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• W3199708590 abstract "Abstract Cardiac glycosides, such as digoxin and digitoxin, are compounds that interact with Na + /K + ‐ATPase to induce anti‐neoplastic effects; however, these cardiac glycosides have narrow therapeutic index. Thus, semi‐synthetic analogs of digitoxin with modifications in the sugar moiety has been shown to be an interesting approach to obtain more selective and more effective analogs than the parent natural product. Therefore, the aim of this study was to assess the cytotoxic potential of novel digitoxigenin derivatives, digitoxigenin‐α‐L‐rhamno‐pyranoside ( 1 ) and digitoxigenin‐α‐L‐amiceto‐pyranoside ( 2 ), in cervical carcinoma cells (HeLa) and human diploid lung fibroblasts (Wi‐26‐VA4). In addition, we studied the anticancer mechanisms of action of these compounds by comparing its cytotoxic effects with the potential to modulate the activity of three P‐type ATPases; Na + /K + ‐ATPase, sarco/endoplasmic reticulum Ca 2+ ‐ATPase (SERCA), and plasma membrane Ca 2+ ‐ATPase (PMCA). Briefly, the results showed that compounds 1 and 2 were more cytotoxic and selectivity for HeLa tumor cells than the nontumor cells Wi‐26‐VA4. While the anticancer cytotoxicity in HeLa cells involves the modulation of Na + /K + ‐ATPase, PMCA and SERCA, the modulation of these P‐type ATPases was completely absent in Wi‐26‐VA4 cells, which suggest the importance of their role in the cytotoxic effect of compounds 1 and 2 in HeLa cells. Furthermore, the compound 2 inhibited directly erythrocyte ghosts PMCA and both compounds were more cytotoxic than digitoxin in HeLa cells. These results provide a better understanding of the mode of action of the synthetic cardiac glycosides and highlights 1 and 2 as potential anticancer agents." @default.
• W3199708590 created "2021-09-27" @default.
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• W3199708590 date "2021-09-22" @default.
• W3199708590 modified "2023-10-17" @default.
• W3199708590 title "Cytotoxic effect of carbohydrate derivatives of digitoxigenin involves modulation of plasma membrane Ca ²⁺ ‐ATPase" @default.
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• W3199708590 doi "https://doi.org/10.1002/jcb.30150" @default.
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