1
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Wang H, Yuan F, Wu X, Dong Y, Wang GL. Enzymatic in situ generation of covalently conjugated electron acceptor of PbSe quantum dots for high throughput and versatile photoelectrochemical bioanalysis. Anal Chim Acta 2019; 1058:1-8. [DOI: 10.1016/j.aca.2019.01.057] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2018] [Revised: 01/24/2019] [Accepted: 01/30/2019] [Indexed: 12/21/2022]
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2
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Garoz‐Ruiz J, Perales‐Rondon JV, Heras A, Colina A. Spectroelectrochemistry of Quantum Dots. Isr J Chem 2019. [DOI: 10.1002/ijch.201900028] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Jesus Garoz‐Ruiz
- Department of ChemistryUniversidad de Burgos Pza. Misael Bañuelos s/n E-09001 Burgos Spain
| | - Juan V. Perales‐Rondon
- Department of ChemistryUniversidad de Burgos Pza. Misael Bañuelos s/n E-09001 Burgos Spain
| | - Aranzazu Heras
- Department of ChemistryUniversidad de Burgos Pza. Misael Bañuelos s/n E-09001 Burgos Spain
| | - Alvaro Colina
- Department of ChemistryUniversidad de Burgos Pza. Misael Bañuelos s/n E-09001 Burgos Spain
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3
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Garoz‐Ruiz J, Perales‐Rondon JV, Heras A, Colina A. Spectroelectrochemical Sensing: Current Trends and Challenges. ELECTROANAL 2019. [DOI: 10.1002/elan.201900075] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Jesus Garoz‐Ruiz
- Department of ChemistryUniversidad de Burgos Pza. Misael Bañuelos s/n E-09001 Burgos Spain
| | | | - Aranzazu Heras
- Department of ChemistryUniversidad de Burgos Pza. Misael Bañuelos s/n E-09001 Burgos Spain
| | - Alvaro Colina
- Department of ChemistryUniversidad de Burgos Pza. Misael Bañuelos s/n E-09001 Burgos Spain
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4
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Wang GL, Yuan F, Gu T, Dong Y, Wang Q, Zhao WW. Enzyme-Initiated Quinone-Chitosan Conjugation Chemistry: Toward A General in Situ Strategy for High-Throughput Photoelectrochemical Enzymatic Bioanalysis. Anal Chem 2018; 90:1492-1497. [DOI: 10.1021/acs.analchem.7b04625] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Guang-Li Wang
- Key
Laboratory of Synthetic and Biological Colloids, Ministry of Education,
School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, China
| | - Fang Yuan
- Key
Laboratory of Synthetic and Biological Colloids, Ministry of Education,
School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, China
| | - Tiantian Gu
- Key
Laboratory of Synthetic and Biological Colloids, Ministry of Education,
School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, China
| | - Yuming Dong
- Key
Laboratory of Synthetic and Biological Colloids, Ministry of Education,
School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, China
| | - Qian Wang
- State
Key Laboratory of Analytical Chemistry for Life Science and Collaborative
Innovation Center of Chemistry for Life Science, School of Chemistry
and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Wei-Wei Zhao
- State
Key Laboratory of Analytical Chemistry for Life Science and Collaborative
Innovation Center of Chemistry for Life Science, School of Chemistry
and Chemical Engineering, Nanjing University, Nanjing 210023, China
- Department
of Materials Science and Engineering, Stanford University, Stanford, California 94305, United States
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5
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Zong C, Wu J, Zang Y, Ju H. Resonance energy transfer and electron–hole annihilation induced chemiluminescence of quantum dots for amplified immunoassay. Chem Commun (Camb) 2018; 54:11861-11864. [DOI: 10.1039/c8cc06356g] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A novel enzyme-free chemiluminescence system based on CdTe quantum dots along with a CL signal amplification strategy was designed for sensitive immunoassay.
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Affiliation(s)
- Chen Zong
- State Key Laboratory of Analytical Chemistry for Life Science
- School of Chemistry and Chemical Engineering
- Nanjing University
- Nanjing 210023
- P. R. China
| | - Jie Wu
- State Key Laboratory of Analytical Chemistry for Life Science
- School of Chemistry and Chemical Engineering
- Nanjing University
- Nanjing 210023
- P. R. China
| | - Yang Zang
- State Key Laboratory of Analytical Chemistry for Life Science
- School of Chemistry and Chemical Engineering
- Nanjing University
- Nanjing 210023
- P. R. China
| | - Huangxian Ju
- State Key Laboratory of Analytical Chemistry for Life Science
- School of Chemistry and Chemical Engineering
- Nanjing University
- Nanjing 210023
- P. R. China
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6
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Activation of respiratory Complex I from Escherichia coli studied by fluorescent probes. Heliyon 2017; 3:e00224. [PMID: 28070565 PMCID: PMC5219619 DOI: 10.1016/j.heliyon.2016.e00224] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2016] [Revised: 11/25/2016] [Accepted: 12/20/2016] [Indexed: 02/01/2023] Open
Abstract
Respiratory Complex I from E. coli may exist in two interconverting forms: resting (R) and active (A). The R/A transition of purified, solubilized Complex I occurring upon turnover was studied employing two different fluorescent probes, Annine 6+, and NDB-acetogenin. NADH-induced fluorescent changes of both dyes bound to solubilized Complex I from E. coli were characterized as a function of the protein:dye ratio, temperature, ubiquinone redox state and the enzyme activity. Analysis of this data combined with time-resolved optical measurements of Complex I activity and spectral changes indicated two ubiquinone-binding sites; a possibility of reduction of the tightly-bound quinone in the resting state and reduction of the loosely-bound quinone in the active state is discussed. The results also indicate that upon the activation Complex I undergoes conformational changes which can be mapped to the junction of the hydrophilic and membrane domains in the region of the assumed acetogenin-binding site.
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7
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Gladkovskaya O, Gun'ko YK, O'Connor GM, Gogvadze V, Rochev Y. In one harness: the interplay of cellular responses and subsequent cell fate after quantum dot uptake. Nanomedicine (Lond) 2016; 11:2603-15. [PMID: 27618947 DOI: 10.2217/nnm-2016-0068] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Rapid growth and expansion of engineered nanomaterials will occur when the technology can be used safely. Quantum dots have excellent prospects in clinical applications, but the issue of toxicity has not yet been resolved. To enable their medical implementation, the effect on, and mechanisms in, live cells should be clearly known and predicted. A massive amount of experimental data dedicated to nanotoxicity has been accumulated to-date, but it lacks a logical structure. The current challenge is to organize existing knowledge into lucid biological and mathematical models. In our review we aim to describe the interplay of various cell death mechanisms triggered by quantum dots as a consequence of particle parameters and experimental conditions.
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Affiliation(s)
- Olga Gladkovskaya
- KAUST Catalysis Centre, King Abdullah University of Science & Technology, Thuwal Jeddah 23955-6900, Kingdom of Saudi Arabia.,School of Physics, National University of Ireland, Galway, Ireland.,CÚRAM - Centre for Research in Medical Devices, Galway, Ireland
| | - Yuri K Gun'ko
- CRANN & School of Chemistry, Trinity College Dublin, Ireland.,ITMO University, 197101 Saint Petersburg, Russia
| | | | - Vladimir Gogvadze
- Division of Toxicology, Institute of Environmental Medicine, Karolinska Institutet, Box 210, 171 77 Stockholm, Sweden.,MV Lomonosov Moscow State University, 119991 Moscow, Russia.,Institute of Theoretical & Experimental Biophysics, Pushchino, 142290 Russia
| | - Yury Rochev
- CÚRAM - Centre for Research in Medical Devices, Galway, Ireland.,School of Chemistry, National University of Ireland, Galway, Ireland.,Sechenov First Moscow State Medical University, Institute for Regenerative Medicine
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8
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James TD. Self and directed assembly: people and molecules. Beilstein J Org Chem 2016; 12:391-405. [PMID: 27340435 PMCID: PMC4902004 DOI: 10.3762/bjoc.12.42] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2015] [Accepted: 02/07/2016] [Indexed: 11/23/2022] Open
Abstract
Self-assembly and directed-assembly are two very important aspects of supramolecular chemistry. As a young postgraduate student working in Canada with Tom Fyles my introduction to Supramolecular Chemistry was through the self-assembly of phospholipid membranes to form vesicles for which we were developing unimolecular and self-assembling transporter molecules. The next stage of my development as a scientist was in Japan with Seiji Shinkai where in a “Eureka” moment, the boronic acid templating unit (directed-assembly) of Wulff was combined with photoinduced electron transfer systems pioneered by De Silva. The result was a turn-on fluorescence sensor for saccharides; this simple result has continued to fuel my research to the present day. Throughout my career as well as assembling molecules, I have enjoyed bringing together researchers in order to develop collaborative networks. This is where molecules meet people resulting in assemblies worth more than the individual “molecule” or “researcher”. My role in developing networks with Japan was rewarded by the award of a Daiwa-Adrian Prize in 2013 and I was recently rewarded for developing networks with China with an Inaugural CASE Prize in 2015.
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Affiliation(s)
- Tony D James
- Department of Chemistry, University of Bath, Bath, BA2 7AY UK
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9
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Zhang WH, Ma W, Long YT. Redox-Mediated Indirect Fluorescence Immunoassay for the Detection of Disease Biomarkers Using Dopamine-Functionalized Quantum Dots. Anal Chem 2016; 88:5131-6. [DOI: 10.1021/acs.analchem.6b00048] [Citation(s) in RCA: 90] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Wen-Hui Zhang
- Key Laboratory for Advanced
Materials and Department of Chemistry, East China University of Science and Technology, 130 Meilong Road, Shanghai, 200237, P. R. China
| | - Wei Ma
- Key Laboratory for Advanced
Materials and Department of Chemistry, East China University of Science and Technology, 130 Meilong Road, Shanghai, 200237, P. R. China
| | - Yi-Tao Long
- Key Laboratory for Advanced
Materials and Department of Chemistry, East China University of Science and Technology, 130 Meilong Road, Shanghai, 200237, P. R. China
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10
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Bajwa P, Gao F, Nguyen A, Omogo B, Heyes CD. Influence of the Inner-Shell Architecture on Quantum Yield and Blinking Dynamics in Core/Multishell Quantum Dots. Chemphyschem 2016; 17:731-40. [PMID: 26693950 PMCID: PMC5086001 DOI: 10.1002/cphc.201500868] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2015] [Revised: 11/16/2015] [Indexed: 11/11/2022]
Abstract
Choosing the composition of a shell for QDs is not trivial, as both the band-edge energy offset and interfacial lattice mismatch influence the final optical properties. One way to balance these competing effects is by forming multishells and/or gradient-alloy shells. However, this introduces multiple interfaces, and their relative effects on quantum yield and blinking are not yet fully understood. Here, we undertake a systematic, comparative study of the addition of inner shells of a single component versus gradient-alloy shells of cadmium/zinc chalogenides onto CdSe cores, and then capping with a thin ZnS outer shell to form various core/multishell configurations. We show that architecture of the inner shell between the CdSe core and the outer ZnS shell significantly influences both the quantum yield and blinking dynamics, but that these effects are not correlated-a high ensemble quantum yield doesn't necessarily equate to reduced blinking. Two mathematical models have been proposed to describe the blinking dynamics-the more common power-law model and a more recent multiexponential model. By binning the same data with 1 and 20 ms resolution, we show that the on times can be better described by the multiexponential model, whereas the off times can be better described by the power-law model. We discuss physical mechanisms that might explain this behavior and how it can be affected by the inner-shell architecture.
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Affiliation(s)
- Pooja Bajwa
- Department of Chemistry and Biochemistry, University of Arkansas, 345 N. Campus Drive, Fayetteville, AR, 72701, USA
| | - Feng Gao
- Department of Chemistry and Biochemistry, University of Arkansas, 345 N. Campus Drive, Fayetteville, AR, 72701, USA
| | - Anh Nguyen
- Department of Chemistry and Biochemistry, University of Arkansas, 345 N. Campus Drive, Fayetteville, AR, 72701, USA
| | - Benard Omogo
- Department of Chemistry and Biochemistry, University of Arkansas, 345 N. Campus Drive, Fayetteville, AR, 72701, USA
| | - Colin D Heyes
- Department of Chemistry and Biochemistry, University of Arkansas, 345 N. Campus Drive, Fayetteville, AR, 72701, USA
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11
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Abstract
At this post-genomic era, the focus of life science research has shifted from life genetic information to general biofunctions. Biomolecular sensors based on QDs will play an important role in the identification and detection of biomolecules.
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Affiliation(s)
| | - Jinzhi Lv
- Shanxi Normal University
- Linfen 041004
- PR China
| | - Yan Li
- Shanxi Normal University
- Linfen 041004
- PR China
| | - Guiqin Yan
- Shanxi Normal University
- Linfen 041004
- PR China
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12
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Chai L, Zhou J, Feng H, Tang C, Huang Y, Qian Z. Functionalized Carbon Quantum Dots with Dopamine for Tyrosinase Activity Monitoring and Inhibitor Screening: In Vitro and Intracellular Investigation. ACS APPLIED MATERIALS & INTERFACES 2015; 7:23564-23574. [PMID: 26440479 DOI: 10.1021/acsami.5b06711] [Citation(s) in RCA: 107] [Impact Index Per Article: 11.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Sensitive assay of tyrosinase (TYR) activity is in urgent demand for both fundamental research and practical application, but the exploration of functional materials with good biocompatibility for its activity evaluation at the intracellular level is still challenging until now. In this work, we develop a convenient and real-time assay with high sensitivity for TYR activity/level monitoring and its inhibitor screening based on biocompatible dopamine functionalized carbon quantum dots (Dopa-CQDs). Dopamine with redox property was functionalized on the surface of carbon quantum dots to construct a Dopa-CQDs conjugate with strong bluish green fluorescence. When the dopamine moiety in Dopa-CQDs conjugate was oxidized to a dopaquinone derivative under specific catalysis of TYR, an intraparticle photoinduced electron transfer (PET) process between CQDs and dopaquinone moiety took place, and then the fluorescence of the conjugate could be quenched simultaneously. Quantitative evaluation of TYR activity was established in terms of the relationship between fluorescence quenching efficiency and TYR activity. The assay covered a broad linear range of up to 800 U/L with a low detection limit of 7.0 U/L. Arbutin, a typical inhibitor of TYR, was chosen as an example to assess its function of inhibitor screening, and positive results were observed that fluorescence quenching extent of the probe was reduced in the presence of arbutin. It is also demonstrated that Dopa-CQD conjugate possesses excellent biocompatibility, and can sensitively monitor intracellular tyrosinase level in melanoma cells and intracellular pH changes in living cells, which provides great potential in application of TYR/pH-associated disease monitoring and medical diagnostics.
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Affiliation(s)
- Lujing Chai
- College of Chemistry and Life Science, Zhejiang Normal University , Jinhua 321004, China
| | - Jin Zhou
- Beijing National laboratory for Molecular Sciences, Key Laboratory of Analytical Chemistry for Living Biosystems, Institute of Chemistry, Chinese Academy of Sciences , Bejing 100190, China
| | - Hui Feng
- College of Chemistry and Life Science, Zhejiang Normal University , Jinhua 321004, China
| | - Cong Tang
- College of Chemistry and Life Science, Zhejiang Normal University , Jinhua 321004, China
| | - Yuanyuan Huang
- College of Chemistry and Life Science, Zhejiang Normal University , Jinhua 321004, China
| | - Zhaosheng Qian
- College of Chemistry and Life Science, Zhejiang Normal University , Jinhua 321004, China
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13
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Ma W, Liu HT, Long YT. Monitoring Dopamine Quinone-Induced Dopaminergic Neurotoxicity Using Dopamine Functionalized Quantum Dots. ACS APPLIED MATERIALS & INTERFACES 2015; 7:14352-14358. [PMID: 26070031 DOI: 10.1021/acsami.5b03044] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Dopamine (DA) quinone-induced dopaminergic neurotoxicity is known to occur due to the interaction between DA quinone and cysteine (Cys) residue, and it may play an important a role in pathological processes associated with neurodegeneration. In this study, we monitored the interaction process of DA to form DA quinone and the subsequent Cys residue using dopamine functionalized quantum dots (QDs). The fluorescence (FL) of the QD bioconjugates changes as a function of the structure transformation during the interaction process, providing a potential FL tool for monitoring dopaminergic neurotoxicity.
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14
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Mondal S, Chatti M, Mallick A, Purkayastha P. pH triggered reversible photoinduced electron transfer to and from carbon nanoparticles. Chem Commun (Camb) 2015; 50:6890-3. [PMID: 24838175 DOI: 10.1039/c4cc01669f] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Dopamine functionalized carbon nanoparticles (CNPs) that can act as efficient photoinduced electron donor-acceptor systems depending on the pH of the medium have been synthesized. In acidic media, dopamine on CNPs exists as hydroquinone and serves as an electron donor while under alkaline conditions the corresponding quinone form of dopamine serves as a strong electron acceptor. Application of external NADH to the system can invert the donor-acceptor roles under alkaline conditions.
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Affiliation(s)
- Somen Mondal
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Kolkata, Mohanpur Campus, Mohanpur 741252, India.
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15
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Challenges and advances in quantum dot fluorescent probes to detect reactive oxygen and nitrogen species: A review. Anal Chim Acta 2015; 862:1-13. [DOI: 10.1016/j.aca.2014.08.036] [Citation(s) in RCA: 56] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2014] [Revised: 08/13/2014] [Accepted: 08/15/2014] [Indexed: 01/04/2023]
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16
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Zhu X, Hu J, Zhao Z, Sun M, Chi X, Wang X, Gao J. Kinetic and sensitive analysis of tyrosinase activity using electron transfer complexes: in vitro and intracellular study. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2015; 11:862-870. [PMID: 25285706 DOI: 10.1002/smll.201401595] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/03/2014] [Revised: 07/31/2014] [Indexed: 06/03/2023]
Abstract
Tyrosinase is an important marker of human diseases such as the neurodegeneration associated with Parkinson's disease and melanoma. Sensitive detection of tyrosinase activity in vitro and inside cells is of great significance to medical diagnostics and skin disorder treatments. With unique photophysical properties, semiconductor quantum dots (QDs) are employed as photoluminescent platforms for various biosensing, in particular for the detection of enzyme activities. In this work, QDs are functionalized with tyrosine and zwitterionic molecules to construct a nanometer-scale scaffold (QD-Tyr conjugate), and this is used to test tyrosinase activity in vitro and inside cells. Tyrosinase oxidizes tyrosine to dopachrome and switches on the electron-transfer access, which relates to fluorescence quenching. High quenching efficiency is achieved by shortening the distance between the electron donors and acceptors, which is attributed to the small size of the conjugated tyrosine. Enzymatic process curves reveal the enhanced enzymatic activity on the conjugated nanoparticle substrate, which leads to highly sensitive detection of tyrosinase (as low as 1 nM). It is also demonstrated that QD-Tyr conjugates can sensitively probe intracellular tyrosinase in melanoma cells, which promises great potential in disease monitoring and medical diagnostics.
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Affiliation(s)
- Xianglong Zhu
- State Key Laboratory of Physical Chemistry of Solid Surfaces, The MOE Key Laboratory of Spectrochemical Analysis & Instrumentation, The Key Laboratory for Chemical Biology of Fujian Province and Department of Chemical Biology, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, P. R. China
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17
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Zhang X, Deng J, Shi G, Zhou T. Valence-tautomeric infinite coordination polymer nanoparticles for encapsulation of rhodamine B and its potential application for colorimetric and fluorescence dual mode sensing of hypochlorite. RSC Adv 2015. [DOI: 10.1039/c5ra17114h] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023] Open
Abstract
The colorimetric and fluorescence ClO− sensing based on the stimulus response of valence-tautomeric RhB@{Co(3,5-dbsq)(3,5-dbcat)(bix)} ICP nanoparticles.
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Affiliation(s)
- Xiaolei Zhang
- School of Ecological and Environmental Sciences
- East China Normal University
- Shanghai 200241
- China
| | - Jingjing Deng
- School of Ecological and Environmental Sciences
- East China Normal University
- Shanghai 200241
- China
| | - Guoyue Shi
- Department of Chemistry
- East China Normal University
- Shanghai 200241
- China
| | - Tianshu Zhou
- School of Ecological and Environmental Sciences
- East China Normal University
- Shanghai 200241
- China
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18
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Liu XY, Long YT, Tian H. New insight into photo-induced electron transfer with a simple ubiquinone-based triphenylamine model. RSC Adv 2015. [DOI: 10.1039/c5ra09324d] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
A ubiquinone-based triphenylamine system was designed as a simple model to study the photo-induced electron transfer (PET).
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Affiliation(s)
- Xiao-Yuan Liu
- Key Laboratory for Advanced Materials & Department of Chemistry
- East China University of Science and Technology
- Shanghai
- P. R. China
| | - Yi-Tao Long
- Key Laboratory for Advanced Materials & Department of Chemistry
- East China University of Science and Technology
- Shanghai
- P. R. China
| | - He Tian
- Key Laboratory for Advanced Materials & Department of Chemistry
- East China University of Science and Technology
- Shanghai
- P. R. China
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19
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He X, Ma N. An overview of recent advances in quantum dots for biomedical applications. Colloids Surf B Biointerfaces 2014; 124:118-31. [DOI: 10.1016/j.colsurfb.2014.06.002] [Citation(s) in RCA: 65] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2014] [Revised: 05/23/2014] [Accepted: 06/01/2014] [Indexed: 12/23/2022]
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20
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Ma W, Liu HT, He XP, Zang Y, Li J, Chen GR, Tian H, Long YT. Target-specific imaging of transmembrane receptors using quinonyl glycosides functionalized quantum dots. Anal Chem 2014; 86:5502-7. [PMID: 24803208 DOI: 10.1021/ac501463u] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Here, we describe a novel "switch-on" biosensor based on quinonyl glycosides functionalized quantum dots (QDs) for the specific targeting and imaging of transmembrane glycoprotein receptors on the surface of cancer cells. The design of the quinonyl glycosides lies in that the quinone moiety serves as a quencher of QDs and the glycoside moiety as a biospecific ligand for targeting a receptor. We observed that the quenched photoluminescence of the quinone glycosides functionalized QDs could be significantly recovered by a specific lectin that selectively binds to the glycosides clustering the QDs but was not affected by a panel of nonspecific lectins. Moreover, we determined that quinonyl galactoside functionalized QDs could optically image the asialoglycoprotein receptors of a hepatoma cell line in a target-specific manner. This system might provide new insights into the fabrication of photoluminogenic biosensors for the analysis of the universal ligand-receptor recognitions in nature.
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Affiliation(s)
- Wei Ma
- Key Laboratory for Advanced Materials & Institute of Fine Chemicals, East China University of Science and Technology , Shanghai, P. R. China
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21
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Qin L, He L, Ji C, Li X, Kang SZ, Mu J. Redox heme-proteins mediated fluorescence of CdSe/ZnS quantum dots. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2014; 133:65-72. [PMID: 24705372 DOI: 10.1016/j.jphotobiol.2014.02.017] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/03/2013] [Revised: 02/18/2014] [Accepted: 02/24/2014] [Indexed: 11/29/2022]
Abstract
The redox properties of cytochrome c (Cyt c), hemoglobin (Hb) and myoglobin (Mb) were studied based on electrostatic interactions between Thioglycolic acid (TGA) capped CdSe/ZnS quantum dots (QDs) and proteins. Results indicated that only Cyt c quenched the fluorescence of the QDs at pH>8.0. Under the optimized conditions, a significant fluorescence recovery of the QDs' system was observed when the reduced form of Cyt c incubated with TGA capped QDs, however, the reduced state of Hb and Mb resulted in a more fluorescence quenching on the same size of QDs. Interestingly, the fluorescence changes of QDs-proteins could be switched by modulating the redox potentials of proteins-attached QDs. Moreover, only the oxidized Cyt c form was reduced by the generated O2(-) that significantly enhanced the fluorescence of the QDs' system, which was also demonstrated by fluorescence imaging in HeLa cells.
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Affiliation(s)
- Lixia Qin
- School of Chemical and Environmental Engineering, Shanghai Institute of Technology, 100 Haiquan Road, Shanghai 201418, China
| | - Luwei He
- School of Chemical and Environmental Engineering, Shanghai Institute of Technology, 100 Haiquan Road, Shanghai 201418, China
| | - Congcong Ji
- School of Chemical and Environmental Engineering, Shanghai Institute of Technology, 100 Haiquan Road, Shanghai 201418, China
| | - Xiangqing Li
- School of Chemical and Environmental Engineering, Shanghai Institute of Technology, 100 Haiquan Road, Shanghai 201418, China
| | - Shi-Zhao Kang
- School of Chemical and Environmental Engineering, Shanghai Institute of Technology, 100 Haiquan Road, Shanghai 201418, China
| | - Jin Mu
- School of Chemical and Environmental Engineering, Shanghai Institute of Technology, 100 Haiquan Road, Shanghai 201418, China.
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Ma W, Long YT. Quinone/hydroquinone-functionalized biointerfaces for biological applications from the macro- to nano-scale. Chem Soc Rev 2014; 43:30-41. [DOI: 10.1039/c3cs60174a] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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23
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Li N, Chow AM, Ganesh HVS, Brown IR, Kerman K. Quantum Dot Based Fluorometric Detection of Cancer TF-Antigen. Anal Chem 2013; 85:9699-704. [DOI: 10.1021/ac402082s] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Nan Li
- Department of Physical and Environmental
Sciences, University of Toronto Scarborough, Toronto, Ontario, M1C 1A4, Canada
| | - Ari M. Chow
- Centre for the
Neurobiology of Stress, Department of Biological Sciences, University of Toronto Scarborough, Toronto, Ontario, M1C 1A4, Canada
| | - Hashwin V. S. Ganesh
- Centre for the
Neurobiology of Stress, Department of Biological Sciences, University of Toronto Scarborough, Toronto, Ontario, M1C 1A4, Canada
| | - Ian R. Brown
- Centre for the
Neurobiology of Stress, Department of Biological Sciences, University of Toronto Scarborough, Toronto, Ontario, M1C 1A4, Canada
| | - Kagan Kerman
- Department of Physical and Environmental
Sciences, University of Toronto Scarborough, Toronto, Ontario, M1C 1A4, Canada
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Ubiquinone-quantum dot bioconjugates for in vitro and intracellular complex I sensing. Sci Rep 2013; 3:1537. [PMID: 23524384 PMCID: PMC3607194 DOI: 10.1038/srep01537] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2012] [Accepted: 02/27/2013] [Indexed: 12/21/2022] Open
Abstract
Quantum dots (QDs) have attracted increasing interest in bioimaging and sensing. Here, we report a biosensor of complex I using ubiquinone-terminated disulphides with different alkyl spacers (QnNS, n = 2, 5 and 10) as surface-capping ligands to functionalise CdSe/ZnS QDs. The enhancement or quenching of the QD bioconjugates fluorescence changes as a function of the redox state of QnNS, since QDs are highly sensitive to the electron-transfer processes. The bioconjugated QnNS-QDs emission could be modulated by complex I in the presence of NADH, which simulates an electron-transfer system part of the mitochondrial respiratory chain, providing an in vitro and intracellular complex I sensor. Epidemiological studies suggest that Parkinson's patients have the impaired activity of complex I in the electron-transfer chain of mitochondria. We have demonstrated that the QnNS-QDs system could aid in early stage Parkinson's disease diagnosis and progression monitoring by following different complex I levels in SH-SY5Y cells.
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25
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Adegoke O, Antunes E, Nyokong T. Nanoconjugates of CdTe@ZnS quantum dots with cobalt tetraamino-phthalocyanine: Characterization and implications for the fluorescence recognition of superoxide anion. J Photochem Photobiol A Chem 2013. [DOI: 10.1016/j.jphotochem.2013.02.010] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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26
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Li L, Cheng Y, Ding Y, Gu S, Zhang F, Yu W. Synthesis of Functionalized Core-Shell CdTe/ZnS Nanoparticles and Their Application as a Fluorescence Probe for Norfloxacin Determination. Eur J Inorg Chem 2013. [DOI: 10.1002/ejic.201201372] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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27
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Towner RA, Smith N, Saunders D, Henderson M, Downum K, Lupu F, Silasi-Mansat R, Ramirez DC, Gomez-Mejiba SE, Bonini MG, Ehrenshaft M, Mason RP. In vivo imaging of immuno-spin trapped radicals with molecular magnetic resonance imaging in a diabetic mouse model. Diabetes 2012; 61:2405-13. [PMID: 22698922 PMCID: PMC3447912 DOI: 10.2337/db11-1540] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/02/2011] [Accepted: 04/05/2012] [Indexed: 01/08/2023]
Abstract
Oxidative stress plays a major role in diabetes. In vivo levels of membrane-bound radicals (MBRs) in a streptozotocin-induced diabetic mouse model were uniquely detected by combining molecular magnetic resonance imaging (mMRI) and immunotrapping techniques. An anti-DMPO (5,5-dimethyl-1-pyrroline N-oxide) antibody (Ab) covalently bound to an albumin (BSA)-Gd (gadolinium)-DTPA (diethylene triamine penta acetic acid)-biotin MRI contrast agent (anti-DMPO probe), and mMRI, were used to detect in vivo levels of DMPO-MBR adducts in kidneys, livers, and lungs of diabetic mice, after DMPO administration. Magnetic resonance signal intensities, which increase in the presence of a Gd-based molecular probe, were significantly higher within the livers, kidneys, and lungs of diabetic animals administered the anti-DMPO probe compared with controls. Fluorescence images validated the location of the anti-DMPO probe in excised tissues via conjugation of streptavidin-Cy3, which targeted the probe biotin moiety, and immunohistochemistry was used to validate the presence of DMPO adducts in diabetic mouse livers. This is the first report of noninvasively imaging in vivo levels of MBRs within any disease model. This method can be specifically applied toward diabetes models for in vivo assessment of free radical levels, providing an avenue to more fully understand the role of free radicals in diabetes.
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Affiliation(s)
- Rheal A Towner
- Advanced Magnetic Resonance Center, Oklahoma Medical Research Foundation, Oklahoma City, Oklahoma, USA.
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28
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Zhu L, Ang CY, Li X, Nguyen KT, Tan SY, Agren H, Zhao Y. Luminescent color conversion on cyanostilbene-functionalized quantum dots via in-situ photo-tuning. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2012; 24:4020-4024. [PMID: 22718570 DOI: 10.1002/adma.201200709] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/18/2012] [Indexed: 06/01/2023]
Abstract
Photo-responsive CdSe quantum dots functionalized with the cyanostilbene unit are synthesized. The as-prepared quantum dot hybrid reveals a photo-tunable dual fluorescent characteristic. White light emission can be generated in situ from the hybrid through photoirradiation to adjust the relative intensities of the two complementary emissions. Luminescent color conversion through yellow, white, and blue can be realized by varying the photoirradiation time.
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Affiliation(s)
- Liangliang Zhu
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore
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29
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Jin Z, Hildebrandt N. Semiconductor quantum dots for in vitro diagnostics and cellular imaging. Trends Biotechnol 2012; 30:394-403. [PMID: 22608980 DOI: 10.1016/j.tibtech.2012.04.005] [Citation(s) in RCA: 97] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2012] [Revised: 04/18/2012] [Accepted: 04/18/2012] [Indexed: 12/23/2022]
Abstract
The need for companion diagnostics, point-of-care testing (POCT) and high-throughput screening in clinical diagnostics and personalized medicine has pushed the need for more biological information from a single sample at extremely low concentrations and volumes. Optical biosensors based on semiconductor quantum dots (QDs) can answer these requirements because their unique photophysical properties are ideally suited for highly sensitive multiplexed detection. Many different biological systems have been successfully scrutinized with a large variety of QDs over the past decade but their future as widely applied commercial biosensors is still open. In this review, we highlight recent in vitro diagnostic and cellular imaging applications of QDs and discuss milestones and obstacles on their way toward integration into real-life diagnostic and medical applications.
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Affiliation(s)
- Zongwen Jin
- Université Paris-Sud, Institut d'Electronique Fondamentale, Orsay, France
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30
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Ma W, Li DW, Sutherland TC, Li Y, Long YT, Chen HY. Reversible redox of NADH and NAD+ at a hybrid lipid bilayer membrane using ubiquinone. J Am Chem Soc 2011; 133:12366-9. [PMID: 21774485 DOI: 10.1021/ja204014s] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Here, we report the reversible interconversion between NADH and NAD(+) at a low overpotential, which is in part mediated by ubiquinone embedded in a biomimetic membrane to mimic the initial stages of respiration. This system can be used as a platform to examine biologically relevant electroactive molecules embedded in a natural membrane environment and provide new insights into the mechanism of biological redox cycling.
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Affiliation(s)
- Wei Ma
- Shanghai Key Laboratory of Functional Materials Chemistry and Department of Chemistry, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, PR China
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