It is the first time to investigate the relationship between IL-15, MMP-9 and NF-kB pathway in polymyositis.
Anti-IL-15 and IL-15Rα siRNA play protective effects in polymyositis.
ERK1/2 pathway plays important role in IL-15 regulating MMP-9 expression.
IKBα is a important downstream molecule of IL-15/MMP-9 pathway.