1
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Stenspil SG, Laursen BW. Photophysics of fluorescent nanoparticles based on organic dyes - challenges and design principles. Chem Sci 2024; 15:8625-8638. [PMID: 38873083 PMCID: PMC11168078 DOI: 10.1039/d4sc01352b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2024] [Accepted: 05/06/2024] [Indexed: 06/15/2024] Open
Abstract
Fluorescent nanoparticles have become attractive for bioanalysis and imaging, due to their high brightness and photostability. Many different optical materials have been applied in fluorescent nanoparticles with a broad range of properties and characteristics. One appealing approach is the incorporation of molecular organic fluorophores in nanoparticles with the intention of transferring their known attractive solution-state properties directly to the nanoparticles. However, as molecular dyes are packed closely together in the nanoparticles their interactions most often result in fluorescence quenching and change in spectral properties making this approach challenging. In this perspective we will first discuss the origins of quenching and spectral shifts observed in dye based nanoparticles. On this background, we will then describe various designs of dye based NPs and how they address the challenges of dye-dye interactions and quenching. Our aim is to provide a general framework for understanding the supramolecular mechanisms that determine the photophysics of dye based nanoparticles. This framework of molecular photophysics and its relation to the internal structure of dye based nanoparticles can hopefully serve to assist rational design and optimization of new and improved dye based nanoparticles.
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Affiliation(s)
- Stine G Stenspil
- Nano-Science Center & Department of Chemistry, University of Copenhagen Universitetsparken 5 2100 København Ø Denmark
| | - Bo W Laursen
- Nano-Science Center & Department of Chemistry, University of Copenhagen Universitetsparken 5 2100 København Ø Denmark
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2
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Würth C, Behnke T, Gienger J, Resch-Genger U. Efficiency scale for scattering luminescent particles linked to fundamental and measurable spectroscopic properties. Sci Rep 2023; 13:6254. [PMID: 37069220 PMCID: PMC10110600 DOI: 10.1038/s41598-023-32933-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2023] [Accepted: 04/04/2023] [Indexed: 04/19/2023] Open
Abstract
Comparing the performance of molecular and nanoscale luminophores and luminescent micro- and nanoparticles and estimating achievable signal amplitudes and limits of detection requires a standardizable intensity scale. This initiated the development of the relative MESF (number of molecules of equivalent soluble fluorochromes) and ERF (equivalent reference fluorophores) scales for flow cytometry and fluorescence microscopy. Both intensity scales rely on fluorescence intensity values assigned to fluorescent calibration beads by an intensity comparison to spectrally closely matching fluorophore solutions of known concentration using a spectrofluorometer. Alternatively, the luminophore or bead brightness (B) can be determined that equals the product of the absorption cross section (σa) at the excitation wavelength (σa(λex)) and the photoluminescence quantum yield (Φpl). Thereby, an absolute scale based on fundamental and measurable spectroscopic properties can be realized which is independent of particle size, material, and luminophore staining or labeling density and considers the sensitivity of the optical properties of luminophores to their environment. Aiming for establishing such a brightness scale for light-scattering dispersions of luminescent particles with sizes exceeding a few ten nanometers, we demonstrate how the brightness of quasi-monodisperse 25 nm, 100 nm, and 1 µm sized polystyrene particles (PSP), loaded with two different dyes in varying concentrations, can be obtained with a single custom-designed integrating sphere setup that enables the absolute determination of Φpl and transmittance and diffuse reflectance measurements. The resulting Φpl, σa(λex), imaginary parts of the refractive index, and calculated B values of these samples are given in dependence of the number of incorporated dye molecule per particle. Finally, a unitless luminescence efficiency (LE) is defined allowing for the direct comparison of luminescence efficiencies of particles with different sizes.
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Affiliation(s)
- Christian Würth
- Division Biophotonics, Bundesanstalt für Materialforschung und -prüfung (BAM), Richard-Willstaetter Str. 11, 12489, Berlin, Germany.
| | - Thomas Behnke
- Division Biophotonics, Bundesanstalt für Materialforschung und -prüfung (BAM), Richard-Willstaetter Str. 11, 12489, Berlin, Germany
| | - Jonas Gienger
- Physikalisch-Technische Bundesanstalt (PTB), Abbestr. 2-12, 10587, Berlin, Germany
| | - Ute Resch-Genger
- Division Biophotonics, Bundesanstalt für Materialforschung und -prüfung (BAM), Richard-Willstaetter Str. 11, 12489, Berlin, Germany.
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3
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Srivastava P, Tavernaro I, Genger C, Welker P, Hübner O, Resch-Genger U. Multicolor Polystyrene Nanosensors for the Monitoring of Acidic, Neutral, and Basic pH Values and Cellular Uptake Studies. Anal Chem 2022; 94:9656-9664. [PMID: 35731967 DOI: 10.1021/acs.analchem.2c00944] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
A first tricolor fluorescent pH nanosensor is presented, which was rationally designed from biocompatible carboxylated polystyrene nanoparticles and two analyte-responsive molecular fluorophores. Its fabrication involved particle staining with a blue-red-emissive dyad, consisting of a rhodamine moiety responsive to acidic pH values and a pH-inert quinoline fluorophore, followed by the covalent attachment of a fluorescein dye to the particle surface that signals neutral and basic pH values with a green fluorescence. These sensor particles change their fluorescence from blue to red and green, depending on the pH and excitation wavelength, and enable ratiometric pH measurements in the pH range of 3.0-9.0. The localization of the different sensor dyes in the particle core and at the particle surface was confirmed with fluorescence microscopy utilizing analogously prepared polystyrene microparticles. To show the application potential of these polystyrene-based multicolor sensor particles, fluorescence microscopy studies with a human A549 cell line were performed, which revealed the cellular uptake of the pH nanosensor and the differently colored emissions in different cell organelles, that is, compartments of the endosomal-lysosomal pathway. Our results demonstrate the underexplored potential of biocompatible polystyrene particles for multicolor and multianalyte sensing and bioimaging utilizing hydrophobic and/or hydrophilic stimuli-responsive luminophores.
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Affiliation(s)
- Priyanka Srivastava
- Division Biophotonics, Bundesanstalt für Materialforschung und -prüfung (BAM), Richard-Willstätter-Straße 11, 12489 Berlin, Germany
| | - Isabella Tavernaro
- Division Biophotonics, Bundesanstalt für Materialforschung und -prüfung (BAM), Richard-Willstätter-Straße 11, 12489 Berlin, Germany
| | - Claudia Genger
- nanoPET Pharma GmbH, Robert-Koch-Platz 4, Luisencarée, 10115 Berlin, Germany
| | - Pia Welker
- nanoPET Pharma GmbH, Robert-Koch-Platz 4, Luisencarée, 10115 Berlin, Germany
| | - Oskar Hübner
- Division Biophotonics, Bundesanstalt für Materialforschung und -prüfung (BAM), Richard-Willstätter-Straße 11, 12489 Berlin, Germany
| | - Ute Resch-Genger
- Division Biophotonics, Bundesanstalt für Materialforschung und -prüfung (BAM), Richard-Willstätter-Straße 11, 12489 Berlin, Germany
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4
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Guarding food safety with conventional and up-conversion near-infrared fluorescent sensors. J Adv Res 2022; 41:129-144. [DOI: 10.1016/j.jare.2022.01.011] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2021] [Revised: 01/19/2022] [Accepted: 01/24/2022] [Indexed: 01/05/2023] Open
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5
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Chakravarty S, Roy Chowdhury S, Mukherjee S. AIE materials for cancer cell detection, bioimaging and theranostics. PROGRESS IN MOLECULAR BIOLOGY AND TRANSLATIONAL SCIENCE 2021; 185:19-44. [PMID: 34782105 DOI: 10.1016/bs.pmbts.2021.07.032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/17/2023]
Abstract
AIE materials exhibit weakly emissive or non-emissive properties in dilute solutions while emit powerful fluorescence in the aggregated/solid state. Recently, AIE based materials have gained immense attention due to their multifunctional role in cancer cell detection, bioimaging and cancer theranostics. In this present book chapter, we will highlight recent advancements of AIE materials for different cancer theranostics applications.
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Affiliation(s)
- Sudesna Chakravarty
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center (UNMC), Omaha, Nebraska, United States
| | - Sayan Roy Chowdhury
- Department of Chemistry, Virginia Commonwealth University, Richmond, VA, United States
| | - Sudip Mukherjee
- Department of Bioengineering, Rice University, Houston, TX, United States.
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6
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Maisuls I, Wang C, Gutierrez Suburu ME, Wilde S, Daniliuc CG, Brünink D, Doltsinis NL, Ostendorp S, Wilde G, Kösters J, Resch-Genger U, Strassert CA. Ligand-controlled and nanoconfinement-boosted luminescence employing Pt(ii) and Pd(ii) complexes: from color-tunable aggregation-enhanced dual emitters towards self-referenced oxygen reporters. Chem Sci 2021; 12:3270-3281. [PMID: 34164096 PMCID: PMC8179353 DOI: 10.1039/d0sc06126c] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2020] [Accepted: 01/06/2021] [Indexed: 12/22/2022] Open
Abstract
In this work, we describe the synthesis, structural and photophysical characterization of four novel Pd(ii) and Pt(ii) complexes bearing tetradentate luminophoric ligands with high photoluminescence quantum yields (Φ L) and long excited state lifetimes (τ) at room temperature, where the results were interpreted by means of DFT calculations. Incorporation of fluorine atoms into the tetradentate ligand favors aggregation and thereby, a shortened average distance between the metal centers, which provides accessibility to metal-metal-to-ligand charge-transfer (3MMLCT) excimers acting as red-shifted energy traps if compared with the monomeric entities. This supramolecular approach provides an elegant way to enable room-temperature phosphorescence from Pd(ii) complexes, which are otherwise quenched by a thermal population of dissociative states due to a lower ligand field splitting. Encapsulation of these complexes in 100 nm-sized aminated polystyrene nanoparticles enables concentration-controlled aggregation-enhanced dual emission. This phenomenon facilitates the tunability of the absorption and emission colors while providing a rigidified environment supporting an enhanced Φ L up to about 80% and extended τ exceeding 100 μs. Additionally, these nanoarrays constitute rare examples for self-referenced oxygen reporters, since the phosphorescence of the aggregates is insensitive to external influences, whereas the monomeric species drop in luminescence lifetime and intensity with increasing triplet molecular dioxygen concentrations (diffusion-controlled quenching).
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Affiliation(s)
- Iván Maisuls
- Institut für Anorganische und Analytische Chemie, Westfälische Wilhelms-Universität Münster Corrensstraße 28/30 D-48149 Münster Germany
- CeNTech, CiMIC, SoN, Westfälische Wilhelms-Universität Münster Heisenbergstraße 11 D-48149 Münster Germany
| | - Cui Wang
- Division Biophotonics, Federal Institute for Materials Research and Testing (BAM) Richard-Willstaetter-Straße 11 12489 Berlin Germany
- Institute of Chemistry and Biochemistry, Freie Universität Berlin Arnimallee 22 14195 Berlin Germany
| | - Matias E Gutierrez Suburu
- Institut für Anorganische und Analytische Chemie, Westfälische Wilhelms-Universität Münster Corrensstraße 28/30 D-48149 Münster Germany
- CeNTech, CiMIC, SoN, Westfälische Wilhelms-Universität Münster Heisenbergstraße 11 D-48149 Münster Germany
| | - Sebastian Wilde
- Institut für Anorganische und Analytische Chemie, Westfälische Wilhelms-Universität Münster Corrensstraße 28/30 D-48149 Münster Germany
- CeNTech, CiMIC, SoN, Westfälische Wilhelms-Universität Münster Heisenbergstraße 11 D-48149 Münster Germany
| | - Constantin-Gabriel Daniliuc
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster Corrensstraße 40 D-48149 Münster Germany
| | - Dana Brünink
- Institut für Festkörpertheorie, Center for Multiscale Theory and Computation, Westfälische Wilhelms-Universität Münster Wilhelm-Klemm-Straße 10 D-48149 Münster Germany
| | - Nikos L Doltsinis
- Institut für Festkörpertheorie, Center for Multiscale Theory and Computation, Westfälische Wilhelms-Universität Münster Wilhelm-Klemm-Straße 10 D-48149 Münster Germany
| | - Stefan Ostendorp
- Institut für Materialphysik, CeNTech, Westfälische Wilhelms-Universität Münster Wilhelm-Klemm-Straße 10 D-48149 Münster Germany
| | - Gerhard Wilde
- Institut für Materialphysik, CeNTech, Westfälische Wilhelms-Universität Münster Wilhelm-Klemm-Straße 10 D-48149 Münster Germany
| | - Jutta Kösters
- CeNTech, CiMIC, SoN, Westfälische Wilhelms-Universität Münster Heisenbergstraße 11 D-48149 Münster Germany
| | - Ute Resch-Genger
- Division Biophotonics, Federal Institute for Materials Research and Testing (BAM) Richard-Willstaetter-Straße 11 12489 Berlin Germany
| | - Cristian A Strassert
- Institut für Anorganische und Analytische Chemie, Westfälische Wilhelms-Universität Münster Corrensstraße 28/30 D-48149 Münster Germany
- CeNTech, CiMIC, SoN, Westfälische Wilhelms-Universität Münster Heisenbergstraße 11 D-48149 Münster Germany
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7
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Srivastava P, Fürstenwerth PC, Witte JF, Resch-Genger U. Synthesis and spectroscopic characterization of a fluorescent phenanthrene-rhodamine dyad for ratiometric measurements of acid pH values. NEW J CHEM 2021. [DOI: 10.1039/d1nj01573g] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Ratiometric pH sensing by multichannel emission response utilizing excimer/monomer emissions of phenanthrene and rhodamine emission at single excitation wavelength.
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Affiliation(s)
- Priyanka Srivastava
- Division Biophotonics
- Federal Institute for Materials Research and Testing (BAM)
- 12489 Berlin
- Germany
| | | | - Jan Felix Witte
- Institute of Chemistry and Biochemistry
- Freie University Berlin
- 14195 Berlin
- Germany
| | - Ute Resch-Genger
- Division Biophotonics
- Federal Institute for Materials Research and Testing (BAM)
- 12489 Berlin
- Germany
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8
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Kukkar D, Kukkar P, Kumar V, Hong J, Kim KH, Deep A. Recent advances in nanoscale materials for antibody-based cancer theranostics. Biosens Bioelectron 2020; 173:112787. [PMID: 33190049 DOI: 10.1016/j.bios.2020.112787] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2020] [Revised: 10/08/2020] [Accepted: 10/30/2020] [Indexed: 02/07/2023]
Abstract
The quest for advanced management tools or options of various cancers has been on the rise to efficiently reduce their risks of mortality without the demerits of conventional treatments (e.g., undesirable side effects of the medications on non-target tissues, non-targeted distribution, slow clearance of the administered drugs, and the development of drug resistance over the duration of therapy). In this context, nanomaterials-antibody conjugates can offer numerous advantages in the development of cancer theranostics over conventional delivery systems (e.g., highly specific and enhanced biodistribution of the drug in targeted tissues, prolonged systemic circulation, low toxicity, and minimally invasive molecular imaging). This review comprehensively discusses and evaluates recent advances in the application of nanomaterial-antibody bioconjugates for cancer theranostics for the further advancement in the control of diverse cancerous diseases. Further, discussion is expanded to cover the various challenges and limitations associated with the design and development of nanomaterial-antibody conjugates applicable towards better management of cancer.
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Affiliation(s)
- Deepak Kukkar
- Department of Nanotechnology, Sri Guru Granth Sahib World University, Fatehgarh Sahib, Punjab, 140406, India
| | - Preeti Kukkar
- Department of Chemistry, Mata Gujri College, Fatehgarh Sahib, Punjab, 140406, India
| | - Vanish Kumar
- National Agri-Food Biotechnology Institute (NABI), S.A.S. Nagar, Punjab, 140306, India
| | - Jongki Hong
- College of Pharmacy, Kyung Hee University, 26 Kyungheedae-ro, Seoul, 02447, Republic of Korea
| | - Ki-Hyun Kim
- Department of Civil and Environmental Engineering, Hanyang University, Seoul, 04763 Republic of Korea.
| | - Akash Deep
- Central Scientific Instruments Organization (CSIR-CSIO), Sector 30 C, Chandigarh, 160030, India.
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9
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Nirmalananthan-Budau N, Budau JH, Moldenhauer D, Hermann G, Kraus W, Hoffmann K, Paulus B, Resch-Genger U. Substitution pattern controlled aggregation-induced emission in donor-acceptor-donor dyes with one and two propeller-like triphenylamine donors. Phys Chem Chem Phys 2020; 22:14142-14154. [PMID: 32555804 DOI: 10.1039/d0cp00413h] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
We present a comparative study of the spectroscopic properties of the donor-acceptor-donor substituted dyes triphenylamine-allylidenemalononitrile-julolidine (TMJ) and triphenylamine-allylidenemalononitrile-triphenylamine (TMT), bearing one and two propeller-like triphenylamine donor moieties, in solvents of varying polarity and viscosity and in the aggregated and solid state. Our results reveal control of the aggregation-induced spectroscopic changes and the packing motifs of the dye molecules in the solid state by the chemical nature and structure of the second nitrogen-containing donor, i.e., a planar and a rigid julolidine or a twisted triphenyl group. Assuming that the TMT and TMJ aggregates show a comparable arrangement of the molecules to the respective crystals, these different molecular interactions in the solid state are responsible for aggregation induced emission (AIE) in the case of TMT and its absence for TMJ. Moreover, a versatile strategy for the fluorescence enhancement of only weakly emissive AIE dyes is shown, turning these dyes into bright nanoscale fluorescent reporters by using them as stains for preformed polymer particles.
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Affiliation(s)
- Nithiya Nirmalananthan-Budau
- Federal Institute for Material Research and Testing (BAM), Department 1, Division Biophotonics, Richard-Willstätter-Straße 11, D-12489 Berlin, Germany. and Freie Universität Berlin, Institut für Chemie und Biochemie, Takustraße 3, D-14195 Berlin, Germany
| | - Johannes Horst Budau
- Freie Universität Berlin, Institut für Chemie und Biochemie, Takustraße 3, D-14195 Berlin, Germany
| | - Daniel Moldenhauer
- Federal Institute for Material Research and Testing (BAM), Department 1, Division Biophotonics, Richard-Willstätter-Straße 11, D-12489 Berlin, Germany.
| | - Gunter Hermann
- QoD Technologies GmbH, Altensteinstraße 40, D-14195 Berlin, Germany
| | - Werner Kraus
- Federal Institute for Material Research and Testing (BAM), Department 1, Division Structure Analytics, Richard-Willstätter-Straße 11, D-12489 Berlin, Germany
| | - Katrin Hoffmann
- Federal Institute for Material Research and Testing (BAM), Department 1, Division Biophotonics, Richard-Willstätter-Straße 11, D-12489 Berlin, Germany.
| | - Beate Paulus
- Freie Universität Berlin, Institut für Chemie und Biochemie, Takustraße 3, D-14195 Berlin, Germany
| | - Ute Resch-Genger
- Federal Institute for Material Research and Testing (BAM), Department 1, Division Biophotonics, Richard-Willstätter-Straße 11, D-12489 Berlin, Germany.
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10
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Joothamongkon J, Asawapirom U, Thiramanas R, Jangpatarapongsa K, Polpanich D. Near-infrared polyfluorene encapsulated in poly(ε-caprolactone) nanoparticles with remarkable large Stokes shift. RSC Adv 2020; 10:33279-33287. [PMID: 35515050 PMCID: PMC9056670 DOI: 10.1039/d0ra05809b] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2020] [Accepted: 09/01/2020] [Indexed: 01/01/2023] Open
Abstract
Near-infrared (NIR) fluorescent dyes have attracted increasing attention as fluorescent probes in biomedical applications due to their low biological autofluorescence as well as high tissue penetration depth. However, their being hydrophobic in nature limits their clinical use as they are prone to aggregate in the physiological environment. Herein, we have designed and synthesized a novel polymeric NIR fluorescent dye and then encapsulated it into a poly(ε-caprolactone) (PCL) matrix by way of an emulsion–diffusion technique. The effect of the structure of the surfactant on the nanoparticle properties is investigated. Results show that polymeric surfactant, Kolliphor® P188, allows the formation of a high fluorescence intensity of the nanoparticles with the highest level homogeneity and stability. The synthesized nanoparticles show significant advantages in terms of a remarkable large stokes shift (276 nm) in the aqueous solution and excellent biocompatibility. The fabrication process is not limited to encapsulation of polymeric fluorescent dye. The synthesized NIR polymeric nanoparticles would be potentially applicable for biomedical applications. A near-infrared dye encapsulated in poly(ε-caprolactone) nanoparticles have been synthesized. Using Kolliphor® P188 as a surfactant, the stable nanoparticles exhibit strong fluorescence intensity and remarkable large Stokes shift.![]()
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Affiliation(s)
- Jaruwan Joothamongkon
- National Nanotechnology Center
- National Science and Technology Development Agency (NSTDA)
- Thailand
| | - Udom Asawapirom
- National Nanotechnology Center
- National Science and Technology Development Agency (NSTDA)
- Thailand
| | - Raweewan Thiramanas
- National Nanotechnology Center
- National Science and Technology Development Agency (NSTDA)
- Thailand
| | - Kulachart Jangpatarapongsa
- Center for Innovation Development and Technology Transfer
- Faculty of Medical Technology
- Mahidol University
- Bangkok 10700
- Thailand
| | - Duangporn Polpanich
- National Nanotechnology Center
- National Science and Technology Development Agency (NSTDA)
- Thailand
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11
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Martynenko IV, Kusić D, Weigert F, Stafford S, Donnelly FC, Evstigneev R, Gromova Y, Baranov AV, Rühle B, Kunte HJ, Gun’ko YK, Resch-Genger U. Magneto-Fluorescent Microbeads for Bacteria Detection Constructed from Superparamagnetic Fe3O4 Nanoparticles and AIS/ZnS Quantum Dots. Anal Chem 2019; 91:12661-12669. [DOI: 10.1021/acs.analchem.9b01812] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Irina V. Martynenko
- Federal Institute for Materials Research and Testing (BAM), Division Biophotonics, Richard-Willstaetter Strasse 11, D-12489 Berlin, Germany
| | - Dragana Kusić
- Federal Institute for Materials Research and Testing (BAM), Division Biophotonics, Richard-Willstaetter Strasse 11, D-12489 Berlin, Germany
- Federal Institute for Materials Research and Testing (BAM), Division Biodeterioration and Reference Organisms, Unter den Eichen 87, D-12205 Berlin, Germany
| | - Florian Weigert
- Federal Institute for Materials Research and Testing (BAM), Division Biophotonics, Richard-Willstaetter Strasse 11, D-12489 Berlin, Germany
| | | | | | - Roman Evstigneev
- ITMO University, 49 Kronverksky Prospekt, St. Petersburg 197101, Russia
| | - Yulia Gromova
- School of Chemistry, Trinity College Dublin, Dublin 2, Ireland
| | | | - Bastian Rühle
- Federal Institute for Materials Research and Testing (BAM), Division Biophotonics, Richard-Willstaetter Strasse 11, D-12489 Berlin, Germany
| | - Hans-Jörg Kunte
- Federal Institute for Materials Research and Testing (BAM), Division Biodeterioration and Reference Organisms, Unter den Eichen 87, D-12205 Berlin, Germany
| | - Yurii K. Gun’ko
- School of Chemistry, Trinity College Dublin, Dublin 2, Ireland
- ITMO University, 49 Kronverksky Prospekt, St. Petersburg 197101, Russia
| | - Ute Resch-Genger
- Federal Institute for Materials Research and Testing (BAM), Division Biophotonics, Richard-Willstaetter Strasse 11, D-12489 Berlin, Germany
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12
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Advances in the strategies for designing receptor-targeted molecular imaging probes for cancer research. J Control Release 2019; 305:1-17. [DOI: 10.1016/j.jconrel.2019.04.030] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2018] [Revised: 04/09/2019] [Accepted: 04/21/2019] [Indexed: 12/24/2022]
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13
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Martinić I, Eliseeva SV, Collet G, Luo TY, Rosi N, Petoud S. One Approach for Two: Toward the Creation of Near-Infrared Imaging Agents and Rapid Screening of Lanthanide(III) Ion Sensitizers Using Polystyrene Nanobeads. ACS APPLIED BIO MATERIALS 2019; 2:1667-1675. [DOI: 10.1021/acsabm.9b00053] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Ivana Martinić
- Centre de Biophysique Moléculaire CNRS UPR4301, Rue Charles Sadron, 45071 Orléans, France
| | - Svetlana V. Eliseeva
- Centre de Biophysique Moléculaire CNRS UPR4301, Rue Charles Sadron, 45071 Orléans, France
| | - Guillaume Collet
- Centre de Biophysique Moléculaire CNRS UPR4301, Rue Charles Sadron, 45071 Orléans, France
| | - Tian-Yi Luo
- Department of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, United States
| | - Nathaniel Rosi
- Department of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, United States
- Department of Chemical and Petroleum Engineering, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, United States
| | - Stéphane Petoud
- Centre de Biophysique Moléculaire CNRS UPR4301, Rue Charles Sadron, 45071 Orléans, France
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14
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Wang C, Otto S, Dorn M, Heinze K, Resch-Genger U. Luminescent TOP Nanosensors for Simultaneously Measuring Temperature, Oxygen, and pH at a Single Excitation Wavelength. Anal Chem 2019; 91:2337-2344. [DOI: 10.1021/acs.analchem.8b05060] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Cui Wang
- Federal Institute for Materials Research and Testing (BAM), Richard-Willstätter-Strasse 11, Berlin D-12489, Germany
- Institute of Chemistry and Biochemistry, Free University of Berlin, Takustrasse 3, Berlin D-14195, Germany
| | - Sven Otto
- Institute of Inorganic Chemistry and Analytical Chemistry, Johannes Gutenberg University of Mainz, Duesbergweg 10-14, Mainz D-55128, Germany
- Graduate School Materials Science in Mainz, Staudingerweg 9, Mainz D-55128, Germany
| | - Matthias Dorn
- Institute of Inorganic Chemistry and Analytical Chemistry, Johannes Gutenberg University of Mainz, Duesbergweg 10-14, Mainz D-55128, Germany
| | - Katja Heinze
- Institute of Inorganic Chemistry and Analytical Chemistry, Johannes Gutenberg University of Mainz, Duesbergweg 10-14, Mainz D-55128, Germany
| | - Ute Resch-Genger
- Federal Institute for Materials Research and Testing (BAM), Richard-Willstätter-Strasse 11, Berlin D-12489, Germany
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15
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Design of cyclodextrin-based systems for intervention execution. DELIVERY OF THERAPEUTICS FOR BIOGERONTOLOGICAL INTERVENTIONS 2019. [PMCID: PMC7150343 DOI: 10.1016/b978-0-12-816485-3.00005-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Technologies for nucleic acid delivery have displayed high practical potential in mediating genetic manipulation to modulate metabolic pathways to combat aging. In the previous chapter, we have delineated a series of techniques for designing and developing polymeric vectors as nonviral carriers. Based on what we have discussed, this chapter will introduce how the delivery performance and versatility of polymeric vectors can be further enhanced by using cyclodextrins (CDs). Over the years, CDs have shown promising application potential in different areas, ranging from controlled drug release to chiral separation of basic drugs. These applications are largely mediated by the ability of CDs to undergo host–guest inclusion complexation. Upon incorporation of CDs into the design of a polymeric vector, not only can the flexibility of the design be increased, but the development of a multifunctional carrier for genetic manipulation can also be facilitated.
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Sharma A, McCarron P, Matchett K, Hawthorne S, El-Tanani M. Anti-Invasive and Anti-Proliferative Effects of shRNA-Loaded Poly(Lactide-Co-Glycolide) Nanoparticles Following RAN Silencing in MDA-MB231 Breast Cancer Cells. Pharm Res 2018; 36:26. [PMID: 30560466 PMCID: PMC6297200 DOI: 10.1007/s11095-018-2555-6] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2018] [Accepted: 12/04/2018] [Indexed: 12/13/2022]
Abstract
Background Overexpression of the RAN GTP (RAN) gene has been shown to be linked to metastatic activity of MDA-MB231 human breast cancer cells by increasing Ras/MEK/ERK and PI3K/Akt/mTORC1 signalling. The aim of this study was to investigate the potential of polymeric nanoparticles to deliver two novel shRNA sequences, targeted against the RAN gene, to MDA-MB231 cells grown in culture and to assess their effects in a range of biological assays. Methods Biodegradable PLGA nanoparticles, loaded with shRNA-1 and shRNA-4, were fabricated using a double emulsion solvent evaporation technique and characterised for size, zeta potential and polydispersity index before testing on the MDA-MB231 cell line in a range of assays including cell viability, migration, invasion and gene knock down. Results shRNA-loaded nanoparticles were successfully fabricated and delivered to MDA-MB231 cells in culture, where they effectively released their payload, causing a decrease in both cell invasion and cell migration by knocking down RAN gene expression. Conclusion Results indicate the anti-RAN shRNA-loaded nanoparticles deliver and release biological payload to MDA-MB231 cells in culture. This works paves the way for further investigations into the possible use of anti-RAN shRNA-loaded NP formulations for the treatment of breast cancer in vivo.
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Affiliation(s)
- Ankur Sharma
- School of Pharmacy and Pharmaceutical Sciences, Ulster University, Cromore Road, Coleraine, Co. Londonderry, BT52 1SA, UK
| | - Paul McCarron
- School of Pharmacy and Pharmaceutical Sciences, Ulster University, Cromore Road, Coleraine, Co. Londonderry, BT52 1SA, UK
| | - Kyle Matchett
- School of Medicine, Dentistry and Biomedical Sciences, Queen's University Belfast, Health Sciences Building, 97 Lisburn Road, Belfast, BT9 7BL, UK
| | - Susan Hawthorne
- School of Pharmacy and Pharmaceutical Sciences, Ulster University, Cromore Road, Coleraine, Co. Londonderry, BT52 1SA, UK.
| | - Mohamed El-Tanani
- Institute of Cancer Therapeutics, ICT building, University of Bradford, Richmond Road, Bradford, England, BD7 1DP, UK
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Lai WF, Rogach AL, Wong WT. Chemistry and engineering of cyclodextrins for molecular imaging. Chem Soc Rev 2018; 46:6379-6419. [PMID: 28930330 DOI: 10.1039/c7cs00040e] [Citation(s) in RCA: 74] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Cyclodextrins (CDs) are naturally occurring cyclic oligosaccharides bearing a basket-shaped topology with an "inner-outer" amphiphilic character. The abundance of hydroxyl groups enables CDs to be functionalized with multiple targeting ligands and imaging elements. The imaging time, and the payload of different imaging elements, can be tuned by taking advantage of the commercial availability of CDs with different sizes of the cavity. This review aims to offer an outlook of the chemistry and engineering of CDs for the development of molecular probes. Complexation thermodynamics of CDs, and the corresponding implications for probe design, are also presented with examples demonstrating the structural and physiochemical roles played by CDs in the full ambit of molecular imaging. We hope that this review not only offers a synopsis of the current development of CD-based molecular probes, but can also facilitate translation of the incremental advancements from the laboratory to real biomedical applications by illuminating opportunities and challenges for future research.
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Affiliation(s)
- Wing-Fu Lai
- School of Pharmaceutical Sciences, Health Science Centre, Shenzhen University, Shenzhen, China.
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Single- and two-photon imaging of human micrometastases and disseminated tumour cells with conjugates of nanobodies and quantum dots. Sci Rep 2018; 8:4595. [PMID: 29545609 PMCID: PMC5854706 DOI: 10.1038/s41598-018-22973-8] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2017] [Accepted: 03/02/2018] [Indexed: 11/19/2022] Open
Abstract
Early detection of malignant tumours and, especially, micrometastases and disseminated tumour cells is still a challenge. In order to implement highly sensitive diagnostic tools we demonstrate the use of nanoprobes engineered from nanobodies (single-domain antibodies, sdAbs) and fluorescent quantum dots (QDs) for single- and two-photon detection and imaging of human micrometastases and disseminated tumour cells in ex vivo biological samples of breast and pancreatic metastatic tumour mouse models expressing human epidermal growth factor receptor 2 (HER2) or carcinoembryonic antigen (CEA). By staining thin (5–10 µm) paraffin and thick (50 µm) agarose tissue sections, we detected HER2- and CEA-positive human tumour cells infiltrating the surrounding tissues or metastasizing to different organs, including the brain, testis, lung, liver, and lymph nodes. Compared to conventional fluorescently labelled antibodies the sdAb-HER2-QD and sdAb-CEA-QD nanoprobes are superior in detecting micrometastases in tissue sections by lower photobleaching and higher brightness of fluorescence signals ensuring much better discrimination of positive signals versus background. Very high two-photon absorption cross-sections of QDs and small size of the nanoprobes ensure efficient imaging of thick tissue sections unattainable with conventional fluorescent probes. The nanobody–QD probes will help to improve early cancer diagnosis and prognosis of progression by assessing metastasis.
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Mouffouk F, Aouabdi S, Al-Hetlani E, Serrai H, Alrefae T, Leo Chen L. New generation of electrochemical immunoassay based on polymeric nanoparticles for early detection of breast cancer. Int J Nanomedicine 2017; 12:3037-3047. [PMID: 28450780 PMCID: PMC5399978 DOI: 10.2147/ijn.s127086] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Screening and early diagnosis are the key factors for the reduction of mortality rate and treatment cost of cancer. Therefore, sensitive and selective methods that can reveal the low abundance of cancer biomarkers in a biological sample are always desired. Here, we report the development of a novel electrochemical biosensor for early detection of breast cancer by using bioconjugated self-assembled pH-responsive polymeric micelles. The micelles were loaded with ferrocene molecules as "tracers" to specifically target cell surface-associated epithelial mucin (MUC1), a biomarker for breast and other solid carcinoma. The synthesis of target-specific, ferrocene-loaded polymeric micelles was confirmed, and the resulting sensor was capable of detecting the presence of MUC1 in a sample containing about 10 cells/mL. Such a high sensitivity was achieved by maximizing the loading capacity of ferrocene inside the polymeric micelles. Every single event of binding between the antibody and antigen was represented by the signal of hundreds of thousands of ferrocene molecules that were released from the polymeric micelles. This resulted in a significant increase in the intensity of the ferrocene signal detected by cyclic voltammetry.
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Affiliation(s)
- Fouzi Mouffouk
- Department of Chemistry, Kuwait University, Safat, Kuwait
| | - Sihem Aouabdi
- King Abdullah International Medical Research Center (KAIMRC), Jeddah, Kingdom of Saudi Arabia
| | | | - Hacene Serrai
- Department of Radiology and Nuclear Medicine, University Hospital of Gent (UZG), Gent, Belgium
| | - Tareq Alrefae
- Department of Physics, Kuwait University, Safat, Kuwait
| | - Liaohai Leo Chen
- Surgical Precision Research Lab. Department of Surgery, University of Illinois at Chicago, IL, USA
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20
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Haque A, Faizi MSH, Rather JA, Khan MS. Next generation NIR fluorophores for tumor imaging and fluorescence-guided surgery: A review. Bioorg Med Chem 2017; 25:2017-2034. [PMID: 28284863 DOI: 10.1016/j.bmc.2017.02.061] [Citation(s) in RCA: 117] [Impact Index Per Article: 16.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2017] [Revised: 02/25/2017] [Accepted: 02/27/2017] [Indexed: 12/11/2022]
Abstract
Cancer is a group of diseases responsible for the major causes of mortality and morbidity among people of all ages. Even though medical sciences have made enormous growth, complete treatment of this deadly disease is still a challenging task. Last few decades witnessed an impressive growth in the design and development of near infrared (NIR) fluorophores with and without recognition moieties for molecular recognitions, imaging and image guided surgeries. The present article reviews recently reported NIR emitting organic/inorganic fluorophores that targets and accumulates in organelle/organs specifically for molecular imaging of cancerous cells. Near infrared (NIR probe) with or without a tumor-targeting warhead have been considered and discussed for their applications in the field of cancer imaging. In addition, challenges persist in this area are also delineated in this review.
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Affiliation(s)
- Ashanul Haque
- Department of Chemistry, College of Sciences, Sultan Qaboos University, Muscat, Oman.
| | | | - Jahangir Ahmad Rather
- Department of Chemistry, College of Sciences, Sultan Qaboos University, Muscat, Oman
| | - Muhammad S Khan
- Department of Chemistry, College of Sciences, Sultan Qaboos University, Muscat, Oman
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22
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Sun N, Zhou Z, Chao D, Chu X, Du Y, Zhao X, Wang D, Chen C. Novel aromatic polyamides containing 2-diphenylamino-(9,9-dimethylamine) units as multicolored electrochromic and high-contrast electrofluorescent materials. ACTA ACUST UNITED AC 2016. [DOI: 10.1002/pola.28400] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Ningwei Sun
- Alan G. MacDiarmid Laboratory, Department of Chemistry, Jilin University; Changchun 130012 People's Republic of China
| | - Ziwei Zhou
- State Key Laboratory of Supramolecular Structure and Materials, Department of Chemistry; Jilin University; Changchun 130012 People's Republic of China
| | - Danming Chao
- Alan G. MacDiarmid Laboratory, Department of Chemistry, Jilin University; Changchun 130012 People's Republic of China
| | - Xiaojing Chu
- Key Laboratory of Coastal Environmental Processes and Ecological Remediation; Yantai Institute of Coastal Zone Research, Chinese Academy of Science; Yantai 264100 People's Republic of China
| | - Yinlong Du
- Alan G. MacDiarmid Laboratory, Department of Chemistry, Jilin University; Changchun 130012 People's Republic of China
| | - Xiaogang Zhao
- Alan G. MacDiarmid Laboratory, Department of Chemistry, Jilin University; Changchun 130012 People's Republic of China
| | - Daming Wang
- Alan G. MacDiarmid Laboratory, Department of Chemistry, Jilin University; Changchun 130012 People's Republic of China
| | - Chunhai Chen
- Alan G. MacDiarmid Laboratory, Department of Chemistry, Jilin University; Changchun 130012 People's Republic of China
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Moser M, Schneider R, Behnke T, Schneider T, Falkenhagen J, Resch-Genger U. Ellman's and Aldrithiol Assay as Versatile and Complementary Tools for the Quantification of Thiol Groups and Ligands on Nanomaterials. Anal Chem 2016; 88:8624-31. [PMID: 27373999 DOI: 10.1021/acs.analchem.6b01798] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Simple, fast, and versatile methods for the quantification of thiol groups are of considerable interest not only for protein analysis but also for the characterization of the surface chemistry of nanomaterials stabilized with thiol ligands or bearing thiol groups for the subsequent (bio-) functionalization via maleimide-thiol chemistry. Here, we compare two simple colorimetric assays, the widely used Ellman's assay performed at alkaline pH and the aldrithiol assay executed at acidic and neutral pH, with respect to their potential for the quantification of thiol groups and thiol ligands on different types of nanoparticles like polystyrene nanoparticles, semiconductor nanocrystals (SC NC), and noble metal particles, and we derive criteria for their use. In order to assess the underlying reaction mechanisms and to obtain stoichiometry factors mandatory for reliable thiol quantification, both methods were studied photometrically and with electrospray ionization time-of-flight mass spectrometry (ESI-TOF-MS), thereby demonstrating the influence of different thiols on the reaction mechanism. Our results underline the suitability of both methods for the quantification of directly accessible thiol groups or ligands on the surface of 2D- and 3D-supports, here exemplarily polystyrene nanoparticles. Moreover, we could derive strategies for the use of these simple assays for the determination of masked (i.e., not directly accessible) thiol groups like disulfides such as lipoic acid and thiol stabilizing ligands coordinatively bound to Cd and/or Hg surface atoms of II/VI and ternary SC NC and to gold and silver nanoparticles.
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Affiliation(s)
- Marko Moser
- Federal Institute for Materials Research and Testing (BAM), Richard-Willstaetter-Str. 11, D-12489 Berlin, Germany
| | - Ralf Schneider
- Federal Institute for Materials Research and Testing (BAM), Richard-Willstaetter-Str. 11, D-12489 Berlin, Germany
| | - Thomas Behnke
- Federal Institute for Materials Research and Testing (BAM), Richard-Willstaetter-Str. 11, D-12489 Berlin, Germany
| | - Thomas Schneider
- Federal Institute for Materials Research and Testing (BAM), Richard-Willstaetter-Str. 11, D-12489 Berlin, Germany
| | - Jana Falkenhagen
- Federal Institute for Materials Research and Testing (BAM), Richard-Willstaetter-Str. 11, D-12489 Berlin, Germany
| | - Ute Resch-Genger
- Federal Institute for Materials Research and Testing (BAM), Richard-Willstaetter-Str. 11, D-12489 Berlin, Germany
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24
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Margar SN, Sekar N. Red and near-infrared emitting bis-coumarin analogues based on curcumin framework-synthesis and photophysical studies. J Photochem Photobiol A Chem 2016. [DOI: 10.1016/j.jphotochem.2016.05.009] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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25
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Grabolle M, Starke M, Resch-Genger U. Highly Fluorescent dye-nanoclay Hybrid Materials Made from Different Dye Classes. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2016; 32:3506-13. [PMID: 27007448 DOI: 10.1021/acs.langmuir.5b04297] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
Nanoclays like laponites, which are commercially avaible in large quantities for a very moderate price, provide a facile solubilization strategy for hydrophobic dyes without the need for chemical functionalization and can act as a carrier for a high number of dye molecules. This does not require reactive dyes, amplifies fluorescence signals from individual emitters due to the high number of dyes molecules per laponite disk, and renders hydrophobic emitters applicable in aqueous environments. Aiming at the rational design of bright dye-loaded nanoclays as a new class of fluorescent reporters for bioanalysis and material sciences and the identification of dye structure-property relationships, we screened a series of commercial fluorescent dyes, differing in dye class, charge, and character of the optical transitions involved, and studied the changes of their optical properties caused by clay adsorption at different dye loading concentrations. Upon the basis of our dye loading density-dependent absorption and fluorescence measurements with S2105 and Lumogen F Yellow 083, we could identify two promising dye-nanoclay hybrid materials that reveal high fluorescence quantum yields of the nanoclay-adsorbed dyes of at least 0.20 and low dye self-quenching even at high dye-loading densities of up to 50 dye molecules per laponite platelet.
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Affiliation(s)
- Markus Grabolle
- Federal Institute for Materials Research and Testing (BAM) , Richard-Willstaetter-Strasse 11, 12489 Berlin, Germany
| | - Marian Starke
- Physical Chemistry, Freie Universität Berlin , Takustrasse 3, 14195 Berlin, Germany
| | - Ute Resch-Genger
- Federal Institute for Materials Research and Testing (BAM) , Richard-Willstaetter-Strasse 11, 12489 Berlin, Germany
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26
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Quevedo PD, Behnke T, Resch-Genger U. Streptavidin conjugation and quantification-a method evaluation for nanoparticles. Anal Bioanal Chem 2016; 408:4133-49. [PMID: 27038055 DOI: 10.1007/s00216-016-9510-3] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2015] [Revised: 03/19/2016] [Accepted: 03/21/2016] [Indexed: 12/17/2022]
Abstract
Aiming at the development of validated protocols for protein conjugation of nanomaterials and the determination of protein labeling densities, we systematically assessed the conjugation of the model protein streptavidin (SAv) to 100-, 500-, and 1000-nm-sized polystyrene and silica nanoparticles and dye-encoded polymer particles with two established conjugation chemistries, based upon achievable coupling efficiencies and labeling densities. Bioconjugation reactions compared included EDC/sulfo NHS ester chemistry for direct binding of the SAv to carboxyl groups at the particle surface and maleimide-thiol chemistry in conjunction with heterobifunctional PEG linkers and aminated nanoparticles (NPs). Quantification of the total and functional amounts of SAv on these nanomaterials and unreacted SAv in solution was performed with the BCA assay and the biotin-FITC (BF) titration, relying on different signal generation principles, which are thus prone to different interferences. Our results revealed a clear influence of the conjugation chemistry on the amount of NP crosslinking, yet under optimized reaction conditions, EDC/sulfo NHS ester chemistry and the attachment via heterobifunctional PEG linkers led to comparably efficient SAv coupling and good labeling densities. Particle size can obviously affect protein labeling densities and particularly protein functionality, especially for larger particles. For unstained nanoparticles, direct bioconjugation seems to be the most efficient strategy, whereas for dye-encoded nanoparticles, PEG linkers are to be favored for the prevention of dye-protein interactions which can affect protein functionality specifically in the case of direct SAv binding. Moreover, an influence of particle size on achievable protein labeling densities and protein functionality could be demonstrated.
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Affiliation(s)
- Pablo Darío Quevedo
- Department 1, Division Biophotonics, Federal Institute for Materials Research and Testing (BAM), Richard Willstaetter Strasse 11, 12489, Berlin, Germany
| | - Thomas Behnke
- Department 1, Division Biophotonics, Federal Institute for Materials Research and Testing (BAM), Richard Willstaetter Strasse 11, 12489, Berlin, Germany
| | - Ute Resch-Genger
- Department 1, Division Biophotonics, Federal Institute for Materials Research and Testing (BAM), Richard Willstaetter Strasse 11, 12489, Berlin, Germany.
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27
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Markus MA, Napp J, Behnke T, Mitkovski M, Monecke S, Dullin C, Kilfeather S, Dressel R, Resch-Genger U, Alves F. Tracking of Inhaled Near-Infrared Fluorescent Nanoparticles in Lungs of SKH-1 Mice with Allergic Airway Inflammation. ACS NANO 2015; 9:11642-11657. [PMID: 26513457 DOI: 10.1021/acsnano.5b04026] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Molecular imaging of inflammatory lung diseases, such as asthma, has been limited to date. The recruitment of innate immune cells to the airways is central to the inflammation process. This study exploits these cells for imaging purposes within the lung, using inhaled polystyrene nanoparticles loaded with the near-infrared fluorescence dye Itrybe (Itrybe-NPs). By means of in vivo and ex vivo fluorescence reflectance imaging of an ovalbumin-based allergic airway inflammation (AAI) model in hairless SKH-1 mice, we show that subsequent to intranasal application of Itrybe-NPs, AAI lungs display fluorescence intensities significantly higher than those in lungs of control mice for at least 24 h. Ex vivo immunofluorescence analysis of lung tissue demonstrates the uptake of Itrybe-NPs predominantly by CD68(+)CD11c(+)ECF-L(+)MHCII(low) cells, identifying them as alveolar M2 macrophages in the peribronchial and alveolar areas. The in vivo results were validated by confocal microscopy, overlapping tile analysis, and flow cytometry, showing an amount of Itrybe-NP-containing macrophages in lungs of AAI mice significantly larger than that in controls. A small percentage of NP-containing cells were identified as dendritic cells. Flow cytometry of tracheobronchial lymph nodes showed that Itrybe-NPs were negligible in lung draining lymph nodes 24 h after inhalation. This imaging approach may advance preclinical monitoring of AAI in vivo over time and aid the investigation of the role that macrophages play during lung inflammation. Furthermore, it allows for tracking of inhaled nanoparticles and can hence be utilized for studies of the fate of potential new nanotherapeutics.
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Affiliation(s)
| | | | - Thomas Behnke
- Biophotonics Division, BAM Federal Institute for Materials Research and Testing , 12205 Berlin, Germany
| | | | | | | | | | | | - Ute Resch-Genger
- Biophotonics Division, BAM Federal Institute for Materials Research and Testing , 12205 Berlin, Germany
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Tathe AB, Sekar N. NLOphoric Red Emitting Bis Coumarins with O-BF2-O core - Synthesis, Photophysical Properties and DFT Studies. J Fluoresc 2015; 26:471-86. [DOI: 10.1007/s10895-015-1733-8] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2015] [Accepted: 11/26/2015] [Indexed: 02/02/2023]
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Chen J, Zhang T, Wang S, Hu R, Li S, Ma JS, Yang G. Intramolecular aggregation and optical limiting properties of triazine-linked mono-, bis- and tris-phthalocyanines. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2015; 149:426-433. [PMID: 25974676 DOI: 10.1016/j.saa.2015.04.093] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/11/2014] [Revised: 03/18/2015] [Accepted: 04/20/2015] [Indexed: 06/04/2023]
Abstract
A series of triazine-linked mono-, bis- and tris-phthalocyanines are synthesized, intramolecular aggregation is found in bis- and tris-phthalocyanines via π-π stacking interaction. Theoretical and experimental studies reveal the formation of the intramolecular aggregation. The spectrographic, photophysical and nonlinear optical properties of these compounds are adjusted for the formation of the intramolecular aggregation. The bis-phthalocyanine dimer presents smaller fluorescence quantum yield, lower triplet formation yield and the triplet-minus-ground state extinction coefficient, which causes poorer optical limiting performance. It is interesting that the tris-phthalocyanine is composed of a mono-phthalocyanine part and a bis-phthalocyanine part, the optical limiting property of the tris-phthalocyanine is similar to that of mono-phthalocyanine.
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Affiliation(s)
- Jun Chen
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, PR China; School of Materials Science and Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, PR China.
| | - Tao Zhang
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, PR China
| | - Shuangqing Wang
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, PR China.
| | - Rui Hu
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, PR China
| | - Shayu Li
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, PR China
| | - Jin Shi Ma
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, PR China
| | - Guoqiang Yang
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, PR China.
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Moser M, Behnke T, Hamers-Allin C, Klein-Hartwig K, Falkenhagen J, Resch-Genger U. Quantification of PEG-Maleimide Ligands and Coupling Efficiencies on Nanoparticles with Ellman’s Reagent. Anal Chem 2015; 87:9376-83. [DOI: 10.1021/acs.analchem.5b02173] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Marko Moser
- BAM Federal Institute for Materials Research and Testing, Richard-Willstaetter-Strasse 11, D-12489 Berlin, Germany
| | - Thomas Behnke
- BAM Federal Institute for Materials Research and Testing, Richard-Willstaetter-Strasse 11, D-12489 Berlin, Germany
| | - Carolina Hamers-Allin
- BAM Federal Institute for Materials Research and Testing, Richard-Willstaetter-Strasse 11, D-12489 Berlin, Germany
| | - Karin Klein-Hartwig
- BAM Federal Institute for Materials Research and Testing, Richard-Willstaetter-Strasse 11, D-12489 Berlin, Germany
| | - Jana Falkenhagen
- BAM Federal Institute for Materials Research and Testing, Richard-Willstaetter-Strasse 11, D-12489 Berlin, Germany
| | - Ute Resch-Genger
- BAM Federal Institute for Materials Research and Testing, Richard-Willstaetter-Strasse 11, D-12489 Berlin, Germany
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Abstract
Soft fluorescent nanomaterials have attracted recent attention as imaging agents for biological applications, because they provide the advantages of good biocompatibility, high brightness, and easy biofunctionalization. Here, we provide a survey of recent developments in fluorescent soft nano-sized biological imaging agents. Various soft fluorescent nanoparticles (NPs) (including dye-doped polymer NPs, semiconducting polymer NPs, small-molecule organic NPs, nanogels, micelles, vesicles, and biomaterial-based NPs) are summarized from the perspectives of preparation methods, structure, optical properties, and surface functionalization. Based on both optical and functional properties of the nano-sized imaging agents, their applications are then reviewed in terms of in vitro imaging, in vivo imaging, and cellular-process imaging, by means of specific or nonspecific targeting.
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Affiliation(s)
- Hong-Shang Peng
- Department of Chemistry, University of Washington, Seattle, WA, USA.
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Red Emitting Coumarins: Insights of Photophysical Properties with DFT Methods. J Fluoresc 2015; 25:1117-26. [DOI: 10.1007/s10895-015-1602-5] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2015] [Accepted: 06/15/2015] [Indexed: 12/26/2022]
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Hatami S, Würth C, Kaiser M, Leubner S, Gabriel S, Bahrig L, Lesnyak V, Pauli J, Gaponik N, Eychmüller A, Resch-Genger U. Absolute photoluminescence quantum yields of IR26 and IR-emissive Cd(1-x)Hg(x)Te and PbS quantum dots--method- and material-inherent challenges. NANOSCALE 2015; 7:133-143. [PMID: 25407424 DOI: 10.1039/c4nr04608k] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Bright emitters with photoluminescence in the spectral region of 800-1600 nm are increasingly important as optical reporters for molecular imaging, sensing, and telecommunication and as active components in electrooptical and photovoltaic devices. Their rational design is directly linked to suitable methods for the characterization of their signal-relevant properties, especially their photoluminescence quantum yield (Φ(f)). Aiming at the development of bright semiconductor nanocrystals with emission >1000 nm, we designed a new NIR/IR integrating sphere setup for the wavelength region of 600-1600 nm. We assessed the performance of this setup by acquiring the corrected emission spectra and Φ(f) of the organic dyes Itrybe, IR140, and IR26 and several infrared (IR)-emissive Cd(1-x)Hg(x)Te and PbS semiconductor nanocrystals and comparing them to data obtained with two independently calibrated fluorescence instruments absolutely or relative to previously evaluated reference dyes. Our results highlight special challenges of photoluminescence studies in the IR ranging from solvent absorption to the lack of spectral and intensity standards together with quantum dot-specific challenges like photobrightening and photodarkening and the size-dependent air stability and photostability of differently sized oleate-capped PbS colloids. These effects can be representative of lead chalcogenides. Moreover, we redetermined the Φ(f) of IR26, the most frequently used IR reference dye, to 1.1 × 10(-3) in 1,2-dichloroethane DCE with a thorough sample reabsorption and solvent absorption correction. Our results indicate the need for a critical reevaluation of Φ(f) values of IR-emissive nanomaterials and offer guidelines for improved Φ(f) measurements.
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Affiliation(s)
- Soheil Hatami
- BAM Federal Institute for Materials Research and Testing, Richard-Willstaetter-Str. 11, 12489 Berlin, Germany.
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Sun Z, Song X, Li X, Su T, Qi S, Qiao R, Wang F, Huan Y, Yang W, Wang J, Nie Y, Wu K, Gao M, Cao F. In vivo multimodality imaging of miRNA-16 iron nanoparticle reversing drug resistance to chemotherapy in a mouse gastric cancer model. NANOSCALE 2014; 6:14343-14353. [PMID: 25327162 DOI: 10.1039/c4nr03003f] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
miRNA-16 (miR16) plays an important role in modulating the drug resistance of SGC7901 cell lines to adriamycin (ADR). A variety of viral carriers have been designed for miRNA delivery. However, the safety concerns are currently perceived as hampering the clinical application of viral vector-based therapy. Herein a type of magnetic nanoparticles (MNPs) was designed and synthesized using poly(ethylene glycol) (PEG)-coated Fe₃O₄ nanoparticles as a miRNA delivery system for the purpose of reducing drug resistance of gastric cancer cells by enforcing miR16 expression in SGC7901/ADR cells. The MNPs with good biocompatibility were synthesized by thermal decomposition, and then conjugated with miRNA via electrostatic interaction producing miR16/MNPs. After co-culture with miR16/MNPs, ADR-induced apoptosis of SGC7901/ADR was examined by MTT and TUNEL. miR16/MNPs treatment significantly increased cell apoptosis in vitro. SGC7901/ADR(fluc) tumor-bearing nude mice under ADR therapy were treated with miR16/MNPs by tail vein injection for in vivo study. After intraperitoneal injection of ADR, tumor volume measurement and fluorescence imaging were performed to for the death of SGC7901/ADR cells in vivo. Results showed that miR16/MNPs were able to significantly suppress SGC7901/ADR tumor growth, probably through increasing SGC7901/ADR cells' sensitivity to ADR. Our results suggest the efficient delivery of miR16 by MNPs as a novel therapeutic strategy for drug resistant tumor treatment.
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Affiliation(s)
- Zhongchan Sun
- Department of Cardiology, Chinese PLA General Hospital, Beijing, 100853, China.
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Würth C, Geißler D, Behnke T, Kaiser M, Resch-Genger U. Critical review of the determination of photoluminescence quantum yields of luminescent reporters. Anal Bioanal Chem 2014; 407:59-78. [DOI: 10.1007/s00216-014-8130-z] [Citation(s) in RCA: 54] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2014] [Revised: 08/15/2014] [Accepted: 08/22/2014] [Indexed: 12/13/2022]
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Advances in imaging probes and optical microendoscopic imaging techniques for early in vivo cancer assessment. Adv Drug Deliv Rev 2014; 74:53-74. [PMID: 24120351 DOI: 10.1016/j.addr.2013.09.012] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2013] [Revised: 09/18/2013] [Accepted: 09/27/2013] [Indexed: 12/12/2022]
Abstract
A new chapter in the history of medical diagnosis happened when the first X-ray technology was invented in the late 1800s. Since then, many non-invasive and minimally invasive imaging techniques have been invented for clinical diagnosis to research in cellular biology, drug discovery, and disease monitoring. These imaging modalities have leveraged the benefits of significant advances in computer, electronics, and information technology and, more recently, targeted molecular imaging. The development of targeted contrast agents such as fluorescent and nanoparticle probes coupled with optical imaging techniques has made it possible to selectively view specific biological events and processes in both in vivo and ex vivo systems with great sensitivity and selectivity. Thus, the combination of targeted molecular imaging probes and optical imaging techniques have become a mainstay in modern medicinal and biological research. Many promising results have demonstrated great potentials to translate to clinical applications. In this review, we describe a discussion of employing imaging probes and optical microendoscopic imaging techniques for cancer diagnosis.
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Yi X, Wang F, Qin W, Yang X, Yuan J. Near-infrared fluorescent probes in cancer imaging and therapy: an emerging field. Int J Nanomedicine 2014; 9:1347-65. [PMID: 24648733 PMCID: PMC3956734 DOI: 10.2147/ijn.s60206] [Citation(s) in RCA: 153] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Near-infrared fluorescence (NIRF) imaging is an attractive modality for early cancer detection with high sensitivity and multi-detection capability. Due to convenient modification by conjugating with moieties of interests, NIRF probes are ideal candidates for cancer targeted imaging. Additionally, the combinatory application of NIRF imaging and other imaging modalities that can delineate anatomical structures extends fluorometric determination of biomedical information. Moreover, nanoparticles loaded with NIRF dyes and anticancer agents contribute to the synergistic management of cancer, which integrates the advantage of imaging and therapeutic functions to achieve the ultimate goal of simultaneous diagnosis and treatment. Appropriate probe design with targeting moieties can retain the original properties of NIRF and pharmacokinetics. In recent years, great efforts have been made to develop new NIRF probes with better photostability and strong fluorescence emission, leading to the discovery of numerous novel NIRF probes with fine photophysical properties. Some of these probes exhibit tumoricidal activities upon light radiation, which holds great promise in photothermal therapy, photodynamic therapy, and photoimmunotherapy. This review aims to provide a timely and concise update on emerging NIRF dyes and multifunctional agents. Their potential uses as agents for cancer specific imaging, lymph node mapping, and therapeutics are included. Recent advances of NIRF dyes in clinical use are also summarized.
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Affiliation(s)
- Xiaomin Yi
- Department of Urology, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi, People's Republic of China
| | - Fuli Wang
- Department of Urology, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi, People's Republic of China
| | - Weijun Qin
- Department of Urology, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi, People's Republic of China
| | - Xiaojian Yang
- Department of Urology, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi, People's Republic of China
| | - Jianlin Yuan
- Department of Urology, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi, People's Republic of China
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Nanoparticle-encapsulated vis- and NIR-emissive fluorophores with different fluorescence decay kinetics for lifetime multiplexing. Anal Bioanal Chem 2014; 406:3315-22. [DOI: 10.1007/s00216-013-7597-3] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2013] [Revised: 12/16/2013] [Accepted: 12/21/2013] [Indexed: 01/30/2023]
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Seo S, Pascal S, Park C, Shin K, Yang X, Maury O, Sarwade BD, Andraud C, Kim E. NIR electrochemical fluorescence switching from polymethine dyes. Chem Sci 2014. [DOI: 10.1039/c3sc53161a] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Reversible electrochemical fluorescence switching in the NIR region is achieved by the reversible redox reaction of an NIR emissive polymethine dye.
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Affiliation(s)
- Seogjae Seo
- Department of Chemical and Biomolecular Engineering
- Yonsei University
- Seoul 120-749, Korea
| | - Simon Pascal
- Ecole Normale Supérieure de Lyon
- University of Lyon
- 69007 Lyon, France
| | - Chihyun Park
- Department of Chemical and Biomolecular Engineering
- Yonsei University
- Seoul 120-749, Korea
| | - Kyoungsoon Shin
- Department of Chemical and Biomolecular Engineering
- Yonsei University
- Seoul 120-749, Korea
| | - Xu Yang
- Department of Chemical and Biomolecular Engineering
- Yonsei University
- Seoul 120-749, Korea
| | - Olivier Maury
- Ecole Normale Supérieure de Lyon
- University of Lyon
- 69007 Lyon, France
| | - Bhimrao D. Sarwade
- Department of Chemical and Biomolecular Engineering
- Yonsei University
- Seoul 120-749, Korea
| | - Chantal Andraud
- Ecole Normale Supérieure de Lyon
- University of Lyon
- 69007 Lyon, France
| | - Eunkyoung Kim
- Department of Chemical and Biomolecular Engineering
- Yonsei University
- Seoul 120-749, Korea
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Mahfoud OK, Rakovich TY, Prina-Mello A, Movia D, Alves F, Volkov Y. Detection of ErbB2: nanotechnological solutions for clinical diagnostics. RSC Adv 2014. [DOI: 10.1039/c3ra45401k] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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Zheng SG, Xu HX, Chen HR. Nano/microparticles and ultrasound contrast agents. World J Radiol 2013; 5:468-471. [PMID: 24379933 PMCID: PMC3874503 DOI: 10.4329/wjr.v5.i12.468] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/17/2013] [Revised: 09/22/2013] [Accepted: 11/16/2013] [Indexed: 02/06/2023] Open
Abstract
Microbubbles have been used for many years now in clinical practice as contrast agents in ultrasound imaging. Recently, their therapeutic applications have also attracted more attention. However, the short circulation time (minutes) and relatively large size (two to ten micrometers) of currently used commercial microbubbles do not allow effective extravasation into tumor tissue, preventing efficient tumor targeting. Fortunately, more multifunctional and theranostic nanoparticles with some special advantages over the traditional microbubbles have been widely investigated and explored for biomedical applications. The way to synthesize an ideal ultrasound contrast agent based on nanoparticles in order to achieve an expected effect on contrast imaging is a key technique. Currently a number of nanomaterials, including liposomes, polymers, micelles, dendrimers, emulsions, quantum dots, solid nanoparticles etc., have already been applied to pre or clinical trials. Multifunctional and theranostic nanoparticles with some special advantages, such as the tumor-targeted (passive or active), multi-mode contrast agents (magnetic resonance imaging, ultrasonography or fluorescence), carrier or enhancer of drug delivery, and combined chemo or thermal therapy etc., are rapidly gaining popularity and have shown a promising application in the field of cancer treatment. In this mini review, the trends and the advances of multifunctional and theranostic nanoparticles are briefly discussed.
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Hoffmann K, Behnke T, Drescher D, Kneipp J, Resch-Genger U. Near-infrared-emitting nanoparticles for lifetime-based multiplexed analysis and imaging of living cells. ACS NANO 2013; 7:6674-6684. [PMID: 23837453 DOI: 10.1021/nn4029458] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
The increase in information content from bioassays and bioimaging requires robust and efficient strategies for the detection of multiple analytes or targets in a single measurement, thereby addressing current health and security concerns. For fluorescence techniques, an attractive alternative to commonly performed spectral or color multiplexing presents lifetime multiplexing and the discrimination between different fluorophores based on their fluorescence decay kinetics. This strategy relies on fluorescent labels with sufficiently different lifetimes that are excitable at the same wavelength and detectable within the same spectral window. Here, we report on lifetime multiplexing and discrimination with a set of nanometer-sized particles loaded with near-infrared emissive organic fluorophores chosen to display very similar absorption and emission spectra, yet different fluorescence decay kinetics in suspension. Furthermore, as a first proof-of-concept, we describe bioimaging studies with 3T3 fibroblasts and J774 macrophages, incubated with mixtures of these reporters employing fluorescence lifetime imaging microscopy. These proof-of-concept measurements underline the potential of fluorescent nanoparticle reporters in fluorescence lifetime multiplexing, barcoding, and imaging for cellular studies, cell-based assays, and molecular imaging.
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Affiliation(s)
- Katrin Hoffmann
- BAM Federal Institute for Materials Research and Testing, Richard-Willstaetter-Straße 11, 12489 Berlin, Germany
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Zhang LZ, Zhang YJ, Wu W, Jiang XQ. Doxorubicin-loaded boron-rich polymer nanoparticles for orthotopically implanted liver tumor treatment. CHINESE JOURNAL OF POLYMER SCIENCE 2013. [DOI: 10.1007/s10118-013-1267-y] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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Liu S, Shi F, Zhao X, Chen L, Su X. 3-Aminophenyl boronic acid-functionalized CuInS2 quantum dots as a near-infrared fluorescence probe for the determination of dopamine. Biosens Bioelectron 2013; 47:379-84. [PMID: 23608539 DOI: 10.1016/j.bios.2013.03.055] [Citation(s) in RCA: 95] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2013] [Revised: 03/01/2013] [Accepted: 03/14/2013] [Indexed: 01/15/2023]
Abstract
Water-soluble CuInS2 ternary quantum dots (QDs) capped by mercaptopropionic acid were directly synthesized in aqueous solution. Consequently, the CuInS2 QDs were covalently linked to 3-aminophenyl boronic acid molecules to form the 3-aminophenyl boronic acid-functionalized CuInS2 QDs (F-CuInS2 QDs). The F-CuInS2 QDs had a fairly symmetric fluorescence emission centered at 736nm that was in the near-infrared region (NIR). The F-CuInS2 QDs containing boronic acid functional groups were reactive toward vicinal diols to form five- or six-member cyclic esters in an alkaline aqueous solution. The reaction would cause the fluorescence quenching, which could be used as a fluorescence probe for the determination of dopamine (DA). This assay could also probe other vicinal diols such as catechol, pyrogallol, and gallate, based on the fluorescence quenching of the F-CuInS2 QDs, and this assay was nearly unaffected by other phenol compounds such as phenol, resorcinol, and hydroquinone without the vicinal diol structures. The developed F-CuInS2 QDs were applied to the detection of DA in human serum samples with satisfactory results. Therefore, this experment provided a simple and sensitve NIR fluorescence probe for the detection of DA, catechol, pyrogallol, and gallate.
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Affiliation(s)
- Siyu Liu
- Department of Analytical Chemistry, College of Chemistry, Jilin University, Changchun, 130012, China
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