SNIPER

Specific and Non-genetic inhibitor of apoptosis protein [IAP]-dependent Protein Erasers (SNIPER) is designed to induce IAP-mediated ubiquitylation and proteasomal degradation of target proteins. SNIPER and PROTAC are hybrid molecules composed of two different ligands connected by a linker; one ligand is for a target protein and the other is for E3 ubiquitin ligases. A series of SNIPER(ABL) compounds are synthesized by combination of various inhibitors (e.g. ABL, BRD, AR, ER) and IAP ligands, and the linker is optimized for protein knockdown activity.