Cited by 110Neuroinflammation and Neurodegeneration MechanismsNeurogenesis and neuroplasticity mechanismsNeurological Disease Mechanisms and Treatments

Microglia regulate hippocampal neurogenesis during chronic neurodegeneration

Open access
De Lucia, Chiara, Rinchon, Adeline, Olmos-Alonso, Adrian, Riecken, Kristoffer, Fehse, Boris, Boche, Delphine, Perry, V. Hugh, Gomez-Nicola, Diego·2016·Brain, Behavior, and Immunity

Abstract

Neurogenesis is altered in neurodegenerative disorders, partly regulated by inflammatory factors. We have investigated whether microglia, the innate immune brain cells, regulate hippocampal neurogenesis in neurodegeneration. Using the ME7 model of prion disease we applied gain- or loss-of CSF1R function, as means to stimulate or inhibit microglial proliferation, respectively, to dissect the contribution of these cells to neurogenesis. We found that increased hippocampal neurogenesis correlates with the expansion of the microglia population. The selective inhibition of microglial proliferation caused a reduction in neurogenesis and a restoration of normal neuronal differentiation, supporting a pro-neurogenic role for microglia. Using a gene screening strategy, we identified TGFβ as a molecule controlling the microglial pro-neurogenic response in chronic neurodegeneration, supported by loss-of-function mechanistic experiments. By the selective targeting of microglial proliferation we have been able to uncover a pro-neurogenic role for microglia in chronic neurodegeneration, suggesting promising therapeutic targets to normalise the neurogenic niche during neurodegeneration.

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Crossref · 10.1016/j.bbi.2015.11.001

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  • Microgliosis and astrocytosis were previously described in the dentate gyrus area of the hippocampus of prion disease mice.

    “Microgliosis and astrocytosis were previously described in the dentate gyrus area of the hippocampus of prion disease mice [32, 38, 39].”

    From Pharmacological modulation of TSPO in microglia/macrophages and neurons in a chronic neurodegenerative model of prion disease (2023) · cites this paper as [38]

    The Results section reports significantly increased microglial density across the dentate gyrus in ME7 prion-diseased mice, supporting microgliosis there. The passages from our copy do not report astrocytosis in that area, so they support only part of the cited sentence. No page number is available in our copy. (LLM, conf=0.88)

    Experimental — accuracy not yet measured
  • Pharmacological modulation of microglia with GW2580 reduces neuronal population.

    “pharmacological modulation of microglia with another CSF1R inhibitor, GW2580 was able to reduce neuronal population and aberrant neurogenesis and restore the normal neuronal differentiation [38].”

    From Pharmacological modulation of TSPO in microglia/macrophages and neurons in a chronic neurodegenerative model of prion disease (2023) · cites this paper as [38]

    The Results section reports that GW2580 prevented the expansion of DCX+ neuronal precursor cells in prion-diseased mice and restored baseline neurogenesis and normal neuronal differentiation. It does not establish a reduction in the overall neuronal population, as the claim states; the measured reduction concerns precursor cells. (LLM, conf=0.86)

    Experimental — accuracy not yet measured
  • CSF1R is not known to be expressed in neurons.

    “However, CSF1R is not known to be expressed in neurons [38].”

    From Pharmacological modulation of TSPO in microglia/macrophages and neurons in a chronic neurodegenerative model of prion disease (2023) · cites this paper as [38]

    The Results report no evidence of CSF1R expression in neurons using the study’s reporter mice. But the Discussion acknowledges a recent report suggesting that CSF1R is expressed and functions in neurons, so the broader statement that neuronal expression is not known omits a qualification in the source. (LLM, conf=0.86)

    Experimental — accuracy not yet measured
  • GW2580 reduces aberrant neurogenesis.

    “pharmacological modulation of microglia with another CSF1R inhibitor, GW2580 was able to reduce neuronal population and aberrant neurogenesis and restore the normal neuronal differentiation [38].”
  • GW2580 restores normal neuronal differentiation.

    “pharmacological modulation of microglia with another CSF1R inhibitor, GW2580 was able to reduce neuronal population and aberrant neurogenesis and restore the normal neuronal differentiation [38].”

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Authors
De Lucia, C., Rinchon, A., Olmos-Alonso, A., Riecken, K., Fehse, B., Boche, D., Perry, V. H., & Gomez-Nicola, D.
Affiliations
  • University of Southampton (GB)
  • University Medical Center Hamburg-Eppendorf (DE)
Venue
Brain, Behavior, and Immunity
Publisher
Elsevier BV
Published
2016-07
Volume
55
Pages
179-190
ISSN
0889-1591 (ISSN-L)
OpenAlex
W2119211366
Cited by
110
References
58
Citations by year
2026: 4 · 2025: 7 · 2024: 11 · 2023: 9 · 2022: 10 · 2021: 15 · 2020: 17 · 2019: 10 · 2018: 7 · 2017: 12 · 2016: 8
FWCI
4.81
Type
journal article
Language
en
Open access
Locations
  • Brain Behavior and Immunity (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • ePrints Soton (University of Southampton) (acceptedVersion)
  • ORBi UMONS (submittedVersion)
Funders
  • Wessex Medical Research
  • Medical Research Council (MR/K022687/1)
Topics
  • Life Sciences › Neuroscience › Neurology › Neuroinflammation and Neurodegeneration Mechanisms
  • Life Sciences › Neuroscience › Developmental Neuroscience › Neurogenesis and neuroplasticity mechanisms
  • Life Sciences › Neuroscience › Neurology › Neurological Disease Mechanisms and Treatments
Keywords
microglia, hippocampal neurogenesis, chronic neurodegeneration, prion disease, CSF1R, microglial proliferation, TGF-beta, neuronal differentiation, neurogenic niche, neuroinflammation, innate immunity
MeSH terms
Animals, Disease Models, Animal, Hippocampus, Mice, Inbred C57BL, Receptors, Granulocyte-Macrophage Colony-Stimulating Factor, Transforming Growth Factor beta, Prion Diseases, Microglia, Mice, Neurogenesis

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