UNC6852 is a selective degrader that targets polycomb repressive complex 2 (PRC2) with IC50 of 247 nM for EED. UNC6852 is based on PROTAC and contains an EED226-derived ligand and a ligand for VHL.
UNC6852 contains an EED226-derived ligand and a ligand for VHL which bind to the WD40 aromatic cage of EED and CRL2VHL, respectively, to induce proteasomal degradation of PRC2 components, EED, EZH2, and SUZ12. Degradation of PRC2 with UNC6852 blocks the histone methyltransferase activity of EZH2, decreasing H3K27me3 levels in HeLa cells and diffuse large B cell lymphoma (DLBCL) cells containing EZH2 gain-of-function mutations. UNC6852 degrades both wild-type and mutant EZH2, and additionally displays anti-proliferative effects in this cancer model system.[1]
[1] Frances Potjewyd, et al. Cell Chem Biol. 2020 Jan 16;27(1):47-56.e15.