Journal of Innate Immunity,
Journal Year:
2023,
Volume and Issue:
15(1), P. 562 - 580
Published: Jan. 1, 2023
The
consequences
of
infection
with
severe
acute
respiratory
syndrome
coronavirus
2
(SARS-CoV-2)
can
range
from
asymptomatic
to
fatal
disease.
Variations
in
epithelial
susceptibility
SARS-CoV-2
depend
on
the
anatomical
location
proximal
distal
tract.
However,
cellular
biology
underlying
these
variations
is
not
completely
understood.
Thus,
air-liquid
interface
cultures
well-differentiated
primary
human
tracheal
and
bronchial
cells
were
employed
study
impact
composition
differentiation
by
transcriptional
(RNA
sequencing)
immunofluorescent
analyses.
Changes
investigated
varying
time
or
using
specific
compounds.
We
found
that
primarily
infected
only
ciliated
but
also
goblet
transient
secretory
cells.
Viral
replication
was
impacted
differences
composition,
which
depended
culturing
origin.
A
higher
percentage
correlated
a
viral
load.
DAPT
treatment,
increased
number
reduced
cells,
decreased
load,
indicating
contribution
infection.
Cell
entry
factors,
especially
cathepsin
L
transmembrane
protease
serine
2,
affected
time.
In
conclusion,
our
demonstrates
changes
related
mucociliary
system.
This
could
explain
part
variable
between
individuals
locations
International Journal of Molecular Sciences,
Journal Year:
2023,
Volume and Issue:
24(9), P. 8290 - 8290
Published: May 5, 2023
Severe
Acute
Respiratory
Syndrome
CoronaVirus
2
(SARS-CoV-2)
infection
triggers
various
events
from
molecular
to
tissue
level,
which
in
turn
is
given
by
the
intrinsic
characteristics
of
each
patient.
Given
diversity
characteristic
cellular
phenotype,
possible
cytopathic,
and
clinical
effects
are
difficult
predict,
determines
heterogeneity
COVID-19
symptoms.
The
purpose
this
article
provide
a
comprehensive
review
cytopathic
SARS-CoV-2
on
cell
types,
focusing
development
COVID-19,
may
lead,
some
patients,
persistence
symptoms
after
recovery
disease,
condition
known
as
long
COVID.
We
describe
mechanisms
underlying
virus-host
interactions,
including
alterations
protein
expression,
intracellular
signaling
pathways,
immune
responses.
In
particular,
highlights
potential
impact
these
cytopathies
function
outcomes,
such
dysregulation,
neuropsychiatric
disorders,
organ
damage.
concludes
discussing
future
directions
for
research
implications
management
treatment
Science Immunology,
Journal Year:
2023,
Volume and Issue:
8(86)
Published: Aug. 4, 2023
Helminth
endemic
regions
report
lower
COVID-19
morbidity
and
mortality.
Here,
we
show
that
lung
remodeling
from
a
prior
infection
with
lung-migrating
helminth,
Nippostrongylus
brasiliensis,
enhances
viral
clearance
survival
of
human-ACE2
transgenic
mice
challenged
SARS-CoV-2
(SCV2).
This
protection
is
associated
lymphocytic
infiltrate,
including
increased
accumulation
pulmonary
SCV2-specific
CD8+
T
cells,
anti-CD8
antibody
depletion
abrogated
the
N.
brasiliensis-mediated
reduction
in
loads.
Pulmonary
macrophages
type
2
transcriptional
epigenetic
signature
persist
lungs
brasiliensis-exposed
after
parasite
establish
primed
environment
for
cell
recruitment
activation.
Accordingly,
ablated
augmented
cells
driven
by
brasiliensis
infection.
Together,
these
findings
support
concept
helminths
can
limit
disease
severity
during
SCV2
through
macrophage-dependent
enhancement
antiviral
responses.
JCI Insight,
Journal Year:
2023,
Volume and Issue:
8(1)
Published: Jan. 9, 2023
Substantial
clinical
evidence
supports
the
notion
that
ciliary
function
in
airways
is
important
COVID-19
pathogenesis.
Although
damage
has
been
observed
both
vitro
and
vivo
models,
extent
or
nature
of
impairment
mucociliary
transport
(MCT)
models
remains
unknown.
We
hypothesize
SARS-CoV-2
infection
results
MCT
deficiency
golden
Syrian
hamsters
precedes
pathological
injury
lung
parenchyma.
Micro-optical
coherence
tomography
was
used
to
quantitate
functional
changes
apparatus.
Both
genomic
subgenomic
viral
RNA
physiological
were
monitored
parallel.
show
caused
a
67%
decrease
rate
as
early
2
days
postinfection
(dpi)
hamsters,
principally
due
79%
diminished
airway
coverage
motile
cilia.
Correlating
quantitation
physiological,
virological,
reveals
steadily
descending
from
upper
lower
parenchyma
within
7
dpi.
Our
indicate
deficits
apparatus
are
key
aspect
pathogenesis,
may
extend
retention,
could
pose
risk
factor
for
secondary
infection.
Clinically,
monitoring
abnormal
ciliated
cell
disease
progression.
Therapies
directed
toward
deserve
further
investigation.
The Journal of Physiology,
Journal Year:
2023,
Volume and Issue:
601(9), P. 1555 - 1572
Published: April 3, 2023
During
recent
years
chemosensory
cells
in
extraoral
tissues
have
been
established
as
mediators
for
the
detection
and
regulation
of
innate
immune
processes
response
to
pathogens.
Under
physiological
conditions,
are
present
throughout
respiratory
epithelium
upper
lower
airways
well
main
olfactory
epithelium.
Additionally,
they
emerge
alveolar
region
lung
upon
viral
infections.
Chemosensory
detect
signalling
molecules
from
gram-positive
gram-negative
bacteria
aeroallergens
fungi.
Upon
stimulation
release
multiple
molecules,
such
transmitter
acetylcholine,
cysteinyl
leukotriene
E4
cytokine
interleukin-25,
which
act
autocrine
paracrine
signals
thereby
orchestrate
responses
system.
Activation
stimulates
various
cells,
e.g.
type
2
lymphoid
modulates
mucociliary
clearance
induces
a
protective
neurogenic
inflammation.
This
review
compiles
discusses
findings
regarding
cell
function
tract.
The Lancet Digital Health,
Journal Year:
2024,
Volume and Issue:
6(5), P. e309 - e322
Published: April 24, 2024
In
the
context
of
immune-mediated
inflammatory
diseases
(IMIDs),
COVID-19
outcomes
are
incompletely
understood
and
vary
considerably
depending
on
patient
population
studied.
We
aimed
to
analyse
severe
investigate
effects
pandemic
time
period
risks
associated
with
individual
IMIDs,
classes
immunomodulatory
medications
(IMMs),
chronic
comorbidities,
vaccination
status.
Scientific Reports,
Journal Year:
2024,
Volume and Issue:
14(1)
Published: July 4, 2024
Abstract
As
SARS-CoV-2
continues
to
spread
worldwide,
tractable
primary
airway
cell
models
that
recapitulate
the
cell-intrinsic
response
arising
viral
variants
are
needed.
Here
we
describe
an
adult
stem
cell-derived
human
organoid
model
overexpressing
ACE2
receptor
(ACE2-OE)
supports
robust
replication
while
maintaining
3D
architecture
and
cellular
diversity
of
epithelium.
ACE2-OE
organoids
were
infected
with
subjected
single-cell
RNA-sequencing.
Interferon-lambda
was
upregulated
in
cells
low-level
infection
NF-kB
inhibitor
alpha
gene
(encoding
IkBa)
consistently
cells,
its
expression
positively
correlated
levels.
Confocal
microscopy
showed
more
IkBa
than
bystander
but
found
concurrent
nuclear
translocation
usually
prevents.
Overexpressing
a
nondegradable
mutant
reduced
increased
infection.
These
data
demonstrate
functionality
research
underscore
strength
feedback
loop
controls
replication.