Cell Reports,
Journal Year:
2023,
Volume and Issue:
42(4), P. 112380 - 112380
Published: April 1, 2023
Recent
advances
in
synthetic
embryology
have
opened
new
avenues
for
understanding
the
complex
events
controlling
mammalian
peri-implantation
development.
Here,
we
show
that
mouse
embryonic
stem
cells
(ESCs)
solely
exposed
to
chemical
inhibition
of
SUMOylation
generate
embryo-like
structures
comprising
anterior
neural
and
trunk-associated
regions.
HypoSUMOylation-instructed
ESCs
give
rise
spheroids
self-organize
into
gastrulating
containing
cell
types
spatially
functionally
related
extraembryonic
compartments.
Alternatively,
cultured
a
droplet
microfluidic
device
form
elongated
undergo
axial
organization
reminiscent
natural
embryo
morphogenesis.
Single-cell
transcriptomics
reveals
various
cellular
lineages,
including
properly
positioned
neuronal
paraxial
mesoderm
segmented
somite-like
structures.
Transient
suppression
gradually
increases
DNA
methylation
genome
wide
repressive
mark
deposition
at
Nanog.
Interestingly,
cell-to-cell
variations
levels
occur
during
early
embryogenesis.
Our
approach
provides
proof
principle
potentially
powerful
strategies
explore
embryogenesis
by
targeting
chromatin
roadblocks
fate
change.
Nature,
Journal Year:
2022,
Volume and Issue:
610(7930), P. 143 - 153
Published: Aug. 25, 2022
Abstract
Embryonic
stem
(ES)
cells
can
undergo
many
aspects
of
mammalian
embryogenesis
in
vitro
1–5
,
but
their
developmental
potential
is
substantially
extended
by
interactions
with
extraembryonic
cells,
including
trophoblast
(TS)
endoderm
(XEN)
and
inducible
XEN
(iXEN)
6–11
.
Here
we
assembled
cell-derived
embryos
from
mouse
ES
TS
iXEN
showed
that
they
recapitulate
the
development
whole
natural
embryo
utero
up
to
day
8.5
post-fertilization.
Our
model
displays
headfolds
defined
forebrain
midbrain
regions
develops
a
beating
heart-like
structure,
trunk
comprising
neural
tube
somites,
tail
bud
containing
neuromesodermal
progenitors,
gut
tube,
primordial
germ
cells.
This
complete
within
an
yolk
sac
initiates
blood
island
development.
Notably,
demonstrate
neurulating
Pax6
-knockout
aggregated
wild-type
recapitulates
ventral
domain
expansion
occurs
natural,
ubiquitous
embryos.
Thus,
these
embryoids
are
powerful
for
dissecting
roles
diverse
cell
lineages
genes
results
self-organization
ability
two
types
reconstitute
through
beyond
gastrulation
neurulation
early
organogenesis.
Cell stem cell,
Journal Year:
2022,
Volume and Issue:
29(10), P. 1445 - 1458.e8
Published: Sept. 8, 2022
Several
in
vitro
models
have
been
developed
to
recapitulate
mouse
embryogenesis
solely
from
embryonic
stem
cells
(ESCs).
Despite
mimicking
many
aspects
of
early
development,
they
fail
capture
the
interactions
between
and
extraembryonic
tissues.
To
overcome
this
difficulty,
we
a
ESC-based
model
that
reconstitutes
pluripotent
ESC
lineage
two
lineages
post-implantation
embryo
by
transcription-factor-mediated
induction.
This
unified
recapitulates
developmental
events
day
5.5
8.5,
including
gastrulation;
formation
anterior-posterior
axis,
brain,
beating
heart
structure;
development
tissues,
yolk
sac
chorion.
Comparing
single-cell
RNA
sequencing
individual
structures
with
time-matched
natural
embryos
identified
remarkably
similar
transcriptional
programs
across
but
also
showed
when
where
diverges
program.
Our
findings
demonstrate
an
extraordinary
plasticity
ESCs
self-organize
generate
whole-embryo-like
structure.
Cell Research,
Journal Year:
2023,
Volume and Issue:
33(9), P. 661 - 678
Published: July 17, 2023
Studies
of
cultured
embryos
have
provided
insights
into
human
peri-implantation
development.
However,
detailed
knowledge
lineage
development
as
well
underlying
mechanisms
remains
obscure.
Using
3D-cultured
embryos,
herein
we
report
a
complete
cell
atlas
the
early
post-implantation
lineages
and
decipher
cellular
composition
gene
signatures
epiblast
hypoblast
derivatives.
In
addition,
develop
an
embryo-like
assembloid
(E-assembloid)
by
assembling
naive
hESCs
extraembryonic
cells.
E-assembloids,
reveal
that
WNT,
BMP
Nodal
signaling
pathways
synergistically,
but
functionally
differently,
orchestrate
Specially,
dissect
mesoderm
endoderm
specifications.
Finally,
improved
E-assembloid
is
developed
to
recapitulate
tissue
architectures
in
pre-gastrulation
embryo.
Our
findings
provide
development,
offers
useful
model
disentangle
behaviors
interactions
drive
embryogenesis.
Cell stem cell,
Journal Year:
2023,
Volume and Issue:
30(6), P. 867 - 884.e11
Published: May 19, 2023
Gastruloids
are
3D
structures
generated
from
pluripotent
stem
cells
recapitulating
fundamental
principles
of
embryonic
pattern
formation.
Using
single-cell
genomic
analysis,
we
provide
a
resource
mapping
cell
states
and
types
during
gastruloid
development
compare
them
with
the
in
vivo
embryo.
We
developed
high-throughput
handling
imaging
pipeline
to
spatially
monitor
symmetry
breaking
report
an
early
spatial
variability
pluripotency
determining
binary
response
Wnt
activation.
Although
gastruloid-core
revert
pluripotency,
peripheral
become
primitive
streak-like.
These
two
populations
subsequently
break
radial
initiate
axial
elongation.
By
performing
compound
screen,
perturbing
thousands
gastruloids,
derive
phenotypic
landscape
infer
networks
genetic
interactions.
Finally,
using
dual
modulation,
improve
formation
anterior
existing
model.
This
work
provides
understand
how
gastruloids
develop
generate
complex
patterns
vitro.
Trends in Cell Biology,
Journal Year:
2021,
Volume and Issue:
31(9), P. 747 - 759
Published: July 22, 2021
3D
gastruloids,
aggregates
of
embryonic
stem
cells
that
recapitulate
key
aspects
gastrula-stage
embryos,
have
emerged
as
a
powerful
tool
to
study
the
early
stages
mammalian
post-implantation
development
in
vitro.
Owing
their
tractable
nature
and
relative
ease
by
which
they
can
be
generated
large
numbers,
gastruloids
provide
an
unparalleled
opportunity
normal
pathological
embryogenesis
from
bottom-up
perspective
high-throughput
manner.
Here,
we
review
how
gastruloid
models
exploited
deepen
our
understanding
development.
In
addition,
discuss
current
limitations,
potential
clinical
applications,
ethical
implications
this
emerging
model
system.
Development,
Journal Year:
2023,
Volume and Issue:
150(14)
Published: July 4, 2023
ABSTRACT
In
embryonic
stem
cell
(ESC)
models
for
early
development,
spatially
and
temporally
varying
patterns
of
signaling
types
emerge
spontaneously.
However,
mechanistic
insight
into
this
dynamic
self-organization
is
limited
by
a
lack
methods
spatiotemporal
control
signaling,
the
relevance
signal
dynamics
cell-to-cell
variability
to
pattern
emergence
remains
unknown.
Here,
we
combine
optogenetic
stimulation,
imaging
transcriptomic
approaches
study
human
ESCs
(hESC)
in
two-dimensional
(2D)
culture.
Morphogen
were
controlled
via
activation
canonical
Wnt/β-catenin
(optoWnt),
which
drove
broad
transcriptional
changes
mesendoderm
differentiation
at
high
efficiency
(>99%
cells).
When
activated
within
subpopulations,
optoWnt
induced
distinct
epithelial
mesenchymal
domains,
mediated
migration,
an
mesenchymal-like
transition
TGFβ
signaling.
Furthermore,
demonstrate
that
such
subpopulations
can
be
used
uncover
feedback
mechanisms
between
neighboring
types.
These
findings
reveal
Wnt
sufficient
generate
tissue-scale
patterning
establish
hESC
model
system
investigating
relevant
embryogenesis.