title: Immunomodulatory activity of protein-bound polysaccharide extracted from Chelidonium majus.
abstract: In the course of searching immunomodulators from natural sources, the protein-bound polysaccharide, CM-Ala, has been isolated from the water extract of Chelidonium majus L. (Papaveraceae). The immunostimulatory characteristics have been investigated in several experiments such as generation of activated killer (AK) cells, proliferation of splenocytes, activation of macrophages and granulocyte macrophage-colony forming cell (GM-CFC) assay. Of the fractions obtained using Sephacryl S200 column chromatography, CM-Ala was the most effective fraction that augmented the cytotoxicity against Yac-1 tumor cells from 0.88% to 34.18% by culturing with splenocytes for 5 days. CM-Ala also enhanced nitric oxide production by two fold in peritoneal macrophages and exhibited antitumor activity. It showed mitogenic activity on both spleen cells and bone marrow cells. CM-Ala induced proliferation of splenocytes by 84 fold and increased GM-CFC numbers by 1.48 fold over than the non-treated. On the contrary, CM-Ala had cytotoxic activity to a diverse group of tumor cells. From the above results, we proposed that CM-Ala has a possibility of an effective antitumor immunostimulator.
authors: Laboratory of Immunology, Korea Cancer Center Hospital KAERI, Seoul.
authors: Jie-Young
authors: JY
authors: Song
authors: Hyun-Ok
authors: HO
authors: Yang
authors: Suhk-Neung
authors: SN
authors: Pyo
authors: In-Sung
authors: IS
authors: Jung
authors: Seh-Yoon
authors: SY
authors: Yi
authors: Yeon-Sook
authors: YS
authors: Yun
mesh_terms: D000276:Adjuvants, Immunologic / Q000494:pharmacology*; D000818:Animals; D000972:Antineoplastic Agents, Phytogenic / Q000494:pharmacology; D028281:Chelidonium / Q000737:chemistry*; D003602:Cytotoxicity, Immunologic / Q000187:drug effects; D005260:Female; D006412:Hematopoietic Stem Cells / Q000187:drug effects; D007694:Killer Cells, Natural / Q000187:drug effects; D008213:Lymphocyte Activation / Q000187:drug effects; D008264:Macrophages / Q000187:drug effects / Q000276:immunology; D008297:Male; D051379:Mice; D008807:Mice, Inbred BALB C; D008809:Mice, Inbred C3H; D010936:Plant Extracts / Q000494:pharmacology*; D011134:Polysaccharides / Q000302:isolation & purification / Q000494:pharmacology*
chemical_list: D000276:Adjuvants, Immunologic; D000972:Antineoplastic Agents, Phytogenic; D010936:Plant Extracts; D011134:Polysaccharides