申请人:TOKAI UNIVERSITY EDUCATIONAL SYSTEM
公开号:US20200392223A1
公开(公告)日:2020-12-17
A low-molecular-weight compound (IL-17 activity inhibitor) having an IL-17 activity-inhibiting ability. The IL-17RA inhibitor is a compound which can bind to interleukin 17 receptor A (IL-17RA) through a non-covalent interaction including at least one intermolecular interaction selected from the group that includes a van der Waals force acting among at least 13 amino acid residues selected from amino acid residues Phe60, Gln87, Asp121, Pro122, Asp123, Gln124, Asp153, Cys154, Glu155, Lys160, Pro164, Cys16 5, Ser167, Ser168, Gly169, Ser170, Leu171, Trp172, Asp173, Pro174, Pro254, Phe256, Ser258, Cys 259, Asp262, Cys263, Leu264 and His266 contained in, for example, an extracellular domain of human IL-17RA and preferably consists of an ionic bond, a hydrogen bond, a CH-π interaction and a hydrophobic interaction each acting among specified amino acid residues among the above-mentioned amino acid residues in a space surrounded by the above-mentioned amino acid residues, and which has an activity to inhibit the binding of interleukin-17A (IL-17A) to IL-17RA originated from human or the like, or a pharmaceutically acceptable salt, solvate or prodrug of the compound.