The invention discloses a new application of the antitumor effect of a Miao ethnomedicine
psammosilene tunicoids, and simultaneously discloses a preparation method and preparation of the pharmaceutical part of
psammosilene tunicoids with the
antitumor activity. The preparation method mainly comprises the steps of: extracting by
ethanol, concentrating, extracting by n-butyl
alcohol, purifying by macroporous absorption resin, and the like to obtain the total saponins of
psammosilene tunicoids (TSPT). The total saponins are used as raw materials to prepare clinical commonly used pharmaceutical preparations such as tablets, capsules, injections and the like. A method of pharmacodynamic evaluation both
in vivo and
in vitro is adopted, wherein shown by
in vitro tests, the TSPT has stronger inhibitory actions on 6
tumor cells of
stomach cancer,
liver cancer, colon
cancer,
ovarian cancer,
breast cancer and
melanoma, but has unobvious inhibition on the normal
splenic lymphocyte; shown by integral animal
in vivo experimental results, the TSPT has an inhibition rate as high as 72% on S180
solid tumors and has high action valence, but has small influence on the
body weight of mice; and compared with a positive
drug cis-
platinum, the TSPT has lower
side effect. Shown by the experimental results, the TSPT has strong anticancer valence, low
side effect and the
advantage of original innovation.