Boc-C1-PEG3-C4-OBn (PROTAC Linker 15) is a PEG-based PROTAC linker employed in the synthesis of various PROTACs, including PROTAC SGK3 degrader-1. PROTACs are composed of two distinct ligands connected by a linker; one ligand binds to an E3 ubiquitin ligase, while the other specifically interacts with the target protein. By leveraging the intracellular ubiquitin-proteasome system, PROTACs can selectively degrade target proteins[1].
PEG3-C4-OBn, a polyethylene glycol (PEG)-based PROTAC linker, is utilized in crafting the PROTAC SGK3 degrader-1, a potent SKG3 degrader leveraging PROTAC technology [1][2].
SGK1 inhibitor is an inhibitor of serum- and glucocorticoid-regulated kinase 1 (SGK1) and SGK2. It is selective for SGK1 and SGK2 over SGK3 in the presence of a high concentration of ATP. SGK1 inhibitor prevents phosphorylation of GSK3β in U2OS cells and decreases cell viability in BYL719-insensitive HCC1954 cells when used in combination with the PI3Kα inhibitor BYL719. SGK1 inhibitor reduces tumor growth in an HCC1954 mouse xenograft model when administered in combination with BYL719.