XStAx-VHLL

Selective peptide-based β-catenin Degrader. Comprises a β-catenin-targeted stapled peptide, xStAx, linked to a VHL-binding peptide. Reduces β-catenin levels in HEK293T cells and colorectal cancer cell lines. Selectively degrades β-catenin over other Wnt signaling pathway components. Inhibits tumor growth in APCmin/+ mice, with constitutively active Wnt signaling, and reduces survival of patient-derived colorectal cancer cell organoids.