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Graphene quantum dots: synthesis, properties, and applications to the development of optical and electrochemical sensors for chemical sensing. Mikrochim Acta 2022; 189:258. [PMID: 35701638 DOI: 10.1007/s00604-022-05353-y] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2022] [Accepted: 05/24/2022] [Indexed: 10/18/2022]
Abstract
GQDs exhibits exceptional electrochemical activity owing to their active edge sites that make them very attractive for biosensing applications. However, their use in the design of new biosensing devices for application to the detection and quantification of toxins, pathogens, and clinical biomarkers has so far not investigated in detail. In this regard, herein we provide a detailed review on various methodologies employed for the synthesis of GQDs, including bottom-up and top-down approaches, with a special focus on their applications in biosensing via fluorescence, photoluminescence, chemiluminescence, electrochemiluminescence, fluorescence resonance energy transfer, and electrochemical techniques. We believe that this review will shed light on the critical issues and widen the applications of GQDs for the design of biosensors with improved analytical response for future applications. HIGHLIGHTS: • Properties of GQDs play a critical role in biosensing applications. • Synthesis of GQDs using top-down and bottom-up approaches is discussed comprehensively. • Overview of advancements in GQD-based sensors over the last decade. • Methods for the design of selective and sensitive GQD-based sensors. • Challenges and opportunities for future GQD-based sensors.
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Zhou Z, Chen D, Dong S, Li N, Xu Q, Li H, He J, Lu J. Enhancing the Photodegradation Property of NO through the Construction of a SrTiO 3/GQDs/NH 2-UiO-66 Heterojunction. Ind Eng Chem Res 2022. [DOI: 10.1021/acs.iecr.1c04894] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Zhou Zhou
- Collaborative Innovation Center of Suzhou Nano Science and Technology, College of Chemistry Chemical Engineering and Materials Science, Soochow University, 199 Ren’ai Road, Suzhou 215123, P. R. China
| | - Dongyun Chen
- Collaborative Innovation Center of Suzhou Nano Science and Technology, College of Chemistry Chemical Engineering and Materials Science, Soochow University, 199 Ren’ai Road, Suzhou 215123, P. R. China
| | - Shihong Dong
- Suzhou Shijing Technology Co., Ltd., 58 Jinrui Road, Suzhou 215137, P. R. China
| | - Najun Li
- Collaborative Innovation Center of Suzhou Nano Science and Technology, College of Chemistry Chemical Engineering and Materials Science, Soochow University, 199 Ren’ai Road, Suzhou 215123, P. R. China
| | - Qingfeng Xu
- Collaborative Innovation Center of Suzhou Nano Science and Technology, College of Chemistry Chemical Engineering and Materials Science, Soochow University, 199 Ren’ai Road, Suzhou 215123, P. R. China
| | - Hua Li
- Collaborative Innovation Center of Suzhou Nano Science and Technology, College of Chemistry Chemical Engineering and Materials Science, Soochow University, 199 Ren’ai Road, Suzhou 215123, P. R. China
| | - Jinghui He
- Collaborative Innovation Center of Suzhou Nano Science and Technology, College of Chemistry Chemical Engineering and Materials Science, Soochow University, 199 Ren’ai Road, Suzhou 215123, P. R. China
| | - Jianmei Lu
- Collaborative Innovation Center of Suzhou Nano Science and Technology, College of Chemistry Chemical Engineering and Materials Science, Soochow University, 199 Ren’ai Road, Suzhou 215123, P. R. China
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Wang S. Construction of DNA Biosensors for Mercury (II) Ion Detection Based on Enzyme-Driven Signal Amplification Strategy. Biomolecules 2021; 11:biom11030399. [PMID: 33800447 PMCID: PMC8001444 DOI: 10.3390/biom11030399] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2021] [Revised: 03/04/2021] [Accepted: 03/05/2021] [Indexed: 02/03/2023] Open
Abstract
Mercury ion (Hg2+) is a well-known toxic heavy metal ion. It is harmful for human health even at low concentrations in the environment. Therefore, it is very important to measure the level of Hg2+. Many methods, reviewed in several papers, have been established on DNA biosensors for detecting Hg2+. However, few reviews on the strategy of enzyme-driven signal amplification have been reported. In this paper, we reviewed this topic by dividing the enzymes into nucleases and DNAzymes according to their chemical nature. Initially, we introduce the nucleases including Exo III, Exo I, Nickase, DSN, and DNase I. In this section, the Exo III-driven signal amplification strategy was described in detail. Because Hg2+ can help ssDNA fold into dsDNA by T-Hg-T, and the substrate of Exo III is dsDNA, Exo III can be used to design Hg2+ biosensor very flexibly. Then, the DNAzyme-assisted signal amplification strategies were reviewed in three categories, including UO22+-specific DNAzymes, Cu2+-specific DNAzymes and Mg2+-specific DNAzymes. In this section, the Mg2+-specific DNAzyme was introduced in detail, because this DNAzyme has highly catalytic activity, and Mg2+ is very common ion which is not harmful to the environment. Finally, the challenges and future perspectives were discussed.
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Affiliation(s)
- Shuchang Wang
- School of Life Sciences, East China Normal University, Shanghai 200241, China
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4
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Hao H, Wang J, Lv Q, Jiao Y, Li J, Li W, Akpinar I, Shen W, He G. Interfacial engineering of reduced graphene oxide for high-performance supercapacitor materials. J Electroanal Chem (Lausanne) 2020. [DOI: 10.1016/j.jelechem.2020.114679] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Gao J, Li Y, Li W, Zeng C, Xi F, Huang J, Cui L. 2'- O-Methyl molecular beacon: a promising molecular tool that permits elimination of sticky-end pairing and improvement of detection sensitivity. RSC Adv 2020; 10:41618-41624. [PMID: 35516551 PMCID: PMC9057772 DOI: 10.1039/d0ra07341e] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2020] [Accepted: 10/20/2020] [Indexed: 01/24/2023] Open
Abstract
An innovative 2'-O-methyl molecular beacon (MB) has been designed and prepared with improved thermal stability and unique nuclease resistance. The employment of 2'-O-methyl MBs helps efficiently suppress the background signal, while DNase I is responsible for the signal amplification and elimination of sticky-end pairing. The coupled use of 2'-O-methyl MBs and DNase I makes it possible to develop an enzyme-aided strategy for amplified detection of DNA targets in a sensitive and specific fashion. The analysis requires only mix-and-measure steps that can be accomplished within half an hour. The detection sensitivity is theoretically determined as 27.4 pM, which is nearly 200-fold better than that of the classic MB-based assay. This proposed sensing system also shows desired selectivity. All these features are of great importance for the design and application of MBs in biological, chemical, and biomedical fields.
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Affiliation(s)
- Jiafeng Gao
- Department of Chemistry, Zhejiang Sci-Tech University Hangzhou 310008 P. R. China
| | - Yang Li
- Biomaterials Research Center, School of Biomedical Engineering, Southern Medical University Guangzhou 510515 P. R. China
| | - Wenqin Li
- Biomaterials Research Center, School of Biomedical Engineering, Southern Medical University Guangzhou 510515 P. R. China
| | - Chaofei Zeng
- Department of Chemistry, Zhejiang Sci-Tech University Hangzhou 310008 P. R. China
| | - Fengna Xi
- Department of Chemistry, Zhejiang Sci-Tech University Hangzhou 310008 P. R. China
| | - Jiahao Huang
- Biomaterials Research Center, School of Biomedical Engineering, Southern Medical University Guangzhou 510515 P. R. China
| | - Liang Cui
- Department of Chemistry, Zhejiang Sci-Tech University Hangzhou 310008 P. R. China
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Mansuriya BD, Altintas Z. Applications of Graphene Quantum Dots in Biomedical Sensors. SENSORS (BASEL, SWITZERLAND) 2020; 20:E1072. [PMID: 32079119 PMCID: PMC7070974 DOI: 10.3390/s20041072] [Citation(s) in RCA: 89] [Impact Index Per Article: 22.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/25/2020] [Revised: 02/12/2020] [Accepted: 02/13/2020] [Indexed: 01/02/2023]
Abstract
Due to the proliferative cancer rates, cardiovascular diseases, neurodegenerative disorders, autoimmune diseases and a plethora of infections across the globe, it is essential to introduce strategies that can rapidly and specifically detect the ultralow concentrations of relevant biomarkers, pathogens, toxins and pharmaceuticals in biological matrices. Considering these pathophysiologies, various research works have become necessary to fabricate biosensors for their early diagnosis and treatment, using nanomaterials like quantum dots (QDs). These nanomaterials effectively ameliorate the sensor performance with respect to their reproducibility, selectivity as well as sensitivity. In particular, graphene quantum dots (GQDs), which are ideally graphene fragments of nanometer size, constitute discrete features such as acting as attractive fluorophores and excellent electro-catalysts owing to their photo-stability, water-solubility, biocompatibility, non-toxicity and lucrativeness that make them favorable candidates for a wide range of novel biomedical applications. Herein, we reviewed about 300 biomedical studies reported over the last five years which entail the state of art as well as some pioneering ideas with respect to the prominent role of GQDs, especially in the development of optical, electrochemical and photoelectrochemical biosensors. Additionally, we outline the ideal properties of GQDs, their eclectic methods of synthesis, and the general principle behind several biosensing techniques.
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Affiliation(s)
| | - Zeynep Altintas
- Technical University of Berlin, Straße des 17. Juni 124, 10623 Berlin, Germany;
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Nana L, Ruiyi L, Xiulan S, Yongqiang Y, Zaijun L. Dual amplification in a fluorometric acetamiprid assay by using an aptamer, G-quadruplex/hemin DNAzyme, and graphene quantum dots functionalized with D-penicillamine and histidine. Mikrochim Acta 2020; 187:158. [PMID: 32034503 DOI: 10.1007/s00604-020-4127-9] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2019] [Accepted: 01/19/2020] [Indexed: 12/31/2022]
Abstract
D-penicillamine and histidine-functionalized graphene quantum dot (DPA-GQD-His) was synthesized and applied in a fluorometric method for determination of acetamiprid using a G-quadruplex DNAzyme. At first DNA probe (probe 1) consists of a target-specific aptamer with two arms of DNA segments. Probe 1 was hybridized with DNA probe 2 composed of a single DNA sequence with two split G-rich DNA sequences. This leads to the formation of a triplex-to-G-quadruplex (TPGQ). Next, acetamiprid was hybridized with the aptamer in the TPGQ to release free DNA probe 2. The released probe 2, in the presence of of K+, undergoes a structural change into a stem-loop structure (by self-complementary hybridization and Hoogsteen hydrogen bonding) that bears a G-quadruplex structure. This is followed by conjugation with hemin to form the G-quadruplex/hemin DNAzyme. The DNAzyme catalyzes the oxidation of o-phenylenediamine by H2O2 to produce a yellow fluorescent product with excitation/emission maxima at 420/560 nm. The oxidation product interacts with DPA-GQD-His to achieve a rapid energy transfer between DPA-GQD-His and oxidation product. This increases the fluorescence of the oxidation product and quenches the fluorescence of DPA-GQD-His. DPA-GQD-His also improves the catalytic activity of DNAzyme towards oxidation of ophenylenediamine oxidization and enhances fluorometric response to acetamiprid. The assay works in the 1.0 fM to 1.0 nM acetamiprid concentration range and has a 0.38 fM detection limit. It was successfully applied to the determination of acetamiprid in tea. Graphical abstractThe study reported one double amplification strategy for ultrasensitive fluorescence detection of acetamiprid in tea with D-penicillamine and histidine-functionalized graphene quantum dots and G-quadruplex/heminDNAzyme. The analtyical method exhibits ultra high sensitivity, selectivity and rapidity of fluorescence response to acetamiprid.
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Affiliation(s)
- Li Nana
- School of Chemical and Material Engineering, Jiangnan University, Wuxi, 214122, China
| | - Li Ruiyi
- School of Pharmaceutical Science, Jiangnan University, Wuxi, 214122, China
| | - Sun Xiulan
- School of Food Science and Technology, Jiangnan University, Wuxi, 214122, China
| | - Yang Yongqiang
- National Graphene Product Quality Supervision and Inspection Center, Jiangsu Province Special Equipment Safety Supervision and Inspection Institute Branch, Wuxi, 214071, China
| | - Li Zaijun
- School of Chemical and Material Engineering, Jiangnan University, Wuxi, 214122, China.
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8
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Jin R, Kong D, Yan X, Zhao X, Li H, Liu F, Sun P, Lin Y, Lu G. Integrating Target-Responsive Hydrogels with Smartphone for On-Site ppb-Level Quantitation of Organophosphate Pesticides. ACS APPLIED MATERIALS & INTERFACES 2019; 11:27605-27614. [PMID: 31291083 DOI: 10.1021/acsami.9b09849] [Citation(s) in RCA: 50] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Precise on-site profiling of organophosphate pesticides (OPs) is of significant importance for monitoring pollution and estimating poisoning. Herein, we designed a simple and convenient portable kit based on Ag+-responsive hydrogels for accurate detection of OPs. The newly developed hydrogels employed o-phenylenediamine (OPD) and silicon quantum dots (SiQDs) as indicator, which possessed ratiometric response. In this sensor, OPs as inhibitor of acetylcholinesterase prevented the generation of thiocholine, which blocked the formation of metal-polymer with Ag+, further triggered the oxidation of OPD to yield yellow 2,3-diaminophenazine (DAP) with fluorescence emission at 557 nm. The fluorescence intensity of SiQDs (444 nm) was quenched by DAP through inner filter effect (IFE) process, emerging a typical ratiometric response. Interestingly, the ratiometric signal of kit, which was recorded by smartphone's camera, can be transduced by ImageJ software into the hue parameter that was linearly proportional to the concentration of OPs. The simplicity of portable kit combined with smartphone operation, which possessed high sensitivity (detection limit <10 ng mL-1) and rapid sample-to-answer detection time (45 min) in agricultural sample, indicating that the methodology offered a new sight for portable monitoring of food safety and human health.
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Affiliation(s)
- Rui Jin
- State Key Laboratory on Integrated Optoelectronics, Jilin Key Laboratory on Advanced Gas Sensor, College of Electronic Science and Engineering , Jilin University , Changchun 130012 , People's Republic of China
| | - Deshuai Kong
- State Key Laboratory on Integrated Optoelectronics, Jilin Key Laboratory on Advanced Gas Sensor, College of Electronic Science and Engineering , Jilin University , Changchun 130012 , People's Republic of China
| | - Xu Yan
- State Key Laboratory on Integrated Optoelectronics, Jilin Key Laboratory on Advanced Gas Sensor, College of Electronic Science and Engineering , Jilin University , Changchun 130012 , People's Republic of China
| | - Xu Zhao
- State Key Laboratory on Integrated Optoelectronics, Jilin Key Laboratory on Advanced Gas Sensor, College of Electronic Science and Engineering , Jilin University , Changchun 130012 , People's Republic of China
| | - Hongxia Li
- State Key Laboratory on Integrated Optoelectronics, Jilin Key Laboratory on Advanced Gas Sensor, College of Electronic Science and Engineering , Jilin University , Changchun 130012 , People's Republic of China
| | - Fangmeng Liu
- State Key Laboratory on Integrated Optoelectronics, Jilin Key Laboratory on Advanced Gas Sensor, College of Electronic Science and Engineering , Jilin University , Changchun 130012 , People's Republic of China
| | - Peng Sun
- State Key Laboratory on Integrated Optoelectronics, Jilin Key Laboratory on Advanced Gas Sensor, College of Electronic Science and Engineering , Jilin University , Changchun 130012 , People's Republic of China
| | - Yuehe Lin
- School of Mechanical and Materials Engineering , Washington State University , Pullman , Washington 99164 , United States
| | - Geyu Lu
- State Key Laboratory on Integrated Optoelectronics, Jilin Key Laboratory on Advanced Gas Sensor, College of Electronic Science and Engineering , Jilin University , Changchun 130012 , People's Republic of China
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Bigdeli A, Ghasemi F, Abbasi-Moayed S, Shahrajabian M, Fahimi-Kashani N, Jafarinejad S, Farahmand Nejad MA, Hormozi-Nezhad MR. Ratiometric fluorescent nanoprobes for visual detection: Design principles and recent advances - A review. Anal Chim Acta 2019; 1079:30-58. [PMID: 31387719 DOI: 10.1016/j.aca.2019.06.035] [Citation(s) in RCA: 163] [Impact Index Per Article: 32.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2018] [Revised: 06/11/2019] [Accepted: 06/13/2019] [Indexed: 02/06/2023]
Abstract
Signal generation techniques for visual detection of analytes have received a great deal of attention in various sensing fields. These approaches are considered to be advantageous when instrumentation cannot be employed, such as for on-site assays, point-of-care tests, and he althcare diagnostics in resource-constrained areas. Amongst various visual detection approaches explored for non-invasive quantitative measurements, ratiometric fluorescence sensing has received particular attention as a potential method to overcome the limitations of intensity-based probes. This technique relies on changes in the intensity of two or more emission bands (induced by an analyte), resulting in an effective internal referencing which improves the sensitivity of the detection. The self-calibration, together with the unique optophysical properties of nanoparticles (NPs) have made the ratiometric fluorescent nanoprobes more sensitive and reliable, which in turn, can result in more precise visual detection of the analytes. Over the past few years, a vast number of ratiometric sensing probes using nanostructured fluorophores have been designed and reported for a wide variety of sensing, imaging, and biomedical applications. In this work, a review on the NP-based ratiometric fluorescent sensors has been presented to meticulously elucidate their development, advances and challenges. With a special emphasis on visual detection, the most important steps in the design of fluorescent ratiometric nanoprobes have been given and based on different classes of analytes, recent applications of fluorescent ratiometric nanoprobes have been summarized. The challenges for the future use of the technique investigated in this review have been also discussed.
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Affiliation(s)
- Arafeh Bigdeli
- Chemistry Department, Sharif University of Technology, Tehran, 11155-9516, Iran; Institute for Nanoscience and Nanotechnology, Sharif University of Technology, Tehran, 11155-9516, Iran
| | - Forough Ghasemi
- Chemistry Department, Sharif University of Technology, Tehran, 11155-9516, Iran; Department of Nanotechnology, Agricultural Biotechnology Research Institute of Iran (ABRII), Agricultural Research, Education, and Extension Organization (AREEO), Karaj, 3135933151, Iran
| | | | - Maryam Shahrajabian
- Chemistry Department, Sharif University of Technology, Tehran, 11155-9516, Iran
| | | | - Somayeh Jafarinejad
- Faculty of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, 1985717443, Iran
| | | | - M Reza Hormozi-Nezhad
- Chemistry Department, Sharif University of Technology, Tehran, 11155-9516, Iran; Institute for Nanoscience and Nanotechnology, Sharif University of Technology, Tehran, 11155-9516, Iran.
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10
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Ding L, Zhao Z, Li D, Wang X, Chen J. An "off-on" fluorescent sensor for copper ion using graphene quantum dots based on oxidation of l-cysteine. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2019; 214:320-325. [PMID: 30798213 DOI: 10.1016/j.saa.2019.02.048] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/09/2018] [Revised: 11/25/2018] [Accepted: 02/16/2019] [Indexed: 06/09/2023]
Abstract
A simple and highly efficient "off-on" fluorescent sensor based on grapheme quantum dots (GQDs) for Cu2+ was developed. In this sensing platform, the fluorescence of GQDs was quenched in the presence of 2,4-dinitrophenylcysteine (DNPC), which is the reaction product of 1-chloro-2,4-dinitrobenzene (CDNB) and l-cysteine, owing to the spectral overlap between the absorption of DNPC and the excitation of GQDs. In the presence of Cu2+, l-cysteine was catalytically oxidized to l-cystine by O2, resulting in the reduction of DNPC. Thus, the fluorescence of GQDs was recovery. Based on this, the fluorescent detection of Cu2+ could be achieved. The proposed sensing strategy offered a selective identification of Cu2+ with a detection limit of 4.5 nM. Additionally, the practical application of this assay for Cu2+ determination in real water samples was also demonstrated.
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Affiliation(s)
- Longhua Ding
- Institute for Advanced Interdisciplinary Research, University of Jinan, Jinan 250022, PR China.
| | - Zhongyao Zhao
- Department of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, PR China
| | - Dongjun Li
- Department of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, PR China
| | - Xue Wang
- Department of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, PR China
| | - Jialin Chen
- Department of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, PR China
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11
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Rapid cancer diagnosis by highly fluorescent carbon nanodots-based imaging. Anal Bioanal Chem 2019; 411:967-972. [PMID: 30604036 DOI: 10.1007/s00216-018-1500-1] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2018] [Revised: 10/28/2018] [Accepted: 11/15/2018] [Indexed: 02/07/2023]
Abstract
Carbon dots (Cdots) with bright green fluorescence were applied to the rapid and selective cell imaging for a variety of cell lines. Different labeling distributions of hepatoma cells (HepG2) and normal human liver cells (LO2) were achieved using Cdots as imaging agents. For HepG2 cells, the Cdots could rapidly permeate the cell membrane and diffuse into the cytoplasm and nucleus within 3 min, and retained their location in the targets for 24 h. However, the Cdots exhibited bright fluorescence only in the cytoplasm of LO2 cell lines. Moreover, the Cdots were almost non-cytotoxic and exhibited superior photostability over a wide range of pH. Therefore, these Cdots have great potential for rapid, luminous and selective bioimaging applications, and are expected to be used as a nucleus-staining agent in cancer diagnosis. Graphical abstract ᅟ.
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Mittal S, Thakur S, Mantha AK, Kaur H. Bio-analytical applications of nicking endonucleases assisted signal-amplification strategies for detection of cancer biomarkers -DNA methyl transferase and microRNA. Biosens Bioelectron 2019; 124-125:233-243. [DOI: 10.1016/j.bios.2018.10.001] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2018] [Revised: 09/27/2018] [Accepted: 10/01/2018] [Indexed: 12/31/2022]
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Diao J, Wang T, Li L. Graphene quantum dots as nanoprobes for fluorescent detection of propofol in emulsions. ROYAL SOCIETY OPEN SCIENCE 2019; 6:181753. [PMID: 30800401 PMCID: PMC6366175 DOI: 10.1098/rsos.181753] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/17/2018] [Accepted: 11/23/2018] [Indexed: 05/02/2023]
Abstract
We report a new fluorescent detection method for propofol based on graphene quantum dots (GQDs). Citric acid (CA) was selected as the carbon precursor, and fluorescent GQDs were prepared by carbonizing CA. The product, which efficiently quenched the fluorescence of GQDs, could be obtained through the oxidation of propofol in the presence of horseradish peroxidase and hydrogen peroxide. The fluorescence intensity ratio of GQDs (F/F 0) was positively correlated with the concentration of propofol, which ranged within 5.34-89.07 mg l-1, the limit of detection was 0.5 mg l-1 and the limit of quantity was 5.34 mg l-1. The developed fluorescence method reported in the present study is simple, sensitive, reproducible, and can serve in determining propofol contents in emulsions.
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Affiliation(s)
| | | | - Li Li
- Author for correspondence: Li Li e-mail:
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14
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Graphitic C 3N 4 nanosheet and hemin/G-quadruplex DNAzyme-based label-free chemiluminescence aptasensing for biomarkers. Talanta 2018; 192:400-406. [PMID: 30348410 DOI: 10.1016/j.talanta.2018.09.066] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2018] [Revised: 09/10/2018] [Accepted: 09/18/2018] [Indexed: 12/30/2022]
Abstract
Here we first reported that graphitic carbon nitride nanosheet (g-C3N4 NS) could effectively quench the chemiluminescence (CL) of luminol-hydrogen peroxide (H2O2) system. According to the new discovery, a label-free and homogeneous CL aptasensing platform was designed for sensitive detecting of biomarkers. In the absence of target, DNA probe containing hemin/G-quadruplex DNAzyme structure was adsorbed on the surface of g-C3N4 NS, causing the CL quenching of luminol through an electron transfer process. However, in the presence of the target, a DNA-DNA duplex was formed due to DNA hybridization reaction and target recognition effect, which could not be adsorbed onto the g-C3N4 NS surface because of its weak affinity. Thus, the electron transfer was blocked and the CL emission of luminol could be enhanced. The proposed CL aptasensor could detect carcinoembryonic antigen (CEA) with a detection limit of 63.0 pg/mL and it can also be used as a general detecting strategy for adenosinetriphosphate (ATP) detection. This aptasensing platform exhibited high sensitivity toward biomarkers and the probe need not be labeled, showing great promise for disease diagnosis.
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15
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Wang L, Zhu F, Chen M, Zhu Y, Xiao J, Yang H, Chen X. Rapid and visual detection of aflatoxin B1 in foodstuffs using aptamer/G-quadruplex DNAzyme probe with low background noise. Food Chem 2018; 271:581-587. [PMID: 30236719 DOI: 10.1016/j.foodchem.2018.08.007] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2018] [Revised: 07/20/2018] [Accepted: 08/03/2018] [Indexed: 02/08/2023]
Abstract
Contamination of foods by aflatoxin B1 (AFB1) is a common serious problem. To improve the efficiency of AFB1 detection, this study aims to develop a sensitive aptasensor for detection of AFB1 in food samples based on the catalytic effect of aptamer/G-quadruplex DNAzyme probe. The resulting reassembly of this probe in the presence of hemin and K+ catalyzes the generation of fluorescent 2,3-diaminophenazine (DAP) from o-phenylenediamine (OPD). Interestingly, we first found that the high background induced by the superfluous hemin can be effectively suppressed with the aid of sequential adsorption and magnetic separation by magnetic oxidized multiwall carbon nanotubes (Fe3O4@oMWCNTs). This aptasensor exhibits a high sensitivity toward AFB1 with a detection limit of 0.02 ng/mL. The assay also shows higher selectivity for AFB1 compared to other reported agents and can be employed to detect AFB1 in foodstuffs, which might find broad practical applications in other food contaminants determination.
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Affiliation(s)
- Lumin Wang
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, Hunan, China.
| | - Fawei Zhu
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, Hunan, China.
| | - Miao Chen
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, Hunan, China.
| | - YuQiu Zhu
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, Hunan, China.
| | - Jianbo Xiao
- Institute of Chinese Medical Sciences, State Key Laboratory of Quality Research in Chinese Medicine, University of Macau, Taipa, Macau, China.
| | - Hua Yang
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, Hunan, China.
| | - Xiaoqing Chen
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, Hunan, China; Hunan Provincial Key Laboratory of Efficient and Clean Utilization of Manganese Resources, Central South University, Changsha 410083, Hunan, China.
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16
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Li F, Liu J, Hu Y, Deng N, He J. An ultrasensitive label-free colorimetric assay for glutathione based on Ag+ regulated autocatalytic oxidation of o-phenylenediamine. Talanta 2018; 186:330-336. [DOI: 10.1016/j.talanta.2018.04.078] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2017] [Revised: 04/09/2018] [Accepted: 04/25/2018] [Indexed: 11/30/2022]
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17
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Xu Y, Wang X, Zhang WL, Lv F, Guo S. Recent progress in two-dimensional inorganic quantum dots. Chem Soc Rev 2018; 47:586-625. [DOI: 10.1039/c7cs00500h] [Citation(s) in RCA: 181] [Impact Index Per Article: 30.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
This review critically summarizes recent progress in the categories, synthetic routes, properties, functionalization and applications of 2D materials-based quantum dots (QDs).
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Affiliation(s)
- Yuanhong Xu
- College of Life Sciences
- Laboratory of Fiber Materials and Modern Textiles
- the Growing Base for State Key Laboratory
- Qingdao University
- Qingdao 266071
| | - Xiaoxia Wang
- College of Life Sciences
- Laboratory of Fiber Materials and Modern Textiles
- the Growing Base for State Key Laboratory
- Qingdao University
- Qingdao 266071
| | - Wen Ling Zhang
- College of Life Sciences
- Laboratory of Fiber Materials and Modern Textiles
- the Growing Base for State Key Laboratory
- Qingdao University
- Qingdao 266071
| | - Fan Lv
- Department of Materials Science and Engineering
- College of Engineering
- Peking University
- Beijing 100871
- China
| | - Shaojun Guo
- Department of Materials Science and Engineering
- College of Engineering
- Peking University
- Beijing 100871
- China
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18
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Yang X, Lv J, Yang Z, Yuan R, Chai Y. A Sensitive Electrochemical Aptasensor for Thrombin Detection Based on Electroactive Co-Based Metal-Organic Frameworks with Target-Triggering NESA Strategy. Anal Chem 2017; 89:11636-11640. [PMID: 29019234 DOI: 10.1021/acs.analchem.7b03056] [Citation(s) in RCA: 63] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
In this work, an improved target-triggering nicking enzyme signaling amplification (NESA) strategy as signal enhancer has been fabricated to obtain a sensitive electrochemical thrombin (TB) biosensor combined with PtPd NPs decorated electroactive Co-based metal-organic frameworks (Co-MOFs/PtPdNPs) as a redox mediator. Traditionally, in the NESA strategy, only one of the output double strands DNA is available in the next cycle. However, in this work, all of the output DNA involved in the improved NESA strategies could be further employed, resulting in high utilization of output DNA, which further enhanced signal amplification and sensitivity of the biosensor. In addition, the electroactive Co-MOFs were not only used as nanocarriers but also acted as signal labels, avoiding adding extra redox media. Simultaneously, in the presence of H2O2, PtPd NPs decorated on the Co-MOFs act the same as horseradish peroxidase to promote the oxidation of H2O2, further promoting the conversion of Co2+ to Co3+, leading to electrochemical signal amplification. With such design, the TB biosensor exhibited good sensitivity from 1 pM to 30 nM with a detection limit of 0.32 pM. This new NESA strategy with high utilization of output DNA can supply one efficient approach to improve signal amplification, which also open an avenue for sensitivity enhancement in detection of analytes.
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Affiliation(s)
- Xia Yang
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry (Southwest University), Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University , Chongqing 400715, P. R. China
| | - Jiajia Lv
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry (Southwest University), Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University , Chongqing 400715, P. R. China
| | - Zhehan Yang
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry (Southwest University), Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University , Chongqing 400715, P. R. China
| | - Ruo Yuan
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry (Southwest University), Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University , Chongqing 400715, P. R. China
| | - Yaqin Chai
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry (Southwest University), Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University , Chongqing 400715, P. R. China
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19
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A novel turn-on fluorescent strategy for sensing ascorbic acid using graphene quantum dots as fluorescent probe. Biosens Bioelectron 2017; 92:229-233. [DOI: 10.1016/j.bios.2017.02.005] [Citation(s) in RCA: 99] [Impact Index Per Article: 14.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2016] [Revised: 01/15/2017] [Accepted: 02/03/2017] [Indexed: 02/08/2023]
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20
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Chemiluminescence immunoassay for cardiac troponin T by using silver nanoparticles functionalized with hemin/G-quadruplex DNAzyme on a glass chip array. Mikrochim Acta 2017. [DOI: 10.1007/s00604-017-2331-z] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
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21
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Cheng N, Shang Y, Xu Y, Zhang L, Luo Y, Huang K, Xu W. On-site detection of stacked genetically modified soybean based on event-specific TM-LAMP and a DNAzyme-lateral flow biosensor. Biosens Bioelectron 2017; 91:408-416. [PMID: 28064126 DOI: 10.1016/j.bios.2016.12.066] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2016] [Revised: 12/25/2016] [Accepted: 12/29/2016] [Indexed: 11/26/2022]
Abstract
Stacked genetically modified organisms (GMO) are becoming popular for their enhanced production efficiency and improved functional properties, and on-site detection of stacked GMO is an urgent challenge to be solved. In this study, we developed a cascade system combining event-specific tag-labeled multiplex LAMP with a DNAzyme-lateral flow biosensor for reliable detection of stacked events (DP305423× GTS 40-3-2). Three primer sets, both event-specific and soybean species-specific, were newly designed for the tag-labeled multiplex LAMP system. A trident-like lateral flow biosensor displayed amplified products simultaneously without cross contamination, and DNAzyme enhancement improved the sensitivity effectively. After optimization, the limit of detection was approximately 0.1% (w/w) for stacked GM soybean, which is sensitive enough to detect genetically modified content up to a threshold value established by several countries for regulatory compliance. The entire detection process could be shortened to 120min without any large-scale instrumentation. This method may be useful for the in-field detection of DP305423× GTS 40-3-2 soybean on a single kernel basis and on-site screening tests of stacked GM soybean lines and individual parent GM soybean lines in highly processed foods.
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Affiliation(s)
- Nan Cheng
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Food Science & Nutritional Engineering, China Agricultural University, Beijing 100083, China
| | - Ying Shang
- Yunnan Institute of Food Safety, Kunming University of Science and Technology, Kunming, Yunnan 650500, China
| | - Yuancong Xu
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Food Science & Nutritional Engineering, China Agricultural University, Beijing 100083, China
| | - Li Zhang
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Food Science & Nutritional Engineering, China Agricultural University, Beijing 100083, China
| | - Yunbo Luo
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Food Science & Nutritional Engineering, China Agricultural University, Beijing 100083, China; Beijing Laboratory for Food Quality and Safety, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China
| | - Kunlun Huang
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Food Science & Nutritional Engineering, China Agricultural University, Beijing 100083, China; Beijing Laboratory for Food Quality and Safety, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China
| | - Wentao Xu
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Food Science & Nutritional Engineering, China Agricultural University, Beijing 100083, China; Beijing Laboratory for Food Quality and Safety, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China.
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22
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Gao L, Wang Y, Lu M, Fa M, Yang D, Yao X. Simple method for O-GlcNAc sensitive detection based on graphene quantum dots. RSC Adv 2017. [DOI: 10.1039/c7ra02643a] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023] Open
Abstract
Simple and sensitive method for O-GlcNAc detection in cell lysates based on graphene quantum dots combination; WGA was successfully developed.
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Affiliation(s)
- Li Gao
- School of Chemistry and Chemical Engineering
- University of Chinese Academy of Sciences
- Beijing100049
- PR China
| | - Yiwen Wang
- School of Chemistry and Chemical Engineering
- University of Chinese Academy of Sciences
- Beijing100049
- PR China
| | - Mei Lu
- School of Chemistry and Chemical Engineering
- University of Chinese Academy of Sciences
- Beijing100049
- PR China
| | - Mengmei Fa
- School of Chemistry and Chemical Engineering
- University of Chinese Academy of Sciences
- Beijing100049
- PR China
| | - Dingding Yang
- School of Chemistry and Chemical Engineering
- University of Chinese Academy of Sciences
- Beijing100049
- PR China
| | - Xin Yao
- School of Chemistry and Chemical Engineering
- University of Chinese Academy of Sciences
- Beijing100049
- PR China
- State Key Laboratory of Natural and Biomimetic Drugs
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23
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Pang X, Bian H, Wang W, Liu C, Khan MS, Wang Q, Qi J, Wei Q, Du B. A bio-chemical application of N-GQDs and g-C 3N 4 QDs sensitized TiO 2 nanopillars for the quantitative detection of pcDNA3-HBV. Biosens Bioelectron 2016; 91:456-464. [PMID: 28064131 DOI: 10.1016/j.bios.2016.12.059] [Citation(s) in RCA: 51] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2016] [Revised: 12/15/2016] [Accepted: 12/29/2016] [Indexed: 01/22/2023]
Abstract
Herein, TiO2 nanopillars (NPs)/N-doped graphene quantum dots (N-GQDs)/g-C3N4 QDs heterojunction efficiently suppressed the photogenerated charges recombination and improved photo-to-current conversion efficiency. The introduced N-GQDs and g-C3N4 QDs could result in more effective separation of the photogenerated charges, and thus produce a further increase of the photocurrent. TiO2 NPs/N-GQDs/g-C3N4 QDs were firstly applied as the photoactive materials for the fabrication of the biosensors, and the primers of pcDNA3-HBV were then adsorbed on the TiO2 NPs/N-GQDs/g-C3N4 QDs modified electrode under the activation of EDC/NHS. With increase of the pcDNA3-HBV concentration, the photocurrent reduced once the double helix between the primers and pcDNA3-HBV formed. The developed photoelectrochemical (PEC) biosensor showed a sensitive response to pcDNA3-HBV in a linear range of 0.01 fmol/L to 20nmol/L with a detection limit of 0.005 fmol/L under the optimal conditions. The biosensor exhibited high sensitivity, good selectivity, good stability and reproducibility.
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Affiliation(s)
- Xuehui Pang
- Key Laboratory of Chemical Sensing & Analysis in Universities of Shandong, University of Jinan, Jinan 250022, China
| | - Hongjun Bian
- Department of Emergency, Shandong Provincial Hospital Affiliated to Shandong University, Jinan 250021, China
| | - Weijie Wang
- Key Laboratory of Chemical Sensing & Analysis in Universities of Shandong, University of Jinan, Jinan 250022, China
| | - Cheng Liu
- Key Laboratory of Chemical Sensing & Analysis in Universities of Shandong, University of Jinan, Jinan 250022, China
| | - Malik Saddam Khan
- Key Laboratory of Chemical Sensing & Analysis in Universities of Shandong, University of Jinan, Jinan 250022, China
| | - Qiao Wang
- Key Laboratory of Chemical Sensing & Analysis in Universities of Shandong, University of Jinan, Jinan 250022, China
| | - Jianni Qi
- Central Laboratory, Shandong Provincial Hospital Affiliated to Shandong University, Jinan 250021, China
| | - Qin Wei
- Key Laboratory of Chemical Sensing & Analysis in Universities of Shandong, University of Jinan, Jinan 250022, China.
| | - Bin Du
- Key Laboratory of Chemical Sensing & Analysis in Universities of Shandong, University of Jinan, Jinan 250022, China
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24
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Recent Advance in Chemiluminescence Assay and Its Biochemical Applications. CHINESE JOURNAL OF ANALYTICAL CHEMISTRY 2016. [DOI: 10.1016/s1872-2040(16)60981-7] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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25
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Wang Q, Jiang J, Sui W, Lin X, Liu B. Sensitive Molecularly Imprinted Fluorescence Determination of Pyrethroids using Green Zinc Oxide Quantum Dots. ANAL LETT 2016. [DOI: 10.1080/00032719.2016.1211138] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Qingwei Wang
- Key Laboratory of Preparation and Applications of Environmental Friendly Materials, Jilin Normal University, Ministry of Education, Changchun, China
| | - Jiaqi Jiang
- School of Chemistry, Jilin Normal University, Siping, China
| | - Wei Sui
- School of Chemistry, Jilin Normal University, Siping, China
| | - Xue Lin
- Key Laboratory of Preparation and Applications of Environmental Friendly Materials, Jilin Normal University, Ministry of Education, Changchun, China
| | - Bo Liu
- Key Laboratory of Preparation and Applications of Environmental Friendly Materials, Jilin Normal University, Ministry of Education, Changchun, China
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26
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Lan J, Liu Y, Li L, Wen F, Wu F, Han Z, Sun W, Li C, Chen J. A upconversion luminescene biosensor based on dual-signal amplification for the detection of short DNA species of c-erbB-2 oncogene. Sci Rep 2016; 6:24813. [PMID: 27098295 PMCID: PMC4838860 DOI: 10.1038/srep24813] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2016] [Accepted: 04/05/2016] [Indexed: 11/09/2022] Open
Abstract
High-sensitivity detection of trace amounts of c-erbB-2 oncogene was reported to be equal to or surpass the ability of CA 15-3 for early diagnosis and/or follow-up recurrent screening of breast cancer. Therefore, in the current study, by using upconversion nanoparticles (UCNPs), rare earth-doped NaYF4:Yb(3+)/Er(3+) as the luminescent labels, a upconversion luminescent (UCL) biosensor based on dual-signal amplification of exonuclease III (ExoIII)-assisted target cycles and long-range self-assembly DNA concatamers was developed for the detection of c-erbB-2 oncogene. The proposed biosensor exhibited ultrasensitive detection with limit as low as 40 aM, which may express the potential of being used in trace analysis of c-erbB-2 oncogene and early diagnosis of breast cancer.
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Affiliation(s)
- Jianming Lan
- Department of Basic Chemistry, The School of Pharmacy, Fujian Medical University, Fuzhou, Fujian 350108, P. R. China
| | - Yingxin Liu
- Department of Basic Chemistry, The School of Pharmacy, Fujian Medical University, Fuzhou, Fujian 350108, P. R. China
| | - Li Li
- Department of Basic Chemistry, The School of Pharmacy, Fujian Medical University, Fuzhou, Fujian 350108, P. R. China
| | - Fadi Wen
- Department of Basic Chemistry, The School of Pharmacy, Fujian Medical University, Fuzhou, Fujian 350108, P. R. China
| | - Fang Wu
- Department of Basic Chemistry, The School of Pharmacy, Fujian Medical University, Fuzhou, Fujian 350108, P. R. China
| | - Zhizhong Han
- Department of Basic Chemistry, The School of Pharmacy, Fujian Medical University, Fuzhou, Fujian 350108, P. R. China
| | - Weiming Sun
- Department of Basic Chemistry, The School of Pharmacy, Fujian Medical University, Fuzhou, Fujian 350108, P. R. China
| | - Chunyan Li
- Department of Basic Chemistry, The School of Pharmacy, Fujian Medical University, Fuzhou, Fujian 350108, P. R. China
| | - Jinghua Chen
- Department of Pharmaceutical Analysis, The School of Pharmacy, Fujian Medical University, Fuzhou, Fujian 350108, P. R. China
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