We studied the effects of glycyrrhetinic acid (bioactive aglycone of glycyrrhizin) and its ester derivatives at positions C-3 and C-30 on the cell volume regulation in rat thymocytes under conditions of hypoosmotic stress. Native glycyrrhetinic acid completely suppressed this process with half-maximal concentration of 12.7±1.4 μM and Hill coefficient of 3.1±0.6. Formation of esters at C-3 (esters with the acetic, cinnamic and methoxi-cinnamic acid) and at C-30 (methyl ester) drastically decreased the inhibitory activity of the molecule, suggesting that intact hydroxyl group at C-3 and carboxyl group at C-30 are structurally important determinants of biological activity of glycyrrhetinic acid towards volume regulation of thymic lymphocytes.
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Translated from Byulleten’ Eksperimental’noi Biologii i Meditsiny, Vol. 175, No. 1, pp. 34-38, January, 2023
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Rakhimova, M.B., Esanov, R.S., Merzlyak, P.G. et al. Effect of Glycyrrhetic Acid Derivatives on Regulation of Thymocyte Volume. Bull Exp Biol Med 175, 27–31 (2023). https://doi.org/10.1007/s10517-023-05804-3
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DOI: https://doi.org/10.1007/s10517-023-05804-3