Zinc finger protein ZIC 2 (ZIC2) (ZIC2)

Zinc finger protein ZIC 2 (ZIC2) is a member of the ZIC family of C2H2-type zinc finger transcription factors, which are essential for early development, particularly of the central nervous system (UniProt: O95409). It functions by binding to specific DNA sequences to either activate or repress the transcription of target genes involved in cell fate determination and proliferation (NCBI Gene: 7546). In clinical contexts, mutations in the ZIC2 gene are a primary cause of holoprosencephaly type 5, a severe brain malformation characterized by the failure of the forebrain to divide into two hemispheres (PubMed: 11555614). Beyond its developmental role, ZIC2 is frequently upregulated in various malignancies, including hepatocellular carcinoma, pancreatic cancer, and breast cancer (PubMed: 31484145). In these cancers, it promotes tumor growth, epithelial-mesenchymal transition (EMT), and the maintenance of cancer stem cell properties (PubMed: 30233154). While ZIC2 is considered a promising therapeutic target due to its role in oncogenesis, it remains challenging to target directly with small molecules due to the lack of well-defined binding pockets (PubMed: 28633210). Current research efforts focus on indirect inhibition through downstream pathways or the use of nucleic acid-based therapies like siRNA to knockdown its expression (PubMed: 32545678). Consequently, ZIC2 serves as both a critical developmental regulator and a potential biomarker for cancer progression and prognosis.

Other names

Zic family member 2HPE5Zinc finger protein of the cerebellum 2

Transcriptional modulation of target genes involved in development and oncogenesis