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Zhang X, Gan T, Xu Z, Zhang H, Wang D, Zhao X, Huang Y, Liu Q, Fu B, Dai Z, Li P, Xu W. Immune-like sandwich multiple hotspots SERS biosensor for ultrasensitive detection of NDKA biomarker in serum. Talanta 2024; 271:125630. [PMID: 38237280 DOI: 10.1016/j.talanta.2024.125630] [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: 10/30/2023] [Revised: 01/02/2024] [Accepted: 01/04/2024] [Indexed: 02/24/2024]
Abstract
Developing the rapid, specific, and sensitive tumor marker NDKA biosensor has become an urgent need in the field of early diagnosis of colorectal cancer (CRC). Surface-enhanced Raman spectroscopy (SERS) with the advantages of high sensitivity, high resolution as well as providing sample fingerprint, enables rapid and sensitive detection of tumor markers. However, many SERS biosensors rely on boosting the quantity of Raman reporter molecules on individual nanoparticle surfaces, which can result in nanoparticle agglomeration, diminishing the stability and sensitivity of NDKA detection. Here, we proposed an immune-like sandwich multiple hotspots SERS biosensor for highly sensitive and stable analysis of NDKA in serum based on molecularly imprinted polymers and NDKA antibody. The SERS biosensor employs an array of gold nanoparticles, which are coated with a biocompatible polydopamine molecularly imprinted polymer as a substrate to specifically capture NDKA. Then the biosensor detects NDKA through Raman signals as a result of the specific binding of NDKA to the SERS nanotag affixed to the capture substrate along with the formation of multiple hotspots. This SERS biosensor not only avoids the aggregation of nanoparticles but also presents a solution to the obstacles encountered in immune strategies for certain proteins lacking multiple antibody or aptamer binding sites. Furthermore, the practical application of the SERS biosensor is validated by the detection of NDKA in serum with the lower limit of detection (LOD) of 0.25 pg/mL, meanwhile can detect NDKA of 10 ng/mL in mixed proteins solution, illustrating high sensitivity and specificity. This immune-like sandwich multiple hotspots biosensor makes it quite useful for the early detection of CRC and also provides new ideas for cancer biomarker sensing strategy in the future.
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Affiliation(s)
- Xiang Zhang
- Department of Geriatrics, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, Anhui, 230001, China
| | - Tian Gan
- Department of Geriatrics, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, Anhui, 230001, China
| | - Ziming Xu
- Department of Ophthalmology, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, Anhui, 230001, China
| | - Hanyuan Zhang
- Department of Orthopedics, The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, 230032, China
| | - Dan Wang
- Department of Geriatrics, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, Anhui, 230001, China
| | - Xinxin Zhao
- Department of Geriatrics, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, Anhui, 230001, China
| | - Ying Huang
- Department of Pharmacy, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, Anhui, 230001, China
| | - Qunshan Liu
- Department of Geriatrics, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, Anhui, 230001, China
| | - Bangguo Fu
- Department of Geriatrics, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, Anhui, 230001, China
| | - Zuyun Dai
- Anhui Jianghuai Horticulture Seeds Co., Ltd., Hefei, 230031, Anhui, China.
| | - Pan Li
- Institute of Health and Medical Technology, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, Anhui, 230031, China.
| | - Weiping Xu
- Department of Geriatrics, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, Anhui, 230001, China; Anhui Provincial Key Laboratory of Tumor Immunotherapy and Nutrition Therapy, Anhui, Hefei, 230001, China.
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2
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Lu Y, Lei B, Zhao Q, Yang X, Wei Y, Xiao T, Zhu S, Ouyang Y, Zhang H, Cai W. Solid-State Au Nanocone Arrays Substrate for Reliable SERS Profiling of Serum for Disease Diagnosis. ACS OMEGA 2023; 8:29836-29846. [PMID: 37599935 PMCID: PMC10433333 DOI: 10.1021/acsomega.3c04910] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/09/2023] [Accepted: 07/25/2023] [Indexed: 08/22/2023]
Abstract
Surface-enhanced Raman scattering (SERS) is a widely used rapid and noninvasive method for detecting biological substances in serum samples and is commonly employed in disease screening and diagnosis. Solid-state nanoarray SERS substrates used in serum detection may cause spectral instability due to imperfections in the detection method. For the purpose of identifying optimal detection conditions, various dilution levels of the serum were tested in this study. The study found that a complete and stable serum SERS spectrum can be obtained when the serum is diluted by a factor of 50. The study reports the successful preparation of an Au nanocone array (Au NCA) plasmonic substrate with a uniform, controllable microstructure and high activity, achieved through a combination of PS colloidal sphere template-assisted reactive ion etching (RIE) process and magnetron sputtering deposition technology. Based on this substrate, a standard detection scheme was developed to obtain highly stable and repeatable serum SERS spectra. The study verified the reliability of the optimized serum detection scheme by comparing the SERS spectra of serum samples from healthy individuals and gastric cancer patients, and confirmed the potential benefits of the scheme for disease screening and diagnosis.
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Affiliation(s)
- Yanyan Lu
- Key
Lab of Materials Physics, Anhui Key Lab of Nanomaterials and Nanotechnology,
Institute of Solid State Physics, HFIPS,
Chinese Academy of Sciences, Hefei 230031, P. R. China
- University
of Science and Technology of China, Hefei 230026, P. R. China
| | - Biao Lei
- Key
Lab of Materials Physics, Anhui Key Lab of Nanomaterials and Nanotechnology,
Institute of Solid State Physics, HFIPS,
Chinese Academy of Sciences, Hefei 230031, P. R. China
- University
of Science and Technology of China, Hefei 230026, P. R. China
| | - Qian Zhao
- Key
Lab of Materials Physics, Anhui Key Lab of Nanomaterials and Nanotechnology,
Institute of Solid State Physics, HFIPS,
Chinese Academy of Sciences, Hefei 230031, P. R. China
| | - Xiaowei Yang
- Key
Lab of Materials Physics, Anhui Key Lab of Nanomaterials and Nanotechnology,
Institute of Solid State Physics, HFIPS,
Chinese Academy of Sciences, Hefei 230031, P. R. China
- University
of Science and Technology of China, Hefei 230026, P. R. China
| | - Yi Wei
- Key
Lab of Materials Physics, Anhui Key Lab of Nanomaterials and Nanotechnology,
Institute of Solid State Physics, HFIPS,
Chinese Academy of Sciences, Hefei 230031, P. R. China
| | - Tingting Xiao
- Key
Lab of Materials Physics, Anhui Key Lab of Nanomaterials and Nanotechnology,
Institute of Solid State Physics, HFIPS,
Chinese Academy of Sciences, Hefei 230031, P. R. China
| | - Shuyi Zhu
- Key
Lab of Materials Physics, Anhui Key Lab of Nanomaterials and Nanotechnology,
Institute of Solid State Physics, HFIPS,
Chinese Academy of Sciences, Hefei 230031, P. R. China
- University
of Science and Technology of China, Hefei 230026, P. R. China
| | - Yu Ouyang
- Department
of Clinical Laboratory, The Affiliated Taizhou
Second People’s Hospital of Yangzhou University, Taizhou 225300, P. R. China
| | - Hongwen Zhang
- Key
Lab of Materials Physics, Anhui Key Lab of Nanomaterials and Nanotechnology,
Institute of Solid State Physics, HFIPS,
Chinese Academy of Sciences, Hefei 230031, P. R. China
- Lu’an
Branch, Anhui Institute of Innovation for
Industrial Technology, Lu’an 237100, P. R. China
| | - Weiping Cai
- Key
Lab of Materials Physics, Anhui Key Lab of Nanomaterials and Nanotechnology,
Institute of Solid State Physics, HFIPS,
Chinese Academy of Sciences, Hefei 230031, P. R. China
- University
of Science and Technology of China, Hefei 230026, P. R. China
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3
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Controlled nano-agglomerates as stabile SERS reporters for unequivocal labelling. Sci Rep 2022; 12:8977. [PMID: 35643864 PMCID: PMC9142785 DOI: 10.1038/s41598-022-12989-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2021] [Accepted: 05/19/2022] [Indexed: 11/08/2022] Open
Abstract
Biosensors, especially those with a SERS readout, are required for an early and precise healthcare diagnosis. Unreproducible SERS platforms hamper clinical SERS. Here we report a synthetic procedure to obtain stabile, reproducible and robust highly-SERS performing nanocomposites for labelling. We controlled the NPs agglomeration and codification which resulted in an increased number of hot spots, thus exhibiting reproducible and superior Raman enhancement. We studied fundamental aspects affecting the plasmonic thiol bond resulting in pH exhibiting a determining role. We validated their biosensing performance by designing a SERS-based detection assay model for SARS-CoV-2. The limit of detection of our assay detecting the spike RBD was below 10 ng/mL.
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4
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Zhu W, Hutchison JA, Dong M, Li M. Frequency Shift Surface-Enhanced Raman Spectroscopy Sensing: An Ultrasensitive Multiplex Assay for Biomarkers in Human Health. ACS Sens 2021; 6:1704-1716. [PMID: 33939402 DOI: 10.1021/acssensors.1c00393] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
The sensitive and selective detection of biomarkers for human health remains one of the grand challenges of the analytical sciences. Compared to established methods (colorimetric, (chemi) luminescent), surface-enhanced Raman spectroscopy (SERS) is an emerging alternative with enormous potential for ultrasensitive biological detection. Indeed even attomolar (10-18 M) detection limits are possible for SERS due to an orders-of-magnitude boosting of Raman signals at the surface of metallic nanostructures by surface plasmons. However, challenges remain for SERS assays of large biomolecules, as the largest enhancements require the biomarker to enter a "hot spot" nanogap between metal nanostructures. The frequency-shift SERS method has gained popularity in recent years as an alternative assay that overcomes this drawback. It measures frequency shifts in intense SERS peaks of a Raman reporter during binding events on biomolecules (protein coupling, DNA hybridization, etc.) driven by mechanical transduction, charge transfer, or local electric field effects. As such, it retains the excellent multiplexing capability of SERS, with multiple analytes being identifiable by a spectral fingerprint in a single read-out. Meanwhile, like refractive index surface plasmon resonance methods, frequency-shift SERS measures the shift of an intense signal rather than resolving a peak above noise, easing spectroscopic resolution requirements. SERS frequency-shift assays have proved particularly suitable for sensing large, highly charged biomolecules that alter hydrogen-bonding networks upon specific binding. Herein we discuss the frequency-shift SERS method and promising applications in (multiplex) biomarker sensing as well as extensions to ion and gas sensing and much more.
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Affiliation(s)
- Wenfeng Zhu
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, Institute of High Energy Physics, the Chinese Academy of Sciences, Beijing 100049, China
- Department of Biochemistry and Molecular Biology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100005, China
| | - James Andell Hutchison
- School of Chemistry, University of Melbourne, 30 Flemington Road, Parkville 3052, Victoria, Australia
| | - Mingdong Dong
- Interdisciplinary Nanoscience Center, Aarhus University, Aarhus C 8000, Denmark
| | - Min Li
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, Institute of High Energy Physics, the Chinese Academy of Sciences, Beijing 100049, China
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5
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Kim H, Lee S, Seo HW, Kang B, Moon J, Lee KG, Yong D, Kang H, Jung J, Lim EK, Jeong J, Park HG, Ryu CM, Kang T. Clustered Regularly Interspaced Short Palindromic Repeats-Mediated Surface-Enhanced Raman Scattering Assay for Multidrug-Resistant Bacteria. ACS NANO 2020; 14:17241-17253. [PMID: 33216524 DOI: 10.1021/acsnano.0c07264] [Citation(s) in RCA: 57] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Antimicrobial resistance and multidrug resistance are slower-moving pandemics than the fast-spreading coronavirus disease 2019; however, they have potential to cause a much greater threat to global health. Here, we report a clustered regularly interspaced short palindromic repeats (CRISPR)-mediated surface-enhanced Raman scattering (SERS) assay for multidrug-resistant (MDR) bacteria. This assay was developed via a synergistic combination of the specific gene-recognition ability of the CRISPR system, superb sensitivity of SERS, and simple separation property of magnetic nanoparticles. This assay detects three multidrug-resistant (MDR) bacteria, species Staphylococcus aureus, Acinetobacter baumannii, and Klebsiella pneumoniae, without purification or gene amplification steps. Furthermore, MDR A. baumannii-infected mice were successfully diagnosed using the assay. Finally, we demonstrate the on-site capture and detection of MDR bacteria through a combination of the three-dimensional nanopillar array swab and CRISPR-mediated SERS assay. This method may prove effective for the accurate diagnosis of MDR bacterial pathogens, thus preventing severe infection by ensuring appropriate antibiotic treatment.
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Affiliation(s)
| | | | | | | | - Jeong Moon
- Department of Chemical and Biomolecular Engineering (BK 21+ Program), Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon 34141, Republic of Korea
| | - Kyoung G Lee
- Nanobio Application Team, National NanoFab Center (NNFC), 291 Daehak-ro Yuseong-gu, Daejeon 34141, Republic of Korea
| | - Dongeun Yong
- Department of Laboratory Medicine and Research Institute of Bacterial Resistance, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul 03722, Republic of Korea
| | | | | | | | | | - Hyun Gyu Park
- Department of Chemical and Biomolecular Engineering (BK 21+ Program), Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon 34141, Republic of Korea
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6
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Wang Z, Ye S, Zhang N, Liu X, Wang M. Triggerable Mutually Amplified Signal Probe Based SERS-Microfluidics Platform for the Efficient Enrichment and Quantitative Detection of miRNA. Anal Chem 2019; 91:5043-5050. [PMID: 30900865 DOI: 10.1021/acs.analchem.8b05172] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Sensitive detection of microRNAs (miRNAs) that serve as a disease marker could advance the diagnosis and treatment of diseases. Many methods used for quantitative detection of miRNAs, such as PCR-based approaches or the hybridization chain reaction, have presented challenges due to the complicated and time-consuming-procedures that are required. In this manuscript, a simple triggerable mutually amplified signal (TMAS) probe was designed and enriched within the center of a microfluidic chip and then used for one-step quantitative detection of microRNAs via surface enhanced Raman scattering (SERS) technology. First, many mutually amplified double strands are produced via an enzyme-free target-strand displacement recycling reaction initiated by the target miRNA, that result in the generation of an enhanced SERS signal. Second, microfluidic chips that utilize alternating current (AC) electrokinetic flow technology produce efficient mixing and rapid concentration to improve the DNA hybridization rate and further enhance the SERS signal intensity. This method enables the sensitive and rapid detection of miR-21 in human breast cancer cells within 30 min with a detection limit of 2.33 fM. Compared with traditional methods, this novel method overcomes the shortcomings resulting from complex operations, and has the advantages of high sensitivity, short assay time, and reduced sample usage.
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Affiliation(s)
- Zhenxing Wang
- Key Laboratory of Optic-electric Sensing and Analytical Chemistry for Life Science, MOE; State Key Laboratory Base for Eco-chemical Engineering; Shandong Key Laboratory of Biochemical Analysis; Key Laboratory of Analytical Chemistry for Life Science in Universities of Shandong; College of Chemistry and Molecular Engineering , Qingdao University of Science and Technology , Qingdao 266042 , People's Republic of China
| | - Sujuan Ye
- Key Laboratory of Optic-electric Sensing and Analytical Chemistry for Life Science, MOE; State Key Laboratory Base for Eco-chemical Engineering; Shandong Key Laboratory of Biochemical Analysis; Key Laboratory of Analytical Chemistry for Life Science in Universities of Shandong; College of Chemistry and Molecular Engineering , Qingdao University of Science and Technology , Qingdao 266042 , People's Republic of China
| | - Na Zhang
- Key Laboratory of Optic-electric Sensing and Analytical Chemistry for Life Science, MOE; State Key Laboratory Base for Eco-chemical Engineering; Shandong Key Laboratory of Biochemical Analysis; Key Laboratory of Analytical Chemistry for Life Science in Universities of Shandong; College of Chemistry and Molecular Engineering , Qingdao University of Science and Technology , Qingdao 266042 , People's Republic of China
| | - Xun Liu
- Key Laboratory of Optic-electric Sensing and Analytical Chemistry for Life Science, MOE; State Key Laboratory Base for Eco-chemical Engineering; Shandong Key Laboratory of Biochemical Analysis; Key Laboratory of Analytical Chemistry for Life Science in Universities of Shandong; College of Chemistry and Molecular Engineering , Qingdao University of Science and Technology , Qingdao 266042 , People's Republic of China
| | - Menglei Wang
- Key Laboratory of Optic-electric Sensing and Analytical Chemistry for Life Science, MOE; State Key Laboratory Base for Eco-chemical Engineering; Shandong Key Laboratory of Biochemical Analysis; Key Laboratory of Analytical Chemistry for Life Science in Universities of Shandong; College of Chemistry and Molecular Engineering , Qingdao University of Science and Technology , Qingdao 266042 , People's Republic of China
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7
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Eom G, Hwang A, Lee DK, Guk K, Moon J, Jeong J, Jung J, Kim B, Lim EK, Kang T. Superb Specific, Ultrasensitive, and Rapid Identification of the Oseltamivir-Resistant H1N1 Virus: Naked-Eye and SERS Dual-Mode Assay Using Functional Gold Nanoparticles. ACS APPLIED BIO MATERIALS 2019; 2:1233-1240. [DOI: 10.1021/acsabm.8b00807] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Gayoung Eom
- Bionanotechnology Research Center, KRIBB, Daejeon 34141, Republic of Korea
- Department of Chemistry, KAIST, Daejeon 34141, Republic of Korea
| | - Ahreum Hwang
- Bionanotechnology Research Center, KRIBB, Daejeon 34141, Republic of Korea
- Department of Chemistry, KAIST, Daejeon 34141, Republic of Korea
| | - Do Kyung Lee
- BioNano Health Guard Research Center, KRIBB, Daejeon 34141, Republic of Korea
| | - Kyeonghye Guk
- Bionanotechnology Research Center, KRIBB, Daejeon 34141, Republic of Korea
- Department of Nanobiotechnology, KRIBB School of Biotechnology, UST, Daejeon 34113, Republic of Korea
| | - Jeong Moon
- Bionanotechnology Research Center, KRIBB, Daejeon 34141, Republic of Korea
- Department of Chemical and Biomolecular Engineering, KAIST, Daejeon 34141, Republic of Korea
| | - Jinyoung Jeong
- Department of Nanobiotechnology, KRIBB School of Biotechnology, UST, Daejeon 34113, Republic of Korea
- Environmental Disease Research Center, KRIBB, Daejeon 34141, Republic of Korea
| | - Juyeon Jung
- Bionanotechnology Research Center, KRIBB, Daejeon 34141, Republic of Korea
- Department of Nanobiotechnology, KRIBB School of Biotechnology, UST, Daejeon 34113, Republic of Korea
| | - Bongsoo Kim
- Department of Chemistry, KAIST, Daejeon 34141, Republic of Korea
| | - Eun-Kyung Lim
- Bionanotechnology Research Center, KRIBB, Daejeon 34141, Republic of Korea
- Department of Nanobiotechnology, KRIBB School of Biotechnology, UST, Daejeon 34113, Republic of Korea
| | - Taejoon Kang
- Bionanotechnology Research Center, KRIBB, Daejeon 34141, Republic of Korea
- Department of Nanobiotechnology, KRIBB School of Biotechnology, UST, Daejeon 34113, Republic of Korea
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8
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Pei X, Yin H, Lai T, Zhang J, Liu F, Xu X, Li N. Multiplexed Detection of Attomoles of Nucleic Acids Using Fluorescent Nanoparticle Counting Platform. Anal Chem 2018; 90:1376-1383. [DOI: 10.1021/acs.analchem.7b04551] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
| | | | | | | | | | - Xiao Xu
- Division
of Nano Metrology and Materials Measurement, National Institute of Metrology, Beijing 100029, P. R. China
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9
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Wang Z, Zong S, Wu L, Zhu D, Cui Y. SERS-Activated Platforms for Immunoassay: Probes, Encoding Methods, and Applications. Chem Rev 2017; 117:7910-7963. [DOI: 10.1021/acs.chemrev.7b00027] [Citation(s) in RCA: 368] [Impact Index Per Article: 52.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Zhuyuan Wang
- Advanced Photonics Center, Southeast University, Nanjing 210096, Jiangsu, China
| | - Shenfei Zong
- Advanced Photonics Center, Southeast University, Nanjing 210096, Jiangsu, China
| | - Lei Wu
- Advanced Photonics Center, Southeast University, Nanjing 210096, Jiangsu, China
| | - Dan Zhu
- Advanced Photonics Center, Southeast University, Nanjing 210096, Jiangsu, China
| | - Yiping Cui
- Advanced Photonics Center, Southeast University, Nanjing 210096, Jiangsu, China
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Gwak R, Kim H, Yoo SM, Lee SY, Lee GJ, Lee MK, Rhee CK, Kang T, Kim B. Precisely Determining Ultralow level UO2(2+) in Natural Water with Plasmonic Nanowire Interstice Sensor. Sci Rep 2016; 6:19646. [PMID: 26791784 PMCID: PMC4726367 DOI: 10.1038/srep19646] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2015] [Accepted: 12/15/2015] [Indexed: 01/01/2023] Open
Abstract
Uranium is an essential raw material in nuclear energy generation; however, its use raises concerns about the possibility of severe damage to human health and the natural environment. In this work, we report an ultrasensitive uranyl ion (UO22+) detection method in natural water that uses a plasmonic nanowire interstice (PNI) sensor combined with a DNAzyme-cleaved reaction. UO22+ induces the cleavage of DNAzymes into enzyme strands and released strands, which include Raman-active molecules. A PNI sensor can capture the released strands, providing strong surface-enhanced Raman scattering signal. The combination of a PNI sensor and a DNAzyme-cleaved reaction significantly improves the UO22+ detection performance, resulting in a detection limit of 1 pM and high selectivity. More importantly, the PNI sensor operates perfectly, even in UO22+-contaminated natural water samples. This suggests the potential usefulness of a PNI sensor in practical UO22+-sensing applications. We anticipate that diverse toxic metal ions can be detected by applying various ion-specific DNA-based ligands to PNI sensors.
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Affiliation(s)
- Raekeun Gwak
- KAIST, Department of Chemistry, Daejeon 34141, Korea
| | - Hongki Kim
- KAIST, Department of Chemistry, Daejeon 34141, Korea
| | - Seung Min Yoo
- KAIST, Department of Chemical and Biomolecular Engineering, Daejeon 34141, Korea
| | - Sang Yup Lee
- KAIST, Department of Chemical and Biomolecular Engineering, Daejeon 34141, Korea
| | - Gyoung-Ja Lee
- KAERI, Nuclear Materials Development Division, Daejeon 34057, Korea
| | - Min-Ku Lee
- KAERI, Nuclear Materials Development Division, Daejeon 34057, Korea
| | - Chang-Kyu Rhee
- KAERI, Nuclear Materials Development Division, Daejeon 34057, Korea
| | - Taejoon Kang
- KRIBB, BioNanotechnology Research Center and BioNano Health Guard Research Center, Daejeon 34141, Korea.,UST, Major of Nanobiotechnology and Bioinformatics, Daejeon 34113, Korea
| | - Bongsoo Kim
- KAIST, Department of Chemistry, Daejeon 34141, Korea
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11
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Affiliation(s)
- Richard M. Graybill
- Department of Chemistry, University of Illinois at Urbana-Champaign, 600 S. Mathews Ave., Urbana, IL 61801
| | - Ryan C. Bailey
- Department of Chemistry, University of Illinois at Urbana-Champaign, 600 S. Mathews Ave., Urbana, IL 61801
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