Journal
CARBOHYDRATE POLYMERS
Volume 152, Issue -, Pages 207-213Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.carbpol.2016.06.112
Keywords
G0/G1 arrest; Apoptosis; CFSE labeling; Structural analysis
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Funding
- UGC-BSR Meritorious Fellowship [GCCO/A-2/UGC-MERITORIOUS/2012/44]
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Fucoidan was purified from seaweed, Turbinaria conoides. Isolated fragments were characterized with NMR (C-13, H-1), Gas Chromatography-Mass Spectronomy (GC-MS) and HPLC analysis. The autohydrolysate of fucoidans consisted of sulfated fuco-oligosaccharides having the backbone of a.-(1, 3)-linked fuco-pyranose derivatives and minor components of galactose, glucose, mannose and xylose sugars. Fucoidan induced a dose-dependent reduction in cell survival of lung cancer A549 cells by MTT assay (GI50, 75 tig/mL). However, it was not cytotoxic to a non-tumorigenic human keratinocyte cell line of skin tissue (HaCaT) (GI50 >1.0 mg/mL). The apoptotic cells in fucoidan-treated A549 cells were visualized by laser confocal microscopy and cell cycle analysis showed induction of GO/G1 phase arrest of the cell progression cycle. Further, CFSE labeling and flow cytometry highlighted that fucoidan significantly (P < 0.05) inhibited the proliferation rate of A549 cells by up to 2-fold compared with the control cells. It is concluded that fucoidan has the potential to act as an anti-proliferative agent on lung carcinoma (A549) cells. (C) 2016 Published by Elsevier Ltd.
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