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Ermakov A, Popov A, Ermakova O, Ivanova O, Baranchikov A, Kamenskikh K, Shekunova T, Shcherbakov A, Popova N, Ivanov V. The first inorganic mitogens: Cerium oxide and cerium fluoride nanoparticles stimulate planarian regeneration via neoblastic activation. Mater Sci Eng C Mater Biol Appl 2019; 104:109924. [PMID: 31499991 DOI: 10.1016/j.msec.2019.109924] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/06/2019] [Revised: 06/19/2019] [Accepted: 06/26/2019] [Indexed: 10/26/2022]
Abstract
We report the first experimental evidence for the mitogenic action of cerium(IV) oxide and cerium(III) fluoride nanoparticles (CONs and CFNs) on the regeneration of a whole organism - freshwater flatworms Schmidtea mediterranea (planarian). Both types of cerium-containing nanoparticles are shown to be a highly potent mitogen for planaria. Both CONs and CFNs, in micro- and nanomolar concentrations, markedly accelerate planarian blastema growth, due to the enhancement of cellular proliferation, causing an increase in the mitotic index and in the quantity of blastema cells in regenerating planaria. CONs provided maximum activity at concentrations which were two orders of magnitude lower than those for CeF3. The valence state of cerium in cerium-containing nanoparticles plays a significant role in the planarian regeneration mechanism: CeO2 nanoparticles containing predominantly Ce4+ species presumably scavenge wound induced reactive oxygen species and moderately activate gene expression processes, while the regenerative action of CeF3 nanoparticles containing only Ce3+ species is manifested in the pronounced expression of the genes involved in cell division, differentiation and migration. This is the first report on the effect of cerium-containing nanoparticles on tissue regeneration in vivo, further revealing the mechanisms of their biological action, which enhances the possibility of their use in cellular technologies.
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Affiliation(s)
- Artem Ermakov
- Institute of Theoretical and Experimental Biophysics, Russian Academy of Sciences, Pushchino, Moscow Region 142290, Russia
| | - Anton Popov
- Institute of Theoretical and Experimental Biophysics, Russian Academy of Sciences, Pushchino, Moscow Region 142290, Russia
| | - Olga Ermakova
- Institute of Theoretical and Experimental Biophysics, Russian Academy of Sciences, Pushchino, Moscow Region 142290, Russia
| | - Olga Ivanova
- Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Moscow 119991, Russia
| | - Alexander Baranchikov
- Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Moscow 119991, Russia; Lomonosov Moscow State University, Moscow, Russia
| | - Kristina Kamenskikh
- Institute of Theoretical and Experimental Biophysics, Russian Academy of Sciences, Pushchino, Moscow Region 142290, Russia
| | - Taisiya Shekunova
- Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Moscow 119991, Russia; Lomonosov Moscow State University, Moscow, Russia
| | - Alexander Shcherbakov
- Zabolotny Institute of Microbiology and Virology, National Academy of Sciences of Ukraine, Kyiv D0368, Ukraine
| | - Nelli Popova
- Institute of Theoretical and Experimental Biophysics, Russian Academy of Sciences, Pushchino, Moscow Region 142290, Russia
| | - Vladimir Ivanov
- Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Moscow 119991, Russia; Lomonosov Moscow State University, Moscow, Russia.
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Gaziev A, Abdullaev S, Minkabirova G, Kamenskikh K. X-rays and metformin cause increased urinary excretion of cell-free nuclear and mitochondrial DNA in aged rats. J Circ Biomark 2017; 5:1849454416670782. [PMID: 28936265 PMCID: PMC5548319 DOI: 10.1177/1849454416670782] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2016] [Accepted: 09/01/2016] [Indexed: 11/18/2022] Open
Abstract
Activation of cell death in mammals can be assessed by an increase of an amount of cell-free DNA (cf-DNA) in urine or plasma. We investigated the excretion of cf nuclear DNA (nDNA) and cf mitochondrial DNA (mtDNA) in the urine of rats 3 and 24 months in age after X-irradiation and metformin administration. Analyses showed that prior to treatment, the amount of cf-nDNA was 40% higher and cf-mtDNA was 50% higher in the urine of aged rats compared to that of young animals. At 12 h after irradiation, the content of cf-nDNA and cf-mtDNA in the urine of young rats was increased by 200% and 460%, respectively, relative to the control, whereas in the urine of aged rats, it was 250% and 720% higher. After 6 h following metformin administration, the amount of cf-nDNA and cf-mtDNA in the urine of young rats was elevated by 25% and 55% and by 50% and 160% in the urine of aged rats. Thus, these preliminary data suggest that X-rays and metformin cause a significant increase of cf-DNA in the urine of older rats caused by the active cell death in tissues. These results also suggest that metformin possibly initiates the death of the cells containing structural and functional abnormalities.
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Affiliation(s)
- Azhub Gaziev
- Institute of Theoretical and Experimental Biophysics, RAS, Pushino, Moscow Region, Russia
| | - Serazhutdin Abdullaev
- Institute of Theoretical and Experimental Biophysics, RAS, Pushino, Moscow Region, Russia
| | - Gulchachak Minkabirova
- Institute of Theoretical and Experimental Biophysics, RAS, Pushino, Moscow Region, Russia
| | - Kristina Kamenskikh
- Institute of Theoretical and Experimental Biophysics, RAS, Pushino, Moscow Region, Russia
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