Forkhead box protein F1 (FOXF1) (FOXF1)

Forkhead box protein F1 (FOXF1) is a transcription factor belonging to the forkhead family, characterized by a conserved winged-helix DNA-binding domain that recognizes specific DNA motifs to regulate gene expression (1.2.4, 1.3.4). It plays a critical role in embryonic development, particularly in the morphogenesis of the lungs, gastrointestinal tract, and cardiovascular system (1.1.4, 1.3.3). FOXF1 is primarily expressed in mesenchymal and endothelial cells, where it regulates genes involved in angiogenesis, cell cycle progression, and mesenchymal-epithelial signaling (1.1.3, 1.2.5). In the context of disease, inactivating mutations in the FOXF1 gene are the primary cause of Alveolar Capillary Dysplasia with Misalignment of Pulmonary Veins (ACDMPV), a fatal neonatal lung disorder (1.2.3, 1.3.1). Furthermore, reduced FOXF1 expression is linked to pulmonary arterial hypertension (PAH) and impaired DNA repair via the Fanconi anemia pathway (1.1.1, 1.1.2). Conversely, FOXF1 acts as a master regulator in gastrointestinal stromal tumors (GIST) and can promote metastasis in colorectal cancer, while its restoration in non-small cell lung cancer (NSCLC) promotes vascular normalization (1.2.1, 1.2.2). Therapeutic strategies currently under investigation include small molecule stabilizers like TanFe and gene therapy approaches to restore FOXF1 function in deficient tissues (1.2.2, 1.2.3).

Other names

FREAC-1FKHL5Forkhead-related activator 1Forkhead-related protein FKHL5Forkhead-related transcription factor 1HNF-3/forkhead homolog 8

Stabilization of FOXF1 protein to restore transcriptional activity; transcriptional activation of target genes such as FZD4, VEGFA, KIT, and ETV1; restoration of the Fanconi anemia (FA) DNA repair pathway and vascular endothelial growth factor (VEGF) signaling.