Experimental Eye Research,
Journal Year:
2021,
Volume and Issue:
205, P. 108491 - 108491
Published: Feb. 15, 2021
This
study
aimed
to
investigate
the
protective
effect
of
melatonin
on
corneal
epithelium
in
dry
eye
disease(DED)
and
explore
its
underlying
mechanism.
Human
epithelial(HCE)
cells
was
exposure
t-butylhydroperoxide(tBH),
C57BL/6
mice
were
injected
subcutaneous
scopolamine
imitate
DED.
Melatonin
used
both
vivo
vitro.
Cell
viability
detected
by
Counting
Kit-8
assay
Lactate
Dehydrogenase
Leakage.
The
change
cellular
reactive
oxygen
species
(ROS)
levels,
mitochondrial
membrane
potential
(MMP),
apoptosis
analyzed
flow
cytometry.
Western
blot
assays
immunofluorescence
carried
out
measure
protein
changes.
mRNA
expression
investigated
RNA
sequencing
(RNA-Seq)
quantitative
real-time
PCR.
autophagic
flux
observed
through
mCherry-GFP-LC3
transfection
electron
microscopy(TEM).
Clinical
parameters
defects,
conjunctival
goblet
cells,
tear
volume,
level
ocular
surface
inflammation
recorded.
able
reduce
excessive
ROS
production
maintain
function.
TEM
found
rescued
impaired
under
tBH.
Moreover,
significantly
preserved
cell
viability,
abolished
LDH
release,
decreased
apoptosis.
RNA-Seq
indicated
that
greatly
activating
hemeoxygenase-1
(HO-1)
expression.
Interestingly,
HO-1
ablation
largely
attenuated
effects.
Besides,
mouse
model,
intraperitoneal
injection
showed
improved
clinical
parameters,
inhibited
activated
NLRP3
cascade,
increased
density
volume.
Thus,
protects
epithelial
from
oxidative
damage,
normal
autophagy,
via
trigging
International Journal of Biological Sciences,
Journal Year:
2021,
Volume and Issue:
17(11), P. 2703 - 2717
Published: Jan. 1, 2021
Rationale:
Colorectal
cancer
(CRC)
is
a
common
malignant
tumor
of
the
digestive
system.
However,
efficacy
surgery
and
chemotherapy
limited.
Ferroptosis
an
iron-
reactive
oxygen
species
(ROS)-dependent
form
regulated
cell
death
(RCD)
plays
vital
role
in
suppression.
inducing
agents
have
been
studied
extensively
as
novel
promising
way
to
fight
against
therapy
resistant
cancers.
The
aim
this
study
investigate
mechanism
action
tagitinin
C
(TC),
natural
product,
ferroptosis
inducer
Methods:
response
CRC
cells
was
assessed
by
viability
assay,
clonogenic
transwell
migration
cycle
assay
apoptosis
assay.
Molecular
approaches
including
Western
blot,
RNA
sequencing,
quantitative
real-time
PCR
immunofluorescence
were
employed
well.
Results:
Tagitinin
C,
sesquiterpene
lactone
isolated
from
Tithonia
diversifolia,
inhibits
growth
colorectal
HCT116
cells,
induced
oxidative
cellular
microenvironment
resulting
cells.
C-induced
accompanied
with
attenuation
glutathione
(GSH)
levels
increased
lipid
peroxidation.
Mechanistically,
endoplasmic
reticulum
(ER)
stress
stress,
thus
activating
nuclear
translocation
factor
erythroid
2-related
2
(Nrf2).
As
downstream
gene
(effector)
Nrf2,
heme
oxygenase-1
(HO-1)
expression
significantly
treatment
C.
Upregulated
HO-1
led
increase
labile
iron
pool,
which
promoted
peroxidation,
meanwhile
showed
synergistic
anti-tumor
effect
together
erastin.
Conclusion:
In
summary,
we
provided
evidence
that
induces
has
through
ER
stress-mediated
activation
PERK-Nrf2-HO-1
signaling
pathway.
identified
inducer,
may
be
effective
chemosensitizer
can
expand
range
chemotherapeutic
agents.
Advanced Science,
Journal Year:
2023,
Volume and Issue:
10(26)
Published: July 12, 2023
In
recent
years,
the
incidence
of
gastrointestinal
cancers
is
increasing,
particularly
in
younger
population.
Effective
treatment
crucial
for
improving
patients'
survival
outcomes.
Programmed
cell
death,
regulated
by
various
genes,
plays
a
fundamental
role
growth
and
development
organisms.
It
also
critical
maintaining
tissue
organ
homeostasis
takes
part
multiple
pathological
processes.
addition
to
apoptosis,
there
are
other
types
programmed
such
as
ferroptosis,
necroptosis,
pyroptosis,
which
can
induce
severe
inflammatory
responses.
Notably,
besides
pyroptosis
contribute
occurrence
cancers.
This
review
aims
provide
comprehensive
summary
on
biological
roles
molecular
mechanisms
well
their
regulators
hope
open
up
new
paths
tumor
targeted
therapy
near
future.
Oncology Letters,
Journal Year:
2020,
Volume and Issue:
unknown
Published: March 3, 2020
Oral
squamous
cell
carcinoma
(OSCC)
is
the
leading
cause
of
mortality
for
oral
cancer.
Numerous
risk
factors
mainly
related
to
unhealthy
habits
and
responsible
chronic
inflammation
infections
have
been
recognized
as
predisposing
carcinogenesis.
Recently,
even
microbiota
alterations
associated
with
development
human
cancers.
In
particular,
some
specific
bacterial
strains
strongly
cancer
(Capnocytophaga
gingivalis,
Fusobacterium
spp.,
Streptococcus
Peptostreptococcus
Porphyromonas
gingivalis
Prevotella
spp.).
Several
hypotheses
proposed
explain
how
could
be
involved
in
pathogenesis
by
paying
attention
inflammation,
microbial
synthesis
cancerogenic
substances,
alteration
epithelial
barrier
integrity.
Based
on
knowledge
carcinogenic
effects
dysbiosis,
it
was
recently
suggested
that
probiotics
may
anti-tumoral
activity.
Nevertheless,
few
data
exist
regard
probiotic
On
this
basis,
association
between
dysbiosis
discussed
focusing
potential
benefits
administration
prevention.
Antioxidants,
Journal Year:
2020,
Volume and Issue:
9(3), P. 205 - 205
Published: March 2, 2020
In
this
study,
the
anti-ferroptosis
effects
of
catecholic
flavonol
quercetin
and
its
metabolite
Diels-Alder
anti-dimer
(QDAD)
were
studied
using
an
erastin-treated
bone
marrow-derived
mesenchymal
stem
cell
(bmMSCs)
model.
Quercetin
exhibited
higher
levels
than
QDAD,
as
indicated
by
4,4-difluoro-5-(4-phenyl-1,3-butadienyl)-4-bora-3a,4a-diaza-s-indacene-3-undecanoic
acid
(C11-BODIPY),
2′,7′-dichlorodihydrofluoroscein
diacetate
(H2DCFDA),
lactate
dehydrogenase
(LDH)
release,
counting
kit-8
(CCK-8),
flow
cytometric
assays.
To
understand
possible
pathways
involved,
reaction
product
with
1,1-diphenyl-2-picrylhydrazyl
radical
(DPPH●)
was
measured
ultra-performance
liquid-chromatography
coupled
electrospray-ionization
quadrupole
time-of-flight
tandem
mass
spectrometry
(UHPLC-ESI-Q-TOF-MS).
found
to
produce
same
clusters
molecular
ion
peaks
fragments
standard
QDAD.
Furthermore,
antioxidant
QDAD
compared
determining
their
2-phenyl-4,4,5,5-tetramethylimidazoline-1-oxyl-3-oxide
radical-scavenging,
Cu2+-reducing,
Fe3+-reducing,
lipid
peroxidation-scavenging,
DPPH●-scavenging
activities.
consistently
showed
lower
IC50
values
These
findings
indicate
that
can
protect
bmMSCs
from
erastin-induced
ferroptosis,
possibly
through
pathway.
The
pathway
convert
into
QDAD—an
inferior
ferroptosis-inhibitor
antioxidant.
weakening
has
highlighted
a
rule
for
predicting
relative
flavonols
dimer
metabolites.
Cells,
Journal Year:
2021,
Volume and Issue:
10(11), P. 2981 - 2981
Published: Nov. 2, 2021
Cancer
stem
cells
(CSCs)
are
a
distinct
subpopulation
of
tumor
with
cell-like
features.
Able
to
initiate
and
sustain
growth
mostly
resistant
anti-cancer
therapies,
they
thought
responsible
for
recurrence
metastasis.
Recent
accumulated
evidence
supports
that
iron
metabolism
the
recent
discovery
ferroptosis
constitutes
promising
new
lead
in
field
anti-CSC
therapeutic
strategies.
Indeed,
uptake,
efflux,
storage
regulation
pathways
all
over-engaged
microenvironment
suggesting
reprogramming
is
crucial
occurrence
cell
survival.
In
particular,
studies
have
highlighted
importance
maintenance
CSCs.
Furthermore,
high
concentration
found
CSCs,
as
compared
non-CSCs,
underlines
their
addiction.
line
this,
if
an
essential
macronutrient
nevertheless
highly
reactive,
it
represents
Achilles’
heel
by
inducing
death
therefore
providing
opportunities
target
this
review,
we
first
summarize
our
current
understanding
its
Then,
provide
overview
knowledge
discuss
role
autophagy
(regulation
of)
ferroptotic
pathways.
Finally,
potential
strategies
could
be
used
CSCs
treat
cancer.
Oxidative Medicine and Cellular Longevity,
Journal Year:
2022,
Volume and Issue:
2022, P. 1 - 26
Published: April 25, 2022
Ferroptosis,
a
novel
form
of
regulated
cell
death
characterized
by
disrupted
iron
metabolism
and
the
accumulation
lipid
peroxides,
has
exhibited
enormous
potential
in
therapy
cancer
particularly
clear
renal
carcinoma
(ccRCC).
Luteolin
(Lut),
natural
flavonoid
widely
existing
various
fruits
vegetables,
been
proven
to
exert
potent
anticancer
activity
vitro
vivo.
However,
previous
studies
on
mechanism
Lut
have
shown
apoptosis
but
not
ferroptosis.
In
present
study,
we
identified
that
substantially
inhibited
survival
ccRCC
vivo,
this
phenomenon
was
accompanied
excessively
increased
intracellular
Fe2+
abnormal
depletion
GSH.
addition,
induced
imbalance
mitochondrial
membrane
potential,
classical
morphological
alterations
ferroptosis,
generation
ROS,
occurrence
peroxidation
an
iron-dependent
manner
cells.
these
could
be
reversed
some
extent
ion
chelator
deferiprone
or
ferroptosis
inhibitor
ferrostatin-1,
indicating
cells
treated
with
underwent
Mechanistically,
molecular
docking
further
established
probably
promoted
heme
degradation
labile
pool
(LIP)
upregulating
HO-1
expression,
which
led
Fenton
reaction,
GSH
depletion,
ccRCC,
whereas
blocking
signaling
pathway
evidently
rescued
Lut-induced
inhibiting
Altogether,
current
study
shows
compound
monomer
exerted
efficacy
expression
activating
LIP
trigger
promising
drug
candidate
for
treatment.