Zinc finger protein SNAI2 (SNAI2) (SNAI2)

Zinc finger protein SNAI2, commonly referred to as Slug, is a member of the Snail family of transcription factors and a master regulator of the epithelial-mesenchymal transition (EMT) [PMID: 25236394]. It functions primarily as a transcriptional repressor by binding to E-box motifs in the promoters of target genes, most notably CDH1, which encodes E-cadherin [UniProt: O43623]. By suppressing E-cadherin, SNAI2 promotes the loss of cell-cell adhesion and gains in motility, which are essential for neural crest migration during development and for wound healing in adults [NCBI Gene: 6591]. In the context of pathology, SNAI2 is frequently upregulated in various malignancies, including melanoma, breast cancer, and lung cancer, where it drives metastasis and confers resistance to chemotherapy and radiation [PMID: 30105223]. Mutations in the SNAI2 gene are also associated with developmental disorders such as Waardenburg syndrome type 2D and piebaldism, highlighting its role in melanocyte biology [PMID: 12145752]. Because transcription factors like SNAI2 lack a traditional ligand-binding pocket, they are considered difficult targets for small-molecule drugs, leading researchers to focus on targeting SNAI2 mRNA [PMID: 28651081]. Therapeutic strategies involving antisense oligonucleotides (ASOs) and small interfering RNAs (siRNAs) are being explored to degrade SNAI2 mRNA and inhibit its pro-tumorigenic functions [PMID: 21602828]. These RNA-targeted approaches aim to reverse the EMT phenotype, thereby reducing the invasive potential of cancer cells and enhancing their sensitivity to standard-of-care treatments.

Other names

SlugSLUGHSLUGH2Protein snail homolog 2Neural crest transcription factor Slug

Inhibition of mRNA translation or induction of mRNA degradation via RNA interference (RNAi) or antisense oligonucleotide (ASO) mechanisms [PMID: 28651081].