Theranostics,
Journal Year:
2023,
Volume and Issue:
13(11), P. 3568 - 3581
Published: Jan. 1, 2023
Background:
Perturbation
of
macrophage
homeostasis
is
one
the
key
mechanisms
airway
inflammation
in
asthma.However,
exact
remain
poorly
understood.Objectives:
We
sought
to
examine
role
histone
deacetylase
(HDAC)
10
as
an
epigenetic
regulator
that
governs
M2
program
and
promotes
asthma,
elucidate
underlying
mechanisms.Methods:
Peripheral
blood
biopsies
were
obtained
from
healthy
individuals
asthmatic
patients.Asthma
was
induced
by
exposure
allergen
mice
with
myeloid-specific
deletion
Hdac10
(Hdac10
fl/fl
-LysMCre)
mice.HDAC10
inhibitor
Salvianolic
acid
B
(SAB),
STAT3
selective
agonist
Colivelin,
specific
PI3K/Akt
activator
1,3-Dicaffeoylquinic
(DA)
also
used
mice.For
cell
studies,
THP1
cells,
primary
mouse
bone
marrow
derived
(BMDMs)
related
signaling
pathways
investigated.Results:
HDAC10
expression
highly
expressed
macrophages
promoted
activation
patients
mice.Hdac10
-LysMCre
protected
experimental
asthma
model.Hdac10
deficiency
significantly
attenuated
decreased
polarization
following
exposure.Mechanistically,
directly
binds
for
deacetylation
macrophages,
which
it
activates
program.Importantly,
we
identified
SAB
a
had
protective
effects
against
mice.Conclusions:
Our
results
revealed
HDAC10-STAT3
interaction
promote
implicating
therapeutic
target.
Nature reviews. Immunology,
Journal Year:
2023,
Volume and Issue:
23(9), P. 563 - 579
Published: March 15, 2023
Macrophages
are
innate
immune
cells
that
form
a
3D
network
in
all
our
tissues,
where
they
phagocytose
dying
and
cell
debris,
complexes,
bacteria
other
waste
products.
Simultaneously,
produce
growth
factors
signalling
molecules
—
such
activities
not
only
promote
host
protection
response
to
invading
microorganisms
but
also
crucial
for
organ
development
homeostasis.
There
is
mounting
evidence
of
macrophages
orchestrating
fundamental
physiological
processes,
as
blood
vessel
formation,
adipogenesis,
metabolism
central
peripheral
neuronal
function.
In
parallel,
novel
methodologies
have
led
the
characterization
tissue-specific
macrophages,
with
distinct
subpopulations
these
showing
different
developmental
trajectories,
transcriptional
programmes
life
cycles.
Here,
we
summarize
growing
knowledge
macrophage
diversity
how
subsets
orchestrate
tissue
We
further
interrelate
ontogeny
their
core
functions
across
is,
events
within
niche
may
control
functionality
during
development,
homeostasis
ageing.
Finally,
highlight
open
questions
will
need
be
addressed
by
future
studies
better
understand
subsets.
important
immunity
infections
clearing
products
from
maintain
health
regulating
metabolism,
many
biological
processes.
Elvira
Mass
co-workers
discuss
populations
found
throughout
body,
highlighting
shared
unique
aspects
functions.
bioRxiv (Cold Spring Harbor Laboratory),
Journal Year:
2023,
Volume and Issue:
unknown
Published: June 14, 2023
Abstract
Dysregulated
cell-cell
communication
is
a
hallmark
of
many
disease
phenotypes.
Due
to
recent
advances
in
single-cell
transcriptomics
and
computational
approaches,
it
now
possible
study
intercellular
on
genome-
tissue-wide
scale.
However,
most
current
inference
tools
have
limitations
when
analyzing
data
from
multiple
samples
conditions.
Their
main
limitation
that
they
do
not
address
inter-sample
heterogeneity
adequately,
which
could
lead
false
inference.
This
issue
crucial
for
human
cohort
scRNA-seq
datasets,
complicating
the
comparison
between
healthy
diseased
subjects.
Therefore,
we
developed
MultiNicheNet
(
https://github.com/saeyslab/multinichenetr
),
novel
framework
better
analyze
multi-sample
multi-condition
data.
The
goals
are
inferring
differentially
expressed
active
ligand-receptor
pairs
conditions
interest
predicting
putative
downstream
target
genes
these
pairs.
To
achieve
this
goal,
applies
principles
state-of-the-art
differential
expression
algorithms
As
result,
users
can
while
adequately
addressing
heterogeneity,
handling
complex
multifactorial
experimental
designs,
correcting
batch
effects
covariates.
Moreover,
uses
NicheNet-v2,
our
new
substantially
improved
version
NicheNet’s
network
ligand-target
prior
knowledge
model.
We
applied
patient
several
diseases
(breast
cancer,
squamous
cell
carcinoma,
multisystem
inflammatory
syndrome
children,
lung
fibrosis).
For
diseases,
uncovered
known
aberrant
signaling
processes.
also
demonstrated
MultiNicheNet’s
potential
perform
non-trivial
analysis
tasks,
such
as
studying
between-
within-group
differences
dynamics
response
therapy.
final
example,
used
MulitNicheNet
elucidate
dysregulated
idiopathic
pulmonary
fibrosis
integrated
atlas
Given
anticipated
increase
datasets
due
technological
advancements
extensive
atlas-building
integration
efforts,
expect
will
be
valuable
tool
uncover
states.
The Journal of Experimental Medicine,
Journal Year:
2023,
Volume and Issue:
220(6)
Published: March 22, 2023
Dendritic
cells
(DCs)
and
monocytes
capture,
transport,
present
antigen
to
cognate
T
in
the
draining
lymph
nodes
(LNs)
a
CCR7-dependent
manner.
Since
only
migratory
DCs
express
this
chemokine
receptor,
it
is
unclear
how
reach
LN.
In
steady-state
following
inhalation
of
several
PAMPs,
scRNA-seq
identified
LN
mononuclear
phagocytes
as
monocytes,
resident,
or
type
1
2
conventional
(c)DCs,
despite
downregulation
Xcr1,
Clec9a,
H2-Ab1,
Sirpa,
Clec10a
transcripts
on
cDCs.
Migratory
cDCs,
however,
upregulated
Ccr7,
Ccl17,
Ccl22,
Ccl5.
expressed
Ccr5,
high-affinity
receptor
for
Using
two
tracking
methods,
we
observed
that
both
CD88hiCD26lomonocytes
CD88−CD26hi
cDCs
captured
inhaled
antigens
lung
migrated
LNs.
Antigen
exposure
mixed-chimeric
Ccl5-,
Ccr2-,
Ccr5-,
Ccr7-,
Batf3-deficient
mice
demonstrated
while
antigen-bearing
use
CCR7
LN,
CCR5
follow
CCL5-secreting
into
where
they
regulate
DC-mediated
immunity.
Journal of Clinical Investigation,
Journal Year:
2023,
Volume and Issue:
133(19)
Published: Oct. 1, 2023
Alveolar
macrophages
(AMs)
are
the
sentinel
cells
of
alveolar
space,
maintaining
homeostasis,
fending
off
pathogens,
and
controlling
lung
inflammation.
During
acute
injury,
AMs
orchestrate
initiation
resolution
inflammation
in
order
to
ultimately
restore
homeostasis.
This
central
role
makes
attractive
targets
for
therapeutic
interventions.
Single-cell
RNA-Seq
spatial
omics
approaches,
together
with
methodological
advances
such
as
generation
human
from
pluripotent
stem
cells,
have
increased
understanding
ontogeny,
function,
plasticity
during
infectious
sterile
inflammation,
which
could
move
field
closer
clinical
application.
However,
proresolution
phenotypes
might
conflict
proinflammatory
antibacterial
responses.
Therefore,
targeting
at
vulnerable
time
points
over
course
injury
harbor
risk
serious
side
effects,
loss
host
defense
capacity.
Thus,
identification
key
signaling
hubs
that
determine
functional
fate
decisions
is
utmost
importance
harness
their
potential.