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Related Concept Videos

Competition02:34

Competition

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When organisms require the same limited resources within an environment, they may have to compete for them. Competition is a net-negative interaction. Even if two competing individuals or populations do not interact directly, the overall fitness of both competitors is lowered as a result of not having full access to the limited resource.
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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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Replicative cell senescence is a property of cells that allows them to divide a finite number of times throughout the organism's lifespan while preventing excessive proliferation. Replicative senescence is associated with the gradual loss of the telomere — short, repetitive DNA sequences found at the end of the chromosomes. Telomeres are bound by a group of proteins to form a protective cap on the ends of chromosomes. Embryonic stem cells express telomerase — an enzyme that adds...
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Cell competition: A historical perspective.

Ginés Morata1

  • 1Centro de Biología Molecular CSIC-UAM, Madrid, Spain.

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|March 29, 2021
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Summary
This summary is machine-generated.

Cell competition removes unfit cells from animal tissues to maintain organism health. This review traces the history and evolution of understanding this crucial biological process.

Keywords:
ApoptosisJNK pathwayMinutes mutantsTissue homeostasisWinner/loser cells

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Area of Science:

  • Developmental Biology
  • Cell Biology
  • Genetics

Background:

  • Cell competition is a biological mechanism for removing unfit cells.
  • It functions as a surveillance system in animal tissues.
  • The phenomenon was first identified in Drosophila.

Purpose of the Study:

  • To review the field of cell competition.
  • To highlight the historical context of cell competition research within Developmental Biology.
  • To outline the evolution of scientific understanding of this process.

Main Methods:

  • Literature review of historical and current research on cell competition.
  • Synthesis of key observations and conceptual shifts in the field.
  • Historical analysis within the framework of XX-century Developmental Biology.

Main Results:

  • Cell competition is a conserved homeostatic process across metazoans.
  • It plays a vital role in maintaining tissue integrity and organismal fitness.
  • The understanding of cell competition has evolved significantly since its discovery.

Conclusions:

  • Cell competition is essential for removing potentially harmful cells.
  • Its discovery and study have significantly contributed to Developmental Biology.
  • Further research continues to elucidate the mechanisms and implications of cell competition.