1
|
Liu L, Xiong H, Wang X, Jiang H. Gold nanomaterials: important vectors in biosensing of breast cancer biomarkers. Anal Bioanal Chem 2024; 416:3869-3885. [PMID: 38277010 DOI: 10.1007/s00216-024-05151-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2023] [Revised: 01/01/2024] [Accepted: 01/11/2024] [Indexed: 01/27/2024]
Abstract
Breast cancer (BC) is one of the most common malignant tumors in women worldwide, and its incidence is increasing every year. Early diagnosis and treatment are critical to improve the curability and prognosis of patients. However, existing detection methods often suffer from insufficient sensitivity and specificity, which limits their clinical application. Fortunately, the rapid development of nanotechnology offers new possibilities for diagnosing BC. For example, the unique physicochemical properties of gold nanomaterials (Au NMs), such as fascinating optical properties and quantum size effect, along with excellent biocompatibility and modifiability, enable them to manifest great potential in the field of biosensing, especially in the detection of BC biomarkers. Through fine surface modification and functionalization, Au NMs can accurately bind to specific antibodies, nucleic acids, and other biomolecules, thus achieving sensitive and precise detection of specific biomarkers. Here, we focus on the research progress of Au NMs as a key biosensing vector in BC biomarker detection. From four major perspectives of early diagnosis, prognostic evaluation, risk prediction, and bioimaging applications, we have thoroughly analyzed the broad application of Au NMs in BC biomarker detection and prospectively addressed its possible future trends. We hope this review will provide more comprehensive ideas for future researchers and promote the further development of this field.
Collapse
Affiliation(s)
- Liu Liu
- State Key Laboratory of Digital Medical Engineering, School of Biological Science and Medical Engineering, Southeast University, Nanjing, 210096, People's Republic of China
| | - Hongjie Xiong
- State Key Laboratory of Digital Medical Engineering, School of Biological Science and Medical Engineering, Southeast University, Nanjing, 210096, People's Republic of China
| | - Xuemei Wang
- State Key Laboratory of Digital Medical Engineering, School of Biological Science and Medical Engineering, Southeast University, Nanjing, 210096, People's Republic of China.
| | - Hui Jiang
- State Key Laboratory of Digital Medical Engineering, School of Biological Science and Medical Engineering, Southeast University, Nanjing, 210096, People's Republic of China.
| |
Collapse
|
2
|
Yuan R, Chen H, Liu J, Li R, He H. An electrochemical impedimetric platform formed by a CNT@UiO-66 nanocomposite for quantitative analysis of oxytetracycline. Dalton Trans 2023; 52:11552-11557. [PMID: 37545403 DOI: 10.1039/d3dt01980b] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/08/2023]
Abstract
Functional materials are considered one of the most critical factors in constructing high-performance electrochemical aptasensors in the sensing field. In this work, the microporous Zr-MOF UiO-66 (UiO = Universitetet i Oslo) is selected for assembly with carbon nanotubes (CNTs) to prepare a CNT@UiO-66 composite. The as-synthesized CNT@UiO-66 composite has a high surface area, excellent stability, good electrical conductivity, and abundant Zr(IV) sites, conferring it great potential for application in fabricating high-performance electrochemical aptasensors. It is gratifying that this electrochemical impedimetric aptasensor can detect trace oxytetracycline (OTC) from 0.01 to 0.7 pg mL-1 with a low limit of detection (LOD) of 1.48 fg mL-1. Meanwhile, this fabricated sensor based on CNT@UiO-66 has fine stability, excellent selectivity, and available reproducibility. In particular, the CNT@UiO-66-based aptasensor can quantitatively detect the OTC concentration in real samples.
Collapse
Affiliation(s)
- Rongrong Yuan
- Department of Materials Science and Engineering, Jilin Jianzhu University, Changchun 130118, P. R. China.
| | - Hongxu Chen
- Nanotechnology Research Institute (NRI), Jiaxing University, Jiaxing, 314001, P. R. China.
| | - Jiawei Liu
- Department of Materials Science and Engineering, Jilin Jianzhu University, Changchun 130118, P. R. China.
| | - Ruyu Li
- Department of Materials Science and Engineering, Jilin Jianzhu University, Changchun 130118, P. R. China.
| | - Hongming He
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules, College of Chemistry, Tianjin Normal University, Tianjin 300387, P. R. China.
| |
Collapse
|
3
|
Chen R, Chen H, Peng H, Zheng Y, Lin Z, Lin X. Multi-Walled Carbon Nanotube Array Modified Electrode with 3D Sensing Interface as Electrochemical DNA Biosensor for Multidrug-Resistant Gene Detection. BIOSENSORS 2023; 13:764. [PMID: 37622850 PMCID: PMC10452495 DOI: 10.3390/bios13080764] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/07/2023] [Revised: 07/20/2023] [Accepted: 07/24/2023] [Indexed: 08/26/2023]
Abstract
Drug resistance in cancer is associated with overexpression of the multidrug resistance (MDR1) gene, leading to the failure of cancer chemotherapy treatment. Therefore, the establishment of an effective method for the detection of the MDR1 gene is extremely crucial in cancer clinical therapy. Here, we report a novel DNA biosensor based on an aligned multi-walled carbon nanotube (MWCNT) array modified electrode with 3D nanostructure for the determination of the MDR1 gene. The microstructure of the modified electrode was observed by an atomic force microscope (AFM), which demonstrated that the electrode interface was arranged in orderly needle-shaped protrusion arrays. The electrochemical properties of the biosensor were characterized by cyclic voltammetry (CV), differential pulse voltammetry (DPV), and electrochemical impedance spectroscopy (EIS). Chronocoulometry (CC) was used for the quantitative detection of the MDR1 gene. Taking advantage of the good conductivity and large electrode area of the MWCNT arrays, this electrochemical DNA sensor achieved a dynamic range from 1.0 × 10-12 M to 1.0 × 10-8 M with a minimal detection limit of 6.4 × 10-13 M. In addition, this proposed DNA biosensor exhibited high sensitivity, selectivity, and stability, which may be useful for the trace analysis of the MDR1 gene in complex samples.
Collapse
Affiliation(s)
| | | | - Huaping Peng
- Higher Educational Key Laboratory for Nano Biomedical Technology of Fujian Province, Department of Pharma-Ceutical Analysis, Faculty of Pharmacy, Fujian Medical University, Fuzhou 350122, China; (R.C.); (H.C.); (Y.Z.); (Z.L.)
| | | | | | - Xinhua Lin
- Higher Educational Key Laboratory for Nano Biomedical Technology of Fujian Province, Department of Pharma-Ceutical Analysis, Faculty of Pharmacy, Fujian Medical University, Fuzhou 350122, China; (R.C.); (H.C.); (Y.Z.); (Z.L.)
| |
Collapse
|
4
|
Ji X, Lin X, Rivnay J. Organic electrochemical transistors as on-site signal amplifiers for electrochemical aptamer-based sensing. Nat Commun 2023; 14:1665. [PMID: 36966131 PMCID: PMC10039935 DOI: 10.1038/s41467-023-37402-2] [Citation(s) in RCA: 13] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2022] [Accepted: 03/15/2023] [Indexed: 03/27/2023] Open
Abstract
Electrochemical aptamer-based sensors are typically deployed as individual, passive, surface-functionalized electrodes, but they exhibit limited sensitivity especially when the area of the electrode is reduced for miniaturization purposes. We demonstrate that organic electrochemical transistors (electrolyte gated transistors with volumetric gating) can serve as on-site amplifiers to improve the sensitivity of electrochemical aptamer-based sensors. By monolithically integrating an Au working/sensing electrode, on-chip Ag/AgCl reference electrode, and Poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonate) counter electrode - also serving as the channel of an organic electrochemical transistor- we can simultaneously perform testing of organic electrochemical transistors and traditional electroanalytical measurement on electrochemical aptamer-based sensors including cyclic voltammetry and square-wave voltammetry. This device can directly amplify the current from the electrochemical aptamer-based sensor via the in-plane current modulation in the counter electrode/transistor channel. The integrated sensor can sense transforming growth factor beta 1 with 3 to 4 orders of magnitude enhancement in sensitivity compared to that in an electrochemical aptamer-based sensor (292 μA/dec vs. 85 nA/dec). This approach is believed to be universal, and can be applied to a wide range of tethered electrochemical reporter-based sensors to enhance sensitivity, aiding in sensor miniaturization and easing the burden on backend signal processing.
Collapse
Affiliation(s)
- Xudong Ji
- Department of Biomedical Engineering, Northwestern University, Evanston, IL, 60208, USA
- Simpson Querrey Institute, Northwestern University, Chicago, IL, 60611, USA
| | - Xuanyi Lin
- Center for Sleep and Circadian Biology, Northwestern University, Evanston, IL, 60208, USA
- Department of Neurobiology, Northwestern University, Evanston, IL, 60208, USA
- Department of Psychology, The University of Hong Kong, Pokfulam Road, Hong Kong SAR, China
| | - Jonathan Rivnay
- Department of Biomedical Engineering, Northwestern University, Evanston, IL, 60208, USA.
- Simpson Querrey Institute, Northwestern University, Chicago, IL, 60611, USA.
| |
Collapse
|
5
|
Meftah M, Habel A, Baachaoui S, Yaacoubi-Loueslati B, Raouafi N. Sensitive electrochemical detection of polymorphisms in IL6 and TGFβ1 genes from ovarian cancer DNA patients using EcoRI and DNA hairpin-modified gold electrodes. Mikrochim Acta 2022; 190:15. [PMID: 36479645 DOI: 10.1007/s00604-022-05595-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2022] [Accepted: 11/23/2022] [Indexed: 12/12/2022]
Abstract
Two electrochemical bioplatforms were prepared based on thiolated hairpin DNA probes tethered to AuNP-modified screen-printed electrodes to detect T > G and T > C polymorphisms, namely rs1880269 and rs1800469, present the interleukin-6 (IL6) and transforming growth factor β1 (TGFβ1) genes. The electrochemical readout was ensured by the detection of the double-stranded DNA using methylene blue as a redox probe after treatment by EcoRI restrictase. The main parameters influencing the analytical response such as the thiolated DNA probe concentration, incubation time with electrode, DNA hybridization time, EcoRI enzyme load, and its cleavage time were optimized based on the current intensity and signal-to-blank (S/B) ratio as selection criteria. Using spiked buffer solutions, the IL6 and TGFβ1 E-bioplatforms display wide ranges of linearity (1 × 102-1 × 108 fM and 5 × 101-1 × 105 fM, respectively) and limits of detection (47.9 fM and 16.6 fM, respectively). The two bioelectrodes have also good discrimination toward 1-mismatched, two mismatched, and non-complementary sequences, when they were used 30-fold higher than the target sequences. More importantly, the two bioplatforms successfully detected the single nucleotide polymorphisms (SNPs) in scarcely diluted genomic DNA, collected from 52 donors, and showed they can reliably distinguish between heterozygous (TG and TC genotypes) and homozygous (GG and CC genotypes) patients with respect to the control subjects (TT genotype), where the differences are statistically highly significant (p-value < 0.0001). Thus, the designed devices could be used to conduct large cohort studies targeting these mutations or extended to other SNPs.
Collapse
Affiliation(s)
- Maroua Meftah
- Sensors and Biosensors Group, Analytical Chemistry and Electrochemistry Lab (LR99ES15), Chemistry Department, Faculty of Science of Tunis, University of Tunis El Manar, 2092, Tunis El Manar, Tunisia
| | - Azza Habel
- Laboratory of Mycology, Pathologies and Biomarkers (LR16ES05), Biology Department, Faculty of Science of Tunis, University of Tunis El Manar, 2092, Tunis El Manar, Tunisia
| | - Sabrine Baachaoui
- Sensors and Biosensors Group, Analytical Chemistry and Electrochemistry Lab (LR99ES15), Chemistry Department, Faculty of Science of Tunis, University of Tunis El Manar, 2092, Tunis El Manar, Tunisia
| | - Basma Yaacoubi-Loueslati
- Laboratory of Mycology, Pathologies and Biomarkers (LR16ES05), Biology Department, Faculty of Science of Tunis, University of Tunis El Manar, 2092, Tunis El Manar, Tunisia
| | - Noureddine Raouafi
- Sensors and Biosensors Group, Analytical Chemistry and Electrochemistry Lab (LR99ES15), Chemistry Department, Faculty of Science of Tunis, University of Tunis El Manar, 2092, Tunis El Manar, Tunisia.
| |
Collapse
|
6
|
Abstract
Acute kidney injury (AKI) is one of the most prevalent and complex clinical syndromes with high morbidity and mortality. The traditional diagnosis parameters are insufficient regarding specificity and sensitivity, and therefore, novel biomarkers and their facile and rapid applications are being sought to improve the diagnostic procedures. The biosensors, which are employed on the basis of electrochemistry, plasmonics, molecular probes, and nanoparticles, are the prominent ways of developing point-of-care devices, along with the mutual integration of efficient surface chemistry strategies. In this manner, biosensing platforms hold pivotal significance in detecting and quantifying novel AKI biomarkers to improve diagnostic interventions, potentially accelerating clinical management to control the injury in a timely manner. In this review, novel diagnostic platforms and their manufacturing processes are presented comprehensively. Furthermore, strategies to boost their effectiveness are also indicated with several applications. To maximize these efforts, we also review various biosensing approaches with a number of biorecognition elements (e.g., antibodies, aptamers, and molecular imprinting molecules), as well as benchmark their features such as robustness, stability, and specificity of these platforms.
Collapse
Affiliation(s)
- Esma Derin
- UNAM-National Nanotechnology Research Center, Bilkent University, 06800 Ankara, Turkey
- Institute of Materials Science and Nanotechnology, Bilkent University, 06800 Ankara, Turkey
| | - Fatih Inci
- UNAM-National Nanotechnology Research Center, Bilkent University, 06800 Ankara, Turkey
- Institute of Materials Science and Nanotechnology, Bilkent University, 06800 Ankara, Turkey
| |
Collapse
|
7
|
Graphene-Oxide and Ionic Liquid Modified Electrodes for Electrochemical Sensing of Breast Cancer 1 Gene. BIOSENSORS 2022; 12:bios12020095. [PMID: 35200355 PMCID: PMC8870019 DOI: 10.3390/bios12020095] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/27/2021] [Revised: 01/29/2022] [Accepted: 01/30/2022] [Indexed: 12/23/2022]
Abstract
Graphene-oxide and ionic liquid composite-modified pencil graphite electrodes (GO-IL-PGEs) were developed and used as a sensing platform for breast cancer 1 (BRCA1) gene detection. The characterization of GO-IL modified electrodes was executed by scanning electron microscopy (SEM), cyclic voltammetry (CV), and electrochemical impedance spectroscopy (EIS). The nucleic-acid hybridization was monitored by a differential pulse voltammetry (DPV) technique by directly measuring the guanine oxidation signal without using any indicator. The effects of the IL concentration, the probe concentration, and the hybridization time were optimized to the biosensor response. The limit of detection (LOD) was calculated in the concentration range of 2–10 μg/mL for the BRCA1 gene and found to be 1.48 µg/mL. The sensitivity of the sensor was calculated as 1.49 µA mL/µg cm2. The developed biosensor can effectively discriminate the complementary target sequence in comparison to a three-base-mismatched sequence or the non-complementary one.
Collapse
|
8
|
Joshi A, Vishnu G K A, Sakorikar T, Kamal AM, Vaidya JS, Pandya HJ. Recent advances in biosensing approaches for point-of-care breast cancer diagnostics: challenges and future prospects. NANOSCALE ADVANCES 2021; 3:5542-5564. [PMID: 36133274 PMCID: PMC9417675 DOI: 10.1039/d1na00453k] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/19/2021] [Accepted: 08/12/2021] [Indexed: 05/12/2023]
Abstract
Timely and accurate diagnosis of breast cancer is essential for efficient treatment and the best possible survival rates. Biosensors have emerged as a smart diagnostic platform for the detection of biomarkers specific to the onset, recurrence, and therapeutic drug monitoring of breast cancer. There have been exciting recent developments, including significant improvements in the validation, sensitivity, specificity, and integration of sample processing steps to develop point-of-care (POC) integrated micro-total analysis systems for clinical settings. The present review highlights various biosensing modalities (electrical, optical, piezoelectric, mass, and acoustic sensing). It provides deep insights into their design principles, signal amplification strategies, and comparative performance analysis. Finally, this review emphasizes the status of existing integrated micro-total analysis systems (μ-TAS) for personalized breast cancer therapeutics and associated challenges and outlines the approach required to realize their successful translation into clinical settings.
Collapse
Affiliation(s)
- Anju Joshi
- Department of Electronic Systems Engineering, Division of EECS, Indian Institute of Science Bangalore India
| | - Anil Vishnu G K
- Department of Electronic Systems Engineering, Division of EECS, Indian Institute of Science Bangalore India
- Centre for BioSystems Science and Engineering, Indian Institute of Science Bangalore India
| | - Tushar Sakorikar
- Department of Electronic Systems Engineering, Division of EECS, Indian Institute of Science Bangalore India
| | - Arif M Kamal
- Department of Electronic Systems Engineering, Division of EECS, Indian Institute of Science Bangalore India
| | - Jayant S Vaidya
- Division of Surgery and Interventional Science, University College London 4919 London UK
| | - Hardik J Pandya
- Department of Electronic Systems Engineering, Division of EECS, Indian Institute of Science Bangalore India
| |
Collapse
|
9
|
Liu J, Wang T, Xiao B, Deng M, Yu P, Qing T. Fluorometric determination of the breast cancer 1 gene based on the target-induced conformational change of a DNA template for copper nanoclusters. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2021; 13:712-718. [PMID: 33480889 DOI: 10.1039/d0ay01712d] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
The breast cancer 1 (BRCA1) gene is a tumor suppressor gene, whose mutation is closely related to breast cancer. Therefore, the sensitive detection of the BRCA1 gene is extremely important for human health, particularly for women. In this study, a label-free fluorescent method based on hairpin DNA-templated copper nanoclusters (CuNCs) was for the first time developed for the detection of the BRCA1 gene. In the absence of target DNA, the detection system showed a strong red emission and produced a high emission peak. However, in the presence of the BRCA1 gene, the DNA probe hybridized with the BRCA1 gene and conformation of the DNA probe changed. As a result, the amount of produced CuNCs decreased and a low emission peak was obtained. The fluorescence intensity of the detection system was linearly correlated with the concentration of the BRCA1 gene ranging from 2 nM to 600 nM. The detectable limit was 2 nM for the BRCA1 gene assay, which was comparable with those reported by other non-amplifying sensors. Moreover, the developed method showed satisfactory recoveries for the BRCA1 gene assay in the bovine serum. The DNA-templated CuNC-based fluorescent assay thus offered a promising platform for the diagnosis of a breast cancer biomarker.
Collapse
Affiliation(s)
- Jing Liu
- School of Materials Science and Engineering, Xiangtan University, Xiangtan 411105, PR China.
| | | | | | | | | | | |
Collapse
|
10
|
Feng D, Su J, He G, Xu Y, Wang C, Zheng M, Qian Q, Mi X. Electrochemical DNA Sensor for Sensitive BRCA1 Detection Based on DNA Tetrahedral-Structured Probe and Poly-Adenine Mediated Gold Nanoparticles. BIOSENSORS-BASEL 2020; 10:bios10070078. [PMID: 32698331 PMCID: PMC7400266 DOI: 10.3390/bios10070078] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/04/2020] [Revised: 06/28/2020] [Accepted: 07/08/2020] [Indexed: 01/18/2023]
Abstract
BRCA1 is the biomarker for the early diagnosis of breast cancer. Detection of BRCA1 has great significance for the genetic analysis, early diagnosis and clinical treatment of breast cancer. In this work, we developed a simple electrochemical DNA sensor based on a DNA tetrahedral-structured probe (TSP) and poly-adenine (polyA) mediated gold nanoparticles (AuNPs) for the sensitive detection of BRCA1. A thiol-modified TSP was used as the scaffold on the surface of the screen-printed AuNPs electrode. The capture DNA (TSP) and reporter DNA were hybridized to the target DNA (BRCA1), respectively, to form the typical sandwich system. The nanocomposites of reporter DNA (polyA at the 5′ end) combined with AuNPs were employed for signal amplification which can capture multiple enzymes by the specificity between biotin and streptavidin. Measurements were completed in the electrochemical workstation by cyclic voltammetry and amperometry and we obtained the low limit of detection of 0.1 fM with the linear range from 1 fM to 1 nM. High sensitivity and good specificity of the proposed electrochemical DNA sensor showed potential applications in clinical early diagnosis for breast cancer.
Collapse
Affiliation(s)
- Dezhi Feng
- Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201210, China; (D.F.); (G.H.); (Y.X.); (C.W.); (M.Z.); (Q.Q.)
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jing Su
- Institute for Personalized Medicine, School of Biomedical Engineering, Shanghai Jiao Tong University, Shanghai 200030, China;
| | - Guifang He
- Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201210, China; (D.F.); (G.H.); (Y.X.); (C.W.); (M.Z.); (Q.Q.)
- School of Life Sciences, Shanghai University, Shanghai 200444, China
| | - Yi Xu
- Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201210, China; (D.F.); (G.H.); (Y.X.); (C.W.); (M.Z.); (Q.Q.)
| | - Chenguang Wang
- Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201210, China; (D.F.); (G.H.); (Y.X.); (C.W.); (M.Z.); (Q.Q.)
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Mengmeng Zheng
- Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201210, China; (D.F.); (G.H.); (Y.X.); (C.W.); (M.Z.); (Q.Q.)
- School of Life Sciences, Shanghai University, Shanghai 200444, China
| | - Qiuling Qian
- Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201210, China; (D.F.); (G.H.); (Y.X.); (C.W.); (M.Z.); (Q.Q.)
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Xianqiang Mi
- Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201210, China; (D.F.); (G.H.); (Y.X.); (C.W.); (M.Z.); (Q.Q.)
- University of Chinese Academy of Sciences, Beijing 100049, China
- Key Laboratory of Functional Materials for Informatics, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai 200050, China
- CAS Center for Excellence in Superconducting Electronics (CENSE), Shanghai 200050, China
- Key Laboratory of Systems Biology, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Hangzhou 310024, China
- Correspondence:
| |
Collapse
|
11
|
Zhou L, Wang T, Bai Y, Li Y, Qiu J, Yu W, Zhang S. Dual-amplified strategy for ultrasensitive electrochemical biosensor based on click chemistry-mediated enzyme-assisted target recycling and functionalized fullerene nanoparticles in the detection of microRNA-141. Biosens Bioelectron 2019; 150:111964. [PMID: 31929092 DOI: 10.1016/j.bios.2019.111964] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2019] [Revised: 12/10/2019] [Accepted: 12/12/2019] [Indexed: 12/21/2022]
Abstract
Rapid and efficient detection of tumor marker at the early stages is one of the crucial challenges in cancer diagnostics and therapy. In this study, an ultrasensitive electrochemical biosensor was fabricated by dual-amplified strategy for the detection of ultra-trace microRNA-141 (miRNA-141). Firstly, two split sequences contained G-quadruplex were connected by click chemistry-mediated nucleic acid strands self-assembly and the obtained complete G-quadruplex was complementary with miRNA-141 to formed DNA-RNA hybrid duplexes. Subsequently, the formed DNA-RNA hybrid duplexes were specifically recognized by duplex-specific nuclease (DSN), and the DNA part of the duplexes were cleaved and the miRNA-141 were released to trigger next cycle, which acquired a primal signal amplification by enzyme-assisted target recycling (EATR). Moreover, amino and thiol group multi-labeled functionalized fullerene nanoparticles (FC60) with a larger surface active sites and better biocompatibility, were designed rationally to modify the Au electrodes, which produced multiply-enhanced amplified signal. This dual-amplified sensing system exhibited a remarkable analytical performance for the detection of miRNA-141 in concentrations ranging from 0.1 pM to 100 nM and the detection limit of 7.78 fM was obtained. Compared with the biosensor with single amplification strategy such as EATR, this electrochemical biosensor based on dual-amplified strategy exhibited an excellent discrimination capability and higher analytical performance. Therefore, this electrochemical biosensor might hold a great potential for further applications in biomedical research and early clinical diagnosis.
Collapse
Affiliation(s)
- Lili Zhou
- Key Laboratory of Laboratory Medical Diagnostics of Education, Department of Laboratory Medicine, Chongqing Medical University, Chongqing, 400016, PR China; Department of Clinical Laboratory, People's Hospital of Changshou Chongqing, Chongqing, 401220, PR China.
| | - Ting Wang
- Key Laboratory of Laboratory Medical Diagnostics of Education, Department of Laboratory Medicine, Chongqing Medical University, Chongqing, 400016, PR China; Department of Clinical Laboratory, The Central Hospital of Fuling Chongqing, Chongqing, 408099, PR China
| | - Yan Bai
- Key Laboratory of Laboratory Medical Diagnostics of Education, Department of Laboratory Medicine, Chongqing Medical University, Chongqing, 400016, PR China; Department of Clinical Laboratory, People's Hospital of Changshou Chongqing, Chongqing, 401220, PR China
| | - Yi Li
- Key Laboratory of Laboratory Medical Diagnostics of Education, Department of Laboratory Medicine, Chongqing Medical University, Chongqing, 400016, PR China
| | - Juhui Qiu
- State Key Laboratory of Membrane Biology, Tsinghua-Peking Center for Life Sciences, School of Life Sciences, Tsinghua University, Beijing, 100084, PR China
| | - Wen Yu
- Key Laboratory of Laboratory Medical Diagnostics of Education, Department of Laboratory Medicine, Chongqing Medical University, Chongqing, 400016, PR China
| | - Sheng Zhang
- School of Economics and Management, Chongqing University of Posts and Telecommunications, Chongqing, 400065, PR China
| |
Collapse
|
12
|
Yang B, Zhang S, Fang X, Kong J. Double signal amplification strategy for ultrasensitive electrochemical biosensor based on nuclease and quantum dot-DNA nanocomposites in the detection of breast cancer 1 gene mutation. Biosens Bioelectron 2019; 142:111544. [PMID: 31376717 DOI: 10.1016/j.bios.2019.111544] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2019] [Revised: 07/20/2019] [Accepted: 07/26/2019] [Indexed: 12/21/2022]
Abstract
Rapid and efficient detection of microRNA (miRNA) of breast cancer 1 gene mutation (BRCA1) at their earliest stages is one of the crucial challenges in cancer diagnostics. In this study, a highly-sensitive electrochemical DNA biosensor was fabricated by double signal amplification (DSA) strategy for the detection of ultra-trace miRNA of BRCA1. In the presence of target miRNA of BRCA1, the well-matched RNA-DNA duplexes were specifically recognized by double-strand specific nuclease (DSN), and the DNA part of the duplexes were then cleaved and miRNAs were released to trigger another following cycle, which produced a primarily amplified signal by such a cyclic enzymatic signal amplification (CESA). Then triple-CdTe quantum dot labelled DNA nanocomposites (3-QD@DNA NC) was selectively hybridized with the cleaved DNA probe on the electrode and produced multiply amplified signals. The biosensor exhibited a high sensitivity for the detection of miRNA of BRCA1 in concentrations ranging from 5 aM to 5 fM, and its detection limit of 1.2 aM was obtained, which is two or three orders of magnitude lower than those by single signal amplification strategy such as CESA or QD-labeled DNA probes. The as-prepared biosensor was successfully used to detect the miRNA of BRCA1 in human serum samples with acceptable stability, good reproducibility, and good recovery. The proposed DNA biosensor based on double signal amplification strategy provided a feasible, rapid, and sensitive platform for early clinical diagnosis and practical applications.
Collapse
Affiliation(s)
- Bin Yang
- Department of Chemistry and Institutes of Biomedical Sciences, Fudan University, Shanghai, 200438, PR China
| | - Song Zhang
- Department of Chemistry and Institutes of Biomedical Sciences, Fudan University, Shanghai, 200438, PR China.
| | - Xueen Fang
- Department of Chemistry and Institutes of Biomedical Sciences, Fudan University, Shanghai, 200438, PR China
| | - Jilie Kong
- Department of Chemistry and Institutes of Biomedical Sciences, Fudan University, Shanghai, 200438, PR China.
| |
Collapse
|
13
|
Dutta S, Dutta Chowdhury A, Biswas S, Park EY, Agnihotri N, De A, De S. Development of an effective electrochemical platform for highly sensitive DNA detection using MoS2 - polyaniline nanocomposites. Biochem Eng J 2018. [DOI: 10.1016/j.bej.2018.09.016] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
14
|
Ehzari H, Safari M, Shahlaei M. A simple and label-free genosensor for BRCA1 related sequence based on electrospinned ribbon conductive nanofibers. Microchem J 2018. [DOI: 10.1016/j.microc.2018.07.033] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
|
15
|
Krittayavathananon A, Sawangphruk M. Impedimetric Sensor of ss-HSDNA/Reduced Graphene Oxide Aerogel Electrode toward Aflatoxin B1 Detection: Effects of Redox Mediator Charges and Hydrodynamic Diffusion. Anal Chem 2017; 89:13283-13289. [PMID: 29171757 DOI: 10.1021/acs.analchem.7b03329] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Here, an impedimetric biosensor for determination and quantification of an aflatoxin B1 (AFB1) level using a reduced graphene oxide aerogel labeled with a single strand DNA (ss-HSDNA/rGOae) modified on a rotating disk electrode (RDE) is presented. Owing to the large biomolecule biding on the electrode, an electron transfer is interrupted and not easily accessible to a target molecule. To address this issue, we aim to study two effects; one considers electro-redox mediators and the other considers the hydrodynamic effect. By observing a cyclic voltammetric response from the ss-HSDNA/rGOae electrode in three different charges of the redox mediators (i.e., neutral FcCH2OH, cationic Ru(NH3)63+, and anionic Fe(CN)64-) in a phosphate buffer solution (PBS) containing AFB1, the magnitude of anodic current at 50 mV s-1 is 825, 615, and 550 mA cm-1, respectively, which is significant dominated by the charge of the redox probe. The effect of hydrodynamic diffusion of the ss-HSDNA/rGOae rotating disk electrode (RDE) toward AFB1 detection using FcCH2OH as the redox mediator was recorded by applying a range of rotating speed from 500 to 4000 rpm. Increasing rotating speed reduces the charge transfer resistance resulting in the lower detectable level for AFB1 quantification. In the case of 4000 rpm, the AFB1 can be detected with a limit of detection of 0.04 ng/mL and a linear range of 1 × 10-10 to 7 × 10-8g/mL.
Collapse
Affiliation(s)
- Atiweena Krittayavathananon
- Department of Chemical and Biomolecular Engineering, School of Energy Science and Technology, Vidyasirimedhi Institute of Science and Technology , Rayong 21210, Thailand
| | - Montree Sawangphruk
- Department of Chemical and Biomolecular Engineering, School of Energy Science and Technology, Vidyasirimedhi Institute of Science and Technology , Rayong 21210, Thailand
| |
Collapse
|
16
|
Muti M, Muti M. Electrochemical Determination of Label Free BRCA Hybridization by Single Use Antioxidant Modified Electrode. ELECTROANAL 2017. [DOI: 10.1002/elan.201700256] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Affiliation(s)
- Merve Muti
- Adnan Menderes University; Faculty of Arts and Sciences, Department of Chemistry; 09010 Aydın Turkey
- Adnan Menderes University; Söke Vocational School, Mechatronics Program; 09200 Aydın Turkey
| | - Mihrican Muti
- Adnan Menderes University; Faculty of Arts and Sciences, Department of Chemistry; 09010 Aydın Turkey
| |
Collapse
|
17
|
Zhou FY, Hai H, Yuan YL, Li JP. Ultrasensitive Electrochemiluminescence Biosensor for mRNA Based on Polymerase Assisted Signal Amplification. ELECTROANAL 2016. [DOI: 10.1002/elan.201600590] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- F. Y. Zhou
- Guangxi Key laboratory of Electrochemical and Magnetochemical Function Materials, College of Chemistry and Bioengineering; Guilin University of Technology; Guilin 541004 P. R. China
| | - H. Hai
- Guangxi Key laboratory of Electrochemical and Magnetochemical Function Materials, College of Chemistry and Bioengineering; Guilin University of Technology; Guilin 541004 P. R. China
| | - Y. L. Yuan
- Guangxi Key laboratory of Electrochemical and Magnetochemical Function Materials, College of Chemistry and Bioengineering; Guilin University of Technology; Guilin 541004 P. R. China
| | - J. P. Li
- Guangxi Key laboratory of Electrochemical and Magnetochemical Function Materials, College of Chemistry and Bioengineering; Guilin University of Technology; Guilin 541004 P. R. China
| |
Collapse
|
18
|
Yang S, You M, Yang L, Zhang F, Wang Q, He P. A recyclable electrochemical sensing platform for breast cancer diagnosis based on homogeneous DNA hybridization and host-guest interaction between cucurbit [7]uril and ferrocene-nanosphere with signal amplification. J Electroanal Chem (Lausanne) 2016. [DOI: 10.1016/j.jelechem.2016.11.027] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
|
19
|
Photocatalytic electrosensor for label-free and ultrasensitive detection of BRCA1 gene. Biosens Bioelectron 2016; 85:957-963. [DOI: 10.1016/j.bios.2016.05.076] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2016] [Revised: 05/21/2016] [Accepted: 05/23/2016] [Indexed: 12/11/2022]
|
20
|
Sanromán-Iglesias M, Lawrie CH, Schäfer T, Grzelczak M, Liz-Marzán LM. Sensitivity Limit of Nanoparticle Biosensors in the Discrimination of Single Nucleotide Polymorphism. ACS Sens 2016. [DOI: 10.1021/acssensors.6b00393] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- María Sanromán-Iglesias
- CIC biomaGUNE, Paseo de Miramón
182, 20009 Donostia-San
Sebastián, Spain
- Molecular
Oncology Group, Biodonostia Research Institute, 20014 Donostia-San
Sebastián, Spain
| | - Charles H. Lawrie
- Molecular
Oncology Group, Biodonostia Research Institute, 20014 Donostia-San
Sebastián, Spain
- Ikerbasque, Basque Foundation for Science, 48013 Bilbao, Spain
| | - Thomas Schäfer
- Polymat, University of the Basque Country, 20018 Donostia-San Sebastián, Spain
- Ikerbasque, Basque Foundation for Science, 48013 Bilbao, Spain
| | - Marek Grzelczak
- CIC biomaGUNE, Paseo de Miramón
182, 20009 Donostia-San
Sebastián, Spain
- Ikerbasque, Basque Foundation for Science, 48013 Bilbao, Spain
- CIBER de Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), 20009 Donostia-San
Sebastián, Spain
| | - Luis M. Liz-Marzán
- CIC biomaGUNE, Paseo de Miramón
182, 20009 Donostia-San
Sebastián, Spain
- Ikerbasque, Basque Foundation for Science, 48013 Bilbao, Spain
- CIBER de Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), 20009 Donostia-San
Sebastián, Spain
| |
Collapse
|
21
|
Li X, Guo J, Zhai Q, Xia J, Yi G. Ultrasensitive electrochemical biosensor for specific detection of DNA based on molecular beacon mediated circular strand displacement polymerization and hyperbranched rolling circle amplification. Anal Chim Acta 2016; 934:52-8. [DOI: 10.1016/j.aca.2016.06.034] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2016] [Revised: 06/10/2016] [Accepted: 06/14/2016] [Indexed: 10/21/2022]
|
22
|
Zhou X, Xue S, Jing P, Xu W. A sensitive impedimetric platform biosensing protein: Insoluble precipitates based on the biocatalysis of manganese(III) meso-tetrakis (4-N-methylpyridiniumyl)-porphyrinin in HCR-assisted dsDNA. Biosens Bioelectron 2016; 86:656-663. [PMID: 27471156 DOI: 10.1016/j.bios.2016.07.065] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2016] [Revised: 07/08/2016] [Accepted: 07/19/2016] [Indexed: 11/29/2022]
Abstract
In this study, a sensitive biosensing interface for protein was reported based on nonconductive insoluble precipitates (IPs) by the biocatalysis of manganese(III) meso-tetrakis (4-N-methylpyridiniumyl)-porphyrin (MnTMPyP), which was intercalated into formed double-strand DNA (dsDNA) scaffold triggered by hybridization chain reaction (HCR). In the proposed impedimetric aptasensor, carcinoembryonic antigen (CEA) and its aptamer were used as testing model. PtPd nanowires (PtPdNWs) with large surface area and superior conductivity were employed as nanocarriers to greatly immobilize biomolecules (e.g. CEA aptamers). Then, two DNA hairpins H1 and H2 were introduced to trigger HCR with the assistance of DNA initiator, resulting in the formation of a long dsDNA scaffold. Meanwhile, mimicking enzyme MnTMPyP molecules were embedded into the resultant dsDNA, in situ generating the complex MnTMPyP-dsDNA with peroxidase-like activity. Under the biocatalysis of MnTMPyP-dsDNA, 3,3-diaminobenzidine (DAB) was oxidized to form nonconductive IPs. As a result, the electron transfer between electrode interface and redox probe was vastly hindered, leading to the significant amplification of electrochemical impedimetric signal. So, greatly improved analytical performances of the proposed aptasensor were achieved with a detection limit as low as 0.030pgmL(-1). And the successful assay of CEA in human serum samples enabled the developed biosensing platform to have promising potential in bioanalysis.
Collapse
Affiliation(s)
- Xingxing Zhou
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry (Southwest University), Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715 PR China
| | - Shuyan Xue
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry (Southwest University), Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715 PR China
| | - Pei Jing
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry (Southwest University), Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715 PR China
| | - Wenju Xu
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry (Southwest University), Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715 PR China.
| |
Collapse
|
23
|
Li G, Zhu M, Ma L, Yan J, Lu X, Shen Y, Wan Y. Generation of Small Single Domain Nanobody Binders for Sensitive Detection of Testosterone by Electrochemical Impedance Spectroscopy. ACS APPLIED MATERIALS & INTERFACES 2016; 8:13830-13839. [PMID: 27196036 DOI: 10.1021/acsami.6b04658] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
A phage display library of variable domain of the heavy chain only antibody or nanobody (Nb) was constructed after immunizing a bactrian camel with testosterone. With the smaller molecular size (15 kDa), improved solubility, good stability, high affinity, specificity, and lower immunogenicity, Nbs are a promising tool in the next generation of diagnosis and medical applications. Testosterone is a reproductive hormone, playing an important role in normal cardiac function and being the highly predictive marker for many diseases. Herein, a simple and sensitive immunosensor based on electrochemical impedance spectroscopy (EIS) and Nbs was successfully developed for the determination of testosterone. We successfully isolated the antitestosterone Nbs from an immune phage display library. Moreover, one of the Nbs was biotinylated according to in vivo BirA system, which showed the highest production yield and the most stable case. Further, the EIS immunosensor was set up for testosterone detection by applying the biotinylated antitestosterone Nb. As a result, the biosensor exhibited a linear working range from 0.05 to 5 ng mL(-1) with a detection limit of 0.045 ng mL(-1). In addition, the proposed immunosensor was successfully applied in determining testosterone in serum samples. In conclusion, the proposed immunosensor revealed high specificity of testosterone detection and showed as a potential approach for sensitive and accurate diagnosis of testosterone.
Collapse
Affiliation(s)
- Guanghui Li
- CAS Key Laboratory of Receptor Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences , Shanghai 201203, P. R. China
| | - Min Zhu
- CAS Key Laboratory of Receptor Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences , Shanghai 201203, P. R. China
| | - Lu Ma
- Institute of Life Sciences, Southeast University , Nanjing 210018, P. R. China
| | - Junrong Yan
- Institute of Life Sciences, Southeast University , Nanjing 210018, P. R. China
| | | | - Yanfei Shen
- Medical School, Southeast University , Nanjing 210009, P. R. China
| | - Yakun Wan
- CAS Key Laboratory of Receptor Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences , Shanghai 201203, P. R. China
- Jiangsu Nanobody Engineering and Research Center , Nantong 226010, P. R. China
| |
Collapse
|
24
|
Liu S, Gong H, Wang Y, Wang L. Label-free electrochemical nucleic acid biosensing by tandem polymerization and cleavage-mediated cascade target recycling and DNAzyme amplification. Biosens Bioelectron 2016; 77:818-23. [DOI: 10.1016/j.bios.2015.10.056] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2015] [Revised: 10/18/2015] [Accepted: 10/19/2015] [Indexed: 12/12/2022]
|
25
|
Yang H, Gao Y, Wang S, Qin Y, Xu L, Jin D, Yang F, Zhang GJ. In situ hybridization chain reaction mediated ultrasensitive enzyme-free and conjugation-free electrochemcial genosensor for BRCA-1 gene in complex matrices. Biosens Bioelectron 2016; 80:450-455. [PMID: 26875018 DOI: 10.1016/j.bios.2016.02.011] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2015] [Revised: 02/03/2016] [Accepted: 02/05/2016] [Indexed: 12/11/2022]
Abstract
In this study, we report an enzyme-free and conjugation-free electrochemical genosensor enabling an ultrasensitive readout of BRCA-1, a breast cancer susceptibility gene. The sensor employs a target-responsive hybridization chain reaction (HCR) to significantly amplify the detectable current signals. By means of a functional auxiliary probe pair and a versatile initiator sequence, a linear DNA concatemer structure can be formed via spontaneous and continuous polymerization of DNA oligomers in the presence of target sequence. Such a DNA nanoassembly endows the genosensor an ultrahigh sensitivity up to 1 aM, which is higher than that of the nanomaterials-based or enzyme mediated amplification approaches by several orders of magnitude. More importantly, the sensor's responsive peak current exhibits a favorable linear correlation to the logarithm of the concentrations of target sequence ranging from 1 aM to 10 pM. In addition, the sensor is highly selective, and can discriminate a single mismatched sequence. This HCR-based genosensor is also capable of probing low-abundance BRCA-1 gene sequence directly in complex matrices, such as 50% human serum, with minimal interference. These advantages will make our tailor-engineered HCR-based electrochemical genosensor appealing to genetic analysis and clinical diagnostics.
Collapse
Affiliation(s)
- Hui Yang
- Medical College, Henan University of Science and Technology, Luoyang 471003, China.
| | - Yang Gao
- Medical College, Henan University of Science and Technology, Luoyang 471003, China
| | - Siqi Wang
- School of Laboratory Medicine, Hubei University of Chinese Medicine, Wuhan 430065, China
| | - You Qin
- Cancer Center of Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Lu Xu
- School of Laboratory Medicine, Hubei University of Chinese Medicine, Wuhan 430065, China
| | - Dan Jin
- School of Laboratory Medicine, Hubei University of Chinese Medicine, Wuhan 430065, China.
| | - Fan Yang
- School of Laboratory Medicine, Hubei University of Chinese Medicine, Wuhan 430065, China.
| | - Guo-Jun Zhang
- School of Laboratory Medicine, Hubei University of Chinese Medicine, Wuhan 430065, China
| |
Collapse
|
26
|
Liu S, Wei W, Wang Y, Fang L, Wang L, Li F. Ultrasensitive electrochemical detection of nucleic acid by coupling an autonomous cascade target replication and enzyme/gold nanoparticle-based post-amplification. Biosens Bioelectron 2016; 80:208-214. [PMID: 26849348 DOI: 10.1016/j.bios.2016.01.067] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2015] [Revised: 01/20/2016] [Accepted: 01/27/2016] [Indexed: 10/22/2022]
Abstract
Owing to the intrinsic importance of nucleic acid as bio-targets, the development of isothermal and ultrasensitive electrochemical DNA biosensor is very essential for biological studies and medical diagnostics. Herein, the autonomous cascade DNA replication strategy was effectively married with the enzyme/gold nanoparticle-based post-amplification strategy to promote the detection performance toward target DNA. A hairpin DNA probe (HP) is designed that consists of an overhang at 3'-end as the recognition unit for target DNA, a recognition site for nicking endonuclease, and an alkane spacer to terminate polymerization reaction. The autonomous DNA replication-scission-displacement reaction operated by the nicking endonuclease/KF polymerase induced the autocatalytic opening of HP, which was then specifically bound by the enzyme/gold nanoparticles for further dual-signal amplification toward target-related sensing events. A low detection limit of 0.065 fM with an excellent selectivity toward target DNA could be achieved. The proposed biosensor could be also easily regenerated for target detection. The developed biosensor creates an opportunity for the effective coupling of the target replication with post-amplification strategies and thus opens a promising avenue for the detection of nucleic acid with low abundance in bioanalysis and clinical biomedicine.
Collapse
Affiliation(s)
- Shufeng Liu
- Key Laboratory of Sensor Analysis of Tumor Marker, Ministry of Education, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, No.53, Rd. Zhengzhou, Qingdao, Shandong 266042, China.
| | - Wenji Wei
- Key Laboratory of Sensor Analysis of Tumor Marker, Ministry of Education, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, No.53, Rd. Zhengzhou, Qingdao, Shandong 266042, China
| | - Yanqun Wang
- Key Laboratory of Sensor Analysis of Tumor Marker, Ministry of Education, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, No.53, Rd. Zhengzhou, Qingdao, Shandong 266042, China
| | - Li Fang
- Key Laboratory of Sensor Analysis of Tumor Marker, Ministry of Education, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, No.53, Rd. Zhengzhou, Qingdao, Shandong 266042, China
| | - Li Wang
- Key Laboratory of Sensor Analysis of Tumor Marker, Ministry of Education, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, No.53, Rd. Zhengzhou, Qingdao, Shandong 266042, China.
| | - Feng Li
- College of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University, Qingdao, Shandong 266109, China.
| |
Collapse
|
27
|
Wang W, Fan X, Xu S, Davis JJ, Luo X. Low fouling label-free DNA sensor based on polyethylene glycols decorated with gold nanoparticles for the detection of breast cancer biomarkers. Biosens Bioelectron 2015; 71:51-56. [DOI: 10.1016/j.bios.2015.04.018] [Citation(s) in RCA: 68] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2015] [Revised: 03/30/2015] [Accepted: 04/05/2015] [Indexed: 12/22/2022]
|
28
|
Gerasimova YV, Kolpashchikov DM. Enzyme-assisted target recycling (EATR) for nucleic acid detection. Chem Soc Rev 2015; 43:6405-38. [PMID: 24901032 DOI: 10.1039/c4cs00083h] [Citation(s) in RCA: 159] [Impact Index Per Article: 17.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Fast, reliable and sensitive methods for nucleic acid detection are of growing practical interest with respect to molecular diagnostics of cancer, infectious and genetic diseases. Currently, PCR-based and other target amplification strategies are most extensively used in practice. At the same time, such assays have limitations that can be overcome by alternative approaches. There is a recent explosion in the design of methods that amplify the signal produced by a nucleic acid target, without changing its copy number. This review aims at systematization and critical analysis of the enzyme-assisted target recycling (EATR) signal amplification technique. The approach uses nucleases to recognize and cleave the probe-target complex. Cleavage reactions produce a detectable signal. The advantages of such techniques are potentially low sensitivity to contamination and lack of the requirement of a thermal cycler. Nucleases used for EATR include sequence-dependent restriction or nicking endonucleases or sequence independent exonuclease III, lambda exonuclease, RNase H, RNase HII, AP endonuclease, duplex-specific nuclease, DNase I, or T7 exonuclease. EATR-based assays are potentially useful for point-of-care diagnostics, single nucleotide polymorphisms genotyping and microRNA analysis. Specificity, limit of detection and the potential impact of EATR strategies on molecular diagnostics are discussed.
Collapse
Affiliation(s)
- Yulia V Gerasimova
- Chemistry Department, University of Central Florida, 4000 Central Florida Blvd., Orlando, FL 32816, USA.
| | | |
Collapse
|
29
|
Zhu X, Li J, He H, Huang M, Zhang X, Wang S. Application of nanomaterials in the bioanalytical detection of disease-related genes. Biosens Bioelectron 2015; 74:113-33. [PMID: 26134290 DOI: 10.1016/j.bios.2015.04.069] [Citation(s) in RCA: 48] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2015] [Revised: 04/09/2015] [Accepted: 04/21/2015] [Indexed: 12/15/2022]
Abstract
In the diagnosis of genetic diseases and disorders, nanomaterials-based gene detection systems have significant advantages over conventional diagnostic systems in terms of simplicity, sensitivity, specificity, and portability. In this review, we describe the application of nanomaterials for disease-related genes detection in different methods excluding PCR-related method, such as colorimetry, fluorescence-based methods, electrochemistry, microarray methods, surface-enhanced Raman spectroscopy (SERS), quartz crystal microbalance (QCM) methods, and dynamic light scattering (DLS). The most commonly used nanomaterials are gold, silver, carbon and semiconducting nanoparticles. Various nanomaterials-based gene detection methods are introduced, their respective advantages are discussed, and selected examples are provided to illustrate the properties of these nanomaterials and their emerging applications for the detection of specific nucleic acid sequences.
Collapse
Affiliation(s)
- Xiaoqian Zhu
- Ministry-of-Education Key Laboratory for the Green Preparation and Application of Functional Materials, College of Materials Science and Engineering, Hubei University, Youyi Road 368, Wuchang, Wuhan, Hubei 430062, PR China
| | - Jiao Li
- Ministry-of-Education Key Laboratory for the Green Preparation and Application of Functional Materials, College of Materials Science and Engineering, Hubei University, Youyi Road 368, Wuchang, Wuhan, Hubei 430062, PR China
| | - Hanping He
- Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, Ministry of Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules, College of Chemistry and Chemical Engineering, Hubei University, Youyi Road 368, Wuchang, Wuhan, Hubei 430062, PR China; Ministry-of-Education Key Laboratory for the Green Preparation and Application of Functional Materials, College of Materials Science and Engineering, Hubei University, Youyi Road 368, Wuchang, Wuhan, Hubei 430062, PR China.
| | - Min Huang
- Ministry-of-Education Key Laboratory for the Green Preparation and Application of Functional Materials, College of Materials Science and Engineering, Hubei University, Youyi Road 368, Wuchang, Wuhan, Hubei 430062, PR China
| | - Xiuhua Zhang
- Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, Ministry of Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules, College of Chemistry and Chemical Engineering, Hubei University, Youyi Road 368, Wuchang, Wuhan, Hubei 430062, PR China; Ministry-of-Education Key Laboratory for the Green Preparation and Application of Functional Materials, College of Materials Science and Engineering, Hubei University, Youyi Road 368, Wuchang, Wuhan, Hubei 430062, PR China
| | - Shengfu Wang
- Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, Ministry of Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules, College of Chemistry and Chemical Engineering, Hubei University, Youyi Road 368, Wuchang, Wuhan, Hubei 430062, PR China; Ministry-of-Education Key Laboratory for the Green Preparation and Application of Functional Materials, College of Materials Science and Engineering, Hubei University, Youyi Road 368, Wuchang, Wuhan, Hubei 430062, PR China
| |
Collapse
|
30
|
Rasheed PA, Sandhyarani N. A highly sensitive DNA sensor for attomolar detection of the BRCA1 gene: signal amplification with gold nanoparticle clusters. Analyst 2015; 140:2713-8. [DOI: 10.1039/c5an00004a] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Gold nanoparticle clusters were successfully implemented signal amplification in an electrochemical DNA sensor.
Collapse
Affiliation(s)
- P. Abdul Rasheed
- Nanoscience Research Laboratory
- School of Nano Science and Technology
- National Institute of Technology Calicut
- Calicut
- India
| | - N. Sandhyarani
- Nanoscience Research Laboratory
- School of Nano Science and Technology
- National Institute of Technology Calicut
- Calicut
- India
| |
Collapse
|
31
|
Dou B, Yang C, Chai Y, Yuan R, Xiang Y. Target-induced reconfiguration of DNA probes for recycling amplification and signal-on electrochemical detection of hereditary tyrosinemia type I gene. Analyst 2015; 140:5981-6. [DOI: 10.1039/c5an01006c] [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
The presence of the target gene switches the dsDNA probes into active substrates for exonuclease III and leads to target recycling amplification for signal-on sensitive electrochemical detection of DNA.
Collapse
Affiliation(s)
- Baoting Dou
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry
- Ministry of Education
- School of Chemistry and Chemical Engineering
- Southwest University
- Chongqing 400715
| | - Cuiyun Yang
- 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
| | - 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
| |
Collapse
|
32
|
Khoshfetrat SM, Mehrgardi MA. Amplified electrochemical genotyping of single-nucleotide polymorphisms using a graphene–gold nanoparticles modified glassy carbon platform. RSC Adv 2015. [DOI: 10.1039/c5ra03794h] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
A triple signal amplification strategy for the single nucleotide polymorphisms (SNPs) genotyping is reported using the graphene–gold nanoparticles (GR–AuNPs) as a sensitive platform and monobase-modified silver and gold nanoparticles (M-NPs).
Collapse
|
33
|
Liu S, Liu T, Wang L. Label-free, isothermal and ultrasensitive electrochemical detection of DNA and DNA 3′-phosphatase using a cascade enzymatic cleavage strategy. Chem Commun (Camb) 2015; 51:176-9. [DOI: 10.1039/c4cc08140d] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A label-free, isothermal and cascade enzymatic cleavage strategy was developed for the ultrasensitive electrochemical detection of DNA and DNA 3′-phosphatase.
Collapse
Affiliation(s)
- Shufeng Liu
- Key Laboratory of Sensor Analysis of Tumor Marker
- Ministry of Education
- College of Chemistry and Molecular Engineering
- Qingdao University of Science and Technology
- Qingdao 266042
| | - Tao Liu
- Key Laboratory of Sensor Analysis of Tumor Marker
- Ministry of Education
- College of Chemistry and Molecular Engineering
- Qingdao University of Science and Technology
- Qingdao 266042
| | - Li Wang
- Key Laboratory of Sensor Analysis of Tumor Marker
- Ministry of Education
- College of Chemistry and Molecular Engineering
- Qingdao University of Science and Technology
- Qingdao 266042
| |
Collapse
|
34
|
Cheng W, Zhang W, Yan Y, Shen B, Zhu D, Lei P, Ding S. A novel electrochemical biosensor for ultrasensitive and specific detection of DNA based on molecular beacon mediated circular strand displacement and rolling circle amplification. Biosens Bioelectron 2014; 62:274-9. [DOI: 10.1016/j.bios.2014.06.056] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2014] [Revised: 06/23/2014] [Accepted: 06/24/2014] [Indexed: 12/23/2022]
|
35
|
Attomolar detection of BRCA1 gene based on gold nanoparticle assisted signal amplification. Biosens Bioelectron 2014; 65:333-40. [PMID: 25461178 DOI: 10.1016/j.bios.2014.10.054] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2014] [Revised: 10/16/2014] [Accepted: 10/17/2014] [Indexed: 02/03/2023]
Abstract
In this work, we report a simple strategy for signal amplification using appropriately functionalized gold nanoparticles in an electrochemical genosensor which led to attomolar detection of breast cancer 1 (BRCA1) gene. The sensor was developed by the layer-by-layer assembly of mercaptopropionic acid (MPA), polyethylene glycol (PEG) functionalized gold nanoparticle (AuNPPEG), capture DNA (DNA-c), target BRCA1 DNA (DNA-t) and gold nanoparticle labeled reporter DNA (DNA-r.AuNP) on gold electrode. PEG functionalized gold nanoparticles on the MPA surface provided good electron conducting path nullifying the insulating effect of MPA and also act as a proper immobilization platform for the DNA-c by the large number of carboxyl groups present on the functionalized gold nanoparticles. We demonstrated that the incorporation of MPA functionalized gold nanoparticles (AuNPMPA) as an electrochemical label in this sensor design could significantly enhance the sensitivity in the detection. The DNA hybridization of DNA-r.AuNP with target probe was measured by chronoamperometry, electrochemical impedance spectroscopy (EIS), and scanning tunnelling spectroscopy (STS). Electrochemical quartz crystal microbalance (EQCM) experiments were used to support the detection and also to calculate the number of adsorbed molecules on the surface. Under optimum conditions the present sensor exhibited high sensitivity and a very low detection limit of 50attomolar DNA target (294.8attogram BRCA1gene/ml). It shows excellent selectivity against non complementary sequences and 3 base mismatch complementary targets. It also shows good reproducibility, stability and reusability and the developed sensor surface is suitable for point-of care applications.
Collapse
|
36
|
Zhang Z, Luo L, Chen G, Ding Y, Deng D, Fan C. Tryptamine functionalized reduced graphene oxide for label-free DNA impedimetric biosensing. Biosens Bioelectron 2014; 60:161-6. [DOI: 10.1016/j.bios.2014.03.067] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2014] [Revised: 03/13/2014] [Accepted: 03/31/2014] [Indexed: 11/30/2022]
|
37
|
Biofunctionalized Gold Nanoparticle-Conducting Polymer Nanocomposite Based Bioelectrode for CRP Detection. Appl Biochem Biotechnol 2014; 174:984-97. [DOI: 10.1007/s12010-014-0984-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2014] [Accepted: 05/19/2014] [Indexed: 10/25/2022]
|
38
|
|
39
|
Rasheed PA, Sandhyarani N. Femtomolar level detection of BRCA1 gene using a gold nanoparticle labeled sandwich type DNA sensor. Colloids Surf B Biointerfaces 2014; 117:7-13. [PMID: 24607518 DOI: 10.1016/j.colsurfb.2014.02.009] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2013] [Revised: 02/03/2014] [Accepted: 02/06/2014] [Indexed: 11/16/2022]
Abstract
We demonstrate the amplified detection of BRCAI gene based on the gold nanoparticle labeled DNA sensor. The sensor was based on a "sandwich" detection strategy, which involved an immobilized capture probe DNA (DNA-c), Target DNA (DNA-t) and gold nanoparticle conjugated reporter probe DNA (DNA-r.AuNP). The sensor surface was characterized by scanning electron microscopy (SEM) and scanning tunneling microscopy (STM). Detection capability of the sensor was studied with I-V measurements using either scanning tunneling microscopy (STM) or Keithley 2400 Source Meter SMU Instrument. The DNA sensor could detect up to 1 fM DNA target (5.896 fg of BRCA 1 gene/ml) and exhibited excellent selectivity against noncomplementary sequences and three base mismatch complementary targets. Good reproducibility, high sensitivity, good stability and reusability of the developed sensor surface showed its application in early cancer diagnosis.
Collapse
Affiliation(s)
- P Abdul Rasheed
- Nanoscience Research Laboratory, School of Nano Science and Technology, National Institute of Technology Calicut, Calicut, Kerala, India
| | - N Sandhyarani
- Nanoscience Research Laboratory, School of Nano Science and Technology, National Institute of Technology Calicut, Calicut, Kerala, India.
| |
Collapse
|
40
|
Gracie K, Correa E, Mabbott S, Dougan JA, Graham D, Goodacre R, Faulds K. Simultaneous detection and quantification of three bacterial meningitis pathogens by SERS. Chem Sci 2014. [DOI: 10.1039/c3sc52875h] [Citation(s) in RCA: 118] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
We report the use of a SERS based DNA detection assay for the multiplexed, quantification of three bacterial meningitis pathogens.
Collapse
Affiliation(s)
- Kirsten Gracie
- Centre of Molecular Nanometrology
- WestCHEM
- Department of Pure and Applied Chemistry
- University of Strathclyde
- Glasgow, UK
| | - Elon Correa
- School of Chemistry and Manchester Institute of Biotechnology
- University of Manchester
- Manchester, UK
| | - Samuel Mabbott
- Centre of Molecular Nanometrology
- WestCHEM
- Department of Pure and Applied Chemistry
- University of Strathclyde
- Glasgow, UK
| | - Jennifer A. Dougan
- Centre of Molecular Nanometrology
- WestCHEM
- Department of Pure and Applied Chemistry
- University of Strathclyde
- Glasgow, UK
| | - Duncan Graham
- Centre of Molecular Nanometrology
- WestCHEM
- Department of Pure and Applied Chemistry
- University of Strathclyde
- Glasgow, UK
| | - Royston Goodacre
- School of Chemistry and Manchester Institute of Biotechnology
- University of Manchester
- Manchester, UK
| | - Karen Faulds
- Centre of Molecular Nanometrology
- WestCHEM
- Department of Pure and Applied Chemistry
- University of Strathclyde
- Glasgow, UK
| |
Collapse
|
41
|
Elshafey R, Tavares AC, Siaj M, Zourob M. Electrochemical impedance immunosensor based on gold nanoparticles–protein G for the detection of cancer marker epidermal growth factor receptor in human plasma and brain tissue. Biosens Bioelectron 2013; 50:143-9. [DOI: 10.1016/j.bios.2013.05.063] [Citation(s) in RCA: 108] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2013] [Revised: 05/28/2013] [Accepted: 05/29/2013] [Indexed: 02/08/2023]
|
42
|
Electrochemically reduced graphene–gold nano particle composite on indium tin oxide for label free immuno sensing of estradiol. Electrochim Acta 2013. [DOI: 10.1016/j.electacta.2013.10.128] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
|
43
|
A DNA machine for sensitive and homogeneous DNA detection via lambda exonuclease assisted amplification. Talanta 2013; 115:819-22. [DOI: 10.1016/j.talanta.2013.06.062] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2013] [Revised: 06/25/2013] [Accepted: 06/28/2013] [Indexed: 12/31/2022]
|
44
|
Hou L, Cui Y, Xu M, Gao Z, Huang J, Tang D. Graphene oxide-labeled sandwich-type impedimetric immunoassay with sensitive enhancement based on enzymatic 4-chloro-1-naphthol oxidation. Biosens Bioelectron 2013; 47:149-56. [DOI: 10.1016/j.bios.2013.02.035] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2012] [Revised: 02/22/2013] [Accepted: 02/25/2013] [Indexed: 02/07/2023]
|
45
|
Zhang XY, Zhou LY, Luo HQ, Li NB. A sensitive and label-free impedimetric biosensor based on an adjunct probe. Anal Chim Acta 2013; 776:11-6. [DOI: 10.1016/j.aca.2013.03.030] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2012] [Revised: 03/04/2013] [Accepted: 03/12/2013] [Indexed: 11/27/2022]
|
46
|
Gao ZF, Gao JB, Zhou LY, Zhang Y, Si JC, Luo HQ, Li NB. Rapid assembly of ssDNA on gold electrode surfaces at low pH and high salt concentration conditions. RSC Adv 2013. [DOI: 10.1039/c3ra40810h] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
|
47
|
Sub-femtomolar electrochemical detection of DNA using surface circular strand-replacement polymerization and gold nanoparticle catalyzed silver deposition for signal amplification. Biosens Bioelectron 2013; 39:199-203. [DOI: 10.1016/j.bios.2012.07.035] [Citation(s) in RCA: 60] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2012] [Revised: 07/19/2012] [Accepted: 07/20/2012] [Indexed: 11/19/2022]
|
48
|
Pelossof G, Tel-Vered R, Shimron S, Willner I. Controlling interfacial electron transfer and electrocatalysis by pH- or ion-switchable DNA monolayer-modified electrodes. Chem Sci 2013. [DOI: 10.1039/c2sc22193d] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
|