ArticleCell biology and toxicology2025
CUL1-neddylation contributes to K29-linked ubiquitination on p27 for autophagic degradation in sorafenib-resistant liver cancer.
Article in Cell biology and toxicology, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.
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Who cites it
7 citing papers in PubMed.
- Psammaplysene D overcomes sorafenib resistance in liver cancer by targeting FGFR4/CYP26A1-retinoic acid axis to drive ferroptosis.Journal of experimental & clinical cancer research : CR · 2026Article
- Selinexor enhances the sensitivity of hepatocellular carcinoma cells to sorafenib by regulating the BAX/Bcl-2/PUMA apoptotic pathway and the XPO1/p27 cell cycle pathway.Frontiers in oncology · 2026Article
- Integrating the hallmarks of cancer into autophagy: a perspective from underlying mechanisms to therapeutic strategies.Theranostics · 2026Review
- Integrated multi-omics of mitophagy-related molecular subtype characterization and biomarker identification in sepsis.Scientific reports · 2025Article
- Mitochondrial Dysfunction in Apoptosis-Resistant Acute Myeloid Leukemia Cells During a Sterile Inflammatory Response.Biomolecules · 2025Article
- The ubiquitination-autophagy axis in cancer therapy resistance: mechanistic insights and therapeutic opportunities.Frontiers in pharmacology · 2025Review
- Analysis of cullin family genes in rectal adenocarcinoma: expression, prognostic significance, and therapeutic implications.American journal of translational research · 2025Article
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Authors and funding
12 authors.
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Abstract
Sorafenib has demonstrated great efficacy in liver cancer, however, its application as first-line treatment has been hampered due to the emerging drug resistance. This study is aimed to investigate the mechanism underlying acquired sorafenib resistance in liver cancer. Based on GSE109211 and TCGA datasets, bioinformatics analysis was conducted to find the potential genes implicated in the sorafenib resistance in liver cancer. mCherry-/eGFP-LC3B dual-fluorescent system was used to assess autophagic state. Wild and mutant types of HA-labeled ubiquitin (K27, K29, K33, K48, K63, K29R and K48R) were used to identify the type of polyubiquitin chains added to p27 by CUL1. Herein, we identified that F-box protein (SCF) ubiquitin ligase complexes (CUL1 and SKP2) and NEDD8 were highly expressed in sorafenib-resistant tissues using both the public data and clinical samples. NEDD8-mediated CUL1 neddylation enhanced SCF ubiquitin ligase complex to target p27 and subsequently linked K29-linked polyubiquitin chains to p27. Furthermore, NBR1 facilitated the degradation of ubiquitinated p27 protein by enhancing autophagy flux. Knocking down of CUL1 could prevent ubiquitination- and autophagy-mediated p27 protein degradation. The resistance to sorafenib was suppressed with CUL1 knockdown both in vitro and in vivo. In conclusion, our findings indicated that blocking neddylation or autophagy can restore drug sensitivity, thus providing a potential strategy for overcoming sorafenib resistance in the future.
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