RORγt+IL-17+ neutrophils play a critical role in hepatic ischemia-reperfusion injury

• 来源期刊: 分子细胞生物学报（英文版）
• 年，卷（期）: 2013,（2）
• 页码范围: 143-146
• 页数: 4页
• 语种: 英文
• DOI: 10.1093/jmcb/mjs065

摘要

Dear Editor, Hepatic ischemia-reperfusion (I/R) injury is a significant medical emergency occurring upon trauma,hepatic surgery,and hemorrhagic shock which leads to acute liver failure,remote organ damage and may limit both liver transplantation and partial hepatectomy surgery.The release of inflammatory mediators is the consequence of ischemia/hypoxia and reperfusion-mediated hepatic injury.Upon severe I/R injury,endogenous danger signals activate the inflammasome complex recruiting caspase1 cleaving pro-interleukin (IL)-1β into its mature form (Besnard et al.,2012).Upon the IL-1R/Toll-like receptor (TLR) activation and phosphorylation of IκB,NF-κB translocates into the nucleus,and initiates gene expression of IL-23,IL-6,IL-1β,and TGF-β (Llacuna et al.,2009).These mediators together with IL-1β favor the differentiation of IL-17A-producing (Th17) cells expressing IL-23 receptors allowing their expansion by IL-23 produced by innate immune cells (Bettelli et aL,2008).The inflammatory cytokines IL-1 and IL-17A are induced upon organ I/R injury,but their roles in hepatic I/R are elusive.We revisited the role of IL-1 and IL-17A using a model of hepatic I/R injury with 1 h partial ischemia (70％) followed by 6h reperfusion resulting in hepatic damage.