Dl. Aminin et al., BIOLOGICAL-ACTIVITY OF DISULFATED POLYHYDROXYSTEROIDS FROM THE PACIFIC BRITTLE STAR OPHIOPHOLIS-ACULEATA, Comparative biochemistry and physiology. Part C, Pharmacology toxicology & endocrinology, 112(2), 1995, pp. 201-204
The action of (20R)-cholesta-5,25-diene-3 alpha,4 beta,21-triol 3,21-d
isulfate and its 25,26-dihydro-analog from the Pacific brittle star Op
hiopholis aculeata was studied on mouse cancer cells, lymphocytes and
erythrocytes. The cytotoxic and hemolytic effects were not observed fo
r both steroids at the wide range of concentrations. Both steroids inh
ibited H-3-Thymidine (but not H-3-Uridine) incorporation into Ehrlich
carcinoma cells. It was the first time shown that some sulfated marine
polyhydroxylated steroids stimulate the influx of Ca2+ into cells. (2
0R)-Cholesta-5,25-diene-3 alpha,4 beta,21-triol 3,21-disulfate was two
times more active than its 25,26-dihydro-analog.