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Related Concept Videos

The Cell Cycle Control System02:11

The Cell Cycle Control System

The cell cycle is an organized set of events that leads the cell to divide into two daughter cells, each containing chromosomes identical to the parent cell. It is the cell cycle that leads to the formation of an entire organism from a single-cell zygote. Besides, cell division also functions in the renewal or repair of tissues in adult multicellular eukaryotes. For example, in the bone marrow, the stem cells divide to form new blood cells. Although essential for several functions, cell...
The Cell Cycle Control System02:11

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The cell cycle is an organized set of events that leads the cell to divide into two daughter cells, each containing chromosomes identical to the parent cell. It is the cell cycle that leads to the formation of an entire organism from a single-cell zygote. Besides, cell division also functions in the renewal or repair of tissues in adult multicellular eukaryotes. For example, in the bone marrow, the stem cells divide to form new blood cells. Although essential for several functions, cell...
The Spindle Assembly Checkpoint02:19

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The Cell Cycle Control System01:28

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A Microfluidic Technique to Probe Cell Deformability
09:47

A Microfluidic Technique to Probe Cell Deformability

Published on: September 3, 2014

Creative blocks: cell-cycle checkpoints and feedback controls.

A W Murray1

  • 1Department of Physiology, University of California, San Francisco 94143-0444.

Nature
|October 15, 1992
PubMed
Summary
This summary is machine-generated.

Cells use checkpoints to ensure DNA replication, repair, and chromosome segregation before division. Failures in these critical cell cycle controls can lead to cancer development.

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Area of Science:

  • Cell Biology
  • Molecular Biology
  • Genetics

Background:

  • Cell division requires completion of DNA replication, repair, and chromosome segregation.
  • Cell cycle checkpoints act as critical control points to monitor these processes.
  • Failures in cell cycle regulation are implicated in diseases like cancer.

Purpose of the Study:

  • To explain the role of cell cycle checkpoints in ensuring accurate cell division.
  • To highlight the importance of feedback controls in preventing genomic instability.
  • To connect failures in cell cycle regulation to cancer etiology.

Main Methods:

  • Review of molecular mechanisms underlying cell cycle checkpoints.
  • Analysis of feedback control systems in cell cycle progression.
  • Examination of the link between checkpoint dysfunction and oncogenesis.

Main Results:

  • Cell cycle checkpoints detect and arrest the cell cycle upon failures in DNA replication, repair, or spindle assembly.
  • These checkpoints involve intricate feedback loops ensuring fidelity of cell division.
  • Dysregulation of these feedback controls compromises genomic integrity.

Conclusions:

  • Cell cycle checkpoints are essential for preventing the propagation of genetic errors.
  • Defects in DNA repair and chromosome segregation checkpoints are significant contributors to cancer.
  • Understanding these control mechanisms is crucial for developing cancer therapies.