Abstract
Cationic polymers are positively charged high-molecular compounds that have N-containing functional groups, such as primary, secondary, and tertiary amine groups, quaternary ammonium groups, etc. In this work, we studied the effect of the synthetic polycation poly-2-dimethylaminoethyl methacrylate (PDMAEM) on the biological activity of Chinese hamster fibroblasts and human erythrocytes. Analysis of the effect of the polycation on cell adhesion was carried out using a fibroblast culture. Culture plastic, treated or untreated with polycation, was used as a substrate. Adsorption of the polycation on the polystyrene surface did not lead to a change in the adhesive ability of fibroblasts. Pretreatment of fibroblasts with PDMAEM in low concentrations (0.1 and 1 μg/mL) did not affect the adhesive properties of cells seeded on untreated plastic. At concentrations of 10 and 100 μg/mL, PDMAEM inhibited the attachment of fibroblasts to this substrate. A relationship has been determined between the suppression of cell adhesion under the influence of the polymer and its toxic effect on the viability of fibroblasts. Treatment of human erythrocytes with the polycation at concentrations of 10 and 100 μg/mL resulted in cell damage and release of hemoglobin from erythrocytes. At low doses, the polycation had practically no effect on the processes of hemolysis of erythrocytes. It was shown that PDMAEM caused morphological changes in erythrocytes and their aggregation. The toxic effect of the polycation on human erythrocytes generally coincided with that for animal fibroblasts. Possible cellular targets that may be affected by the studied polycation are discussed.
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The work is supported by the Research Program of the Sechenov Institute of Evolutionary Physiology and Biochemistry, Russian Academy of Sciences, no. 075-00967-23-00.
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V.P. Ivanova: original idea and experimental design, experiments, analysis, and interpretation of the data obtained, writing the manuscript. L.L. Alekseenko: fibroblast cultivation. O.V. Nazarova: chemical synthesis of PDMAEM polycation. I.V. Mindukshev: participation in discussion of the results. All authors read and agreed to the final version of the manuscript.
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Animal-related experiments were conducted in accordance with the NIH Guidelines for the care and use of laboratory animals (http://oacu.od.nih.gov/regs/index.htm). Animal protocols were approved by the Ethics Committee of the Sechenov Institute of Evolutionary Physiology and Biochemistry, Russian Academy of Sciences, protocol no. 1-04 of April 7, 2022. Each participant in the study provided a voluntary written informed consent after receiving an explanation of the potential risks and benefits, as well as the nature of the upcoming study.
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Abbreviations: ECM—extracellular matrix; LDH—lactate dehydrogenase; PDMAEM—poly-2-dimethylaminoethyl methacrylate.
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Ivanova, V.P., Alekseenko, L.L., Nazarova, O.V. et al. The Influence of the Synthetic Polycation Poly-2-Dimethylaminoethyl Methacrylate on the Biological Activity of Resident and Nonresident Cells of Mammals. Cell Tiss. Biol. 18, 89–101 (2024). https://doi.org/10.1134/S1990519X24010024
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DOI: https://doi.org/10.1134/S1990519X24010024