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Updated: Sep 26, 2025

Visualization of Caenorhabditis elegans Cuticular Structures Using the Lipophilic Vital Dye DiI

Visualization of Caenorhabditis elegans Cuticular Structures Using the Lipophilic Vital Dye DiI

Published on: January 30, 2012

Changes in body shape implicate cuticle stretch in C. elegans growth control.

Joy Nyaanga¹, Christina Goss², Gaotian Zhang³

¹Department of Molecular Biosciences, Northwestern University, Evanston, IL 60208, USA; Interdisciplinary Biological Sciences Program, Northwestern University, Evanston, IL 60208, USA.

Cells & Development

|April 22, 2022

Summary

This summary is machine-generated.

Organism size is controlled by sensing and adjusting growth. In roundworms, physical constraints like cuticle stretch may signal developmental timing, influencing growth rate and body shape during development.

Keywords:

C. elegans Developmental growth Growth control

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Published on: July 30, 2018

Area of Science:

Developmental Biology
Quantitative Biology
Biophysics

Background:

Organism size is determined by growth control mechanisms that sense and adjust growth during development.
Multicellular organisms require integrated control across tissues to achieve adult size and shape.
Single-cell studies show size homeostasis employs distinct control methods.

Purpose of the Study:

To investigate how growth control integrates across tissues in multicellular organisms.
To identify physical mechanisms influencing developmental timing and growth rate.
To model the relationship between physical constraints and changes in body shape during development.

Main Methods:

Utilized Caenorhabditis elegans as a model organism for scalable growth measurements.
Collected precise growth data from thousands of individuals across a developmental time course.
Quantified animal size, shape, and feeding behavior; modeled physical mechanisms of cuticle stretch.

Main Results:

Observed constant body volume with changing aspect ratio during transitions between developmental stages.
Developed a physical model where cuticle stretch constraints predict observed changes in body shape.
Data-consistent model suggests physical constraints influence developmental timing and growth rate.

Conclusions:

Physical constraints, such as cuticle stretch, play a significant role in regulating C. elegans development.
Cuticle stretch sensing may act as a trigger for larval-stage transitions.
This study provides a framework for understanding how physical forces influence developmental timing and organismal growth.