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Formosanin-C, an immunomodulator with antitumor activity.

Abstract
Paris formosana Hayata (Liliaceae) grown in the mountain areas of Taiwan, has been used as a folk remedy for snake bite, and as an anti-inflammatory or anti-neoplastic agent. The effects of formosanin-C, a diosgenin saponin isolated from Paris formosana, on immune responses and transplantable murine tumor were studied. In culture systems, formosanin-C (0.03-0.16 microM) displayed significant enhancement of the blastogenic response of human peripheral blood cells to phytohemagglutinin. Formosanin-C also significantly increased the 3H-thymidine incorporation of ConA-stimulated lymphocytes at concentrations of 0.1 and 0.01 microM. The responsiveness of the granulocyte/macrophage colony-forming cells (GM-CFC) to mouse fibroblast cells L929 conditioned medium was altered in the presence of 0.01 and 0.001 microM of formosanin-C. In addition, formosanin-C given intraperitoneally activated natural killer cell activity at doses of 1-2.5 mg/kg. An intraperitoneal injection of 2.5 mg/kg of formosanin-C markedly induced interferon production, the peak blood level of which was observed 24 h after formosanin-C injection. Growth of subcutaneously transplanted MH134 mouse hepatoma was retarded by intraperitoneal treatment with 1-2.5 mg/kg of formosanin-C. The activity of 5-fluorouracil against MH-134 mouse hepatoma was potentiated by intraperitoneal treatment with formosanin-C. These results suggest that formosanin-C might display antitumor activity in association with modification of the immune system.
AuthorsR T Wu, H C Chiang, W C Fu, K Y Chien, Y M Chung, L Y Horng
JournalInternational journal of immunopharmacology (Int J Immunopharmacol) Vol. 12 Issue 7 Pg. 777-86 ( 1990) ISSN: 0192-0561 [Print] England
PMID2292459 (Publication Type: Journal Article, Research Support, Non-U.S. Gov't)
Chemical References
  • Adjuvants, Immunologic
  • Antineoplastic Agents, Phytogenic
  • Interferon Inducers
  • Saponins
  • formosanin C
  • Granulocyte-Macrophage Colony-Stimulating Factor
  • Diosgenin
Topics
  • Adjuvants, Immunologic
  • Animals
  • Antineoplastic Agents, Phytogenic
  • Diosgenin (analogs & derivatives)
  • Granulocyte-Macrophage Colony-Stimulating Factor (biosynthesis)
  • Interferon Inducers
  • Killer Cells, Natural (drug effects)
  • Liver Neoplasms, Experimental (drug therapy)
  • Lymphocyte Activation (drug effects)
  • Male
  • Mice
  • Mice, Inbred C3H
  • Plants, Medicinal
  • Saponins (pharmacology)

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