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Related Concept Videos

Cancer02:18

Cancer

Cancers arise due to mutations in genes involved in the regulation of cell division, which leads to unrestricted cell proliferation. Modern science and medicine have made great strides in the understanding and treatment of cancer, including eradicating cancer in some patients. However, there is still no cure for cancer. This is largely due to the fact that cancer is a large group of many diseases.
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,...
What is Cancer?02:12

What is Cancer?

Cells and tissues must meticulously coordinate their activities for the normal functioning of the human body. Therefore, they exhibit socially responsible behavior - resting, growing, dividing, differentiating, or dying - for the organism’s benefit. Cancer arises when cells divide uncontrollably and invade other tissues or organs.
Although people have known about cancer for centuries, it was only in 1761 that Giovanni Morgagni of Padua performed a detailed autopsy of patients who died from...
Mitogens and the Cell Cycle02:38

Mitogens and the Cell Cycle

Mitogens and their receptors play a crucial role in controlling the progression of the cell cycle. However, the loss of mitogenic control over cell division leads to tumor formation. Therefore, mitogens and mitogen receptors play an important role in cancer research. For instance, the epidermal growth factor (EGF) - a type of mitogen and its transmembrane receptor (EGFR), decides the fate of the cell's proliferation. When EGF binds to EGFR, a member of the ErbB family of tyrosine kinase...
Mitogens and the Cell Cycle02:38

Mitogens and the Cell Cycle

Mitogens and their receptors play a crucial role in controlling the progression of the cell cycle. However, the loss of mitogenic control over cell division leads to tumor formation. Therefore, mitogens and mitogen receptors play an important role in cancer research. For instance, the epidermal growth factor (EGF) - a type of mitogen and its transmembrane receptor (EGFR), decides the fate of the cell's proliferation. When EGF binds to EGFR, a member of the ErbB family of tyrosine kinase...

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Cell competition and its implications for development and cancer.

Yoichiro Tamori1, Wu-Min Deng

  • 1Department of Biological Science, Florida State University, Tallahassee, USA.

Journal of Genetics and Genomics = Yi Chuan Xue Bao
|November 1, 2011
PubMed
Summary

Cell competition eliminates "loser" cells in multicellular organisms. This process removes aberrant cells, like precancerous cells, maintaining tissue integrity and normal development.

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Area of Science:

  • Developmental Biology
  • Cell Biology
  • Genetics

Background:

  • Cell competition is a biological process where less fit cells are eliminated by fitter cells within a tissue.
  • Mutant cells, particularly those with tumor-suppressor gene mutations, can exhibit overgrowth in isolation but are often eliminated when in proximity to wild-type cells.

Purpose of the Study:

  • To investigate the regulation and mechanisms of cell competition.
  • To understand how slower-growing and structurally defective cells are eliminated.
  • To explore the role of cell competition in tissue homeostasis and the removal of precancerous cells.

Main Methods:

  • Analysis of cell competition dynamics using slower-growing mutant cells.
  • Investigation of cell competition mechanisms with structurally defective mutant cells.
  • Review of recent studies on cell competition and its implications.

Main Results:

  • Loser cells, viable alone, undergo apoptosis when competing with winner cells.
  • Mutant tumor-suppressor cells are eliminated from wild-type tissues.
  • Cell competition mechanisms differ based on the type of mutant cell (slower-growing vs. structurally defective).

Conclusions:

  • Cell competition acts as a mechanism to eliminate less fit or aberrant cells.
  • This process is crucial for maintaining tissue integrity and normal development.
  • Cell competition may serve as an intrinsic surveillance system against precancerous cells.