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Related Concept Videos

Adaptive Mechanisms in Cancer Cells02:53

Adaptive Mechanisms in Cancer Cells

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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,...
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Cancer Stem Cells and Tumor Maintenance02:40

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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.
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The Tumor Microenvironment02:17

The Tumor Microenvironment

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Every normal cell or tissue is embedded in a complex local environment called stroma, consisting of different cell types, a basal membrane, and blood vessels. As normal cells mutate and develop into cancer cells, their local environment also changes to allow cancer progression. The tumor microenvironment (TME) consists of a complex cellular matrix of stromal cells and the developing tumor. The cross-talk between cancer cells and surrounding stromal cells is critical to disrupt normal tissue...
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Tumor Progression02:07

Tumor Progression

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Tumor progression is a phenomenon where the pre-formed tumor acquires successive mutations to become clinically more aggressive and malignant. In the 1950s, Foulds first described the stepwise progression of cancer cells through successive stages.
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Metastasis02:30

Metastasis

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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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Isolation and Characterization of Tumor-initiating Cells from Sarcoma Patient-derived Xenografts
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Cellular Mechanisms Underlying Intertumoral Heterogeneity.

Kate D Sutherland1, Jane E Visvader1

  • 1Stem Cells and Cancer Division, The Walter and Eliza Hall Institute of Medical Research, Parkville, Victoria 3052, Australia; Department of Medical Biology, The University of Melbourne, Parkville, Victoria 3010, Australia.

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Understanding the cellular origins of cancer is key. Identifying specific cells that initiate tumors aids in earlier diagnosis and developing targeted prevention therapies for cancer families.

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Heterogeneity Mapping of Protein Expression in Tumors using Quantitative Immunofluorescence
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Area of Science:

  • Oncology
  • Cell Biology
  • Cancer Research

Background:

  • Intertumoral heterogeneity, a hallmark of cancer, arises from intrinsic and extrinsic factors.
  • The 'cell of origin' and its genetic/epigenetic profile significantly influence cancer subtype development.
  • Distinct organ cells can serve as the origin for different cancer subtypes.

Purpose of the Study:

  • To review recent advancements in identifying the cellular origins of solid cancers.
  • To highlight the importance of understanding target cell populations for cancer diagnosis and prevention.

Main Methods:

  • Review of recent scientific literature on cancer cell origins.
  • Analysis of intrinsic mechanisms (genetic/epigenetic factors, cell of origin).
  • Evaluation of extrinsic factors (microenvironment influences like dedifferentiation).

Main Results:

  • Tissue-specific stem and progenitor cells are primary targets for tumor initiation.
  • The microenvironment can induce dedifferentiation, influencing the cell of origin.
  • Identifying these cells is crucial for early detection and relapse monitoring.

Conclusions:

  • Deciphering cellular origins is vital for advancing cancer diagnosis and treatment.
  • Understanding the cell of origin informs the design of effective prevention strategies for at-risk populations.
  • This knowledge aids in detecting premalignant clones during cancer relapse.