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Synergistic Degradation of a Hyperuricemia-Causing Metabolite Using One-Pot Enzyme-Nanozyme Cascade Reactions. Sci Rep 2017; 7:44330. [PMID: 28287162 PMCID: PMC5347090 DOI: 10.1038/srep44330] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2016] [Accepted: 02/07/2017] [Indexed: 12/12/2022] Open
Abstract
Multi-enzyme cascade reactions are frequently found in living organisms, in particular when an intermediate should be eliminated. Recently, enzyme-mimic nanomaterials (nanozymes) received much attention for various applications, because they are usually more stable and cost-effective than enzymes. However, enzyme-nanozyme cascade reations have not been yet extensively exploited. Therefore, in this study, we investigated one-pot enzyme-nanozyme cascade reactions using urate oxidase (UOX) and catalase-mimic gold nanoparticle nanozyme (AuNP) with the ultimate goal of treatment of hyperuricemia. UOX degrades hyperuricemia-causing uric acid, but also generates hydrogen peroxide raising several health concerns. We successfully demonstrated that one-pot UOX-AuNP cascade systems degrade uric acid more than five times faster than UOX alone, by eliminating potentially cytotoxic hydrogen peroxide, similar to enzyme-enzyme reactions.
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52
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Seker UOS, Chen AY, Citorik RJ, Lu TK. Synthetic Biogenesis of Bacterial Amyloid Nanomaterials with Tunable Inorganic-Organic Interfaces and Electrical Conductivity. ACS Synth Biol 2017; 6:266-275. [PMID: 27794590 PMCID: PMC6422533 DOI: 10.1021/acssynbio.6b00166] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Amyloids are highly ordered, hierarchal protein nanoassemblies. Functional amyloids in bacterial biofilms, such as Escherichia coli curli fibers, are formed by the polymerization of monomeric proteins secreted into the extracellular space. Curli is synthesized by living cells, is primarily composed of the major curlin subunit CsgA, and forms biological nanofibers with high aspect ratios. Here, we explore the application of curli fibers for nanotechnology by engineering curli to mediate tunable biological interfaces with inorganic materials and to controllably form gold nanoparticles and gold nanowires. Specifically, we used cell-synthesized curli fibers as templates for nucleating and growing gold nanoparticles and showed that nanoparticle size could be modulated as a function of curli fiber gold-binding affinity. Furthermore, we demonstrated that gold nanoparticles can be preseeded onto curli fibers and followed by gold enhancement to form nanowires. Using these two approaches, we created artificial cellular systems that integrate inorganic-organic materials to achieve tunable electrical conductivity. We envision that cell-synthesized amyloid nanofibers will be useful for interfacing abiotic and biotic systems to create living functional materials..
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Affiliation(s)
- Urartu Ozgur Safak Seker
- Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology, Cambridge, Massachusetts 02142, United States
- Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
- UNAM-Institute of Materials Science and Nanotechnology, Bilkent University, 06800 Ankara, Turkey
| | - Allen Y. Chen
- Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology, Cambridge, Massachusetts 02142, United States
- Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Robert J. Citorik
- Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology, Cambridge, Massachusetts 02142, United States
- Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
- MIT Microbiology Program, 77 Massachusetts Avenue, Cambridge Massachusetts 02139, United States
| | - Timothy K. Lu
- Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology, Cambridge, Massachusetts 02142, United States
- Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
- MIT Microbiology Program, 77 Massachusetts Avenue, Cambridge Massachusetts 02139, United States
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53
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Kapur A, Aldeek F, Ji X, Safi M, Wang W, Del Cid A, Steinbock O, Mattoussi H. Self-Assembled Gold Nanoparticle-Fluorescent Protein Conjugates as Platforms for Sensing Thiolate Compounds via Modulation of Energy Transfer Quenching. Bioconjug Chem 2017; 28:678-687. [PMID: 28052676 DOI: 10.1021/acs.bioconjchem.7b00006] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The ability of Au and other metal nanostructures to strongly quench the fluorescence of proximal fluorophores (dyes and fluorescent proteins) has made AuNP conjugates attractive for use as platforms for sensor development based on energy transfer interactions. In this study, we first characterize the energy transfer quenching of mCherry fluorescent proteins immobilized on AuNPs via metal-histidine coordination, where parameters such as NP size and number of attached proteins are varied. Using steady-state and time-resolved fluorescence measurements, we recorded very high mCherry quenching, with efficiency reaching ∼95-97%, independent of the NP size or number of bound fluorophores (i.e., conjugate valence). We further exploited these findings to develop a solution phase sensing platform targeting thiolate compounds. Energy transfer (ET) was employed as a transduction mechanism to monitor the competitive displacement of mCherry from the Au surface upon the introduction of varying amounts of thiolates with different size and coordination numbers. Our results show that the competitive displacement of mCherry depends on the thiolate concentration, time of reaction, and type of thiol derivatives used. Further analysis of the PL recovery data provides a measure for the equilibrium dissociation constant (Kd-1) for these compounds. These findings combined indicate that the AuNP-fluorescent protein conjugates may offer a potentially useful platform for thiol sensing both in solution and in cell cultures.
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Affiliation(s)
- Anshika Kapur
- Department of Chemistry and Biochemistry, Florida State University , Tallahassee, Florida 32306-4390, United States
| | - Fadi Aldeek
- Department of Chemistry and Biochemistry, Florida State University , Tallahassee, Florida 32306-4390, United States
| | - Xin Ji
- Department of Chemistry and Biochemistry, Florida State University , Tallahassee, Florida 32306-4390, United States
| | - Malak Safi
- Department of Chemistry and Biochemistry, Florida State University , Tallahassee, Florida 32306-4390, United States
| | - Wentao Wang
- Department of Chemistry and Biochemistry, Florida State University , Tallahassee, Florida 32306-4390, United States
| | - Ada Del Cid
- Department of Chemistry and Biochemistry, Florida State University , Tallahassee, Florida 32306-4390, United States
| | - Oliver Steinbock
- Department of Chemistry and Biochemistry, Florida State University , Tallahassee, Florida 32306-4390, United States
| | - Hedi Mattoussi
- Department of Chemistry and Biochemistry, Florida State University , Tallahassee, Florida 32306-4390, United States
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54
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Interaction and bioconjugation of CdSe/ZnS core/shell quantum dots with maltose-binding protein. COMPUT THEOR CHEM 2017. [DOI: 10.1016/j.comptc.2016.12.038] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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55
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Wang J, Fan J, Li J, Liu L, Wang J, Jiang P, Liu X, Qiu L. In-capillary probing of quantum dots and fluorescent protein self-assembly and displacement using Förster resonance energy transfer. J Sep Sci 2017; 40:933-939. [PMID: 27935249 DOI: 10.1002/jssc.201600937] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2016] [Revised: 11/09/2016] [Accepted: 11/28/2016] [Indexed: 12/31/2022]
Abstract
Herein, a Förster resonance energy transfer system was designed, which consisted of CdSe/ZnS quantum dots donor and mCherry fluorescent protein acceptor. The quantum dots and the mCherry proteins were conjugated to permit Förster resonance energy transfer. Capillary electrophoresis with fluorescence detection was used for the analyses for the described system. The quantum dots and mCherry were sequentially injected into the capillary, while the real-time fluorescence signal of donor and acceptor was simultaneously monitored by two channels with fixed wavelength detectors. An effective separation of complexes from free donor and acceptor was achieved. Results showed quantum dots and hexahistidine tagged mCherry had high affinity and the assembly was affected by His6 -mCherry/quantum dot molar ratio. The kinetics of the self-assembly was calculated using the Hill equation. The microscopic dissociation constant values for out of- and in-capillary assays were 10.49 and 23.39 μM, respectively. The capillary electrophoresis with fluorescence detection that monitored ligands competition assay further delineated the different binding capacities of histidine containing peptide ligands for binding sites on quantum dots. This work demonstrated a novel approach for the improvement of Förster resonance energy transfer for higher efficiency, increased sensitivity, intuitionistic observation, and low sample requirements of the in-capillary probing system.
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Affiliation(s)
- Jianhao Wang
- School of Pharmaceutical Engineering and Life Science, Changzhou University, Changzhou, Jiangsu, People's Republic of China
| | - Jie Fan
- School of Pharmaceutical Engineering and Life Science, Changzhou University, Changzhou, Jiangsu, People's Republic of China
| | - Jinchen Li
- School of Pharmaceutical Engineering and Life Science, Changzhou University, Changzhou, Jiangsu, People's Republic of China
| | - Li Liu
- School of Pharmaceutical Engineering and Life Science, Changzhou University, Changzhou, Jiangsu, People's Republic of China
| | - Jianpeng Wang
- School of Pharmaceutical Engineering and Life Science, Changzhou University, Changzhou, Jiangsu, People's Republic of China
| | - Pengju Jiang
- School of Pharmaceutical Engineering and Life Science, Changzhou University, Changzhou, Jiangsu, People's Republic of China
- Key Laboratory of Synthetic Biology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai, People's Republic of China
| | - Xiaoqian Liu
- School of Pharmaceutical Engineering and Life Science, Changzhou University, Changzhou, Jiangsu, People's Republic of China
| | - Lin Qiu
- School of Pharmaceutical Engineering and Life Science, Changzhou University, Changzhou, Jiangsu, People's Republic of China
- State Key Laboratory of Coordination Chemistry, Nanjing University, Nanjing, Jiangsu, People's Republic of China
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56
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Massey M, Li JJ, Algar WR. Multifunctional Concentric FRET-Quantum Dot Probes for Tracking and Imaging of Proteolytic Activity. Methods Mol Biol 2017; 1530:63-97. [PMID: 28150196 DOI: 10.1007/978-1-4939-6646-2_4] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Proteolysis has many important roles in physiological regulation. It is involved in numerous cell signaling processes and the pathogenesis of many diseases, including cancers. Methods of visualizing and assaying proteolytic activity are therefore in demand. Förster resonance energy transfer (FRET) probes offer several advantages in this respect. FRET supports end-point or real-time measurements, does not require washing or separation steps, and can be implemented in various assay or imaging formats. In this chapter, we describe methodology for preparing self-assembled concentric FRET (cFRET) probes for multiplexed tracking and imaging of proteolytic activity. The cFRET probe comprises a green-emitting semiconductor quantum dot (QD) conjugated with multiple copies of two different peptide substrates for two target proteases. The peptide substrates are labeled with different fluorescent dyes, Alexa Fluor 555 and Alexa Fluor 647, and FRET occurs between the QD and both dyes, as well as between the two dyes. This design enables a single QD probe to track the activity of two proteases simultaneously. Fundamental cFRET theory is presented, and procedures for using the cFRET probe for quantitative measurement of the activity of two model proteases are given, including calibration, fluorescence plate reader or microscope imaging assays, and data analysis. Sufficient detail is provided for other researchers to adapt this method to their specific requirements and proteolytic systems of interest.
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Affiliation(s)
- Melissa Massey
- Department of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, British Columbia, Canada, V6T 1Z1
| | - Jia Jun Li
- Department of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, British Columbia, Canada, V6T 1Z1
| | - W Russ Algar
- Department of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, British Columbia, Canada, V6T 1Z1.
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57
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Algar WR, Khachatrian A, Melinger JS, Huston AL, Stewart MH, Susumu K, Blanco-Canosa JB, Oh E, Dawson PE, Medintz IL. Concurrent Modulation of Quantum Dot Photoluminescence Using a Combination of Charge Transfer and Förster Resonance Energy Transfer: Competitive Quenching and Multiplexed Biosensing Modality. J Am Chem Soc 2016; 139:363-372. [DOI: 10.1021/jacs.6b11042] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
- W. Russ Algar
- Department
of Chemistry, University of British Columbia, Vancouver, BC, V6T 1Z1, Canada
| | - Ani Khachatrian
- Sotera Defense Solutions, Columbia, Maryland 21046, United States
| | | | | | | | - Kimihiro Susumu
- Sotera Defense Solutions, Columbia, Maryland 21046, United States
| | - Juan B. Blanco-Canosa
- Departments
of Chemistry and Cell Biology, The Scripps Research Institute, La Jolla, California 92037, United States
| | - Eunkeu Oh
- Sotera Defense Solutions, Columbia, Maryland 21046, United States
| | - Philip E. Dawson
- Departments
of Chemistry and Cell Biology, The Scripps Research Institute, La Jolla, California 92037, United States
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58
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Safi M, Domitrovic T, Kapur A, Zhan N, Aldeek F, Johnson JE, Mattoussi H. Intracellular Delivery of Luminescent Quantum Dots Mediated by a Virus-Derived Lytic Peptide. Bioconjug Chem 2016; 28:64-74. [DOI: 10.1021/acs.bioconjchem.6b00609] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Malak Safi
- Florida State University, Department of Chemistry
and Biochemistry, 95 Chieftan
Way, Tallahassee, Florida 32306, United States
| | - Tatiana Domitrovic
- The Scripps Research Institute, Department of
Integrative Structural and Computational Biology, MB31, La Jolla, California 92037, United States
| | | | - Naiqian Zhan
- Florida State University, Department of Chemistry
and Biochemistry, 95 Chieftan
Way, Tallahassee, Florida 32306, United States
| | - Fadi Aldeek
- Florida State University, Department of Chemistry
and Biochemistry, 95 Chieftan
Way, Tallahassee, Florida 32306, United States
| | - John E. Johnson
- The Scripps Research Institute, Department of
Integrative Structural and Computational Biology, MB31, La Jolla, California 92037, United States
| | - Hedi Mattoussi
- Florida State University, Department of Chemistry
and Biochemistry, 95 Chieftan
Way, Tallahassee, Florida 32306, United States
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59
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Lin J, Countryman P, Chen H, Pan H, Fan Y, Jiang Y, Kaur P, Miao W, Gurgel G, You C, Piehler J, Kad NM, Riehn R, Opresko PL, Smith S, Tao YJ, Wang H. Functional interplay between SA1 and TRF1 in telomeric DNA binding and DNA-DNA pairing. Nucleic Acids Res 2016; 44:6363-76. [PMID: 27298259 PMCID: PMC5291270 DOI: 10.1093/nar/gkw518] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2016] [Accepted: 05/30/2016] [Indexed: 12/23/2022] Open
Abstract
Proper chromosome alignment and segregation during mitosis depend on cohesion between sister chromatids. Cohesion is thought to occur through the entrapment of DNA within the tripartite ring (Smc1, Smc3 and Rad21) with enforcement from a fourth subunit (SA1/SA2). Surprisingly, cohesin rings do not play a major role in sister telomere cohesion. Instead, this role is replaced by SA1 and telomere binding proteins (TRF1 and TIN2). Neither the DNA binding property of SA1 nor this unique telomere cohesion mechanism is understood. Here, using single-molecule fluorescence imaging, we discover that SA1 displays two-state binding on DNA: searching by one-dimensional (1D) free diffusion versus recognition through subdiffusive sliding at telomeric regions. The AT-hook motif in SA1 plays dual roles in modulating non-specific DNA binding and subdiffusive dynamics over telomeric regions. TRF1 tethers SA1 within telomeric regions that SA1 transiently interacts with. SA1 and TRF1 together form longer DNA–DNA pairing tracts than with TRF1 alone, as revealed by atomic force microscopy imaging. These results suggest that at telomeres cohesion relies on the molecular interplay between TRF1 and SA1 to promote DNA–DNA pairing, while along chromosomal arms the core cohesin assembly might also depend on SA1 1D diffusion on DNA and sequence-specific DNA binding.
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Affiliation(s)
- Jiangguo Lin
- School of Bioscience and Engineering, South China University of Technology, Guangzhou, Guangdong 510006, P.R. China Physics Department, North Carolina State University, Raleigh, North Carolina, NC 27695, USA
| | - Preston Countryman
- Physics Department, North Carolina State University, Raleigh, North Carolina, NC 27695, USA
| | - Haijiang Chen
- Department of BioSciences, Rice University, Houston, TX 77005, USA Institute of Microbiology and College of Life Sciences, Zhejiang University, Hangzhou, Zhejiang 310058, P.R. China
| | - Hai Pan
- Physics Department, North Carolina State University, Raleigh, North Carolina, NC 27695, USA
| | - Yanlin Fan
- Department of BioSciences, Rice University, Houston, TX 77005, USA
| | - Yunyun Jiang
- Department of BioSciences, Rice University, Houston, TX 77005, USA
| | - Parminder Kaur
- Physics Department, North Carolina State University, Raleigh, North Carolina, NC 27695, USA
| | - Wang Miao
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450014, P.R. China
| | - Gisele Gurgel
- Biomanufacturing Training and Education Center, North Carolina State University, Raleigh, North Carolina, NC 27695, USA
| | - Changjiang You
- Division of Biophysics, Universität Osnabrück, Barbarstrasse 11, 49076 Osnabrück, Germany
| | - Jacob Piehler
- Division of Biophysics, Universität Osnabrück, Barbarstrasse 11, 49076 Osnabrück, Germany
| | - Neil M Kad
- School of Biosciences, University of Kent, Canterbury, Kent CT2 7NJ, UK
| | - Robert Riehn
- Physics Department, North Carolina State University, Raleigh, North Carolina, NC 27695, USA
| | - Patricia L Opresko
- Department of Environmental and Occupational Health, University of Pittsburgh, PA 15213, USA
| | - Susan Smith
- Kimmel Center for Biology and Medicine at the Skirball Institute, Department of Pathology, New York University School of Medicine, New York, NY 10016, USA
| | - Yizhi Jane Tao
- Department of BioSciences, Rice University, Houston, TX 77005, USA
| | - Hong Wang
- Physics Department, North Carolina State University, Raleigh, North Carolina, NC 27695, USA
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60
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Zhao X, Shen Y, Adogla EA, Viswanath A, Tan R, Benicewicz BC, Greytak AB, Lin Y, Wang Q. Surface labeling of enveloped virus with polymeric imidazole ligand-capped quantum dots via the metabolic incorporation of phospholipids into host cells. J Mater Chem B 2016; 4:2421-2427. [PMID: 32263192 DOI: 10.1039/c6tb00263c] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
We report a general method for the preparation of quantum dot-labeled viruses through a strain-promoted azide-alkyne cycloaddition (SPAAC) reaction. The quantum dot sample was functionalized with methacrylate-based polymeric imidazole ligands (MA-PILs) bearing dibenzocyclooctyne groups. Enveloped measles virus was labeled with azide groups through the metabolic incorporation of a choline analogue into the host cell membrane, and then linked with the modified QDs. The virus retained its infectious ability against host cells after the modification with MA-PIL capped QDs.
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Affiliation(s)
- Xia Zhao
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P. R. China
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61
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Alam R, Karam LM, Doane TL, Coopersmith K, Fontaine DM, Branchini BR, Maye MM. Probing Bioluminescence Resonance Energy Transfer in Quantum Rod-Luciferase Nanoconjugates. ACS NANO 2016; 10:1969-77. [PMID: 26760436 DOI: 10.1021/acsnano.5b05966] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
We describe the necessary design criteria to create highly efficient energy transfer conjugates containing luciferase enzymes derived from Photinus pyralis (Ppy) and semiconductor quantum rods (QRs) with rod-in-rod (r/r) microstructure. By fine-tuning the synthetic conditions, CdSe/CdS r/r-QRs were prepared with two different emission colors and three different aspect ratios (l/w) each. These were hybridized with blue, green, and red emitting Ppy, leading to a number of new BRET nanoconjugates. Measurements of the emission BRET ratio (BR) indicate that the resulting energy transfer is highly dependent on QR energy accepting properties, which include absorption, quantum yield, and optical anisotropy, as well as its morphological and topological properties, such as aspect ratio and defect concentration. The highest BR was found using r/r-QRs with lower l/w that were conjugated with red Ppy, which may be activating one of the anisotropic CdSe core energy levels. The role QR surface defects play on Ppy binding, and energy transfer was studied by growth of gold nanoparticles at the defects, which indicated that each QR set has different sites. The Ppy binding at those sites is suggested by the observed BRET red-shift as a function of Ppy-to-QR loading (L), where the lowest L results in highest efficiency and furthest shift.
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Affiliation(s)
- Rabeka Alam
- Department of Chemistry, Syracuse University , Syracuse, New York 13244, United States
| | - Liliana M Karam
- Department of Chemistry, Syracuse University , Syracuse, New York 13244, United States
| | - Tennyson L Doane
- Department of Chemistry, Syracuse University , Syracuse, New York 13244, United States
| | - Kaitlin Coopersmith
- Department of Chemistry, Syracuse University , Syracuse, New York 13244, United States
| | - Danielle M Fontaine
- Department of Chemistry, Connecticut College , New London, Connecticut 06320, United States
| | - Bruce R Branchini
- Department of Chemistry, Connecticut College , New London, Connecticut 06320, United States
| | - Mathew M Maye
- Department of Chemistry, Syracuse University , Syracuse, New York 13244, United States
- Syracuse Biomaterials Institute, Syracuse University , Syracuse, New York 13244, United States
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62
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Surface engineered gold nanoparticles through highly stable metal–surfactant complexes. J Colloid Interface Sci 2016; 464:110-6. [DOI: 10.1016/j.jcis.2015.10.034] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2015] [Revised: 10/12/2015] [Accepted: 10/13/2015] [Indexed: 11/29/2022]
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63
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Petryayeva E, Algar WR. A job for quantum dots: use of a smartphone and 3D-printed accessory for all-in-one excitation and imaging of photoluminescence. Anal Bioanal Chem 2016; 408:2913-25. [DOI: 10.1007/s00216-015-9300-3] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2015] [Revised: 12/17/2015] [Accepted: 12/23/2015] [Indexed: 10/22/2022]
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64
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Li JJ, Algar WR. A long-wavelength quantum dot-concentric FRET configuration: characterization and application in a multiplexed hybridization assay. Analyst 2016; 141:3636-47. [DOI: 10.1039/c6an00492j] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Quantum dot-based concentric Förster resonance energy transfer (cFRET) is a promising modality for the development of multifunctional fluorescent probes for bioanalysis and bioimaging. A new long-wavelength configuration and multiplexed hybridization assay format expands the scope of cFRET.
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Affiliation(s)
- Jia Jun Li
- Department of Chemistry
- University of British Columbia
- Vancouver
- Canada
| | - W. Russ Algar
- Department of Chemistry
- University of British Columbia
- Vancouver
- Canada
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65
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Dhayagude AC, Maiti N, Debnath AK, Joshi SS, Kapoor S. Metal nanoparticle catalyzed charge rearrangement in selenourea probed by surface-enhanced Raman scattering. RSC Adv 2016. [DOI: 10.1039/c5ra24583d] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
The adsorption behavior of selenourea (SeU) on Ag and Au nanoparticles was investigated using the surface-enhanced Raman scattering technique in combination with X-ray photoelectron spectroscopy and density functional theoretical calculations.
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Affiliation(s)
- Akshay C. Dhayagude
- Radiation and Photochemistry Division
- Bhabha Atomic Research Centre
- Mumbai-400085
- India
| | - Nandita Maiti
- Radiation and Photochemistry Division
- Bhabha Atomic Research Centre
- Mumbai-400085
- India
| | - Anil K. Debnath
- Technical Physics Division
- Bhabha Atomic Research Centre
- Mumbai-400085
- India
| | | | - Sudhir Kapoor
- Radiation and Photochemistry Division
- Bhabha Atomic Research Centre
- Mumbai-400085
- India
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66
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Wang W, Ji X, Kapur A, Zhang C, Mattoussi H. A multifunctional polymer combining the imidazole and zwitterion motifs as a biocompatible compact coating for quantum dots. J Am Chem Soc 2015; 137:14158-72. [PMID: 26465679 DOI: 10.1021/jacs.5b08915] [Citation(s) in RCA: 86] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
We introduce a set of multicoordinating imidazole- and zwitterion-based ligands suited for surface functionalization of quantum dots (QDs). The polymeric ligands are built using a one-step nucleophilic addition reaction between poly(isobutylene-alt-maleic anhydride) and distinct amine-containing functionalities. This has allowed us to introduce several imidazole anchoring groups along the polymer chain for tight coordination to the QD surface and a controllable number of zwitterion moieties for water solubilization. It has also permitted the introduction of reactive and biomolecular groups for further conjugation and targeting. The QDs capped with these new ligands exhibit excellent long-term colloidal stability over a broad range of pH, toward excess electrolyte, in cell-growth media, and in the presence of natural reducing agents such as glutathione. These QDs are also resistant to the oxidizing agent H2O2. More importantly, by the use of zwitterion moieties as the hydrophilic block, this polymer design provides QDs with a thin coating and compact overall dimensions. These QDs are easily self-assembled with full size proteins expressed with a polyhistidine tag via metal-histidine coordination. Additionally, the incorporation of amine groups allows covalent coupling of the QDs to the neurotransmitter dopamine. This yields redox-active QD platforms that can be used to track pH changes and detect Fe ions and cysteine through charge-transfer interactions. Finally, we found that QDs cap-exchanged with folic acid-functionalized ligands could effectively target cancer cells, where folate-receptor-mediated endocytosis of QDs into living cells was time- and concentration-dependent.
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Affiliation(s)
- Wentao Wang
- Department of Chemistry and Biochemistry, Florida State University , 95 Chieftan Way, Tallahassee, Florida 32306, United States
| | - Xin Ji
- Department of Chemistry and Biochemistry, Florida State University , 95 Chieftan Way, Tallahassee, Florida 32306, United States
| | - Anshika Kapur
- Department of Chemistry and Biochemistry, Florida State University , 95 Chieftan Way, Tallahassee, Florida 32306, United States
| | - Chengqi Zhang
- Department of Chemistry and Biochemistry, Florida State University , 95 Chieftan Way, Tallahassee, Florida 32306, United States
| | - Hedi Mattoussi
- Department of Chemistry and Biochemistry, Florida State University , 95 Chieftan Way, Tallahassee, Florida 32306, United States
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67
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Zhou J, Yang Y, Zhang CY. Toward Biocompatible Semiconductor Quantum Dots: From Biosynthesis and Bioconjugation to Biomedical Application. Chem Rev 2015; 115:11669-717. [DOI: 10.1021/acs.chemrev.5b00049] [Citation(s) in RCA: 472] [Impact Index Per Article: 52.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Juan Zhou
- State
Key Laboratory of Virology, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan 430071, China
- Single-Molecule
Detection and Imaging Laboratory, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China
| | - Yong Yang
- Single-Molecule
Detection and Imaging Laboratory, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China
| | - Chun-yang Zhang
- College
of Chemistry, Chemical Engineering and Materials Science, Collaborative
Innovation Center of Functionalized Probes for Chemical Imaging in
Universities of Shandong, Key Laboratory of Molecular and Nano Probes,
Ministry of Education, Shandong Provincial Key Laboratory of Clean
Production of Fine Chemicals, Shandong Normal University, Jinan 250014, China
- Single-Molecule
Detection and Imaging Laboratory, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China
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68
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Affiliation(s)
- Miao Wu
- Department of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, British Columbia V6T 1Z1, Canada
| | - W. Russ Algar
- Department of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, British Columbia V6T 1Z1, Canada
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69
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QD-Based FRET Probes at a Glance. SENSORS 2015; 15:13028-51. [PMID: 26053750 PMCID: PMC4507597 DOI: 10.3390/s150613028] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/08/2015] [Revised: 05/20/2015] [Accepted: 05/22/2015] [Indexed: 12/21/2022]
Abstract
The unique optoelectronic properties of quantum dots (QDs) give them significant advantages over traditional organic dyes, not only as fluorescent labels for bioimaging, but also as emissive sensing probes. QD sensors that function via manipulation of fluorescent resonance energy transfer (FRET) are of special interest due to the multiple response mechanisms that may be utilized, which in turn imparts enhanced flexibility in their design. They may also function as ratiometric, or "color-changing" probes. In this review, we describe the fundamentals of FRET and provide examples of QD-FRET sensors as grouped by their response mechanisms such as link cleavage and structural rearrangement. An overview of early works, recent advances, and various models of QD-FRET sensors for the measurement of pH and oxygen, as well as the presence of metal ions and proteins such as enzymes, are also provided.
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70
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Preparation of compact biocompatible quantum dots using multicoordinating molecular-scale ligands based on a zwitterionic hydrophilic motif and lipoic acid anchors. Nat Protoc 2015; 10:859-74. [DOI: 10.1038/nprot.2015.050] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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71
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Geng X, Grove TZ. Repeat protein mediated synthesis of gold nanoparticles: effect of protein shape on the morphological and optical properties. RSC Adv 2015. [DOI: 10.1039/c4ra12014k] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Engineered repeat proteins were used to elucidate the effects of protein shape on the morphology and plasmonic properties of Au NPs, which will further guide the rational design of modular protein based bioconjugate frameworks.
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Affiliation(s)
- Xi Geng
- Department of Chemistry
- Virginia Polytechnic Institute and State University
- Blacksburg
- USA
| | - Tijana Z. Grove
- Department of Chemistry
- Virginia Polytechnic Institute and State University
- Blacksburg
- USA
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72
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Palui G, Aldeek F, Wang W, Mattoussi H. Strategies for interfacing inorganic nanocrystals with biological systems based on polymer-coating. Chem Soc Rev 2015; 44:193-227. [DOI: 10.1039/c4cs00124a] [Citation(s) in RCA: 164] [Impact Index Per Article: 18.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
A representative set of nanocrystals made of semiconductors, Au and iron oxide, surface-capped with polymer ligands presenting various metal-coordinating groups.
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Affiliation(s)
- Goutam Palui
- Florida State University
- Department of Chemistry and Biochemistry
- Tallahassee
- USA
| | - Fadi Aldeek
- Florida State University
- Department of Chemistry and Biochemistry
- Tallahassee
- USA
| | - Wentao Wang
- Florida State University
- Department of Chemistry and Biochemistry
- Tallahassee
- USA
| | - Hedi Mattoussi
- Florida State University
- Department of Chemistry and Biochemistry
- Tallahassee
- USA
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73
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Haller E, Lindner W, Lämmerhofer M. Gold nanoparticle-antibody conjugates for specific extraction and subsequent analysis by liquid chromatography-tandem mass spectrometry of malondialdehyde-modified low density lipoprotein as biomarker for cardiovascular risk. Anal Chim Acta 2014; 857:53-63. [PMID: 25604820 DOI: 10.1016/j.aca.2014.12.024] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2014] [Revised: 12/06/2014] [Accepted: 12/13/2014] [Indexed: 01/05/2023]
Abstract
Oxidized low-density lipoproteins (OxLDLs) like malondialdehyde-modified low-density lipoprotein (MDA-LDL) play a major role in atherosclerosis and have been proposed as useful biomarkers for oxidative stress. In this study, gold-nanoparticles (GNPs) were functionalized via distinct chemistries with anti-MDA-LDL antibodies (Abs) for selective recognition and capture of MDA-LDL from biological matrices. The study focused on optimization of binding affinities and saturation capacities of the antiMDA-LDL-Ab-GNP bioconjugate by exploring distinct random and oriented immobilization approaches, such as (i) direct adsorptive attachment of Abs on the GNP surface, (ii) covalent bonding by amide coupling of Abs to carboxy-terminated-pegylated GNPs, (iii) oriented immobilization via oxidized carbohydrate moiety of the Ab on hydrazide-derivatized GNPs and (iv) cysteine-tagged protein A (cProtA)-bonded GNPs. Depending on immobilization chemistry, up to 3 antibodies per GNP could be immobilized as determined by ELISA. The highest binding capacity was achieved with the GNP-cProtA-Ab bioconjugate which yielded a saturation capacity of 2.24±0.04μgmL(-1) GNP suspension for MDA-LDL with an affinity Kd of 5.25±0.11×10(-10)M. The GNP-cProtA-antiMDA-LDL bioconjugate revealed high specificity for MDA-LDL over copper(II)-oxidized LDL as well as native human LDL. This clearly demonstrates the usefulness of the new GNP-Ab bioconjugates for specific extraction of MDA-LDL from plasma samples as biomarkers of oxidative stress. Their combination as specific immunoextraction nanomaterials with analysis by LC-MS/MS allows sensitive and selective detection of MDA-LDL in complex samples.
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Affiliation(s)
- Elisabeth Haller
- Department of Analytical Chemistry, University of Vienna, Währingerstrasse 38, 1090 Vienna, Austria
| | - Wolfgang Lindner
- Department of Analytical Chemistry, University of Vienna, Währingerstrasse 38, 1090 Vienna, Austria
| | - Michael Lämmerhofer
- Institute of Pharmaceutical Sciences, Pharmaceutical (Bio)Analysis, University of Tübingen, Auf der Morgenstelle 8, 72076 Tübingen, Germany.
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74
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Viswanath A, Shen Y, Green AN, Tan R, Greytak AB, Benicewicz BC. Copolymerization and Synthesis of Multiply Binding Histamine Ligands for the Robust Functionalization of Quantum Dots. Macromolecules 2014. [DOI: 10.1021/ma501955t] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Anand Viswanath
- Department
of Chemistry and Biochemistry, University of South Carolina, Columbia, South Carolina 29208, United States
| | - Yi Shen
- Department
of Chemistry and Biochemistry, University of South Carolina, Columbia, South Carolina 29208, United States
| | - Alexandra N. Green
- Department
of Chemistry and Biochemistry, University of South Carolina, Columbia, South Carolina 29208, United States
| | - Rui Tan
- Department
of Chemistry and Biochemistry, University of South Carolina, Columbia, South Carolina 29208, United States
| | - Andrew B. Greytak
- Department
of Chemistry and Biochemistry, University of South Carolina, Columbia, South Carolina 29208, United States
| | - Brian C. Benicewicz
- Department
of Chemistry and Biochemistry, University of South Carolina, Columbia, South Carolina 29208, United States
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75
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Wu M, Petryayeva E, Algar WR. Quantum dot-based concentric FRET configuration for the parallel detection of protease activity and concentration. Anal Chem 2014; 86:11181-8. [PMID: 25361050 DOI: 10.1021/ac502600a] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Protease expression, activity, and inhibition play crucial roles in a multitude of biological processes; however, these three aspects of their function are difficult for any one bioanalytical probe to measure. To help address this challenge, we report a multifunctional concentric Förster resonance energy transfer (FRET) configuration that combines two modes of biorecognition using aptamers and peptide substrates coassembled to a central semiconductor quantum dot (QD). The aptamer is sensitive to the concentration of protease and the peptide is sensitive to its hydrolytic activity. The role of the QD is to serve as a nanoscale scaffold and initial donor for energy transfer with both Cyanine 3 (Cy3) and Alexa Fluor 647 (A647) fluorescent dyes associated with the aptamer and peptide, respectively. Using thrombin as a model protease, we show that a ratiometric analysis of the emission from the QD, Cy3, and A647 permits discrimination between thrombin and thrombin-like activity, and distinguishes between active, reversibly inhibited, and irreversibly inhibited thrombin. Reliable quantitative results were obtained from a kinetic analysis of the changes in FRET. This concentric FRET format, which capitalizes on both the physical and optical properties of QDs, should be adaptable to other protease targets for which both peptide substrates and binding aptamers are known. It is thus expected to become valuable a tool for the real-time analysis of protease activity and regulation.
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Affiliation(s)
- Miao Wu
- Department of Chemistry, University of British Columbia , 2036 Main Mall, Vancouver, British Columbia V6T 1Z1, Canada
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76
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Howes PD, Chandrawati R, Stevens MM. Bionanotechnology. Colloidal nanoparticles as advanced biological sensors. Science 2014; 346:1247390. [PMID: 25278614 DOI: 10.1126/science.1247390] [Citation(s) in RCA: 607] [Impact Index Per Article: 60.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Colloidal nanoparticle biosensors have received intense scientific attention and offer promising applications in both research and medicine. We review the state of the art in nanoparticle development, surface chemistry, and biosensing mechanisms, discussing how a range of technologies are contributing toward commercial and clinical translation. Recent examples of success include the ultrasensitive detection of cancer biomarkers in human serum and in vivo sensing of methyl mercury. We identify five key materials challenges, including the development of robust mass-scale nanoparticle synthesis methods, and five broader challenges, including the use of simulations and bioinformatics-driven experimental approaches for predictive modeling of biosensor performance. The resultant generation of nanoparticle biosensors will form the basis of high-performance analytical assays, effective multiplexed intracellular sensors, and sophisticated in vivo probes.
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Affiliation(s)
- Philip D Howes
- Department of Materials, Department of Bioengineering, and Institute of Biomedical Engineering, Imperial College London, Exhibition Road, London SW7 2AZ, UK
| | - Rona Chandrawati
- Department of Materials, Department of Bioengineering, and Institute of Biomedical Engineering, Imperial College London, Exhibition Road, London SW7 2AZ, UK
| | - Molly M Stevens
- Department of Materials, Department of Bioengineering, and Institute of Biomedical Engineering, Imperial College London, Exhibition Road, London SW7 2AZ, UK.
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77
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Lee KT, Muller DA, Coffey JW, Robinson KJ, McCarthy JS, Kendall MAF, Corrie SR. Capture of the Circulating Plasmodium falciparum Biomarker HRP2 in a Multiplexed Format, via a Wearable Skin Patch. Anal Chem 2014; 86:10474-83. [DOI: 10.1021/ac5031682] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Khai Tuck Lee
- The University of Queensland, Australian Institute
for Bioengineering and Nanotechnology, Delivery of Drugs and Genes
Group (D2G2), St. Lucia, Queensland 4072, Australia
- ARC
Centre of Excellence in Convergent Bio-Nano Science and Technology, The University of Queensland, St Lucia, Queensland 4072, Australia
| | - David A. Muller
- The University of Queensland, Australian Institute
for Bioengineering and Nanotechnology, Delivery of Drugs and Genes
Group (D2G2), St. Lucia, Queensland 4072, Australia
- Australian Infectious Diseases Research Centre, St. Lucia, Queensland 4067, Australia
- ARC
Centre of Excellence in Convergent Bio-Nano Science and Technology, The University of Queensland, St Lucia, Queensland 4072, Australia
| | - Jacob W. Coffey
- The University of Queensland, Australian Institute
for Bioengineering and Nanotechnology, Delivery of Drugs and Genes
Group (D2G2), St. Lucia, Queensland 4072, Australia
- ARC
Centre of Excellence in Convergent Bio-Nano Science and Technology, The University of Queensland, St Lucia, Queensland 4072, Australia
| | - Kye J. Robinson
- The University of Queensland, Australian Institute
for Bioengineering and Nanotechnology, Delivery of Drugs and Genes
Group (D2G2), St. Lucia, Queensland 4072, Australia
- ARC
Centre of Excellence in Convergent Bio-Nano Science and Technology, The University of Queensland, St Lucia, Queensland 4072, Australia
| | - James S. McCarthy
- Australian Infectious Diseases Research Centre, St. Lucia, Queensland 4067, Australia
- QIMR Berghofer Medical Research Institute, Herston, Queensland 4006, Australia
| | - Mark A. F. Kendall
- The University of Queensland, Australian Institute
for Bioengineering and Nanotechnology, Delivery of Drugs and Genes
Group (D2G2), St. Lucia, Queensland 4072, Australia
- Australian Infectious Diseases Research Centre, St. Lucia, Queensland 4067, Australia
- The University of Queensland, Faculty of Health
Sciences, St. Lucia, Queensland 4072, Australia
- ARC
Centre of Excellence in Convergent Bio-Nano Science and Technology, The University of Queensland, St Lucia, Queensland 4072, Australia
| | - Simon R. Corrie
- The University of Queensland, Australian Institute
for Bioengineering and Nanotechnology, Delivery of Drugs and Genes
Group (D2G2), St. Lucia, Queensland 4072, Australia
- Australian Infectious Diseases Research Centre, St. Lucia, Queensland 4067, Australia
- ARC
Centre of Excellence in Convergent Bio-Nano Science and Technology, The University of Queensland, St Lucia, Queensland 4072, Australia
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78
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Hamley IW, Kirkham S, Dehsorkhi A, Castelletto V, Adamcik J, Mezzenga R, Ruokolainen J, Mazzuca C, Gatto E, Venanzi M, Placidi E, Bilalis P, Iatrou H. Self-Assembly of a Model Peptide Incorporating a Hexa-Histidine Sequence Attached to an Oligo-Alanine Sequence, and Binding to Gold NTA/Nickel Nanoparticles. Biomacromolecules 2014; 15:3412-20. [DOI: 10.1021/bm500950c] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Ian W. Hamley
- Department of Chemistry, University of Reading, Whiteknights, Reading RG6 6AD, United Kingdom
| | - Steven Kirkham
- Department of Chemistry, University of Reading, Whiteknights, Reading RG6 6AD, United Kingdom
| | - Ashkan Dehsorkhi
- Department of Chemistry, University of Reading, Whiteknights, Reading RG6 6AD, United Kingdom
| | - Valeria Castelletto
- Department of Chemistry, University of Reading, Whiteknights, Reading RG6 6AD, United Kingdom
| | - Jozef Adamcik
- Food and Soft Materials Science, ETH Zürich, Schmelzbergstrasse 9, 8092 Zürich, Switzerland
| | - Raffaele Mezzenga
- Food and Soft Materials Science, ETH Zürich, Schmelzbergstrasse 9, 8092 Zürich, Switzerland
| | - Janne Ruokolainen
- Department
of Applied Physics, Aalto University School of Science, P.O. Box 15100, FI-00076 Aalto, Finland
| | - Claudia Mazzuca
- Department of Chemical Sciences
and Technologies, University of Rome “Tor Vergata”, Via
Ricerca Scientifica 1, 00133 Rome, Italy
| | - Emanuela Gatto
- Department of Chemical Sciences
and Technologies, University of Rome “Tor Vergata”, Via
Ricerca Scientifica 1, 00133 Rome, Italy
| | - Mariano Venanzi
- Department of Chemical Sciences
and Technologies, University of Rome “Tor Vergata”, Via
Ricerca Scientifica 1, 00133 Rome, Italy
| | - Ernesto Placidi
- Institute of Structure of
Matter, CNR, Department of Physics, University of Rome “Tor Vergata”, 00133 Rome, Italy
| | - Panayiotis Bilalis
- University of Athens, Department of Chemistry, Panepistimiopolis Zografou, 157 71 Athens, Greece
| | - Hermis Iatrou
- University of Athens, Department of Chemistry, Panepistimiopolis Zografou, 157 71 Athens, Greece
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79
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Fukushima Y, Naito T, Sueyoshi K, Kubo T, Kitagawa F, Otsuka K. Quantitative Ligand Immobilization Using Alginate Hydrogel Formed in a Capillary: Application for Online Affinity Concentration. Anal Chem 2014; 86:5977-82. [DOI: 10.1021/ac501039j] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Yudai Fukushima
- Department
of Material Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto 615-8510, Japan
| | - Toyohiro Naito
- Department
of Material Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto 615-8510, Japan
| | - Kenji Sueyoshi
- Department
of Applied Chemistry, Graduate School of Engineering, Osaka Prefecture University, Sakai, Osaka, 599-8531, Japan
| | - Takuya Kubo
- Department
of Material Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto 615-8510, Japan
| | - Fumihiko Kitagawa
- Department
of Frontier Materials Chemistry, Graduate School of Science and Technology, Hirosaki University, 3 Bunkyo-cho, Hirosaki, Aomori 036-8561, Japan
| | - Koji Otsuka
- Department
of Material Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto 615-8510, Japan
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80
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Kim H, Ng CYW, Algar WR. Quantum dot-based multidonor concentric FRET system and its application to biosensing using an excitation ratio. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2014; 30:5676-5685. [PMID: 24810095 DOI: 10.1021/la501102x] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
A plethora of semiconductor quantum dot (QD)-based probes that rely on Förster resonance energy transfer (FRET) have been developed for the optical detection of a wide array of biological targets. To date, the vast majority of these probes have utilized one-step energy transfer between individual donor-acceptor pairs. Here, we report a new multidonor concentric FRET configuration that comprised two fluorescent dyes assembled around a central CdSeS/ZnS QD through peptide linkers. One of these dyes, either Alexa Fluor 555 (A555) or Alexa Fluor 647 (A647), served as an acceptor for both the central QD and the other coassembled dye, Alexa Fluor 488 (A488). The unresolved emission between the A488 and the QD precluded a standard analysis of FRET efficiency from quenching of donor emission intensity or decay time, instead necessitating an analysis of the two energy transfer pathways from deconvolved excitation spectra. When A647 was the terminal acceptor, both the QD-to-A647 and A488-to-A647 energy transfer pathways could be interrogated with blue light, but only the former could be interrogated with violet light. The different degrees of A647 sensitization between these two excitation wavelengths was a predictable function of the above energy transfer efficiencies and dye stoichiometry, and was exploited for quantitative bioanalysis through an excitation ratio, which is in contrast to the conventional use of an emission ratio with FRET-based probes. Detection of the activity of nanomolar concentrations of trypsin, a model protease that hydrolyzed the A488-labeled peptide linker, was demonstrated using both a fluorescence plate reader and a low-cost, compact device that used two low-power light-emitting diodes (LEDs) as excitation sources and a silicon photodiode to detect A647 emission. This multidonor concentric FRET configuration represents a new modality for ratiometric biosensing with QDs and is potentially useful for portable in vitro diagnostics.
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Affiliation(s)
- Hyungki Kim
- Department of Chemistry, University of British Columbia , 2036 Main Mall, Vancouver, British Columbia V6T 1Z1, Canada
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81
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Petryayeva E, Algar WR. Multiplexed Homogeneous Assays of Proteolytic Activity Using a Smartphone and Quantum Dots. Anal Chem 2014; 86:3195-202. [DOI: 10.1021/ac500131r] [Citation(s) in RCA: 131] [Impact Index Per Article: 13.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Eleonora Petryayeva
- Department
of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, British Columbia V6T 1Z1, Canada
| | - W. Russ Algar
- Department
of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, British Columbia V6T 1Z1, Canada
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82
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Wang W, Aldeek F, Ji X, Zeng B, Mattoussi H. A multifunctional amphiphilic polymer as a platform for surface-functionalizing metallic and other inorganic nanostructures. Faraday Discuss 2014; 175:137-51. [DOI: 10.1039/c4fd00154k] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We designed a new set of polymer ligands that combine multiple metal-coordinating groups and short polyethylene glycol (PEG) moieties in the same structure. The ligand design relies on the controlled grafting of a large number of amine-terminated histamines and PEG short chains onto a poly(isobutylene-alt-maleic anhydride) backbone,viaa one-step nucleophilic addition reaction. This addition reaction is highly efficient, can be carried out in organic media and does not require additional reagents. We show that when imidazole groups are used the resulting polymer ligand can strongly ligate onto metal nanostructures such as nanoparticles (NPs) and nanorods (NRs) made of gold cores. The resulting polymer-coated NPs and NRs exhibit good colloidal stability to pH changes and added electrolytes. This constitutes a departure from the use of thiol-based ligands to coordinate on Au surfaces. The present chemical approach also opens up additional opportunities for designing hydrophilic and reactive platforms where the polymer coating can be adjusted to various metal and metal oxide surfaces by simply modifying or combining the addition reaction with other metal coordinating groups. These could include iron oxide NPs and semiconductor QDs. These polymer-capped NPs and NRs can be used to develop biologically-active platforms with potential use for drug delivery and sensing.
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Affiliation(s)
- Wentao Wang
- Department of Chemistry and Biochemistry
- Florida State University
- Tallahassee, USA
| | - Fadi Aldeek
- Department of Chemistry and Biochemistry
- Florida State University
- Tallahassee, USA
| | - Xin Ji
- Department of Chemistry and Biochemistry
- Florida State University
- Tallahassee, USA
| | - Birong Zeng
- Department of Chemistry and Biochemistry
- Florida State University
- Tallahassee, USA
| | - Hedi Mattoussi
- Department of Chemistry and Biochemistry
- Florida State University
- Tallahassee, USA
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83
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Mavrogiorgis D, Bilalis P, Karatzas A, Skoulas D, Fotinogiannopoulou G, Iatrou H. Controlled polymerization of histidine and synthesis of well-defined stimuli responsive polymers. Elucidation of the structure–aggregation relationship of this highly multifunctional material. Polym Chem 2014. [DOI: 10.1039/c4py00687a] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Synthesis of multifunctional poly(l-histidine) containing polypeptides and hybrid polymers for controlled drug delivery applications.
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Affiliation(s)
| | | | | | | | | | - Hermis Iatrou
- University of Athens
- Chemistry Department
- Athens, Greece
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