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Belashov AV, Zhikhoreva AA, Salova AV, Belyaeva TN, Litvinov IK, Kornilova ES, Semenova IV, Vasyutinskii OS. Automatic segmentation of lysosomes and analysis of intracellular pH with Radachlorin photosensitizer and FLIM. Biochem Biophys Res Commun 2024; 710:149835. [PMID: 38574457 DOI: 10.1016/j.bbrc.2024.149835] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2024] [Revised: 03/17/2024] [Accepted: 03/25/2024] [Indexed: 04/06/2024]
Abstract
We report application of the fluorescence lifetime imaging microscopy (FLIM) for analysis of distributions of intracellular acidity using a chlorin-e6 based photosensitizer Radachlorin. An almost two-fold increase of the photosensitizer fluorescence lifetime in alkaline microenvironments as compared to acidic ones allowed for clear distinguishing between acidic and alkaline intracellular structures. Clusterization of a phasor plot calculated from fits of the FLIM raw data by two Gaussian distributions provided accurate automatic segmentation of lysosomes featuring acidic contents. The approach was validated in colocalization experiments with LysoTracker fluorescence in living cells of four established lines. The dependence of photosensitizer fluorescence lifetime on microenvironment acidity allowed for estimation of pH inside the cells, except for the nuclei, where photosensitizer does not penetrate. The developed method is promising for combined application of the photosensitizer for both photodynamic treatment and diagnostics.
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Affiliation(s)
- A V Belashov
- Ioffe Institute, Russian Academy of Sciences, 26, Polytekhnicheskaya, St.Petersburg, 194021, Russia
| | - A A Zhikhoreva
- Ioffe Institute, Russian Academy of Sciences, 26, Polytekhnicheskaya, St.Petersburg, 194021, Russia
| | - A V Salova
- Institute of Cytology, Russian Academy of Sciences, Tikhoretsky Pr., 4, St. Petersburg, 194064, Russia
| | - T N Belyaeva
- Institute of Cytology, Russian Academy of Sciences, Tikhoretsky Pr., 4, St. Petersburg, 194064, Russia
| | - I K Litvinov
- Institute of Cytology, Russian Academy of Sciences, Tikhoretsky Pr., 4, St. Petersburg, 194064, Russia
| | - E S Kornilova
- Institute of Cytology, Russian Academy of Sciences, Tikhoretsky Pr., 4, St. Petersburg, 194064, Russia
| | - I V Semenova
- Ioffe Institute, Russian Academy of Sciences, 26, Polytekhnicheskaya, St.Petersburg, 194021, Russia.
| | - O S Vasyutinskii
- Ioffe Institute, Russian Academy of Sciences, 26, Polytekhnicheskaya, St.Petersburg, 194021, Russia
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Belashov AV, Zhikhoreva AA, Belyaeva TN, Kornilova ES, Salova AV, Semenova IV, Vasyutinskii OS. In vitro monitoring of photoinduced necrosis in HeLa cells using digital holographic microscopy and machine learning. J Opt Soc Am A Opt Image Sci Vis 2020; 37:346-352. [PMID: 32118916 DOI: 10.1364/josaa.382135] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2019] [Accepted: 01/03/2020] [Indexed: 06/10/2023]
Abstract
Digital holographic microscopy supplemented with the developed cell segmentation and machine learning and classification algorithms is implemented for quantitative description of the dynamics of cellular necrosis induced by photodynamic treatment in vitro. It is demonstrated that the developed algorithms operating with a set of optical, morphological, and physiological parameters of cells, obtained from their phase images, can be used for automatic distinction between live and necrotic cells. The developed classifier provides high accuracy of about 95.5% and allows for calculation of survival rates in the course of cell death.
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Belashov AV, Zhikhoreva AA, Belyaeva TN, Nikolsky NN, Semenova IV, Kornilova ES, Vasyutinskii OS. Quantitative assessment of changes in cellular morphology at photodynamic treatment in vitro by means of digital holographic microscopy. Biomed Opt Express 2019; 10:4975-4986. [PMID: 31646023 PMCID: PMC6788599 DOI: 10.1364/boe.10.004975] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/04/2019] [Revised: 08/15/2019] [Accepted: 08/29/2019] [Indexed: 05/03/2023]
Abstract
Temporal dependence of changes in the morphological characteristics of cells of two cultured lines of cancer origin, HeLa and A549, induced by photodynamic treatment with Radachlorin photosensitizer, have been monitored using digital holographic microscopy during first two hours after short-term irradiation. The observed post-treatment early dynamics of the phase shift in the transmitted wavefront indicated several distinct scenarios of cell behavior depending upon the irradiation dose. In particular the phase shift increased at low doses, which can be associated with apoptosis, while at high doses it decreased, which can be associated with necrosis. As shown, the two cell types responded differently to similar irradiation doses. Although the sequence of death scenarios with the increase of the irradiation dose was the same, each scenario was realized at substantially different doses. These findings suggest that the average phase shift of the transmitted wavefront can be used for quantitative non-invasive cell death characterization. The conclusions made were cofirmed by commonly used test assays using confocal fluorescent microscopy.
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Affiliation(s)
- A. V. Belashov
- Ioffe Institute; 26, Polytekhnicheskaya, St. Petersburg, 194021, Russia
| | - A. A. Zhikhoreva
- Ioffe Institute; 26, Polytekhnicheskaya, St. Petersburg, 194021, Russia
| | - T. N. Belyaeva
- Institute of Cytology of RAS; 4, Tikhoretsky pr., St. Petersburg, 194064, Russia
| | - N. N. Nikolsky
- Institute of Cytology of RAS; 4, Tikhoretsky pr., St. Petersburg, 194064, Russia
| | - I. V. Semenova
- Ioffe Institute; 26, Polytekhnicheskaya, St. Petersburg, 194021, Russia
| | - E. S. Kornilova
- Institute of Cytology of RAS; 4, Tikhoretsky pr., St. Petersburg, 194064, Russia
- Peter the Great St. Petersburg Polytechnic University, 29 Polytekhnicheskaya, St. Petersburg, 195251, Russia
- St. Petersburg State University, 7/9, University Embankment, St. Petersburg, 199034, Russia
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Belashov AV, Zhikhoreva AA, Belyaeva TN, Kornilova ES, Petrov NV, Salova AV, Semenova IV, Vasyutinskii OS. Digital holographic microscopy in label-free analysis of cultured cells' response to photodynamic treatment. Opt Lett 2016; 41:5035-5038. [PMID: 27805679 DOI: 10.1364/ol.41.005035] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
A methodology providing noninvasive monitoring and evaluation of the effect of photodynamic treatment on live cells in vitro is presented. Variations in morphological characteristics of cells in the course and after treatment are recorded by means of digital holographic microscopy. High-precision measurements of phase shift gained by probe radiation in HeLa and human endometrial mesenchymal stem cell cultures demonstrate for the first time changes of their volume occurred in response to treatment.
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Salova AV, Leontieva EA, Mozhenok TP, Kornilova ES, Krolenko SA, Belyaeva TN. Changes in localization of cellular vesicular apparatus during differentiation of myoblasts into myotubules in cell culture. ACTA ACUST UNITED AC 2011. [DOI: 10.1134/s1990519x11030096] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Gagieva SC, Tautieva MA, Alikhanov VF, Galimov YB, Chigorina TM, Belyaeva TN. Synthesis of rhenium(V) solvation complexes with cysteine (Cys) and methionine (Met). RUSS J GEN CHEM+ 2011. [DOI: 10.1134/s1070363208010271] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Belyaeva TN, Krolenko SA, Leontieva EA, Mozhenok TP, Salova AV, Faddeeva MD. Acridine orange distribution and fluorescence spectra in myoblasts and single muscle fibers. ACTA ACUST UNITED AC 2009. [DOI: 10.1134/s1990519x09020096] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Gagieva SC, Tautieva MA, Tsaloev AT, Galimov YB, Gagieva LC, Belyaeva TN. Rhenium(V) complexes with sulfur-containing amino acids. RUSS J INORG CHEM+ 2007. [DOI: 10.1134/s0036023607110150] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Krolenko SA, Adamyan SY, Belyaeva TN, Mozhenok TP, Salova AV. Confocal microscopy study of membrane organelles of the skeletal muscle fiber in the process of Zenker’s (spreading) necrosis. ACTA ACUST UNITED AC 2007. [DOI: 10.1134/s1990519x07020101] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Belyaeva TN, Sokolovskya EL, Fadeeva MD. Effect of the antitumor agent cis-Pt(NH3)2Cl2 and its isomer trans-Pt(NH3)2Cl2 on latent ATPase activity of isolated rat liver mitochondria and on membrane-bound Na+,K+-ATPase activity of bovine cerebral cortex. Bull Exp Biol Med 1982. [DOI: 10.1007/bf00833307] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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