101
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Nanozymes for medical biotechnology and its potential applications in biosensing and nanotherapeutics. Biotechnol Lett 2020; 42:357-373. [PMID: 31950406 DOI: 10.1007/s10529-020-02795-3] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2019] [Accepted: 01/09/2020] [Indexed: 02/08/2023]
Abstract
Recent past years have witnessed the development of several artificial enzymes, using different materials to mimic natural enzymes with respect to their structure and functions. The nanozymes are nanomaterials possessing similar characteristics to the natural enzymes and have emerged recently as an innovative class of artificial enzymes. The nanozymes have got remarkable attention from the researchers and notable developments have been achieved owing to their unique properties compared with natural enzymes and classic artificial enzymes. In this regard, several nanomaterials have been scrutinized so far to mimic different natural enzymes for wider applications ranging from imaging, sensing, water treatment, pollutant removal, and therapeutics. The applications of nanozymes in biomedicine research are fast-growing and various nanozymes have been implicated in diagnostic medicine, targeted cancer therapy. Such abilities make them an appropriate alternative for the development of affordable, sustainable and safe diagnostic as well as therapeutic agents.
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102
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Liu R, McConnell EM, Li J, Li Y. Advances in functional nucleic acid based paper sensors. J Mater Chem B 2020; 8:3213-3230. [DOI: 10.1039/c9tb02584g] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
This article provides an extensive review of paper-based sensors that utilize functional nucleic acids, particularly DNA aptamers and DNAzymes, as recognition elements.
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Affiliation(s)
- Rudi Liu
- Department of Biochemistry and Biomedical Sciences
- McMaster University
- Hamilton
- Canada
| | - Erin M. McConnell
- Department of Biochemistry and Biomedical Sciences
- McMaster University
- Hamilton
- Canada
| | - Jiuxing Li
- Department of Biochemistry and Biomedical Sciences
- McMaster University
- Hamilton
- Canada
| | - Yingfu Li
- Department of Biochemistry and Biomedical Sciences
- McMaster University
- Hamilton
- Canada
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103
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Ren W, Huang PJJ, He M, Lyu M, Wang C, Wang S, Liu J. Sensitivity of a classic DNAzyme for Pb2+ modulated by cations, anions and buffers. Analyst 2020; 145:1384-1388. [DOI: 10.1039/c9an02612f] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Both cations and anions in salt strongly affect the activity of a classic Pb2+ specific DNAzyme, which in turn can affect the sensitivity of related biosensors.
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Affiliation(s)
- Wei Ren
- Jiangsu Provincial Key Laboratory of Marine Biology
- College of Resources and Environmental Sciences
- Nanjing Agricultural University
- Nanjing
- China
| | | | - Meilin He
- Jiangsu Provincial Key Laboratory of Marine Biology
- College of Resources and Environmental Sciences
- Nanjing Agricultural University
- Nanjing
- China
| | - Mingsheng Lyu
- Jiangsu Key Laboratory of Marine Bioresources and Environment/Jiangsu Key Laboratory of Marine Biotechnology
- Ocean University of Jiangsu
- Lianyungang
- China
- Co-Innovation Center of Jiangsu Marine Bio-industry Technology
| | - Changhai Wang
- Jiangsu Provincial Key Laboratory of Marine Biology
- College of Resources and Environmental Sciences
- Nanjing Agricultural University
- Nanjing
- China
| | - Shujun Wang
- Jiangsu Key Laboratory of Marine Bioresources and Environment/Jiangsu Key Laboratory of Marine Biotechnology
- Ocean University of Jiangsu
- Lianyungang
- China
- Co-Innovation Center of Jiangsu Marine Bio-industry Technology
| | - Juewen Liu
- Department of Chemistry
- University of Waterloo
- Waterloo
- Canada
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104
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Hu L, Fu X, Kong G, Yin Y, Meng HM, Ke G, Zhang XB. DNAzyme–gold nanoparticle-based probes for biosensing and bioimaging. J Mater Chem B 2020; 8:9449-9465. [DOI: 10.1039/d0tb01750g] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
The design and applications of DNAzyme–gold nanoparticle-based probes in biosensing and bioimaging are summarized here.
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Affiliation(s)
- Ling Hu
- Molecular Sciences and Biomedicine Laboratory
- State Key Laboratory for Chemo/Biosensing and Chemometrics
- College of Chemistry and Chemical Engineering
- Hunan University
- Changsha
| | - Xiaoyi Fu
- Molecular Sciences and Biomedicine Laboratory
- State Key Laboratory for Chemo/Biosensing and Chemometrics
- College of Chemistry and Chemical Engineering
- Hunan University
- Changsha
| | - Gezhi Kong
- Molecular Sciences and Biomedicine Laboratory
- State Key Laboratory for Chemo/Biosensing and Chemometrics
- College of Chemistry and Chemical Engineering
- Hunan University
- Changsha
| | - Yao Yin
- Molecular Sciences and Biomedicine Laboratory
- State Key Laboratory for Chemo/Biosensing and Chemometrics
- College of Chemistry and Chemical Engineering
- Hunan University
- Changsha
| | - Hong-Min Meng
- College of Chemistry
- Zhengzhou University
- Zhengzhou 450001
- P. R. China
| | - Guoliang Ke
- Molecular Sciences and Biomedicine Laboratory
- State Key Laboratory for Chemo/Biosensing and Chemometrics
- College of Chemistry and Chemical Engineering
- Hunan University
- Changsha
| | - Xiao-Bing Zhang
- Molecular Sciences and Biomedicine Laboratory
- State Key Laboratory for Chemo/Biosensing and Chemometrics
- College of Chemistry and Chemical Engineering
- Hunan University
- Changsha
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105
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Weng Y, Huang Q, Li C, Yang Y, Wang X, Yu J, Huang Y, Liang XJ. Improved Nucleic Acid Therapy with Advanced Nanoscale Biotechnology. MOLECULAR THERAPY. NUCLEIC ACIDS 2019; 19:581-601. [PMID: 31927331 PMCID: PMC6957827 DOI: 10.1016/j.omtn.2019.12.004] [Citation(s) in RCA: 63] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/08/2019] [Revised: 11/23/2019] [Accepted: 12/02/2019] [Indexed: 12/11/2022]
Abstract
Due to a series of systemic and intracellular obstacles in nucleic acid (NA) therapy, including fast degradation in blood, renal clearance, poor cellular uptake, and inefficient endosomal escape, NAs may need delivery methods to transport to the cell nucleus or cytosol to be effective. Advanced nanoscale biotechnology-associated strategies, such as controlling the particle size, charge, drug loading, response to environmental signals, or other physical/chemical properties of delivery carriers, have provided great help for the in vivo and in vitro delivery of NA therapeutics. In this review, we introduce the characteristics of different NA modalities and illustrate how advanced nanoscale biotechnology assists NA therapy. The specific features and challenges of various nanocarriers in clinical and preclinical studies are summarized and discussed. With the help of advanced nanoscale biotechnology, some of the major barriers to the development of NA therapy will eventually be overcome in the near future.
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Affiliation(s)
- Yuhua Weng
- Advanced Research Institute of Multidisciplinary Science, School of Life Science, Institute of Engineering Medicine, Key Laboratory of Molecular Medicine and Biotherapy, Beijing Institute of Technology, Beijing 100081, P.R. China
| | - Qianqian Huang
- Chinese Academy of Sciences (CAS) Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology of China, Beijing 100190, P.R. China; University of Chinese Academy of Sciences, Beijing 100049, P.R. China
| | - Chunhui Li
- Advanced Research Institute of Multidisciplinary Science, School of Life Science, Institute of Engineering Medicine, Key Laboratory of Molecular Medicine and Biotherapy, Beijing Institute of Technology, Beijing 100081, P.R. China
| | - Yongfeng Yang
- Department of Interventional Ultrasound, Chinese PLA General Hospital, Beijing 100853, P.R. China
| | - Xiaoxia Wang
- Institute of Molecular Medicine, Peking University, Beijing 100871, P.R. China
| | - Jie Yu
- Department of Interventional Ultrasound, Chinese PLA General Hospital, Beijing 100853, P.R. China
| | - Yuanyu Huang
- Advanced Research Institute of Multidisciplinary Science, School of Life Science, Institute of Engineering Medicine, Key Laboratory of Molecular Medicine and Biotherapy, Beijing Institute of Technology, Beijing 100081, P.R. China.
| | - Xing-Jie Liang
- Chinese Academy of Sciences (CAS) Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology of China, Beijing 100190, P.R. China.
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106
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Kumari S, Mandal S, Das P. Carbon dot mediated G quadruplex nano-network formation for enhanced DNAzyme activity and easy catalyst reclamation. RSC Adv 2019; 9:41502-41510. [PMID: 35541604 PMCID: PMC9076458 DOI: 10.1039/c9ra08290e] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2019] [Accepted: 12/01/2019] [Indexed: 02/01/2023] Open
Abstract
The significant application potential of the DNAzyme activity of G-quadruplex (G4)–hemin complexes has prompted considerable research efforts to amplify their peroxidase mimicking activity to match that of their enzymatic counterparts. However, concurrent improvements in the catalytic cycle and catalyst recovery remain elusive. Herein, we report the creation of a network array of G-quadruplex (G4)–hemin complexes crosslinked by carbon quantum dots (CDs) that not only significantly improves the G-quadruplex–hemin DNAzyme activity, stability, and catalytic cycle, but also points towards easy catalyst regeneration via a semi-heterogeneous catalysis approach. 5′-phosphate terminated G-rich single-stranded DNA molecules proficient in generating intermolecular and intramolecular G-quadruplexes were covalently conjugated to anthrarufin derived CDs through phosphoramidite chemistry. The network array was achieved through K+ mediated intermolecular G-quadruplex formation that readily complexes with hemin to give the catalytic core. The presence of CDs in close vicinity ensures a favorable microenvironment that helps in amplifying the DNAzyme activity in both the intermolecular CD–G-quadruplex network assembly and the intramolecular CD–G quadruplex conjugate, while the former is necessary for easy catalyst regeneration. The CD photophysics enable the monitoring of the DNAzyme recovery and reaction progress. Enhanced DNAzyme activity of G-quadruplex–hemin complex in carbon dot crosslinked nanonetwork with access to easy catalyst regeneration.![]()
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Affiliation(s)
- Sonam Kumari
- Department of Chemistry, Indian Institute of Technology Patna Bihta Patna 801103 Bihar India
| | - Saptarshi Mandal
- Department of Chemistry, Indian Institute of Technology Patna Bihta Patna 801103 Bihar India
| | - Prolay Das
- Department of Chemistry, Indian Institute of Technology Patna Bihta Patna 801103 Bihar India
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107
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Ren W, Huang PJJ, He M, Lyu M, Wang S, Wang C, Liu J. The Two Classic Pb 2+ -Selective DNAzymes Are Related: Rational Evolution for Understanding Metal Selectivity. Chembiochem 2019; 21:1293-1297. [PMID: 31755629 DOI: 10.1002/cbic.201900664] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2019] [Indexed: 01/09/2023]
Abstract
In 1994, the first DNAzyme named GR5 was reported, which specifically requires Pb2+ for its RNA cleavage activity. Three years later, the 8-17 DNAzyme was isolated. The 8-17 DNAzyme and the related 17E DNAzyme are also most active with Pb2+ , although other divalent metals can work as well. GR5 and 17E have the same substrate sequence, and their catalytic loops in the enzyme strands also have a few similar and conserved nucleotides. Considering these, we hypothesized that 17E might be a special form of GR5. To test this hypothesis, we performed systematic rational evolution experiments to gradually mutate GR5 toward 17E. By using the activity ratio in the presence of Pb2+ and Mg2+ for defining these two DNAzymes, the critical nucleotide was identified to be T12 in 17E for metal specificity. In addition, G9 in GR5 is a position not found in most 17E or 8-17 DNAzymes, and G9 needs to be added to rescue GR5 activity if T12 becomes a cytosine. This study highlights the links between these two classic and widely used DNAzymes, and offers new insight into the sequence-activity relationship related to metal selectivity.
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Affiliation(s)
- Wei Ren
- Jiangsu Provincial Key Laboratory of Marine Biology, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing, Jiangsu, 210095, P. R. China.,Jiangsu Key Laboratory of Marine Bioresources and Environment, Jiangsu Ocean University, Lianyungang, Jiangsu, 222005, P. R. China.,Department of Chemistry, Waterloo Institute for Nanotechnology, University of Waterloo, Waterloo, ON, N2L 3G1, Canada
| | - Po-Jung Jimmy Huang
- Department of Chemistry, Waterloo Institute for Nanotechnology, University of Waterloo, Waterloo, ON, N2L 3G1, Canada
| | - Meilin He
- Jiangsu Provincial Key Laboratory of Marine Biology, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing, Jiangsu, 210095, P. R. China
| | - Mingsheng Lyu
- Jiangsu Key Laboratory of Marine Bioresources and Environment, Jiangsu Ocean University, Lianyungang, Jiangsu, 222005, P. R. China.,Co-Innovation Center of Jiangsu Marine Bio-industry Technology, Jiangsu Ocean University, Lianyungang, Jiangsu, 222005, P. R. China
| | - Shujun Wang
- Jiangsu Key Laboratory of Marine Bioresources and Environment, Jiangsu Ocean University, Lianyungang, Jiangsu, 222005, P. R. China.,Co-Innovation Center of Jiangsu Marine Bio-industry Technology, Jiangsu Ocean University, Lianyungang, Jiangsu, 222005, P. R. China
| | - Changhai Wang
- Jiangsu Provincial Key Laboratory of Marine Biology, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing, Jiangsu, 210095, P. R. China
| | - Juewen Liu
- Department of Chemistry, Waterloo Institute for Nanotechnology, University of Waterloo, Waterloo, ON, N2L 3G1, Canada
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108
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Lu M, Wang C, Ding Y, Peng M, Zhang W, Li K, Wei W, Lin Y. Fe-N/C single-atom catalysts exhibiting multienzyme activity and ROS scavenging ability in cells. Chem Commun (Camb) 2019; 55:14534-14537. [PMID: 31740902 DOI: 10.1039/c9cc07408b] [Citation(s) in RCA: 44] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Fe-N/C single atom catalysts (SACs) exhibit peroxidase-like, oxidase-like, catalase-like, and glutathione peroxidase-like activity. Fe-N/C SACs are successfully applied to control the intracellular H2O2 level. This study not only explores the types of SACs mimicking enzymes but also provides opportunities for SACs in biomedical and other bioengineering applications.
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Affiliation(s)
- Mingju Lu
- Department of Chemistry, Capital Normal University, Beijing, 100048, China.
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109
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Virgilio A, Esposito V, Lejault P, Monchaud D, Galeone A. Improved performances of catalytic G-quadruplexes (G4-DNAzymes) via the chemical modifications of the DNA backbone to provide G-quadruplexes with double 3'-external G-quartets. Int J Biol Macromol 2019; 151:976-983. [PMID: 31747569 DOI: 10.1016/j.ijbiomac.2019.10.181] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2019] [Revised: 10/18/2019] [Accepted: 10/22/2019] [Indexed: 12/17/2022]
Abstract
Here we report on the design of a new catalytic G-quadruplex-DNA system (G4-DNAzyme) based on the modification of the DNA scaffold to provide the DNA pre-catalyst with two identical 3'-ends, known to be more catalytically proficient than the 5'-ends. To this end, we introduced a 5'-5' inversion of polarity site in the middle of the G4-forming sequences AG4A and AG6A to obtain d(3'AGG5'-5'GGA3') (or AG2-G2A) and d(3'AGGG5'-5'GGGA3') (or AG3-G3A) that fold into stable G4 whose tetramolecular nature was confirmed via nuclear magnetic resonance (NMR) and circular dichroism (CD) investigations. Both AG2-G2A and AG3-G3A display two identical external G-quartets (3'-ends) known to interact with the cofactor hemin with a high efficiency, making the resulting complex competent to perform hemoprotein-like catalysis (G4-DNAzyme). A systematic comparison of the performances of modified and unmodified G4s lends credence to the relevance of the modification exploited here (5'-5' inversion of polarity site), which represents a new chemical opportunity to improve the overall activity of catalytic G4s.
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Affiliation(s)
| | - Veronica Esposito
- Department of Pharmacy, University of Naples Federico II, Napoli, Italy
| | - Pauline Lejault
- ICMUB CNRS UMR6302, UBFC Dijon, 9, Avenue Alain Savary, Dijon 21078, France
| | - David Monchaud
- ICMUB CNRS UMR6302, UBFC Dijon, 9, Avenue Alain Savary, Dijon 21078, France.
| | - Aldo Galeone
- Department of Pharmacy, University of Naples Federico II, Napoli, Italy.
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110
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Moon WJ, Liu J. Replacing Mg2+by Fe2+for RNA‐Cleaving DNAzymes. Chembiochem 2019; 21:401-407. [DOI: 10.1002/cbic.201900344] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2019] [Indexed: 12/14/2022]
Affiliation(s)
- Woohyun J. Moon
- Department of ChemistryWaterloo Institute for NanotechnologyUniversity of Waterloo Waterloo Ontario N2L 3G1 Canada
| | - Juewen Liu
- Department of ChemistryWaterloo Institute for NanotechnologyUniversity of Waterloo Waterloo Ontario N2L 3G1 Canada
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111
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Wu R, Jiang LP, Zhu JJ, Liu J. Effects of Small Molecules on DNA Adsorption by Gold Nanoparticles and a Case Study of Tris(2-carboxyethyl)phosphine (TCEP). LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:13461-13468. [PMID: 31536371 DOI: 10.1021/acs.langmuir.9b02652] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
DNA-functionalized gold nanoparticles (AuNPs) often encounter various small molecules and ions such as backfilling agents, bifunctional cross-linkers, stabilizers, and molecules from biological fluids both during and after the DNA conjugation process. Small molecules and ions can influence the stability and property of the conjugate, but such interactions are yet to be fully explored. In this work, eight important molecules were studied and compared, including tris(2-carboxyethyl)phosphine hydrochloride (TCEP), 3-(2-pyridyldithio)propionic acid N-hydroxysuccinimide ester (SPDP), 4-maleimidobutyric acid N-hydroxysuccinimide ester (GMBS), 6-hydroxy-1-hexanethiol (MCH), l-glutathione (GSH), bromide (Br-), bis(p-sulfonatophenyl)phenylphosphine (BSPP), and thiocyanate (SCN-). Depending on the size, charge, and adsorption affinity on the AuNPs, they can either stabilize or destabilize the AuNPs. Their ability to displace thiolated DNA from AuNPs follows the order of MCH > SPDP > GSH > SCN- > TCEP > Br- > BSPP > GMBS. BSPP has the best stabilization effect for the colloidal stability of AuNPs, while it does not displace the adsorbed DNA. TCEP can be adsorbed on AuNPs and enhance the adsorption of A/C rich DNA in low-salt conditions. This work indicates that the effects of small molecules and ions cannot be ignored when studying the DNA-functionalized AuNPs, which ensures optimal applications and correct interpretation of the data.
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Affiliation(s)
- Rong Wu
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering , Nanjing University , Nanjing 210023 , China
- Department of Chemistry, Waterloo Institute for Nanotechnology , University of Waterloo , Waterloo , Ontario N2L 3G1 , Canada
| | - Li-Ping Jiang
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering , Nanjing University , Nanjing 210023 , China
| | - Jun-Jie Zhu
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering , Nanjing University , Nanjing 210023 , China
| | - Juewen Liu
- Department of Chemistry, Waterloo Institute for Nanotechnology , University of Waterloo , Waterloo , Ontario N2L 3G1 , Canada
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112
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Gao L, Tong X, Ye T, Gao H, Zhang Q, Yan C, Yu Y, Fei Y, Zhou X, Shao Y. G‐Quadruplex‐Based Photooxidase Driven by Visible Light. ChemCatChem 2019. [DOI: 10.1002/cctc.201901481] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Longlong Gao
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials Institute of Physical Chemistry College of Chemistry and Life SciencesZhejiang Normal University Jinhua 321004 P.R. China
| | - Xingyu Tong
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials Institute of Physical Chemistry College of Chemistry and Life SciencesZhejiang Normal University Jinhua 321004 P.R. China
| | - Ting Ye
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials Institute of Physical Chemistry College of Chemistry and Life SciencesZhejiang Normal University Jinhua 321004 P.R. China
| | - Heng Gao
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials Institute of Physical Chemistry College of Chemistry and Life SciencesZhejiang Normal University Jinhua 321004 P.R. China
| | - Qingqing Zhang
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials Institute of Physical Chemistry College of Chemistry and Life SciencesZhejiang Normal University Jinhua 321004 P.R. China
| | - Chenxiao Yan
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials Institute of Physical Chemistry College of Chemistry and Life SciencesZhejiang Normal University Jinhua 321004 P.R. China
| | - Yali Yu
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials Institute of Physical Chemistry College of Chemistry and Life SciencesZhejiang Normal University Jinhua 321004 P.R. China
| | - Yifan Fei
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials Institute of Physical Chemistry College of Chemistry and Life SciencesZhejiang Normal University Jinhua 321004 P.R. China
| | - Xiaoshun Zhou
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials Institute of Physical Chemistry College of Chemistry and Life SciencesZhejiang Normal University Jinhua 321004 P.R. China
| | - Yong Shao
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials Institute of Physical Chemistry College of Chemistry and Life SciencesZhejiang Normal University Jinhua 321004 P.R. China
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113
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Xiao M, Lai W, Man T, Chang B, Li L, Chandrasekaran AR, Pei H. Rationally Engineered Nucleic Acid Architectures for Biosensing Applications. Chem Rev 2019; 119:11631-11717. [DOI: 10.1021/acs.chemrev.9b00121] [Citation(s) in RCA: 147] [Impact Index Per Article: 29.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Mingshu Xiao
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, 500 Dongchuan Road, Shanghai 200241, P. R. China
| | - Wei Lai
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, 500 Dongchuan Road, Shanghai 200241, P. R. China
| | - Tiantian Man
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, 500 Dongchuan Road, Shanghai 200241, P. R. China
| | - Binbin Chang
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, 500 Dongchuan Road, Shanghai 200241, P. R. China
| | - Li Li
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, 500 Dongchuan Road, Shanghai 200241, P. R. China
| | - Arun Richard Chandrasekaran
- The RNA Institute, University at Albany, State University of New York, Albany, New York 12222, United States
| | - Hao Pei
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, 500 Dongchuan Road, Shanghai 200241, P. R. China
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114
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Victorious A, Saha S, Pandey R, Didar TF, Soleymani L. Affinity-Based Detection of Biomolecules Using Photo-Electrochemical Readout. Front Chem 2019; 7:617. [PMID: 31572709 PMCID: PMC6749010 DOI: 10.3389/fchem.2019.00617] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2019] [Accepted: 08/26/2019] [Indexed: 11/22/2022] Open
Abstract
Detection and quantification of biologically-relevant analytes using handheld platforms are important for point-of-care diagnostics, real-time health monitoring, and treatment monitoring. Among the various signal transduction methods used in portable biosensors, photoelectrochemcial (PEC) readout has emerged as a promising approach due to its low limit-of-detection and high sensitivity. For this readout method to be applicable to analyzing native samples, performance requirements beyond sensitivity such as specificity, stability, and ease of operation are critical. These performance requirements are governed by the properties of the photoactive materials and signal transduction mechanisms that are used in PEC biosensing. In this review, we categorize PEC biosensors into five areas based on their signal transduction strategy: (a) introduction of photoactive species, (b) generation of electron/hole donors, (c) use of steric hinderance, (d) in situ induction of light, and (e) resonance energy transfer. We discuss the combination of strengths and weaknesses that these signal transduction systems and their material building blocks offer by reviewing the recent progress in this area. Developing the appropriate PEC biosensor starts with defining the application case followed by choosing the materials and signal transduction strategies that meet the application-based specifications.
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Affiliation(s)
- Amanda Victorious
- School of Biomedical Engineering, McMaster University, Hamilton, ON, Canada
| | - Sudip Saha
- School of Biomedical Engineering, McMaster University, Hamilton, ON, Canada
| | - Richa Pandey
- Department of Engineering Physics, McMaster University, Hamilton, ON, Canada
| | - Tohid F. Didar
- School of Biomedical Engineering, McMaster University, Hamilton, ON, Canada
- Department of Mechanical Engineering, McMaster University, Hamilton, ON, Canada
| | - Leyla Soleymani
- School of Biomedical Engineering, McMaster University, Hamilton, ON, Canada
- Department of Engineering Physics, McMaster University, Hamilton, ON, Canada
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115
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Chen YH, Chien WC, Lee DC, Tan KT. Signal Amplification and Detection of Small Molecules via the Activation of Streptavidin and Biotin Recognition. Anal Chem 2019; 91:12461-12467. [DOI: 10.1021/acs.analchem.9b03144] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
| | | | | | - Kui-Thong Tan
- Department of Medicinal and Applied Chemistry, Kaohsiung Medical University, Kaohsiung 807, Taiwan (ROC)
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116
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Peng D, Li Y, Huang Z, Liang RP, Qiu JD, Liu J. Efficient DNA-Catalyzed Porphyrin Metalation for Fluorescent Ratiometric Pb 2+ Detection. Anal Chem 2019; 91:11403-11408. [PMID: 31414597 DOI: 10.1021/acs.analchem.9b02759] [Citation(s) in RCA: 55] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Developing biosensors for Pb2+ is an important analytical topic. DNA-based Pb2+ sensors have been designed mainly based on RNA-cleaving DNAzymes and Pb2+-induced folding of G-quadruplex (G4) DNA. Porphyrin metalation is a key reaction in biology and catalysis. Many enzyme mimics have been developed to catalyze this reaction, and some metalation DNAzymes were reported with a G4 structure. Inspired by the excellent G4 binding properties of certain divalent metal ions, we herein screened a few metals and G-rich DNA sequences. The metalation activity of a DNA named T30695 (sequence: (G3T)4) was significantly accelerated by Pb2+. The reaction of Cu2+ insertion into the mesoporphyrin IX had a kcat of 0.89 min-1 and a Km of 9.8 μM, representing a catalytic efficiency similar to that of human ferrochelatase. The reason for the acceleration was attributed to Pb2+ binding of the G4 DNA and the catalytic activity of the large Pb2+ ion for this reaction. A ratiometric sensor for Pb2+ was developed by inserting Zn2+ with a detection limit of 23.5 nM Pb2+. This work has established a new DNA-based reaction that can be used for Pb2+ detection, and it also provides a highly efficient new DNAzyme for porphyrin metalation, which might be used for signal production for other biosensors.
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Affiliation(s)
- Dong Peng
- College of Chemistry , Nanchang University , 999 Xuefu Avenue , Nanchang , 330031 Jiangxi , China.,Department of Chemistry, Waterloo Institute for Nanotechnology , University of Waterloo , Waterloo , Ontario N2L 3G1 , Canada
| | - Yuqing Li
- Department of Chemistry, Waterloo Institute for Nanotechnology , University of Waterloo , Waterloo , Ontario N2L 3G1 , Canada
| | - Zhicheng Huang
- Department of Chemistry, Waterloo Institute for Nanotechnology , University of Waterloo , Waterloo , Ontario N2L 3G1 , Canada
| | - Ru-Ping Liang
- College of Chemistry , Nanchang University , 999 Xuefu Avenue , Nanchang , 330031 Jiangxi , China
| | - Jian-Ding Qiu
- College of Chemistry , Nanchang University , 999 Xuefu Avenue , Nanchang , 330031 Jiangxi , China.,Environmental Protection Materials and Equipment Engineering Technology Center of Jiangxi, Department of Materials and Chemical Engineering , Pingxiang University , 211 Pingan North Road , Pingxiang , 337055 Jiangxi , China
| | - Juewen Liu
- Department of Chemistry, Waterloo Institute for Nanotechnology , University of Waterloo , Waterloo , Ontario N2L 3G1 , Canada
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117
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Xu J, Lee ES, Gye MC, Kim YP. Rapid and sensitive determination of bisphenol A using aptamer and split DNAzyme. CHEMOSPHERE 2019; 228:110-116. [PMID: 31026631 DOI: 10.1016/j.chemosphere.2019.04.110] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/18/2019] [Revised: 04/12/2019] [Accepted: 04/14/2019] [Indexed: 06/09/2023]
Abstract
Despite the increasing concern regarding bisphenol A (BPA) as an endocrine disrupting chemical (EDC) upon environmental or human exposure, development of simple method for BPA detection has been hampered, due to the lack of a stable bioreceptor and signal generator. Here, we report a nucleic acid-based rapid and sensitive method for BPA detection, which constitutes a ssDNA aptamer and ssDNAzyme. When the peroxidase-like DNAzyme sequence was split into two parts (one incorporated into the anti-BPA aptamer as a target recognition element and the other into the complementary sequence as a bait), the presence of BPA hindered the association of the split DNA sequence, leading to a reduced signal in the DNAzyme-triggered chemiluminescence (CL). Thus, this NA-based CL measurement permitted the detection of BPA at as low as 5 nM with a broad dynamic range of five orders and with high selectivity towards BPA over other EDCs with structural similarity. With the development of aptamers, our detection method is expected to facilitate studies to monitor EDCs with high simplicity and sensitivity in the field of environmental science.
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Affiliation(s)
- Jing Xu
- Department of Environmental Sciences, Hanyang University, Seoul, 04763, Republic of Korea
| | - Eun-Song Lee
- Department of Life Science, Hanyang University, Seoul, 04763, Republic of Korea
| | - Myung Chan Gye
- Department of Life Science, Hanyang University, Seoul, 04763, Republic of Korea; Research Institute for Natural Sciences, Hanyang University, Seoul, 04763, Republic of Korea.
| | - Young-Pil Kim
- Department of Environmental Sciences, Hanyang University, Seoul, 04763, Republic of Korea; Department of Life Science, Hanyang University, Seoul, 04763, Republic of Korea; Research Institute for Natural Sciences, Hanyang University, Seoul, 04763, Republic of Korea; Institute of Nano Science and Technology, Hanyang University, Seoul, 04763, Republic of Korea; Research Institute for Convergence of Basic Sciences, Hanyang University, Seoul, 04763, Republic of Korea.
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118
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Targeting a viral DNA sequence with a deoxyribozyme in a preparative scale. Biochimie 2019; 165:161-169. [PMID: 31377192 DOI: 10.1016/j.biochi.2019.07.022] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2019] [Accepted: 07/28/2019] [Indexed: 01/13/2023]
Abstract
Deoxyribozymes are synthetic and single stranded DNAs that are capable of catalysis of a variety of reactions, including cleavage of DNA substrates. Deoxyribozymes are usually characterized by analytical single-turnover kinetic assays, however, for many applications e.g. characterization of the reaction products, semi-preparative and preparative reactions are required. At such scales, there is a lack of comprehensive analysis and conditions that supports high amount of products in an appropriate time-scale are vaguely guessed by researchers. In this report, catalytic activity of an oxidizing DNA-cleaving deoxyribozyme, F-8(X), was comprehensively inspected in semi-preparative (10 μM substrate) scale. A 60 nucleotides long synthetic DNA sequence was selected as the target DNA for this study. The DNA sequence was originated from a single stranded DNA virus. Investigations revealed high yield in the presence of optimal concentration of oxidizing agents. The optimal conditions have been applied for scale-up of the reaction to preparative (40 μM substrate) and multi-turnover reactions to achieve highest amount of product in a cost-, time- and labor-effective manner. Such a comprehensive analysis of a deoxyribozyme's activity in semi-preparative scale provides a platform for expanded applications of DNA catalysts as a tool in chemical biology.
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119
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He Y, Chang Y, Chen D, Liu J. Probing Local Folding Allows Robust Metal Sensing Based on a Na + -Specific DNAzyme. Chembiochem 2019; 20:2241-2247. [PMID: 30989776 DOI: 10.1002/cbic.201900143] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2019] [Indexed: 12/26/2022]
Abstract
Fluorescent metal sensors based on DNA often rely on changes in end-to-end distance or local environmental near fluorophore labels. Because metal ions can also nonspecifically interact with DNA through various mechanisms, such as charge screening, base binding, and increase or decrease in duplex stability, robust and specific sensing of metal ions has been quite challenging. In this work, a side-by-side comparison of two signaling strategies on a Na+ -specific DNAzyme that contained a Na+ -binding aptamer was performed. The duplex regions of the DNAzyme was systematically shortened and its effect was studied by using a 2-aminopurine (2AP)-labeled substrate strand. Na+ binding affected the local environmental of the 2AP label and increased its fluorescence. A synergistic process of Na+ binding and forming the duplex on the 5'-end of the enzyme strand was observed, and this end was close to the aptamer loop. Effective Na+ binding was achieved with a five base-pair stem. The effect on the 3'-end is more continuous, and the stem needs to form first before Na+ can bind. With an optimized substrate binding arm, a FRET-based sensor has been designed by labeling the two ends of a cis form of the DNAzyme with two fluorophores. In this case, Na+ failed to show a distinct difference from that of Li+ or K+ ; thus indicating that probing changes to the local environment allows more robust sensing of metal ions.
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Affiliation(s)
- Yanping He
- State Key Laboratory of Precision Measurement Technology and, Instruments, Tianjin University, Tianjin, 300072, P.R. China.,Department of Chemistry, Waterloo Institute for Nanotechnology, University of Waterloo, Waterloo, Ontario, N2L 3G1, Canada
| | - Yangyang Chang
- Department of Chemistry, Waterloo Institute for Nanotechnology, University of Waterloo, Waterloo, Ontario, N2L 3G1, Canada.,School of Environmental Science and Technology, Key Laboratory of Industrial Ecology and Environmental Engineering, (Ministry of Education), Dalian University of Technology, Dalian, 116024, P.R. China
| | - Da Chen
- State Key Laboratory of Precision Measurement Technology and, Instruments, Tianjin University, Tianjin, 300072, P.R. China
| | - Juewen Liu
- Department of Chemistry, Waterloo Institute for Nanotechnology, University of Waterloo, Waterloo, Ontario, N2L 3G1, Canada
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120
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He Y, Chen D, Huang PJJ, Zhou Y, Ma L, Xu K, Yang R, Liu J. Misfolding of a DNAzyme for ultrahigh sodium selectivity over potassium. Nucleic Acids Res 2019; 46:10262-10271. [PMID: 30215808 PMCID: PMC6212836 DOI: 10.1093/nar/gky807] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2018] [Accepted: 09/08/2018] [Indexed: 02/07/2023] Open
Abstract
Herein, the excellent Na+ selectivity of a few RNA-cleaving DNAzymes was exploited, where Na+ can be around 3000-fold more effective than K+ for promoting catalysis. By using a double mutant based on the Ce13d DNAzyme, and by lowering the temperature, increased 2-aminopurine (2AP) fluorescence was observed with addition of both Na+ and K+. The fluorescence increase was similar for these two metals at below 10 mM, after which K+ took a different pathway. Since 2AP probes its local base stacking environment, K+ can be considered to induce misfolding. Binding of both Na+ and K+ was specific, since single base mutations could fully inhibit 2AP fluorescence for both metals. The binding thermodynamics was measured by temperature-dependent experiments revealing enthalpy-driven binding for both metals and less coordination sites compared to G-quadruplex DNA. Cleavage activity assays indicated a moderate cleavage activity with 10 mM K+, while further increase of K+ inhibited the activity, also supporting its misfolding of the DNAzyme. For comparison, a G-quadruplex DNA was also studied using the same system, where Na+ and K+ led to the same final state with only around 8-fold difference in Kd. This study provides interesting insights into strategies for discriminating Na+ and K+.
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Affiliation(s)
- Yanping He
- State Key Laboratory of Precision Measurement Technology and Instruments, University of Tianjin, Tianjin 300072, China.,Department of Chemistry, Waterloo Institute for Nanotechnology, University of Waterloo, Waterloo, ON N2L 3G1, Canada
| | - Da Chen
- State Key Laboratory of Precision Measurement Technology and Instruments, University of Tianjin, Tianjin 300072, China
| | - Po-Jung Jimmy Huang
- Department of Chemistry, Waterloo Institute for Nanotechnology, University of Waterloo, Waterloo, ON N2L 3G1, Canada
| | - Yibo Zhou
- School of Chemistry and Biological Engineering, Changsha University of Science and Technology, Changsha 410114, P. R. China
| | - Lingzi Ma
- Department of Chemistry, Waterloo Institute for Nanotechnology, University of Waterloo, Waterloo, ON N2L 3G1, Canada
| | - Kexin Xu
- State Key Laboratory of Precision Measurement Technology and Instruments, University of Tianjin, Tianjin 300072, China
| | - Ronghua Yang
- School of Chemistry and Biological Engineering, Changsha University of Science and Technology, Changsha 410114, P. R. China
| | - Juewen Liu
- Department of Chemistry, Waterloo Institute for Nanotechnology, University of Waterloo, Waterloo, ON N2L 3G1, Canada
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121
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Sun C, Ou X, Cheng Y, Zhai T, Liu B, Lou X, Xia F. Coordination-induced structural changes of DNA-based optical and electrochemical sensors for metal ions detection. Dalton Trans 2019; 48:5879-5891. [PMID: 30681098 DOI: 10.1039/c8dt04733b] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Metal ions play a critical role in human health and abnormal levels are closely related to various diseases. Therefore, the detection of metal ions with high selectivity, sensitivity and accuracy is particularly important. This article highlights and comments on the coordination-induced structural changes of DNA-based optical, electrochemical and optical-electrochemical-combined sensors for metal ions detection. Challenges and potential solutions of DNA-based sensors for the simultaneous detection of multiple metal ions are also discussed for further development and exploitation.
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Affiliation(s)
- Chunli Sun
- State Key Laboratory of Material Processing and Die & Mould Technology, School of Materials Science and Engineering; Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica, School of Chemistry and Chemical Engineering; National Engineering Research Center for Nanomedicine, Department of Biomedical Engineering, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, China.
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122
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Ultra-sensitive detection of uranyl ions with a specially designed high-efficiency SERS-based microfluidic device. Sci China Chem 2019. [DOI: 10.1007/s11426-019-9468-x] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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123
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Feng M, Gu C, Sun Y, Zhang S, Tong A, Xiang Y. Enhancing Catalytic Activity of Uranyl-Dependent DNAzyme by Flexible Linker Insertion for More Sensitive Detection of Uranyl Ion. Anal Chem 2019; 91:6608-6615. [PMID: 31016961 DOI: 10.1021/acs.analchem.9b00490] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The uranyl-dependent DNAzyme 39E cleaves its nucleic acid substrate in the presence of uranyl ion (UO22+). It has been widely utilized in many sensor designs for selective and sensitive detection of UO22+ in the environment and inside live cells. In this work, by inserting a flexible linker (C3 Spacer) into one critical site (A20) of the 39E catalytic core, we successfully enhanced the original catalytic activity of 39E up to 8.1-fold at low UO22+ concentrations. Applying such a modified DNAzyme (39E-A20-C3) in a label-free fluorescent sensor for UO22+ detection achieved more than 1 order of magnitude sensitivity enhancement over using native 39E, with the UO22+ detection limit improved from 2.6 nM (0.63 ppb) to 0.19 nM (0.047 ppb), while the high selectivity to UO22+ over other metal ions was fully preserved. The method was also successfully applied for the detection of UO22+-spiked environmental water samples to demonstrate its practical usefulness.
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Affiliation(s)
- Mengli Feng
- Department of Chemistry, Beijing Key Laboratory for Microanalytical Methods and Instrumentation, Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology (Ministry of Education) , Tsinghua University , Beijing 100084 , People's Republic of China
| | - Chunmei Gu
- Department of Chemistry, Beijing Key Laboratory for Microanalytical Methods and Instrumentation, Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology (Ministry of Education) , Tsinghua University , Beijing 100084 , People's Republic of China
| | - Yanping Sun
- School of Chemistry and Biological Engineering , University of Science and Technology Beijing , Beijing 100083 , People's Republic of China
| | - Shuyuan Zhang
- School of Chemistry and Biological Engineering , University of Science and Technology Beijing , Beijing 100083 , People's Republic of China
| | - Aijun Tong
- Department of Chemistry, Beijing Key Laboratory for Microanalytical Methods and Instrumentation, Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology (Ministry of Education) , Tsinghua University , Beijing 100084 , People's Republic of China
| | - Yu Xiang
- Department of Chemistry, Beijing Key Laboratory for Microanalytical Methods and Instrumentation, Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology (Ministry of Education) , Tsinghua University , Beijing 100084 , People's Republic of China
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124
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Nie F, Ga L, Ai J. One-Pot Synthesis of Nucleoside-Templated Fluorescent Silver Nanoparticles and Gold Nanoparticles. ACS OMEGA 2019; 4:7643-7649. [PMID: 31459856 PMCID: PMC6649123 DOI: 10.1021/acsomega.9b00701] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/13/2019] [Accepted: 04/12/2019] [Indexed: 06/10/2023]
Abstract
In this study, a simple one-pot method was proposed to synthesize water-soluble nucleoside-templated fluorescent silver nanoparticles (Ag NPs) and gold nanoparticles (Au NPs). The nucleoside-templated fluorescent Ag NPs and Au NPs were further characterized by transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (FTIR), and fluorescence spectroscopy (FLS). The effects of the molar ratio of reactants, reaction environment, and nucleotides on the synthesis of Ag NPs and Au NPs were also discussed. The results showed that nucleoside and ascorbic acid acted as a stabilizer and reductant, respectively, in the synthesis of Ag NPs and Au NPs, while citrate buffer acted as both a pH regulator and reductant. The synthesized nucleoside-templated fluorescent Ag NPs and Au NPs have good fluorescence stability and easy water solubility. In this study, a simple one-pot method was proposed to synthesize water-soluble nucleoside-templated fluorescent silver nanoparticles (Ag NPs) and gold nanoparticles (Au NPs).
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Affiliation(s)
- Furong Nie
- College
of Chemistry and Enviromental Science and Inner Mongolia Key Laboratory for
Physics and Chemistry of Functional Materials, Inner Mongolia Normal University, 81 Zhaowudalu, Hohhot 010022, China
| | - Lu Ga
- College
of Pharmacy, Inner Mongolia Medical University, Jinchuankaifaqu, Hohhot 010110, People’s Republic of China
| | - Jun Ai
- College
of Chemistry and Enviromental Science and Inner Mongolia Key Laboratory for
Physics and Chemistry of Functional Materials, Inner Mongolia Normal University, 81 Zhaowudalu, Hohhot 010022, China
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125
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Abstract
Advances in nucleic acid sequencing and genotyping technologies have facilitated the discovery of an increasing number of single-nucleotide variations (SNVs) associated with disease onset, progression, and response to therapy. The reliable detection of such disease-specific SNVs can ensure timely and effective therapeutic action, enabling precision medicine. This has driven extensive efforts in recent years to develop novel methods for the fast and cost-effective analysis of targeted SNVs. In this Review, we highlight the most recent and significant advances made toward the development of such methodologies.
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Affiliation(s)
- Alireza Abi
- Department of Chemistry, Faculty of Sciences, Shiraz University, Shiraz 7194684795, Iran
| | - Afsaneh Safavi
- Department of Chemistry, Faculty of Sciences, Shiraz University, Shiraz 7194684795, Iran
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126
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A quencher-free DNAzyme beacon for fluorescently sensing uranyl ions via embedding 2-aminopurine. Biosens Bioelectron 2019; 135:166-172. [PMID: 31009884 DOI: 10.1016/j.bios.2019.04.021] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2019] [Revised: 03/24/2019] [Accepted: 04/10/2019] [Indexed: 01/23/2023]
Abstract
DNAzyme-based fluorescent probes have provided valuable protocols for detecting uranium, one of the most common radioactive contaminants in the environment, with ultra-high selectivity and sensitivity. Designing novel DNAzyme beacons to update the mode of fluorescence reporting and/or quenching will continuously enhance "turn-on" sensing performance as well as promote actual application of the biological probes. In this work, we developed a novel quencher-free DNAzyme beacon by embedding fluorescent 2-aminopurine for rapid detection of uranyl ion. 2-aminopurine is able to substitute adenine and keep strong fluorescence in single-stranded DNA whereas being quenched in the hybridized double-stranded DNA by the base-stacking interaction. The combination of such trait of 2-aminopurine and cleavage reaction of DNAzyme in the presence of target co-factors possesses two main advantages for ion sensing: simplicity for avoidance of extra quencher groups and high performance because of superiority of DNAzyme essence. The experimental conditions including embedding site, pH and salt concentration of buffer solutions, and the amount ratio of enzyme strand to substrate strand used to form DNAzymes were systematically optimized to inspire the highest performance of the biological beacon. Thus, a detection limit of 9.6 nM, a wide linear range from 5 nM to 400 nM (R2 = 0.997), and selectivity of more than 400 000-fold over other metal ions were achieved by the novel DNAzyme probes. The highly sensitive, selective and quencher-free DNAzyme probes accommodated a simple and cost-efficient alternative to current fluorescent counterparts, holding a great potential for further application in practical ion assay.
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127
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Shen R, Zou L, Wu S, Li T, Wang J, Liu J, Ling L. A novel label-free fluorescent detection of histidine based upon Cu 2+-specific DNAzyme and hybridization chain reaction. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2019; 213:42-47. [PMID: 30682646 DOI: 10.1016/j.saa.2019.01.062] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/16/2018] [Revised: 01/16/2019] [Accepted: 01/16/2019] [Indexed: 06/09/2023]
Abstract
A novel label-free fluorescent sensor for histidine was developed based upon Cu2+-specific DNAzyme, hybridization chain reaction(HCR) and triplex DNA. Cu2+ can bind to the histidine, in the presence of histidine, leading to the inhibition of the cleavage of substrate strand of Cu2+-dependent DNAzyme, then the intact substrate strand trigger the HCR between H1 and H2. The HCR product can be recognized by triplex-forming oligonucleotide (TFO) through triplex formation and reported by the fluorescence of berberine, the fluorescence intensity of the sensing system was proportional to the concentration of histidine during the range of 5.7-455 nmol L-1, with a detection limit of 2.0 nmol L-1.
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Affiliation(s)
- Ruidi Shen
- School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, PR China
| | - Li Zou
- School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, PR China
| | - Shixin Wu
- Maternal and Child Care Service Centre of Yunxi County, Shiyan 442600, PR China
| | - Tingting Li
- School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, PR China
| | - Jing Wang
- School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, PR China
| | - Jianmin Liu
- Department of Neurosurgery, the First Affiliated Hospital of Guangzhou University of Traditional Chinese Medicine, Guangzhou 510405, PR China
| | - Liansheng Ling
- School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, PR China.
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128
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Wang J, Wang DX, Tang AN, Kong DM. Highly Integrated, Biostable, and Self-Powered DNA Motor Enabling Autonomous Operation in Living Bodies. Anal Chem 2019; 91:5244-5251. [DOI: 10.1021/acs.analchem.9b00007] [Citation(s) in RCA: 44] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Jing Wang
- State Key Laboratory of Medicinal Chemical Biology, Tianjin Key Laboratory of Biosensing and Molecular Recognition, Research Centre for Analytical Sciences, College of Chemistry, Nankai University, Tianjin, 300071, People’s Republic of China
| | - Dong-Xia Wang
- State Key Laboratory of Medicinal Chemical Biology, Tianjin Key Laboratory of Biosensing and Molecular Recognition, Research Centre for Analytical Sciences, College of Chemistry, Nankai University, Tianjin, 300071, People’s Republic of China
| | - An-Na Tang
- State Key Laboratory of Medicinal Chemical Biology, Tianjin Key Laboratory of Biosensing and Molecular Recognition, Research Centre for Analytical Sciences, College of Chemistry, Nankai University, Tianjin, 300071, People’s Republic of China
| | - De-Ming Kong
- State Key Laboratory of Medicinal Chemical Biology, Tianjin Key Laboratory of Biosensing and Molecular Recognition, Research Centre for Analytical Sciences, College of Chemistry, Nankai University, Tianjin, 300071, People’s Republic of China
- Collaborative Innovation Center of Chemical Science and Engineering, Tianjin, 300071, People’s Republic of China
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129
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Wang SS, Ellington AD. Pattern Generation with Nucleic Acid Chemical Reaction Networks. Chem Rev 2019; 119:6370-6383. [DOI: 10.1021/acs.chemrev.8b00625] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Siyuan S. Wang
- Institute for Cellular and Molecular Biology, University of Texas at Austin, Austin, Texas 78712, United States
| | - Andrew D. Ellington
- Institute for Cellular and Molecular Biology, University of Texas at Austin, Austin, Texas 78712, United States
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130
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Zhai F, Yu Q, Zhou H, Liu J, Yang W, You J. Electrochemical selective detection of carnitine enantiomers coupling copper ion dependent DNAzyme with DNA assistant hybridization chain reaction. J Electroanal Chem (Lausanne) 2019. [DOI: 10.1016/j.jelechem.2019.02.020] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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131
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Huang Y, Ren J, Qu X. Nanozymes: Classification, Catalytic Mechanisms, Activity Regulation, and Applications. Chem Rev 2019; 119:4357-4412. [PMID: 30801188 DOI: 10.1021/acs.chemrev.8b00672] [Citation(s) in RCA: 1498] [Impact Index Per Article: 299.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Because of the high catalytic activities and substrate specificity, natural enzymes have been widely used in industrial, medical, and biological fields, etc. Although promising, they often suffer from intrinsic shortcomings such as high cost, low operational stability, and difficulties of recycling. To overcome these shortcomings, researchers have been devoted to the exploration of artificial enzyme mimics for a long time. Since the discovery of ferromagnetic nanoparticles with intrinsic horseradish peroxidase-like activity in 2007, a large amount of studies on nanozymes have been constantly emerging in the next decade. Nanozymes are one kind of nanomaterials with enzymatic catalytic properties. Compared with natural enzymes, nanozymes have the advantages such as low cost, high stability and durability, which have been widely used in industrial, medical, and biological fields. A thorough understanding of the possible catalytic mechanisms will contribute to the development of novel and high-efficient nanozymes, and the rational regulations of the activities of nanozymes are of great significance. In this review, we systematically introduce the classification, catalytic mechanism, activity regulation as well as recent research progress of nanozymes in the field of biosensing, environmental protection, and disease treatments, etc. in the past years. We also propose the current challenges of nanozymes as well as their future research focus. We anticipate this review may be of significance for the field to understand the properties of nanozymes and the development of novel nanomaterials with enzyme mimicking activities.
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Affiliation(s)
- Yanyan Huang
- Laboratory of Chemical Biology and State Key Laboratory of Rare Earth Resource Utilization , Changchun Institute of Applied Chemistry, Chinese Academy of Sciences , Changchun , Jilin 130022 , China.,College of Light Industry and Food Engineering , Nanjing Forestry University , Nanjing 210037 , China
| | - Jinsong Ren
- Laboratory of Chemical Biology and State Key Laboratory of Rare Earth Resource Utilization , Changchun Institute of Applied Chemistry, Chinese Academy of Sciences , Changchun , Jilin 130022 , China
| | - Xiaogang Qu
- Laboratory of Chemical Biology and State Key Laboratory of Rare Earth Resource Utilization , Changchun Institute of Applied Chemistry, Chinese Academy of Sciences , Changchun , Jilin 130022 , China
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132
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Electrochemical analysis of 8-hydroxy-2'-deoxyguanosine with enhanced sensitivity based on exonuclease-mediated functional nucleic acid. Talanta 2019; 199:324-328. [PMID: 30952266 DOI: 10.1016/j.talanta.2019.02.080] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2018] [Revised: 02/16/2019] [Accepted: 02/21/2019] [Indexed: 01/27/2023]
Abstract
In this work, an electrochemical method for sensitive analysis of 8-hydroxy-2'-deoxyguanosine, a key biomarker that is widely used to study oxidative injury-related diseases, is proposed based on exonuclease-mediated functional nucleic acid. In the design, exonuclease can not only distinguish the existence of target, but also suppress the background noise, thus the sensitivity can be enhanced. Moreover, DNAzyme designed in the functional nucleic acid can further improve the sensitivity of the analysis during signal generation process. Therefore, exonuclease-mediated functional nucleic acid may ensure high sensitivity of the assay. Further studies reveal that the detection of 8-hydroxy-2'-deoxyguanosine can be achieved with a linearity from 0.01 nM to 7.0 μM and a detection limit of 6.82 pM. The new method has also been successfully applied to the determination of 8-OHdG in urine with good results, indicating its great potential for practical use.
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133
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Peeters B, Daems D, Van der Donck T, Delport F, Lammertyn J. Real-Time FO-SPR Monitoring of Solid-Phase DNAzyme Cleavage Activity for Cutting-Edge Biosensing. ACS APPLIED MATERIALS & INTERFACES 2019; 11:6759-6768. [PMID: 30682241 DOI: 10.1021/acsami.8b18756] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
DNA nanotechnology has a great potential in biosensor design including nanostructuring of the biosensor surface through DNA origami, target recognition by means of aptamers, and DNA-based signal amplification strategies. In this paper, we use DNA nanotechnology to describe for the first time the concept of real-time solid-phase monitoring of DNAzyme cleavage activity for the detection of specific single-stranded DNA (ssDNA) with a fiber optic surface plasmon resonance (FO-SPR) biosensor. Hereto, we first developed a robust ligation strategy for the functionalization of the FO-SPR biosensing surface with ssDNA-tethered gold nanoparticles, serving as the substrate for the DNAzyme. Next, we established a relation between the SPR signal change, due to the cleavage activity of the 10-23 DNAzyme, and the concentration of the DNAzyme, showing faster cleavage kinetics for higher DNAzyme concentrations. Finally, we implemented this generic concept for biosensing of ssDNA target in solution. Hereto, we designed a DNAzyme-inhibitor complex, consisting of an internal loop structure complementary to the ssDNA target, that releases active DNAzyme molecules in a controlled way as a function of the target concentration. We demonstrated reproducible target detection with a theoretical limit of detection of 1.4 nM, proving that the presented ligation strategy is key to a universal DNAzyme-based FO-SPR biosensing concept with promising applications in the medical and agrofood sector.
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Affiliation(s)
- Bernd Peeters
- Department of Biosystems, Biosensors Group , KU Leuven , Willem de Croylaan 42 , B-3001 Leuven , Belgium
| | - Devin Daems
- Department of Biosystems, Biosensors Group , KU Leuven , Willem de Croylaan 42 , B-3001 Leuven , Belgium
| | - Tom Van der Donck
- Department of Materials Engineering , KU Leuven , Kasteelpark Arenberg 44 , B-3001 Leuven , Belgium
| | - Filip Delport
- FOx Biosystems NV , Veldstraat 120 , B-9140 Temse , Belgium
| | - Jeroen Lammertyn
- Department of Biosystems, Biosensors Group , KU Leuven , Willem de Croylaan 42 , B-3001 Leuven , Belgium
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134
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Sensitive detection of chloramphenicol based on Ag-DNAzyme-mediated signal amplification modulated by DNA/metal ion interaction. Biosens Bioelectron 2019; 127:45-49. [DOI: 10.1016/j.bios.2018.12.016] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2018] [Revised: 12/05/2018] [Accepted: 12/11/2018] [Indexed: 12/16/2022]
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135
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Wan YH, Zhou YJ, Xiao KJ, Nie CP, Zhang J, Liu C, Chen TT, Chu X. Target-assisted self-cleavage DNAzyme probes for multicolor simultaneous imaging of tumor-related microRNAs with signal amplification. Chem Commun (Camb) 2019; 55:3278-3281. [DOI: 10.1039/c9cc00451c] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A novel and highly selective signal amplification strategy was developed based on target-assisted self-cleavage DNAzyme probes for imaging of miRNA-222 and miRNA-223.
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Affiliation(s)
- Yuan-Hui Wan
- Institute of Chemical Biology and Nanomedicine
- State Key Laboratory of Chemo/Bio-Sensing and Chemometrics
- College of Chemistry and Chemical Engineering
- Hunan University
- Changsha 410082
| | - Yu-Jie Zhou
- Institute of Chemical Biology and Nanomedicine
- State Key Laboratory of Chemo/Bio-Sensing and Chemometrics
- College of Chemistry and Chemical Engineering
- Hunan University
- Changsha 410082
| | - Ke-Jing Xiao
- Institute of Chemical Biology and Nanomedicine
- State Key Laboratory of Chemo/Bio-Sensing and Chemometrics
- College of Chemistry and Chemical Engineering
- Hunan University
- Changsha 410082
| | - Cun-Peng Nie
- Institute of Chemical Biology and Nanomedicine
- State Key Laboratory of Chemo/Bio-Sensing and Chemometrics
- College of Chemistry and Chemical Engineering
- Hunan University
- Changsha 410082
| | - Juan Zhang
- Institute of Chemical Biology and Nanomedicine
- State Key Laboratory of Chemo/Bio-Sensing and Chemometrics
- College of Chemistry and Chemical Engineering
- Hunan University
- Changsha 410082
| | - Chang Liu
- Institute of Chemical Biology and Nanomedicine
- State Key Laboratory of Chemo/Bio-Sensing and Chemometrics
- College of Chemistry and Chemical Engineering
- Hunan University
- Changsha 410082
| | - Ting-Ting Chen
- Institute of Chemical Biology and Nanomedicine
- State Key Laboratory of Chemo/Bio-Sensing and Chemometrics
- College of Chemistry and Chemical Engineering
- Hunan University
- Changsha 410082
| | - Xia Chu
- Institute of Chemical Biology and Nanomedicine
- State Key Laboratory of Chemo/Bio-Sensing and Chemometrics
- College of Chemistry and Chemical Engineering
- Hunan University
- Changsha 410082
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136
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Yang Y, Zhong S, Wang K, Huang J. Gold nanoparticle based fluorescent oligonucleotide probes for imaging and therapy in living systems. Analyst 2019; 144:1052-1072. [DOI: 10.1039/c8an02070a] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Gold nanoparticles (AuNPs) with unique physical and chemical properties have become an integral part of research in nanoscience.
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Affiliation(s)
- Yanjing Yang
- College of Chemistry and Chemical Engineering
- Central South University
- Changsha
- PR China
- State Key Laboratory of Chemo/Biosensing and Chemometrics
| | - Shian Zhong
- College of Chemistry and Chemical Engineering
- Central South University
- Changsha
- PR China
| | - Kemin Wang
- State Key Laboratory of Chemo/Biosensing and Chemometrics
- College of Chemistry and Chemical Engineering
- Key Laboratory for Bio-Nanotechnology and Molecular Engineering of Hunan Province
- Hunan University
- Changsha 410082
| | - Jin Huang
- State Key Laboratory of Chemo/Biosensing and Chemometrics
- College of Chemistry and Chemical Engineering
- Key Laboratory for Bio-Nanotechnology and Molecular Engineering of Hunan Province
- Hunan University
- Changsha 410082
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137
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Pan J, Li Q, Zhou D, Chen J. Label-free and highly sensitive fluorescence detection of lead(ii) based on DNAzyme and exonuclease III-assisted cascade signal amplification. NEW J CHEM 2019. [DOI: 10.1039/c8nj06522e] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
A Pb2+ biosensor has been constructed based on Exo III-assisted cascade signal amplification using 2-amino-5,6,7-trimethyl-1,8-naphthyridine as the signal indicator.
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Affiliation(s)
- Jiafeng Pan
- Guangdong Key Laboratory of Integrated Agro-Environmental Pollution Control and Management
- Guangdong Institute of Eco-Environmental Science & Technology
- Guangzhou 510650
- China
| | - Qiong Li
- Guangdong Key Laboratory of Integrated Agro-Environmental Pollution Control and Management
- Guangdong Institute of Eco-Environmental Science & Technology
- Guangzhou 510650
- China
- College of Bioscience and Biotechnology
| | - Danhua Zhou
- Guangdong Key Laboratory of Integrated Agro-Environmental Pollution Control and Management
- Guangdong Institute of Eco-Environmental Science & Technology
- Guangzhou 510650
- China
- College of Natural Resources and Environment
| | - Junhua Chen
- Guangdong Key Laboratory of Integrated Agro-Environmental Pollution Control and Management
- Guangdong Institute of Eco-Environmental Science & Technology
- Guangzhou 510650
- China
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138
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Deng R, Yang H, Dong Y, Zhao Z, Xia X, Li Y, Li J. Temperature-Robust DNAzyme Biosensors Confirming Ultralow Background Detection. ACS Sens 2018; 3:2660-2666. [PMID: 30457325 DOI: 10.1021/acssensors.8b01122] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Catalytic DNA/RNA, such as DNAzyme, has been widely adopted to construct biosensors, especially for metal ion analysis. However, traditional DNAzyme biosensors still suffer from fluctuating and relatively high background. Herein, we proposed a temperature-robust DNAzyme, conferring ultralow background in various temperatures, thus leading to highly sensitive and robust detection of metal ions. Instead of labeling substrate to directly output fluorescence signal, our proposed DNAzyme biosensor utilized a sequential detection process with a couple of proximity fluorescent probes, confirming very low background regardless of the conditions of cleavage reaction. This sequential DNAzyme biosensor conferred a signal to background ratio over 20 when the temperature of the catalytic reaction ranged from 20 to 41 °C. Benefitting from its ultralow background, it could confer a detection limit of 0.22 nM, which ranked as one of the highest sensitivity levels among DNAzyme-based fluorescent biosensors. This DNAzyme biosensor was over 6000 times more selective for Pb2+ against the most active interfering metal ions, Zn2+. Further, it has been successfully applied for analyzing lead pollution in tap water and eggs, with total recoveries ranging from 87% to 114%. This facile, simple, and effective design strategy would significantly improve the detection performance of DNAzyme biosensors, thus facilitating its practical applications for both food safety analysis and environment monitoring.
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Affiliation(s)
- Ruijie Deng
- College of Light Industry, Textile and Food Engineering, Healthy Food Evaluation Research Center and Key Laboratory of Food Science and Technology of Ministry of Education of Sichuan Province, Sichuan University, Chengdu 610065, China
- Department of Chemistry, Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology, Tsinghua University, Beijing 100084, China
| | - Hao Yang
- College of Light Industry, Textile and Food Engineering, Healthy Food Evaluation Research Center and Key Laboratory of Food Science and Technology of Ministry of Education of Sichuan Province, Sichuan University, Chengdu 610065, China
| | - Yi Dong
- College of Light Industry, Textile and Food Engineering, Healthy Food Evaluation Research Center and Key Laboratory of Food Science and Technology of Ministry of Education of Sichuan Province, Sichuan University, Chengdu 610065, China
| | - Zhifeng Zhao
- College of Light Industry, Textile and Food Engineering, Healthy Food Evaluation Research Center and Key Laboratory of Food Science and Technology of Ministry of Education of Sichuan Province, Sichuan University, Chengdu 610065, China
| | - Xuhan Xia
- College of Light Industry, Textile and Food Engineering, Healthy Food Evaluation Research Center and Key Laboratory of Food Science and Technology of Ministry of Education of Sichuan Province, Sichuan University, Chengdu 610065, China
| | - Yue Li
- Department of Chemistry, Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology, Tsinghua University, Beijing 100084, China
| | - Jinghong Li
- Department of Chemistry, Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology, Tsinghua University, Beijing 100084, China
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139
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He Y, Zhou Y, Chen D, Liu J. Global Folding of a Na
+
‐Specific DNAzyme Studied by FRET. Chembiochem 2018; 20:385-393. [DOI: 10.1002/cbic.201800548] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2018] [Indexed: 12/24/2022]
Affiliation(s)
- Yanping He
- State Key Laboratory of Precision Measurement Technology and InstrumentsUniversity of Tianjin Tianjin 300072 P.R. China
- Department of Chemistry, Waterloo Institute for NanotechnologyUniversity of Waterloo Waterloo Ontario N2L 3G1 Canada
| | - Yibo Zhou
- School of Chemistry and Biological EngineeringChangsha University of Science and Technology Changsha 410114 P.R. China
| | - Da Chen
- State Key Laboratory of Precision Measurement Technology and InstrumentsUniversity of Tianjin Tianjin 300072 P.R. China
| | - Juewen Liu
- Department of Chemistry, Waterloo Institute for NanotechnologyUniversity of Waterloo Waterloo Ontario N2L 3G1 Canada
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140
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Gu L, Saran R, Yan W, Huang PJJ, Wang S, Lyu M, Liu J. Reselection Yielding a Smaller and More Active Silver-Specific DNAzyme. ACS OMEGA 2018; 3:15174-15181. [PMID: 31458180 PMCID: PMC6643755 DOI: 10.1021/acsomega.8b02039] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/14/2018] [Accepted: 10/31/2018] [Indexed: 05/11/2023]
Abstract
Ag10c is a recently reported RNA-cleaving DNAzyme obtained from in vitro selection. Its cleavage activity selectively requires Ag+ ions, and thus it has been used as a sensor for Ag+ detection. However, the previous selection yielded very limited information regarding its sequence requirement, since only ∼0.1% of the population in the final library were related to Ag10c and most other sequences were inactive. In this work, we performed a reselection by randomizing the 19 important nucleotides in Ag10c in such a way that a purine has an equal chance of being A or G, whereas a pyrimidine has an equal chance of being T or C. The round 3 library of the reselection was carefully analyzed and a statistic understanding of the relative importance of each nucleotide was obtained. At the same time, a more active mutant was identified, containing two mutated nucleotides. Further analysis indicated new base pairs leading to an enzyme with smaller catalytic loops but with ∼200% activity of the original Ag10c, and also excellent selectivity for Ag+. Therefore, a more active mutant of Ag10c was obtained and further truncations were successfully performed, which might be better candidates for developing new biosensors for silver. A deeper biochemical understanding was also obtained using this reselection method.
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Affiliation(s)
- Lide Gu
- College
of Marine Life and Fisheries and Jiangsu Key Laboratory of Marine
Bioresources and Environment, Huaihai Institute
of Technology, Lianyungang 222005, P. R. China
- Marine
Resources Development Institute of Jiangsu, Lianyungang 222005, P. R. China
- Department
of Chemistry, Waterloo Institute for Nanotechnology, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada
| | - Runjhun Saran
- Department
of Chemistry, Waterloo Institute for Nanotechnology, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada
| | - Wanli Yan
- College
of Marine Life and Fisheries and Jiangsu Key Laboratory of Marine
Bioresources and Environment, Huaihai Institute
of Technology, Lianyungang 222005, P. R. China
- Marine
Resources Development Institute of Jiangsu, Lianyungang 222005, P. R. China
| | - Po-Jung Jimmy Huang
- Department
of Chemistry, Waterloo Institute for Nanotechnology, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada
| | - Shujun Wang
- College
of Marine Life and Fisheries and Jiangsu Key Laboratory of Marine
Bioresources and Environment, Huaihai Institute
of Technology, Lianyungang 222005, P. R. China
- Marine
Resources Development Institute of Jiangsu, Lianyungang 222005, P. R. China
| | - Mingsheng Lyu
- College
of Marine Life and Fisheries and Jiangsu Key Laboratory of Marine
Bioresources and Environment, Huaihai Institute
of Technology, Lianyungang 222005, P. R. China
- Marine
Resources Development Institute of Jiangsu, Lianyungang 222005, P. R. China
- Department
of Chemistry, Waterloo Institute for Nanotechnology, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada
- E-mail: (M.L.)
| | - Juewen Liu
- Department
of Chemistry, Waterloo Institute for Nanotechnology, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada
- E-mail: (J.L.)
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141
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RNA-Cleaving DNAzymes: Old Catalysts with New Tricks for Intracellular and In Vivo Applications. Catalysts 2018. [DOI: 10.3390/catal8110550] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
DNAzymes are catalytically active DNA molecules that are normally isolated through in vitro selection methods, among which RNA-cleaving DNAzymes that catalyze the cleavage of a single RNA linkage embedded within a DNA strand are the most studied group of this DNA enzyme family. Recent advances in DNA nanotechnology and engineering have generated many RNA-cleaving DNAzymes with unique recognition and catalytic properties. Over the past decade, numerous RNA-cleaving, DNAzymes-based functional probes have been introduced into many research areas, such as in vitro diagnostics, intracellular imaging, and in vivo therapeutics. This review focus on the fundamental insight into RNA-Cleaving DNAzymes and technical tricks for their intracellular and in vivo applications, highlighting the recent progress in the clinical trial of RNA-Cleaving DNAzymes with selected examples. The challenges and opportunities for the future translation of RNA-cleaving DNAzymes for biomedicine are also discussed.
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142
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Mu Q, Liu G, Yang D, Kou X, Cao N, Tang Y, Miao P. Ultrasensitive Detection of DNA Based on Exonuclease III-Assisted Recycling Amplification and DNAzyme Motor. Bioconjug Chem 2018; 29:3527-3531. [DOI: 10.1021/acs.bioconjchem.8b00774] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Qianhui Mu
- Bureau of Facility Support and Budget, Chinese Academy of Sciences, Beijing, 100864, P. R. China
| | - Guangxing Liu
- Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Sciences, Suzhou 215163, P. R. China
- University of Science and Technology of China, Hefei 230026, P. R. China
| | - Dawei Yang
- Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Sciences, Suzhou 215163, P. R. China
| | - Xinyue Kou
- Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Sciences, Suzhou 215163, P. R. China
- University of Science and Technology of China, Hefei 230026, P. R. China
| | - Ning Cao
- Bureau of Facility Support and Budget, Chinese Academy of Sciences, Beijing, 100864, P. R. China
| | - Yuguo Tang
- Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Sciences, Suzhou 215163, P. R. China
| | - Peng Miao
- Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Sciences, Suzhou 215163, P. R. China
- University of Science and Technology of China, Hefei 230026, P. R. China
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143
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Song J, Xu C, Huang S, Lei W, Ruan Y, Lu H, Zhao W, Xu J, Chen H. Ultrasmall Nanopipette: Toward Continuous Monitoring of Redox Metabolism at Subcellular Level. Angew Chem Int Ed Engl 2018; 57:13226-13230. [DOI: 10.1002/anie.201808537] [Citation(s) in RCA: 61] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2018] [Indexed: 11/08/2022]
Affiliation(s)
- Juan Song
- State Key Laboratory of Analytical Chemistry for, Life Science and Collaborative Innovation Center of, Chemistry for Life SciencesSchool of Chemistry and Chemical EngineeringNanjing University Nanjing 210023 China
| | - Cong‐Hui Xu
- State Key Laboratory of Analytical Chemistry for, Life Science and Collaborative Innovation Center of, Chemistry for Life SciencesSchool of Chemistry and Chemical EngineeringNanjing University Nanjing 210023 China
| | - Shi‐Zhen Huang
- State Key Laboratory of Analytical Chemistry for, Life Science and Collaborative Innovation Center of, Chemistry for Life SciencesSchool of Chemistry and Chemical EngineeringNanjing University Nanjing 210023 China
| | - Wen Lei
- State Key Laboratory of Analytical Chemistry for, Life Science and Collaborative Innovation Center of, Chemistry for Life SciencesSchool of Chemistry and Chemical EngineeringNanjing University Nanjing 210023 China
| | - Yi‐Fan Ruan
- State Key Laboratory of Analytical Chemistry for, Life Science and Collaborative Innovation Center of, Chemistry for Life SciencesSchool of Chemistry and Chemical EngineeringNanjing University Nanjing 210023 China
| | - Hai‐Jie Lu
- State Key Laboratory of Analytical Chemistry for, Life Science and Collaborative Innovation Center of, Chemistry for Life SciencesSchool of Chemistry and Chemical EngineeringNanjing University Nanjing 210023 China
| | - Wei Zhao
- State Key Laboratory of Analytical Chemistry for, Life Science and Collaborative Innovation Center of, Chemistry for Life SciencesSchool of Chemistry and Chemical EngineeringNanjing University Nanjing 210023 China
| | - Jing‐Juan Xu
- State Key Laboratory of Analytical Chemistry for, Life Science and Collaborative Innovation Center of, Chemistry for Life SciencesSchool of Chemistry and Chemical EngineeringNanjing University Nanjing 210023 China
| | - Hong‐Yuan Chen
- State Key Laboratory of Analytical Chemistry for, Life Science and Collaborative Innovation Center of, Chemistry for Life SciencesSchool of Chemistry and Chemical EngineeringNanjing University Nanjing 210023 China
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144
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Song J, Xu C, Huang S, Lei W, Ruan Y, Lu H, Zhao W, Xu J, Chen H. Ultrasmall Nanopipette: Toward Continuous Monitoring of Redox Metabolism at Subcellular Level. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201808537] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Juan Song
- State Key Laboratory of Analytical Chemistry for, Life Science and Collaborative Innovation Center of, Chemistry for Life SciencesSchool of Chemistry and Chemical EngineeringNanjing University Nanjing 210023 China
| | - Cong‐Hui Xu
- State Key Laboratory of Analytical Chemistry for, Life Science and Collaborative Innovation Center of, Chemistry for Life SciencesSchool of Chemistry and Chemical EngineeringNanjing University Nanjing 210023 China
| | - Shi‐Zhen Huang
- State Key Laboratory of Analytical Chemistry for, Life Science and Collaborative Innovation Center of, Chemistry for Life SciencesSchool of Chemistry and Chemical EngineeringNanjing University Nanjing 210023 China
| | - Wen Lei
- State Key Laboratory of Analytical Chemistry for, Life Science and Collaborative Innovation Center of, Chemistry for Life SciencesSchool of Chemistry and Chemical EngineeringNanjing University Nanjing 210023 China
| | - Yi‐Fan Ruan
- State Key Laboratory of Analytical Chemistry for, Life Science and Collaborative Innovation Center of, Chemistry for Life SciencesSchool of Chemistry and Chemical EngineeringNanjing University Nanjing 210023 China
| | - Hai‐Jie Lu
- State Key Laboratory of Analytical Chemistry for, Life Science and Collaborative Innovation Center of, Chemistry for Life SciencesSchool of Chemistry and Chemical EngineeringNanjing University Nanjing 210023 China
| | - Wei Zhao
- State Key Laboratory of Analytical Chemistry for, Life Science and Collaborative Innovation Center of, Chemistry for Life SciencesSchool of Chemistry and Chemical EngineeringNanjing University Nanjing 210023 China
| | - Jing‐Juan Xu
- State Key Laboratory of Analytical Chemistry for, Life Science and Collaborative Innovation Center of, Chemistry for Life SciencesSchool of Chemistry and Chemical EngineeringNanjing University Nanjing 210023 China
| | - Hong‐Yuan Chen
- State Key Laboratory of Analytical Chemistry for, Life Science and Collaborative Innovation Center of, Chemistry for Life SciencesSchool of Chemistry and Chemical EngineeringNanjing University Nanjing 210023 China
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145
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Xu L, Zhang P, Liu Y, Fang X, Zhang Z, Liu Y, Peng L, Liu J. Continuously Tunable Nucleotide/Lanthanide Coordination Nanoparticles for DNA Adsorption and Sensing. ACS OMEGA 2018; 3:9043-9051. [PMID: 31459038 PMCID: PMC6644583 DOI: 10.1021/acsomega.8b01217] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/03/2018] [Accepted: 08/07/2018] [Indexed: 05/02/2023]
Abstract
Metal-organic coordination polymers (CPs) have attracted great research interest because they are easy to prepare, porous, flexible in composition, and designable in structure. Their applications in biosensor development, drug delivery, and catalysis have been explored. Lanthanides and nucleotides can form interesting CPs, although most previous works have focused on a single type of metal ligand. In this work, we explored mixed nucleotides and studied their DNA adsorption properties using fluorescently labeled oligonucleotides. Adenosine monophosphate (AMP) and guanosine monophosphate (GMP) formed negatively charged CP nanoparticles with most lanthanides, and thus a salt was required to adsorb negatively charged DNA. DNA adsorption was faster and reached a higher capacity with lighter lanthanides. Desorption of pre-adsorbed DNA by inorganic phosphates, urea, proteins, surfactants, and competing DNA was successively carried out. The results suggested the importance of the DNA phosphate backbone, although hydrogen bonding and DNA bases also contributed to adsorption. The AMP CPs adsorbed DNA more strongly than the GMP ones, and using mixtures of AMP and GMP, continuous tuning of DNA adsorption affinity was achieved. Such CPs were also used as a sensor for DNA detection based on the different affinities of single- and double-stranded DNA, and a detection limit of 0.9 nM target DNA was achieved. Instead of tuning DNA adsorption by varying the length and sequence of DNA, the composition of CPs can also be controlled to achieve this goal.
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Affiliation(s)
- Li Xu
- School of Chemistry
and Chemical Engineering, Guangdong Pharmaceutical
University, Zhongshan 528458, P. R. China
- Department
of Chemistry and Waterloo Institute for Nanotechnology, University of Waterloo, 200 University Avenue West, Waterloo N2L 3G1, Ontario, Canada
| | - Peipei Zhang
- School of Chemistry
and Chemical Engineering, Guangdong Pharmaceutical
University, Zhongshan 528458, P. R. China
| | - Yan Liu
- School of Chemistry
and Chemical Engineering, Guangdong Pharmaceutical
University, Zhongshan 528458, P. R. China
| | - Xiaoqiang Fang
- School of Chemistry
and Chemical Engineering, Guangdong Pharmaceutical
University, Zhongshan 528458, P. R. China
| | - Zijie Zhang
- Department
of Chemistry and Waterloo Institute for Nanotechnology, University of Waterloo, 200 University Avenue West, Waterloo N2L 3G1, Ontario, Canada
| | - Yibo Liu
- Department
of Chemistry and Waterloo Institute for Nanotechnology, University of Waterloo, 200 University Avenue West, Waterloo N2L 3G1, Ontario, Canada
| | - Lulu Peng
- School of Chemistry
and Chemical Engineering, Guangdong Pharmaceutical
University, Zhongshan 528458, P. R. China
| | - Juewen Liu
- Department
of Chemistry and Waterloo Institute for Nanotechnology, University of Waterloo, 200 University Avenue West, Waterloo N2L 3G1, Ontario, Canada
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146
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Ma L, Liu J. An in Vitro-Selected DNAzyme Mutant Highly Specific for Na + under Slightly Acidic Conditions. Chembiochem 2018; 20:537-542. [PMID: 29989277 DOI: 10.1002/cbic.201800322] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2018] [Indexed: 12/19/2022]
Abstract
Sodium is one of the most common metal ions in biology; however, DNA-based sodium probes have only been reported recently. A Na+ -specific RNA-cleaving DNAzyme named NaA43 is active with Na+ alone. In this work, we were using Co(NH3 )6 3+ as the intended metal cofactor for in vitro selection, but obtained a mutant of the NaA43 DNAzyme. The mutant was named NaH1, and differs from NaA43 by only two nucleotides. NaA43 has an optimal pH of 7.0, whereas the optimal pH for NaH1 is 6.0. This difference might be due to our selection having been performed at pH 6.0. NaH1 also displays an excellent selectivity for sodium relative to other competing monovalent ions, as well as a fast catalytic rate of (0.11±0.01) min-1 with 50 mm Na+ . At low Na+ concentrations, the selected DNAzyme exhibited a higher cleavage rate than NaA43 and thus a tighter apparent Kd of (12.0±1.6) mm Na+ . Furthermore, the NaH1 DNAzyme was engineered into a fluorescent Na+ biosensor by attaching a fluorophore/quencher pair to the DNAzyme with a detection limit of 223 μm Na+ . Preliminary work on detection of Na+ in serum was demonstrated as well. This study provides a useful mutant that works in a slightly acidic environment, which might be useful for sensing Na+ in acidic in vivo environments.
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Affiliation(s)
- Lingzi Ma
- Department of Chemistry, Waterloo Institute for Nanotechnology, University of Waterloo, Waterloo, ON, N2L 3G1, Canada
| | - Juewen Liu
- Department of Chemistry, Waterloo Institute for Nanotechnology, University of Waterloo, Waterloo, ON, N2L 3G1, Canada
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147
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Tang W, Cheng M, Dai D, Xiong Z, Liu F. Rational design of sequestered DNAzyme beacons to enable flexible control of catalytic activities. RSC Adv 2018; 8:29338-29343. [PMID: 35548005 PMCID: PMC9084462 DOI: 10.1039/c8ra05757e] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2018] [Accepted: 08/08/2018] [Indexed: 01/18/2023] Open
Abstract
DNAzymes as functional units play increasingly important roles for DNA nanotechnology, and fine control of the catalytic activities of DNAzymes is a crucial element in the design and construction of functional and dynamic devices. So far, attempts to control cleavage kinetics can be mainly achieved through varying the concentrations of the specific metal ions. Here we present a facile sequestered DNAzyme beacon strategy based on precisely blocking the catalytic core of the DNAzyme, which can flexibly regulate the DNAzyme cleavage kinetics without changing the concentrations of metal ions. This strategy can be extended to couple with a large number of other RNA-cleaving DNAzymes and was successfully applied in designing a dual stem-loop structure probe for arbitrary sequence biosensing, which provides the possibility of scaling up versatile and dynamic DNA devices that use DNAzymes as functional modules.
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Affiliation(s)
- Wei Tang
- Institute of Materials, China Academy of Engineering Physics Mianyang 621700 China
| | - Mengxi Cheng
- Institute of Materials, China Academy of Engineering Physics Mianyang 621700 China
| | - Danling Dai
- Institute of Materials, China Academy of Engineering Physics Mianyang 621700 China
| | - Zhonghua Xiong
- Institute of Materials, China Academy of Engineering Physics Mianyang 621700 China
| | - Feng Liu
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry and Molecular Engineering, Peking University Beijing 100871 China
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148
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Zhang H, Li X, He F, Zhao M, Ling L. Turn-off colorimetric sensor for sequence-specific recognition of single-stranded DNA based upon Y-shaped DNA structure. Sci Rep 2018; 8:12021. [PMID: 30104740 PMCID: PMC6089895 DOI: 10.1038/s41598-018-30529-z] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2018] [Accepted: 07/31/2018] [Indexed: 12/19/2022] Open
Abstract
A novel turn-off colorimetric sensor for sequence-specific recognition of single-stranded DNA (ssDNA) was established by combining Y-shaped DNA duplex and G-quadruplex-hemin DNAzyme. A G-rich single-stranded DNA (Oligo-1) displays peroxidase mimicking catalytic activity due to the specific binding with hemin in the presence of K+, which was able to catalyze the oxidation of colorless 2,2'-azinobis(3-ethylbenzothiazoline)-6-sulfonic acid (ABTS2-) by H2O2 to generate green ABTS•- radical for colorimetric assay. Oligonucleotide 2 (Oligo-2) was partly complementary with Oligo-1 and the target DNA. Upon addition of target DNA, Oligo-1, Oligo-2 and target DNA can hybridize with each other to form Y-shaped DNA duplex. The DNAzyme sequence of Oligo-1 was partly caged into Y-shaped DNA duplex, resulting in the inactivation of the DNAzyme and a sharp decrease of the absorbance of the oxidation product of ABTS2-. Under the optimum condition, the absorbance decreased linearly with the concentration of target DNA over the range of 1.0-250 nM and the detection limit was 0.95 nM (3σ/slope) Moreover, satisfied result was obtained for the discrimination of single-base or two-base mismatched DNA.
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Affiliation(s)
- Hong Zhang
- College of Tobacco Science, Henan Agricultural University, Zhengzhou, 450002, P. R. China
| | - Xintong Li
- College of Tobacco Science, Henan Agricultural University, Zhengzhou, 450002, P. R. China
| | - Fan He
- College of Tobacco Science, Henan Agricultural University, Zhengzhou, 450002, P. R. China
| | - Mingqin Zhao
- College of Tobacco Science, Henan Agricultural University, Zhengzhou, 450002, P. R. China.
| | - Liansheng Ling
- School of Chemistry, Sun Yat-Sen University, Guangzhou, 510275, P. R. China.
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149
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Colorimetric determination of uranyl (UO22+) in seawater via DNAzyme-modulated photosensitization. Talanta 2018; 185:258-263. [DOI: 10.1016/j.talanta.2018.03.079] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2017] [Revised: 03/17/2018] [Accepted: 03/24/2018] [Indexed: 12/16/2022]
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150
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Yang X, Shi D, Zhu S, Wang B, Zhang X, Wang G. Portable Aptasensor of Aflatoxin B1 in Bread Based on a Personal Glucose Meter and DNA Walking Machine. ACS Sens 2018; 3:1368-1375. [PMID: 29943575 DOI: 10.1021/acssensors.8b00304] [Citation(s) in RCA: 65] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Despite some recent developments on the portable on-site sensor of Aflatoxin B1 (AFB1), the complex and expensive preparation of recognition elements have still limited their wide applications. In this paper, using the fast, low-cost, and stable recognition of aptamer DNA-AFB1, a portable aptasensor was constructed for the on-site detection of AFB1 in food matrixes, with the readout of personal glucose meter (PGM) and DNA walking machine for signal probe separation. In such an assay protocol, the target could trigger the DNA walker to autonomously move on the electrode surface, propelled by unidirectional Pb2+-specific DNAzyme digestion, which could amplify the signal and separate the signal probe as well for further quantification by the PGM. Under optimized conditions, the increase of PGM signal was relative with the concentration of AFB1 ranging from 0.02 to 10 nM and the low limit of detection (LOD) was 10 pM (S/N = 3). With the features of portability, and cheapness, the presented user-friendly method could be extended to various other analytes for wide point-of-care applications.
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Affiliation(s)
- Xinsheng Yang
- Key Laboratory of Chem-Biosensing, Anhui Province; Key Laboratory of Functional Molecular Solids, Anhui Province; College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241000, P. R. China
| | - Dongmin Shi
- Key Laboratory of Chem-Biosensing, Anhui Province; Key Laboratory of Functional Molecular Solids, Anhui Province; College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241000, P. R. China
| | - Shengmei Zhu
- Key Laboratory of Chem-Biosensing, Anhui Province; Key Laboratory of Functional Molecular Solids, Anhui Province; College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241000, P. R. China
| | - Baojuan Wang
- Institute of Molecular Biology and Biotechnology and Anhui Provincial Key Laboratory of the Conservation and Exploitation of Biological Resources, College of Life Sciences, Anhui Normal University, Wuhu 241000, P. R. China
| | - Xiaojun Zhang
- Key Laboratory of Chem-Biosensing, Anhui Province; Key Laboratory of Functional Molecular Solids, Anhui Province; College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241000, P. R. China
| | - Guangfeng Wang
- Key Laboratory of Chem-Biosensing, Anhui Province; Key Laboratory of Functional Molecular Solids, Anhui Province; College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241000, P. R. China
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