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@ARTICLE{Quiroz:303955,
author = {J. N. Quiroz and M. Sielaff and D. Kondrateva and F.
Boukhallouk and G. J. Godoy and C. R. Molina and B. Moonen
and C. C. Motran and J. Bogie and H. D. Luján and S.
Tenzer$^*$ and T. Sparwasser and L. Berod},
title = {{TLR}9-{D}riven {S}-{P}almitoylation in {D}endritic {C}ells
{R}eveals {I}mmune and {M}etabolic {P}rotein {T}argets.},
journal = {European journal of immunology},
volume = {55},
number = {8},
issn = {0014-2980},
address = {Weinheim},
publisher = {Wiley-VCH},
reportid = {DKFZ-2025-01730},
pages = {e70039},
year = {2025},
abstract = {Dendritic cells (DCs) rely on Toll-like receptor 9 (TLR9)
to detect unmethylated CpG motifs in microbial DNA,
triggering essential immune responses. While the downstream
signaling pathways of TLR9 activation are well
characterized, their impact on S-palmitoylation is unknown.
S-palmitoylation, involving the reversible attachment of
palmitic acid to cysteine residues, plays a crucial role in
regulating protein function and is catalyzed by the ZDHHC
family of palmitoyl-acyltransferases (PATs). In this study,
we investigated the S-palmitoylated proteome of bone
marrow-derived GM-CSF DCs (GM-DCs) at resting and following
TLR9 activation with CpGB. Using the
click-chemistry-compatible analog 17-octadecynoic acid
(17-ODYA) and mass spectrometry (MS)-based proteomics, we
characterized dynamic remodeling of S-palmitoylation in
response to TLR9 activation. This included enrichment of
targets involved in immune and metabolic pathways.
Transcriptomic analysis of mice and human DCs revealed
TLR9-driven modulation of PAT-encoding genes. Subsequently,
we explored the contribution of Zdhhc9 expression to the
regulation of S-palmitoylation in DCs. Using gene knockout
approaches, we identified candidate protein targets
potentially linked to ZDHHC9 activity. Interestingly,
modulation of Zdhhc9 expression alone did not influence DC
maturation, suggesting that other PATs might compensate for
its activity. Together, our findings reveal a novel layer of
regulation in TLR9 signaling mediated by S-palmitoylation.},
keywords = {S‐palmitoylation (Other) / TLR9 signaling (Other) /
dendritic cells (Other) / innate immunity (Other)},
cin = {D191},
ddc = {610},
cid = {I:(DE-He78)D191-20160331},
pnm = {314 - Immunologie und Krebs (POF4-314)},
pid = {G:(DE-HGF)POF4-314},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:40828036},
pmc = {pmc:PMC12363430},
doi = {10.1002/eji.70039},
url = {https://inrepo02.dkfz.de/record/303955},
}