Related Experiment Video

Updated: May 21, 2026

Oncogene Expression Analysis with Alterations in pH in a Pancreatic Ductal Cell Line
06:24

Oncogene Expression Analysis with Alterations in pH in a Pancreatic Ductal Cell Line

Published on: April 11, 2025

Spotlight on the role of COP1 in tumorigenesis

Jean-Christophe Marine1

  • 1Laboratory for Molecular Cancer Biology, VIB-KULeuven, O&N I Herestraat 49, Leuven, Belgium. JeanChristophe.Marine@cme.vib-kuleuven.be

Nature Reviews. Cancer
|June 8, 2012
PubMed

Insights

Constitutive photomorphogenesis 1 (COP1), an E3 ubiquitin ligase, targets proteins for degradation. COP1 deficiency causes tumor formation, highlighting its role in cancer and the importance of E3 ligases in tumorigenesis.

Area of Science:

  • Oncology
  • Molecular Biology
  • Biochemistry

Background:

  • COP1 is an E3 ubiquitin ligase.
  • It mediates ubiquitylation and proteasomal degradation of protein substrates.
  • Originally identified in plant light signaling, it has roles in mammalian tumorigenesis.

Purpose of the Study:

  • Investigate the role of COP1 in cancer.
  • Identify COP1 substrates involved in tumorigenesis.
  • Understand the implications of E3 ligases in cancer development.

Main Methods:

  • Biochemical studies to identify COP1 targets.
  • Genetic studies in mice to assess COP1 deficiency.
  • Analysis of human cancer mutations in COP1 and its substrates.

Main Results:

  • Mammalian COP1 targets oncoproteins (JUN, ETV) and tumor suppressor p53.
  • COP1 deficiency in mice leads to spontaneous tumor formation.
  • Mutations in COP1 and its substrates are found in human cancers.

Conclusions:

  • COP1 plays a critical role in preventing tumor formation.
  • E3 ligases, including COP1, are significant players in cancer.
  • Further research into COP1 and E3 ligases is warranted for cancer therapy.

More Related Videos

Induction and Diagnosis of Tumors in Drosophila Imaginal Disc Epithelia08:14

Induction and Diagnosis of Tumors in Drosophila Imaginal Disc Epithelia

Published on: July 25, 2017

Live-imaging of Breast Epithelial Cell Migration After the Transient Depletion of TIP6008:13

Live-imaging of Breast Epithelial Cell Migration After the Transient Depletion of TIP60

Published on: December 7, 2017

Related Concept Videos

Cancer-Critical Genes I: Proto-oncogenes01:33

Cancer-Critical Genes I: Proto-oncogenes

Genes usually encode proteins necessary for the proper functioning of a healthy cell. Mutations can often cause changes to the gene expression pattern, thereby altering the phenotype.
When the function of certain critical genes, especially those involved in cell cycle regulation and cell growth signaling cascades, gets disrupted, it upsets the cell cycle progression. Such cells with unchecked cell cycles start proliferating uncontrollably and eventually develop into tumors.
Such genes that act...
Cancer-Critical Genes I: Proto-oncogenes01:33

Cancer-Critical Genes I: Proto-oncogenes

Genes usually encode proteins necessary for the proper functioning of a healthy cell. Mutations can often cause changes to the gene expression pattern, thereby altering the phenotype.
When the function of certain critical genes, especially those involved in cell cycle regulation and cell growth signaling cascades, gets disrupted, it upsets the cell cycle progression. Such cells with unchecked cell cycles start proliferating uncontrollably and eventually develop into tumors.
Such genes that act...
Abnormal Proliferation02:23

Abnormal Proliferation

Under normal conditions, most adult cells remain in a non-proliferative state unless stimulated by internal or external factors to replace lost cells. Abnormal cell proliferation is a condition in which the cell's growth exceeds and is uncoordinated with normal cells. In such situations, cell division persists in the same excessive manner even after cessation of the stimuli, leading to persistent tumors. The tumor arises from the damaged cells that replicate to pass the damage to the daughter...
The Retinoblastoma Gene01:20

The Retinoblastoma Gene

Tumor suppressor genes are normal genes that can slow down cell division, repair DNA mistakes, or program the cells for apoptosis in case of irreparable damage. Hence, they play an essential role in preventing the proliferation of damaged cells.
The first-ever tumor suppressor gene called Rb was identified in retinoblastoma - a rare eye tumor in children. In inherited forms of the disease, a child inherits one defective copy of the Rb gene, which predisposes them to retinoblastoma. However,...
The Retinoblastoma Gene01:20

The Retinoblastoma Gene

Tumor suppressor genes are normal genes that can slow down cell division, repair DNA mistakes, or program the cells for apoptosis in case of irreparable damage. Hence, they play an essential role in preventing the proliferation of damaged cells.
The first-ever tumor suppressor gene called Rb was identified in retinoblastoma - a rare eye tumor in children. In inherited forms of the disease, a child inherits one defective copy of the Rb gene, which predisposes them to retinoblastoma. However,...
Induced Pluripotent Stem Cells01:06

Induced Pluripotent Stem Cells

Stem cells are undifferentiated cells that divide and produce different cell types. Ordinarily, cells that have differentiated into a specific cell type are terminally differentiated; however, scientists have found a way to reprogram these mature cells so that they dedifferentiate and return to an unspecialized, proliferative state. These cells are pluripotent like embryonic stem cells—able to produce all cell types—and are called induced pluripotent stem cells (iPSCs).
Somatic cells are...