FN Archimer Export Format PT J TI Antiproliferative Activity of Violaxanthin Isolated from Bioguided Fractionation of Dunaliella tertiolecta Extracts BT AF PASQUET, Virginie MORISSET, Perrine IHAMMOUINE, Said CHEPIED, Amandine AUMAILLEY, Lucie BERARD, Jean-Baptiste SERIVE, Benoit KAAS, Raymond LANNELUC, Isabelle THIERY, Valerie LAFFERRIERE, Mathieu PIOT, Jean-Marie PATRICE, Thierry CADORET, Jean-Paul PICOT, Laurent AS 1:1;2:1;3:1;4:1;5:1;6:2;7:2;8:2;9:1;10:1;11:1;12:1;13:3;14:2;15:1; FF 1:;2:;3:;4:;5:;6:PDG-RBE-BRM-PBA;7:PDG-RBE-BRM-PBA;8:PDG-RBE-BRM-PBA;9:;10:;11:;12:;13:;14:PDG-RBE-BRM-PBA;15:; C1 Univ La Rochelle, UMR CNRS LIENSs 6250, F-17042 La Rochelle, France IFREMER Ctr Nantes, IFREMER Lab PBA, F-44311 Nantes, France CHU Nantes, Dept LASER, F-44093 Nantes, France C2 UNIV LA ROCHELLE, FRANCE IFREMER, FRANCE CHU NANTES, FRANCE SI NANTES SE PDG-RBE-BRM-PBA IN WOS Ifremer jusqu'en 2018 copubli-france copubli-univ-france IF 3.854 TC 73 UR https://archimer.ifremer.fr/doc/00040/15142/12575.pdf LA English DT Article DE ;pigments;microalgae;Dunaliella;violaxanthin;carotenoid;cancer;apoptosis AB Dunaliella tertiolecta (DT) was chemically investigated to isolate molecules inhibiting cancer cell proliferation and inducing apoptosis in vitro. The potency to inhibit cell growth was used for the bio-guided fractionation and isolation of active compounds using chromatographic techniques. The DT dichloromethane extract exhibited a strong anti-proliferative activity on MCF-7 and LNCaP cells, and was further fractionated and sub-fractionated by RP-HPLC. High resolution mass spectrometry and spectrophotometric analysis unequivocally identified violaxanthin as the most antiproliferative molecule present in DT DCM extract. Violaxanthin purified from DT induced MCF-7 dose- dependent growth inhibition in continuous and discontinuous treatments, at concentrations as low as 0.1 mu g.mL(-1) (0.17 mu M). Phosphatidylserine exposure, typical of early apoptosis, was observed after 48 h treatment at 8 mu g.mL(-1) (13.3 mu M) but no DNA fragmentation, characteristic of late apoptosis steps, could be detected even after 72 h treatment at 40 mu g.mL(-1) (66.7 mu M). Taken together, our results demonstrate the strong antiproliferative activity of violaxanthin on one human mammary cancer cell line, and suggest that studying the pharmacology of violaxanthin and pharmacomodulated derivatives on cancer cells may allow potent antiproliferative drugs to be obtained. PY 2011 PD MAY SO Marine Drugs SN 1660-3397 PU Mdpi Ag VL 9 IS 5 UT 000292632500010 BP 819 EP 831 DI 10.3390/md9050819 ID 15142 ER EF