ArticleGenes & genomics2025
E3 ligase MIB1 regulates STAT1/P21 signaling via regulation of FGFR1 in colorectal cancer.
Article in Genes & genomics, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
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Who cites it
2 citing papers in PubMed.
- Transcriptomic and network analyses identify epigenetic regulators of drug-tolerant persister (DTP) subsets in EGFR-mutant HCC827 non-small cell lung cancer.Genes & genomics · 2026Article
- A pan-cancer analysis of the oncogenic role of KIF13A in human tumors.Discover oncology · 2025Article
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3 authors.
Funding
Abstract
backgroundMind bomb 1 (MIB1) is an E3 ubiquitin ligase that promotes the polyubiquitination-mediated degradation of NOTCH ligands and plays an important role in various cancers by enhancing tumor cell proliferation. Also, MIB1 inhibited the cell cycle progression by transcriptional repression of P21 in HCT116 cells. Fibroblast growth factor receptor 1 (FGFR1) is a receptor tyrosine kinase (RTK) that plays a significant role in the progression of various cancers. However, the regulatory mechanisms underlying FGFR1-associated signaling in colon cancer remain unclear.
objectiveWe investigated whether MIB1 regulates protein stability of FGFR1 and impairs cell proliferation in HCT116 cells.
methodsWe conducted immunoprecipitation assay to identify correlation of MIB1 and FGFR1. We also tested mRNA level of FGFR1 in MIB1-depleted HCT116 cells using reverse transcription-quantitative polymerase chain reaction. Furthermore, we transfected HA-MIB1 and FLAG-FGFR1 and analyzed the downstream signaling cascades by western blotting. Cell viability was assessed using colony formation assays and MTT assay.
resultsFGFR1 interacts with MIB1 and controls FGFR1 protein level in HCT116 cells. Transcriptome analysis revealed that the mRNA levels of FGFR1 increased when MIB1 was depleted in HCT116 cells. Moreover, histone deacetylase 3 (HDAC3) is involved in histone deacetylation and transcriptional repression, mediating the interaction between MIB1 and FGFR1.
conclusionThese findings suggest the importance of MIB1-mediated transcriptional repression of FGFR1 and its potential therapeutic target in colon cancer.
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