Cited by 1,072Neurogenesis and neuroplasticity mechanismsMemory and Neural MechanismsNeuroscience and Neuropharmacology Research

Neurogenesis in the adult hippocampus

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Kempermann, Gerd, Song, Hongjun, Gage, Fred H.·2015·Cold Spring Harbor Perspectives in Biology

Abstract

Of the neurogenic zones in the adult brain, adult hippocampal neurogenesis attracts the most attention, because it is involved in higher cognitive function, most notably memory processes, and certain affective behaviors.Adult hippocampal neurogenesis is also found in humans at a considerable level and appears to contribute significantly to hippocampal plasticity across the life span, because it is regulated by activity.Adult hippocampal neurogenesis generates new excitatory granule cells in the dentate gyrus, whose axons form the mossy fiber tract that links the dentate gyrus to CA3.It originates from a population of radial glia-like precursor cells (type 1 cells) that have astrocytic properties, express markers of neural stem cells and divide rarely.They give rise to intermediate progenitor cells with first glial (type 2a) and then neuronal (type 2b) phenotype.Through a migratory neuroblast-like stage (type 3), the newborn, lineage-committed cells exit the cell cycle and enter a maturation stage, during which they extend their dendrites into a the molecular layer and their axon to CA3.They go through a period of several weeks, during which they show increased synaptic plasticity, before finally becoming indistinguishable from the older granule cells. Because it has turned out that adult neuro- genesis not only exists in the human hippocampus but even seems to be restricted to it (see Spalding et al. 2013;Bergmann et al. 2015), public and scientific attention to the phenomenon is soaring.In PubMed, search results for "adult neurogenesis" and "hippocampus" outnumber those for "adult neurogenesis" and "olfactory bulb" or "subventricular" by 3:1.This is no reason to neglect research on adult neurogenesis in the olfactory system, which is a necessary part of any holistic view on adult neuro-genesis, but reason enough to ask for the motifs behind this interest.The answer, presumably, is "function."Adult hippocampal neurogenesis adds particular functionality to the mammalian hippocampus and presumably is involved in cognitive functions that we consider to be essential for humans.There is a price to pay for this type of plasticity.Adult neurogenesis is a complex multistep process, not a simple event.This review deals with the description of this process and the restriction points at which regulation occurs.

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Crossref · 10.1101/cshperspect.a018812

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  • The dentate gyrus gives rise to excitatory DG granule cells, whereas the SVZ produces migrating cells that follow the RMS and differentiate into inhibitory OB granule cells in the olfactory bulb.

    “The first gives rise to the excitatory DG granule cells, whereas the second produces migrating cells that follow the RMS and in the olfactory bulb differentiate into inhibitory OB granule cells72,84,85.”

    From A high-resolution transcriptomic and spatial atlas of cell types in the whole mouse brain (2023) · cites this paper as [84]

    The Abstract (page unavailable) states that adult hippocampal neurogenesis produces excitatory granule cells in the dentate gyrus. The Precursor Cell Phase mentions an SVZ/olfactory-bulb system, but our copy does not say that SVZ-derived cells follow the RMS or differentiate into inhibitory olfactory-bulb granule cells. (LLM, conf=0.86)

    Experimental — accuracy not yet measured
  • Neurogenesis continues during adulthood in the dentate gyrus of the hippocampus and the subventricular zone, where new neurons are generated throughout life from stem cells.

    “Neurogenesis continues during adulthood in two specific neurogenic niches, the dentate gyrus of the hippocampus and the subventricular zone (SVZ) adjacent to lateral ventricles, where new neurons are generated throughout life from stem cells (Kempermann et al., 2015;Lim and Alvarez-Buylla, 2016).”
  • Reduction in PTB triggered radial glial-like cells to convert into new granular neurons through what appears to be the typical developmental process by which new hippocampal neurons mature during development and in young adult animals.

    “reduction in PTB triggered radial glial-like cells to convert into new granular neurons through what appears to be the typical developmental process by which new hippocampal neurons mature during development39 and in young adult animals40.”

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Authors
Kempermann, G., Song, H., & Gage, F. H.
Affiliations
  • Center for Regenerative Therapies Dresden (DE)
  • Johns Hopkins University (US)
  • Salk Institute for Biological Studies (US)
Venue
Cold Spring Harbor Perspectives in Biology
Published
2015-09
Volume
7
Issue
9
Pages
a018812
ISSN
1943-0264 (ISSN-L)
OpenAlex
W2115290127
Cited by
1,072
References
158
Citations by year
2026: 62 · 2025: 85 · 2024: 110 · 2023: 93 · 2022: 88 · 2021: 110 · 2020: 90 · 2019: 76 · 2018: 83 · 2017: 89 · 2016: 71 · 2015: 17 · 2014: 10 · 2013: 13 · 2012: 11
Type
posted content
Language
en
Open access
Locations
  • Cold Spring Harbor Perspectives in Biology (publishedVersion)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • DZNE Pub (submittedVersion)
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 hippocampal neurogenesis, dentate gyrus granule cells, intermediate progenitor cells, neuronal maturation, synaptic plasticity, hippocampal plasticity, memory, emotional behavior, olfactory bulb neurogenesis, subventricular zone, neural stem cells, activity-dependent regulation
MeSH terms
Cell Survival, Hippocampus, Humans, Mitosis, Neurons, Neurogenesis

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