The C. elegans Observatory: High-throughput exploration of behavioral aging

Area of Science:

• Gerontology and developmental biology
• Biotechnology and bioengineering
• Genetics and molecular biology

Background:

• Aging exhibits commonalities across organisms, suggesting shared underlying mechanisms.
• Model organisms like C. elegans have revealed cellular systems impacting lifespan, but comprehensive analysis is limited by technical challenges.
• Discovering novel aging components requires scalable experimental approaches.

Purpose of the Study:

• To develop an automated system, the Caenorhabditis elegans Observatory, for high-throughput behavioral monitoring of aging.
• To enable large-scale genetic screens for identifying genes that modulate aging trajectories.
• To facilitate the discovery and analysis of new components within the aging program.

Main Methods:

• The Caenorhabditis elegans Observatory uses custom hardware and software for automated imaging and motion control of group-housed worms.
• The system processes high-speed images to capture behavioral metrics and continuously computes summary statistics.
• RNA interference (RNAi) was used to validate known gene functions and identify novel aging phenotypes.

Main Results:

• The Observatory significantly reduces manual effort (by two orders of magnitude) for behavioral tracking.
• Experiments confirmed expected phenotypes for known aging genes (e.g., daf-2(RNAi), hsf-1(RNAi)).
• Novel phenotypes were identified for tank-1(RNAi) (extended youthful vigor) and cdc-42(RNAi) (progeric).

Conclusions:

• The Caenorhabditis elegans Observatory provides a scalable platform for aging research.
• This automated system facilitates whole-genome screens to uncover new aging-related genes.
• The Observatory significantly enhances the ability to discover and analyze components of the aging program.