1
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Berry SN, Zou M, Nguyen SL, Sajowitz AE, Qin L, Lewis W, Jolliffe KA. Supramolecular Control of the Temperature Responsiveness of Fluorescent Macrocyclic Molecular Rotamers. Chemistry 2024; 30:e202400504. [PMID: 38499467 DOI: 10.1002/chem.202400504] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2024] [Revised: 03/18/2024] [Accepted: 03/18/2024] [Indexed: 03/20/2024]
Abstract
To fully harness the potential of molecular machines, it is crucial to develop methods by which to exert control over their speed of motion through the application of external stimuli. A conformationally strained macrocyclic fluorescent rotamer, CarROT, displays a reproducible and linear fluorescence decrease towards temperature over the physiological temperature range. Through the external addition of anions, cations or through deprotonation, the compound can access four discreet rotational speeds via supramolecular interactions (very slow, slow, fast and very fast) which in turn stop, reduce or enhance the thermoluminescent properties due to increasing or decreasing non-radiative decay processes, thereby providing a means to externally control the temperature sensitivity of the system. Through comparison with analogues with a higher degree of conformational freedom, the high thermosensitivity of CarROT over the physiological temperature range was determined to be due to conformational strain, which causes a high energy barrier to rotation over this range. Analogues with a higher degree of conformational freedom display lower sensitivities towards temperature over the same temperature range. This study provides an example of an information rich small molecule, in which programable rotational speed states can be observed with facile read-out.
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Affiliation(s)
- Stuart N Berry
- School of Chemistry, The University of Sydney, NSW, 2006, Australia
| | - Meijun Zou
- School of Chemistry, The University of Sydney, NSW, 2006, Australia
| | - Sarah L Nguyen
- School of Chemistry, The University of Sydney, NSW, 2006, Australia
| | - Aidan E Sajowitz
- School of Chemistry, The University of Sydney, NSW, 2006, Australia
| | - Lei Qin
- School of Chemistry, The University of Sydney, NSW, 2006, Australia
| | - William Lewis
- School of Chemistry, The University of Sydney, NSW, 2006, Australia
- Sydney Analytical, The University of Sydney, NSW, 2006, Australia
| | - Katrina A Jolliffe
- School of Chemistry, The University of Sydney, NSW, 2006, Australia
- The University of Sydney Nano Institute (Sydney Nano), The University of Sydney, NSW, 2006, Australia
- Australian Research Council Centre of Excellence for Innovations in Peptide and Protein Science, The University of Sydney, NSW, 2006, Australia
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2
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Li S, Li Y, Zhang S, Fang H, Huang Z, Zhang D, Ding A, Uvdal K, Hu Z, Huang K, Li L. Response strategies and biological applications of organic fluorescent thermometry: cell- and mitochondrion-level detection. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2024; 16:1968-1984. [PMID: 38511286 DOI: 10.1039/d4ay00117f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/22/2024]
Abstract
Temperature homeostasis is critical for cells to perform their physiological functions. Among the diverse methods for temperature detection, fluorescent temperature probes stand out as a proven and effective tool, especially for monitoring temperature in cells and suborganelles, with a specific emphasis on mitochondria. The utilization of these probes provides a new opportunity to enhance our understanding of the mechanisms and interconnections underlying various physiological activities related to temperature homeostasis. However, the complexity and variability of cells and suborganelles necessitate fluorescent temperature probes with high resolution and sensitivity. To meet the demanding requirements for intracellular/subcellular temperature detection, several strategies have been developed, offering a range of options to address this challenge. This review examines four fundamental temperature-response strategies employed by small molecule and polymer probes, including intramolecular rotation, polarity sensitivity, Förster resonance energy transfer, and structural changes. The primary emphasis was placed on elucidating molecular design and biological applications specific to each type of probe. Furthermore, this review provides an insightful discussion on factors that may affect fluorescent thermometry, providing valuable perspectives for future development in the field. Finally, the review concludes by presenting cutting-edge response strategies and research insights for mitigating biases in temperature sensing.
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Affiliation(s)
- Shuai Li
- The Institute of Flexible Electronics (IFE, Future Technologies), Xiamen University, Xiamen 361005, China.
| | - Yaoxuan Li
- Department of Health Statistics, School of Public Health, Shanxi Medical University, Taiyuan, China
| | - Shiji Zhang
- The Institute of Flexible Electronics (IFE, Future Technologies), Xiamen University, Xiamen 361005, China.
| | - Haixiao Fang
- The Institute of Flexible Electronics (IFE, Future Technologies), Xiamen University, Xiamen 361005, China.
- Future Display Institute in Xiamen, Xiamen 361005, China.
| | - Ze Huang
- The Institute of Flexible Electronics (IFE, Future Technologies), Xiamen University, Xiamen 361005, China.
| | - Duoteng Zhang
- The Institute of Flexible Electronics (IFE, Future Technologies), Xiamen University, Xiamen 361005, China.
| | - Aixiang Ding
- The Institute of Flexible Electronics (IFE, Future Technologies), Xiamen University, Xiamen 361005, China.
| | - Kajsa Uvdal
- Department of Physics, Chemistry and Biology, Linköping University, Linköping, 58183, Sweden.
| | - Zhangjun Hu
- Department of Physics, Chemistry and Biology, Linköping University, Linköping, 58183, Sweden.
| | - Kai Huang
- Future Display Institute in Xiamen, Xiamen 361005, China.
| | - Lin Li
- The Institute of Flexible Electronics (IFE, Future Technologies), Xiamen University, Xiamen 361005, China.
- Future Display Institute in Xiamen, Xiamen 361005, China.
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3
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Polita A, Žvirblis R, Dodonova-Vaitkūnienė J, Shivabalan AP, Maleckaitė K, Valinčius G. Bimodal effects on lipid droplets induced in cancer and non-cancer cells by chemotherapy drugs as revealed with a green-emitting BODIPY fluorescent probe. J Mater Chem B 2024; 12:3022-3030. [PMID: 38426244 DOI: 10.1039/d3tb02979d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/02/2024]
Abstract
Lipid droplets (LDs) are cytoplasmic lipid-rich organelles with important roles in lipid storage and metabolism, cell signaling and membrane biosynthesis. Additionally, multiple diseases, such as obesity, fatty liver, cardiovascular diseases and cancer, are related to the metabolic disorders of LDs. In various cancer cells, LD accumulation is associated with resistance to cell death, reduced effectiveness of chemotherapeutic drugs, and increased proliferation and aggressiveness. In this work, we present a new viscosity-sensitive, green-emitting BODIPY probe capable of distinguishing between ordered and disordered lipid phases and selectively internalising into LDs of live cells. Through the use of fluorescence lifetime imaging microscopy (FLIM), we demonstrate that LDs in live cancer (A549) and non-cancer (HEK 293T) cells have vastly different microviscosities. Additionally, we quantify the microviscosity changes in LDs under the influence of DNA-damaging chemotherapy drugs doxorubicin and etoposide. Finally, we show that doxorubicin and etoposide have different effects on the microviscosities of LDs in chemotherapy-resistant A549 cancer cells.
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Affiliation(s)
- Artūras Polita
- Institute of Biochemistry, Life Sciences Center, Vilnius University, Saulėtekio av. 7, Vilnius, LT-10257, Lithuania.
| | - Rokas Žvirblis
- Life Sciences Center, Institute of Biotechnology, Vilnius University, Saulėtekio av. 7, Vilnius, LT-10257, Lithuania
| | - Jelena Dodonova-Vaitkūnienė
- Institute of Chemistry, Faculty of Chemistry and Geosciences, Vilnius University, Naugarduko st. 24, Vilnius, LT-03225, Lithuania
| | - Arun Prabha Shivabalan
- Institute of Biochemistry, Life Sciences Center, Vilnius University, Saulėtekio av. 7, Vilnius, LT-10257, Lithuania.
| | - Karolina Maleckaitė
- Center of Physical Sciences and Technology, Saulėtekio av. 3, Vilnius, LT-10257, Lithuania
| | - Gintaras Valinčius
- Institute of Biochemistry, Life Sciences Center, Vilnius University, Saulėtekio av. 7, Vilnius, LT-10257, Lithuania.
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4
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Paez‐Perez M, Kuimova MK. Molecular Rotors: Fluorescent Sensors for Microviscosity and Conformation of Biomolecules. Angew Chem Int Ed Engl 2024; 63:e202311233. [PMID: 37856157 PMCID: PMC10952837 DOI: 10.1002/anie.202311233] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2023] [Revised: 10/17/2023] [Accepted: 10/17/2023] [Indexed: 10/20/2023]
Abstract
The viscosity and crowding of biological environment are considered vital for the correct cellular function, and alterations in these parameters are known to underly a number of pathologies including diabetes, malaria, cancer and neurodegenerative diseases, to name a few. Over the last decades, fluorescent molecular probes termed molecular rotors proved extremely useful for exploring viscosity, crowding, and underlying molecular interactions in biologically relevant settings. In this review, we will discuss the basic principles underpinning the functionality of these probes and will review advances in their use as sensors for lipid order, protein crowding and conformation, temperature and non-canonical nucleic acid structures in live cells and other relevant biological settings.
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Affiliation(s)
- Miguel Paez‐Perez
- Department of Chemistry, Imperial College London, MSRHImperial College LondonWood LaneLondonW12 0BZUK
| | - Marina K. Kuimova
- Department of Chemistry, Imperial College London, MSRHImperial College LondonWood LaneLondonW12 0BZUK
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5
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Kumar MS, S V, Dolai M, Nag A, Bylappa Y, Das AK. Viscosity-sensitive and AIE-active bimodal fluorescent probe for the selective detection of OCl - and Cu 2+: a dual sensing approach via DFT and biological studies using green gram seeds. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2024; 16:676-685. [PMID: 38189149 DOI: 10.1039/d3ay01971c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/09/2024]
Abstract
A novel dual-mode viscosity-sensitive and AIE-active fluorescent chemosensor based on the naphthalene coupled pyrene (NCP) moiety was designed and synthesized for the selective detection of OCl- and Cu2+. In non-viscous media, NCP exhibited weak fluorescence; however, with an increase in viscosity using various proportions of glycerol, the fluorescence intensity was enhanced to 461 nm with a 6-fold increase in fluorescence quantum yields, which could be utilized for the quantitative determination of viscosity. Interestingly, NCP exhibited novel AIE characteristics in terms of size and growth in H2O-CH3CN mixtures with high water contents and different volume percentage of water, which was investigated using fluorescence, DLS study and SEM analysis. Interestingly, this probe can also be effectively employed as a dual-mode fluorescent probe for light up fluorescent detection of OCl- and Cu2+ at different emission wavelengths of 439 nm and 457 nm via chemodosimetric and chelation pathways, respectively. The fast-sensing ability of NCP towards OCl- was shown by a low detection limit of 0.546 μM and the binding affinity of NCP with Cu2+ was proved by a low detection limit of 3.97 μM and a high binding constant of 1.66 × 103 M-1. The sensing mechanism of NCP towards OCl- and Cu2+ was verified by UV-vis spectroscopy, fluorescence analysis, 1H-NMR analysis, mass spectroscopy, DFT study and Job plot analysis. For practical applications, the binding of NCP with OCl- and Cu2+ was determined using a dipstick method and a cell imaging study in a physiological medium using green gram seeds.
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Affiliation(s)
- Malavika S Kumar
- Department of Chemistry, CHRIST (Deemed to be University), Hosur Road, Bangalore, Karnataka, 560029, India.
| | - Vishnu S
- Department of Chemistry, CHRIST (Deemed to be University), Hosur Road, Bangalore, Karnataka, 560029, India.
| | - Malay Dolai
- Department of Chemistry, Prabhat Kumar College, Contai, Purba Medinipur 721404, W.B., India
| | - Anish Nag
- Department of Life Sciences, CHRIST (Deemed to be University), Hosur Road, Bangalore, Karnataka, 560029, India
| | - Yatheesharadhya Bylappa
- Department of Life Sciences, CHRIST (Deemed to be University), Hosur Road, Bangalore, Karnataka, 560029, India
| | - Avijit Kumar Das
- Department of Chemistry, CHRIST (Deemed to be University), Hosur Road, Bangalore, Karnataka, 560029, India.
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6
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Chen X, Yuan S, Qiao M, Jin X, Chen J, Guo L, Su J, Qu DH, Zhang Z. Exploring the Depth-Dependent Microviscosity inside a Micelle Using Butterfly-Motion-Based Fluorescent Probes. J Am Chem Soc 2023; 145:26494-26503. [PMID: 38000910 DOI: 10.1021/jacs.3c11482] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2023]
Abstract
The viscosity distribution of micellar interiors from the very center to the outer surface is dramatically varied, which has been distinguished in theoretical models, yet it remains highly challenging to quantify this issue experimentally. Herein, a series of fluorophore-substituted surfactants DPAC-Fn (n = 3, 5, 7, 9, 11, 13, and 15) are developed by functionalizing the different alkyl-trimethylammonium bromides with the butterfly motion-based viscosity sensor, N,N'-diphenyl-dihydrodibenzo[a,c]phenazine (DPAC). The immersion depth of DPAC units of DPAC-Fn in cetrimonium bromide (C16TAB) micelles depends on the alkyl chain lengths n. From deep (n = 15) to shallow (n = 3), DPAC-Fn in C16TAB micelles exhibits efficient viscosity-sensitive dynamic multicolor emissions. With external standards for quantification, the viscosity distribution inside a C16TAB micelle with the size of ∼4 nm is changed seriously from high viscosity (∼190 Pa s) in the core center to low viscosity (∼1 Pa s) near the outer surface. This work provides a tailored approach for powerful micelle tools to explore the depth-dependent microviscosity of micellar interiors.
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Affiliation(s)
- Xuanying Chen
- Key Laboratory for Advanced Materials and Feringa Nobel Prize Scientist Joint Research Center, Frontiers Science Center for Materiobiology and Dynamic Chemistry, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Shideng Yuan
- Key Lab of Colloid and Interface Chemistry, Shandong University, Jinan 250100, China
| | - Mengyuan Qiao
- Key Laboratory for Advanced Materials and Feringa Nobel Prize Scientist Joint Research Center, Frontiers Science Center for Materiobiology and Dynamic Chemistry, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Xin Jin
- Key Laboratory for Advanced Materials and Feringa Nobel Prize Scientist Joint Research Center, Frontiers Science Center for Materiobiology and Dynamic Chemistry, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Jiacheng Chen
- Key Laboratory for Advanced Materials and Feringa Nobel Prize Scientist Joint Research Center, Frontiers Science Center for Materiobiology and Dynamic Chemistry, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Lifang Guo
- Key Laboratory for Advanced Materials and Feringa Nobel Prize Scientist Joint Research Center, Frontiers Science Center for Materiobiology and Dynamic Chemistry, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Jianhua Su
- Key Laboratory for Advanced Materials and Feringa Nobel Prize Scientist Joint Research Center, Frontiers Science Center for Materiobiology and Dynamic Chemistry, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Da-Hui Qu
- Key Laboratory for Advanced Materials and Feringa Nobel Prize Scientist Joint Research Center, Frontiers Science Center for Materiobiology and Dynamic Chemistry, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Zhiyun Zhang
- Key Laboratory for Advanced Materials and Feringa Nobel Prize Scientist Joint Research Center, Frontiers Science Center for Materiobiology and Dynamic Chemistry, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, China
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7
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Wu X, Barner-Kowollik C. Fluorescence-readout as a powerful macromolecular characterisation tool. Chem Sci 2023; 14:12815-12849. [PMID: 38023522 PMCID: PMC10664555 DOI: 10.1039/d3sc04052f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2023] [Accepted: 10/10/2023] [Indexed: 12/01/2023] Open
Abstract
The last few decades have witnessed significant progress in synthetic macromolecular chemistry, which can provide access to diverse macromolecules with varying structural complexities, topology and functionalities, bringing us closer to the aim of controlling soft matter material properties with molecular precision. To reach this goal, the development of advanced analytical techniques, allowing for micro-, molecular level and real-time investigation, is essential. Due to their appealing features, including high sensitivity, large contrast, fast and real-time response, as well as non-invasive characteristics, fluorescence-based techniques have emerged as a powerful tool for macromolecular characterisation to provide detailed information and give new and deep insights beyond those offered by commonly applied analytical methods. Herein, we critically examine how fluorescence phenomena, principles and techniques can be effectively exploited to characterise macromolecules and soft matter materials and to further unravel their constitution, by highlighting representative examples of recent advances across major areas of polymer and materials science, ranging from polymer molecular weight and conversion, architecture, conformation to polymer self-assembly to surfaces, gels and 3D printing. Finally, we discuss the opportunities for fluorescence-readout to further advance the development of macromolecules, leading to the design of polymers and soft matter materials with pre-determined and adaptable properties.
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Affiliation(s)
- Xingyu Wu
- School of Chemistry and Physics, Centre for Materials Science, Queensland University of Technology (QUT) 2 George Street Brisbane QLD 4000 Australia
| | - Christopher Barner-Kowollik
- School of Chemistry and Physics, Centre for Materials Science, Queensland University of Technology (QUT) 2 George Street Brisbane QLD 4000 Australia
- Institute of Nanotechnology (INT), Karlsruhe Institute of Technology (KIT) Hermann-von-Helmholtz-Platz 1 76344 Eggenstein-Leopoldshafen Germany
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8
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Uchacz T, Maroń AM, Szlachcic P, Danel A, Pokladko-Kowar M, Gondek E, Kolek P, Zapotoczny S, Stadnicka KM. Photoinduced charge transfer in push-pull pyrazoline-based chromophores - Relationship between molecular structure and photophysical, photovoltaic properties. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2023; 296:122643. [PMID: 37001263 DOI: 10.1016/j.saa.2023.122643] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/04/2023] [Revised: 02/20/2023] [Accepted: 03/15/2023] [Indexed: 06/19/2023]
Abstract
The manuscript describes the effect of molecular structure on the photophysical and photovoltaic properties of the pyrazoline-based donor-branched-π-system-acceptor compounds decorated with two end groups: phenyl or thiophene. Although the absorption to the first singlet excited state is strongly allowed, the emission quantum yield is low in all studied solvents. This behaviour was explained by the existence of two non-radiative deactivation channels: the back electron transfer process, especially operated in polar solvents, and internal conversion realized as the rotation of flexible rotors (cyano, keto phenyl or thiophene). The feasibility of the photoinduced electron transfer process was corroborated by electrochemical, spectroelectrochemical measurements as well as DFT calculations. DFT calculations also support the existence of multiple conformations in the ground state, which differ from one another in terms of charge distribution and the values of ground state dipole moment. Finally, the mechanism of the singlet excited state deactivation of the studied compounds was determined by ultrafast pump-probe measurements. Our studies revealed that charge/electron transfer process may undergo over carbonyl bridge, included in branched π-system. Moreover, the thiophene decorated pyrazoline is characterized by a better photovoltaic power conversion efficiency, while the phenyl-ended pyrazoline can be applied as a viscosity sensor.
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Affiliation(s)
- Tomasz Uchacz
- Faculty of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387 Kraków, Poland.
| | - Anna M Maroń
- Institute of Chemistry, University of Silesia, Szkolna 9, 40-006 Katowice, Poland
| | - Paweł Szlachcic
- Department of Chemistry, Faculty of Food Technology, University of Agriculture in Krakow, Balicka 122, 31-149 Kraków, Poland
| | - Andrzej Danel
- Faculty of Material Engineering and Physics, Cracow University of Technology, Podchorążych 1, 30-084 Kraków, Poland
| | - Monika Pokladko-Kowar
- Faculty of Material Engineering and Physics, Cracow University of Technology, Podchorążych 1, 30-084 Kraków, Poland
| | - Ewa Gondek
- Faculty of Material Engineering and Physics, Cracow University of Technology, Podchorążych 1, 30-084 Kraków, Poland
| | - Przemysław Kolek
- Institute of Physics, University of Rzeszów, 1 Pigonia Street, PL-35-310 Rzeszów, Poland
| | - Szczepan Zapotoczny
- Faculty of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387 Kraków, Poland
| | - Katarzyna M Stadnicka
- Faculty of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387 Kraków, Poland
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9
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Ni Y, Fang W, Olson MA. Fluorescent Molecular Rotors Based on Hinged Anthracene Carboxyimides. Molecules 2023; 28:molecules28073217. [PMID: 37049979 PMCID: PMC10096540 DOI: 10.3390/molecules28073217] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2023] [Revised: 03/20/2023] [Accepted: 03/30/2023] [Indexed: 04/14/2023] Open
Abstract
Temperature and viscosity are essential parameters in medicine, environmental science, smart materials, and biology. However, few fluorescent sensor publications mention the direct relationship between temperature and viscosity. Three anthracene carboxyimide-based fluorescent molecular rotors, 1DiAC∙Cl, 2DiAC∙Cl, and 9DiAC∙Cl, were designed and synthesized. Their photophysical properties were studied in various solvents, such as N, N-dimethylacetamide, N, N-dimethylformamide, 1-propanol, ethanol, dimethyl sulfoxide, methanol, and water. Solvent polarizability resulted in a solvatochromism effect for all three rotors and their absorption and emission spectra were analyzed via the Lippert-Mataga equation and multilinear analysis using Kamlet-Taft and Catalán parameters. The rotors exhibited red-shifted absorption and emission bands in solution on account of differences in their torsion angle. The three rotors demonstrated strong fluorescence in a high-viscosity environment due to restricted intramolecular rotation. Investigations carried out under varying ratios of water to glycerol were explored to probe the viscosity-based changes in their optical properties. A good linear correlation between the logarithms of fluorescence intensity and solution viscosity for two rotors, namely 2DiAC∙Cl and 9DiAC∙Cl, was observed as the percentage of glycerol increased. Excellent exponential regression between the viscosity-related temperature and emission intensity was observed for all three investigated rotors.
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Affiliation(s)
- Yanhai Ni
- School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, China
| | - Wangjian Fang
- School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, China
| | - Mark A Olson
- Department of Physical and Environmental Sciences, Texas A&M University Corpus Christi, Corpus Christi, TX 78412, USA
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10
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Bulthuis EP, Dieteren CEJ, Bergmans J, Berkhout J, Wagenaars JA, van de Westerlo EMA, Podhumljak E, Hink MA, Hesp LFB, Rosa HS, Malik AN, Lindert MKT, Willems PHGM, Gardeniers HJGE, den Otter WK, Adjobo-Hermans MJW, Koopman WJH. Stress-dependent macromolecular crowding in the mitochondrial matrix. EMBO J 2023; 42:e108533. [PMID: 36825437 PMCID: PMC10068333 DOI: 10.15252/embj.2021108533] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2021] [Revised: 01/10/2023] [Accepted: 01/19/2023] [Indexed: 02/25/2023] Open
Abstract
Macromolecules of various sizes induce crowding of the cellular environment. This crowding impacts on biochemical reactions by increasing solvent viscosity, decreasing the water-accessible volume and altering protein shape, function, and interactions. Although mitochondria represent highly protein-rich organelles, most of these proteins are somehow immobilized. Therefore, whether the mitochondrial matrix solvent exhibits macromolecular crowding is still unclear. Here, we demonstrate that fluorescent protein fusion peptides (AcGFP1 concatemers) in the mitochondrial matrix of HeLa cells display an elongated molecular structure and that their diffusion constant decreases with increasing molecular weight in a manner typical of macromolecular crowding. Chloramphenicol (CAP) treatment impaired mitochondrial function and reduced the number of cristae without triggering mitochondrial orthodox-to-condensed transition or a mitochondrial unfolded protein response. CAP-treated cells displayed progressive concatemer immobilization with increasing molecular weight and an eightfold matrix viscosity increase, compatible with increased macromolecular crowding. These results establish that the matrix solvent exhibits macromolecular crowding in functional and dysfunctional mitochondria. Therefore, changes in matrix crowding likely affect matrix biochemical reactions in a manner depending on the molecular weight of the involved crowders and reactants.
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Affiliation(s)
- Elianne P Bulthuis
- Department of Biochemistry, Radboud Institute for Molecular Life Sciences (RIMLS), Radboud Center for Mitochondrial Medicine (RCMM), Radboud University Medical Centre (Radboudumc), Nijmegen, The Netherlands
| | - Cindy E J Dieteren
- Department of Biochemistry, Radboud Institute for Molecular Life Sciences (RIMLS), Radboud Center for Mitochondrial Medicine (RCMM), Radboud University Medical Centre (Radboudumc), Nijmegen, The Netherlands.,Department of Cell Biology and Electron Microscopy Center, Radboudumc, Nijmegen, The Netherlands
| | - Jesper Bergmans
- Department of Pediatrics, Amalia Children's Hospital, Radboud Institute for Molecular Life Sciences (RIMLS), Radboud Center for Mitochondrial Medicine (RCMM), Radboud University Medical Center (Radboudumc), Nijmegen, The Netherlands
| | - Job Berkhout
- Department of Biochemistry, Radboud Institute for Molecular Life Sciences (RIMLS), Radboud Center for Mitochondrial Medicine (RCMM), Radboud University Medical Centre (Radboudumc), Nijmegen, The Netherlands
| | - Jori A Wagenaars
- Department of Biochemistry, Radboud Institute for Molecular Life Sciences (RIMLS), Radboud Center for Mitochondrial Medicine (RCMM), Radboud University Medical Centre (Radboudumc), Nijmegen, The Netherlands
| | - Els M A van de Westerlo
- Department of Biochemistry, Radboud Institute for Molecular Life Sciences (RIMLS), Radboud Center for Mitochondrial Medicine (RCMM), Radboud University Medical Centre (Radboudumc), Nijmegen, The Netherlands
| | - Emina Podhumljak
- Department of Biochemistry, Radboud Institute for Molecular Life Sciences (RIMLS), Radboud Center for Mitochondrial Medicine (RCMM), Radboud University Medical Centre (Radboudumc), Nijmegen, The Netherlands
| | - Mark A Hink
- Swammerdam Institute for Life Sciences, University of Amsterdam, Amsterdam, The Netherlands
| | - Laura F B Hesp
- Department of Biochemistry, Radboud Institute for Molecular Life Sciences (RIMLS), Radboud Center for Mitochondrial Medicine (RCMM), Radboud University Medical Centre (Radboudumc), Nijmegen, The Netherlands
| | - Hannah S Rosa
- Department of Diabetes, King's College London, London, UK
| | - Afshan N Malik
- Department of Diabetes, King's College London, London, UK
| | - Mariska Kea-Te Lindert
- Department of Cell Biology and Electron Microscopy Center, Radboudumc, Nijmegen, The Netherlands
| | - Peter H G M Willems
- Department of Biochemistry, Radboud Institute for Molecular Life Sciences (RIMLS), Radboud Center for Mitochondrial Medicine (RCMM), Radboud University Medical Centre (Radboudumc), Nijmegen, The Netherlands
| | - Han J G E Gardeniers
- Mesoscale Chemical Systems, University of Twente, Enschede, The Netherlands.,MESA+ Institute for Nanotechnology, University of Twente, Enschede, The Netherlands
| | - Wouter K den Otter
- MESA+ Institute for Nanotechnology, University of Twente, Enschede, The Netherlands.,Thermal and Fluid Engineering, Faculty of Engineering Technology, University of Twente, Enschede, The Netherlands
| | - Merel J W Adjobo-Hermans
- Department of Biochemistry, Radboud Institute for Molecular Life Sciences (RIMLS), Radboud Center for Mitochondrial Medicine (RCMM), Radboud University Medical Centre (Radboudumc), Nijmegen, The Netherlands
| | - Werner J H Koopman
- Department of Pediatrics, Amalia Children's Hospital, Radboud Institute for Molecular Life Sciences (RIMLS), Radboud Center for Mitochondrial Medicine (RCMM), Radboud University Medical Center (Radboudumc), Nijmegen, The Netherlands.,Human and Animal Physiology, Wageningen University, Wageningen, The Netherlands
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11
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Xu L, Xu W, Tian Z, Deng F, Huang Y. Sustainable natural chlorogenic acid as a functional molecular sensor toward viscosity detection in liquids. PHOTOCHEMICAL & PHOTOBIOLOGICAL SCIENCES : OFFICIAL JOURNAL OF THE EUROPEAN PHOTOCHEMISTRY ASSOCIATION AND THE EUROPEAN SOCIETY FOR PHOTOBIOLOGY 2023:10.1007/s43630-023-00365-w. [PMID: 36694012 DOI: 10.1007/s43630-023-00365-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/17/2022] [Accepted: 01/11/2023] [Indexed: 01/26/2023]
Abstract
Liquids are perishable at ease during the long-term transportation and storage processes, non-invasive and in situ inspection method is urgent to be developed. In consideration of the important role of viscosity, one kind of sustainable natural product chlorogenic acid (CA) extracted from honeysuckle has been used as a versatile optical sensor for viscosity determination during the liquid spoilage process. The natural molecule was conducted by the O-diphenyl and carboxylic acid ester groups in coincidence, a typical twisted intramolecular charge transfer phenomenon was formed. This sensor features wide adaptability, high selectivity, good sensitivity, and excellent photo stability in various liquids. And CA displays a larger Stokes shift, high viscosity sensitive coefficient (0.62), and narrower energy band. The rotatable conjugate structure can be acted as the recognition site, and the bright fluorescent signal of CA is specifically activated when in the high viscous micro-environment. Inspired by this objective phenomenon, CA has been applied to detect the thickening efficiency of various food thickeners. More importantly, the viscosity fluctuations during the deterioration stage of liquids can be screened through non-invasive and in situ monitoring. We expected that more natural products can be developed as molecular tools for liquids safety investigation, and fluorescent analytical methods can be expanded toward interdisciplinary research.
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Affiliation(s)
- Lingfeng Xu
- Key Laboratory of Biodiversity and Ecological Engineering of Jiangxi Province, Jinggangshan University, Ji'an, 343009, Jiangxi, China. .,State Key Laboratory of Luminescent Materials and Devices, College of Materials Science and Engineering, South China University of Technology, Guangzhou, 510640, China.
| | - Wenyan Xu
- Key Laboratory of Biodiversity and Ecological Engineering of Jiangxi Province, Jinggangshan University, Ji'an, 343009, Jiangxi, China
| | - Ziyin Tian
- Key Laboratory of Biodiversity and Ecological Engineering of Jiangxi Province, Jinggangshan University, Ji'an, 343009, Jiangxi, China
| | - Fei Deng
- Key Laboratory of Biodiversity and Ecological Engineering of Jiangxi Province, Jinggangshan University, Ji'an, 343009, Jiangxi, China
| | - Yanrong Huang
- School of Food Science and Engineering, Guangdong Province Key Laboratory for Green Processing of Natural Products and Product Safety, South China University of Technology, Guangzhou, 510640, China
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12
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Garci A, David AHG, Le Bras L, Ovalle M, Abid S, Young RM, Liu W, Azad CS, Brown PJ, Wasielewski MR, Stoddart JF. Thermally Controlled Exciplex Fluorescence in a Dynamic Homo[2]catenane. J Am Chem Soc 2022; 144:23551-23559. [PMID: 36512436 DOI: 10.1021/jacs.2c10591] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Motion-induced change in emission (MICE) is a phenomenon that can be employed to develop various types of probes, including temperature and viscosity sensors. Although MICE, arising from the conformational motion in particular compounds, has been studied extensively, this phenomenon has not been investigated in depth in mechanically interlocked molecules (MIMs) undergoing coconformational changes. Herein, we report the investigation of a thermoresponsive dynamic homo[2]catenane incorporating pyrene units and displaying relative circumrotational motions of its cyclophanes as evidenced by variable-temperature 1H NMR spectroscopy and supported by its visualization through molecular dynamics simulations and quantum mechanics calculations. The relative coconformational motions induce a significant change in the fluorescence emission of the homo[2]catenane upon changes in temperature compared with its component cyclophanes. This variation in the exciplex emission of the homo[2]catenane is reversible as demonstrated by four complete cooling and heating cycles. This research opens up possibilities of using the coconformational changes in MIMs-based chromophores for probing fluctuations in temperature which could lead to applications in biomedicine or materials science.
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Affiliation(s)
- Amine Garci
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - Arthur H G David
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - Laura Le Bras
- Laboratoire Chrono-environnement (UMR 6249), Université de Bourgogne Franche-Comté, 16 route de Gray, 25030 Besançon, France
| | - Marco Ovalle
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - Seifallah Abid
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - Ryan M Young
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States.,Institute for Sustainability and Energy at Northwestern, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - Wenqi Liu
- Department of Chemistry, University of South Florida, Tampa, Florida 33620, United States
| | - Chandra S Azad
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - Paige J Brown
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States.,Institute for Sustainability and Energy at Northwestern, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - Michael R Wasielewski
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States.,Institute for Sustainability and Energy at Northwestern, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - J Fraser Stoddart
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States.,School of Chemistry, University of New South Wales, Sydney, NSW 2052, Australia.,Stoddart Institute of Molecular Science, Department of Chemistry, Zhejiang University, Hangzhou 310027, China.,ZJU-Hangzhou Global Scientific and Technological Innovation Center, Hangzhou 311215, China
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13
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Yu FT, Huang Z, Yang JX, Yang LM, Xu XY, Huang JY, Kong L. Two quinoline-based two-photon fluorescent probes for imaging of viscosity in subcellular organelles of living HeLa cells. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2022; 283:121769. [PMID: 36007347 DOI: 10.1016/j.saa.2022.121769] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/03/2022] [Revised: 08/06/2022] [Accepted: 08/15/2022] [Indexed: 06/15/2023]
Abstract
Two viscosity-sensitive two-photon fluorescent probes (QL and QLS) were designed and synthesized, which can be localized in lysosome and mitochondria in living HeLa cells, respectively. As the increases of viscosity from 2.55 to 1150 cP, the fluorescence quantum yield (Φ) of QL and QLS was increased by 28-fold and 37-fold, respectively. At the same time, its effective two-photon absorption cross section (ΦδTPA) was enhanced by 15-fold and 16-fold, respectively. Fluorescence lifetime imaging (FLIM) of living HeLa cells stained with QL and QLS, revealed that lysosomal viscosity ranged from 100.76 to 254.74 cP and mitochondrial viscosity ranged from 92.21 to 286.79 cP. This type of fluorescent probe is helpful in the design and application of materials for monitoring diseases associated with abnormal viscosity.
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Affiliation(s)
- Feng-Tao Yu
- College of Chemistry and Chemical Engineering, Key Laboratory of Structure and Functional Regulation of Hybrid Materials (Anhui University), Ministry of Education, Photoelectric conversion energy materials and devices Key Laboratory of Anhui Province, Anhui University, Hefei 230039, PR China
| | - Ze Huang
- College of Chemistry and Chemical Engineering, Key Laboratory of Structure and Functional Regulation of Hybrid Materials (Anhui University), Ministry of Education, Photoelectric conversion energy materials and devices Key Laboratory of Anhui Province, Anhui University, Hefei 230039, PR China
| | - Jia-Xiang Yang
- College of Chemistry and Chemical Engineering, Key Laboratory of Structure and Functional Regulation of Hybrid Materials (Anhui University), Ministry of Education, Photoelectric conversion energy materials and devices Key Laboratory of Anhui Province, Anhui University, Hefei 230039, PR China
| | - Long-Mei Yang
- College of Chemistry and Chemical Engineering, Key Laboratory of Structure and Functional Regulation of Hybrid Materials (Anhui University), Ministry of Education, Photoelectric conversion energy materials and devices Key Laboratory of Anhui Province, Anhui University, Hefei 230039, PR China
| | - Xian-Yun Xu
- College of Chemistry and Chemical Engineering, Key Laboratory of Structure and Functional Regulation of Hybrid Materials (Anhui University), Ministry of Education, Photoelectric conversion energy materials and devices Key Laboratory of Anhui Province, Anhui University, Hefei 230039, PR China
| | - Jian-Yan Huang
- College of Chemistry and Chemical Engineering, Key Laboratory of Structure and Functional Regulation of Hybrid Materials (Anhui University), Ministry of Education, Photoelectric conversion energy materials and devices Key Laboratory of Anhui Province, Anhui University, Hefei 230039, PR China
| | - Lin Kong
- College of Chemistry and Chemical Engineering, Key Laboratory of Structure and Functional Regulation of Hybrid Materials (Anhui University), Ministry of Education, Photoelectric conversion energy materials and devices Key Laboratory of Anhui Province, Anhui University, Hefei 230039, PR China.
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14
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Martínez-Bourget D, Rocha E, Labra-Vázquez P, Santillan R, Ortiz-López B, Ortiz-Navarrete V, Maraval V, Chauvin R, Farfán N. BODIPY-Ethynylestradiol molecular rotors as fluorescent viscosity probes in endoplasmic reticulum. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2022; 283:121704. [PMID: 35985231 DOI: 10.1016/j.saa.2022.121704] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/20/2022] [Revised: 07/20/2022] [Accepted: 07/29/2022] [Indexed: 06/15/2023]
Abstract
Due to their capability for sensing changes in viscosity, fluorescent molecular rotors (FMRs) have emerged as potential tools to develop several promising viscosity probes; most of them, however, localize non-selectively within cells, precluding changes in the viscosity of specific cellular microdomains to be studied by these means. Following previous reports on enhanced fluorophore uptake efficiency and selectivity by incorporation of biological submolecular fragments, here we report two potential BODIPY FMRs based on an ethynylestradiol spindle, a non-cytotoxic semisynthetic estrogen well recognized by human cells. A critical evaluation of the potential of these fluorophores for being employed as FMRs is presented, including the photophysical characterization of the probes, SXRD studies and TD-DFT computations, as well as confocal microscopy imaging in MCF-7 (breast cancer) cells.
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Affiliation(s)
- Diego Martínez-Bourget
- Facultad de Química, Departamento de Química Orgánica, Universidad Nacional Autónoma de México, Coyoacán 04510, CDMX, México
| | - Erika Rocha
- Facultad de Química, Departamento de Química Orgánica, Universidad Nacional Autónoma de México, Coyoacán 04510, CDMX, México
| | - Pablo Labra-Vázquez
- CNRS, LCC (Laboratoire de Chimie de Coordination), 205 route de Narbonne, 31077 Toulouse, France
| | - Rosa Santillan
- Departamento de Química, Centro de Investigación y de Estudios Avanzados del IPN, Apdo. Postal 14-740, 07000, México
| | - Benjamín Ortiz-López
- Departamento de Biomedicina Molecular, Centro de Investigación y de Estudios Avanzados del IPN, CINVESTAV, Apdo., Postal 14-740, México, D.F. 07000, Mexico
| | - Vianney Ortiz-Navarrete
- Departamento de Biomedicina Molecular, Centro de Investigación y de Estudios Avanzados del IPN, CINVESTAV, Apdo., Postal 14-740, México, D.F. 07000, Mexico
| | - Valérie Maraval
- CNRS, LCC (Laboratoire de Chimie de Coordination), 205 route de Narbonne, 31077 Toulouse, France
| | - Remi Chauvin
- CNRS, LCC (Laboratoire de Chimie de Coordination), 205 route de Narbonne, 31077 Toulouse, France
| | - Norberto Farfán
- Facultad de Química, Departamento de Química Orgánica, Universidad Nacional Autónoma de México, Coyoacán 04510, CDMX, México.
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15
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Liu X, Yamazaki T, Kwon HY, Arai S, Chang YT. A palette of site-specific organelle fluorescent thermometers. Mater Today Bio 2022; 16:100405. [PMID: 36060107 PMCID: PMC9434161 DOI: 10.1016/j.mtbio.2022.100405] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2022] [Revised: 08/15/2022] [Accepted: 08/16/2022] [Indexed: 11/04/2022] Open
Abstract
Intracellular micro-temperature is closely related to cellular processes. Such local temperature inside cells can be measured by fluorescent thermometers, which are a series of fluorescent materials that convert the temperature information to detectable fluorescence signals. To investigate the intracellular temperature fluctuation in various organelles, it is essential to develop site-specific organelle thermometers. In this study, we develop a new series of fluorescent thermometers, Thermo Greens (TGs), to visualize the temperature change in almost all typical organelles. Through fluorescence lifetime-based cell imaging, it was proven that TGs allow the organelle-specific monitoring of temperature gradients created by external heating. The fluorescence lifetime-based thermometry shows that each organelle experiences a distinct temperature increment which depends on the distance away from the heat source. TGs are further demonstrated in the quantitative imaging of heat production at different organelles such as mitochondria and endoplasmic reticulum in brown adipocytes. To date, TGs are the first palette batch of small molecular fluorescent thermometers that can cover almost all typical organelles. These findings can inspire the development of new fluorescent thermometers and enhance the understanding of thermal biology in the future.
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Affiliation(s)
- Xiao Liu
- Center for Self-assembly and Complexity, Institute for Basic Science (IBS), Pohang, Gyeongbuk, 37673, South Korea
- Department of Chemistry, Pohang University of Science and Technology (POSTECH), Pohang, Gyeongbuk, 37673, South Korea
| | - Takeru Yamazaki
- WPI Nano Life Science Institute, Kanazawa University, Kakuma-machi, Kanazawa, 920-1192, Japan
| | - Haw-Young Kwon
- Center for Self-assembly and Complexity, Institute for Basic Science (IBS), Pohang, Gyeongbuk, 37673, South Korea
| | - Satoshi Arai
- WPI Nano Life Science Institute, Kanazawa University, Kakuma-machi, Kanazawa, 920-1192, Japan
| | - Young-Tae Chang
- Center for Self-assembly and Complexity, Institute for Basic Science (IBS), Pohang, Gyeongbuk, 37673, South Korea
- Department of Chemistry, Pohang University of Science and Technology (POSTECH), Pohang, Gyeongbuk, 37673, South Korea
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16
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Dara A, Mast DM, Razgoniaev AO, Hauke CE, Castellano FN, Ostrowski AD. Real-Time and In Situ Viscosity Monitoring in Industrial Adhesives Using Luminescent Cu(I) Phenanthroline Molecular Sensors. ACS APPLIED MATERIALS & INTERFACES 2022; 14:33976-33983. [PMID: 35830615 DOI: 10.1021/acsami.2c06554] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Monitoring the viscosity of polymers in real-time remains a challenge, especially in confined environments where traditional rheological measurements are hard to apply. In this study, we have utilized the luminescent complex [Cu(diptmp)2]+ (diptmp = 2,9-diisopropyl-3,4,7,8-tetramethyl-1,10-phenanthroline) as an optical probe for real-time sensing of viscosity in various adhesives during the curing process (viscosity increases). The emission lifetime of the triplet metal-to-ligand charge transfer (3MLCT) state of [Cu(diptmp)2]+ in epoxy adhesive increased exponentially during curing, similar to viscosity values obtained from oscillatory rheology. The longer lifetime in higher viscosity materials was attributed to changes in the excited-state deactivation processes from a known Jahn-Teller distortion in the Cu(I) geometry from tetrahedral in the ground state to square planar in the excited state. The real-time viscosity was also monitored reversibly by emission lifetime during polymer swelling (viscosity and lifetime decrease) and unswelling (viscosity and lifetime increase). Monitoring emission lifetime, unlike measuring the excited-state lifetime via transient absorption measurements in our previous study, allowed us to measure viscosity in opaque samples which scatter light. The optical probe [Cu(diptmp)2]+ in Gorilla Glue adhesive showed a clear correlation of the emission intensity or lifetime to viscosity during the curing process. We have also compared these lifetime changes using [Ru(bpy)3]2+ (bpy = bipyridine) as a control. [Cu(diptmp)2]+ showed not only a higher emission lifetime but also more ubiquity as a real-time viscosity sensor.
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Affiliation(s)
- Ankit Dara
- Department of Chemistry and Center for Photochemical Sciences, Bowling Green State University, Bowling Green, Ohio 43403 United States
| | - Derek M Mast
- Department of Chemistry and Center for Photochemical Sciences, Bowling Green State University, Bowling Green, Ohio 43403 United States
| | - Anton O Razgoniaev
- Department of Chemistry and Center for Photochemical Sciences, Bowling Green State University, Bowling Green, Ohio 43403 United States
| | - Cory E Hauke
- Department of Chemistry, North Carolina State University, Raleigh, North Carolina 27695-8204, United States
| | - Felix N Castellano
- Department of Chemistry, North Carolina State University, Raleigh, North Carolina 27695-8204, United States
| | - Alexis D Ostrowski
- Department of Chemistry and Center for Photochemical Sciences, Bowling Green State University, Bowling Green, Ohio 43403 United States
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17
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Fu GQ, Liao QT, Wang ZQ, Tan ZK, Mao GJ, Yang B, Li CY. A HPQ-based far-red fluorescent probe for monitoring viscosity in mice model of acute inflammation. Anal Chim Acta 2022; 1226:340192. [DOI: 10.1016/j.aca.2022.340192] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2022] [Revised: 07/15/2022] [Accepted: 07/19/2022] [Indexed: 11/28/2022]
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18
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Ji L, Riese S, Schmiedel A, Holzapfel M, Fest M, Nitsch J, Curchod BFE, Friedrich A, Wu L, Al Mamari HH, Hammer S, Pflaum J, Fox MA, Tozer DJ, Finze M, Lambert C, Marder TB. Thermodynamic equilibrium between locally excited and charge-transfer states through thermally activated charge transfer in 1-(pyren-2'-yl)- o-carborane. Chem Sci 2022; 13:5205-5219. [PMID: 35655553 PMCID: PMC9093154 DOI: 10.1039/d1sc06867a] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2021] [Accepted: 03/24/2022] [Indexed: 02/02/2023] Open
Abstract
Reversible conversion between excited-states plays an important role in many photophysical phenomena. Using 1-(pyren-2'-yl)-o-carborane as a model, we studied the photoinduced reversible charge-transfer (CT) process and the thermodynamic equilibrium between the locally-excited (LE) state and CT state, by combining steady state, time-resolved, and temperature-dependent fluorescence spectroscopy, fs- and ns-transient absorption, and DFT and LR-TDDFT calculations. Our results show that the energy gaps and energy barriers between the LE, CT, and a non-emissive 'mixed' state of 1-(pyren-2'-yl)-o-carborane are very small, and all three excited states are accessible at room temperature. The internal-conversion and reverse internal-conversion between LE and CT states are significantly faster than the radiative decay, and the two states have the same lifetimes and are in thermodynamic equilibrium.
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Affiliation(s)
- Lei Ji
- Frontiers Science Center for Flexible Electronics, Xi'an Institute of Flexible Electronics (IFE), Northwestern Polytechnical University 127 West Youyi Road Xi'an Shaanxi China
- Institut für Anorganische Chemie and Institute for Sustainable Chemistry & Catalysis with Boron, Julius-Maximilians-Universität Würzburg Am Hubland 97074 Würzburg Germany
| | - Stefan Riese
- Institut für Organische Chemie, Julius-Maximilians-Universität Würzburg Am Hubland 97074 Würzburg Germany
| | - Alexander Schmiedel
- Institut für Organische Chemie, Julius-Maximilians-Universität Würzburg Am Hubland 97074 Würzburg Germany
| | - Marco Holzapfel
- Institut für Organische Chemie, Julius-Maximilians-Universität Würzburg Am Hubland 97074 Würzburg Germany
| | - Maximillian Fest
- Institut für Anorganische Chemie and Institute for Sustainable Chemistry & Catalysis with Boron, Julius-Maximilians-Universität Würzburg Am Hubland 97074 Würzburg Germany
| | - Jörn Nitsch
- Institut für Anorganische Chemie and Institute for Sustainable Chemistry & Catalysis with Boron, Julius-Maximilians-Universität Würzburg Am Hubland 97074 Würzburg Germany
| | - Basile F E Curchod
- Department of Chemistry, University of Durham South Road Durham DH1 3LE UK
| | - Alexandra Friedrich
- Institut für Anorganische Chemie and Institute for Sustainable Chemistry & Catalysis with Boron, Julius-Maximilians-Universität Würzburg Am Hubland 97074 Würzburg Germany
| | - Lin Wu
- Frontiers Science Center for Flexible Electronics, Xi'an Institute of Flexible Electronics (IFE), Northwestern Polytechnical University 127 West Youyi Road Xi'an Shaanxi China
| | - Hamad H Al Mamari
- Institut für Anorganische Chemie and Institute for Sustainable Chemistry & Catalysis with Boron, Julius-Maximilians-Universität Würzburg Am Hubland 97074 Würzburg Germany
- Department of Chemistry, College of Science, Sultan Qaboos University PO Box 36, Al Khoudh 123 Muscat Sultanate of Oman
| | - Sebastian Hammer
- Experimentelle Physik VI, Julius-Maximilians-Universität Würzburg Am Hubland 97074 Würzburg Germany
| | - Jens Pflaum
- Experimentelle Physik VI, Julius-Maximilians-Universität Würzburg Am Hubland 97074 Würzburg Germany
| | - Mark A Fox
- Department of Chemistry, University of Durham South Road Durham DH1 3LE UK
| | - David J Tozer
- Department of Chemistry, University of Durham South Road Durham DH1 3LE UK
| | - Maik Finze
- Institut für Anorganische Chemie and Institute for Sustainable Chemistry & Catalysis with Boron, Julius-Maximilians-Universität Würzburg Am Hubland 97074 Würzburg Germany
| | - Christoph Lambert
- Institut für Organische Chemie, Julius-Maximilians-Universität Würzburg Am Hubland 97074 Würzburg Germany
| | - Todd B Marder
- Institut für Anorganische Chemie and Institute for Sustainable Chemistry & Catalysis with Boron, Julius-Maximilians-Universität Würzburg Am Hubland 97074 Würzburg Germany
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19
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Fiuza RMD, Padilha J, Maqueira L, Aucélio RQ, Limberger J. Synthesis and application of a highly fluorescent styryl-benzothiadiazole derivative as a chemosensor for ethanol in hydroalcoholic solutions. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2022; 271:120913. [PMID: 35077981 DOI: 10.1016/j.saa.2022.120913] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/04/2021] [Revised: 12/31/2021] [Accepted: 01/15/2022] [Indexed: 06/14/2023]
Abstract
Two fluorescent D-A-D styryl-benzothiadiazole fluorophores possessing either styryl-BTD-styryl (2) or aryl-BTD-styryl (4) architectures have been synthesized using Heck reactions as key step. Compounds presented absorption in blue region and emission ranging from 531 to 560 nm with positive solvatochromism. Lippert Mattaga plots indicated a substantial effect of solvent polarity over the emission profile. As the fluorescence of the compound 4 was more sensitive to changes in the environment, this compound was evaluated as a probe to chemosensing etanol/water percentage in hydroalcoholic solutions. Good linearity was observed between fluorescence intensity and ethanol content in the range from 40% to 90%. Analyses of commercial solutions of sanitizers and cleaning products (% ethanol = 46%, 70% and 92%) indicate that reference values are within the confidence interval of experimental results produced by the proposed method.
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Affiliation(s)
- Raquel Mazolli da Fiuza
- Department of Chemistry, Pontifical Catholic University of Rio de Janeiro, Rua Marquês de São Vicente, 225, Gávea, 22451-900, Rio de Janeiro-RJ, Brazil
| | - Juliana Padilha
- Department of Chemistry, Pontifical Catholic University of Rio de Janeiro, Rua Marquês de São Vicente, 225, Gávea, 22451-900, Rio de Janeiro-RJ, Brazil
| | - Luis Maqueira
- Department of Chemistry, Pontifical Catholic University of Rio de Janeiro, Rua Marquês de São Vicente, 225, Gávea, 22451-900, Rio de Janeiro-RJ, Brazil
| | - Ricardo Q Aucélio
- Department of Chemistry, Pontifical Catholic University of Rio de Janeiro, Rua Marquês de São Vicente, 225, Gávea, 22451-900, Rio de Janeiro-RJ, Brazil
| | - Jones Limberger
- Department of Chemistry, Pontifical Catholic University of Rio de Janeiro, Rua Marquês de São Vicente, 225, Gávea, 22451-900, Rio de Janeiro-RJ, Brazil.
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20
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Wu X, Belqat M, Leuschel B, Noirbent G, Dumur F, Mougin K, Spangenberg A. Investigation of two-photon polymerized microstructures using fluorescence lifetime measurements. Polym Chem 2022. [DOI: 10.1039/d1py01728d] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
A fluorescent molecular rotor is exploited as a viscosity probe to reveal heterogeneity in multi-material microstructures made by two-photon polymerization. These results open the door to probe the 4D character of active 3D microstructures.
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Affiliation(s)
- Xingyu Wu
- Institut de Science des Matériaux de Mulhouse (IS2M), CNRS – UMR 7361, Université de Haute Alsace, France Université de Strasbourg, 15 rue Jean Starcky, 68057 Mulhouse, France
| | - Mehdi Belqat
- Institut de Science des Matériaux de Mulhouse (IS2M), CNRS – UMR 7361, Université de Haute Alsace, France Université de Strasbourg, 15 rue Jean Starcky, 68057 Mulhouse, France
| | - Benjamin Leuschel
- Institut de Science des Matériaux de Mulhouse (IS2M), CNRS – UMR 7361, Université de Haute Alsace, France Université de Strasbourg, 15 rue Jean Starcky, 68057 Mulhouse, France
| | | | - Frédéric Dumur
- Aix Marseille Univ, CNRS, ICR, UMR 7273, F-13397 Marseille, France
| | - Karine Mougin
- Institut de Science des Matériaux de Mulhouse (IS2M), CNRS – UMR 7361, Université de Haute Alsace, France Université de Strasbourg, 15 rue Jean Starcky, 68057 Mulhouse, France
| | - Arnaud Spangenberg
- Institut de Science des Matériaux de Mulhouse (IS2M), CNRS – UMR 7361, Université de Haute Alsace, France Université de Strasbourg, 15 rue Jean Starcky, 68057 Mulhouse, France
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21
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Adrien V, Rayan G, Astafyeva K, Broutin I, Picard M, Fuchs P, Urbach W, Taulier N. How to best estimate the viscosity of lipid bilayers. Biophys Chem 2021; 281:106732. [PMID: 34844029 DOI: 10.1016/j.bpc.2021.106732] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2021] [Revised: 10/19/2021] [Accepted: 11/19/2021] [Indexed: 11/02/2022]
Abstract
The viscosity of lipid bilayers is a property relevant to biological function, as it affects the diffusion of membrane macromolecules. To determine its value, and hence portray the membrane, various literature-reported techniques lead to significantly different results. Herein we compare the results issuing from two widely used techniques to determine the viscosity of membranes: the Fluorescence Lifetime Imaging Microscopy (FLIM), and Fluorescence Recovery After Photobleaching (FRAP). FLIM relates the time of rotation of a molecular rotor inserted into the membrane to the macroscopic viscosity of a fluid. Whereas FRAP measures molecular diffusion coefficients. This approach is based on a hydrodynamic model connecting the mobility of a membrane inclusion to the viscosity of the membrane. We show that: This article emphasizes the pitfalls to be avoided and the rules to be observed in order to obtain a value of the bilayer viscosity that characterizes the bilayer instead of interactions between the bilayer and the embedded probe.
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Affiliation(s)
- Vladimir Adrien
- Laboratoire de Physique de l'École Normale Supérieure, ENS, Université PSL, CNRS, Sorbonne Université, Université de Paris, F-75005 Paris, France; Université de Paris, CNRS, Laboratoire CiTCoM, 75006 Paris, France; Sorbonne Université, AP-HP Department of Psychiatry, Hôpital Saint-Antoine, Paris, France
| | - Gamal Rayan
- Laboratoire de Physique de l'École Normale Supérieure, ENS, Université PSL, CNRS, Sorbonne Université, Université de Paris, F-75005 Paris, France.
| | - Ksenia Astafyeva
- Laboratoire de Physique de l'École Normale Supérieure, ENS, Université PSL, CNRS, Sorbonne Université, Université de Paris, F-75005 Paris, France
| | - Isabelle Broutin
- Université de Paris, CNRS, Laboratoire CiTCoM, 75006 Paris, France
| | - Martin Picard
- Université de Paris, Laboratoire de Biologie Physico-Chimique des Protéines Membranaires, CNRS UMR 7099, F-75005 Paris, France; Institut de Biologie Physico-Chimique, Fondation Edmond de Rothschild pour le développement de la recherche Scientifique, F-75005 Paris, France
| | - Patrick Fuchs
- Sorbonne Université, Ecole Normale Supérieure, PSL University, CNRS, Laboratoire des Biomolécules (LBM), 75005 Paris, France; Université de Paris, UFR Sciences du Vivant, 75013 Paris, France
| | - Wladimir Urbach
- Laboratoire de Physique de l'École Normale Supérieure, ENS, Université PSL, CNRS, Sorbonne Université, Université de Paris, F-75005 Paris, France; Sorbonne Université, CNRS, INSERM, Laboratoire d'Imagerie Biomédicale, LIB, F-75006 Paris, France
| | - Nicolas Taulier
- Sorbonne Université, CNRS, INSERM, Laboratoire d'Imagerie Biomédicale, LIB, F-75006 Paris, France
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22
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McTiernan CD, Zuñiga-Bustos M, Rosales-Rojas R, Barrias P, Griffith M, Poblete H, Sherin PS, López-Duarte I, Kuimova MK, Alarcon EI. Molecular rotors as reporters for viscosity of solutions of collagen like peptides. Phys Chem Chem Phys 2021; 23:24545-24549. [PMID: 34704576 DOI: 10.1039/d1cp04398f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We have studied the suitability of using a molecular rotor-based steady-state fluorometric assay for evaluating changes in both the conformation and the viscosity of collagen-like peptide solutions. Our results indicate that a positive charge incorporated on the hydrophobic tail of the BODIPY molecular rotor favours the dye specificity as a reporter for viscosity of these solutions.
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Affiliation(s)
- Christopher D McTiernan
- Division of Cardiac Surgery, University of Ottawa Heart Institute, 40 Ruskin Street, Ottawa, Canada.
| | - Matias Zuñiga-Bustos
- Departamento de Bioinformática, Centro de Bioinformática, Simulación y Modelado (CBSM), Facultad de Ingeniería, Universidad de Talca, Campus Talca, 1 Poniente No. 1141, Casilla 721, Talca, Chile
| | - Roberto Rosales-Rojas
- Departamento de Bioinformática, Centro de Bioinformática, Simulación y Modelado (CBSM), Facultad de Ingeniería, Universidad de Talca, Campus Talca, 1 Poniente No. 1141, Casilla 721, Talca, Chile.,Doctorado en ciencias Mención Modelado de Sistemas Químicos y Biológicos, Facultad de Ingeniería, Universidad de Talca, Campus Talca, 1 Poniente No. 1141, Casilla 721, Talca, Chile
| | - Pablo Barrias
- Departamento de Ciencias del Ambiente, Facultad de Química y Biología, Universidad de Santiago de Chile, Casilla 40 Correo 33, Santiago, Chile
| | - May Griffith
- Centre de Recherche Hôpital Maisonneuve-Rosemont, Montréal, QC, Canada.,Département d'ophtalmologie, Université de Montréal, Montréal, QC, Canada
| | - Horacio Poblete
- Departamento de Bioinformática, Centro de Bioinformática, Simulación y Modelado (CBSM), Facultad de Ingeniería, Universidad de Talca, Campus Talca, 1 Poniente No. 1141, Casilla 721, Talca, Chile.,Millennium Nucleus of Ion Channels-Associated Diseases (MiNICAD), Universidad de Talca, Talca, Chile
| | - Peter S Sherin
- Chemistry Department, Molecular Sciences Research Hub, Imperial College London, 82 Wood Lane, London W12 0BZ, UK
| | - Ismael López-Duarte
- Chemistry Department, Molecular Sciences Research Hub, Imperial College London, 82 Wood Lane, London W12 0BZ, UK
| | - Marina K Kuimova
- Chemistry Department, Molecular Sciences Research Hub, Imperial College London, 82 Wood Lane, London W12 0BZ, UK
| | - Emilio I Alarcon
- Division of Cardiac Surgery, University of Ottawa Heart Institute, 40 Ruskin Street, Ottawa, Canada. .,Department of Biochemistry, Microbiology, and Immunology, Faculty of Medicine, University of Ottawa, Ottawa, Canada
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23
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Syntheses and properties of new photo-responsive gemini surfactants containing azobenzene group. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2021.127149] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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24
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Confinement fluorescence effect (CFE): Lighting up life by enhancing the absorbed photon energy utilization efficiency of fluorophores. Coord Chem Rev 2021. [DOI: 10.1016/j.ccr.2021.213979] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
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25
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Porphyrin dimer as efficient optical thermometer: Experimental and computational evaluation of the barrier to torsional rotation. JOURNAL OF LUMINESCENCE 2021. [DOI: 10.1016/j.jlumin.2021.117986] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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26
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Briole A, Podgorski T, Abou B. Molecular rotors as intracellular probes of red blood cell stiffness. SOFT MATTER 2021; 17:4525-4537. [PMID: 33949619 DOI: 10.1039/d1sm00321f] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
The deformability of red blood cells is an essential parameter that controls the rheology of blood as well as its circulation in the body. Characterizing the rigidity of the cells and their heterogeneity in a blood sample is thus a key point in the understanding of occlusive phenomena, particularly in the case of erythrocytic diseases in which healthy cells coexist with pathological cells. However, measuring intracellular rheology in small biological compartments requires the development of specific techniques. We propose a technique based on molecular rotors - viscosity-sensitive fluorescent probes - to evaluate the above key point. DASPI molecular rotor has been identified with spectral fluorescence properties decoupled from those of hemoglobin, the main component of the cytosol. After validation of the rotor as a viscosity probe in model fluids, we showed by confocal microscopy that, in addition to binding to the membrane, the rotor penetrates spontaneously and uniformly into red blood cells. Experiments on red blood cells whose rigidity is varied with temperature, show that molecular rotors can detect variations in their overall rigidity. A simple model allowed us to separate the contribution of the cytosol from that of the membrane, allowing a qualitative determination of the variation of cytosol viscosity with temperature, consistent with independent measurements of the viscosity of hemoglobin solutions. Our experiments show that the rotor can be used to study the intracellular rheology of red blood cells at the cellular level, as well as the heterogeneity of this stiffness in a blood sample. This opens up new possibilities for biomedical applications, diagnosis and disease monitoring.
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Affiliation(s)
- Alice Briole
- Laboratoire Matière et Systèmes Complexes, UMR 7057 CNRS - Université de Paris, 75013 Paris, France.
| | - Thomas Podgorski
- Laboratoire Rhéologie et Procédés, UMR 5520 CNRS-UGA-G.INP - Domaine Universitaire, BP 53 38041 Grenoble Cedex 9, France.
| | - Bérengère Abou
- Laboratoire Matière et Systèmes Complexes, UMR 7057 CNRS - Université de Paris, 75013 Paris, France.
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27
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Hornum M, Kongsted J, Reinholdt P. Computational and photophysical characterization of a Laurdan malononitrile derivative. Phys Chem Chem Phys 2021; 23:9139-9146. [PMID: 33885105 DOI: 10.1039/d1cp00831e] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The malononitrile group is considered one of the strongest natural electron-withdrawing groups in a chemist's arsenal. However, surprisingly little is known about how this group functions in push-pull fluorophores. In a recent computational study, we reported that replacing the ketone group of the traditional push-pull dye Laurdan with a malononitrile group significantly improves the optical properties while retaining the membrane behavior of the parent molecule Laurdan. Motivated by these results, we report here the synthesis and photophysical characterization of the said compound, 6-(1-undecyl-2,2-dicyanovinyl)-N,N-dimethyl-2-naphthylamine (CN-Laurdan). To our surprise, this new CN-Laurdan probe is found to be much less bright than the parent Laurdan due to a large drop in the fluorescence quantum yield. Using computational methods, we determine that the origin of this low quantum yield is related to the existence of a non-radiative decay pathway related to a rotation of the malononitrile moiety, suggesting that the molecule could nonetheless function very well as a molecular rotor. We confirm experimentally that CN-Laurdan functions as a molecular rotor by measuring the quantum yield in methanol/glycerol mixtures of increasing viscosity. Specifically, we found a consistent increase in the quantum yield across the entire range of tested viscosities.
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Affiliation(s)
- Mick Hornum
- Department of Physics, Chemistry and Pharmacy, University of Southern Denmark, Campusvej 55, Odense M DK-5230, Denmark.
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28
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Cueto-Díaz EJ, Ebiloma GU, Alfayez IA, Ungogo MA, Lemgruber L, González-García MC, Giron MD, Salto R, Fueyo-González FJ, Shiba T, González-Vera JA, Ruedas Rama MJ, Orte A, de Koning HP, Dardonville C. Synthesis, biological, and photophysical studies of molecular rotor-based fluorescent inhibitors of the trypanosome alternative oxidase. Eur J Med Chem 2021; 220:113470. [PMID: 33940464 DOI: 10.1016/j.ejmech.2021.113470] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2021] [Revised: 03/26/2021] [Accepted: 04/10/2021] [Indexed: 11/28/2022]
Abstract
We have recently reported on the development and trypanocidal activity of a class of inhibitors of Trypanosome Alternative Oxidase (TAO) that are targeted to the mitochondrial matrix by coupling to lipophilic cations via C14 linkers to enable optimal interaction with the enzyme's active site. This strategy resulted in a much-enhanced anti-parasite effect, which we ascribed to the greater accumulation of the compound at the location of the target protein, i.e. the mitochondrion, but to date this localization has not been formally established. We therefore synthesized a series of fluorescent analogues to visualize accumulation and distribution within the cell. The fluorophore chosen, julolidine, has the remarkable extra feature of being able to function as a viscosity sensor and might thus additionally act as a probe of the cellular glycerol that is expected to be produced when TAO is inhibited. Two series of fluorescent inhibitor conjugates incorporating a cationic julolidine-based viscosity sensor were synthesized and their photophysical and biological properties were studied. These probes display a red emission, with a high signal-to-noise ratio (SNR), using both single- and two-photon excitation. Upon incubation with T. brucei and mammalian cells, the fluorescent inhibitors 1a and 2a were taken up selectively in the mitochondria as shown by live-cell imaging. Efficient partition of 1a in functional isolated (rat liver) mitochondria was estimated to 66 ± 20% of the total. The compounds inhibited recombinant TAO enzyme in the submicromolar (1a, 2c, 2d) to low nanomolar range (2a) and were effective against WT and multidrug-resistant trypanosome strains (B48, AQP1-3 KO) in the submicromolar range. Good selectivity (SI > 29) over mammalian HEK cells was observed. However, no viscosity-related shift could be detected, presumably because the glycerol was produced cytosolically, and released through aquaglyceroporins, whereas the probe was located, virtually exclusively, in the trypanosome's mitochondrion.
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Affiliation(s)
- Eduardo J Cueto-Díaz
- Instituto de Química Médica, IQM-CSIC, Juan de la Cierva 3, E-28006, Madrid, Spain
| | - Godwin U Ebiloma
- Graduate School of Science and Technology, Department of Applied Biology, Kyoto Institute of Technology, Kyoto, 606-8585, Japan; Institute of Infection, Immunity and Inflammation, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, United Kingdom; School of Health and Life Sciences, Teesside University, Middlesbrough, United Kingdom
| | - Ibrahim A Alfayez
- Institute of Infection, Immunity and Inflammation, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, United Kingdom
| | - Marzuq A Ungogo
- Institute of Infection, Immunity and Inflammation, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, United Kingdom; Department of Veterinary Pharmacology and Toxicology, Faculty of Veterinary Medicine, Ahmadu Bello University, Zaria, Nigeria
| | - Leandro Lemgruber
- Institute of Infection, Immunity and Inflammation, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, United Kingdom
| | - M Carmen González-García
- Departamento de Fisicoquimica, Facultad de Farmacia, Universidad de Granada, C. U. Cartuja, E-18071, Granada, Spain
| | - Maria D Giron
- Departamento de Bioquimica y Biologia Molecular II. Facultad de Farmacia, Universidad de Granada, C. U. Cartuja, E-18071, Granada, Spain
| | - Rafael Salto
- Departamento de Bioquimica y Biologia Molecular II. Facultad de Farmacia, Universidad de Granada, C. U. Cartuja, E-18071, Granada, Spain
| | | | - Tomoo Shiba
- Graduate School of Science and Technology, Department of Applied Biology, Kyoto Institute of Technology, Kyoto, 606-8585, Japan
| | - Juan A González-Vera
- Departamento de Fisicoquimica, Facultad de Farmacia, Universidad de Granada, C. U. Cartuja, E-18071, Granada, Spain
| | - Maria José Ruedas Rama
- Departamento de Fisicoquimica, Facultad de Farmacia, Universidad de Granada, C. U. Cartuja, E-18071, Granada, Spain
| | - Angel Orte
- Departamento de Fisicoquimica, Facultad de Farmacia, Universidad de Granada, C. U. Cartuja, E-18071, Granada, Spain
| | - Harry P de Koning
- Institute of Infection, Immunity and Inflammation, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, United Kingdom
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29
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Rajagopal MC, Sinha S. Cellular Thermometry Considerations for Probing Biochemical Pathways. Cell Biochem Biophys 2021; 79:359-373. [PMID: 33797706 DOI: 10.1007/s12013-021-00979-w] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/16/2021] [Indexed: 12/28/2022]
Abstract
Temperature is a fundamental thermodynamic property that can serve as a probe of biochemical reactions. Extracellular thermometry has previously been used to probe cancer metabolism and thermoregulation, with measured temperature changes of ~1-2 K in tissues, consistent with theoretical predictions. In contrast, previous intracellular thermometry studies remain disputed due to reports of >1 K intracellular temperature rises over 5 min or more that are inconsistent with theory. Thus, the origins of such anomalous temperature rises remain unclear. An improved quantitative understanding of intracellular thermometry is necessary to provide a clearer perspective for future measurements. Here, we develop a generalizable framework for modeling cellular heat diffusion over a range of subcellular-to-tissue length scales. Our model shows that local intracellular temperature changes reach measurable limits (>0.1 K) only when exogenously stimulated. On the other hand, extracellular temperatures can be measurable (>0.1 K) in tissues even from endogenous biochemical pathways. Using these insights, we provide a comprehensive approach to choosing an appropriate cellular thermometry technique by analyzing thermogenic reactions of different heat rates and time constants across length scales ranging from subcellular to tissues. Our work provides clarity on cellular heat diffusion modeling and on the required thermometry approach for probing thermogenic biochemical pathways.
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Affiliation(s)
- Manjunath C Rajagopal
- Department of Mechanical Science and Engineering, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA
| | - Sanjiv Sinha
- Department of Mechanical Science and Engineering, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA.
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30
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Ma C, Sun W, Xu L, Qian Y, Dai J, Zhong G, Hou Y, Liu J, Shen B. A minireview of viscosity-sensitive fluorescent probes: design and biological applications. J Mater Chem B 2021; 8:9642-9651. [PMID: 32986068 DOI: 10.1039/d0tb01146k] [Citation(s) in RCA: 93] [Impact Index Per Article: 31.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Microenvironment-related parameters like viscosity, polarity, and pH play important roles in controlling the physical or chemical behaviors of local molecules, which determine the physical or chemical behaviors of surrounding molecules. In general, changes of the internal microenvironment will usually lead to cellular malfunction or the occurrence of relevant diseases. In the last few decades, the field of chemicobiology has received great attention. Also, remarkable progress has been made in developing viscosity-sensitive fluorescent probes. These probes were particularly efficient for imaging viscosity in biomembranes as well as lighting up specific organelles, such as mitochondria and lysosome. Besides, there are some fluorescent probes that can be used to quantify intracellular viscosity when combined with fluorescence lifetime (FLIM) and ratiometric imaging under water-free conditions. In this review, we summarized the majority of viscosity-sensitive chemosensors that have been reported thus far.
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Affiliation(s)
- Chenggong Ma
- School of Food Science and Pharmaceutical Engineering, Nanjing Normal University, Nanjing, Jiangsu 210023, China.
| | - Wen Sun
- School of Food Science and Pharmaceutical Engineering, Nanjing Normal University, Nanjing, Jiangsu 210023, China.
| | - Limin Xu
- School of Food Science and Pharmaceutical Engineering, Nanjing Normal University, Nanjing, Jiangsu 210023, China.
| | - Ying Qian
- School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, China
| | - Jianan Dai
- School of Food Science and Pharmaceutical Engineering, Nanjing Normal University, Nanjing, Jiangsu 210023, China.
| | - Guoyan Zhong
- School of Food Science and Pharmaceutical Engineering, Nanjing Normal University, Nanjing, Jiangsu 210023, China.
| | - Yadan Hou
- School of Food Science and Pharmaceutical Engineering, Nanjing Normal University, Nanjing, Jiangsu 210023, China.
| | - Jialong Liu
- School of Food Science and Pharmaceutical Engineering, Nanjing Normal University, Nanjing, Jiangsu 210023, China.
| | - Baoxing Shen
- School of Food Science and Pharmaceutical Engineering, Nanjing Normal University, Nanjing, Jiangsu 210023, China.
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31
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Facile Use of Silver Nanoparticles-Loaded Alumina/Silica in Nanofluid Formulations for Enhanced Catalytic Performance toward 4-Nitrophenol Reduction. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2021; 18:ijerph18062994. [PMID: 33803950 PMCID: PMC7999000 DOI: 10.3390/ijerph18062994] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/09/2021] [Revised: 03/01/2021] [Accepted: 03/05/2021] [Indexed: 11/27/2022]
Abstract
The introduction of toxic chemicals into the environment can result in water pollution leading to the degradation of biodiversity as well as human health. This study presents a new approach of using metal oxides (Al2O3 and SiO2) modified with a plasmonic metal (silver, Ag) nanoparticles (NPs)-based nanofluid (NF) formulation for environmental remediation purposes. Firstly, we prepared the Al2O3 and SiO2 NFs of different concentrations (0.2 to 2.0 weight %) by ultrasonic-assisted dispersion of Al2O3 and SiO2 NPs with water as the base fluid. The thermo-physical (viscosity, activation energy, and thermal conductivity), electrical (AC conductivity and dielectric constant) and physical (ultrasonic velocity, density, refractive index) and stability characteristics were comparatively evaluated. The Al2O3 and SiO2 NPs were then catalytically activated by loading silver NPs to obtain Al2O3/SiO2@Ag composite NPs. The catalytic reduction of 4-nitrophenol (4-NP) with Al2O3/SiO2@Ag based NFs was followed. The catalytic efficiency of Al2O3@Ag NF and SiO2@Ag NF, for the 4-NP catalysis, is compared. Based on the catalytic rate constant evaluation, the catalytic reduction efficiency for 4-NP is found to be superior for 2% weight Al2O3@Ag NF (92.9 × 10−3 s−1) as compared to the SiO2@Ag NF (29.3 × 10−3 s−1). Importantly, the enhanced catalytic efficiency of 2% weight Al2O3@Ag NF for 4-NP removal is much higher than other metal NPs based catalysts reported in the literature, signifying the importance of NF formulation-based catalysis.
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32
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Cai L, Li H, Yu X, Wu L, Wei X, James TD, Huang C. Green Fluorescent Protein GFP-Chromophore-Based Probe for the Detection of Mitochondrial Viscosity in Living Cells. ACS APPLIED BIO MATERIALS 2021; 4:2128-2134. [PMID: 35014341 DOI: 10.1021/acsabm.0c01446] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Viscosity is a pivotal factor for indicating the dysfunction of the mitochondria. To date, most of the fluorescent probes developed for mitochondrial viscosity have been designed using BODIPY, hemicyanine, or pyridine-based molecular rotors as part of the core structure. Our aim with this research was to extend the range of suitable fluorophores available for the construction of such fluorescent molecular rotors for evaluating the viscosity of mitocondria. Herein, we have developed a green fluorescent protein (GFP)-chromophore-based fluorescent probe (MIT-V) for the detection of mitochondrial viscosity in live cells. MIT-V exhibited a high sensitivity toward viscosity (from 7.9 cP to 438.4 cP). The "off-on" sensing mechanism of MIT-V was ascribed to the restricted rotation of single bonds and excited-state C═C double bonds of MIT-V. Cell studies indicated that MIT-V targets the mitochondria and that it was able to monitor real-time changes in the viscosity of live HeLa cell mitochondria. Therefore, we propose that MIT-V can be used as an effective chemosensor for the real-time imaging of mitochondrial viscosity in live cells. Our results clearly demonstrate the utility of such GFP-chromophore-based derivatives for the development of viscosity-sensitive systems.
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Affiliation(s)
- Lei Cai
- The Education Ministry Key Laboratory of Resource Chemistry, Shanghai Key Laboratory of Rare Earth Functional Materials, and Shanghai Municipal Education Committee Key Laboratory of Molecular Imaging Probes and Sensors, Department of Chemistry, Shanghai Normal University, 100 Guilin Road, Shanghai 200234, China
| | - Huan Li
- The Education Ministry Key Laboratory of Resource Chemistry, Shanghai Key Laboratory of Rare Earth Functional Materials, and Shanghai Municipal Education Committee Key Laboratory of Molecular Imaging Probes and Sensors, Department of Chemistry, Shanghai Normal University, 100 Guilin Road, Shanghai 200234, China
| | - Xiang Yu
- The Education Ministry Key Laboratory of Resource Chemistry, Shanghai Key Laboratory of Rare Earth Functional Materials, and Shanghai Municipal Education Committee Key Laboratory of Molecular Imaging Probes and Sensors, Department of Chemistry, Shanghai Normal University, 100 Guilin Road, Shanghai 200234, China
| | - Luling Wu
- Department of Chemistry, University of Bath, Bath BA2 7AY, United Kingdom
| | - Xiaoqin Wei
- The Education Ministry Key Laboratory of Resource Chemistry, Shanghai Key Laboratory of Rare Earth Functional Materials, and Shanghai Municipal Education Committee Key Laboratory of Molecular Imaging Probes and Sensors, Department of Chemistry, Shanghai Normal University, 100 Guilin Road, Shanghai 200234, China
| | - Tony D James
- Department of Chemistry, University of Bath, Bath BA2 7AY, United Kingdom.,School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang 453007, P. R. China
| | - Chusen Huang
- The Education Ministry Key Laboratory of Resource Chemistry, Shanghai Key Laboratory of Rare Earth Functional Materials, and Shanghai Municipal Education Committee Key Laboratory of Molecular Imaging Probes and Sensors, Department of Chemistry, Shanghai Normal University, 100 Guilin Road, Shanghai 200234, China
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33
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Shimolina LE, Gulin AA, Paez-Perez M, López-Duarte I, Druzhkova IN, Lukina MM, Gubina MV, Brooks NJ, Zagaynova EV, Kuimova MK, Shirmanova MV. Mapping cisplatin-induced viscosity alterations in cancer cells using molecular rotor and fluorescence lifetime imaging microscopy. JOURNAL OF BIOMEDICAL OPTICS 2020; 25:JBO-200248R. [PMID: 33331150 PMCID: PMC7744042 DOI: 10.1117/1.jbo.25.12.126004] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/02/2020] [Accepted: 11/16/2020] [Indexed: 06/12/2023]
Abstract
SIGNIFICANCE Despite the importance of the cell membrane in regulation of drug activity, the influence of drug treatments on its physical properties is still poorly understood. The combination of fluorescence lifetime imaging microscopy (FLIM) with specific viscosity-sensitive fluorescent molecular rotors allows the quantification of membrane viscosity with high spatiotemporal resolution, down to the individual cell organelles. AIM The aim of our work was to analyze microviscosity of the plasma membrane of living cancer cells during chemotherapy with cisplatin using FLIM and correlate the observed changes with lipid composition and cell's response to treatment. APPROACH FLIM together with viscosity-sensitive boron dipyrromethene-based fluorescent molecular rotor was used to map the fluidity of the cell's membrane. Chemical analysis of membrane lipid composition was performed with time-of-flight secondary ion mass spectrometry (ToF-SIMS). RESULTS We detected a significant steady increase in membrane viscosity in viable cancer cells, both in cell monolayers and tumor spheroids, upon prolonged treatment with cisplatin, as well as in cisplatin-adapted cell line. ToF-SIMS revealed correlative changes in lipid profile of cisplatin-treated cells. CONCLUSIONS These results suggest an involvement of membrane viscosity in the cell adaptation to the drug and in the acquisition of drug resistance.
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Affiliation(s)
- Liubov E. Shimolina
- Privolzhsky Research Medical University, Institute of Experimental Oncology and Biomedical Technologies, Nizhny Novgorod, Russia
- Lobachevsky State University of Nizhny Novgorod, Nizhny Novgorod, Russia
| | - Alexander A. Gulin
- N.N. Semenov Federal Research Center for Chemical Physics Russian Academy of Sciences, Moscow, Russia
- Lomonosov Moscow State University, Department of Chemistry, Moscow, Russia
| | - Miguel Paez-Perez
- Imperial College London, Faculty of Natural Sciences, Department of Chemistry, London, United Kingdom
| | - Ismael López-Duarte
- Imperial College London, Faculty of Natural Sciences, Department of Chemistry, London, United Kingdom
| | - Irina N. Druzhkova
- Privolzhsky Research Medical University, Institute of Experimental Oncology and Biomedical Technologies, Nizhny Novgorod, Russia
| | - Maria M. Lukina
- Privolzhsky Research Medical University, Institute of Experimental Oncology and Biomedical Technologies, Nizhny Novgorod, Russia
| | - Margarita V. Gubina
- N.N. Semenov Federal Research Center for Chemical Physics Russian Academy of Sciences, Moscow, Russia
- Moscow Institute of Physics and Technology, Dolgoprudny, Russia
| | - Nicolas J. Brooks
- Imperial College London, Faculty of Natural Sciences, Department of Chemistry, London, United Kingdom
| | - Elena V. Zagaynova
- Privolzhsky Research Medical University, Institute of Experimental Oncology and Biomedical Technologies, Nizhny Novgorod, Russia
- Lobachevsky State University of Nizhny Novgorod, Nizhny Novgorod, Russia
| | - Marina K. Kuimova
- Imperial College London, Faculty of Natural Sciences, Department of Chemistry, London, United Kingdom
| | - Marina V. Shirmanova
- Privolzhsky Research Medical University, Institute of Experimental Oncology and Biomedical Technologies, Nizhny Novgorod, Russia
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34
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Ye S, Zhang H, Fei J, Wolstenholme CH, Zhang X. A General Strategy to Control Viscosity Sensitivity of Molecular Rotor-Based Fluorophores. Angew Chem Int Ed Engl 2020; 60:1339-1346. [PMID: 32991766 DOI: 10.1002/anie.202011108] [Citation(s) in RCA: 91] [Impact Index Per Article: 22.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2020] [Indexed: 12/13/2022]
Abstract
Molecular rotor-based fluorophores (RBFs) have been widely used in many fields. However, the lack of control of their viscosity sensitivity limits their application. Herein, this problem is resolved by chemically installing extended π-rich alternating carbon-carbon linkages between the rotational electron donors and acceptors of RBFs. The data reveal that the length of the linkage strongly influences the viscosity sensitivity, likely resulting from varying height of the energy barriers between the fluorescent planar and the dark twisted configurations. Three RBF derivatives that span a wide range of viscosity sensitivities were designed. These RBFs demonstrated, through a dual-color imaging strategy, that they can differentiate misfolded protein oligomers and insoluble aggregates, both in test tubes and live cells. Beyond RBFs, it is envisioned that this chemical mechanism might be generally applicable to a wide range of photoisomerizable and aggregation-induced emission fluorophores.
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Affiliation(s)
- Songtao Ye
- Department of Chemistry, Pennsylvania State University, University Park, PA, 16802, USA
| | - Han Zhang
- Department of Chemistry, Pennsylvania State University, University Park, PA, 16802, USA
| | - Jinyu Fei
- Department of Chemistry, Pennsylvania State University, University Park, PA, 16802, USA
| | | | - Xin Zhang
- Department of Chemistry, Pennsylvania State University, University Park, PA, 16802, USA.,Department of Biochemistry and Molecular Biology, Pennsylvania State University, University Park, PA, 16802, USA
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35
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Ye S, Zhang H, Fei J, Wolstenholme CH, Zhang X. A General Strategy to Control Viscosity Sensitivity of Molecular Rotor‐Based Fluorophores. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202011108] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Songtao Ye
- Department of Chemistry Pennsylvania State University University Park PA 16802 USA
| | - Han Zhang
- Department of Chemistry Pennsylvania State University University Park PA 16802 USA
| | - Jinyu Fei
- Department of Chemistry Pennsylvania State University University Park PA 16802 USA
| | | | - Xin Zhang
- Department of Chemistry Pennsylvania State University University Park PA 16802 USA
- Department of Biochemistry and Molecular Biology Pennsylvania State University University Park PA 16802 USA
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36
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Liu X, Chi W, Gómez‐Infante ADJ, Peña‐Cabrera E, Liu X, Chang Y. A Systematic Study on the Relationship Between Viscosity Sensitivity and
Temperature Dependency
of
BODIPY
Rotors. B KOREAN CHEM SOC 2020. [DOI: 10.1002/bkcs.12110] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Xiao Liu
- Department of Chemistry Pohang University of Science and Technology Pohang 37673 Republic of Korea
- Center for Self‐assembly and Complexity Institute for Basic Science (IBS) Pohang 37673 Republic of Korea
| | - Weijie Chi
- Fluorescence Research Group Singapore University of Technology and Design Singapore 487372 Singapore
| | | | - Eduardo Peña‐Cabrera
- Departamento de Quimica DCNE Campus Guanajuato, Universidad de Guanajuato Guanajuato 36050 Mexico
| | - Xiaogang Liu
- Fluorescence Research Group Singapore University of Technology and Design Singapore 487372 Singapore
| | - Young‐Tae Chang
- Department of Chemistry Pohang University of Science and Technology Pohang 37673 Republic of Korea
- Center for Self‐assembly and Complexity Institute for Basic Science (IBS) Pohang 37673 Republic of Korea
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37
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Vyšniauskas A, Kuimova MK. Microviscosity and temperature sensors: The twists and turns of the photophysics of conjugated porphyrin dimers — a SPP/JPP Young Investigator Award paper. J PORPHYR PHTHALOCYA 2020. [DOI: 10.1142/s1088424620300050] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Conjugated porphyrin dimers have captured the imagination of scientists due to a set of unique spectroscopic features such as remarkable nonlinear-optical properties, high yields of singlet oxygen sensitization and the absorption and emission in the far-red region of the visible spectrum. Here we review a range of newly emerged applications of porphyrin dimers as sensors of their microenvironment such as viscosity and temperature. We discuss the sensing mechanism based on the known conformational flexibility of the dimer structure and describe possible applications of these unique sensors, from detecting viscosity increase during photoinduced cell death to structural responses of polymers and artificial lipid membranes, to temperature changes, and to mechanical deformation.
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Affiliation(s)
- Aurimas Vyšniauskas
- Center of Physical Sciences and Technology, Sauletekio av. 3, Vilnius, LT-10257, Lithuania
- Chemistry Department, Vilnius University, Naugarduko st. 24, Vilnius, LT-03225, Lithuania
| | - Marina K. Kuimova
- Chemistry Department, Imperial College London, Molecular Sciences Research Hub, White City Campus, Wood Lane, W12 0BZ, UK
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38
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Engineering a double-rotor-based fluorescent molecule to sensitively track mitochondrial viscosity in living cells and zebrafish with high signal-to-background ratio (S/B). J Photochem Photobiol A Chem 2020. [DOI: 10.1016/j.jphotochem.2020.112789] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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39
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Clark R, Nawawi MA, Dobre A, Pugh D, Liu Q, Ivanov AP, White AJP, Edel JB, Kuimova MK, McIntosh AJS, Welton T. The effect of structural heterogeneity upon the microviscosity of ionic liquids. Chem Sci 2020; 11:6121-6133. [PMID: 32874514 PMCID: PMC7448533 DOI: 10.1039/d0sc02009e] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2020] [Accepted: 05/26/2020] [Indexed: 01/25/2023] Open
Abstract
The behaviour of two molecular rotors, one charged - 3,3'-diethylthiacarbocyanine iodide (Cy3) and one neutral - 8-[4-decyloxyphenyl]-4,4-difluoro-4-bora-3a,4a-diaza-s-indacene (BODIPY-C10), have been studied in various ionic liquids. The fluorescent decay lifetime has been used to elucidate the structure of the immediate region around the rotor. The neutral BODIPY-C10 was found to prefer the non-polar alkyl chain environment, leading to two trends in the lifetime of the dye: one when it was fully partitioned into the non-polar domain, and one when it also sampled polar moieties. The positively charged Cy3 dye showed a complex relationship between the bulk viscosity of the ionic liquid and lifetime of the molecular rotor. This was attributed to a combination of polarity related spectral changes, changes in anion cages around the dye, and temperature dependent fluorescent lifetimes alongside the dependence of the rotor upon the viscosity.
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Affiliation(s)
- Ryan Clark
- Department of Chemistry , Molecular Science Research Hub , Imperial College London , 80 Wood Lane , London , W12 0BZ , UK .
| | - Mohd A Nawawi
- Department of Chemistry , Molecular Science Research Hub , Imperial College London , 80 Wood Lane , London , W12 0BZ , UK .
| | - Ana Dobre
- Department of Chemistry , Molecular Science Research Hub , Imperial College London , 80 Wood Lane , London , W12 0BZ , UK .
| | - David Pugh
- Department of Chemistry , Molecular Science Research Hub , Imperial College London , 80 Wood Lane , London , W12 0BZ , UK .
- Department of Chemistry , Kings College London , Britannia House, 7 Trinity Street , London , SE1 1DB , UK
| | - Qingshan Liu
- Department of Chemistry , Molecular Science Research Hub , Imperial College London , 80 Wood Lane , London , W12 0BZ , UK .
- School of Science , Shenyang Agricultural University , Shenyang 110866 , P. R. China
| | - Aleksandar P Ivanov
- Department of Chemistry , Molecular Science Research Hub , Imperial College London , 80 Wood Lane , London , W12 0BZ , UK .
| | - Andrew J P White
- Department of Chemistry , Molecular Science Research Hub , Imperial College London , 80 Wood Lane , London , W12 0BZ , UK .
| | - Joshua B Edel
- Department of Chemistry , Molecular Science Research Hub , Imperial College London , 80 Wood Lane , London , W12 0BZ , UK .
| | - Marina K Kuimova
- Department of Chemistry , Molecular Science Research Hub , Imperial College London , 80 Wood Lane , London , W12 0BZ , UK .
| | - Alastair J S McIntosh
- Department of Chemistry , Molecular Science Research Hub , Imperial College London , 80 Wood Lane , London , W12 0BZ , UK .
| | - Tom Welton
- Department of Chemistry , Molecular Science Research Hub , Imperial College London , 80 Wood Lane , London , W12 0BZ , UK .
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40
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Ogle MM, Smith McWilliams AD, Jiang B, Martí AA. Latest Trends in Temperature Sensing by Molecular Probes. CHEMPHOTOCHEM 2020. [DOI: 10.1002/cptc.201900255] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Meredith M. Ogle
- Department of ChemistryRice University 6100 Main St MS60 Houston TX 77005 USA
| | | | - Bo Jiang
- Department of ChemistryRice University 6100 Main St MS60 Houston TX 77005 USA
| | - Angel A. Martí
- Department of ChemistryRice University 6100 Main St MS60 Houston TX 77005 USA
- Department of Bioengineering, and Department of Materials Science & NanoengineeringRice University 6100 Main Houston TX 77005 USA
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41
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Xu L, Ni L, Zeng F, Wu S. Tetranitrile-anthracene as a probe for fluorescence detection of viscosity in fluid drinks via aggregation-induced emission. Analyst 2020; 145:844-850. [DOI: 10.1039/c9an02157d] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
An AIE-based fluorescent probe was developed for monitoring the viscosity change during the spoilage process of fluid drinks.
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Affiliation(s)
- Lingfeng Xu
- State Key Laboratory of Luminescent Materials & Devices
- Guangdong Provincial Key Laboratory of Luminescence from Molecular Aggregates
- College of Materials Science & Engineering
- South China University of Technology
- Guangzhou 510640
| | - Ling Ni
- State Key Laboratory of Luminescent Materials & Devices
- Guangdong Provincial Key Laboratory of Luminescence from Molecular Aggregates
- College of Materials Science & Engineering
- South China University of Technology
- Guangzhou 510640
| | - Fang Zeng
- State Key Laboratory of Luminescent Materials & Devices
- Guangdong Provincial Key Laboratory of Luminescence from Molecular Aggregates
- College of Materials Science & Engineering
- South China University of Technology
- Guangzhou 510640
| | - Shuizhu Wu
- State Key Laboratory of Luminescent Materials & Devices
- Guangdong Provincial Key Laboratory of Luminescence from Molecular Aggregates
- College of Materials Science & Engineering
- South China University of Technology
- Guangzhou 510640
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42
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Chen Y, Chen DG, Chen YA, Wu CH, Chang KH, Meng FY, Chen MC, Lin JA, Huang CY, Su J, Tian H, Chou PT. Mono-Heteroatom Substitution for Harnessing Excited-State Structural Planarization of Dihydrodibenzo[a,c]phenazines. Chemistry 2019; 25:16755-16764. [PMID: 31663166 DOI: 10.1002/chem.201904900] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2019] [Indexed: 01/24/2023]
Abstract
With the aim of generalizing the structure-properties relationship of bending heterocyclic molecules that undergo prominent photoinduced structural planarization (PISP), a series of new dihydrodibenzo[ac]phenazine derivatives in which one nitrogen atom is replaced by oxygen (PNO), sulfur (PNS), selenium (PNSe), or dimethylmethanediyl (PNC) was strategically designed and synthesized. Compounds PNO, PNS, and PNSe have significantly nonplanar geometries in the ground state, which undergo PISP to give a planarlike conformer and hence a large emission Stokes shift. A combination of femtosecond early relaxation dynamics and computational approaches established an R*→I* (intermediate)→P* sequential kinetic pattern for PNS and PNSe, whereas PNO undergoes R*→P* one-step kinetics. The polarization ability of the substituted heteroatoms, which is in the order O<S<Se, correlates with their increase in π conjugation, and hence the Stokes shift of the emission is in the order PNO<PNS<PNSe. Compound PNSe with the largest PISP barrier was shown to be a highly sensitive viscosity probe. Further evidence for heteroatom-harnessing PISP is given by PNC, in which the dimethylmethanediyl substituent lacks lone pair electrons for π extension, showing the normal emission of the bent structure. The results led to the conclusion that PISP is ubiquitous in dihydrodibenzo[ac]phenazines, for which the driving force is elongation of the π delocalization to gain stabilization in the excited state.
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Affiliation(s)
- Yi Chen
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals, East China University of Science & Technology Shanghai, 200237, Shanghai, P. R. China.,Department of Chemistry, National Taiwan University, Taipei, 10617, R.O.C., Taiwan
| | - Deng-Gao Chen
- Department of Chemistry, National Taiwan University, Taipei, 10617, R.O.C., Taiwan
| | - Yi-An Chen
- Department of Chemistry, National Taiwan University, Taipei, 10617, R.O.C., Taiwan
| | - Cheng-Ham Wu
- Department of Chemistry, National Taiwan University, Taipei, 10617, R.O.C., Taiwan
| | - Kai-Hsin Chang
- Department of Chemistry, National Taiwan University, Taipei, 10617, R.O.C., Taiwan
| | - Fan-Yi Meng
- Department of Chemistry, National Taiwan University, Taipei, 10617, R.O.C., Taiwan
| | - Meng-Chi Chen
- Department of Chemistry, National Taiwan University, Taipei, 10617, R.O.C., Taiwan
| | - Jia-An Lin
- Department of Chemistry, National Taiwan University, Taipei, 10617, R.O.C., Taiwan
| | - Chun-Ying Huang
- Department of Chemistry, National Taiwan University, Taipei, 10617, R.O.C., Taiwan
| | - Jianhua Su
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals, East China University of Science & Technology Shanghai, 200237, Shanghai, P. R. China
| | - He Tian
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals, East China University of Science & Technology Shanghai, 200237, Shanghai, P. R. China
| | - Pi-Tai Chou
- Department of Chemistry, National Taiwan University, Taipei, 10617, R.O.C., Taiwan
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43
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Aswathy PR, Sharma S, Tripathi NP, Sengupta S. Regioisomeric BODIPY Benzodithiophene Dyads and Triads with Tunable Red Emission as Ratiometric Temperature and Viscosity Sensors. Chemistry 2019; 25:14870-14880. [DOI: 10.1002/chem.201902952] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2019] [Revised: 08/17/2019] [Indexed: 02/06/2023]
Affiliation(s)
- P. R. Aswathy
- Department of Chemical SciencesIndian Institute of Science, Education and Research (IISER) Mohali Punjab 140306 India
| | - Sushil Sharma
- Department of Chemical SciencesIndian Institute of Science, Education and Research (IISER) Mohali Punjab 140306 India
| | - Narendra Pratap Tripathi
- Department of Chemical SciencesIndian Institute of Science, Education and Research (IISER) Mohali Punjab 140306 India
| | - Sanchita Sengupta
- Department of Chemical SciencesIndian Institute of Science, Education and Research (IISER) Mohali Punjab 140306 India
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44
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Kubánková M, Chambers JE, Huber RG, Bond PJ, Marciniak SJ, Kuimova MK. Linker length affects photostability of protein-targeted sensor of cellular microviscosity. Methods Appl Fluoresc 2019; 7:044004. [DOI: 10.1088/2050-6120/ab481f] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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45
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Ogle MM, Smith McWilliams AD, Ware MJ, Curley SA, Corr SJ, Martí AA. Sensing Temperature in Vitro and in Cells Using a BODIPY Molecular Probe. J Phys Chem B 2019; 123:7282-7289. [DOI: 10.1021/acs.jpcb.9b04384] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
| | | | - Matthew J. Ware
- Department of Surgery, Baylor College of Medicine, Houston, Texas 77030, United States
| | - Steven A. Curley
- Department of Surgery, Baylor College of Medicine, Houston, Texas 77030, United States
- Department of Surgery, CHRISTUS Trinity Mother Frances, 800 E. Dawson, Tyler, Texas 75701, United States
| | - Stuart J. Corr
- Department of Surgery, Baylor College of Medicine, Houston, Texas 77030, United States
- Department of Biomedical Engineering, University of Houston, Houston, Texas 77204, United States
- School of Medicine, Swansea University, Swansea, Wales SA2 8PP, U.K
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46
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Lei Z, Xin K, Qiu S, Hou L, Meng X, Yang Y. A Threshold-Limited Fluorescence Probe for Viscosity. Front Chem 2019; 7:342. [PMID: 31139624 PMCID: PMC6527809 DOI: 10.3389/fchem.2019.00342] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2019] [Accepted: 04/25/2019] [Indexed: 12/16/2022] Open
Abstract
Viscosity of body fluid is an established biomarker of pathological conditions. Abnormality of cellular viscosity occurs when cells are challenged with external stresses. Small molecule probes to assess the viscosity are sought after for both disease diagnostics and basic studies. Fluorescence based probes are particular attractive due to their potentials for convenient and high spatiotemporal resolution microscopic monitoring of biological samples. The dyes with a floppy push-pull backbone or dyes with a rotatable substituent exhibits a viscosity responsive fluorescence enhancement and therefore viable viscosity probes. The scaffold of the existing viscosity probes contains typically one such floppy site. Therefore, they typically linearly respond to log(viscosity). We argue that minor viscosity fluctuation could potentially be physiological as the biological system is dynamic. We wish to develop a type of conceptually-new, threshold-limited viscosity probes, to complement the existing probes. Such probes do not exhibit a fluorescence enhancement when challenged with minor and presumably physiological enhancement of viscosity. When the viscosity is higher than a certain threshold, their fluorescence turns on. We hypothesize that a dye with two far-apart floppy sites could potentially yield such a threshold-limited signal and designed VPZ2 and VPZ3. Through spectral titration, VPZ3 was found to yield the desired threshold-limited signal. VPZ3 was suitable for in vitro bioimaging of viscosity under one-photon or two-photon excitation. VPZ3 is potentially useful in many downstream applications. Future work includes fine-tune of the threshold to allow tailored limit for fluorescence turn-on to better meet the need of different applications. Besides the implications in the real-world applications, the design concept could also be translated to design of alternative substrates.
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Affiliation(s)
- Zuhai Lei
- State Key Laboratory of Bioreactor Engineering, Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai, China
- Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, State Key Laboratory of Molecular Engineering of Polymers and iChem, Department of Chemistry, Fudan University, Shanghai, China
| | - Kai Xin
- State Key Laboratory of Bioreactor Engineering, Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai, China
| | - Shaobing Qiu
- State Key Laboratory of Bioreactor Engineering, Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai, China
| | - Liling Hou
- Department of Chemistry, Anhui University, Hefei, China
| | | | - Youjun Yang
- State Key Laboratory of Bioreactor Engineering, Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai, China
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47
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Cui J, Yao Y, Chen C, Huang R, Zhang W, Qian J. Mitochondria-targeted ratiometric fluorescent probes for micropolarity and microviscosity and their applications. CHINESE CHEM LETT 2019. [DOI: 10.1016/j.cclet.2018.12.031] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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48
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Mamardashvili GM, Maltceva OV, Lazovskiy DA, Khodov IA, Borovkov V, Mamardashvili NZ, Koifman OI. Medium viscosity effect on fluorescent properties of Sn(IV)-tetra(4-sulfonatophenyl)porphyrin complexes in buffer solutions. J Mol Liq 2019. [DOI: 10.1016/j.molliq.2018.12.118] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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49
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Mamardashvili GM, Maltceva OV, Lazovskiy DA, Khodov IA, Borovkov V, Mamardashvili NZ, Koifman OI. Medium viscosity effect on fluorescent properties of Sn(IV)-tetra(4-sulfonatophenyl)porphyrin complexes in buffer solutions. J Mol Liq 2019. [DOI: https://doi.org/10.1016/j.molliq.2018.12.118] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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50
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Steinmark IE, James AL, Chung PH, Morton PE, Parsons M, Dreiss CA, Lorenz CD, Yahioglu G, Suhling K. Targeted fluorescence lifetime probes reveal responsive organelle viscosity and membrane fluidity. PLoS One 2019; 14:e0211165. [PMID: 30763333 PMCID: PMC6375549 DOI: 10.1371/journal.pone.0211165] [Citation(s) in RCA: 49] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2018] [Accepted: 01/08/2019] [Indexed: 11/19/2022] Open
Abstract
The only way to visually observe cellular viscosity, which can greatly influence biological reactions and has been linked to several human diseases, is through viscosity imaging. Imaging cellular viscosity has allowed the mapping of viscosity in cells, and the next frontier is targeted viscosity imaging of organelles and their microenvironments. Here we present a fluorescent molecular rotor/FLIM framework to image both organellar viscosity and membrane fluidity, using a combination of chemical targeting and organelle extraction. For demonstration, we image matrix viscosity and membrane fluidity of mitochondria, which have been linked to human diseases, including Alzheimer's Disease and Leigh's syndrome. We find that both are highly dynamic and responsive to small environmental and physiological changes, even under non-pathological conditions. This shows that neither viscosity nor fluidity can be assumed to be fixed and underlines the need for single-cell, and now even single-organelle, imaging.
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Affiliation(s)
| | - Arjuna L. James
- Department of Physics, King’s College London, London, United Kingdom
| | - Pei-Hua Chung
- Department of Physics, King’s College London, London, United Kingdom
| | - Penny E. Morton
- Randall Centre for Cell and Molecular Biophysics, King’s College London, London, United Kingdom
| | - Maddy Parsons
- Randall Centre for Cell and Molecular Biophysics, King’s College London, London, United Kingdom
| | - Cécile A. Dreiss
- Institute of Pharmaceutical Science, King’s College London, London, United Kingdom
| | | | - Gokhan Yahioglu
- Department of Chemistry, Imperial College London, London, United Kingdom
| | - Klaus Suhling
- Department of Physics, King’s College London, London, United Kingdom
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