1
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Boumelhem BB, Pilgrim C, Zwicker VE, Kolanowski JL, Yeo JH, Jolliffe KA, New EJ, Day ML, Assinder SJ, Fraser ST. Intracellular flow cytometric lipid analysis - a multiparametric system to assess distinct lipid classes in live cells. J Cell Sci 2021; 135:269116. [PMID: 34114626 DOI: 10.1242/jcs.258322] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2020] [Accepted: 05/28/2021] [Indexed: 11/20/2022] Open
Abstract
The lipid content of mammalian cells varies greatly between cell type. Current methods for analysing lipid components of cells are technically challenging and destructive. Here, we report a facile, inexpensive method to identify lipid content - intracellular flow cytometric lipid analysis (IFCLA). Distinct lipid classes can be distinguished by Nile Blue fluorescence, Nile Red fluorescence or violet autofluorescence. Nile Blue is fluorescent in the presence of unsaturated fatty acids with a carbon chain length greater than 16. Cis-configured fatty acids induce greater Nile Blue fluorescence than their trans-configured counterparts. In contrast, Nile Red exhibits greatest fluorescence in the presence of cholesterol, cholesteryl esters, some triglycerides and phospholipids. Multiparametric spanning-tree progression analysis for density-normalized events (SPADE) analysis of hepatic cellular lipid distribution, including vitamin A autofluorescence, is presented. This flow cytometric system allows for the rapid, inexpensive and non-destructive identification of lipid content, and highlights the differences in lipid biology between cell types by imaging and flow cytometry.
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Affiliation(s)
- Badwi B Boumelhem
- Discipline of Physiology, School of Medical Sciences, University of Sydney, Camperdown, NSW, 2050, Australia
| | - Chelsea Pilgrim
- Discipline of Physiology, School of Medical Sciences, University of Sydney, Camperdown, NSW, 2050, Australia
| | - Vincent E Zwicker
- School of Chemistry, University of Sydney, Camperdown, NSW, 2050, Australia
| | - Jacek L Kolanowski
- School of Chemistry, University of Sydney, Camperdown, NSW, 2050, Australia
| | - Jia Hao Yeo
- Discipline of Anatomy and Histology, School of Medical Sciences, University of Sydney, Camperdown, NSW, 2050, Australia
| | - Katrina A Jolliffe
- School of Chemistry, University of Sydney, Camperdown, NSW, 2050, Australia.,University of Sydney Nano Institute, University of Sydney, Camperdown, NSW, 2006, Australia
| | - Elizabeth J New
- School of Chemistry, University of Sydney, Camperdown, NSW, 2050, Australia.,University of Sydney Nano Institute, University of Sydney, Camperdown, NSW, 2006, Australia
| | - Margot L Day
- Discipline of Physiology, School of Medical Sciences, University of Sydney, Camperdown, NSW, 2050, Australia
| | - Stephen J Assinder
- Discipline of Physiology, School of Medical Sciences, University of Sydney, Camperdown, NSW, 2050, Australia.,University of Sydney Nano Institute, University of Sydney, Camperdown, NSW, 2006, Australia
| | - Stuart T Fraser
- Discipline of Physiology, School of Medical Sciences, University of Sydney, Camperdown, NSW, 2050, Australia.,Discipline of Anatomy and Histology, School of Medical Sciences, University of Sydney, Camperdown, NSW, 2050, Australia.,University of Sydney Nano Institute, University of Sydney, Camperdown, NSW, 2006, Australia.,School of Biomedical Engineering, University of Camperdown, NSW, 2006, Australia
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2
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Zarecki AP, Kolanowski JL, Markiewicz WT. Microwave-Assisted Catalytic Method for a Green Synthesis of Amides Directly from Amines and Carboxylic Acids. Molecules 2020; 25:molecules25081761. [PMID: 32290373 PMCID: PMC7221698 DOI: 10.3390/molecules25081761] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2020] [Revised: 04/07/2020] [Accepted: 04/09/2020] [Indexed: 01/30/2023] Open
Abstract
Amide bonds are among the most interesting and abundant molecules of life and products of the chemical pharmaceutical industry. In this work, we describe a method of the direct synthesis of amides from carboxylic acids and amines under solvent-free conditions using minute quantities of ceric ammonium nitrate (CAN) as a catalyst. The reactions are carried out in an open microwave reactor and allow the corresponding amides to be obtained in a fast and effective manner when compared to other procedures of the direct synthesis of amides from acids and amines reported so far in the literature. The amide product isolation procedure is simple, environmentally friendly, and is performed with no need for chromatographic purification of secondary amides due to high yields. In this report, primary amines were used in most examples. However, the developed procedure seems to be applicable for secondary amines as well. The methodology produces a limited amount of wastes, and a catalyst can be easily separated. This highly efficient, robust, rapid, solvent-free, and additional reagent-free method provides a major advancement in the development of an ideal green protocol for amide bond formation.
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Affiliation(s)
| | - Jacek L. Kolanowski
- Correspondence: (J.L.K.); (W.T.M.); Tel.: +48-61-852-85-03 (ext. 165) (J.L.K.); +48-61-852-85-03 (ext. 180) (W.T.M.)
| | - Wojciech T. Markiewicz
- Correspondence: (J.L.K.); (W.T.M.); Tel.: +48-61-852-85-03 (ext. 165) (J.L.K.); +48-61-852-85-03 (ext. 180) (W.T.M.)
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3
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Carney IJ, Kolanowski JL, Lim Z, Chekroun B, Torrisi AG, Hambley TW, New EJ. A ratiometric iron probe enables investigation of iron distribution within tumour spheroids. Metallomics 2019; 10:553-556. [PMID: 29658547 DOI: 10.1039/c7mt00297a] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Iron dysregulation is implicated in numerous diseases, and iron homeostasis is profoundly influenced by the labile iron pool (LIP). Tools to easily observe changes in the LIP are limited, with calcein AM-based assays most widely used. We describe here FlCFe1, a ratiometric analogue of calcein AM, which also provides the capacity for imaging iron in 3D cell models.
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Affiliation(s)
- Isaac J Carney
- School of Chemistry, The University of Sydney, NSW 2006, Australia.
| | | | - Zelong Lim
- School of Chemistry, The University of Sydney, NSW 2006, Australia.
| | | | - Angela G Torrisi
- School of Chemistry, The University of Sydney, NSW 2006, Australia.
| | - Trevor W Hambley
- School of Chemistry, The University of Sydney, NSW 2006, Australia.
| | - Elizabeth J New
- School of Chemistry, The University of Sydney, NSW 2006, Australia.
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4
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Hu M, Schulze KE, Ghildyal R, Henstridge DC, Kolanowski JL, New EJ, Hong Y, Hsu AC, Hansbro PM, Wark PA, Bogoyevitch MA, Jans DA. Respiratory syncytial virus co-opts host mitochondrial function to favour infectious virus production. eLife 2019; 8:42448. [PMID: 31246170 PMCID: PMC6598784 DOI: 10.7554/elife.42448] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2018] [Accepted: 06/10/2019] [Indexed: 12/15/2022] Open
Abstract
Although respiratory syncytial virus (RSV) is responsible for more human deaths each year than influenza, its pathogenic mechanisms are poorly understood. Here high-resolution quantitative imaging, bioenergetics measurements and mitochondrial membrane potential- and redox-sensitive dyes are used to define RSV’s impact on host mitochondria for the first time, delineating RSV-induced microtubule/dynein-dependent mitochondrial perinuclear clustering, and translocation towards the microtubule-organizing centre. These changes are concomitant with impaired mitochondrial respiration, loss of mitochondrial membrane potential and increased production of mitochondrial reactive oxygen species (ROS). Strikingly, agents that target microtubule integrity the dynein motor protein, or inhibit mitochondrial ROS production strongly suppresses RSV virus production, including in a mouse model with concomitantly reduced virus-induced lung inflammation. The results establish RSV’s unique ability to co-opt host cell mitochondria to facilitate viral infection, revealing the RSV-mitochondrial interface for the first time as a viable target for therapeutic intervention.
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Affiliation(s)
- MengJie Hu
- Department of Biochemistry and Molecular Biology, University of Melbourne, Melbourne, Australia.,Department of Biochemistry and Molecular Biology, Monash University, Melbourne, Australia
| | - Keith E Schulze
- Monash Micro Imaging, Monash University, Melbourne, Australia
| | - Reena Ghildyal
- Centre for Research in Therapeutic Solutions, Faculty of Science and Technology, University of Canberra, Canberra, Australia
| | | | | | - Elizabeth J New
- School of Chemistry, The University of Sydney, Sydney, Australia
| | - Yuning Hong
- Department of Chemistry and Physics, La Trobe Institute for Molecular Science, La Trobe University, Melbourne, Australia
| | - Alan C Hsu
- Priority Research Centre for Healthy Lungs, Hunter Medical Research Institute (HMRI) and School of Biomedical Sciences and Pharmacy, University of Newcastle, Newcastle, Australia
| | - Philip M Hansbro
- Priority Research Centre for Healthy Lungs, Hunter Medical Research Institute (HMRI) and School of Biomedical Sciences and Pharmacy, University of Newcastle, Newcastle, Australia
| | - Peter Ab Wark
- Priority Research Centre for Healthy Lungs, Hunter Medical Research Institute (HMRI) and School of Biomedical Sciences and Pharmacy, University of Newcastle, Newcastle, Australia
| | - Marie A Bogoyevitch
- Department of Biochemistry and Molecular Biology, University of Melbourne, Melbourne, Australia
| | - David A Jans
- Department of Biochemistry and Molecular Biology, Monash University, Melbourne, Australia
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5
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Ozumerzifon TJ, Higgins RF, Joyce JP, Kolanowski JL, Rappé AK, Shores MP. Evidence for Reagent-Induced Spin-State Switching in Tripodal Fe(II) Iminopyridine Complexes. Inorg Chem 2019; 58:7785-7793. [DOI: 10.1021/acs.inorgchem.9b00340] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Tarik J. Ozumerzifon
- Department of Chemistry, Colorado State University, Fort Collins, Colorado 80523, United States
| | - Robert F. Higgins
- Department of Chemistry, Colorado State University, Fort Collins, Colorado 80523, United States
| | - Justin P. Joyce
- Department of Chemistry, Colorado State University, Fort Collins, Colorado 80523, United States
| | - Jacek L. Kolanowski
- Institute of Bioorganic Chemistry, Polish Academy of Sciences, Noskowskiego 12/14, 61-704 Poznań, Poland
| | - Anthony K. Rappé
- Department of Chemistry, Colorado State University, Fort Collins, Colorado 80523, United States
| | - Matthew P. Shores
- Department of Chemistry, Colorado State University, Fort Collins, Colorado 80523, United States
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6
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Brennecke P, Rasina D, Aubi O, Herzog K, Landskron J, Cautain B, Vicente F, Quintana J, Mestres J, Stechmann B, Ellinger B, Brea J, Kolanowski JL, Pilarski R, Orzaez M, Pineda-Lucena A, Laraia L, Nami F, Zielenkiewicz P, Paruch K, Hansen E, von Kries JP, Neuenschwander M, Specker E, Bartunek P, Simova S, Leśnikowski Z, Krauss S, Lehtiö L, Bilitewski U, Brönstrup M, Taskén K, Jirgensons A, Lickert H, Clausen MH, Andersen JH, Vicent MJ, Genilloud O, Martinez A, Nazaré M, Fecke W, Gribbon P. EU-OPENSCREEN: A Novel Collaborative Approach to Facilitate Chemical Biology. SLAS Discov 2019; 24:398-413. [PMID: 30616481 PMCID: PMC6764006 DOI: 10.1177/2472555218816276] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/01/2018] [Revised: 10/11/2018] [Accepted: 11/08/2018] [Indexed: 12/27/2022]
Abstract
Compound screening in biological assays and subsequent optimization of hits is indispensable for the development of new molecular research tools and drug candidates. To facilitate such discoveries, the European Research Infrastructure EU-OPENSCREEN was founded recently with the support of its member countries and the European Commission. Its distributed character harnesses complementary knowledge, expertise, and instrumentation in the discipline of chemical biology from 20 European partners, and its open working model ensures that academia and industry can readily access EU-OPENSCREEN's compound collection, equipment, and generated data. To demonstrate the power of this collaborative approach, this perspective article highlights recent projects from EU-OPENSCREEN partner institutions. These studies yielded (1) 2-aminoquinazolin-4(3 H)-ones as potential lead structures for new antimalarial drugs, (2) a novel lipodepsipeptide specifically inducing apoptosis in cells deficient for the pVHL tumor suppressor, (3) small-molecule-based ROCK inhibitors that induce definitive endoderm formation and can potentially be used for regenerative medicine, (4) potential pharmacological chaperones for inborn errors of metabolism and a familiar form of acute myeloid leukemia (AML), and (5) novel tankyrase inhibitors that entered a lead-to-candidate program. Collectively, these findings highlight the benefits of small-molecule screening, the plethora of assay designs, and the close connection between screening and medicinal chemistry within EU-OPENSCREEN.
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Affiliation(s)
- Philip Brennecke
- EU-OPENSCREEN, Leibniz Research
Institute for Molecular Pharmacology, Berlin, Germany
| | - Dace Rasina
- Organic Synthesis Methodology Group,
Latvian Institute of Organic Synthesis, Riga, Latvia
| | - Oscar Aubi
- Department of Biomedicine, University of
Bergen, Bergen, Norway
| | - Katja Herzog
- EU-OPENSCREEN, Leibniz Research
Institute for Molecular Pharmacology, Berlin, Germany
| | - Johannes Landskron
- Centre for Molecular Medicine
Norway–Nordic EMBL Partnership, University of Oslo, Oslo, Norway
| | - Bastien Cautain
- Fundación MEDINA, Health Sciences
Technology Park, Granada, Spain
| | | | - Jordi Quintana
- Department of Experimental and Health
Sciences, Universitat Pompeu Fabra, Barcelona, Catalunya, Spain
| | - Jordi Mestres
- Department of Experimental and Health
Sciences, Universitat Pompeu Fabra, Barcelona, Catalunya, Spain
- IMIM Hospital del Mar Medical Research
Institute, Research Program on Biomedical Informatics (GRIB), Barcelona, Spain
| | - Bahne Stechmann
- EU-OPENSCREEN, Leibniz Research
Institute for Molecular Pharmacology, Berlin, Germany
| | - Bernhard Ellinger
- Fraunhofer Institute for Molecular
Biology and Applied Ecology IME, Screening Port, Hamburg, Germany
| | - Jose Brea
- Institute for Research in Molecular
Medicine and Chronic Diseases—BioFarma Research Group, University of Santiago de
Compostela, Santiago de Compostela, Spain
| | - Jacek L. Kolanowski
- Department of Molecular Probes and
Prodrugs, Institute of Bioorganic Chemistry—Polish Academy of Sciences, Poznan,
Poland
| | - Radosław Pilarski
- Department of Molecular Probes and
Prodrugs, Institute of Bioorganic Chemistry—Polish Academy of Sciences, Poznan,
Poland
| | - Mar Orzaez
- Screening Platform, Principe Felipe
Research Center, Valencia, Spain
| | | | - Luca Laraia
- Center for Nanomedicine and
Theranostics, Department of Chemistry, Technical University of Denmark, Lyngby,
Denmark
- Technical University of Denmark,
DK-OPENSCREEN, Lyngby, Denmark
| | - Faranak Nami
- Center for Nanomedicine and
Theranostics, Department of Chemistry, Technical University of Denmark, Lyngby,
Denmark
- Technical University of Denmark,
DK-OPENSCREEN, Lyngby, Denmark
| | - Piotr Zielenkiewicz
- Department of Bioinformatics,
Institute of Biochemistry and Biophysics—Polish Academy of Sciences, Warsaw,
Poland
| | - Kamil Paruch
- Department of Chemistry—CZ-OPENSCREEN,
Masaryk University, Brno, Czech Republic
| | - Espen Hansen
- The Arctic University of Norway,
University of Tromsø, Marbio, Tromsø, Norway
| | - Jens P. von Kries
- Screening Unit, Leibniz Research
Institute for Molecular Pharmacology, Berlin, Germany
| | - Martin Neuenschwander
- Screening Unit, Leibniz Research
Institute for Molecular Pharmacology, Berlin, Germany
| | - Edgar Specker
- Medicinal Chemistry Research Group,
Leibniz Research Institute for Molecular Pharmacology, Berlin, Germany
| | - Petr Bartunek
- Institute of Molecular Genetics of the
ASCR, CZ-OPENSCREEN, Prague, Czech Republic
| | - Sarka Simova
- Institute of Molecular Genetics of the
ASCR, CZ-OPENSCREEN, Prague, Czech Republic
| | - Zbigniew Leśnikowski
- Laboratory of Molecular Virology and
Biological Chemistry, Institute of Medical Biology—Polish Academy of Sciences, Łódź,
Poland
| | - Stefan Krauss
- Department of Immunology and
Transfusion Medicine, Oslo University Hospital, Oslo, Norway
- Hybrid Technology Hub—Centre of
Excellence—Institute of Basic Medical Sciences, University of Oslo, Oslo,
Norway
| | - Lari Lehtiö
- Faculty of Biochemistry and Molecular
Medicine—Biocenter Oulu, University of Oulu, Oulu, Finland
| | - Ursula Bilitewski
- Working Group Compound Profiling and
Screening, Helmholtz Centre for Infection Research, Brunswick, Germany
| | - Mark Brönstrup
- Department of Chemical Biology,
Helmholtz Centre for Infection Research, Brunswick, Germany
- German Center for Infection Research
(DZIF), partner site Hannover-Brunswick, Brunswick, Germany
| | - Kjetil Taskén
- Centre for Molecular Medicine
Norway–Nordic EMBL Partnership, University of Oslo, Oslo, Norway
- Department of Cancer
Immunology—Institute for Cancer Research, Oslo University Hospital, Oslo,
Norway
- K.G. Jebsen Centre for Cancer
Immunotherapy—Institute of Clinical Medicine, University of Oslo, Oslo, Norway
- K.G. Jebsen Centre for B Cell
Malignancies—Institute of Clinical Medicine, University of Oslo, Oslo, Norway
| | - Aigars Jirgensons
- Organic Synthesis Methodology Group,
Latvian Institute of Organic Synthesis, Riga, Latvia
| | - Heiko Lickert
- Institute of Diabetes and Regeneration
Research, Helmholtz Centre Munich German Research Center for Environmental Health,
Neuherberg, Germany
| | - Mads H. Clausen
- Center for Nanomedicine and
Theranostics, Department of Chemistry, Technical University of Denmark, Lyngby,
Denmark
- Technical University of Denmark,
DK-OPENSCREEN, Lyngby, Denmark
| | | | - Maria J. Vicent
- Screening Platform, Principe Felipe
Research Center, Valencia, Spain
| | - Olga Genilloud
- Fundación MEDINA, Health Sciences
Technology Park, Granada, Spain
| | - Aurora Martinez
- Department of Biomedicine, University of
Bergen, Bergen, Norway
| | - Marc Nazaré
- Medicinal Chemistry Research Group,
Leibniz Research Institute for Molecular Pharmacology, Berlin, Germany
| | | | - Philip Gribbon
- Fraunhofer Institute for Molecular
Biology and Applied Ecology IME, Screening Port, Hamburg, Germany
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7
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Leslie KG, Kolanowski JL, Trinh N, Carrara S, Anscomb MD, Yang K, Hogan CF, Jolliffe KA, New EJ. Nicotinamide-Appended Fluorophores as Fluorescent Redox Sensors. Aust J Chem 2019. [DOI: 10.1071/ch19398] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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8
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Harris M, Kolanowski JL, O'Neill ES, Henoumont C, Laurent S, Parac-Vogt TN, New EJ. Drawing on biology to inspire molecular design: a redox-responsive MRI probe based on Gd(iii)-nicotinamide. Chem Commun (Camb) 2018; 54:12986-12989. [PMID: 30387480 DOI: 10.1039/c8cc07092j] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
A novel, reversible redox-active MRI probe, GdNR1, has been developed for the study of redox changes associated with diseased states. This system exhibits switching in relaxivity upon reduction and oxidation of the appended nicotinimidium. Relaxivity studies and cyclic voltammetry confirmed the impressive reversibility of this system, at a biologically-relevant reduction potential. A 2.5-fold increase in relaxivity was observed upon reduction of the complex, which corresponds to a change in the number of inner-sphere water molecules, as confirmed by luminescence lifetimes of the Eu(iii) analogue and NMRD studies. This is the first example of a redox-responsive MRI probe utilising the biologically-inspired nicotinimidium redox switch. In the future this strategy could enable the non-invasive identification of hypoxic tissue and related cardiovascular disease.
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Affiliation(s)
- Michael Harris
- Department of Chemistry, KU Leuven, Celestijnlaan 200F, Heverlee 3001, Belgium
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9
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Chong KL, Chalmers BA, Cullen JK, Kaur A, Kolanowski JL, Morrow BJ, Fairfull-Smith KE, Lavin MJ, Barnett NL, New EJ, Murphy MP, Bottle SE. Pro-fluorescent mitochondria-targeted real-time responsive redox probes synthesised from carboxy isoindoline nitroxides: Sensitive probes of mitochondrial redox status in cells. Free Radic Biol Med 2018; 128:97-110. [PMID: 29567391 DOI: 10.1016/j.freeradbiomed.2018.03.008] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/29/2017] [Revised: 02/12/2018] [Accepted: 03/06/2018] [Indexed: 11/28/2022]
Abstract
Here we describe new fluorescent probes based on fluorescein and rhodamine that provide reversible, real-time insight into cellular redox status. The new probes incorporate bio-imaging relevant fluorophores derived from fluorescein and rhodamine linked with stable nitroxide radicals such that they cannot be cleaved, either spontaneously or enzymatically by cellular processes. Overall fluorescence emission is determined by reversible reduction and oxidation, hence the steady state emission intensity reflects the balance between redox potentials of critical redox couples within the cell. The permanent positive charge on the rhodamine-based probes leads to their rapid localisation within mitochondria in cells. Reduction and oxidation also leads to marked changes in the fluorophore lifetime, enabling monitoring by fluorescence lifetime imaging microscopy. Finally, we demonstrate that administration of a methyl ester version of the rhodamine-based probe can be used at concentrations as low as 5 nM to generate a readily detected response to redox stress within cells as analysed by flow cytometry.
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Affiliation(s)
- Kok Leong Chong
- ARC Centre of Excellence for Free Radical Chemistry, Faculty of Science and Engineering, Queensland University of Technology (QUT), Brisbane, Queensland, Australia
| | - Benjamin A Chalmers
- ARC Centre of Excellence for Free Radical Chemistry, Faculty of Science and Engineering, Queensland University of Technology (QUT), Brisbane, Queensland, Australia
| | - Jason K Cullen
- Cell and Molecular Biology, Queensland Institute of Medical Research, Brisbane, Australia
| | - Amandeep Kaur
- School of Chemistry, University of Sydney, Australia
| | | | - Benjamin J Morrow
- ARC Centre of Excellence for Free Radical Chemistry, Faculty of Science and Engineering, Queensland University of Technology (QUT), Brisbane, Queensland, Australia
| | - Kathryn E Fairfull-Smith
- ARC Centre of Excellence for Free Radical Chemistry, Faculty of Science and Engineering, Queensland University of Technology (QUT), Brisbane, Queensland, Australia
| | - Martin J Lavin
- Cell and Molecular Biology, Queensland Institute of Medical Research, Brisbane, Australia; University of Queensland, Centre for Clinical Research, Brisbane, Australia
| | | | | | - Michael P Murphy
- MRC Mitochondrial Biology Unit, University of Cambridge, Cambridge CB2 0XY, UK
| | - Steven E Bottle
- ARC Centre of Excellence for Free Radical Chemistry, Faculty of Science and Engineering, Queensland University of Technology (QUT), Brisbane, Queensland, Australia.
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10
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Lim Z, Smith DG, Kolanowski JL, Mattison RL, Knowles JC, Baek SY, Chrzanowski W, New EJ. A reversible fluorescent probe for monitoring Ag(I) ions. J R Soc Interface 2018; 15:20180346. [PMID: 30021927 PMCID: PMC6073652 DOI: 10.1098/rsif.2018.0346] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2018] [Accepted: 06/22/2018] [Indexed: 01/21/2023] Open
Abstract
Silver-containing nanomaterials are of interest for their antibiotic properties, for a wide range of applications from medicine to consumer products. However, much remains to be learnt about the degradation of such materials and their effects on human health. While most analyses involve measurement of total silver levels, it is important also to be able to measure concentrations of active free Ag(I) ions. We report here the preparation of a coumarin-based probe, thiocoumarin silver sensor 1 (TcAg1), that responds reversibly to the addition of silver ions through the appearance of a new fluorescence emission peak at 565 nm. Importantly, this peak is not observed in the presence of Hg(II), a common interferent in Ag(I) sensing. To establish the utility of this sensor, we prepared silver-doped phosphate glasses with demonstrated bactericidal properties, and observed the Ag(I) release from these glasses in solutions of different ionic strength. TcAg1 is therefore a useful tool for the study of the environmental and medical effects of silver-containing materials.
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Affiliation(s)
- Zelong Lim
- School of Chemistry, The University of Sydney, Sydney, New South Wales 2006, Australia
| | - David G Smith
- School of Chemistry, The University of Sydney, Sydney, New South Wales 2006, Australia
| | - Jacek L Kolanowski
- School of Chemistry, The University of Sydney, Sydney, New South Wales 2006, Australia
| | - Rebecca L Mattison
- School of Chemistry, The University of Sydney, Sydney, New South Wales 2006, Australia
| | - Jonathan C Knowles
- Division of Biomaterials and Tissue Engineering, University College London Eastman Dental Institute, London WC1X 8LD, UK
- The Discoveries Centre for Regenerative and Precision Medicine, UCL Campus, London, UK
- Department of Nanobiomedical Science and BK21 Plus NBM Global Research Center for Regenerative Medicine, Dankook University, Cheonan, Korea
| | - Song-Yi Baek
- Division of Biomaterials and Tissue Engineering, University College London Eastman Dental Institute, London WC1X 8LD, UK
| | - Wojciech Chrzanowski
- The University of Sydney School of Pharmacy, Sydney, New South Wales 2006, Australia
- The University of Sydney Nano Institute, The University of Sydney, Sydney, New South Wales 2006, Australia
| | - Elizabeth J New
- School of Chemistry, The University of Sydney, Sydney, New South Wales 2006, Australia
- The University of Sydney Nano Institute, The University of Sydney, Sydney, New South Wales 2006, Australia
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11
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Abstract
This review identifies and discusses fluorescent sensors that are capable of simultaneously reporting on the presence of two analytes for biological application.
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Affiliation(s)
- Jacek L. Kolanowski
- School of Chemistry
- The University of Sydney
- Australia
- Institute of Bio-organic Chemistry
- Polish Academy of Sciences
| | - Fei Liu
- State Key Laboratory of Applied Microbiology Southern China
- Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application
- Guangdong Institute of Microbiology
- Guangdong
- People's Republic of China
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12
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Wright PJ, Kolanowski JL, Filipek WK, Lim Z, Moore EG, Stagni S, New EJ, Massi M. Versatility of Terpyridine‐Functionalised Aryl Tetrazoles: Photophysical Properties, Ratiometric Sensing of Zinc Cations and Sensitisation of Lanthanide Luminescence. Eur J Inorg Chem 2017. [DOI: 10.1002/ejic.201700663] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- Phillip J. Wright
- Curtin Institute of Functional Materials and Interfaces, Department of Chemistry Curtin University 6102 Perth WA Australia
| | | | | | - Zelong Lim
- School of Chemistry The University of Sydney 2006 Camperdown NSW Australia
| | - Evan G. Moore
- School of Chemistry and Molecular Biosciences University of Queensland 4072 Brisbane QLD Australia
| | - Stefano Stagni
- Department of Industrial Chemistry “Toso Montanari” University of Bologna 40136 Bologna Italy
| | - Elizabeth J. New
- School of Chemistry The University of Sydney 2006 Camperdown NSW Australia
| | - Massimiliano Massi
- Curtin Institute of Functional Materials and Interfaces, Department of Chemistry Curtin University 6102 Perth WA Australia
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13
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Wu A, Kolanowski JL, Boumelhem BB, Yang K, Lee R, Kaur A, Fraser ST, New EJ, Rendina LM. A Carborane-Containing Fluorophore as a Stain of Cellular Lipid Droplets. Chem Asian J 2017. [PMID: 28640518 DOI: 10.1002/asia.201700423] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
The use of fluorescent markers and probes greatly enhances biological investigations but relies on the provision of an array of fluorophores with diverse properties. Herein we report a novel carborane-containing coumarin, 5, which is sufficiently lipophilic to localise in cellular lipid droplets. In non-polar solvents which show comparable polarities to those of a lipid environment, compound 5 exhibits a fluorescence quantum yield two orders of magnitude greater than found in aqueous solvents, adding a further degree of selectivity to lipid droplet imaging. Compound 5 can stain lipid droplets in ex vivo adipocytes as well as in cultured cells, and can be utilised in flow cytometry as well as confocal microscopy.
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Affiliation(s)
- Andrew Wu
- School of Chemistry, The University of Sydney, Sydney, NSW, 2006, Australia
| | - Jacek L Kolanowski
- School of Chemistry, The University of Sydney, Sydney, NSW, 2006, Australia
| | - Badwi B Boumelhem
- Discipline of Physiology, School of Medical Sciences, The University of Sydney, Sydney, NSW, 2006, Australia
| | - Kylie Yang
- School of Chemistry, The University of Sydney, Sydney, NSW, 2006, Australia
| | - Rebecca Lee
- School of Chemistry, The University of Sydney, Sydney, NSW, 2006, Australia
| | - Amandeep Kaur
- School of Chemistry, The University of Sydney, Sydney, NSW, 2006, Australia
| | - Stuart T Fraser
- Discipline of Physiology, School of Medical Sciences, The University of Sydney, Sydney, NSW, 2006, Australia
| | - Elizabeth J New
- School of Chemistry, The University of Sydney, Sydney, NSW, 2006, Australia
| | - Louis M Rendina
- School of Chemistry, The University of Sydney, Sydney, NSW, 2006, Australia
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14
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Abstract
The balance of oxidants and antioxidants within the cell is crucial for maintaining health, and regulating physiological processes such as signalling. Consequently, imbalances between oxidants and antioxidants are now understood to lead to oxidative stress, a physiological feature that underlies many diseases. These processes have spurred the field of chemical biology to develop a plethora of sensors, both small-molecule and fluorescent protein-based, for the detection of specific oxidizing species and general redox balances within cells. The mitochondrion, in particular, is the site of many vital redox reactions. There is therefore a need to target redox sensors to this particular organelle. It has been well established that targeting mitochondria can be achieved by the use of a lipophilic cation-targeting group, or by utilizing natural peptidic mitochondrial localization sequences. Here, we review how these two approaches have been used by a number of researchers to develop mitochondrially localized fluorescent redox sensors that are already proving useful in providing insights into the roles of reactive oxygen species in the mitochondria.
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Affiliation(s)
| | | | - Elizabeth J. New
- School of Chemistry, The University of Sydney, New South Wales 2006, Australia
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15
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Shen C, Kolanowski JL, Tran CMN, Kaur A, Akerfeldt MC, Rahme MS, Hambley TW, New EJ. A ratiometric fluorescent sensor for the mitochondrial copper pool. Metallomics 2016; 8:915-9. [PMID: 27550322 DOI: 10.1039/c6mt00083e] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Copper plays a key role in the modulation of cellular function, defence, and growth. Here we present InCCu1, a ratiometric fluorescent sensor for mitochondrial copper, which changes from red to blue emission in the presence of Cu(i). Employing this probe in microscopy and flow cytometry, we show that cisplatin-treated cells have an impaired ability to accumulate copper in the mitochondria.
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Affiliation(s)
- Clara Shen
- School of Chemistry, The University of Sydney, NSW 2006, Australia.
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16
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Abstract
SIGNIFICANCE Recent research has identified key roles for reactive oxygen species (ROS)/reactive nitrogen species (RNS) in redox signaling, but much remains to be uncovered. Molecular imaging tools to study these processes must not only be selective to enable identification of the ROS/RNS involved but also reversible to distinguish signaling processes from oxidative stress. Fluorescent sensors offer the potential to image such processes with high spatial and temporal resolution. RECENT ADVANCES A broad array of strategies has been developed that enable the selective sensing of ROS/RNS. More recently, attention has turned to the design of reversible small-molecule sensors of global redox state, with a further set of probes capable of reversible sensing of individual ROS/RNS. CRITICAL ISSUES In this study, we discuss the key challenges in achieving simultaneous detection of reversible oxidative bursts with unambiguous determination of a particular ROS/RNS. FUTURE DIRECTIONS We have highlighted key design features of small-molecule probes that show promise in enabling the study of redox signaling, identifying essential parameters that must be assessed for any new probe. Antioxid. Redox Signal. 24, 713-730.
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Affiliation(s)
- Jacek L Kolanowski
- School of Chemistry, The University of Sydney , Sydney, New South Wales, Australia
| | - Amandeep Kaur
- School of Chemistry, The University of Sydney , Sydney, New South Wales, Australia
| | - Elizabeth J New
- School of Chemistry, The University of Sydney , Sydney, New South Wales, Australia
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17
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Affiliation(s)
- Amandeep Kaur
- School of Chemistry; The University of Sydney; NSW 2006 Australia
| | | | - Elizabeth J. New
- School of Chemistry; The University of Sydney; NSW 2006 Australia
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18
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Affiliation(s)
- Amandeep Kaur
- School of Chemistry; The University of Sydney; NSW 2006 Australia
| | | | - Elizabeth J. New
- School of Chemistry; The University of Sydney; NSW 2006 Australia
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