Nuclear endonuclease G controls cell proliferation in ovarian cancer

Ye Na Choi1, Tae Woong Seo1, Yui Taek Lee1

  • 1Department of Biology, Kyung Hee University, Seoul, South Korea.

FEBS Open Bio
|February 3, 2023
PubMed

Insights

Endonuclease G does not cause cell death in ovarian cancer but influences proliferation. Targeting this enzyme may offer new therapeutic strategies for ovarian cancer treatment.

Area of Science:

  • Oncology
  • Molecular Biology
  • Biochemistry

Background:

  • Ovarian cancer exhibits significant genetic heterogeneity.
  • Current treatments like chemotherapy have limited efficacy due to toxicity and recurrence.
  • Identifying novel therapeutic targets is crucial for improving ovarian cancer treatment outcomes.

Purpose of the Study:

  • To investigate the role of endonuclease G in ovarian cancer.
  • To determine if endonuclease G functions as a cell death effector in ovarian cancer.
  • To explore the potential of targeting endonuclease G as a therapeutic strategy.

Main Methods:

  • Analysis of endonuclease G expression in ovarian cancer.
  • Investigation of endonuclease G's function in relation to cell death and DNA digestion.
  • Assessment of the modulation of endonuclease G by reactive oxygen species.
  • Evaluation of endonuclease G's role in ovarian cancer cell proliferation.

Main Results:

  • Endonuclease G expression is altered in ovarian cancer.
  • Endonuclease G does not function as a cell death effector by digesting chromosomal DNA in ovarian cancer.
  • Endonuclease G activity is modulated by intracellular reactive oxygen species dynamics.
  • Endonuclease G plays a role in ovarian cancer cell proliferation.

Conclusions:

  • Endonuclease G's role in ovarian cancer is not as a DNA-degrading cell death effector.
  • Endonuclease G's involvement in proliferation, modulated by reactive oxygen species, presents a potential therapeutic target.
  • Targeting endonuclease G, alone or in combination, may offer a novel treatment approach for ovarian cancer and other cancers with high endonuclease G expression.

Related Concept Videos

Negative Regulator Molecules01:23

Negative Regulator Molecules

Positive regulators allow a cell to advance through cell cycle checkpoints. Negative regulators have an equally important role as they terminate a cell’s progression through the cell cycle—or pause it—until the cell meets specific criteria.
35.5K
Inhibition of Cdk Activity02:34

Inhibition of Cdk Activity

The orderly progression of the cell cycle depends on the activation of Cdk protein by binding to its cyclin partner. However, the cell cycle must be restricted when undergoing abnormal changes. Most cancers correlate to the deregulated cell cycle, and since Cdks are a central component of the cell cycle, Cdk inhibitors are extensively studied to develop anticancer agents. For instance, cyclin D associates with several Cdks, such as Cdk 4/6, to form an active complex. The cyclin D-Cdk4/6 complex...
4.9K
The Cell Cycle Control System01:28

The Cell Cycle Control System

The cell cycle regulation directs how a cell proceeds from one phase to the next and begins mitosis. The cell cycle control system includes intracellular regulatory molecules and external triggers. They provide "stop" or "advance" signals and operate at specific cell cycle stages termed checkpoints to ensure that a particular process is completed before the cell advances to the next phase.
Cyclins and cyclin-dependent kinases (Cdks) are the primary cell cycle regulators and...
3.1K
Molecular Factors Affecting Cell Division01:27

Molecular Factors Affecting Cell Division

Several external and internal factors influence the initiation and inhibition of cell division. For instance, the death of nearby cells or the release of human growth hormone (hGH) promotes cell division. In contrast, lack of hGH or crowding of cells can inhibit cell division.
Several proteins function as internal regulators to ensure each cell cycle stage is completed faithfully before proceeding to the next. Regulator molecules may act directly or influence the activity or production of other...
3.2K
Mitogens and the Cell Cycle02:38

Mitogens and the Cell Cycle

Mitogens and their receptors play a crucial role in controlling the progression of the cell cycle. However, the loss of mitogenic control over cell division leads to tumor formation. Therefore, mitogens and mitogen receptors play an important role in cancer research. For instance, the epidermal growth factor (EGF) - a type of mitogen and its transmembrane receptor (EGFR), decides the fate of the cell's proliferation. When EGF binds to EGFR, a member of the ErbB family of tyrosine kinase...
6.6K
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...
4.6K