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Qiu F, Gan X, Yao J, Jiang B, Yuan R, Xiang Y. CRISPR/Cas12a-derived sensitive electrochemical biosensing of NF-κB p50 based on hybridization chain reaction and DNA hydrogel. Biosens Bioelectron 2022; 216:114665. [DOI: 10.1016/j.bios.2022.114665] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2022] [Revised: 08/08/2022] [Accepted: 08/25/2022] [Indexed: 11/16/2022]
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2
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Zhang BY, Yin P, Hu Y, Szydzik C, Khan MW, Xu K, Thurgood P, Mahmood N, Dekiwadia C, Afrin S, Yang Y, Ma Q, McConville CF, Khoshmanesh K, Mitchell A, Hu B, Baratchi S, Ou JZ. Highly accurate and label-free discrimination of single cancer cell using a plasmonic oxide-based nanoprobe. Biosens Bioelectron 2022; 198:113814. [PMID: 34823964 DOI: 10.1016/j.bios.2021.113814] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2021] [Revised: 11/01/2021] [Accepted: 11/14/2021] [Indexed: 12/24/2022]
Abstract
The detection of cancer cells at the single-cell level enables many novel functionalities such as next-generation cancer prognosis and accurate cellular analysis. While surface-enhanced Raman spectroscopy (SERS) has been widely considered as an effective tool in a low-cost and label-free manner, however, it is challenging to discriminate single cancer cells with an accuracy above 90% mainly due to the poor biocompatibility of the noble-metal-based SERS agents. Here, we report a dual-functional nanoprobe based on dopant-driven plasmonic oxides, demonstrating a maximum accuracy above 90% in distinguishing single THP-1 cell from peripheral blood mononuclear cell (PBMC) and human embryonic kidney (HEK) 293 from human macrophage cell line U937 based on their SERS patterns. Furthermore, this nanoprobe can be triggered by the bio-redox response from individual cells towards stimuli, empowering another complementary colorimetric cell detection, approximately achieving the unity discrimination accuracy at a single-cell level. Our strategy could potentially enable the future accurate and low-cost detection of cancer cells from mixed cell samples.
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Affiliation(s)
- Bao Yue Zhang
- School of Engineering, RMIT University, Melbourne, Victoria, 3000, Australia.
| | - Pengju Yin
- School of Mathematics and Physics, Hebei University of Engineering, Handan, 056038, China; School of Life Science and Technology, Xidian University, Xi'an, 710126, China
| | - Yihong Hu
- School of Engineering, RMIT University, Melbourne, Victoria, 3000, Australia
| | - Crispin Szydzik
- School of Engineering, RMIT University, Melbourne, Victoria, 3000, Australia; The Australian Centre for Blood Diseases, Monash University, Melbourne, Victoria, 3004, Australia
| | - Muhammad Waqas Khan
- School of Engineering, RMIT University, Melbourne, Victoria, 3000, Australia; Manufacturing, CSIRO, Clayton, Victoria, 3168, Australia
| | - Kai Xu
- School of Engineering, RMIT University, Melbourne, Victoria, 3000, Australia
| | - Peter Thurgood
- School of Engineering, RMIT University, Melbourne, Victoria, 3000, Australia
| | - Nasir Mahmood
- School of Engineering, RMIT University, Melbourne, Victoria, 3000, Australia
| | - Chaitali Dekiwadia
- RMIT Microscopy and Microanalysis Facility (RMMF), RMIT University, Melbourne, 3001, Australia
| | - Sanjida Afrin
- School of Engineering, RMIT University, Melbourne, Victoria, 3000, Australia
| | - Yunyi Yang
- Faculty of Science, Engineering and Technology, Swinburne University of Technology, Hawthorn, VIC, 3122 Australia
| | - Qijie Ma
- School of Engineering, RMIT University, Melbourne, Victoria, 3000, Australia
| | - Chris F McConville
- Institute for Frontier Materials (IFM), Deakin University, Waurn Ponds, VIC, 3216, Australia
| | | | - Arnan Mitchell
- School of Engineering, RMIT University, Melbourne, Victoria, 3000, Australia
| | - Bo Hu
- School of Life Science and Technology, Xidian University, Xi'an, 710126, China
| | - Sara Baratchi
- School of Health and Biomedical Sciences, RMIT University, Bundoora, VIC, 3083 Australia; Baker Heart and Diabetes Institute, Melbourne, Victoria, Australia.
| | - Jian Zhen Ou
- School of Engineering, RMIT University, Melbourne, Victoria, 3000, Australia.
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3
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Zhao L, Zhao C, Zhou J, Ji H, Qin Y, Li G, Wu L, Zhou X. Conjugated Polymers-based Luminescent Probes for Ratiometric Detection of Biomolecules. J Mater Chem B 2022; 10:7309-7327. [DOI: 10.1039/d2tb00937d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Accurate monitoring of the biomolecular changes in biological and physiological environments is of great significance for pathogenesis, development, diagnosis and treatment of diseases. Compared with traditional luminescent probes on the...
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4
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Huang C, Xu X, Jiang D, Jiang W. Binding mediated MNAzyme signal amplification strategy for enzyme-free and label-free detection of DNA-binding proteins. Anal Chim Acta 2021; 1166:338560. [PMID: 34022996 DOI: 10.1016/j.aca.2021.338560] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2020] [Revised: 04/13/2021] [Accepted: 04/20/2021] [Indexed: 10/21/2022]
Abstract
A novel MNAzyme signal amplification strategy was developed for enzyme-free and label-free detection of DNA-binding proteins. This strategy relied on the binding-mediated MNAzyme cleavage and G-quadruplex-based light-up fluorescence switch. Three DNA sequences were designed to construct the MNAzyme in which DNA1 (including half binding site of the target protein and a toehold sequence) and DNA2 (including another half binding site of the target protein and one MNAzyme partzyme) firstly hybridized. The target protein recognized the binding sites on DNA1-DNA2 hybrid to form a stable protein-DNA1-DNA2 conjugates. Then, the MNAzyme was assembled with the presence of DNA3 which contained another MNAzyme partzyme and the complementary sequence of DNA1. The active MNAzyme cleaved DNA4 to release the G-quadruplex that was locked in the stem of DNA4. Finally, N-methyl mesoporphyrin IX (NMM) was inserted into the released G-quadruplex structure and the fluorescence signal was turned on. Taking nuclear factor-κB p50 (NF-κB p50) as the model, the limit of detection was low to 0.14 nM. Furthermore, the sequence-specific recognition of NF-κB p50 with DNA displayed excellent selectivity and specificity. The results in present work showed that this strategy will be a promising tool for DNA-binding proteins analysis in biomedical exploration and clinical diagnosis.
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Affiliation(s)
- Chao Huang
- Key Laboratory of Chemical Biology, Ministry of Education, School of Pharmacy, Cheeloo College of Medicine, Shandong University, Jinan, 250012, PR China
| | - Xiaowen Xu
- School of Chemistry and Chemical Engineering, Shandong University, 250100, Jinan, PR China
| | - Dafeng Jiang
- Department of Physical and Chemical Testing, Shandong Center for Food Safety Risk Assessment, Shandong Center for Disease Control and Prevention, 250014, Jinan, PR China.
| | - Wei Jiang
- Key Laboratory of Chemical Biology, Ministry of Education, School of Pharmacy, Cheeloo College of Medicine, Shandong University, Jinan, 250012, PR China; School of Chemistry and Chemical Engineering, Shandong University, 250100, Jinan, PR China.
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5
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Li B, Xie S, Xia A, Suo T, Huang H, Zhang X, Chen Y, Zhou X. Recent advance in the sensing of biomarker transcription factors. Trends Analyt Chem 2020. [DOI: 10.1016/j.trac.2020.116039] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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6
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Zhang Y, Li QN, Xiang DX, Zhou K, Xu Q, Zhang CY. Development of a bidirectional isothermal amplification strategy for the sensitive detection of transcription factors in cancer cells. Chem Commun (Camb) 2020; 56:8952-8955. [DOI: 10.1039/d0cc03134h] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We develop a bidirectional isothermal amplification strategy for the sensitive detection of transcription factors in cancer cells.
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Affiliation(s)
- Yan Zhang
- College of Chemistry
- Chemical Engineering and Materials Science
- Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong
- Key Laboratory of Molecular and Nano Probes
- Ministry of Education
| | - Qing-nan Li
- College of Chemistry
- Chemical Engineering and Materials Science
- Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong
- Key Laboratory of Molecular and Nano Probes
- Ministry of Education
| | - Dong-xue Xiang
- College of Chemistry
- Chemical Engineering and Materials Science
- Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong
- Key Laboratory of Molecular and Nano Probes
- Ministry of Education
| | - Kaiyue Zhou
- School of Food and Biological Engineering
- Shanxi University of Science and Technology
- Xi’an 710021
- P. R. China
| | - Qinfeng Xu
- School of Food and Biological Engineering
- Shanxi University of Science and Technology
- Xi’an 710021
- P. R. China
| | - Chun-yang Zhang
- College of Chemistry
- Chemical Engineering and Materials Science
- Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong
- Key Laboratory of Molecular and Nano Probes
- Ministry of Education
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7
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Recent development of nucleic acid nanosensors to detect sequence-specific binding interactions: From metal ions, small molecules to proteins and pathogens. SENSORS INTERNATIONAL 2020; 1:100034. [PMID: 34766041 PMCID: PMC7434487 DOI: 10.1016/j.sintl.2020.100034] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/28/2020] [Revised: 08/13/2020] [Accepted: 08/13/2020] [Indexed: 02/07/2023] Open
Abstract
DNA carries important genetic instructions and plays vital roles in regulating biological activities in living cells. Proteins such as transcription factors binds to DNA to regulate the biological functions of DNA, and similarly many drug molecules also bind to DNA to modulate its functions. Due to the importance of protein-DNA and drug-DNA binding, there has been intense effort in developing novel nanosensors in the same length scale as DNA, to effectively study these binding interactions in details. In addition, aptamers can be artificially selected to detect metal ions and pathogens such as bacteria and viruses, making nucleic acid nanosensors more versatile in detecting a large variety of analytes. In this minireview, we first explained the different types and binding modes of protein-DNA and drug-DNA interactions in the biological systems, as well as aptamer-target binding. This was followed by the review of five types of nucleic acid nanosensors based on optical or electrochemical detection. The five types of nucleic acid nanosensors utilizing colorimetric, dynamic light scattering (DLS), surface-enhanced Raman spectroscopy (SERS), fluorescence and electrochemical detections have been recently developed to tackle some of the challenges in high-throughput screening technology for large scale analysis, which is especially useful for drug development and mass screening for pandemic outbreak such as SARS or COVID-19.
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8
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Sabury S, Collier GS, Ericson MN, Kilbey SM. Synthesis of a soluble adenine-functionalized polythiophene through direct arylation polymerization and its fluorescence responsive behavior. Polym Chem 2020. [DOI: 10.1039/c9py01142k] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An adenine-functionalized polythiophene is synthesized via direct arylation polymerization using Boc-protection to overcome catalyst deactivation. The resulting copolymer is highly soluble and shows reversible fluorescence quenching.
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Affiliation(s)
- Sina Sabury
- Department of Chemistry
- University of Tennessee
- Knoxville
- USA
| | - Graham S. Collier
- Department of Chemistry
- University of Tennessee
- Knoxville
- USA
- School of Chemistry and Biochemistry
| | - M. Nance Ericson
- Electrical and Electronics Systems Research Division
- Oak Ridge National Laboratory
- Oak Ridge
- USA
| | - S. Michael Kilbey
- Department of Chemistry
- University of Tennessee
- Knoxville
- USA
- Department of Chemical and Biomolecular Engineering
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9
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Zeglio E, Rutz AL, Winkler TE, Malliaras GG, Herland A. Conjugated Polymers for Assessing and Controlling Biological Functions. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2019; 31:e1806712. [PMID: 30861237 DOI: 10.1002/adma.201806712] [Citation(s) in RCA: 91] [Impact Index Per Article: 18.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/16/2018] [Revised: 01/15/2019] [Indexed: 05/20/2023]
Abstract
The field of organic bioelectronics is advancing rapidly in the development of materials and devices to precisely monitor and control biological signals. Electronics and biology can interact on multiple levels: organs, complex tissues, cells, cell membranes, proteins, and even small molecules. Compared to traditional electronic materials such as metals and inorganic semiconductors, conjugated polymers (CPs) have several key advantages for biological interactions: tunable physiochemical properties, adjustable form factors, and mixed conductivity (ionic and electronic). Herein, the use of CPs in five biologically oriented research topics, electrophysiology, tissue engineering, drug release, biosensing, and molecular bioelectronics, is discussed. In electrophysiology, implantable devices with CP coating or CP-only electrodes are showing improvements in signal performance and tissue interfaces. CP-based scaffolds supply highly favorable static or even dynamic interfaces for tissue engineering. CPs also enable delivery of drugs through a variety of mechanisms and form factors. For biosensing, CPs offer new possibilities to incorporate biological sensing elements in a conducting matrix. Molecular bioelectronics is today used to incorporate (opto)electronic functions in living tissue. Under each topic, the limits of the utility of CPs are discussed and, overall, the major challenges toward implementation of CPs and their devices to real-world applications are highlighted.
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Affiliation(s)
- Erica Zeglio
- School of Materials Science and Engineering, UNSW Sydney, Sydney, NSW, 2052, Australia
- Department of Micro and Nanosystems, KTH Royal Institute of Technology, 10044, Stockholm, Sweden
| | - Alexandra L Rutz
- Electrical Engineering Division, Department of Engineering, University of Cambridge, 9 JJ Thomson Ave., Cambridge, CB3 0FA, UK
| | - Thomas E Winkler
- Department of Micro and Nanosystems, KTH Royal Institute of Technology, 10044, Stockholm, Sweden
| | - George G Malliaras
- Electrical Engineering Division, Department of Engineering, University of Cambridge, 9 JJ Thomson Ave., Cambridge, CB3 0FA, UK
| | - Anna Herland
- Department of Micro and Nanosystems, KTH Royal Institute of Technology, 10044, Stockholm, Sweden
- Swedish Medical Nanoscience Center, Department of Neuroscience, Karolinska Institute, 17177, Stockholm, Sweden
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10
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Qin Y, Li D, Yuan R, Xiang Y. Silver ion-stabilized DNA triplexes for completely enzyme-free and sensitive fluorescence detection of transcription factors via catalytic hairpin assembly amplification. J Mater Chem B 2019; 7:763-767. [DOI: 10.1039/c8tb03042a] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A new silver ion-stabilized DNA triplex enables enzyme-free and amplified sensitive fluorescence detection of transcription factors.
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Affiliation(s)
- Yao Qin
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry
- Ministry of Education
- School of Chemistry and Chemical Engineering
- Southwest University
- Chongqing 400715
| | - Daxiu Li
- 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
| | - Yun Xiang
- 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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11
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Huang X, Zhang Y, Xu W, Xu W, Guo L, Qiu B, Lin Z. An ultrasensitive electrochemiluminescence biosensor for nuclear factor kappa B p50 based on the proximity hybridization-induced hybridization chain reaction. Chem Commun (Camb) 2019; 55:12980-12983. [DOI: 10.1039/c9cc06210f] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Nuclear factor kappa B p50 (NF-κB p50) induces various biological processes.
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Affiliation(s)
- Xiaocui Huang
- Ministry of Education Key Laboratory for Analytical Science of Food Safety and Biology
- Fujian Provincial Key Laboratory of Analysis and Detection for Food Safety
- College of Chemistry
- Fuzhou University
- Fuzhou
| | - Ying Zhang
- Ministry of Education Key Laboratory for Analytical Science of Food Safety and Biology
- Fujian Provincial Key Laboratory of Analysis and Detection for Food Safety
- College of Chemistry
- Fuzhou University
- Fuzhou
| | - Wen Xu
- Department of Pharmacy
- Fujian University of Traditional Chinese Medicine
- Fuzhou
- China
| | - Wei Xu
- Department of Pharmacy
- Fujian University of Traditional Chinese Medicine
- Fuzhou
- China
| | - Longhua Guo
- Ministry of Education Key Laboratory for Analytical Science of Food Safety and Biology
- Fujian Provincial Key Laboratory of Analysis and Detection for Food Safety
- College of Chemistry
- Fuzhou University
- Fuzhou
| | - Bin Qiu
- Ministry of Education Key Laboratory for Analytical Science of Food Safety and Biology
- Fujian Provincial Key Laboratory of Analysis and Detection for Food Safety
- College of Chemistry
- Fuzhou University
- Fuzhou
| | - Zhenyu Lin
- Ministry of Education Key Laboratory for Analytical Science of Food Safety and Biology
- Fujian Provincial Key Laboratory of Analysis and Detection for Food Safety
- College of Chemistry
- Fuzhou University
- Fuzhou
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12
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Affiliation(s)
- Teresa L. Mako
- Department of Chemistry, University of Rhode Island, 140 Flagg Road, Kingston, Rhode Island 02881, United States
| | - Joan M. Racicot
- Department of Chemistry, University of Rhode Island, 140 Flagg Road, Kingston, Rhode Island 02881, United States
| | - Mindy Levine
- Department of Chemistry, University of Rhode Island, 140 Flagg Road, Kingston, Rhode Island 02881, United States
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13
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Xu X, Wang L, Zhu D, Wang Y, Jiang W. Protein binding protection in combination with DNA masking for sensitive and reliable transcription factor detection. Talanta 2018; 186:293-298. [DOI: 10.1016/j.talanta.2018.04.047] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2018] [Revised: 04/04/2018] [Accepted: 04/15/2018] [Indexed: 10/17/2022]
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14
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Rasheed PA, Lee JS. Ultrasensitive colorimetric detection of NF-κB protein at picomolar levels using target-induced passivation of nanoparticles. Anal Bioanal Chem 2017; 410:1397-1403. [PMID: 29222653 DOI: 10.1007/s00216-017-0783-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2017] [Revised: 10/23/2017] [Accepted: 11/23/2017] [Indexed: 01/04/2023]
Abstract
We developed a highly sensitive and selective sensor based on the nanoprobe conjugates of catalytic nanoparticles and double-stranded DNA (dsDNA) for the colorimetric detection of NF-κB protein. The sensing mechanism takes advantage of the catalytic activity of nanoparticle surfaces and the specific binding of NF-κB to a dsDNA sequence. In the presence of NF-κB, the highly selective interactions between dsDNA and NF-κB lead to the passivation of the catalytic nanoparticle surfaces, impeding the sodium borohydride-mediated reduction rate of 4-nitrophenol. The correlation between the NF-κB concentration and the visualized reduction rate of 4-nitrophenol from yellow to colorless clearly demonstrates the highly quantitative nature of the sensor. Importantly, this sensor can conclusively detect concentrations as low as 6.39 pM of NF-κB, which to best of our knowledge is the lowest limit of detection for a colorimetric NF-κB detection system. The excellent sensitivity of this sensor relies on the high binding constant of NF-κB to dsDNA and the catalytic activity of nanoparticle surfaces for the signal amplification. This sensor allows visual detection without the need for any spectrometric instrumentation. We also determined the various parameters such as the pH, temperature, incubation time, and salt concentration for optimal NF-κB-dsDNA interactions. Finally, we demonstrated the performance of the sensor with simulated sample analysis. Graphical abstract A highly sensitive and selective colorimetric detection of protein NF-κB using the nanoprobeconjugates of catalytic gold nanoparticles and double-stranded DNA (dsDNA) has been developed.
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Affiliation(s)
- P Abdul Rasheed
- Department of Materials Science and Engineering, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul, 02841, Republic of Korea
| | - Jae-Seung Lee
- Department of Materials Science and Engineering, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul, 02841, Republic of Korea.
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15
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Zhang K, Wang L, Zhao H, Jiang W. Target binding protection mediated rolling circle amplification for sensitive detection of transcription factors. Talanta 2017; 179:331-336. [PMID: 29310240 DOI: 10.1016/j.talanta.2017.11.028] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2017] [Revised: 10/27/2017] [Accepted: 11/16/2017] [Indexed: 12/12/2022]
Abstract
Transcription factors (TFs) play central roles in the regulation of gene expression by binding with specific DNA sequences. As a potential diagnostic marker, sensitive detection of TFs is essential for pharmacological research development and clinical disease diagnosis. Here, a new fluorescent method based on target binding protection mediated rolling circle amplification (RCA) was developed for TFs detection. A hairpin probe with recognition site for target binding, cleavage site for Nt.BbvCI digestion and two hanging DNA strands with part of G-quadruplex complementary sequences for signal output was designed. Moreover, the hairpin probe could serve as template of RCA after being ligated. Firstly, TFs bound with hairpin probes and protected signal complementary sequences against cleavage by Nt.BbvCI due to space hindrance effect, while the excess hairpin probes were effectively digested to avoid false positive signal. Then, TFs and Nt.BbvCI were dissociated from hairpin probes by heating, complete hairpin probes being preserved. Next, protected hairpin probes were specifically connected to dumbbell templates under the action of T4 DNA ligase. Subsequently, dumbbell templates hybridized with primer to initiate the RCA reaction, obtaining numerous G-quadruplex sequences. Finally, N-methyl-mesoporphyrin IX (NMM) bound with G-quadruplex to generate enhanced fluorescence signal. The proposed assay system achieved excellent specificity and sensitivity toward TATA-binding protein (TBP) with a detection limit as low as 88pM, and with a linear range from 100pM to 40nM. The strategy proposed here was looking forward to offer a powerful tool for TFs related bioanalysis and disease diagnostics.
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Affiliation(s)
- Kaili Zhang
- Key Laboratory for Colloid and Interface Chemistry of Education Ministry, School of Chemistry and Chemical Engineering, Shandong University, 250100 Jinan, PR China
| | - Lei Wang
- School of Pharmaceutical Sciences, Shandong University, 250012 Jinan, PR China
| | - Haiyan Zhao
- Key Laboratory for Colloid and Interface Chemistry of Education Ministry, School of Chemistry and Chemical Engineering, Shandong University, 250100 Jinan, PR China
| | - Wei Jiang
- Key Laboratory for Colloid and Interface Chemistry of Education Ministry, School of Chemistry and Chemical Engineering, Shandong University, 250100 Jinan, PR China.
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16
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Zhu D, Wang L, Xu X, Jiang W. Colocalization recognition-activated cascade signal amplification strategy for ultrasensitive detection of transcription factors. Biosens Bioelectron 2017; 89:978-983. [DOI: 10.1016/j.bios.2016.09.073] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2016] [Revised: 09/15/2016] [Accepted: 09/21/2016] [Indexed: 01/10/2023]
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17
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Huang Z, Jiang Z, Zhao C, Han W, Lin L, Liu A, Weng S, Lin X. Simple and effective label-free electrochemical immunoassay for carbohydrate antigen 19-9 based on polythionine-Au composites as enhanced sensing signals for detecting different clinical samples. Int J Nanomedicine 2017; 12:3049-3058. [PMID: 28450781 PMCID: PMC5399979 DOI: 10.2147/ijn.s131805] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Carbohydrate antigen 19-9 (CA19-9) is an important biomarker for the early diagnosis and clinical monitoring of pancreatic cancer. Reliable, simple, and accurate methods for the detection of CA19-9 are still urgently needed. In this study, polythionine-Au composites (AuNPs@ PThi) were designed and prepared through one-pot reaction using HAuCl4 as the co-oxidant and raw material in thionine solution containing FeCl3 as the oxidant. AuNPs@PThi-immobilized glassy carbon electrode was used as a sensitive redox probe for electrochemical interface. AuNPs@PThi not only favored the amplification of electrochemical signals but also facilitated excellent environmental friendliness for bioassay. Maximizing the electrochemical properties of AuNPs@PThi, an effective label-free electrochemical immunoassay for the ultrasensitive and reliable detection of CA19-9 was developed. Under optimal conditions, the linear range of the proposed immunosensor was estimated to range from 6.5 to 520 U/mL, with a detection limit of 0.26 U/mL at a signal-to-noise ratio of 3. The prepared immunosensor for CA19-9 detection showed high sensitivity, stability, and reproducibility. Furthermore, the fabricated immunosensor based on AuNPs@PThi can effectively detect and distinguish clinical serum samples of pancreatic cancer and normal control with accuracy and convenience.
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Affiliation(s)
- Zhengjun Huang
- Department of Pharmaceutical Analysis, School of Pharmacy, Fujian Medical University
- Higher Educational Key Laboratory for Nano Biomedical Technology of Fujian Province
| | - Zhouqian Jiang
- Department of Pharmaceutical Analysis, School of Pharmacy, Fujian Medical University
- Higher Educational Key Laboratory for Nano Biomedical Technology of Fujian Province
| | - Chengfei Zhao
- Department of Pharmaceutical Analysis, School of Pharmacy, Fujian Medical University
- Higher Educational Key Laboratory for Nano Biomedical Technology of Fujian Province
| | - Wendi Han
- Department of Pharmacy, The First Affiliated Hospital of Fujian Medical University, Fuzhou, People’s Republic of China
| | - Liqing Lin
- Department of Pharmaceutical Analysis, School of Pharmacy, Fujian Medical University
- Higher Educational Key Laboratory for Nano Biomedical Technology of Fujian Province
- Correspondence: Liqing Lin; Shaohuang Weng, Department of Pharmaceutical Analysis, School of Pharmacy, Fujian Medical University, 1 North Xuefu Road, Fuzhou, Fujian 350122, People’s Republic of China, Tel/fax +86 591 2286 2016, Email ;
| | - Ailin Liu
- Department of Pharmaceutical Analysis, School of Pharmacy, Fujian Medical University
- Higher Educational Key Laboratory for Nano Biomedical Technology of Fujian Province
| | - Shaohuang Weng
- Department of Pharmaceutical Analysis, School of Pharmacy, Fujian Medical University
- Higher Educational Key Laboratory for Nano Biomedical Technology of Fujian Province
- Correspondence: Liqing Lin; Shaohuang Weng, Department of Pharmaceutical Analysis, School of Pharmacy, Fujian Medical University, 1 North Xuefu Road, Fuzhou, Fujian 350122, People’s Republic of China, Tel/fax +86 591 2286 2016, Email ;
| | - Xinhua Lin
- Department of Pharmaceutical Analysis, School of Pharmacy, Fujian Medical University
- Higher Educational Key Laboratory for Nano Biomedical Technology of Fujian Province
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18
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Sha L, Zhang X, Wang G. A label-free and enzyme-free ultra-sensitive transcription factors biosensor using DNA-templated copper nanoparticles as fluorescent indicator and hairpin DNA cascade reaction as signal amplifier. Biosens Bioelectron 2016; 82:85-92. [DOI: 10.1016/j.bios.2016.03.066] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2016] [Revised: 03/23/2016] [Accepted: 03/25/2016] [Indexed: 11/30/2022]
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19
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Yuan H, Fan Y, Xing C, Niu R, Chai R, Zhan Y, Qi J, An H, Xu J. Conjugated Polymer-Based Hybrid Materials for Turn-On Detection of CO2 in Plant Photosynthesis. Anal Chem 2016; 88:6593-7. [DOI: 10.1021/acs.analchem.6b01489] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Hongbo Yuan
- School of Materials Science and Engineering, Hebei University of Technology, Tianjin 300401, P.R. China
- Institute for Molecules and Materials, Radboud University, Heyendaalseweg 135, 6525 AJ Nijmegen, The Netherlands
| | - Yibing Fan
- Institute of Biophysics, Hebei University of Technology, Tianjin 300401, P.R. China
| | - Chengfen Xing
- Institute of Biophysics, Hebei University of Technology, Tianjin 300401, P.R. China
| | - Ruimin Niu
- Institute of Biophysics, Hebei University of Technology, Tianjin 300401, P.R. China
| | - Ran Chai
- School of Materials Science and Engineering, Hebei University of Technology, Tianjin 300401, P.R. China
| | - Yong Zhan
- School of Materials Science and Engineering, Hebei University of Technology, Tianjin 300401, P.R. China
| | - Junjie Qi
- Institute of Biophysics, Hebei University of Technology, Tianjin 300401, P.R. China
| | - Hailong An
- Institute of Biophysics, Hebei University of Technology, Tianjin 300401, P.R. China
| | - Jialiang Xu
- Institute for Molecules and Materials, Radboud University, Heyendaalseweg 135, 6525 AJ Nijmegen, The Netherlands
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20
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Study on DNA damage induced by the reactive oxygen species generated in situ based on the multi-walled carbon nanotubes and hemoglobin. J Electroanal Chem (Lausanne) 2016. [DOI: 10.1016/j.jelechem.2016.02.030] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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21
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Li K, Wang L, Xu X, Gao T, Yan P, Jiang W. Protein binding-protected DNA three-way junction-mediated rolling circle amplification for sensitive and specific detection of transcription factors. RSC Adv 2016. [DOI: 10.1039/c6ra12535b] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
A novel fluorescent strategy for transcription factors assay was developed based on protein binding-protected DNA three-way junction-mediated rolling circle amplification.
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Affiliation(s)
- Kan Li
- Key Laboratory for Colloid and Interface Chemistry of Education Ministry
- School of Chemistry and Chemical Engineering
- Shandong University
- 250100 Jinan
- P. R. China
| | - Lei Wang
- School of Pharmaceutical Sciences
- Shandong University
- 250012 Jinan
- P. R. China
| | - Xiaowen Xu
- Key Laboratory for Colloid and Interface Chemistry of Education Ministry
- School of Chemistry and Chemical Engineering
- Shandong University
- 250100 Jinan
- P. R. China
| | - Ting Gao
- Key Laboratory for Colloid and Interface Chemistry of Education Ministry
- School of Chemistry and Chemical Engineering
- Shandong University
- 250100 Jinan
- P. R. China
| | - Ping Yan
- Jinan Maternity and Child Care Hospital
- 250001 Jinan
- P. R. China
| | - Wei Jiang
- Key Laboratory for Colloid and Interface Chemistry of Education Ministry
- School of Chemistry and Chemical Engineering
- Shandong University
- 250100 Jinan
- P. R. China
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22
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Zhang Y, Ma F, Tang B, Zhang CY. Recent advances in transcription factor assays in vitro. Chem Commun (Camb) 2016; 52:4739-48. [DOI: 10.1039/c5cc09891b] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
We review the recent advances in transcription factor assaysin vitroand highlight the emerging trends as well.
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Affiliation(s)
- Yan Zhang
- College of Chemistry
- Chemical Engineering and Materials Science
- Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong
- Key Laboratory of Molecular and Nano Probes
- Ministry of Education
| | - Fei Ma
- College of Chemistry
- Chemical Engineering and Materials Science
- Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong
- Key Laboratory of Molecular and Nano Probes
- Ministry of Education
| | - Bo Tang
- College of Chemistry
- Chemical Engineering and Materials Science
- Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong
- Key Laboratory of Molecular and Nano Probes
- Ministry of Education
| | - Chun-yang Zhang
- College of Chemistry
- Chemical Engineering and Materials Science
- Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong
- Key Laboratory of Molecular and Nano Probes
- Ministry of Education
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23
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Fok I cleavage–inhibition strategy for the specific and accurate detection of transcription factors. Talanta 2015; 144:44-50. [DOI: 10.1016/j.talanta.2015.05.032] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2015] [Revised: 05/10/2015] [Accepted: 05/12/2015] [Indexed: 01/23/2023]
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24
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Huang Y, Song C, Li H, Zhang R, Jiang R, Liu X, Zhang G, Fan Q, Wang L, Huang W. Cationic Conjugated Polymer/Hyaluronan-Doxorubicin Complex for Sensitive Fluorescence Detection of Hyaluronidase and Tumor-Targeting Drug Delivery and Imaging. ACS APPLIED MATERIALS & INTERFACES 2015; 7:21529-21537. [PMID: 26331442 DOI: 10.1021/acsami.5b06799] [Citation(s) in RCA: 43] [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
Hyaluronidase (HAase) is becoming a new type of tumor marker since it has been demonstrated to be overexpressed in various kinds of cancer cells. In this study, we described a novel fluorescence method for sensitive, rapid, and convenient HAase detection and tumor-targeting drug delivery and imaging, using a probe prepared by electrostatic assembly of a cationic conjugated polymer (CCP) and anionic hyaluronan (HA) conjugated with the anticancer drug doxorubicin (Dox). The CCP we used was poly{[9,9-bis(6'-(N,N,N-diethylmethylammonium)hexyl)-2,7-fluorenylene ethynylene]-alt-co-[2,5-bis(3'-(N,N,N-diethylmethylammonium)-1'-oxapropyl)-1,4-phenylene]} tetraiodide (PFEP). HA is a natural mucopolysaccharide that can be hydrolyzed by HAase into fragments with low molecular weights. In the PFEP/HA-Dox complex, the fluorescence of PFEP was efficiently quenched due to electron transfer from PFEP to Dox. After the PFEP/HA-Dox complex was exposed to HAase or was taken up by cancer cells through the specific binding between HA and CD44 receptor, HA was degraded by HAase to release the Dox, leading to the recovery of PFEP fluorescence to the "turn-on" state. Moreover, the degree of fluorescence recovery was quantitatively correlated with the concentrations of HAase. Compared with many previously reported methods, our work did not require laborious multiple modifications of HA that may affect the activity of HAase. This point, combined with the excellent optoelectronic property of conjugated polymer, endowed this method with high sensitivity (detection limit: 0.075 U/mL), high specificity, and rapid response, making it applicable for reliable and routine detection of HAase. This fluorescent probe was successfully utilized to detect HAase levels in human urine samples; furthermore, it can also be employed as a multifunctional system by realizing tumor-targeting drug delivery and cell imaging simultaneously. The development of this fluorescence method showed promising potential for early tumor diagnosis and therapy based on HAase detection.
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Affiliation(s)
- Yanqin Huang
- Key Laboratory for Organic Electronics & Information Displays (KLOEID) and Institute of Advanced Materials (IAM), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing University of Posts & Telecommunications , Nanjing 210023, China
| | - Caixia Song
- Key Laboratory for Organic Electronics & Information Displays (KLOEID) and Institute of Advanced Materials (IAM), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing University of Posts & Telecommunications , Nanjing 210023, China
| | - Huichang Li
- Key Laboratory for Organic Electronics & Information Displays (KLOEID) and Institute of Advanced Materials (IAM), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing University of Posts & Telecommunications , Nanjing 210023, China
| | - Rui Zhang
- Department of Ophthalmology, Zhongda Hospital, Southeast University , Nanjing 211189, China
| | - Rongcui Jiang
- Key Laboratory for Organic Electronics & Information Displays (KLOEID) and Institute of Advanced Materials (IAM), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing University of Posts & Telecommunications , Nanjing 210023, China
| | - Xingfen Liu
- Key Laboratory for Organic Electronics & Information Displays (KLOEID) and Institute of Advanced Materials (IAM), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing University of Posts & Telecommunications , Nanjing 210023, China
| | - Guangwei Zhang
- Key Laboratory for Organic Electronics & Information Displays (KLOEID) and Institute of Advanced Materials (IAM), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing University of Posts & Telecommunications , Nanjing 210023, China
| | - Quli Fan
- Key Laboratory for Organic Electronics & Information Displays (KLOEID) and Institute of Advanced Materials (IAM), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing University of Posts & Telecommunications , Nanjing 210023, China
| | - Lianhui Wang
- Key Laboratory for Organic Electronics & Information Displays (KLOEID) and Institute of Advanced Materials (IAM), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing University of Posts & Telecommunications , Nanjing 210023, China
| | - Wei Huang
- Key Laboratory for Organic Electronics & Information Displays (KLOEID) and Institute of Advanced Materials (IAM), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing University of Posts & Telecommunications , Nanjing 210023, China
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University (NanjingTech) , 30 South Puzhu Road, Nanjing 211816, China
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25
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Liu X, Hua X, Fan Q, Chao J, Su S, Huang YQ, Wang L, Huang W. Thioflavin T as an Efficient G-Quadruplex Inducer for the Highly Sensitive Detection of Thrombin Using a New Föster Resonance Energy Transfer System. ACS APPLIED MATERIALS & INTERFACES 2015; 7:16458-16465. [PMID: 26173915 DOI: 10.1021/acsami.5b03662] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
We report a new Föster resonance energy transfer (FRET) system that uses a special dye, thioflavin T (ThT), as an energy acceptor and a water-soluble conjugated polymer (CP) with high fluorescence as an energy donor. A simple, label-free, and sensitive strategy for the detection of thrombin in buffer and in diluted serum was designed based on this new system using ThT as an efficient inducer of the G-quadruplex. The difference between the blank and the positive samples was amplified due to distinctive FRET signals because thrombin has little effect on the intercalation of ThT into the G-quadruplex. In the absence of the target, ThT induces the aptamer to form a G-quadruplex and intercalates into it with strong fluorescence. The electrostatic attractions between the negatively charged G-quadruplex and positively charged CP allow a short donor-acceptor distance, resulting in a high FRET signal. However, in the presence of the target, the aptamer forms a G-quadruplex-thrombin complex first, followed by the intercalation of ThT into the G-quadruplex. A long distance exists between the donor and acceptor due to the strong steric hindrance from the large-sized thrombin, which leads to a low FRET signal. Compared with previously reported strategies based on the FRET between the CP and dye, our strategy is label-free, and the sensitivity was improved by an order of magnitude. Our strategy also shows the advantages of being simple, rapid (about 50 min), sensitive, label-free, and low-cost in comparison to strategies based on the FRET between quantum dots and dyes.
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26
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Zhao W, Qin Z, Zhang C, Zhao M, Luo H. A label-free double-amplification system for sensitive detection of single-stranded DNA and thrombin by liquid chromatography-mass spectrometry. Chem Commun (Camb) 2015; 50:9846-8. [PMID: 25025531 DOI: 10.1039/c4cc03559c] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A label-free double amplification system has been developed by using a ternary DNA probe containing the poly(adenine-thymine) sequence assisted by exonuclease III degradation. The method achieved more than 600-fold signal amplification and allowed sensitive detection of single-stranded DNA and thrombin at the pM level by using liquid chromatography/mass spectrometry.
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Affiliation(s)
- Wenbo Zhao
- Beijing National Laboratory for Molecular Sciences, MOE Key Laboratory of Bioorganic Chemistry and Molecular Engineering, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China.
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27
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Lee S, Jo H, Her J, Lee HY, Ban C. Ultrasensitive electrochemical detection of engrailed-2 based on homeodomain-specific DNA probe recognition for the diagnosis of prostate cancer. Biosens Bioelectron 2015; 66:32-8. [DOI: 10.1016/j.bios.2014.11.003] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2014] [Revised: 11/01/2014] [Accepted: 11/03/2014] [Indexed: 12/13/2022]
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28
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Li C, Qiu X, Hou Z, Deng K. A dumbell probe-mediated rolling circle amplification strategy for highly sensitive transcription factor detection. Biosens Bioelectron 2015; 64:505-10. [DOI: 10.1016/j.bios.2014.09.068] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2014] [Revised: 09/21/2014] [Accepted: 09/23/2014] [Indexed: 10/24/2022]
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29
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Jiang B, Wang M, Li F, Yu L, Xie J. Multiplexed electrochemical coding of DNA–protein bindings. Biosens Bioelectron 2015; 64:429-33. [DOI: 10.1016/j.bios.2014.09.051] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2014] [Revised: 08/16/2014] [Accepted: 09/22/2014] [Indexed: 01/06/2023]
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30
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Water-soluble hyperbranched poly(phenyleneethynylene)s: Facile synthesis, characterization, and interactions with dsDNA. POLYMER 2015. [DOI: 10.1016/j.polymer.2014.12.068] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
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31
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Zhou R, Xu C, Dong J, Wang G. Labeling-free fluorescent detection of DNA hybridization through FRET from pyrene excimer to DNA intercalator SYBR green I. Biosens Bioelectron 2014; 65:103-7. [PMID: 25461145 DOI: 10.1016/j.bios.2014.10.029] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2014] [Revised: 10/08/2014] [Accepted: 10/13/2014] [Indexed: 01/22/2023]
Abstract
A novel labeling-free fluorescence complex probe has been developed for DNA hybridization detection based on fluorescence resonance energy transfer (FRET) mechanism from pyrene excimer of pyrene-functionalized poly [2-(N, N-dimethylamino) ethyl methacrylate] (PFP) to SYBR Green I (SG, a specific intercalator of double-stranded DNA) in a cost-effective, rapid and simple manner. The complex probe consists of the positively charged PFP, SG and negatively charged single-stranded DNA (ssDNA). Upon adding a complementary strand to the complex probe solution, double-stranded DNA (dsDNA) was formed, followed by the intercalation of SG into dsDNA. The pyrene excimer emission was overlapped with the absorption of SG very well and the electrostatic interactions between PFP and dsDNA kept them in close proximity, enabling efficient FRET from pyrene excimer to SG. The fluorescence of SG in the duplex DNA resulting from FRET can be successfully applied to detect DNA hybridization with high sensitivity for a very low detection limit of 10nM and excellent selectivity for detection of single base pair mismatch.
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Affiliation(s)
- Ruyi Zhou
- School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Chen Xu
- School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Jie Dong
- School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Guojie Wang
- School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China.
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32
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Huang Y, Yao X, Zhang R, Ouyang L, Jiang R, Liu X, Song C, Zhang G, Fan Q, Wang L, Huang W. Cationic conjugated polymer/fluoresceinamine-hyaluronan complex for sensitive fluorescence detection of CD44 and tumor-targeted cell imaging. ACS APPLIED MATERIALS & INTERFACES 2014; 6:19144-19153. [PMID: 25278260 DOI: 10.1021/am505113p] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Simple, rapid, and sensitive detection of CD44 is of paramount importance since it plays pivotal roles in tumor initiation, growth and metastasis. Herein, we describe a novel method for sensitive, visual and facile fluorescence detection of CD44 and CD44-mediated cancer cell imaging, using a probe based on cationic conjugated polymer (CCP)-PFEP and fluoresceinamine-hyaluronan (FA-HA). HA is an anionic natural glycosaminoglycan that can specifically bind to the overexpressed CD44 on various kinds of cancer cells. PFEP and FA-HA formed a complex through electronic interactions, resulting in a highly efficient fluorescence resonance energy transfer (FRET) from PFEP to FA-HA; moreover, the efficiencies of FRET correlated with the concentrations of CD44 because the specific binding of HA-CD44 would separate FA-HA away from PFEP. This method did not require laborious and expensive dual-labeling or protein-labeling needed in previously reported detection methods of CD44. Just mix the sample and test solution containing the PFEP/FA-HA complex, and the results allowed naked-eye detection by observing fluorescent color of solutions with the assistance of a UV lamp. Most importantly, the use of a conjugated polymer with excellent amplification property as well as the specific binding of HA-CD44 endowed this method with high sensitivity and specificity, making it applicable for reliable quantitative detection of CD44. Furthermore, the PFEP/FA-HA complex formed nanoparticles in aqueous solution, and the nanoparticles can be selectively taken up by MCF-7 cells (cancer cell) through the HA-CD44 interaction, thereby giving rise to a dual-color tumor-targeted imaging probe with good photostability. The development of this fluorescent probe showed promising potential to make a reliable and routine method available for early diagnosis of cancer.
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Affiliation(s)
- Yanqin Huang
- Key Laboratory for Organic Electronics & Information Displays (KLOEID) and Institute of Advanced Materials (IAM), Nanjing University of Posts & Telecommunications , Nanjing 210023, China
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33
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Zhang Y, Liu F, Nie J, Jiang F, Zhou C, Yang J, Fan J, Li J. An electrochemical sensing platform based on local repression of electrolyte diffusion for single-step, reagentless, sensitive detection of a sequence-specific DNA-binding protein. Analyst 2014; 139:2193-8. [PMID: 24647581 DOI: 10.1039/c4an00096j] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In this paper, we report for the first time an electrochemical biosensor for single-step, reagentless, and picomolar detection of a sequence-specific DNA-binding protein using a double-stranded, electrode-bound DNA probe terminally modified with a redox active label close to the electrode surface. This new methodology is based upon local repression of electrolyte diffusion associated with protein-DNA binding that leads to reduction of the electrochemical response of the label. In the proof-of-concept study, the resulting electrochemical biosensor was quantitatively sensitive to the concentrations of the TATA binding protein (TBP, a model analyte) ranging from 40 pM to 25.4 nM with an estimated detection limit of ∼10.6 pM (∼80 to 400-fold improvement on the detection limit over previous electrochemical analytical systems).
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Affiliation(s)
- Yun Zhang
- College of Chemistry and Bioengineering, Guilin University of Technology, Guilin 541004, China.
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34
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Liu X, Shi L, Hua X, Huang Y, Su S, Fan Q, Wang L, Huang W. Target-induced conjunction of split aptamer fragments and assembly with a water-soluble conjugated polymer for improved protein detection. ACS APPLIED MATERIALS & INTERFACES 2014; 6:3406-3412. [PMID: 24512085 DOI: 10.1021/am405550j] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Rapid and sensitive detection of proteins is crucial to biomedical research as well as clinical diagnosis. However, so far, most detection methods rely on antibody-based assays and are usually laborious and time-consuming, with poor sensitivity. Herein, we developed a simple and sensitive fluorescence-based strategy for protein detection by using split aptamer fragments and a water-soluble polycationic polymer (poly{[9,9-bis(6'-(N,N,N-diethylmethylammonium)hexyl)-2,7-fluorenylene ethynylene]-alt-co-[2,5-bis(3'-(N,N,N-diethylmethylammonium)-1'-oxapropyl)-1,4-phenylene] tetraiodide} (PFEP)). The thrombin-binding DNA aptamer was split into two fragments for target recognition. The PFEP with high fluorescence emission was used as energy donor to amplify the signal of dye-labeled DNA probe. In the absence of target, three DNA/PFEP complexes were formed via strong electrostatic interactions, resulting in efficient Föster resonance energy transfer (FRET) between two fluorophores. While the presence of target induces a conjunction of two split aptamer fragments to form G-quadruplex, and subsequent assemble with PFEP leading to the formation of G-quadruplex/thrombin/PFEP complex. The distance between the PFEP and dye increased due to protein's large size, leading to a remarkable decrease of the FRET signal. Compared with the intact aptamer, the use of shorter split aptamer fragments increases the possibility of forming G-quadruplex upon target. Thus, the rate of change of FRET signal before and after the addition of target improved significantly and a higher sensitivity (limit of detection (LOD) = 2 nM) was obtained. This strategy is superior in that it is rapid, has low cost and homogeneous detection, and does not need heating to avoid an unfavorable secondary structure of DNA probe. With further efforts, this method could be extended to a universal way for simple and sensitive detection of a variety of biomolecules.
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Affiliation(s)
- Xingfen Liu
- Key Laboratory for Organic Electronics & Information Displays (KLOEID) and Institute of Advanced Materials (IAM), Nanjing University of Posts & Telecommunications , Nanjing 210023, People's Republic of China
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35
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Zhu D, Zhu J, Zhu Y, Wang L, Jiang W. Sensitive detection of transcription factors using an Ag+-stabilized self-assembly triplex DNA molecular switch. Chem Commun (Camb) 2014; 50:14987-90. [DOI: 10.1039/c4cc06205a] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A simple, enzyme-free and sensitive new fluorescent strategy for detection of transcription factors was proposed based on a bifunctional Ag+-stabilized self-assembly triplex DNA molecular switch.
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Affiliation(s)
- Desong Zhu
- Key Laboratory for Colloid and Interface Chemistry of Education Ministry
- Department of Chemistry
- Shandong University
- Jinan, China
| | - Jing Zhu
- Key Laboratory for Colloid and Interface Chemistry of Education Ministry
- Department of Chemistry
- Shandong University
- Jinan, China
| | - Ye Zhu
- Key Laboratory for Colloid and Interface Chemistry of Education Ministry
- Department of Chemistry
- Shandong University
- Jinan, China
| | - Lei Wang
- School of Pharmacy
- Shandong University
- Jinan 250012, P. R. China
| | - Wei Jiang
- Key Laboratory for Colloid and Interface Chemistry of Education Ministry
- Department of Chemistry
- Shandong University
- Jinan, China
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36
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Niu L, Cheng K, Wu Y, Wang T, Shi Q, Liu D, Du Z. Sensitivity improved plasmonic gold nanoholes array biosensor by coupling quantum-dots for the detection of specific biomolecular interactions. Biosens Bioelectron 2013; 50:137-42. [DOI: 10.1016/j.bios.2013.06.023] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2013] [Revised: 05/28/2013] [Accepted: 06/10/2013] [Indexed: 12/31/2022]
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