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Related Concept Videos

Cancer Stem Cells and Tumor Maintenance02:40

Cancer 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 and Tumor Maintenance02:40

Cancer 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...
Adaptive Mechanisms in Cancer Cells02:53

Adaptive Mechanisms in Cancer Cells

Cancer cells accumulate genetic changes at an abnormally rapid rate due to the defects in the DNA repair mechanisms. From an evolutionary perspective, such genetic instability is advantageous for cancer development. Mutant cell lines accumulate a series of beneficial mutations that contribute to their progression into cancer.
Some of the advantages that cancer cells have on normal cells include - enhanced ability to divide without terminally differentiating, induce new blood vessel formation,...
Adaptive Mechanisms in Cancer Cells02:53

Adaptive Mechanisms in Cancer Cells

Cancer cells accumulate genetic changes at an abnormally rapid rate due to the defects in the DNA repair mechanisms. From an evolutionary perspective, such genetic instability is advantageous for cancer development. Mutant cell lines accumulate a series of beneficial mutations that contribute to their progression into cancer.
Some of the advantages that cancer cells have on normal cells include - enhanced ability to divide without terminally differentiating, induce new blood vessel formation,...
Distinctive Features of Adult Stem Cells vs Cancer Stem Cells01:18

Distinctive Features of Adult Stem Cells vs Cancer Stem Cells

A stem cell is an unspecialized cell that can divide without limit as needed and can, under specific conditions, differentiate into specialized cells.
Adult stem cells
Adult stem cells are tissue-specific; hence, they divide to develop the tissue from which they originate. One type of adult stem cell is the epithelial stem cell, which gives rise to the keratinocytes in the multiple layers of epithelial cells in the epidermis of the skin. Adult bone marrow has three distinct types of stem cells:...
Metastasis02:30

Metastasis

Metastasis is the spread of cancer cells from the original site to distant locations in the body. Cancer cells can spread via blood vessels (hematogenous) as well as lymph vessels in the body.
Epithelial-to-Mesenchymal Transition
The epithelial-to-mesenchymal transition or EMT is a developmental process commonly observed in wound healing, embryogenesis, and cancer metastasis. EMT is induced by transforming growth factor-beta (TGF-β) or receptor tyrosine kinase (RTK) ligands, which further...

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Related Experiment Video

Updated: Jun 25, 2026

Studying Pancreatic Cancer Stem Cell Characteristics for Developing New Treatment Strategies
07:29

Studying Pancreatic Cancer Stem Cell Characteristics for Developing New Treatment Strategies

Published on: June 20, 2015

Cancer stem cells in solid tumors: an overview.

Catherine Adell O'Brien1, Antonija Kreso, John E Dick

  • 1Department of General Surgery, Toronto General Hospital, University Health Network, Toronto, Ontario, Canada. cobrien@uhnres.utoronto.ca

Seminars in Radiation Oncology
|March 3, 2009
PubMed
Summary

Cancer stem cells (CSCs) drive tumor growth and are resistant to therapy. Understanding CSCs is crucial for developing new cancer treatments.

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Area of Science:

  • Oncology
  • Cancer Biology
  • Cell Biology

Background:

  • Tumors exhibit significant cellular heterogeneity.
  • Solid tumors often display hierarchical organization.
  • Tumor growth is driven by a small population of cancer stem cells (CSCs).

Purpose of the Study:

  • To explore the role of cancer stem cells (CSCs) in tumor growth.
  • To investigate the therapeutic resistance of CSCs.
  • To discuss the clinical implications of CSC research.

Main Methods:

  • Review of existing evidence on tumor heterogeneity.
  • Analysis of studies on cancer stem cell hierarchy.
  • Examination of data regarding CSC resistance to therapies.

Main Results:

  • CSCs are a small subset of tumor cells but initiate and drive tumor growth.
  • CSCs demonstrate resistance to conventional chemotherapy and radiation therapy.
  • This resistance highlights the clinical significance of CSCs.

Conclusions:

  • Cancer stem cells are critical drivers of tumor progression.
  • The inherent resistance of CSCs presents a therapeutic challenge.
  • Targeting CSCs holds potential for future cancer treatment strategies.