Endocrine Journal,
Journal Year:
2024,
Volume and Issue:
72(2), P. 205 - 219
Published: Dec. 13, 2024
The
ferroptosis
of
osteoblasts
has
been
demonstrated
to
play
a
significant
role
in
the
development
steroid-induced
osteonecrosis
femoral
head
(SONFH).
Additionally,
microRNAs
(miRNAs)
have
identified
as
regulators
SONFH
progression.
However,
precise
miRNAs
regulation
osteoblast
remains
unclear.
This
study
explored
exosomal
miR-150-3p,
derived
from
bone
marrow
mesenchymal
stem
cells
(BMSCs),
SONFH.
Dexamethasone
(DEX)
was
used
treat
induce
ferroptosis.
BMSCs
exosomes
with
different
levels
miR-150-3p
were
introduced
into
co-culture
cells.
To
verify
targeting
relationship
between
growth
factor
independence
1
(Gfi1)
and
promoter,
well
beta-transducin
repeat
containing
E3
ubiquitin
protein
ligase
(BTRC),
respectively,
chromatin
immunoprecipitation
(ChIP),
RNA
(RIP),
dual
luciferase
assays
employed.
It
found
that
BMSCs-Exos-miR-150-3p
mitigated
DEX-triggered
osteoblasts.
MiR-150-3p
directly
targeted
BTRC,
leading
its
downregulation
BTRC/Nuclear
erythroid
2-related
2
(Nrf2)
pathway
involved
inhibition
DEX-induced
by
BMSCs-Exos-miR-150-3p.
Overexpression
BTRC
reversed
inhibitory
effect
In
rat
model,
alleviated
through
BTRC/Nrf2.
addition,
Gfi1
bonded
promoter
inhibited
transcription.
silencing
elevated
improves
cell
viability
BMSCs.
conclusion,
our
results
suggest
alleviates
suppressing
BTRC/Nrf2
may
be
potential
target
for
treatment.
Stem Cell Research & Therapy,
Journal Year:
2025,
Volume and Issue:
16(1)
Published: Feb. 4, 2025
Abstract
Type
1
diabetes
mellitus
(T1DM)
is
characterized
by
progressive
β-cell
death,
leading
to
loss
and
insufficient
insulin
secretion.
Mesenchymal
stem
cells
(MSCs)
transplantation
currently
one
of
the
most
promising
methods
for
replacement
therapy.
However,
recent
studies
have
shown
that
ferroptosis
not
only
key
mechanisms
but
also
reasons
extensive
cell
death
within
a
short
period
time
after
MSCs
transplantation.
Ferroptosis
new
type
regulated
(RCD)
iron-dependent
accumulation
lipid
peroxides.
Due
weak
antioxidant
capacity
β-cells,
they
are
susceptible
cytotoxic
stimuli
such
as
oxidative
stress
(OS),
therefore
ferroptosis.
Transplanted
extremely
perturbations
in
their
microenvironment,
especially
OS,
which
can
weaken
induce
through
In
pathophysiological
process
T1DM,
large
amount
reactive
oxygen
species
(ROS)
produced,
causing
OS.
Therefore,
targeting
may
be
way
protect
β-cells
improve
therapeutic
effect
This
review
reviews
research
related
MSCs,
summarizes
developed
strategies
help
inhibit
study
aims
understand
mechanism
transplantation,
emphasize
importance
protecting
improving
survival
function
transplanted
provide
direction
therapy
T1DM
future.
Molecular Neurodegeneration,
Journal Year:
2024,
Volume and Issue:
19(1)
Published: April 19, 2024
Abstract
The
unprecedented
pandemic
of
COVID-19
swept
millions
lives
in
a
short
period,
yet
its
menace
continues
among
survivors
the
form
post-COVID
syndrome.
An
exponentially
growing
number
suffer
from
cognitive
impairment,
with
compelling
evidence
trajectory
accelerated
aging
and
neurodegeneration.
novel
enigmatic
nature
this
yet-to-unfold
pathology
demands
extensive
research
seeking
answers
for
both
molecular
underpinnings
potential
therapeutic
targets.
Ferroptosis,
an
iron-dependent
cell
death,
is
strongly
proposed
underlying
mechanism
post-COVID-19
neurodegeneration
discourse.
incites
neuroinflammation,
iron
dysregulation,
reactive
oxygen
species
(ROS)
accumulation,
antioxidant
system
repression,
renin-angiotensin
(RAS)
disruption,
clock
gene
alteration.
These
events
pave
way
ferroptosis,
which
shows
signature
COVID-19,
premature
aging,
neurodegenerative
disorders.
In
search
treatment,
melatonin
shines
as
promising
ferroptosis
inhibitor
repeatedly
reported
safety
tolerability.
According
to
various
studies,
has
proven
efficacy
attenuating
severity
certain
manifestations,
validating
reputation
anti-viral
compound.
Melatonin
well-documented
anti-aging
properties
combating
neurodegenerative-related
pathologies.
can
block
leading
since
it
efficient
anti-inflammatory,
chelator,
antioxidant,
angiotensin
II
antagonist,
regulator.
Therefore,
we
propose
culprit
behind
melatonin,
well-fitting
inhibitor,
treatment.
Journal of Cellular Physiology,
Journal Year:
2024,
Volume and Issue:
239(5)
Published: March 13, 2024
With
the
prevalence
of
coronavirus
disease
2019,
administration
glucocorticoids
(GCs)
has
become
more
widespread.
Treatment
with
high-dose
GCs
leads
to
a
variety
problems,
which
steroid-induced
osteonecrosis
femoral
head
(SONFH)
is
most
concerning.
Since
hypoxia-inducible
factor
1α
(HIF-1α)
key
in
cartilage
development
and
homeostasis,
it
may
play
an
important
role
SONFH.
In
this
study,
SONFH
models
were
established
using
methylprednisolone
(MPS)
mouse
its
proliferating
chondrocytes
investigate
HIF-1α
differentiation,
extracellular
matrix
(ECM)
apoptosis
glycolysis
mice.
The
results
showed
that
MPS
successfully
induced
vivo
vitro,
MPS-treated
demonstrated
disturbed
ECM
significantly
increased
chondrocyte
rate
level.
However,
compared
normal
mice,
not
only
expression
genes
related
collagens
glycolysis,
but
also
did
demonstrate
significant
differences
mice
co-treated
inhibitor.
And
effects
observed
activator-treated
similar
those
by
MPS.
degraded
upregulating
downstream
target
metalloproteinases.
activator/inhibitor
endoplasmic
reticulum
stress
(ERS)
pathway
revealed
high
was
ERS
pathway,
affected
HIF-1α.
Furthermore,
glucose
metabolism
increasing
glycolysis-related
genes.
conclusion,
plays
vital
pathogenesis
regulating
apoptosis,
glycolysis.
BMC Musculoskeletal Disorders,
Journal Year:
2025,
Volume and Issue:
26(1)
Published: Feb. 6, 2025
Recent
studies
highlight
the
role
of
H-type
vasculature
in
bone
regeneration.
This
study,
based
on
single-cell
RNA
sequencing
(scRNA-seq),
aims
to
explore
changes
endothelial
cells
(H_ECs)
osteonecrosis
femoral
head
(ONFH)
and
hip
osteoarthritis
(HOA),
focusing
death
modes
such
as
ferroptosis,
pyroptosis,
parthanatos.
We
re-analyzed
scRNA-seq
data
samples
publicly
available
2022.
study
selected
nine
(3
each
from
HOA,
ONFH
stage
3
A,
4).
CD31
+
EMCN
were
classified
H_ECs.
Molecular
differences
assessed
using
Gene
Ontology
KEGG
analysis.
Hypoxia,
parthanatos
indices
calculated,
transcription
factors
predicted
SENIC.
Cell
communication
was
analyzed
with
CellChat.
After
integrating
9
samples,
14
cell
types
identified:
B
cells,
Mesenchymal
stem
Osteoblasts,
Endothelial
Monocytes,
T
NK
Fibroblasts,
Macrophages,
Common
myeloid
progenitors,
Chondrocytes,
Myelocytes,
Osteoclasts,
Pericytes.
The
number
H_ECs
decreased
necrosis
severity.
showed
higher
angiogenic
capacity
but
lower
stress
resistance
compared
other
cells.
Angiogenic
necrotic
accompanied
by
an
elevation
inflammation
levels.
hypoxia
index
higher,
ferroptosis
increased
A
stages
4.
No
change
observed
pyroptosis.
analysis
revealed
downregulation
SLIT3-ROBO4
signaling
during
necrosis.
show
molecular
Ferroptosis
contribute
demise
ONFH,
pericytes
fibroblasts
supporting
H_EC
angiogenesis.
Communications Biology,
Journal Year:
2025,
Volume and Issue:
8(1)
Published: March 8, 2025
Melatonin
is
widely
observed
in
the
female
reproductive
system
and
regulates
trophoblast
cell
functions,
but
its
effects
on
embryo
implantation
underlying
mechanisms
are
not
well
understood.
By
constructing
an
vitro
culture
model,
we
found
that
melatonin
enhances
migration
human
mouse
cells.
It
also
significantly
promoted
HTR-8/SVneo
proliferation,
inhibited
apoptosis,
enhanced
migration,
mitigated
oxidative
damage.
Further
investigation
revealed
increased
rate
of
spheroids
by
promotes
epithelial-mesenchymal
transition
(EMT)
via
growth
differentiation
factor
15
(GDF15)–mothers
against
decapentaplegic
homolog
2/3
(SMAD2/3)
pathway.
Additionally,
levels
glutathione
peroxidase
4
(GPX4)
(GSH)
cells
upregulating
expression
GDF15,
inhibiting
reactive
oxygen
species
(ROS)
accumulation,
increasing
mitochondrial
membrane
potential,
thus
suppressing
apoptosis
during
stress.
In
conclusion,
EMT
GDF15-SMAD2/3
pathway
partially
induces
GPX4
through
GDF15
to
enhance
damage
resistance
These
findings
highlight
melatonin's
regulatory
role
suggest
new
avenues
for
exploring
biological
reproduction
clinical
applications.
GDF15-mediated
activation
SMAD2/3
Journal of Orthopaedic Surgery and Research,
Journal Year:
2025,
Volume and Issue:
20(1)
Published: March 18, 2025
Differentiation
of
bone
marrow
mesenchymal
stem
cells
(BMSCs)
is
pivotal
in
the
pathogenesis
steroid-induced
femoral
head
osteonecrosis.
Icariin,
an
active
ingredient
Epimedii
herba,
has
potential
to
regulate
osteogenic
differentiation
BMSCs.
Nevertheless,
related
mechanism
still
unclear.
The
study
aimed
explore
whether
icariin
can
affect
by
activating
PI3K/AKT
signaling
alter
UTX
and
EZH2
expression
thus
regulating
osteogenesis-related
genes
BMSCs
were
collected
from
Sprague
Dawley
rats
identified
measuring
positive
ratios
cell
markers
using
flow
cytometry.
Cells
treated
with
1
μmol/L
dexamethasone
(DEX)
for
24
h
or
without
0.1–10
μM
treatment.
Cell
counting
Kit-8
(CCK-8)
assays
cytometry
analyses
performed
measure
viability
apoptosis.
Western
blotting
was
conducted
measurement
apoptotic
markers,
factors
involved
PI3K/AKT-UTX/EZH2
pathway,
adipogenesis-related
factors.
Alizarin
red
S
staining
Oil-red
O
effect
DEX,
icariin,
overexpression,
knockdown
on
adipogenic
Icariin
ameliorated
DEX-induced
rat
BMSC
injury.
activated
signaling,
thereby
upregulating
phosphorylated
levels
while
inhibiting
H3K27me3
expression.
Additionally,
promoted
inhibited
Importantly,
overexpressing
silencing
exerted
similar
effects
as
did.
promotes
DEX-treated
upregulate
inhibit
EZH2,
finally
inducing
depletion.