Cited by 37Neurobiology and Insect Physiology ResearchIon Channels and ReceptorsGenetics, Aging, and Longevity in Model Organisms

Polymodal Responses in C. elegans Phasmid Neurons Rely on Multiple Intracellular and Intercellular Signaling Pathways

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Zou, Wenjuan, Cheng, Hankui, Li, Shitian, Yue, Xiaomin, Xue, Yadan, Chen, Sixi, Kang, Lijun·2017·Scientific Reports

Abstract

Animals utilize specialized sensory neurons enabling the detection of a wide range of environmental stimuli from the presence of toxic chemicals to that of touch. However, how these neurons discriminate between different kinds of stimuli remains poorly understood. By combining in vivo calcium imaging and molecular genetic manipulation, here we investigate the response patterns and the underlying mechanisms of the C. elegans phasmid neurons PHA/PHB to a variety of sensory stimuli. Our observations demonstrate that PHA/PHB neurons are polymodal sensory neurons which sense harmful chemicals, hyperosmotic solutions and mechanical stimulation. A repulsive concentration of IAA induces calcium elevations in PHA/PHB and both OSM-9 and TAX-4 are essential for IAA-sensing in PHA/PHB. Nevertheless, the PHA/PHB neurons are inhibited by copper and post-synaptically activated by copper removal. Neuropeptide is likely involved in copper removal-induced calcium elevations in PHA/PHB. Furthermore, mechanical stimulation activates PHA/PHB in an OSM-9-dependent manner. Our work demonstrates how PHA/PHB neurons respond to multiple environmental stimuli and lays a foundation for the further understanding of the mechanisms of polymodal signaling, such as nociception, in more complex organisms.

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  • C. elegans sensory neurons usually respond to several stimuli, so sensory integration starts within the sensory neurons.

    “As the sensory neurons of C. elegans generally respond to multiple stimuli, sensory integration begins within the sensory neurons themselves25,26.”

    From Whole-animal connectomes of both Caenorhabditis elegans sexes (2019) · cites this paper as [25]

    The Abstract reports that C. elegans PHA/PHB neurons respond to multiple stimuli and use intracellular and intercellular pathways to process them; the Discussion describes encoding and discrimination in those neurons. This supports sensory processing within particular sensory neurons, but the paper does not establish that C. elegans sensory neurons generally respond to multiple stimuli or that integration always begins within them. (LLM, conf=0.82)

    Experimental — accuracy not yet measured

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Research works printed but not linked: 26

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Authors
Zou, W., Cheng, H., Li, S., Yue, X., Xue, Y., Chen, S., & Kang, L.
Affiliations
  • Zhejiang University (CN)
  • Fuzhou University (CN)
Corresponding author
  • Chen, Sixi
  • Kang, Lijun
Venue
Scientific Reports
Published
2017-02-14
Volume
7
Issue
1
Pages
42295-42295
ISSN
2045-2322 (ISSN-L)
OpenAlex
W2588937528
Cited by
37
References
2
Citations by year
2025: 2 · 2024: 3 · 2023: 2 · 2022: 4 · 2021: 6 · 2020: 5 · 2019: 4 · 2018: 8 · 2017: 3
FWCI
2.68
Type
journal article
Language
en
Open access
Locations
  • Scientific Reports (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
Funders
National Institutes of Health (OD010440, P40OD010440)
Topics
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neurobiology and Insect Physiology Research
  • Life Sciences › Neuroscience › Sensory Systems › Ion Channels and Receptors
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Aging › Genetics, Aging, and Longevity in Model Organisms
Keywords
Caenorhabditis elegans, osm-9, copper removal, neuropeptide signaling, mechanical stimulation, nociception, calcium imaging, sensory discrimination
MeSH terms
Animals, Calcium, Copper, Extracellular Space, Ion Channels, Nerve Tissue Proteins, Neurons, Odorants, Physical Stimulation, Sensory Receptor Cells, Touch, Signal Transduction, Caenorhabditis elegans, Caenorhabditis elegans Proteins, Intracellular Space, TRPV Cation Channels

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