Related Experiment Video
Updated: Aug 7, 2026
10:24
Two- and Three-Dimensional Live Cell Imaging of DNA Damage Response Proteins
Published on: September 28, 2012
The centrosome and the DNA damage induced checkpoint
Lynda Fletcher1, Ruth J Muschel
1Department of Pathology, Children's Hospital of Philadelphia, Philadelphia, PA 19104, USA.
Cancer Letters
|June 13, 2006
Summary
The centrosome, a key cell structure, plays a role in DNA damage response and cell cycle control. DNA damage can cause centrosome abnormalities, impacting cell division and potentially leading to cancer.
Area of Science:
- Cell Biology
- Molecular Biology
- Cancer Research
Background:
- The centrosome functions as a cellular signaling hub.
- Key regulatory proteins involved in DNA damage response localize to the centrosome.
Purpose of the Study:
- To review the centrosome's role in DNA damage checkpoint control.
- To discuss how DNA damage signaling pathways affect the centrosome.
- To explore mechanisms causing centrosome abnormalities after DNA damage.
Main Methods:
- Literature review of studies on centrosome function and DNA damage response.
- Analysis of signaling pathways influencing cell cycle arrest.
- Examination of molecular mechanisms leading to centrosome amplification and multipolarity.
Main Results:
- The centrosome is implicated in mediating DNA damage checkpoints.
- DNA damage signaling pathways can initiate or maintain cell cycle arrest via centrosome interactions.
- DNA damage can induce centrosome hyperamplification and multipolarity.
Conclusions:
- The centrosome is a critical player in cellular response to DNA damage.
- Understanding centrosome dynamics in DNA damage is crucial for cancer research.
- Aberrant centrosome behavior contributes to genomic instability.
Related Concept Videos
02:36DNA Damage can Stall the Cell Cycle
In response to DNA damage, cells can pause the cell cycle to assess and repair the breaks. However, the cell must check the DNA at certain critical stages during the cell cycle. If the cell cycle pauses before DNA replication, the cells will contain twice the amount of DNA. On the other hand, if cells arrest after DNA replication but before mitosis, they will contain four times the normal amount of DNA. With a host of specialized proteins at their disposal,cells must use the right protein at...
02:36DNA Damage Can Stall the Cell Cycle
In response to DNA damage, cells can pause the cell cycle to assess and repair the breaks. However, the cell must check the DNA at certain critical stages during the cell cycle. If the cell cycle pauses before DNA replication, the cells will contain twice the amount of DNA. On the other hand, if cells arrest after DNA replication but before mitosis, they will contain four times the normal amount of DNA. With a host of specialized proteins at their disposal,cells must use the right protein at...
02:19The Spindle Assembly Checkpoint
The spindle assembly checkpoint is a molecular surveillance mechanism ensuring the fidelity of chromosome segregation during anaphase. The checkpoint monitors the completion of all the prerequisite steps before chromosome segregation to determine whether the segregation process should proceed or be delayed.
Many proteins function together to control the spindle assembly checkpoint. Mutations affecting these proteins may allow cells to proceed into anaphase prematurely, resulting in the...
Many proteins function together to control the spindle assembly checkpoint. Mutations affecting these proteins may allow cells to proceed into anaphase prematurely, resulting in the...
02:19The Spindle Assembly Checkpoint
The spindle assembly checkpoint is a molecular surveillance mechanism ensuring the fidelity of chromosome segregation during anaphase. The checkpoint monitors the completion of all the prerequisite steps before chromosome segregation to determine whether the segregation process should proceed or be delayed.
Many proteins function together to control the spindle assembly checkpoint. Mutations affecting these proteins may allow cells to proceed into anaphase prematurely, resulting in the...
Many proteins function together to control the spindle assembly checkpoint. Mutations affecting these proteins may allow cells to proceed into anaphase prematurely, resulting in the...
02:25Centrosome Duplication
The primary microtubule organizing center (MTOC) in animal cells is the centrosome. A centrosome has two cylindrical centrioles at its core. Each centriole consists of nine sets of three microtubules held together by proteins. The centrioles are positioned at right angles to each other and surrounded by a shapeless protein cloud called the pericentriolar matrix, or pericentriolar material (PCM).
To ensure that each daughter cell receives a centrosome after cell division, centrosome duplication...
To ensure that each daughter cell receives a centrosome after cell division, centrosome duplication...
02:25Centrosome Duplication
The primary microtubule organizing center (MTOC) in animal cells is the centrosome. A centrosome has two cylindrical centrioles at its core. Each centriole consists of nine sets of three microtubules held together by proteins. The centrioles are positioned at right angles to each other and surrounded by a shapeless protein cloud called the pericentriolar matrix, or pericentriolar material (PCM).
To ensure that each daughter cell receives a centrosome after cell division, centrosome duplication...
To ensure that each daughter cell receives a centrosome after cell division, centrosome duplication...