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Andreeva VD, Ehlers H, R C AK, Presselt M, J van den Broek L, Bonnet S. Combining nitric oxide and calcium sensing for the detection of endothelial dysfunction. Commun Chem 2023; 6:179. [PMID: 37644120 PMCID: PMC10465535 DOI: 10.1038/s42004-023-00973-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2023] [Accepted: 08/01/2023] [Indexed: 08/31/2023] Open
Abstract
Cardiovascular diseases are the leading cause of death worldwide and are not typically diagnosed until the disease has manifested. Endothelial dysfunction is an early, reversible precursor in the irreversible development of cardiovascular diseases and is characterized by a decrease in nitric oxide production. We believe that more reliable and reproducible methods are necessary for the detection of endothelial dysfunction. Both nitric oxide and calcium play important roles in the endothelial function. Here we review different types of molecular sensors used in biological settings. Next, we review the current nitric oxide and calcium sensors available. Finally, we review methods for using both sensors for the detection of endothelial dysfunction.
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Affiliation(s)
| | - Haley Ehlers
- Mimetas B.V., De limes 7, 2342 DH, Oegstgeest, The Netherlands
- Leiden Academic Centre for Drug Research, Leiden University, Leiden, The Netherlands
| | - Aswin Krishna R C
- Leiden Institute of Chemistry, Leiden University, Leiden, The Netherlands
| | - Martin Presselt
- Leibniz Institute of Photonic Technology (Leibniz-IPHT), Albert-Einstein-Str. 9, 07745, Jena, Germany
- Sciclus GmbH & Co. KG, Moritz-von-Rohr-Str. 1a, 07745, Jena, Germany
| | | | - Sylvestre Bonnet
- Leiden Institute of Chemistry, Leiden University, Leiden, The Netherlands.
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2
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d-limonene-loaded liposomes target malignant glioma cells via the downregulation of angiogenic growth factors. J Drug Deliv Sci Technol 2023. [DOI: 10.1016/j.jddst.2023.104358] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/13/2023]
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3
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Srivastava P, Tavernaro I, Scholtz L, Genger C, Welker P, Schreiber F, Meyer K, Resch-Genger U. Dual color pH probes made from silica and polystyrene nanoparticles and their performance in cell studies. Sci Rep 2023; 13:1321. [PMID: 36693888 PMCID: PMC9873940 DOI: 10.1038/s41598-023-28203-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2022] [Accepted: 01/13/2023] [Indexed: 01/25/2023] Open
Abstract
Ratiometric green-red fluorescent nanosensors for fluorometrically monitoring pH in the acidic range were designed from 80 nm-sized polystyrene (PS) and silica (SiO2) nanoparticles (NPs), red emissive reference dyes, and a green emissive naphthalimide pH probe, analytically and spectroscopically characterized, and compared regarding their sensing performance in aqueous dispersion and in cellular uptake studies. Preparation of these optical probes, which are excitable by 405 nm laser or LED light sources, involved the encapsulation of the pH-inert red-fluorescent dye Nile Red (NR) in the core of self-made carboxylated PSNPs by a simple swelling procedure and the fabrication of rhodamine B (RhB)-stained SiO2-NPs from a silane derivative of pH-insensitive RhB. Subsequently, the custom-made naphthalimide pH probe, that utilizes a protonation-controlled photoinduced electron transfer process, was covalently attached to the carboxylic acid groups at the surface of both types of NPs. Fluorescence microscopy studies with the molecular and nanoscale optical probes and A549 lung cancer cells confirmed the cellular uptake of all probes and their penetration into acidic cell compartments, i.e., the lysosomes, indicated by the switching ON of the green naphthalimide fluorescence. This underlines their suitability for intracellular pH sensing, with the SiO2-based nanosensor revealing the best performance regarding uptake speed and stability.
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Affiliation(s)
- Priyanka Srivastava
- Division Biophotonics, Federal Institute for Materials Research and Testing (BAM), Richard-Willstaetter-Str. 11, 12489, Berlin, Germany
| | - Isabella Tavernaro
- Division Biophotonics, Federal Institute for Materials Research and Testing (BAM), Richard-Willstaetter-Str. 11, 12489, Berlin, Germany
| | - Lena Scholtz
- Division Biophotonics, Federal Institute for Materials Research and Testing (BAM), Richard-Willstaetter-Str. 11, 12489, Berlin, Germany.,Institut für Chemie und Biochemie, Freie Universität Berlin, Takustr. 3, 14195, Berlin, Germany
| | - Claudia Genger
- nanoPET Pharma GmbH, Robert-Koch-Platz 4, 10115, Berlin, Germany.,Charité-Universitätsmedizin Berlin, Charitéplatz 1, 10117, Berlin, Germany
| | - Pia Welker
- nanoPET Pharma GmbH, Robert-Koch-Platz 4, 10115, Berlin, Germany.,Charité-Universitätsmedizin Berlin, Charitéplatz 1, 10117, Berlin, Germany
| | - Frank Schreiber
- Division Biodeterioration and Reference Organisms, Federal Institute for Materials Research and Testing (BAM), Unter den Eichen 87, 12205, Berlin, Germany
| | - Klas Meyer
- Division Process Analytical Technology, Federal Institute for Materials Research and Testing (BAM), Richard-Willstaetter-Str. 11, 12489, Berlin, Germany
| | - Ute Resch-Genger
- Division Biophotonics, Federal Institute for Materials Research and Testing (BAM), Richard-Willstaetter-Str. 11, 12489, Berlin, Germany.
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Ávila-Sánchez MA, Isaac-Olivé K, Aranda-Lara L, Morales-Ávila E, Plata-Becerril A, Jiménez-Mancilla NP, Ocampo-García B, Estrada JA, Santos-Cuevas CL, Torres-García E, Camacho-López MA. Targeted photodynamic therapy using reconstituted high-density lipoproteins as rhodamine transporters. Photodiagnosis Photodyn Ther 2021; 37:102630. [PMID: 34798347 DOI: 10.1016/j.pdpdt.2021.102630] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2021] [Revised: 10/09/2021] [Accepted: 11/12/2021] [Indexed: 01/10/2023]
Abstract
Reconstituted high-density lipoprotein (rHDL) nanoparticles are excellent transporters of molecules and very useful for targeted therapy as they specifically recognize the scavenger receptor, class B1 (SR-B1) that is present on the surface of a wide range of tumor cells. However, they have rarely been employed to transport photosensitizers (PS) for photodynamic therapy (PDT). Rhodamine (R) compounds have been dismissed as useful PSs for PDT due to their low 1O2 production, excitation wavelengths with little tissue penetration, and poor selectivity for tumor cells. It was recently demonstrated that when irradiating at 532 nm or with Cerenkov radiation (CR) from a β-emitting radionuclide, R123, R6G, and RB undergo electron transfer reactions (type I reaction) with folic acid. R6G also produces type I reactions with O2. In this work, the photodynamic effects of the rHDL-R system were evaluated in vitro. rHDL nanoparticles loaded with R123, R6G, and RB were synthesized, and the PS was internalized into T47D tumor cells. When cells were irradiated with a 532-nm laser in the presence of an rHDL-R systems, a cytotoxic photodynamic effect was obtained in the order R6G > R123 > RB. In the presence of CR from a 177Lu source, cytotoxicity showed the order R6G > RB > R123. The higher cytotoxicity induced by R6G in both cases corresponds to higher cellular internalization and larger production of type I and II reactions. Thus, in this work, it is proposed that rHDL-R/177Lu system can be applied in theragnostics as a multimodal radiotherapy-PDT-imaging system (imaging by SPECT or Cerenkov) and in hypoxic solid tumors in which external radiation is not effective and 177Lu-CR acts as light source.
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Affiliation(s)
- Marcela A Ávila-Sánchez
- Laboratorio de Investigación en Teranóstica, Facultad de Medicina, Universidad Autónoma del Estado de México, Toluca, Estado de México 50180, Mexico
| | - Keila Isaac-Olivé
- Laboratorio de Investigación en Teranóstica, Facultad de Medicina, Universidad Autónoma del Estado de México, Toluca, Estado de México 50180, Mexico.
| | - Liliana Aranda-Lara
- Laboratorio de Investigación en Teranóstica, Facultad de Medicina, Universidad Autónoma del Estado de México, Toluca, Estado de México 50180, Mexico.
| | - Enrique Morales-Ávila
- Laboratorio de Toxicología y Farmacia, Facultad de Química, Universidad Autónoma del Estado de México, Toluca, Estado de México 50120, Mexico
| | - Adriana Plata-Becerril
- Laboratorio de Toxicología y Farmacia, Facultad de Química, Universidad Autónoma del Estado de México, Toluca, Estado de México 50120, Mexico
| | - Nallely P Jiménez-Mancilla
- Laboratorio Nacional de Investigación y Desarrollo de Radiofármacos-CONACyT, Instituto Nacional de Investigaciones Nucleares, Ocoyoacac, Estado de México 52750, Mexico.
| | - Blanca Ocampo-García
- Laboratorio Nacional de Investigación y Desarrollo de Radiofármacos-CONACyT, Instituto Nacional de Investigaciones Nucleares, Ocoyoacac, Estado de México 52750, Mexico
| | - José A Estrada
- Laboratorio de Neuroquímica, Facultad de Medicina, Universidad Autónoma del Estado de México, Toluca, Estado de México 50180, Mexico
| | - Clara L Santos-Cuevas
- Laboratorio Nacional de Investigación y Desarrollo de Radiofármacos-CONACyT, Instituto Nacional de Investigaciones Nucleares, Ocoyoacac, Estado de México 52750, Mexico
| | - Eugenio Torres-García
- Laboratorio de Dosimetría y Simulación Monte Carlo, Facultad de Medicina, Universidad Autónoma del Estado de México, Toluca, Estado de México 50180, Mexico
| | - Miguel A Camacho-López
- Laboratorio de Fotomedicina, Biofotónica y Espectroscopía Láser de Pulsos Ultracortos, Facultad de Medicina, Universidad Autónoma del Estado de México, Toluca, Estado de México 50180, Mexico
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5
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Insight into Fluorescence Imaging and Bioorthogonal Reactions in Biological Analysis. Top Curr Chem (Cham) 2021; 379:10. [DOI: 10.1007/s41061-020-00323-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2020] [Accepted: 12/22/2020] [Indexed: 02/07/2023]
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6
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Li B, Sun Y, Lu J, Peng X. Investigation on the binding interaction of rhodamine B with human serum albumin: effect of metal ions. JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH. PART. B, PESTICIDES, FOOD CONTAMINANTS, AND AGRICULTURAL WASTES 2021; 56:259-271. [PMID: 33459173 DOI: 10.1080/03601234.2021.1873030] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
The binding of rhodamine B (RB) to human serum albumin (HSA) in the absence and presence of Cu2+ or Fe3+ under simulated physiological conditions was studied by using various biophysical methods for the first time. The results showed that the interaction between HSA and RB could spontaneously result in the formation of HSA-RB complex (namely, static quenching mechanism) through hydrophobic interactions and hydrogen bonds irrespective of the absence or presence of metal ions. The presence of metal ions led to the reduction of binding affinity of RB to HSA compared with no metal ions, which might result from the conformational change of HSA caused by the binding of metal ions. Furthermore, the analysis of UV-vis absorption, circular dichroism, synchronous fluorescence and three-dimensional fluorescence experiments demonstrated that the addition of RB induced conformational and microenvironmental changes of HSA without and with metal ions. In short, this work will be helpful to in-depth understand the transport mechanism and biological effect of RB and the effect of metal ions on the interaction of HSA-RB in vivo.
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Affiliation(s)
- Baicun Li
- College of Life Science and Food Engineering, Shaanxi Xueqian Normal University, Xi'an, Shaanxi, People's Republic of China
| | - Yinhe Sun
- Tianjin Institute of Metrological Supervision and Testing, Tianjin, People's Republic of China
| | - Jing Lu
- Xi'an Modern Chemistry Research Institute, Xi'an, Shaanxi, People's Republic of China
| | - Xin Peng
- School of Life Sciences, Tianjin Key Laboratory of Function and Application of Biological Macromolecular Structures, Tianjin University, Tianjin, People's Republic of China
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7
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8
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Liang L, Cheng L, Zhang Y, Wang Q, Wu Q, Xue Y, Meng X. Efficiency and mechanisms of rhodamine B degradation in Fenton-like systems based on zero-valent iron. RSC Adv 2020; 10:28509-28515. [PMID: 35520040 PMCID: PMC9055829 DOI: 10.1039/d0ra03125a] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2020] [Accepted: 07/17/2020] [Indexed: 11/21/2022] Open
Abstract
Based on the Fe0/H2O2 heterogeneous Fenton system, the degradation of rhodamine B (RhB, an organic dye pollutant) was researched in this paper. The effects of initial pH value, concentration of H2O2, dosage of zero-valent iron (ZVI), and initial RhB concentration on RhB degradation by Fe0/H2O2 were studied. The results showed that when the initial pH = 4, dosage of ZVI was 9 mM, and concentrations of H2O2 and RhB were 8 mM and 0.1 mM, respectively, the color of RhB could be completely faded within 30 min, and the total organic carbon (TOC) removal percentage was about 63% after 120 min. The dissolved oxygen (DO) content and oxidation-reduction potential (ORP) were monitored during the reaction. Quenching experiments with methanol confirmed that the degradation of the dye was mainly due to oxidation by the ˙OH radical. Besides, the results from UV-Vis spectroscopy showed that the degradation of RhB was mainly due to the destruction of the conjugated oxygen hetero-anthracene in the RhB molecule. The solid-phase characterization of the ZVI samples after reaction confirmed that the original regular and slippery ZVI samples finally were corroded into rough and irregular lepidocrocite and magnetite. Two possible competitive reaction pathways for the degradation of RhB by Fe0/H2O2 were proposed by GC-MS analysis, which were attributed to the dissociation of ethyl radicals and the degradation of chromophore radicals.
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Affiliation(s)
- Liping Liang
- School of Civil Engineering, Shaoxing University Shaoxing 312000 P. R. China
- College of Life Science, Shaoxing University Shaoxing 312000 P. R. China
| | - Liubiao Cheng
- School of Civil Engineering, Shaoxing University Shaoxing 312000 P. R. China
| | - Yuting Zhang
- School of Civil Engineering, Shaoxing University Shaoxing 312000 P. R. China
| | - Qian Wang
- School of Civil Engineering, Shaoxing University Shaoxing 312000 P. R. China
| | - Qian Wu
- School of Civil Engineering, Shaoxing University Shaoxing 312000 P. R. China
| | - Yuanyuan Xue
- School of Civil Engineering, Shaoxing University Shaoxing 312000 P. R. China
| | - Xu Meng
- College of Textile and Garment, Shaoxing University Shaoxing 312000 P. R. China
- Key Laboratory of Clean Dyeing and Finishing Technology of Zhejiang Province, Shaoxing University Shaoxing 312000 China
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9
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Wu S, Guo H, Horng H, Liu Y, Li H, Daneshpajouhnejad P, Rosenberg A, Albanese C, Ranjit S, Andrews PM, Levi M, Tang Q, Chen Y. Morphological and functional characteristics of aging kidneys based on two-photon microscopy in vivo. JOURNAL OF BIOPHOTONICS 2020; 13:e201900246. [PMID: 31688977 DOI: 10.1002/jbio.201900246] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/02/2019] [Revised: 09/29/2019] [Accepted: 10/29/2019] [Indexed: 05/08/2023]
Abstract
Age-related kidney disease, which is chronic and naturally occurring, is a general term for a set of heterogeneous disorders affecting kidney structures and characterized by a decline in renal function. Age-related renal insufficiency has important implications with regard to body homeostasis, drug toxicity and renal transplantation. In our study, two-photon microscopy was used to image kidney morphological and functional characteristics in an age-related rat model in vivo. The changes in morphology are analyzed based on autofluorescence and Hoechst 33342 labeling in rats with different ages. Structural parameters including renal tubular diameter, cell nuclei density, size and shape are studied and compared with Hematoxylin and Eosin histological analysis. Functional characteristics, such as blood flow, and glomerular filtration rate are studied with high-molecular weight (MW) 500-kDa dextran-fluorescein and low-MW 10-kDa dextran-rhodamine. Results indicate that morphology changes significantly and functional characteristics deteriorate with age. These parameters are potential indicators for evaluating age-related renal morphology and function changes. Combined analyses of these parameters could provide a quantitative, novel method for monitoring kidney diseases and/or therapeutic effects of kidney drugs.
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Affiliation(s)
- Shulian Wu
- Fujian Provincial Key Laboratory of Photonic Technology, Key Laboratory of Optoelectronic Science and Technology for Medicine, College of Photonic and Electronic Engineering, Fujian Normal University, Ministry of Education, Fuzhou, China
- Fischell Department of Bioengineering, University of Maryland, College Park, Maryland
| | - Hengchang Guo
- Fischell Department of Bioengineering, University of Maryland, College Park, Maryland
| | - Hannah Horng
- Fischell Department of Bioengineering, University of Maryland, College Park, Maryland
| | - Yi Liu
- Fischell Department of Bioengineering, University of Maryland, College Park, Maryland
| | - Hui Li
- Fujian Provincial Key Laboratory of Photonic Technology, Key Laboratory of Optoelectronic Science and Technology for Medicine, College of Photonic and Electronic Engineering, Fujian Normal University, Ministry of Education, Fuzhou, China
| | | | - Avi Rosenberg
- Department of Pathology, Johns Hopkins Medical Institutions, Baltimore, Maryland
| | - Christopher Albanese
- Department of Biochemistry and Molecular & Cellular Biology, Georgetown University Medical Center, Washington, DC
| | - Suman Ranjit
- Department of Biochemistry and Molecular & Cellular Biology, Georgetown University Medical Center, Washington, DC
| | - Peter M Andrews
- Department of Biochemistry and Molecular & Cellular Biology, Georgetown University Medical Center, Washington, DC
| | - Moshe Levi
- Department of Biochemistry and Molecular & Cellular Biology, Georgetown University Medical Center, Washington, DC
| | - Qinggong Tang
- Fischell Department of Bioengineering, University of Maryland, College Park, Maryland
- Stephenson School of Biomedical Engineering, University of Oklahoma, Norman, Oklahoma
| | - Yu Chen
- Fujian Provincial Key Laboratory of Photonic Technology, Key Laboratory of Optoelectronic Science and Technology for Medicine, College of Photonic and Electronic Engineering, Fujian Normal University, Ministry of Education, Fuzhou, China
- Fischell Department of Bioengineering, University of Maryland, College Park, Maryland
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10
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11
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Zhao T, Liu X, Singh S, Liu X, Zhang Y, Sawada J, Komatsu M, Belfield KD. Mitochondria Penetrating Peptide-Conjugated TAMRA for Live-Cell Long-Term Tracking. Bioconjug Chem 2019; 30:2312-2316. [DOI: 10.1021/acs.bioconjchem.9b00465] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- Tinghan Zhao
- Department of Chemistry and Environmental Science, College of Science and Liberal Arts, New Jersey Institute of Technology, 323 Martin Luther King, Jr. Boulevard, Newark, New Jersey 07102, United States
| | - Xinglei Liu
- Department of Chemistry and Environmental Science, College of Science and Liberal Arts, New Jersey Institute of Technology, 323 Martin Luther King, Jr. Boulevard, Newark, New Jersey 07102, United States
| | - Sweety Singh
- Department of Chemistry and Environmental Science, College of Science and Liberal Arts, New Jersey Institute of Technology, 323 Martin Luther King, Jr. Boulevard, Newark, New Jersey 07102, United States
| | - Xiangshan Liu
- Department of Chemistry and Environmental Science, College of Science and Liberal Arts, New Jersey Institute of Technology, 323 Martin Luther King, Jr. Boulevard, Newark, New Jersey 07102, United States
| | - Yuanwei Zhang
- Department of Chemistry and Environmental Science, College of Science and Liberal Arts, New Jersey Institute of Technology, 323 Martin Luther King, Jr. Boulevard, Newark, New Jersey 07102, United States
| | - Junko Sawada
- Department of Orthopaedic Surgery, Johns Hopkins School of Medicine, 601 Fifth Street South, St. Petersburg, Florida 33701, United States
- Cancer and Blood Disorder Institute, Johns Hopkins All Children’s Hospital, 601 Fifth Street South, St. Petersburg, Florida 33701, United States
| | - Masanobu Komatsu
- Department of Orthopaedic Surgery, Johns Hopkins School of Medicine, 601 Fifth Street South, St. Petersburg, Florida 33701, United States
- Cancer and Blood Disorder Institute, Johns Hopkins All Children’s Hospital, 601 Fifth Street South, St. Petersburg, Florida 33701, United States
| | - Kevin D. Belfield
- Department of Chemistry and Environmental Science, College of Science and Liberal Arts, New Jersey Institute of Technology, 323 Martin Luther King, Jr. Boulevard, Newark, New Jersey 07102, United States
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12
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How to evaluate the cellular uptake of CPPs with fluorescence techniques: Dissecting methodological pitfalls associated to tryptophan-rich peptides. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2019; 1861:1533-1545. [PMID: 31283917 DOI: 10.1016/j.bbamem.2019.06.011] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/21/2018] [Revised: 06/10/2019] [Accepted: 06/27/2019] [Indexed: 11/21/2022]
Abstract
Cell-penetrating peptides (CPP) are broadly recognized as efficient non-viral vectors for the internalization of compounds such as peptides, oligonucleotides or proteins. Characterizing these carriers requires reliable methods to quantify their intracellular uptake. Flow cytometry on living cells is a method of choice but is not always applicable (e.g. big or polarized cells), so we decided to compare it to fluorescence spectroscopy on cell lysates. Surprisingly, for the internalization of a series of TAMRA-labeled conjugates formed of either cationic or amphipathic CPPs covalently coupled to a decamer peptide, we observed important differences in internalization levels between both methods. We partly explained these discrepancies by analyzing the effect of buffer conditions (pH, detergents) and peptide sequence/structure on TAMRA dye accessibility. Based on this analysis, we calculated a correction coefficient allowing a better coherence between both methods. However, an overestimated signal was still observable for both amphipathic peptides using the spectroscopic detection, which could be due to their localization at the cell membrane. Based on several in vitro experiments modeling events at the plasma membrane, we hypothesized that fluorescence of peptides entrapped in the membrane bilayer could be quenched by the tryptophan residues of close transmembrane proteins. During cell lysis, cell membranes are disintegrated liberating the entrapped peptides and restoring the fluorescence, explaining the divergences observed between flow cytometry and spectroscopy on lysates. Overall, our results highlighted major biases in the fluorescently-based quantification of internalized fluorescently-labeled CPP conjugates, which should be considered for accurate uptake quantification.
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Wang L, Du W, Hu Z, Uvdal K, Li L, Huang W. Hybrid Rhodamine Fluorophores in the Visible/NIR Region for Biological Imaging. Angew Chem Int Ed Engl 2019; 58:14026-14043. [DOI: 10.1002/anie.201901061] [Citation(s) in RCA: 144] [Impact Index Per Article: 28.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2019] [Indexed: 12/15/2022]
Affiliation(s)
- Liulin Wang
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM) Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM) Nanjing Tech University Nanjing 211816 P. R. China
| | - Wei Du
- Shaanxi Institute of Flexible Electronics (SIFE) Northwestern Polytechnical University Xi'an 710072 P. R. China
| | - Zhangjun Hu
- Department of Physics, Chemistry and Biology Linköping University Linköping 58183 Sweden
| | - Kajsa Uvdal
- Department of Physics, Chemistry and Biology Linköping University Linköping 58183 Sweden
| | - Lin Li
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM) Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM) Nanjing Tech University Nanjing 211816 P. R. China
| | - Wei Huang
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM) Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM) Nanjing Tech University Nanjing 211816 P. R. China
- Shaanxi Institute of Flexible Electronics (SIFE) Northwestern Polytechnical University Xi'an 710072 P. R. China
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14
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Wang L, Du W, Hu Z, Uvdal K, Li L, Huang W. Hybrid Rhodamine Fluorophores in the Visible/NIR Region for Biological Imaging. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201901061] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Liulin Wang
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM) Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM) Nanjing Tech University Nanjing 211816 P. R. China
| | - Wei Du
- Shaanxi Institute of Flexible Electronics (SIFE) Northwestern Polytechnical University Xi'an 710072 P. R. China
| | - Zhangjun Hu
- Department of Physics, Chemistry and Biology Linköping University Linköping 58183 Sweden
| | - Kajsa Uvdal
- Department of Physics, Chemistry and Biology Linköping University Linköping 58183 Sweden
| | - Lin Li
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM) Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM) Nanjing Tech University Nanjing 211816 P. R. China
| | - Wei Huang
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM) Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM) Nanjing Tech University Nanjing 211816 P. R. China
- Shaanxi Institute of Flexible Electronics (SIFE) Northwestern Polytechnical University Xi'an 710072 P. R. China
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15
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Hu K, Cheng J, Lu B, Zhao W, Dong C, Yang H, Huang Y, Zhang S. Magnetic mesoporous polyimide composite for efficient extraction of Rhodamine B in food samples. J Sep Sci 2019; 42:2023-2031. [DOI: 10.1002/jssc.201900054] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2019] [Revised: 03/25/2019] [Accepted: 03/25/2019] [Indexed: 01/04/2023]
Affiliation(s)
- Kai Hu
- Henan University of Chinese Medicine Zhengzhou P. R. China
| | - Jiamin Cheng
- Henan University of Chinese Medicine Zhengzhou P. R. China
| | - Binbin Lu
- Zhengzhou Tobacco Research Institute of CNTC Zhengzhou P. R. China
| | - Wenjie Zhao
- School of Chemistry and Chemical & Environmental EngineeringHenan University of Technology Zhengzhou P. R. China
| | - Chunhong Dong
- Henan University of Chinese Medicine Zhengzhou P. R. China
| | - Huaixia Yang
- Henan University of Chinese Medicine Zhengzhou P. R. China
| | - Yanjie Huang
- Henan University of Chinese Medicine Zhengzhou P. R. China
| | - Shusheng Zhang
- Center for Advanced Analysis and Computational ScienceZhengzhou University Zhengzhou P. R. China
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16
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Xu L, Suo H, Liu R, Liu H, Qiu H. Design of GO–Ag-functionalized Fe3O4@CS composite for magnetic adsorption of rhodamine B. RSC Adv 2019; 9:30125-30133. [PMID: 35530204 PMCID: PMC9072105 DOI: 10.1039/c9ra04897a] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2019] [Accepted: 09/16/2019] [Indexed: 11/21/2022] Open
Abstract
In this study, a novel magnetic composite (Fe3O4@CS/GO/Ag) modified with chitosan (CS), graphene oxide (GO) and Ag nanoparticles (Ag NPs) was successfully prepared as an efficient adsorbent for detection of rhodamine B (RB) combined with a fluorescence technique. The properties of the magnetic composite were confirmed by field emission scanning electron microscopy, energy dispersive X-ray spectroscopy, and vibrating sample magnetometry. The components of Fe3O4@CS/GO/Ag endowed it with excellent extraction performance and convenient operation. The main parameters affecting extraction and desorption efficiency were all investigated systematically. Under the optimized experimental conditions, the proposed method showed linear ranges (0.2–6.0 μg L−1) with R2 = 0.9992. The limits of detection (LODs) and quantification (LOQs) were 0.05 and 0.2 μg L−1 (n = 3), respectively. Fe3O4@CS/GO/Ag exhibited outstanding extraction efficiency for RB, compared with CS-coated Fe3O4 nanoparticles (Fe3O4@CS) and GO-modified Fe3O4@CS (Fe3O4@CS/GO). The applicability of the proposed method was investigated by analyzing four real samples (waste water, soft drink, shampoo, and red pencil) and the spiked recoveries ranged between 94% and 97% with RSD ranging from 3% to 6%, which showed that the proposed method had satisfactory practicability and operability. A novel magnetic composite modified with chitosan, graphene oxide and Ag nanoparticles, was successfully prepared as an efficient adsorbent for detection of rhodamine B combining with fluorescence technique.![]()
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Affiliation(s)
- Lili Xu
- School of Pharmacy
- Liaocheng University
- Liaocheng
- China
| | - Hongbo Suo
- School of Pharmacy
- Liaocheng University
- Liaocheng
- China
| | - Renmin Liu
- School of Pharmacy
- Liaocheng University
- Liaocheng
- China
| | - Houmei Liu
- School of Pharmaceutical Sciences
- Shandong University
- Jinan
- China
| | - Hongdeng Qiu
- Key Laboratory of Chemistry of Northwestern Plant Resources
- Key Laboratory for Natural Medicine of Gansu Province
- Lanzhou Institute of Chemical Physics
- Chinese Academy of Sciences
- Lanzhou 730000
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17
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Li X, Chen S, Liu Z, Zhao Z, Lu J. Syntheses and evaluations of the methoxy modified 99mTc-labeled triphenyl phosphonium cations: Potential radiometallic probes for multidrug resistance detection. J Organomet Chem 2018. [DOI: 10.1016/j.jorganchem.2018.07.003] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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18
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Pruna R, Baraket A, Bonhommé A, Zine N, Errachid A, López M. Novel nanostructured indium tin oxide electrode for electrochemical immunosensors: Suitability for the detection of TNF-α. Electrochim Acta 2018. [DOI: 10.1016/j.electacta.2018.07.066] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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19
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Ahmad KS, Jaffri SB. Phytosynthetic Ag doped ZnO nanoparticles: Semiconducting green remediators. OPEN CHEM 2018. [DOI: 10.1515/chem-2018-0060] [Citation(s) in RCA: 58] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
AbstractHighly stable semiconducting silver doped zinc oxide nanoparticles have been synthesized via facile, biomimetic and sustainable route, through utilization of Zinc acetate dihydrate (C4H6O4Zn · 2H2O) as host, Silver nitrate (AgNO3) as dopant and phytochemicals of angiospermic medicinal plant Prunus cerasifera as the reducing agents. Synthesis of Ag doped ZnO nanoparticles was done in a one pot synthetic mode by varying the amount of dopant from 0.2 – 2.0%. Synthesized photocatalyst nanoparticles were analyzed via UV-vis, FTIR, XRD and SEM. Commendable alleviation in the direct band gap i.e. 2.81 eV was achieved as a result of doping. Silver doped zinc oxide nanoparticles size ranged between 72.11 – 100 nm with rough surface morphology and higher polydispersity degree. The XRD patterns revealed the hexagonal wurtzite geometry of crystals with an average crystallite size of 2.99 nm. Persistent organic dyes Methyl Orange, Safranin O and Rhodamine B were sustainably photodegraded in direct solar irradiance with remarkable degradation percentages up to 81.76, 74.11 and 85.52% in limited time with pseudo first order reaction kinetics (R2 =0.99, 0.99 and 0.97). Furthermore, efficient inhibition against nine microbes of biomedical and agriculturally significance was achieved. Synthesized nanoparticles are potential green remediators of polluted water and perilous pathogens.
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Affiliation(s)
- Khuram Shahzad Ahmad
- Department of Environmental Sciences, Fatima Jinnah Women University, The Mall, 46000, Rawalpindi,
| | - Shaan Bibi Jaffri
- Department of Environmental Sciences, Fatima Jinnah Women University, The Mall, 46000, Rawalpindi,
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20
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Jiang SH, Cheng YY, Huo TI, Tsai TH. Pharmacokinetics of Rhodamine 110 and Its Organ Distribution in Rats. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2017; 65:7797-7804. [PMID: 28793756 DOI: 10.1021/acs.jafc.7b02685] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Rhodamine dyes have been banned as food additives due to their potential tumorigenicity. Rhodamine 110 is illegal as a food additive, although its pharmacokinetics have not been characterized, and no accurate bioanalytical methods are available to quantify rhodamine 110. The aim of this study was to develop and validate a fast, stable, and sensitive method to quantify rhodamine 110 using high-performance liquid chromatography coupled to tandem mass spectrometry (HPLC-MS/MS) to assess its pharmacokinetics and organ distribution in awake rats. Rhodamine 110 exhibited linear pharmacokinetics and slow elimination after oral administration. Furthermore, its oral bioavailability was approximately 34-35%. The distribution in the liver and kidney suggests that these organs are primarily responsible for rhodamine 110 metabolism and elimination. Our investigation describes the pharmacokinetics and a quantification method for rhodamine 110, improving our understanding of the food safety of rhodamine dyes.
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Affiliation(s)
- Shiau-Han Jiang
- Institute of Pharmacology, National Yang-Ming University , Taipei, Taiwan
| | - Yung-Yi Cheng
- Institute of Traditional Medicine, National Yang-Ming University , Taipei, Taiwan
| | - Teh-Ia Huo
- Institute of Pharmacology, National Yang-Ming University , Taipei, Taiwan
| | - Tung-Hu Tsai
- Institute of Traditional Medicine, National Yang-Ming University , Taipei, Taiwan
- Graduate Institute of Acupuncture Science, China Medical University , Taichung, Taiwan
- School of Pharmacy, College of Pharmacy, Kaohsiung Medical University , Kaohsiung, Taiwan
- Department of Chemical Engineering, National United University , Miaoli, Taiwan
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21
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Eling CJ, Price TW, Marshall ARL, Narda Viscomi F, Robinson P, Firth G, Adawi AM, Bouillard JSG, Stasiuk GJ. A Dual-Modal SERS/Fluorescence Gold Nanoparticle Probe for Mitochondrial Imaging. Chempluschem 2017; 82:674-680. [DOI: 10.1002/cplu.201600593] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2016] [Revised: 01/09/2017] [Indexed: 12/19/2022]
Affiliation(s)
- Charlotte J. Eling
- School of Life Sciences, Biomedical Section; University of Hull; Cottingham Road Hull HU6 7RX United Kingdom
- School of Mathematics and Physical Sciences; Department of Physics and Mathematics; University of Hull; United Kingdom
| | - Thomas W. Price
- School of Life Sciences, Biomedical Section; University of Hull; Cottingham Road Hull HU6 7RX United Kingdom
| | - Addison R. L. Marshall
- School of Mathematics and Physical Sciences; Department of Physics and Mathematics; University of Hull; United Kingdom
| | - Francesco Narda Viscomi
- School of Mathematics and Physical Sciences; Department of Physics and Mathematics; University of Hull; United Kingdom
| | - Peter Robinson
- School of Mathematics and Physical Sciences; Department of Physics and Mathematics; University of Hull; United Kingdom
| | - George Firth
- School of Life Sciences, Biomedical Section; University of Hull; Cottingham Road Hull HU6 7RX United Kingdom
| | - Ali M. Adawi
- School of Mathematics and Physical Sciences; Department of Physics and Mathematics; University of Hull; United Kingdom
- G. W. Gray Centre for Advanced Materials; University of Hull; United Kingdom
| | - Jean-Sebastien G. Bouillard
- School of Mathematics and Physical Sciences; Department of Physics and Mathematics; University of Hull; United Kingdom
- Department of Physics; King's College London; Strand London WC2R 2LS United Kingdom
- G. W. Gray Centre for Advanced Materials; University of Hull; United Kingdom
| | - Graeme J. Stasiuk
- School of Life Sciences, Biomedical Section; University of Hull; Cottingham Road Hull HU6 7RX United Kingdom
- Positron Emission Tomography Research Centre; University of Hull; United Kingdom
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22
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Zhai H, Huang L, Chen Z, Su Z, Yuan K, Liang G, Pan Y. Chip-based molecularly imprinted monolithic capillary array columns coated GO/SiO 2 for selective extraction and sensitive determination of rhodamine B in chili powder. Food Chem 2017; 214:664-669. [DOI: 10.1016/j.foodchem.2016.07.124] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2015] [Revised: 07/19/2016] [Accepted: 07/20/2016] [Indexed: 12/12/2022]
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23
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Sun D, Yang X. Rapid Determination of Toxic Rhodamine B in Food Samples Using Exfoliated Graphene-Modified Electrode. FOOD ANAL METHOD 2016. [DOI: 10.1007/s12161-016-0773-2] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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24
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Wang XL, Li XJ, Sun R, Xu YJ, Ge JF. A comparative study of lysosome-targetable pH probes based on phenoxazinium attached with aliphatic and aromatic amines. Analyst 2016; 141:2962-9. [DOI: 10.1039/c6an00258g] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Phenoxazinium was used as a fluorophore for the design of pH probes by the photoinduced electron transfer (PET) mechanism.
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Affiliation(s)
- Xiu-Li Wang
- College of Chemistry
- Chemical Engineering and Material Science
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials
- Soochow University
- Suzhou 215123
| | - Xiao-Jun Li
- School of Radiation Medicine and Protection
- Medicine College of Soochow University
- Suzhou 215123
- China
| | - Ru Sun
- College of Chemistry
- Chemical Engineering and Material Science
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials
- Soochow University
- Suzhou 215123
| | - Yu-Jie Xu
- School of Radiation Medicine and Protection
- Medicine College of Soochow University
- Suzhou 215123
- China
| | - Jian-Feng Ge
- College of Chemistry
- Chemical Engineering and Material Science
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials
- Soochow University
- Suzhou 215123
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25
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Benz[c,d]indolium-containing Monomethine Cyanine Dyes: Synthesis and Photophysical Properties. Molecules 2015; 21:E23. [PMID: 26712725 PMCID: PMC6274575 DOI: 10.3390/molecules21010023] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2015] [Revised: 12/17/2015] [Accepted: 12/18/2015] [Indexed: 01/24/2023] Open
Abstract
Asymmetric monomethine cyanines have been extensively used as probes for nucleic acids among other biological systems. Herein we report the synthesis of seven monomethine cyanine dyes that have been successfully prepared with various heterocyclic moieties such as quinoline, benzoxazole, benzothiazole, dimethyl indole, and benz[e]indole adjoining benz[c,d]indol-1-ium, which was found to directly influence their optical and energy profiles. In this study the optical properties vs. structural changes were investigated using nuclear magnetic resonance and computational approaches. The twisted conformation unique to monomethine cyanines was exploited in DNA binding studies where the newly designed sensor displayed an increase in fluorescence when bound in the DNA grooves compared to the unbound form.
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26
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Xu X, Zhang M, Wang L, Zhang S, Liu M, Long N, Qi X, Cui Z, Zhang L. Determination of Rhodamine B in Food Using Ionic Liquid–Coated Multiwalled Carbon Nanotube–Based Ultrasound-Assisted Dispersive Solid-Phase Microextraction Followed by High-Performance Liquid Chromatography. FOOD ANAL METHOD 2015. [DOI: 10.1007/s12161-015-0345-x] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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27
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Murrey HE, Judkins JC, Am Ende CW, Ballard TE, Fang Y, Riccardi K, Di L, Guilmette ER, Schwartz JW, Fox JM, Johnson DS. Systematic Evaluation of Bioorthogonal Reactions in Live Cells with Clickable HaloTag Ligands: Implications for Intracellular Imaging. J Am Chem Soc 2015; 137:11461-75. [PMID: 26270632 PMCID: PMC4572613 DOI: 10.1021/jacs.5b06847] [Citation(s) in RCA: 133] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
![]()
Bioorthogonal
reactions, including the strain-promoted azide–alkyne
cycloaddition (SPAAC) and inverse electron demand Diels–Alder
(iEDDA) reactions, have become increasingly popular for live-cell
imaging applications. However, the stability and reactivity of reagents
has never been systematically explored in the context of a living
cell. Here we report a universal, organelle-targetable system based
on HaloTag protein technology for directly comparing bioorthogonal
reagent reactivity, specificity, and stability using clickable HaloTag
ligands in various subcellular compartments. This system enabled a
detailed comparison of the bioorthogonal reactions in live cells and
informed the selection of optimal reagents and conditions for live-cell
imaging studies. We found that the reaction of sTCO with monosubstituted
tetrazines is the fastest reaction in cells; however, both reagents
have stability issues. To address this, we introduced a new variant
of sTCO, Ag-sTCO, which has much improved stability and can be used
directly in cells for rapid bioorthogonal reactions with tetrazines.
Utilization of Ag complexes of conformationally strained trans-cyclooctenes should greatly expand their usefulness especially when
paired with less reactive, more stable tetrazines.
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Affiliation(s)
- Heather E Murrey
- Worldwide Medicinal Chemistry, Pfizer Worldwide Research and Development , Cambridge, Massachusetts 02139, United States
| | - Joshua C Judkins
- Worldwide Medicinal Chemistry, Pfizer Worldwide Research and Development , Cambridge, Massachusetts 02139, United States
| | - Christopher W Am Ende
- Worldwide Medicinal Chemistry, Pfizer Worldwide Research and Development , Cambridge, Massachusetts 02139, United States
| | - T Eric Ballard
- Worldwide Medicinal Chemistry, Pfizer Worldwide Research and Development , Cambridge, Massachusetts 02139, United States.,Pharmacokinetics, Dynamics and Metabolism, Pfizer Worldwide Research and Development , Groton, Connecticut 06340, United States
| | - Yinzhi Fang
- Brown Laboratories, Department of Chemistry and Biochemistry, University of Delaware , Newark, Delaware 19716, United States
| | - Keith Riccardi
- Pharmacokinetics, Dynamics and Metabolism, Pfizer Worldwide Research and Development , Groton, Connecticut 06340, United States
| | - Li Di
- Pharmacokinetics, Dynamics and Metabolism, Pfizer Worldwide Research and Development , Groton, Connecticut 06340, United States
| | - Edward R Guilmette
- Neuroscience and Pain Research Unit, Pfizer Worldwide Research and Development , Cambridge, Massachusetts 02139, United States
| | - Joel W Schwartz
- Neuroscience and Pain Research Unit, Pfizer Worldwide Research and Development , Cambridge, Massachusetts 02139, United States
| | - Joseph M Fox
- Brown Laboratories, Department of Chemistry and Biochemistry, University of Delaware , Newark, Delaware 19716, United States
| | - Douglas S Johnson
- Worldwide Medicinal Chemistry, Pfizer Worldwide Research and Development , Cambridge, Massachusetts 02139, United States
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28
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Gracie K, Smith WE, Yip P, Sutter JU, Birch DJS, Graham D, Faulds K. Interaction of fluorescent dyes with DNA and spermine using fluorescence spectroscopy. Analyst 2015; 139:3735-43. [PMID: 24915043 DOI: 10.1039/c4an00680a] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Oligonucleotides labelled with fluorescent dyes are widely used as probes for the identification of DNA sequences in detection methods using optical spectroscopies such as fluorescence and surface enhanced Raman scattering (SERS). Spermine is widely used in surface enhanced based assays as a charge reduction and aggregating agent as it interacts strongly with the phosphate backbone and has shown to enhance the signal of a labelled oligonucleotide. The fluorescence intensity of two commonly used labels, FAM and TAMRA, were compared when spermine was added under different experimental conditions. There was a marked difference upon conjugating the free dye to an oligonucleotide, when FAM was conjugated to an oligonucleotide there was around a six fold decrease in emission, compared to a six fold increase when TAMRA was conjugated to an oligonucleotide. Dye labelled single and double stranded DNA also behaved differently with double stranded DNA labelled with FAM being a much more efficient emitter in the mid pH range, however TAMRA becomes increasingly less efficient as the pH rises. Upon addition of the base spermine, signal enhancement from the FAM labelled oligonucleotide is observed. Increasing probe concentrations of TAMRA oligonucleotide above 0.5 μM led to signal reduction most likely through quenching, either by an interaction with guanine, or through self-quenching. By using different bases for comparison, spermine and triethylamine (TEA), different affects were observed in the measured fluorescence signals. When TEA was added to FAM, a reduction in the pH dependence of fluorescence was observed, which may be useful for mid pH range assays. With the drive to increase information content and decrease time and complexity of DNA assays it is likely that more assays will be carried out in complex media such as extracted DNA fragments and PCR product. This model study indicates that dye DNA and dye spermine interactions are dye specific and that extreme care with conditions is necessary particularly if it is intended to determine the concentrations of multiple analytes using probes labelled with different dyes.
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Affiliation(s)
- K Gracie
- Centre of Molecular Nanometrology, WestChem, Department of Pure and Applied Chemistry, University of Strathclyde, 295 Cathedral Street, Glasgow, G1 1XL, UK.
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29
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Jing C, Cornish VW. Design, synthesis, and application of the trimethoprim-based chemical tag for live-cell imaging. ACTA ACUST UNITED AC 2015; 5:131-55. [PMID: 23839994 DOI: 10.1002/9780470559277.ch130019] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Over the past decade, chemical tags have been developed to complement the use of fluorescent proteins in live-cell imaging. Chemical tags retain the specificity of protein labeling achieved with fluorescent proteins through genetic encoding, but provide smaller, more robust tags and modular use of organic fluorophores with high photon output and tailored functionalities. The trimethoprim-based chemical tag (TMP-tag) was initially developed based on the high affinity interaction between E. coli dihydrofolate reductase and the antibiotic trimethoprim and was subsequently rendered covalent and fluorogenic via proximity-induced protein labeling reactions. To date, the TMP-tag is one of the few chemical tags that enable intracellular protein labeling and high-resolution live-cell imaging. Here we describe the general design, chemical synthesis, and application of TMP-tag for live-cell imaging. Alternate protocols for synthesizing and using the covalent and the fluorogenic TMP-tags are also included.
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Affiliation(s)
- Chaoran Jing
- Department of Chemistry, Columbia University, New York, New York, USA
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30
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Yu Y, Cheng X, Liu H, Gu S, Jiang Z, Huang H, Lian J. Highly sensitive fluorescent polyamide for detection of Hg2+, Hg+, Fe3+, and Fe2+ions. ACTA ACUST UNITED AC 2014. [DOI: 10.1002/pola.27489] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Yun Yu
- College of Textiles and Garments, Southwest University; Chongqing 400715 People's Republic of China
- School of Chemistry and Materials Science, South-Central University for Nationalities; Wuhan 430074 People's Republic of China
| | - Xinjian Cheng
- College of Textiles and Garments, Southwest University; Chongqing 400715 People's Republic of China
- School of Chemistry and Materials Science, South-Central University for Nationalities; Wuhan 430074 People's Republic of China
| | - Honglin Liu
- School of Chemistry and Materials Science, South-Central University for Nationalities; Wuhan 430074 People's Republic of China
| | - Shuangying Gu
- School of Chemistry and Materials Science, South-Central University for Nationalities; Wuhan 430074 People's Republic of China
| | - Zhuoni Jiang
- School of Chemistry and Materials Science, South-Central University for Nationalities; Wuhan 430074 People's Republic of China
| | - Hui Huang
- LMB, South China Sea Institute of Oceanology, Chinese Academy of Sciences; Guangzhou 510301 People's Republic of China
| | - Jiansheng Lian
- LMB, South China Sea Institute of Oceanology, Chinese Academy of Sciences; Guangzhou 510301 People's Republic of China
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31
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Su X, Li X, Li J, Liu M, Lei F, Tan X, Li P, Luo W. Synthesis and characterization of core-shell magnetic molecularly imprinted polymers for solid-phase extraction and determination of Rhodamine B in food. Food Chem 2014; 171:292-7. [PMID: 25308672 DOI: 10.1016/j.foodchem.2014.09.024] [Citation(s) in RCA: 102] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2014] [Revised: 09/04/2014] [Accepted: 09/06/2014] [Indexed: 10/24/2022]
Abstract
Core-shell magnetic molecularly imprinted polymers (MIPs) nanoparticles (NPs), in which a Rhodamine B-imprinted layer was coated on Fe3O4 NPs. were synthesized. First, Fe3O4 NPs were prepared by a coprecipitation method. Then, amino-modified Fe3O4 NPs (Fe3O4@SiO2-NH2) was prepared. Finally, the MIPs were coated on the Fe3O4@SiO2-NH2 surface by the copolymerization with functional monomer, acrylamide, using a cross-linking agent, ethylene glycol dimethacrylate; an initiator, azobisisobutyronitrile and a template molecule, Rhodamine B. The Fe3O4@MIPs were characterized using a scanning electron microscope, Fourier transform infrared spectrometer, vibrating sample magnetometer, and re-binding experiments. The Fe3O4@MIPs showed a fast adsorption equilibrium, a highly improved imprinting capacity, and significant selectivity; they could be used as a solid-phase extraction material and detect illegal addition Rhodamine B in food. A method was developed for the selective isolation and enrichment of Rhodamine B in food samples with recoveries in the range 78.47-101.6% and the relative standard deviation was <2%.
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Affiliation(s)
- Xiaomeng Su
- School of Chemistry and Chemical Engineering, Guangxi University for Nationalities, Key Laboratory of Chemistry and Engineering of Forest Products, Nanning, Guangxi 530008, China
| | - Xiaoyan Li
- School of Chemistry and Chemical Engineering, Guangxi University for Nationalities, Key Laboratory of Chemistry and Engineering of Forest Products, Nanning, Guangxi 530008, China.
| | - Junjie Li
- School of Chemistry and Chemical Engineering, Guangxi University, Nanning, Guangxi 530004, China
| | - Min Liu
- School of Chemistry and Chemical Engineering, Guangxi University for Nationalities, Key Laboratory of Chemistry and Engineering of Forest Products, Nanning, Guangxi 530008, China
| | - Fuhou Lei
- School of Chemistry and Chemical Engineering, Guangxi University for Nationalities, Key Laboratory of Chemistry and Engineering of Forest Products, Nanning, Guangxi 530008, China
| | - Xuecai Tan
- School of Chemistry and Chemical Engineering, Guangxi University for Nationalities, Key Laboratory of Chemistry and Engineering of Forest Products, Nanning, Guangxi 530008, China
| | - Pengfei Li
- School of Chemistry and Chemical Engineering, Guangxi University for Nationalities, Key Laboratory of Chemistry and Engineering of Forest Products, Nanning, Guangxi 530008, China
| | - Weiqiang Luo
- School of Chemistry and Chemical Engineering, Guangxi University for Nationalities, Key Laboratory of Chemistry and Engineering of Forest Products, Nanning, Guangxi 530008, China
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32
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Nakajima T, Sano K, Sato K, Watanabe R, Harada T, Hanaoka H, Choyke PL, Kobayashi H. Fluorescence-lifetime molecular imaging can detect invisible peritoneal ovarian tumors in bloody ascites. Cancer Sci 2014; 105:308-14. [PMID: 24479901 PMCID: PMC3949209 DOI: 10.1111/cas.12343] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2013] [Revised: 12/17/2013] [Accepted: 12/18/2013] [Indexed: 11/27/2022] Open
Abstract
Blood contamination, such as bloody ascites or hemorrhages during surgery, is a potential hazard for clinical application of fluorescence imaging. In order to overcome this problem, we investigate if fluorescence-lifetime imaging helps to overcome this problem. Samples were prepared at concentrations ranging 0.3-2.4 μm and mixed with 0-10% of blood. Fluorescence intensities and lifetimes of samples were measured using a time-domain fluorescence imager. Ovarian cancer SHIN3 cells overexpressing the D-galactose receptor were injected into the peritoneal cavity 2.5 weeks before the experiments. Galactosyl serum albumin-rhodamine green (GSA-RhodG), which bound to the D-galactose receptor and was internalized thereafter, was administered intraperitoneally to peritoneal ovarian cancer-bearing mice with various degrees of bloody ascites. In vitro study showed a linear correlation between fluorescence intensity and probe concentration (r(2) > 0.99), whereas the fluorescence lifetime was consistent (range, 3.33 ± 0.15-3.75 ± 0.04 ns). By adding 10% of blood to samples, fluorescence intensities decreased to <1%, while fluorescence lifetimes were consistent. In vivo fluorescence lifetime of GSA-RhodG stained tumors was longer than the autofluorescence lifetime (threshold, 2.87 ns). Tumor lesions under hemorrhagic peritonitis were not depicted using fluorescence intensity imaging; however, fluorescence-lifetime imaging clearly detected tumor lesions by prolonged lifetimes. In conclusion, fluorescence-lifetime imaging with GSA-RhodG depicted ovarian cancer lesions, which were invisible in intensity images, in hemorrhagic ascites.
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Affiliation(s)
- Takahito Nakajima
- Molecular Imaging Program, Center for Cancer Research, National Cancer Institute, NIH, Bethesda, MA, USA
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33
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Rivas C, Stasiuk G, Gallo J, Minuzzi F, Rutter GA, Long NJ. Lanthanide(III) complexes of rhodamine-DO3A conjugates as agents for dual-modal imaging. Inorg Chem 2013; 52:14284-93. [PMID: 24304423 PMCID: PMC4024063 DOI: 10.1021/ic402233g] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2013] [Indexed: 01/09/2023]
Abstract
Two novel dual-modal MRI/optical probes based on a rhodamine-DO3A conjugate have been prepared. The bis(aqua)gadolinium(III) complex Gd.L1 and mono(aqua)gadolinium(III) complex Gd.L2 behave as dual-modal imaging probes (r1 = 8.5 and 3.8 mM(-1) s(-1) for Gd.L1 and Gd.L2, respectively; λex = 560 nm and λem = 580 nm for both complexes). The rhodamine fragment is pH-sensitive, and upon lowering of the pH, an increase in fluorescence intensity is observed as the spirolactam ring opens to give the highly fluorescent form of the molecule. The ligands are bimodal when coordinated to Tb(III) ions, inducing fluorescence from both the lanthanide center and the rhodamine fluorophore, on two independent time frames. Confocal imaging experiments were carried out to establish the localization of Gd.L2 in HEK293 cells and primary mouse islet cells (∼70% insulin-containing β cells). Colocalization with MitoTracker Green demonstrated Gd.L2's ability to distinguish between tumor and healthy cells, with compartmentalization believed to be in the mitochondria. Gd.L2 was also evaluated as an MRI probe for imaging of tumors in BALB/c nude mice bearing M21 xenografts. A 36.5% decrease in T1 within the tumor was observed 30 min post injection, showing that Gd.L2 is preferentially up taken in the tumor. Gd.L2 is the first small-molecule MR/fluorescent dual-modal imaging agent to display an off-on pH switch upon its preferential uptake within the more acidic microenvironment of tumor cells.
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Affiliation(s)
- Charlotte Rivas
- Department
of Chemistry, Imperial College London, South Kensington, London SW7 2AZ, U.K.
| | - Graeme
J. Stasiuk
- Department
of Chemistry, Imperial College London, South Kensington, London SW7 2AZ, U.K.
| | - Juan Gallo
- Department
of Chemistry, Imperial College London, South Kensington, London SW7 2AZ, U.K.
| | - Florencia Minuzzi
- Section
of Cell Biology, Division of Diabetes, Endocrinology and Metabolism,
Department of Medicine, Imperial College
London, South Kensington, London SW7 2AZ, U.K.
| | - Guy A. Rutter
- Section
of Cell Biology, Division of Diabetes, Endocrinology and Metabolism,
Department of Medicine, Imperial College
London, South Kensington, London SW7 2AZ, U.K.
| | - Nicholas J. Long
- Department
of Chemistry, Imperial College London, South Kensington, London SW7 2AZ, U.K.
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Alexander VM, Choyke PL, Kobayashi H. Fluorescent molecular imaging: technical progress and current preclinical and clinical applications in urogynecologic diseases. Curr Mol Med 2013; 13:1568-78. [PMID: 24206135 DOI: 10.2174/1566524013666131111125758] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2012] [Revised: 05/18/2012] [Accepted: 09/10/2013] [Indexed: 02/02/2023]
Abstract
Many molecular imaging probes have been developed in recent years that hold great promise for both diagnostic and therapeutic functions in urogynecologic disease. Historically, optical probe designs were based on either endogenous or exogenous fluorophores. More recently, organic fluorophore probes have been engineered to target specific tissues and emit fluorescence only upon binding to targets. Several different photochemical mechanisms of activation exist. This review presents a discussion of the history and development of molecular imaging probe designs and provides an overview of successful preclinical and clinical models employing molecular probes for in vivo imaging of urogynecologic cancers.
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Affiliation(s)
- V M Alexander
- Molecular Imaging Program, NCI/NIH, Building 10, Room B3B69, MSC 1088, Bethesda, Maryland 20892-1088, USA.
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Mitochondrial-targeted prodrug cancer therapy using a rhodamine B labeled fluorinated docetaxel. Eur J Pharm Biopharm 2013; 85:541-9. [DOI: 10.1016/j.ejpb.2013.06.008] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2012] [Revised: 06/01/2013] [Accepted: 06/09/2013] [Indexed: 01/21/2023]
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Multimodality PET/MRI agents targeted to activated macrophages. J Biol Inorg Chem 2013; 19:247-58. [PMID: 24166283 DOI: 10.1007/s00775-013-1054-9] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2013] [Accepted: 10/08/2013] [Indexed: 12/18/2022]
Abstract
The recent emergence of multimodality imaging, particularly the combination of PET and MRI, has led to excitement over the prospect of improving detection of disease. Iron oxide nanoparticles have become a popular platform for the fabrication of PET/MRI probes owing to their advantages of high MRI detection sensitivity, biocompatibility, and biodegradability. In this article, we report the synthesis of dextran-coated iron oxide nanoparticles (DIO) labeled with the positron emitter (64)Cu to generate a PET/MRI probe, and modified with maleic anhydride to increase the negative surface charge. The modified nanoparticulate PET/MRI probe (MDIO-(64)Cu-DOTA) bears repetitive anionic charges on the surface that facilitate recognition by scavenger receptor type A (SR-A), a ligand receptor found on activated macrophages but not on normal vessel walls. MDIO-(64)Cu-DOTA has an average iron oxide core size of 7-8 nm, an average hydrodynamic diameter of 62.7 nm, an r1 relaxivity of 16.8 mM(-1) s(-1), and an r 2 relaxivity of 83.9 mM(-1) s(-1) (37 °C, 1.4 T). Cell studies confirmed that the probe was nontoxic and was specifically taken up by macrophages via SR-A. In comparison with the nonmodified analog, the accumulation of MDIO in macrophages was substantially improved. These characteristics demonstrate the promise of MDIO-(64)Cu-DOTA for identification of vulnerable atherosclerotic plaques via the targeting of macrophages.
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Liu K, Wang L. Enantioseparations of amino acids by capillary array electrophoresis with 532nm laser induced fluorescence detection. J Chromatogr A 2013; 1295:142-6. [DOI: 10.1016/j.chroma.2013.04.058] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2012] [Revised: 03/25/2013] [Accepted: 04/17/2013] [Indexed: 02/06/2023]
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Rodriguez-Panadero F, Romero-Romero B. Current and future options for the diagnosis of malignant pleural effusion. ACTA ACUST UNITED AC 2013; 7:275-87. [PMID: 23550710 DOI: 10.1517/17530059.2013.786038] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
INTRODUCTION Malignant pleural effusion (MPE) is a frequent problem faced by clinicians, but tumor pleural involvement can be seen without effusion. AREAS COVERED Imaging, pleural fluid analysis, biomarkers for MPE, needle pleural biopsy and thoracoscopy. To prepare this review, we performed a search using keywords: 'diagnosis' + 'malignant' + 'pleural' + 'effusion' (all fields) in PubMed, and found 4106 articles overall (until 16 January 2013, 881 in the last 5 years). EXPERT OPINION Ultrasound techniques will stay as valuable tools for pleural effusions. Biomarkers in pleural fluid do not currently provide an acceptable yield for MPE. In subjects with past history of asbestos exposure, some serum or plasma markers (soluble mesothelin, fibulin) might help in selecting cases for close follow-up, to detect mesothelioma early. Needle pleural biopsy is justified only if used with image-techniques (ultrasound or CT) guidance, and thoracoscopy is better for both diagnosis and immediate palliative treatment (pleurodesis). Animal models of MPE and 'spheroids' are promising for research involving both pathophysiology and therapy. Considering the possibility of direct pleural delivery of nanotechnology-developed compounds-fit to both diagnosis and therapy purposes ('theranostics')-MPE and mesothelioma in particular are likely to benefit sooner than later from this exciting perspective.
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Affiliation(s)
- Francisco Rodriguez-Panadero
- Unidad Médico-Quirúrgica de Enfermedades Respiratorias (UMQUER), Hospital Universitario Virgen del Rocío, Seville, Spain.
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Smith BR, Zavaleta C, Rosenberg J, Tong R, Ramunas J, Liu Z, Dai H, Gambhir SS. High-resolution, serial intravital microscopic imaging of nanoparticle delivery and targeting in a small animal tumor model. NANO TODAY 2013; 8:10.1016/j.nantod.2013.02.004. [PMID: 24273594 PMCID: PMC3836612 DOI: 10.1016/j.nantod.2013.02.004] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Nanoparticles are under active investigation for the detection and treatment of cancer. Yet our understanding of nanoparticle delivery to tumors is limited by our ability to observe the uptake process on its own scale in living subjects. We chose to study single-walled carbon nanotubes (SWNTs) because they exhibit among the highest levels of tumor uptake across the wide variety of available nanoparticles. We target them using RGD (arginine-glycine-aspartic acid) peptide which directs them to integrins overexpressed on tumor vasculature and on the surface of some tumor cells (e.g., U87MG as used here). We employ intravital microscopy (IVM) to quantitatively examine the spatiotemporal framework of targeted SWNT uptake in a murine tumor model. IVM provided a dynamic microscale window into nanoparticle circulation, binding to tumor blood vessels, extravasation, binding to tumor cells, and tumor retention. RGD-SWNTs bound to tumor vasculature significantly more than controls (P<0.0001). RGD-SWNTs extravasated similarly compared to control RAD-SWNTs, but post-extravasation we observed as RGD-SWNTs eventually bound to individual tumor cells significantly more than RAD-SWNTs (p<0.0001) over time. RGD-SWNTs and RAD-SWNTs displayed similar signal in tumor for a week, but over time their curves significantly diverged (p<0.001) showing increasing RGD-SWNTs relative to untargeted SWNTs. We uncovered the complex spatiotemporal interplay between these competing uptake mechanisms. Specific uptake was delimited to early (1-6 hours) and late (1-4 weeks) time-points, while non-specific uptake dominated from 6 hours to 1 week. Our analysis revealed critical, quantitative insights into the dynamic, multifaceted mechanisms implicated in ligand-targeted SWNT accumulation in tumor using real-time observation.
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Affiliation(s)
- Bryan Ronain Smith
- 318 Campus Drive East, E-150, Department of Radiology, Molecular Imaging Program at Stanford, Stanford University, Stanford, CA 94305, USA
| | - Cristina Zavaleta
- 318 Campus Drive East, E-150, Department of Radiology, Molecular Imaging Program at Stanford, Stanford University, Stanford, CA 94305, USA
| | - Jarrett Rosenberg
- 318 Campus Drive East, E-150, Department of Radiology, Molecular Imaging Program at Stanford, Stanford University, Stanford, CA 94305, USA
| | - Ricky Tong
- 318 Campus Drive East, E-150, Department of Radiology, Molecular Imaging Program at Stanford, Stanford University, Stanford, CA 94305, USA
| | - John Ramunas
- Building 530, 440 Escondido Mall, Department of Mechanical Engineering, Stanford University, Stanford, CA 94305, USA
| | - Zhuang Liu
- William Keck Science Building, room 125, Department of Chemistry, Stanford University, Stanford, CA 94305, USA
| | - Hongjie Dai
- William Keck Science Building, room 125, Department of Chemistry, Stanford University, Stanford, CA 94305, USA
| | - Sanjiv Sam Gambhir
- 318 Campus Drive East, E-150, Department of Radiology, Molecular Imaging Program at Stanford, Stanford University, Stanford, CA 94305, USA
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Fernando LP, Kandel PK, Ackroyd PC, Christensen KA. The relative brightness of PEG lipid-conjugated polymer nanoparticles as fluid-phase markers in live cells. Anal Bioanal Chem 2012; 404:3003-14. [PMID: 23052882 PMCID: PMC3501596 DOI: 10.1007/s00216-012-6441-5] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2012] [Revised: 09/13/2012] [Accepted: 09/19/2012] [Indexed: 12/14/2022]
Abstract
While conjugated polymer nanoparticles (CPNs) have been widely touted as ultra-bright labels for biological imaging, no direct comparative measurements of their intracellular brightness have been reported. Simple in vitro comparisons are not definitive since fluorophore brightness in vitro may not correspond with intracellular brightness. We have compared the fluorescence brightness of J774A.1 cells loaded with 24 nm methoxy-capped 2,000 M(r) polyethylene glycol lipid PFBT nanoparticles (PEG lipid-PFBT CPNs) to cells loaded with carboxy-functionalized quantum dots (Qdots) or a dextran-linked small molecule organic dye, Alexa Fluor 488 dextran (AF488-dex). Under conditions likely to be used for biological imaging or flow cytometry, these CPNs are 175× brighter than Qdots and 1,400× brighter than AF488-dex in cells. Evaluation of the minimum incubation concentration required for detection of nanoparticle fluorescence with a commercial flow cytometer indicated that the limit of detection for PEG lipid-PFBT CPNs was 19 pM (86 ppb), substantially lower than values obtained for Qdots (980 pM) or AF488-dex (11.2 nM). Investigation of the mechanism of cellular uptake of the three fluid-phase labels indicates that these particles are passively taken into macrophage cells via macropinocytosis without interaction with cell surface receptors, and ultimately localize in lysosomes. In addition, no cytotoxicity could be observed at any of the CPN concentrations tested. Together, these data suggest that these CPNs are appropriate and attractive candidates as fluid-phase markers with significantly greater fluorescence brightness than existing dyes or nanoparticles. We expect that these CPNs will find application in both imaging and flow cytometry.
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Yan X, Zhou Y, Liu S. Optical imaging of tumors with copper-labeled rhodamine derivatives by targeting mitochondria. Theranostics 2012; 2:988-98. [PMID: 23139726 PMCID: PMC3493204 DOI: 10.7150/thno.4818] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2012] [Accepted: 08/21/2012] [Indexed: 11/22/2022] Open
Abstract
In this study, we evaluated Cu(L1) in two xenografted tumor-bearing (U87MG and MDA-MB-435) animal models to prove the concept that Cu(II)-labeled rhodamine derivatives, Cu(L) (L = L1 - L4) are useful as selective fluorescent probes for tumor imaging. We found that both multidrug resistance (MDR) negative U87MG gliomas and MDR-positive MDA-MB-435 breast tumors could be visualized. Because of tissue attenuation, accurate quantification of tumor uptake was difficult by optical methods. Therefore, 64Cu(L) (L = L1 - L4) were evaluated to compare their biodistribution properties. It was found that all four 64Cu radiotracers had a high glioma uptake (64Cu(L1): 5.71± 1.43 %ID/g; 64Cu(L2): 5.98 ± 2.75 %ID/g; 64Cu(L3): 4.28 ± 1.45 %ID/g; and 64Cu(L4): 6.25 ± 3.42 %ID/g) with 64Cu(L1) showing the highest tumor/background ratios. In athymic nude mice bearing MDA-MB-435 breast cancer xenografts, 64Cu(L4) showed almost identical normal organ uptake to that in the glioma-bearing animals, but its breast tumor uptake (1.26 ± 0.10% ID/g) was significantly lower (p < 0.001) than that in the glioma (6.25 ± 3.42% ID/g) because of MDR Pgps (P-glycoproteins) and MRPs (multidrug resistance-associated proteins) overexpressed in the xenografted MDA-MB-435 breast tumors. Results from cellular staining assays showed that both Cu(L2) and Cu(L4) were able to localize in mitochondria of U87MG cells, and their tumor selectivity was caused by the elevated negative mitochondrial potential in U87MG glioma cells as compared to that in human fibroblast cells. On the basis of these results, it was concluded that Cu(L) (L = L1 - L4) are useful as selective fluorescent probes for cellular staining assays and optical tumor imaging while 64Cu(L) (L = L1 - L4) have the potential as PET radiotracers for tumor imaging. This study represents a good example of dual modality imaging (PET and optical) using two agents, 64Cu(L) and Cu(L), with identical chemical composition. Future research will focus on developing new fluorescent probes with longer wavelength and reduced liver uptake.
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Image-enhanced laparoscopy: A promising technology for detection of peritoneal micrometastases. Surgery 2012; 151:345-50. [DOI: 10.1016/j.surg.2011.12.012] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2011] [Accepted: 12/09/2011] [Indexed: 01/09/2023]
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Chopra A, Shan L, Eckelman WC, Leung K, Latterner M, Bryant SH, Menkens A. Molecular Imaging and Contrast Agent Database (MICAD): evolution and progress. Mol Imaging Biol 2012; 14:4-13. [PMID: 21989943 PMCID: PMC3259264 DOI: 10.1007/s11307-011-0521-3] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
The purpose of writing this review is to showcase the Molecular Imaging and Contrast Agent Database (MICAD; www.micad.nlm.nih.gov ) to students, researchers, and clinical investigators interested in the different aspects of molecular imaging. This database provides freely accessible, current, online scientific information regarding molecular imaging (MI) probes and contrast agents (CA) used for positron emission tomography, single-photon emission computed tomography, magnetic resonance imaging, X-ray/computed tomography, optical imaging and ultrasound imaging. Detailed information on >1,000 agents in MICAD is provided in a chapter format and can be accessed through PubMed. Lists containing >4,250 unique MI probes and CAs published in peer-reviewed journals and agents approved by the United States Food and Drug Administration as well as a comma separated values file summarizing all chapters in the database can be downloaded from the MICAD homepage. Users can search for agents in MICAD on the basis of imaging modality, source of signal/contrast, agent or target category, pre-clinical or clinical studies, and text words. Chapters in MICAD describe the chemical characteristics (structures linked to PubChem), the in vitro and in vivo activities, and other relevant information regarding an imaging agent. All references in the chapters have links to PubMed. A Supplemental Information Section in each chapter is available to share unpublished information regarding an agent. A Guest Author Program is available to facilitate rapid expansion of the database. Members of the imaging community registered with MICAD periodically receive an e-mail announcement (eAnnouncement) that lists new chapters uploaded to the database. Users of MICAD are encouraged to provide feedback, comments, or suggestions for further improvement of the database by writing to the editors at micad@nlm.nih.gov.
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Affiliation(s)
- Arvind Chopra
- National Center of Biotechnology Information, National Library of Medicine, 8600 Rockville Pike, Bethesda, MD 20894, USA.
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Möller L, Krause A, Bartsch I, Kirschning A, Witte F, Dräger G. Preparation and In Vivo Imaging of Lucifer Yellow Tagged Hydrogels. ACTA ACUST UNITED AC 2011. [DOI: 10.1002/masy.201100045] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Napp J, Behnke T, Fischer L, Würth C, Wottawa M, Katschinski DM, Alves F, Resch-Genger U, Schäferling M. Targeted Luminescent Near-Infrared Polymer-Nanoprobes for In Vivo Imaging of Tumor Hypoxia. Anal Chem 2011; 83:9039-46. [DOI: 10.1021/ac201870b] [Citation(s) in RCA: 116] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Joanna Napp
- Department of Hematology and Oncology, University Medical Center Göttingen, Robert-Koch-Strasse 40, 37075 Göttingen, Germany
- Department of Molecular Biology of Neuronal Signals, Max-Planck-Institute for Experimental Medicine, Hermann-Rein-Strasse 3, 37075, Göttingen, Germany
| | - Thomas Behnke
- BAM Federal Institute for Materials Research and Testing, Richard-Willstaetter-Strasse, 11, 12489 Berlin, Germany
| | - Lorenz Fischer
- Institute of Analytical Chemistry, Chemo- and Biosensors, University of Regensburg, 93040 Regensburg, Germany
| | - Christian Würth
- BAM Federal Institute for Materials Research and Testing, Richard-Willstaetter-Strasse, 11, 12489 Berlin, Germany
| | - Marieke Wottawa
- Department of Cardiovascular Physiology, University Medical Center Göttingen, Humboldtallee 23, 37073 Göttingen, Germany
| | - Dörthe M. Katschinski
- Department of Cardiovascular Physiology, University Medical Center Göttingen, Humboldtallee 23, 37073 Göttingen, Germany
| | - Frauke Alves
- Department of Hematology and Oncology, University Medical Center Göttingen, Robert-Koch-Strasse 40, 37075 Göttingen, Germany
- Department of Molecular Biology of Neuronal Signals, Max-Planck-Institute for Experimental Medicine, Hermann-Rein-Strasse 3, 37075, Göttingen, Germany
| | - Ute Resch-Genger
- BAM Federal Institute for Materials Research and Testing, Richard-Willstaetter-Strasse, 11, 12489 Berlin, Germany
| | - Michael Schäferling
- Institute of Analytical Chemistry, Chemo- and Biosensors, University of Regensburg, 93040 Regensburg, Germany
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Hilbold B, Perrault M, Ehret C, Niu SL, Frisch B, Pécheur EI, Bourel-Bonnet L. Benzophenone-containing fatty acids and their related photosensitive fluorescent new probes: design, physico-chemical properties and preliminary functional investigations. Bioorg Med Chem 2011; 19:7464-73. [PMID: 22055711 DOI: 10.1016/j.bmc.2011.10.043] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2011] [Revised: 10/14/2011] [Accepted: 10/14/2011] [Indexed: 11/26/2022]
Abstract
Hydrophobic photoaffinity labeling is a powerful strategy to identify hydrophobic segments within molecules, in particular membrane proteins. Here we report the design and synthesis of a novel family of fluorescent and photosensitive lipid tools, which have a common amino acid scaffold functionalized by three groups: (i) a first fatty acid chain grafted with a photoactivatable benzophenone moiety (Fatty Acid BenzoPhenone, FABP), (ii) a second fatty acid chain to ensure anchoring into a half-bilayer or hydrophobic environment, and (iii) a fluorescent carboxytetramethylrhodamine headgroup (CTMR) to detect the photolabeled compound. We present data of the synthesis and characterization of three lipid tools whose benzophenone ring is situated at various distances from the central scaffold. We could therefore establish structure/properties relationships dependent upon the depth of insertion of benzophenone into the membrane. Our lipid tools were extensively characterized both physico- and bio-chemically, and we assessed their functionality in vitro using bacterioRhodopsin (bR). We thus provide the scientific community with novel and reliable tools for the identification and study of hydrophobic regions in proteins.
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Affiliation(s)
- Benoît Hilbold
- UMR 7199 CNRS/Université de Strasbourg, Equipe de Biovectorologie, Faculté de Pharmacie, 74 route du Rhin, 67401 Illkirch Cedex, France
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Berchel M, Haelters JP, Couthon-Gourvès H, Deschamps L, Midoux P, Lehn P, Jaffrès PA. Modular Construction of Fluorescent Lipophosphoramidates by Click Chemistry. European J Org Chem 2011. [DOI: 10.1002/ejoc.201100900] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Abstract
Alteration in mitochondrial transmembrane potential (ΔΨ(m)) is an important characteristic of cancer. The observation that the enhanced negative mitochondrial potential is prevalent in tumor cell phenotype provides a conceptual basis for development of mitochondrion-targeting therapeutic drugs and molecular imaging probes. Since plasma and mitochondrial potentials are negative, many delocalized organic cations, such as rhodamine-123 and (3)H-tetraphenylphosphonium, are electrophoretically driven through these membranes, and able to localize in the energized mitochondria of tumor cells. Cationic radiotracers, such as (99m)Tc-Sestamibi and (99m)Tc-Tetrofosmin, have been clinically used for diagnosis of cancer by single photon emission computed tomography (SPECT) and noninvasive monitoring of the multidrug resistance (MDR) transport function in tumors of different origin. However, their diagnostic and prognostic values are often limited due to their insufficient tumor localization (low radiotracer tumor uptake) and high radioactivity accumulation in the chest and abdominal regions (low tumor selectivity). In contrast, the (64)Cu-labeled phosphonium cations represent a new class of PET (positron emission tomography) radiotracers with good tumor uptake and high tumor selectivity. This review article will focus on our recent experiences in evaluation of (64)Cu-labeled phosphonium cations as potential PET radiotracers. The main objective is to illustrate the impact of radiometal chelate on physical, chemical, and biological properties of (64)Cu radiotracers. It will also discuss some important issues related to their tumor selectivity and possible tumor localization mechanism.
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Affiliation(s)
- Yang Zhou
- School of Health Sciences, Purdue University, 550 Stadium Mall Drive, West Lafayette, IN 47907, Phone: 765-494-0236
| | - Shuang Liu
- School of Health Sciences, Purdue University, 550 Stadium Mall Drive, West Lafayette, IN 47907, Phone: 765-494-0236
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Pauli J, Grabolle M, Brehm R, Spieles M, Hamann FM, Wenzel M, Hilger I, Resch-Genger U. Suitable Labels for Molecular Imaging – Influence of Dye Structure and Hydrophilicity on the Spectroscopic Properties of IgG Conjugates. Bioconjug Chem 2011; 22:1298-308. [DOI: 10.1021/bc1004763] [Citation(s) in RCA: 74] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Jutta Pauli
- BAM Bundesanstalt für Materialforschung und -prüfung, OE I.5, Richard-Willstaetter-Str. 11, D-12489 Berlin, Germany
| | - Markus Grabolle
- BAM Bundesanstalt für Materialforschung und -prüfung, OE I.5, Richard-Willstaetter-Str. 11, D-12489 Berlin, Germany
| | - Robert Brehm
- BAM Bundesanstalt für Materialforschung und -prüfung, OE I.5, Richard-Willstaetter-Str. 11, D-12489 Berlin, Germany
| | - Monika Spieles
- BAM Bundesanstalt für Materialforschung und -prüfung, OE I.5, Richard-Willstaetter-Str. 11, D-12489 Berlin, Germany
| | - Franziska M. Hamann
- Institut für Diagnostische und Interventionelle Radiologie des Klinikums der Friedrich-Schiller-Universität Jena (IDIR), Forschungszentrum Lobeda, Erlanger Allee 101, D-07747 Jena, Germany
| | | | - Ingrid Hilger
- Institut für Diagnostische und Interventionelle Radiologie des Klinikums der Friedrich-Schiller-Universität Jena (IDIR), Forschungszentrum Lobeda, Erlanger Allee 101, D-07747 Jena, Germany
| | - Ute Resch-Genger
- BAM Bundesanstalt für Materialforschung und -prüfung, OE I.5, Richard-Willstaetter-Str. 11, D-12489 Berlin, Germany
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Sun Z, Jin L, Shi W, Wei M, Evans DG, Duan X. Controllable photoluminescence properties of an anion-dye-intercalated layered double hydroxide by adjusting the confined environment. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2011; 27:7113-7120. [PMID: 21528866 DOI: 10.1021/la200846j] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
This article reports a novel method to tune the photoluminance properties of ammonium 1-anilinonaphthalene-8-sulfonate (ANS) in a 2D matrix of layered double hydroxide (LDH) by changing the interlayer microenvironment. ANS and a series of surfactants with different alkyl chain lengths (pentanesulphonate (PES), hexanesulphonate (HES), heptanesulphonate (HPS), decanesulphonate (DES), and dodecylsulphonate (DDS)) were respectively cointercalated into the galleries of ZnAl-LDH by the anion exchange method. Thin films of ANS/surfactant-LDHs obtained by the solvent evaporation method possess good c orientation as revealed by XRD and SEM. It was found that the ANS/HPS-LDH film showed the maximum fluorescence efficiency and the longest intensity-average lifetime among these ANS/surfactant-LDH composites owing to the "size-matching" rule between the organic dye and surfactant. Moreover, the fluorescence properties can be tuned by changing the relative molar ratio of ANS/HPS, and the film containing 20% ANS (molar percentage, expressed as ANS(20%)/HPS-LDH) exhibits the maximum fluorescence efficiency, the longest average lifetime, and significantly enhanced photo and thermal stability. In addition, the composite films show fluorescence anisotropy, attributed to the preferential orientation of ANS in the LDH gallery. Therefore, this work demonstrates a feasible approach to tuning the photoluminescence properties of a dye confined in an inorganic 2D matrix via changing the interlayer microenvironment, which may be considered to be a good candidate for solid photoluminescence materials, nonlinear optics, and polarized luminescence materials.
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Affiliation(s)
- Zhiyong Sun
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, PR China
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