PLoS Pathogens,
Год журнала:
2024,
Номер
20(2), С. e1011990 - e1011990
Опубликована: Фев. 7, 2024
Background
Hofbauer
cells
(HBCs)
and
cytotrophoblasts
(CTBs)
are
major
cell
populations
in
placenta.
The
indirect
impact
of
maternal
SARS-CoV-2
disease
on
these
that
not
directly
infected
has
been
extensively
studied.
Herein,
we
profiled
gene
expression
HBCs
CTBs
isolated
from
placentae
recovered
pregnant
subjects
with
during
all
trimesters
pregnancy,
active
infection,
vaccinated
subjects,
those
who
were
unexposed
to
the
virus.
Methods
Placentae
collected
within
4
h
post-delivery
membrane-free
tissues
enzymatically
digested
for
isolation
CTBs.
RNA
extracted
sequenced
using
150bp
paired-end
reads.
Differentially
expressed
genes
(DEGs)
identified
by
DESeq2
package
R
enriched
GO
Biological
Processes,
KEGG
Pathway,
Reactome
Gene
Sets,
Hallmark
Canonical
Pathways.
Protein-protein
interactions
among
DEGs
modelled
STRING
BioGrid.
Results
Pregnant
(n
=
30)
recruited
categorized
into
six
groups:
i)
first
(1T,
n
4),
ii)
second
(2T,
5),
iii)
third
(3T,
5)
trimester,
iv)
tested
positive
at
delivery
(Delivery,
v)
never
(Control,
6),
vi)
fully
mRNA-vaccinated
(Vaccinated,
5).
Compared
Control
group,
analysis
showed
had
significantly
altered
profiles,
2T
group
having
highest
number
(1,696),
followed
3T
1T
groups
(1,656
958
DEGs,
respectively).
These
pathways
involved
immune
regulation
host
defense,
including
production
cytokines,
chemokines,
antimicrobial
proteins,
ribosomal
assembly,
neutrophil
degranulation
inflammation,
morphogenesis,
migration/adhesion.
interaction
mapped
oxidative
phosphorylation,
translation,
extracellular
matrix
organization,
type
I
interferon
signaling.
Only
95,
23,
8
1T,
2T,
groups,
respectively.
Similarly,
11
3
Reassuringly,
mRNA
vaccination
did
induce
an
inflammatory
response
placental
cells.
Conclusions
Our
studies
demonstrate
a
significant
infection
inner
mesenchymal
HBCs,
limited
effect
lining
CTB
SARS-CoV-2.
associated
identify
potential
targets
therapeutic
intervention.
JAMA Network Open,
Год журнала:
2023,
Номер
6(3), С. e234415 - e234415
Опубликована: Март 23, 2023
Importance
Prior
studies
using
large
registries
have
suggested
a
modest
increase
in
risk
for
neurodevelopmental
diagnoses
among
children
of
mothers
with
immune
activation
during
pregnancy,
and
such
may
be
sex-specific.
Objective
To
determine
whether
utero
exposure
to
SARS-CoV-2
is
associated
sex-specific
disorders
up
18
months
after
birth,
compared
unexposed
offspring
born
or
prior
the
COVID-19
pandemic
period.
Design,
Setting,
Participants
This
retrospective
cohort
study
included
live
all
who
delivered
between
January
1
December
31,
2018
(born
followed
before
pandemic),
March
2019
1,
2020,
May
2021
pandemic).
Offspring
were
at
any
8
hospitals
across
2
health
systems
Massachusetts.
Exposures
Polymerase
chain
reaction
evidence
maternal
infection
pregnancy.
Main
Outcomes
Measures
Electronic
record
documentation
International
Statistical
Classification
Diseases
Related
Health
Problems,
Tenth
Revision
diagnostic
codes
corresponding
disorders.
Results
The
355
births
(9399
boys
[51.2%]),
including
883
(4.8%)
positivity
1809
Asian
individuals
(9.9%),
1635
Black
(8.9%),
12
718
White
(69.3%),
1714
(9.3%)
other
race
(American
Indian
Alaska
Native,
Native
Hawaiian
Pacific
Islander,
more
than
race);
2617
(14.3%)
Hispanic
ethnicity.
Mean
age
was
33.0
(IQR,
30.0-36.0)
years.
In
adjusted
regression
models
accounting
race,
ethnicity,
insurance
status,
hospital
type
(academic
center
vs
community),
age,
preterm
statistically
significant
elevation
male
(adjusted
OR,
1.94
[95%
CI
1.12-3.17];
P
=
.01)
but
not
female
0.89
CI,
0.39-1.76];
.77).
Similar
effects
identified
matched
analyses
lieu
regression.
At
months,
observed
1.42
0.92-2.11];
.10).
Conclusions
Relevance
this
utero,
greater
magnitude
following
birth.
As
infection,
substantially
larger
cohorts
longer
follow-up
will
required
reliably
estimate
refute
risk.
Nature Communications,
Год журнала:
2024,
Номер
15(1)
Опубликована: Янв. 24, 2024
Abstract
Respiratory
distress
(RD)
has
been
reported
in
SARS-CoV-2
exposed
uninfected
(SEU)
term
neonates.
Prior
studies
suggest
that
prenatal
exposure
to
Coronavirus
Disease
19
(COVID-19)
may
activate
an
inflammatory
cascade
the
newborn
airway.
In
this
study,
we
examine
relationship
between
maternal
COVID-19
vaccination
and
neonatal
RD
using
a
longitudinal
cohort
of
mother-infant
pairs
Los
Angeles,
CA.
Two-hundred
twenty-one
mothers
with
laboratory
confirmed
during
pregnancy
227
fetuses
are
enrolled
our
study.
Maternal
disease
severity
variables
were
defined
based
on
current
accepted
clinical
criteria.
To
explore
multifactorial
associations
parameters
infant
RD,
utilize
multivariable
logistic
regression
model
proteomic
sub-analysis
propose
pathway
for
development
following
utero
SARS-CoV-2.
Unusually
high
rates
observed
SEU
infants
(17%).
The
odds
ratio
is
3.06
(95%
CI:1.08-10.21)
neonates
born
unvaccinated
individuals
versus
those
vaccinated
prior
infection.
Proteomic
analysis
reveals
robust
response
associated
ciliary
dysregulation
enhanced
IgE
production
among
RD.
against
reduces
frequency
Science Immunology,
Год журнала:
2022,
Номер
7(75)
Опубликована: Сен. 9, 2022
Lung-infiltrating
macrophages
create
a
marked
inflammatory
milieu
in
subset
of
patients
with
COVID-19
by
producing
cytokine
storm,
which
correlates
increased
lethality.
However,
these
are
largely
not
infected
SARS-CoV-2,
so
the
mechanism
underlying
their
activation
lung
is
unclear.
Type
I
interferons
(IFN-I)
contribute
to
protecting
host
against
SARS-CoV-2
but
may
also
have
some
deleterious
effect,
and
source
IFN-I
lungs
well
defined.
Plasmacytoid
dendritic
cells
(pDCs),
key
cell
type
involved
antiviral
responses,
can
produce
response
SARS-CoV-2.
We
observed
infiltration
pDCs
SARS-CoV-2–infected
patients,
correlated
strong
signaling
macrophages.
In
severe
COVID-19,
expressed
robust
signature,
persistent
at
single-cell
level.
Hence,
we
uncoupling
kinetics
associated
storm
that
were
dominant
IFN-α–producing
virus
blood,
whereas
produced
IFN-α
only
when
physical
contact
epithelial
cells.
showed
pDCs,
after
sensing
TLR7,
mediated
changes
both
transcriptional
epigenetic
levels,
favored
hyperactivation
environmental
stimuli.
Together,
data
indicate
priming
result
from
leading
macrophage
COVID-19.
Maternal
infection
during
pregnancy,
leading
to
maternal
immune
activation
(mIA)
and
cytokine
release,
increases
the
offspring
risk
of
developing
a
variety
neurodevelopmental
disorders
(NDDs),
including
schizophrenia.
Animal
models
have
provided
evidence
support
these
mechanistic
links,
with
placental
inflammatory
responses
dysregulation
function
implicated.
This
leads
changes
in
fetal
brain
balance
altered
epigenetic
regulation
key
pathways.
The
prenatal
timing
such
mIA-evoked
changes,
accompanying
developmental
an
Frontiers in Immunology,
Год журнала:
2025,
Номер
15
Опубликована: Янв. 13, 2025
Introduction
The
immune
compartment
within
fetal
chorionic
villi
is
comprised
of
Hofbauer
cells
(HBC)
and
invading
placenta-associated
maternal
monocytes
macrophages
(PAMM).
Recent
studies
have
characterized
the
transcriptional
profile
first
trimester
(T1)
placenta;
however,
phenotypic
functional
diversity
villous
at
term
(T3)
remain
poorly
understood.
Methods
To
address
this
knowledge
gap,
from
human
tissues
obtained
full-term,
uncomplicated
pregnancies
were
deeply
phenotyped
using
a
combination
flow
cytometry,
single-cell
RNA
sequencing
(scRNA-seq,
CITE-seq)
chromatin
accessibility
profiling
(snATAC-seq).
Results
Our
results
indicate
that,
relative
to
trimester,
frequency
(HBC,
proliferating
HBC)
significantly
reduced,
whereas
that
infiltrating
monocytes/macrophages
(PAMM1b,
PAMM1a,
PAMM2,
MAC_1)
increased
in
T3.
PAMM1b
HBCs
exhibit
most
phagocytic
capacity
highlighting
their
regulatory
role
tissue
homeostasis
late
pregnancy.
profiles
resident
subsets
heightened
activation
state
T1,
likely
support
labor
parturition.
Additionally,
we
provide
one
insights
into
myeloid
term.
We
next
stratified
our
findings
by
pre-pregnancy
BMI
since
pregravid
obesity
associated
with
several
adverse
pregnancy
outcomes.
Pregravid
inflammatory
gene
expression,
particularly
among
HBC
PAMM1a
subsets,
but
dampened
expression
antimicrobial
genes,
supporting
tolerant-like
phenotype
cells.
report
decline
abundance
accompanied
an
increase
macrophages,
which
aligns
reports
pathologies
obesity.
Finally,
given
shared
yolk-sac
origin
microglia,
leveraged
vitro
model
umbilical
cord
blood-derived
microglia
investigate
impact
on
neurodevelopment.
reveal
markers
albeit
Discussion
Overall,
study
highlights
adaptations
gestational
age
obesity,
as
well
insight
towards
dysfunction
possibly
underlying
poor
neurodevelopmental
outcomes
offspring
women
Nature Cell Biology,
Год журнала:
2023,
Номер
25(8), С. 1223 - 1234
Опубликована: Июль 13, 2023
Abstract
SARS-CoV-2
infection
causes
COVID-19.
Several
clinical
reports
have
linked
COVID-19
during
pregnancy
to
negative
birth
outcomes
and
placentitis.
However,
the
pathophysiological
mechanisms
underpinning
placentation
early
are
not
clear.
Here,
shed
light
on
this,
we
used
induced
trophoblast
stem
cells
generate
an
in
vitro
placenta
model.
We
identified
that
syncytiotrophoblasts
could
be
infected
through
angiotensin-converting
enzyme
2
(ACE2).
Using
a
co-culture
model
of
vertical
transmission,
confirmed
ability
virus
infect
previous
endometrial
cell
infection.
further
demonstrated
transcriptional
changes
led
impairment
cellular
processes,
reduced
secretion
HCG
hormone
morphological
vital
for
syncytiotrophoblast
function.
Furthermore,
different
antibody
strategies
antiviral
drugs
restore
these
impairments.
In
summary,
established
scalable
tractable
platform
study
placental
types
highlighted
its
use
studying
protect
placenta.
The Journal of Clinical Endocrinology & Metabolism,
Год журнала:
2023,
Номер
108(10), С. 2579 - 2588
Опубликована: Март 29, 2023
Abstract
Context
Since
the
initial
outbreak
of
coronavirus
disease
2019
(COVID-19),
a
novel
population
children
with
in
utero
exposure
to
maternal
infection
has
emerged
whose
health
outcomes
are
largely
unknown.
Objective
To
compare
longitudinal
growth
trajectories
among
infants
vs
without
COVID-19
exposure.
Methods
We
conducted
cohort
study
leveraging
prospectively
enrolled
perinatal
biorepository
149
and
127
unexposed
controls.
Weight,
length,
body
mass
index
(BMI)
were
abstracted
from
records
at
0,
2,
6,
12
months
standardized
using
World
Health
Organization
charts.
Analyses
adjusted
for
age,
ethnicity,
parity,
insurance,
BMI
as
well
infant
sex,
birthdate,
breastfeeding.
Results
Infants
controls
exhibited
differential
weight
BMI,
but
not
z-score
over
first
year
life
(study
group
×
time
interaction,
P
<
.0001
BMI).
born
mothers
prenatal
had
lower
birth
(effect
size:
−0.35,
95%
CI
−0.66
−0.03)
greater
gain
0.53,
0.06
0.99).
Birth
mediated
significant
proportion
relationship
between
postnatal
(estimate
±
SE,
32
14%,
=
.02).
Conclusion
accelerated
life,
which
may
be
harbingers
downstream
cardiometabolic
pathology.
Further
studies
needed
delineate
sequelae
this
emerging
global
population.
Med,
Год журнала:
2023,
Номер
4(9), С. 612 - 634.e4
Опубликована: Июль 8, 2023
BackgroundFunctional
placental
niches
are
presumed
to
spatially
separate
maternal-fetal
antigens
and
restrict
the
vertical
transmission
of
pathogens.
We
hypothesized
a
high-resolution
map
transcription
could
provide
direct
evidence
for
niche
microenvironments
with
unique
functions
profiles.MethodsWe
utilized
Visium
Spatial
Transcriptomics
paired
H&E
staining
generate
17,927
spatial
transcriptomes.
By
integrating
these
transcriptomes
273,944
single-cell
single-nuclei
transcriptomes,
we
generated
an
atlas
composed
at
least
22
subpopulations
in
maternal
decidua,
fetal
chorionic
villi,
chorioamniotic
membranes.FindingsComparisons
placentae
from
uninfected
healthy
controls
(n
=
4)
COVID-19
asymptomatic
symptomatic
5)
infected
participants
demonstrated
that
severe
acute
respiratory
syndrome
coronavirus
2
(SARS-CoV-2)
detection
syncytiotrophoblasts
occurred
both
presence
absence
clinical
disease.
With
transcriptomics,
found
limit
SARS-CoV-2
was
1/7,000
cells,
without
detectable
viral
transcripts
were
unperturbed.
In
contrast,
high
transcript
levels
associated
significant
upregulation
pro-inflammatory
cytokines
interferon-stimulated
genes,
altered
metallopeptidase
signaling
(TIMP1),
coordinated
shifts
macrophage
polarization,
histiocytic
intervillositis,
perivillous
fibrin
deposition.
Fetal
sex
differences
gene
expression
responses
limited,
confirmed
mapping
limited
decidua
males.ConclusionsHigh-resolution
transcriptomics
resolution
revealed
dynamic
coordinate
clinically
evident
disease.FundingThis
work
supported
by
NIH
(R01HD091731
T32-HD098069),
NSF
(2208903),
Burroughs
Welcome
Fund
March
Dimes
Preterm
Birth
Research
Initiatives,
Career
Development
Award
American
Society
Gene
Cell
Therapy.