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Potent Skin Cancer Chemopreventing Activity of Some Novel

Author(s): Hesham Fahmy | Jordan K. Zjawiony | Takao Konoshima | Harukuni Tokuda | Shabana Khan | Sherief Khalifa

Journal: Marine Drugs
ISSN 1660-3397

Volume: 4;
Issue: 2;
Start page: 28;
Date: 2006;
Original page

Keywords: Cancer chemoprevention | Skin cancer | Cembranoids | Sarcophine | Sarcophyton glaucum

Abstract: In the course of our continuing research in development and evaluation of novel skin cancer chemopreventive agents from marine sources, five semi-synthetic cembranoids derived from the marine natural product sarcophine, isolated from the soft coral Sarcophyton glaucum, were synthesized and shown to exhibit a remarkable chemopreventive activity in the in-vitro Epstein Barr Virus Early Antigen (EBV-EA) activation assay. These compounds were assayed in vivo using the two-stage carcinogenesis test of mouse skin tumors induced by 7,12-dimethylbenz[a]anthracene (DMBA) as an initiator, and 12-O-tetradecanoylphorbol-13-acetate (TPA) as a promoter by topical administration. They showed potent inhibition of both percentage incidence of skin tumor as well asthe multiplicity of skin tumors per mouse compared to untreated controls.Semi-synthetic Cembranoids from Marine Sources
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