Versatile pharmacological actions of YC-1: anti-platelet to anticancer

Since the first article on YC-1 was published in 1994, it has been popularly used as a pharmacological tool to activate soluble guanylate cyclase and to increase cyclic GMP levels in cultured cells or isolated tissues. In terms of the pharmacological actions of YC-1, previous studies tend to be limited to its inhibition of platelet aggregation and vascular contraction. However, recent studies have demonstrated that YC-1 has versatile pharmacological effects other than the anti-platelet and vasodilatory effects. In particular, two recent reports suggest that YC-1 could be developed as a new class of anticancer agent for rapidly growing solid tumors, because it inhibits hypoxia-inducible factor 1 (HIF-1) activity, and has been reported to halt tumor growth in vivo. We here review the cyclic GMP-dependent and independent pharmacological actions of YC-1, and its anti-HIF-1, anticancer effect. (C) 2004 Elsevier Ireland Ltd. All rights reserved.