Xiaozhen He, Ruiling Liu, Tingting Fan, Xiaowen Huang, Chunlei Wu, Wu Su, Ting Wang and Qingguo Ruan J Immunol April 15, 2020, 204 (8) 2053-2063; DOI: https://doi.org/10.4049/jimmunol.1901215 Key Points Polyamide targeting IL-23 specifically inhibits the expression of IL-23. Polyamide targeting IL-23 is effective in treating psoriasis and EAU in mice. Abstract Autoimmune diseases are a physiological state that immune responses are directed against and damage the body’s own tissues.