Increased AKT/mTOR/NF-κB p65 activation and Bcl-6, HIF1, Eomes and T-bet expression in memory CD8+ T cells of XBP1 antigen-specific CTL triggered by ACY241 treatment. XBP1-CTL were evaluated for the effects of ACY241 treatment on the AKT (pS473)/mTOR (pS2448)/NF-κB p65 pathways and the Bcl-6, HIF1, Eomes and T-bet expression. ACY241 treatment enhanced the activation levels of AKT, mTOR and p65, mainly within the memory cell subsets in the XBP1-CTL (Fig. 7a). In addition, ACY241 treatment enhanced the expression of key transcriptional regulators Bcl-6, HIF1, Eomes and T-bet in XBP1-CTL (Fig. 7b), which was detected mainly within memory T cell subset (p <0.05) (Fig. 7c)