In Vitro and In Silico Analysis of the Anticancer Effects of Eurycomanone and Eurycomalactone from Eurycoma longifolia
PLANTS-BASEL(2023)
摘要
Eurycomanone and eurycomalactone are known quassinoids present in the roots and stems of Eurycoma longifolia. These compounds had been reported to have cytotoxic effects, however, their mechanism of action in a few cancer cell lines have yet to be elucidated. This study was aimed at investigating the anticancer effects and mechanisms of action of eurycomanone and eurycomalactone in cervical (HeLa), colorectal (HT29) and ovarian (A2780) cancer cell lines via Sulforhodamine B assay. Their mechanism of cell death was evaluated based on Hoechst 33342 assay and in silico molecular docking toward DHFR and TNF-alpha as putative protein targets. Eurycomanone and eurycomalactone exhibited in vitro anticancer effects manifesting IC50 values of 4.58 +/- 0.090 mu M and 1.60 +/- 0.12 mu M (HeLa), 1.22 +/- 0.11 mu M and 2.21 +/- 0.049 mu M (HT-29), and 1.37 +/- 0.13 mu M and 2.46 +/- 0.081 mu M (A2780), respectively. They induced apoptotic cancer cell death in dose- and time-dependent manners. Both eurycomanone and eurycomalactone were also predicted to have good inhibitory potential as demonstrated by the docking into TNF-alpha with binding affinity of 8.83 and 7.51 kcal/mol, respectively, as well as into DHFR with binding affinity results of 8.05 and 8.87 kcal/mol, respectively. These results support the evidence of eurycomanone and eurycomalactone as anticancer agents via apoptotic cell death mechanism that could be associated with TNF-ff and DHFR inhibition as among possible protein targets.
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关键词
Eurycoma longifolia,quassinoids,cancer cell lines,apoptosis,TNF-beta,DHFR,molecular docking,ADMET
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