title: SGP-2, an acidic polysaccharide from Sarcandra glabra, inhibits proliferation and migration of human osteosarcoma cells.
abstract: An acidic polysaccharide (SGP-2), with a molecular weight of 1880 kDa, was purified from the defatted whole-plant of Sarcandra glabra (Thunb.) Nakai. SGP-2 is mainly composed of glucose, galactose, mannose, arabinose and galacturonic acid in a molar ratio of 12.19 : 8.68 : 6.03 : 1.00 : 15.24. The primary structure analysis reveals that SGP-2 consists of 1,4-linked α-D-galacturonic acid, methyl-esterified 1,4-linked α-D-galacturonic acid, 1,5-linked α-L-arabinose, 1,4-linked α-D-mannose, 1,6-linked β-D-glucose and 1,3-linked β-D-galactose with branch chains of 1,4,6-linked β-D-glucose, 1,3,6-linked α-D-mannose and 1,4,6-linked α-D-galactose. The results of a cell viability assay and colony formation assay indicate that SGP-2 has a potent anti-proliferation activity on human osteosarcoma MG-63 cells. SGP-2 increases the proportion of apoptotic cells and activates caspase-3. In addition, the anti-proliferation effect induced by SGP-2 is blocked by the pan-caspase inhibitor. Moreover, SGP-2 inhibits the migratory capacity of MG-63 cells accompanied with the inhibition of receptor for advanced glycation end-products (RAGE) and nuclear factor-kappa B (NF-κB). Taken together, these results suggest that SGP-2 has anti-cancer potential in the treatment of human osteosarcoma.
authors: State Key Laboratory of Natural Medicines, PR China. wbyao@cpu.edu.cn xdgao@cpu.edu.cn.
authors: Zhenzhen
authors: Z
authors: Zhang
authors: Wei
authors: W
authors: Liu
authors: Ying
authors: Y
authors: Zheng
authors: Lei
authors: L
authors: Jin
authors: Wenbing
authors: W
authors: Yao
authors: Xiangdong
authors: X
authors: Gao
mesh_terms: D017209:Apoptosis / Q000187:drug effects; D001859:Bone Neoplasms / Q000188:drug therapy / Q000503:physiopathology*; D045744:Cell Line, Tumor; D002465:Cell Movement / Q000187:drug effects; D049109:Cell Proliferation / Q000187:drug effects; D002470:Cell Survival; D006131:Growth Inhibitors / Q000737:chemistry / Q000494:pharmacology*; D006801:Humans; D019684:Magnoliopsida / Q000737:chemistry*; D012516:Osteosarcoma / Q000188:drug therapy / Q000503:physiopathology*; D010936:Plant Extracts / Q000737:chemistry / Q000494:pharmacology*; D011134:Polysaccharides / Q000737:chemistry / Q000494:pharmacology*
chemical_list: D006131:Growth Inhibitors; D010936:Plant Extracts; D011134:Polysaccharides