AI Article Synopsis
- Arenobufagin, derived from traditional Chinese medicine Chan'su, shows strong antitumor effects but is hampered by toxicity and a narrow therapeutic range.
- Researchers have successfully designed new 3,11-bispeptide ester derivatives of arenobufagin, based on earlier work with 3-monopeptide esters, to enhance antitumor activity.
- The lead compound, ZM350, demonstrated a significant 58.8% reduction in tumor growth in mice and induced apoptosis while showing minimal side effects on important ion channels, indicating promise for further development in cancer treatment.
Article Abstract
Arenobufagin, one of the bufadienolides isolated from traditional Chinese medicine Chan'su, exhibits potent antitumor activity. However, serious toxicity and small therapeutic window limits its drug development. In the present study, to our knowledge, novel 3,11-bispeptide ester arenobufagin derivatives have been firstly designed and synthesized on the base of our previous discovery of active 3-monopeptide ester derivative. The in vitro antiproliferative activity evaluation revealed that the moiety at C3 and C11 hydroxy had an important influence on cytotoxic activity and selectivity. Compound ZM350 notably inhibited tumor growth by 58.8 % at a dose 10 mg/kg in an A549 nude mice xenograft model. Therefore, compound ZM350 also presented a concentration-dependent apoptosis induction and low inhibitory effect against both hERG potassium channel and Cav1.2 calcium channel. Our study suggests that novel 3,11-bispeptide ester derivatives will be a potential benefit to further antitumor agent development of arenobufagin.
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| http://dx.doi.org/10.1002/cbdv.202200911 | DOI Listing |
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