Cited by 352Neurogenesis and neuroplasticity mechanismsMemory and Neural MechanismsNeuroscience and Neuropharmacology Research

Distinct contribution of adult-born hippocampal granule cells to context encoding

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Danielson, Nathan B., Kaifosh, Patrick, Zaremba, Jeffrey D., Lovett-Barron, Matthew, Tsai, Joseph, Denny, Christine A., Balough, Elizabeth M., Goldberg, Alexander R. +4 more·2016·Neuron

Abstract

Adult-born granule cells (abGCs) have been implicated in cognition and mood; however, it remains unknown how these cells behave in vivo. Here, we have used two-photon calcium imaging to monitor the activity of young abGCs in awake behaving mice. We find that young adult-born neurons fire at a higher rate in vivo but paradoxically exhibit less spatial tuning than their mature counterparts. When presented with different contexts, mature granule cells underwent robust remapping of their spatial representations, and the few spatially tuned adult-born cells remapped to a similar degree. We next used optogenetic silencing to confirm the direct involvement of abGCs in context encoding and discrimination, consistent with their proposed role in pattern separation. These results provide the first in vivo characterization of abGCs and reveal their participation in the encoding of novel information.

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Crossref · 10.1016/j.neuron.2016.02.019

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  • New neurons participate in pattern separation, the process of making similar neural inputs distinct.

    “Furthermore, new neurons, presumably through their unique electrophysiological properties and sparse connections to CA3 neurons (Amaral et al., 2007), have been found to participate in pattern separation (Clelland et al., 2009; Danielson et al., 2016; Sahay et al., 2011), the process of making similar neural inputs distinct.”

    From Adult neurogenesis, glia, and the extracellular matrix (2019) · cites this paper as Danielson et al., 2016

  • Elimination or optogenetic silencing of adult-born neurons impairs pattern separation-like behaviors, while transgenic increases in adult neurogenesis enhance the ability of mice to distinguish between highly similar contexts.

    “Elimination or optogenetic silencing of adult-born neurons impairs pattern separation-like behaviors (Clelland et al., 2009; Danielson et al., 2016), while transgenic increases in adult neurogenesis enhance the ability of mice to distinguish between highly similar contexts (Sahay et al., 2011).”

    From Adult neurogenesis, glia, and the extracellular matrix (2019) · cites this paper as Danielson et al., 2016

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Authors
Danielson, N. B., Kaifosh, P., Zaremba, J. D., Lovett-Barron, M., Tsai, J., Denny, C. A., Balough, E. M., Goldberg, A. R., Drew, L. J., Hen, R., Losonczy, A., & Kheirbek, M. A.
Affiliations
  • Columbia University (US)
  • New York State Psychiatric Institute (US)
  • University of California, San Francisco (US)
Corresponding author
Losonczy, Attila
Venue
Neuron
Publisher
Elsevier BV
Published
2016-04
Volume
90
Issue
1
Pages
101-112
ISSN
0896-6273 (ISSN-L)
OpenAlex
W2293303303
Cited by
352
References
62
Citations by year
2026: 20 · 2025: 28 · 2024: 34 · 2023: 27 · 2022: 26 · 2021: 35 · 2020: 46 · 2019: 39 · 2018: 37 · 2017: 38 · 2016: 21 · 2015: 1
FWCI
23.01
Type
journal article
Language
en
Open access
Locations
  • Neuron (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
  • eScholarship (California Digital Library) (submittedVersion)
Funders
  • National Institute on Aging (R01AG043688)
  • National Institute of Mental Health (R37MH068542, R01MH083862, K01MH099371, T32MH015174, R01MH100631)
  • National Institute of Neurological Disorders and Stroke (U01NS090583, R01NS094668, F30NS090819)
Topics
  • Life Sciences › Neuroscience › Developmental Neuroscience › Neurogenesis and neuroplasticity mechanisms
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Memory and Neural Mechanisms
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
Keywords
adult neurogenesis, hippocampal granule cells, context encoding, spatial representation, pattern separation, spatial tuning, spatial remapping, optogenetic silencing, two-photon calcium imaging, awake behaving mice, context discrimination
MeSH terms
Animals, Calcium, Cell Differentiation, Hippocampus, Neurons, Dentate Gyrus, Microscopy, Fluorescence, Multiphoton, Mice, Neurogenesis, Optogenetics

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