Cited by 409Tactile and Sensory InteractionsPain Mechanisms and TreatmentsNeuroscience and Neuropharmacology Research

The Cellular and Synaptic Architecture of the Mechanosensory Dorsal Horn

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Abraira, Victoria E., Kuehn, Emily D., Chirila, Anda M., Springel, Mark W., Toliver, Alexis A., Zimmerman, Amanda L., Orefice, Lauren L., Boyle, Kieran A. +16 more·2017·Cell

Abstract

The deep dorsal horn is a poorly characterized spinal cord region implicated in processing low-threshold mechanoreceptor (LTMR) information. We report an array of mouse genetic tools for defining neuronal components and functions of the dorsal horn LTMR-recipient zone (LTMR-RZ), a role for LTMR-RZ processing in tactile perception, and the basic logic of LTMR-RZ organization. We found an unexpectedly high degree of neuronal diversity in the LTMR-RZ: seven excitatory and four inhibitory subtypes of interneurons exhibiting unique morphological, physiological, and synaptic properties. Remarkably, LTMRs form synapses on between four and 11 LTMR-RZ interneuron subtypes, while each LTMR-RZ interneuron subtype samples inputs from at least one to three LTMR classes, as well as spinal cord interneurons and corticospinal neurons. Thus, the LTMR-RZ is a somatosensory processing region endowed with a neuronal complexity that rivals the retina and functions to pattern the activity of ascending touch pathways that underlie tactile perception.

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Crossref · 10.1016/j.cell.2016.12.010

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  • The Rorb and Adamts5 dorsal inhibitory family comprised Inhib-1, Inhib-2, Inhib-3, Inhib-4, and Inhib-5, with markers of neurons involved in dampening of dynamic touch.

    “The Rorb and Adamts5 dorsal, the inhibitory family was comprised of Inhib-1, Inhib-2, Inhib-3, Inhib-4, and Inhib-5, with markers of neurons involved in the dampening of dynamic touch48,68,69.”
  • The Maf dorsal excitatory family comprised Excit-5, Excit-6, and Excit-7, which expressed markers of neurons involved in light touch.

    “The Maf dorsal, the excitatory family was comprised of Excit-5, Excit-6, and Excit-7 which expressed markers of neurons involved in light touch46,48,50,56,57.”
  • The Prkcg dorsal excitatory family comprised Excit-3 and Excit-4 and likely corresponded to neurons involved in light static touch and allodynic pain in pathological situations.

    “The Prkcg dorsal, excitatory family was comprised of Excit-3 and Excit-4 and likely corresponded to neurons involved in light static touch and allodynic pain in pathological situations46,48–56.”

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Authors
Abraira, V. E., Kuehn, E. D., Chirila, A. M., Springel, M. W., Toliver, A. A., Zimmerman, A. L., Orefice, L. L., Boyle, K. A., Bai, L., Song, B. J., Bashista, K. A., O'Neill, T. G., Zhuo, J., Tsan, C., Hoynoski, J., Rutlin, M., Kus, L., Niederkofler, V., Watanabe, M., Dymecki, S. M., Nelson, S. B., Heintz, N., Hughes, D. I., & Ginty, D. D.
Affiliations
  • Howard Hughes Medical Institute (US)
  • University of Glasgow (GB)
  • Brandeis University (US)
  • Harvard University (US)
  • Hokkaido University (JP)
Corresponding author
Ginty, David D.
Venue
Cell
Publisher
Elsevier BV
Published
2017-01
Volume
168
Issue
1-2
Pages
295-310.e19
ISSN
0092-8674 (ISSN-L)
OpenAlex
W2561827989
Cited by
409
References
58
Citations by year
2026: 25 · 2025: 53 · 2024: 44 · 2023: 46 · 2022: 53 · 2021: 50 · 2020: 57 · 2019: 38 · 2018: 34 · 2017: 9
FWCI
17.18
Type
journal article
Language
en
Open access
Locations
  • Cell (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • ENLIGHTEN (Jurnal Bimbingan dan Konseling Islam) (acceptedVersion)
  • Rutgers University Community Repository (Rutgers University) (submittedVersion)
Funders
  • NINDS P30 Core Center (NS072030)
  • Goldenson Postdoctoral Fellowship (F32 NS077836-01)
  • NIDA (1-P30-DA-035756)
  • Wellcome Trust (102645)
  • BBSRC (J000620)
  • NIH (DE022750, NS97344)
  • Edward R. and Anne G. Lefler Center
Topics
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Tactile and Sensory Interactions
  • Health Sciences › Medicine › Physiology › Pain Mechanisms and Treatments
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
Keywords
low-threshold mechanoreceptors, spinal interneurons, neuronal heterogeneity, synaptic connectivity, tactile perception, somatosensory processing, corticospinal neurons, interneuron subtypes
MeSH terms
Animals, Axons, Dendrites, Interneurons, Mechanoreceptors, Molecular Biology, Neural Pathways, Spinal Cord, Synapses, Mice, Touch Perception

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