| 19538942 |
Wang ZL, Wu XH, Song LF, Wang YS, Hu XH, Luo YF, Chen ZZ, Ke J, Peng XD, He CM, Zhang W, Chen LJ, Wei YQ: Phosphoinositide 3-kinase gamma inhibitor ameliorates concanavalin A-induced hepatic injury in mice. Biochem Biophys Res Commun. 2009 Sep 4;386(4):569-74. Epub 2009 Jun 16.
A pivotal role of phosphoinositide 3-kinase-gamma (PI3Kgamma) in inflammatory cell activation and recruitment makes it an attractive target for immunomodulatory therapy. In present study we investigated the therapeutic efficiency of AS605240, a selective PI3Kgamma inhibitor, on hepatitis and liver fibrosis in murine models induced by concanavalin A (ConA). Orally administration of AS605240 significantly improved survival, decreased the serum levels of alanine aminotransaminase (ALT), prevented inflammatory infiltration to liver in ConA-induced hepatitis. TNF-alpha and IFN-gamma at protein levels in serum and mRNA levels in liver were markedly reduced. Downregulated phospho-Akt level of inflammatory cells infiltrating the liver by AS605240 treatment was detected by immunohistochemistry analysis in liver and further confirmed by Western blotting analysis in splenocytes. In ConA-induced chronic liver fibrosis model, accumulation of smooth-muscle actin (SMA)-expressing cells was partially inhibited by AS605240 treatment. These observations suggest that AS605240 might be of therapeutic value for the treatment of ConA-induced hepatic injury. |
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