151
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Zhu YP, Liu YP, Yuan ZY. Biochemistry-inspired direct synthesis of nitrogen and phosphorus dual-doped microporous carbon spheres for enhanced electrocatalysis. Chem Commun (Camb) 2016; 52:2118-21. [DOI: 10.1039/c5cc08439c] [Citation(s) in RCA: 50] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
N,P-doped microporous carbon spheres based on the self-polymerization peculiarity of dopamine show enhanced electrocatalytic performance in ORR and HER.
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Affiliation(s)
- Yun-Pei Zhu
- Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education)
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)
- College of Chemistry
- Nankai University
- Tianjin 300071
| | - Yu-Ping Liu
- Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education)
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)
- College of Chemistry
- Nankai University
- Tianjin 300071
| | - Zhong-Yong Yuan
- Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education)
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)
- College of Chemistry
- Nankai University
- Tianjin 300071
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152
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Cheng YL, Chen YW, Wang K, Shie MY. Enhanced adhesion and differentiation of human mesenchymal stem cell inside apatite-mineralized/poly(dopamine)-coated poly(ε-caprolactone) scaffolds by stereolithography. J Mater Chem B 2016; 4:6307-6315. [DOI: 10.1039/c6tb01377e] [Citation(s) in RCA: 78] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
The purpose of this study is to develop PCL scaffolds using stereolithography technology and induced modifications using a poly dopamine (PDA)-coated/HA precipitate to stimulate human mesenchymal stem cells (hMSCs).
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Affiliation(s)
- Yih-Lin Cheng
- Department of Mechanical Engineering
- National Taiwan University of Science and Technology
- Taipei City
- Taiwan
| | - Yi-Wen Chen
- Graduate Institute of Biomedical Sciences
- China Medical University
- Taichung City 40447
- Taiwan
- 3D Printing Medical Research Center
| | - Kan Wang
- H. Milton Stewart School of Industrial and Systems Engineering
- Georgia Institute of Technology
- Atlanta
- USA
- Georgia Tech Manufacturing Institute
| | - Ming-You Shie
- 3D Printing Medical Research Center
- China Medical University Hospital
- China Medical University
- Taichung City 40447
- Taiwan
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153
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Qiang W, Hu H, Sun L, Li H, Xu D. Aptamer/Polydopamine Nanospheres Nanocomplex for in Situ Molecular Sensing in Living Cells. Anal Chem 2015; 87:12190-6. [PMID: 26556471 DOI: 10.1021/acs.analchem.5b03075] [Citation(s) in RCA: 76] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
A nanocomplex was developed for molecular sensing in living cells, based on the fluorophore-labeled aptamer and the polydopamine nanospheres (PDANS). Due to the interaction between ssDNA and PDANS, the aptamer was adsorbed onto the surface of PDANS forming the aptamer/PDANS nanocomplex, and the fluorescence was quenched by PDANS through Förster resonance energy transfer (FRET). In vitro assay, the introduction of adenosine triphosphate (ATP) led to the dissociation of the aptamer from the PDANS and the recovery of the fluorescence. The retained fluorescence of the nanocomplex was found to be linear with the concentration of ATP in the range of 0.01-2 mM, and the nanocomplex was highly selective toward ATP. For the strong protecting capability to nucleic acids from enzymatic cleavage and the excellent biocompatibility of PDANS, the nanocomplex was transported into cells and successfully realized "signal on" sensing of ATP in living cells; moreover, the nanocomplex could be employed for ATP semiquantification. This design provides a strategy to develop biosensors based on the polydopamine nanomaterials for intracellular molecules analysis. For the advantages of polydopamine, it would be an excellent candidate for many biological applications, such as gene and drug delivery, intracellular imaging, and in vivo monitoring.
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Affiliation(s)
- Weibing Qiang
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University , 22 Hankou Road, Nanjing, Jiangsu 210093, China
| | - Hongting Hu
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University , 22 Hankou Road, Nanjing, Jiangsu 210093, China
| | - Liang Sun
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University , 22 Hankou Road, Nanjing, Jiangsu 210093, China
| | - Hui Li
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University , 22 Hankou Road, Nanjing, Jiangsu 210093, China
| | - Danke Xu
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University , 22 Hankou Road, Nanjing, Jiangsu 210093, China
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154
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Fan D, Wu C, Wang K, Gu X, Liu Y, Wang E. A polydopamine nanosphere based highly sensitive and selective aptamer cytosensor with enzyme amplification. Chem Commun (Camb) 2015; 52:406-9. [PMID: 26526224 DOI: 10.1039/c5cc06754e] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
With CCRF-CEM as the model cell, a highly sensitive and selective cytosensor was developed by taking advantage of polydopamine nanospheres for the first time. The strategies of aptamer/membrane protein recognition and Exonuclease III assisted cycle amplification were used for improving selectivity and sensitivity. The detection of limit reached was as low as 15 cells per mL.
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Affiliation(s)
- Daoqing Fan
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022, P. R. China.
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155
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Sengupta PP, Gloria JN, Amato DN, Amato DV, Patton DL, Murali B, Flynt AS. Utilizing Intrinsic Properties of Polyaniline to Detect Nucleic Acid Hybridization through UV-Enhanced Electrostatic Interaction. Biomacromolecules 2015; 16:3217-25. [PMID: 26388289 PMCID: PMC4822489 DOI: 10.1021/acs.biomac.5b00935] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Detection of specific RNA or DNA molecules by hybridization to "probe" nucleic acids via complementary base-pairing is a powerful method for analysis of biological systems. Here we describe a strategy for transducing hybridization events through modulating intrinsic properties of the electroconductive polymer polyaniline (PANI). When DNA-based probes electrostatically interact with PANI, its fluorescence properties are increased, a phenomenon that can be enhanced by UV irradiation. Hybridization of target nucleic acids results in dissociation of probes causing PANI fluorescence to return to basal levels. By monitoring restoration of base PANI fluorescence as little as 10(-11) M (10 pM) of target oligonucleotides could be detected within 15 min of hybridization. Detection of complementary oligos was specific, with introduction of a single mismatch failing to form a target-probe duplex that would dissociate from PANI. Furthermore, this approach is robust and is capable of detecting specific RNAs in extracts from animals. This sensor system improves on previously reported strategies by transducing highly specific probe dissociation events through intrinsic properties of a conducting polymer without the need for additional labels.
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Affiliation(s)
- Partha Pratim Sengupta
- Department of Biological Sciences, University of Southern Mississippi, Hattiesburg, Mississippi 39406, United States
| | - Jared N. Gloria
- Department of Biological Sciences, University of Southern Mississippi, Hattiesburg, Mississippi 39406, United States
| | - Dahlia N. Amato
- School of Polymers and High Performance Materials, University of Southern Mississippi, Hattiesburg, Mississippi 39406, United States
| | - Douglas V. Amato
- School of Polymers and High Performance Materials, University of Southern Mississippi, Hattiesburg, Mississippi 39406, United States
| | - Derek L. Patton
- School of Polymers and High Performance Materials, University of Southern Mississippi, Hattiesburg, Mississippi 39406, United States
| | - Beddhu Murali
- School of Computing, University of Southern Mississippi, Hattiesburg, Mississippi 39406, United States
| | - Alex S. Flynt
- Department of Biological Sciences, University of Southern Mississippi, Hattiesburg, Mississippi 39406, United States
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156
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Li N, Hao X, Kang BH, Xu Z, Shi Y, Li NB, Luo HQ. Enzyme-free fluorescent biosensor for the detection of DNA based on core-shell Fe3O4 polydopamine nanoparticles and hybridization chain reaction amplification. Biosens Bioelectron 2015; 77:525-9. [PMID: 26469729 DOI: 10.1016/j.bios.2015.10.004] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2015] [Revised: 09/16/2015] [Accepted: 10/02/2015] [Indexed: 12/21/2022]
Abstract
A novel, highly sensitive assay for quantitative determination of DNA is developed based on hybridization chain reaction (HCR) amplification and the separation via core-shell Fe3O4 polydopamine nanoparticles (Fe3O4@PDA NPs). In this assay, two hairpin probes are designed, one of which is labeled with a 6-carboxyfluorescein (FAM). Without target DNA, auxiliary hairpin probes are stable in solution. However, when target DNA is present, the HCR between the two hairpins is triggered. The HCR products have sticky ends of 24 nt, which are much longer than the length of sticky ends of auxiliary hairpins (6 nt) and make the adsorption much easier by Fe3O4@PDA NPs. With the addition of Fe3O4@PDA NPs, HCR products could be adsorbed because of the strong interaction between their sticky ends and Fe3O4@PDA NPs. As a result, supernatant of the solution with target DNA emits weak fluorescence after separation by magnet, which is much lower than that of the blank solution. The detection limit of the proposed method is as low as 0.05 nM. And the sensing method exhibits high selectivity for the determination between perfectly complementary sequence and target with single base-pair mismatch. Importantly, the application of the sensor for DNA detection in human serum shows that the proposed method works well for biological samples.
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Affiliation(s)
- Na Li
- Key Laboratory of Eco-environments in Three Gorges Reservoir Region (Ministry of Education), School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China.
| | - Xia Hao
- Key Laboratory of Eco-environments in Three Gorges Reservoir Region (Ministry of Education), School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China
| | - Bei Hua Kang
- Key Laboratory of Eco-environments in Three Gorges Reservoir Region (Ministry of Education), School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China
| | - Zhen Xu
- Key Laboratory of Eco-environments in Three Gorges Reservoir Region (Ministry of Education), School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China
| | - Yan Shi
- Key Laboratory of Eco-environments in Three Gorges Reservoir Region (Ministry of Education), School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China
| | - Nian Bing Li
- Key Laboratory of Eco-environments in Three Gorges Reservoir Region (Ministry of Education), School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China
| | - Hong Qun Luo
- Key Laboratory of Eco-environments in Three Gorges Reservoir Region (Ministry of Education), School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China.
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157
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Kang YF, Fang YW, Li YH, Li W, Yin XB. Nucleus-staining with biomolecule-mimicking nitrogen-doped carbon dots prepared by a fast neutralization heat strategy. Chem Commun (Camb) 2015; 51:16956-9. [PMID: 26445735 DOI: 10.1039/c5cc06304c] [Citation(s) in RCA: 57] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Biomolecule-mimicking nitrogen-doped carbon dots (N-Cdots) were synthesized from dopamine by a neutralization heat strategy. Fluorescence imaging of various cells validated their nucleus-staining efficiency. The dopamine-mimicking N-Cdots "trick" nuclear membranes to achieve nuclear localization and imaging.
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Affiliation(s)
- Yan-Fei Kang
- Research Center for Analytical Sciences, College of Chemistry, Nankai University, Tianjin Key Laboratory of Biosensing and Molecular Recognition, State Key Laboratory of Medicinal Chemical Biology, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300071, China.
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158
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Fluorometric detection of mutant DNA oligonucleotide based on toehold strand displacement-driving target recycling strategy and exonuclease III-assisted suppression. Biosens Bioelectron 2015; 77:40-5. [PMID: 26386329 DOI: 10.1016/j.bios.2015.09.027] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2015] [Revised: 08/24/2015] [Accepted: 09/11/2015] [Indexed: 11/24/2022]
Abstract
We describe here a fluorometric assay for sensitive detection of oligonucleotides, based on a target recycling amplification strategy driven by toehold-mediated strand displacement reaction and on exonuclease III (Exo Ш)-assisted fluorescence background suppression strategy. The network consists of a pair of partially complementary DNA hairpins (HP1 and HP2) with 3' overhang ends, between which the spontaneous hybridization is kinetically hindered by the stems. The target DNA is repeatedly used to trigger a recycling progress between the hairpins, generating numerous HP1-HP2 duplex complexes. Exo III was then employed to digest the double strand parts of the residual hairpins and the intermediate products. The fluorescent dye, SYBR Green I, binds to the double-strand DNA products and emits strong fluorescence to achieve sensitive detection of the target DNA with the detection limit of 5.34 pM. Moreover, this proposed strategy showed high discrimination efficiency towards target DNA against mismatched DNA and was successfully applied in the analysis of human serum sample.
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159
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Lynge ME, Schattling P, Städler B. Recent developments in poly(dopamine)-based coatings for biomedical applications. Nanomedicine (Lond) 2015; 10:2725-42. [PMID: 26377046 DOI: 10.2217/nnm.15.89] [Citation(s) in RCA: 72] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
The success of polymer coatings for biomedical applications is undeniable. Among the very successful examples are poly(dopamine) (PDA) films due to their simplicity in deposition and beneficial interaction with biomolecules and cells. The aim of this review is to highlight the findings and achievement of PDA in nanomedicine since 2011. We discuss the progress that has been made to elucidate the structure of PDA and novel aspects considering the assembly of PDA-based films on diverse substrates. We highlight the newest results considering the biological evaluation PDA-based coatings to control cell behavior and the use of PDA in biosensing. The popularity of PDA remains unchanged, but the research efforts start to be consolidated toward more specific aims and clinical applications.
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Affiliation(s)
- Martin E Lynge
- Interdisciplinary Nanoscience Center (iNANO), Aarhus University, Denmark
| | - Philipp Schattling
- Interdisciplinary Nanoscience Center (iNANO), Aarhus University, Denmark
| | - Brigitte Städler
- Interdisciplinary Nanoscience Center (iNANO), Aarhus University, Denmark
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160
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Tian J, Liu Q, Shi J, Hu J, Asiri AM, Sun X, He Y. Rapid, sensitive, and selective fluorescent DNA detection using iron-based metal–organic framework nanorods: Synergies of the metal center and organic linker. Biosens Bioelectron 2015; 71:1-6. [DOI: 10.1016/j.bios.2015.04.009] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2015] [Revised: 03/23/2015] [Accepted: 04/05/2015] [Indexed: 12/11/2022]
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161
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Fan H, Yu X, Liu Y, Shi Z, Liu H, Nie Z, Wu D, Jin Z. Folic acid-polydopamine nanofibers show enhanced ordered-stacking via π-π interactions. SOFT MATTER 2015; 11:4621-4629. [PMID: 25959650 DOI: 10.1039/c5sm00732a] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Recent research has indicated that polydopamine and synthetic eumelanins are optoelectronic biomaterials in which one-dimensional aggregates composed of ordered-stacking oligomers have been proposed as unique organic semiconductors. However, improving the ordered-stacking of oligomers in polydopamine nanostructures is a big challenge. Herein, we first demonstrate how folic acid molecules influence the morphology and nanostructure of polydopamine via tuning the π-π interactions of oligomers. MALDI-TOF mass spectrometry reveals that porphyrin-like tetramers are characteristic of folic acid-polydopamine (FA-PDA) nanofibers. X-ray diffraction combined with simulation studies indicate that these oligomers favour aggregation into graphite-like ordered nanostructures via strong π-π interactions. High-resolution TEM characterization of carbonized FA-PDA hybrids show that in FA-PDA nanofibers the size of the graphite-like domains is over 100 nm. The addition of folic acid in polydopamine enhances the ordered stacking of oligomers in its nanostructure. Our study steps forward to discover the mystery of the structure-property relationship of FA-PDA hybrids. It paves a way to optimize the properties of PDA through the design and selection of oligomer structures.
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Affiliation(s)
- Hailong Fan
- Department of Chemistry, Renmin University of China, Beijing 100872, P. R. China.
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162
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Choi CKK, Li J, Wei K, Xu YJ, Ho LWC, Zhu M, To KKW, Choi CHJ, Bian L. A gold@polydopamine core-shell nanoprobe for long-term intracellular detection of microRNAs in differentiating stem cells. J Am Chem Soc 2015; 137:7337-46. [PMID: 25996312 DOI: 10.1021/jacs.5b01457] [Citation(s) in RCA: 163] [Impact Index Per Article: 18.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
The capability of monitoring the differentiation process in living stem cells is crucial to the understanding of stem cell biology and the practical application of stem-cell-based therapies, yet conventional methods for the analysis of biomarkers related to differentiation require a large number of cells as well as cell lysis. Such requirements lead to the unavoidable loss of cell sources and preclude real-time monitoring of cellular events. In this work, we report the detection of microRNAs (miRNAs) in living human mesenchymal stem cells (hMSCs) by using polydopamine-coated gold nanoparticles (Au@PDA NPs). The PDA shell facilitates the immobilization of fluorescently labeled hairpin DNA strands (hpDNAs) that can recognize specific miRNA targets. The gold core and PDA shell quench the fluorescence of the immobilized hpDNAs, and subsequent binding of the hpDNAs to the target miRNAs leads to their dissociation from Au@PDA NPs and the recovery of fluorescence signals. Remarkably, these Au@PDA-hpDNA nanoprobes can naturally enter stem cells, which are known for their poor transfection efficiency, without the aid of transfection agents. Upon cellular uptake of these nanoprobes, we observe intense and time-dependent fluorescence responses from two important osteogenic marker miRNAs, namely, miR-29b and miR-31, only in hMSCs undergoing osteogenic differentiation and living primary osteoblasts but not in undifferentiated hMSCs and 3T3 fibroblasts. Strikingly, our nanoprobes can afford long-term tracking of miRNAs (5 days) in the differentiating hMSCs without the need of continuously replenishing cell culture medium with fresh nanoprobes. Our results demonstrate the capability of our Au@PDA-hpDNA nanoprobes for monitoring the differentiation status of hMSCs (i.e., differentiating versus undifferentiated) via the detection of specific miRNAs in living stem cells. Our nanoprobes show great promise in the investigation of the long-term dynamics of stem cell differentiation, identification and isolation of specific cell types, and high-throughput drug screening.
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Affiliation(s)
- Chun Kit K Choi
- †Department of Mechanical and Automation Engineering (Biomedical Engineering), ‡Department of Electronic Engineering (Biomedical Engineering), §School of Pharmacy, ∥Shun Hing Institute of Advanced Engineering, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, China
| | - Jinming Li
- †Department of Mechanical and Automation Engineering (Biomedical Engineering), ‡Department of Electronic Engineering (Biomedical Engineering), §School of Pharmacy, ∥Shun Hing Institute of Advanced Engineering, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, China
| | - Kongchang Wei
- †Department of Mechanical and Automation Engineering (Biomedical Engineering), ‡Department of Electronic Engineering (Biomedical Engineering), §School of Pharmacy, ∥Shun Hing Institute of Advanced Engineering, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, China
| | - Yang J Xu
- †Department of Mechanical and Automation Engineering (Biomedical Engineering), ‡Department of Electronic Engineering (Biomedical Engineering), §School of Pharmacy, ∥Shun Hing Institute of Advanced Engineering, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, China
| | - Lok Wai C Ho
- †Department of Mechanical and Automation Engineering (Biomedical Engineering), ‡Department of Electronic Engineering (Biomedical Engineering), §School of Pharmacy, ∥Shun Hing Institute of Advanced Engineering, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, China
| | - Meiling Zhu
- †Department of Mechanical and Automation Engineering (Biomedical Engineering), ‡Department of Electronic Engineering (Biomedical Engineering), §School of Pharmacy, ∥Shun Hing Institute of Advanced Engineering, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, China
| | - Kenneth K W To
- †Department of Mechanical and Automation Engineering (Biomedical Engineering), ‡Department of Electronic Engineering (Biomedical Engineering), §School of Pharmacy, ∥Shun Hing Institute of Advanced Engineering, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, China
| | - Chung Hang J Choi
- †Department of Mechanical and Automation Engineering (Biomedical Engineering), ‡Department of Electronic Engineering (Biomedical Engineering), §School of Pharmacy, ∥Shun Hing Institute of Advanced Engineering, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, China
| | - Liming Bian
- †Department of Mechanical and Automation Engineering (Biomedical Engineering), ‡Department of Electronic Engineering (Biomedical Engineering), §School of Pharmacy, ∥Shun Hing Institute of Advanced Engineering, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, China
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163
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A fluorescent biosensing platform based on the polydopamine nanospheres intergrating with Exonuclease III-assisted target recycling amplification. Biosens Bioelectron 2015; 71:143-149. [PMID: 25897884 DOI: 10.1016/j.bios.2015.04.029] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2015] [Revised: 03/30/2015] [Accepted: 04/12/2015] [Indexed: 11/20/2022]
Abstract
Rapid, cost-effective, sensitive and specific analysis of biomolecules is important in the modern healthcare system. Here, a fluorescent biosensing platform based on the polydopamine nanospheres (PDANS) intergrating with Exonuclease III (Exo III) was developed. Due to the interaction between the ssDNA and the PDANS, the fluorescence of 6-carboxyfluorescein (FAM) labelled in the probe would been quenched by PDANS through FRET. While, in the present of the target DNA, the probe DNA would hybridize with the target DNA to form the double-strand DNA complex. Thus, Exo III could catalyze the stepwise removal of mononucleotides from 3'-terminus in the probe DNA, releasing the target DNA. As the FAM was released from the probe DNA, the fluorescence would no longer been quenched, led to the signal on. As one target DNA molecule could undergo a number of cycles to trigger the degradation of abundant probe DNA, Exo III-assisted target recycling would led to the amplification of the signal. The detection limit for DNA was 5 pM, which was 20 times lower than that without Exo III. And the assay time was largely shortened due to the faster signal recovery kinetics. What is more, this target recycling strategy was also applied to conduct an aptamer-based biosensing platform. The fluorescence intensity was also enhanced for the assay of adenosine triphosphate (ATP). For the Exo III-assisted target recycling amplification, DNA and ATP were fast detected with high sensitivity and selectivity. This work provides opportunities to develop simple, rapid, economical, and sensitive biosensing platforms for biomedical diagnostics.
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164
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Ma L, Lei Z, Liu F, Wang Z. Cy5 labeled single-stranded DNA-polydopamine nanoparticle conjugate-based FRET assay for reactive oxygen species detection. SENSING AND BIO-SENSING RESEARCH 2015. [DOI: 10.1016/j.sbsr.2014.12.006] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/24/2022] Open
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165
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Tian J, Cheng N, Liu Q, Xing W, Sun X. Cobalt Phosphide Nanowires: Efficient Nanostructures for Fluorescence Sensing of Biomolecules and Photocatalytic Evolution of Dihydrogen from Water under Visible Light. Angew Chem Int Ed Engl 2015; 54:5493-7. [DOI: 10.1002/anie.201501237] [Citation(s) in RCA: 199] [Impact Index Per Article: 22.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2015] [Indexed: 12/26/2022]
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166
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Tian J, Cheng N, Liu Q, Xing W, Sun X. Cobalt Phosphide Nanowires: Efficient Nanostructures for Fluorescence Sensing of Biomolecules and Photocatalytic Evolution of Dihydrogen from Water under Visible Light. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201501237] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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167
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Wang D, Chen C, Ke X, Kang N, Shen Y, Liu Y, Zhou X, Wang H, Chen C, Ren L. Bioinspired near-infrared-excited sensing platform for in vitro antioxidant capacity assay based on upconversion nanoparticles and a dopamine-melanin hybrid system. ACS APPLIED MATERIALS & INTERFACES 2015; 7:3030-40. [PMID: 25604145 DOI: 10.1021/am5086269] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
A novel core-shell structure based on upconversion fluorescent nanoparticles (UCNPs) and dopamine-melanin has been developed for evaluation of the antioxidant capacity of biological fluids. In this approach, dopamine-melanin nanoshells facilely formed on the surface of UCNPs act as ultraefficient quenchers for upconversion fluorescence, contributing to a photoinduced electron-transfer mechanism. This spontaneous oxidative polymerization of the dopamine-induced quenching effect could be effectively prevented by the presence of various antioxidants (typically biothiols, ascorbic acid (Vitamin C), and Trolox). The chemical response of the UCNPs@dopamine-melanin hybrid system exhibited great selectivity and sensitivity toward antioxidants relative to other compounds at 100-fold higher concentration. A satisfactory correlation was established between the ratio of the "anti-quenching" fluorescence intensity and the concentration of antioxidants. Besides the response of the upconversion fluorescence signal, a specific evaluation process for antioxidants could be visualized by the color change from colorless to dark gray accompanied by the spontaneous oxidation of dopamine. The near-infrared (NIR)-excited UCNP-based antioxidant capacity assay platform was further used to evaluate the antioxidant capacity of cell extracts and human plasma, and satisfactory sensitivity, repeatability, and recovery rate were obtained. This approach features easy preparation, fluorescence/visual dual mode detection, high specificity to antioxidants, and enhanced sensitivity with NIR excitation, showing great potential for screening and quantitative evaluation of antioxidants in biological systems.
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Affiliation(s)
- Dong Wang
- State Key Laboratory for Physical Chemistry of Solid Surfaces, Department of Chemistry, College of Chemistry and Chemical Engineering, and ‡Department of Biomaterials, College of Materials, Xiamen University , Xiamen 361005, P. R. China
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168
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Wu TF, Hong JD. Dopamine-melanin nanofilms for biomimetic structural coloration. Biomacromolecules 2015; 16:660-6. [PMID: 25587771 DOI: 10.1021/bm501773c] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
This article describes the formation of dopamine-melanin thin films (50-200 nm thick) at an air/dopamine solution interface under static conditions. Beneath these films, spherical melanin granules formed in bulk liquid phase. The thickness of dopamine-melanin films at the interface relied mainly on the concentration of dopamine solution and the reaction time. A plausible mechanism underlining dopamine-melanin thin film formation was proposed based on the hydrophobicity of dopamine-melanin aggregates and the mass transport of the aggregates to the air/solution interface as a result of convective flow. The thickness of the interfacial films increased linearly with the dopamine concentration and the reaction time. The dopamine-melanin thin film and granules (formed in bulk liquid phase) with a double-layered structure were transferred onto a solid substrate to mimic the (keratin layer)/(melanin granules) structure present in bird plumage, thereby preparing full dopamine-melanin thin-film reflectors. The reflected color of the thin-film reflectors depended on the film thickness, which could be adjusted according to the dopamine concentration. The reflectance of the resulted reflectors exhibited a maximal reflectance value of 8-11%, comparable to that of bird plumage (∼11%). This study provides a useful, simple, and low-cost approach to the fabrication of biomimetic thin-film reflectors using full dopamine-melanin materials.
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Affiliation(s)
- Tong-Fei Wu
- Department of Chemistry, Research Institute of Natural Sciences, Incheon National University , 119 Academy-ro, Yeonsu-gu, Incheon 406-772, Republic of Korea
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169
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Xie Y, Lin X, Huang Y, Pan R, Zhu Z, Zhou L, Yang CJ. Highly sensitive and selective detection of miRNA: DNase I-assisted target recycling using DNA probes protected by polydopamine nanospheres. Chem Commun (Camb) 2015; 51:2156-8. [PMID: 25554948 DOI: 10.1039/c4cc08912j] [Citation(s) in RCA: 65] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Based on the protective properties of polydopamine nanospheres for DNA probes against nuclease digestion, we have developed a DNase I-assisted target recycling signal amplification method for highly sensitive and selective detection of miRNA.
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Affiliation(s)
- Yi Xie
- MOE Key Laboratory of Spectrochemical Analysis & Instrumentation, Collaborative Innovation Center of Chemistry for Energy Materials, Key Laboratory of Chemical Biology of Fujian Province, State Key Laboratory of Physical Chemistry of Solid Surfaces, and Department of Chemistry, College of Chemistry & Chemical Engineering, Xiamen University, Xiamen 361005, P. R. China.
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170
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Zou HY, Gao PF, Gao MX, Huang CZ. Polydopamine-embedded Cu2−xSe nanoparticles as a sensitive biosensing platform through the coupling of nanometal surface energy transfer and photo-induced electron transfer. Analyst 2015; 140:4121-9. [DOI: 10.1039/c5an00221d] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
This study innovatively highlights the mechanistic details of NSET and PET (NSET©PET) coupling processes, and the disclosed mechanism provides new opportunities for sensitive biosensing applications.
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Affiliation(s)
- Hong Yan Zou
- Key Laboratory of Luminescence and Real-Time Analytical Chemistry (Southwest University)
- Ministry of Education
- College of Pharmaceutical Sciences
- Southwest University
- Chongqing
| | - Peng Fei Gao
- Key Laboratory of Luminescence and Real-Time Analytical Chemistry (Southwest University)
- Ministry of Education
- College of Pharmaceutical Sciences
- Southwest University
- Chongqing
| | - Ming Xuan Gao
- College of Chemistry and Chemical Engineering
- Southwest University
- Chongqing
- P. R. China
| | - Cheng Zhi Huang
- Key Laboratory of Luminescence and Real-Time Analytical Chemistry (Southwest University)
- Ministry of Education
- College of Pharmaceutical Sciences
- Southwest University
- Chongqing
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171
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Li N, Wang HB, Thia L, Wang JY, Wang X. Enzymatic-reaction induced production of polydopamine nanoparticles for sensitive and visual sensing of urea. Analyst 2015; 140:449-55. [DOI: 10.1039/c4an01900h] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
A novel method to use the enzymatically driven polymerization of dopamine for urea biosensing through spectroscopic or particle size analysis is developed.
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Affiliation(s)
- Nan Li
- School of Chemical and Biomedical Engineering
- Nanyang Technological University
- Singapore
| | - Hai-Bo Wang
- School of Chemical and Biomedical Engineering
- Nanyang Technological University
- Singapore
| | - Larissa Thia
- School of Chemical and Biomedical Engineering
- Nanyang Technological University
- Singapore
- Nanyang Environment & Water Research Institute
- Nanyang Technological University
| | - Jing-Yuan Wang
- Nanyang Environment & Water Research Institute
- Nanyang Technological University
- Singapore
| | - Xin Wang
- School of Chemical and Biomedical Engineering
- Nanyang Technological University
- Singapore
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172
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Li N, Gao ZF, Kang BH, Li NB, Luo HQ. Sensitive mutant DNA biomarker detection based on magnetic nanoparticles and nicking endonuclease assisted fluorescence signal amplification. RSC Adv 2015. [DOI: 10.1039/c4ra17059h] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
Abstract
Amplified fluorescence target DNA detection was developed combining nicking endonuclease assisted target recycling and magnetic nanoparticles with low background signal.
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Affiliation(s)
- Na Li
- Key Laboratory of Eco-environments in Three Gorges Reservoir Region (Southwest University)
- Ministry of Education
- School of Chemistry and Chemical Engineering
- Chongqing 400715
- China
| | - Zhong Feng Gao
- Key Laboratory of Eco-environments in Three Gorges Reservoir Region (Southwest University)
- Ministry of Education
- School of Chemistry and Chemical Engineering
- Chongqing 400715
- China
| | - Bei Hua Kang
- Key Laboratory of Eco-environments in Three Gorges Reservoir Region (Southwest University)
- Ministry of Education
- School of Chemistry and Chemical Engineering
- Chongqing 400715
- China
| | - Nian Bing Li
- Key Laboratory of Eco-environments in Three Gorges Reservoir Region (Southwest University)
- Ministry of Education
- School of Chemistry and Chemical Engineering
- Chongqing 400715
- China
| | - Hong Qun Luo
- Key Laboratory of Eco-environments in Three Gorges Reservoir Region (Southwest University)
- Ministry of Education
- School of Chemistry and Chemical Engineering
- Chongqing 400715
- China
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