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Cancer Stem Cells and Tumor Maintenance

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 Maintenance

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...

Distinctive Features of Adult Stem Cells vs Cancer Stem Cells

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:...

Adaptive Mechanisms in Cancer Cells

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 Cells

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,...

Metastasis

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 28, 2026

Isolation and Characterization of a Head and Neck Squamous Cell Carcinoma Subpopulation Having Stem Cell Characteristics

Isolation and Characterization of a Head and Neck Squamous Cell Carcinoma Subpopulation Having Stem Cell Characteristics

Published on: May 11, 2016

Cancer stem cells: beyond Koch's postulates.

Emmanuel Garcion¹, Philippe Naveilhan, François Berger

¹INSERM U646, F-49100, France.

|October 17, 2008

Summary

Cancer stem cell theory mirrors historical germ theory but overlooks crucial cell interactions. Rethinking disease causation from cellular entities to a "pathogenic field" may unlock cures for cancer and resistant infections.

Area of Science:

Oncology
Microbiology
Cell Biology

Background:

Infectious diseases historically dominated mortality, shaping medical reasoning based on microbiology.
The cancer stem cell concept, positing specific cells drive tumor growth, echoes historical germ theory (e.g., Koch's postulates).
Emerging evidence highlights the significance of cell-cell interactions and the tumor microenvironment.

Purpose of the Study:

To critically evaluate the cancer stem cell concept in relation to Koch's postulates.
To explore alternative models for understanding cancer and infectious disease pathogenesis.
To propose a paradigm shift towards a "pathogenic field" concept.

Main Methods:

Comparative analysis of the cancer stem cell concept and Koch's postulates.

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Establishment of Cancer Stem Cell Cultures from Human Conventional Osteosarcoma

Establishment of Cancer Stem Cell Cultures from Human Conventional Osteosarcoma

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Last Updated: Jun 28, 2026

Isolation and Characterization of a Head and Neck Squamous Cell Carcinoma Subpopulation Having Stem Cell Characteristics

Isolation and Characterization of a Head and Neck Squamous Cell Carcinoma Subpopulation Having Stem Cell Characteristics

Published on: May 11, 2016

Studying Pancreatic Cancer Stem Cell Characteristics for Developing New Treatment Strategies

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Published on: June 20, 2015

Establishment of Cancer Stem Cell Cultures from Human Conventional Osteosarcoma

Establishment of Cancer Stem Cell Cultures from Human Conventional Osteosarcoma

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Literature review on tumor microenvironment and cell-cell interactions.

Theoretical framework development for a "pathogenic field" model.

Main Results:

The cancer stem cell model, like germ theory, focuses on a specific causative entity, potentially neglecting broader environmental and interactive factors.
Accumulating data emphasize the role of intercellular communication and the tumor ecosystem in disease progression.
A "pathogenic field" concept offers a potentially unifying framework for understanding complex diseases.

Conclusions:

The cancer stem cell concept may be an oversimplification, analogous to early germ theory.
Understanding disease, including cancer and drug-resistant infections, may require moving beyond single-entity causation.
A "pathogenic field" perspective could be pivotal for developing novel therapeutic strategies.