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. 2020 May 1;10(5):702. doi: 10.3390/biom10050702

Figure 4.

Figure 4

Representative model of the NRF2 signaling pathway activation in myotonic dystrophy 1 (DM1), based on literature evidences. Brain-derived neurotrophic factor (BDNF) activation of PI3K/AKT pathway determines the inhibitory phosphorylation of GSK3β by blocking NRF2/KEAP-1-indipendent degradation. As BDNF is a NRF2 target, this can start a positive feedback contributing to NRF2 activation. At the same time, the transcription of NRF2 antioxidant target genes reduces oxidative stress in DM1 cells and the pro-inflammatory cytokine IL-1β levels.