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@ARTICLE{Colombo:154828,
author = {Colombo, Alessio Vittorio and Sadler, Rebecca Katie and
Llovera, Gemma and Singh, Vikramjeet and Roth, Stefan and
Heindl, Steffanie and Sebastian Monasor, Laura and
Verhoeven, Aswin and Peters, Finn and Parhizkar, Samira and
Kamp, Frits and Gomez de Aguero, Mercedes and MacPherson,
Andrew J and Winkler, Edith and Herms, Jochen and Benakis,
Corinne and Dichgans, Martin and Steiner, Harald and Giera,
Martin and Haass, Christian and Tahirovic, Sabina and Liesz,
Arthur},
title = {{M}icrobiota-derived short chain fatty acids modulate
microglia and promote {A}β plaque deposition},
journal = {eLife},
volume = {10},
issn = {2050-084X},
address = {Cambridge},
publisher = {eLife Sciences Publications},
reportid = {DZNE-2021-00406},
pages = {e59826},
year = {2021},
abstract = {Previous studies have identified a crucial role of the gut
microbiome in modifying Alzheimer’s disease (AD)
progression. However, the mechanisms of microbiome–brain
interaction in AD were so far unknown. Here, we identify
microbiota-derived short chain fatty acids (SCFA) as
microbial metabolites which promote Aβ deposition.
Germ-free (GF) AD mice exhibit a substantially reduced Aβ
plaque load and markedly reduced SCFA plasma concentrations;
conversely, SCFA supplementation to GF AD mice increased the
Aβ plaque load to levels of conventionally colonized
(specific pathogen-free [SPF]) animals and SCFA
supplementation to SPF mice even further exacerbated plaque
load. This was accompanied by the pronounced alterations in
microglial transcriptomic profile, including upregulation of
ApoE. Despite increased microglial recruitment to Aβ
plaques upon SCFA supplementation, microglia contained less
intracellular Aβ. Taken together, our results demonstrate
that microbiota-derived SCFA are critical mediators along
the gut-brain axis which promote Aβ deposition likely via
modulation of the microglial phenotype.},
keywords = {Alzheimer Disease: metabolism / Animals / Fatty Acids,
Volatile: metabolism / Female / Gastrointestinal Microbiome
/ Male / Mice / Microglia: metabolism / Plaque, Amyloid:
metabolism / Specific Pathogen-Free Organisms},
cin = {AG Tahirovic / AG Steiner / AG Herms / AG Haass},
ddc = {600},
cid = {I:(DE-2719)1140003 / I:(DE-2719)1110000-1 /
I:(DE-2719)1110001 / I:(DE-2719)1110007},
pnm = {352 - Disease Mechanisms (POF4-352)},
pid = {G:(DE-HGF)POF4-352},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:33845942},
pubmed = {33845942},
pmc = {pmc:PMC8043748},
doi = {10.7554/eLife.59826},
url = {https://pub.dzne.de/record/154828},
}