“Redox Imaging” to Distinguish Cells with Different Proliferative Indexes: Superoxide, Hydroperoxides, and Their Ratio as Potential Biomarkers
Joint Authors
Higashi, Tatsuya
Bakalova, Rumiana
Zhelev, Zhivko
Aoki, Ichio
Georgieva, Ekaterina
Lazarova, Dessislava
Semkova, Severina
Gulubova, Maya
Source
Oxidative Medicine and Cellular Longevity
Issue
Vol. 2019, Issue 2019 (31 Dec. 2019), pp.1-18, 18 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2019-04-08
Country of Publication
Egypt
No. of Pages
18
Main Subjects
Abstract EN
The present study was directed to the development of EPR methodology for distinguishing cells with different proliferative activities, using “redox imaging.” Three nitroxide radicals were used as redox sensors: (a) mito-TEMPO—cell-penetrating and localized mainly in the mitochondria; (b) methoxy-TEMPO—cell-penetrating and randomly distributed between the cytoplasm and the intracellular organelles; and (c) carboxy-PROXYL—nonpenetrating in living cells and evenly distributed in the extracellular environment.
The experiments were conducted on eleven cell lines with different proliferative activities and oxidative capacities, confirmed by conventional analytical tests.
The data suggest that cancer cells and noncancer cells are characterized by a completely different redox status.
This can be analyzed by EPR spectroscopy using mito-TEMPO and methoxy-TEMPO, but not carboxy-PROXYL.
The correlation analysis shows that the EPR signal intensity of mito-TEMPO in cell suspensions is closely related to the superoxide level.
The described methodology allows the detection of overproduction of superoxide in living cells and their identification based on the intracellular redox status.
The experimental data provide evidences about the role of superoxide and hydroperoxides in cell proliferation and malignancy.
American Psychological Association (APA)
Zhelev, Zhivko& Georgieva, Ekaterina& Lazarova, Dessislava& Semkova, Severina& Aoki, Ichio& Gulubova, Maya…[et al.]. 2019. “Redox Imaging” to Distinguish Cells with Different Proliferative Indexes: Superoxide, Hydroperoxides, and Their Ratio as Potential Biomarkers. Oxidative Medicine and Cellular Longevity،Vol. 2019, no. 2019, pp.1-18.
https://search.emarefa.net/detail/BIM-1204576
Modern Language Association (MLA)
Zhelev, Zhivko…[et al.]. “Redox Imaging” to Distinguish Cells with Different Proliferative Indexes: Superoxide, Hydroperoxides, and Their Ratio as Potential Biomarkers. Oxidative Medicine and Cellular Longevity No. 2019 (2019), pp.1-18.
https://search.emarefa.net/detail/BIM-1204576
American Medical Association (AMA)
Zhelev, Zhivko& Georgieva, Ekaterina& Lazarova, Dessislava& Semkova, Severina& Aoki, Ichio& Gulubova, Maya…[et al.]. “Redox Imaging” to Distinguish Cells with Different Proliferative Indexes: Superoxide, Hydroperoxides, and Their Ratio as Potential Biomarkers. Oxidative Medicine and Cellular Longevity. 2019. Vol. 2019, no. 2019, pp.1-18.
https://search.emarefa.net/detail/BIM-1204576
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1204576