Nuclear factor erythroid 2-like 1 (NFE2L1)

Nuclear factor erythroid 2-like 1 (NFE2L1, often referred to as Nrf1 or TCF11) is a member of the CNC-bZIP family of transcription factors, ubiquitously expressed and essential for regulating cellular homeostasis[1][2][5]. It anchors to the endoplasmic reticulum membrane until stress signals induce its proteolytic processing and nuclear translocation, where it activates genes involved in oxidative stress defense, protein degradation (proteasome subunits), and lipid metabolism[1][3][5]. NFE2L1 maintains cell viability by safeguarding proteostasis and modulating the antioxidant response, supporting functions in development, tissue regeneration, cancer prevention, bone remodeling, and neuroprotection[2][3][5]. Loss of NFE2L1 function results in severe phenotypes, including embryonic lethality and susceptibility to neurodegeneration or liver tumorigenesis in animal models[5]. Unlike membrane-bound receptors or enzymes, NFE2L1 acts in the nucleus as a master regulator of cellular adaptive programs[1][2][3][5].

Other names

Nrf1TCF11NF-E2-related factor 1

Activation of antioxidant response element (ARE)–dependent genes to induce cytoprotective programs; Induction of proteasome subunit genes to restore proteasome activity under stress