HSP110 aggravates ischemia-reperfusion injury after liver transplantation by promoting NF-KB pathwayOA

Background:Ischemia-reperfusion injury(IRI)poses a significant challenge to liver transplantation(LT).The underlying mechanism primarily involves overactivation of the immune system.Heat shock protein 110(HSP110)functions as a molecular chaperone that helps stabilize protein structures. Methods:An IRI model was established by performing LT on Sprague-Dawley rats,and HSP110 was silenced using siRNA.Hematoxylin-eosin staining,TUNEL,immunohistochemistry,ELISA and liver en-zyme analysis were performed to assess IRI following LT.Western blotting and quantitative reverse transcription-polymerase chain reaction were conducted to investigate the pertinent molecular changes. Results:Our findings revealed a significant increase in the expression of HSP110 at both the mRNA and protein levels in the rat liver following LT(P＜0.05).However,when rats were injected with siRNA-HSP110,IRI subsequent to LT was notably reduced(P＜0.05).Additionally,the levels of liver enzymes and inflammatory chemokines in rat serum were significantly reduced(P＜0.05).Silencing HSP110 with siRNA resulted in a marked decrease in M1-type polarization of Kupffer cells in the liver and downregu-lated the NF-κB pathway in the liver(P＜0.05). Conclusions:HSP110 in the liver promotes IRI after LT in rats by activating the NF-κB pathway and in-ducing M1-type polarization of Kupffer cells.Targeting HSP110 to prevent IRI after LT may represent a promising new approach for the treatment of LT-associated IRI.