Abstract
Antiangiogenic and antitumor activities of Soamsan known as an anticancer remedy in traditional Korean medicine were examined. In contrast to the normal branching of vascular vessels in chorioallantoic membrane (CAM), blood vessels in CAM treated with Soamsan (50 μg per egg) were run parallel to each other with less branching. Oral administration of Soamsan (20 mg/kg per day) for 4 weeks significantly inhibited the rat corneal neovascularization induced by suture, and the length of blood vessels in Soamsan-treated rat cornea was conspicuously low compared to control. When HT1080 cells, human fibrosarcoma, were treated with 2.18 mg/ml of Soamsan up to 24 h, mRNA transcription of VEGF, TGF-β and bFGF genes was dramatically reduced in a time-dependent manner. Soamsan showed a prolongation of life span and a reduction of tumor volume in CT-26 cell (colon adenocarcinoma)-bearing mice. These results suggest that antitumor activity of Soamsan may be mediated, at least in part, by antiangiogenic mechanism.
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