Frontiers in Cardiovascular Medicine,
Journal Year:
2024,
Volume and Issue:
11
Published: April 30, 2024
Transcription
factors
(TFs)
constitute
an
essential
component
of
epigenetic
regulation.
They
contribute
to
the
progression
vascular
diseases
by
regulating
gene
expression
in
several
diseases.
Recently,
numerous
regulatory
mechanisms
related
pathology,
ranging
from
general
TFs
that
are
continuously
activated
histiocyte-specific
under
specific
circumstances,
have
been
studied.
participate
vascular-related
epigenetically
endothelial
cells
(VECs)
and
smooth
muscle
(VSMCs).
The
Krüppel-like
family
(KLF)
TF
is
widely
recognized
as
foremost
regulator
KLF11
prevents
aneurysm
inhibiting
apoptosis
VSMCs
enhancing
their
contractile
function.
presence
KLF4,
another
crucial
member,
suppresses
atherosclerosis
(AS)
pulmonary
hypertension
attenuating
formation
VSMCs-derived
foam
cells,
ameliorating
dysfunction,
inducing
vasodilatory
effects.
However,
mechanism
underlying
regulation
has
remained
elusive.
present
study
categorized
involved
shed
light
on
potential
pathogenesis
diseases,
provide
novel
insights
into
diagnosis
treatment.
Science,
Journal Year:
2024,
Volume and Issue:
383(6687)
Published: March 7, 2024
Lineage
plasticity-a
state
of
dual
fate
expression-is
required
to
release
stem
cells
from
their
niche
constraints
and
redirect
them
tissue
compartments
where
they
are
most
needed.
In
this
work,
we
found
that
without
resolving
lineage
plasticity,
skin
cannot
effectively
generate
each
in
vitro
nor
regrow
hair
repair
wounded
epidermis
vivo.
A
small-molecule
screen
unearthed
retinoic
acid
as
a
critical
regulator.
Combining
high-throughput
approaches,
cell
culture,
vivo
mouse
genetics,
dissected
its
roles
regeneration.
We
is
made
locally
follicle
niches,
levels
determine
identity
usage.
Our
findings
have
therapeutic
implications
for
growth
well
chronic
wounds
cancers,
plasticity
unresolved.
Cell Metabolism,
Journal Year:
2024,
Volume and Issue:
36(8), P. 1858 - 1881.e23
Published: July 2, 2024
A
mechanistic
connection
between
aging
and
development
is
largely
unexplored.
Through
profiling
age-related
chromatin
transcriptional
changes
across
22
murine
cell
types,
analyzed
alongside
previous
mouse
human
organismal
maturation
datasets,
we
uncovered
a
transcription
factor
binding
site
(TFBS)
signature
common
to
both
processes.
Early-life
candidate
cis-regulatory
elements
(cCREs),
progressively
losing
accessibility
during
aging,
are
enriched
for
cell-type
identity
TFBSs.
Conversely,
cCREs
gaining
throughout
life
have
lower
abundance
of
TFBSs
but
elevated
activator
protein
1
(AP-1)
levels.
We
implicate
TF
redistribution
toward
these
AP-1
TFBS-rich
cCREs,
in
synergy
with
mild
downregulation
TFs,
as
driving
early-life
cCRE
loss
altering
developmental
metabolic
gene
expression.
Such
remodeling
can
be
triggered
by
elevating
or
depleting
repressive
H3K27me3.
propose
that
AP-1-linked
opening
drives
disrupting
thereby
reprogramming
transcriptome
function,
mechanism
hijacked
through
ongoing
opening.
Journal of Translational Medicine,
Journal Year:
2024,
Volume and Issue:
22(1)
Published: Aug. 22, 2024
The
skin
epidermis
is
continually
influenced
by
a
myriad
of
internal
and
external
elements.
At
its
basal
layer
reside
epidermal
stem
cells,
which
fuels
renovation
hair
regeneration
with
powerful
self-renewal
ability,
as
well
keeping
diverse
signals
that
direct
their
activity
under
surveillance
quick
response.
importance
cells
in
wound
healing
immune-related
conditions
has
been
increasingly
recognized,
potential
for
clinical
applications
attracting
attention.
In
this
review,
we
delve
into
recent
advancements
the
various
physiological
psychological
factors
govern
distinct
cell
populations,
including
stress,
mechanical
forces,
chronic
aging,
circadian
rhythm,
providing
an
overview
current
methodological
approaches.
Furthermore,
discuss
pathogenic
role
disorders
applications.
Frontiers in Cell and Developmental Biology,
Journal Year:
2025,
Volume and Issue:
13
Published: Jan. 24, 2025
MLL4,
also
known
as
KMT2D,
is
a
histone
methyltransferase
that
acts
an
important
epigenetic
regulator
in
various
organogenesis
programs.
Mutations
the
MLL4
gene
are
major
cause
of
Kabuki
syndrome,
human
developmental
disorder
involves
craniofacial
birth
defects,
including
anomalies
palate.
This
study
aimed
to
investigate
role
and
underlying
mechanisms
development
growth
We
generated
novel
conditional
knockout
(cKO)
mouse
model
with
tissue-specific
deletion
Mll4
palatal
mesenchyme.
Using
micro-computed
tomography
(CT),
histological
analysis,
cell
mechanism
assays,
expression
profiling,
we
examined
palate
-cKO
mice.
Gross
examination
at
adult
stages
revealed
mild
midfacial
hypoplasia
midline
defects
mice,
widened
midpalatal
suture
disrupted
rugae
pattern.
Micro-CT-based
time-course
skeletal
analysis
during
postnatal
palatogenesis
through
adulthood
demonstrated
transverse
deficit
overall
width
Whole-mount
staining
perinatal
identified
mice
emerged
early
1
day
prior
birth,
presenting
suture,
accompanied
by
increased
apoptosis
Genome-wide
mRNA
tissue
essential
for
timely
cartilage
genes,
such
Col2a1
Acan
,
birth.
Immunofluorescence
osteochondral
differentiation
markers
marked
decrease
chondrogenic
marker
COL2A1,
while
osteogenic
RUNX2
remained
unchanged,
suture.
Additionally,
SOX9,
master
chondrogenesis,
exhibited
significant
protein
expression.
Indeed,
retardation
Taken
together,
our
results
demonstrate
orchestrating
key
cellular
molecular
events
ensure
proper
growth.
bioRxiv (Cold Spring Harbor Laboratory),
Journal Year:
2025,
Volume and Issue:
unknown
Published: Feb. 27, 2025
Basal
cell
carcinoma
(BCC),
the
most
common
human
cancer,
is
driven
by
hyperactivation
of
Hedgehog
Smoothened
(SMO)
and
GLI
transcription.
Gαs
protein
kinase
A
(PKA)
negatively
regulate
signaling,
offering
an
alternative
BCC
development
treatment
pathway.
Here,
using
histology
alongside
bulk
single-cell
RNA
sequencing,
we
find
that
mouse
BCC-like
tumors
originate
from
pathway
inactivation
are
strikingly
similar
to
those
canonical
SMO.
Interestingly,
mutations
reduce
PKA
activity
present
in
BCC.
Tumors
independent
regulators
SMO
GPR161,
establishing
them
as
SMO-independent
oncogenic
signaling
model.
Finally,
demonstrate
activation
Gαs-coupled
adenosine
2B
receptor
counteracts
SMO,
reducing
tumor
formation
a
potential
therapeutic
strategy
for