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Related Concept Videos

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,...
Loss of Tumor Suppressor Gene Functions01:12

Loss of Tumor Suppressor Gene Functions

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...
Loss of Tumor Suppressor Gene Functions01:12

Loss of Tumor Suppressor Gene Functions

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...
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.
Cancer-Critical Genes II: Tumor Suppressor Genes01:05

Cancer-Critical Genes II: Tumor Suppressor Genes

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...

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Related Experiment Video

Updated: May 26, 2026

Inducible and Reversible Dominant-negative (DN) Protein Inhibition
08:35

Inducible and Reversible Dominant-negative (DN) Protein Inhibition

Published on: January 7, 2019

Conserved RB functions in development and tumor suppression.

Gabriel M Gordon1, Wei Du

  • 1Ben May Department for Cancer Research, University of Chicago, Chicago, IL 60637, USA.

Protein & Cell
|December 20, 2011
PubMed
Summary

The retinoblastoma protein (pRb) is crucial for preventing human cancers due to its role in cell cycle control and genome stability. Research highlights its diverse functions and conserved roles across species.

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Reconstruct Human Retinoblastoma In Vitro
06:52

Reconstruct Human Retinoblastoma In Vitro

Published on: October 11, 2022

Related Experiment Videos

Last Updated: May 26, 2026

Inducible and Reversible Dominant-negative (DN) Protein Inhibition
08:35

Inducible and Reversible Dominant-negative (DN) Protein Inhibition

Published on: January 7, 2019

Reconstruct Human Retinoblastoma In Vitro
06:52

Reconstruct Human Retinoblastoma In Vitro

Published on: October 11, 2022

Area of Science:

  • Oncology
  • Molecular Biology
  • Genetics

Background:

  • The retinoblastoma protein (pRb) is a key tumor suppressor frequently inactivated in human cancers.
  • pRb regulates critical cellular processes including proliferation, differentiation, apoptosis, and genome stability.
  • Its diverse functions are mediated through large protein complexes involving transcription factors and chromatin modifiers.

Purpose of the Study:

  • To review recent advances in understanding the structure and function of pRb in tumor suppression.
  • To highlight evolutionarily conserved functions of the RB family using model organisms like Drosophila melanogaster.

Main Methods:

  • Literature review of recent scientific publications.
  • Analysis of research utilizing Drosophila melanogaster to study RB family functions.

Main Results:

  • pRb's inactivation is common in various human cancers, underscoring its importance.
  • pRb participates in a wide array of cellular functions essential for preventing tumorigenesis.
  • Drosophila research reveals conserved mechanisms of RB protein function.

Conclusions:

  • Understanding pRb's structure-function relationship is vital for cancer research and therapy.
  • The study of conserved RB family functions in model organisms provides valuable insights into human cancer biology.