Related Experiment Video
Updated: May 17, 2026
07:08
Reprogramming Pancreatic Ductal Adenocarcinoma to Pluripotency
Published on: February 2, 2024
Epigenetic alterations involved in cancer stem cell reprogramming.
Purificación Muñoz1, Maria S Iliou, Manel Esteller
1Cancer Epigenetics and Biology Program, Bellvitge Biomedical Research Institute, Barcelona, Spain.
Molecular Oncology
|November 13, 2012
Summary
Cancer stem cells (CSCs) drive tumor growth, metastasis, and treatment resistance through epigenetic reprogramming. Understanding these epigenetic mechanisms is key to targeting CSCs and preventing cancer relapse.
Area of Science:
- Oncology
- Epigenetics
- Cancer Biology
Background:
- Tumors arise from malignant reprogramming driven by genetic and epigenetic alterations.
- Cancer stem cells (CSCs) possess self-renewal and tumor-generating capabilities.
- CSCs are implicated in tumor growth, metastasis, and resistance to therapy, leading to relapse.
Purpose of the Study:
- To review the epigenetic alterations governing CSC generation and maintenance.
- To explore the role of epigenetics in CSC-driven tumor progression, metastasis, and treatment response.
Main Methods:
- Literature review of current hypotheses and studies on cancer stem cells.
- Summary of epigenetic mechanisms including DNA methylation, histone modifications, and miRNAs.
- Analysis of CSC properties in relation to tumor progression and therapy.
Main Results:
- Epigenetic alterations are central to CSC characteristics.
- DNA methylation, histone modifications, and miRNAs regulate CSC self-renewal and differentiation.
- CSCs exhibit resistance to anti-cancer treatments, contributing to therapeutic failure.
Conclusions:
- Epigenetic modifications are critical regulators of cancer stem cell phenotypes.
- Targeting epigenetic mechanisms offers a promising strategy to overcome CSC-mediated resistance and prevent metastasis.
- Further research into epigenetic regulation of CSCs is essential for developing effective cancer therapies.
Related Concept Videos
02:40Cancer Stem Cells and Tumor Maintenance
Early diagnosis and treatment can often cure cancer. However, even with treatment, residual cells called cancer stem cells (CSC) might remain, often causing tumor recurrence. These cancer stem cells possess the potential for self-renewal and multi-lineage differentiation and are often responsible for the therapeutic resistance displayed in most cancers.
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 are thought to originate from tissue-specific normal stem cells or progenitor cells. The normal stem cells usually reside in...
02:40Cancer Stem Cells and Tumor Maintenance
Early diagnosis and treatment can often cure cancer. However, even with treatment, residual cells called cancer stem cells (CSC) might remain, often causing tumor recurrence. These cancer stem cells possess the potential for self-renewal and multi-lineage differentiation and are often responsible for the therapeutic resistance displayed in most cancers.
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 are thought to originate from tissue-specific normal stem cells or progenitor cells. The normal stem cells usually reside in...
01:29Somatic to iPS Cell Reprogramming
Reprogramming alters the gene expression in somatic cells, transforming them into induced pluripotent stem (iPS) cells over several generations. Scientists can reprogram cells by introducing genes for four transcription factors—Oct4, Sox2, Klf4, and c-Myc (OSKM) by viral or non-viral methods. These factors are also known as Yamanaka factors after Shinya Yamanaka, who first generated iPS cells using mouse skin cells. Yamanaka was awarded the Nobel Prize in Physiology or Medicine in 2012 for this...
01:32Chromatin Modification in iPS Cells
Chromatin modification alters gene expression; therefore, scientists can add histone-modifying enzymes, histone variants, and chromatin remodeling complexes to somatic cells to aid reprogramming into pluripotent stem (iPS) cells.
Compact chromatin makes reprogramming difficult. Enzymes, such as histone demethylases and acetyltransferases, are often added during reprogramming to loosen the chromatin, making the DNA more accessible to transcription factors. Molecules that inhibit histone...
Compact chromatin makes reprogramming difficult. Enzymes, such as histone demethylases and acetyltransferases, are often added during reprogramming to loosen the chromatin, making the DNA more accessible to transcription factors. Molecules that inhibit histone...
01:24Methods of Nuclear Reprogramming
Nuclear reprogramming is a process of transforming one cell type into an unrelated cell type by epigenetic changes that alter the cell’s original gene expression pattern. Such epigenetic changes force cells to express a different set of genes, which play a significant role in inducing transformation into other cell types. Nuclear reprogramming offers applications in reproductive cloning for livestock propagation and regenerative medicine — developing patient-specific cells for injury repair.
01:37Epigenetic Regulation
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...