EPISODE 13: Hit and Run – How C. elegans Escapes Danger with Tyramine Power

EPISODE 13: Hit and Run – How C. elegans Escapes Danger with Tyramine Power

How does a tiny worm coordinate complex escape behaviour? In this episode, we dive into how the neurotransmitter tyramine triggers rapid, coordinated escape in Caenorhabditis elegans. Researchers uncovered that tyramine activates a newly discovered tyramine-gated chloride channel, LGC-55, which suppresses head movements and promotes sustained backward locomotion after anterior touch.


We explore:


  • How tyramine acts as a classical inhibitory neurotransmitter in C. elegans

  • The critical role of LGC-55 in controlling head movement and reversal length during escapes

  • Why tyramine’s control of multiple motor outputs is vital to escaping predatory fungi

  • How tyramine reshapes neural network dynamics to bias the worm toward rapid retreat



📖 Based on the research article:

“A Tyramine-Gated Chloride Channel Coordinates Distinct Motor Programs of a Caenorhabditis elegans Escape Response”

Jennifer K. Pirri, Adam D. McPherson, Jamie L. Donnelly, Michael M. Francis & Mark J. Alkema.

Published in Neuron (2009).

🔗 https://doi.org/10.1016/j.neuron.2009.04.013



🎧 Subscribe to the WoRM Podcast for more on neuromodulation, escape circuits, and whole-organism behaviour!


This podcast is generated with artificial intelligence and curated by Veeren. If you’d like your publication featured on the show, please get in touch.


📩 More info:

🔗 ⁠www.veerenchauhan.com⁠

📧 veeren.chauhan@nottingham.ac.uk

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Avsnitt(53)

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