How neurons sense bacteria in the gut
A new study from MIT's Picower Institute explores how neurons in the nematode C. elegans detect specific bacterial components in the gut, revealing that polysaccharides like peptidoglycan activate a key neuron involved in feeding behavior. The research identifies the precise chemical signals that trigger neural responses, offering insight into how the nervous system interacts with the microbiome. These findings may help uncover similar mechanisms in humans, where related ion channels exist and gut bacteria are linked to neurological conditions.
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Neural interaction with bacteria has important effects on animal brains. A new study investigates how neurons sense bacteria by revealing, in nematodes, the bacterial signals that a key neuron detects. David Orenstein | The Picower Institute for Learning and Memory Publication Date: April 30, 2026 Press Inquiries Press Contact: David Orenstein Email: [email protected] Phone: 617-324-2079 Picower Institute Close Caption: Researchers curious about how neurons detect bacteria used the C. elegans worm as a model because it has bacteria-sensing neurons in its alimentary canal. Here, C. elegans worms make their way through media laced with the red-hued bacterium Serratia marcescens.
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Excerpt limited to ~120 words for fair-use compliance. The full article is at MIT News.