Cited by 91Neurogenesis and neuroplasticity mechanismsNeuroscience and Neuropharmacology ResearchTactile and Sensory Interactions

Layer I Interneurons Sharpen Sensory Maps during Neonatal Development

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Che, Alicia, Babij, Rachel, Iannone, Andrew F., Fetcho, Robert N., Ferrer, Monica, Liston, Conor, Fishell, Gord, De Marco García, Natalia V.·2018·Neuron

Abstract

The neonatal mammal faces an array of sensory stimuli when diverse neuronal types have yet to form sensory maps. How these inputs interact with intrinsic neuronal activity to facilitate circuit assembly is not well understood. By using longitudinal calcium imaging in unanesthetized mouse pups, we show that layer I (LI) interneurons, delineated by co-expression of the 5HT3a serotonin receptor (5HT3aR) and reelin (Re), display spontaneous calcium transients with the highest degree of synchrony among cell types present in the superficial barrel cortex at postnatal day 6 (P6). 5HT3aR Re interneurons are activated by whisker stimulation during this period, and sensory deprivation induces decorrelation of their activity. Moreover, attenuation of thalamic inputs through knockdown of NMDA receptors (NMDARs) in these interneurons results in expansion of whisker responses, aberrant barrel map formation, and deficits in whisker-dependent behavior. These results indicate that recruitment of specific interneuron types during development is critical for adult somatosensory function. VIDEO ABSTRACT.

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Crossref · 10.1016/j.neuron.2018.06.002

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  • Inhibition is likely stronger on weakly activated layer 2/3 pyramidal cells above septa than above barrels, which would help form barrel columns tuned to individual whiskers.

    “Inhibition is likely more prominent on weakly activated layer 2/3 pyramidal cells immediately above septal regions than in layer 2/3 pyramidal cells above the barrels (where VPM axons concentrate), which would contribute to the formation of barrel columns tuned to individual whiskers (Che et al., 2018).”

    From Development and Functional Diversification of Cortical Interneurons (2018) · cites this paper as Che et al., 2018

  • Neurogliaform cell activity during this period inhibits layer 2/3 pyramidal cell responses during whisker stimulation.

    “The activity of neurogliaform cells during this period inhibits the response of layer 2/3 pyramidal cells during whisker stimulation.”

    From Development and Functional Diversification of Cortical Interneurons (2018) · cites this paper as Che et al., 2018

  • During the first postnatal week, activity of layer 1 5HT3aR+ interneurons, mostly neurogliaform cells, in the barrel field is highly synchronized by VPM thalamic inputs and requires NMDAR function.

    “During the first week of postnatal development, the activity of layer 1 5HT3aR+ interneurons (mostly neurogliaform cells) in the barrel field is highly synchronized by inputs from the somatosensory thalamus (ventroposteromedial thalamic nucleus, VPM), a process that requires NMDAR function (Che et al., 2018).”

    From Development and Functional Diversification of Cortical Interneurons (2018) · cites this paper as Che et al., 2018

  • Activation of layer 1 neurogliaform cells by thalamic input is transient, like the temporary recruitment of deep layer SST+ interneurons.

    “Intriguingly, the activation of layer 1 neurogliaform cells by thalamic input is transient, much like the temporary recruitment of deep layer SST+ interneurons (Che et al., 2018).”

    From Development and Functional Diversification of Cortical Interneurons (2018) · cites this paper as Che et al., 2018

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Authors
Che, A., Babij, R., Iannone, A. F., Fetcho, R. N., Ferrer, M., Liston, C., Fishell, G., & De Marco García, N. V.
Affiliations
  • Weill Cornell Medicine (US)
  • Cornell University (US)
  • Harvard University (US)
Venue
Neuron
Publisher
Elsevier BV
Published
2018-07
Volume
99
Issue
1
Pages
98-116.e7
ISSN
0896-6273 (ISSN-L)
OpenAlex
W2809648019
Cited by
91
References
96
Citations by year
2026: 4 · 2025: 13 · 2024: 13 · 2023: 12 · 2022: 16 · 2021: 15 · 2020: 13 · 2019: 4 · 2018: 1
FWCI
3.04
Type
journal article
Language
en
Open access
Locations
  • Neuron (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • NIH
  • NIMH (1R01MH110553-01, 1R01 MH109685)
  • Citizens United for Research in Epilepsy
  • Leon Levy Foundation
  • Frueauff Foundation
  • NIGMS (T32GM007739)
Topics
  • Life Sciences › Neuroscience › Developmental Neuroscience › Neurogenesis and neuroplasticity mechanisms
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Tactile and Sensory Interactions
Keywords
barrel cortex, neonatal development, reelin, spontaneous calcium transients, neuronal synchronization, whisker stimulation, sensory deprivation, thalamic input, somatosensory development, mouse pups
MeSH terms
Reelin Protein, Animals, Animals, Newborn, Calcium, Cerebral Cortex, Interneurons, Nerve Tissue Proteins, Neural Pathways, Physical Stimulation, Sensory Deprivation, Serine Endopeptidases, Somatosensory Cortex, Touch, Vibrissae, Cell Adhesion Molecules, Neuronal, Receptors, N-Methyl-D-Aspartate, Extracellular Matrix Proteins, Pyramidal Cells, Patch-Clamp Techniques, Receptors, Serotonin, 5-HT3, Mice, Gene Knockdown Techniques, Optogenetics

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