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Related Experiment Videos

Antineoplastic agents, 162. Zephyranthes candida.

G R Pettit1, G M Cragg, S B Singh

  • 1Cancer Research Institute, Arizona State University, Tempe 85287-1604.

Journal of Natural Products
|January 1, 1990
PubMed
Summary

Zephyranthes candida, a Chinese medicinal plant, contains a potent cytostatic compound. This agent, trans-dihydronarciclasine, shows significant activity against lymphocytic leukemia in bioassays.

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Area of Science:

  • Pharmacognosy
  • Natural Product Chemistry
  • Cancer Research

Background:

  • Traditional Chinese medicine utilizes various plant species for therapeutic purposes.
  • Zephyranthes candida is a known medicinal plant with a history of use.
  • The search for novel anticancer agents from natural sources is ongoing.

Purpose of the Study:

  • To identify and isolate cytostatic constituents from Zephyranthes candida.
  • To evaluate the anticancer potential of compounds derived from this plant.
  • To characterize the principal cytostatic agent responsible for observed activity.

Main Methods:

  • Extraction of Zephyranthes candida using n-butanol (n-BuOH).
  • Bioassay-guided fractionation using P-388 lymphocytic leukemia model.

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  • Isolation and structural elucidation of the active compound.

    • Main Results:

    • A significant cytostatic constituent was isolated from the n-BuOH extract.
    • The principal cytostatic agent was identified as trans-dihydronarciclasine.
    • Trans-dihydronarciclasine exhibited potent activity with an ED50 of 3.2 x 10(-3) µg/ml against P-388 leukemia.

    Conclusions:

    • Trans-dihydronarciclasine is the primary cytostatic compound in Zephyranthes candida.
    • This compound demonstrates promising preclinical activity against lymphocytic leukemia.
    • Zephyranthes candida represents a potential source for novel anticancer drug discovery.