Antioxidants,
Journal Year:
2022,
Volume and Issue:
11(3), P. 583 - 583
Published: March 18, 2022
Ruscogenin
(RUS),
a
natural
steroidal
sapogenin,
exerts
various
biological
activities.
However,
its
effectiveness
for
preventing
myocardial
ischemia
(MI)
and
molecular
mechanisms
need
further
clarification.
The
model
of
MI
mice
oxygen-glucose
deprivation-induced
cardiomyocytes
injury
was
performed.
RUS
significantly
alleviated
MI,
as
evidenced
by
decreased
infarct
size,
ameliorated
biochemical
indicators
cardiac
pathological
features,
markedly
inhibited
ferroptosis
means
the
up-regulation
GPX4
down-regulation
ACSL4
FLC.
Simultaneously,
notably
mitigated
cell
oxidative
stress,
in
vitro.
Subsequently,
HPLC-Q-TOF/MS-based
metabolomics
identified
BCAT1/BCAT2
possible
regulatory
enzymes
responsible
cardioprotection
RUS.
Importantly,
treatment
increased
expression
BCAT1
BCAT2
MI.
Furthermore,
we
found
that
or
siRNA
viability,
promoted
ferroptosis,
Keap1
expression,
induced
Nrf2
HO-1
degradation
cardiomyocytes.
Conversely,
overexpression
activated
Keap1/Nrf2/HO-1
pathway.
Moreover,
pathway
whereas
partially
weakened
protective
effects
RUS,
suggesting
might
suppress
through
BCAT2.
Overall,
this
study
demonstrated
could
alleviate
MI-induced
activation
exerted
cardioprotective
via
BCAT1/BCAT2.
Redox Biology,
Journal Year:
2022,
Volume and Issue:
54, P. 102365 - 102365
Published: June 10, 2022
Ferroptosis
is
an
iron-dependent
form
of
cell
death,
which
triggered
by
disturbed
membrane
integrity
due
to
overproduction
lipid
peroxides.
Induction
ferroptosis
comprises
several
alterations,
i.e.
altered
iron
metabolism,
response
oxidative
stress,
or
peroxide
production.
At
the
physiological
level
transcription,
translation,
and
microRNAs
add
appearance
and/or
activity
building
blocks
that
negatively
positively
balance
ferroptosis.
contributes
tissue
damage
in
case
of,
e.g.,
brain
heart
injury
but
may
be
desirable
overcome
chemotherapy
resistance.
For
a
more
complete
picture,
it
crucial
also
consider
cellular
microenvironment,
during
inflammation
tumor
context
dominated
hypoxia.
This
graphical
review
visualizes
basic
mechanisms
ferroptosis,
categorizes
general
inducers
inhibitors
puts
focus
on
microRNAs,
homeostasis,
hypoxia
as
regulatory
components.
Cellular and Molecular Neurobiology,
Journal Year:
2023,
Volume and Issue:
43(7), P. 3329 - 3341
Published: July 17, 2023
Abstract
Ferroptosis
is
a
new
form
of
programmed
cell
death,
which
characterized
by
the
iron-dependent
accumulation
lipid
peroxidation
and
increase
ROS,
resulting
in
oxidative
stress
death.
Iron,
lipid,
multiple
signaling
pathways
precisely
control
occurrence
implementation
ferroptosis.
The
mainly
include
Nrf2/HO-1
pathway,
p62/Keap1/Nrf2
pathway.
Activating
pathway
inhibits
promotes
Furthermore,
some
factors
also
participate
ferroptosis
under
hypoxia,
such
as
HIF-1,
NCOA4,
DMT1.
Meanwhile,
related
with
hypoxia-related
diseases,
MIRI,
cancers,
AKI.
Accordingly,
appears
to
be
therapeutic
target
for
diseases.
Medicinal Research Reviews,
Journal Year:
2023,
Volume and Issue:
43(3), P. 614 - 682
Published: Jan. 19, 2023
Abstract
Ferroptosis
is
an
iron‐dependent
cell
death
program
that
characterized
by
excessive
lipid
peroxidation.
Triggering
ferroptosis
has
been
proposed
as
a
promising
strategy
to
fight
cancer
and
overcome
drug
resistance
in
antitumor
therapy.
Understanding
the
molecular
interactions
structural
features
of
ferroptosis‐inducing
compounds
might
therefore
open
door
efficient
pharmacological
strategies
against
aggressive,
metastatic,
therapy‐resistant
cancer.
We
here
summarize
mechanisms
requirements
small
molecules
target
central
players
ferroptosis.
Focus
placed
on
(i)
glutathione
peroxidase
(GPX)
4,
only
GPX
isoenzyme
detoxifies
complex
membrane‐bound
hydroperoxides,
(ii)
cystine/glutamate
antiporter
system
X
c
−
for
regeneration,
(iii)
redox‐protective
transcription
factor
nuclear
erythroid
2‐related
(NRF2),
(iv)
GPX4
repression
combination
with
induced
heme
degradation
via
oxygenase‐1.
deduce
common
ferroptotic
activity
highlight
challenges
development.
Moreover,
we
critically
discuss
potential
natural
products
lead
structures
provide
comprehensive
overview
structurally
diverse
biogenic
bioinspired
trigger
iron
oxidation,
inhibition
thioredoxin/thioredoxin
reductase
or
less
defined
modes
action.
Oxidative Medicine and Cellular Longevity,
Journal Year:
2022,
Volume and Issue:
2022, P. 1 - 31
Published: May 29, 2022
The
exact
mechanism
of
atrial
fibrillation
(AF)
has
been
not
well
elucidated.
Ferroptosis
is
an
iron-dependent
cell
death
due
to
excessive
accumulation
peroxidized
polyunsaturated
fatty
acids.
However,
the
molecular
underlying
AF
and
ferroptosis
never
reported.
Here,
we
established
rapid
pacing
model
in
vivo
vitro
investigate
relationship
between
ferroptosis.
In
canine
pacing,
content
malondialdehyde
total
ions
tissue
Pacing
group
was
significantly
increased
exosome
inhibitor
GW4869
reduced
ferroptosis,
fibrosis,
inflammation
improved
histological
electrophysiological
remodeling.
h9c2
cells,
expression
antioxidative
stress
genes
associated
with
presented
sequential
changes
proteins
involved
such
as
FTH1,
SLC7A11,
GPX4
were
gradually
depleted.
Furthermore,
cardiac
fibroblast-derived
exosomes
(CF-exos)
exacerbated
cells
pretreated
pacing-CF-exos
alleviated
injury
cells.
mechanism,
our
results
demonstrated
that
highly
expressed
miR-23a-3p
by
informatics
analysis
experimental
verification.
Inhibitor-miR-23a-3p
protected
from
accompanying
upregulation
SLC7A11.
addition,
SLC7A11
shown
be
target
gene
miR-23a-3p.
conclusion,
suggest
CF-exos-miR-23a-3p
may
promote
development
a
persistent
direction
could
prevented
intervening
exosomal
miRNAs
reduce
oxidative
Frontiers in Pharmacology,
Journal Year:
2022,
Volume and Issue:
13
Published: May 24, 2022
Myocardial
infarction
(MI)
is
a
coronary
artery-related
disease
and
ranks
as
the
leading
cause
of
sudden
death
globally.
Resveratrol
(Res)
bioactive
component
has
presented
antioxidant,
anti-inflammatory
anti-microbial
properties.
However,
effect
Res
on
ferroptosis
during
MI
progression
remains
elusive.
Here,
we
aimed
to
explore
function
in
regulation
myocardial
injury
MI.
We
observed
that
treatment
attenuated
MI-related
myocardium
fibrosis
rats.
The
expression
collagen
1
α-SMA
was
induced
rats,
which
could
decrease
expression.
Treatment
suppressed
levels
IL-6
IL-1β
GSH
were
inhibited
MDA,
lipid
ROS,
Fe2+
reverse
phenotypes.
Meanwhile,
GPX4
SLC7A11
reduced
while
rescue
model.
relieved
oxygen-glucose
deprivation
(OGD)-induced
cardiomyocyte
injury.
Importantly,
repressed
OGD-induced
vitro.
Mechanically,
identified
able
enhance
by
inducing
KAT5
confirmed
alleviated
ferroptosis.
depletion
or
Thus,
concluded
inhibiting
via
KAT5/GPX4
infarction.
Our
finding
provides
new
evidence
potential
therapeutic
targeting
Naunyn-Schmiedeberg s Archives of Pharmacology,
Journal Year:
2022,
Volume and Issue:
395(8), P. 945 - 962
Published: April 27, 2022
Recently,
hypoglycemic
drugs
belonging
to
sodium-glucose
cotransporter
2
inhibitors
(SGLT2i)
have
generated
significant
interest
due
their
clear
cardiovascular
benefits
for
heart
failure
with
preserved
ejection
fraction
(HFpEF)
since
there
are
no
effective
that
may
improve
clinical
outcomes
these
patients
over
a
prolonged
period.
But,
the
underlying
mechanisms
remain
unclear,
particularly
its
effects
on
ferroptosis,
newly
defined
mechanism
of
iron-dependent
non-apoptotic
cell
death
during
(HF).
Here,
proteomics,
we
demonstrated
ferroptosis
might
be
key
in
rat
model
high-salt
diet-induced
HFpEF,
characterized
by
iron
overloading
and
lipid
peroxidation,
which
was
blocked
following
treatment
canagliflozin.
Data
available
via
ProteomeXchange
identifier
PXD029031.
The
evaluated
levels
acyl-CoA
synthetase
long-chain
family
member
4,
glutathione
peroxidase
ferritin
heavy
chain
1,
transferrin
receptor,
Ferroportin
iron,
glutathione,
malondialdehyde,
4-hydroxy-trans-2-nonenal.
These
findings
highlight
fact
targeting
serve
as
cardioprotective
strategy
HFpEF
prevention
suggest
canagliflozin
exert
partly
mitigation
ferroptosis.
Frontiers in Pharmacology,
Journal Year:
2022,
Volume and Issue:
13
Published: Sept. 8, 2022
Ferritinophagy
is
a
type
of
autophagy
mediated
by
nuclear
receptor
activator
4
(NCOA4),
which
plays
role
in
inducing
ferroptosis
regulating
iron
homeostasis
and
producing
reactive
oxygen
species
cells.
Under
physiological
conditions,
ferritinophagy
maintains
the
stability
intracellular
release
free
iron.
Studies
have
demonstrated
that
necessary
to
induce
ferroptosis;
however,
under
pathological
excessive
results
large
quantities,
leads
lipid
peroxidation
iron-dependent
cell
death,
known
as
ferroptosis.
has
become
an
area
interest
recent
years.
We
here
review
mechanism
its
association
with
various
diseases
provide
reference
for
future
clinical
scientific
studies.