title: Vitamin E succinate potentiates the inhibitory effect of prostaglandins on oral squamous carcinoma cell proliferation.
abstract: Previous studies have shown that prostaglandin E2 (PGE2) and vitamin E succinate can act in an additive manner to inhibit the proliferation of human oral squamous carcinoma cells (SCC-25). The initial studies on the additive anticancer activity of PGE2 and vitamin E succinate have been extended to include antineoplastic PGs, delta 12-PGJ2 and PGJ2. Treatment of oral squamous carcinoma cells (SCC-15) with delta 12-PGJ2, PGJ2, and vitamin E succinate, individually, caused significant concentration-dependent inhibition of cell proliferation to various degrees. PGJ2 was most potent and caused an inhibition that corresponded to 85.55% at 10(-5) M. Addition of 1 microM of vitamin E succinate to delta 12-PGJ2 or PGJ2 resulted in a significant increase in the inhibitory potency of the lower concentrations of the two PGs. These results suggest a novel role for a mixture of PGs and vitamin E as potent antitumor proliferative agents.
authors.affiliation: Laboratory of Hormone Research, University of Missouri-Kansas City, School of Dentistry 64108.
authors.forename: T M
authors.initials: TM
authors.lastname: elAttar
authors.forename: H S
authors.initials: HS
authors.lastname: Lin
mesh_terms: D000970:Antineoplastic Agents / Q000494:pharmacology*; D002294:Carcinoma, Squamous Cell / Q000473:pathology*; D002455:Cell Division / Q000187:drug effects; D015232:Dinoprostone / Q000008:administration & dosage / Q000494:pharmacology; D004357:Drug Synergism; D006801:Humans; D008297:Male; D008875:Middle Aged; D009062:Mouth Neoplasms / Q000473:pathology*; D015230:Prostaglandin D2 / Q000008:administration & dosage / Q000031:analogs & derivatives / Q000494:pharmacology; D011453:Prostaglandins / Q000008:administration & dosage / Q000494:pharmacology*; D024505:Tocopherols; D014810:Vitamin E / Q000008:administration & dosage / Q000031:analogs & derivatives* / Q000494:pharmacology
chemical_list: D000970:Antineoplastic Agents; D011453:Prostaglandins; D014810:Vitamin E; C037112:9-deoxy-delta-9-prostaglandin D2; C040810:9-deoxy-9,10-didehydro-12,13-didehydro-13,14-dihydroprostaglandin D2; D015232:Dinoprostone; D024505:Tocopherols; D015230:Prostaglandin D2