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  • Metalloprotease inhibitor b...
    Saito, Shuichi; Frank, Gerald D; Motley, Evangeline D; Dempsey, Peter J; Utsunomiya, Hirotoshi; Inagami, Tadashi; Eguchi, Satoru

    Biochemical and biophysical research communications, 06/2002, Volume: 294, Issue: 5
    Journal Article

    In vascular smooth muscle cells (VSMCs), angiotensin II (AngII) induces transactivation of the EGF receptor (EGFR) which involves a metalloprotease that stimulates processing of heparin-binding EGF from its precursor. However, the identity and pharmacological sensitivity of the metalloprotease remain unclear. Here, we screened the effects of several metalloprotease inhibitors on AngII-induced EGFR transactivation in VSMCs. We found that an N-phenylsulfonyl-hydroxamic acid derivative {2 R-(4-biphenylsulfonyl)amino- N-hydroxy-3-phenylpropinamide} (BiPS), previously known as matrix metalloprotease (MMP)-2/9 inhibitor, markedly inhibited AngII-induced EGFR transactivation, whereas the MMP-2 or -9 inhibition by other MMP inhibitors failed to block the transactivation. BiPS markedly inhibited AngII-induced ERK activation and protein synthesis without affecting AngII-induced intracellular Ca 2+ elevation. VSMC migration induced by AngII was also inhibited not only by an EGFR inhibitor but also by BiPS. Thus, BiPS is a specific candidate to block AngII-induced EGFR transactivation and subsequent growth and migration of VSMCs, suggesting its potency to prevent vascular remodeling.