genesis,
Journal Year:
2025,
Volume and Issue:
63(2)
Published: April 1, 2025
ABSTRACT
Single‐cell
RNA
sequencing
(scRNA‐seq)
is
a
rapidly
developing
and
useful
technique
for
elucidating
biological
mechanisms
characterizing
individual
cells.
Tens
of
millions
patients
worldwide
suffer
from
heart
injuries
other
types
disease.
Neonatal
mammalian
hearts
certain
adult
vertebrate
species,
such
as
zebrafish,
can
fully
regenerate
after
myocardial
injury.
However,
the
unable
to
damaged
myocardium.
scRNA‐seq
provides
many
new
insights
into
pathological
normal
facilitates
our
understanding
cellular
responses
cardiac
injury
repair
at
different
stages,
which
may
provide
critical
clues
effective
therapies
regeneration.
In
this
review,
we
summarize
application
in
development
regeneration
describe
how
important
molecular
be
harnessed
promote
Journal of Molecular and Cellular Cardiology,
Journal Year:
2024,
Volume and Issue:
191, P. 7 - 11
Published: April 11, 2024
Neonatal
mouse
hearts
can
regenerate
post-injury,
unlike
adult
that
form
fibrotic
scars.
The
mechanism
of
thyroid
hormone
signaling
in
cardiac
regeneration
warrants
further
study.
We
found
triiodothyronine
impairs
cardiomyocyte
proliferation
and
heart
neonatal
mice
after
apical
resection.
Single-cell
RNA-Sequencing
on
CD45-positive
leukocytes
revealed
a
pro-inflammatory
phenotype
monocytes/macrophages
treatment.
Furthermore,
we
observed
was
inhibited
by
medium
from
triiodothyronine-treated
macrophages,
while
itself
had
no
direct
effect
the
cardiomyocytes
vitro.
Our
study
unveils
novel
role
mediating
inflammatory
response
hinders
regeneration.
Frontiers in Cardiovascular Medicine,
Journal Year:
2025,
Volume and Issue:
11
Published: Jan. 6, 2025
Fibroblasts
in
the
fibrotic
heart
exhibit
a
heterogeneous
biological
behavior.
The
specific
subsets
of
fibroblasts
that
contribute
to
progressive
cardiac
fibrosis
remain
unrevealed.
Our
aim
is
identify
fibroblast
(FB)
most
significantly
promote
and
related
critical
genes
as
biomarkers
for
ischemic
disease.
single
nuclei
RNA
sequencing
(snRNA-seq)
bulk
datasets
used
this
study
were
obtained
from
Gene
Expression
Omnibus
(GEO).
activity
gene
sets
was
quantified
each
FB
cluster
using
AddmoleculeScore
function.
Differentially
expressed
(DEGs)
cell
with
highest
transcription
dynamics
identified
integrated
data
analysis.
Multiple
machine
learning
models
employed
optimal
panel
diagnosing
disease
(IHD)
based
on
intersected
DEGs.
effectiveness
robustness
gene-derived
diagnostic
tool
validated
two
independent
IHD
cohorts.Subsequently,
we
signature
rat
post-myocardial
infarction
failure
model.
We
conducted
an
analysis
high-quality
snRNA-seq
3
4
sarcoidosis
samples,
resulting
identification
16
clusters.
Cluster2
exhibited
terms
fibrosis-related
transcriptome
dynamics.
characteristic
expression
profile
subset
indicated
upregulation
COL1A1
several
pro-fibrotic
factors,
including
CCDC102B,
GUCY1A3,
TEX41,
NREP,
TCAP,
WISP,
while
showing
downregulation
NR4A1,
endogenous
inhibitor
TGF-β
pathway.
Consequently,
designated
subgroup
COL1A1hiNR4A1low
FB.
set
enrichment
(GSEA)
shows
pattern
closer
pathways
associated
fibrosis.
Through
learning,
ten
feature
selected
construct
IHD.
new
cohort
rats.
possess
heightened
capability
promoting
Additionally,
it
offers
molecular
insights
into
mechanisms
underlying
regulation
Furthermore,
COL1A1hiNR4A1
could
serve
valuable
tools
Biomedicines,
Journal Year:
2025,
Volume and Issue:
13(2), P. 474 - 474
Published: Feb. 14, 2025
Background:
The
extracellular
matrix
(ECM)
plays
a
critical
role
in
the
proper
regeneration
of
skeletal
muscle.
ECM
remodeling
has
been
reported
muscle
chronic
obstructive
pulmonary
disease
(COPD),
while
mechanisms
remain
poorly
understood.
Methods:
In
this
study,
we
examined
dynamic
interplay
between
components
and
enzymes
COPD
cigarette
smoke
(CS)
extract-treated
C2C12
cells.
cells
were
further
used
to
evaluate
disintegrin
metalloproteinase
with
thrombospondin
motif
4
(ADAMTS4)
myogenesis.
Results:
Chronic
CS
exposure
induced
development
comorbid
sarcopenia
C57BL/6J
mice.
Muscle
fibrosis
was
observed
gastrocnemius
CS-exposed
mice,
accompanied
by
an
upregulation
protein
expression
but
downregulation
mRNA
levels
fibronectin
versican.
We
found
that
discrepancy
attributed
aberrant
secretion
some
belonging
metalloproteinases
ADAMTS
proteases,
especially
ADAMTS4.
reduced
ADAMTS4
muscles
cells,
Adamts4
knockdown
versican
accumulation
impeded
myogenic
process.
Conclusions:
Considering
recent
studies
have
indicated
impaired
COPD,
suggested
restrained
production
response
could
be
involved
damaged
through
regulating
COPD.
Targeting
may
benefit
rehabilitation
COPD-related
sarcopenia.
Nature Communications,
Journal Year:
2025,
Volume and Issue:
16(1)
Published: March 27, 2025
Heart
injury
has
been
characterized
by
the
irreversible
loss
of
cardiomyocytes
comprising
contractile
tissues
heart
and
thus
strategies
enabling
adult
cardiomyocyte
proliferation
are
highly
desired
for
treating
various
diseases.
Here,
we
test
ability
human
induced
pluripotent
stem
cell-derived
primitive
macrophages
(hiPMs)
their
conditioned
medium
(hiPM-cm)
to
promote
enhance
cardiac
regeneration
in
mice.
We
find
that
hiPMs
proliferation,
which
is
recapitulated
hiPM-cm
through
activation
multiple
pro-proliferative
pathways,
a
secreted
proteome
analysis
identifies
five
proteins
participating
this
activation.
Subsequent
vivo
experiments
show
promotes
Lastly,
enhances
improves
function
injured
mouse
hearts.
Together,
our
study
demonstrates
efficacy
using
promoting
serve
as
an
innovative
treatment
disease.
Reactivating
key
post-injury.
authors
from
iPSC-derived
induces
regeneration.