Overview

This protocol describes a microfluidic-based method for time-lapse imaging of C. elegans throughout post-embryonic development. It addresses challenges in high-resolution in vivo observation while maintaining animal viability.

Key Study Components

Area of Science

Developmental Biology
Imaging Techniques
Microfluidics

Background

C. elegans is a widely used model organism in developmental biology.
High-resolution imaging requires immobilization, which can affect viability.
Existing methods have limitations in observing dynamic processes in vivo.
This protocol provides a solution for long-term imaging of C. elegans.

Purpose of Study

To develop a method for long-term imaging of C. elegans.
To facilitate the study of dynamic developmental processes in vivo.
To improve the observation of organ formation and cell divisions.

Methods Used

Microfluidic device setup and calibration.
Injection of C. elegans into the microfluidic channels.
Time-lapse imaging using various microscopy modalities.
Image processing techniques for enhanced clarity.

Main Results

Successful imaging of C. elegans from early L1 to mid-L2 stages.
Observation of vulva precursor cell divisions and organ formation.
Consistent cell division timings across multiple animals.
Steady gonad length increase during larval stages.

Conclusions

The microfluidic method enables high-quality imaging of C. elegans.
It allows for detailed studies of developmental processes in real-time.
This approach has been adopted by various labs for diverse research applications.

Frequently Asked Questions

What is the main advantage of using microfluidics for C. elegans imaging?

Microfluidics allows for long-term imaging while maintaining the viability of C. elegans, enabling detailed observation of developmental processes.

What imaging techniques can be used with this protocol?

The protocol supports brightfield, epifluorescence, spinning disc confocal, and super resolution microscopy techniques.

How does the protocol ensure high imaging quality?

High imaging quality is maintained through the use of a 170-micrometer thick cover glass and careful device calibration.

What developmental stages of C. elegans can be observed using this method?

The method allows observation from early L1 to adulthood, capturing key developmental events.

Can this method be adapted for other organisms?

While this protocol is designed for C. elegans, the microfluidic approach may be adapted for other small organisms with similar imaging needs.

Institution - University Zürich

Articles Published in JoVE