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Updated: May 8, 2026

Osmotic Avoidance in Caenorhabditis elegans: Synaptic Function of Two Genes, Orthologues of Human NRXN1 and NLGN1, as Candidates for Autism

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Published on: December 11, 2009

mTORC2 disruption reprograms nutrient-driven behavioral adaptations in C. elegans.

Simran Motwani¹, Somya Bhandari¹, Arnab Mukhopadhyay¹

¹Molecular Aging Laboratory, National Institute of Immunology, New Delhi, Delhi, India.

Micropublication Biology

|September 29, 2025

Summary

The mTORC2 pathway, disrupted in rict-1 mutants, is crucial for how Caenorhabditis elegans remembers food quality. Impaired dietary memory affects their foraging behavior and food preferences.

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Area of Science:

Behavioral neuroscience
Metabolic pathways
Genetics

Background:

Animals adjust foraging based on food availability and quality.
The mechanistic target of rapamycin complex 2 (mTORC2) pathway regulates cellular functions.
Understanding mTORC2's role in behavioral adaptation is crucial.

Purpose of the Study:

To investigate the impact of mTORC2 disruption on foraging behavior in Caenorhabditis elegans.
To characterize the food preference and dwelling behavior of rict-1 mutants.
To determine if mTORC2 signaling influences dietary memory.

Main Methods:

Utilized Caenorhabditis elegans as a model organism.
Generated mutants for the rict-1 gene, a core component of mTORC2.
Assessed food preference and dwelling behavior across diets of varying nutritional value.

Main Results:

rict-1 mutants exhibited altered behavioral responses to different diets.
Mutants showed impaired ability to adapt foraging based on prior dietary experience.
Evidence suggests a disruption in dietary memory in rict-1 mutants.

Conclusions:

mTORC2 signaling plays a vital role in integrating nutritional history with current foraging decisions.
Disruption of mTORC2 impairs context-dependent feeding behavior.
This study provides insights into metabolic regulation of adaptive feeding behaviors.