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@ARTICLE{Bieber:169757,
author = {K. Bieber and M. Günter$^*$ and K. A. Pasquevich and S.
Autenrieth$^*$},
title = {{S}ystemic bacterial infections affect dendritic cell
development and function.},
journal = {International journal of medical microbiology},
volume = {311},
number = {6},
issn = {1438-4221},
address = {München},
publisher = {Elsevier},
reportid = {DKFZ-2021-01540},
pages = {151517},
year = {2021},
note = {#LA:F171#},
abstract = {Dendritic cells (DCs) are critical in host defense against
infection. DC depletion is an early event in the course of
sepsis that may impair the host defense mechanisms. Here, we
addressed whether DC depletion and dysfunction are
pathogen-independent, mediated via pattern recognition
receptors, and are due to impaired DC development upon
systemic infection with the Gram-negative bacterium
Escherichia coli and the Gram-positive pathogen
Staphylococcus aureus. Infection with E. coli and S. aureus
led to reduced numbers of splenic DC subsets and of DC
progenitors in the bone marrow (BM) with this effect
persisting significantly longer in mice infected with S.
aureus than with E. coli. The reduction of DC subsets and
their progenitors was mainly TLR-independent as was the
infection-induced monopoiesis. Moreover, de novo DC
development was impaired in mice infected with S. aureus,
and BM cells from E. coli or S. aureus infected mice favored
macrophage differentiation in vitro. As a consequence of
reduced DC numbers and their reduced expression of MHC II
less CD4+ and CD8+ T cells, especially Th1 and IFN-γ
producing CD8+ T cells, could be detected in S. aureus
compared to E. coli infected mice. These differences are
reflected in the rapid killing of E. coli as opposed to an
increase in bacterial load in S. aureus. In summary, our
study supports the idea that systemic bacterial infections
generally affect the number and development of DCs and
thereby the T cell responses, but the magnitude is
pathogen-dependent.},
keywords = {Dendritic cells (Other) / Development (Other) / Escherichia
coli (Other) / Infection (Other) / Innate immune defense
(Other) / Monocytes (Other) / Staphylococcus aureus (Other)
/ TLR (Other)},
cin = {F171},
ddc = {610},
cid = {I:(DE-He78)F171-20160331},
pnm = {316 - Infektionen, Entzündung und Krebs (POF4-316)},
pid = {G:(DE-HGF)POF4-316},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:34233227},
doi = {10.1016/j.ijmm.2021.151517},
url = {https://inrepo02.dkfz.de/record/169757},
}