The intracellular accumulation of abnormal proteins exceeding their degradation can cause imbalance in proteostasis resulting in proteotoxic stress that leads to severe pathological stages. This state relates to proteasome saturation/ insufficiency which requires upregulation of proteasome subunits.
Nuclear Factor Erythroid 2-related factor 1 (NRF1) is a transcription factor (encoded by NFE2L1) which activates proteasome gene re-synthesis upon impairment of the proteasome function. Therefore, targeted activation of the NRF1 pathway could represent a new approach to delay the onset neurodegenerative diseases and other disorders with disturbed proteostasis.