Journal
JOURNAL OF MEDICINAL CHEMISTRY
Volume 52, Issue 4, Pages 1100-1114Publisher
AMER CHEMICAL SOC
DOI: 10.1021/jm8013585
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Funding
- Region de Bruxelles-Capitale (Brussels, Belgium)
- Fonds Yvonne Boel (Brussels, Belgium)
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Narciclasine (1) is a plant growth regulator that has been previously demonstrated to be proapoptotic to cancer cells at high concentrations (>= 1 mu M). Data generated in the present study show that narciclasine displays potent antitumor effects in apoptosis-resistant as well as in apoptosis-sensitive cancer cells by impairing the organization of the actin cytoskeleton in cancer cells at concentrations that are not cytotoxic (IC50 values of 30-90 nM). The current study further revealed that any chemical modification to the narciclasine backbone generally led to compounds of variable stability, weaker activity, or even the complete loss of antiproliferative effects in vitro. However, one hemisynthetic derivative of narciclasine, compound 7k, demonstrated by both the intravenous and oral routes higher in vivo antitumor activity in human orthotopic 4, glioma models in mice when compared to narciclasine at nontoxic doses. Narciclasine and compound 7k may therefore be of potential use to combat brain tumors.
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