Related Experiment Video
Updated: Dec 7, 2025

08:35
Inducible and Reversible Dominant-negative DN Protein Inhibition
Published on: January 7, 2019
8.6K
Retinoblastoma Tumor Suppressor Protein Roles in Epigenetic Regulation
Frederick Guzman1, Yasamin Fazeli2, Meagan Khuu2
1Department of Pharmaceutical Sciences, University of California, 101 Theory #100, Irvine, CA 92617, USA.
Cancers
|October 2, 2020
Summary
The retinoblastoma protein (pRB) plays a crucial role in cell cycle regulation and cancer. This review explores pRB's diverse functions in epigenetic regulation, including chromatin remodeling and non-coding RNAs.
Area of Science:
- Molecular Biology
- Cancer Research
- Epigenetics
Background:
- Mutations in the retinoblastoma protein (pRB) are linked to various cancers.
- pRB is a key regulator of cell cycle exit.
- pRB influences biological processes beyond transcription regulation.
Purpose of the Study:
- To review the diverse epigenetic regulatory functions of pRB.
- To highlight pRB's roles in chromatin remodeling.
- To discuss pRB's involvement with non-coding RNAs.
Main Methods:
- Literature review of studies on pRB.
- Analysis of pRB's known functions in epigenetic mechanisms.
- Synthesis of information on pRB and chromatin dynamics.
Main Results:
- pRB is involved in nucleosome mobilization.
- pRB influences histone modifications.
- pRB plays a role in DNA methylation and non-coding RNA regulation.
Conclusions:
- pRB exerts diverse epigenetic functions.
- Understanding pRB's epigenetic roles is crucial for cancer research.
- pRB's functions extend to chromatin remodeling and non-coding RNAs.
Related Concept Videos
The Retinoblastoma Gene
4.5K
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 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,...
4.5K
Negative Regulator Molecules
37.7K
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.
37.7K
Epigenetic Regulation
33.0K
Epigenetic mechanisms play an essential role in healthy development. Conversely, precisely regulated epigenetic mechanisms are disrupted in diseases like cancer.
33.0K
Epigenetic Regulation
3.5K
Epigenetic changes alter the physical structure of the DNA without changing the genetic sequence and often regulate whether genes are turned on or off. This regulation ensures that each cell produces only proteins necessary for its function. For example, proteins that promote bone growth are not produced in muscle cells. Epigenetic mechanisms play an essential role in healthy development. Conversely, precisely regulated epigenetic mechanisms are disrupted in diseases like cancer.
X-chromosome...
X-chromosome...
3.5K
Abnormal Proliferation
5.0K
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...
5.0K
Loss of Tumor Suppressor Gene Functions
5.6K
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.
When the tumor suppressor genes develop mutations or are lost, cells start growing out of control, leading to cancer. However, a single functional copy of the tumor suppressor gene is enough for the cells to maintain their normal functions and cell...
When the tumor suppressor genes develop mutations or are lost, cells start growing out of control, leading to cancer. However, a single functional copy of the tumor suppressor gene is enough for the cells to maintain their normal functions and cell...
5.6K

