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Related Concept Videos

Centrioles and Centrosomes01:13

Centrioles and Centrosomes

Most animal cells comprise a pair of centrioles together called a centrosome. The cell duplicates its centrosome and contains two centrosomes side-by-side, which begin to move apart during the prophase. As the centrosomes migrate to two different sides of the cell, microtubules start extending from each centrosome toward the other end. The mitotic spindle is composed of the centrosomes and their emerging microtubules.
Near the end of the prophase, also called late prophase or "prometaphase,"...
Separation of Sister Chromatids02:17

Separation of Sister Chromatids

At the transition from prophase to metaphase, there is a reduction in cohesion along the chromosomal arms, resulting in the resolution of sister chromatids. However, residual cohesin connections remain to hold the sister chromatids together until the transition from metaphase to anaphase. The residual connection prevents any premature separation of sister chromatids, blocking the risks of aneuploidy within the daughter cells.
At the onset of anaphase, separase, a proteolytic enzyme, is...
The Spindle Assembly Checkpoint02:19

The 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...
The Spindle Assembly Checkpoint02:19

The 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...
Centrosome Duplication02:25

Centrosome 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...
Centrosome Duplication02:25

Centrosome 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...

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Quantitative Immunofluorescence Assay to Measure the Variation in Protein Levels at Centrosomes
09:39

Quantitative Immunofluorescence Assay to Measure the Variation in Protein Levels at Centrosomes

Published on: December 20, 2014

Regulating the transition from centriole to basal body.

Tetsuo Kobayashi1, Brian D Dynlacht

  • 1Department of Pathology, School of Medicine, New York University Cancer Institute, New York, NY 10016, USA.

The Journal of Cell Biology
|May 4, 2011
PubMed
Summary

This study explores how centrioles switch between roles in the cell cycle. Centrioles form spindle poles during mitosis and act as basal bodies in interphase. Recent findings suggest these transitions are tightly regulated. The authors propose that molecular signals control these changes. Disruptions in centriole regulation may lead to ciliopathies and cancer. The study highlights the importance of understanding these mechanisms. Researchers suggest that specific proteins mediate centriole state changes. These findings provide a foundation for future research into centriole biology.

Keywords:
centriole functioncell cycle regulationbasal body formationciliopathy mechanisms

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Area of Science:

  • Cell cycle regulation in developmental biology
  • Ciliogenesis within cell biology
  • Centrosome function in molecular medicine

Background:

Understanding how centrioles transition between roles is a critical gap in cell biology. Prior research has shown centrioles form spindle poles during mitosis and serve as basal bodies in interphase. However, the mechanisms governing this switch remain unclear. No prior work had resolved how these dual functions are coordinated. This uncertainty drives the need for new insights into regulatory pathways. Recent studies begin to address this knowledge gap. The molecular details of centriole-to-basal-body conversion are still emerging. Researchers aim to clarify how these transitions are controlled. These findings could help explain how disruptions in centriole function lead to disease.

Purpose Of The Study:

This work aims to explore how centrioles switch between mitotic and ciliary roles. The study focuses on regulatory pathways controlling centriole function. The authors seek to identify mechanisms that enable centrioles to act as centrosomes or basal bodies. Understanding these transitions is essential for explaining ciliopathy and cancer risks. The study addresses how centriole roles are coordinated with the cell cycle. Researchers investigate how imbalances in centrosome or cilia function might arise. The goal is to uncover molecular signals that govern centriole state changes. These findings could clarify how defects in regulation contribute to disease.

Main Methods:

The study reviews recent findings on centriole regulation. The authors synthesize evidence from multiple experimental models. They analyze molecular pathways involved in centriole state transitions. The approach includes examining how centrosome and cilia functions are balanced. The researchers assess how centriole roles are controlled in different cell states. They focus on proteins and signaling events that regulate centriole function. The study incorporates data from cell biology and genetics experiments. The authors integrate findings from diverse research fields to build a comprehensive view.

Main Results:

Recent findings suggest that centriole roles are tightly regulated. The transition from centriole to basal body involves molecular switches. Studies indicate that these changes are coordinated with the cell cycle. Disruptions in centriole regulation may lead to ciliopathies and cancer. The balance between centrosome and cilia functions is critical for cell health. Researchers propose that specific proteins mediate centriole state changes. Evidence shows that centriole conversion is not a passive process. These findings highlight the importance of understanding regulatory mechanisms.

Conclusions:

The authors propose that centriole regulation is essential for cell function. Their synthesis suggests that centriole state changes are controlled by molecular signals. The findings indicate that defects in these processes may promote disease. The study highlights the need for further research into regulatory pathways. The authors suggest that understanding centriole transitions could inform disease models. Their analysis supports the idea that centriole regulation is a dynamic process. The conclusions emphasize the importance of maintaining centriole function balance. These insights provide a foundation for future investigations into centriole biology.

The authors propose that molecular switches regulate centriole transitions between mitotic and ciliary roles.

Centrioles act as basal bodies to assemble primary cilia during interphase, as noted in the study.

The study suggests that centriole roles are coordinated with the cell cycle, especially during mitosis and interphase.

The authors propose that specific proteins mediate centriole state changes, as inferred from recent findings.

The study suggests that imbalances in centrosome and cilia functions may promote ciliopathies and cancer.

The authors propose that centriole regulation is essential for maintaining cell function and preventing disease.