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@ARTICLE{Bader:282589,
author = {Bader, Almke and Gao, Jincheng and Reiter, Nina and Siemes,
Devon and Zehrer, Annette and Wei, Xiang and Hepper, Ingrid
and de Vega Gómez, Enrique and Schmid, Bettina and Forné,
Ignasi and Engel, Daniel Robert and Walzog, Barbara and
Maier-Begandt, Daniela},
title = {{SCAMP}3 is essential for proper formation and function of
neutrophil granules.},
journal = {Journal of leukocyte biology},
volume = {117},
number = {12},
issn = {0741-5400},
address = {Tokyo},
publisher = {Oxford University Press},
reportid = {DZNE-2025-01349},
pages = {qiaf153},
year = {2025},
abstract = {Host defense functions of neutrophils during infection
critically depend on microbicidal and proteolytic proteins
stored in primary, secondary, and tertiary granules that are
released into the phagosome or into the extracellular space
upon degranulation. Granules are generated during
granulopoiesis, and impaired granule production or granule
protein sorting has been linked to inefficient pathogen
clearance resulting in recurrent bacterial and fungal
infections. Here, we studied the role of secretory carrier
associated membrane protein 3 (SCAMP3) for neutrophil
defense functions. We generated Scamp3 knockout (KO) Hoxb8
cells and found that killing of Escherichia coli by Scamp3
KO Hoxb8 cell-derived neutrophils (dHoxb8 cells) was
compromised as compared with control dHoxb8 cells in vitro.
Mass spectrometric and Western blot analyses revealed a
significant reduction of primary, secondary, and tertiary
granule proteins in the genetic absence of Scamp3, resulting
in a reduced overall granularity of these cells.
Accordingly, degranulation was reduced in Scamp3 KO dHoxb8
cells compared with control dHoxb8 cells. Similarly, Scamp3
deficiency in zebrafish resulted in reduced neutrophil
granularity in comparison with wild-type animals. However,
neutrophil migration toward sites of E. coli infection was
unaffected in scamp3 KO zebrafish larvae. In summary, SCAMP3
represents an important novel player in granule equipment
and degranulation, with key functions in neutrophil defense
mechanisms during host-pathogen interactions in vitro.},
keywords = {Animals / Neutrophils: immunology / Neutrophils: metabolism
/ Zebrafish / Cell Degranulation: immunology / Membrane
Proteins: genetics / Membrane Proteins: immunology /
Membrane Proteins: metabolism / Cytoplasmic Granules:
metabolism / Cytoplasmic Granules: immunology / Escherichia
coli: immunology / Escherichia coli Infections: immunology /
Mice / Homeodomain Proteins: genetics / SCAMP3 (Other) /
granules (Other) / host defense (Other) / infection (Other)
/ neutrophils (Other) / Membrane Proteins (NLM Chemicals) /
Homeodomain Proteins (NLM Chemicals)},
cin = {AG Schmid München},
ddc = {570},
cid = {I:(DE-2719)1140002},
pnm = {352 - Disease Mechanisms (POF4-352)},
pid = {G:(DE-HGF)POF4-352},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:41187789},
doi = {10.1093/jleuko/qiaf153},
url = {https://pub.dzne.de/record/282589},
}