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@ARTICLE{Waern:289303,
author = {I. Waern and S. Akula and V. S. R. R. Allam and S. Taha and
T. B. Feyerabend$^*$ and M. Åbrink and S. Wernersson},
title = {{D}isruption of the mast cell carboxypeptidase {A}3 gene
does not attenuate airway inflammation and
hyperresponsiveness in two mouse models of asthma.},
journal = {PLOS ONE},
volume = {19},
number = {4},
issn = {1932-6203},
address = {San Francisco, California, US},
publisher = {PLOS},
reportid = {DKFZ-2024-00698},
pages = {e0300668 -},
year = {2024},
abstract = {Mast cells are effector cells known to contribute to
allergic airway disease. When activated, mast cells release
a broad spectrum of inflammatory mediators, including the
mast cell-specific protease carboxypeptidase A3 (CPA3). The
expression of CPA3 in the airway epithelium and lumen of
asthma patients has been associated with a Th2-driven airway
inflammation. However, the role of CPA3 in asthma is unclear
and therefore, the aim of this study was to investigate the
impact of CPA3 for the development and severity of allergic
airway inflammation using knockout mice with a deletion in
the Cpa3 gene. We used the ovalbumin (OVA)- and house-dust
mite (HDM) induced murine asthma models, and monitored
development of allergic airway inflammation. In the OVA
model, mice were sensitized with OVA intraperitoneally at
seven time points and challenged intranasally (i.n.) with
OVA three times. HDM-treated mice were challenged i.n. twice
weekly for three weeks. Both asthma protocols resulted in
elevated airway hyperresponsiveness, increased number of
eosinophils in bronchoalveolar lavage fluid, increased
peribronchial mast cell degranulation, goblet cell
hyperplasia, thickening of airway smooth muscle layer,
increased expression of IL-33 and increased production of
allergen-specific IgE in allergen-exposed mice as compared
to mocktreated mice. However, increased number of
peribronchial mast cells was only seen in the HDM asthma
model. The asthma-like responses in Cpa3-/- mice were
similar as in wild type mice, regardless of the asthma
protocol used. Our results demonstrated that the absence of
a functional Cpa3 gene had no effect on several symptoms of
asthma in two different mouse models. This suggest that CPA3
is dispensable for development of allergic airway
inflammation in acute models of asthma in mice.},
cin = {D110},
ddc = {610},
cid = {I:(DE-He78)D110-20160331},
pnm = {314 - Immunologie und Krebs (POF4-314)},
pid = {G:(DE-HGF)POF4-314},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:38578780},
pmc = {pmc:PMC10997103},
doi = {10.1371/journal.pone.0300668},
url = {https://inrepo02.dkfz.de/record/289303},
}