Inhibitors for the endoprotease furin are provided for the prevention, diagnosis, treatment, and study of human and animal pathologies, which involve furin activity. These pathologies include infections caused by bacteria and virus that exploit host furin activity. These pathologies also include diseases that involve the expression of host proproteins that are processed by furin as a part of growth, development, and maintenance of the host organism including certain cancers of the head and neck.
US8263563B2
申请人:——
公开号:US8263563B2
公开(公告)日:2012-09-11
.BETA.-Naphthylamides of guanidinophenyl amino acids as substrates of aminopeptidases.
β-Naphthylamides of p-guanidino-L-phenylalanine (GPA) and p-guanidino-DL-phenylglycine (GPG) were synthesized and tested as substrates of bovine leukocyte aminopeptidase (BL-APase) and porcine liver aminopeptidase B (PL-APaseB) in comparison with L-arginine β-naphthylamide (Arg-βNA). BL-APase-catalyzed bydrolysis of GPA-βNA proceeded as fast as that of Arg-βNA, while the rate of hydrolysis of GPG-βNA was much slower. The specificity constant (Vmax/Km) for the hydrolysis of GPA-βNA by BL-APase was somewhat larger than that for the hydrolysis of Arg-βNA. The benzene ring in the side chain of GPA-βNA is considered to contribute to the binding of this substrate to the specificity side to this enzyme, based on comparison of the Km values for the two β-naphthylamide substrates. Substrate inhibition was observed with BL-APase in the hydrolysis of GPA-βNA in the substrate concentration range higher than about 0.1 mM. Neither GPA-βNA nor GPG-βNA was hydrolyzed by PL-APaseB and they inhibited the hydrolysis of Arg-βNA by this enzyme. GPA-βNA is expected to be a useful substrate in the study of the binding and catalytic specificities of aminopeptidases.