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UPLC/MS/MS method for quantification and cytotoxic activity of sesquiterpene lactones isolated from Saussurea lappa
- Kumar, Ashish, Kumar, Shiv, Kumar, Dharmesh, Agnihotri, Vijai K.
- Journal of ethnopharmacology 2014 v.155 no.2 pp. 1393-1397
- Saussurea costus, antineoplastic agents, chloroform, chromatography, cytotoxicity, lung neoplasms, rats, roots, sesquiterpenoid lactones, spectral analysis, sucrose, traditional medicine, China, India, Japan
- Saussurea lappa (Asteraceae) roots have been reputed for the usage in traditional medicinal systems of India, China and Japan for the treatment of various kinds of disorders such as anti-ulcer, anti-convulsant, anti-cancer, hepatoprotective, anti-arthritic and anti-viral activities.Compounds were isolated using a column chromatographic technique. The root extract, fractions and isolated compounds were tested for cytotoxicity against A549 (human lung carcinoma) and C-6 (rat glioma) cells using the Sulphorhodamine B assay. Chromatographic separations of active sesquiterpene lactones were accomplished on BEH-HSS-T3 column at 25°C.Phytochemical investigation of Saussurea lappa root extract resulted in the isolation of isoalantolactone (1), β-cyclocostunolide (2) α-cyclocostunolide (3), 4-hydroxy-3,5-dimethoxycinnamyl-9-O-β-d-glucopyranoside (4), sucrose (5), and alantolactone (6). Their structures were determined by spectroscopic means. Ethanolic extract, chloroform fraction, compounds 1, 2, 3 and 6 possessed significant activity against both tested cells. The quantification was performed using the transitions of m/z 233/105 for isoalantolactone and m/z 233/105 for alantolactone respectively. Costunolide and dehydrocostus lactone were also characterised by comparison of MS/MS fragmentation pattern.This is the first study on simultaneous quantification of isoalantolactone and alantolactone by the UPLC/MS/MS method in Saussurea lappa. Our study against A549 and C-6 cells showed higher cytotoxicity. It is suggested that roots of Saussurea lappa might be a potential source of anticancer compounds.