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Xu J, Gui M, Li H, Nie L, Zhao W, Wang S, Yu R. Magnetic beads and GO-assisted enzyme-free signal amplification fluorescent biosensors for disease diagnosis. Anal Chim Acta 2024; 1306:342581. [PMID: 38692785 DOI: 10.1016/j.aca.2024.342581] [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: 06/11/2023] [Revised: 03/26/2024] [Accepted: 04/04/2024] [Indexed: 05/03/2024]
Abstract
Cancer detection is still a major challenge in public health. Identification of oncogene is the first step toward solving this problem. Studies have revealed that various cancers are associated with miRNA expression. Therefore, the sensitive detection of miRNA is substantially important to solve the cancer problem. In this study, let-7a, a representative substance of miRNA, was selected as the detection target. With the assistance of magnetic beads commonly used in biosensors and self-synthesized graphene oxide materials, specificity and sensitivity detection of the target gene let-7a were achieved via protease-free signal amplification. The limit of detection (LOD) was as low as 15.015pM. The fluorescence signal intensity showed a good linear relationship with the logarithm of let-7a concentration. The biosensor could also detect let-7a in complex human serum samples. Overall, this fluorescent biosensor is not only simple to operate, but also strongly specificity to detect let-7a. Therefore, it has substantial potential for application in the early diagnosis of clinical medicine and biological research.
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Affiliation(s)
- Jun Xu
- College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang, 330022, PR China
| | - Minfang Gui
- College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang, 330022, PR China
| | - Hongbo Li
- College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang, 330022, PR China; Key Laboratory of Energy Catalysis and Conversion of Nanchang, Nanchang, 330022, PR China; State Key Laboratory for Chemo/Biosensing and Chemometrics, Hunan University, Changsha, 410082, PR China.
| | - Lanxin Nie
- College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang, 330022, PR China
| | - Weihua Zhao
- College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang, 330022, PR China
| | - Suqin Wang
- College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang, 330022, PR China
| | - Ruqin Yu
- State Key Laboratory for Chemo/Biosensing and Chemometrics, Hunan University, Changsha, 410082, PR China
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Rabiee N, Ahmadi S, Rahimizadeh K, Chen S, Veedu RN. Metallic nanostructure-based aptasensors for robust detection of proteins. NANOSCALE ADVANCES 2024; 6:747-776. [PMID: 38298588 PMCID: PMC10825927 DOI: 10.1039/d3na00765k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/11/2023] [Accepted: 11/29/2023] [Indexed: 02/02/2024]
Abstract
There is a significant need for fast, cost-effective, and highly sensitive protein target detection, particularly in the fields of food, environmental monitoring, and healthcare. The integration of high-affinity aptamers with metal-based nanomaterials has played a crucial role in advancing the development of innovative aptasensors tailored for the precise detection of specific proteins. Aptamers offer several advantages over commonly used molecular recognition methods, such as antibodies. Recently, a variety of metal-based aptasensors have been established. These metallic nanomaterials encompass noble metal nanoparticles, metal oxides, metal-carbon nanotubes, carbon quantum dots, graphene-conjugated metallic nanostructures, as well as their nanocomposites, metal-organic frameworks (MOFs), and MXenes. In general, these materials provide enhanced sensitivity through signal amplification and transduction mechanisms. This review primarily focuses on the advancement of aptasensors based on metallic materials for the highly sensitive detection of protein targets, including enzymes and growth factors. Additionally, it sheds light on the challenges encountered in this field and outlines future prospects. We firmly believe that this review will offer a comprehensive overview and fresh insights into metallic nanomaterials-based aptasensors and their capabilities, paving the way for the development of innovative point-of-care (POC) diagnostic devices.
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Affiliation(s)
- Navid Rabiee
- Centre for Molecular Medicine and Innovative Therapeutics, Health Futures Institute, Murdoch University Perth WA 6150 Australia
- Precision Nucleic Acid Therapeutics, Perron Institute for Neurological and Translational Science Perth WA 6009 Australia
| | - Sepideh Ahmadi
- Student Research Committee, Department of Medical Biotechnology, School of Advanced Technologies in Medicine, Shahid Beheshti University of Medical Sciences Tehran Iran
| | - Kamal Rahimizadeh
- Centre for Molecular Medicine and Innovative Therapeutics, Health Futures Institute, Murdoch University Perth WA 6150 Australia
- Precision Nucleic Acid Therapeutics, Perron Institute for Neurological and Translational Science Perth WA 6009 Australia
| | - Suxiang Chen
- Centre for Molecular Medicine and Innovative Therapeutics, Health Futures Institute, Murdoch University Perth WA 6150 Australia
- Precision Nucleic Acid Therapeutics, Perron Institute for Neurological and Translational Science Perth WA 6009 Australia
| | - Rakesh N Veedu
- Centre for Molecular Medicine and Innovative Therapeutics, Health Futures Institute, Murdoch University Perth WA 6150 Australia
- Precision Nucleic Acid Therapeutics, Perron Institute for Neurological and Translational Science Perth WA 6009 Australia
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Alsam AA. Comparative Investigation of Ultrafast Excited-State Electron Transfer in Both Polyfluorene-Graphene Carboxylate and Polyfluorene-DCB Interfaces. Molecules 2024; 29:634. [PMID: 38338379 PMCID: PMC10856661 DOI: 10.3390/molecules29030634] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2023] [Revised: 01/15/2024] [Accepted: 01/20/2024] [Indexed: 02/12/2024] Open
Abstract
The Photophysical properties, such as fluorescence quenching, and photoexcitation dynamics of bimolecular non-covalent systems consisting of cationic poly[(9,9-di(3,3'-N,N'-trimethyl-ammonium) propyl fluorenyl-2,7-diyl)-alt-co-(9,9-dioctyl-fluorenyl-2,7-diyl)] diiodide salt (PFN) and anionic graphene carboxylate (GC) have been discovered for the first time via steady-state and time-resolved femtosecond transient absorption (TA) spectroscopy with broadband capabilities. The steady-state fluorescence of PFN is quenched with high efficiency by the GC acceptor. Fluorescence lifetime measurements reveal that the quenching mechanism of PFN by GC is static. Here, the quenching mechanisms are well proven via the TA spectra of PFN/GC systems. For PFN/GC systems, the photo electron transfer (PET) and charge recombination (CR) processes are ultrafast (within a few tens of ps) compared to static interactions, whereas for PFN/1,4-dicyanobenzene DCB systems, the PET takes place in a few hundreds of ps (217.50 ps), suggesting a diffusion-controlled PET process. In the latter case, the PFN+•-DCB-• radical ion pairs as the result of the PET from the PFN to DCB are clearly resolved, and they are long-lived. The slow CR process (in 30 ns time scales) suggests that PFN+• and DCB-• may already form separated radical ion pairs through the charge separation (CS) process, which recombine back to the initial state with a characteristic time constant of 30 ns. The advantage of the present positively charged polyfluorene used in this work is the control over the electrostatic interactions and electron transfers in non-covalent polyfluorene/quencher systems in DMSO solution.
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Affiliation(s)
- Amani A Alsam
- Department of Physical Science, College of Science, Jazan University, P.O. Box. 114, Jazan 45142, Saudi Arabia
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Wang Z, Jiang C, Jin Y, Yang J, Zhao Y, Huang L, Yuan Y. Cationic Conjugated Polymer Fluorescence Resonance Energy Transfer for DNA Methylation Assessment to Discriminate the Geographical Origins of Lonicerae japonicae flos. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2023; 71:12346-12356. [PMID: 37539957 DOI: 10.1021/acs.jafc.3c02646] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/05/2023]
Abstract
The flavor and taste of Lonicerae japonicae flos (LJF) products are heavily influenced by geographical origin. Tracing the geographical origin is an important aspect of LJF quality assessment. Here, DNA methylation analysis coupled with chemometrics revealed that, in 10 CpG islands upstream of genes in the chlorogenic acid and iridoid biosynthetic pathways, DNA methylation differences appear close association with LJF geographical origin. DNA methylation status in these CpG islands was determined using the cationic conjugated polymer fluorescence resonance energy transfer method. As a result, LJFs from 39 geographical origins were classified into four groups corresponding to Northern China, Central Plain of China, Southeast China, and Western China, according to cluster analysis and principal component analysis. Our findings contribute to an understanding of the modulation of LJF taste and can assist in understanding how DNA methylation in LJF varies with geographical origin.
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Affiliation(s)
- Zhengpeng Wang
- National Resource Center for Chinese Materia Medica, Chinese Academy of Chinese Medical Sciences (CACMS), Beijing 100700, People's Republic of China
- School of Pharmacy, Jiangsu University, Zhenjiang, Jiangsu 212013, People's Republic of China
| | - Chao Jiang
- National Resource Center for Chinese Materia Medica, Chinese Academy of Chinese Medical Sciences (CACMS), Beijing 100700, People's Republic of China
| | - Yan Jin
- National Resource Center for Chinese Materia Medica, Chinese Academy of Chinese Medical Sciences (CACMS), Beijing 100700, People's Republic of China
| | - Jian Yang
- National Resource Center for Chinese Materia Medica, Chinese Academy of Chinese Medical Sciences (CACMS), Beijing 100700, People's Republic of China
| | - Yuyang Zhao
- National Resource Center for Chinese Materia Medica, Chinese Academy of Chinese Medical Sciences (CACMS), Beijing 100700, People's Republic of China
| | - Luqi Huang
- National Resource Center for Chinese Materia Medica, Chinese Academy of Chinese Medical Sciences (CACMS), Beijing 100700, People's Republic of China
| | - Yuan Yuan
- National Resource Center for Chinese Materia Medica, Chinese Academy of Chinese Medical Sciences (CACMS), Beijing 100700, People's Republic of China
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Liu Y, Meng S, Qin J, Zhang R, He N, Jiang Y, Chen H, Li N, Zhao Y. A fluorescence biosensor based on double-stranded DNA and a cationic conjugated polymer coupled with exonuclease III for acrylamide detection. Int J Biol Macromol 2022; 219:346-352. [PMID: 35934078 DOI: 10.1016/j.ijbiomac.2022.07.251] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2022] [Revised: 07/25/2022] [Accepted: 07/29/2022] [Indexed: 11/05/2022]
Abstract
As a toxic substance on human health produced in food thermal treatment, simple analytical approaches are highly desired for the detection of acrylamide (ACR) in foods. With the aid of exonuclease III (Exo III), a simple fluorescence sensor was proposed based on carboxyfluorescein-labeled double-stranded DNA (FAM-dsDNA) and a cationic conjugated polymer (PFP). Fluorescence resonance energy transfer (FRET) efficiency between FAM and PFP was changed with and without ACR. When ACR was present, ACR and single-stranded DNA (P1, ssDNA) formed an adduct, allowing free FAM-labeled complementarity strand DNA (P2, FAM-csDNA) to appear in the solution and avoiding the digestion of P2 by Exo III. After the addition of PFP, the interaction of PFP and FAM induced strong FRET. Under optimized conditions, ACR was detected with a limit of detection (LOD) of 0.16 μM. According to this biosensor, a LOD of 1.3 μM in water extract samples was observed with a good recovery rate (95-110 %).
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Affiliation(s)
- Yufei Liu
- School of Pharmacy, Xinxiang Medical University, Xinxiang, Henan 453003, PR China.
| | - Suyu Meng
- School of Pharmacy, Xinxiang Medical University, Xinxiang, Henan 453003, PR China
| | - Jingjing Qin
- School of Pharmacy, Sanquan College of Xinxiang Medical University, Xinxiang, Henan 453513, PR China
| | - Ruiying Zhang
- School of Pharmacy, Xinxiang Medical University, Xinxiang, Henan 453003, PR China
| | - Ningning He
- The First Affiliated Hospital of Xinxiang Medical University, Xinxiang, Henan 453100, PR China
| | - Yaoyao Jiang
- School of Pharmacy, Xinxiang Medical University, Xinxiang, Henan 453003, PR China
| | - Hong Chen
- School of Pharmacy, Xinxiang Medical University, Xinxiang, Henan 453003, PR China
| | - Na Li
- School of Pharmacy, Xinxiang Medical University, Xinxiang, Henan 453003, PR China
| | - Ying Zhao
- School of Pharmacy, Xinxiang Medical University, Xinxiang, Henan 453003, PR China; Xinxiang Key Laboratory of Clinical Psychopharmacology, Xinxiang Medical University, Xinxiang 453003, PR China
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Wang H, Chen M, Sun Y, Xu L, Li F, Han J. Machine Learning-Assisted Pattern Recognition of Amyloid Beta Aggregates with Fluorescent Conjugated Polymers and Graphite Oxide Electrostatic Complexes. Anal Chem 2022; 94:2757-2763. [PMID: 35084168 DOI: 10.1021/acs.analchem.1c03623] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Five fluorescent positively charged poly(para-aryleneethynylene) (P1-P5) were designed to construct electrostatic complexes C1-C5 with negatively charged graphene oxide (GO). The fluorescence of conjugated polymers was quenched by the quencher GO. Three electrostatic complexes were enough to distinguish between 12 proteins with 100% accuracy. Furthermore, using these sensor arrays, we could identify the levels of Aβ40 and Aβ42 aggregates (monomers, oligomers, and fibrils) via employing machine learning algorithms, making it an attractive strategy for early diagnosis of Alzheimer's disease.
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Affiliation(s)
- Hao Wang
- State Key Laboratory of Natural Medicines and National R&D Center for Chinese Herbal Medicine Processing, College of Engineering, China Pharmaceutical University, Nanjing 211109, China
| | - Mingqi Chen
- State Key Laboratory of Natural Medicines and National R&D Center for Chinese Herbal Medicine Processing, College of Engineering, China Pharmaceutical University, Nanjing 211109, China
| | - Yimin Sun
- School of Pharmacy, China Pharmaceutical University, Nanjing 211109, China
| | - Lian Xu
- State Key Laboratory of Natural Medicines and National R&D Center for Chinese Herbal Medicine Processing, College of Engineering, China Pharmaceutical University, Nanjing 211109, China
| | - Fei Li
- State Key Laboratory of Natural Medicines and National R&D Center for Chinese Herbal Medicine Processing, College of Engineering, China Pharmaceutical University, Nanjing 211109, China
| | - Jinsong Han
- State Key Laboratory of Natural Medicines and National R&D Center for Chinese Herbal Medicine Processing, College of Engineering, China Pharmaceutical University, Nanjing 211109, China
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Zhang Z, Xiang X, Hu Y, Deng Y, Li L, Zhao W, Wu T. A sensitive biomolecules detection device with catalytic hairpin assembly and cationic conjugated polymer-assisted dual signal amplification strategy. Talanta 2021; 223:121716. [PMID: 33303163 DOI: 10.1016/j.talanta.2020.121716] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2020] [Revised: 09/16/2020] [Accepted: 09/28/2020] [Indexed: 01/26/2023]
Abstract
A simple, sensitive, selective, and enzyme-free homogeneous fluorescent biosensing device for DNA and protein detection is fabricated based on catalytic hairpin assembly (CHA), cationic conjugated polymer (CCP), and graphene oxide (GO). In this biosensing device, CCP together with CHA, provides dual signal amplification, and GO suppresses the background when the target is absent. Thus, this CHA/CCP/GO-based biosensor shows improved sensitivity compared with conventional CHA-based biosensors. In the biosensor, two 6-carboxyfluorescein (FAM)-labeled hairpin DNA probes (H1 and H2) are designed, and in the initial state, they could absorb on the surface of GO, leading the system to produce a low background fluorescence signal. When the target DNA appears, it continually catalyzes the formation of H1-H2 double-stranded DNA (dsDNA) complex by CHA reaction, which could be regarded as the first-step amplification. At the same time, the H1-H2 dsDNA complex departures from the surface of GO and interacts with CCP through electrostatic interaction. Then, CCP provides the second-step amplification due to its high fluorescence resonance energy transfer (FRET) efficiency from CCP to FAM. The limit of detection (LOD) and the limit of quantification (LOQ) for the target DNA could reach 32 pM and 1 nM, respectively. The linear range was from 0.1 to 40 nM, and relative standard deviation (RSD) for the points on the calibration curve ranged from 2.8% to 13.9%. This strategy could also be applied to protein detection potentially by integrating the aptamer of the target protein into the hairpin DNA. As proof of concept, thrombin was detected, and the LOD and LOQ was 11 pM and 33 pM, respectively. The linear range was from 3 to 54 nM, and RSD ranged from 3.3% to 10.4%. It showed good selectivity for thrombin compared to equal concentrations of interferences. It was also applied to quantify the thrombin (5, 10, 20 nM) in 1% spiked human serum, which showed satisfying recovery in the range of 94.7 ± 5.3 to 103.7 ± 4.9%.
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Affiliation(s)
- Zhen Zhang
- School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Xia Xiang
- Oil Crops Research Institute of the Chinese Academy of Agricultural Sciences, Wuhan, 430062, China.
| | - Yuqiang Hu
- School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Yuhan Deng
- School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Longjie Li
- School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Wenbo Zhao
- State Key Laboratory of NBC Protection for Civilian, Beijing, 102205, China.
| | - Tongbo Wu
- School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China.
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Polysaccharide-enhanced ARGET ATRP signal amplification for ultrasensitive fluorescent detection of lung cancer CYFRA 21-1 DNA. Anal Bioanal Chem 2020; 412:2413-2421. [PMID: 32047944 DOI: 10.1007/s00216-020-02394-1] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2019] [Revised: 12/15/2019] [Accepted: 01/07/2020] [Indexed: 12/18/2022]
Abstract
An ultrasensitive fluorescence biosensor for detecting cytokeratin fragment antigen 21-1 (CYFRA 21-1) DNA of non-small cell lung carcinoma (NSCLC) is designed using polysaccharide and activator regenerated by electron transfer atom transfer radical polymerization (ARGET ATRP) signal amplification strategy. Thiolated peptide nucleic acid (PNA) is fixed on magnetic nanoparticles (MNPs) by a cross-linking agent and hybridized with CYFRA 21-1 DNA. Hyaluronic acid (HA) is linked to PNA/tDNA heteroduplexes in the form of carboxy-Zr4+-phosphate. Subsequently, multiple 2-bromo-2-methylpropionic acid (BMP) molecules are linked with HA to initiate ARGET ATRP reaction. Finally, a large number of fluorescein o-acrylate (FA) monomers are polymerized on the macro-initiators, and the fluorescence signal is significantly amplified. Under optimal conditions, this biosensor shows a significant linear correlation between the fluorescence intensity and logarithm of CYFRA 21-1 DNA concentration (0.1 fM to 0.1 nM), and the limit of detection is as low as 78 aM. Furthermore, the sensor has a good ability to detect CYFRA 21-1 DNA in serum samples and to recognize mismatched bases. It suggests that the strategy has broad application in early diagnosis by virtue of its high sensitivity and selectivity. Graphical abstract A novel and highly sensitive fluorescence biosensor for quantitatively detecting CYFRA 21-1 DNA via dual signal amplification of hyaluronic acid and ARGET ATRP reaction was developed. This proposed method has a low detection limit, wide detection range, high selectivity, and strong anti-interference.
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Tayade SN, Tawade AK, Talele P, Chavhan SS, Sharma KKK. Swollen liquid crystalline mesophase assisted synthesis of GO-PANI nanocomposite as a fluorescent probe for purines. Methods Appl Fluoresc 2019; 7:045002. [PMID: 31553968 DOI: 10.1088/2050-6120/ab47e7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
This article focuses on the use of graphene oxide-polyaniline (GO-PANI) nanocomposite as fluorescent probe for sensing of adenine (A) and guanine (G). Swollen liquid crystalline mesophase were used for the synthesis of graphene oxide-polyaniline nanocomposite. GO-PANI nanocomposite showed enhanced fluorescent at 441 nm (ƛ excitation = 361 nm) on interaction of purines viz A and G solutions in dimethyl sulfoxide, GO exhibited quenching at 540 nm (ƛ excitation = 261 nm). The fluorescence emission spectra of GO-PANI nanocomposite and GO were recorded in the the pressence of A and G concentrations upto 1.2 × 10-4 M. The limits of detection (LOD) calculated from the concentration dependence study for GO-PANI nanocomposite and GO are 7.5 × 10-6 M and 13.4 × 10-6 M respectively. The LOD in the case of GO is identical for both A (13.0 × 10-6) and G (13.6 × 10-6 M). The binding constant (Kb) determined for GO-PANI with purines are in the range of 0.05-0.08 × 103 M-1 which is higher in the case of GO (2.42-7.52 × 103 M-1). The lifetime measurement demonstrates, an excited state interaction of GO-PANI nanocomposite and GO with purines. This is evident from the increasing lifetime from 4.3 ns to 29.2 ns for GO-PANI nanocomposite, while 17.5 ns to 37.2 ns for GO respectively. The relatively short lifetime of the GO-PANI nanocomposite in comparison with GO suggest an electronic charge dissipation of the excited state between polyaniline and graphene oxide possibly due to the alignment of polyaniline on the graphene oxide sheet. The photopysical properties of GO-PANI nanocomposite and GO observed in this study is new and has potential for application as fluorescent probe for the detection of purines.
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Affiliation(s)
- Shivaji N Tayade
- Department of Chemistry, Shivaji University, Kolhapur, 416004, Maharashtra, India
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Zhang Z, Xiang X, Shi J, Huang F, Xia X, Zheng M, Han L, Tang H. A cationic conjugated polymer and graphene oxide: Application to amplified fluorescence detection of sinapine. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2018; 203:370-374. [PMID: 29886167 DOI: 10.1016/j.saa.2018.05.110] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/06/2018] [Revised: 05/22/2018] [Accepted: 05/27/2018] [Indexed: 06/08/2023]
Abstract
An amplified fluorescence strategy is described for the detection of sinapine (SP) by using a cationic conjugated polymer (PFP) and graphene oxide (GO). It is observed that the fluorescein (FAM)-labeled single-stranded DNA (FAM-DNA) is absorbed on the surface of GO if SP is absent. This causes that fluorescence resonance energy transfer (FRET) from PFP to FAM is inefficient when adding PFP into FAM-DNA/GO complex. If SP is added to FAM-DNA/GO complex, FAM-DNA is desorbed from GO surface due to the competitive binding of SP and FAM-DNA toward GO. In this case, FAM-DNA is close to PFP in the presence of PFP through strong electrostatic interaction, leading to the occurrence of efficient FRET. Based on the above phenomenon, we demonstrate a method to amplify fluorescence signal of traditional GO-based SP assay by introducing PFP. In comparison to the use of single GO, the combination of PFP with GO-based strategy displays high turn-on ratio and enhanced sensitivity with a limit of detection as low as 7.3 ng mL-1 for SP detection. Satisfactory results in practical samples are also obtained by the recovery experiments, demonstrating the potential application of cationic conjugated polymer in plant-derived small molecule.
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Affiliation(s)
- Zhen Zhang
- Oil Crops Research Institute of the Chinese Academy of Agricultural Sciences, Oil Crops and Lipids Process Technology National & Local Joint Engineering Laboratory, Key Laboratory of Oilseeds Processing, Ministry of Agriculture, Hubei Key Laboratory of Lipid Chemistry and Nutrition, Wuhan 430062, China
| | - Xia Xiang
- Oil Crops Research Institute of the Chinese Academy of Agricultural Sciences, Oil Crops and Lipids Process Technology National & Local Joint Engineering Laboratory, Key Laboratory of Oilseeds Processing, Ministry of Agriculture, Hubei Key Laboratory of Lipid Chemistry and Nutrition, Wuhan 430062, China.
| | - Jianbin Shi
- Institute of Agro-Products Processing and Nuclear-Agricultural Technology, Hubei Academy of Agricultural Sciences, Wuhan 430064, Hubei Province, China
| | - Fenghong Huang
- Oil Crops Research Institute of the Chinese Academy of Agricultural Sciences, Oil Crops and Lipids Process Technology National & Local Joint Engineering Laboratory, Key Laboratory of Oilseeds Processing, Ministry of Agriculture, Hubei Key Laboratory of Lipid Chemistry and Nutrition, Wuhan 430062, China.
| | - Xiaoyang Xia
- Oil Crops Research Institute of the Chinese Academy of Agricultural Sciences, Oil Crops and Lipids Process Technology National & Local Joint Engineering Laboratory, Key Laboratory of Oilseeds Processing, Ministry of Agriculture, Hubei Key Laboratory of Lipid Chemistry and Nutrition, Wuhan 430062, China
| | - Mingming Zheng
- Oil Crops Research Institute of the Chinese Academy of Agricultural Sciences, Oil Crops and Lipids Process Technology National & Local Joint Engineering Laboratory, Key Laboratory of Oilseeds Processing, Ministry of Agriculture, Hubei Key Laboratory of Lipid Chemistry and Nutrition, Wuhan 430062, China
| | - Ling Han
- Oil Crops Research Institute of the Chinese Academy of Agricultural Sciences, Oil Crops and Lipids Process Technology National & Local Joint Engineering Laboratory, Key Laboratory of Oilseeds Processing, Ministry of Agriculture, Hubei Key Laboratory of Lipid Chemistry and Nutrition, Wuhan 430062, China
| | - Hu Tang
- Oil Crops Research Institute of the Chinese Academy of Agricultural Sciences, Oil Crops and Lipids Process Technology National & Local Joint Engineering Laboratory, Key Laboratory of Oilseeds Processing, Ministry of Agriculture, Hubei Key Laboratory of Lipid Chemistry and Nutrition, Wuhan 430062, China
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A fluorometric aptamer-based assay for ochratoxin A using magnetic separation and a cationic conjugated fluorescent polymer. Mikrochim Acta 2018; 185:427. [PMID: 30135994 DOI: 10.1007/s00604-018-2962-8] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2018] [Accepted: 08/12/2018] [Indexed: 12/13/2022]
Abstract
A fluorometric aptamer-based assay for ochratoxin A (OTA) is described. It is making use of magnetic separation and a cationic conjugated fluorescent polymer. Amino-tagged aptamer (Apt) against OTA is immobilized on magnetic beads (MBs) to form a conjugate of type Apt-MBs. The immobilized aptamer is partially complementary to carboxyfluorescein-labeled DNA which binds to the Apt-MBs via hybridization if OTA is absent. Only few FAM-DNA will remain in the supernatant after magnetic separation, and only weak fluorescence resonance energy transfer (FRET) occurs on addition of the fluorescent polymer. If, however, OTA is present, it will bind to the aptamer and prevent the hybridization between Apt-DNA and FAM-DNA. This results in the presence of large amounts of FAM-DNA in the supernatant after magnetic separation. On addition of fluorescent polymer, efficient FRET occurs from the polymer to FAM-DNA. Fluorescence, best measured at excitation/emission peaks of 370/530 nm, increases with increasing concentrations of OTA. This assay is highly sensitive and selective. The detection limit is as low as 0.11 ng mL-1. This is 6 times lower than the aptamer assay without using the fluorescent polymer. Conceivably, this method has a wider scope in that it may be extended to other mycotoxins by simply changing the aptamer. Graphical Abstract Schematic of a fluorometric aptamer assay for ochratoxin A (OTA). It is based on magnetic separation coupled with a cationic conjugated polymer (PFP).
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Cui X, Fang X, Zhao H, Li Z, Ren H. Fabrication of thiazole derivatives functionalized graphene decorated with fluorine, chlorine and iodine@SnO2 nanoparticles for highly sensitive detection of heavy metal ions. Colloids Surf A Physicochem Eng Asp 2018. [DOI: 10.1016/j.colsurfa.2018.03.004] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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Li D, Gao D, Qi J, Chai R, Zhan Y, Xing C. Conjugated Polymer/Graphene Oxide Complexes for Photothermal Activation of DNA Unzipping and Binding to Protein. ACS APPLIED BIO MATERIALS 2018. [DOI: 10.1021/acsabm.8b00047] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Graphene oxide: An efficient material and recent approach for biotechnological and biomedical applications. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2018. [DOI: 10.1016/j.msec.2018.01.004] [Citation(s) in RCA: 164] [Impact Index Per Article: 27.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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15
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Liu Y, Gao L, Yan H, Shangguan J, Zhang Z, Xiang X. A cationic conjugated polymer coupled with exonuclease I: application to the fluorometric determination of protein and cell imaging. Mikrochim Acta 2018; 185:118. [PMID: 29594586 DOI: 10.1007/s00604-017-2661-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2017] [Accepted: 12/31/2017] [Indexed: 11/25/2022]
Abstract
A strategy is described for the detection of protein by using a cationic fluorescent conjugated polymer coupled with exonuclease I (Exo I). Taking streptavidin (SA) as model protein, it is observed that Exo I can digest single-stranded DNA conjugated with biotin and carboxyfluorescein (P1) if SA is absent. This leads to the formation of small nucleotide fragments and to weak fluorescence resonance energy transfer (FRET) from the polymer to P1. If, however, SA is present, the high affinity of SA and biotin prevents the digestion of P1 by Exo I. This results in the sorption of P1 on the surface of the polymer through strong electrostatic interaction. Hence, efficient FRET occurs from the fluorescent polymer to the fluorescent label of P1. Fluorescence is measured at an excitation wavelength of 370 nm, and emission is measured at two wavelengths (530 and 425 nm). The ratio of the two intensities (I530/I425) is directly related to the concentration of SA. Under the optimal conditions, the assay has a detection limit of 1.3 ng·mL-1. The method was also applied to image the folate receptor in HeLa cells, thus demonstrating the versatility of this strategy. Graphical abstract A fluorometric strategy is described for protein detection and cell imaging based on a cationic conjugated polymer (PFP) coupled with exonuclease I (Exo I) trigged fluorescence resonance energy transfer (FRET).
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Affiliation(s)
- Yufei Liu
- School of Pharmacy, Xinxiang Medical University, Xinxiang, Henan, 453003, People's Republic of China.
| | - Liyun Gao
- Department of toxicology, School of Public Health, Xinxiang Medical University, Xinxiang, Henan, 453003, People's Republic of China
| | - Huijuan Yan
- School of Pharmacy, Xinxiang Medical University, Xinxiang, Henan, 453003, People's Republic of China
| | - Jingfang Shangguan
- School of Pharmacy, Xinxiang Medical University, Xinxiang, Henan, 453003, People's Republic of China
| | - Zhen Zhang
- Oil Crops Research Institute of the Chinese Academy of Agricultural Sciences, Wuhan, Hubei, 430000, People's Republic of China
| | - Xia Xiang
- Oil Crops Research Institute of the Chinese Academy of Agricultural Sciences, Wuhan, Hubei, 430000, People's Republic of China.
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16
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Wang J, Lv F, Liu L, Ma Y, Wang S. Strategies to design conjugated polymer based materials for biological sensing and imaging. Coord Chem Rev 2018. [DOI: 10.1016/j.ccr.2017.06.023] [Citation(s) in RCA: 72] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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17
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Guo L, Hu Y, Zhang Z, Tang Y. Universal fluorometric aptasensor platform based on water-soluble conjugated polymers/graphene oxide. Anal Bioanal Chem 2017; 410:287-295. [DOI: 10.1007/s00216-017-0720-0] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2017] [Revised: 10/17/2017] [Accepted: 10/20/2017] [Indexed: 12/18/2022]
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18
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Chen AW, Briseno AL, Santore MM. Tunable fluorescence quenching near the graphene-aqueous interface. J Colloid Interface Sci 2017; 506:76-82. [DOI: 10.1016/j.jcis.2017.07.019] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2017] [Revised: 07/04/2017] [Accepted: 07/05/2017] [Indexed: 12/28/2022]
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19
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Adachi N, Yoshinari M, Suzuki E, Okada M. Oligo(p-phenylene ethynylene) with Cyanoacrylate Terminal Groups and Graphene Composite as Fluorescent Chemical Sensor for Cysteine. J Fluoresc 2017; 27:1449-1456. [PMID: 28391541 DOI: 10.1007/s10895-017-2084-4] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2016] [Accepted: 04/04/2017] [Indexed: 12/25/2022]
Abstract
A chemical sensor for cysteine (Cys) was fabricated based on a fluorescent oligo(p-phenylene ethynylene)s (OPEs) and OPE-graphene oxide (GO) composite. OPE with cyanoacrylate terminal groups were synthesized by a Pd-catalyzed Sonogashira coupling reaction and Knoevenagel condensation for use as a chemical sensor for Cys. The optical properties and Cys sensing capability of the cyanoacrylate modified OPE and OPE-GO composite were investigated. In addition of Cys, the fluorescence of OPE was blue-shifted and decreased (fluorescence turn-off), while the fluorescence of the OPE-GO composite was enhanced (fluorescence turn-on). Thus, OPE with cyanoacrylate terminal groups and OPE-GO composite acts a highly sensitive fluorescent chemical sensor for Cys.
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Affiliation(s)
- Naoya Adachi
- Division of Science, School of Science and Engineering, Tokyo Denki University, Hatoyama, Hiki-gun, Saitama, 350-0394, Japan. .,Department of Science and Engineering, Graduate School of Science and Engineering, Tokyo Denki University, Hatoyama, Hiki-gun, Saitama, 350-0394, Japan.
| | - Mariko Yoshinari
- Division of Science, School of Science and Engineering, Tokyo Denki University, Hatoyama, Hiki-gun, Saitama, 350-0394, Japan
| | - Eri Suzuki
- Department of Science and Engineering, Graduate School of Science and Engineering, Tokyo Denki University, Hatoyama, Hiki-gun, Saitama, 350-0394, Japan
| | - Mari Okada
- Department of Science and Engineering, Graduate School of Science and Engineering, Tokyo Denki University, Hatoyama, Hiki-gun, Saitama, 350-0394, Japan
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20
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Graphene and graphene-like two-denominational materials based fluorescence resonance energy transfer (FRET) assays for biological applications. Biosens Bioelectron 2017; 89:123-135. [DOI: 10.1016/j.bios.2016.06.046] [Citation(s) in RCA: 126] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2015] [Revised: 06/11/2016] [Accepted: 06/14/2016] [Indexed: 11/17/2022]
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21
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DNA covalently linked to graphene oxide for biotin–streptavidin interaction assay. Talanta 2017; 163:140-145. [DOI: 10.1016/j.talanta.2016.10.096] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2016] [Revised: 10/25/2016] [Accepted: 10/27/2016] [Indexed: 11/17/2022]
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22
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Cao D, Li CY, Kang YF, Lin Y, Cui R, Pang DW, Tang HW. Dual-component gene detection for H7N9 virus – The combination of optical trapping and bead-based fluorescence assay. Biosens Bioelectron 2016; 86:1031-1037. [DOI: 10.1016/j.bios.2016.07.040] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2016] [Revised: 06/24/2016] [Accepted: 07/12/2016] [Indexed: 12/18/2022]
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23
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Kenry, Geldert A, Zhang X, Zhang H, Lim CT. Highly Sensitive and Selective Aptamer-Based Fluorescence Detection of a Malarial Biomarker Using Single-Layer MoS2 Nanosheets. ACS Sens 2016. [DOI: 10.1021/acssensors.6b00449] [Citation(s) in RCA: 53] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Kenry
- NUS
Graduate School for Integrative Sciences and Engineering, National University of Singapore, Singapore 117456
- Centre
for Advanced 2D Materials and Graphene Research Centre, National University of Singapore, Singapore 117543
- Department
of Biomedical Engineering, National University of Singapore, Singapore 117576
| | - Alisha Geldert
- Department
of Biomedical Engineering, National University of Singapore, Singapore 117576
| | - Xiao Zhang
- Center
for Programmable Materials, School of Materials Science and Engineering, Nanyang Technological University, Singapore 639798
| | - Hua Zhang
- Center
for Programmable Materials, School of Materials Science and Engineering, Nanyang Technological University, Singapore 639798
| | - Chwee Teck Lim
- NUS
Graduate School for Integrative Sciences and Engineering, National University of Singapore, Singapore 117456
- Centre
for Advanced 2D Materials and Graphene Research Centre, National University of Singapore, Singapore 117543
- Department
of Biomedical Engineering, National University of Singapore, Singapore 117576
- Mechanobiology
Institute, National University of Singapore, Singapore 117411
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24
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Yuan H, Fan Y, Xing C, Niu R, Chai R, Zhan Y, Qi J, An H, Xu J. Conjugated Polymer-Based Hybrid Materials for Turn-On Detection of CO2 in Plant Photosynthesis. Anal Chem 2016; 88:6593-7. [DOI: 10.1021/acs.analchem.6b01489] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Hongbo Yuan
- School of Materials Science and Engineering, Hebei University of Technology, Tianjin 300401, P.R. China
- Institute for Molecules and Materials, Radboud University, Heyendaalseweg 135, 6525 AJ Nijmegen, The Netherlands
| | - Yibing Fan
- Institute of Biophysics, Hebei University of Technology, Tianjin 300401, P.R. China
| | - Chengfen Xing
- Institute of Biophysics, Hebei University of Technology, Tianjin 300401, P.R. China
| | - Ruimin Niu
- Institute of Biophysics, Hebei University of Technology, Tianjin 300401, P.R. China
| | - Ran Chai
- School of Materials Science and Engineering, Hebei University of Technology, Tianjin 300401, P.R. China
| | - Yong Zhan
- School of Materials Science and Engineering, Hebei University of Technology, Tianjin 300401, P.R. China
| | - Junjie Qi
- Institute of Biophysics, Hebei University of Technology, Tianjin 300401, P.R. China
| | - Hailong An
- Institute of Biophysics, Hebei University of Technology, Tianjin 300401, P.R. China
| | - Jialiang Xu
- Institute for Molecules and Materials, Radboud University, Heyendaalseweg 135, 6525 AJ Nijmegen, The Netherlands
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25
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Ye YD, Xia L, Xu DD, Xing XJ, Pang DW, Tang HW. DNA-stabilized silver nanoclusters and carbon nanoparticles oxide: A sensitive platform for label-free fluorescence turn-on detection of HIV-DNA sequences. Biosens Bioelectron 2016; 85:837-843. [PMID: 27295571 DOI: 10.1016/j.bios.2016.06.001] [Citation(s) in RCA: 74] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2016] [Revised: 05/31/2016] [Accepted: 06/01/2016] [Indexed: 11/17/2022]
Abstract
Based on the remarkable difference between the interactions of carbon nanoparticles (CNPs) oxide with single-stranded DNA (ssDNA) and double-stranded DNA (dsDNA), and the fact that fluorescence of DNA-stabilized silver nanoclusters (AgNCs) can be quenched by CNPs oxide, DNA-functionalized AgNCs were applied as label-free fluorescence probes and a novel fluorescence resonance energy transfer (FRET) sensor was successfully constructed for the detection of human immunodeficiency virus (HIV) DNA sequences. CNPs oxide were prepared with the oxidation of candle soot, hence it is simple, time-saving and low-cost. The strategy of dual AgNCs probes was applied to improve the detection sensitivity by using dual- probe capturing the same target DNA in a sandwich mode and as the fluorescence donor, and using CNPs oxide as the acceptor. In the presence of target DNA, a dsDNA hybrid forms, leading to the desorption of the ssDNA-AgNCs probes from CNPs oxide, and the recovering of fluorescence of the AgNCs in a HIV-DNA concentration-dependent manner. The results show that HIV-DNA can be detected in the range of 1-50nM with a detection limit of 0.40nM in aqueous buffer. The method is simple, rapid and sensitive with no need of labeled fluorescent probes, and moreover, the design of fluorescent dual-probe makes full use of the excellent fluorescence property of AgNCs and further improves the detection sensitivity.
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Affiliation(s)
- Yu-Dan Ye
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Sciences, Wuhan Institute of Biotechnology, Wuhan University, Wuhan 430072, China
| | - Li Xia
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Sciences, Wuhan Institute of Biotechnology, Wuhan University, Wuhan 430072, China
| | - Dang-Dang Xu
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Sciences, Wuhan Institute of Biotechnology, Wuhan University, Wuhan 430072, China
| | - Xiao-Jing Xing
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Sciences, Wuhan Institute of Biotechnology, Wuhan University, Wuhan 430072, China
| | - Dai-Wen Pang
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Sciences, Wuhan Institute of Biotechnology, Wuhan University, Wuhan 430072, China
| | - Hong-Wu Tang
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Sciences, Wuhan Institute of Biotechnology, Wuhan University, Wuhan 430072, China.
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26
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Baruah U, Chowdhury D. Functionalized graphene oxide quantum dot-PVA hydrogel: a colorimetric sensor for Fe²⁺, Co²⁺ and Cu²⁺ ions. NANOTECHNOLOGY 2016; 27:145501. [PMID: 26902906 DOI: 10.1088/0957-4484/27/14/145501] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Functionalized graphene oxide quantum dots (GOQDs)-poly(vinyl alcohol) (PVA) hybrid hydrogels were prepared using a simple, facile and cost-effective strategy. GOQDs bearing different surface functional groups were introduced as the cross-linking agent into the PVA matrix thereby resulting in gelation. The four different types of hybrid hydrogels were prepared using graphene oxide, reduced graphene oxide, ester functionalized graphene oxide and amine functionalized GOQDs as cross-linking agents. It was observed that the hybrid hydrogel prepared with amine functionalized GOQDs was the most stable. The potential applicability of using this solid sensing platform has been subsequently explored in an easy, simple, effective and sensitive method for optical detection of M(2+) (Fe(2+), Co(2+) and Cu(2+)) in aqueous media involving colorimetric detection. Amine functionalized GOQDs-PVA hybrid hydrogel when put into the corresponding solution of Fe(2+), Co(2+) and Cu(2+) renders brown, orange and blue coloration respectively of the solution detecting the presence of Fe(2+), Co(2+) and Cu(2+) ions in the solution. The minimum detection limit observed was 1 × 10(-7) M using UV-visible spectroscopy. Further, the applicability of the sensing material was also tested for a mixture of co-existing ions in solution to demonstrate the practical applicability of the system. Insight into the probable mechanistic pathway involved in the detection process is also being discussed.
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Affiliation(s)
- Upama Baruah
- Material Nanochemistry Laboratory, Physical Sciences Division, Institute of Advanced Study in Science and Technology, Paschim Boragaon, Garchuk, Guwahati-781035, India
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27
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Li CY, Cao D, Kang YF, Lin Y, Cui R, Pang DW, Tang HW. Fluorescence Detection of H5N1 Virus Gene Sequences Based on Optical Tweezers with Two-Photon Excitation Using a Single Near Infrared Nanosecond Pulse Laser. Anal Chem 2016; 88:4432-9. [DOI: 10.1021/acs.analchem.6b00065] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Cheng-Yu Li
- Key Laboratory of Analytical
Chemistry for Biology and Medicine (Ministry of Education), College
of Chemistry and Molecular Sciences, State Key Laboratory of Virology,
The Institute for Advanced Studies, and Wuhan Institute of Biotechnology, Wuhan University, Wuhan, 430072, People’s Republic of China
| | - Di Cao
- Key Laboratory of Analytical
Chemistry for Biology and Medicine (Ministry of Education), College
of Chemistry and Molecular Sciences, State Key Laboratory of Virology,
The Institute for Advanced Studies, and Wuhan Institute of Biotechnology, Wuhan University, Wuhan, 430072, People’s Republic of China
| | - Ya-Feng Kang
- Key Laboratory of Analytical
Chemistry for Biology and Medicine (Ministry of Education), College
of Chemistry and Molecular Sciences, State Key Laboratory of Virology,
The Institute for Advanced Studies, and Wuhan Institute of Biotechnology, Wuhan University, Wuhan, 430072, People’s Republic of China
| | - Yi Lin
- Key Laboratory of Analytical
Chemistry for Biology and Medicine (Ministry of Education), College
of Chemistry and Molecular Sciences, State Key Laboratory of Virology,
The Institute for Advanced Studies, and Wuhan Institute of Biotechnology, Wuhan University, Wuhan, 430072, People’s Republic of China
| | - Ran Cui
- Key Laboratory of Analytical
Chemistry for Biology and Medicine (Ministry of Education), College
of Chemistry and Molecular Sciences, State Key Laboratory of Virology,
The Institute for Advanced Studies, and Wuhan Institute of Biotechnology, Wuhan University, Wuhan, 430072, People’s Republic of China
| | - Dai-Wen Pang
- Key Laboratory of Analytical
Chemistry for Biology and Medicine (Ministry of Education), College
of Chemistry and Molecular Sciences, State Key Laboratory of Virology,
The Institute for Advanced Studies, and Wuhan Institute of Biotechnology, Wuhan University, Wuhan, 430072, People’s Republic of China
| | - Hong-Wu Tang
- Key Laboratory of Analytical
Chemistry for Biology and Medicine (Ministry of Education), College
of Chemistry and Molecular Sciences, State Key Laboratory of Virology,
The Institute for Advanced Studies, and Wuhan Institute of Biotechnology, Wuhan University, Wuhan, 430072, People’s Republic of China
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28
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Wang S, Zhang Y, Ning Y, Zhang GJ. A WS2 nanosheet-based platform for fluorescent DNA detection via PNA-DNA hybridization. Analyst 2015; 140:434-9. [PMID: 25426801 DOI: 10.1039/c4an01738b] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
The WS2 nanosheet, a two-dimensional layered nanomaterial, shows high fluorescence quenching ability for the dye-labeled ssDNA. Currently, most of the fluorescent DNA detection methods employ DNA as a probe for recognition of target DNA. Peptide nucleic acid (PNA) is a DNA mimic but a neutral molecule, showing superior hybridization properties to target DNA. Based on the unique properties of WS2 nanosheet and PNA-DNA hybridization, we have developed a rapid, simple, stable and sensitive approach for DNA detection based on good fluorescence quenching ability of the WS2 nanosheet as well as high binding affinity and specificity of PNA to DNA. This novel assay is capable of exhibiting high sensitivity and specificity with a detection limit of 500 pM, and discriminating between single bases.
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Affiliation(s)
- Shuting Wang
- School of Laboratory Medicine, Hubei University of Chinese Medicine, 1 Huangjia Lake West Road, Wuhan 430065, China.
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29
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Graphene oxide based fluorescence resonance energy transfer and loop-mediated isothermal amplification for white spot syndrome virus detection. J Biotechnol 2015; 212:44-9. [DOI: 10.1016/j.jbiotec.2015.08.003] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2015] [Revised: 08/06/2015] [Accepted: 08/10/2015] [Indexed: 11/24/2022]
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30
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Priftis D. Polyelectrolyte-graphene Nanocomposites for Biosensing Applications. CURR ORG CHEM 2015; 19:1819-1827. [PMID: 27713667 PMCID: PMC5024728 DOI: 10.2174/1385272819666150526005557] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2014] [Revised: 03/05/2015] [Accepted: 05/25/2015] [Indexed: 11/22/2022]
Abstract
Due to their unique structure, the optical and mechanical properties graphene and its derivatives (e.g. graphene oxide, reduced graphene oxide) have captured the attention of a constantly increasing number of scientists with regards to biomolecule sensing. This mini review focuses on one specific type of sensor, that consisting of graphene and polyelectrolytes. Polyelectrolyte-graphene nanocomposites exhibit outstanding detection capabilities by synergistically combining the characteristics of both components, outperforming traditional sensors in many cases. Characteristics and mechanistic details of the most important polyelectrolyte-graphene based sensors will be discussed in detail in addition to some current challenges and future perspectives.
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Affiliation(s)
- Dimitrios Priftis
- The Institute for Molecular Engineering, University of Chicago, Chicago, IL 60637,USA
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31
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Adachi N, Nakajima M, Okada M, Sugeno M, Norioka T. Fluorescence chemical sensor based on water-soluble poly(p-phenylene ethynylene)-graphene oxide composite for Cu2+. POLYM ADVAN TECHNOL 2015. [DOI: 10.1002/pat.3633] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Naoya Adachi
- Division of Science, School of Science and Engineering; Tokyo Denki University; Hatoyama, Hiki-gun Saitama 350-0394 Japan
| | - Mai Nakajima
- Division of Science, School of Science and Engineering; Tokyo Denki University; Hatoyama, Hiki-gun Saitama 350-0394 Japan
| | - Mari Okada
- Division of Science, School of Science and Engineering; Tokyo Denki University; Hatoyama, Hiki-gun Saitama 350-0394 Japan
| | - Masafumi Sugeno
- Division of Science, School of Science and Engineering; Tokyo Denki University; Hatoyama, Hiki-gun Saitama 350-0394 Japan
| | - Takayuki Norioka
- Division of Science, School of Science and Engineering; Tokyo Denki University; Hatoyama, Hiki-gun Saitama 350-0394 Japan
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32
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Liu X, Hua X, Fan Q, Chao J, Su S, Huang YQ, Wang L, Huang W. Thioflavin T as an Efficient G-Quadruplex Inducer for the Highly Sensitive Detection of Thrombin Using a New Föster Resonance Energy Transfer System. ACS APPLIED MATERIALS & INTERFACES 2015; 7:16458-16465. [PMID: 26173915 DOI: 10.1021/acsami.5b03662] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
We report a new Föster resonance energy transfer (FRET) system that uses a special dye, thioflavin T (ThT), as an energy acceptor and a water-soluble conjugated polymer (CP) with high fluorescence as an energy donor. A simple, label-free, and sensitive strategy for the detection of thrombin in buffer and in diluted serum was designed based on this new system using ThT as an efficient inducer of the G-quadruplex. The difference between the blank and the positive samples was amplified due to distinctive FRET signals because thrombin has little effect on the intercalation of ThT into the G-quadruplex. In the absence of the target, ThT induces the aptamer to form a G-quadruplex and intercalates into it with strong fluorescence. The electrostatic attractions between the negatively charged G-quadruplex and positively charged CP allow a short donor-acceptor distance, resulting in a high FRET signal. However, in the presence of the target, the aptamer forms a G-quadruplex-thrombin complex first, followed by the intercalation of ThT into the G-quadruplex. A long distance exists between the donor and acceptor due to the strong steric hindrance from the large-sized thrombin, which leads to a low FRET signal. Compared with previously reported strategies based on the FRET between the CP and dye, our strategy is label-free, and the sensitivity was improved by an order of magnitude. Our strategy also shows the advantages of being simple, rapid (about 50 min), sensitive, label-free, and low-cost in comparison to strategies based on the FRET between quantum dots and dyes.
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33
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Qian Y, Wu H, Yuan D, Li X, Yu W, Wang C. In situpolymerization of polyimide-based nanocomposites via covalent incorporation of functionalized graphene nanosheets for enhancing mechanical, thermal, and electrical properties. J Appl Polym Sci 2015. [DOI: 10.1002/app.42724] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Yong Qian
- Fundamental Science on Radioactive Geology and Exploration Technology Laboratory, Department of Materials Science and Engineering; East China Institute of Technology; Nanchang Jiangxi 330013 China
| | - Hongfu Wu
- Fundamental Science on Radioactive Geology and Exploration Technology Laboratory, Department of Materials Science and Engineering; East China Institute of Technology; Nanchang Jiangxi 330013 China
| | - Dingzhong Yuan
- Fundamental Science on Radioactive Geology and Exploration Technology Laboratory, Department of Materials Science and Engineering; East China Institute of Technology; Nanchang Jiangxi 330013 China
| | - Xing Li
- Fundamental Science on Radioactive Geology and Exploration Technology Laboratory, Department of Materials Science and Engineering; East China Institute of Technology; Nanchang Jiangxi 330013 China
| | - Wenting Yu
- Fundamental Science on Radioactive Geology and Exploration Technology Laboratory, Department of Materials Science and Engineering; East China Institute of Technology; Nanchang Jiangxi 330013 China
| | - Chunyan Wang
- Fundamental Science on Radioactive Geology and Exploration Technology Laboratory, Department of Materials Science and Engineering; East China Institute of Technology; Nanchang Jiangxi 330013 China
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34
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Guo J, Zhao J, Wang B, Yan F. Water-soluble cationic polypyrrole based probe for fluorometric and voltammetric detection of base pair mismatched oligonucleotides. ACTA ACUST UNITED AC 2015. [DOI: 10.1002/pola.27595] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Jiangna Guo
- Department of Polymer Science and Engineering; Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, College of Chemistry, Chemical Engineering and Materials Science, Soochow University; Suzhou 215123 China
| | - Jie Zhao
- Department of Polymer Science and Engineering; Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, College of Chemistry, Chemical Engineering and Materials Science, Soochow University; Suzhou 215123 China
| | - Bin Wang
- Department of Plastic and Reconstructive Surgery; Shanghai Ninth People's Hospital, Shanghai Jiaotong University School of Medicine; Shanghai 200011 China
| | - Feng Yan
- Department of Polymer Science and Engineering; Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, College of Chemistry, Chemical Engineering and Materials Science, Soochow University; Suzhou 215123 China
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35
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Li F, Chao J, Li Z, Xing S, Su S, Li X, Song S, Zuo X, Fan C, Liu B, Huang W, Wang L, Wang L. Graphene oxide-assisted nucleic acids assays using conjugated polyelectrolytes-based fluorescent signal transduction. Anal Chem 2015; 87:3877-83. [PMID: 25738486 DOI: 10.1021/ac504658a] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
In this work, we investigated the interactions between graphene oxide (GO) and conjugated polyelectrolytes (CPEs) with different backbone and side chain structures. By studying the mechanism of fluorescence quenching of CPEs by GO, we find that the charge and the molecular structure of CPEs play important roles for GO-CPEs interactions. Among them, electrostatic interaction, π-π interaction, and cation-π bonding are dominant driving forces. By using a cationic P2, we have developed a sensitive homogeneous sensor for DNA and RNA detection with a detection limit of 50 pM DNA and RNA, which increased the sensitivity by 40-fold as compared to GO-free CPE-based sensors. This GO-assisted CPE sensing strategy is also generic and shows a high potential for biosensor designs based on aptamers, proteins, peptides, and other biological probes.
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Affiliation(s)
- Fan Li
- ∥Division of Physical Biology and Bioimaging Center, Shanghai Synchrotron Radiation Facility, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China
| | - Jie Chao
- ‡Key Laboratory for Organic Electronics and Information Displays (KLOEID), Institute of Advanced Materials (IAM), School of Materials Science and Engineering, Nanjing University of Posts and Telecommunications, Nanjing, Jiangsu 210023, China
| | - Zhenhua Li
- ∥Division of Physical Biology and Bioimaging Center, Shanghai Synchrotron Radiation Facility, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China
| | - Shu Xing
- ∥Division of Physical Biology and Bioimaging Center, Shanghai Synchrotron Radiation Facility, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China
| | - Shao Su
- ‡Key Laboratory for Organic Electronics and Information Displays (KLOEID), Institute of Advanced Materials (IAM), School of Materials Science and Engineering, Nanjing University of Posts and Telecommunications, Nanjing, Jiangsu 210023, China
| | - Xiaoxia Li
- ∥Division of Physical Biology and Bioimaging Center, Shanghai Synchrotron Radiation Facility, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China
| | - Shiping Song
- ∥Division of Physical Biology and Bioimaging Center, Shanghai Synchrotron Radiation Facility, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China
| | - Xiaolei Zuo
- ∥Division of Physical Biology and Bioimaging Center, Shanghai Synchrotron Radiation Facility, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China
| | - Chunhai Fan
- ∥Division of Physical Biology and Bioimaging Center, Shanghai Synchrotron Radiation Facility, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China
| | - Bin Liu
- §Department of Chemical and Bimolecular Engineering, National University of Singapore, 117576, Singapore
| | - Wei Huang
- ‡Key Laboratory for Organic Electronics and Information Displays (KLOEID), Institute of Advanced Materials (IAM), School of Materials Science and Engineering, Nanjing University of Posts and Telecommunications, Nanjing, Jiangsu 210023, China
| | - Lianhui Wang
- ‡Key Laboratory for Organic Electronics and Information Displays (KLOEID), Institute of Advanced Materials (IAM), School of Materials Science and Engineering, Nanjing University of Posts and Telecommunications, Nanjing, Jiangsu 210023, China
| | - Lihua Wang
- ∥Division of Physical Biology and Bioimaging Center, Shanghai Synchrotron Radiation Facility, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China
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36
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Hun X, Xie G, Luo X. Scaling up an electrochemical signal with a catalytic hairpin assembly coupling nanocatalyst label for DNA detection. Chem Commun (Camb) 2015; 51:7100-3. [DOI: 10.1039/c5cc00680e] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
A new strategy for the electrochemical detection of DNA based on catalytic hairpin assembly combined with nanocatalyst label-based redox cycling reaction signal amplification. A superior detection limit of 0.3 aM toward DNA was achieved.
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Affiliation(s)
- Xu Hun
- Key Laboratory of Sensor Analysis of Tumor Marker
- Ministry of Education
- Shandong Provincial Key Laboratory Of Biochemical Analysis
- College of Chemistry and Molecular Engineering
- Qingdao University of Science and Technology
| | - Guoliang Xie
- Key Laboratory of Sensor Analysis of Tumor Marker
- Ministry of Education
- Shandong Provincial Key Laboratory Of Biochemical Analysis
- College of Chemistry and Molecular Engineering
- Qingdao University of Science and Technology
| | - Xiliang Luo
- Key Laboratory of Sensor Analysis of Tumor Marker
- Ministry of Education
- Shandong Provincial Key Laboratory Of Biochemical Analysis
- College of Chemistry and Molecular Engineering
- Qingdao University of Science and Technology
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37
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Vovusha H, Sanyal B. Adsorption of nucleobases on 2D transition-metal dichalcogenides and graphene sheet: a first principles density functional theory study. RSC Adv 2015. [DOI: 10.1039/c5ra14664j] [Citation(s) in RCA: 99] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
Abstract
Adsorption of nucleobases A, T, G, C and U on transition-metal dichalcogenides such as MoS2 and WS2 is studied using PBE, DFT-D2 and vdW-DF methods.
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Affiliation(s)
- Hakkim Vovusha
- Department of Physics and Astronomy
- Uppsala University
- Uppsala
- Sweden
- Department of Cell and Molecular Biology
| | - Biplab Sanyal
- Department of Physics and Astronomy
- Uppsala University
- Uppsala
- Sweden
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38
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Baptista FR, Belhout SA, Giordani S, Quinn SJ. Recent developments in carbon nanomaterial sensors. Chem Soc Rev 2015; 44:4433-53. [DOI: 10.1039/c4cs00379a] [Citation(s) in RCA: 366] [Impact Index Per Article: 40.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The structural diversity of carbon nanomaterials provides an array of unique electronic, magnetic and optical properties, which when combined with their robust chemistry and ease of manipulation, makes them attractive candidates for sensor applications. In this review recent developments in the use of carbon nanoparticles and nanostructures as sensors and biosensors are explored.
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Affiliation(s)
| | - S. A. Belhout
- School of Chemistry
- University College Dublin
- Dublin 4
- Ireland
| | - S. Giordani
- Istituto Italiano di Tecnologia (IIT)
- Nano Carbon Materials
- Nanophysics Department
- 16163 Genova
- Italy
| | - S. J. Quinn
- School of Chemistry
- University College Dublin
- Dublin 4
- Ireland
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39
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Abstract
In this critical review, we present the recent advances in the design and fabrication of graphene/nucleic acid nanobiointerfaces, as well as the fundamental understanding of their interfacial properties and various nanobiotechnological applications.
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Affiliation(s)
- Longhua Tang
- State Key Laboratory of Modern Optical Instrumentation
- Department of Optical Engineering
- Zhejiang University
- Hangzhou 310027
- China
| | - Ying Wang
- Department of Chemistry
- Shanghai Key Laboratory of Chemical Assessment and Sustainability
- UNEP-Tongji Institute of Environment for Sustainable Development
- Tongji University
- Shanghai
| | - Jinghong Li
- Department of Chemistry
- Beijing Key Laboratory for Microanalytical Methods and Instrumentation
- Tsinghua University
- Beijing 100084
- China
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40
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Xiao X, Li YF, Huang CZ, Zhen SJ. A novel graphene oxide amplified fluorescence anisotropy assay with improved accuracy and sensitivity. Chem Commun (Camb) 2015; 51:16080-3. [DOI: 10.1039/c5cc05902j] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A novel and versatile graphene oxide (GO) amplified fluorescence anisotropy (FA) strategy with improved accuracy and sensitivity has been successfully developed.
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Affiliation(s)
- Xue Xiao
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry (Southwest University)
- Ministry of Education
- College of Chemistry and Chemical Engineering
- Southwest University
- Chongqing
| | - Yuan Fang Li
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry (Southwest University)
- Ministry of Education
- College of Chemistry and Chemical Engineering
- Southwest University
- Chongqing
| | - Cheng Zhi Huang
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry (Southwest University)
- Ministry of Education
- College of Chemistry and Chemical Engineering
- Southwest University
- Chongqing
| | - Shu Jun Zhen
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry (Southwest University)
- Ministry of Education
- College of Chemistry and Chemical Engineering
- Southwest University
- Chongqing
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41
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Highly sensitive DNA detection using cascade amplification strategy based on hybridization chain reaction and enzyme-induced metallization. Biosens Bioelectron 2014; 66:520-6. [PMID: 25500528 DOI: 10.1016/j.bios.2014.11.035] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2014] [Revised: 11/06/2014] [Accepted: 11/19/2014] [Indexed: 12/16/2022]
Abstract
A novel highly sensitive colorimetric assay for DNA detection using cascade amplification strategy based on hybridization chain reaction and enzyme-induced metallization was established. The DNA modified superparamagnetic beads were demonstrated to capture and enrich the target DNA in the hybridization buffer or human plasma. The hybridization chain reaction and enzyme-induced silver metallization on the gold nanoparticles were used as cascade signal amplification for the detection of target DNA. The metalization of silver on the gold nanoparticles induced a significant color change from red to yellow until black depending on the concentration of the target DNA, which could be recognized by naked eyes. This method showed a good specificity for the target DNA detection, with the capabilty to discriminate single-base-pair mismatched DNA mutation (single nucleotide polymorphism). Meanwhile, this approach exhibited an excellent anti-interference capability with the convenience of the magentic seperation and washing, which enabled its usage in complex biological systems such as human blood plasma. As an added benefit, the utilization of hybridization chain reaction and enzyme-induced metallization improved detection sensitivity down to 10pM, which is about 100-fold lower than that of traditional unamplified homogeneous assays.
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42
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Hu K, Kulkarni DD, Choi I, Tsukruk VV. Graphene-polymer nanocomposites for structural and functional applications. Prog Polym Sci 2014. [DOI: 10.1016/j.progpolymsci.2014.03.001] [Citation(s) in RCA: 815] [Impact Index Per Article: 81.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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43
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Li Y, Li Y, Liu Z, Su X. Sensitive fluorometric detection of alkaline phosphatase using a water-soluble conjugated polymer. RSC Adv 2014. [DOI: 10.1039/c4ra05844e] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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44
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Liu XG, Xing XJ, Gao ZN, Wang BS, Tai SX, Tang HW. Influence of three anionic gemini surfactants with different chain lengths on the optical properties of a cationic polyfluorene. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2014; 30:3001-3009. [PMID: 24571294 DOI: 10.1021/la404351m] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
The effects of three sulfonate gemini surfactants with different hydrophobic chain lengths (8, 10, and 12 carbon atoms) on the optical properties of a fluorene-based conjugated cationic polymer poly{[9,9-bis(6'-N,N,N-trimethylammonium)hexyl]-fluorene-phenylene} bromide (PFP) dissolved in DMSO-water solutions (4% v/v) or water were investigated, respectively. When surfactants with PFP dissolved in DMSO-water solutions (4% v/v) are incubated, a decrease in photoluminescence (PL) intensity and a red shift of emission maxima are obtained at low surfactant concentrations. Intriguingly, two different Stern-Volmer constants (KSV1 and KSV2) are obtained and analyzed in detail for the first time. Further increase in the surfactant concentration enhanced PL intensity, and distinct blue shifts of both absorption and emission maxima are observed. Importantly, the turning point between the emission quenching and enhancement is closely related to the hydrophobic chain length: the longer the chain length, the earlier the turning point appears. Simulation studies provide strong evidence to explain these phenomena. Surface tension measurements show more insight on the interactions between PFP and surfactant. On the contrary, no emission quenching is obtained at low surfactant concentrations for PFP dissolved in water.
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Affiliation(s)
- Xue-Guo Liu
- Key Laboratory of Biomedical Polymers (Ministry of Education of China), College of Chemistry and Molecular Sciences, Wuhan University , Wuhan 430072, Hubei, People's Republic of China
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45
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Graphene materials-based energy acceptor systems and sensors. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY C-PHOTOCHEMISTRY REVIEWS 2014. [DOI: 10.1016/j.jphotochemrev.2013.10.002] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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46
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Wang F, Lu CH, Willner I. From cascaded catalytic nucleic acids to enzyme-DNA nanostructures: controlling reactivity, sensing, logic operations, and assembly of complex structures. Chem Rev 2014; 114:2881-941. [PMID: 24576227 DOI: 10.1021/cr400354z] [Citation(s) in RCA: 494] [Impact Index Per Article: 49.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Fuan Wang
- Institute of Chemistry, The Center for Nanoscience and Nanotechnology, The Hebrew University of Jerusalem , Jerusalem 91904, Israel
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47
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Yu C, Wu Y, Zeng F, Li X, Shi J, Wu S. Hyperbranched Polyester-Based Fluorescent Probe for Histone Deacetylase via Aggregation-Induced Emission. Biomacromolecules 2013; 14:4507-14. [DOI: 10.1021/bm401548u] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Changmin Yu
- College of Materials Science & Engineering, State Key Laboratory of Luminescent Materials & Devices, South China University of Technology, Guangzhou 510640, China
| | - Yinglong Wu
- College of Materials Science & Engineering, State Key Laboratory of Luminescent Materials & Devices, South China University of Technology, Guangzhou 510640, China
| | - Fang Zeng
- College of Materials Science & Engineering, State Key Laboratory of Luminescent Materials & Devices, South China University of Technology, Guangzhou 510640, China
| | - Xizhen Li
- College of Materials Science & Engineering, State Key Laboratory of Luminescent Materials & Devices, South China University of Technology, Guangzhou 510640, China
| | - Jianbin Shi
- College of Materials Science & Engineering, College of Science, Beijing Institute of Technology, Beijing 100081, China
| | - Shuizhu Wu
- College of Materials Science & Engineering, State Key Laboratory of Luminescent Materials & Devices, South China University of Technology, Guangzhou 510640, China
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48
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Xing XJ, Zhou Y, Liu XG, Tang HW, Pang DW. Amplified fluorescent assay of potassium ions using graphene oxide and a conjugated cationic polymer. Analyst 2013; 138:6301-4. [DOI: 10.1039/c3an01282d] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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