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Lee LCC, Lo KKW. Shining New Light on Biological Systems: Luminescent Transition Metal Complexes for Bioimaging and Biosensing Applications. Chem Rev 2024. [PMID: 39052606 DOI: 10.1021/acs.chemrev.3c00629] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/27/2024]
Abstract
Luminescence imaging is a powerful and versatile technique for investigating cell physiology and pathology in living systems, making significant contributions to life science research and clinical diagnosis. In recent years, luminescent transition metal complexes have gained significant attention for diagnostic and therapeutic applications due to their unique photophysical and photochemical properties. In this Review, we provide a comprehensive overview of the recent development of luminescent transition metal complexes for bioimaging and biosensing applications, with a focus on transition metal centers with a d6, d8, and d10 electronic configuration. We elucidate the structure-property relationships of luminescent transition metal complexes, exploring how their structural characteristics can be manipulated to control their biological behavior such as cellular uptake, localization, biocompatibility, pharmacokinetics, and biodistribution. Furthermore, we introduce the various design strategies that leverage the interesting photophysical properties of luminescent transition metal complexes for a wide variety of biological applications, including autofluorescence-free imaging, multimodal imaging, organelle imaging, biological sensing, microenvironment monitoring, bioorthogonal labeling, bacterial imaging, and cell viability assessment. Finally, we provide insights into the challenges and perspectives of luminescent transition metal complexes for bioimaging and biosensing applications, as well as their use in disease diagnosis and treatment evaluation.
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Affiliation(s)
- Lawrence Cho-Cheung Lee
- Department of Chemistry, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong, P. R. China
- Laboratory for Synthetic Chemistry and Chemical Biology Limited, Units 1503-1511, 15/F, Building 17W, Hong Kong Science Park, New Territories, Hong Kong, P. R. China
| | - Kenneth Kam-Wing Lo
- Department of Chemistry, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong, P. R. China
- State Key Laboratory of Terahertz and Millimeter Waves, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong, P. R. China
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2
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Fluorescence and phosphorescence lifetime imaging reveals a significant cell nuclear viscosity and refractive index changes upon DNA damage. Sci Rep 2023; 13:422. [PMID: 36624137 PMCID: PMC9829731 DOI: 10.1038/s41598-022-26880-x] [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: 09/26/2022] [Accepted: 12/20/2022] [Indexed: 01/11/2023] Open
Abstract
Cytoplasmic viscosity is a crucial parameter in determining rates of diffusion-limited reactions. Changes in viscosity are associated with several diseases, whilst nuclear viscosity determines gene integrity, regulation and expression. Yet how drugs including DNA-damaging agents affect viscosity is unknown. We demonstrate the use of a platinum complex, Pt[L]Cl, that localizes efficiently mostly in the nucleus as a probe for nuclear viscosity. The phosphorescence lifetime of Pt[L]Cl is sensitive to viscosity and provides an excellent tool to investigate the impact of DNA damage. We show using Fluorescence Lifetime Imaging (FLIM) that the lifetime of both green and red fluorescent proteins (FP) are also sensitive to changes in cellular viscosity and refractive index. However, Pt[L]Cl proved to be a more sensitive viscosity probe, by virtue of microsecond phosphorescence lifetime versus nanosecond fluorescence lifetime of FP, hence greater sensitivity to bimolecular reactions. DNA damage was inflicted by either a two-photon excitation, one-photon excitation microbeam and X-rays. DNA damage of live cells causes significant increase in the lifetime of either Pt[L]Cl (HeLa cells, 12.5-14.1 µs) or intracellularly expressed mCherry (HEK293 cells, 1.54-1.67 ns), but a decrease in fluorescence lifetime of GFP from 2.65 to 2.29 ns (in V15B cells). These values represent a viscosity change from 8.59 to 20.56 cP as well as significant changes in the refractive index (RI), according to independent calibration. Interestingly DNA damage localized to a submicron region following a laser microbeam induction showed a whole cell viscosity change, with those in the nucleus being greater than the cytoplasm. We also found evidence of a by-stander effect, whereby adjacent un-irradiated cells also showed nuclear viscosity change. Finally, an increase in viscosity following DNA damage was also observed in bacterial cells with an over-expressed mNeonGreen FP, evidenced by the change in its lifetime from 2.8 to 2.4 ns.
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3
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A Novel Class of Cyclometalated Platinum(II) Complexes for Solution-Processable OLEDs. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27165171. [PMID: 36014412 PMCID: PMC9412278 DOI: 10.3390/molecules27165171] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/25/2022] [Revised: 08/10/2022] [Accepted: 08/11/2022] [Indexed: 11/16/2022]
Abstract
Substitution of the chlorido ligand of cyclometalated [Pt (5-R-1,3-di(2-pyridyl) benzene)Cl] (R = methyl, mesityl, 2-thienyl, or 4-diphenylamino-phenyl) by 4-phenylthiazole-2-thiolate leads to related thiolato complexes, which were fully characterized. Their photophysical properties were determined in degassed dichloromethane solution. The emission color of the novel complexes can be easily tuned by the nature of the substituents on the terdentate ligand, as is the case for the parent chlorido complexes. Their luminescence Quantum Yield is high, with that of the compounds with the 2-thienyl or 4-diphenylamino-phenyl substituents being much higher than that of the related chloride complexes. The platinum complex with the cyclometalated 5-(2-thienyl)-1,3-di(2-pyridyl) benzene was used as the emitter for the fabrication of a yellow solution-processable OLED.
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4
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De Soricellis G, Fagnani F, Colombo A, Dragonetti C, Roberto D. Exploring the potential of N^C^N cyclometalated Pt(II) complexes bearing 1,3-di(2-pyridyl)benzene derivatives for imaging and photodynamic therapy. Inorganica Chim Acta 2022. [DOI: 10.1016/j.ica.2022.121082] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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5
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Metal Peptide Conjugates in Cell and Tissue Imaging and Biosensing. Top Curr Chem (Cham) 2022; 380:30. [PMID: 35701677 PMCID: PMC9197911 DOI: 10.1007/s41061-022-00384-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2021] [Accepted: 05/10/2022] [Indexed: 11/05/2022]
Abstract
Metal complex luminophores have seen dramatic expansion in application as imaging probes over the past decade. This has been enabled by growing understanding of methods to promote their cell permeation and intracellular targeting. Amongst the successful approaches that have been applied in this regard is peptide-facilitated delivery. Cell-permeating or signal peptides can be readily conjugated to metal complex luminophores and have shown excellent response in carrying such cargo through the cell membrane. In this article, we describe the rationale behind applying metal complexes as probes and sensors in cell imaging and outline the advantages to be gained by applying peptides as the carrier for complex luminophores. We describe some of the progress that has been made in applying peptides in metal complex peptide-driven conjugates as a strategy for cell permeation and targeting of transition metal luminophores. Finally, we provide key examples of their application and outline areas for future progress.
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6
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Wu C, Kisel KS, Thangavel MK, Chen Y, Chang K, Tsai M, Chu C, Shen Y, Wu P, Zhang Z, Liu T, Jänis J, Grachova EV, Shakirova JR, Tunik SP, Koshevoy IO, Chou P. Functionalizing Collagen with Vessel-Penetrating Two-Photon Phosphorescence Probes: A New In Vivo Strategy to Map Oxygen Concentration in Tumor Microenvironment and Tissue Ischemia. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2021; 8:e2102788. [PMID: 34414696 PMCID: PMC8529487 DOI: 10.1002/advs.202102788] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/01/2021] [Indexed: 06/13/2023]
Abstract
The encapsulation and/or surface modification can stabilize and protect the phosphorescence bio-probes but impede their intravenous delivery across biological barriers. Here, a new class of biocompatible rhenium (ReI ) diimine carbonyl complexes is developed, which can efficaciously permeate normal vessel walls and then functionalize the extravascular collagen matrixes as in situ oxygen sensor. Without protective agents, ReI -diimine complex already exhibits excellent emission yield (34%, λem = 583 nm) and large two-photon absorption cross-sections (σ2 = 300 GM @ 800 nm) in water (pH 7.4). After extravasation, remarkably, the collagen-bound probes further enhanced their excitation efficiency by increasing the deoxygenated lifetime from 4.0 to 7.5 µs, paving a way to visualize tumor hypoxia and tissue ischemia in vivo. The post-extravasation functionalization of extracellular matrixes demonstrates a new methodology for biomaterial-empowered phosphorescence sensing and imaging.
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Affiliation(s)
- Cheng‐Ham Wu
- Department of ChemistryNational Taiwan UniversityTaipei10617Taiwan
| | - Kristina S. Kisel
- Department of ChemistryUniversity of Eastern FinlandJoensuu80101Finland
- St.‐Petersburg State University7/9 Universitetskaya nabSt.‐Petersburg199034Russia
| | | | - Yi‐Ting Chen
- Department of ChemistryNational Taiwan UniversityTaipei10617Taiwan
| | - Kai‐Hsin Chang
- Department of ChemistryNational Taiwan UniversityTaipei10617Taiwan
| | - Ming‐Rung Tsai
- Department of ChemistryNational Taiwan UniversityTaipei10617Taiwan
| | - Chia‐Yu Chu
- Department of DermatologyNational Taiwan University Hospital and National Taiwan University College of MedicineTaipei10002Taiwan
| | - Yu‐Fang Shen
- Department of Bioinformatics and Medical EngineeringAsia UniversityTaichung City41354Taiwan
- 3D Printing Medical Research InstituteAsia UniversityTaichung City41354Taiwan
| | - Pei‐Chun Wu
- Institute of Translational Medicine, Faculty of Health SciencesMinistry of Education Frontiers Science Center for Precision OncologyUniversity of MacauTaipaMacau999078China
| | - Zhiming Zhang
- Institute of Translational Medicine, Faculty of Health SciencesMinistry of Education Frontiers Science Center for Precision OncologyUniversity of MacauTaipaMacau999078China
| | - Tzu‐Ming Liu
- Institute of Translational Medicine, Faculty of Health SciencesMinistry of Education Frontiers Science Center for Precision OncologyUniversity of MacauTaipaMacau999078China
| | - Janne Jänis
- Department of ChemistryUniversity of Eastern FinlandJoensuu80101Finland
| | - Elena V. Grachova
- St.‐Petersburg State University7/9 Universitetskaya nabSt.‐Petersburg199034Russia
| | - Julia R. Shakirova
- St.‐Petersburg State University7/9 Universitetskaya nabSt.‐Petersburg199034Russia
| | - Sergey P. Tunik
- St.‐Petersburg State University7/9 Universitetskaya nabSt.‐Petersburg199034Russia
| | - Igor O. Koshevoy
- Department of ChemistryUniversity of Eastern FinlandJoensuu80101Finland
| | - Pi‐Tai Chou
- Department of ChemistryNational Taiwan UniversityTaipei10617Taiwan
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7
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Scoditti S, Dabbish E, Russo N, Mazzone G, Sicilia E. Anticancer Activity, DNA Binding, and Photodynamic Properties of a N∧C∧N-Coordinated Pt(II) Complex. Inorg Chem 2021; 60:10350-10360. [PMID: 34170132 DOI: 10.1021/acs.inorgchem.1c00822] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
In the effort to discover new targets and improve the therapeutic efficacy of metal-containing anticancer compounds, transition metal complexes that can elicit cytotoxicity when irradiated with light of a proper wavelength and, then, candidates as potential photosensitizers for photodynamic therapy are actively being investigated. In this work, the cytotoxicity in the dark and the photophysical properties of the complex Pt(N∧C∧N)Cl, where the N∧C∧N ligand is 2,6-dipyrido-4-methyl-benzene chloride, are investigated in detail by means of a series of theoretical levels, that is density functional theory and its time-dependent extension together with molecular dynamics (MD) simulations. In the dark, cytotoxicity has been explored by simulating the steps of the mechanism of action of classical Pt(II) complexes. The suitability of the investigated complex to act as a photosensitizer has been verified by calculating spectroscopic properties for both the unperturbed complex and its aquated and guanine-bound forms. Furthermore, using MD simulation outcomes as a starting point, the photophysical properties of DNA-intercalated and -bound complexes have been evaluated with the goal of establishing how intercalation and binding affect sensitization activity.
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Affiliation(s)
- Stefano Scoditti
- Department of Chemistry and Chemical Technologies, Università della Calabria, 87036 Arcavacata di Rende, CS, Italy
| | - Eslam Dabbish
- Department of Chemistry and Chemical Technologies, Università della Calabria, 87036 Arcavacata di Rende, CS, Italy
| | - Nino Russo
- Department of Chemistry and Chemical Technologies, Università della Calabria, 87036 Arcavacata di Rende, CS, Italy
| | - Gloria Mazzone
- Department of Chemistry and Chemical Technologies, Università della Calabria, 87036 Arcavacata di Rende, CS, Italy
| | - Emilia Sicilia
- Department of Chemistry and Chemical Technologies, Università della Calabria, 87036 Arcavacata di Rende, CS, Italy
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8
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Shewring JR, Hodgson L, Bryant HL, Bullough PA, Weinstein JA, Verkade P. Refining a correlative light electron microscopy workflow using luminescent metal complexes. Methods Cell Biol 2021; 162:69-87. [PMID: 33707023 DOI: 10.1016/bs.mcb.2020.12.008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
The potential for increasing the application of Correlative Light Electron Microscopy (CLEM) technologies in life science research is hindered by the lack of suitable molecular probes that are emissive, photostable, and scatter electrons well. Most brightly fluorescent organic molecules are intrinsically poor electron-scatterers, while multi-metallic compounds scatter electrons well but are usually non-luminescent. Thus, the goal of CLEM to image the same object of interest on the continuous scale from hundreds of microns to nanometers remains a major challenge partially due to requirements for a single probe to be suitable for light (LM) and electron microscopy (EM). Some of the main CLEM probes, based on gold nanoparticles appended with fluorophores and quantum dots (QD) have presented significant drawbacks. Here we present an Iridium-based luminescent metal complex (Ir complex 1) as a probe and describe how we have developed a CLEM workflow based on such metal complexes.
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Affiliation(s)
| | - Lorna Hodgson
- School of Biochemistry, University of Bristol, Biomedical Sciences Building, University Walk, Bristol, United Kingdom
| | - Helen L Bryant
- Department of Oncology, University of Sheffield, Sheffield, United Kingdom
| | - Per A Bullough
- Department of Molecular Biology and Biotechnology, University of Sheffield, Sheffield, United Kingdom
| | - Julia A Weinstein
- Department of Chemistry, University of Sheffield, Sheffield, United Kingdom
| | - Paul Verkade
- School of Biochemistry, University of Bristol, Biomedical Sciences Building, University Walk, Bristol, United Kingdom.
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9
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Puttock EV, Sturala J, Kistemaker JCM, Williams JAG. Platinum(II) Complexes of Tridentate ‐Coordinating Ligands Based on Imides, Amides, and Hydrazides: Synthesis and Luminescence Properties. Eur J Inorg Chem 2020. [DOI: 10.1002/ejic.202000879] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Emma V. Puttock
- Department of Chemistry Durham University DH1 3LE, U.K. Durham
| | - Jiri Sturala
- Department of Inorganic Chemistry University of Chemistry and Technology Prague Technicka 5 166 28 Prague 6 Czech Republic
| | - Jos C. M. Kistemaker
- Centre for Organic Photonics and Electronics The School of Chemistry and Molecular Biosciences University of Queensland 4072 Queensland Australia
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10
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Solomatina AI, Slobodina AD, Ryabova EV, Bolshakova OI, Chelushkin PS, Sarantseva SV, Tunik SP. Blood-Brain Barrier Penetrating Luminescent Conjugates Based on Cyclometalated Platinum(II) Complexes. Bioconjug Chem 2020; 31:2628-2637. [DOI: 10.1021/acs.bioconjchem.0c00542] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
| | - Aleksandra D. Slobodina
- Petersburg Nuclear Physics Institute named by B.P. Konstantinov of National Research Centre ≪Kurchatov Institute≫, Gatchina 188300, Russia
| | - Elena V. Ryabova
- Petersburg Nuclear Physics Institute named by B.P. Konstantinov of National Research Centre ≪Kurchatov Institute≫, Gatchina 188300, Russia
| | - Olga I. Bolshakova
- Petersburg Nuclear Physics Institute named by B.P. Konstantinov of National Research Centre ≪Kurchatov Institute≫, Gatchina 188300, Russia
| | - Pavel S. Chelushkin
- Institute of Chemistry, St. Petersburg State University, St. Petersburg 198504, Russia
| | - Svetlana V. Sarantseva
- Petersburg Nuclear Physics Institute named by B.P. Konstantinov of National Research Centre ≪Kurchatov Institute≫, Gatchina 188300, Russia
| | - Sergey P. Tunik
- Institute of Chemistry, St. Petersburg State University, St. Petersburg 198504, Russia
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11
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Molina N, Cnudde M, Guadix JA, Perez-Pomares JM, Strassert CA, Vida Y, Perez-Inestrosa E. Platinum-Doped Dendritic Structure as a Phosphorescent Label for Bacteria in Two-Photon Excitation Microscopy. ACS OMEGA 2019; 4:13027-13033. [PMID: 31460429 PMCID: PMC6704438 DOI: 10.1021/acsomega.9b00639] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/07/2019] [Accepted: 06/19/2019] [Indexed: 05/07/2023]
Abstract
Herein, we present a water-soluble dendritric Pt(II) complex as a phosphorescent label for bacterial cells. The dendritic moiety endows the Pt(II) complex with unique properties such as water solubility, shielding from quenching by dioxygen, and binding to bacterial surfaces. The new biosensor was employed for two-photon excitation microscopy, and the binding was confirmed by electron microscopy, which demonstrates that such hybrid arrays can provide orthogonal yet complementary readouts.
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Affiliation(s)
- Noemi Molina
- Departamento
de Química Orgánica, Facultad de Ciencias, Universidad de Málaga—IBIMA, Campus de Teatinos s/n, 29071 Málaga, Spain
- Centro
Andaluz de Nanomedicina y Biotecnología (BIONAND), Junta de
Andalucía, Universidad de Málaga, C/ Severo Ochoa 35, 29590 Campanillas (Málaga), Spain
| | - Marvin Cnudde
- CeNTech—CiMIC—Institut
für Anorganische und Analytische Chemie, W. W.-Universität
Münster, Heisenbergstr. 11, D-48149 Münster, Germany
| | - Juan A. Guadix
- Centro
Andaluz de Nanomedicina y Biotecnología (BIONAND), Junta de
Andalucía, Universidad de Málaga, C/ Severo Ochoa 35, 29590 Campanillas (Málaga), Spain
- Departamento
de Biología Animal, Facultad de Ciencias, Universidad de Málaga—IBIMA, Campus de Teatinos s/n, 29071 Málaga, Spain
| | - Jose M. Perez-Pomares
- Centro
Andaluz de Nanomedicina y Biotecnología (BIONAND), Junta de
Andalucía, Universidad de Málaga, C/ Severo Ochoa 35, 29590 Campanillas (Málaga), Spain
- Departamento
de Biología Animal, Facultad de Ciencias, Universidad de Málaga—IBIMA, Campus de Teatinos s/n, 29071 Málaga, Spain
| | - Cristian A. Strassert
- CeNTech—CiMIC—Institut
für Anorganische und Analytische Chemie, W. W.-Universität
Münster, Heisenbergstr. 11, D-48149 Münster, Germany
- E-mail: (C.A.S.)
| | - Yolanda Vida
- Departamento
de Química Orgánica, Facultad de Ciencias, Universidad de Málaga—IBIMA, Campus de Teatinos s/n, 29071 Málaga, Spain
- Centro
Andaluz de Nanomedicina y Biotecnología (BIONAND), Junta de
Andalucía, Universidad de Málaga, C/ Severo Ochoa 35, 29590 Campanillas (Málaga), Spain
- E-mail: (Y.V.)
| | - Ezequiel Perez-Inestrosa
- Departamento
de Química Orgánica, Facultad de Ciencias, Universidad de Málaga—IBIMA, Campus de Teatinos s/n, 29071 Málaga, Spain
- Centro
Andaluz de Nanomedicina y Biotecnología (BIONAND), Junta de
Andalucía, Universidad de Málaga, C/ Severo Ochoa 35, 29590 Campanillas (Málaga), Spain
- E-mail: (E.P.-I.)
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12
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Proetto MT, Sanning J, Peterlechner M, Thunemann M, Stegemann L, Sadegh S, Devor A, Gianneschi NC, Strassert CA. Phosphorescent Pt(ii) complexes spatially arrayed in micellar polymeric nanoparticles providing dual readout for multimodal imaging. Chem Commun (Camb) 2019; 55:501-504. [PMID: 30556084 PMCID: PMC6462434 DOI: 10.1039/c8cc06347h] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
In this paper we report phosphorescent Pt(ii) complexes as monomers which can be directly incorporated into growing polymers. Due to the amphiphilic nature of the polymers they can self-assemble into micellar nanoparticles, where the phosphorescent Pt(ii) complexes can arrange selectively in the core or shell of the nanoparticles. The complexes enable dual orthogonal imaging, made possible by the heavy metal, which enhances the contrast for these micelles in electron microscopy and facilitates spin-orbit coupling that turns on microsecond lifetime luminescence.
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Affiliation(s)
- Maria T Proetto
- Department of Chemistry and Biochemistry, University of California San Diego, 9500 Gilman Drive, La Jolla, CA 92093, USA
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13
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Hu W, Guo L, Bai L, Miao X, Ni Y, Wang Q, Zhao H, Xie M, Li L, Lu X, Huang W, Fan Q. Maximizing Aggregation of Organic Fluorophores to Prolong Fluorescence Lifetime for Two-Photon Fluorescence Lifetime Imaging. Adv Healthc Mater 2018; 7:e1800299. [PMID: 29806163 DOI: 10.1002/adhm.201800299] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2018] [Revised: 04/11/2018] [Indexed: 11/08/2022]
Abstract
Two-photon fluorescence lifetime imaging (TP-FLIM) not only permits imaging deep inside the tissues with precise spatial manipulation but also circumvents tissue autofluorescence, holding tremendous promise in molecular imaging. However, the serious lack of suitable contrast agents with long fluorescence lifetime and efficient two-photon absorption (TPA) greatly limits the advance of TP-FLIM. This study reports a simple approach to fabricate water-soluble organic semiconducting nanoparticles [thioxanthone (TXO) NPs] with ultralong fluorescence lifetime and efficient TPA for in vivo TP-FLIM. The approach utilizes the aggregation of a specifically selected thermally activated delayed fluorescence (TADF) fluorophore to prolong its fluorescence lifetime. Encapsulating the TADF fluorophore within an amphiphilic copolymer not only maximizes its aggregation but also obtains TXO NPs with efficient TPA. Importantly, as-prepared TXO NPs exhibit a considerably long fluorescence lifetime at a magnitude of 4.2 µs, which is almost 1000 times larger than that of existing organic contrast agents. Moreover, such long fluorescence lifetime is almost oxygen-inert, readily realizing both in vitro and in vivo TP-FLIM. This work may set valuable guidance for designing organic semiconducting materials with ultralong fluorescence lifetimes to fulfill the potential of FLIM.
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Affiliation(s)
- Wenbo Hu
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM); Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM); Nanjing Tech University (NanjingTech); Nanjing 211816 China
| | - Lihong Guo
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM); Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM); Nanjing Tech University (NanjingTech); Nanjing 211816 China
| | - Lei Bai
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM); Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM); Nanjing Tech University (NanjingTech); Nanjing 211816 China
| | - Xiaofei Miao
- Key Laboratory for Organic Electronics and Information Displays & Institute of Advanced Materials (IAM); Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM); Nanjing University of Posts & Telecommunications; Nanjing 210023 China
| | - Yun Ni
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM); Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM); Nanjing Tech University (NanjingTech); Nanjing 211816 China
| | - Qi Wang
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM); Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM); Nanjing Tech University (NanjingTech); Nanjing 211816 China
| | - Hui Zhao
- Key Laboratory for Organic Electronics and Information Displays & Institute of Advanced Materials (IAM); Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM); Nanjing University of Posts & Telecommunications; Nanjing 210023 China
| | - Meng Xie
- Key Laboratory for Organic Electronics and Information Displays & Institute of Advanced Materials (IAM); Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM); Nanjing University of Posts & Telecommunications; Nanjing 210023 China
| | - 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 (NanjingTech); Nanjing 211816 China
| | - Xiaomei Lu
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM); Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM); Nanjing Tech University (NanjingTech); Nanjing 211816 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 (NanjingTech); Nanjing 211816 China
- Shaanxi Institute of Flexible Electronics (SIFE); Northwestern Polytechnical University (NPU); Xi'an 710072 China
| | - Quli Fan
- Key Laboratory for Organic Electronics and Information Displays & Institute of Advanced Materials (IAM); Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM); Nanjing University of Posts & Telecommunications; Nanjing 210023 China
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14
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Delcanale P, Galstyan A, Daniliuc CG, Grecco HE, Abbruzzetti S, Faust A, Viappiani C, Strassert CA. Oxygen-Insensitive Aggregates of Pt(II) Complexes as Phosphorescent Labels of Proteins with Luminescence Lifetime-Based Readouts. ACS APPLIED MATERIALS & INTERFACES 2018; 10:24361-24369. [PMID: 29989787 DOI: 10.1021/acsami.8b02709] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
The synthesis and photophysical properties of a tailored Pt(II) complex are presented. The phosphorescence of its monomeric species in homogeneous solutions is quenched by interaction with the solvent and therefore absent even upon deoxygenation. However, aggregation-induced shielding from the environment and suppression of rotovibrational degrees of freedom trigger a phosphorescence turn-on that is not suppressed by molecular oxygen, despite possessing an excited-state lifetime ranging in the microsecond scale. Thus, the photoinduced production of reactive oxygen species is avoided by the suppression of diffusion-controlled Dexter-type energy transfer to triplet molecular oxygen. These aggregates emit with the characteristic green luminescence profile of monomeric complexes, indicating that Pt-Pt or excimeric interactions are negligible. Herein, we show that these aggregates can be used to label a model biomolecule (bovine serum albumin) with a microsecond-range luminescence. The protein stabilizes the aggregates, acting as a carrier in aqueous environments. Despite spectral overlaps, the green phosphorescence can be separated by time-gated detection from the dominant autofluorescence of the protein arising from a covalently bound green fluorophore that emits in the nanosecond range. Interestingly, the aggregates also acted as energy donors able to sensitize the emission of a fraction of the fluorophores bound to the protein. This resulted in a microsecond-range luminescence of the fluorescent acceptors and a shortening of the excited-state lifetime of the phosphorescent aggregates. The process that can be traced by a 1000-fold increase in the acceptor's lifetime mirrors the donor's triplet character. The implications for phosphorescence lifetime imaging are discussed.
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Affiliation(s)
- Pietro Delcanale
- Dipartimento di Scienze Matematiche , Fisiche e Informatiche , Parco Area delle Scienze 7A , 43124 Parma , Italy
| | - Anzhela Galstyan
- Physikalisches Institut and Center for Nanotechnology , Westfälische Wilhelms-Universität Münster , Heisenbergstraße 11 , D-48149 Münster , Germany
| | - Constantin G Daniliuc
- Organisch-Chemisches Institut , Westfälische Wilhelms-Universität Münster , Corrensstraße 40 , D-48149 Münster , Germany
| | - Hernan E Grecco
- Departamento de Física , FCEyN, UBA and IFIBA, CONICET, Pabellón 1, Ciudad Universitaria , 1428 Buenos Aires , Argentina
| | - Stefania Abbruzzetti
- Dipartimento di Scienze Matematiche , Fisiche e Informatiche , Parco Area delle Scienze 7A , 43124 Parma , Italy
| | - Andreas Faust
- University Hospital Münster and European Institute for Molecular Imaging , Westfälische Wilhelms-Universität Münster , Waldeyerstraße 15 , D-48149 Münster , Germany
| | - Cristiano Viappiani
- Dipartimento di Scienze Matematiche , Fisiche e Informatiche , Parco Area delle Scienze 7A , 43124 Parma , Italy
| | - Cristian A Strassert
- Physikalisches Institut and Center for Nanotechnology , Westfälische Wilhelms-Universität Münster , Heisenbergstraße 11 , D-48149 Münster , Germany
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15
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Wilde S, González-Abradelo D, Daniliuc CG, Böckmann M, Doltsinis NL, Strassert CA. Fluorination-controlled Aggregation and Intermolecular Interactions in Pt(II) Complexes with Tetradentate Luminophores. Isr J Chem 2018. [DOI: 10.1002/ijch.201800050] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Sebastian Wilde
- Physikalisches Institut and Center for Nanotechnology; Westfälische Wilhelms-Universität Münster; Heisenbergstraße 11 D-48149 Germany Münster
| | - Darío González-Abradelo
- Physikalisches Institut and Center for Nanotechnology; Westfälische Wilhelms-Universität Münster; Heisenbergstraße 11 D-48149 Germany Münster
| | - Constantin-Gabriel Daniliuc
- Organisch-Chemisches Institut; Westfälische Wilhelms-Universität Münster; Corrensstraße 40 D-48149 Germany Münster
| | - Marcus Böckmann
- Institut für Festkörpertheorie and Center for Multiscale Theory and Computation; Westfälische Wilhelms-Universität Münster; Wilhelm-Klemm Straße 10 D-48149 Germany Münster
| | - Nikos L. Doltsinis
- Institut für Festkörpertheorie and Center for Multiscale Theory and Computation; Westfälische Wilhelms-Universität Münster; Wilhelm-Klemm Straße 10 D-48149 Germany Münster
| | - Cristian A. Strassert
- Physikalisches Institut and Center for Nanotechnology; Westfälische Wilhelms-Universität Münster; Heisenbergstraße 11 D-48149 Germany Münster
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16
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Hierlinger C, Cordes DB, Slawin AMZ, Colombo A, Dragonetti C, Righetto S, Roberto D, Jacquemin D, Zysman-Colman E, Guerchais V. An investigation on the second-order nonlinear optical response of cationic bipyridine or phenanthroline iridium(iii) complexes bearing cyclometallated 2-phenylpyridines with a triphenylamine substituent. Dalton Trans 2018; 47:8292-8300. [PMID: 29892764 DOI: 10.1039/c8dt00754c] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
The synthesis and characterisation of six new cationic iridium(iii) complexes bearing either 4,4'-di-tert-butyl-2,2'-bipyridine (dtBubpy) or 5-NO2-1,10-phenanthroline along with two cyclometallated 2-phenylpyridine derivative ligands, decorated with triphenylamine groups either meta or para to the Ir-CC^N bond or para to the Ir-NC^N bond, are reported. The second-order nonlinear optical (NLO) properties of all the compounds have been determined by the electric field induced second harmonic generation technique and show that the μβEFISH value can be tuned by the nature of the iridium coordination sphere. The dipole moment, μ, necessary to evaluate the quadratic hyperpolarizability βEFISH, was theoretically determined. The linear optical properties of the complexes are also presented and rationalised by quantum-chemical calculations. One of the prepared iridium compounds was incorporated into a polystyrene film, affording the first example of a second-order NLO active polymeric film based on a cationic organometallic complex.
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Affiliation(s)
- Claus Hierlinger
- Univ Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes) - UMR 6226, F-35000 Rennes, France.
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17
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Hebenbrock M, González-Abradelo D, Strassert CA, Müller J. DNA Groove-binding Ability of Luminescent Platinum(II) Complexes based on a Family of Tridentate N^N^C Ligands Bearing Differently Substituted Alkyl Tethers. Z Anorg Allg Chem 2018. [DOI: 10.1002/zaac.201800088] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Marian Hebenbrock
- Institut für Anorganische und Analytische Chemie; Westfälische Wilhelms-Universität Münster; Corrensstraße 30 48149 Münster Germany
| | - Darío González-Abradelo
- CeNTech and Physikalisches Institut; Westfälische Wilhelms-Universität Münster; Heisenbergstraße 11 48149 Münster Germany
| | - Cristian A. Strassert
- CeNTech and Physikalisches Institut; Westfälische Wilhelms-Universität Münster; Heisenbergstraße 11 48149 Münster Germany
| | - Jens Müller
- Institut für Anorganische und Analytische Chemie; Westfälische Wilhelms-Universität Münster; Corrensstraße 30 48149 Münster Germany
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18
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Zhang KY, Yu Q, Wei H, Liu S, Zhao Q, Huang W. Long-Lived Emissive Probes for Time-Resolved Photoluminescence Bioimaging and Biosensing. Chem Rev 2018; 118:1770-1839. [DOI: 10.1021/acs.chemrev.7b00425] [Citation(s) in RCA: 479] [Impact Index Per Article: 79.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Kenneth Yin Zhang
- Key Laboratory for Organic Electronics and Information Displays & Jiangsu Key Laboratory for Biosensors, Institute of Advanced Materials (IAM), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing University of Posts & Telecommunications, 9 Wenyuan Road, Nanjing 210023, P. R. China
| | - Qi Yu
- Key Laboratory for Organic Electronics and Information Displays & Jiangsu Key Laboratory for Biosensors, Institute of Advanced Materials (IAM), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing University of Posts & Telecommunications, 9 Wenyuan Road, Nanjing 210023, P. R. China
| | - Huanjie Wei
- Key Laboratory for Organic Electronics and Information Displays & Jiangsu Key Laboratory for Biosensors, Institute of Advanced Materials (IAM), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing University of Posts & Telecommunications, 9 Wenyuan Road, Nanjing 210023, P. R. China
| | - Shujuan Liu
- Key Laboratory for Organic Electronics and Information Displays & Jiangsu Key Laboratory for Biosensors, Institute of Advanced Materials (IAM), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing University of Posts & Telecommunications, 9 Wenyuan Road, Nanjing 210023, P. R. China
| | - Qiang Zhao
- Key Laboratory for Organic Electronics and Information Displays & Jiangsu Key Laboratory for Biosensors, Institute of Advanced Materials (IAM), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing University of Posts & Telecommunications, 9 Wenyuan Road, Nanjing 210023, P. R. China
| | - Wei Huang
- Key Laboratory for Organic Electronics and Information Displays & Jiangsu Key Laboratory for Biosensors, Institute of Advanced Materials (IAM), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing University of Posts & Telecommunications, 9 Wenyuan Road, Nanjing 210023, P. R. China
- Shaanxi
Institute of Flexible Electronics (SIFE), Northwestern Polytechnical University (NPU), Xi’an 710072, P. R. China
- Key
Laboratory of Flexible Electronics (KLOFE) and Institute of Advanced
Materials (IAM), Jiangsu National Synergetic Innovation Center for
Advanced Materials (SICAM), Nanjing Tech University (NanjingTech), Nanjing 211800, P. R. China
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19
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Liu YT, Yin X, Lai XY, Wang X. Theoretical study on photophysical properties of three high water solubility polypyridyl complexes for two-photon photodynamic therapy. Phys Chem Chem Phys 2018; 20:18074-18081. [DOI: 10.1039/c8cp01069b] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Two-photon photodynamic therapy (TP-PDT) is a very promising treatment that has drawn much attention in recent years due to its ability to penetrate deeper into tissues and minimize the damage to normal cells.
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Affiliation(s)
- Ying-Tao Liu
- State Key Laboratory of High-efficiency Coal Utilization and Green Chemical Engineering
- College of Chemistry and Chemical Engineering
- Ningxia University
- Yinchuan 750021
- China
| | - Xue Yin
- State Key Laboratory of High-efficiency Coal Utilization and Green Chemical Engineering
- College of Chemistry and Chemical Engineering
- Ningxia University
- Yinchuan 750021
- China
| | - Xiao-Yong Lai
- State Key Laboratory of High-efficiency Coal Utilization and Green Chemical Engineering
- College of Chemistry and Chemical Engineering
- Ningxia University
- Yinchuan 750021
- China
| | - Xin Wang
- State Key Laboratory of High-efficiency Coal Utilization and Green Chemical Engineering
- College of Chemistry and Chemical Engineering
- Ningxia University
- Yinchuan 750021
- China
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20
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Shewring JR, Cankut AJ, McKenzie LK, Crowston BJ, Botchway SW, Weinstein JA, Edwards E, Ward MD. Multimodal Probes: Superresolution and Transmission Electron Microscopy Imaging of Mitochondria, and Oxygen Mapping of Cells, Using Small-Molecule Ir(III) Luminescent Complexes. Inorg Chem 2017; 56:15259-15270. [PMID: 29199820 DOI: 10.1021/acs.inorgchem.7b02633] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
We describe an Ir(III)-based small-molecule, multimodal probe for use in both light and electron microscopy. The direct correlation of data between light- and electron-microscopy-based imaging to investigate cellular processes at the ultrastructure level is a current challenge, requiring both dyes that must be brightly emissive for luminescence imaging and scatter electrons to give contrast for electron microscopy, at a single working concentration suitable for both methods. Here we describe the use of Ir(III) complexes as probes that provide excellent image contrast and quality for both luminescence and electron microscopy imaging, at the same working concentration. Significant contrast enhancement of cellular mitochondria was observed in transmission electron microscopy imaging, with and without the use of typical contrast agents. The specificity for cellular mitochondria was also confirmed with MitoTracker using confocal and 3D-structured illumination microscopy. These phosphorescent dyes are part of a very exclusive group of transition-metal complexes that enable imaging beyond the diffraction limit. Triplet excited-state phosphorescence was also utilized to probe the O2 concentration at the mitochondria in vitro, using lifetime mapping techniques.
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Affiliation(s)
| | - Ahmet J Cankut
- Department of Chemistry, University of Sheffield , Sheffield S3 7HF, U.K
| | - Luke K McKenzie
- Department of Chemistry, University of Sheffield , Sheffield S3 7HF, U.K
| | - Bethany J Crowston
- Department of Chemistry, University of Sheffield , Sheffield S3 7HF, U.K
| | - Stanley W Botchway
- Rutherford Appleton Laboratory, STFC Research Complex at Harwell, Harwell Science and Innovation Campus , Didcot OX11 0FA, U.K
| | - Julia A Weinstein
- Department of Chemistry, University of Sheffield , Sheffield S3 7HF, U.K
| | - Elizabeth Edwards
- Department of Chemistry, University of Sheffield , Sheffield S3 7HF, U.K
| | - Michael D Ward
- Department of Chemistry, University of Warwick , Coventry CV4 7AL, U.K
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21
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Raza A, Colley HE, Baggaley E, Sazanovich IV, Green NH, Weinstein JA, Botchway SW, MacNeil S, Haycock JW. Oxygen Mapping of Melanoma Spheroids using Small Molecule Platinum Probe and Phosphorescence Lifetime Imaging Microscopy. Sci Rep 2017; 7:10743. [PMID: 28878302 PMCID: PMC5587740 DOI: 10.1038/s41598-017-11153-9] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2017] [Accepted: 08/21/2017] [Indexed: 02/05/2023] Open
Abstract
Solid tumours display varied oxygen levels and this characteristic can be exploited to develop new diagnostic tools to determine and exploit these variations. Oxygen is an efficient quencher of emission of many phosphorescent compounds, thus oxygen concentration could in many cases be derived directly from relative emission intensity and lifetime. In this study, we extend our previous work on phosphorescent, low molecular weight platinum(II) complex as an oxygen sensing probe to study the variation in oxygen concentration in a viable multicellular 3D human tumour model. The data shows one of the first examples of non-invasive, real-time oxygen mapping across a melanoma tumour spheroid using one-photon phosphorescence lifetime imaging microscopy (PLIM) and a small molecule oxygen sensitive probe. These measurements were quantitative and enabled real time oxygen mapping with high spatial resolution. This combination presents as a valuable tool for optical detection of both physiological and pathological oxygen levels in a live tissue mass and we suggest has the potential for broader clinical application.
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Affiliation(s)
- Ahtasham Raza
- Materials Science & Engineering, University of Sheffield, Sheffield, S3 7HQ, UK
| | - Helen E Colley
- School of Clinical Dentistry, University of Sheffield, Sheffield, S10 2TA, UK
| | | | - Igor V Sazanovich
- Research Complex at Harwell (CLF), STFC Rutherford Appleton Laboratory, Oxford, OX11 0QX, UK
| | - Nicola H Green
- Materials Science & Engineering, University of Sheffield, Sheffield, S3 7HQ, UK
| | - Julia A Weinstein
- Department of Chemistry, University of Sheffield, Sheffield, S3 7HF, UK
| | - Stanley W Botchway
- Research Complex at Harwell (CLF), STFC Rutherford Appleton Laboratory, Oxford, OX11 0QX, UK
| | - Sheila MacNeil
- Materials Science & Engineering, University of Sheffield, Sheffield, S3 7HQ, UK
| | - John W Haycock
- Materials Science & Engineering, University of Sheffield, Sheffield, S3 7HQ, UK.
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22
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Solomatina AI, Chelushkin PS, Krupenya DV, Podkorytov IS, Artamonova TO, Sizov VV, Melnikov AS, Gurzhiy VV, Koshel EI, Shcheslavskiy VI, Tunik SP. Coordination to Imidazole Ring Switches on Phosphorescence of Platinum Cyclometalated Complexes: The Route to Selective Labeling of Peptides and Proteins via Histidine Residues. Bioconjug Chem 2016; 28:426-437. [DOI: 10.1021/acs.bioconjchem.6b00598] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Anastasia I. Solomatina
- Saint Petersburg State University, Institute of
Chemistry, Universitetskii
prospect. 26, 198504 Saint Petersburg, Russia
| | - Pavel S. Chelushkin
- Saint Petersburg State University, Institute of
Chemistry, Universitetskii
prospect. 26, 198504 Saint Petersburg, Russia
- Institute
of Macromolecular Compounds, Russian Academy of Sciences, Bolshoi
prospect, Vasilievskii Island, 31, 199004 Saint Petersburg, Russia
| | - Dmitrii V. Krupenya
- Saint Petersburg State University, Institute of
Chemistry, Universitetskii
prospect. 26, 198504 Saint Petersburg, Russia
| | - Ivan S. Podkorytov
- Saint Petersburg State University, Biomolecular
NMR Laboratory, Botanicheskaya
Str., 17, 198504 Saint Petersburg, Russia
| | - Tatiana O. Artamonova
- Research
Center of Nanobiotechnologies, Peter the Great Saint Petersburg Polytechnic University, Polytechnicheskaya, 29, 195251 Saint Petersburg, Russia
| | - Vladimir V. Sizov
- Saint Petersburg State University, Institute of
Chemistry, Universitetskii
prospect. 26, 198504 Saint Petersburg, Russia
| | - Alexei S. Melnikov
- Saint Petersburg State University, Department
of Physics, Ulianovskaya
Str., 3, 198504 Saint Petersburg, Russia
- Research
Center of Nanobiotechnologies, Peter the Great Saint Petersburg Polytechnic University, Polytechnicheskaya, 29, 195251 Saint Petersburg, Russia
| | - Vladislav V. Gurzhiy
- Saint Petersburg State University, Institute of Earth Sciences and Biology Department, University embankment. 7/9, 199034 Saint Petersburg, Russia
| | - Elena I. Koshel
- Saint Petersburg State University, Institute of Earth Sciences and Biology Department, University embankment. 7/9, 199034 Saint Petersburg, Russia
| | | | - Sergey P. Tunik
- Saint Petersburg State University, Institute of
Chemistry, Universitetskii
prospect. 26, 198504 Saint Petersburg, Russia
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23
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Ma Y, Liang H, Zeng Y, Yang H, Ho CL, Xu W, Zhao Q, Huang W, Wong WY. Phosphorescent soft salt for ratiometric and lifetime imaging of intracellular pH variations. Chem Sci 2016; 7:3338-3346. [PMID: 29997827 PMCID: PMC6006953 DOI: 10.1039/c5sc04624f] [Citation(s) in RCA: 53] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2015] [Accepted: 02/04/2016] [Indexed: 12/30/2022] Open
Abstract
In contrast to traditional short-lived fluorescent probes, long-lived phosphorescent probes based on transition-metal complexes can effectively eliminate unwanted background interference by using time-resolved luminescence imaging techniques, such as photoluminescence lifetime imaging microscopy. Hence, phosphorescent probes have become one of the most attractive candidates for investigating biological events in living systems. However, most of them are based on single emission intensity changes, which might be affected by a variety of intracellular environmental factors. Ratiometric measurement allows simultaneous recording of two separated wavelengths instead of measuring mere intensity changes and thus offers built-in correction for environmental effects. Herein, for the first time, a soft salt based phosphorescent probe has been developed for ratiometric and lifetime imaging of intracellular pH variations in real time. Specifically, a pH sensitive cationic complex (C1) and a pH insensitive anionic complex (A1) are directly connected through electrostatic interaction to form a soft salt based probe (S1), which exhibits a ratiometric phosphorescent response to pH with two well-resolved emission peaks separated by about 150 nm (from 475 to 625 nm). This novel probe was then successfully applied for ratiometric and lifetime imaging of intracellular pH variations. Moreover, quantitative measurements of intracellular pH fluctuations caused by oxidative stress have been performed for S1 based on the pH-dependent calibration curve.
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Affiliation(s)
- Yun Ma
- Institute of Molecular Functional Materials , Department of Chemistry and Partner State Key Laboratory of Environmental and Biological Analysis , Hong Kong Baptist University , Waterloo Road , Hong Kong , P. R. China . ; ; Tel: +852 34117074
| | - Hua Liang
- Key Laboratory for Organic Electronics & Information Displays (KLOEID) , Institute of Advanced Materials (IAM) , Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM) , Nanjing University of Posts and Telecommunications , Nanjing 210023 , P. R. China . ; ; Tel: +86 25 85866396
| | - Yi Zeng
- Institute of Molecular Functional Materials , Department of Chemistry and Partner State Key Laboratory of Environmental and Biological Analysis , Hong Kong Baptist University , Waterloo Road , Hong Kong , P. R. China . ; ; Tel: +852 34117074
| | - Huiran Yang
- Key Laboratory for Organic Electronics & Information Displays (KLOEID) , Institute of Advanced Materials (IAM) , Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM) , Nanjing University of Posts and Telecommunications , Nanjing 210023 , P. R. China . ; ; Tel: +86 25 85866396
| | - Cheuk-Lam Ho
- Institute of Molecular Functional Materials , Department of Chemistry and Partner State Key Laboratory of Environmental and Biological Analysis , Hong Kong Baptist University , Waterloo Road , Hong Kong , P. R. China . ; ; Tel: +852 34117074
| | - Wenjuan Xu
- Key Laboratory for Organic Electronics & Information Displays (KLOEID) , Institute of Advanced Materials (IAM) , Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM) , Nanjing University of Posts and Telecommunications , Nanjing 210023 , P. R. China . ; ; Tel: +86 25 85866396
| | - Qiang Zhao
- Key Laboratory for Organic Electronics & Information Displays (KLOEID) , Institute of Advanced Materials (IAM) , Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM) , Nanjing University of Posts and Telecommunications , Nanjing 210023 , P. R. China . ; ; Tel: +86 25 85866396
| | - Wei Huang
- Key Laboratory for Organic Electronics & Information Displays (KLOEID) , Institute of Advanced Materials (IAM) , Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM) , Nanjing University of Posts and Telecommunications , Nanjing 210023 , P. R. China . ; ; Tel: +86 25 85866396
| | - Wai-Yeung Wong
- Institute of Molecular Functional Materials , Department of Chemistry and Partner State Key Laboratory of Environmental and Biological Analysis , Hong Kong Baptist University , Waterloo Road , Hong Kong , P. R. China . ; ; Tel: +852 34117074
- Institute of Polymer Optoelectronic Materials and Devices , State Key Laboratory of Luminescent Materials and Devices , South China University of Technology , Guangzhou 510640 , P. R. China
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24
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Chen Y, Guan R, Zhang C, Huang J, Ji L, Chao H. Two-photon luminescent metal complexes for bioimaging and cancer phototherapy. Coord Chem Rev 2016. [DOI: 10.1016/j.ccr.2015.09.010] [Citation(s) in RCA: 146] [Impact Index Per Article: 18.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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25
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Cvejn D, Michail E, Seintis K, Klikar M, Pytela O, Mikysek T, Almonasy N, Ludwig M, Giannetas V, Fakis M, Bureš F. Solvent and branching effect on the two-photon absorption properties of push–pull triphenylamine derivatives. RSC Adv 2016. [DOI: 10.1039/c5ra25170b] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
The photophysical and two-photon absorption (2PA) properties of two tri-podal molecules and of their quadrupolar and dipolar counterparts are reported for a series of solvents with varying polarity.
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26
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Aliprandi A, Genovese D, Mauro M, De Cola L. Recent Advances in Phosphorescent Pt(II) Complexes Featuring Metallophilic Interactions: Properties and Applications. CHEM LETT 2015. [DOI: 10.1246/cl.150592] [Citation(s) in RCA: 150] [Impact Index Per Article: 16.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Alessandro Aliprandi
- Laboratoire de Chimie et des Biomatériaux Supramoléculaires, ISIS and icFRC, Université de Strasbourg and CNRS
| | - Damiano Genovese
- Karlsruher Institut für Technologie (KIT) Institut für Nanotechnologie
| | - Matteo Mauro
- Laboratoire de Chimie et des Biomatériaux Supramoléculaires, ISIS and icFRC, Université de Strasbourg and CNRS
- University of Strasbourg Institute for Advanced Study (USIAS)
| | - Luisa De Cola
- Laboratoire de Chimie et des Biomatériaux Supramoléculaires, ISIS and icFRC, Université de Strasbourg and CNRS
- Karlsruher Institut für Technologie (KIT) Institut für Nanotechnologie
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27
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Yoshihara T, Murayama S, Tobita S. Ratiometric Molecular Probes Based on Dual Emission of a Blue Fluorescent Coumarin and a Red Phosphorescent Cationic Iridium(III) Complex for Intracellular Oxygen Sensing. SENSORS 2015; 15:13503-21. [PMID: 26066988 PMCID: PMC4507661 DOI: 10.3390/s150613503] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/27/2015] [Revised: 05/27/2015] [Accepted: 06/04/2015] [Indexed: 01/17/2023]
Abstract
Ratiometric molecular probes RP1 and RP2 consisting of a blue fluorescent coumarin and a red phosphorescent cationic iridium complex connected by a tetra- or octaproline linker, respectively, were designed and synthesized for sensing oxygen levels in living cells. These probes exhibited dual emission with good spectral separation in acetonitrile. The photorelaxation processes, including intramolecular energy transfer, were revealed by emission quantum yield and lifetime measurements. The ratios (RI=(Ip/If)) between the phosphorescence (Ip) and fluorescence (If) intensities showed excellent oxygen responses; the ratio of
RI under degassed and aerated conditions (RI0/RI)
was 20.3 and 19.6 for RP1 and RP2. The introduction of the cationic Ir (III) complex improved the cellular uptake efficiency compared to that of a neutral analogue with a tetraproline linker. The emission spectra of the ratiometric probes internalized into living HeLa or MCF-7 cells could be obtained using a conventional microplate reader. The complex RP2 with an octaproline linker provided ratios comparable to the ratiometric measurements obtained using a microplate reader: the ratio of the
RI
value of RP2 under hypoxia (2.5% O2) to that under normoxia (21% O2) was 1.5 and 1.7 for HeLa and MCF-7 cells, respectively. Thus, the intracellular oxygen levels of MCF-7 cells could be imaged by ratiometric emission measurements using the complex RP2.
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Affiliation(s)
- Toshitada Yoshihara
- Department of Chemistry and Chemical Biology, Graduate School of Science and Technology, Gunma University, 1-5-1 Tenjin-cho, Kiryu, Gunma 376-8515, Japan.
| | - Saori Murayama
- Department of Chemistry and Chemical Biology, Graduate School of Science and Technology, Gunma University, 1-5-1 Tenjin-cho, Kiryu, Gunma 376-8515, Japan.
| | - Seiji Tobita
- Department of Chemistry and Chemical Biology, Graduate School of Science and Technology, Gunma University, 1-5-1 Tenjin-cho, Kiryu, Gunma 376-8515, Japan.
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28
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Jana A, Baggaley E, Amoroso A, Ward MD. A new ligand skeleton for imaging applications with d–f complexes: combined lifetime imaging and high relaxivity in an Ir/Gd dyad. Chem Commun (Camb) 2015; 51:8833-6. [DOI: 10.1039/c5cc02130h] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
The rigid dinuclear complexes Ir·Ln (Ln = Eu, Gd) show potential for use in dual magnetic resonance + time-resolved luminescence imaging (Ir·Gd) and d → f energy-transfer (Ir·Eu).
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Affiliation(s)
- Atanu Jana
- Department of Chemistry
- University of Sheffield
- Sheffield S3 7HF
- UK
| | | | | | - Michael D. Ward
- Department of Chemistry
- University of Sheffield
- Sheffield S3 7HF
- UK
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Time-Resolved Emission Imaging Microscopy Using Phosphorescent Metal Complexes: Taking FLIM and PLIM to New Lengths. LUMINESCENT AND PHOTOACTIVE TRANSITION METAL COMPLEXES AS BIOMOLECULAR PROBES AND CELLULAR REAGENTS 2014. [DOI: 10.1007/430_2014_168] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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