Related Experiment Video
Updated: Aug 20, 2025
07:26
In Situ Microscopy for Real-time Determination of Single-cell Morphology in Bioprocesses
Published on: December 5, 2019
8.0K
What programs the size of animal cells?
Shixuan Liu1,2,3, Ceryl Tan1,2, Mike Tyers4
1Department of Molecular Genetics, University of Toronto, Toronto, ON, Canada.
Frontiers in Cell and Developmental Biology
|November 17, 2022
Summary
Animal cells maintain uniform size through homeostatic mechanisms, akin to a thermostat. This review explores cell size checkpoints, growth rate feedback, and the functional importance of cell size control.
Area of Science:
- Cell Biology
- Physiology
- Homeostasis
Background:
- Cellular size is a fundamental characteristic, with distinct cell types exhibiting unique sizes and high uniformity within cell types.
- Maintaining consistent cell size is crucial for proper cellular function and organismal development.
Purpose of the Study:
- To review existing literature on cell size checkpoints and homeostasis in proliferating animal cells.
- To discuss advances in understanding feedback regulation of cellular growth rate and target size determination.
- To explore the functional significance of cell size control.
Main Methods:
- Literature review of historical and recent studies on cell size regulation.
- Synthesis of findings on cell size checkpoints and feedback mechanisms.
- Discussion of molecular players and teleological aspects of cell size control.
Main Results:
- Evidence suggests homeostatic mechanisms, similar to a thermostat, regulate animal cell size.
- Cell size checkpoints and feedback regulation of growth rate are key to maintaining size uniformity.
- Molecular mechanisms underlying checkpoints and target size specification are being elucidated.
Conclusions:
- Cell size is actively maintained by sophisticated homeostatic mechanisms involving checkpoints and growth rate feedback.
- Understanding these mechanisms is vital for comprehending cellular function and potential therapeutic interventions.
- The functional importance of precise cell size control warrants further investigation.
Keywords:
cell cyclecell growthcell sizecell size checkpointcell size homeostasiscell size sensingtarget sizeMore Related Videos
08:17Probing Structural and Dynamic Properties of Trafficking Subcellular Nanostructures by Spatiotemporal Fluctuation Spectroscopy
Published on: August 16, 2021
1.9K
11:59Author Spotlight: Detection of Mitophagy in Caenorhabditis elegans and Mammalian Cells Using Organelle-Specific Dyes
Published on: May 19, 2023
2.4K
Related Concept Videos
01:22Cell Size
115.4K
Cell sizes vary widely among and within organisms. Bacterial cells range between 1-10 micrometers (μm)and are considerably smaller than most eukaryotic cells. The smallest bacteria are 0.1 μm in diameter—about a thousand times smaller than eukaryotic cells, which typically range from 10-100 μm.
Surface Area
Cells can take in nutrients and water via diffusion through the plasma membrane itself or through specific channels in the membrane. The area of the membrane surrounding...
Surface Area
Cells can take in nutrients and water via diffusion through the plasma membrane itself or through specific channels in the membrane. The area of the membrane surrounding...
115.4K
01:30Animal and Plant Cell Structure
30.5K
Animal and plant cells not only differ in their structure, function, and mode of nutrition but also in how they reproduce, specialize, and organize into complex structures.
Cell Division
Though both plant and animal cells divide by mitosis (for non-gametic cells) and meiosis (for gametic cells), they differ in the specifics of this process. Unlike animal cells, plant cells lack centrosomes — an organelle responsible for organizing the spindle fibers and segregating the chromosomes during...
Cell Division
Though both plant and animal cells divide by mitosis (for non-gametic cells) and meiosis (for gametic cells), they differ in the specifics of this process. Unlike animal cells, plant cells lack centrosomes — an organelle responsible for organizing the spindle fibers and segregating the chromosomes during...
30.5K
01:13Cell Diversity
3.4K
The concept of a cell started with microscopic observations of dead cork tissue by Robert Hooke in 1665. Hooke coined the term "cell" based on the resemblance of the small subdivisions in the cork to the rooms that monks inhabited, called cells. About ten years later, Antonie van Leeuwenhoek became the first person to observe the living and moving cells under a microscope. In the century that followed, the theory that cells represented the basic unit of life developed.
Multicellular...
Multicellular...
3.4K
01:22Enlargement of the Plasma Membrane
2.0K
Cell division and enlargement are processes that require precise control. The control ensures that cell division cannot proceed unless the cell has grown to a specific size. A spherical, dividing cell requires an approximately 1.6X increase in its surface area to double its volume. The secretory pathway also has a significant role in cell membrane enlargement. Secretory vesicles that bud off from the Golgi apparatus and later fuse with the plasma membrane during exocytosis are a major source of...
2.0K
01:28Prokaryotic vs. Eukaryotic Cells
295
Prokaryotic and eukaryotic cells represent two fundamental types of cellular organization, differing significantly in structure, complexity, and function. These distinctions underpin the biological diversity seen across domains of life.Prokaryotic Cell CharacteristicsProkaryotic cells, exemplified by bacteria and archaea, are structurally simple and lack membrane-bound organelles, including a nucleus. Their genetic material consists of a single, circular DNA molecule in the nucleoid region,...
295
02:36Cells Coordinate Growth and Proliferation
4.6K
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,...
4.6K