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Tang S, Hao Q, Huang Y, Zhao S, Hu K. Highly selective and sensitive histamine and tryptamine analysis using SiO 2@AuNPs@PDA molecularly imprinted polymer coupled with SALDI-TOF MS. Talanta 2024; 270:125538. [PMID: 38086223 DOI: 10.1016/j.talanta.2023.125538] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2023] [Revised: 11/07/2023] [Accepted: 12/07/2023] [Indexed: 01/27/2024]
Abstract
A combination of SiO2@AuNPs@PDA molecularly imprinted and surface-assisted laser desorption/ionization-time-of-flight mass spectrometry (SALDI-TOF MS) was devised as a method for highly specific and ultrasensitive detection of two biogenic amines-histamine (HIS) and tryptamine (TRP)-in real samples. In this strategy, AuNPs modified amino-abundant silica nanospheres (SiO2@AuNPs). The prepared SiO2@AuNPs were used as a substrate to synthesize a molecularly imprinted polymer (MIP) through in situ dopamine self-polymerization with HIS and TRP as the template molecules (SiO2@AuNP@PDA-MIP). The as-prepared MIP structure, properties, and target-analyte identification conditions were characterized and optimized and it was used as the matrix for MS. Compared to the case of nonimprinted materials, the imprinting function endowed the matrix with a higher selectivity for capturing the target molecules. The enriched analytes were directly and rapidly identified using SALDI-TOF MS without elution. Meanwhile, the proposed method has low background interference, good reproducibility and stability, high salt tolerance, and satisfactory linearity (R2 > 0.99), and it enables ultrasensitive detection of HIS and TRP (limits of detection for HIS and TRP were 0.2 and 0.1 ng mL-1, respectively). Moreover, the proposed method was applied to analyze samples of real beer, sausage, and chicken, and the results agreed with those obtained via liquid chromatography-MS, suggesting that the method has excellent practical applications in the field of food safety.
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Affiliation(s)
- Shuiping Tang
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources/Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources (Ministry of Education of China), School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin, 541004, PR China
| | - Qing Hao
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources/Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources (Ministry of Education of China), School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin, 541004, PR China
| | - Yong Huang
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources/Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources (Ministry of Education of China), School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin, 541004, PR China
| | - Shulin Zhao
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources/Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources (Ministry of Education of China), School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin, 541004, PR China
| | - Kun Hu
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources/Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources (Ministry of Education of China), School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin, 541004, PR China.
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2
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Yang C, Sun J, Zhang Y, Tang J, Liu Z, Zhan T, Wang DB, Zhang G, Liu Z, Zhang XE. Construction of AlGaN/GaN high-electron-mobility transistor-based biosensor for ultrasensitive detection of SARS-CoV-2 spike proteins and virions. Biosens Bioelectron 2024; 257:116171. [PMID: 38636317 DOI: 10.1016/j.bios.2024.116171] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2023] [Revised: 02/07/2024] [Accepted: 02/24/2024] [Indexed: 04/20/2024]
Abstract
The COVID-19 pandemic has highlighted the need for rapid and sensitive detection of SARS-CoV-2. Here, we report an ultrasensitive SARS-CoV-2 immunosensor by integration of an AlGaN/GaN high-electron-mobility transistor (HEMT) and anti-SARS-CoV-2 spike protein antibody. The AlGaN/GaN HEMT immunosensor has demonstrated the capability to detect SARS-CoV-2 spike proteins at an impressively low concentration of 10-22 M. The sensor was also applied to pseudoviruses and SARS-CoV-2 ΔN virions that display the Spike proteins with a single virion particle sensitivity. These features validate the potential of AlGaN/GaN HEMT biosensors for point of care tests targeting SARS-CoV-2. This research not only provides the first HEMT biosensing platform for ultrasensitive and label-free detection of SARS-CoV-2.
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Affiliation(s)
- Chenyang Yang
- Key Laboratory of Biomacromolecules (CAS), National Laboratory of Biomacromolecules, CAS Center for Excellence in Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, 100101, China; University of Chinese Academy of Science, Beijing, 100049, China
| | - Jianwen Sun
- School of Integrated Circuits, Tsinghua University, Beijing, 10084, China
| | - Yulong Zhang
- School of Integrated Circuits, Tsinghua University, Beijing, 10084, China
| | - Jingya Tang
- Key Laboratory of Biomacromolecules (CAS), National Laboratory of Biomacromolecules, CAS Center for Excellence in Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, 100101, China; University of Chinese Academy of Science, Beijing, 100049, China
| | - Zizheng Liu
- Key Laboratory of Biomacromolecules (CAS), National Laboratory of Biomacromolecules, CAS Center for Excellence in Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, 100101, China
| | - Teng Zhan
- Research and Development Center for Solid State Lighting, Institute of Semiconductors, Chinese Academy of Sciences, Qinghua East Road 35A, Beijing, 10083, China
| | - Dian-Bing Wang
- Key Laboratory of Biomacromolecules (CAS), National Laboratory of Biomacromolecules, CAS Center for Excellence in Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, 100101, China.
| | - Guoqi Zhang
- Department of Microelectronics, Delft University of Technology, 2628, CD Delft, the Netherlands.
| | - Zewen Liu
- School of Integrated Circuits, Tsinghua University, Beijing, 10084, China.
| | - Xian-En Zhang
- Key Laboratory of Biomacromolecules (CAS), National Laboratory of Biomacromolecules, CAS Center for Excellence in Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, 100101, China; Faculty of Synthetic Biology, Shenzhen Institute of Advances Technology, Shenzhen, 518055, China; University of Chinese Academy of Science, Beijing, 100049, China.
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3
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Peng R, Qi W, Deng T, Si Y, Li J. Development of surface-enhanced Raman scattering-sensing Method by combining novel Ag@Au core/shell nanoparticle-based SERS probe with hybridization chain reaction for high-sensitive detection of hepatitis C virus nucleic acid. Anal Bioanal Chem 2024:10.1007/s00216-024-05219-7. [PMID: 38436691 DOI: 10.1007/s00216-024-05219-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2023] [Revised: 01/31/2024] [Accepted: 02/13/2024] [Indexed: 03/05/2024]
Abstract
The ultrasensitive detection of hepatitis C virus (HCV) nucleic acid is crucial for the early diagnosis of hepatitis C. In this study, by combining Ag@Au core/shell nanoparticle (Ag@AuNP)-based surface-enhanced Raman scattering (SERS) tag with hybridization chain reaction (HCR), a novel SERS-sensing method was developed for the ultrasensitive detection of HCV nucleic acid. This SERS-sensing system comprised two different SERS tags, which were constructed by modifying Ag@AuNP with a Raman reporter molecule of 4-ethynylbezaldehyde, two different hairpin-structured HCR sequences (H1 or H2), and a detection plate prepared by immobilizing a capture DNA sequence onto the Ag@AuNP layer surface of the detection wells. When the target nucleic acid was present, the two SERS tags were captured on the surface of the Ag@AuNP-coated detection well to generate many "hot spots" through HCR, forming a strong SERS signal and realizing the ultrasensitive detection of the target HCV nucleic acid. The limit of detection of the SERS-sensing method for HCV nucleic acid was 0.47 fM, and the linear range was from 1 to 105 fM.
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Affiliation(s)
- Ruiying Peng
- Institute of Applied Chemistry, School of Science, Central South University of Forestry and Technology, Changsha, 410004, People's Republic of China
- State Key Laboratory of Chemo/Bio-Sensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082, People's Republic of China
| | - Wenchen Qi
- State Key Laboratory of Chemo/Bio-Sensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082, People's Republic of China
| | - Ting Deng
- Institute of Applied Chemistry, School of Science, Central South University of Forestry and Technology, Changsha, 410004, People's Republic of China.
| | - Yanmei Si
- Institute of Forensic Medicine and Laboratory Medicine, Jining Medical University, Jining, 272067, People's Republic of China
| | - Jishan Li
- State Key Laboratory of Chemo/Bio-Sensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082, People's Republic of China.
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4
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Xu H, Lian Z, Hao X, Li F, Yu RC. Ultrasensitive fluorescence detection of gonyautoxins in seawater using a novel molecularly imprinted nanoprobe. Sci Total Environ 2024; 912:169056. [PMID: 38056639 DOI: 10.1016/j.scitotenv.2023.169056] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2023] [Revised: 11/29/2023] [Accepted: 11/30/2023] [Indexed: 12/08/2023]
Abstract
Gonyautoxins (GTXs), a group of potent neurotoxins belonging to paralytic shellfish toxins (PSTs), are often associated with harmful algal blooms of toxic dinoflagellates in the sea and represent serious health and ecological concerns worldwide. In the study, a highly selective and sensitive fluorescence nanoprobe was constructed based on photoinduced electron transfer recognition mechanism to rapidly detect GTXs in seawater, using specific entrapment of molecularly imprinted polymers (MIPs) combined with fluorescence analyses. The green emissive fluorescein isothiocyanate was grafted in a silicate matrix as a signal transducer and fluorescence intensity of the nanoprobe with a core-shell structure exhibited a strong enhancement due to efficient analyte blockage in a short response time. Under optimal conditions, the developed MIPs nanoprobe presented an excellent analytical performance for spiked seawater samples including a recovery from 94.44 % to 98.23 %, a linear range between 0.018 nmol L-1 and 0.36 nmol L-1, as well as good accuracy. Furthermore, the method had extremely high sensitivity, with limit of detection obtained as 0.005 nmol L-1 for GTXs and GTX2/3. Finally, the nanoprobe was applied for the determination of GTXs in seven natural seawater samples with GTXs mixture (0.035-0.058 nmol L-1) or single GTX2/3 (0.033-0.050 nmol L-1), and the results agreed well with those of a UPLC-MS/MS method. The findings of our study suggest that the constructed MIPs-based fluorescence enhancement nanoprobe was suitable for rapid, selective and ultrasensitive detection of GTXs, particular GTX2/3, in natural seawater samples.
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Affiliation(s)
- Huan Xu
- Marine College, Shandong University, Weihai 264209, P.R. China
| | - Ziru Lian
- Marine College, Shandong University, Weihai 264209, P.R. China.
| | - Xiaochen Hao
- Marine College, Shandong University, Weihai 264209, P.R. China
| | - Fang Li
- Marine College, Shandong University, Weihai 264209, P.R. China
| | - Ren-Cheng Yu
- CAS Key Laboratory of Marine Ecology and Environmental Sciences, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, 266071, P.R. China; University of Chinese Academy of Sciences, Beijing, 100049, P.R. China
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5
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Yuan L, Li M, Li J, Zhu TF, Dong M, Liu L. Aggregation-induced signal amplification strategy based on peptide self-assembly for ultrasensitive electrochemical detection of melanoma biomarker. Anal Chim Acta 2024; 1289:342214. [PMID: 38245208 DOI: 10.1016/j.aca.2024.342214] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2023] [Revised: 12/27/2023] [Accepted: 01/02/2024] [Indexed: 01/22/2024]
Abstract
The detection of melanoma circulating biomarker in liquid biopsies is current under evaluation for being potentially utilized for earlier cancer diagnosis and its metastasis. Herein, we developed a non-invasive electrochemical approach for ultrasensitive detection of the S100B, serving as a potential promising blood circulating biomarker of melanoma, based on an aggregation-induced signal amplification (AISA) strategy via in-situ peptide self-assembly. The fundamental principle of this assay is that the designed amphiphilic peptides (C16-Pep-Fc), fulfilling multiple functions, feature both a recognition region for specific binding to S100B and an aggregation (self-assembly) region for the formation of peptide nanomicelles under mild conditions. The C16 tails were encapsulated within the hydrophobic core of the aggregates, while the relatively hydrophilic recognition fragment Pep and Fc tag were exposed on the outer surface for subsequent recognition of S100B and signal output. AISA provided remarkable accumulation of electroactive Fc moieties that enabled ultrasensitive S100B detection of as low as 0.02 nM, which was 10-fold lower than un-amplified approach and better than previously reported assays. As a proof-of-concept study, further experiments also highlighted the good reproducibility and stability of AISA and demonstrated its usability when applied to simulated serum samples. Hence, this work not only presented a valuable assay tool for ultrasensitive detecting protein biomarker, but also advocated for the utilization of aggregation-induced signal amplification in electrochemical biosensing system, given its considerable potential for future practical applications.
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Affiliation(s)
- Liang Yuan
- Institute for Advanced Materials, School of Materials Science and Engineering, Jiangsu University, Zhenjiang, 212013, PR China
| | - Mengfei Li
- Institute for Advanced Materials, School of Materials Science and Engineering, Jiangsu University, Zhenjiang, 212013, PR China
| | - Jiaying Li
- Department of Pulmonary and Critical Care Medicine, Yixing Hospital Affiliated to Jiangsu University, Yixing, 214200, PR China
| | - Tao-Feng Zhu
- Department of Pulmonary and Critical Care Medicine, Yixing Hospital Affiliated to Jiangsu University, Yixing, 214200, PR China.
| | - Mingdong Dong
- Interdisciplinary Nanoscience Center (iNANO), Aarhus University, Aarhus, Denmark
| | - Lei Liu
- Institute for Advanced Materials, School of Materials Science and Engineering, Jiangsu University, Zhenjiang, 212013, PR China.
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Zhang H, Wu S, Xiao HJ, Wang HB, Fang L, Cao JT. Chemical-chemical redox cycling for improving the sensitivity of the fluorescent assay: A proof-of-concept towards DNA methylation detection. Talanta 2024; 268:125363. [PMID: 37906997 DOI: 10.1016/j.talanta.2023.125363] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2023] [Revised: 10/17/2023] [Accepted: 10/26/2023] [Indexed: 11/02/2023]
Abstract
Ultrasensitive analytical methods are still urgent for the discovery of trace level biomarkers and the early clinical diagnosis of disease. In this work, an ultrasensitive universal sensing platform was constructed by integrating fluorescent assay with chemical-chemical redox cycling signal amplification strategy. Using Ru@SiO2 nanoparticles wrapped by MnO2 nanosheets (Ru@SiO2@MnO2) as fluorescent probe, the chemical-chemical redox cycling system was conducted upon ascorbic acid (AA) and tris(2-carboxyethyl)phosphine (TCEP) as reductants and MnO2 nanosheets as oxidant. The MnO2 nanosheets not only could quench the fluorescence of Ru@SiO2 nanoparticles to reduce the background, but also could serve as oxidants to react with AA, generating dehydroascorbic acid (DHA). The DHA was reduced by TCEP in turn to form AA that participated in the next cycling of chemical-chemical redox reaction. Thus, the constantly released AA from the chemical-chemical redox cycling system could massively etch MnO2 nanosheets on Ru@SiO2 surface, making the fluorescence of Ru@SiO2 nanoparticles greatly recovered. It was shown that the sensitivity of the fluorescent assay was improved almost 52 times by utilizing the chemical-chemical redox cycling signal amplification strategy. This strategy was further employed to detect DNA methylation with the aid of AA-encapsulated liposomes that were modified with 5 mC antibodies to bind with the methylated DNA captured in 96-well plate. A detection of limit down to 16.2 fM was achieved for the detection of methylated DNA. It's believed that the incorporation of chemical-chemical redox cycling signal amplification strategy into fluorescent sensing paves a new way for ultrasensitive detection of biomarkers.
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Affiliation(s)
- Hongding Zhang
- College of Chemistry and Chemical Engineering, Xinyang Key Laboratory of Functional Nanomaterials for Bioanalysis, Xinyang Normal University, Xinyang, 464000, PR China.
| | - Sifei Wu
- College of Chemistry and Chemical Engineering, Xinyang Key Laboratory of Functional Nanomaterials for Bioanalysis, Xinyang Normal University, Xinyang, 464000, PR China
| | - Hui-Jin Xiao
- College of Chemistry and Chemical Engineering, Xinyang Key Laboratory of Functional Nanomaterials for Bioanalysis, Xinyang Normal University, Xinyang, 464000, PR China
| | - Hai-Bo Wang
- College of Chemistry and Chemical Engineering, Xinyang Key Laboratory of Functional Nanomaterials for Bioanalysis, Xinyang Normal University, Xinyang, 464000, PR China
| | - Linxia Fang
- College of Chemistry and Chemical Engineering, Xinyang Key Laboratory of Functional Nanomaterials for Bioanalysis, Xinyang Normal University, Xinyang, 464000, PR China
| | - Jun-Tao Cao
- College of Chemistry and Chemical Engineering, Xinyang Key Laboratory of Functional Nanomaterials for Bioanalysis, Xinyang Normal University, Xinyang, 464000, PR China.
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Cao C, Zhou J, Zhang X, Zhang X, Li J, Li H, Chen S, Gong X, Wang S. A red-emitting ultrasensitive fluorescent probe for specific detection and biological visualization of cysteine in vitro and in vivo. Spectrochim Acta A Mol Biomol Spectrosc 2024; 305:123429. [PMID: 37769465 DOI: 10.1016/j.saa.2023.123429] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/22/2023] [Revised: 09/04/2023] [Accepted: 09/17/2023] [Indexed: 09/30/2023]
Abstract
Developing efficient strategies for specific detection of cysteine (Cys) is of great importance for identifying complicated biological roles in physiological and pathological processes. Herein, an ultrasensitive red-emission fluorescent probe (termed 1) is constructed for specific detection and biological visualization of Cys. The linked-anthocyanin fluorophore modified with a twisted N, N-diethylamino moiety shows improved red-shifted emission (642 nm) and absolute quantum yield (0.224 in dimethyl sulfoxide), as well as minimal fluorescence background signal and good water solubility. Meanwhile, utilizing acryloyl chloride as recognition group endows the probe 1 with excellent sensitivity and selectivity towards Cys (limit of detection: 2.93 nM). More importantly, the in vitro and in vivo results confirm that the probe 1 has the capacity of fluorescence imaging of Cys and good biological safety, which holds great promise for bioanalysis and biosensing of Cys.
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Affiliation(s)
- Chen Cao
- School of Life Sciences, Tianjin University, Tianjin 300072, China
| | - Jun Zhou
- School of Life Sciences, Tianjin University, Tianjin 300072, China
| | - Xinlu Zhang
- School of Life Sciences, Tianjin University, Tianjin 300072, China
| | - Xu Zhang
- School of Life Sciences, Tianjin University, Tianjin 300072, China
| | - Jiansen Li
- School of Life Sciences, Tianjin University, Tianjin 300072, China
| | - Huan Li
- School of Life Sciences, Tianjin University, Tianjin 300072, China
| | - Shutong Chen
- School of Life Sciences, Tianjin University, Tianjin 300072, China
| | - Xiaoqun Gong
- School of Life Sciences, Tianjin University, Tianjin 300072, China.
| | - Sheng Wang
- School of Life Sciences, Tianjin University, Tianjin 300072, China.
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Dikmen G. Surface enhanced Raman spectroscopy sensor based on silver nanoparticles/multi wall carbon nanotubes for ultrasensitive detection of cholesterol. Spectrochim Acta A Mol Biomol Spectrosc 2023; 303:123235. [PMID: 37562216 DOI: 10.1016/j.saa.2023.123235] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/27/2023] [Revised: 08/02/2023] [Accepted: 08/03/2023] [Indexed: 08/12/2023]
Abstract
Cholesterol is vital for living things because of an important part of cell membranes, as well as one of the basic components of brain and nerve cells. However, cholesterol must be at an optimum level. If it is below or above this level, it is a marker of many various diseases. Therefore, the detection of cholesterol amount is very important. Herein, MWCNTs were synthesized and AgNPs were grown on their surfaces. Thus, AgNP/MWCNT hybrid material was obtained. The AgNP/MWCNTs were used as surface enhancement Raman scattering (SERS) substrate to quantify the cholesterol molecule. High SERS enhancement of AgNP/MWCNT, specific SERS sensing platform and high sensitive SERS substrate were proposed to determine and monitor cholesterol molecule. AgNP/MWCNT substrate was studied in the concentration range of 10-3-10-10 M and the limit of detection (LOD) was calculated as 3.24 × 10-11 M. In addition, the enhancement factor (EF) was determined as 6.21 × 109. As a result, it was reported in this study that cholesterol molecule can be determined with excellent accuracy, precision and sensitive by using AgNP/MWCNT substrate and therefore it can provide great potential in clinical diagnosis and health management.
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Affiliation(s)
- Gökhan Dikmen
- Eskisehir Osmangazi University, Central Research Laboratory Application and Research Center (ARUM), Eskisehir 26040, Turkey.
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Zhang H, Wu S, Song Z, Fang L, Wang HB. Tannic acid-accelerated fenton chemical reaction amplification for fluorescent biosensing: The proof-of-concept towards ultrasensitive detection of DNA methylation. Talanta 2023; 265:124811. [PMID: 37327662 DOI: 10.1016/j.talanta.2023.124811] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2023] [Revised: 06/08/2023] [Accepted: 06/09/2023] [Indexed: 06/18/2023]
Abstract
As a promising biomarker, the level of methylated DNA usually changes in the early stage of the cancer. Ultrasensitive detection of the changes of methylated DNA offers possibility for early diagnosis of cancer. In this work, a tannic acid-accelerated Fenton chemical reaction amplification was firstly proposed for the construction of ultrasensitive fluorescent assay. Tannic acid was used as reductant to accelerate Fenton reaction procedure through the conversion of Fe3+/Fe2+, generating hydroxyl radicals (·OH) continuously. The produced ·OH oxidized massive non-fluorescent terephthalic acid (TA) to fluorescent-emitting hydroxy terephthalic acid (TAOH). In this way, the fluorescent signal could be greatly enhanced and the sensitivity was improved almost 116 times. The proposed signal amplification strategy was further applied to detect of DNA methylation with the assistance of liposome encapsulated with tannic-Fe3+ complexes. The methylated DNA was firstly captured through the hybridization with its complementary DNA that were pre-modified in the 96-well plate via the combination between streptavidin (SA) and biotin. Then, 5 mC antibody on the surface of liposomes specially recognized and combined with methylation sites, which brought large amount of tannic-Fe3+ complexes to participate Fenton reaction. The fluorescence of generated TAOH was depended on the concentration of methylated DNA. The assay showed good analytical performance for methylated DNA with a limit of detection (LOD) of 1.4 fM. It's believed that tannic acid-accelerated Fenton chemical reaction amplification strategy provides a promising platform for ultrasensitive fluorescent detection of low abundant biomarkers.
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Affiliation(s)
- Hongding Zhang
- College of Chemistry and Chemical Engineering, Xinyang Key Laboratory of Functional Nanomaterials for Bioanalysis, Institute for Conservation and Utilization of Agro-bioresources in Dabie Mountains, Henan Province Key Laboratory of Utilization of Non-metallic Mineral in the South of Henan, Xinyang Normal University, Xinyang, 464000, PR China; State Key Laboratory of Chemo/Biosensing Ad Chemometrics, Hunan University, Changsha, 410082, PR China.
| | - Sifei Wu
- College of Chemistry and Chemical Engineering, Xinyang Key Laboratory of Functional Nanomaterials for Bioanalysis, Institute for Conservation and Utilization of Agro-bioresources in Dabie Mountains, Henan Province Key Laboratory of Utilization of Non-metallic Mineral in the South of Henan, Xinyang Normal University, Xinyang, 464000, PR China
| | - Zhixiao Song
- College of Chemistry and Chemical Engineering, Xinyang Key Laboratory of Functional Nanomaterials for Bioanalysis, Institute for Conservation and Utilization of Agro-bioresources in Dabie Mountains, Henan Province Key Laboratory of Utilization of Non-metallic Mineral in the South of Henan, Xinyang Normal University, Xinyang, 464000, PR China
| | - Linxia Fang
- College of Chemistry and Chemical Engineering, Xinyang Key Laboratory of Functional Nanomaterials for Bioanalysis, Institute for Conservation and Utilization of Agro-bioresources in Dabie Mountains, Henan Province Key Laboratory of Utilization of Non-metallic Mineral in the South of Henan, Xinyang Normal University, Xinyang, 464000, PR China
| | - Hai-Bo Wang
- College of Chemistry and Chemical Engineering, Xinyang Key Laboratory of Functional Nanomaterials for Bioanalysis, Institute for Conservation and Utilization of Agro-bioresources in Dabie Mountains, Henan Province Key Laboratory of Utilization of Non-metallic Mineral in the South of Henan, Xinyang Normal University, Xinyang, 464000, PR China
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Wang W, Geng L, Zhang Y, Shen W, Bi M, Gong T, Hu Z, Guo C, Wang T, Sun T. Development of antibody-aptamer sandwich-like immunosensor based on RCA and Nicked-PAM CRISPR/Cas12a system for the ultra-sensitive detection of a biomarker. Anal Chim Acta 2023; 1283:341849. [PMID: 37977804 DOI: 10.1016/j.aca.2023.341849] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2023] [Revised: 09/22/2023] [Accepted: 09/24/2023] [Indexed: 11/19/2023]
Abstract
Biomarkers are the most sensitive reactants and early indicators of many kinds of diseases. The development of highly sensitive and simple techniques to quantify them is challenging. In this study, based on rolling cycle amplification (RCA) and the Nicked PAM/CRISPR-Cas12a system (RNPC) as a signal reporter, a sandwich-type method was developed using antibody@magnetic beads and aptamer for the high-sensitive detection of the C-reactive protein (CRP). The antibody-antigen (target)-aptamer sandwich-like reaction was coupled to RCA, which can produce hundreds of similar binding sites and are discriminated by CRISPR/Cas12a for signal amplification. The ultrasensitivity is achieved based on the dual-signal enhancing strategy, which involves the special recognition of aptamers, RCA, and trans-cleavage of CRISPR/Cas12a. By incorporating the CRISPR/Cas12a system with cleaved PAM, the nonspecific amplification of the RCA reaction alone was greatly reduced, and the dual signal output of RCA and Cas12a improved the detection sensitivity. Our assay can be performed only in two steps. The first step takes only 20 min of target capture, followed by a one-pot reaction, where the target concentration can be obtained by fluorescence values as long as there are 37 °C reaction conditions. Under optimal conditions, this system detected CRP with high sensitivity. The fabricated biosensor showed detection limits of 0.40 pg/mL in phosphate-buffered saline and 0.73 pg/mL in diluted human serum and a broad linear dynamic range of 1.28 pg/mL to 100 ng/mL within a total readout time of 90 min. The method could be used to perform multi-step signal amplification, which can help in the ultrasensitive detection of other proteins. Overall, the proposed biosensor might be used as an immunosensor biosensor platform.
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Affiliation(s)
- Wen Wang
- Tianjin Key Laboratory of Risk Assessment and Control Technology for Environment and Food Safety, Tianjin Institute of Environmental and Operational Medicine, Tianjin, 300050, PR China; School of Public Health and Management, Binzhou Medical College, Shandong, 264003, PR China
| | - Lu Geng
- Tianjin Key Laboratory of Risk Assessment and Control Technology for Environment and Food Safety, Tianjin Institute of Environmental and Operational Medicine, Tianjin, 300050, PR China
| | - Yiyang Zhang
- Tianjin Key Laboratory of Risk Assessment and Control Technology for Environment and Food Safety, Tianjin Institute of Environmental and Operational Medicine, Tianjin, 300050, PR China
| | - Weili Shen
- Tianjin Key Laboratory of Risk Assessment and Control Technology for Environment and Food Safety, Tianjin Institute of Environmental and Operational Medicine, Tianjin, 300050, PR China
| | - Meng Bi
- Tianjin Key Laboratory of Risk Assessment and Control Technology for Environment and Food Safety, Tianjin Institute of Environmental and Operational Medicine, Tianjin, 300050, PR China
| | - Tingting Gong
- Tianjin Key Laboratory of Risk Assessment and Control Technology for Environment and Food Safety, Tianjin Institute of Environmental and Operational Medicine, Tianjin, 300050, PR China
| | - Zhiyong Hu
- School of Public Health and Management, Binzhou Medical College, Shandong, 264003, PR China
| | - Changjiang Guo
- Tianjin Key Laboratory of Risk Assessment and Control Technology for Environment and Food Safety, Tianjin Institute of Environmental and Operational Medicine, Tianjin, 300050, PR China; School of Public Health and Management, Binzhou Medical College, Shandong, 264003, PR China.
| | - Tianhui Wang
- Tianjin Key Laboratory of Risk Assessment and Control Technology for Environment and Food Safety, Tianjin Institute of Environmental and Operational Medicine, Tianjin, 300050, PR China.
| | - Tieqiang Sun
- Tianjin Key Laboratory of Risk Assessment and Control Technology for Environment and Food Safety, Tianjin Institute of Environmental and Operational Medicine, Tianjin, 300050, PR China.
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11
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Chu C, Jiang M, Hui Y, Huang Y, Kong W, Zhu W, Wei J, Wu L, Huang C, Yu XF, Zhao Z, Zhou W, Geng S, Ji L. Colorimetric immunosensing using liposome encapsulated MnO 2 nanozymes for SARS-CoV-2 antigen detection. Biosens Bioelectron 2023; 239:115623. [PMID: 37643492 DOI: 10.1016/j.bios.2023.115623] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2023] [Revised: 08/16/2023] [Accepted: 08/18/2023] [Indexed: 08/31/2023]
Abstract
Development of specific signal reporters with signal amplification effect are highly needed for sensitive and accurate detection of pathogen. Herein, we design a colorimetric immunosensing nanosystem based on liposome encapsulated quantum dots-sized MnO2 nanozyme (MnO2QDs@Lip) as a signal reporter for ultrasensitive and fast detection of SARS-CoV-2 antigen. The pathogenic antigens captured and separated by antibody-conjugated magnetic beads (MBs) are further connected with antibody-modified MnO2QDs@Lip to form a sandwich-like immunocomplex structure. After triggered release, MnO2 QDs efficiently catalyze colorless 3,3',5,5'-tetramethylbenzidine (TMB) to blue oxidized TMB, which can be qualitatively observed by naked eyes and quantitatively analyzed by UV-Vis spectra or smartphone platforms. By taking advantages of immuno-magnetic separation, excellent peroxidase-like catalytic activity of MnO2 QDs, and high encapsulation efficiency of MnO2QDs@Lip, ultrasensitive detection of SARS-CoV-2 antigen ranging from 0.1 pg/mL to 100 ng/mL is achieved within 20 min. The limit of detection (LOD) is calculated to be 65 fg/mL in PBS buffer. Furthermore, real clinical samples of SARS-CoV-2 antigens can be effectively identified by this immunosensing nanosystem with excellent accuracy. This proposed detection nanosystem provides a strategy for simple, rapid and ultrasensitive detection of pathogens and may shed light on the development of new POCT detection platforms for early diagnosis of pathogens and surveillance in public health.
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Affiliation(s)
- Chenchen Chu
- Department of Laboratory Medicine, Peking University Shenzhen Hospital, Shenzhen, 518055, China; Shenzhen Key Laboratory of Micro/Nano Biosensing, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, China; Department of Medical Laboratory, Weifang Medical University, Weifang 261053, China
| | - Mingyang Jiang
- Shenzhen Key Laboratory of Micro/Nano Biosensing, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, China
| | - Yun Hui
- Shenzhen Key Laboratory of Micro/Nano Biosensing, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, China
| | - Yueying Huang
- Department of Laboratory Medicine, Peking University Shenzhen Hospital, Shenzhen, 518055, China
| | - Weijun Kong
- Shenzhen Key Laboratory of Micro/Nano Biosensing, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, China
| | - Wenting Zhu
- Shenzhen Key Laboratory of Micro/Nano Biosensing, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, China
| | - Jitao Wei
- Shenzhen Key Laboratory of Micro/Nano Biosensing, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, China
| | - Lie Wu
- Shenzhen Key Laboratory of Micro/Nano Biosensing, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, China
| | - Chi Huang
- Shenzhen Key Laboratory of Micro/Nano Biosensing, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, China
| | - Xue-Feng Yu
- Shenzhen Key Laboratory of Micro/Nano Biosensing, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, China
| | - Zhen Zhao
- Shenzhen Key Laboratory of Micro/Nano Biosensing, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, China.
| | - Wenhua Zhou
- Shenzhen Key Laboratory of Micro/Nano Biosensing, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, China.
| | - Shengyong Geng
- Shenzhen Key Laboratory of Micro/Nano Biosensing, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, China.
| | - Ling Ji
- Department of Laboratory Medicine, Peking University Shenzhen Hospital, Shenzhen, 518055, China.
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12
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Sun Q, Li Z, Liu N, Zhou Y, Zhang F, Li S, Jin P, Xiang R, Le T. Development of a novel fluorescent aptasensor based on the interaction between hexagonal β-Co(OH) 2 nanoplates and nitrogen-doped carbon dots for ultrasensitive detection of patulin. Anal Chim Acta 2023; 1278:341710. [PMID: 37709454 DOI: 10.1016/j.aca.2023.341710] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Revised: 08/01/2023] [Accepted: 08/11/2023] [Indexed: 09/16/2023]
Abstract
There is an urgent need to develop an economical and convenient method for the ultrasensitive detection of patulin (PAT), a mycotoxin that can potentially harm human health when it is found in fruits and their derivatives. In this study, we have developed a novel fluorescent aptasensor that utilizes nitrogen-doped carbon dots (N-CDs) as the fluorescent donor and hexagonal β-Co(OH)2 nanoplates as the fluorescent acceptor. N-CDs were synthesized through the hydrothermal method, resulting in spherical particles with a diameter of 7.6 nm. These nanoparticles exhibited excellent water solubility and displayed a vibrant blue emission at 448 nm when excited at 360 nm. Cobalt hydroxide nanoplates with a beta crystal structure [β-Co(OH)2] were synthesized using a simple co-precipitation method, exhibiting hexagonal plate-like shapes with uniform lateral sizes of 4-5 μm. The fluorescence of N-CDs can be efficiently quenched by hexagonal β-Co(OH)2 nanoplates through Förster resonance energy transfer mechanism. The maximum quenching-recovery capability can be achieved when the concentrations of N-CDs-Apt and β-Co(OH)2 nanoplates are 150 nmol/L and 100 μg/mL, respectively. The pH of the TE buffer should be 8.0, and the incubation time should be 10 min at 25 °C. The developed fluorescent aptasensor displayed an excellent selectivity for PAT determination with a detection limit of 0.57 pg/mL in the linear range of 1.25 pg/mL-100 ng/mL. The rapid PAT determination in fruit juice samples was realized with good recoveries (96.9-105.8%). The developed fluorescent aptasensor based on the interaction between N-CDs and hexagonal β-Co(OH)2 nanoplates can be a promising method for the rapid and ultrasensitive detection of PAT in agricultural products.
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Affiliation(s)
- Qi Sun
- College of Life Sciences, Chongqing Normal University, No.37 Chengzhong Road, Shapingba District, Chongqing, 401331, China.
| | - Zhijuan Li
- College of Life Sciences, Chongqing Normal University, No.37 Chengzhong Road, Shapingba District, Chongqing, 401331, China
| | - Ningxin Liu
- College of Life Sciences, Chongqing Normal University, No.37 Chengzhong Road, Shapingba District, Chongqing, 401331, China
| | - Yuting Zhou
- College of Life Sciences, Chongqing Normal University, No.37 Chengzhong Road, Shapingba District, Chongqing, 401331, China
| | - Fuyan Zhang
- College of Life Sciences, Chongqing Normal University, No.37 Chengzhong Road, Shapingba District, Chongqing, 401331, China
| | - Shuang Li
- College of Life Sciences, Chongqing Normal University, No.37 Chengzhong Road, Shapingba District, Chongqing, 401331, China
| | - Peng Jin
- College of Life Sciences, Chongqing Normal University, No.37 Chengzhong Road, Shapingba District, Chongqing, 401331, China
| | - Rui Xiang
- College of Life Sciences, Chongqing Normal University, No.37 Chengzhong Road, Shapingba District, Chongqing, 401331, China
| | - Tao Le
- College of Life Sciences, Chongqing Normal University, No.37 Chengzhong Road, Shapingba District, Chongqing, 401331, China.
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13
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Lai X, Zhang G, Deng S, Zhang G, Xiao X, He W, Su L, Liu C, Lai W. Triple strategy-enhanced immunochromatographic assay based on APCB and AIEFM for the ultrasensitive detection of AFM1. J Hazard Mater 2023; 460:132438. [PMID: 37666170 DOI: 10.1016/j.jhazmat.2023.132438] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2023] [Revised: 08/08/2023] [Accepted: 08/28/2023] [Indexed: 09/06/2023]
Abstract
Aflatoxin M1 (AFM1) is highly toxic, widely distributed, and difficult to monitor, posing a serious threat to human health. Therefore, a highly sensitive, rapid, convenient, and low-cost detection method must be urgently established. In this study, a triple strategy-enhanced immunochromatographic assay (ICA) was developed to satisfy these detection requirements. First, a turn-on signal output mode of the fluorescence quenching ICA substituted the turn-off mode of the traditional ICA for sensitive response to trace AFM1, with the limit of detection (LOD) reduced by approximately 4.9-fold. Then, a novel Au and polydopamine (PDA) cogrowth chrysanthemum-like blackbody was prepared as the quenching probe to reduce the background signal. This probe combined the excellent properties of Au nanoparticles with PDA. Thus, its fluorescence quenching constant was higher than that of single Au and PDA nanoparticles by 25.8- and 4.9-fold, respectively. Furthermore, an aggregation-induced emission fluorescence microsphere with a 5.7-fold higher relative quantum yield than a commercial fluorescence microsphere was selected as the signal output carrier to improve the signal-to-noise ratio. The integration of the above triple strategies established a 53.4-fold sensitivity-enhanced fluorescence quenching ICA (LOD = 0.9 pg/mL) for detecting AFM1 in milk, providing a strong technical guarantee for the safety monitoring of milk products.
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Affiliation(s)
- Xiaocui Lai
- State Key Laboratory of Food Science and Resources, Nanchang University, Nanchang 330047, China
| | - Ganggang Zhang
- Institute of Microbiology, Jiangxi Academy of Sciences, Nanchang 330096, China
| | - Shengliang Deng
- Institute of Microbiology, Jiangxi Academy of Sciences, Nanchang 330096, China.
| | - Gan Zhang
- State Key Laboratory of Food Science and Resources, Nanchang University, Nanchang 330047, China
| | - Xiaoyue Xiao
- State Key Laboratory of Food Science and Resources, Nanchang University, Nanchang 330047, China
| | - Weihua He
- Institute of Microbiology, Jiangxi Academy of Sciences, Nanchang 330096, China
| | - Liu Su
- Institute of Microbiology, Jiangxi Academy of Sciences, Nanchang 330096, China
| | - Cong Liu
- Institute of Microbiology, Jiangxi Academy of Sciences, Nanchang 330096, China
| | - Weihua Lai
- State Key Laboratory of Food Science and Resources, Nanchang University, Nanchang 330047, China.
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14
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Zhou Q, Wang L, Zheng H, Peng Z, Hu Z, Zhou Y, Wang B. An ultrasensitive MXene-based electrochemical immunosensor for the detection and species identification of archaeological silk microtraces. Biosens Bioelectron 2023; 238:115581. [PMID: 37566940 DOI: 10.1016/j.bios.2023.115581] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2022] [Revised: 08/03/2023] [Accepted: 08/06/2023] [Indexed: 08/13/2023]
Abstract
The origin and dissemination of silk have been hotly debated in the field of archaeology, and the key to resolving this controversy lies in the detection and species identification of ancient silk microtraces. Herein, a taxonomically specific anti-fibroin monoclonal antibody was successfully prepared and a layer-by-layer self assembly electrochemical immunosensor was innovatively proposed for detecting silk traces based on flexible carbon cloth. The immunosensor possessed a broad linear range of 10-2-103 ng mL-1 and a detection limit of 2.15 pg mL-1 for the ultrasensitive detection of Bombyx mori silk traces. In addition, the elaborate immunosensor exhibited satisfactory high specificity, storage stability and reproducibility. In particular, the qualitative and quantitative performance of the immunosensor was excellent in the analysis of archaeological samples. Therefore, this work demonstrates that the proposed method not only provides a reliable analytical tool for exploring the origin and spread of archaeological silk, but also improves our understanding of how to use emerging materials like two-dimensional titanium carbide to creat innovative biosensors.
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Affiliation(s)
- Qingqing Zhou
- Key Laboratory of Advanced Textile Materials and Manufacturing Technology, Ministry of Education, Zhejiang Sci-Tech University, Hangzhou, 310018, China
| | - Lin Wang
- Key Laboratory of Advanced Textile Materials and Manufacturing Technology, Ministry of Education, Zhejiang Sci-Tech University, Hangzhou, 310018, China
| | - Hailing Zheng
- Key Scientific Research Base of Textile Conservation, State Administration for Cultural Heritage, China National Silk Museum, Hangzhou, 310002, China
| | - Zhiqin Peng
- Institute of Textile Conservation, Zhejiang Sci-Tech University, Hangzhou, 310018, China
| | - Zhiwen Hu
- Institute of Textile Conservation, Zhejiang Sci-Tech University, Hangzhou, 310018, China
| | - Yang Zhou
- Key Scientific Research Base of Textile Conservation, State Administration for Cultural Heritage, China National Silk Museum, Hangzhou, 310002, China.
| | - Bing Wang
- Key Laboratory of Advanced Textile Materials and Manufacturing Technology, Ministry of Education, Zhejiang Sci-Tech University, Hangzhou, 310018, China.
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15
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Meng X, Hang T, Zhou H, Zhang Z, Li C. Fabrication and nano-engineering of non-/noble metal-coupled plasmonic heterostructures for ultrasensitive photoelectrochemical immunoassays. Anal Chim Acta 2023; 1271:341472. [PMID: 37328251 DOI: 10.1016/j.aca.2023.341472] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2023] [Revised: 05/28/2023] [Accepted: 06/02/2023] [Indexed: 06/18/2023]
Abstract
To achieve reliable and ultrasensitive detection for disease markers in PEC bioanalysis, constructing and nano-engineering of ideal photoelectrodes and signal transduction strategies are of vital importance. Herein, a non-/noble metal coupled plasmonic nanostructure (TiO2/r-STO/Au) was tactically designed with high-efficient PEC performance. Evidenced by the DFT and FDTD calculations, the reduced SrTiO3 (r-STO) was found to support the localized surface plasmon resonance due to the sufficiently increased and delocalized local charge in r-STO. Under the synergistic coupling of plasmonic r-STO and AuNPs, the PEC performance of TiO2/r-STO/Au was found remarkably promoted with reduced onset potential. This merit supported TiO2/r-STO/Au as a self-powered immunoassay via a proposed oxygen-evolution-reaction mediated signal transduction strategy. With the increase of the target biomolecules (PSA), the catalytic active sites of TiO2/r-STO/Au would be blocked and result in the decrease of the oxygen evaluation reaction. Under optimal conditions, the immunoassays exhibited an excellent detection performance with a LOD as low as 1.1 fg/mL. This work proposed a new type of plasmonic nanomaterial for ultrasensitive PEC bioanalysis.
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Affiliation(s)
- Xingxing Meng
- Anhui Laboratory of Functional Coordinated Complexes for Materials Chemistry and Application, School of Chemical and Environmental Engineering, Anhui Polytechnic University, Wuhu, 241000, PR China
| | - Tianxiang Hang
- Anhui Laboratory of Functional Coordinated Complexes for Materials Chemistry and Application, School of Chemical and Environmental Engineering, Anhui Polytechnic University, Wuhu, 241000, PR China
| | - Hui Zhou
- Anhui Laboratory of Functional Coordinated Complexes for Materials Chemistry and Application, School of Chemical and Environmental Engineering, Anhui Polytechnic University, Wuhu, 241000, PR China
| | - Zongrui Zhang
- Anhui Laboratory of Functional Coordinated Complexes for Materials Chemistry and Application, School of Chemical and Environmental Engineering, Anhui Polytechnic University, Wuhu, 241000, PR China
| | - Chuanping Li
- Anhui Laboratory of Functional Coordinated Complexes for Materials Chemistry and Application, School of Chemical and Environmental Engineering, Anhui Polytechnic University, Wuhu, 241000, PR China; State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 5625 Renmin Street, Changchun, 130022, PR China.
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16
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Hou Y, Chen R, Wang Z, Lu R, Wang Y, Ren S, Li S, Wang Y, Han T, Yang S, Zhou H, Gao Z. Bio-barcode assay: A useful technology for ultrasensitive and logic-controlled specific detection in food safety: A review. Anal Chim Acta 2023; 1267:341351. [PMID: 37257972 DOI: 10.1016/j.aca.2023.341351] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2022] [Revised: 05/08/2023] [Accepted: 05/09/2023] [Indexed: 06/02/2023]
Abstract
Food safety is one of the greatest public health challenges. Developing ultrasensitive detection methods for analytes at ultra-trace levels is, therefore, essential. In recent years, the bio-barcode assay (BCA) has emerged as an effective ultrasensitive detection strategy that is based on the indirect amplification of various DNA probes. This review systematically summarizes the progress of fluorescence, PCR, and colorimetry-based BCA methods for the detection of various contaminants, including pathogenic bacteria, toxins, pesticides, antibiotics, and other chemical substances in food in over 120 research papers. Current challenges, including long experimental times and strict storage conditions, and the prospects for the application of BCA in biomedicine and environmental analyses, have also been discussed herein.
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Affiliation(s)
- Yue Hou
- The Education Ministry Key Lab of Resource Chemistry and Shanghai Key Laboratory of Rare Earth Functional Materials, Shanghai Normal University, Shanghai, 200234, People's Republic of China; Institute of Environmental and Operational Medicine, Academy of Military Medical Sciences, Academy of Military Sciences, Tianjin, 300050, People's Republic of China
| | - Ruipeng Chen
- Institute of Environmental and Operational Medicine, Academy of Military Medical Sciences, Academy of Military Sciences, Tianjin, 300050, People's Republic of China
| | - Zhiguang Wang
- The Education Ministry Key Lab of Resource Chemistry and Shanghai Key Laboratory of Rare Earth Functional Materials, Shanghai Normal University, Shanghai, 200234, People's Republic of China; Institute of Environmental and Operational Medicine, Academy of Military Medical Sciences, Academy of Military Sciences, Tianjin, 300050, People's Republic of China
| | - Ran Lu
- Institute of Environmental and Operational Medicine, Academy of Military Medical Sciences, Academy of Military Sciences, Tianjin, 300050, People's Republic of China
| | - Yonghui Wang
- Institute of Environmental and Operational Medicine, Academy of Military Medical Sciences, Academy of Military Sciences, Tianjin, 300050, People's Republic of China
| | - Shuyue Ren
- Institute of Environmental and Operational Medicine, Academy of Military Medical Sciences, Academy of Military Sciences, Tianjin, 300050, People's Republic of China
| | - Shuang Li
- Institute of Environmental and Operational Medicine, Academy of Military Medical Sciences, Academy of Military Sciences, Tianjin, 300050, People's Republic of China
| | - Yu Wang
- Institute of Environmental and Operational Medicine, Academy of Military Medical Sciences, Academy of Military Sciences, Tianjin, 300050, People's Republic of China
| | - Tie Han
- Institute of Environmental and Operational Medicine, Academy of Military Medical Sciences, Academy of Military Sciences, Tianjin, 300050, People's Republic of China
| | - Shiping Yang
- The Education Ministry Key Lab of Resource Chemistry and Shanghai Key Laboratory of Rare Earth Functional Materials, Shanghai Normal University, Shanghai, 200234, People's Republic of China.
| | - Huanying Zhou
- Institute of Environmental and Operational Medicine, Academy of Military Medical Sciences, Academy of Military Sciences, Tianjin, 300050, People's Republic of China.
| | - Zhixian Gao
- Institute of Environmental and Operational Medicine, Academy of Military Medical Sciences, Academy of Military Sciences, Tianjin, 300050, People's Republic of China.
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17
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Tan J, Dai Z, Zhou K, Zhang L, He M, Tan Y, Zhou X. An Ultrasensitive and Universal Surface Plasmonic Biosensor for Detection of Micropollutants in Aquatic Environments. Environ Sci Technol 2023. [PMID: 37199705 DOI: 10.1021/acs.est.3c01328] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
Simple yet ultrasensitive and accurate quantification of a variety of analytical targets by virtue of a universal sensing device holds promise to revolutionize environmental monitoring, medical diagnostics, and food safety. Here, we propose a novel optical surface plasmon resonance (SPR) system in which the frequency-shifted light of different polarizations returned the laser cavity to stimulate laser heterodyne feedback interferometry (LHFI), hence amplifying the reflectivity change caused by the refractive index (RI) variations on the gold-coated SPR chip surface. In addition, the s-polarized light was further used as the reference to compensate the noise of the LHFI-amplified SPR system, resulting in nearly 3 orders of magnitude enhancement of RI resolution (5.9 × 10-8 RIU) over the original SPR system (2.0 × 10-5 RIU). By exploiting nucleic acids, antibodies, and receptors as recognition materials, a variety of micropollutants were detected with ultralow detection limits, ranging from a toxic metal ion (Hg2+, 70 ng/L) to a group of commonly occurring biotoxin (microcystins, 3.9 ng microcystin-LR/L) and a class of environmental endocrine disruptors (estrogens, 0.7 ng 17β-estradiol/L). This sensing platform exhibits several distinct characteristics, including dual improvement of sensitivity and stability and common-path optical construction without needing optical alignment, demonstrating a promising avenue toward environmental monitoring.
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Affiliation(s)
- Jisui Tan
- State Key Joint Laboratory of ESPC, School of Environment, Tsinghua University, Beijing 100084, China
| | - Zongren Dai
- State Key Laboratory of Precision Measurement Technology and Instruments, Department of Precision Instrument, Tsinghua University, Beijing 100084, China
| | - Kaiming Zhou
- Aston Institute of Photonic Technologies, Aston University, Birmingham B4 7ET, United Kingdom
| | - Lin Zhang
- Aston Institute of Photonic Technologies, Aston University, Birmingham B4 7ET, United Kingdom
| | - Miao He
- State Key Joint Laboratory of ESPC, School of Environment, Tsinghua University, Beijing 100084, China
| | - Yidong Tan
- State Key Laboratory of Precision Measurement Technology and Instruments, Department of Precision Instrument, Tsinghua University, Beijing 100084, China
| | - Xiaohong Zhou
- State Key Joint Laboratory of ESPC, School of Environment, Tsinghua University, Beijing 100084, China
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18
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Ding Z, Wei Y, Liu X, Han F, Xu Z. Substantial dimerized G-quadruplex signal units engineered by cutting-mediated exponential rolling circle amplification for ultrasensitive and label-free detection of exosomes. Anal Chim Acta 2023; 1253:341098. [PMID: 36965991 DOI: 10.1016/j.aca.2023.341098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2022] [Revised: 03/13/2023] [Accepted: 03/14/2023] [Indexed: 03/17/2023]
Abstract
Sensitive and accurate determination of tumor-derived exosomes from complicated biofluids is an important prerequisite for early tumor diagnosis through exosome-based liquid biopsy. Herein, a label-free fluorescence immunoassay protocol for ultrasensitive detection of exosomes was developed by engineering substantial dimerized guanine-quadruplex (Dimer-G4) signal units via in situ cutting-mediated exponential rolling circle amplification (CM-ERCA). First, exosomes were captured and enriched via immunomagnetic separation. Then, molecular recognition was built by the formation of antibody-aptamer sandwich immunocomplex through the specific binding of the designed aptamer-primers with the targeted exosomes. The accuracy of exosome detection was significantly improved by the specific recognition of two typical exosomal protein markers simultaneously. Eventually, in situ CM-ERCA was triggered by a perfect match between the multifunctional circular DNA template and the aptamer-primer on exosomal surface. Amplicons of CM-ERCA loaded with Dimer-G4 were exponentially accumulated during continuous cyclic amplification, dramatically lighting up the thioflavin T (ThT) and generating substantial Dimer-G4 signal units. As a result, ultrasensitive detection of exosomes with the detection limit down to 2.4 × 102 particles/mL was achieved due to the fluorescence enhancement of substantial Dimer-G4 signal units, which is ahead of most of available fluorescence-based methods reported currently. In addition, the intense fluorescence emission and favorable anti-interference of the proposed immunoassay supports identification of exosomes direct in human serums, overcoming the limitations of conventional G4/ThT in serum analysis and revealing its potential for exosome-based liquid biopsy.
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Affiliation(s)
- Ziling Ding
- Research Center for Analytical Sciences, Northeastern University, 110819, Shenyang, China
| | - Yunyun Wei
- Research Center for Analytical Sciences, Northeastern University, 110819, Shenyang, China
| | - Xiaopeng Liu
- Research Center for Analytical Sciences, Northeastern University, 110819, Shenyang, China
| | - Fei Han
- Research Center for Analytical Sciences, Northeastern University, 110819, Shenyang, China
| | - Zhangrun Xu
- Research Center for Analytical Sciences, Northeastern University, 110819, Shenyang, China.
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19
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Dong J, Li G, Xia L, Li H. Microtrap-assisted microfluidic magnetic separation and concentration for ultrasensitive immunoassays of biomarkers. J Chromatogr A 2023; 1699:464021. [PMID: 37126879 DOI: 10.1016/j.chroma.2023.464021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2023] [Revised: 04/07/2023] [Accepted: 04/21/2023] [Indexed: 05/03/2023]
Abstract
Precise and accurate quantitation of important biomarkers is significant, especially in early-stage diseases diagnosis. To realized effective biosample preparation and trace-level biomarker detection, a microtrap-assisted microfluidic magnetic immunoassays (μMI) method was developed in this work. A microtrap was fabricated inside the straight microchannel of μMI device to help magnetic separation and concentration of immunocomplexes. These immunocomplexes were enriched in microtrap of μMI device to accomplish selective and sensitive biomarker detection. Horseradish peroxidase-labeled magnetic beads were employed to evaluate assay feasibility and microtrap effect on assay sensitivity. The microtrap-assisted μMI was then applied for model biomarkers detection. The limits of detection of μMI were 0.025 pg/mL for monocyte chemoattractant protein-1 (MCP-1) and 0.021 pg/mL for matrix metalloproteinase-9 (MMP-9), which corresponded up to 2014-fold sensitivity improvement compared to their standard microwell enzyme-linked immunosorbent assay (ELISA) results. In addition, the selectivity and reproducibility of microtrap-assisted μMI were confirmed. In clinical serum sample analysis, recoveries of 91.3%-106.7% with relative standard deviations less than 6.1% were obtained for MCP-1 and MMP-9, and method accuracy was verified by commercial ELISA kit. The developed μMI can accomplish ultratrace biomarker detection offering practical tool for laboratorial and clinical research.
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Affiliation(s)
- Jianwei Dong
- School of Chemistry, Sun Yat-sen University, Guangzhou, 510006, China
| | - Gongke Li
- School of Chemistry, Sun Yat-sen University, Guangzhou, 510006, China.
| | - Ling Xia
- School of Chemistry, Sun Yat-sen University, Guangzhou, 510006, China.
| | - He Li
- School of Chemistry, South China Normal University, Guangzhou 510006, China
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20
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Aymerich J, Ferrer-Vilanova A, Cisneros-Fernández J, Escudé-Pujol R, Guirado G, Terés L, Dei M, Muñoz-Berbel X, Serra-Graells F. Ultrasensitive bacterial sensing using a disposable all-in-one amperometric platform with self-noise cancellation. Biosens Bioelectron 2023; 234:115342. [PMID: 37141829 DOI: 10.1016/j.bios.2023.115342] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2022] [Revised: 04/16/2023] [Accepted: 04/20/2023] [Indexed: 05/06/2023]
Abstract
The early detection of very low bacterial concentrations is key to minimize the healthcare and safety issues associated with microbial infections, food poisoning or water pollution. In amperometric integrated circuits for electrochemical sensors, flicker noise is still the main bottleneck to achieve ultrasensitive detection with small footprint, cost-effective and ultra-low power instrumentation. Current strategies rely on autozeroing or chopper stabilization causing negative impacts on chip size and power consumption. This work presents a 27-μW potentiostatic-amperometric Delta-Sigma modulator able to cancel its own flicker noise and provide a 4-fold improvement in the limit of detection. The 2.3-mm2 all-in-one CMOS integrated circuit is glued to an inkjet-printed electrochemical sensor. Measurements show that the limit of detection is 15 pArms, the extended dynamic range reaches 110 dB and linearity is R2 = 0.998. The disposable device is able to detect, in less than 1h, live bacterial concentrations as low as 102 CFU/mL from a 50-μL droplet sample, which is equivalent to 5 microorganisms.
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Affiliation(s)
- Joan Aymerich
- Instituto de Microelectrónica de Barcelona, IMB-CNM(CSIC), Spain
| | | | | | | | - Gonzalo Guirado
- Department of Chemistry, Universitat Autònoma de Barcelona, Spain
| | - Lluís Terés
- Instituto de Microelectrónica de Barcelona, IMB-CNM(CSIC), Spain; Department of Microelectronics and Electronic Systems, Universitat Autònoma de Barcelona, Spain
| | - Michele Dei
- Instituto de Microelectrónica de Barcelona, IMB-CNM(CSIC), Spain; Department of Information Engineering, Università di Pisa, Italy
| | | | - Francisco Serra-Graells
- Instituto de Microelectrónica de Barcelona, IMB-CNM(CSIC), Spain; Department of Microelectronics and Electronic Systems, Universitat Autònoma de Barcelona, Spain.
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Kuang X, Wei L, Huang Y, Ji M, Tang Y, Wei B, Yang S, Lai D, Xu H. Development of a digital anti-Müllerian hormone immunoassay: ultrasensitive, accurate and practical strategy for reduced ovarian reserve monitoring and assessment. Talanta 2023; 253:123970. [PMID: 36206626 DOI: 10.1016/j.talanta.2022.123970] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2022] [Revised: 09/18/2022] [Accepted: 09/24/2022] [Indexed: 12/13/2022]
Abstract
Anti-Müllerian hormone (AMH) is an ideal biomarker for the assessment of ovarian reserve. However, its application in determining ovarian reserve reduction is restricted due to the low sensitivity of existing AMH assays. Herein, a homebrew ultrasensitive digital AMH assay (UD-AMH) was established based on a single-molecule array (SiMoA, HD-X platform), and the analytical performance of UD-AMH was evaluated systematically. The limit of detection (LoD) and limit of quantitation (LoQ) of UD-AMH were 0.13 and 0.14 pg/mL, respectively, which is approximately 100-fold higher than that of the current reported general clinical AMH assay. A comparison study showed a high correlation, with r = 0.988 for the Beckman Access AMH assay and r = 0.945 for the Kangrun AMH assay. In addition, we found that the AMH concentrations of premature ovarian insufficiency (POI) patients were very low (2.59 (0.86, 31.79) pg/mL) and similar to those of perimenopausal women (2.37 (0.65, 35.88) pg/mL) but significantly higher than those of menopausal women (0.43 (0.28, 1.17) pg/mL). Furthermore, we observed that the AMH concentration of most hormone therapy (HT) treated POI patients decreased sharply, suggesting that the ovarian reserve of POI patients declines over time even under HT-treatment.
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Affiliation(s)
- Xiaojun Kuang
- School of Biomedical Engineering, Med-X Research Institute, Shanghai Jiao Tong University, Shanghai, China; The International Peace Maternity and Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China; Shanghai Key Laboratory of Embryo Original Diseases, Shanghai, China
| | - Liutong Wei
- The International Peace Maternity and Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China; Shanghai Key Laboratory of Embryo Original Diseases, Shanghai, China
| | - Yuanxin Huang
- The International Peace Maternity and Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China; Shanghai Key Laboratory of Embryo Original Diseases, Shanghai, China
| | - Min Ji
- The International Peace Maternity and Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China; Shanghai Key Laboratory of Embryo Original Diseases, Shanghai, China
| | - Yongzhe Tang
- The International Peace Maternity and Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China; Shanghai Key Laboratory of Embryo Original Diseases, Shanghai, China
| | - Bing Wei
- The International Peace Maternity and Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China; Shanghai Key Laboratory of Embryo Original Diseases, Shanghai, China
| | - Shuang Yang
- Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Dongmei Lai
- The International Peace Maternity and Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China; Shanghai Key Laboratory of Embryo Original Diseases, Shanghai, China.
| | - Hong Xu
- School of Biomedical Engineering, Med-X Research Institute, Shanghai Jiao Tong University, Shanghai, China.
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22
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Cai Q, Wang F, Ge J, Xu Z, Li M, Xu H, Wang H. G-wire-based self-quenched fluorescence probe combining with target-activated isothermal cascade amplification for ultrasensitive microRNA detection. Spectrochim Acta A Mol Biomol Spectrosc 2022; 281:121605. [PMID: 35843057 DOI: 10.1016/j.saa.2022.121605] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/12/2022] [Revised: 06/11/2022] [Accepted: 07/05/2022] [Indexed: 06/15/2023]
Abstract
Herein, we reported the G-wire-based self-quenched fluorescence probe and its application in ultrasensitive microRNA (miRNA) detection by combining with target-activated isothermal cascade amplification. The terminal-single-fluorescein (FAM)-labeled G-rich oligonucletides self-assembled into G-wire nanostructures (G-wires) with K+ and Mg2+. Thereafter, the G-wires brought terminal-labeled FAM into close proximity, as a result, the self-quenched signal probe formed. Besides, when there was the target miRNA, target-activated isothermal cascade amplification converted miRNA into the copious trigger DNA. After hybridization between trigger DNA and the self-quenched probe, the G-wires were splited and forced the apart of proximate FAM, and then the self-quenched probe displayed an "on" mechanism. Therefore, the approach gave a limit of detection (LOM) of 0.82 aM to miRNA-21 and could be implemented within a wide linear range of 2 aM to 2 nM. This approach was able to distinguish the single-mismatched miRNA-21, which was selective and sensitive in detecting human spiked serum samples.
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Affiliation(s)
- Qingyou Cai
- School of Teacher Education, Huzhou University, Huzhou, Zhejiang 313000, PR China
| | - Fanfan Wang
- School of Science and Engineering, Huzhou College, Huzhou, Zhejiang 313000, PR China
| | - Jingying Ge
- School of Science and Engineering, Huzhou College, Huzhou, Zhejiang 313000, PR China
| | - Zhiguo Xu
- School of Science and Engineering, Huzhou College, Huzhou, Zhejiang 313000, PR China
| | - Mei Li
- School of Science and Engineering, Huzhou College, Huzhou, Zhejiang 313000, PR China; Huzhou Key Laboratory of Medical and Environmental Applications Technologies, School of Life Sciences, Huzhou University, Zhejiang 313000, PR China.
| | - Hui Xu
- School of Science and Engineering, Huzhou College, Huzhou, Zhejiang 313000, PR China; Huzhou Key Laboratory of Medical and Environmental Applications Technologies, School of Life Sciences, Huzhou University, Zhejiang 313000, PR China
| | - Hua Wang
- Huzhou Key Laboratory of Medical and Environmental Applications Technologies, School of Life Sciences, Huzhou University, Zhejiang 313000, PR China
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23
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Zhang Y, Chen Y, Lei Y, Lu H, Wang X, Zhang Z, Li J. Tailoring diameters of carbon nanofibers with optimal mesopores to remarkably promote hemin adsorption toward ultrasensitive detection of bisphenol A. Food Chem 2022; 383:132628. [PMID: 35413765 DOI: 10.1016/j.foodchem.2022.132628] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2021] [Revised: 01/24/2022] [Accepted: 03/02/2022] [Indexed: 11/16/2022]
Abstract
Bisphenol A (BPA) is a worldwide used endocrine disrupting chemical that can migration from food containers and packaging, resulting in bioaccumulation of BPA in humans and causing adverse health effects. Porous electrodes have been proved with large surface areas and high sensing abilities in electrochemical detection of BPA. However, how to tailor the pore sizes to further improve the sensing performance is still a great challenge. Here, we delicately tailored the diameters of carbon nanofibers (CNFs) by adjusting electrospinning parameters to have optimal mesopore structure for strong adsorption of hemin that has been demonstrated with high electrocatalytic activity for BPA sensing. Benefiting from the optimal mesopores structure of CNFs and the synergistic effect of hemin and CNFs, this hemin@CNFs based sensor achieves an ultrahigh sensitivity of 40.97 μA cm-2 μM-1, a low detection limit of 3.1 nM and satisfactory recoveries from 90.2% to 104.2% in the direct detection of BPA in liquors. This work offers a promising sensing platform for ultrasensitive monitoring of BPA.
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Affiliation(s)
- Yuhuan Zhang
- College of Food Engineering and Nutritional Science, Shaanxi Normal University, Xi'an 710119, China; University Key Laboratory of Food Processing Byproducts for Advanced Development and High Value Utilization, Xi'an 710119, China.
| | - Yue Chen
- Institute for Clean Energy and Advanced Materials, School of Materials and Energy, Southwest University, Chongqing 400715, China
| | - Yanan Lei
- College of Food Engineering and Nutritional Science, Shaanxi Normal University, Xi'an 710119, China; University Key Laboratory of Food Processing Byproducts for Advanced Development and High Value Utilization, Xi'an 710119, China
| | - Hao Lu
- College of Food Engineering and Nutritional Science, Shaanxi Normal University, Xi'an 710119, China; University Key Laboratory of Food Processing Byproducts for Advanced Development and High Value Utilization, Xi'an 710119, China
| | - Xingyu Wang
- College of Food Engineering and Nutritional Science, Shaanxi Normal University, Xi'an 710119, China
| | - Zhong Zhang
- College of Food Engineering and Nutritional Science, Shaanxi Normal University, Xi'an 710119, China
| | - Jianke Li
- College of Food Engineering and Nutritional Science, Shaanxi Normal University, Xi'an 710119, China; University Key Laboratory of Food Processing Byproducts for Advanced Development and High Value Utilization, Xi'an 710119, China.
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24
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Guo G, Wang T, Ding X, Wang H, Wu Q, Zhang Z, Ding S, Li S, Li J. Fluorescent lanthanide metal-organic framework for rapid and ultrasensitive detection of methcathinone in human urine. Talanta 2022; 249:123663. [PMID: 35704956 DOI: 10.1016/j.talanta.2022.123663] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2022] [Revised: 06/02/2022] [Accepted: 06/05/2022] [Indexed: 10/31/2022]
Abstract
Methcathinone (MC), a new and easily abused psychoactive substance, not only has a rigorous impact on public security, but also endangers people's health. Herein, novel fluorescent europium metal-organic frameworks (Eu-MOF) were synthesized through a facile one-step solvothermal strategy and utilized as an effective "signal-off" sensing platform for rapid and ultrasensitive detection of MC. The as-fabricated Eu-MOF possessed superior optical properties encompassing bright red fluorescence and good photostability. In the presence of MC, the fluorescence of Eu-MOF was significantly quenched, mainly attributing to the internal filtering effect between Eu-MOF and MC. The fluorescent signal showed high selectivity for MC over other illicit drugs, and offered two linear ranges of 1-100 ng/mL and 100-4000 ng/mL with a detection limit of 0.40 ng/mL. Strikingly, the nanoprobe could be applied for the assay of MC in human urine with satisfactory recoveries and acceptable results. This work provides a promising route for MC detection to effectively control illicit drug pandemic worldwide.
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Affiliation(s)
- Gaoxian Guo
- Department of Forensic Medicine, Faculty of Basic Medical Sciences, Chongqing Medical University, Chongqing, 400016, China
| | - Ting Wang
- College of Pharmacy, Chongqing Medical University, Chongqing, 400016, China
| | - Xuan Ding
- Department of Forensic Medicine, Faculty of Basic Medical Sciences, Chongqing Medical University, Chongqing, 400016, China
| | - Hanting Wang
- Department of Forensic Medicine, Faculty of Basic Medical Sciences, Chongqing Medical University, Chongqing, 400016, China
| | - Qilong Wu
- Department of Forensic Medicine, Faculty of Basic Medical Sciences, Chongqing Medical University, Chongqing, 400016, China
| | - Zhengwei Zhang
- College of Pharmacy, Chongqing Medical University, Chongqing, 400016, China
| | - Shijia Ding
- Key Laboratory of Clinical Laboratory Diagnostics (Ministry of Education), College of Laboratory Medicine, Chongqing Medical University, Chongqing, 400016, China
| | - Siqiao Li
- Department of Forensic Medicine, Faculty of Basic Medical Sciences, Chongqing Medical University, Chongqing, 400016, China.
| | - Jianbo Li
- Department of Forensic Medicine, Faculty of Basic Medical Sciences, Chongqing Medical University, Chongqing, 400016, China.
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25
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Huang J, Cheng W, Li Y. 3D carbonized wood-based integrated electrochemical immunosensor for ultrasensitive detection of procalcitonin antigen. Talanta 2022; 238:122991. [PMID: 34857324 DOI: 10.1016/j.talanta.2021.122991] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2021] [Revised: 10/18/2021] [Accepted: 10/20/2021] [Indexed: 11/28/2022]
Abstract
This work presents a novel 3D carbonized wood-based integrated electrochemical immunosensor for ultrasensitive detection of procalcitonin (PCT) antigen at picogram level, achieving a wide linear detection range for PCT concentrations range from 0.05 to 90 pg mL-1 with a low detection limit of 0.014 pg mL-1 (S/N = 3), outperforming the previous reports. 3D carbonized wood as a new immunosensor matrix is used for electrochemical PCT biosensing, improving the stability of electrode and overcoming the disadvantages of traditional glassy carbon electrode (GCE). It obtained an excellent detection result, due to it has abundant mutual crisscross microchannels that promote the reactants and electrons transfer, greatly amplify the current signal. This novel sandwich-type electrochemical immunosensor is composed of 3D carbonized wood, carboxylic multi-walled carbon nanotube (cMWCNT), Au@Co3O4 core-shell nanosphere and Au/single layer nitrogen-doped graphene (Au/SL-NG), when it is applied for PCT detection in real clinical samples, it exhibits high accuracy same as enzyme-linked immunosorbent assay (ELISA) method.
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Affiliation(s)
- Jianzhi Huang
- School of Environment and Civil Engineering, Dongguan University of Technology, Dongguan, Guangdong, 523808, People's Republic of China.
| | - Wenxue Cheng
- School of Environment and Civil Engineering, Dongguan University of Technology, Dongguan, Guangdong, 523808, People's Republic of China
| | - Yanliang Li
- School of Environment and Civil Engineering, Dongguan University of Technology, Dongguan, Guangdong, 523808, People's Republic of China.
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26
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Liu S, Huo Y, Fan L, Ning B, Sun T, Gao Z. Rapid and ultrasensitive detection of DNA and microRNA-21 using a zirconium porphyrin metal-organic framework-based switch fluorescence biosensor. Anal Chim Acta 2022; 1192:339340. [PMID: 35057960 DOI: 10.1016/j.aca.2021.339340] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Revised: 10/19/2021] [Accepted: 11/28/2021] [Indexed: 01/15/2023]
Abstract
Sensitive and accurate detection of nucleic acid biomarkers is critical for early cancer diagnosis, disease monitoring, and clinical treatment. In this study, we developed a switch fluorescence biosensor for simple and high-efficient detection of nucleic acid biomarkers using 6-carboxyfluorescein (FAM)-modified single-stranded DNA (ssDNA) probes (FAM-P1/P2), and zirconium porphyrin metal-organic framework nanoparticles (ZrMOF) acted as fluorescence quencher. FAM-P1/P2 probes were adsorbed on ZrMOF surface because of π-π stacking, hydrogen bonding, and electrostatic interactions. Fluorescence quenching event occurred by fluorescence resonance energy transfer (FRET) and photo-induced electron transfer (PET) processes, thereby achieving the "off" fluorescence status. Once the specific binding was formed between the fluorescence probes and the targets, the rigid double-stranded DNA (dsDNA) structures were released from ZrMOF surface, resulting in the recovery of fluorescence and the "on" status. Because of the superior adsorption ability of ZrMOF toward ssDNA than dsDNA, the switch of fluorescence signals from "off" to "on" allowed rapid and ultrasensitive detection of ssDNA (T1) and microRNA-21 (miR-21) within 30 min. The limit of detection (signal-to-noise ratio = 3) for T1 and miR-21 were 2 fM and 11 aM, respectively. Moreover, the proposed strategy was very simple as it worked by the facile adsorption-quenching-recovery mechanism without difficult and complicated immobilization processes. Also, this biosensor showed an excellent analytical performance in the detection of miR-21 in human serum samples. Therefore, this biosensor might be considered a potential tool for the detection of DNA and miRNA biomarkers in clinical samples.
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Affiliation(s)
- Sha Liu
- Tianjin Key Laboratory of Risk Assessment and Control Technology for Environment and Food Safety, Tianjin Institute of Environmental and Operational Medicine, Tianjin, 300050, China.
| | - Yapeng Huo
- Tianjin Key Laboratory of Risk Assessment and Control Technology for Environment and Food Safety, Tianjin Institute of Environmental and Operational Medicine, Tianjin, 300050, China
| | - Longxing Fan
- Tianjin Key Laboratory of Risk Assessment and Control Technology for Environment and Food Safety, Tianjin Institute of Environmental and Operational Medicine, Tianjin, 300050, China
| | - Baoan Ning
- Tianjin Key Laboratory of Risk Assessment and Control Technology for Environment and Food Safety, Tianjin Institute of Environmental and Operational Medicine, Tianjin, 300050, China
| | - Tieqiang Sun
- Tianjin Key Laboratory of Risk Assessment and Control Technology for Environment and Food Safety, Tianjin Institute of Environmental and Operational Medicine, Tianjin, 300050, China.
| | - Zhixian Gao
- Tianjin Key Laboratory of Risk Assessment and Control Technology for Environment and Food Safety, Tianjin Institute of Environmental and Operational Medicine, Tianjin, 300050, China.
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Liu B, Zheng S, Li H, Xu J, Tang H, Wang Y, Wang Y, Sun F, Zhao X. Ultrasensitive and facile detection of multiple trace antibiotics with magnetic nanoparticles and core-shell nanostar SERS nanotags. Talanta 2022; 237:122955. [PMID: 34736680 DOI: 10.1016/j.talanta.2021.122955] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2021] [Revised: 10/07/2021] [Accepted: 10/08/2021] [Indexed: 01/13/2023]
Abstract
Ultrasensitive, multiplex, rapid, and accurate quantitative determination of trace antibiotics remains a challenging issue, which is of importance to public health and safety. Herein, we presented a multiplex strategy based on magnetic nanoparticles and surface-enhanced Raman scattering (SERS) nanotags for simultaneous detection of chloramphenicol (CAP) and tetracycline (TTC). In practice, SERS nanotags based on Raman reporter probes (RRPs) encoded gold-silver core-shell nanostars were used as detection labels for identifying different types of antibiotics, and the magnetic nanoparticles could be separated simply by magnetic force, which significantly improves the detection efficiency, reduces the analysis cost, and simplifies the operation. Our results demonstrate that the as-proposed assay possesses the capacities of high sensitivity and multiplexing with the limits of detection (LODs) for CAP and TTC of 159.49 and 294.12 fg mL-1, respectively, as well as good stability and reproducibility, and high selectivity and reliability. We believe that this strategy holds a great promising perspective for the detection of trace amounts of antibiotics in microsystems, which is crucial to our life. Additionally, the assay can also be used to detect other illegal additives by altering the appropriate antibodies or aptamers.
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Affiliation(s)
- Bing Liu
- Medical School, Institute of Reproductive Medicine, Nantong University, Nantong, 226001, China.
| | - Shiya Zheng
- Zhongda Hospital, School of Medicine, Southeast University, Nanjing, 210009, China
| | - Haitao Li
- Medical School, Institute of Reproductive Medicine, Nantong University, Nantong, 226001, China
| | - Junjie Xu
- Medical School, Institute of Reproductive Medicine, Nantong University, Nantong, 226001, China
| | - Hanyu Tang
- Medical School, Institute of Reproductive Medicine, Nantong University, Nantong, 226001, China
| | - Yi Wang
- Pharmaceutical Informatics Institute, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, 310058, China; Innovation Center in Zhejiang University, State Key Laboratory of Component-Based Chinese Medicine, Hangzhou, 310058, China
| | - Yingchao Wang
- Innovation Institute for Artificial Intelligence in Medicine of Zhejiang University, Hangzhou, 310018, China
| | - Fei Sun
- Medical School, Institute of Reproductive Medicine, Nantong University, Nantong, 226001, China.
| | - Xiangwei Zhao
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing, 210096, China; Southeast University Shenzhen Research Institute, Shenzhen, 518000, China.
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28
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Favole A, Mazza M, D'Angelo A, Lombardi G, Palmitessa C, Dell'Atti L, Cagnotti G, Berrone E, Gallo M, Avanzato T, Messana E, Masoero L, Acutis PL, Meloni D, Cardone F, Caramelli M, Casalone C, Corona C. RT-QuIC detection of pathological prion protein in subclinical goats following experimental oral transmission of L-type BSE. BMC Res Notes 2021; 14:442. [PMID: 34876215 PMCID: PMC8650279 DOI: 10.1186/s13104-021-05859-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2021] [Accepted: 11/23/2021] [Indexed: 11/20/2022] Open
Abstract
Objective The spread of bovine spongiform encephalopathy (BSE) agent to small ruminants is still a major issue in the surveillance of transmissible spongiform encephalopathies (TSEs). L-type bovine spongiform encephalopathy (L-BSE) is an atypical form of BSE with an unknown zoonotic potential that is transmissible to cattle and small ruminants. Our current knowledge of bovine atypical prion strains in sheep and goat relies only on experimental transmission studies by intracranial inoculation. To assess oral susceptibility of goats to L-BSE, we orally inoculated five goats with cattle L-BSE brain homogenates and investigated pathogenic prion protein (PrPsc) distribution by an ultrasensitive in vitro conversion assay known as Real-Time Quaking Induced Conversion (RT-QuIC). Results Despite a prolonged observation period of 80 months, all these animals and the uninfected controls did not develop clinical signs referable to TSEs and tested negative by standard diagnostics. Otherwise, RT-QuIC analysis showed seeding activity in five out of five examined brain samples. PrPsc accumulation was also detected in spinal cord and lymphoreticular system. These results indicate that caprine species are susceptible to L-BSE by oral transmission and that ultrasensitive prion tests deserve consideration to improve the potential of current surveillance systems against otherwise undetectable forms of animal prion infections.
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Affiliation(s)
- Alessandra Favole
- S.C. Neuroscienze, Lab. di Neurobiologia Sperimentale, Istituto Zooprofilattico Sperimentale del Piemonte, Liguria e Valle d'Aosta, Via Bologna 148, 10154, Turin, Italy.
| | - Maria Mazza
- S.C. Neuroscienze, Lab. di Neurobiologia Sperimentale, Istituto Zooprofilattico Sperimentale del Piemonte, Liguria e Valle d'Aosta, Via Bologna 148, 10154, Turin, Italy
| | | | - Guerino Lombardi
- Istituto Zooprofilattico Sperimentale della Lombardia e dell'Emilia-Romagna, Brescia, Italy
| | - Claudia Palmitessa
- S.C. Neuroscienze, Lab. di Neurobiologia Sperimentale, Istituto Zooprofilattico Sperimentale del Piemonte, Liguria e Valle d'Aosta, Via Bologna 148, 10154, Turin, Italy
| | - Luana Dell'Atti
- S.C. Neuroscienze, Lab. di Neurobiologia Sperimentale, Istituto Zooprofilattico Sperimentale del Piemonte, Liguria e Valle d'Aosta, Via Bologna 148, 10154, Turin, Italy
| | | | - Elena Berrone
- S.C. Neuroscienze, Lab. di Neurobiologia Sperimentale, Istituto Zooprofilattico Sperimentale del Piemonte, Liguria e Valle d'Aosta, Via Bologna 148, 10154, Turin, Italy
| | - Marina Gallo
- S.C. Neuroscienze, Lab. di Neurobiologia Sperimentale, Istituto Zooprofilattico Sperimentale del Piemonte, Liguria e Valle d'Aosta, Via Bologna 148, 10154, Turin, Italy
| | - Tiziana Avanzato
- S.C. Neuroscienze, Lab. di Neurobiologia Sperimentale, Istituto Zooprofilattico Sperimentale del Piemonte, Liguria e Valle d'Aosta, Via Bologna 148, 10154, Turin, Italy
| | - Erika Messana
- S.C. Neuroscienze, Lab. di Neurobiologia Sperimentale, Istituto Zooprofilattico Sperimentale del Piemonte, Liguria e Valle d'Aosta, Via Bologna 148, 10154, Turin, Italy
| | - Loretta Masoero
- S.C. Neuroscienze, Lab. di Neurobiologia Sperimentale, Istituto Zooprofilattico Sperimentale del Piemonte, Liguria e Valle d'Aosta, Via Bologna 148, 10154, Turin, Italy
| | - Pier Luigi Acutis
- S.C. Neuroscienze, Lab. di Neurobiologia Sperimentale, Istituto Zooprofilattico Sperimentale del Piemonte, Liguria e Valle d'Aosta, Via Bologna 148, 10154, Turin, Italy
| | - Daniela Meloni
- S.C. Neuroscienze, Lab. di Neurobiologia Sperimentale, Istituto Zooprofilattico Sperimentale del Piemonte, Liguria e Valle d'Aosta, Via Bologna 148, 10154, Turin, Italy
| | | | - Maria Caramelli
- S.C. Neuroscienze, Lab. di Neurobiologia Sperimentale, Istituto Zooprofilattico Sperimentale del Piemonte, Liguria e Valle d'Aosta, Via Bologna 148, 10154, Turin, Italy
| | - Cristina Casalone
- S.C. Neuroscienze, Lab. di Neurobiologia Sperimentale, Istituto Zooprofilattico Sperimentale del Piemonte, Liguria e Valle d'Aosta, Via Bologna 148, 10154, Turin, Italy
| | - Cristiano Corona
- S.C. Neuroscienze, Lab. di Neurobiologia Sperimentale, Istituto Zooprofilattico Sperimentale del Piemonte, Liguria e Valle d'Aosta, Via Bologna 148, 10154, Turin, Italy.
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Liu JL, Ma YC, Yang T, Hu R, Yang YH. A single nucleotide polymorphism electrochemical sensor based on DNA-functionalized Cd-MOFs-74 as cascade signal amplification probes. Mikrochim Acta 2021; 188:266. [PMID: 34291388 DOI: 10.1007/s00604-021-04924-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2021] [Accepted: 07/02/2021] [Indexed: 12/30/2022]
Abstract
An ultrasensitive electrochemical sensor has been constructed for the detection of single nucleotide polymorphisms (SNPs) based on DNA-functionalized Cd-MOFs-74 as cascade signal amplification probe under enzyme-free conditions. Interestingly, the introduction of an auxiliary probe did not disturb the detection of SNP targets, but could bind more Cd-MOFs-74 signal elements to enhance the different pulse voltammetry electrochemical signal 2~3 times as compared to sensing system without auxiliary probe, which obviously improves the sensitivity of the proposed sensor. Experimental results taking p53 tumor suppressor gene as SNP model demonstrated that the proposed method can be employed to sensitively and selectively detect target p53 gene fragment with a linear response ranging from 0.01 to 30 pmol/L (detection limit of 6.3 fmol/L) under enzyme-free conditions. Utilizing this strategy, the ultrasensitive SNP electrochemical sensor is a promising tool for the determination of SNPs in biomedicine. Graphical Abstract.
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Affiliation(s)
- Jia Li Liu
- College of Chemistry and Chemical Engineering, Yunnan Normal University, Yunnan, Kunming, 650500, People's Republic of China
| | - Yu Chan Ma
- College of Chemistry and Chemical Engineering, Yunnan Normal University, Yunnan, Kunming, 650500, People's Republic of China
| | - Tong Yang
- College of Chemistry and Chemical Engineering, Yunnan Normal University, Yunnan, Kunming, 650500, People's Republic of China.
| | - Rong Hu
- College of Chemistry and Chemical Engineering, Yunnan Normal University, Yunnan, Kunming, 650500, People's Republic of China.
| | - Yun Hui Yang
- College of Chemistry and Chemical Engineering, Yunnan Normal University, Yunnan, Kunming, 650500, People's Republic of China.
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Abnous K, Danesh NM, Ramezani M, Alibolandi M, Nameghi MA, Zavvar TS, Taghdisi SM. A novel colorimetric aptasensor for ultrasensitive detection of aflatoxin M 1 based on the combination of CRISPR-Cas12a, rolling circle amplification and catalytic activity of gold nanoparticles. Anal Chim Acta 2021; 1165:338549. [PMID: 33975697 DOI: 10.1016/j.aca.2021.338549] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2021] [Revised: 04/03/2021] [Accepted: 04/06/2021] [Indexed: 12/11/2022]
Abstract
Colorimetric approaches have received noticeable attention among sensing methods in view of simplicity and watching the color change of sample by the naked eyes. However, developing colorimetric sensing methods which show high sensitivity is still problematic. Herein, based on CRISPR-Cas12a, rolling circle amplification (RCA) and catalytic activity of gold nanoparticles (AuNPs), a colorimetric aptasensor was introduced for highly sensitive detection of aflatoxin M1 (AFM1). In the presence of AFM1, the CRISPR-Cas12a is inactivated and large single-stranded DNA (ssDNA) structures are formed on the surface of AuNPs following the addition of T4 DNA ligase and phi29 DNA polymerase. So, the sample color remains yellow after addition of 4-nitrophenol. However, no huge DNA structure is observed on the surface of AuNPs in the absence of target because of activation of CRISPR-Cas12a and digestion of primer. So, the color of sample switches to colorless. The results indicated that the biosensor had high selectivity toward AFM1 and the approach achieved a detection limit as low as 0.05 ng/L. In addition, it could sensitively identify AFM1 in the spiked milk samples. Overall, this approach is highly sensitive and does not require sophisticated equipment. Therefore, it maintains promising potential for other mycotoxins detection in real samples by simply replacing the applied sequences.
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Affiliation(s)
- Khalil Abnous
- Pharmaceutical Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran; Department of Medicinal Chemistry, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Noor Mohammad Danesh
- Department of Medicinal Chemistry, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran; Research Institute of Sciences and New Technology, Mashhad, Iran
| | - Mohammad Ramezani
- Pharmaceutical Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Mona Alibolandi
- Pharmaceutical Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Morteza Alinezhad Nameghi
- Pharmaceutical Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Taraneh Sadat Zavvar
- Pharmaceutical Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Seyed Mohammad Taghdisi
- Targeted Drug Delivery Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran; Department of Pharmaceutical Biotechnology, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran.
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31
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Sei K, Wang Q, Tokumura M, Miyake Y, Amagai T. Accurate and ultrasensitive determination of 72 parent and halogenated polycyclic aromatic hydrocarbons in a variety of environmental samples via gas chromatography-triple quadrupole mass spectrometry. Chemosphere 2021; 271:129535. [PMID: 33453482 DOI: 10.1016/j.chemosphere.2021.129535] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/19/2020] [Revised: 12/28/2020] [Accepted: 12/30/2020] [Indexed: 06/12/2023]
Abstract
Polycyclic aromatic hydrocarbons (PAHs) and their halogenated derivatives (XPAHs) are ubiquitous in various environmental media. Analytical problems, however, make it difficult to accurately determine their concentrations. To develop a satisfactory analytical method suitable for a diversity of PAHs and XPAHs in multiple environmental samples, we evaluated three commercial analytical columns (DB-5MS, Select PAH, and Rxi-PAH) for better chromatographic separation and optimized the analytical conditions for gas chromatography-triple quadrupole mass spectrometry (GC-MS/MS). Comparison of the abilities of the columns to separate peaks revealed that the Rxi-PAH was the best column for both PAH and XPAH analyses. Optimization of analytical conditions for GC-MS/MS resulted in sensitivities for PAHs and XPAHs that were 4.2-fold-2600-fold higher than the sensitivities of GC-high-resolution MS (GC-HRMS) (an example of a traditional analytical method). Although there were no statistically significant differences between the instrumental detection limits (IDLs) of PAHs and XPAHs measured by GC-HRMS, the IDLs of XPAHs were significantly lower than those of PAHs when measured by GC-MS/MS. This difference could be attributed to the unique ionization patterns of XPAHs in the GC-MS/MS analysis, which suppressed background noise and increased the analytical sensitivity. Analyses of PAHs and XPAHs in grilled chicken, vehicle exhaust, sea sediment, ambient air, and indoor dust via the analytical method optimized in this study revealed that the proposed method was sufficiently sensitive, comprehensive, and versatile for risk assessment purposes, and could eliminate interferences associated with the co-elution of target PAHs and XPAHs.
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Affiliation(s)
- Kento Sei
- Graduate Division of Nutritional and Environmental Sciences, University of Shizuoka, 52-1 Yada, Suruga-ku, Shizuoka, 422-8526, Japan
| | - Qi Wang
- Graduate Division of Nutritional and Environmental Sciences, University of Shizuoka, 52-1 Yada, Suruga-ku, Shizuoka, 422-8526, Japan
| | - Masahiro Tokumura
- Graduate Division of Nutritional and Environmental Sciences, University of Shizuoka, 52-1 Yada, Suruga-ku, Shizuoka, 422-8526, Japan
| | - Yuichi Miyake
- Graduate Division of Nutritional and Environmental Sciences, University of Shizuoka, 52-1 Yada, Suruga-ku, Shizuoka, 422-8526, Japan.
| | - Takashi Amagai
- Graduate Division of Nutritional and Environmental Sciences, University of Shizuoka, 52-1 Yada, Suruga-ku, Shizuoka, 422-8526, Japan.
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Gopi PK, Ravikumar CH, Chen SM, Chen TW, Ali MA, Al-Hemaid FMA, El-Shikh MS, Alnakhli AK. Tailoring of bismuth vanadate impregnated on molybdenum/graphene oxide sheets for sensitive detection of environmental pollutants 2, 4, 6 trichlorophenol. Ecotoxicol Environ Saf 2021; 211:111934. [PMID: 33472109 DOI: 10.1016/j.ecoenv.2021.111934] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/10/2020] [Revised: 12/31/2020] [Accepted: 01/09/2021] [Indexed: 06/12/2023]
Abstract
In the present work, we reported a one pot simple colloidal-gel synthesis of molybdenum bismuth vanadate (MoBiVO4). The charge transfer property of MoBiVO4 was improved by developing a composite with graphene oxide (GO) through sonochemical technique. The optical and morphological analysis revealed that successful formation of GO-MoBiVO4 composite without any other filth. As prepared composite was used to modify the superficial surface of glassy carbon electrode (GO-MoBiVO4/GCE) and applied for the selective detection of environmental pollutant 2, 4, 6 trichrlorophenol (TCP). The electron channeling capability of GO with molybdenum bismuth vanadate possessed a superior electrochemical response in cyclic voltammetry (CV), whereas bare GCE and other modified electrodes provided an inferior response with lower current response. The differential pulse voltammetry (DPV) response of TCP at GO-MoBiVO4/GCE outcomes with low level detection of 0.4 nM and higher sensitivity of 2.49 μA μM-1 cm-2 with wider linear response 0.199-17.83 μM. Furthermore, the proposed sensor applied in practicability analysis and the results indicates GO-MoBiVO4/GCE prominent towards electrochemical detection of TCP.
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Affiliation(s)
- Praveen Kumar Gopi
- Electroanalysis and Bioelectrochemistry Lab, Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, No. 1, Section 3, Chung-Hsiao East Road, Taipei 106, Taiwan, ROC
| | - Chandan Hunsur Ravikumar
- Pilot Plant Development and Training Institute, King Mongkut's University of Technology Thonburi, Bangkhuntien-Chaitalay Road, Thakam, Bangkok 10150, Thailand; Centre for Nano and Materials Sciences, Jain global campus, Jain University, Jakkasandra post, Ramanagaram 52110, India
| | - Shen-Ming Chen
- Electroanalysis and Bioelectrochemistry Lab, Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, No. 1, Section 3, Chung-Hsiao East Road, Taipei 106, Taiwan, ROC.
| | - Tse-Wei Chen
- Electroanalysis and Bioelectrochemistry Lab, Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, No. 1, Section 3, Chung-Hsiao East Road, Taipei 106, Taiwan, ROC; Research and Development Center for Smart Textile Technology, National Taipei University of Technology, Taipei 106, Taiwan, ROC
| | - Mohammad Ajmal Ali
- Department of Botany and Microbiology, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
| | - Fahad M A Al-Hemaid
- Department of Botany and Microbiology, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
| | - Mohammad Suliman El-Shikh
- Department of Botany and Microbiology, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
| | - A K Alnakhli
- Department of Botany and Microbiology, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
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Sheng E, Lu Y, Xiao Y, Li Z, Wang H, Dai Z. Simultaneous and ultrasensitive detection of three pesticides using a surface-enhanced Raman scattering-based lateral flow assay test strip. Biosens Bioelectron 2021; 181:113149. [PMID: 33713951 DOI: 10.1016/j.bios.2021.113149] [Citation(s) in RCA: 50] [Impact Index Per Article: 16.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2020] [Revised: 02/26/2021] [Accepted: 03/02/2021] [Indexed: 01/29/2023]
Abstract
Chlorothalonil (CHL), imidacloprid (IMI) and oxyfluorfen (OXY) are commonly used in combination to increase crop yield. However, these three pesticides are toxic to aquatic organisms and do not easily degrade. In this study, a surface-enhanced Raman scattering-based lateral flow assay (SERS-LFA) test strip was prepared by combining antibodies with SERS nanotags, and then competitive immune binding was used to detect the three pesticides simultaneously. Moreover, the two-way binding effect of ssDNA-streptavidin bound to Ag4-NTP@AuNPs and Ag4-NTP@AuNPs with antibodies was used to further amplify the detection signal. Under the optimal conditions, the SERS-LFA test strips exhibited high sensitivity, a low detection limit, short detection time, high specificity and low cost. Furthermore, the detection range was within the values prescribed by international detection standards. By measuring the intensity of the SERS signal on the test line of the paper strip, accurate quantitative analysis was achieved. The practical application of the proposed system was demonstrated by simultaneous detection of CHL, IMI and OXY in environmental and food samples with satisfactory results.
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Affiliation(s)
- Enze Sheng
- Jiangsu Collaborative Innovation Center of Biomedical Functional Materials and Jiangsu Key Laboratory of Biofunctional Materials, School of Chemistry and Materials Science, Nanjing Normal University, Nanjing, 210023, PR China
| | - Yuxiao Lu
- Jiangsu Collaborative Innovation Center of Biomedical Functional Materials and Jiangsu Key Laboratory of Biofunctional Materials, School of Chemistry and Materials Science, Nanjing Normal University, Nanjing, 210023, PR China
| | - Yue Xiao
- Jiangsu Collaborative Innovation Center of Biomedical Functional Materials and Jiangsu Key Laboratory of Biofunctional Materials, School of Chemistry and Materials Science, Nanjing Normal University, Nanjing, 210023, PR China
| | - Zhenxi Li
- Jiangsu Collaborative Innovation Center of Biomedical Functional Materials and Jiangsu Key Laboratory of Biofunctional Materials, School of Chemistry and Materials Science, Nanjing Normal University, Nanjing, 210023, PR China
| | - Huaisheng Wang
- School of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng, 252059, PR China
| | - Zhihui Dai
- Jiangsu Collaborative Innovation Center of Biomedical Functional Materials and Jiangsu Key Laboratory of Biofunctional Materials, School of Chemistry and Materials Science, Nanjing Normal University, Nanjing, 210023, PR China.
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Zeng Y, Qi P, Wang Y, Chen C, Zhang D. DNA pom-pom nanostructure as a multifunctional platform for pathogenic bacteria determination and inactivation. Biosens Bioelectron 2021; 177:112982. [PMID: 33450613 DOI: 10.1016/j.bios.2021.112982] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2020] [Revised: 12/25/2020] [Accepted: 01/04/2021] [Indexed: 11/17/2022]
Abstract
Pathogenic bacteria levels are significantly related with disease control, clinical diagnosis, and even environmental monitoring. It is becoming highly urgent to achieve ultrasensitive detection of pathogenic bacteria and efficient combat of bacterial infection. Toward this end, we have assembled a DNA Pom-Pom nanostructure (PP-N) based multifunctional platform for pathogenic bacteria determination and inactivation. In particular, one DNA oligonucleotide probe that serve as a trigger was specifically designed for the autonomous cross-opening of metastable DNA hairpin probes and long dsDNA structure formation, achieving a catalytic self-assembly of DNA nanostructure. Numerous DNA strands in this PP-N assembly provide sufficient interaction sites for functional domains and connector, showing high programmability, excellent biostability, as well as selective target recognition. With these properties, the fluorescence dyes modified PP-N platform showed excellent bacteria analysis with both excellent selectivity and ultrasensitive determination limit as low as 2.0 CFU/mL. Furthermore, the aptamer-functionalized and antibiotics loaded PP-N platform demonstrate excellent merits of high antibiotics-loading capacity and negligible cytotoxicity to targets. Therefore, this DNA PP-N assembly based multifunctional platform promise its great application in targeted sensing, combating bacterial infection, and potential clinic therapy.
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Affiliation(s)
- Yan Zeng
- Key Laboratory of Marine Environmental Corrosion and Bio-fouling, Institute of Oceanology, Chinese Academy of Sciences, 7 Nanhai Road, Qingdao, 266071, China; Open Studio for Marine Corrosion and Protection, Qingdao National Laboratory for Marine Science and Technology, 1 Wenhai Road, Qingdao, 266237, China; Center for Ocean Mega-Science, Chinese Academy of Sciences, 7 Nanhai Road, Qingdao, 266071, China
| | - Peng Qi
- Key Laboratory of Marine Environmental Corrosion and Bio-fouling, Institute of Oceanology, Chinese Academy of Sciences, 7 Nanhai Road, Qingdao, 266071, China; Open Studio for Marine Corrosion and Protection, Qingdao National Laboratory for Marine Science and Technology, 1 Wenhai Road, Qingdao, 266237, China; Center for Ocean Mega-Science, Chinese Academy of Sciences, 7 Nanhai Road, Qingdao, 266071, China.
| | - Yingwen Wang
- Key Laboratory of Marine Environmental Corrosion and Bio-fouling, Institute of Oceanology, Chinese Academy of Sciences, 7 Nanhai Road, Qingdao, 266071, China; Open Studio for Marine Corrosion and Protection, Qingdao National Laboratory for Marine Science and Technology, 1 Wenhai Road, Qingdao, 266237, China; Center for Ocean Mega-Science, Chinese Academy of Sciences, 7 Nanhai Road, Qingdao, 266071, China; University of the Chinese Academy of Sciences, Beijing, 100039, China
| | - Chao Chen
- Key Laboratory of Marine Environmental Corrosion and Bio-fouling, Institute of Oceanology, Chinese Academy of Sciences, 7 Nanhai Road, Qingdao, 266071, China; Open Studio for Marine Corrosion and Protection, Qingdao National Laboratory for Marine Science and Technology, 1 Wenhai Road, Qingdao, 266237, China; Center for Ocean Mega-Science, Chinese Academy of Sciences, 7 Nanhai Road, Qingdao, 266071, China
| | - Dun Zhang
- Key Laboratory of Marine Environmental Corrosion and Bio-fouling, Institute of Oceanology, Chinese Academy of Sciences, 7 Nanhai Road, Qingdao, 266071, China; Open Studio for Marine Corrosion and Protection, Qingdao National Laboratory for Marine Science and Technology, 1 Wenhai Road, Qingdao, 266237, China; Center for Ocean Mega-Science, Chinese Academy of Sciences, 7 Nanhai Road, Qingdao, 266071, China.
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Baek MS, Lee KH, Byun JY, Shin YB, Kim DM. Aptamer-linked in vitro expression assay for ultrasensitive detection of biomarkers. Anal Chim Acta 2020; 1146:118-123. [PMID: 33461706 DOI: 10.1016/j.aca.2020.12.036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2020] [Revised: 12/02/2020] [Accepted: 12/18/2020] [Indexed: 10/22/2022]
Abstract
Signal amplification is a key step that determines the sensitivity of molecular assays. Although studies on aptamers have mostly focused on their target-binding ability, taking advantage of the gene-coding function of nucleic acids, we demonstrate here that aptamers can be engineered into diagnostic reagents that can both recognize a target and generate highly amplified detection signals. We developed a strategy that employs a 'readable' aptamer that consists of a single-stranded aptamer and a double-stranded reporter gene. After binding to its target via the aptamer region, the reporter gene of the readable aptamer produces amplified number of signal-generating enzymes through a subsequent in vitro expression reaction. In contrast to conventional enzyme-conjugation methods, this method allows the generation of far more amplified detection signals, thereby markedly increasing the sensitivity of detection enough to analyze a target present in aM concentrations.
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Affiliation(s)
- Min-Seok Baek
- Department of Chemical Engineering and Applied Chemistry, Chungnam National University, Daejeon, 34134, South Korea
| | - Kyung-Ho Lee
- Department of Chemical Engineering and Applied Chemistry, Chungnam National University, Daejeon, 34134, South Korea
| | - Ju-Young Byun
- BioNano Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon, 34141, South Korea
| | - Yong-Beom Shin
- BioNano Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon, 34141, South Korea; BioNano Health Guard Research Center (H-GUARD), Korea Research Institute of Bioscience & Biotechnology (KRIBB), Daejeon, 34141, South Korea
| | - Dong-Myung Kim
- Department of Chemical Engineering and Applied Chemistry, Chungnam National University, Daejeon, 34134, South Korea.
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Malecka K, Kaur B, Cristaldi DA, Chay CS, Mames I, Radecka H, Radecki J, Stulz E. Silver or gold? A comparison of nanoparticle modified electrochemical genosensors based on cobalt porphyrin-DNA. Bioelectrochemistry 2020; 138:107723. [PMID: 33360955 DOI: 10.1016/j.bioelechem.2020.107723] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2020] [Revised: 12/04/2020] [Accepted: 12/05/2020] [Indexed: 11/18/2022]
Abstract
We applied a cobalt-porphyrin modified DNA as electrochemical marker, which was attached to nanoparticles, to detect specific DNA sequences. We compare the performance of gold and silver NPs in oligonucleotide sensors to determine if a change in metal will lead to either higher sensitivity or different selectivity, based on the redox behaviour of silver vs. gold. Surprisingly, we find that using either gold or silver NPs yields very similar overall performance. The electrochemical measurements of both types of sensors show the same redox behaviour which is dominated by the cobalt porphyrin, indicating that the electron pathway does not include the NP, but there is direct electron transfer between the porphyrin and the electrode. Both sensors show a linear response in the range of 5 × 10-17-1 × 10-16 M; the limit of detection (LOD) is 3.8 × 10-18 M for the AuNP sensor, and 5.0 × 10-18 M for the AgNP sensor, respectively, which corresponds to the detection of about 20-50 DNA molecules in the analyte. Overall, the silver system results in a better DNA economy and using cheaper starting materials for the NPs, thus shows better cost-effectivness and could be more suitable for the mass-production of highly sensitive DNA sensors.
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Affiliation(s)
- Kamila Malecka
- Institute of Animal Reproduction and Food Research, Polish Academy of Sciences, Tuwima 10, 10-748 Olsztyn, Poland
| | - Balwinder Kaur
- Institute of Animal Reproduction and Food Research, Polish Academy of Sciences, Tuwima 10, 10-748 Olsztyn, Poland
| | - D Andrea Cristaldi
- School of Chemistry and Institute for Life Sciences, University of Southampton, Highfield, Southampton SO17 1BJ, UK
| | - Clarissa S Chay
- School of Chemistry and Institute for Life Sciences, University of Southampton, Highfield, Southampton SO17 1BJ, UK
| | - Iwona Mames
- School of Chemistry and Institute for Life Sciences, University of Southampton, Highfield, Southampton SO17 1BJ, UK
| | - Hanna Radecka
- Institute of Animal Reproduction and Food Research, Polish Academy of Sciences, Tuwima 10, 10-748 Olsztyn, Poland
| | - Jerzy Radecki
- Institute of Animal Reproduction and Food Research, Polish Academy of Sciences, Tuwima 10, 10-748 Olsztyn, Poland.
| | - Eugen Stulz
- School of Chemistry and Institute for Life Sciences, University of Southampton, Highfield, Southampton SO17 1BJ, UK.
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Chen B, Jiang T, Fu H, Qu X, Xu Z, Zheng S. Ultrasensitive, rapid and selective sensing of hazardous fluoride ion in aqueous solution using a zirconium porphyrinic luminescent metal-organic framework. Anal Chim Acta 2020; 1145:95-102. [PMID: 33453886 DOI: 10.1016/j.aca.2020.11.007] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2020] [Revised: 11/03/2020] [Accepted: 11/08/2020] [Indexed: 12/18/2022]
Abstract
The development of a rapid and sensitive method for the detection of fluoride ion (F-) in aqueous systems is of great significance for human health and environmental monitoring. In this study, a zirconium porphyrinic luminescent metal-organic framework (LMOF), PCN-222, was employed as a novel fluorescent probe for the ultrasensitive, rapid and selective detection of F- in water. The PCN-222 probe was prepared by a facile solvothermal method. It exhibited good fluorescence stability and was highly stable in water. The fluorescence emission of PCN-222 could be effectively and selectively quenched by F- due to the strong coordination affinity of F- to the zirconium clusters in PCN-222. The proposed fluorescence method for F- detection based on PCN-222 probe afforded a linear response range of 1-20 μmol/L and a very low detection limit (0.048-0.065 μmol/L) in reference to many reported F- fluorescent probes. Moreover, a rapid response time (<10 s) was obtained due to the open and uniform pore structure of PCN-222 that allowed the fast diffusion of F- to interact with the zirconium recognition sites. Finally, the PCN-222 probe was successfully applied for the fluorescence detection of F- in real water samples. These results highlight the great application potential of LMOF in the sensing fields.
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Affiliation(s)
- Beining Chen
- State Key Laboratory of Pollution Control and Resource Reuse/School of the Environment, Nanjing University, Jiangsu, 210046, China
| | - Tingting Jiang
- State Key Laboratory of Pollution Control and Resource Reuse/School of the Environment, Nanjing University, Jiangsu, 210046, China
| | - Heyun Fu
- State Key Laboratory of Pollution Control and Resource Reuse/School of the Environment, Nanjing University, Jiangsu, 210046, China.
| | - Xiaolei Qu
- State Key Laboratory of Pollution Control and Resource Reuse/School of the Environment, Nanjing University, Jiangsu, 210046, China
| | - Zhaoyi Xu
- State Key Laboratory of Pollution Control and Resource Reuse/School of the Environment, Nanjing University, Jiangsu, 210046, China
| | - Shourong Zheng
- State Key Laboratory of Pollution Control and Resource Reuse/School of the Environment, Nanjing University, Jiangsu, 210046, China
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Guan J, Yang J, Zhang Y, Zhang X, Deng H, Xu J, Wang J, Yuan MS. Employing a fluorescent and colorimetric picolyl-functionalized rhodamine for the detection of glyphosate pesticide. Talanta 2020; 224:121834. [PMID: 33379052 DOI: 10.1016/j.talanta.2020.121834] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2020] [Revised: 10/13/2020] [Accepted: 10/28/2020] [Indexed: 01/05/2023]
Abstract
The ongoing poisoning of agricultural products has pushed the security problem to become an important issue. Among them, exceeding the standard rate of pesticide residues is the main factor influencing the quality and security of agricultural products. Monitoring pesticide residues and developing simple, yet ultrasensitive detection systems for pesticide residues are urgently needed. In this study, we successfully developed a novel rhodamine derivative as fluorescent and colorimetric chemosensor R-G for the rapid, selective and ultrasensitive detection of glyphosate pesticide residue in aqueous solution. Through a Cu2+-indicator displacement strategy, glyphosate can displace an indicator (R-G) from a Cu2+-indicator complex due to its strong affinity to bind with Cu2+ to give a turn-on fluorescence and distinct color change. Moreover, a test strip was also fabricated to achieve a facile detection of glyphosate pesticide. To demonstrate the possibility of practical applications, glyphosate was detected on the surface of cabbage and in a spiked soil sample. The detection limit of 4.1 nM and the response time of 2 min indicate that the method is enough sensitive and rapid to detect the glyphosate residue at or below levels that pose a health risk.
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Affiliation(s)
- Jianping Guan
- College of Chemistry & Pharmacy, Northwest A&F University, Yangling, Shaanxi, 712100, PR China
| | - Jiao Yang
- College of Chemistry & Pharmacy, Northwest A&F University, Yangling, Shaanxi, 712100, PR China
| | - Yue Zhang
- College of Chemistry & Pharmacy, Northwest A&F University, Yangling, Shaanxi, 712100, PR China
| | - Xiaoxue Zhang
- College of Chemistry & Pharmacy, Northwest A&F University, Yangling, Shaanxi, 712100, PR China
| | - Huajuan Deng
- College of Chemistry & Pharmacy, Northwest A&F University, Yangling, Shaanxi, 712100, PR China
| | - Juan Xu
- College of Chemistry & Pharmacy, Northwest A&F University, Yangling, Shaanxi, 712100, PR China
| | - Jinyi Wang
- College of Chemistry & Pharmacy, Northwest A&F University, Yangling, Shaanxi, 712100, PR China.
| | - Mao-Sen Yuan
- College of Chemistry & Pharmacy, Northwest A&F University, Yangling, Shaanxi, 712100, PR China; State Key Laboratory of Crystal Materials, Shandong University, Jinan, 250100, PR China.
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Jiang X, Zhang J, Xu L, Wang W, Du J, Qu M, Han X, Yang L, Zhao B. Ultrasensitive SERS detection of antitumor drug methotrexate based on modified Ag substrate. Spectrochim Acta A Mol Biomol Spectrosc 2020; 240:118589. [PMID: 32563032 DOI: 10.1016/j.saa.2020.118589] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/12/2020] [Revised: 06/02/2020] [Accepted: 06/05/2020] [Indexed: 06/11/2023]
Abstract
Methotrexate (MTX) is a drug with broad-spectrum antitumor activity that is of great importance in therapeutic drug monitoring applications. In this essay, the two-step modified concentrated Ag colloid with the assistance of KF and MgSO4 was used as the SERS active substrate for the ultrasensitive detection of MTX and its commercial formulations (tablets). It can be found that the two-step modification of the samples is a crucial procedure to remove the by-products in the synthesis of Ag colloid and further concentrate the Ag colloid. Under the optimal detection conditions, the minimum detection concentration of MTX is 1 × 10-16 mol/L. And, there is a good linear relationship over a wide concentration range of 1 × 10-16-1 × 10-6 mol/L. The labelled amounts of the two manufacturers of MTX commercial tablets are in the range of 96.4-104.3% with the RSDs between 1.8% and 3.5% by this method, which are in accordance with the methodological requirements. These results prove that the proposed SERS method exhibits a good reproducibility and ultra-high sensitivity for the detection of the antitumor drug MTX.
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Affiliation(s)
- Xin Jiang
- College of Pharmacy, Jiamusi University, Jiamusi 154007, People's Republic of China
| | - Jian Zhang
- College of Pharmacy, Jiamusi University, Jiamusi 154007, People's Republic of China
| | - Lin Xu
- College of Pharmacy, Jiamusi University, Jiamusi 154007, People's Republic of China
| | - Weie Wang
- College of Pharmacy, Jiamusi University, Jiamusi 154007, People's Republic of China
| | - Juan Du
- College of Pharmacy, Jiamusi University, Jiamusi 154007, People's Republic of China
| | - Minghuan Qu
- College of Pharmacy, Jiamusi University, Jiamusi 154007, People's Republic of China
| | - Xiaoxia Han
- State Key Laboratory of Supramolecular Structure and Materials, Jilin University, Changchun 130012, People's Republic of China
| | - Libin Yang
- College of Pharmacy, Jiamusi University, Jiamusi 154007, People's Republic of China.
| | - Bing Zhao
- State Key Laboratory of Supramolecular Structure and Materials, Jilin University, Changchun 130012, People's Republic of China.
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Zhan S, Hu J, Li Y, Huang X, Xiong Y. Direct competitive ELISA enhanced by dynamic light scattering for the ultrasensitive detection of aflatoxin B 1 in corn samples. Food Chem 2020; 342:128327. [PMID: 33069525 DOI: 10.1016/j.foodchem.2020.128327] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2020] [Revised: 08/08/2020] [Accepted: 10/05/2020] [Indexed: 12/25/2022]
Abstract
Compared with absorbance, scattering-based dynamic light scattering (DLS) signal has higher sensitivity because its light-scattering intensity is very sensitive to changes in size, thereby enhancing the sensitivity. Herein, we first developed a DLS-enhanced direct competitive enzyme-linked immunosorbent assay (DLS-dcELISA) for ultrasensitive detection of aflatoxin B1 (AFB1) in corn. By using hydroxyl radical-induced gold nanoparticle (AuNP) aggregation to amplify AuNP scattering signals, the developed DLS-dcELISA exhibited ultrahigh sensitivity for AFB1. The detection limit was 0.12 pg mL-1, which was 153- and 385-fold lower than those obtained using plasmonic and colorimetric dcELISA. In addition, the DLS-dcELISA exhibited excellent selectivity, high accuracy, and strong practicality. Overall, this work presented a simple and universal strategy for improving the sensitivity of traditional ELISA platform only by using the sensitive DLS signals. This technique can replace absorbance-based plasmonic or colored signals as immunoassay signal output for enhanced competitive detection of mycotoxins.
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Affiliation(s)
- Shengnan Zhan
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, PR China; School of Food Science and Technology, Nanchang University, Nanchang 330047, PR China
| | - Jiaqi Hu
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, PR China; School of Food Science and Technology, Nanchang University, Nanchang 330047, PR China
| | - Yu Li
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, PR China; School of Food Science and Technology, Nanchang University, Nanchang 330047, PR China
| | - Xiaolin Huang
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, PR China; School of Food Science and Technology, Nanchang University, Nanchang 330047, PR China.
| | - Yonghua Xiong
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, PR China; School of Food Science and Technology, Nanchang University, Nanchang 330047, PR China; Jiangxi-OAI Joint Research Institute, Nanchang University, Nanchang 330047, PR China.
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Nawaz H, Zhang J, Tian W, Jin K, Jia R, Yang T, Zhang J. Cellulose-based fluorescent sensor for visual and versatile detection of amines and anions. J Hazard Mater 2020; 387:121719. [PMID: 31780292 DOI: 10.1016/j.jhazmat.2019.121719] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/15/2019] [Revised: 11/13/2019] [Accepted: 11/18/2019] [Indexed: 06/10/2023]
Abstract
It is practical and challenging to construct ultrasensitive and multi-responsive sensors for visual and real-time monitoring of the environment. Herein, a cellulose-based multi-responsive fluorescent sensor (Phen-MDI-CA) is fabricated, and realizes a visual and ultrasensitive detection of not only various amines but also three anions based on the change of the fluorescence and/or visible colors. Once exposure to various amines in both the solution and vapor state, the Phen-MDI-CA solution and test paper exhibit different fluorescence colors, which can be used to distinguish triethylamine, ethylenediamine, methylamine, aniline, hydrazine and pyrrolidine from other amines. Moreover, via combining the Phen-MDI-CA with the Phen-MDI-CA/malachite green ratiometric system, phosphate (PO43-), carbonate (CO32-) and borate (B4O72-) can be visually and accurately recognized depending on the change of the visible and fluorescence colors. In fluorescent mode, the LOD for B4O72-, PO43- and CO32- ions is as low as 0.18 nmol, 0.69 nmol and 0.86 nmol, respectively. Significantly, the Phen-MDI-CA can readily make a qualitative and quantitative detection of B4O72-, PO43- and CO32- anions in the mixture of anions. The state-of-the-art responsive behavior of Phen-MDI-CA originates from the amplification effect of cellulose polymer chain and the differentiated interactions between the sensor and analytes.
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Affiliation(s)
- Haq Nawaz
- CAS Key Laboratory of Engineering Plastics, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences (CAS), Beijing, 100190, China
| | - Jinming Zhang
- CAS Key Laboratory of Engineering Plastics, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences (CAS), Beijing, 100190, China.
| | - Weiguo Tian
- CAS Key Laboratory of Engineering Plastics, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences (CAS), Beijing, 100190, China
| | - Kunfeng Jin
- CAS Key Laboratory of Engineering Plastics, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences (CAS), Beijing, 100190, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Ruonan Jia
- CAS Key Laboratory of Engineering Plastics, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences (CAS), Beijing, 100190, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Tiantian Yang
- CAS Key Laboratory of Engineering Plastics, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences (CAS), Beijing, 100190, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Jun Zhang
- CAS Key Laboratory of Engineering Plastics, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences (CAS), Beijing, 100190, China; University of Chinese Academy of Sciences, Beijing, 100049, China.
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Chen J, Meng HM, An Y, Liu J, Yang R, Qu L, Li Z. A fluorescent nanosphere-based immunochromatography test strip for ultrasensitive and point-of-care detection of tetanus antibody in human serum. Anal Bioanal Chem 2020; 412:1151-8. [PMID: 31867701 DOI: 10.1007/s00216-019-02343-7] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2019] [Revised: 12/03/2019] [Accepted: 12/09/2019] [Indexed: 01/10/2023]
Abstract
Tetanus still possesses a high infection risk and leads a number of human deaths in poor nations. Point-of-care and ultrasensitive detection of tetanus antibody levels in serum is the key to decrease the risk of tetanus infection and improve the health of people. In this work, by using ultra bright fluorescent nanospheres (FNs) and portable lateral flow test strip (LFTS), a point-of-care and ultrasensitive sensing method has been developed for the detection of tetanus antibodies in human serum. This assay works quite well for tetanus antibodies in the concentration range from 0.0002 to 0.0220 IU/mL with a low detection limit of 0.00011 IU/mL, which is 100-fold lower than conventional gold-based LFTSs. The high sensitivity makes this method suitable for use to detect the low-abundant target in real samples. Besides, this cost-effective FN-based LFTS assay possesses good selectivity, high accuracy, and satisfactory reliability, which holds great potential as a robust candidate for routine medical diagnosis and rapid home testing. Graphical abstract.
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Li J, Ouyang Y, Liu L, Zhu C, Meng J, Zheng H, Zhou Y, Wan J, Hu Z, Wang B. Tailored monoclonal antibody as recognition probe of immunosensor for ultrasensitive detection of silk fibroin and use in the study of archaeological samples. Biosens Bioelectron 2019; 145:111709. [PMID: 31550631 DOI: 10.1016/j.bios.2019.111709] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2019] [Revised: 09/14/2019] [Accepted: 09/16/2019] [Indexed: 01/06/2023]
Abstract
The ultrasensitive detection of fibroin in unearthed silk relics has great significance for investigating the origin and transmission of silk. In this study, an anti-fibroin monoclonal antibody was successfully prepared through animal immunization. Next, a label-free electrochemical immunosensor was fabricated using layer-by-layer self-assembly technology, and an indirect enzyme-linked immunosorbent assay (ELISA) was proposed. The two methods exhibited excellent sensitivity and specificity in the detection of silk fibroin, while the immunosensor showed a wider quantitative detection range (0.1-100 ng mL-1) and a lower detection limit (0.051 ng mL-1) than ELISA (10-100 ng mL-1 and 8.71 ng mL-1). Furthermore, the performance of the immunosensor was superior in archaeological sample detection. Taking advantage of the well-prepared monoclonal antibody, the two proposed immunological assays demonstrate tremendous potential for the ultrasensitive detection of silk fibroin, which can make great contributions to exploring the origin and transmission routes of ancient silks.
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Affiliation(s)
- Jin Li
- Key Laboratory of Advanced Textile Materials and Manufacturing Technology, Ministry of Education, Zhejiang Sci-Tech University, Hangzhou, 310018, China
| | - Yi Ouyang
- Key Laboratory of Advanced Textile Materials and Manufacturing Technology, Ministry of Education, Zhejiang Sci-Tech University, Hangzhou, 310018, China
| | - Linshuai Liu
- Key Laboratory of Advanced Textile Materials and Manufacturing Technology, Ministry of Education, Zhejiang Sci-Tech University, Hangzhou, 310018, China
| | - Chengyu Zhu
- Key Laboratory of Advanced Textile Materials and Manufacturing Technology, Ministry of Education, Zhejiang Sci-Tech University, Hangzhou, 310018, China
| | - Junjing Meng
- Key Laboratory of Advanced Textile Materials and Manufacturing Technology, Ministry of Education, Zhejiang Sci-Tech University, Hangzhou, 310018, China
| | - Hailing Zheng
- Key Scientific Research Base of Textile Conservation, State Administration for Cultural Heritage, China National Silk Museum, Hangzhou, 310002, China
| | - Yang Zhou
- Key Scientific Research Base of Textile Conservation, State Administration for Cultural Heritage, China National Silk Museum, Hangzhou, 310002, China.
| | - Junmin Wan
- Key Laboratory of Advanced Textile Materials and Manufacturing Technology, Ministry of Education, Zhejiang Sci-Tech University, Hangzhou, 310018, China
| | - Zhiwen Hu
- Institute of Textile Conservation, Zhejiang Sci-Tech University, Hangzhou, 310018, China
| | - Bing Wang
- Key Laboratory of Advanced Textile Materials and Manufacturing Technology, Ministry of Education, Zhejiang Sci-Tech University, Hangzhou, 310018, China.
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Chen YY, Lin Q, Zhang YM, Yao H, Wei TB, Fan YQ, Guan XW, Gong GF, Zhou Q. Rationally introduce AIE into chemosensor: A novel and efficient way to achieving ultrasensitive multi-guest sensing. Spectrochim Acta A Mol Biomol Spectrosc 2019; 218:263-270. [PMID: 31003051 DOI: 10.1016/j.saa.2019.04.014] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/27/2019] [Revised: 04/04/2019] [Accepted: 04/09/2019] [Indexed: 06/09/2023]
Abstract
Recently, ultrasensitive detection and multi-guest sensing have received extensive attention due to their high sensitivity and efficiency. Herein, we report a novel approach to achieve ultrasensitive detection of multi-analyte. This approach is concluded as "rationally introduce Aggregation-Induced Emission (AIE) into chemosensor". According to this approach, by rationally introducing self-assembly moiety, the obtained chemosensor DNS could serve as a novel AIEgen and show strong AIE in DMSO/H2O (water fraction 80%) binary solution. Interestingly, a simple fluorescent sensor array based on the DNS has been developed. This sensor array could selectively sense Fe3+, Al3+, H2PO4- and L-Arg in water solution. More importantly, this sensor array shows ultrasensitive detection for Fe3+, Al3+ and L-Arg. The LODs of the sensor array for Fe3+, Al3+ and L-Arg are in the range of 3.54×10-9M to 9.42×10-9M. Moreover, H2PO4- could realize the reversible detection of Fe3+ in the DMSO/H2O (water fraction 80%) solution. Meanwhile, DNS-based test papers and thin films were prepared, which could serve as test kits for convenient detection Fe3+, Al3+, and L-Arg in water. In addition, they could also act as efficient erasable fluorescent display materials.
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Affiliation(s)
- Yan-Yan Chen
- Key Laboratory of Eco-Environment-Related Polymer Materials, Ministry of Education of China; Research Center of Gansu Military and Civilian Integration Advanced Structural Materials; College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, Gansu, 730070, China
| | - Qi Lin
- Key Laboratory of Eco-Environment-Related Polymer Materials, Ministry of Education of China; Research Center of Gansu Military and Civilian Integration Advanced Structural Materials; College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, Gansu, 730070, China.
| | - You-Ming Zhang
- Key Laboratory of Eco-Environment-Related Polymer Materials, Ministry of Education of China; Research Center of Gansu Military and Civilian Integration Advanced Structural Materials; College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, Gansu, 730070, China; College of Chemistry and Chemical Engineering, Lanzhou City University, Lanzhou, Gansu 730070, China.
| | - Hong Yao
- Key Laboratory of Eco-Environment-Related Polymer Materials, Ministry of Education of China; Research Center of Gansu Military and Civilian Integration Advanced Structural Materials; College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, Gansu, 730070, China
| | - Tai-Bao Wei
- Key Laboratory of Eco-Environment-Related Polymer Materials, Ministry of Education of China; Research Center of Gansu Military and Civilian Integration Advanced Structural Materials; College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, Gansu, 730070, China
| | - Yan-Qing Fan
- Key Laboratory of Eco-Environment-Related Polymer Materials, Ministry of Education of China; Research Center of Gansu Military and Civilian Integration Advanced Structural Materials; College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, Gansu, 730070, China
| | - Xiao-Wen Guan
- Key Laboratory of Eco-Environment-Related Polymer Materials, Ministry of Education of China; Research Center of Gansu Military and Civilian Integration Advanced Structural Materials; College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, Gansu, 730070, China
| | - Guan-Fei Gong
- Key Laboratory of Eco-Environment-Related Polymer Materials, Ministry of Education of China; Research Center of Gansu Military and Civilian Integration Advanced Structural Materials; College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, Gansu, 730070, China
| | - Qi Zhou
- Key Laboratory of Eco-Environment-Related Polymer Materials, Ministry of Education of China; Research Center of Gansu Military and Civilian Integration Advanced Structural Materials; College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, Gansu, 730070, China
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Tan X, Zhang L, Tang Q, Zheng G, Li H. Ratiometric fluorescent immunoassay for the cardiac troponin-I using carbon dots and palladium-iridium nanocubes with peroxidase-mimicking activity. Mikrochim Acta 2019; 186:280. [PMID: 30989395 DOI: 10.1007/s00604-019-3375-z] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2018] [Accepted: 03/21/2019] [Indexed: 01/27/2023]
Abstract
A nanozyme-linked immunosorbent assay is described for cardiac troponin I which is a biomarker for myocardial infarction. The method is based on the use of Pd-Ir nanocubes with excellent peroxidase-like activity. The nanocubes catalyze the oxidization of nonfluorescent o-phenylenediamine (OPD) by H2O2 to form a yellow fluorescent product (oxOPD) with excitation/emission maxima at 400/570 nm. Carbon dots are added as a reference fluorophore. Under the same excitation wavelength, they display blue fluorescence (450 nm). The ELISA uses the Pd-Ir nanocubes as a label for the secondary antibody and OPD as substrate. The ratio of fluorescence intensities at 570 and 450 nm increases in the 1 pg·mL-1 to 1 ng·mL-1 cardiac troponin I concentration range, and the detection limit is 0.31 pg·mL-1. The method was applied to analyze spiked serum samples, and the results compared well with those obtained by a commercial chemiluminescence assay. Graphical abstract Schematic presentation of the ratiometric fluorescence immunoassay for cardiac troponin-I. Pd-Ir nanocubes were employed to fabricate nanozyme-based signal labels for its excellent peroxidase-mimicking activity.
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Affiliation(s)
- Xiaofeng Tan
- School of Chemistry and Chemical Engineering, and Institute of Surface Analysis and Chemical Biology, University of Jinan, Jinan, 250022, China
| | - Lianhua Zhang
- Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200127, China
| | - Qiaorong Tang
- School of Chemistry and Chemical Engineering, and Institute of Surface Analysis and Chemical Biology, University of Jinan, Jinan, 250022, China
| | - Gengxiu Zheng
- School of Chemistry and Chemical Engineering, and Institute of Surface Analysis and Chemical Biology, University of Jinan, Jinan, 250022, China.
| | - He Li
- School of Chemistry and Chemical Engineering, and Institute of Surface Analysis and Chemical Biology, University of Jinan, Jinan, 250022, China. .,College of Optoelectronics Technology, Chengdu University of Information Technology, Chengdu, 610225, China.
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Xu L, Zhang Q, Hu Y, Ma S, Hu D, Wang J, Rao J, Guo Z, Wang S, Wu D, Liu Q, Peng J. Ultrasensitive mushroom-like electrochemical immunosensor for probing the activity of histone acetyltransferase. Anal Chim Acta 2019; 1066:28-35. [PMID: 31027532 DOI: 10.1016/j.aca.2019.03.047] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2018] [Revised: 03/10/2019] [Accepted: 03/19/2019] [Indexed: 10/27/2022]
Abstract
A novel mushroom-like electrochemical immunoassay for the ultrasensitive detection of histone acetyltransferase activity (HAT p300) has been established on account of the new composite graphene oxide (GO) nanolayer. The immunoassay involves immobilization of substrate peptide onto Au electrode, acetylation in lysine of substrate peptide, and the interaction between acetyl group of lysine and acetyl-antibody (AbAc) of the GO nanolayer. The GO nanolayer comprises large amounts of methylene blue molecules (MB), giving rise to large signal amplification. Only in the presence of HAT p300, an obvious electrochemical signal appears and the peak linear current is proportion to the HAT p300 concentrations ranging from 0.01 to 150 nM with a detection limit of 0.0036 nM. The great enhancement on sensitivity of the proposed mushroom-like immunosensor derives from both the constructed Faraday cage and the extended outer Helmholtz plane (OHP). Further, the immunosensor with excellent sensitivity and selectivity can be applied for the HAT p300 activity detection in Hela cell lysates, serum and urine, hinting an improved and splendid analytical performance. Briefly, this stable, simple and ultrasensitive electrochemical immunoassay has considerable promise for further applications in the HATs-interrelated epigenetic studies and drug development.
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Affiliation(s)
- Lihua Xu
- Faculty of Materials Science and Chemical Engineering, Ningbo University, Ningbo, 315211, PR China
| | - Qingqing Zhang
- Faculty of Materials Science and Chemical Engineering, Ningbo University, Ningbo, 315211, PR China
| | - Yufang Hu
- Faculty of Materials Science and Chemical Engineering, Ningbo University, Ningbo, 315211, PR China; State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082, PR China.
| | - Shaohua Ma
- Faculty of Materials Science and Chemical Engineering, Ningbo University, Ningbo, 315211, PR China
| | - Dandan Hu
- Faculty of Materials Science and Chemical Engineering, Ningbo University, Ningbo, 315211, PR China
| | - Jiao Wang
- Faculty of Materials Science and Chemical Engineering, Ningbo University, Ningbo, 315211, PR China
| | - Jiajia Rao
- Faculty of Materials Science and Chemical Engineering, Ningbo University, Ningbo, 315211, PR China
| | - Zhiyong Guo
- Faculty of Materials Science and Chemical Engineering, Ningbo University, Ningbo, 315211, PR China.
| | - Sui Wang
- Faculty of Materials Science and Chemical Engineering, Ningbo University, Ningbo, 315211, PR China
| | - Di Wu
- Hunan Provincial People's Hospital, The First Affiliated Hospital of Hunan Normal University, Changsha, 410081, PR China
| | - Qiong Liu
- Hunan Provincial People's Hospital, The First Affiliated Hospital of Hunan Normal University, Changsha, 410081, PR China
| | - Jianqiao Peng
- Hunan Provincial People's Hospital, The First Affiliated Hospital of Hunan Normal University, Changsha, 410081, PR China.
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Li H, Tang Y, Zhao W, Wu Z, Wang S, Yu R. Palindromic molecular beacon-based intramolecular strand-displacement amplification strategy for ultrasensitive detection of K-ras gene. Anal Chim Acta 2019; 1065:98-106. [PMID: 31005156 DOI: 10.1016/j.aca.2019.02.059] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2018] [Revised: 01/11/2019] [Accepted: 02/27/2019] [Indexed: 10/27/2022]
Abstract
The sensitive detection of tumor proto-oncogenes is indispensable because the early diagnosis and accurate treatment of genetic diseases is the key guarantee of patients' health. In this study, we proposed a novel palindromic molecular beacon (PMB) that it bases on the signal amplification strategy for ultrasensitive detection of Kras gene codon 12. PMB is designed to have two palindromic fragments at its two ends, one of which is locked via folding into a hairpin structure and the other promotes the formation of PMB duplex via intermolecular self-hybridization. Target DNA can hybridize to the loop portion of PMB and release the palindromic fragment at the 3' end. Within the PMB duplex, the two palindromic fragments released hybridize with each other and serve as polymerization primer responsible for the strand-displacement amplification (SDA). Namely, hybridized target DNA can be displaced and initiates the next round of reactions, making the polymerization/displacement/hybridization process go forward circularly. As a result, a large number of polymerization products are produced, dramatically enhancing optical signal. Because primer hybridization and polymerization-based displacement occur within PMB duplex, the reaction process is called intramolecular strand-displacement amplification (ISDA). Via utilizing the newly-proposed PMB-based ISDA strategy, the target K-ras gene could be detected down to 10 pM with a wide response range of 1 × 10-11-1.5 × 10-7 M, and point mutations are easily distinguished, realizing the ultrasensitive, highly selective detection of K-ras gene. This impressive sensing paradigm demonstrates a new concept of signal amplification for the detection of disease-related genes only via using a simple way to efficiently amplify optical signal.
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Affiliation(s)
- Hongbo Li
- Key Laboratory of Functional Small Organic Molecule, Ministry of Education, College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang, 330022, PR China.
| | - Yongqiong Tang
- Key Laboratory of Functional Small Organic Molecule, Ministry of Education, College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang, 330022, PR China; Cancer Metastasis Alert and Prevention Center, Pharmaceutical Photocatalysis of State Key Laboratory of Photocatalysis on Energy and Environment, Fujian Provincial Key Laboratory of Cancer Metastasis Chemoprevention and Chemotherapy, College of Chemistry, Fuzhou University, Fuzhou, 350002, PR China
| | - Weihua Zhao
- Key Laboratory of Functional Small Organic Molecule, Ministry of Education, College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang, 330022, PR China
| | - Zaisheng Wu
- Cancer Metastasis Alert and Prevention Center, Pharmaceutical Photocatalysis of State Key Laboratory of Photocatalysis on Energy and Environment, Fujian Provincial Key Laboratory of Cancer Metastasis Chemoprevention and Chemotherapy, College of Chemistry, Fuzhou University, Fuzhou, 350002, PR China.
| | - Suqin Wang
- Key Laboratory of Functional Small Organic Molecule, Ministry of Education, College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang, 330022, PR China.
| | - Ruqin Yu
- State Key Laboratory for Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering Hunan University, Changsha, 410082, PR China
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Chakraborty B, Ghosh S, Das N, RoyChaudhuri C. Liquid gated ZnO nanorod FET sensor for ultrasensitive detection of Hepatitis B surface antigen with vertical electrode configuration. Biosens Bioelectron 2018; 122:58-67. [PMID: 30240967 DOI: 10.1016/j.bios.2018.09.019] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2018] [Revised: 09/02/2018] [Accepted: 09/04/2018] [Indexed: 01/10/2023]
Abstract
Detection of the Hepatitis-B surface antigen at the attomolar level is demonstrated using antibody functionalized liquid gated ZnO nanorods field effect transistor (FET) biosensor with vertical electrode configuration. The sensor is operated in heterodyne mode at high frequency to overcome the problem of Debye screening effect in physiological analyte. Enhanced penetration of the electric field lines through the nanorods enables significant improvement in the limit of detection and sensitivity compared to that of the conventional lateral electrode configuration. The combined effect of the probable change in the threshold voltage and the carrier mobility for vertical electrode configuration lead to a sensitivity of around 75% at 1 fM (which is an enhancement by 200%) and a detection limit of 20 aM with a dynamic range from 20 aM to 1 pM. The detection limit which is achieved with the proposed label free sensor in physiological analyte using antibodies is lowered by more than three orders of magnitude compared to the existing reports.
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Affiliation(s)
- B Chakraborty
- Department of Electronics and Telecommunication Engineering, Indian Institute of Engineering Science and Technology, Shibpur, West Bengal 711103, India
| | - S Ghosh
- Centre of Excellence for Green Energy and Sensor Systems, Indian Institute of Engineering Science and Technology (IIEST), Shibpur, Howrah, West Bengal 711103, India
| | - N Das
- Department of Electronics and Telecommunication Engineering, Indian Institute of Engineering Science and Technology, Shibpur, West Bengal 711103, India
| | - C RoyChaudhuri
- Department of Electronics and Telecommunication Engineering, Indian Institute of Engineering Science and Technology, Shibpur, West Bengal 711103, India.
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Abstract
In spite of its greatly scientific and technological importance, developing rapid, low cost and sensitive microarray sensors for onsite monitoring heavy metal contamination remains challenging. Here we develop a DNA nanostructured microarray (DNM) with a tubular three-dimensional sensing surface and an ordered nanotopography for rapid and sensitive multiplex detection of heavy metal ions. In our design, DNA tetrahedral-structured probes (TSPs) are used to engineer the sensing interface with spatially resolved and density-tunable sensing spots, improving the micro-confined molecular recognition. Meanwhile, a bubble-mediated shuttle reaction inside the DNM-functionalized microchannel improves the target-capturing efficiency. Thus, the sensitive and selective detection of multiple heavy metal ions (i.e., Hg2+, Ag+, and Pb2+) with this novel DNM biosensor can be achieved within 5 min. Moreover, the detection limit is down to 10, 10, and 20 nM for Hg2+, Ag+, and Pb2+, respectively. Therefore, the DNM biosensor capable of simultaneously detecting multiple heavy metal ions with sensitivity and selectivity shows great potential to be point-of-test devices.
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Affiliation(s)
- Mingshu Xiao
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai, P. R. China
| | - Xiangmeng Qu
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai, P. R. China
| | - Li Li
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai, P. R. China
| | - Hao Pei
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai, P. R. China.
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50
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Yin HQ, Ji CF, Yang XQ, Wang R, Yang S, Zhang HQ, Zhang JG. An improved gold nanoparticle probe-based assay for HCV core antigen ultrasensitive detection. J Virol Methods 2017; 243:142-145. [PMID: 28189584 DOI: 10.1016/j.jviromet.2017.02.007] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2016] [Revised: 02/07/2017] [Accepted: 02/07/2017] [Indexed: 12/22/2022]
Abstract
A gold nanoparticle probe-based assay (GNPA) was developed for ultrasensitive detection of Hepatitis C virus (HCV) core antigen. In the GNPA, after anti-HCV core antigen polyclonal antibodies and single-stranded barcode signal DNA were labeled on gold nanoparticle probe (NP), DNA enzyme was used to degrade the unbound barcode DNAs. The anti-HCV core antigen monoclonal antibodies were coated on magnetic microparticles probe (MMP). Then the NP-HCV core antigen-MMP sandwich immuno-complex was formed when the target antigen protein was added and captured. Magnetically separated, the immuno-complex containing the single-stranded barcode signal DNA was characterized by TaqMan probe based real-time fluorescence PCR. A detection limit of 1 fg/ml was determined for the HCV core antigen which is magnitude greater than that of ELISA (2ng/ml). The coefficients of variation (CV) of intra-assay and inter-assay respectively ranged from 0.22-2.62% and 1.92-3.01%. The improved GNPA decreased the interference of unbound barcode DNAs and may be an new way for HCV core antigen detection.
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Affiliation(s)
- Hui-Qiong Yin
- Beijing Institute of Transfusion Medicine, Beijing 100850, China
| | - Chang-Fu Ji
- Beijing Institute of Transfusion Medicine, Beijing 100850, China
| | - Xi-Qin Yang
- Beijing Institute of Basic Medical Science, Beijing 100850, China
| | - Rui Wang
- Beijing Institute of Transfusion Medicine, Beijing 100850, China
| | - Shu Yang
- Beijing Institute of Transfusion Medicine, Beijing 100850, China
| | - He-Qiu Zhang
- Beijing Institute of Basic Medical Science, Beijing 100850, China
| | - Jin-Gang Zhang
- Beijing Institute of Transfusion Medicine, Beijing 100850, China.
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