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Discovery of novel CRBN ligands by virtual screening and biological evaluation against multiple hematological cancer cell lines

ABSTRACT: Immunomodulatory drugs, functioning as cereblon (CRBN) E3 ligase ligands, have been approved for treating various hematological malignancies by hijacking the function of CRBN E3 ligase and inducing the degradation of multiple CRBN-associated substrates. However, the inevitable emergence of drug resistance, resulting from their skeletal similarity, and hematological toxicities pose significant obstacles to their clinical effectiveness. In this study, we report the development of a series of novel CRBN binding moieties, envisioned as a simple deletion of the methylene in isoindole cores of lenalidomide.

INSTRUMENT(S):

ORGANISM(S): Homo Sapiens (human)

TISSUE(S): Blood

SUBMITTER: Pengyun Li

LAB HEAD: Pengyun Li

PROVIDER: PXD061290 | Pride | 2025-10-13

REPOSITORIES: Pride

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			Action	DRS
	EBC-1-CONA.raw	Raw
	EBC-1-CONB.raw	Raw
	EBC-1-CONC.raw	Raw
	EBC-1-D19A.raw	Raw
	EBC-1-D19B.raw	Raw

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Publications

Discovery and Characterization of Novel IKZF1/3 Glue Degraders against Multiple Hematological Cancer Cell Lines.

Wei Ting T Wei Pengli P Wang Yalei Y Mao Yaqiu Y Yan Jian J Hu Xiaotong X Qi Zhenze Z Cai Xu X Jia Changkai C Zhao Zhiyuan Z Li Bingkun B Qiao Min M Zou Yaxin Y Yang Tingting T Sun Shiyang S Feng Xuesong X Li Pengyun P Shang Hongzhou H Zheng Zhibing Z

Oncology research 20250926 10

<h4>Objectives</h4>Immunomodulatory drugs (IMiDs), functioning as molecular glue degraders, have been approved for treating various hematological malignancies; however, the inevitable acquired drug resistance resulting from their skeletal similarity and hematological toxicities poses significant obstacles to their clinical treatment. The study aimed to develop degraders with potent efficiency and low toxicity.<h4>Methods</h4>Phenotypic profiling, elaborate structure-activity relationships (SAR), ...[more]

PMID: 41050081

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Treatment of MM cells with IMiDs or reducing the expression of EIF2C2 significantly affects steady-state levels of miRNAs

Project description:Lenalidomide is a therapeutically active compound that binds to E3 ubiquitin ligase recruiter cereblon (CRBN) and induces cytotoxicity. We have identified eukaryotic translation initiation factor 2 subunit C2 (EIF2C2) as a new member of CRBN-downstream binding protein that plays an important role in microRNA (miRNA) maturation and function. The treatment of immunomodulatory drug (IMiD)-sensitive multiple myeloma (MM) cells with lenalidomide altered the steady-state levels of CRBN, EIF2C2 and miRNAs and induced apoptosis. However, although the treatment of IMiD-resistant MM cells with lenalidomide altered the steady-state levels of CRBN, EIF2C2 and miRNAs, but did not massively induce apoptosis. In contrast, silencing of EIF2C2 with its small hairpin RNA significantly altered the levels of miRNAs and induced apoptosis regardless of whether those cells are sensitive or resistant to IMiDs. Therefore, EIF2C2 could be considered as a new drug target for overcoming IMiDs resistance in MM cells. To find the role of EIF2C2 in MM cell growth, OCI-My5 cell lines My5/LV and My5/CRBN, with low and high CRBN expression, respectively, were treated 12 different ways. The steady-state levels of miRNAs between (1) My5/LV, EIF2C2-shRNA-treated My5/LV and EIF2C2-cDNA-treated My5/LV cells, (2) My5/CRBN, EIF2C2-shRNA-treated My5/CRBN and EIF2C2-cDNA-treated My5/CRBN cells, (3) My5/LV cells, My5/LV cells treated with 10 ÂµM lenalidomide for 72 hours or 120 hours, and EIF2C2-cDNA-treated My5/LV cells treated with 10 ÂµM lenalidomide for 72 hours, and (4) My5/CRBN cells, My5/CRBN cells treated with 10 ÂµM lenalidomide for 72 hours or 120 hours, and EIF2C2-cDNA-treated My5/CRBN cells treated with 10 ÂµM lenalidomide for 72 hours, were compared in this array.

2016-03-09 | E-GEOD-61693 | biostudies-arrayexpress

Treatment of MM cells with IMiDs or reducing the expression of EIF2C2 significantly affects steady-state levels of miRNAs

2016-03-09 | GSE61693 | GEO

CRL4(CRBN) ubiquitin ligase profiling

Project description:In the 1950s the drug thalidomide administered as a sedative to pregnant women led ot the birth of thousands of children with multiple defects. Despite its teratogenicity, thalidomide and ist IMiD derivatives recently emerged as effective treatments for multiple myeloma and 5q-dysplasia. IMiDs target the CUL4-RBX1-DDB1-CRBN (CRL4(CRBN)) ubiquitin ligase. Through an unbiased screen we identify the homeobox trranscription factor MEIS2 as an endogenous substrate of CRL4(CRBN). By definition, a specific target of CRL4(CRBN) is expected to have a very low intensity on negative control arrays (E1_E2), (E1_CRBN), (E1_E2_Cdt2), (E1_E2_Cdt2_revlimid), (E1_E2_Cdt2_CSN) or with CRL4(CRBN) in presence of inhibitor (E1_E2_CRBN_revlimid) and high intensity on arrays with CRL4(CRBN) (E1_E2_CRBN) or CRL4(CRBN) in presence of CSN (E1_E2_CRBN_CSN) Accordingly 16 protein microarrays were subjected to in vitro ubiquitylation using the following enzyme combinations: 3x Uba1+UbcH5a; 2x Uba1+UbcH5a+CRL4(DDB2); 3x Uba1+UbcH5a+CRL4(CRBN); 2x Uba1+UbcH5a+CRL4(CRBN)+lenalidomide; 2x Uba1+UbcH5a+CRL4(CRBN)+CSN; 2x Uba1+UbcH5a+CRL4(Cdt2); 1x Uba1+UbcH5a+CRL4(Cdt2)+CSN; 1x Uba1+UbcH5a+CRL4(Cdt2)+lenalidomide

2014-05-13 | E-GEOD-57554 | biostudies-arrayexpress

CC-122, a pleiotropic pathway modifier, mimics an interferon response and has antitumor activity in DLBCL

Project description:Cereblon (CRBN), a substrate receptor of the E3 ubiquitin ligase complex CRL4CRBN, is the target of the immunomodulatory drugs lenalidomide and pomalidomide. Recently, it was demonstrated that binding of these drugs to CRBN promotes the ubiquitination and subsequent degradation of two common substrates, transcription factors Aiolos and Ikaros. Here we report that the pleiotropic pathway modifier CC-122, a new chemical entity termed pleiotropic pathway modifier binds CRBN and promotes degradation of Aiolos and Ikaros in diffuse large B-cell lymphoma (DLBCL) and T cells in vitro, in vivo and in patients, resulting in both cell autonomous as well as immunostimulatory effects. In DLBCL cell lines, CC-122-induced degradation or shRNA mediated knockdown of Aiolos and Ikaros correlates with increased transcription of interferon stimulated genes (ISGs) independent of interferon Î±, Î², Î³ production and/or secretion and results in apoptosis in both ABC and GCB-DLBCL cell lines. Our results provide mechanistic insight into the cell of origin independent anti-lymphoma activity of CC-122, in contrast to the ABC subtype selective activity of lenalidomide. Microarray analysis of the OCI-LY10 activated B-cell diffuse large B-cell lymphoma (ABC-DLBCL) cell line treated with the compound CC-122 for 18 hours

2015-11-26 | E-GEOD-75420 | biostudies-arrayexpress

Expression data from comparison of wild type and cereblon knock out murine T-cells

Project description:Thalidomide and other immunomodulatory drugs are effective therapies for certain hematological cancers where they kill tumor cells and stimulate T-cell immunity. These compounds mediate their functions by binding to and altering substrate specificity of cereblon (CRBN), an E3-ubiquitin ligase component of the DDB1/Cul4/Rbx1 complex3-5. Here, we report the results of crbn genetic deficiency in a mouse, which revealed CRBN functions as a suppressor of T-cell receptor (TCR) activation. We used microarrays to analyze the cereblon regulated gene expression changes following activation of wild type or cereblon knock out murine T-cells.

2020-05-06 | GSE81725 | GEO

Cereblon expression is required for the anti-myeloma activity of lenalidomide and pomalidomide [aCGH]

Project description:The precise molecular mechanism of action and targets through which thalidomide and related immunomodulatory drugs (IMiDs) exert their anti-tumor effects remains unclear. We investigated the role of cereblon (CRBN), a primary teratogenic target of thalidomide, in the anti-myeloma activity of IMiDs. CRBN depletion is initially cytotoxic to human myeloma cells but surviving cells with stable CRBN depletion become highly resistant to both lenalidomide and pomalidomide, but not to the unrelated drugs bortezomib, dexamethasone and melphalan. Acquired deletion of CRBN was found to be the primary genetic event differentiating isogenic MM1.S cell lines cultured to be sensitive or resistant to lenalidomide and pomalidomide. Gene expression changes induced by lenalidomide were dramatically suppressed in the presence of CRBN depletion further demonstrating that CRBN is required for lenalidomide activity. Downstream targets of CRBN include interferon regulatory factor 4 (IRF4) previously reported to also be a target of lenalidomide. Patients exposed to and putatively resistant to lenalidomide had lower CRBN levels in paired samples before and after therapy. In summary, CRBN is an essential requirement for IMiD activity, and a possible biomarker for the clinical assessment of anti-myeloma efficacy. We included two isogenic MM1.S cell lines, which differ in the sensibiligy to lenalidomide. We included MM1.S and MM1.S res, which were sensitive and resistant to lenalidomide, respectively.

2011-09-30 | E-GEOD-31451 | biostudies-arrayexpress

Cereblon expression is required for the anti-myeloma activity of lenalidomide and pomalidomide [expression profiling]

2011-09-30 | E-GEOD-31421 | biostudies-arrayexpress

CC-122, a pleiotropic pathway modifier, mimics an interferon response and has antitumor activity in DLBCL

Project description:Cereblon (CRBN), a substrate receptor of the E3 ubiquitin ligase complex CRL4CRBN, is the target of the immunomodulatory drugs lenalidomide and pomalidomide. Recently, it was demonstrated that binding of these drugs to CRBN promotes the ubiquitination and subsequent degradation of two common substrates, transcription factors Aiolos and Ikaros. Here we report that the pleiotropic pathway modifier CC-122, a new chemical entity termed pleiotropic pathway modifier binds CRBN and promotes degradation of Aiolos and Ikaros in diffuse large B-cell lymphoma (DLBCL) and T cells in vitro, in vivo and in patients, resulting in both cell autonomous as well as immunostimulatory effects. In DLBCL cell lines, CC-122-induced degradation or shRNA mediated knockdown of Aiolos and Ikaros correlates with increased transcription of interferon stimulated genes (ISGs) independent of interferon α, β, γ production and/or secretion and results in apoptosis in both ABC and GCB-DLBCL cell lines. Our results provide mechanistic insight into the cell of origin independent anti-lymphoma activity of CC-122, in contrast to the ABC subtype selective activity of lenalidomide.

2015-11-26 | GSE75420 | GEO

Cereblon expression is required for the anti-myeloma activity of lenalidomide and pomalidomide [expression profiling]

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