Hepatocyte nuclear factor 4 alpha receptor (HNF4A)

Hepatocyte nuclear factor 4 alpha receptor (HNF4A) is a member of the nuclear receptor superfamily functioning primarily as a ligand-regulated transcription factor[1][3][5]. It is essential for the expression of a wide range of genes involved in liver, pancreas, kidney, and intestinal development and metabolic homeostasis, with critical roles in glucose and lipid metabolism, beta-cell maturation, and hepatic function[1][2][3]. HNF4A binds DNA as a homodimer, orchestrating intricate gene regulatory networks, and is allosterically regulated through its binding to fatty acids and interactions with key coactivators (such as PGC-1α)[6][8]. Pathogenic variants in HNF4A are linked to monogenic forms of diabetes (MODY1), increased risk for metabolic and liver diseases, and can impact pharmacogenomic responses by altering drug-metabolizing enzyme expression[4][7]. It is a recognized transcriptional master regulator in liver and intestinal epithelium and is broadly implicated in the pathophysiology of diabetes, cancer, and other disease states[3][9].

Other names

NR2A1MODY1TCF14HNF-4αHepatocyte nuclear factor 4HNF4

Activation or repression of gene transcription via ligand-dependent (fatty acid) and allosteric modulation[3][5][6] Regulation of downstream metabolic gene networks controlling glucose/lipid metabolism