Chicken ovalbumin upstream promoter-transcription factor II (COUP-TFII)

Chicken ovalbumin upstream promoter-transcription factor II (COUP-TFII), also known as NR2F2, is a member of the orphan nuclear receptor superfamily that functions as a key transcriptional regulator [UniProt P24466, NCBI Gene 7026]. It plays a critical role in embryonic development, particularly in the specification of venous identity by repressing arterial genes, and is essential for heart morphogenesis and the development of the lymphatic system [Nature 2005, Nature 2010]. In adults, COUP-TFII is involved in maintaining metabolic homeostasis, regulating glucose levels, and modulating circadian rhythms [JBC 2007]. Pathologically, it is frequently overexpressed in various malignancies, including prostate and colorectal cancers, where it promotes tumor progression, angiogenesis, and metastasis by modulating the tumor microenvironment and epithelial-mesenchymal transition [Nature Comm 2013, Cancer Res 2015]. While it is considered a high-priority therapeutic target due to its role in cancer and metabolic diseases, the development of specific small-molecule modulators remains a challenge because its natural ligand is not well-defined, though it has shown low-affinity binding to certain retinoids [PLOS Bio 2008].

Other names

NR2F2ARP1COUP-TF2SVP40Apolipoprotein AI regulatory protein 1Nuclear receptor subfamily 2 group F member 2

Transcriptional regulation through binding to direct repeat (DR) elements in DNA, recruitment of corepressors (e.g., NCoR, SMRT) or coactivators, and competitive inhibition of other nuclear receptors like HNF4 or Retinoic Acid Receptors [UniProt P24466, PLOS Bio 2008].