Sciellin (SCEL)

Sciellin is a multifunctional structural protein encoded by the SCEL gene, primarily recognized as a precursor component of the cornified envelope in terminally differentiated keratinocytes and other epithelial cells[1][2][4]. It localizes to the cell periphery and is involved in assembly or regulation of the cornified envelope proteins, with its LIM domain facilitating protein–protein interactions important for cellular differentiation[1][4]. SCEL expression is inducible by biomechanical stress and is important for maintaining structural integrity in epithelial and vascular tissues[1]. In cancer biology, SCEL acts in a highly context-dependent manner: in some cancers, it suppresses migration and enhances differentiation (e.g., colorectal cancer), while in others (notably pancreatic cancer), it activates the Notch pathway via Jagged-1 stabilization to promote proliferation, inhibit senescence, and drive metastasis[3][1]. Sciellin is being actively studied as a diagnostic and prognostic biomarker and a potential therapeutic target for various epithelial-derived malignancies[1][3][4]. No approved drugs are known to directly target sciellin as of the current literature.

Other names

FLJ21667MGC22531SCEL proteinsciellinsciellin protein

Notch pathway activation via Jagged-1 stabilization, JAK2/STAT3 signaling, TNF-α/NF-κB pathway activation (context- and cancer-type specific mechanisms)