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Zeaxanthin from Porphyridium purpureum induces apoptosis in human melanoma cells expressing the oncogenic BRAF V600E mutation and sensitizes them to the BRAF inhibitor vemurafenib ArchiMer
Juin, Camille; De Oliveira Junior, Raimundo Gonsalves; Fleury, Audrey; Oudinet, Chloe; Pytowski, Lior; Berard, Jean-baptiste; Nicolau, Elodie; Thiery, Valerie; Lanneluc, Isabelle; Beaugeard, Laureen; Prunier, Gregoire; Guedes Da Silva Almeida, Jackson Roberto; Picot, Laurent.
Zeaxanthin, an abundant carotenoid present in fruits, vegetables and algae was reported to exert antiproliferative activity and induce apoptosis in human uveal melanoma cells. It also inhibited uveal melanoma tumor growth and cell migration in nude mice xenograft models. Here we report that zeaxanthin purified from the rhodophyte Porphyridium purpureum (Bory) K.M.Drew & R.Ross, Porphyridiaceae, promotes apoptosis in the A2058 human melanoma cell line expressing the oncogenic BRAF V600E mutation. Zeaxanthin 40 μM (IC50) induced chromatin condensation, nuclear blebbing, hypodiploidy, accumulation of cells in sub-G1 phase, DNA internucleosomal fragmentation and activation of caspase-3. Western blot analysis revealed that zeaxanthin induced up-regulation...
Tipo: Text Palavras-chave: Cancer; Carotenoid; Melanoma; Microalgae; Phytoplankton; Zeaxanthin.
Ano: 2018 URL: http://archimer.ifremer.fr/doc/00444/55595/57227.pdf
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