein to serve as a serum marker for the early stage diagnosis of PC. This paper details these and other findings (i.e., the detection of the mucin protein CA19-9), which demonstrate that our SERS assay outperforms conventional assays (i.e., RIA and ELISA) with respect to limits of detection, readout time, and required sample volume.
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24
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Larmour IA, Graham D. Surface enhanced optical spectroscopies for bioanalysis. Analyst 2011; 136:3831-53. [DOI: 10.1039/c1an15452d] [Citation(s) in RCA: 88] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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