p53: the barrier to cancer stem cell formation
Related Experiment Video
Updated: May 2, 2026

Yeast As a Chassis for Developing Functional Assays to Study Human P53
Published on: August 4, 2019
Ronit Aloni-Grinstein1, Yoav Shetzer1, Tom Kaufman1
1Department of Molecular Cell Biology, Weizmann Institute of Science, Rehovot 76100, Israel.
Abstract:
The role of p53 as the "guardian of the genome" in differentiated somatic cells, triggering various biological processes, is well established. Recent studies in the stem cell field have highlighted a profound role of p53 in stem cell biology as well. These studies, combined with basic data obtained 20 years ago, provide insight into how p53 governs the quantity and quality of various stem cells, ensuring a sufficient repertoire of normal stem cells to enable proper development, tissue regeneration and a cancer free life. In this review we address the role of p53 in genomically stable embryonic stem cells, a unique predisposed cancer stem cell model and adult stem cells, its role in the generation of induced pluripotent stem cells, as well as its role as the barrier to cancer stem cell formation.
Insights
The p53 protein, known as the "guardian of the genome," is crucial for maintaining stem cell quantity and quality. It ensures proper development, tissue repair, and prevents cancer by regulating various stem cell types.
Area of Science:
- Molecular Biology
- Stem Cell Biology
- Cancer Research
Background:
- The tumor suppressor protein p53 is recognized for its role in differentiated cells.
- Emerging evidence indicates a significant function for p53 in stem cell regulation.
- Decades of research provide a foundation for understanding p53's impact on stem cells.
Purpose of the Study:
- To review the multifaceted roles of p53 in diverse stem cell populations.
- To elucidate p53's function in maintaining stem cell homeostasis and preventing cancer.
- To explore p53's involvement in induced pluripotent stem cells and cancer stem cell biology.
Main Methods:
- Literature review synthesizing existing data on p53 and stem cells.
- Analysis of p53's function in embryonic, adult, and cancer stem cells.
- Examination of p53's role in reprogramming and cancer prevention.
Main Results:
- p53 actively governs the quantity and quality of various stem cell types.
- p53 is essential for normal development, tissue regeneration, and cancer prevention.
- p53 acts as a critical barrier against the formation of cancer stem cells.
Conclusions:
- p53 plays a vital and complex role across different stem cell types.
- Understanding p53's function is key to regenerative medicine and cancer therapeutics.
- p53 is indispensable for maintaining genomic integrity and preventing tumorigenesis in stem cell populations.
Related Concept Videos
Abnormal Proliferation
DNA Damage can Stall the Cell Cycle
DNA Damage Can Stall the Cell Cycle
Negative Regulator Molecules
Cancer Stem Cells and Tumor Maintenance
Cancer stem cells are thought to originate from tissue-specific normal stem cells or progenitor cells. The normal stem cells usually reside in...
Cancer Stem Cells and Tumor Maintenance

