Evidence map›Paper›PMID 41091304›Full record

ArticleGenes & genomics2025

Epigenetic regulation of Cereblon in cancer: molecular mechanisms and clinical implications.

Joo Mi Yi

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Article in Genes & genomics, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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5 · Who and what money

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1 author.

Joo Mi YiDepartment of Microbiology and Immunology, College of Medicine, Inje University, Busan, 47392, South Korea. jmyi76@inje.ac.kr.ORCID http://orcid.org/0000-0001-8341-330X

Funding

Inje University 20230159National Research Foundation of Korea 2023R1A2C1003916National Research Foundation of Korea RS-2025-02214129
6 · The paper itself

Abstract

backgroundCereblon (CRBN) serves as the substrate recognition subunit of the CRL4-CRBN E3 ubiquitin ligase complex and isthe primary target of immunomodulatory drugs (IMiDs) in cancer therapy. While CRBN mutations occur infrequently in cancer, reduced CRBN expression correlates with poor IMiD response and treatment resistance, suggesting nongeneticregulatory mechanisms may govern CRBN expression.

objectiveWe investigated CRBN expression patterns across multiple cancer types and examined the role of promotermethylation in regulating CRBN expression and its clinical significance.

methodsWe analyzed CRBN expression patterns using GENT2 database analysis and examined CRBN methylation status indiverse human cancer cell lines using methylation-specific PCR (MSP) and bisulfite genomic sequencing. We analyzedthe clinical significance of CRBN methylation and expression using TCGA and GENT2 databases with Kaplan-Meiersurvival analyses.

resultsCRBN expression was significantly downregulated in breast, cervical, head and neck, lung, and skin cancers comparedto normal tissues. We identified a CpG island 1kb upstream of the CRBN transcriptional start site, with cancer celllines exhibiting partial methylation patterns. Bisulfite sequencing confirmed specific CpG methylation sites withinCRBN promoter regions. CRBN promoter hypermethylation significantly correlated with increased mortality risk inbreast, lung, acute myeloid leukemia, and bladder cancers, while low CRBN expression was associated with poorsurvival in breast, lung, brain, and ovarian cancers. Combined low expression and high methylation stronglypredicted poor outcomes in breast and lung cancers.

conclusionsCRBN expression is partially regulated by promoter methylation in specific cancer types, with epigenetic silencingcontributing to treatment resistance and poor prognosis. CRBN methylation and expression serve as important pancancerprognostic biomarkers, highlighting the potential for epigenetic therapies to restore CRBN function andovercome therapeutic resistance.

Indexed as

Adaptor Proteins, Signal TransducingEpigenesis, GeneticNeoplasmsUbiquitin-Protein LigasesCell Line, TumorCpG IslandsDNA MethylationGene Expression Regulation, NeoplasticHumansPromoter Regions, GeneticAdaptor Proteins, Signal TransducingCRBN protein, humanUbiquitin-Protein LigasesCancer biomarkersCereblon (CRBN)DNA methylationE3 Ubiquitin LigaseEpigenetic regulation

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.