Zinc finger protein 677 (ZNF677)

Zinc finger protein 677 (ZNF677) is a member of the KRAB-domain containing C2H2-type zinc finger protein family, acting as a DNA-binding transcription factor involved in regulating gene expression by RNA polymerase II. ZNF677 is commonly expressed in normal tissues, but is frequently downregulated in several cancers due to promoter hypermethylation. Functional studies demonstrate that ZNF677 acts as a tumor suppressor: its overexpression inhibits tumor cell proliferation, invasion, and epithelial-mesenchymal transition (EMT), and induces apoptosis, through inactivation of pathways such as PI3K/AKT and ERK/MAPK. Accordingly, its reduced expression is correlated with more aggressive cancer phenotypes and poorer patient prognosis. ZNF677 has been proposed as a prognostic biomarker in a range of malignancies, and aberrant methylation of its promoter region is being explored for diagnostic and disease monitoring purposes. There are currently no known drugs that specifically bind or target ZNF677; research has focused on its role in cancer biology rather than as a pharmacologically modulated target.

Other names

ZNF677MGC48625hypothetical protein MGC48625

Not applicable (no current drugs known to target ZNF677 directly); restoration of gene expression by demethylating agents demonstrated in vitro (e.g., azacytidine, trichostatin A)