Fig. 5From: Current knowledge and challenges associated with targeted delivery of neurotrophic factors into the central nervous system: focus on available approachesMANF and CDNF signaling pathways. Both MANF and CDNF regulate cell activity during ER stress and UPR function. MANF initiates PKC signaling and impedes degeneration of Purkinje cells. The MANF/STAT3 and MANF/ERK1/2 adjust the migration and differentiation of cells. The NF-κB signaling is regulated via MANF to control the inflammation. CDNF inhibits JNK in reducing inflammation via downregulation of the PGE2 and IL-1β. Further, CDNF increases the Bcl-2/Bax ratio and reduces apoptosisBack to article page