The effects of cyclic hydroxamic acids (CHAs) derived from glycine and D,L-alanine on the enzymatic activity of Ca2+,Mg2+-ATPase from sarcoplasmic reticulum (Ca2+,Mg2+-ATPase SR) and cyclic guanosine monophosphate phosphodiesterase (PDEcGMP) were investigated. CHAs I (C5H10N2O2), II (C6H12N2O2), III (C8H15N3O2), IV (C9H17N3O2), V (C11H21N3O2), and VI (C12H23N3O2) were modulators of Ca2+,Mg2+-ATPase SR enzyme activity. Compounds I-VI decoupled to various extents the hydrolytic and transport functions of Ca2+,Mg2+-ATPase SR, disrupting the ratio of intra- and extracellular Ca2+ ions. This affected the adhesion of metastatic cells to capillary endothelium. Compounds IV and VI had the highest metastasis inhibition indices (MII%) for B-16 melanoma of 33 and 81%, respectively. This correlated with a decreased Ca2+ transmembrane transfer coefficient into SR vesicles of 0.75 for IV and 0.5 for VI compared with a [Ca2+]/[ATP] ratio in the control of 1.4. CHAs I-VI did not affect the functioning of PDEcGMP. The results enabled potential antimetastatic drugs in the CHA series to be predicted.
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Translated from Khimiko-Farmatsevticheskii Zhurnal, Vol. 47, No. 5, pp. 3 – 6, May, 2013.
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Tat’yanenko, L.V., Konovalova, N.P., Dobrokhotova, O.V. et al. Effect of Cyclic Hydroxamic Acids Derived from Glycine and D,L-Alanine on Activity of Ca2+, Mg2+-ATPase Hydrolases of Sarcoplasmic Reticulum and Cyclic Guanosine Monophosphate Phosphodiesterase. Pharm Chem J 47, 235–238 (2013). https://doi.org/10.1007/s11094-013-0935-0
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DOI: https://doi.org/10.1007/s11094-013-0935-0