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Related Concept Videos

The Cell Cycle Control System01:28

The Cell Cycle Control System

The cell cycle regulation directs how a cell proceeds from one phase to the next and begins mitosis. The cell cycle control system includes intracellular regulatory molecules and external triggers. They provide "stop" or "advance" signals and operate at specific cell cycle stages termed checkpoints to ensure that a particular process is completed before the cell advances to the next phase.
Cyclins and cyclin-dependent kinases (Cdks) are the primary cell cycle regulators and function at the cell...
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

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...
Cells Coordinate Growth and Proliferation02:36

Cells Coordinate Growth and Proliferation

Cell size is a significant factor impacting cellular design, function, and fitness. There exists some internal coordination by which cells double their masses before division, thus, achieving homeostasis. Coordination between cell growth and proliferation depends on the checkpoints in between cell cycle phases. Loss of coordination or failure in the checkpoint mechanism can drive the cell to uncontrolled growth and loss of cellular function. Like dividing cells that coordinate cellular growth,...
Cells Coordinate Growth and Proliferation02:36

Cells Coordinate Growth and Proliferation

Cell size is a significant factor impacting cellular design, function, and fitness. There exists some internal coordination by which cells double their masses before division, thus, achieving homeostasis. Coordination between cell growth and proliferation depends on the checkpoints in between cell cycle phases. Loss of coordination or failure in the checkpoint mechanism can drive the cell to uncontrolled growth and loss of cellular function. Like dividing cells that coordinate cellular growth,...
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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Temporal Tracking of Cell Cycle Progression Using Flow Cytometry without the Need for Synchronization
08:52

Temporal Tracking of Cell Cycle Progression Using Flow Cytometry without the Need for Synchronization

Published on: August 16, 2015

Changing gears in the cell cycle: histoblasts and beyond.

Nikolay Ninov1, Enrique Martín-Blanco

  • 1Instituto de Biología Molecular de Barcelona, Consejo Superior de Investigaciones Científicas, Parc Cientific de Barcelona, Barcelona, Spain.

Fly
|November 26, 2009
PubMed
Summary

Researchers uncovered an internal logic controlling cell cycle transitions in Drosophila histoblasts. This finding offers a new paradigm for studying cell proliferation in stem cells, cancer, and developmental biology.

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Area of Science:

  • Cell Biology
  • Developmental Biology
  • Genetics

Background:

  • Cell cycle control mechanisms are known, but triggers for proliferation and division speed regulation remain unclear.
  • Stem cells, tumor cells, and regenerative tissues exhibit complex cell division dynamics.
  • Drosophila abdominal morphogenesis provides a precise model for studying cell proliferation transitions.

Purpose of the Study:

  • To investigate the mechanisms regulating cell cycle transitions in response to stimuli.
  • To understand how cell division speed is modulated in stem-like cells.
  • To establish a reference paradigm for cell proliferation studies.

Main Methods:

  • Utilized Drosophila melanogaster as a model organism.
  • Studied histoblast cell behavior during abdominal morphogenesis.
  • Analyzed cell cycle transitions from non-proliferative to invasive states.

Main Results:

  • Identified an intrinsic regulatory logic governing cell cycle progression in histoblasts.
  • Demonstrated sequential transitions in cell proliferation states.
  • Characterized the shift from non-proliferative to growing and invasive epithelium.

Conclusions:

  • The discovered internal logic in Drosophila histoblasts serves as a key model.
  • This paradigm is applicable to stem cell biology, cancer research, and developmental processes.
  • Provides insights into the regulation of cell proliferation and division speed.