1
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Meng Y, Wang Y, Zhan Z, Chen Y, Zhang C, Peng W, Ying B, Chen P. Fructose@histone synergistically improve the performance of DNA-templated Cu NPs: rapid analysis of LAM in tuberculosis urine samples using a handheld fluorometer and a smartphone RGB camera. J Mater Chem B 2024. [PMID: 38884176 DOI: 10.1039/d4tb00693c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/18/2024]
Abstract
This study presented a nanoparticle-enhanced aptamer-recognizing homogeneous detection system combined with a portable instrument (NASPI) to quantify lipoarabinomannan (LAM). This system leveraged the high binding affinity of aptamers, the high sensitivity of nanoparticle cascade amplification, and the stabilization effect of dual stabilizers (fructose and histone), and used probe-Cu2+ to achieve LAM detection at concentrations ranging from 10 ag mL-1 to 100 fg mL-1, with a limit of detection of 3 ag mL-1 using a fluorometer. It can also be detected using an independently developed handheld fluorometer or the red-green-blue (RGB) camera of a smartphone, with a minimum detection concentration of 10 ag mL-1. We validated the clinical utility of the biosensor by testing the LAM in the urine of patients. Forty urine samples were tested, with positive LAM results in the urine of 18/20 tuberculosis (TB) cases and negative results in the urine of 6/10 latent tuberculosis infection cases and 10/10 non-TB cases. The assay results revealed a 100% specificity and a 90% sensitivity, with an area under the curve of 0.9. We believe that the NASPI biosensor can be a promising clinical tool with great potential to convert LAM into clinical indicators for TB patients.
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Affiliation(s)
- Yanming Meng
- Department of Laboratory Medicine, Med + X Center for Manufacturing, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, China.
| | - Yue Wang
- Department of Laboratory Medicine, Med + X Center for Manufacturing, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, China.
| | - Zixuan Zhan
- Department of Laboratory Medicine, Med + X Center for Manufacturing, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, China.
| | - Yuemei Chen
- Department of Laboratory Medicine, Med + X Center for Manufacturing, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, China.
| | - Chunying Zhang
- Department of Laboratory Medicine, Med + X Center for Manufacturing, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, China.
| | - Wu Peng
- Department of Laboratory Medicine, Med + X Center for Manufacturing, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, China.
| | - Binwu Ying
- Department of Laboratory Medicine, Med + X Center for Manufacturing, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, China.
| | - Piaopiao Chen
- Department of Laboratory Medicine, Med + X Center for Manufacturing, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, China.
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2
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Wang Y, Shen C, Wu C, Zhan Z, Qu R, Xie Y, Chen P. Self-Assembled DNA Machine and Selective Complexation Recognition Enable Rapid Homogeneous Portable Quantification of Lung Cancer CTCs. RESEARCH (WASHINGTON, D.C.) 2024; 7:0352. [PMID: 38711475 PMCID: PMC11070850 DOI: 10.34133/research.0352] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/13/2024] [Accepted: 03/21/2024] [Indexed: 05/08/2024]
Abstract
In this study, we systematically investigated the interactions between Cu2+ and various biomolecules, including double-stranded DNA, Y-shaped DNA nanospheres, the double strand of the hybridization chain reaction (HCR), the network structure of cross-linked HCR (cHCR), and small molecules (PPi and His), using Cu2+ as an illustrative example. Our research demonstrated that the coordination between Cu2+ and these biomolecules not only is suitable for modulating luminescent material signals through complexation reactions with Cu2+ but also enhances signal intensities in materials based on chemical reactions by increasing spatial site resistance and local concentration. Building upon these findings, we harnessed the potential for signal amplification in self-assembled DNA nanospheres and the selective complexation modulation of calcein in conjunction with the aptamer targeting mucin 1 as a recognition probe. We applied this approach to the analysis of circulating tumor cells, with the lung cancer cell line A549 serving as a representative model. Our assay, utilizing both a fluorometer and a handheld detector, achieved impressive detection limits of ag/ml and single-cell levels for mucin 1 and A549 cells, and this approach was successfully validated using 46 clinical samples, yielding 100% specificity and 86.5% sensitivity. Consequently, our strategy has paved the way for more portable and precise disease diagnosis.
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Affiliation(s)
| | | | | | | | | | | | - Piaopiao Chen
- Department of Laboratory Medicine, Med+X Center for Manufacturing, Department of Respiratory and Critical Care Medicine, Targeted Tracer Research and Development Laboratory, National Clinical Research Center for Geriatrics, West China Hospital,
Sichuan University, Chengdu, Sichuan 610041, China
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3
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Jing X, Shan S, Xing K, Cao W, Xiao X, Liu D, Lai W. Sensitive fluorescence ELISA with streptavidin scaffolded DNA tetrads for the detection of Escherichia coli O157:H7. J Dairy Sci 2023; 106:5930-5939. [PMID: 37474367 DOI: 10.3168/jds.2022-23015] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2022] [Accepted: 02/28/2023] [Indexed: 07/22/2023]
Abstract
Escherichia coli O157:H7 poses a threat to humans. Traditional ELISA is not a sensitive method for the detection of E. coli O157:H7. Here, an efficient method was designed for improving the load capacity of alkaline phosphatase (ALP) with streptavidin scaffolded DNA tetrad (SS-DNAt). With more ALP, more ascorbic acid 2-phosphate was catalyzed to ascorbic acid that was used to synthesize fluorescence poly adenine-thymine-templated copper nanoclusters. Based on SS-DNAt, fluorescence ELISA was successfully proposed for improving the sensitivity for detection of E. coli O157:H7 in milk samples. The method showed a linear range of 104 to 106 cfu/mL. The limit of detection of fluorescence ELISA was 3.75 × 103 cfu/mL and 6.16-fold better than that of traditional ELISA. The recovery of the fluorescence ELISA was 86.7 to 93.6% with the coefficient of variation of 5.6 to 10.5% in milk. This method could be used to detect hazardous material in food.
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Affiliation(s)
- Xudong Jing
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China
| | - Shan Shan
- College of Life Science, National R&D Center for Freshwater Fish Processing, Jiangxi Normal University, Nanchang 330022, China; Jiangxi Province Key Laboratory of Diagnosing and Tracing of Foodborne Disease, Jiangxi Province Center for Disease Control and Prevention, Nanchang 330029, China
| | - Keyu Xing
- School of Food Science and Bioengineering, Changsha University of Science and Technology, Changsha 410114, China
| | - Wenkai Cao
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China
| | - Xiaoyue Xiao
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China
| | - Daofeng Liu
- Jiangxi Province Key Laboratory of Diagnosing and Tracing of Foodborne Disease, Jiangxi Province Center for Disease Control and Prevention, Nanchang 330029, China.
| | - Weihua Lai
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China.
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4
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Zhang C, Wu M, Hu S, Shi S, Duan Y, Hu W, Li Y. Label-Free, High-Throughput, Sensitive, and Logical Analysis Using Biomimetic Array Based on Stable Luminescent Copper Nanoclusters and Entropy-Driven Nanomachine. Anal Chem 2023; 95:11978-11987. [PMID: 37494597 DOI: 10.1021/acs.analchem.3c01650] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/28/2023]
Abstract
The development of an array for high-throughput and logical analysis of biomarkers is significant for disease diagnosis. DNA-templated copper nanoclusters (CuNCs) have a strong potential to serve as a label-free photoluminescence source in array platforms, but their luminescent stability and sensitivity need to be improved. Herein, we report a facile, sensitive, and robust biomimetic array assay by integrating with stable luminescent CuNCs and entropy-driven nanomachine (EDN). In this strategy, the luminescent stability of CuNCs was improved by adding fructose in CuNCs synthesis to offer a reliable label-free signal. Meanwhile, the DNA template for CuNCs synthesis was introduced into EDN with excellent signal amplification ability, in which the reaction triggered by target miRNA would cause the blunt/protruding conformation change of 3'-terminus accompanied by the production or loss of luminescence. In addition, a biomimetic array fabricated by photonic crystals (PCs) physically enhanced the emitted luminescent signal of CuNCs and achieved high-throughput signal readout by a microplate reader. The proposed assay can isothermally detect as low as 4.5 pM of miR-21. Moreover, the logical EDN was constructed to achieve logical analysis of multiple miRNAs by "AND" or "OR" logic gate operation. Therefore, the proposed assay has the advantages of label-free property, high sensitivity, flexible design, and high-throughput analysis, which provides ideas for developing a new generation of facile and smart platforms in the fields of biological analysis and clinical application.
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Affiliation(s)
- Chuyan Zhang
- State Key Laboratory of Respiratory Health and Multimorbidity, Precision Medicine Center, Medical Equipment Innovation Research Center, Med-X Center for Manufacturing, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, P.R. China
| | - Mengfan Wu
- Research Center of Analytical Instrumentation, School of Mechanical Engineering, Sichuan University, Chengdu, Sichuan 610065, P.R. China
| | - Shunming Hu
- West China School of Public Health and West China Fourth Hospital, Sichuan University, Chengdu, Sichuan 610041, P.R. China
| | - Shaorui Shi
- State Key Laboratory of Respiratory Health and Multimorbidity, Department of Laboratory Medicine, Precision Medicine Center, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, P.R. China
| | - Yixiang Duan
- Research Center of Analytical Instrumentation, School of Mechanical Engineering, Sichuan University, Chengdu, Sichuan 610065, P.R. China
| | - Wenchuang Hu
- State Key Laboratory of Respiratory Health and Multimorbidity, Precision Medicine Center, Medical Equipment Innovation Research Center, Med-X Center for Manufacturing, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, P.R. China
| | - Yongxin Li
- West China School of Public Health and West China Fourth Hospital, Sichuan University, Chengdu, Sichuan 610041, P.R. China
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5
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Li P, Xie Z, Zhuang L, Deng L, Huang J. DNA-templated copper nanocluster: A robust and universal fluorescence switch for bleomycin assay. Int J Biol Macromol 2023; 234:123756. [PMID: 36812975 DOI: 10.1016/j.ijbiomac.2023.123756] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2022] [Revised: 02/12/2023] [Accepted: 02/14/2023] [Indexed: 02/22/2023]
Abstract
Bleomycin (BLM) is widely utilized for cancer treatment due to the outstanding antitumor activity, but BLM with imprecisely controlled dosage may lead to lethal consequences. It is thus a profound task to accurately monitor the BLM levels in clinical settings. Herein, we propose a straightforward, convenient, and sensitive sensing method for BLM assay. Poly-T DNA-templated copper nanoclusters (CuNCs) are fabricated with strong fluorescence emission and uniform size distribution and served as fluorescence indicators for BLM. The high binding affinity of BLM for Cu2+makes it able to inhibit fluorescence signals generated from CuNCs. This is the underlying mechanism rarely explored and can be utilized for effective BLM detection. A detection limit of 0.27 μM (according to 3σ/s rule) is achieved in this work. And the precision, producibility, and practical useability are also confirmed with satisfactory results. Furthermore, the accuracy of the method is verified by high-performance liquid chromatography (HPLC). To sum up, the established strategy in this work exhibits the advantages of convenience, rapidness, low cost, and high precision. The construction of BLM biosensors is important to achieve the best therapeutic effect with minimal toxicity, which opens a new avenue for monitoring antitumor drugs in clinical settings.
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Affiliation(s)
- Peng Li
- School of Biomedical Engineering, Southern Medical University, Guangzhou 510515, PR China; Department of Critical Care Medicine, Affiliated Hospital of Guangdong Medical University, Zhanjiang 524000, PR China
| | - Zhuohao Xie
- School of Biomedical Engineering, Southern Medical University, Guangzhou 510515, PR China; Department of Critical Care Medicine, Affiliated Hospital of Guangdong Medical University, Zhanjiang 524000, PR China
| | - Liuyan Zhuang
- School of Biomedical Engineering, Southern Medical University, Guangzhou 510515, PR China
| | - Liehua Deng
- Department of Critical Care Medicine, Affiliated Hospital of Guangdong Medical University, Zhanjiang 524000, PR China.
| | - Jiahao Huang
- School of Biomedical Engineering, Southern Medical University, Guangzhou 510515, PR China; Department of Critical Care Medicine, Affiliated Hospital of Guangdong Medical University, Zhanjiang 524000, PR China.
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6
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Zhan S, Jiang J, Zeng Z, Wang Y, Cui H. DNA-templated coinage metal nanostructures and their applications in bioanalysis and biomedicine. Coord Chem Rev 2022. [DOI: 10.1016/j.ccr.2021.214381] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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7
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Tiwari N, Mishra RK, Gupta S, Srivastava R, Aggarwal S, Bandyopadhyay P, Munde M. Synthetic Tunability and Biophysical Basis for Fabricating Highly Fluorescent and Stable DNA Copper Nanoclusters. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2021; 37:9385-9395. [PMID: 34313447 DOI: 10.1021/acs.langmuir.1c00949] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
The real motivation in the present work is to tune the synthesis variables that can result in a highly fluorescent and stable DNA copper nanocluster (CuNC) and also to understand the intricate mechanism behind this process. Here, carefully optimized concentrations of various reactants enabled the creation of a DNA-encapsulated CuNC for AT-DNA, displaying a size of <1.0 nm as confirmed by transmission electron microscopy and dynamic light scattering. The extremely small size of the AT-DNACuNC supports the discrete electronic transitions, also characterized by an exceptionally strong negative circular dichroism (CD) band around 350 nm, whose intensity is well correlated with the observed strong fluorescence emission intensity. This remarkably strong CD can open new applications in the detection and quantification of a specific DNACuNC. Further, time-dependent fluorescence analysis suggested stronger photostabilization of these DNACuNCs. The simulation study, based on Cu ion distribution, explained how AT-DNA is a better candidate for NC formation than GC-DNA. In conclusion, the better-tuned synthesis procedure has resulted in a highly compact, well-defined three-dimensional conformation that promotes a more favorable microenvironment to sequester a DNA-based CuNC with high brightness and outstanding photostability.
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Affiliation(s)
- Neha Tiwari
- School of Physical Sciences, Jawaharlal Nehru University, New Delhi 110067, India
| | - Rakesh Kumar Mishra
- School of Computational and Integrative Sciences, Jawaharlal Nehru University, New Delhi 110067, India
| | - Sakshi Gupta
- School of Physical Sciences, Jawaharlal Nehru University, New Delhi 110067, India
| | - Rakesh Srivastava
- School of Computational and Integrative Sciences, Jawaharlal Nehru University, New Delhi 110067, India
| | - Soumya Aggarwal
- School of Physical Sciences, Jawaharlal Nehru University, New Delhi 110067, India
| | - Pradipta Bandyopadhyay
- School of Computational and Integrative Sciences, Jawaharlal Nehru University, New Delhi 110067, India
| | - Manoj Munde
- School of Physical Sciences, Jawaharlal Nehru University, New Delhi 110067, India
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8
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Wang HB, Mao AL, Tao BB, Zhang HD, Xiao ZL, Liu YM. L-Histidine-DNA interaction: a strategy for the improvement of the fluorescence signal of poly(adenine) DNA-templated gold nanoclusters. Mikrochim Acta 2021; 188:198. [PMID: 34041600 DOI: 10.1007/s00604-021-04853-7] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2020] [Accepted: 05/11/2021] [Indexed: 11/25/2022]
Abstract
An interesting phenomenon is described that the fluorescence signal of poly(adenine) (A) DNA-templated gold nanoclusters (AuNCs) is greatly improved in the presence of L-histidine by means of L-histidine-DNA interaction. The modified nanoclusters display strong fluorescence emission with excitation/emission maxima at 290/475 nm. The fluorescence quantum yield (QY) is improved from 1.9 to 6.5%. Fluorescence enhancement is mainly ascribed to the L-histidine-DNA interaction leading to conformational changes of the poly(A) DNA template, which offer a better microenvironment to protect AuNCs. The assay enables L-histidine to be determined with good sensitivity and a linear response that covers the 1 to 50 nM L-histidine concentration range with a 0.3 nM limit of detection. The proposed method has been applied to the determination of imidazole-containing drugs in pharmaceutical samples. A turn-on fluorescent method has been designed for the sensitive detection of L-histidine as well as imidazole-containing drugs on the basis of the L-histidine-DNA interaction.
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Affiliation(s)
- Hai-Bo Wang
- College of Chemistry and Chemical Engineering, Institute for Conservation and Utilization of Agro-bioresources in Dabie Mountains, Xinyang Normal University, Xinyang, 464000, People's Republic of China.
| | - An-Li Mao
- College of Chemistry and Chemical Engineering, Institute for Conservation and Utilization of Agro-bioresources in Dabie Mountains, Xinyang Normal University, Xinyang, 464000, People's Republic of China
| | - Bei-Bei Tao
- College of Chemistry and Chemical Engineering, Institute for Conservation and Utilization of Agro-bioresources in Dabie Mountains, Xinyang Normal University, Xinyang, 464000, People's Republic of China
| | - Hong-Ding Zhang
- College of Chemistry and Chemical Engineering, Institute for Conservation and Utilization of Agro-bioresources in Dabie Mountains, Xinyang Normal University, Xinyang, 464000, People's Republic of China
| | - Zhong-Liang Xiao
- School of Chemistry and Biological Engineering, Changsha University of Science and Technology, Changsha, 410114, People's Republic of China
| | - Yan-Ming Liu
- College of Chemistry and Chemical Engineering, Institute for Conservation and Utilization of Agro-bioresources in Dabie Mountains, Xinyang Normal University, Xinyang, 464000, People's Republic of China
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9
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Song L, Manno R, Ranjan P, Sebastian V, Irusta S, Mallada R, Van Meervelt L, Santamaria J, Van der Eycken EV. Preparation of Cu cluster catalysts by simultaneous cooling-microwave heating: application in radical cascade annulation. NANOSCALE ADVANCES 2021; 3:1087-1095. [PMID: 36133300 PMCID: PMC9417637 DOI: 10.1039/d0na00980f] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/24/2020] [Accepted: 01/09/2021] [Indexed: 06/16/2023]
Abstract
One of the hallmarks of microwave irradiation is its selective heating mechanism. In the past 30 years, alternative designs of chemical reactors have been introduced, where the microwave (MW) absorber occupies a limited reactor volume but the surrounding environment is MW transparent. This advantage results in a different heating profile or even the possibility to quickly cool down the system. Simultaneous cooling-microwave heating has been largely adopted for organic chemical transformations. However, to the best of our knowledge there are no reports of its application in the field of nanocluster synthesis. In this work, we propose an innovative one-pot procedure for the synthesis of Cu nanoclusters. The cluster nucleation was selectively MW-activated inside the pores of a highly ordered mesoporous substrate. Once the nucleation event occurred, the crystallization reaction was instantaneously quenched, precluding the growth events and favoring the production of Cu clusters with a homogenous size distribution. Herein, we demonstrated that Cu nanoclusters could be successfully adopted for radical cascade annulations of N-alkoxybenzamides, resulting in various tricyclic and tetracyclic isoquinolones, which are widely present in lots of natural products and bioactive compounds. Compared to reported homogeneous methods, supported Cu nanoclusters provide a better platform for a green, sustainable and efficient heterogeneous approach for the synthesis of tricyclic and tetracyclic isoquinolones, avoiding a variety of toxic waste/byproducts and metal contamination in the final products.
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Affiliation(s)
- Liangliang Song
- Laboratory for Organic & Microwave-Assisted Chemistry (LOMAC), Department of Chemistry, KU Leuven Celestijnenlaan 200F 3001 Leuven Belgium
| | - Roberta Manno
- Instituto de Nanociencia y Materiales de Aragón (INMA), CSIC-Universidad de Zaragoza Zaragoza 50009 Spain
- Department of Chemical & Environmental Engineering, Edificio I+D+i Campus Rio Ebro, C/MarianoEsquillor s/n 50018 Zaragoza Spain
| | - Prabhat Ranjan
- Laboratory for Organic & Microwave-Assisted Chemistry (LOMAC), Department of Chemistry, KU Leuven Celestijnenlaan 200F 3001 Leuven Belgium
| | - Victor Sebastian
- Instituto de Nanociencia y Materiales de Aragón (INMA), CSIC-Universidad de Zaragoza Zaragoza 50009 Spain
- Department of Chemical & Environmental Engineering, Edificio I+D+i Campus Rio Ebro, C/MarianoEsquillor s/n 50018 Zaragoza Spain
- Networking Research Center CIBER-BBN 28029 Madrid Spain
| | - Silvia Irusta
- Instituto de Nanociencia y Materiales de Aragón (INMA), CSIC-Universidad de Zaragoza Zaragoza 50009 Spain
- Department of Chemical & Environmental Engineering, Edificio I+D+i Campus Rio Ebro, C/MarianoEsquillor s/n 50018 Zaragoza Spain
- Networking Research Center CIBER-BBN 28029 Madrid Spain
| | - Reyes Mallada
- Instituto de Nanociencia y Materiales de Aragón (INMA), CSIC-Universidad de Zaragoza Zaragoza 50009 Spain
- Department of Chemical & Environmental Engineering, Edificio I+D+i Campus Rio Ebro, C/MarianoEsquillor s/n 50018 Zaragoza Spain
- Networking Research Center CIBER-BBN 28029 Madrid Spain
| | - Luc Van Meervelt
- Biomolecular Architecture, Department of Chemistry, KU Leuven Celestijnenlaan 200F 3001 Leuven Belgium
| | - Jesús Santamaria
- Instituto de Nanociencia y Materiales de Aragón (INMA), CSIC-Universidad de Zaragoza Zaragoza 50009 Spain
- Department of Chemical & Environmental Engineering, Edificio I+D+i Campus Rio Ebro, C/MarianoEsquillor s/n 50018 Zaragoza Spain
- Networking Research Center CIBER-BBN 28029 Madrid Spain
| | - Erik V Van der Eycken
- Laboratory for Organic & Microwave-Assisted Chemistry (LOMAC), Department of Chemistry, KU Leuven Celestijnenlaan 200F 3001 Leuven Belgium
- Peoples' Friendship University of Russia (RUDN University) Miklukho-Maklaya Street 6 Moscow 117198 Russia
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10
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Kim S, Park KS. Highly specific nuclear labeling via in situ formation of fluorescent copper nanoparticles. NANOSCALE 2021; 13:81-84. [PMID: 33351013 DOI: 10.1039/d0nr06657e] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
When imaging cells, nuclear counterstaining is imperative; however, many commercial nuclear-staining dyes based on nucleic acid intercalation result in nonspecific signals in the cytoplasm. Here, we propose a new strategy that stains the nucleus with high specificity by in situ formation of DNA-templated copper nanoparticles (CuNPs). We demonstrated that genomic DNA in the nucleus enabled rapid formation of highly fluorescent CuNPs immediately following addition of a copper ion source and ascorbate as a reducing agent. Moreover, we found that RNA and mitochondrial DNA, largely responsible for nonspecific cytoplasmic signals from commercial nuclear-staining dyes, did not mediate the formation of the highly fluorescent CuNPs, resulting in highly specific nuclear staining at a reduced cost relative to commercially available methods. Furthermore, we verified the compatibility of the proposed method with other fluorescence-labeling techniques. These results demonstrated the efficacy of this method and its promise as a powerful tool for cell imaging.
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Affiliation(s)
- Seokjoon Kim
- Department of Biological Engineering, College of Engineering, Konkuk University, Seoul 05029, Republic of Korea.
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11
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Wang HB, Mao AL, Tao BB, Zhang HD, Liu YM. Fabrication of multiple molecular logic gates made of fluorescent DNA-templated Au nanoclusters. NEW J CHEM 2021. [DOI: 10.1039/d0nj06192a] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
A universal platform of label-free multiple molecular logic gates have been constructed by taking the advantage of DNA-AuNCs.
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Affiliation(s)
- Hai-Bo Wang
- College of Chemistry and Chemical Engineering
- Institute for Conservation and Utilization of Agro-Bioresources in Dabie Mountains
- Xinyang Normal University
- Xinyang 464000
- China
| | - An-Li Mao
- College of Chemistry and Chemical Engineering
- Institute for Conservation and Utilization of Agro-Bioresources in Dabie Mountains
- Xinyang Normal University
- Xinyang 464000
- China
| | - Bei-Bei Tao
- College of Chemistry and Chemical Engineering
- Institute for Conservation and Utilization of Agro-Bioresources in Dabie Mountains
- Xinyang Normal University
- Xinyang 464000
- China
| | - Hong-Ding Zhang
- College of Chemistry and Chemical Engineering
- Institute for Conservation and Utilization of Agro-Bioresources in Dabie Mountains
- Xinyang Normal University
- Xinyang 464000
- China
| | - Yan-Ming Liu
- College of Chemistry and Chemical Engineering
- Institute for Conservation and Utilization of Agro-Bioresources in Dabie Mountains
- Xinyang Normal University
- Xinyang 464000
- China
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12
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Wang HB, Mao AL, Li YH, Gan T, Liu YM. A turn-on fluorescence strategy for biothiols determination by blocking Hg(II)-mediated fluorescence quenching of adenine-rich DNA-templated gold nanoclusters. LUMINESCENCE 2020; 35:1296-1303. [PMID: 32510805 DOI: 10.1002/bio.3891] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2020] [Revised: 05/12/2020] [Accepted: 06/03/2020] [Indexed: 01/27/2023]
Abstract
Fluorescent adenine (A)-rich DNA-templated gold nanoclusters were demonstrated to be a novel probe for determination of biothiols (including cysteine, glutathione, and homocysteine). Fluorescence intensity of adenine-rich DNA-templated gold nanoclusters could be greatly quenched by Hg(II) ions through the formation of a gold nanoclusters-Hg(II) system. When biothiols (cysteine as the model) were introduced into the system, the fluorescence intensity recovered due to the formation of a more stable Hg(II)-thiol coordination complex using Hg-S metal-ligand bonds, which inhibited the Hg(II)-mediated fluorescence quenching of adenine-rich DNA-templated gold nanoclusters. Based on this fluorescence phenomenon, an on-off-on fluorescence strategy was designed for the sensitive determination of biothiols. The method allowed sensitive detection of cysteine with a linear detection range from 100 nM to 5 μM and a limit of detection of 30 nM. Additionally, the assay can be applied for detection of biothiol levels in human plasma samples. Therefore, it can provide a simple and rapid fluorescent platform for biothiol detection.
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Affiliation(s)
- Hai-Bo Wang
- College of Chemistry and Chemical Engineering, Institute for Conservation and Utilization of Agro-bioresources in Dabie Mountains, Xinyang Normal University, Xinyang, China
| | - An-Li Mao
- College of Chemistry and Chemical Engineering, Institute for Conservation and Utilization of Agro-bioresources in Dabie Mountains, Xinyang Normal University, Xinyang, China
| | - Yong-Hong Li
- School of Public Health, Ningxia Medical University, Yinchuan, China
| | - Tian Gan
- College of Chemistry and Chemical Engineering, Institute for Conservation and Utilization of Agro-bioresources in Dabie Mountains, Xinyang Normal University, Xinyang, China
| | - Yan-Ming Liu
- College of Chemistry and Chemical Engineering, Institute for Conservation and Utilization of Agro-bioresources in Dabie Mountains, Xinyang Normal University, Xinyang, China
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13
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Wu XM, Zhang JH, Feng ZS, Chen WX, Zhang F, Li Y. An ultra-sensitive "turn-off" fluorescent sensor for the trace detection of rifampicin based on glutathione-stabilized copper nanoclusters. Analyst 2020; 145:1227-1235. [PMID: 31898707 DOI: 10.1039/c9an01994d] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Rifampicin is a common antibiotic used in human and veterinary medicine to treat tuberculosis and other diseases caused by numerous pathogenic bacteria. However, the excessive or improper use of rifampicin usually leads to a series of problems, including bacterial resistance, excessive drug-resistance and water pollution. Thus, it is of great importance to develop selective and sensitive assays for monitoring rifampicin in biological systems. In this study, we designed a fluorescence "turn-off" strategy for the trace detection of rifampicin based on a glutathione-stabilized copper nanoclusters (GSH-Cu NC) sensor. In an aqueous solution, the fluorescence of the GSH-Cu NCs at 632 nm can be quenched effectively and selectively by rifampicin due to the inner-filter effect (IFE) of fluorescence mechanism. Distinctively, this GSH-Cu NC sensor exhibited excellent fluorescence sensing capability for the trace detection of rifampicin with a very low limit of detection (LOD) of 16 pM in a wide linear range from 50 to 10 000 pM. It is not only more sensitive than the other methods previously reported for the detection of rifampicin, but also has an outstanding selectivity and strong anti-interference in complex samples. Furthermore, the as-developed GSH-Cu NCs were also successfully applied to determine rifampicin in different real samples with quantitative spike recoveries ranging from 97% to 105%.
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Affiliation(s)
- Xiao-Man Wu
- Tianjin Key laboratory of Structure and Performance for Functional Molecules, MOE Key Laboratory of Inorganic-Organic Hybrid Functional Material Chemistry, College of Chemistry, Tianjin Normal University, 393 Binshui West Road, Tianjin 300387, PR China.
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14
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Liu C, Cai Y, Wang J, Liu X, Ren H, Yan L, Zhang Y, Yang S, Guo J, Liu A. Facile Preparation of Homogeneous Copper Nanoclusters Exhibiting Excellent Tetraenzyme Mimetic Activities for Colorimetric Glutathione Sensing and Fluorimetric Ascorbic Acid Sensing. ACS APPLIED MATERIALS & INTERFACES 2020; 12:42521-42530. [PMID: 32844641 DOI: 10.1021/acsami.0c11983] [Citation(s) in RCA: 79] [Impact Index Per Article: 19.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Nanozymes are artificial enzymes, which can substitute traditional biological enzymes for multifield applications. However, to date, it remains challenging to search novel mimic enzymes or multienzyme mimics. Herein, a facile and green method for preparing monodisperse, homogeneous copper nanoclusters (Cu NCs) with smaller size was developed, which used cysteamine as a template and hydrazine hydrate as a reductant to reduce Cu2+. The as-prepared Cu NCs exhibited excellent tetraenzyme-like activities, including peroxidase (POD)-, catalase (CAT)-, superoxide dismutase (SOD)-, and ascorbic acid oxidase (AAO)-mimic activities. The mechanisms, kinetics, and catalytic performances of Cu NCs were systematically studied. Moreover, based on the POD-like activity of Cu NCs, sensitive and simple colorimetric sensing glutathione (GSH) was explored, with the low limit of detection of 0.89 μM GSH (S/N = 3). Additionally, a novel fluorimetric ascorbic acid (AA) sensor was developed with the linear range of 0.5-30 μM and limit of detection (LOD) of 0.144 μM, on the basis of the principle that AA is oxidized to dehydroascorbic acid (DHAA) specifically catalyzed by the AAO-like activity of Cu NCs, while DHAA can further react with o-phenylenediamine (OPDA) to generate a highly fluorescent quinoxaline (DFQ) derivative. The as-proposed colorimetric GSH sensor and the fluorimetric AA sensor were capable of detecting GSH and AA, respectively, in real samples accurately and reproducibly. Thus, the Cu NCs-based multienzyme mimic is a promising candidate for biocatalysis and biosensing.
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Affiliation(s)
- Chongyang Liu
- School of Pharmacy, Medical College, and Institute for Chemical Biology & Biosensing, and College of Life Sciences, Qingdao University, 308 Ningxia Road, Qingdao 266071, China
| | - Yuanyuan Cai
- School of Pharmacy, Medical College, and Institute for Chemical Biology & Biosensing, and College of Life Sciences, Qingdao University, 308 Ningxia Road, Qingdao 266071, China
| | - Jin Wang
- Qingdao Institute for Food and Drug Control, 7 Longde Road, Qingdao 266073, China
| | - Xuan Liu
- School of Pharmacy, Medical College, and Institute for Chemical Biology & Biosensing, and College of Life Sciences, Qingdao University, 308 Ningxia Road, Qingdao 266071, China
| | - Han Ren
- School of Pharmacy, Medical College, and Institute for Chemical Biology & Biosensing, and College of Life Sciences, Qingdao University, 308 Ningxia Road, Qingdao 266071, China
| | - Lu Yan
- School of Pharmacy, Medical College, and Institute for Chemical Biology & Biosensing, and College of Life Sciences, Qingdao University, 308 Ningxia Road, Qingdao 266071, China
| | - Yujiao Zhang
- School of Pharmacy, Medical College, and Institute for Chemical Biology & Biosensing, and College of Life Sciences, Qingdao University, 308 Ningxia Road, Qingdao 266071, China
| | - Shuqing Yang
- School of Pharmacy, Medical College, and Institute for Chemical Biology & Biosensing, and College of Life Sciences, Qingdao University, 308 Ningxia Road, Qingdao 266071, China
| | - Jing Guo
- Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao 266101, China
| | - Aihua Liu
- School of Pharmacy, Medical College, and Institute for Chemical Biology & Biosensing, and College of Life Sciences, Qingdao University, 308 Ningxia Road, Qingdao 266071, China
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15
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Guo Y, Shi S, Fan C, Jin D. Fluorescent determination of fluazinam with polyethyleneimine-capped copper nanoclusters. Chem Phys Lett 2020. [DOI: 10.1016/j.cplett.2020.137748] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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16
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Li S, Zhao J, Guo Y, Mei Y, Yuan B, Gan N, Zhang J, Hu J, Hou H. Influence of the introduction of a triphenylphosphine group on the anticancer activity of a copper complex. J Inorg Biochem 2020; 210:111102. [PMID: 32574870 DOI: 10.1016/j.jinorgbio.2020.111102] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2020] [Revised: 04/29/2020] [Accepted: 04/30/2020] [Indexed: 12/20/2022]
Abstract
Aiming at obtaining new copper complexes with good cytotoxicity against cancer cells, triphenylphosphine (TPP) was introduced to obtain insight into the influence of the co-ligands. In this paper, two copper complexes, Cu(2-pbmq)(CH3OH)Br2 (1) and [Cu(2-pbmq)(TPP)Br]2 (2) were designed, synthesized, and characterized by X-ray crystallography, 2-((2-(pyrazin-2-yl)-1H-benzo[d]imidazol-1-yl)methyl))quinolone (2-pbmq), to investigate the influence of the TPP group on the anticancer activity of the metal complex. Although the presence of the TPP group diminished the intensity of the interaction properties of the complex with DNA, the in vitro anticancer activity and cellular uptake of the TPP-containing complex were markedly superior to those of its TPP-lacking counterpart. Detailed studies on the more potently cytotoxic complex 2 revealed that it accumulated in nucleus, arrested the cell cycle at the G0-G1 phase, causing mitochondrial dysfunction, involving the potential simultaneous mitochondrial membrane collapse, cellular ATP level depletion, and Ca2+ leakage, eventually inducing cell apoptosis. In summary, the introduction of a TPP group enhances the biological activity and cytotoxicity of the complex.
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Affiliation(s)
- Sen Li
- College of Chemistry, Zhengzhou University, Zhengzhou 450001, Henan, PR China
| | - Jin'an Zhao
- College of Material and Chemical Engineering, Henan University of Urban Construction, Pingdingshan 467036, Henan, PR China.
| | - Yan Guo
- College of Material and Chemical Engineering, Henan University of Urban Construction, Pingdingshan 467036, Henan, PR China
| | - Yameng Mei
- College of Chemistry, Zhengzhou University, Zhengzhou 450001, Henan, PR China
| | - Bangpeng Yuan
- College of Chemistry, Zhengzhou University, Zhengzhou 450001, Henan, PR China
| | - Ning Gan
- College of Material and Chemical Engineering, Henan University of Urban Construction, Pingdingshan 467036, Henan, PR China
| | - Junshuai Zhang
- College of Material and Chemical Engineering, Henan University of Urban Construction, Pingdingshan 467036, Henan, PR China
| | - Jiyong Hu
- College of Material and Chemical Engineering, Henan University of Urban Construction, Pingdingshan 467036, Henan, PR China.
| | - Hongwei Hou
- College of Chemistry, Zhengzhou University, Zhengzhou 450001, Henan, PR China
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18
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Abstract
The development of the clustered regularly interspaced short palindromic repeat (CRISPR)/Cas9 system has become a revolutionary step for genome engineering because it enables modification of target genomes. However, many biological applications with the CRISPR/Cas9 system are impeded by off-target effects and loci-dependent nuclease activity with various sgRNAs. Commonly used label-strategy-based CRISPR/Cas9 assays often suffer from possible disturbances to Cas9 activity and a time-consuming labeling procedure. Herein, we for the first time propose a DNA-templated CuNPs-based label-free CRISPR/Cas9 assay, with a low LOD of 0.13 nM and rapid detection in 35 min after CRISPR/Cas9 cleavage. Additionally, the site specificity of the DNA substrate was demonstrated. Through the proposed label-free strategy, a single-base change at a specific loci could lead to a significant reduction of the Cas9 cleavage effect, while the other common genetic modifications might be accepted by the CRIPR/Cas9 system. Therefore, the proposed label-free Cas9 assay may provide a new paradigm for the a priori in vitro CRISPR/Cas9 assay and exploration for in vivo biological applications.
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Affiliation(s)
- Jianyu Hu
- College of Architecture and Environment , Sichuan University , Chengdu 610064 , China
- Key Laboratory of Green Chemistry and Technology, Ministry of Education, College of Chemistry , Sichuan University , Chengdu 610064 , China
| | - Min Jiang
- Key Laboratory of Green Chemistry and Technology, Ministry of Education, College of Chemistry , Sichuan University , Chengdu 610064 , China
| | - Rui Liu
- Key Laboratory of Green Chemistry and Technology, Ministry of Education, College of Chemistry , Sichuan University , Chengdu 610064 , China
| | - Yi Lv
- Analytical and Testing Center , Sichuan University , Chengdu 610064 , China
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19
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Wang M, Kong D, Su D, Liu Y, Su X. Ratio fluorescence analysis of T4 polynucleotide kinase activity based on the formation of a graphene quantum dot-copper nanocluster nanohybrid. NANOSCALE 2019; 11:13903-13908. [PMID: 31304938 DOI: 10.1039/c9nr02901j] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
In this work, a ratio fluorescence method was developed for T4 polynucleotide kinase (PNK) activity analysis based on the formation of a dual-emitting graphene quantum dot-copper nanocluster (GQD-CuNC) nanohybrid. An amino capped single-strand DNA (ssDNA) was firstly used to modify GQDs (GQD-ssDNA) and then hybridize with its complementary DNA strand to form double-stranded DNA functionalized GQDs (GQD-dsDNA). The dsDNA of GQD-dsDNA can act as an effective template for the preparation of CuNCs with fluorescence emission at 594 nm. When the dsDNA of GQD-dsDNA was phosphorylated through T4 PNK and subsequently degraded via λ exonuclease (λ exo) to produce mononucleotides and GQD-ssDNA, the formation of fluorescence CuNCs in GQD-CuNCs was blocked due to the lack of an effective dsDNA substrate, during which the fluorescence of GQDs at 446 nm in the nanohybrid was mostly not influenced. Thus, with the CuNCs serving as the reporter and GQDs as the reference signal, T4 PNK activity can be monitored through the change in the fluorescence intensity ratio (F594/F446) in the range of 0.01-10 U mL-1 with a detection limit (LOD) of 0.0037 U mL-1. Furthermore, the practicality of this T4 PNK activity analysis strategy in a complex sample was tested in cell lysates.
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Affiliation(s)
- Mengke Wang
- Department of Analytical Chemistry, College of Chemistry, Jilin University, Changchun 130012, PR China.
| | - Deshuai Kong
- State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun 130012, PR China
| | - Dandan Su
- Department of Analytical Chemistry, College of Chemistry, Jilin University, Changchun 130012, PR China.
| | - Yang Liu
- Department of Analytical Chemistry, College of Chemistry, Jilin University, Changchun 130012, PR China.
| | - Xingguang Su
- Department of Analytical Chemistry, College of Chemistry, Jilin University, Changchun 130012, PR China.
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20
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Wang HB, Bai HY, Mao AL, Gan T, Liu YM. Poly(adenine)-templated fluorescent Au nanoclusters for the rapid and sensitive detection of melamine. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2019; 219:375-381. [PMID: 31059889 DOI: 10.1016/j.saa.2019.04.075] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/08/2019] [Revised: 04/10/2019] [Accepted: 04/27/2019] [Indexed: 06/09/2023]
Abstract
A rapid and label-free fluorescence sensing strategy has been established for the sensitive determination of melamine (MA) on the basis of poly(adenine) (poly (A))-templated Au nanoclusters (AuNCs). The poly(A)-templated AuNCs possessed excellent luminescence and photo-stability. In the presence of Hg2+, the luminescence of AuNCs was quenched by Hg2+ through the metallophilic interactions between Au+ and Hg2+. When melamine was introduced, the fluorescence intensity of sensing system could be recovered. There was a greater coordination interaction between Hg2+ and melamine, which blocked the Hg2+-mediated fluorescence quenching of AuNCs. The assay allowed sensitive determination of melamine with a linear detection range from 50 nM to 100 μM. The limit of detection was as low as 16.6 nM. Furthermore, the label-free strategy was successfully employed for the detection of melamine concentration in real samples.
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Affiliation(s)
- Hai-Bo Wang
- College of Chemistry and Chemical Engineering, Institute for Conservation and Utilization of Agro-bioresources in Dabie Mountains, Xinyang Normal University, Xinyang 464000, PR China.
| | - Hong-Yu Bai
- College of Chemistry and Chemical Engineering, Institute for Conservation and Utilization of Agro-bioresources in Dabie Mountains, Xinyang Normal University, Xinyang 464000, PR China
| | - An-Li Mao
- College of Chemistry and Chemical Engineering, Institute for Conservation and Utilization of Agro-bioresources in Dabie Mountains, Xinyang Normal University, Xinyang 464000, PR China
| | - Tian Gan
- College of Chemistry and Chemical Engineering, Institute for Conservation and Utilization of Agro-bioresources in Dabie Mountains, Xinyang Normal University, Xinyang 464000, PR China.
| | - Yan-Ming Liu
- College of Chemistry and Chemical Engineering, Institute for Conservation and Utilization of Agro-bioresources in Dabie Mountains, Xinyang Normal University, Xinyang 464000, PR China
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21
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Chen C, Chen S, Shiddiky MJA, Chen C, Wu KC. DNA‐Templated Copper Nanoprobes: Overview, Feature, Application, and Current Development in Detection Technologies. CHEM REC 2019; 20:174-186. [DOI: 10.1002/tcr.201900022] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2019] [Revised: 06/22/2019] [Indexed: 12/22/2022]
Affiliation(s)
- Chung‐An Chen
- Institute of Applied MechanicsNational Taiwan University, No. 1, Sec. 4 Roosevelt Road Taipei 10617 Taiwan
| | - Shih‐Chia Chen
- Institute of Applied MechanicsNational Taiwan University, No. 1, Sec. 4 Roosevelt Road Taipei 10617 Taiwan
| | - Muhammad J. A. Shiddiky
- School of Environment and Science & Queensland Micro- and Nanotechnology CentreNathan campus, Griffith University 170 Kessels Road QLD 4111 Australia
| | - Chien‐Fu Chen
- Institute of Applied MechanicsNational Taiwan University, No. 1, Sec. 4 Roosevelt Road Taipei 10617 Taiwan
| | - Kevin C.‐W. Wu
- Department of Chemical EngineeringNational Taiwan University, No. 1, Sec. 4 Roosevelt Road Taipei 10617 Taiwan
- Division of Medical Engineering Research, National Health
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22
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Synthesis of DNA-templated copper nanoparticles with enhanced fluorescence stability for cellular imaging. Mikrochim Acta 2019; 186:479. [PMID: 31250120 DOI: 10.1007/s00604-019-3620-5] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2019] [Accepted: 06/15/2019] [Indexed: 12/14/2022]
Abstract
Fluorescence of DNA-templated copper nanoparticles (DNA-CuNPs) is not stable over time which limits applications in cellular imaging. This is due to the presence of oxygen during synthesis which oxidizes Cu(0) to Cu(II) and also produces the free hydroxyl radical. The authors have prepared DNA-CuNPs with enhanced temporal stability of fluorescence by optimizing the reaction conditions so as to minimize the deleterious effects of oxygen. The operational lifetime of DNA-CuNPs was increased from 25 min to 200 min. Fluorescence spectra of DNA-CuNPs in optimized condition show an emission peak at 650 nm when excited at 340 nm. DNA-CuNPs synthesized in this manner were used for cell imaging. As a proof of concept, the nucleus of a human colon cell line (HCT116) was stained. The method does not involve any chemicals other that copper sulfate and ascorbate. This new approach for generating DNA-CuNPs improves imaging of biological processes and provides a basis for developing other types of DNA-templated nanomaterials. Graphical abstract Schematic presentation of the formation of fluorescent DNA-templated copper nanoparticles (DNA-CuNPs). A large amount of ascorbate provides long operational lifetime for cellular imaging under the condition exposed to oxygen. *Asc- and **DHA stand for ascorbate and dehydroascorbic acid.
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23
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Liu R, Hu J, Chen Y, Jiang M, Lv Y. Label-Free Nuclease Assay with Long-Term Stability. Anal Chem 2019; 91:8691-8696. [DOI: 10.1021/acs.analchem.9b02467] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Rui Liu
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Jianyu Hu
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Yongxin Chen
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Min Jiang
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Yi Lv
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, China
- Analytical & Testing Center, Sichuan University, Chengdu 610064, China
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24
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Xiong Y, Zhang K, Gao B, Wu Y, Huang X, Lai W, Xiong Y, Liu Y. Fluorescence immunoassay through histone-ds-poly(AT)-templated copper nanoparticles as signal transductors for the sensitive detection of Salmonella choleraesuis in milk. J Dairy Sci 2019; 102:6047-6055. [PMID: 31103295 DOI: 10.3168/jds.2019-16472] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2019] [Accepted: 03/19/2019] [Indexed: 11/19/2022]
Abstract
The rapid and sensitive detection of foodborne pathogens is one of the most important issues in food safety control. In this work, we developed a novel fluorescence immunoassay method for the sensitive detection of Salmonella choleraesuis. The method uses the fluorescent signals of histone-ds-poly(AT)-templated copper nanoparticles (His-pAT CuNP) as signal transducers and glucose oxidase as an alternative for horseradish peroxidase for the generation of hydrogen peroxide (H2O2) through the catalysis of glucose. The H2O2 is then further converted into hydroxyl radical (·OH) by Fenton reagents. Owing to the ultrahigh sensitivity of His-pAT CuNP synthesis toward ·OH, the proposed fluorescence immunoassay method exhibited excellent sensitivity for S. choleraesuis, with a limit of detection of 8.04 × 101 cfu/mL, which is 3 orders of magnitude lower than that of the tetramethylbenzidine-based traditional immunoassay. The reliability of the proposed method was evaluated by using spiked milk samples with S. choleraesuis concentration ranging from 8.8 × 101 to 8.8 × 104 cfu/mL. The average recoveries for the intra- and inter-assay ranged from 73.52 to 96.59% and from 66.99 to 98.24% with a coefficient of variation from 6.85 to 31.26% and 5.46 to 17.99%, respectively. These results indicated that the proposed fluorescence immunoassay possesses a great potential for ultra-sensitive detection of foodborne pathogens in food safety control.
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Affiliation(s)
- Ying Xiong
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, P. R. China; Jiangxi Sino-German Joint Research Institute, Nanchang University, Nanchang 330047, P. R. China
| | - Kangkang Zhang
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, P. R. China
| | - Bao Gao
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, P. R. China; Jiangxi Sino-German Joint Research Institute, Nanchang University, Nanchang 330047, P. R. China
| | - Yunqing Wu
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, P. R. China; Jiangxi Sino-German Joint Research Institute, Nanchang University, Nanchang 330047, P. R. China
| | - Xiaolin Huang
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, P. R. China
| | - Weihua Lai
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, P. R. China
| | - Yonghua Xiong
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, P. R. China; Jiangxi Sino-German Joint Research Institute, Nanchang University, Nanchang 330047, P. R. China.
| | - Yang Liu
- Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences, Beijing 100193, P. R. China; Key Laboratory of Agro-products Quality and Safety Control in Storage and Transport Process, Ministry of Agriculture and Rural Affairs, Beijing 100193, P. R. China.
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25
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Qing Z, Bai A, Xing S, Zou Z, He X, Wang K, Yang R. Progress in biosensor based on DNA-templated copper nanoparticles. Biosens Bioelectron 2019; 137:96-109. [PMID: 31085403 DOI: 10.1016/j.bios.2019.05.014] [Citation(s) in RCA: 61] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2019] [Accepted: 05/06/2019] [Indexed: 02/01/2023]
Abstract
During the last decades, by virtue of their unique physicochemical properties and potential application in microelectronics, biosensing and biomedicine, metal nanomaterials (MNs) have attracted great research interest and been highly developed. Deoxyribonucleic acid (DNA) is a particularly interesting ligand for templating bottom-up nanopreparation, by virtue of its excellent properties including nanosized geometry structure, programmable and artificial synthesis, DNA-metal ion interaction and powerful molecular recognition. DNA-templated copper nanoparticles (DNA-CuNPs) has been developed in recent years. Because of its advantages including simple and rapid preparation, high efficiency, MegaStokes shifting and low biological toxicity, DNA-CuNPs has been highly exploited for biochemical sensing from 2010, especially as a label-free detection manner, holding advantages in multiple analytical technologies including fluorescence, electrochemistry, surface plasmon resonance, inductively coupled plasma mass spectrometry and surface enhanced Raman spectroscopy. This review comprehensively tracks the preparation of DNA-CuNPs and its application in biosensing, and highlights the potential development and challenges regarding this field, aiming to promote the advance of this fertile research area.
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Affiliation(s)
- Zhihe Qing
- Hunan Provincial Key Laboratory of Materials Protection for Electric Power and Transportation, Hunan Provincial Engineering Research Center for Food Processing of Aquatic Biotic Resources, School of Chemistry and Food Engineering, Changsha University of Science and Technology, Changsha, 410114, PR China.
| | - Ailing Bai
- Hunan Provincial Key Laboratory of Materials Protection for Electric Power and Transportation, Hunan Provincial Engineering Research Center for Food Processing of Aquatic Biotic Resources, School of Chemistry and Food Engineering, Changsha University of Science and Technology, Changsha, 410114, PR China
| | - Shuohui Xing
- Hunan Provincial Key Laboratory of Materials Protection for Electric Power and Transportation, Hunan Provincial Engineering Research Center for Food Processing of Aquatic Biotic Resources, School of Chemistry and Food Engineering, Changsha University of Science and Technology, Changsha, 410114, PR China
| | - Zhen Zou
- Hunan Provincial Key Laboratory of Materials Protection for Electric Power and Transportation, Hunan Provincial Engineering Research Center for Food Processing of Aquatic Biotic Resources, School of Chemistry and Food Engineering, Changsha University of Science and Technology, Changsha, 410114, PR China; State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, College of Biology, Key Laboratory for Bio-Nanotechnology and Molecular Engineering of Hunan Province, Hunan University, Changsha, 410082, People's Republic of China
| | - Xiaoxiao He
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, College of Biology, Key Laboratory for Bio-Nanotechnology and Molecular Engineering of Hunan Province, Hunan University, Changsha, 410082, People's Republic of China
| | - Kemin Wang
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, College of Biology, Key Laboratory for Bio-Nanotechnology and Molecular Engineering of Hunan Province, Hunan University, Changsha, 410082, People's Republic of China
| | - Ronghua Yang
- Hunan Provincial Key Laboratory of Materials Protection for Electric Power and Transportation, Hunan Provincial Engineering Research Center for Food Processing of Aquatic Biotic Resources, School of Chemistry and Food Engineering, Changsha University of Science and Technology, Changsha, 410114, PR China; State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, College of Biology, Key Laboratory for Bio-Nanotechnology and Molecular Engineering of Hunan Province, Hunan University, Changsha, 410082, People's Republic of China.
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26
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Wang HB, Bai HY, Mao AL, Liu YM. Poly(adenine) DNA-Templated Gold Nanocluster-Based Fluorescent Strategy for the Determination of Thiol-Containing Pharmaceuticals. ANAL LETT 2019. [DOI: 10.1080/00032719.2019.1609491] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Hai-Bo Wang
- College of Chemistry and Chemical Engineering, Institute for Conservation and Utilization of Agro-bioresources in Dabie Mountains, Xinyang Normal University, Xinyang, China
| | - Hong-Yu Bai
- College of Chemistry and Chemical Engineering, Institute for Conservation and Utilization of Agro-bioresources in Dabie Mountains, Xinyang Normal University, Xinyang, China
| | - An-Li Mao
- College of Chemistry and Chemical Engineering, Institute for Conservation and Utilization of Agro-bioresources in Dabie Mountains, Xinyang Normal University, Xinyang, China
| | - Yan-Ming Liu
- College of Chemistry and Chemical Engineering, Institute for Conservation and Utilization of Agro-bioresources in Dabie Mountains, Xinyang Normal University, Xinyang, China
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27
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Wang HB, Bai HY, Dong GL, Liu YM. DNA-templated Au nanoclusters coupled with proximity-dependent hybridization and guanine-rich DNA induced quenching: a sensitive fluorescent biosensing platform for DNA detection. NANOSCALE ADVANCES 2019; 1:1482-1488. [PMID: 36132614 PMCID: PMC9419426 DOI: 10.1039/c8na00278a] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/10/2018] [Accepted: 01/28/2019] [Indexed: 06/09/2023]
Abstract
In this paper, the fluorescence signal of poly(A) DNA-templated Au nanoclusters (AuNCs) is found to be greatly quenched by photoinduced electron transfer (PET) when they are close to guanine (G)-rich DNA. Based on the findings, we have designed a low-cost fluorescence biosensing strategy for the sensitive detection of DNA. Highly luminescent and photo-stable poly(A) DNA-AuNCs were utilized as the fluorescent indicator and G-rich DNA was utilized as the fluorescent quencher. In the absence of target DNA, DNA-AuNCs failed to hybridize with the G-rich DNA and did not form the duplex DNA structure. Strong fluorescence intensity at 475 nm was observed due to the DNA-AuNCs being far away from the G-rich DNA. However, in the presence of target DNA, the DNA-AuNCs together with G-rich DNA could hybridize with the target DNA, leading to the 5' terminus of the DNA-AuNCs and the 3' terminus of G-rich DNA being in close proximity and promoting the cooperative hybridization. Therefore, a "Y" junction structure was formed and the G-rich sequences were brought close to the AuNCs. Therefore, the fluorescence intensity of the sensing system decreased significantly. Taking advantage of the poly(A) DNA-templated Au nanoclusters and G-rich DNA proximity-induced quenching, the strategy could be extended to determine other biomolecules by designing appropriate sequences of DNA probes.
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Affiliation(s)
- Hai-Bo Wang
- College of Chemistry and Chemical Engineering, Institute for Conservation and Utilization of Agro-bioresources in Dabie Mountains, Xinyang Normal University Xinyang 464000 PR China +86 376 6391172 +86 376 6391172
| | - Hong-Yu Bai
- College of Chemistry and Chemical Engineering, Institute for Conservation and Utilization of Agro-bioresources in Dabie Mountains, Xinyang Normal University Xinyang 464000 PR China +86 376 6391172 +86 376 6391172
| | - Gao-Li Dong
- College of Chemistry and Chemical Engineering, Institute for Conservation and Utilization of Agro-bioresources in Dabie Mountains, Xinyang Normal University Xinyang 464000 PR China +86 376 6391172 +86 376 6391172
| | - Yan-Ming Liu
- College of Chemistry and Chemical Engineering, Institute for Conservation and Utilization of Agro-bioresources in Dabie Mountains, Xinyang Normal University Xinyang 464000 PR China +86 376 6391172 +86 376 6391172
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Chen J, Han T, Feng X, Wang B, Wang G. A poly(thymine)-templated fluorescent copper nanoparticle hydrogel-based visual and portable strategy for an organophosphorus pesticide assay. Analyst 2019; 144:2423-2429. [PMID: 30816405 DOI: 10.1039/c9an00017h] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Since fluorescence assays with high sensitivity for organophosphorus pesticides (OPs) are urgently required to protect the ecosystem and prevent disease, an environmentally friendly and label-free fluorescent probe is desirable. Herein, a poly-thymine30 DNA-templated copper nanoparticle (poly T30-Cu NPs) hydrogel fluorescent probe was explored for the construction of an OPs sensing platform via tyrosinase (TYR) enzyme-controlled quenching. Initially, TYR can efficiently quench the fluorescence of poly T30-Cu NPs; however, when OPs are mixed with a certain amount of TYR, the fluorescence of poly T30-Cu NPs can be recovered. Based on this phenomenon, we designed a functionalized hydrogel based on poly T30-Cu NPs for portable and visible detection of OPs with high sensitivity and selectivity. This proposed fluorescent platform was demonstrated to enable rapid detection of OPs (paraoxon as the model analyte) and provide excellent sensitivity with a detection limit of 3.33 × 10-5 ng μL-1 and a linear range of 1.0 × 10-4-1.0 ng μL-1. The fluorescent probe does not require a sophisticated synthesis and labeling process; in addition, it is environmentally friendly because of the presence of a biotemplate of DNA and biocompatible copper. Moreover, the functional hydrogel combines the features of portability, visualization, fast signal response and environmental anti-interference that make the proposed strategy more feasible in complex practical detection.
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Affiliation(s)
- Jihua Chen
- Key Laboratory of Chem-Biosensing, Anhui province, Key Laboratory of Functional Molecular Solids, Anhui province, College of Chemistry and Materials Science, Center for Nano Science and Technology, Anhui Normal University, Wuhu 241000, PR China
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Zhang X, Liu Q, Jin Y, Li B. Facile and Sensitive Fluorescence Assay of DNA Polymerase Activity Using Cu2+
and Ascorbate as Signal Developers. ChemistrySelect 2019. [DOI: 10.1002/slct.201803850] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Xingxing Zhang
- Key Laboratory of Analytical Chemistry for Life Science of Shaanxi Province; School of Chemistry & Chemical Engineering; Shaanxi Normal University; Xi'an 710062 China
| | - Qiang Liu
- Key Laboratory of Analytical Chemistry for Life Science of Shaanxi Province; School of Chemistry & Chemical Engineering; Shaanxi Normal University; Xi'an 710062 China
| | - Yan Jin
- Key Laboratory of Analytical Chemistry for Life Science of Shaanxi Province; School of Chemistry & Chemical Engineering; Shaanxi Normal University; Xi'an 710062 China
| | - Baoxin Li
- Key Laboratory of Analytical Chemistry for Life Science of Shaanxi Province; School of Chemistry & Chemical Engineering; Shaanxi Normal University; Xi'an 710062 China
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30
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Cao Q, Li J, Wang E. Recent advances in the synthesis and application of copper nanomaterials based on various DNA scaffolds. Biosens Bioelectron 2019; 132:333-342. [PMID: 30897540 DOI: 10.1016/j.bios.2019.01.046] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2018] [Revised: 01/12/2019] [Accepted: 01/15/2019] [Indexed: 12/29/2022]
Abstract
Fluorescent copper nanomaterials (CuNMs), including copper nanoparticles (CuNPs) and copper nanoclusters (CuNCs), become more and more popular with the abundant raw materials and low cost. A wide range of applications has been explored due to their fascinating properties such as low toxicity, remarkable water solubility, facile synthesis, large Stokes shifts, and good biocompatibility. As a kind of genetic material, DNA exhibits its molecular recognition function and diversity. The marriage between CuNMs and DNA endows DNA-templated CuNMs (DNA-CuNMs) with unique properties such as fluorescence, electrochemiluminescence and catalytic features. In this review, we summarize the synthesis and recent applications of DNA-CuNMs. Fluorescent CuNMs can be grown on various DNA scaffolds with special sequence design. T base plays an important role in the formation of CuNMs on DNA templates. These fluorescent DNA-CuNMs hold great prospect in logic gate construction, staining and biosensing of DNAs and RNAs, ions, proteins and enzymes, small molecules and so on.
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Affiliation(s)
- Qiao Cao
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022, PR China; University of the Chinese Academy of Sciences, Beijing 100049, PR China
| | - Jing Li
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022, PR China; University of the Chinese Academy of Sciences, Beijing 100049, PR China.
| | - Erkang Wang
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022, PR China; University of the Chinese Academy of Sciences, Beijing 100049, PR China.
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31
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Xiong Y, Gao B, Wu K, Wu Y, Chai Y, Huang X, Xiong Y. Fluorescence immunoassay based on the enzyme cleaving ss-DNA to regulate the synthesis of histone-ds-poly(AT) templated copper nanoparticles. NANOSCALE 2018; 10:19890-19897. [PMID: 30345445 DOI: 10.1039/c8nr06175k] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Herein, for the first time we report a novel competitive fluorescence immunoassay for the ultrasensitive detection of aflatoxin B1 (AFB1) using histone-ds-poly(AT) templated copper nanoparticles (His-pAT CuNPs) as the fluorescent indicator. In this immunoassay, glucose oxidase (Gox) was used as the carrier of the competing antigen to catalyze the formation of hydrogen peroxide (H2O2) from glucose. H2O2 was converted to a hydroxyl radical using Fenton's reagent, which further regulated the fluorescence signals of His-pAT CuNPs. Owing to the ultrahigh sensitivity of the ss-DNA to the hydroxyl radical, the proposed fluorescence immunoassay exhibited a favorable dynamic linear detection of AFB1 ranging from 0.46 pg mL-1 to 400 pg mL-1 with an good half maximal inhibitory concentration and limit of detection of 6.13 and 0.15 pg mL-1, respectively. The intra- and inter-assay showed that the average recoveries for AFB1 spiked corn samples ranged from 96.87% to 100.73% and 96.67% to 114.92%, respectively. The reliability of this method was further confirmed by adopting ultra-performance liquid chromatography coupled with the fluorescence detector method. In summary, this work offers a novel screening strategy with high sensitivity and robustness for the quantitative detection of mycotoxins or other pollutants for food safety and clinical diagnosis.
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Affiliation(s)
- Ying Xiong
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, P. R. China.
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32
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Liu R, Wang C, Hu J, Su Y, Lv Y. DNA-templated copper nanoparticles: Versatile platform for label-free bioassays. Trends Analyt Chem 2018. [DOI: 10.1016/j.trac.2018.06.003] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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33
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Wang HB, Li Y, Bai HY, Liu YM. Fluorescent Determination of Dopamine Using Polythymine-Templated Copper Nanoclusters. ANAL LETT 2018. [DOI: 10.1080/00032719.2018.1454457] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Hai-Bo Wang
- College of Chemistry and Chemical Engineering, Henan Province Key Laboratory of Utilization of Non-metallic Mineral in the Sourth of Henan, Institute for Conservation and Utilization of Agro-bioresources in Dabie Mountains, Xinyang Normal University, Xinyang, China
- State Key Laboratory of Chemo/biosensing and Chemometrics, Hunan University, Changsha, China
| | - Yang Li
- College of Chemistry and Chemical Engineering, Henan Province Key Laboratory of Utilization of Non-metallic Mineral in the Sourth of Henan, Institute for Conservation and Utilization of Agro-bioresources in Dabie Mountains, Xinyang Normal University, Xinyang, China
| | - Hong-Yu Bai
- College of Chemistry and Chemical Engineering, Henan Province Key Laboratory of Utilization of Non-metallic Mineral in the Sourth of Henan, Institute for Conservation and Utilization of Agro-bioresources in Dabie Mountains, Xinyang Normal University, Xinyang, China
| | - Yan-Ming Liu
- College of Chemistry and Chemical Engineering, Henan Province Key Laboratory of Utilization of Non-metallic Mineral in the Sourth of Henan, Institute for Conservation and Utilization of Agro-bioresources in Dabie Mountains, Xinyang Normal University, Xinyang, China
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