Nuclear factor erythroid 2-related factor 2 and Peroxisome proliferator-activated receptor gamma coactivator 1-alpha (NRF2-PGC-1α) signaling network (NRF2-PGC-1α network)

The mitochondrial biogenesis and antioxidant transcriptional network is a coordinated cellular response system primarily regulated by the NRF2-PGC-1α axis (Cherry et al., 2014; PMID: 24411246). This network integrates the production of new mitochondria with the upregulation of antioxidant defenses to maintain cellular energy levels while minimizing oxidative damage (UniProt Q9UBK2, Q16236). Peroxisome proliferator-activated receptor gamma coactivator 1-alpha (PGC-1α) acts as the master regulator of mitochondrial biogenesis, while Nuclear factor erythroid 2-related factor 2 (NRF2) controls the expression of protective antioxidant genes (PubMed: 26073731). Dysregulation of this network is implicated in the pathogenesis of neurodegenerative diseases, chronic kidney disease, and metabolic disorders, where mitochondrial decay and oxidative stress are prominent (PubMed: 31601540). Therapeutic strategies focus on activating this network using small molecules like NRF2 activators (e.g., Bardoxolone methyl, Omaveloxolone) or upstream modulators like SIRT1 activators to restore mitochondrial function and cytoprotection (FDA Skyclarys Label). However, therapeutic development must balance the benefits of cellular protection with risks such as cardiovascular toxicity and the potential for promoting the survival of malignant cells (PubMed: 23131018).

Other names

Mitochondrial biogenesis and antioxidant transcriptional networkNRF2-PGC-1α axisPGC-1α/NRF2 signaling pathwayMitochondrial-antioxidant regulatory network

Activation of the network involves the stabilization of NRF2 and the induction of PGC-1α, leading to the coordinated transcription of genes for mitochondrial DNA replication, electron transport chain components, and antioxidant enzymes such as superoxide dismutase and heme oxygenase-1.