id author title date pages extension mime words sentences flesch summary cache txt cord-002165-blbaqbo7 Wu, Dongdong Interferon Regulatory Factor-1 Mediates Alveolar Macrophage Pyroptosis During LPS-Induced Acute Lung Injury in Mice 2016-08-15 .txt text/plain 4744 281 50 title: Interferon Regulatory Factor-1 Mediates Alveolar Macrophage Pyroptosis During LPS-Induced Acute Lung Injury in Mice Previously, we demonstrated that pyroptosis in alveolar macrophages (AMs) plays an essential role in lipopolysaccharide (LPS)-induced acute lung injury. Here, we show that the absence of interferon regulatory factor 1 (IRF-1) in genetic knock-out mice strongly abrogates pyroptosis in AMs and alleviates the LPS-induced lung injury and systemic inflammation. A previous study conducted by our group observed caspase-1 activation in AMs during the development of ALI/ ARDS, and further, that treatment with a specific caspase-1 inhibitor has been shown to reduce LPS-induced lung injury in mice (8) . In the present study, we showed that the absence of IRF-1 in genetic knockout mice strongly alleviates LPS-induced lung injury and abrogates its pyroptotic effects in AMs. These findings suggest that IRF-1 plays a key role in controlling caspase-1-dependent pyroptosis and inflammation, which is, in turn, a TLR4-dependent process. ./cache/cord-002165-blbaqbo7.txt ./txt/cord-002165-blbaqbo7.txt