Related Experiment Video
Updated: May 30, 2026
14:57
Yeast As a Chassis for Developing Functional Assays to Study Human P53
Published on: August 4, 2019
p53, Stem Cells, and Reprogramming: Tumor Suppression beyond Guarding the Genome
Benjamin T Spike1, Geoffrey M Wahl
1Gene Expression Laboratory, Salk Institute for Biological Studies, La Jolla, CA, USA.
Genes & Cancer
|July 23, 2011
Summary
The tumor suppressor p53 (also known as TP53) influences stem cell properties. Loss of p53 may promote cancer stem cell-like plasticity, driving tumor progression and treatment resistance.
Area of Science:
- Oncology
- Molecular Biology
- Cancer Stem Cell Biology
Background:
- The tumor suppressor p53 (also known as TP53) traditionally functions to prevent cancer by inducing cell death or cell cycle arrest in response to DNA damage.
- Emerging evidence suggests p53 also plays roles in cellular processes like self-renewal and differentiation, which are critical for stemness.
- Loss of p53 is increasingly linked to stem-like properties in cancer cells, contributing to tumor heterogeneity and progression.
Purpose of the Study:
- To explore the emerging connection between p53 loss and the acquisition of stem-like characteristics in cancer cells.
- To discuss potential molecular and cellular mechanisms underlying this link.
- To consider the implications for cancer progression and treatment resistance.
Main Methods:
- Review and synthesis of recent scientific literature and findings.
- Discussion of molecular pathways and cellular processes involved.
- Analysis of the functional and phenotypic similarities between p53-deficient cells and stem cells.
Main Results:
- Accumulating evidence supports a link between p53 deficiency and the emergence of tumor cells with stem-like phenotypes.
- Several potential molecular and cellular mechanisms are proposed to mediate the influence of p53 on stemness.
- p53 loss may contribute to tumor cell plasticity, heterogeneity, and potentially treatment resistance.
Conclusions:
- The role of p53 in regulating stemness is an active area of research with significant implications for understanding cancer.
- Understanding how p53 loss promotes stem-like states is crucial for developing novel cancer therapies.
- Further investigation is needed to fully elucidate the mechanisms and clinical relevance of the p53-stemness connection.
Related Concept Videos
02:23Abnormal 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...
01:05Cancer-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...
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...
01:05Cancer-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...
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...
02:36DNA Damage can Stall the Cell Cycle
In response to DNA damage, cells can pause the cell cycle to assess and repair the breaks. However, the cell must check the DNA at certain critical stages during the cell cycle. If the cell cycle pauses before DNA replication, the cells will contain twice the amount of DNA. On the other hand, if cells arrest after DNA replication but before mitosis, they will contain four times the normal amount of DNA. With a host of specialized proteins at their disposal,cells must use the right protein at...
02:36DNA Damage Can Stall the Cell Cycle
In response to DNA damage, cells can pause the cell cycle to assess and repair the breaks. However, the cell must check the DNA at certain critical stages during the cell cycle. If the cell cycle pauses before DNA replication, the cells will contain twice the amount of DNA. On the other hand, if cells arrest after DNA replication but before mitosis, they will contain four times the normal amount of DNA. With a host of specialized proteins at their disposal,cells must use the right protein at...
01:23Negative 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.