1
|
Shimolina LE, Khlynova AE, Gulin AA, Elagin VV, Gubina MV, Bureev PA, Sherin PS, Kuimova MK, Shirmanova MV. Photodynamic therapy with Photoditazine increases microviscosity of cancer cells membrane in cellulo and in vivo. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY. B, BIOLOGY 2024; 259:113007. [PMID: 39137702 DOI: 10.1016/j.jphotobiol.2024.113007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/26/2024] [Revised: 08/01/2024] [Accepted: 08/06/2024] [Indexed: 08/15/2024]
Abstract
Photodynamic therapy (PDT) is a minimally invasive method for cancer treatment, one of the effects of which is the oxidation of membrane lipids. However, changes in biophysical properties of lipid membranes during PDT have been poorly explored. In this work, we investigated the effects of PDT on membrane microviscosity in cancer cells in the culture and tumor xenografts. Membrane microviscosity was visualized using fluorescence lifetime imaging microscopy (FLIM) with a viscosity-sensitive rotor BODIPY2. It was found that PDT using chlorine e6-based photosensitizer Photoditazine caused a quick, steady elevation of membrane microviscosity both in cellulo and in vivo. The proposed mechanisms responsible for the increase in microviscosity was lipid peroxidation by reactive oxygen species that resulted in a decrease of phosphatidylcholine and the fraction of unsaturated fatty acids in the membranes. Our results suggest that the increased microviscosity is an important factor that contributes to tumor cell damage during PDT.
Collapse
Affiliation(s)
- Liubov E Shimolina
- Institute of Experimental Oncology and Biomedical Technologies, Privolzhsky Research Medical University, Minin and Pozharsky Square, 10/1, 603005 Nizhny Novgorod, Russian Federation
| | - Aleksandra E Khlynova
- Institute of Experimental Oncology and Biomedical Technologies, Privolzhsky Research Medical University, Minin and Pozharsky Square, 10/1, 603005 Nizhny Novgorod, Russian Federation
| | - Aleksander A Gulin
- N.N. Semenov Federal Research Center for Chemical Physics, Russian Academy of Sciences, Moscow 119991, Russian Federation
| | - Vadim V Elagin
- Institute of Experimental Oncology and Biomedical Technologies, Privolzhsky Research Medical University, Minin and Pozharsky Square, 10/1, 603005 Nizhny Novgorod, Russian Federation
| | - Margarita V Gubina
- N.N. Semenov Federal Research Center for Chemical Physics, Russian Academy of Sciences, Moscow 119991, Russian Federation
| | - Pavel A Bureev
- Institute of Experimental Oncology and Biomedical Technologies, Privolzhsky Research Medical University, Minin and Pozharsky Square, 10/1, 603005 Nizhny Novgorod, Russian Federation
| | - Petr S Sherin
- Department of Chemistry, Imperial College London, White City Campus, London, W12 0BZ, United Kingdom
| | - Marina K Kuimova
- Department of Chemistry, Imperial College London, White City Campus, London, W12 0BZ, United Kingdom
| | - Marina V Shirmanova
- Institute of Experimental Oncology and Biomedical Technologies, Privolzhsky Research Medical University, Minin and Pozharsky Square, 10/1, 603005 Nizhny Novgorod, Russian Federation.
| |
Collapse
|
2
|
Bregnhøj M, Thorning F, Ogilby PR. Singlet Oxygen Photophysics: From Liquid Solvents to Mammalian Cells. Chem Rev 2024. [PMID: 39106038 DOI: 10.1021/acs.chemrev.4c00105] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/07/2024]
Abstract
Molecular oxygen, O2, has long provided a cornerstone for studies in chemistry, physics, and biology. Although the triplet ground state, O2(X3Σg-), has garnered much attention, the lowest excited electronic state, O2(a1Δg), commonly called singlet oxygen, has attracted appreciable interest, principally because of its unique chemical reactivity in systems ranging from the Earth's atmosphere to biological cells. Because O2(a1Δg) can be produced and deactivated in processes that involve light, the photophysics of O2(a1Δg) are equally important. Moreover, pathways for O2(a1Δg) deactivation that regenerate O2(X3Σg-), which address fundamental principles unto themselves, kinetically compete with the chemical reactions of O2(a1Δg) and, thus, have practical significance. Due to technological advances (e.g., lasers, optical detectors, microscopes), data acquired in the past ∼20 years have increased our understanding of O2(a1Δg) photophysics appreciably and facilitated both spatial and temporal control over the behavior of O2(a1Δg). One goal of this Review is to summarize recent developments that have broad ramifications, focusing on systems in which oxygen forms a contact complex with an organic molecule M (e.g., a liquid solvent). An important concept is the role played by the M+•O2-• charge-transfer state in both the formation and deactivation of O2(a1Δg).
Collapse
Affiliation(s)
- Mikkel Bregnhøj
- Department of Chemistry, Aarhus University, 140 Langelandsgade, Aarhus 8000, Denmark
| | - Frederik Thorning
- Department of Chemistry, Aarhus University, 140 Langelandsgade, Aarhus 8000, Denmark
| | - Peter R Ogilby
- Department of Chemistry, Aarhus University, 140 Langelandsgade, Aarhus 8000, Denmark
| |
Collapse
|
3
|
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.
Collapse
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
| |
Collapse
|
4
|
Paez-Perez M, Dent MR, Brooks NJ, Kuimova MK. Viscosity-Sensitive Membrane Dyes as Tools To Estimate the Crystalline Structure of Lipid Bilayers. Anal Chem 2023; 95:12006-12014. [PMID: 37526607 PMCID: PMC10433245 DOI: 10.1021/acs.analchem.3c01747] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2023] [Accepted: 07/12/2023] [Indexed: 08/02/2023]
Abstract
Lipid membranes are crucial for cellular integrity and regulation, and tight control of their structural and mechanical properties is vital to ensure that they function properly. Fluorescent probes sensitive to the membrane's microenvironment are useful for investigating lipid membrane properties; however, there is currently a lack of quantitative correlation between the exact parameters of lipid organization and a readout from these dyes. Here, we investigate this relationship for "molecular rotors", or microviscosity sensors, by simultaneously measuring their fluorescence lifetime to determine the membrane viscosity, while using X-ray diffraction to determine the membrane's structural properties. Our results reveal a phase-dependent correlation between the membrane's structural parameters and mechanical properties measured by a BODIPY-based molecular rotor, giving excellent predictive power for the structural descriptors of the lipid bilayer. We also demonstrate that differences in membrane thickness between different lipid phases are not a prerequisite for the formation of lipid microdomains and that this requirement can be disrupted by the presence of line-active molecules. Our results underpin the use of membrane-sensitive dyes as reporters of the structure of lipid membranes.
Collapse
Affiliation(s)
- Miguel Paez-Perez
- MSRH, Department of Chemistry, Imperial College London, Wood Lane, London W12 0BZ, U.K.
| | - Michael R. Dent
- MSRH, Department of Chemistry, Imperial College London, Wood Lane, London W12 0BZ, U.K.
| | - Nicholas J. Brooks
- MSRH, Department of Chemistry, Imperial College London, Wood Lane, London W12 0BZ, U.K.
| | - Marina K. Kuimova
- MSRH, Department of Chemistry, Imperial College London, Wood Lane, London W12 0BZ, U.K.
| |
Collapse
|
5
|
Polita A, Stancikaitė M, Žvirblis R, Maleckaitė K, Dodonova-Vaitkūnienė J, Tumkevičius S, Shivabalan AP, Valinčius G. Designing a green-emitting viscosity-sensitive 4,4-difluoro-4-bora-3a,4a-diaza- s-indacene (BODIPY) probe for plasma membrane viscosity imaging. RSC Adv 2023; 13:19257-19264. [PMID: 37377877 PMCID: PMC10291278 DOI: 10.1039/d3ra04126c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2023] [Accepted: 06/20/2023] [Indexed: 06/29/2023] Open
Abstract
Viscosity is a key characteristic of lipid membranes - it governs the passive diffusion of solutes and affects the lipid raft formation and membrane fluidity. Precise determination of viscosity values in biological systems is of great interest and viscosity-sensitive fluorescent probes offer a convenient solution for this task. In this work we present a novel membrane-targeting and water-soluble viscosity probe BODIPY-PM, which is based on one of the most frequently used probes BODIPY-C10. Despite its regular use, BODIPY-C10 suffers from poor integration into liquid-ordered lipid phases and lack of water solubility. Here, we investigate the photophysical characteristics of BODIPY-PM and demonstrate that solvent polarity only slightly affects the viscosity-sensing qualities of BODIPY-PM. In addition, with fluorescence lifetime imaging microscopy (FLIM), we imaged microviscosity in complex biological systems - large unilamellar vesicles (LUVs), tethered bilayer membranes (tBLMs) and live lung cancer cells. Our study showcases that BODIPY-PM preferentially stains the plasma membranes of live cells, equally well partitions into both liquid-ordered and liquid-disordered phases and reliably distinguishes lipid phase separation in tBLMs and LUVs.
Collapse
Affiliation(s)
- Artūras Polita
- Institute of Biochemistry, Life Sciences Center, Vilnius University Saulėtekio Av. 7 Vilnius LT-10257 Lithuania
| | - Milda Stancikaitė
- Center of Physical Sciences and Technology Saulėtekio Av. 3 Vilnius LT-10257 Lithuania
| | - Rokas Žvirblis
- Life Sciences Center, Institute of Biotechnology, Vilnius University Saulėtekio Av. 7 Vilnius LT-10257 Lithuania
| | - Karolina Maleckaitė
- Center of Physical Sciences and Technology Saulėtekio Av. 3 Vilnius LT-10257 Lithuania
| | - Jelena Dodonova-Vaitkūnienė
- Institute of Chemistry, Faculty of Chemistry and Geosciences, Vilnius University Naugarduko St. 24 Vilnius LT-03225 Lithuania
| | - Sigitas Tumkevičius
- 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
| | - Gintaras Valinčius
- Institute of Biochemistry, Life Sciences Center, Vilnius University Saulėtekio Av. 7 Vilnius LT-10257 Lithuania
| |
Collapse
|
6
|
Directly imaging emergence of phase separation in peroxidized lipid membranes. Commun Chem 2023; 6:15. [PMID: 36697756 PMCID: PMC9845225 DOI: 10.1038/s42004-022-00809-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2022] [Accepted: 12/29/2022] [Indexed: 01/19/2023] Open
Abstract
Lipid peroxidation is a process which is key in cell signaling and disease, it is exploited in cancer therapy in the form of photodynamic therapy. The appearance of hydrophilic moieties within the bilayer's hydrocarbon core will dramatically alter the structure and mechanical behavior of membranes. Here, we combine viscosity sensitive fluorophores, advanced microscopy, and X-ray diffraction and molecular simulations to directly and quantitatively measure the bilayer's structural and viscoelastic properties, and correlate these with atomistic molecular modelling. Our results indicate an increase in microviscosity and a decrease in the bending rigidity upon peroxidation of the membranes, contrary to the trend observed with non-oxidized lipids. Fluorescence lifetime imaging microscopy and MD simulations give evidence for the presence of membrane regions of different local order in the oxidized membranes. We hypothesize that oxidation promotes stronger lipid-lipid interactions, which lead to an increase in the lateral heterogeneity within the bilayer and the creation of lipid clusters of higher order.
Collapse
|
7
|
Sakaya A, Bacellar IOL, Fonseca JL, Durantini AM, McCain J, Xu L, Vignoni M, Thomas AH, Baptista MS, Cosa G. Singlet Oxygen Flux, Associated Lipid Photooxidation, and Membrane Expansion Dynamics Visualized on Giant Unilamellar Vesicles. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023; 39:442-452. [PMID: 36576408 DOI: 10.1021/acs.langmuir.2c02720] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
The physical properties of lipid membranes depend on their lipid composition. Photosensitized singlet oxygen (1O2) provides a handle to spatiotemporally control the generation of lipid hydroperoxides via the ene reaction, enabling fundamental studies on membrane dynamics in response to chemical composition changes. Critical to relating the physical properties of the lipid membrane to hydroperoxide formation is the availability of a sensitive reporter to quantify the arrival of 1O2. Here, we show that a fluorogenic α-tocopherol analogue, H4BPMHC, undergoes a >360-fold emission intensity enhancement in liposomes following a reaction with 1O2. Rapid quenching of 1O2 by the probe (kq = 4.9 × 108 M-1 s-1) ensures zero-order kinetics of probe consumption. The remarkable intensity enhancement of H4BPMHC upon 1O2 trapping, its linear temporal behavior, and its protective role in outcompeting membrane damage provide a sensitive and reliable method to quantify the 1O2 flux on lipid membranes. Armed with this probe, fluorescence microscopy studies were devised to enable (i) monitoring the flux of photosensitized 1O2 into giant unilamellar vesicles (GUVs), (ii) establishing the onset of the ene reaction with the double bonds of monounsaturated lipids, and (iii) visualizing the ensuing collective membrane expansion dynamics associated with molecular changes in the lipid structure upon hydroperoxide formation. A correlation was observed between the time for antioxidant H4BPMHC consumption by 1O2 and the onset of membrane fluctuations and surface expansion. Together, our imaging studies with H4BPMHC in GUVs provide a methodology to explore the intimate relationship between photosensitizer activity, chemical insult, membrane morphology, and its collective dynamics.
Collapse
Affiliation(s)
- Aya Sakaya
- Department of Chemistry and Quebec Center for Applied Materials (QCAM), McGill University, 801 Sherbrook Street West, Montreal, QuebecH3A 0B8, Canada
| | - Isabel O L Bacellar
- Department of Chemistry and Quebec Center for Applied Materials (QCAM), McGill University, 801 Sherbrook Street West, Montreal, QuebecH3A 0B8, Canada
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, Av. Prof. Lineu Prestes 748, São Paulo, São PauloCEP 05508-000, Brazil
| | - José Luis Fonseca
- Department of Chemistry and Quebec Center for Applied Materials (QCAM), McGill University, 801 Sherbrook Street West, Montreal, QuebecH3A 0B8, Canada
- Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas (INIFTA), Departamento de Química, Facultad de Ciencias Exactas, Universidad Nacional de La Plata (UNLP), CCT La Plata-CONICET, Casilla de Correo 16, Sucursal 4, La Plata1900, Argentina
| | - Andrés M Durantini
- Department of Chemistry and Quebec Center for Applied Materials (QCAM), McGill University, 801 Sherbrook Street West, Montreal, QuebecH3A 0B8, Canada
| | - Julia McCain
- Department of Chemistry and Quebec Center for Applied Materials (QCAM), McGill University, 801 Sherbrook Street West, Montreal, QuebecH3A 0B8, Canada
| | - Laiyi Xu
- Department of Chemistry and Quebec Center for Applied Materials (QCAM), McGill University, 801 Sherbrook Street West, Montreal, QuebecH3A 0B8, Canada
| | - Mariana Vignoni
- Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas (INIFTA), Departamento de Química, Facultad de Ciencias Exactas, Universidad Nacional de La Plata (UNLP), CCT La Plata-CONICET, Casilla de Correo 16, Sucursal 4, La Plata1900, Argentina
| | - Andrés H Thomas
- Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas (INIFTA), Departamento de Química, Facultad de Ciencias Exactas, Universidad Nacional de La Plata (UNLP), CCT La Plata-CONICET, Casilla de Correo 16, Sucursal 4, La Plata1900, Argentina
| | - Mauricio S Baptista
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, Av. Prof. Lineu Prestes 748, São Paulo, São PauloCEP 05508-000, Brazil
| | - Gonzalo Cosa
- Department of Chemistry and Quebec Center for Applied Materials (QCAM), McGill University, 801 Sherbrook Street West, Montreal, QuebecH3A 0B8, Canada
| |
Collapse
|
8
|
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.
Collapse
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
| |
Collapse
|
9
|
Bazioti V, La Rose AM, Maassen S, Bianchi F, de Boer R, Halmos B, Dabral D, Guilbaud E, Flohr-Svendsen A, Groenen AG, Marmolejo-Garza A, Koster MH, Kloosterhuis NJ, Havinga R, Pranger AT, Langelaar-Makkinje M, de Bruin A, van de Sluis B, Kohan AB, Yvan-Charvet L, van den Bogaart G, Westerterp M. T cell cholesterol efflux suppresses apoptosis and senescence and increases atherosclerosis in middle aged mice. Nat Commun 2022; 13:3799. [PMID: 35778407 PMCID: PMC9249754 DOI: 10.1038/s41467-022-31135-4] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2021] [Accepted: 05/27/2022] [Indexed: 02/04/2023] Open
Abstract
Atherosclerosis is a chronic inflammatory disease driven by hypercholesterolemia. During aging, T cells accumulate cholesterol, potentially affecting inflammation. However, the effect of cholesterol efflux pathways mediated by ATP-binding cassette A1 and G1 (ABCA1/ABCG1) on T cell-dependent age-related inflammation and atherosclerosis remains poorly understood. In this study, we generate mice with T cell-specific Abca1/Abcg1-deficiency on the low-density-lipoprotein-receptor deficient (Ldlr-/-) background. T cell Abca1/Abcg1-deficiency decreases blood, lymph node, and splenic T cells, and increases T cell activation and apoptosis. T cell Abca1/Abcg1-deficiency induces a premature T cell aging phenotype in middle-aged (12-13 months) Ldlr-/- mice, reflected by upregulation of senescence markers. Despite T cell senescence and enhanced T cell activation, T cell Abca1/Abcg1-deficiency decreases atherosclerosis and aortic inflammation in middle-aged Ldlr-/- mice, accompanied by decreased T cells in atherosclerotic plaques. We attribute these effects to T cell apoptosis downstream of T cell activation, compromising T cell functionality. Collectively, we show that T cell cholesterol efflux pathways suppress T cell apoptosis and senescence, and induce atherosclerosis in middle-aged Ldlr-/- mice.
Collapse
Affiliation(s)
- Venetia Bazioti
- grid.4494.d0000 0000 9558 4598Department of Pediatrics, University Medical Center Groningen, University of Groningen, 9713 AV Groningen, the Netherlands ,grid.5252.00000 0004 1936 973XInstitute for Cardiovascular Prevention (IPEK), Ludwig-Maximilians-Universität, 80336 Munich, Germany
| | - Anouk M. La Rose
- grid.4494.d0000 0000 9558 4598Department of Pediatrics, University Medical Center Groningen, University of Groningen, 9713 AV Groningen, the Netherlands
| | - Sjors Maassen
- grid.4830.f0000 0004 0407 1981Department of Molecular Immunology and Microbiology, Groningen Biomolecular Sciences and Biotechnology Institute, University of Groningen, 9747 AG Groningen, the Netherlands
| | - Frans Bianchi
- grid.4830.f0000 0004 0407 1981Department of Molecular Immunology and Microbiology, Groningen Biomolecular Sciences and Biotechnology Institute, University of Groningen, 9747 AG Groningen, the Netherlands
| | - Rinse de Boer
- grid.4830.f0000 0004 0407 1981Department of Molecular Immunology and Microbiology, Groningen Biomolecular Sciences and Biotechnology Institute, University of Groningen, 9747 AG Groningen, the Netherlands
| | - Benedek Halmos
- grid.4494.d0000 0000 9558 4598Department of Pediatrics, University Medical Center Groningen, University of Groningen, 9713 AV Groningen, the Netherlands
| | - Deepti Dabral
- grid.4830.f0000 0004 0407 1981Department of Molecular Immunology and Microbiology, Groningen Biomolecular Sciences and Biotechnology Institute, University of Groningen, 9747 AG Groningen, the Netherlands
| | - Emma Guilbaud
- grid.462370.40000 0004 0620 5402Institut National de la Santé et de la Recherche Médicale (INSERM) U1065, Université Côte d’Azur, Centre Méditerranéen de Médecine Moléculaire (C3M), Atip-Avenir, Fédération Hospitalo-Universitaire (FHU) Oncoage, 06204 Nice, France
| | - Arthur Flohr-Svendsen
- grid.4494.d0000 0000 9558 4598European Research Institute for the Biology of Ageing, University Medical Center Groningen, University of Groningen, 9713 AV Groningen, the Netherlands
| | - Anouk G. Groenen
- grid.4494.d0000 0000 9558 4598Department of Pediatrics, University Medical Center Groningen, University of Groningen, 9713 AV Groningen, the Netherlands
| | - Alejandro Marmolejo-Garza
- grid.4494.d0000 0000 9558 4598Department of Pediatrics, University Medical Center Groningen, University of Groningen, 9713 AV Groningen, the Netherlands
| | - Mirjam H. Koster
- grid.4494.d0000 0000 9558 4598Department of Pediatrics, University Medical Center Groningen, University of Groningen, 9713 AV Groningen, the Netherlands
| | - Niels J. Kloosterhuis
- grid.4494.d0000 0000 9558 4598Department of Pediatrics, University Medical Center Groningen, University of Groningen, 9713 AV Groningen, the Netherlands
| | - Rick Havinga
- grid.4494.d0000 0000 9558 4598Department of Pediatrics, University Medical Center Groningen, University of Groningen, 9713 AV Groningen, the Netherlands
| | - Alle T. Pranger
- grid.4494.d0000 0000 9558 4598Laboratory of Medicine, University Medical Center Groningen, University of Groningen, 9713 AV Groningen, the Netherlands
| | - Miriam Langelaar-Makkinje
- grid.4494.d0000 0000 9558 4598Department of Pediatrics, University Medical Center Groningen, University of Groningen, 9713 AV Groningen, the Netherlands
| | - Alain de Bruin
- grid.4494.d0000 0000 9558 4598Department of Pediatrics, University Medical Center Groningen, University of Groningen, 9713 AV Groningen, the Netherlands ,grid.5477.10000000120346234Department of Biomolecular Health Sciences, Dutch Molecular Pathology Center, Faculty of Veterinary Medicine, Utrecht University, 3584 CL Utrecht, the Netherlands
| | - Bart van de Sluis
- grid.4494.d0000 0000 9558 4598Department of Pediatrics, University Medical Center Groningen, University of Groningen, 9713 AV Groningen, the Netherlands
| | - Alison B. Kohan
- grid.21925.3d0000 0004 1936 9000Division of Endocrinology and Metabolism, Department of Medicine, University of Pittsburgh, Pittsburgh, PA 15260 USA
| | - Laurent Yvan-Charvet
- grid.462370.40000 0004 0620 5402Institut National de la Santé et de la Recherche Médicale (INSERM) U1065, Université Côte d’Azur, Centre Méditerranéen de Médecine Moléculaire (C3M), Atip-Avenir, Fédération Hospitalo-Universitaire (FHU) Oncoage, 06204 Nice, France
| | - Geert van den Bogaart
- grid.4830.f0000 0004 0407 1981Department of Molecular Immunology and Microbiology, Groningen Biomolecular Sciences and Biotechnology Institute, University of Groningen, 9747 AG Groningen, the Netherlands
| | - Marit Westerterp
- grid.4494.d0000 0000 9558 4598Department of Pediatrics, University Medical Center Groningen, University of Groningen, 9713 AV Groningen, the Netherlands
| |
Collapse
|
10
|
Savyuk MO, Turubanova VD, Mishchenko TA, Lermontova SA, Klapshina LG, Krysko DV, Vedunova MV. Unraveling of Functional Activity of Primary Hippocampal Neuron-Glial Networks in Photodynamic Therapy Based on Tetracyanotetra(aryl)porphyrazines. Cells 2022; 11:cells11071212. [PMID: 35406776 PMCID: PMC8997601 DOI: 10.3390/cells11071212] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2022] [Revised: 03/29/2022] [Accepted: 04/01/2022] [Indexed: 02/04/2023] Open
Abstract
The current efforts in photodynamic therapy (PDT) of brain cancer are focused on the development of novel photosensitizers with improved photodynamic properties, targeted specific localization, and sensitivity to the irradiation dose, ensuring the effectiveness of PDT with fewer side effects for normal nerve tissue. Here, we characterize the effects of four photosensitizers of the tetracyanotetra(aryl)porphyrazine group (pz I–IV) on the functional activity of neuron-glial networks in primary hippocampal cultures in their application in normal conditions and under PDT. The data revealed that the application of pz I–IV leads to a significant decrease in the main parameters of the functional calcium activity of neuron-glial networks and pronounced changes in the network characteristics. The observed negative effects of pz I–IV were aggravated under PDT. Considering the significant restructuring of the functional architectonics of neuron-glial networks that can lead to severe impairments in synaptic transmission and loss of brain functions, and the feasibility of direct application of PDT based on pz I–IV in the therapy of brain tumors is highly controversial. Nevertheless, the unique properties of pz I–IV retain a great prospect of their use in the therapy of tumors of another origin and cellular metabolism.
Collapse
Affiliation(s)
- Maria O. Savyuk
- Department of Basic and Medical Genetics, Institute of Biology and Biomedicine, Lobachevsky State University of Nizhny Novgorod, 23 Gagarin ave., 603022 Nizhny Novgorod, Russia; (M.O.S.); (V.D.T.); (T.A.M.); (D.V.K.)
| | - Victoria D. Turubanova
- Department of Basic and Medical Genetics, Institute of Biology and Biomedicine, Lobachevsky State University of Nizhny Novgorod, 23 Gagarin ave., 603022 Nizhny Novgorod, Russia; (M.O.S.); (V.D.T.); (T.A.M.); (D.V.K.)
- Department of Neurotechnology, Institute of Biology and Biomedicine, Lobachevsky State University of Nizhny Novgorod, 23 Gagarin ave., 603022 Nizhny Novgorod, Russia
| | - Tatiana A. Mishchenko
- Department of Basic and Medical Genetics, Institute of Biology and Biomedicine, Lobachevsky State University of Nizhny Novgorod, 23 Gagarin ave., 603022 Nizhny Novgorod, Russia; (M.O.S.); (V.D.T.); (T.A.M.); (D.V.K.)
- Department of Neurotechnology, Institute of Biology and Biomedicine, Lobachevsky State University of Nizhny Novgorod, 23 Gagarin ave., 603022 Nizhny Novgorod, Russia
| | - Svetlana A. Lermontova
- Sector of Chromophors for Medicine, G.A. Razuvaev Institute of Organometallic Chemistry of the Russian Academy of Sciences, 49 Tropinin st., 603137 Nizhny Novgorod, Russia; (S.A.L.); (L.G.K.)
| | - Larisa G. Klapshina
- Sector of Chromophors for Medicine, G.A. Razuvaev Institute of Organometallic Chemistry of the Russian Academy of Sciences, 49 Tropinin st., 603137 Nizhny Novgorod, Russia; (S.A.L.); (L.G.K.)
| | - Dmitri V. Krysko
- Department of Basic and Medical Genetics, Institute of Biology and Biomedicine, Lobachevsky State University of Nizhny Novgorod, 23 Gagarin ave., 603022 Nizhny Novgorod, Russia; (M.O.S.); (V.D.T.); (T.A.M.); (D.V.K.)
- Cell Death Investigation and Therapy Laboratory (CDIT), Department of Human Structure and Repair, Ghent University, C. Heymanslaan 10, Building B3, 4th Floor, 9000 Ghent, Belgium
- Cancer Research Institute Ghent, 9000 Ghent, Belgium
| | - Maria V. Vedunova
- Department of Basic and Medical Genetics, Institute of Biology and Biomedicine, Lobachevsky State University of Nizhny Novgorod, 23 Gagarin ave., 603022 Nizhny Novgorod, Russia; (M.O.S.); (V.D.T.); (T.A.M.); (D.V.K.)
- Department of Neurotechnology, Institute of Biology and Biomedicine, Lobachevsky State University of Nizhny Novgorod, 23 Gagarin ave., 603022 Nizhny Novgorod, Russia
- Correspondence: ; Tel.: +7-915-937-55-55
| |
Collapse
|
11
|
Rezende LG, Tasso TT, Candido PHS, Baptista MS. Assessing Photosensitized Membrane Damage: Available Tools and Comprehensive Mechanisms. Photochem Photobiol 2021; 98:572-590. [PMID: 34931324 DOI: 10.1111/php.13582] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2021] [Accepted: 12/15/2021] [Indexed: 11/30/2022]
Abstract
Lipids are important targets of the photosensitized oxidation reactions, forming important signaling molecules, disorganizing and permeabilizing membranes, and consequently inducing a variety of biological responses. Although the initial steps of the photosensitized oxidative damage in lipids are known to occur by both Type I and Type II mechanisms, the progression of the peroxidation reaction, which leads to important end-point biological responses, is poorly known. There are many experimental tools used to study the products of lipid oxidation, but neither the methods nor their resulting observations were critically compared. In this article, we will review the tools most frequently used and the key concepts raised by them in order to rationalize a comprehensive model for the initiation and the progression steps of the photoinduced lipid oxidation.
Collapse
Affiliation(s)
- Laura G Rezende
- Chemistry Department, Institute of Exact Sciences, Universidade Federal de Juiz de Fora, Juiz de Fora, Brazil
| | - Thiago T Tasso
- Chemistry Department, Institute of Exact Sciences, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Pedro H S Candido
- Biochemistry Department, Chemistry Institute, Universidade de São Paulo, Sao Paulo, Brazil
| | - Mauricio S Baptista
- Biochemistry Department, Chemistry Institute, Universidade de São Paulo, Sao Paulo, Brazil
| |
Collapse
|
12
|
Shimolina L, Gulin A, Ignatova N, Druzhkova I, Gubina M, Lukina M, Snopova L, Zagaynova E, Kuimova MK, Shirmanova M. The Role of Plasma Membrane Viscosity in the Response and Resistance of Cancer Cells to Oxaliplatin. Cancers (Basel) 2021; 13:cancers13246165. [PMID: 34944789 PMCID: PMC8699340 DOI: 10.3390/cancers13246165] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Revised: 11/19/2021] [Accepted: 11/30/2021] [Indexed: 11/16/2022] Open
Abstract
Simple Summary Understanding the role of the plasma membrane in the responses of cancer cells to chemotherapy is important because the cell membrane is directly involved in drug transport and the regulation of numerous biological processes. However, the role of the plasma membrane in cell resistance to platinum drugs like oxaliplatin is not fully understood. In this study we identified the changes to plasma membrane viscosity and lipid composition induced by oxaliplatin in responsive, cultured cancer cells and in mouse tumors. It was also found that the acquisition of chemoresistance is accompanied by modification of membrane lipids in ways that preserve the viscous properties unchanged upon further treatment. Therefore, new therapeutic approaches could be developed to reverse chemoresistance based on membrane lipid modifications and the de-stabilisation of membrane viscosity. Abstract Maintenance of the biophysical properties of membranes is essential for cell survival upon external perturbations. However, the links between a fluid membrane state and the drug resistance of cancer cells remain elusive. Here, we investigated the role of membrane viscosity and lipid composition in the responses of cancer cells to oxaliplatin and the development of chemoresistance. Plasma membrane viscosity was monitored in live colorectal cancer cells and tumor xenografts using two-photon excited fluorescence lifetime imaging microscopy (FLIM) using the fluorescent molecular rotor BODIPY 2. The lipid profile was analyzed using time-of-flight secondary ion mass spectrometry (ToF-SIMS). It was found that the plasma membrane viscosity increased upon oxaliplatin treatment, both in vitro and in vivo, and that this correlated with lower phosphatidylcholine and higher cholesterol content. The emergence of resistance to oxaliplatin was accompanied by homeostatic adaptation of the membrane lipidome, and the recovery of lower viscosity. These results suggest that maintaining a constant plasma membrane viscosity via remodeling of the lipid profile is crucial for drug resistance in cancer.
Collapse
Affiliation(s)
- Liubov Shimolina
- Institute of Experimental Oncology and Biomedical Technologies, Privolzhsky Research Medical University, Minin and Pozharsky Square, 10/1, 603005 Nizhny Novgorod, Russia; (L.S.); (N.I.); (I.D.); (M.L.); (L.S.)
- Institute of Biology and Biomedicine, Nizhny Novgorod State University, Gagarin Avenue 23, 603950 Nizhny Novgorod, Russia;
| | - Alexander Gulin
- The Semenov Institute of Chemical Physics of Russian Academy of Sciences (RAS), Kosygina Str. 4, 117977 Moscow, Russia; (A.G.); (M.G.)
| | - Nadezhda Ignatova
- Institute of Experimental Oncology and Biomedical Technologies, Privolzhsky Research Medical University, Minin and Pozharsky Square, 10/1, 603005 Nizhny Novgorod, Russia; (L.S.); (N.I.); (I.D.); (M.L.); (L.S.)
| | - Irina Druzhkova
- Institute of Experimental Oncology and Biomedical Technologies, Privolzhsky Research Medical University, Minin and Pozharsky Square, 10/1, 603005 Nizhny Novgorod, Russia; (L.S.); (N.I.); (I.D.); (M.L.); (L.S.)
| | - Margarita Gubina
- The Semenov Institute of Chemical Physics of Russian Academy of Sciences (RAS), Kosygina Str. 4, 117977 Moscow, Russia; (A.G.); (M.G.)
| | - Maria Lukina
- Institute of Experimental Oncology and Biomedical Technologies, Privolzhsky Research Medical University, Minin and Pozharsky Square, 10/1, 603005 Nizhny Novgorod, Russia; (L.S.); (N.I.); (I.D.); (M.L.); (L.S.)
| | - Ludmila Snopova
- Institute of Experimental Oncology and Biomedical Technologies, Privolzhsky Research Medical University, Minin and Pozharsky Square, 10/1, 603005 Nizhny Novgorod, Russia; (L.S.); (N.I.); (I.D.); (M.L.); (L.S.)
| | - Elena Zagaynova
- Institute of Biology and Biomedicine, Nizhny Novgorod State University, Gagarin Avenue 23, 603950 Nizhny Novgorod, Russia;
| | - Marina K. Kuimova
- Department of Chemistry, Faculty of Natural Sciences, Imperial College London, South Kensington, London SW7 2AZ, UK;
| | - Marina Shirmanova
- Institute of Experimental Oncology and Biomedical Technologies, Privolzhsky Research Medical University, Minin and Pozharsky Square, 10/1, 603005 Nizhny Novgorod, Russia; (L.S.); (N.I.); (I.D.); (M.L.); (L.S.)
- Correspondence:
| |
Collapse
|
13
|
Sherin PS, Vyšniauskas A, López-Duarte I, Ogilby PR, Kuimova MK. Visualising UV-A light-induced damage to plasma membranes of eye lens. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2021; 225:112346. [PMID: 34736070 DOI: 10.1016/j.jphotobiol.2021.112346] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/16/2021] [Revised: 10/01/2021] [Accepted: 10/19/2021] [Indexed: 01/16/2023]
Abstract
An eye lens is constantly exposed to the solar UV radiation, which is considered the most important external source of age-related changes to eye lens constituents. The accumulation of modifications of proteins and lipids with age can eventually lead to the development of progressive lens opacifications, such as cataracts. Though the impact of solar UV radiation on the structure and function of proteins is actively studied, little is known about the effect of photodamage on plasma membranes of lens cells. In this work we exploit Fluorescence Lifetime Imaging Microscopy (FLIM), together with viscosity-sensitive fluorophores termed molecular rotors, to study the changes in viscosity of plasma membranes of porcine eye lens resulting from two different types of photodamage: Type I (electron transfer) and Type II (singlet oxygen) reactions. We demonstrate that these two types of photodamage result in clearly distinct changes in viscosity - a decrease in the case of Type I damage and an increase in the case of Type II processes. Finally, to simulate age-related changes that occur in vivo, we expose an intact eye lens to UV-A light under anaerobic conditions. The observed decrease in viscosity within plasma membranes is consistent with the ability of eye lens constituents to sensitize Type I photodamage under natural irradiation conditions. These changes are likely to alter the transport of metabolites and predispose the whole tissue to the development of pathological processes such as cataracts.
Collapse
Affiliation(s)
- Peter S Sherin
- Chemistry Department, Molecular Sciences Research Hub, Imperial College London, 82 Wood Lane, London W12 0BZ, UK; International Tomography Center SB RAS, Institutskaya street 3A, Novosibirsk 630090, Russia.
| | - Aurimas Vyšniauskas
- Center for Physical Sciences and Technology, Saulėtekio av. 3, Vilnius LT-10257, Lithuania; Chemistry Department, Vilnius University, Naugarduko st. 24, Vilnius LT-03225, Lithuania
| | - Ismael López-Duarte
- Chemistry Department, Molecular Sciences Research Hub, Imperial College London, 82 Wood Lane, London W12 0BZ, UK
| | - Peter R Ogilby
- Department of Chemistry, Aarhus University, Langelandsgade 140, Aarhus DK-8000, Denmark
| | - Marina K Kuimova
- Chemistry Department, Molecular Sciences Research Hub, Imperial College London, 82 Wood Lane, London W12 0BZ, UK.
| |
Collapse
|
14
|
Balalaeva IV, Mishchenko TA, Turubanova VD, Peskova NN, Shilyagina NY, Plekhanov VI, Lermontova SA, Klapshina LG, Vedunova MV, Krysko DV. Cyanoarylporphyrazines with High Viscosity Sensitivity: A Step towards Dosimetry-Assisted Photodynamic Cancer Treatment. Molecules 2021; 26:molecules26195816. [PMID: 34641360 PMCID: PMC8510116 DOI: 10.3390/molecules26195816] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2021] [Revised: 09/09/2021] [Accepted: 09/22/2021] [Indexed: 12/30/2022] Open
Abstract
Despite the significant relevance of photodynamic therapy (PDT) as an efficient strategy for primary and adjuvant anticancer treatment, several challenges compromise its efficiency. In order to develop an "ideal photosensitizer" and the requirements applied to photosensitizers for PDT, there is still a need for new photodynamic agents with improved photophysical and photobiological properties. In this study, we performed a detailed characterization of two tetracyanotetra(aryl)porphyrazine dyes with 4-biphenyl (pz II) and 4-diethylaminophenyl (pz IV) groups in the periphery of the porphyrazine macrocycle. Photophysical properties, namely, fluorescence quantum yield and lifetime of both photosensitizers, demonstrate extremely high dependence on the viscosity of the environment, which enables them to be used as viscosity sensors. PzII and pz IV easily enter cancer cells and efficiently induce cell death under light irradiation. Using fluorescence lifetime imaging microscopy, we demonstrated the possibility of assessing local intracellular viscosity and visualizing viscosity changes driven by PDT treatment with the compounds. Thus, pz II and pz IV combine the features of potent photodynamic agents and viscosity sensors. These data suggest that the unique properties of the compounds provide a tool for PDT dosimetry and tailoring the PDT treatment regimen to the individual characteristics of each patient.
Collapse
Affiliation(s)
- Irina V. Balalaeva
- Department of Biophysics, Institute of Biology and Biomedicine, Lobachevsky State University of Nizhny Novgorod, 23 Gagarin ave., 603022 Nizhny Novgorod, Russia; (I.V.B.); (N.N.P.); (N.Y.S.)
| | - Tatiana A. Mishchenko
- Department of Neurotechnology, Institute of Biology and Biomedicine, Lobachevsky State University of Nizhny Novgorod, 23 Gagarin ave., 603022 Nizhny Novgorod, Russia; (T.A.M.); (V.D.T.); (M.V.V.)
- Department of Basic and Medical Genetics, Institute of Biology and Biomedicine, Lobachevsky State University of Nizhny Novgorod, 23 Gagarin ave., 603022 Nizhny Novgorod, Russia
| | - Victoria D. Turubanova
- Department of Neurotechnology, Institute of Biology and Biomedicine, Lobachevsky State University of Nizhny Novgorod, 23 Gagarin ave., 603022 Nizhny Novgorod, Russia; (T.A.M.); (V.D.T.); (M.V.V.)
- Department of Basic and Medical Genetics, Institute of Biology and Biomedicine, Lobachevsky State University of Nizhny Novgorod, 23 Gagarin ave., 603022 Nizhny Novgorod, Russia
| | - Nina N. Peskova
- Department of Biophysics, Institute of Biology and Biomedicine, Lobachevsky State University of Nizhny Novgorod, 23 Gagarin ave., 603022 Nizhny Novgorod, Russia; (I.V.B.); (N.N.P.); (N.Y.S.)
| | - Natalia Y. Shilyagina
- Department of Biophysics, Institute of Biology and Biomedicine, Lobachevsky State University of Nizhny Novgorod, 23 Gagarin ave., 603022 Nizhny Novgorod, Russia; (I.V.B.); (N.N.P.); (N.Y.S.)
| | - Vladimir I. Plekhanov
- Department of Radiophysical Methods in Medicine, Federal Research Center Institute of Applied Physics of the Russian Academy of Sciences, 46 Ul’yanov Street, 603950 Nizhny Novgorod, Russia;
| | - Svetlana A. Lermontova
- Sector of Chromophors for Medicine, G.A. Razuvaev Institute of Organometallic Chemistry of the Russian Academy of Sciences, 49 Tropinin st., 603137 Nizhny Novgorod, Russia; (S.A.L.); (L.G.K.)
| | - Larisa G. Klapshina
- Sector of Chromophors for Medicine, G.A. Razuvaev Institute of Organometallic Chemistry of the Russian Academy of Sciences, 49 Tropinin st., 603137 Nizhny Novgorod, Russia; (S.A.L.); (L.G.K.)
| | - Maria V. Vedunova
- Department of Neurotechnology, Institute of Biology and Biomedicine, Lobachevsky State University of Nizhny Novgorod, 23 Gagarin ave., 603022 Nizhny Novgorod, Russia; (T.A.M.); (V.D.T.); (M.V.V.)
- Department of Basic and Medical Genetics, Institute of Biology and Biomedicine, Lobachevsky State University of Nizhny Novgorod, 23 Gagarin ave., 603022 Nizhny Novgorod, Russia
| | - Dmitri V. Krysko
- Department of Basic and Medical Genetics, Institute of Biology and Biomedicine, Lobachevsky State University of Nizhny Novgorod, 23 Gagarin ave., 603022 Nizhny Novgorod, Russia
- Cell Death Investigation and Therapy Laboratory (CDIT), Anatomy and Embryology Unit, Department of Human Structure and Repair, Ghent University, C. Heymanslaan 10, Building B3, 4th Floor, 9000 Ghent, Belgium
- Cancer Research Institute Ghent, 9000 Ghent, Belgium
- Department of Pathophysiology, Sechenov First Moscow State Medical University (Sechenov University), 8-2 Trubetskaya st., 119991 Moscow, Russia
- Correspondence: ; Tel.: +32-9-332-3396
| |
Collapse
|
15
|
Maleckaitė K, Dodonova J, Toliautas S, Žilėnaitė R, Jurgutis D, Karabanovas V, Tumkevičius S, Vyšniauskas A. Designing a Red-Emitting Viscosity-Sensitive BODIPY Fluorophore for Intracellular Viscosity Imaging. Chemistry 2021; 27:16768-16775. [PMID: 34553449 DOI: 10.1002/chem.202102743] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2021] [Indexed: 11/11/2022]
Abstract
Viscosity imaging at a microscopic scale can provide important information about biosystems, including the development of serious illnesses. Microviscosity imaging is achievable with viscosity-sensitive fluorophores, the most popular of which are based on the BODIPY group. However, most of the BODIPY probes fluoresce green light, whereas the red luminescence is desired for the imaging of biological samples. Designing a new viscosity probe with suitable spectroscopic properties is a challenging task because it is difficult to preserve viscosity sensitivity after modifying the molecular structure. Here we describe how we developed a new red-emitting, viscosity-sensitive, BODIPY fluorophore BP-PH-2M-NO2 that is suitable for reliable intracellular viscosity imaging of lipid droplets in MCF-7 breast cancer cells. The design of BP-PH-2M-NO2 was aided by DFT calculations that allowed a successful prediction of the viscosity sensitivity of fluorophores before synthesis. In summary, we report a new red viscosity probe possessing monoexponential fluorescence decay that makes it attractive for lifetime-based viscosity imaging.
Collapse
Affiliation(s)
- Karolina Maleckaitė
- Center of Physical Sciences and Technology, Saulėtekio av. 3, Vilnius, LT, 10257, Lithuania
| | - Jelena Dodonova
- Institute of Chemistry, Faculty of Chemistry and Geosciences, Vilnius University, Naugarduko str. 24, Vilnius, LT, 03225, Lithuania
| | - Stepas Toliautas
- Institute of Chemical Physics, Faculty of Physics, Vilnius University, Saulėtekio av. 9-III, Vilnius, LT, 10222, Lithuania
| | - Rugilė Žilėnaitė
- Center of Physical Sciences and Technology, Saulėtekio av. 3, Vilnius, LT, 10257, Lithuania
| | - Džiugas Jurgutis
- Biomedical Physics Laboratory, National Cancer Institute, P. Baublio str. 3b, Vilnius, LT, 08406, Lithuania
| | - Vitalijus Karabanovas
- Biomedical Physics Laboratory, National Cancer Institute, P. Baublio str. 3b, Vilnius, LT, 08406, Lithuania.,Department of Chemistry and Bioengineering, Vilnius Gediminas Technical University, Saulėtekio av. 11, Vilnius, LT, 10223, Lithuania
| | - Sigitas Tumkevičius
- Institute of Chemistry, Faculty of Chemistry and Geosciences, Vilnius University, Naugarduko str. 24, Vilnius, LT, 03225, Lithuania
| | - Aurimas Vyšniauskas
- Center of Physical Sciences and Technology, Saulėtekio av. 3, Vilnius, LT, 10257, Lithuania
| |
Collapse
|
16
|
Scanavachi G, Coutinho A, Fedorov AA, Prieto M, Melo AM, Itri R. Lipid Hydroperoxide Compromises the Membrane Structure Organization and Softens Bending Rigidity. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2021; 37:9952-9963. [PMID: 34374545 DOI: 10.1021/acs.langmuir.1c00830] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Lipid hydroperoxides are key mediators of diseases and cell death. In this work, the structural and dynamic perturbations induced by the hydroperoxidized POPC lipid (POPC-OOH) in fluid POPC membranes, at both 23 and 37 °C, were addressed using advanced small-angle X-ray scattering (SAXS) and fluorescence methodologies. Notably, SAXS reveals that the hydroperoxide group decreases the lipid bilayer bending rigidity. This alteration disfavors the bilayer stacking and increases the swelling in-between stacked bilayers. We further investigated the changes in the apolar/polar interface of hydroperoxide-containing membranes through time-resolved fluorescence/anisotropy experiments of the probe TMA-DPH and time-dependent fluorescence shifts of Laurdan. A shorter mean fluorescence lifetime for TMA-DPH was obtained in enriched POPC-OOH membranes, revealing a higher degree of hydration near the membrane interface. Moreover, a higher microviscosity near TMA-DPH and lower order are predicted for these oxidized membranes, at variance with the usual trend of variation of these two parameters. Finally, the complex relaxation process of Laurdan in pure POPC-OOH membranes also indicates a higher membrane hydration and viscosity in the close vicinity of the -OOH moiety. Altogether, our combined approach reveals that the hydroperoxide group promotes alterations in the membrane structure organization, namely, at the level of membrane order, viscosity, and bending rigidity.
Collapse
Affiliation(s)
- Gustavo Scanavachi
- Institute of Physics, University of São Paulo, São Paulo 05508-090, Brazil
| | - Ana Coutinho
- iBB-Institute for Bioengineering and Biosciences, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, Lisboa 1049-001, Portugal
- Dep. Química e Bioquímica, Faculdade de Ciências, Universidade de Lisboa, Campo Grande, Lisboa 1749-016, Portugal
- Associate Laboratory i4HB-Institute for Health and Bioeconomy at Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, Lisboa 1049-001, Portugal
| | - Alexander Andreevich Fedorov
- iBB-Institute for Bioengineering and Biosciences, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, Lisboa 1049-001, Portugal
- Associate Laboratory i4HB-Institute for Health and Bioeconomy at Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, Lisboa 1049-001, Portugal
| | - Manuel Prieto
- iBB-Institute for Bioengineering and Biosciences, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, Lisboa 1049-001, Portugal
- Associate Laboratory i4HB-Institute for Health and Bioeconomy at Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, Lisboa 1049-001, Portugal
| | - Ana M Melo
- iBB-Institute for Bioengineering and Biosciences, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, Lisboa 1049-001, Portugal
- Associate Laboratory i4HB-Institute for Health and Bioeconomy at Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, Lisboa 1049-001, Portugal
| | - Rosangela Itri
- Institute of Physics, University of São Paulo, São Paulo 05508-090, Brazil
| |
Collapse
|
17
|
Malekkhaiat Häffner S, Parra-Ortiz E, Skoda MWA, Saerbeck T, Browning KL, Malmsten M. Composition effects on photooxidative membrane destabilization by TiO 2 nanoparticles. J Colloid Interface Sci 2021; 584:19-33. [PMID: 33039680 DOI: 10.1016/j.jcis.2020.09.046] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2020] [Revised: 09/11/2020] [Accepted: 09/12/2020] [Indexed: 11/30/2022]
Abstract
Membrane interactions and photooxidative membrane destabilization of titanium dioxide (TiO2) nanoparticles were investigated, focusing on the effects of membrane composition, notably phospholipid headgroup charge and presence of cholesterol. For this, we employed a battery of state-of-the-art methods for studies of bilayers formed by zwitterionic palmitoyloleoylphosphatidylcholine (POPC) containing also polyunsaturated palmitoylarachidonoylphosphocholine (PAPC), as well as its mixtures with anionic palmitoyloleoylphosphatidylglycerol (POPG) and cholesterol. It was found that the TiO2 nanoparticles display close to zero charge at pH 7.4, resulting in aggregation. At pH 3.4, in contrast, the 6 nm TiO2 nanoparticles are well dispersed due to a strongly positive ζ-potential. Mirroring this pH dependence, TiO2 nanoparticles were observed to bind to negatively charged lipid bilayers at pH 3.4, but much less so at pH 7.4. While nanoparticle binding has some destabilizing effect alone, illumination with ultraviolet (UV) light accentuates membrane destabilization, a result of oxidative stress caused by generated reactive oxygen species (ROS). Neutron reflectivity (NR), quartz crystal microbalance (QCM), and small-angle X-ray scattering (SAXS) results all demonstrate that membrane composition strongly influences membrane interactions and photooxidative destabilization of lipid bilayers. In particular, the presence of anionic POPG makes the bilayers more sensitive to oxidative destabilization, whereas a stabilizing effect was observed in the presence of cholesterol. Also, structural aspects of peroxidation were found to depend strongly on membrane composition, notably the presence of anionic phospholipids. The results show that membrane interactions and UV-induced ROS generation act in concert and need to be considered together to understand effects of lipid membrane composition on UV-triggered oxidative destabilization by TiO2 nanoparticles, e.g., in the context of oxidative damage of bacteria and cells.
Collapse
Affiliation(s)
| | - E Parra-Ortiz
- Department of Pharmacy, University of Copenhagen, DK-2100 Copenhagen, Denmark
| | - M W A Skoda
- ISIS Pulsed Neutron and Muon Source, Rutherford Appleton Laboratory, Harwell, Oxfordshire OX11 OQX, UK
| | - T Saerbeck
- Institut Laue-Langevin, CS 20156, 38042 Grenoble Cedex 9, France
| | - K L Browning
- Department of Pharmacy, University of Copenhagen, DK-2100 Copenhagen, Denmark
| | - M Malmsten
- Department of Pharmacy, University of Copenhagen, DK-2100 Copenhagen, Denmark; Department of Physical Chemistry 1, University of Lund, SE-22100 Lund, Sweden
| |
Collapse
|
18
|
Páez-Pérez M, López-Duarte I, Vyšniauskas A, Brooks NJ, Kuimova MK. Imaging non-classical mechanical responses of lipid membranes using molecular rotors. Chem Sci 2020; 12:2604-2613. [PMID: 34164028 PMCID: PMC8179291 DOI: 10.1039/d0sc05874b] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Lipid packing in cellular membranes has a direct effect on membrane tension and microviscosity, and plays a central role in cellular adaptation, homeostasis and disease. According to conventional mechanical descriptions, viscosity and tension are directly interconnected, with increased tension leading to decreased membrane microviscosity. However, the intricate molecular interactions that combine to build the structure and function of a cell membrane suggest a more complex relationship between these parameters. In this work, a viscosity-sensitive fluorophore (‘molecular rotor’) is used to map changes in microviscosity in model membranes under conditions of osmotic stress. Our results suggest that the relationship between membrane tension and microviscosity is strongly influenced by the bilayer's lipid composition. In particular, we show that the effects of increasing tension are minimised for membranes that exhibit liquid disordered (Ld) – liquid ordered (Lo) phase coexistence; while, surprisingly, membranes in pure gel and Lo phases exhibit a negative compressibility behaviour, i.e. they soften upon compression. Viscosity-sensitive molecular rotors demonstrate that the non-classical mechanical behaviour of model lipid membranes is able to buffer external stress.![]()
Collapse
Affiliation(s)
- Miguel Páez-Pérez
- MSRH, Department of Chemistry, Imperial College London Wood Lane London W12 0BZ UK
| | - Ismael López-Duarte
- MSRH, Department of Chemistry, Imperial College London Wood Lane London W12 0BZ UK .,Departamento de Química Orgánica, Universidad Autónoma de Madrid Cantoblanco 28049 Madrid Spain
| | - Aurimas Vyšniauskas
- MSRH, Department of Chemistry, Imperial College London Wood Lane London W12 0BZ UK .,Center of Physical Sciences and Technology Saulėtekio av. 3 Vilnius Lithuania
| | - Nicholas J Brooks
- MSRH, Department of Chemistry, Imperial College London Wood Lane London W12 0BZ UK
| | - Marina K Kuimova
- MSRH, Department of Chemistry, Imperial College London Wood Lane London W12 0BZ UK
| |
Collapse
|
19
|
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.
Collapse
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
| |
Collapse
|
20
|
Polita A, Toliautas S, Žvirblis R, Vyšniauskas A. The effect of solvent polarity and macromolecular crowding on the viscosity sensitivity of a molecular rotor BODIPY-C10. Phys Chem Chem Phys 2020; 22:8296-8303. [DOI: 10.1039/c9cp06865a] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Viscosity is the key parameter of many biological systems such as live cells. It can be conveniently measured with ‘molecular rotors’ – fluorescent sensors of microviscosity. Here, we investigate one of the most applied molecular rotors BODIPY-C10.
Collapse
Affiliation(s)
- Artūras Polita
- Center of Physical Sciences and Technology
- Vilnius
- Lithuania
| | - Stepas Toliautas
- Institute of Chemical Physics
- Faculty of Physics
- Vilnius University
- 10222 Vilnius
- Lithuania
| | - Rokas Žvirblis
- Center of Physical Sciences and Technology
- Vilnius
- Lithuania
| | | |
Collapse
|
21
|
Kubánková M, Summers PA, López-Duarte I, Kiryushko D, Kuimova MK. Microscopic Viscosity of Neuronal Plasma Membranes Measured Using Fluorescent Molecular Rotors: Effects of Oxidative Stress and Neuroprotection. ACS APPLIED MATERIALS & INTERFACES 2019; 11:36307-36315. [PMID: 31513373 DOI: 10.1021/acsami.9b10426] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Molecular mobility in neuronal plasma membranes is a crucial factor in brain function. Microscopic viscosity is an important parameter that determines molecular mobility. This study presents the first direct measurement of the microviscosity of plasma membranes of live neurons. Microviscosity maps were obtained using fluorescence lifetime imaging of environment-sensing dyes termed "molecular rotors". Neurons were investigated both in the basal state and following common neurodegenerative stimuli, excitotoxicity, or oxidative stress. Both types of neurotoxic challenges induced microviscosity decrease in cultured neurons, and oxidant-induced membrane fluidification was counteracted by the wide-spectrum neuroprotectant, the H3 peptide. These results provide new insights into molecular mobility in neuronal membranes, paramount for basic brain function, and suggest that preservation of membrane stability may be an important aspect of neuroprotection in brain insults and neurodegenerative disorders.
Collapse
Affiliation(s)
| | | | | | - Darya Kiryushko
- Centre for Neuroinflammation and Neurodegeneration , Imperial College London , Hammersmith Hospital Campus, Burlington Danes Building, 160 Du Cane Road , London W12 0NN , U.K
| | | |
Collapse
|
22
|
Nakanishi W, Saito S, Sakamoto N, Kashiwagi A, Yamaguchi S, Sakai H, Ariga K. Monitoring Fluorescence Response of Amphiphilic Flapping Molecules in Compressed Monolayers at the Air-Water Interface. Chem Asian J 2019; 14:2869-2876. [PMID: 31290274 DOI: 10.1002/asia.201900769] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2019] [Revised: 07/05/2019] [Indexed: 11/07/2022]
Abstract
The air-water interface, which is the boundary of two phases with a large difference in polarity, gives a distinct environment compared with bulk water or air. Since the interface provides a field for various biomolecules to work, it is important to understand the molecular behaviors at the interface. Here, polarity-independent flapping viscosity probes (FLAP) equipped with hydrophobic/hydrophilic substituents have been synthesized and studied at the air-water interface. In situ fluorescence (FL), which is related to the internal motion and orientation, of three different FLAPs were investigated at the interface, and the internal motion of the molecule was indicated to be suppressed at the interface. In addition, the molecular response was compared with that of conventional viscosity probes (molecular rotors), which indicates the different behaviors of FLAP probably due to the distinct molecular orientation as well as molecular motion.
Collapse
Affiliation(s)
- Waka Nakanishi
- World Premier International (WPI) Centre for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, 305-0044, Japan.,Research Center for Functional Materials, National Institute for Materials Science (NIMS), 1-2-1 Sengen, Tsukuba, 305-0047, Japan
| | - Shohei Saito
- Department of Chemistry, Graduate School of Science, Kyoto University Kitashirakawa Oiwake, Sakyo, Kyoto, 606-8502, Japan.,Japan Science and Technology Agency (JST), PRESTO Kitashirakawa Oiwake, Sakyo, Kyoto, 606-8502, Japan
| | - Naoki Sakamoto
- World Premier International (WPI) Centre for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, 305-0044, Japan.,Department of Pure and Applied Chemistry, Tokyo University of Science, 2641 Yamazaki, Noda, 278-8510, Japan
| | - Akihiro Kashiwagi
- Department of Chemistry, Graduate School of Science, Nagoya University, Furo, Chikusa, Nagoya, 464-8602, Japan
| | - Shigehiro Yamaguchi
- Department of Chemistry, Graduate School of Science, Nagoya University, Furo, Chikusa, Nagoya, 464-8602, Japan
| | - Hideki Sakai
- Department of Pure and Applied Chemistry, Tokyo University of Science, 2641 Yamazaki, Noda, 278-8510, Japan
| | - Katsuhiko Ariga
- World Premier International (WPI) Centre for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, 305-0044, Japan.,Department of Advanced Materials Science, Graduate School of Frontier Sciences, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba, 277-8561, Japan
| |
Collapse
|
23
|
Toliautas S, Dodonova J, Žvirblis A, Čiplys I, Polita A, Devižis A, Tumkevičius S, Šulskus J, Vyšniauskas A. Enhancing the Viscosity-Sensitive Range of a BODIPY Molecular Rotor by Two Orders of Magnitude. Chemistry 2019; 25:10342-10349. [PMID: 30998263 DOI: 10.1002/chem.201901315] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2019] [Indexed: 11/10/2022]
Abstract
Molecular rotors are a class of fluorophores that enable convenient imaging of viscosity inside microscopic samples such as lipid vesicles or live cells. Currently, rotor compounds containing a boron-dipyrromethene (BODIPY) group are among the most promising viscosity probes. In this work, it is reported that by adding heavy-electron-withdrawing -NO2 groups, the viscosity-sensitive range of a BODIPY probe is drastically expanded from 5-1500 cP to 0.5-50 000 cP. The improved range makes it, to our knowledge, the first hydrophobic molecular rotor applicable not only at moderate viscosities but also for viscosity measurements in highly viscous samples. Furthermore, the photophysical mechanism of the BODIPY molecular rotors under study has been determined by performing quantum chemical calculations and transient absorption experiments. This mechanism demonstrates how BODIPY molecular rotors work in general, why the -NO2 group causes such an improvement, and why BODIPY molecular rotors suffer from undesirable sensitivity to temperature. Overall, besides reporting a viscosity probe with remarkable properties, the results obtained expand the general understanding of molecular rotors and show a way to use the knowledge of their molecular action mechanism for augmenting their viscosity-sensing properties.
Collapse
Affiliation(s)
- Stepas Toliautas
- Institute of Chemical Physics, Faculty of Physics, Vilnius University, Saulėtekio av. 9-III, 10222, Vilnius, Lithuania
| | - Jelena Dodonova
- Institute of Chemistry, Faculty of Chemistry and Geosciences, Vilnius University, Naugarduko str. 24, 03225, Vilnius, Lithuania
| | - Audrius Žvirblis
- Center of Physical Sciences and Technology, Saulėtekio av. 3, Vilnius, 10257, Lithuania
| | - Ignas Čiplys
- Center of Physical Sciences and Technology, Saulėtekio av. 3, Vilnius, 10257, Lithuania
| | - Artūras Polita
- Center of Physical Sciences and Technology, Saulėtekio av. 3, Vilnius, 10257, Lithuania
| | - Andrius Devižis
- Center of Physical Sciences and Technology, Saulėtekio av. 3, Vilnius, 10257, Lithuania
| | - Sigitas Tumkevičius
- Institute of Chemistry, Faculty of Chemistry and Geosciences, Vilnius University, Naugarduko str. 24, 03225, Vilnius, Lithuania
| | - Juozas Šulskus
- Institute of Chemical Physics, Faculty of Physics, Vilnius University, Saulėtekio av. 9-III, 10222, Vilnius, Lithuania
| | - Aurimas Vyšniauskas
- Center of Physical Sciences and Technology, Saulėtekio av. 3, Vilnius, 10257, Lithuania
| |
Collapse
|
24
|
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.
Collapse
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
| |
Collapse
|
25
|
Bour A, Kruglik SG, Chabanon M, Rangamani P, Puff N, Bonneau S. Lipid Unsaturation Properties Govern the Sensitivity of Membranes to Photoinduced Oxidative Stress. Biophys J 2019; 116:910-920. [PMID: 30777304 DOI: 10.1016/j.bpj.2019.01.033] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2018] [Revised: 01/28/2019] [Accepted: 01/29/2019] [Indexed: 12/11/2022] Open
Abstract
Unsaturated lipid oxidation is a fundamental process involved in different aspects of cellular bioenergetics; dysregulation of lipid oxidation is often associated with cell aging and death. To study how lipid oxidation affects membrane biophysics, we used a chlorin photosensitizer to oxidize vesicles of various lipid compositions and degrees of unsaturation in a controlled manner. We observed different shape transitions that can be interpreted as an increase in the area of the targeted membrane followed by a decrease. These area modifications induced by the chemical modification of the membrane upon oxidation were followed in situ by Raman tweezers microspectroscopy. We found that the membrane area increase corresponds to the lipids' peroxidation and is initiated by the delocalization of the targeted double bonds in the tails of the lipids. The subsequent decrease of membrane area can be explained by the formation of cleaved secondary products. As a result of these area changes, we observe vesicle permeabilization after a time lag that is characterized in relation with the level of unsaturation. The evolution of photosensitized vesicle radius was measured and yields an estimation of the mechanical changes of the membrane over oxidation time. The membrane is both weakened and permeabilized by the oxidation. Interestingly, the effect of unsaturation level on the dynamics of vesicles undergoing photooxidation is not trivial and thus carefully discussed. Our findings shed light on the fundamental dynamic mechanisms underlying the oxidation of lipid membranes and highlight the role of unsaturations on their physical and chemical properties.
Collapse
Affiliation(s)
- Aurélien Bour
- Sorbonne Université, Faculté des Sciences et Ingénierie, CNRS, Laboratoire Jean Perrin, Paris, France
| | - Sergei G Kruglik
- Sorbonne Université, Faculté des Sciences et Ingénierie, CNRS, Laboratoire Jean Perrin, Paris, France
| | - Morgan Chabanon
- Department of Mechanical and Aerospace Engineering, University of California San Diego, La Jolla, California
| | - Padmini Rangamani
- Department of Mechanical and Aerospace Engineering, University of California San Diego, La Jolla, California
| | - Nicolas Puff
- Sorbonne Université, Faculté des Sciences et Ingénierie, UFR 925, Paris, France; University Paris Diderot, Sorbonne Paris Cité, CNRS, Laboratoire Matière et Systèmes Complexes, UMR 7057, Paris, France
| | - Stephanie Bonneau
- Sorbonne Université, Faculté des Sciences et Ingénierie, CNRS, Laboratoire Jean Perrin, Paris, France.
| |
Collapse
|
26
|
Beguin E, Bau L, Shrivastava S, Stride E. Comparing Strategies for Magnetic Functionalization of Microbubbles. ACS APPLIED MATERIALS & INTERFACES 2019; 11:1829-1840. [PMID: 30574777 DOI: 10.1021/acsami.8b18418] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
The advancement of ultrasound-mediated therapy has stimulated the development of drug-loaded microbubble agents that can be targeted to a region of interest through an applied magnetic field prior to ultrasound activation. However, the need to incorporate therapeutic molecules while optimizing the responsiveness to both magnetic and acoustic fields and maintaining adequate stability poses a considerable challenge for microbubble synthesis. The aim of this study was to evaluate three different methods for incorporating iron oxide nanoparticles (IONPs) into phospholipid-coated microbubbles using (1) hydrophobic IONPs within an oil layer below the microbubble shell, (2) phospholipid-stabilized IONPs within the shell, or (3) hydrophilic IONPs noncovalently bound to the surface of the microbubble. All microbubbles exhibited similar acoustic response at both 1 and 7 MHz. The half-life of the microbubbles was more than doubled by the addition of IONPs by using both surface and phospholipid-mediated loading methods, provided the lipid used to coat the IONPs was the same as that constituting the microbubble shell. The highest loading of IONPs per microbubble was also achieved with the surface loading method, and these microbubbles were the most responsive to an applied magnetic field, showing a 3-fold increase in the number of retained microbubbles compared to other groups. For the purpose of drug delivery, surface loading of IONPs could restrict the attachment of hydrophilic drugs to the microbubble shell, but hydrophobic drugs could still be incorporated. In contrast, although the incorporation of phospholipid IONPs produced more weakly magnetic microbubbles, it would not interfere with hydrophilic drug loading on the surface of the microbubble.
Collapse
Affiliation(s)
- Estelle Beguin
- Department of Engineering Science, Institute of Biomedical Engineering , University of Oxford , Oxford OX3 7DQ , U.K
| | - Luca Bau
- Department of Engineering Science, Institute of Biomedical Engineering , University of Oxford , Oxford OX3 7DQ , U.K
| | - Shamit Shrivastava
- Department of Engineering Science, Institute of Biomedical Engineering , University of Oxford , Oxford OX3 7DQ , U.K
| | - Eleanor Stride
- Department of Engineering Science, Institute of Biomedical Engineering , University of Oxford , Oxford OX3 7DQ , U.K
| |
Collapse
|
27
|
Vyšniauskas A, Kuimova MK. A twisted tale: measuring viscosity and temperature of microenvironments using molecular rotors. INT REV PHYS CHEM 2018. [DOI: 10.1080/0144235x.2018.1510461] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Aurimas Vyšniauskas
- Center of Physical Sciences and Technology, Vilnius, Lithuania
- Chemistry Department, Vilnius University, Vilnius, Lithuania
| | | |
Collapse
|
28
|
Lee SC, Heo J, Woo HC, Lee JA, Seo YH, Lee CL, Kim S, Kwon OP. Fluorescent Molecular Rotors for Viscosity Sensors. Chemistry 2018; 24:13706-13718. [DOI: 10.1002/chem.201801389] [Citation(s) in RCA: 123] [Impact Index Per Article: 20.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2018] [Revised: 04/25/2018] [Indexed: 11/11/2022]
Affiliation(s)
- Seung-Chul Lee
- Department of Molecular Science and Technology; Ajou University; Suwon 443-749 Republic of Korea
| | - Jeongyun Heo
- Center for Theragnosis; Korea Institute of Science and Technology (KIST); 39-1 Hawolgok-dong Seongbuk-gu Seoul 136-791 Korea
| | - Hee Chul Woo
- Advanced Photonics Research Institute (APRI); Gwangju Institute of Science and Technology (GIST); Gwangju 61005 Republic of Korea
| | - Ji-Ah Lee
- Department of Molecular Science and Technology; Ajou University; Suwon 443-749 Republic of Korea
| | - Young Hun Seo
- Center for Theragnosis; Korea Institute of Science and Technology (KIST); 39-1 Hawolgok-dong Seongbuk-gu Seoul 136-791 Korea
| | - Chang-Lyoul Lee
- Advanced Photonics Research Institute (APRI); Gwangju Institute of Science and Technology (GIST); Gwangju 61005 Republic of Korea
| | - Sehoon Kim
- Center for Theragnosis; Korea Institute of Science and Technology (KIST); 39-1 Hawolgok-dong Seongbuk-gu Seoul 136-791 Korea
- Division of Bio-Medical Science & Technology; KIST School; Korea University of Science and Technology (UST); Seoul 02792 Korea
- KU-KIST Graduate School of Converging Science and Technology; Korea University; 145 Anam-ro Seongbuk-gu Seoul 02841 Korea
| | - O-Pil Kwon
- Department of Molecular Science and Technology; Ajou University; Suwon 443-749 Republic of Korea
| |
Collapse
|
29
|
Vyšniauskas A, Lopez-Duarte I, Thompson AJ, Bull JA, Kuimova MK. Surface functionalisation with viscosity-sensitive BODIPY molecular rotor. Methods Appl Fluoresc 2018; 6:034001. [PMID: 29611817 DOI: 10.1088/2050-6120/aabb2c] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Surface functionalisation with viscosity sensitive dyes termed 'molecular rotors' can potentially open up new opportunities in sensing, for example for non-invasive biological viscosity imaging, in studying the effect of shear stress on lipid membranes and in cells, and in imaging contacts between surfaces upon applied pressure. We have functionalised microscope slides with BODIPY-based molecular rotor capable of viscosity sensing via its fluorescence lifetime. We have optimised functionalisation conditions and prepared the slides with the BODIPY rotor attached directly to the surface of glass slides and through polymer linkers of 5 kDa and 40 kDa in mass. The slides were characterised for their sensitivity to viscosity, and used to measure viscosity of supported lipid bilayers during photooxidation, and of giant unilamellar vesicles lying on the surface of the slide. We conclude that our functionalised slides show promise for a variety of viscosity sensing applications.
Collapse
|
30
|
Lee SC, Lee CL, Heo J, Jeong CU, Lee GH, Kim S, Yoon W, Yun H, Park SO, Kwak SK, Park SH, Kwon OP. Molecular Viscosity Sensors with Two Rotators for Optimizing the Fluorescence Intensity-Contrast Trade-Off. Chemistry 2017; 24:2888-2897. [DOI: 10.1002/chem.201704036] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2017] [Indexed: 11/07/2022]
Affiliation(s)
- Seung-Chul Lee
- Department of Molecular Science and Technology; Ajou University; Suwon 443-749 Republic of Korea
| | - Chang-Lyoul Lee
- Advanced Photonics Research Institute (APRI); Gwangju Institute of Science and Technology (GIST); 123 Cheomdangwagi-ro, Buk-gu Gwangju 61005 Republic of Korea
| | - Jeongyun Heo
- Center for Theragnosis; Korea Institute of Science and Technology (KIST); 39-1 Hawolgok-dong, Seongbuk-gu Seoul 136-791 Republic of Korea
| | - Chan-Uk Jeong
- Department of Molecular Science and Technology; Ajou University; Suwon 443-749 Republic of Korea
| | - Gyeong-Hui Lee
- Department of Molecular Science and Technology; Ajou University; Suwon 443-749 Republic of Korea
| | - Sehoon Kim
- Center for Theragnosis; Korea Institute of Science and Technology (KIST); 39-1 Hawolgok-dong, Seongbuk-gu Seoul 136-791 Republic of Korea
| | - Woojin Yoon
- Department of Chemistry & Department of Energy Systems Research; Ajou University; Suwon 443-749 Republic of Korea
| | - Hoseop Yun
- Department of Chemistry & Department of Energy Systems Research; Ajou University; Suwon 443-749 Republic of Korea
| | - Sung O. Park
- School of Energy and Chemical Engineering; Ulsan National Institute of Science and Technology; 50 UNIST-gil Ulsan 44919 Republic of Korea
| | - Sang Kyu Kwak
- School of Energy and Chemical Engineering; Ulsan National Institute of Science and Technology; 50 UNIST-gil Ulsan 44919 Republic of Korea
| | - Sung-Ha Park
- Department of Applied Chemistry and Biological Engineering; Ajou University; Suwon 443-749 Republic of Korea
| | - O-Pil Kwon
- Department of Molecular Science and Technology; Ajou University; Suwon 443-749 Republic of Korea
| |
Collapse
|
31
|
Ghosh R, Kushwaha A, Das D. Conformational Control of Ultrafast Molecular Rotor Property: Tuning Viscosity Sensing Efficiency by Twist Angle Variation. J Phys Chem B 2017; 121:8786-8794. [DOI: 10.1021/acs.jpcb.7b05947] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Rajib Ghosh
- Radiation
and Photochemistry Division, Bhabha Atomic Research Centre, Mumbai 400085, India
| | - Archana Kushwaha
- Department
of Chemistry, Institute of Chemical Technology, Nathalal Parekh Marg, Matunga, Mumbai 400019, India
| | - Dipanwita Das
- Department
of Chemistry, Institute of Chemical Technology, Nathalal Parekh Marg, Matunga, Mumbai 400019, India
| |
Collapse
|
32
|
Shimolina LE, Izquierdo MA, López-Duarte I, Bull JA, Shirmanova MV, Klapshina LG, Zagaynova EV, Kuimova MK. Imaging tumor microscopic viscosity in vivo using molecular rotors. Sci Rep 2017; 7:41097. [PMID: 28134273 PMCID: PMC5278387 DOI: 10.1038/srep41097] [Citation(s) in RCA: 62] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2016] [Accepted: 12/12/2016] [Indexed: 01/02/2023] Open
Abstract
The microscopic viscosity plays an essential role in cellular biophysics by controlling the rates of diffusion and bimolecular reactions within the cell interior. While several approaches have emerged that have allowed the measurement of viscosity and diffusion on a single cell level in vitro, the in vivo viscosity monitoring has not yet been realized. Here we report the use of fluorescent molecular rotors in combination with Fluorescence Lifetime Imaging Microscopy (FLIM) to image microscopic viscosity in vivo, both on a single cell level and in connecting tissues of subcutaneous tumors in mice. We find that viscosities recorded from single tumor cells in vivo correlate well with the in vitro values from the same cancer cell line. Importantly, our new method allows both imaging and dynamic monitoring of viscosity changes in real time in live animals and thus it is particularly suitable for diagnostics and monitoring of the progress of treatments that might be accompanied by changes in microscopic viscosity.
Collapse
Affiliation(s)
- Lyubov’ E. Shimolina
- Institute of Biomedical Technologies, Nizhny Novgorod State Medical Academy, Minin and Pozharsky Square, 10/1, Nizhny Novgorod, 603005, Russia
- Institute of Biology and Biomedicine, Nizhny Novgorod State University, Gagarin Avenue, 23, Nizhny Novgorod, 603950, Russia
| | | | - Ismael López-Duarte
- Department of Chemistry, Imperial College London, South Kensington, London SW7 2AZ, UK
| | - James A. Bull
- Department of Chemistry, Imperial College London, South Kensington, London SW7 2AZ, UK
| | - Marina V. Shirmanova
- Institute of Biomedical Technologies, Nizhny Novgorod State Medical Academy, Minin and Pozharsky Square, 10/1, Nizhny Novgorod, 603005, Russia
| | - Larisa G. Klapshina
- Razuvaev Institute of Organometallic Chemistry RAS, Tropinina Street, 49, Nizhny Novgorod, 603950, Russia
| | - Elena V. Zagaynova
- Institute of Biomedical Technologies, Nizhny Novgorod State Medical Academy, Minin and Pozharsky Square, 10/1, Nizhny Novgorod, 603005, Russia
| | - Marina K. Kuimova
- Department of Chemistry, Imperial College London, South Kensington, London SW7 2AZ, UK
| |
Collapse
|
33
|
Live Cell Imaging of Viscosity in 3D Tumour Cell Models. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2017; 1035:143-153. [PMID: 29080136 DOI: 10.1007/978-3-319-67358-5_10] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Abnormal levels of viscosity in tissues and cells are known to be associated with disease and malfunction. While methods to measure bulk macroscopic viscosity of bio-tissues are well developed, imaging viscosity at the microscopic scale remains a challenge, especially in vivo. Molecular rotors are small synthetic viscosity-sensitive fluorophores in which fluorescence parameters are strongly correlated to the microviscosity of their immediate environment. Hence, molecular rotors represent a promising instrument for mapping of viscosity in living cells and tissues at the microscopic level. Quantitative measurements of viscosity can be achieved by recording time-resolved fluorescence decays of molecular rotor using fluorescence lifetime imaging microscopy (FLIM), which is also suitable for dynamic viscosity mapping, both in cellulo and in vivo. Among tools of experimental oncology, 3D tumour cultures, or spheroids, are considered a more adequate in vitro model compared to a cellular monolayer, and represent a less labour-intensive and more unified approach compared to animal tumour models. This chapter describes a methodology for microviscosity imaging in tumour spheroids using BODIPY-based molecular rotors and two photon-excited FLIM.
Collapse
|
34
|
Kamiya K, Takeuchi S. Giant liposome formation toward the synthesis of well-defined artificial cells. J Mater Chem B 2017; 5:5911-5923. [DOI: 10.1039/c7tb01322a] [Citation(s) in RCA: 50] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
This review focuses on microfluidic technologies for giant liposome formations which emulate environments of biological cells.
Collapse
Affiliation(s)
- Koki Kamiya
- Artificial Cell Membrane Systems Group
- Kanagawa Institute of Industrial Science and Technology
- Kawasaki
- Japan
| | - Shoji Takeuchi
- Artificial Cell Membrane Systems Group
- Kanagawa Institute of Industrial Science and Technology
- Kawasaki
- Japan
- Institute of Industrial Science
| |
Collapse
|
35
|
Vyšniauskas A, Qurashi M, Kuimova MK. A Molecular Rotor that Measures Dynamic Changes of Lipid Bilayer Viscosity Caused by Oxidative Stress. Chemistry 2016; 22:13210-7. [PMID: 27487026 PMCID: PMC5096028 DOI: 10.1002/chem.201601925] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2016] [Indexed: 11/23/2022]
Abstract
Oxidation of cellular structures is typically an undesirable process that can be a hallmark of certain diseases. On the other hand, photooxidation is a necessary step of photodynamic therapy (PDT), a cancer treatment causing cell death upon light irradiation. Here, the effect of photooxidation on the microscopic viscosity of model lipid bilayers constructed of 1,2-dioleoyl-sn-glycero-3-phosphocholine has been studied. A molecular rotor has been employed that displays a viscosity-dependent fluorescence lifetime as a quantitative probe of the bilayer's viscosity. Thus, spatially-resolved viscosity maps of lipid photooxidation in giant unilamellar vesicles (GUVs) were obtained, testing the effect of the positioning of the oxidant relative to the rotor in the bilayer. It was found that PDT has a strong impact on viscoelastic properties of lipid bilayers, which 'travels' through the bilayer to areas that have not been irradiated directly. A dramatic difference in viscoelastic properties of oxidized GUVs by Type I (electron transfer) and Type II (singlet oxygen-based) photosensitisers was also detected.
Collapse
Affiliation(s)
- Aurimas Vyšniauskas
- Chemistry Department, Imperial College London, Exhibition Road, London, SW7 2AZ, UK
| | - Maryam Qurashi
- Chemistry Department, Imperial College London, Exhibition Road, London, SW7 2AZ, UK
| | - Marina K Kuimova
- Chemistry Department, Imperial College London, Exhibition Road, London, SW7 2AZ, UK.
| |
Collapse
|