serine protease inhibitor WX-671

An orally bioavailable, 3-amidinophenylalanine-derived, second generation serine protease inhibitor prodrug targeting the human urokinase plasminogen activator (uPA) system with potential antineoplastic and antimetastatic activities. After oral administration, serine protease inhibitor WX-671 is converted to the active N-(2,4,6-triisopropylphenylsulfonyl)-3-amidino-(L)-phenyla lanine-4-ethoxycarbonylpiperazide (WX-UK1), which inhibits several serine proteases, particularly uPA; inhibition of uPA may result in the inhibition of tumor growth and metastasis. uPA is a serine protease involved in degradation of the extracellular matrix and tumor cell migration and proliferation. Check for active clinical trials using this agent. (NCI Thesaurus)

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