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Zhang L, Wu H, Chen Y, Zhang S, Song M, Liu C, Li J, Cheng W, Ding S. Target response controlled enzyme activity switch for multimodal biosensing detection. J Nanobiotechnology 2023; 21:122. [PMID: 37031177 PMCID: PMC10082497 DOI: 10.1186/s12951-023-01860-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2022] [Accepted: 03/16/2023] [Indexed: 04/10/2023] Open
Abstract
How to achieve delicate regulation of enzyme activity and empower it with more roles is the peak in the field of enzyme catalysis research. Traditional proteases or novel nano-enzymes are unable to achieve stimulus-responsive activity modulation due to their own structural limitations. Here, we propose a novel Controllable Enzyme Activity Switch, CEAS, based on hemin aggregation regulation, to deeply explore its regulatory mechanism and develop multimodal biosensing applications. The core of CEAS relies on the dimerizable inactivation of catalytically active center hemin and utilizes a DNA template to orderly guide the G4-Hemin DNAzyme to tightly bind to DNA-Hemin, thereby shutting down the catalytic ability. By customizing the design of the guide template, different target stimulus responses lead to hemin dimerization dissociation and restore the synergistic catalysis of G4-Hemin and DNA-Hemin, thus achieving a target-regulated enzymatic activity switch. Moreover, the programmability of CEAS allowed it easy to couple with a variety of DNA recognition and amplification techniques, thus developing a series of visual protein detection systems and highly sensitive fluorescent detection systems with excellent bioanalytical performance. Therefore, the construction of CEAS is expected to break the limitation of conventional enzymes that cannot be targetable regulated, thus enabling customizable enzymatic reaction systems and providing a new paradigm for controllable enzyme activities.
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Affiliation(s)
- Lu Zhang
- Key Laboratory of Clinical Laboratory Diagnostics (Ministry of Education), College of Laboratory Medicine, Chongqing Medical University, Chongqing, 400016, People's Republic of China
| | - Haiping Wu
- Key Laboratory of Clinical Laboratory Diagnostics (Ministry of Education), College of Laboratory Medicine, Chongqing Medical University, Chongqing, 400016, People's Republic of China
| | - Yirong Chen
- Key Laboratory of Clinical Laboratory Diagnostics (Ministry of Education), College of Laboratory Medicine, Chongqing Medical University, Chongqing, 400016, People's Republic of China
| | - Songzhi Zhang
- Key Laboratory of Clinical Laboratory Diagnostics (Ministry of Education), College of Laboratory Medicine, Chongqing Medical University, Chongqing, 400016, People's Republic of China
| | - Mingxuan Song
- Key Laboratory of Clinical Laboratory Diagnostics (Ministry of Education), College of Laboratory Medicine, Chongqing Medical University, Chongqing, 400016, People's Republic of China
| | - Changjin Liu
- Department of Laboratory Medicine, The Fifth People's Hospital of Chongqing, Chongqing, 400062, China
| | - Jia Li
- The Center for Clinical Molecular Medical Detection, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, People's Republic of China.
| | - Wei Cheng
- The Center for Clinical Molecular Medical Detection, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, People's Republic of China.
| | - Shijia Ding
- Key Laboratory of Clinical Laboratory Diagnostics (Ministry of Education), College of Laboratory Medicine, Chongqing Medical University, Chongqing, 400016, People's Republic of China.
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2
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Mao X, Qiu D, Wei S, Zhang X, Lei J, Mergny JL, Ju H, Zhou J. A Double Hemin Bonded G-Quadruplex Embedded in Metal-Organic Frameworks for Biomimetic Cascade Reaction. ACS APPLIED MATERIALS & INTERFACES 2022; 14:54598-54606. [PMID: 36459081 DOI: 10.1021/acsami.2c18473] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Biocatalytic transformations in living cells, such as enzymatic cascades, function effectively in spatially confined microenvironments. However, mimicking enzyme catalytic cascade processes is challenging. Herein, we report a new dual-Hemin-G-quadruplex (dHemin-G4) DNAzyme with high catalytic activity over noncovalent G4/Hemin and monocovalent counterparts (G4-Hemin and Hemin-G4) by covalently linking hemin to both ends of an intramolecular G4. We use MAF-7, a hydrophilic metal-organic framework (MOF), as the protecting scaffold to integrate a biocatalytic cascade consisting of dHemin-G4 DNAzyme and glucose oxidase (GOx), by a simple and mild method with a single-step encapsulation of both enzymes. Such a MAF-7-confined cascade system shows superior activity over not only traditional G4/Hemin but also other MOFs (ZIF-8 and ZIF-90), which was mainly attributed to high-payload enzyme packaging. Notably, the introduction of hydrophilic G4 allows to avoid the accumulation of hydrophobic hemin on the surface of MAF-7, which decreases cascade biocatalytic activity. Furthermore, MAF-7 as protective coatings endowed the enzyme with excellent recyclability and good operational stability in harsh environments, including elevated temperature, urea, protease, and organic solvents, extending its practical application in biocatalysis. In addition, the incorporated enzymes can be replaced on demand to broaden the scope of catalytic substrates. Taking advantages of these features, the feasibility of dHemin-G4/GOx@MAF-7 systems for biosensing was demonstrated. This study is conducive to devise efficient and stable enzyme catalytic cascades to facilitate applications in biosensing and industrial processes.
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Affiliation(s)
- Xuanxiang Mao
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, P.R. China
| | - Dehui Qiu
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, P.R. China
| | - Shijiong Wei
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, P.R. China
| | - Xiaobo Zhang
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, P.R. China
| | - Jianping Lei
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, P.R. China
| | - Jean-Louis Mergny
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, P.R. China
- Laboratoire d'Optique et Biosciences, Ecole Polytechnique, CNRS, INSERM, Institut Polytechnique de Paris, 91128 Palaiseau cedex, France
| | - Huangxian Ju
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, P.R. China
| | - Jun Zhou
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, P.R. China
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3
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Li J, Wu H, Yan Y, Yuan T, Shu Y, Gao X, Zhang L, Li S, Ding S, Cheng W. Zippered G-quadruplex/hemin DNAzyme: exceptional catalyst for universal bioanalytical applications. Nucleic Acids Res 2021; 49:13031-13044. [PMID: 34878146 PMCID: PMC8682752 DOI: 10.1093/nar/gkab1178] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2021] [Revised: 11/09/2021] [Accepted: 11/17/2021] [Indexed: 12/04/2022] Open
Abstract
G-quadruplex (G4)/hemin DNAzyme is promising horseradish peroxidase (HRP)-mimic candidate in the biological field. However, its relatively unsatisfactory catalytic capacity limits the potential applications. Inspired by nature protease, we conducted a proximity-enhanced cofactor assembly strategy (PECA) to form an exceptional HRP mimic, namely zippered G4/hemin DNAzyme (Z-G4/H). The hybridization of short oligonucleotides induced proximity assembly of the DNA-grafted hemin (DGH) with the complementary G4 sequences (cG4s), mimicking the tight configuration of protease cofactor and apoenzyme. The detailed investigations of catalytic efficiency and mechanism verified the higher activity, more rapid catalytic rate and high environmental tolerance of the Z-G4/H than the classical G4/hemin DNAzymes (C-G4/H). Furthermore, a proximity recognition transducer has been developed based on the PECA for sensitive detection of gene rearrangement and imaging human epidermal growth factor receptor 2 protein (HER2) dimerization on cell surfaces. Our studies demonstrate the high efficiency of Z-G4/H and its universal application potential in clinical diagnostics and biomolecule interaction research. It also may offer significant opportunities and inspiration for the engineering of the protease-free mimic enzyme.
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Affiliation(s)
- Jia Li
- The Center for Clinical Molecular Medical detection, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, P.R. China.,Key Laboratory of Clinical Laboratory Diagnostics (Ministry of Education), College of Laboratory Medicine, Chongqing Medical University, Chongqing 400016, P.R. China
| | - Haiping Wu
- Key Laboratory of Clinical Laboratory Diagnostics (Ministry of Education), College of Laboratory Medicine, Chongqing Medical University, Chongqing 400016, P.R. China
| | - Yurong Yan
- Key Laboratory of Clinical Laboratory Diagnostics (Ministry of Education), College of Laboratory Medicine, Chongqing Medical University, Chongqing 400016, P.R. China
| | - Taixian Yuan
- Key Laboratory of Clinical Laboratory Diagnostics (Ministry of Education), College of Laboratory Medicine, Chongqing Medical University, Chongqing 400016, P.R. China
| | - Yue Shu
- The Center for Clinical Molecular Medical detection, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, P.R. China
| | - Xin Gao
- Key Laboratory of Clinical Laboratory Diagnostics (Ministry of Education), College of Laboratory Medicine, Chongqing Medical University, Chongqing 400016, P.R. China
| | - Lu Zhang
- Key Laboratory of Clinical Laboratory Diagnostics (Ministry of Education), College of Laboratory Medicine, Chongqing Medical University, Chongqing 400016, P.R. China
| | - Siqiao Li
- Key Laboratory of Clinical Laboratory Diagnostics (Ministry of Education), College of Laboratory Medicine, Chongqing Medical University, Chongqing 400016, P.R. China
| | - Shijia Ding
- Key Laboratory of Clinical Laboratory Diagnostics (Ministry of Education), College of Laboratory Medicine, Chongqing Medical University, Chongqing 400016, P.R. China
| | - Wei Cheng
- The Center for Clinical Molecular Medical detection, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, P.R. China
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Highly sensitive fluorescence biosensing of BCR-ABL1 fusion gene based on exponential transcription-triggered hemin catalysis. Talanta 2021; 224:121967. [PMID: 33379130 DOI: 10.1016/j.talanta.2020.121967] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2020] [Revised: 11/15/2020] [Accepted: 11/30/2020] [Indexed: 11/21/2022]
Abstract
Simple, sensitive and specific detection of the transcription level of BCR-ABL1 mRNA possesses vital clinical significance in diagnosis and treatment of chronic myeloid leukemia (CML). In this study, an innovative fluorescence biosensing methodology has been developed for sensitive and specific detection of BCR-ABL1 mRNA by integrating high-efficiency of exponential transcription and superior catalytic performance of DNA-grafted hemin. Exponential transcription was triggered by BCR-ABL1 mRNA to produce plenty of RNA products. They can specifically hybridize with circular dual-labeled hemin (DLH) probe to dissociate the intramolecular hemin dimmers into highly active hemin monomers for catalyzing fluorescence substrate tyramine. This exponential transcription-triggered hemin catalysis (ET-HC) strategy showed highly sensitive and specific for BCR-ABL1 detection with a limit of detection at 0.5 aM and a good linear range from 2 aM to 200 fM. This method was successfully applied to directly detect as low as 0.001% e13a2 transcript isoforms from complex genomic RNA extraction. Compared with clinical routine, the overall process is a thermostatic reaction and eliminates additional reverse transcription operation. Therefore, the developed ET-HC strategy might provide a promising alternative tool for precise diagnosis and personalized treatment of CML.
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Li J, Zhu M, Wang M, Qi W, Su R, He Z. Molecularly imprinted peptide-based enzyme mimics with enhanced activity and specificity. SOFT MATTER 2020; 16:7033-7039. [PMID: 32667008 DOI: 10.1039/d0sm00635a] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
We herein report the construction of peroxidase (POD)-mimicking catalysts based on the strategy of peptide assembly and molecular imprinting. Upon co-assembly of Fmoc-FFH and Hemin, we firstly fabricated CA-H/Hemin which displayed POD-like catalytic activity and showed a 21-fold rate acceleration in the oxidation of 2,2'-azinobis-(3-ethylbenzthiazoline-6-sulphonate) (ABTS) compared to the uncatalyzed reaction. Then, upon combining CA-H/Hemin with the ABTS-imprinted polymer, the obtained imprinted catalyst (MIP-H/Hemin) showed 52-fold acceleration due to the enhanced re-binding toward ABTS. Moreover, by introducing cationic monomers, a 137-fold rate enhancement was further achieved for the positively charged imprinted catalyst (MIP+-H/Hemin), from the synergistic effect of molecular imprinting and electrostatic attraction. Remarkably, by comparing the catalytic activity of these POD mimics towards ABTS and 3,3',5,5'-tetramethylbenzidine (TMB), we also highlighted the substrate specificity of MIP-H/Hemin and MIP+-H/Hemin toward ABTS. This study provides a promising approach to improve the catalytic activity and specificity of peptide-based enzyme mimics.
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Affiliation(s)
- Jingyi Li
- School of Chemical Engineering and Technology, State Key Laboratory of Chemical Engineering, Tianjin University, Tianjin 300350, P. R. China.
| | - Mingjie Zhu
- School of Chemical Engineering and Technology, State Key Laboratory of Chemical Engineering, Tianjin University, Tianjin 300350, P. R. China.
| | - Mengfan Wang
- School of Chemical Engineering and Technology, State Key Laboratory of Chemical Engineering, Tianjin University, Tianjin 300350, P. R. China. and Tianjin Key Laboratory of Membrane Science and Desalination Technology, Tianjin 300350, P. R. China
| | - Wei Qi
- School of Chemical Engineering and Technology, State Key Laboratory of Chemical Engineering, Tianjin University, Tianjin 300350, P. R. China. and Tianjin Key Laboratory of Membrane Science and Desalination Technology, Tianjin 300350, P. R. China and The Co-Innovation Centre of Chemistry and Chemical Engineering of Tianjin, Tianjin, 300350, P. R. China
| | - Rongxin Su
- School of Chemical Engineering and Technology, State Key Laboratory of Chemical Engineering, Tianjin University, Tianjin 300350, P. R. China. and Tianjin Key Laboratory of Membrane Science and Desalination Technology, Tianjin 300350, P. R. China and The Co-Innovation Centre of Chemistry and Chemical Engineering of Tianjin, Tianjin, 300350, P. R. China
| | - Zhimin He
- School of Chemical Engineering and Technology, State Key Laboratory of Chemical Engineering, Tianjin University, Tianjin 300350, P. R. China.
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6
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Wang LC, Hong CY, Lin ZZ, Chen XM, Huang ZY. Aptamer-based fluorometric determination of chloramphenicol by controlling the activity of hemin as a peroxidase mimetic. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2020; 12:2391-2397. [PMID: 32930265 DOI: 10.1039/d0ay00389a] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
A method for the aptamer-based determination of chloramphenicol (CAP) was developed by exploiting the peroxidase mimicking activity of hemin. The method includes two hemin-modified DNA probes termed P1 and P2. P1, which was modified at its 5' end with one hemin monomer, contains the CAP-binding sequence. The hybridization between P1 and P2 brings the two hemin monomers in close proximity, resulting in the formation of a hemin dimer with low peroxidase mimicking activity. The duplex structure was dehybridized in the presence of CAP. The formed hemin monomer featured a strong peroxidase mimicking activity and catalyzed the conversion of non-fluorescent tyramine into fluorescent dityramine by hydrogen peroxide. Fluorescence (with an excitation/emission maxima at 320 and 410 nm, respectively) increased linearly in the 0.1 ng mL-1 to 10 ng mL-1 CAP concentration range. The detection limit based on the 3σ/k criterion reached 0.07 ng mL-1. The proposed assay was successfully employed for CAP detection in (spiked) honey samples with recoveries of 94.3-117.2%. Given its high sensitivity and good stability, this method shows potential in providing a platform for antibiotic detection.
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Affiliation(s)
- Ling-Chen Wang
- College of Food and Biological Engineering, Jimei University, Xiamen, 361021, China.
| | - Cheng-Yi Hong
- College of Food and Biological Engineering, Jimei University, Xiamen, 361021, China.
| | - Zheng-Zhong Lin
- College of Food and Biological Engineering, Jimei University, Xiamen, 361021, China.
- Fujian Provincial Key Laboratory of Food Microbiology and Enzyme Engineering, Xiamen, Fujian Province 361021, China
| | - Xiao-Mei Chen
- College of Food and Biological Engineering, Jimei University, Xiamen, 361021, China.
| | - Zhi-Yong Huang
- College of Food and Biological Engineering, Jimei University, Xiamen, 361021, China.
- Fujian Provincial Key Laboratory of Food Microbiology and Enzyme Engineering, Xiamen, Fujian Province 361021, China
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7
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Dual-triggered oxygen self-supply black phosphorus nanosystem for enhanced photodynamic therapy. Biomaterials 2018; 172:83-91. [PMID: 29723757 DOI: 10.1016/j.biomaterials.2018.04.051] [Citation(s) in RCA: 58] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2018] [Revised: 04/24/2018] [Accepted: 04/25/2018] [Indexed: 12/26/2022]
Abstract
Nonspecific distribution of photosensitizer and the intrinsic hypoxic condition in the tumor microenvironment are two key factors limiting the efficacy of O2-dependent photodynamic therapy (PDT). Herein, a dual-triggered oxygen self-supported nanosystem using black phosphorus nanosheet (BPNS) as both photosensitizer and nanocarrier was developed to enhance PDT for tumors within hypoxic microenvironment. The BPNS platform was functionalized with folate and a blocker DNA duplex of 5'-Cy5-aptamer-heme/3'-heme labeled oligonucleotides. The resulting heme dimer could passivate its peroxidase activity. After specific recognition of aptamer-target, the quenched fluorescence is "turned" on by cellular adenosine triphosphate. The passivated nanosystem then activates the catalytic function towards excessive intracellular H2O2 to generate O2 essential to sustain BPNS-mediated PDT, leading to 8.7-fold and 7.5-fold increase of PDT efficacy in treating the hypoxic cell and tumor, respectively. Therefore, the dual-triggered oxygen self-supply nanosystem not only exerts tumor microenvironment-associated stimulus for enhanced PDT but also surmounts hypoxia-associated therapy resistance.
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8
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Meng R, Liu Q, Jin Y, Li B. Dual-Hemin-Labelled Catalytic Molecular Beacon: A Monomer-Dimer Switching Probe for Sensitive Chemiluminescence Detection of Biomolecules. ChemistrySelect 2018. [DOI: 10.1002/slct.201702963] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Rong Meng
- School of Chemistry & Chemical Engineering, Key Laboratory of Analytical Chemistry for Life Science of Shaanxi Province; Shaanxi Normal University; Xi'an 710062 China
| | - Qiang Liu
- School of Chemistry & Chemical Engineering, Key Laboratory of Analytical Chemistry for Life Science of Shaanxi Province; Shaanxi Normal University; Xi'an 710062 China
| | - Yan Jin
- School of Chemistry & Chemical Engineering, Key Laboratory of Analytical Chemistry for Life Science of Shaanxi Province; Shaanxi Normal University; Xi'an 710062 China
| | - Baoxin Li
- School of Chemistry & Chemical Engineering, Key Laboratory of Analytical Chemistry for Life Science of Shaanxi Province; Shaanxi Normal University; Xi'an 710062 China
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Zhang L, Ma F, Lei J, Liu J, Ju H. Target-triggered cascade assembly of a catalytic network as an artificial enzyme for highly efficient sensing. Chem Sci 2017; 8:4833-4839. [PMID: 28959405 PMCID: PMC5602372 DOI: 10.1039/c7sc01453h] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2017] [Accepted: 04/25/2017] [Indexed: 11/21/2022] Open
Abstract
Determining the catalytic activity of artificial enzymes is an ongoing challenge. In this work, we design a porphyrin-based enzymatic network through the target-triggered cascade assembly of catalytic nanoparticles. The nanoparticles are synthesized via the covalent binding of hemin to amino-coated gold nanoparticles and then the axial coordination of the Fe center with a dual-functional imidazole or pyridine derivative. The network, which is specifically formed by coordination polymerization triggered by Hg2+ as the target, shows high catalytic activity due to the triple amplification of enzymatic activity during the cascade assembly. The catalytic dynamics are comparable to those of natural horseradish peroxidase. The catalytic characteristics can be ultrasensitively regulated by the target, leading to a selective methodology for the analysis of sub-attomolar Hg2+. It has also been used for "signal-on" imaging of reactive oxygen species in living cells. This work provides a new avenue for the design of enzyme mimics, and a powerful biocatalyst with signal switching for the development of biosensing protocols.
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Affiliation(s)
- Lei Zhang
- State Key Laboratory of Analytical Chemistry for Life Science , School of Chemistry and Chemical Engineering , Nanjing University , Nanjing 210023 , P. R. China . ; ; Tel: +86 25 89681922
| | - Fengjiao Ma
- State Key Laboratory of Analytical Chemistry for Life Science , School of Chemistry and Chemical Engineering , Nanjing University , Nanjing 210023 , P. R. China . ; ; Tel: +86 25 89681922
| | - Jianping Lei
- State Key Laboratory of Analytical Chemistry for Life Science , School of Chemistry and Chemical Engineering , Nanjing University , Nanjing 210023 , P. R. China . ; ; Tel: +86 25 89681922
| | - Jintong Liu
- State Key Laboratory of Analytical Chemistry for Life Science , School of Chemistry and Chemical Engineering , Nanjing University , Nanjing 210023 , P. R. China . ; ; Tel: +86 25 89681922
| | - Huangxian Ju
- State Key Laboratory of Analytical Chemistry for Life Science , School of Chemistry and Chemical Engineering , Nanjing University , Nanjing 210023 , P. R. China . ; ; Tel: +86 25 89681922
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10
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Wang X, Liu W, Yin B, Sang Y, Liu Z, Dai Y, Duan X, Zhang G, Ding S, Tao Z. An isothermal strand displacement amplification strategy for nucleic acids using junction forming probes and colorimetric detection. Mikrochim Acta 2017. [DOI: 10.1007/s00604-017-2158-7] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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11
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Gui Z, Wang Q, Li J, Zhu M, Yu L, Xun T, Yan F, Ju H. Direct detection of circulating free DNA extracted from serum samples of breast cancer using locked nucleic acid molecular beacon. Talanta 2016; 154:520-5. [PMID: 27154709 DOI: 10.1016/j.talanta.2016.04.008] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2015] [Revised: 03/25/2016] [Accepted: 04/03/2016] [Indexed: 12/24/2022]
Abstract
As an emerging noninvasive blood biomarker, circulating free DNA (cfDNA) can be utilized to assess diagnosis, progression and evaluate prognosis of cancer. However, cfDNAs are not "naked", they can be part of complexes, or are bound to the surface of the cells via proteins, which make the detection more challenging. Here, a simple method for the detection of Ubiquitin-like with PHD and ring finger domains 1 (UHRF1) DNA exacted from serum of breast cancer (BC) has been developed using a novel locked nucleic acid molecular beacon (LNA-MB). In order to enhance the stability and detection efficiency of the probe in biofluids, we design a shared-stem molecular beacon containing a 27-mer loop and a 4-mer stem with DNA/LNA alternating bases. The fluorescence is released in the presence of target. The detection procedure is simple and can be completed within 1h. This method shows a sensitive response to UHRF1 DNA with a dynamic range of 3 orders of magnitude. The limit of detection is 11nM (S/N=3) with excellent selectivity. It can discriminate UHRF1 DNA from three-base mismatched DNA with a high specificity. More importantly, this method can distinguish the expression of serum UHRF1 DNA among 5 breast cancer patients and 5 healthy controls. The mentioned superiority may suggest that this assay can be served as a promising noninvasive detection tool for early BC diagnosis and monitoring.
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Affiliation(s)
- Zhen Gui
- Jiangsu Key Laboratory of Molecular and Translational Cancer Research, Nanjing Medical University Cancer Hospital & Jiangsu Cancer Hospital, Nanjing 210009, PR China
| | - Quanbo Wang
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, Jiangsu 210023, PR China
| | - Jinchang Li
- Jiangsu Key Laboratory of Molecular and Translational Cancer Research, Nanjing Medical University Cancer Hospital & Jiangsu Cancer Hospital, Nanjing 210009, PR China
| | - Mingchen Zhu
- Jiangsu Key Laboratory of Molecular and Translational Cancer Research, Nanjing Medical University Cancer Hospital & Jiangsu Cancer Hospital, Nanjing 210009, PR China
| | - Lili Yu
- Jiangsu Key Laboratory of Molecular and Translational Cancer Research, Nanjing Medical University Cancer Hospital & Jiangsu Cancer Hospital, Nanjing 210009, PR China
| | - Tang Xun
- Jiangsu Key Laboratory of Molecular and Translational Cancer Research, Nanjing Medical University Cancer Hospital & Jiangsu Cancer Hospital, Nanjing 210009, PR China
| | - Feng Yan
- Jiangsu Key Laboratory of Molecular and Translational Cancer Research, Nanjing Medical University Cancer Hospital & Jiangsu Cancer Hospital, Nanjing 210009, PR China.
| | - Huangxian Ju
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, Jiangsu 210023, PR China.
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12
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Zhuang Y, Huang F, Xu Q, Zhang M, Lou X, Xia F. Facile, Fast-Responsive, and Photostable Imaging of Telomerase Activity in Living Cells with a Fluorescence Turn-On Manner. Anal Chem 2016; 88:3289-94. [DOI: 10.1021/acs.analchem.5b04756] [Citation(s) in RCA: 79] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Yuan Zhuang
- Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, P. R. China
| | - Fujian Huang
- Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, P. R. China
| | - Qi Xu
- Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, P. R. China
| | - Mengshi Zhang
- Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, P. R. China
| | - Xiaoding Lou
- Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, P. R. China
| | - Fan Xia
- Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, P. R. China
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13
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Liu B, Huang PJJ, Kelly EY, Liu J. Graphene oxide surface blocking agents can increase the DNA biosensor sensitivity. Biotechnol J 2016; 11:780-7. [PMID: 26773450 DOI: 10.1002/biot.201500540] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2015] [Revised: 11/13/2015] [Accepted: 01/14/2016] [Indexed: 12/14/2022]
Abstract
Graphene oxide adsorbs single-strand fluorescent probe DNA, and the adsorbed probe can be desorbed by adding the complementary target DNA. Using this method, many biosensor studies have been carried out. We recently proposed a two-step mechanism for this sensing reaction: non-specific probe displacement followed by hybridization in the solution. Only about one out of six added target DNA is hybridized with the adsorbed probe to generate signal, leading to relatively low sensitivity. In this work, we aim to test whether surface blocking agents can minimize non-specific target adsorption and increase hybridization efficiency. Over ten blocking agents (polymers, surfactants, and DNA) were screened based on their effect on probe DNA adsorption and target DNA induced probe desorption. DNA oligonucleotides show significant and controllable enhancement in sensor sensitivity. The effect of DNA length and sequence was systematically investigated. Under optimized conditions, the sensor sensitivity was enhanced by nearly 10-fold. Using the same blocking method, sensitivity enhancement of other targets was also achieved, including adenosine and Hg(2+) with DNA aptamer probes. This reported surface blocking strategy can generally improve graphene oxide and potentially other surface adsorption based biosensors for metal ions, small molecules, and DNA.
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Affiliation(s)
- Biwu Liu
- Department of Chemistry, Waterloo Institute for Nanotechnology, University of Waterloo, Waterloo, Ontario, Canada
| | - Po-Jung Jimmy Huang
- Department of Chemistry, Waterloo Institute for Nanotechnology, University of Waterloo, Waterloo, Ontario, Canada
| | - Erin Y Kelly
- Department of Chemistry, Waterloo Institute for Nanotechnology, University of Waterloo, Waterloo, Ontario, Canada
| | - Juewen Liu
- Department of Chemistry, Waterloo Institute for Nanotechnology, University of Waterloo, Waterloo, Ontario, Canada.
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14
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Wang Z, Zhao J, Bao J, Dai Z. Construction of Metal-Ion-Free G-quadruplex-Hemin DNAzyme and Its Application in S1 Nuclease Detection. ACS APPLIED MATERIALS & INTERFACES 2016; 8:827-833. [PMID: 26666985 DOI: 10.1021/acsami.5b10165] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
In this work, a new kind of peroxidase-mimicking DNAzyme (G-quadruplex-hemin DNAzyme, G4-hemin) was constructed by using hemin-modified G-rich DNA (hemin-G-DNA). Experimental results demonstrated that the G-rich DNA can form a G-quadruplex structure by the inducement of terminally modified hemin, rendering the assembly of hemin and G-quadruplex structure spontaneously and efficiently. As a result, G-hemin revealed higher peroxidase activity than traditional G-quadruplex/hemin DNAzyme (G4/hemin). Besides, different from G4/hemin, G4-hemin was constructed in one step without the participation of metal ions and adscititious hemin. Accordingly, the construction procedure was significantly simplified and the background signal from dissociative hemin was remarkably reduced. In a proof-of-concept trial, according to the colorimetric signals of G4-hemin, a novel biosensor for the detection of S1 nuclease activity was established, which provides a novel perspective for designing peroxidase-mimicking DNAzyme-based biosensors.
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Affiliation(s)
- Zhaoyin Wang
- Jiangsu Key Laboratory of Biofunctional Materials, College of Chemistry and Materials Science, Nanjing Normal University , Nanjing 210023, P. R. China
| | - Jian Zhao
- Jiangsu Key Laboratory of Biofunctional Materials, College of Chemistry and Materials Science, Nanjing Normal University , Nanjing 210023, P. R. China
| | - Jianchun Bao
- Jiangsu Key Laboratory of Biofunctional Materials, College of Chemistry and Materials Science, Nanjing Normal University , Nanjing 210023, P. R. China
| | - Zhihui Dai
- Jiangsu Key Laboratory of Biofunctional Materials, College of Chemistry and Materials Science, Nanjing Normal University , Nanjing 210023, P. R. China
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15
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Xu N, Lei J, Wang Q, Yang Q, Ju H. Dendritic DNA-porphyrin as mimetic enzyme for amplified fluorescent detection of DNA. Talanta 2016; 150:661-5. [PMID: 26838456 DOI: 10.1016/j.talanta.2016.01.005] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2015] [Revised: 12/24/2015] [Accepted: 01/03/2016] [Indexed: 12/21/2022]
Abstract
In this work, a novel dendritic DNA-porphyrin superstructure was designed as mimetic enzyme for the amplified fluorescent detection of DNA. The dendritic DNA superstructure was in situ assembled with three auxiliary DNAs via hybridization chain reaction. With groove interaction between iron porphyrin (FeTMPyP) and double-stranded DNA, the dendritic DNA superstructure is capable to gather abundant FeTMPyP molecules to form dendritic DNA-FeTMPyP mimetic enzyme. Using tyramine as a substrate, the dendritic DNA-FeTMPyP demonstrated excellent peroxidase-like catalytic oxidation of tyramine into fluorescent dityramine in the presence of H2O2. Based on an amplified fluorescence signal, a signal on strategy is proposed for DNA detection with high sensitivity, good specificity and practicability. The assembly of porphyrin with dendritic DNA not only provided the new avenue to construct mimetic enzyme but also established label-free sensing platform for a wide range of analytes.
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Affiliation(s)
- Nan Xu
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, PR China
| | - Jianping Lei
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, PR China.
| | - Quanbo Wang
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, PR China
| | - Qianhui Yang
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, PR China
| | - Huangxian Ju
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, PR China
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16
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Wang Q, Xu N, Gui Z, Lei J, Ju H, Yan F. Strand displacement activated peroxidase activity of hemin for fluorescent DNA sensing. Analyst 2015; 140:6532-7. [PMID: 26295460 DOI: 10.1039/c5an01206f] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The toehold-mediated DNA strand displacement was utilized to regulate the catalytic activity of the peroxidase mimic hemin and design a fluorescent DNA sensing method with high specificity.
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Affiliation(s)
- Quanbo Wang
- State Key Laboratory of Analytical Chemistry for Life Science
- School of Chemistry and Chemical Engineering
- Nanjing University
- Nanjing 210093
- P.R. China
| | - Nan Xu
- State Key Laboratory of Analytical Chemistry for Life Science
- School of Chemistry and Chemical Engineering
- Nanjing University
- Nanjing 210093
- P.R. China
| | - Zhen Gui
- Department of Clinical Laboratory
- Nanjing Medical University Cancer Hospital & Jiangsu Cancer Hospital
- Nanjing 210009
- P.R. China
| | - Jianping Lei
- State Key Laboratory of Analytical Chemistry for Life Science
- School of Chemistry and Chemical Engineering
- Nanjing University
- Nanjing 210093
- P.R. China
| | - Huangxian Ju
- State Key Laboratory of Analytical Chemistry for Life Science
- School of Chemistry and Chemical Engineering
- Nanjing University
- Nanjing 210093
- P.R. China
| | - Feng Yan
- Department of Clinical Laboratory
- Nanjing Medical University Cancer Hospital & Jiangsu Cancer Hospital
- Nanjing 210009
- P.R. China
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