In vitro activity: C-122 is a novel agent for DLBCL with antitumor and immunomodulatory activity. In DLBCL cell lines, It binds CRBN and induces degradation or short hairpin RNA-mediated knockdown of Aiolos and Ikaros which correlates with increased transcription of interferon (IFN)-stimulated genes independent of IFN-α, -β, and -γ production and/or secretion and results in apoptosis in both activated B-cell (ABC) and germinal center B-cell DLBCL cell lines. CRBN is the molecular target of CC-122, CC-122 binding to CRBN recruits Aiolos/Ikaros to CRL4CRBN, and E3 ligase enzymatic activity is necessary for ubiquitination of Aiolos and Ikaros and thus their proteasomal degradation induced by CC-122. CC-122 induces IFN-regulated proteins and its mediated effects on the IFN pathway is independent of autocrine type I and II IFN secretion and signaling.

Kinase Assay: CC-122 is a novel agent for DLBCL with antitumor and immunomodulatory activity.CC-122 binds CRBN and degrades Aiolos and Ikaros resulting in a mimicry of IFN signaling and apoptosis in DLBCL. In vitro: CC122 inhibits proliferation and induces apoptosis in ABC and GCB DLBCL. In DLBCL cell lines, CC122-induced degradation or short hairpin RNA-mediated knockdown of Aiolos and Ikaros correlates with increased transcription of interferon (IFN)-stimulated genes independent of IFN-α, -β, and -γ production and/or secretion and results in apoptosis in both activated B-cell (ABC) and germinal center B-cell DLBCL.

Cell Assay: Diffuse Large B-Cell Lymphoma are cultured in RPMI-1640 containing 10-20% fetal bovine serum, 1% Penicillin/Streptomycin and 1 mM sodium pyruvate. 2×104 cells are plated per well in media containing either DMSO or various concentrations of CC-122. Cells are cultured for 5 days at 37 degrees Celsius after which tritiated thymidine is added to the cell culture for the final 6 hours. Cells are subsequently harvested onto filter plates. After the plates have dried, scintillation fluid is added to the plates and read on a Top-count reader.