% IMPORTANT: The following is UTF-8 encoded. This means that in the presence
% of non-ASCII characters, it will not work with BibTeX 0.99 or older.
% Instead, you should use an up-to-date BibTeX implementation like “bibtex8” or
% “biber”.
@ARTICLE{Gamara:169804,
author = {J. Gamara and L. Davis and A. Z. Leong and N. Pagé and E.
Rollet-Labelle and C. Zhao and T. Hongu$^*$ and Y. Funakoshi
and Y. Kanaho and F. Aoudji and M. Pelletier and S. G.
Bourgoin},
title = {{A}rf6 regulates energy metabolism in neutrophils.},
journal = {Free radical biology and medicine},
volume = {172},
issn = {0891-5849},
address = {New York, NY [u.a.]},
publisher = {Elsevier},
reportid = {DKFZ-2021-01558},
pages = {550 - 561},
year = {2021},
abstract = {The small GTPase Arf6 regulates many cellular processes,
including cytoskeletal remodeling, receptor endocytosis, and
pathogen phagocytosis. Arf6 silencing in neutrophil
(PMN)-like cells is well-known to inhibit chemotactic
peptide-mediated activation of phospholipase D, the
oxidative burst, and β2 integrin-dependent adhesion. In
conditional knockout (cKO) mice, the migration to
inflammatory sites of Arf6-deficient PMNs was diminished and
associated with reduced cell surface expression of β2
integrins. In this study we assessed the impact of Arf6
depletion on the functions and gene expression profile of
PMNs isolated from the mouse air pouch. Numerous genes
involved in response to oxygen levels, erythrocyte and
myeloid differentiation, macrophage chemotaxis, response to
chemicals, apoptosis, RNA destabilization, endosome
organization, and vesicle transport were differentially
expressed in PMNs cKO for Arf6. Lpar6 and Lacc-1 were the
most up-regulated and down-regulated genes, respectively.
The deletion of Arf6 also decreased Lacc-1 protein level in
PMNs, and silencing of Arf6 in THP-1 monocytic cells delayed
LPS-mediated Lacc-1 expression. We report that fMLP or
zymosan-induced glycolysis and oxygen consumption rate were
both decreased in air pouch PMNs but not in bone marrow PMNs
of Arf6 cKO mice. Reduced oxygen consumption correlated with
a decrease in superoxide and ROS production. Deletion of
Arf6 in PMNs also reduced phagocytosis and interfered with
apoptosis. The data suggest that Arf6 regulates energy
metabolism, which may contribute to impaired phagocytosis,
ROS production, and apoptosis in PMN-Arf6 cKO. This study
provides new information on the functions and the
inflammatory pathways influenced by Arf6 in PMNs.},
subtyp = {Review Article},
keywords = {Apoptosis (Other) / Arf6 (Other) / Conditional knockout
(Other) / FAMIN (Other) / Glycolysis (Other) / Inflammation
(Other) / Metabolism (Other) / Mouse (Other) / Neutrophil
(Other) / Phagocytosis (Other) / ROS (Other) / Superoxide
(Other)},
cin = {A014},
ddc = {610},
cid = {I:(DE-He78)A014-20160331},
pnm = {311 - Zellbiologie und Tumorbiologie (POF4-311)},
pid = {G:(DE-HGF)POF4-311},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:34245858},
doi = {10.1016/j.freeradbiomed.2021.07.001},
url = {https://inrepo02.dkfz.de/record/169804},
}