Recombinant adenovirus encoding NLRP3 RNAi attenuate inflammation and brain injury after intracerebral hemorrhage

•ICH activated the NLRP3 inflammasome and inflammation.•NLRP3 RNAi could attenuate inflammation and brain injury after ICH.•NLRP3 RNAi might be valuable as a potential strategy for ICH.

Numerous evidence have shown that microglia mediated inflammation plays a pivotal role in the development of brain injury after intracerebral hemorrhage (ICH). Therefore anti-inflammation therapy represents a potentially promising approach to ICH. Recently, NLRP3 inflammasome was discovered to facilitate the inflammatory response. However, the effect of NLRP3 inflammasome after ICH has not been fully studied. To explore the potential of NLRP3 inflammasome, we detected NLRP3 expression, inflammation, brain edema and neurological functions in vitro and in vivo. We found that ICH activated the NLRP3 inflammasome and inflammation. However, NLRP3 RNAi could attenuate inflammation and brain injury after ICH. Therefore, the findings suggested that recombinant adenovirus encoding NLRP3 RNAi might be valuable as a potential strategy for anti-inflammation therapy in ICH.