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Description:

IC50: The mean IC50 of about 50 nmol/L calculated on the 6 human glioblastoma multiforme was similar to the value previously reported for 6 carcinoma cell lines and consistent with National Cancer Institute data, which also reveal a mean IC50 value of 47 nmol/L for the compound across a panel of 60 cancer cell lines [1].

Narciclasine is a toxic alkaloid found in various Amaryllidaceae species, modulatting the Rho/ROCK/LIM kinase/cofilin pathway, stimulating RhoA activation and inducing actin polymerization. The cytostatic activity of Narciclasine involves the impairment of actin cytoskeleton organization by targeting GTPases, including RhoA and the elongation factor eEF1A. Thus, Narciclasine is a potentially promising agent for the treatment of primary brain cancers and various brain metastases.

In vitro: In a MM46 cell in-vitro study, authors examined the inhibitory activities of Amaryllidaceae alkaloids, namely, lycoricidinol (narciclasine), hippeastrine and ungerine against the cytotoxicity of calprotectin. It was found that lycoricidinol (narciclasine) inhibited calprotectin-induced cytotoxicity at more than 10-fold lower concentration (IC50=0.001-0.01 μ/ml) than lycorine, while the effects of the latter two alkaloids were very weak [2].

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