Med,
Journal Year:
2023,
Volume and Issue:
4(9), P. 612 - 634.e4
Published: July 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.
Cell Reports,
Journal Year:
2020,
Volume and Issue:
33(8), P. 108419 - 108419
Published: Nov. 1, 2020
Human
trophoblast
stem
cells
(hTSCs)
derived
from
blastocysts
and
first-trimester
cytotrophoblasts
offer
an
unprecedented
opportunity
to
study
the
placenta.
However,
access
human
embryos
placentas
is
limited,
thus
preventing
establishment
of
hTSCs
diverse
genetic
backgrounds
associated
with
placental
disorders.
Here,
we
show
that
can
be
generated
numerous
using
post-natal
via
two
alternative
methods:
(1)
somatic
cell
reprogramming
adult
fibroblasts
OCT4,
SOX2,
KLF4,
MYC
(OSKM)
(2)
fate
conversion
naive
extended
pluripotent
cells.
The
resulting
induced/converted
recapitulated
hallmarks
including
long-term
self-renewal,
expression
specific
transcription
factors,
transcriptomic
signature,
potential
differentiate
into
syncytiotrophoblast
extravillous
We
also
clarified
developmental
stage
these
resemble
day
8
cytotrophoblasts.
Altogether,
hTSC
lines
origins
open
possibility
model
both
development
diseases
in
a
dish.
Development,
Journal Year:
2021,
Volume and Issue:
148(12)
Published: June 15, 2021
ABSTRACT
The
balance
between
stem
cell
potency
and
lineage
specification
entails
the
integration
of
both
extrinsic
intrinsic
cues,
which
ultimately
influence
gene
expression
through
activity
transcription
factors.
One
example
this
is
provided
by
Hippo
signalling
pathway,
plays
a
central
role
in
regulating
organ
size
during
development.
pathway
mediated
transcriptional
co-factors
Yes-associated
protein
(YAP)
co-activator
with
PDZ-binding
motif
(TAZ),
interact
TEA
domain
(TEAD)
proteins
to
regulate
expression.
Although
roles
YAP
TAZ
have
been
intensively
studied,
played
TEAD
are
less
well
understood.
Recent
studies
begun
address
this,
revealing
that
TEADs
progenitor
self-renewal
differentiation
throughout
various
stages
Furthermore,
it
becoming
apparent
other
biology.
This
Primer
provides
an
overview
development,
focusing
on
their
as
within
developmental,
homeostatic
disease
contexts.
Development,
Journal Year:
2021,
Volume and Issue:
148(21)
Published: Oct. 15, 2021
ABSTRACT
Two
recently
developed
models,
trophoblast
organoids
and
stem
cells
(TSCs),
are
useful
tools
to
further
the
understanding
of
human
placental
development.
Both
differentiate
from
villous
cytotrophoblast
(VCT)
either
extravillous
(EVT)
or
syncytiotrophoblast
(SCT).
Here,
we
compare
transcriptomes
miRNA
profiles
these
models
identify
which
they
resemble
in
vivo.
Our
findings
indicate
that
TSCs
do
not
readily
undergo
SCT
differentiation
closely
at
base
cell
columns
where
EVT
derives.
In
contrast,
similar
VCT
spontaneous
differentiation.
A
defining
feature
is
leukocyte
antigen
(HLA)
null,
whereas
expresses
HLA-C,
-G
-E
molecules.
We
find
retain
vivo
characteristics.
express
classical
HLA-A
HLA-B
molecules,
maintain
their
expression
after
differentiation,
with
upregulation
HLA-G.
Furthermore,
HLA
differs
when
grown
3D
rather
than
2D,
suggesting
mechanical
cues
important.
results
can
be
used
select
most
suitable
model
for
study
development,
function
pathology.
Development,
Journal Year:
2022,
Volume and Issue:
149(1)
Published: Jan. 1, 2022
ABSTRACT
In
early
placental
development,
progenitor
cytotrophoblasts
(CTB)
differentiate
along
one
of
two
cellular
trajectories:
the
villous
or
extravillous
pathways.
CTB
committed
to
pathway
fuse
with
neighboring
form
outer
multinucleated
syncytiotrophoblast
(SCT),
whereas
into
invasive
trophoblasts
(EVT).
Unfortunately,
little
is
known
about
processes
controlling
human
maintenance
and
differentiation.
To
address
this,
we
established
a
single
cell
RNA
sequencing
(scRNA-seq)
dataset
from
first
trimester
placentas
identify
states
important
in
trophoblast
establishment,
renewal
Multiple
distinct
were
identified,
representing
CTB,
column
SCT
precursors
EVT.
Lineage
trajectory
analysis
identified
origin
that
was
reproduced
stem
organoids.
Heightened
expression
basal
adhesion
molecule
(BCAM)
defined
this
primitive
state,
where
BCAM
enrichment
gene
silencing
resulted
enhanced
diminished
organoid
growth,
respectively.
Together,
work
describes
at
high-resolution
heterogeneity
within
trimester,
resolves
networks
progenitors
identifies
as
marker
possible
regulator.
Stem Cell Reports,
Journal Year:
2022,
Volume and Issue:
17(6), P. 1303 - 1317
Published: May 19, 2022
Trophoblast
stem
cells
(TSCs)
have
recently
been
derived
from
human
embryos
and
early-first-trimester
placenta;
however,
aside
ethical
challenges,
the
unknown
disease
potential
of
these
limits
their
scientific
utility.
We
previously
established
a
bone
morphogetic
protein
4
(BMP4)-based
two-step
protocol
for
differentiation
primed
pluripotent
(hPSCs)
into
functional
trophoblasts;
those
trophoblasts
could
not
be
maintained
in
self-renewing
TSC-like
state.
Here,
we
use
first
step
this
protocol,
followed
by
switch
to
newly
developed
TSC
medium,
derive
bona
fide
TSCs.
show
that
resemble
placenta-
naive
hPSC-derived
TSCs,
based
on
transcriptome
as
well
vitro
vivo
potential.
conclude
hPSCs
can
used
generate
TSCs
through
simple
which
applied
widely
available
set
existing
hPSCs,
including
induced
cells,
patients
with
known
birth
outcomes.