ArticleCancer research2011
14-3-3sigma exerts tumor-suppressor activity mediated by regulation of COP1 stability.
Article in Cancer research, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 41 papers.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
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Who cites it
41 citing papers in PubMed, 57 citations in OpenAlex.
- COP1 drives renal cell carcinoma progression by targeting ACSL4 for ubiquitin-mediated degradation and inhibiting ferroptosis.Frontiers in oncology · 2025Article
- Constitutive photomorphogenic protein 1 ubiquitinates interleukin-1 receptor accessory protein in human liver cancer.Journal of cancer research and clinical oncology · 2023Article
- Effect of COP1 in Promoting the Tumorigenesis of Gastric Cancer by Down-Regulation of CDH18 via PI3K/AKT Signal Pathway.Analytical cellular pathology (Amsterdam) · 2023Article
- COP1 Acts as a Ubiquitin Ligase for PCDH9 Ubiquitination and Degradation in Human Glioma.Molecular neurobiology · 2022Article
- Fibrinogen activates focal adhesion kinase (FAK) promoting colorectal adenocarcinoma growth.Journal of thrombosis and haemostasis : JTH · 2021Article
- Impact of posttranslational modifications in pancreatic carcinogenesis and treatments.Cancer metastasis reviews · 2021Review
- YAP promotes the activation of NLRP3 inflammasome via blocking K27-linked polyubiquitination of NLRP3.Nature communications · 2021Article
- Regulation of p53 by E3s.Cancers · 2021Review
- The apple 14-3-3 protein MdGRF11 interacts with the BTB protein MdBT2 to regulate nitrate deficiency-induced anthocyanin accumulation.Horticulture research · 2021Article
- RFWD2 Knockdown as a Blocker to Reverse the Oncogenic Role of TRIB2 in Lung Adenocarcinoma.Frontiers in oncology · 2021Article
- The 14-3-3σ protein promotes HCC anoikis resistance by inhibiting EGFR degradation and thereby activating the EGFR-dependent ERK1/2 signaling pathway.Theranostics · 2021Article
- Regulation of p53 by the 14-3-3 protein interaction network: new opportunities for drug discovery in cancer.Cell death discovery · 2020Review
- Article
- Targeting Mechanoresponsive Proteins in Pancreatic Cancer: 4-Hydroxyacetophenone Blocks Dissemination and Invasion by Activating MYH14.Cancer research · 2019Article
- The pseudokinase TRIB1 toggles an intramolecular switch to regulate COP1 nuclear export.The EMBO journal · 2019Article
- The Ubiquitin Ligase COP1 Promotes Glioma Cell Proliferation by Preferentially Downregulating Tumor Suppressor p53.Molecular neurobiology · 2017Article
- 14-3-3σ downregulation suppresses ICC metastasis via impairing migration, invasion, and anoikis resistance of ICC cells.Cancer biomarkers : section A of Disease markers · 2017Article
- 14-3-3σ Contributes to Radioresistance By Regulating DNA Repair and Cell Cycle via PARP1 and CHK2.Molecular cancer research : MCR · 2017Article
- Essential Roles of E3 Ubiquitin Ligases in p53 Regulation.International journal of molecular sciences · 2017Review
- Article
Corrections and comments
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Authors and funding
12 authors at 4 institutions in 3 countries.
Funding
Abstract
Constitutive photomorphogenic 1 (COP1) is a p53-targeting E3 ubiquitin ligase that is downregulated by DNA damage through mechanisms that remain obscure. Here, we report that COP1 is not downregulated following DNA damage in 14-3-3σ null cells, implicating 14-3-3σ as a critical regulator in the response of COP1 to DNA damage. We also identified that 14-3-3σ, a p53 target gene product, interacted with COP1 and controlled COP1 protein stability after DNA damage. Mechanistic studies revealed that 14-3-3σ enhanced COP1 self-ubiquitination, thereby preventing COP1-mediated p53 ubiquitination, degradation, and transcriptional repression. In addition, we found that COP1 expression promoted cell proliferation, cell transformation, and tumor progression, manifesting its role in cancer promotion, whereas 14-3-3σ negatively regulated COP1 function and prevented tumor growth in a mouse xenograft model of human cancer. Immunohistochemical analysis of clinical breast and pancreatic cancer specimens demonstrated that COP1 protein levels were inversely correlated with 14-3-3σ protein levels. Together, our findings define a mechanism for posttranslational regulation of COP1 after DNA damage that can explain the correlation between COP1 overexpression and 14-3-3σ downregulation during tumorigenesis.
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Registered trials
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.