Iberdomide (CC-220) is a novel oral immunomodulatory compound that targets cereblon , part of the CRL4CRBN E3 ubiquitin ligase complex, with an IC50 of 60 nM in a competitive TR-FRET assay. Iberdomide (CC-220) induces apoptosis with antitumor and immunostimulatory activities.
Targets
cereblon 60 nM
In vitro
In cellular degradation assays, treatment with CC-220 results in the loss of Ikaros protein levels with an EC50 of 1 nM compared to 67 nM for lenalidomide and 24 nM for pomalidomide. CC-220 is similarly potent toward Aiolos, with an EC50 of 0.5 nM compared to 87 nM for lenalidomide and 22 nM for pomalidomide. CC-220 is a potent anti-proliferative and pro-apoptotic compound that shows activity in several MM cell line categories with differing sensitivity to lenalidomide, pomalidomide and dexamethasone. CC-220 induces PBMC-mediated killing of all MM cell lines regardless of the level of Cereblon expression and cell autonomous sensitivity. CC-220 acts through binding of Cereblon, leading to the degradation of the hematopoietic transcription factors Ikaros and Aiolos, followed by disruption of the MM promoting c-Myc/IRF4 axis.
1.Cai X, Qiao Y, Diao C, Xu X, Chen Y, Du S, Liu X, Liu N, Yu S, Chen D et al.. (2014) Association between polymorphisms of the IKZF3 gene and systemic lupus erythematosus in a Chinese Han population.. PLoS ONE, 9 (10):(e108661). [PMID:25271777]
2.Bjorklund CC, Lu L, Kang J, Hagner PR, Havens CG, Amatangelo M, Wang M, Ren Y, Couto S, Breider M et al.. (2015) Rate of CRL4(CRBN) substrate Ikaros and Aiolos degradation underlies differential activity of lenalidomide and pomalidomide in multiple myeloma cells by regulation of c-Myc and IRF4.. Blood Cancer J, 5 (3):(e354). [PMID:26430725]
3.Matyskiela ME, Zhang W, Man HW, Muller G, Khambatta G, Baculi F, Hickman M, LeBrun L, Pagarigan B, Carmel G et al.. (2018) A Cereblon Modulator (CC-220) with Improved Degradation of Ikaros and Aiolos.. J Med Chem, 61 (2):(535-542). [PMID:28425720]
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G2227946