Zinc finger protein SNAI1 (Snail) and Zinc finger protein SNAI2 (Slug) (SNAIL/SLUG)

Snail (SNAI1) and Slug (SNAI2) are closely related zinc finger transcription factors that orchestrate the epithelial-to-mesenchymal transition (EMT), a biological process in which epithelial cells lose their polarity and adhesion properties and acquire migratory and invasive characteristics. EMT is essential in embryonic development, wound healing, and also contributes to pathological conditions such as tumor metastasis and fibrosis[1][2][4]. SNAI1 and SNAI2 act primarily as transcriptional repressors, notably suppressing E-cadherin (CDH1) expression to destabilize epithelial junctions, but also directly or indirectly regulate a broad network of genes linked to cell differentiation, migration, invasion, and survival[1][2][3][4]. In cancer, they foster a more invasive phenotype and are implicated in resistance to apoptosis and therapy. Therapeutic modulation—typically via upstream pathway inhibition such as blocking TGF-beta signaling—has been explored, but direct targeting is challenging due to their roles in normal physiological processes and their nature as nuclear proteins[2]. For structured information, it is recommended to use: - SNAI1 (Snail): canonical full name "Zinc finger protein SNAI1" - SNAI2 (Slug): canonical full name "Zinc finger protein SNAI2"[1] "SNAIL/SLUG" as a combined target is not a standardized or correct single target, but rather references this small family of functionally related EMT-inducing transcription factors.

Other names

Snail (SNAI1)Snail1Slug (SNAI2)Snail2SNAIL family transcription factorsZinc finger protein SNAI1 / SNAI2

Drugs (like TGF-beta receptor inhibitors) may prevent EMT and migration by blocking Snail/Slug-mediated transcriptional changes. Modulation of SNAI1/2 expression can influence cell adhesion, invasiveness, and resistance to apoptosis.