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@ARTICLE{Nebeling:256466,
author = {Nebeling, Felix Christopher and Poll, Stefanie and Justus,
Lena Christine and Steffen, Julia and Keppler, Kevin and
Mittag, Manuel and Fuhrmann, Martin},
title = {{M}icroglial motility is modulated by neuronal activity and
correlates with dendritic spine plasticity in the
hippocampus of awake mice.},
journal = {eLife},
volume = {12},
issn = {2050-084X},
address = {Cambridge},
publisher = {eLife Sciences Publications},
reportid = {DZNE-2023-00328},
pages = {e83176},
year = {2023},
note = {CC BY},
abstract = {Microglia, the resident immune cells of the brain, play a
complex role in health and disease. They actively survey the
brain parenchyma by physically interacting with other cells
and structurally shaping the brain. Yet, the mechanisms
underlying microglial motility and significance for synapse
stability, especially in the hippocampus during adulthood,
remain widely unresolved. Here, we investigated the effect
of neuronal activity on microglial motility and the
implications for the formation and survival of dendritic
spines on hippocampal CA1 neurons in vivo. We used
repetitive two-photon in vivo imaging in the hippocampus of
awake and anesthetized mice to simultaneously study the
motility of microglia and their interaction with dendritic
spines. We found that CA3 to CA1 input is sufficient to
modulate microglial process motility. Simultaneously, more
dendritic spines emerged in mice after awake compared to
anesthetized imaging. Interestingly, the rate of microglial
contacts with individual dendritic spines and dendrites was
associated with the stability, removal, and emergence of
dendritic spines. These results suggest that microglia might
sense neuronal activity via neurotransmitter release and
actively participate in synaptic rewiring of the hippocampal
neural network during adulthood. Further, this study has
profound relevance for hippocampal learning and memory
processes.},
keywords = {Mice / Animals / Microglia: physiology / Dendritic Spines:
physiology / Wakefulness / Hippocampus: physiology / Neurons
/ Neuronal Plasticity: physiology / chemogenetics (Other) /
dendritic spines (Other) / hippocampus (Other) / microglia
(Other) / mouse (Other) / neuroscience (Other) / two-photon
(Other)},
cin = {AG Fuhrmann / LMF},
ddc = {600},
cid = {I:(DE-2719)1011004 / I:(DE-2719)1040180},
pnm = {352 - Disease Mechanisms (POF4-352)},
pid = {G:(DE-HGF)POF4-352},
experiment = {EXP:(DE-2719)LMF-20190308},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:36749020},
pmc = {pmc:PMC9946443},
doi = {10.7554/eLife.83176},
url = {https://pub.dzne.de/record/256466},
}