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Ye W, Zhang Z, Wang C, Feng Z, Hu Z, Liu Q, Wu T. Detection of small molecules by extending the terminal protection to the polymerase. Microchem J 2023. [DOI: 10.1016/j.microc.2023.108701] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/31/2023]
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2
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Label-Free Fluorescence Molecular Beacon Probes Based on G-Triplex DNA and Thioflavin T for Protein Detection. Molecules 2021; 26:molecules26102962. [PMID: 34067563 PMCID: PMC8156537 DOI: 10.3390/molecules26102962] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2021] [Revised: 05/07/2021] [Accepted: 05/11/2021] [Indexed: 11/16/2022] Open
Abstract
Protein detection plays an important role in biological and biomedical sciences. The immunoassay based on fluorescence labeling has good specificity but a high labeling cost. Herein, on the basis of G-triplex molecular beacon (G3MB) and thioflavin T (ThT), we developed a simple and label-free biosensor for protein detection. The biotin and streptavidin were used as model enzymes. In the presence of target streptavidin (SA), the streptavidin hybridized with G3MB-b (biotin-linked-G-triplex molecular beacon) perfectly and formed larger steric hindrance, which hindered the hydrolysis of probes by exonuclease III (Exo III). In the absence of target streptavidin, the exonuclease III successively cleaved the stem of G3MB-b and released the G-rich sequences which self-assembled into a G-triplex and subsequently activated the fluorescence signal of thioflavin T. Compared with the traditional G-quadruplex molecular beacon (G4MB), the G3MB only needed a lower dosage of exonuclease III and a shorter reaction time to reach the optimal detection performance, because the concise sequence of G-triplex was good for the molecular beacon design. Moreover, fluorescence experiment results exhibited that the G3MB-b had good sensitivity and specificity for streptavidin detection. The developed label-free biosensor provides a valuable and general platform for protein detection.
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3
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Li J, Fu W, Wang Z, Dai Z. Substrate specificity-enabled terminal protection for direct quantification of circulating MicroRNA in patient serums. Chem Sci 2019; 10:5616-5623. [PMID: 31293746 PMCID: PMC6552989 DOI: 10.1039/c8sc05240a] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2018] [Accepted: 04/28/2019] [Indexed: 12/12/2022] Open
Abstract
Currently, reported affinity pairings still lack in diversity, and thus terminal protection relying on steric hindrance is restricted in designing nucleic acid-based analytical systems. In this work, resistance to exonuclease is testified by group modification or backbone replacement, and the 3'-phosphate group (P) reveals the strongest exonuclease I-resistant capability. Due to the substrate specificity of enzymatic catalysis, this 3'-P protection works in a "direct mode". By introducing DNA templated copper nanoparticles, an alkaline phosphatase assay is performed to confirm the 3'-P protection. To display the application of this novel terminal protection, a multifunctional DNA is designed to quantify the model circulating microRNA (hsa-miR-21-5p) in serums from different cancer patients. According to our data, hsa-miR-21-5p-correlated cancers can be evidently distinguished from non-correlated cancers. Meanwhile, the effect of chemotherapy and radiotherapy on breast cancer is evaluated from the perspective of hsa-miR-21-5p residue in serums. Since greatly reducing the limitations of DNA design, this P-induced terminal protection can be facilely integrated with other DNA manipulations, thereby constructing more advanced biosensors with improved analytical performances for clinical applications.
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Affiliation(s)
- Junyao Li
- Jiangsu Collaborative Innovation Center of Biomedical Functional Materials , Jiangsu Key Laboratory of Biofunctional Materials , School of Chemistry and Materials Science , Nanjing Normal University , Nanjing , 210023 , P. R. China . ; ; Tel: +86-25-85891051
| | - Wenxin Fu
- Jiangsu Collaborative Innovation Center of Biomedical Functional Materials , Jiangsu Key Laboratory of Biofunctional Materials , School of Chemistry and Materials Science , Nanjing Normal University , Nanjing , 210023 , P. R. China . ; ; Tel: +86-25-85891051
| | - Zhaoyin Wang
- Jiangsu Collaborative Innovation Center of Biomedical Functional Materials , Jiangsu Key Laboratory of Biofunctional Materials , School of Chemistry and Materials Science , Nanjing Normal University , Nanjing , 210023 , P. R. China . ; ; Tel: +86-25-85891051
| | - Zhihui Dai
- Jiangsu Collaborative Innovation Center of Biomedical Functional Materials , Jiangsu Key Laboratory of Biofunctional Materials , School of Chemistry and Materials Science , Nanjing Normal University , Nanjing , 210023 , P. R. China . ; ; Tel: +86-25-85891051
- Nanjing Normal University Center for Analysis and Testing , Nanjing , 210023 , P. R. China
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4
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Zhang K, Huang W, Li H, Xie M, Wang J. Ultrasensitive detection of hERG potassium channel in single-cell with photocleavable and entropy-driven reactions by using an electrochemical biosensor. Biosens Bioelectron 2019; 132:310-318. [DOI: 10.1016/j.bios.2019.02.065] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2019] [Accepted: 02/26/2019] [Indexed: 12/23/2022]
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5
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Hongxia C, Zaijun L, Ruiyi L, Guangli W, Zhiguo G. Molecular machine and gold/graphene quantum dot hybrid based dual amplification strategy for voltammetric detection of VEGF165. Mikrochim Acta 2019; 186:242. [PMID: 30877385 DOI: 10.1007/s00604-019-3336-6] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2018] [Accepted: 02/23/2019] [Indexed: 10/27/2022]
Abstract
Graphene quantum dots (GQDs) were prepared via pyrolysis of citric acid and glutamic acid, then reacted with chlorauric acid to form a gold/graphene quantum dot hybrid (Au/GQD), and finally connected with hairpin DNA probe 1 (H1) and thionine (Thi). The H1-Au/GQD-Thi composite is found to be a viable redox probe for electrochemical and aptamer-based determination of vascular endothelial growth factor VEGF165. A dual amplification strategy is employed based on the use of molecular machine and the Au/GQD. Each single VEGF165 molecule can bind two DNA probes via specific aptamer-target recognition to produce a molecular machine. Surface-tethered hairpin DNA 2 (H2) hybridizes with the molecular machine through proximity effect, and the prelocked toehold domain of H2 becomes exposed. This part binds to H1-Au/GQD-Thi to release the molecular machine which then moves to the neighboring H2 upon which a surface programmatic chain reaction is initiated. By continuous molecular machine travel, many H1-Au/GQD-Thi probes are present on the gold electrode surface. This implies an efficient signal amplification capability. The Au/GQD based redox probes in-situ catalyzes the redox activity of thionine and further enhances the detection signal. The aptasensor exhibits ultrahigh sensitivity and selectivity for VEGF165. The square wave voltammetric signal, best measured at -0.18 V vs. Ag/AgCl, increases linearly in the 1.0 fM to 120 pM VEGF165 concentration range, and the detection limit is 0.3 fM. Conceivably, the method may be applied to other target proteins if the corresponding high-affinity aptamers are available. Graphical abstract This study report one dual amplification strategy for ultrasensitive electrochemical detection of VEGF165 based on gold-graphene quantum dot hybrid (Au/GQD) and bipedal molecular machine (BMM) powered surface programmatic chain reaction (SPCR).
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Affiliation(s)
- Chu Hongxia
- School of Chemical and Material Engineering, Jiangnan University, Wuxi, 214122, China
| | - Li Zaijun
- School of Chemical and Material Engineering, Jiangnan University, Wuxi, 214122, China.
| | - Li Ruiyi
- School of Pharmaceutical Sciences, Jiangnan University, Wuxi, 214122, China.
| | - Wang Guangli
- School of Chemical and Material Engineering, Jiangnan University, Wuxi, 214122, China
| | - Gu Zhiguo
- School of Chemical and Material Engineering, Jiangnan University, Wuxi, 214122, China
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6
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Zhou X, Cui Z, Liu L, Sun Z, Lin M, Hu Q, Wang H, Xiao X. Small molecule-protein interactions in branch migration thermodynamics: modelling and application in the homogeneous detection of proteins and small molecules. Analyst 2018; 143:2755-2759. [PMID: 29850719 DOI: 10.1039/c8an00555a] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
We have disclosed the unique inhibition effect of small molecule-protein interactions toward the DNA branch migration process and constructed a complete thermodynamic model for it. The disclosed effect was further coupled with the steric hindrance effect to establish a homogeneous assay for proteins and small molecules with ultra-high inhibition factors and sensitivity.
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Affiliation(s)
- Xing Zhou
- Centre of Reproductive Medicine/Family Planning Research Institute, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, PR China.
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7
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Liu Y, Gao L, Yan H, Shangguan J, Zhang Z, Xiang X. A cationic conjugated polymer coupled with exonuclease I: application to the fluorometric determination of protein and cell imaging. Mikrochim Acta 2018; 185:118. [PMID: 29594586 DOI: 10.1007/s00604-017-2661-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2017] [Accepted: 12/31/2017] [Indexed: 11/25/2022]
Abstract
A strategy is described for the detection of protein by using a cationic fluorescent conjugated polymer coupled with exonuclease I (Exo I). Taking streptavidin (SA) as model protein, it is observed that Exo I can digest single-stranded DNA conjugated with biotin and carboxyfluorescein (P1) if SA is absent. This leads to the formation of small nucleotide fragments and to weak fluorescence resonance energy transfer (FRET) from the polymer to P1. If, however, SA is present, the high affinity of SA and biotin prevents the digestion of P1 by Exo I. This results in the sorption of P1 on the surface of the polymer through strong electrostatic interaction. Hence, efficient FRET occurs from the fluorescent polymer to the fluorescent label of P1. Fluorescence is measured at an excitation wavelength of 370 nm, and emission is measured at two wavelengths (530 and 425 nm). The ratio of the two intensities (I530/I425) is directly related to the concentration of SA. Under the optimal conditions, the assay has a detection limit of 1.3 ng·mL-1. The method was also applied to image the folate receptor in HeLa cells, thus demonstrating the versatility of this strategy. Graphical abstract A fluorometric strategy is described for protein detection and cell imaging based on a cationic conjugated polymer (PFP) coupled with exonuclease I (Exo I) trigged fluorescence resonance energy transfer (FRET).
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Affiliation(s)
- Yufei Liu
- School of Pharmacy, Xinxiang Medical University, Xinxiang, Henan, 453003, People's Republic of China.
| | - Liyun Gao
- Department of toxicology, School of Public Health, Xinxiang Medical University, Xinxiang, Henan, 453003, People's Republic of China
| | - Huijuan Yan
- School of Pharmacy, Xinxiang Medical University, Xinxiang, Henan, 453003, People's Republic of China
| | - Jingfang Shangguan
- School of Pharmacy, Xinxiang Medical University, Xinxiang, Henan, 453003, People's Republic of China
| | - Zhen Zhang
- Oil Crops Research Institute of the Chinese Academy of Agricultural Sciences, Wuhan, Hubei, 430000, People's Republic of China
| | - Xia Xiang
- Oil Crops Research Institute of the Chinese Academy of Agricultural Sciences, Wuhan, Hubei, 430000, People's Republic of China.
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8
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Kim H, Lee CY, Song J, Yoon J, Park KS, Park HG. Protein-induced fluorescence enhancement for a simple and universal detection of protein/small molecule interactions. RSC Adv 2018; 8:39913-39917. [PMID: 35558217 PMCID: PMC9091315 DOI: 10.1039/c8ra08515c] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2018] [Accepted: 11/19/2018] [Indexed: 12/04/2022] Open
Abstract
We herein describe a novel and efficient method for the detection of protein/small molecule (SM) interactions, which relies on the protein-induced fluorescence enhancement (PIFE). In this method, a duplex probe is designed to position Cy3 and SM at the optimal distance to maximize the effect of PIFE, which is utilized as the key component. In the presence of target proteins that bind to SM, the Cy3 is guided close to the target proteins, which significantly enhances the fluorescence signal through a process of PIFE. With this approach, we successfully analyzed a model target protein, streptavidin (STV) that interacts with biotin (BTN) in less than 10 min without any washing steps. In addition, the practical applicability of this method was demonstrated by reliably determining STV in human serum. Finally, the universal applicability of this method was demonstrated by monitoring the interaction between folate and folate receptors. We herein describe a novel and efficient method for the detection of protein/small molecule (SM) interactions, which relies on the protein-induced fluorescence enhancement (PIFE).![]()
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Affiliation(s)
- Hansol Kim
- Department of Chemical and Biomolecular Engineering (BK 21+ Program)
- KAIST
- Daejeon 305-701
- Republic of Korea
| | - Chang Yeol Lee
- Department of Chemical and Biomolecular Engineering (BK 21+ Program)
- KAIST
- Daejeon 305-701
- Republic of Korea
| | - Jayeon Song
- Department of Chemical and Biomolecular Engineering (BK 21+ Program)
- KAIST
- Daejeon 305-701
- Republic of Korea
| | - Junhyeok Yoon
- Department of Chemical and Biomolecular Engineering (BK 21+ Program)
- KAIST
- Daejeon 305-701
- Republic of Korea
| | - Ki Soo Park
- Department of Biological Engineering
- College of Engineering
- Konkuk University
- Seoul 05029
- Republic of Korea
| | - Hyun Gyu Park
- Department of Chemical and Biomolecular Engineering (BK 21+ Program)
- KAIST
- Daejeon 305-701
- Republic of Korea
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9
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DNA covalently linked to graphene oxide for biotin–streptavidin interaction assay. Talanta 2017; 163:140-145. [DOI: 10.1016/j.talanta.2016.10.096] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2016] [Revised: 10/25/2016] [Accepted: 10/27/2016] [Indexed: 11/17/2022]
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10
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Shi H, Mao X, Chen X, Wang Z, Wang K, Zhu X. The analysis of proteins and small molecules based on sterically tunable nucleic acid hyperbranched rolling circle amplification. Biosens Bioelectron 2016; 91:136-142. [PMID: 28006680 DOI: 10.1016/j.bios.2016.12.016] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2016] [Revised: 12/06/2016] [Accepted: 12/07/2016] [Indexed: 12/15/2022]
Abstract
In this work, we succeeded in establishing a new method for proteins and small molecules analysis based on the small molecule-linked DNA and nucleic acid hyperbranched rolling circle amplification (HRCA). Small molecule linked DNA by chemical modification was used as a flexible tool to study protein-small molecule interactions. The HRCA reaction which would produce signal amplification was regulated by the steric effect depending on whether the target proteins were present. In the implement of the proposed strategy, streptavidin (SA)-biotin and anti-digoxin antibody (anti-Dig)-digoxin were chosen as two model partners. Experimental results showed that the quantitative detection of SA and anti-Dig was realized both with nanomolar detection limits. The small molecules biotin and digoxin were also detected at nanomolar levels in a wide range of 1nM~100µM and 1nM~10µM, respectively. Meanwhile, the results indicated that the method had a favorable specificity in analyzing proteins or small molecules. Thus, it may be expected to quantitatively analyze some protein markers and small molecular drugs in complex biological samples.
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Affiliation(s)
- Hai Shi
- Center for Molecular Recognition and Biosensing, School of Life Sciences, Shanghai University, Shanghai 200444, China
| | - Xiaoxia Mao
- Center for Molecular Recognition and Biosensing, School of Life Sciences, Shanghai University, Shanghai 200444, China
| | - Xiaoxia Chen
- Center for Molecular Recognition and Biosensing, School of Life Sciences, Shanghai University, Shanghai 200444, China
| | - Zihan Wang
- Center for Molecular Recognition and Biosensing, School of Life Sciences, Shanghai University, Shanghai 200444, China
| | - Keming Wang
- Department of Oncology, The Second Affiliated Hospital of Nanjing Medical University, Nanjing 210011, China.
| | - Xiaoli Zhu
- Center for Molecular Recognition and Biosensing, School of Life Sciences, Shanghai University, Shanghai 200444, China.
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11
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Simple and convenient G-quadruplex-based fluorescent assay of biotin-streptavidin interaction via terminal protection of small molecule-linked DNA. Mikrochim Acta 2016. [DOI: 10.1007/s00604-016-1980-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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12
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Detection of biotin-streptavidin interactions via terminal protection of small molecule linked DNA and the formation of fluorescent DNA-templated silver nanoclusters. Mikrochim Acta 2016. [DOI: 10.1007/s00604-016-1968-3] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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13
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Cao J, Wang W, Bo B, Mao X, Wang K, Zhu X. A dual-signal strategy for the solid detection of both small molecules and proteins based on magnetic separation and highly fluorescent copper nanoclusters. Biosens Bioelectron 2016; 90:534-541. [PMID: 27825879 DOI: 10.1016/j.bios.2016.10.021] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2016] [Revised: 09/23/2016] [Accepted: 10/06/2016] [Indexed: 11/28/2022]
Abstract
Recently, a variety of analytical methods for the detection of small molecules or proteins based on small molecule-protein interaction have been developed. However, these methods often focus on either small molecules or proteins. Few efforts are made to detect both of them in the same system. In this work, a dual-signal strategy for the solid detection of both small molecules and proteins based on small molecule-protein interaction is proposed by using the streptavidin-biotin couple as a model. In our strategy, magnetic nanoparticles (MNPs) are adopted for target separation, and highly fluorescent copper nanoclusters (CuNCs) are synthesized in situ to give signals. In the absence of the targets, CuNCs are associated with the MNPs and present in the precipitate under magnetic field; whereas in the presence of either streptavidin or biotin, the CuNCs will present in the supernate. By monitoring the fluorescent intensity of each, dual-signal can be obtained for the solid detection of either the protein or the small molecule. Results show that sensitive and specific detection of both streptavidin (detection limit: 0.47nM) and biotin (detection limit: 3.1nM) can be achieved. This method can be extended for the detection of other small molecule-protein couples, and thereby has the potential for biomedical and clinical applications.
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Affiliation(s)
- Jiepei Cao
- Center for Molecular Recognition and Biosensing, School of Life Sciences, Shanghai University, Shanghai 200444, China
| | - Wei Wang
- Center for Molecular Recognition and Biosensing, School of Life Sciences, Shanghai University, Shanghai 200444, China
| | - Bing Bo
- Department of Medical Oncology, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai 200433, China
| | - Xiaoxia Mao
- Center for Molecular Recognition and Biosensing, School of Life Sciences, Shanghai University, Shanghai 200444, China
| | - Keming Wang
- Department of Oncology, The second Affiliated Hospital of Nanjing Medical University, Nanjing 210011, China.
| | - Xiaoli Zhu
- Center for Molecular Recognition and Biosensing, School of Life Sciences, Shanghai University, Shanghai 200444, China.
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14
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Terminal protection of a small molecule-linked loop DNA probe for turn-on label-free fluorescence detection of proteins. Biosens Bioelectron 2016; 83:97-101. [DOI: 10.1016/j.bios.2016.04.038] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2016] [Revised: 04/12/2016] [Accepted: 04/13/2016] [Indexed: 02/06/2023]
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15
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Ban F, Shi H, Feng C, Mao X, Yin Y, Zhu X. A one-pot strategy for the detection of proteins based on sterically and allosterically tunable hybridization chain reaction. Biosens Bioelectron 2016; 86:219-224. [PMID: 27376192 DOI: 10.1016/j.bios.2016.06.070] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2016] [Revised: 06/21/2016] [Accepted: 06/21/2016] [Indexed: 01/05/2023]
Abstract
In this work, we report a facile one-pot strategy for protein detection based on sterically and allosterically tunable hybridization chain reaction (HCR). In our strategy, DNA hairpins H1 and H2 are dual-labeled with pyrene moieties through a six-carbon-atom spacer at each end; and a single-stranded DNA primer is designed to contain two small molecules near each end. In the absence of target protein, the primer can trigger HCR events between alternating H1 and H2 hairpins to form a nicked double-helix. As a result, the pyrene excimers are formed to emit at approximately 485nm. On the contrary, upon binding of the specific target protein onto the primer through the protein-small molecule interaction, the HCR will be inhibited due to the steric and allosteric effect. The changes of the fluorescent signals of pyrene excimers are in response to the concentration of target protein, so that the detection of protein can be realized. We have demonstrated the feasibility of this strategy by using streptavidin (SA) and folate receptor (FR) as model targets. Results show that both of them can be well detected with a detection limit of 1.07nM and 2.7nM, respectively. The developed method for protein assay is flexible, so we infer that the one-pot strategy holds great potential for the detection of other proteins.
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Affiliation(s)
- Fangfang Ban
- Laboratory of Biosensing Technology, School of Life Sciences, Shanghai University, Shanghai 200444, China
| | - Hai Shi
- Laboratory of Biosensing Technology, School of Life Sciences, Shanghai University, Shanghai 200444, China; State Key Laboratory of Pharmaceutical Biotechnology, Department of Biochemistry, Nanjing University, Nanjing 210093, China
| | - Chang Feng
- State Key Laboratory of Pharmaceutical Biotechnology, Department of Biochemistry, Nanjing University, Nanjing 210093, China
| | - Xiaoxia Mao
- Laboratory of Biosensing Technology, School of Life Sciences, Shanghai University, Shanghai 200444, China
| | - Yongmei Yin
- Department of Oncology, the First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China.
| | - Xiaoli Zhu
- Laboratory of Biosensing Technology, School of Life Sciences, Shanghai University, Shanghai 200444, China.
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16
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Chen J, Liu Y, Ji X, He Z. Target-protecting dumbbell molecular probe against exonucleases digestion for sensitive detection of ATP and streptavidin. Biosens Bioelectron 2016; 83:221-8. [PMID: 27131994 DOI: 10.1016/j.bios.2016.04.055] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2016] [Revised: 04/03/2016] [Accepted: 04/18/2016] [Indexed: 12/20/2022]
Abstract
In this work, a versatile dumbbell molecular (DM) probe was designed and employed in the sensitively homogeneous bioassay. In the presence of target molecule, the DM probe was protected from the digestion of exonucleases. Subsequently, the protected DM probe specifically bound to the intercalation dye and resulted in obvious fluorescence signal which was used to determine the target molecule in return. This design allows specific and versatile detection of diverse targets with easy operation and no sophisticated fluorescence labeling. Integrating the idea of target-protecting DM probe with adenosine triphosphate (ATP) involved ligation reaction, the DM probe with 5'-end phosphorylation was successfully constructed for ATP detection, and the limitation of detection was found to be 4.8 pM. Thanks to its excellent selectivity and sensitivity, this sensing strategy was used to detect ATP spiked in human serum as well as cellular ATP. Moreover, the proposed strategy was also applied in the visual detection of ATP in droplet-based microfluidic platform with satisfactory results. Similarly, combining the principle of target-protecting DM probe with streptavidin (SA)-biotin interaction, the DM probe with 3'-end biotinylation was developed for selective and sensitive SA determination, which demonstrated the robustness and versatility of this design.
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Affiliation(s)
- Jinyang Chen
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China
| | - Yucheng Liu
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China
| | - Xinghu Ji
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China
| | - Zhike He
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China.
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17
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Chen J, Gao C, Mallik AK, Qiu H. A WS2 nanosheet-based nanosensor for the ultrasensitive detection of small molecule–protein interaction via terminal protection of small molecule-linked DNA and Nt.BstNBI-assisted recycling amplification. J Mater Chem B 2016; 4:5161-5166. [DOI: 10.1039/c6tb00881j] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A novel, ultrasensitive and specific fluorescent nanosensor for the detection of small molecule–protein interaction based on the terminal protection of small molecule-linked DNA and Nt.BstNBI-assisted recycling amplification was reported.
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Affiliation(s)
- Jia Chen
- Key Laboratory of Chemistry of Northwestern Plant Resources
- Key Laboratory for Natural Medicine of Gansu Province
- Lanzhou Institute of Chemical Physics
- Chinese Academy of Sciences
- Lanzhou 730000
| | - Cunji Gao
- Key Laboratory of Chemistry of Northwestern Plant Resources
- Key Laboratory for Natural Medicine of Gansu Province
- Lanzhou Institute of Chemical Physics
- Chinese Academy of Sciences
- Lanzhou 730000
| | - Abul K. Mallik
- Department of Applied Chemistry and Chemical Engineering
- University of Dhaka
- Dhaka-1000
- Bangladesh
| | - Hongdeng Qiu
- Key Laboratory of Chemistry of Northwestern Plant Resources
- Key Laboratory for Natural Medicine of Gansu Province
- Lanzhou Institute of Chemical Physics
- Chinese Academy of Sciences
- Lanzhou 730000
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18
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Kong XJ, Wu S, Cen Y, Chen TT, Yu RQ, Chu X. Endonuclease IV cleaves apurinic/apyrimidinic sites in single-stranded DNA and its application for biosensing. Analyst 2016; 141:4373-80. [DOI: 10.1039/c6an00738d] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
The cleaving capability of endonuclease IV to apurinic/apyrimidinic sites in single-stranded DNA has been demonstrated. It was further applied to construct a novel dual signal amplified sensing system for highly sensitive enzyme and protein detection.
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Affiliation(s)
- Xiang-Juan Kong
- State Key Laboratory of Chemo/Bio-Sensing and Chemometrics
- College of Chemistry and Chemical Engineering
- Hunan University
- Changsha
- P. R. China
| | - Shuang Wu
- State Key Laboratory of Chemo/Bio-Sensing and Chemometrics
- College of Chemistry and Chemical Engineering
- Hunan University
- Changsha
- P. R. China
| | - Yao Cen
- State Key Laboratory of Chemo/Bio-Sensing and Chemometrics
- College of Chemistry and Chemical Engineering
- Hunan University
- Changsha
- P. R. China
| | - Ting-Ting Chen
- State Key Laboratory of Chemo/Bio-Sensing and Chemometrics
- College of Chemistry and Chemical Engineering
- Hunan University
- Changsha
- P. R. China
| | - Ru-Qin Yu
- State Key Laboratory of Chemo/Bio-Sensing and Chemometrics
- College of Chemistry and Chemical Engineering
- Hunan University
- Changsha
- P. R. China
| | - Xia Chu
- State Key Laboratory of Chemo/Bio-Sensing and Chemometrics
- College of Chemistry and Chemical Engineering
- Hunan University
- Changsha
- P. R. China
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19
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Xiang X, Shi J, Huang F, Zheng M, Deng Q, Xu J. MoS2 nanosheet-based fluorescent biosensor for protein detection via terminal protection of small-molecule-linked DNA and exonuclease III-aided DNA recycling amplification. Biosens Bioelectron 2015; 74:227-32. [DOI: 10.1016/j.bios.2015.06.045] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2015] [Revised: 06/06/2015] [Accepted: 06/19/2015] [Indexed: 12/15/2022]
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20
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Zhao J, Hu S, Cao Y, Zhang B, Li G. Electrochemical detection of protein based on hybridization chain reaction-assisted formation of copper nanoparticles. Biosens Bioelectron 2015; 66:327-31. [DOI: 10.1016/j.bios.2014.11.039] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2014] [Revised: 11/11/2014] [Accepted: 11/20/2014] [Indexed: 12/30/2022]
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21
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Gong X, Zhou W, Chai Y, Xiang Y, Yuan R. Terminal protection of small molecule-linked ssDNA for label-free and highly sensitive colorimetric detection of folate receptor biomarkers. RSC Adv 2015. [DOI: 10.1039/c4ra13997f] [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] Open
Abstract
Protection of ssDNA from digesting by Exo I generates amplified color transition for label-free and sensitive detection of folate receptors.
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Affiliation(s)
- Xue Gong
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry
- Ministry of Education
- School of Chemistry and Chemical Engineering
- Southwest University
- Chongqing 400715
| | - Wenjiao Zhou
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry
- Ministry of Education
- School of Chemistry and Chemical Engineering
- Southwest University
- Chongqing 400715
| | - Yaqin Chai
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry
- Ministry of Education
- School of Chemistry and Chemical Engineering
- Southwest University
- Chongqing 400715
| | - Yun Xiang
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry
- Ministry of Education
- School of Chemistry and Chemical Engineering
- Southwest University
- Chongqing 400715
| | - Ruo Yuan
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry
- Ministry of Education
- School of Chemistry and Chemical Engineering
- Southwest University
- Chongqing 400715
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22
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Huang RC, Chiu WJ, Li YJ, Huang CC. Detection of microRNA in tumor cells using exonuclease III and graphene oxide-regulated signal amplification. ACS APPLIED MATERIALS & INTERFACES 2014; 6:21780-21787. [PMID: 24730476 DOI: 10.1021/am500534g] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
In this study, we developed a label-free, ultrasensitive graphene oxide (GO)-based probe for the detection of oligonucleotides by laser desorption/ionization mass spectrometry (LDI-MS). On the basis of simple π-π stacking and electrostatic interactions between rhodamine 6G (R6G) and GO, we prepared the nanocomposite R6G-modified GO (R6G-GO). Signal intensities of R6G increased in mass spectra in the presence of single-stranded oligonucleotides under pulsed laser irradiation (355 nm) of R6G-GO. In addition, the signal intensity of R6G was stronger in the presence of short oligonucleotides. Because small oligonucleotides improve the LDI efficiency of R6G on GO, we designed an enzyme-amplified signal transduction probe system for the detection of microRNA (miRNA). After specific digestion of the probe DNA (pDNA) strand from pDNA/miRNA-hybridized complexes by exonuclease III (Exo III), the resulting small oligonucleotide fragments increased the R6G signal during LDI-MS of R6G-GO. In addition, the signal intensity of the R6G ions increased with increasing concentrations of the target miRNA. Coupling this enzyme reaction and R6G-GO with LDI-MS enabled the detection of miRNA at concentrations of the femtomolar (fM) level. We also demonstrated the analysis of miRNA in tumor cells and utilized this R6G-GO probe in the detection of a single-nucleotide polymorphism (SNP) in the Arg249Ser unit of the TP53 gene. This simple, rapid, and sensitive detection system based on the coupling of functional GO with LDI-MS appears to have great potential as a tool for the bioanalyses of oligonucleotides and proteins.
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Affiliation(s)
- Rong-Cing Huang
- Institute of Bioscience and Biotechnology and ‡Center of Excellence for the Oceans, National Taiwan Ocean University , Keelung 20224, Taiwan
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23
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Terminal protection of small molecule-linked DNA for small molecule-protein interaction assays. Int J Mol Sci 2014; 15:5221-32. [PMID: 24670475 PMCID: PMC4013559 DOI: 10.3390/ijms15045221] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2014] [Revised: 03/15/2014] [Accepted: 03/17/2014] [Indexed: 01/24/2023] Open
Abstract
Methods for the detection of specific interactions between diverse proteins and various small-molecule ligands are of significant importance in understanding the mechanisms of many critical physiological processes of organisms. The techniques also represent a major avenue to drug screening, molecular diagnostics, and public safety monitoring. Terminal protection assay of small molecule-linked DNA is a demonstrated novel methodology which has exhibited great potential for the development of simple, sensitive, specific and high-throughput methods for the detection of small molecule–protein interactions. Herein, we review the basic principle of terminal protection assay, the development of associated methods, and the signal amplification strategies adopted for performance improving in small molecule–protein interaction assay.
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24
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Yang X, Gao Z. Gold nanoparticle-based exonuclease III signal amplification for highly sensitive colorimetric detection of folate receptor. NANOSCALE 2014; 6:3055-3058. [PMID: 24500117 DOI: 10.1039/c3nr06139f] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
By combining terminal protection of small molecule (folate)-capped DNA probes, exonuclease III signal amplification and gold nanoparticles, we developed a simple and label-free colorimetric assay for highly sensitive detection of folate receptor (FR). A detection limit of 50 fM FR was obtained using UV-vis spectrometry and 10 pM FR could be visualized by the naked eye.
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Affiliation(s)
- Xinjian Yang
- Department of Chemistry, National University of Singapore, Singapore 117543.
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25
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Chen J, Zhou S, Wen J. Disposable Strip Biosensor for Visual Detection of Hg2+ Based on Hg2+-Triggered Toehold Binding and Exonuclease III-Assisted Signal Amplification. Anal Chem 2014; 86:3108-14. [DOI: 10.1021/ac404170j] [Citation(s) in RCA: 124] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Junhua Chen
- Guangdong Institute of Eco-Environment and Soil Sciences, Guangzhou 510650, China
| | - Shungui Zhou
- Guangdong Institute of Eco-Environment and Soil Sciences, Guangzhou 510650, China
| | - Junlin Wen
- Guangdong Institute of Eco-Environment and Soil Sciences, Guangzhou 510650, China
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