The poly (ADP-ribose) polymerase 1 (PARP1) enzyme is one of the promising molecular targets for the discovery of antitumor drugs. PARP1 is a common nuclear protein (1-2 million molecules per cell) serving as a “sensor” for DNA strand breaks. Increased PARP1 expression is sometimes observed in melanomas, breast cancer, lung cancer, and other neoplastic diseases. The PARP1 expression level is a prognostic indicator and is associated with a poor survival prognosis. There is evidence that high PARP1 expression and treatment-resistance of tumors are correlated. PARP1 inhibitors are promising antitumor agents, since they act as chemo- and radiosensitizers in the conventional …
Frontiers in Oncology,
Journal Year:
2021,
Volume and Issue:
11
Published: Feb. 25, 2021
Resveratrol
(RSV)
is
known
to
possess
anticancer
properties
in
many
types
of
cancers
like
breast
cancer,
which
POLD1
may
serve
as
a
potential
target.
However,
the
mechanism
RSV
on
triple
negative
cancer
(TNBC)
remains
unclear.
In
present
study,
antitumor
effects
and
TNBC
cells
were
analyzed
by
RNA
sequencing
(RNA-seq),
was
then
verified
via
cell
counting
kit-8
(CCK8),
immunofluorescence,
immunohistochemistry,
Western
Blot
(WB),
flow
cytometry,
hematoxylin-eosin
(HE)
staining.
According
corresponding
findings,
survival
rate
MDA-MB-231
gradually
decreased
treatment
concentration
increased.
The
RNA-seq
analysis
results
demonstrated
that
genes
affected
mainly
involved
apoptosis
p53
signaling
pathway.
Moreover,
induced
observed
be
mediated
POLD1.
When
treated
with
RSV,
expression
levels
full
length
PARP1,
PCNA,
BCL-2
found
significantly
reduced,
level
Cleaved-PARP1
well
Cleaved-Caspase3
increased
significantly.
Additionally,
mRNA
reduced
after
protein
also
inhibited
concentration-dependent
manner.
prediction
domain
interaction
suggested
bind
at
least
five
functional
domains
(6s1m,
6s1n,
6s1o,
6tny
6tnz).
Furthermore,
treatment,
anti-apoptotic
index
(PCNA,
BCL-2)
decrease
while
(caspase3)
overexpression
extent
following
treatment.
animal
experimental
showed
had
significant
inhibitory
effect
growth
live
tumors,
shown
antagonize
this
effect.
Accordingly,
study’s
findings
reveal
promote
reducing
activate
apoptotic
pathway,
therapy
for
TNBC.
Frontiers in Network Physiology,
Journal Year:
2021,
Volume and Issue:
1
Published: Oct. 12, 2021
The
circadian
clock
in
mammals
regulates
the
sleep/wake
cycle
and
many
associated
behavioral
physiological
processes.
cellular
mechanism
involves
a
transcriptional
negative
feedback
loop
that
gives
rise
to
rhythms
gene
expression
with
an
approximately
24-h
periodicity.
To
maintain
system
robustness,
clocks
throughout
body
must
be
synchronized
their
functions
coordinated.
In
mammals,
master
is
located
suprachiasmatic
nucleus
(SCN)
of
hypothalamus.
SCN
entrained
light/dark
through
photic
signal
transduction
subsequent
induction
core
expression.
turn
relays
time-of-day
information
peripheral
tissues.
While
highly
responsive
cues,
are
more
sensitive
non-photic
resetting
cues
such
as
nutrients,
temperature,
neuroendocrine
hormones.
For
example,
feeding/fasting
physical
activity
can
entrain
signaling
pathways
regulation
genes
proteins.
As
such,
timing
food
intake
matters.
ideal
world,
cycles
cycle.
However,
asynchronous
environmental
those
experienced
by
shift
workers
frequent
travelers,
often
lead
misalignment
between
clocks.
Emerging
evidence
suggests
resulting
disruption
various
diseases
chronic
conditions
cause
further
desynchrony
accelerate
disease
progression.
this
review,
we
discuss
how
sleep,
nutrition,
synchronize
chronomedicine
may
offer
novel
strategies
for
intervention.
Biomolecules,
Journal Year:
2024,
Volume and Issue:
14(10), P. 1269 - 1269
Published: Oct. 9, 2024
Poly(ADP-ribose)
polymerases
(PARPs)
are
crucial
nuclear
proteins
that
play
important
roles
in
various
cellular
processes,
including
DNA
repair,
gene
transcription,
and
cell
death.
Among
the
17
identified
PARP
family
members,
PARP1
is
most
abundant
enzyme,
with
approximately
1-2
million
molecules
per
cell,
acting
primarily
as
a
damage
sensor.
It
has
become
promising
biological
target
for
anticancer
drug
studies.
Enhanced
expression
present
several
types
of
tumors,
such
melanomas,
lung
cancers,
breast
correlating
low
survival
outcomes
resistance
to
treatment.
inhibitors,
especially
newly
developed
third-generation
inhibitors
currently
undergoing
Phase
II
clinical
trials,
have
shown
efficacy
agents
both
single
drugs
sensitizers
chemo-
radiotherapy.
This
review
explores
properties,
characteristics,
challenges
discussing
their
development
from
first-generation
compounds,
more
sustainable
synthesis
methods
discovery
new
anti-cancer
agents,
mechanisms
therapeutic
action,
potential
targeting
additional
targets
beyond
catalytic
active
site
proteins.
Perspectives
on
green
chemistry
also
discussed.
Oncotarget,
Journal Year:
2017,
Volume and Issue:
8(28), P. 46348 - 46362
Published: May 19, 2017
Overexpression
of
PARP1
exists
in
various
cancers,
including
glioblastoma
(GBM).
Although
inhibition
is
a
promising
therapeutic
target,
no
comprehensive
study
has
addressed
PARP1's
expression
characteristics
and
prognostic
role
regarding
molecular
heterogeneity
astrocytomas
GBM.
Our
aim
was
to
evaluate
associations
with
survival,
WHO
grade,
lineage
specific
markers,
GBM
transcriptomic
subtypes.
We
collected
genomic
clinical
data
from
the
latest
glioma
datasets
The
Cancer
Genome
Atlas
performed
PARP1,
ATRX,
IDH1,
p53
immunohistochemistry
on
tissue
samples.
demonstrated
that
gain
increased
mRNA
are
high-grade
astrocytomas,
particularly
Proneural
Classical
Additionally,
higher
levels
exhibited
an
inverse
correlation
patient
survival
(p<0.005)
subgroup.
ATRX
(p=0.006),
TP53
(p=0.015)
mutations
were
associated
protein
level
correlated
loss
overexpression.
Furthermore,
together
wildtype
indicated
shorter
(p=0.039).
Therefore,
due
subtype
specificity,
mutation
status
reliable
marker
candidates
distinguish
subtypes,
implications
International Journal of Molecular Sciences,
Journal Year:
2021,
Volume and Issue:
22(21), P. 11441 - 11441
Published: Oct. 23, 2021
Poly
(ADP-ribose)
polymerase-1
(PARP-1)
is
a
nuclear
enzyme
involved
in
processes
of
cell
cycle
regulation,
DNA
repair,
transcription,
and
replication.
Hyperactivity
PARP-1
induced
by
changes
homeostasis
promotes
development
chronic
pathological
leading
to
death
during
various
metabolic
disorders,
cardiovascular
neurodegenerative
diseases.
In
contrast,
tumor
growth
accompanied
moderate
activation
that
supports
survival
cells
due
enhancement
lesion
repair
resistance
therapy
damaging
agents.
That
why
PARP
inhibitors
(PARPi)
are
promising
agents
for
the
A
PARPi
family
rapidly
growing
partly
natural
polyphenols
discovered
among
plant
secondary
metabolites.
This
review
describes
mechanisms
participation
pathologies,
analyzes
multiple
PARP-dependent
pathways
degeneration
death,
discusses
representative
polyphenols,
which
can
inhibit
directly
or
suppress
unwanted
cellular
processes.
Results in Chemistry,
Journal Year:
2023,
Volume and Issue:
6, P. 101013 - 101013
Published: June 23, 2023
Out
of
several
heterocyclic
templates,
the
use
a
Benzimidazole
(BZ)
scaffold
is
immensely
observed.
This
fused
heterocycle
comprises
two
ring
nitrogen
atoms
placed
at
1st
and
3rd
position,
in
which
connected
to
hydrogen
that
gets
released
exhibit
acidic
property.
The
BZ
for
purpose
making
clinically
useful
compounds
was
started
year
1944.
derivatives
have
been
consistently
used
as
effective
chemotherapeutic
agents
treat
diverse
range
disorders.
Apart
from
their
clinical
usefulness,
BZ-based
also
confer
high
safety,
bio-availability,
stability.
conditions,
cancer,
helminthiasis
are
few
where
this
template
has
maximally
utilized.
present
review
emphasizes
chronologically
developments
entire
scope
medicinal
chemistry
antibacterial,
anticancer,
antifungal,
anti-inflammatory,
anti-HIV
(human
immunodeficiency
virus),
anticonvulsant,
antioxidant,
antidiabetic,
antitubercular,
antileishmanial,
antimalarial,
anti-histaminic.
covers
patents
on
importance
till
2020.
primary
objective
develop
comprehensive
SAR
(structure–activity
relationship),
turn
assists
chemist
come
up
with
novel
ideas,
while
being
implemented
could
produce
enormous
potential.
BMC Cancer,
Journal Year:
2019,
Volume and Issue:
19(1)
Published: Aug. 22, 2019
Carbon
ion
(12C)
radiotherapy
is
becoming
very
promising
to
kill
highly
metastatic
cancer
cells
keeping
adjacent
normal
least
affected.
Our
previous
study
shows
that
combined
PARP-1
inhibition
with
12C
reduces
MMP-2,-9
synergistically
in
HeLa
but
detailed
mechanism
are
not
clear.
To
understand
this
and
the
rationale
of
using
inhibitor
for
better
outcome
controlling
metastasis,
we
investigated
potential
two
non-small
cell
lung
(NSCLC)
A549
H1299
(p53-deficient)
exposed
presence
absence
siRNA
or
olaparib.We
monitored
proliferation,
in-vitro
migration,
wound
healing,
expression
activity
MMP-2,
-
9
p53-deficient
lines
without
olaparib/DPQ.
Expression
phosphorylation
NF-kB,
EGFR,
Akt,
p38,
ERK
was
also
observed
olaparib.
We
checked
few
marker
genes
involved
epithelial-mesenchymal
transition
(EMT)
pathways
like
N-cadherin,
vimentin,
anillin,
claudin-1,
2
both
NSCLC.
determine
generalized
effect
olaparib
cell's
potential,
healing
studied
MCF7
after
exposure
combination
olaparib.Our
experiments
show
separately
resulting
inactivation
NF-kB.
Combined
treatment
abolishes
NF-kB
hence
expressions.
Each
single
anillin
increases
leading
suppression
EMT
process.
However,
alters
these
proteins
suppress
significantly.The
activation
transcription
via
key
targeted
by
olaparib/siRNA.
Hence,
could
potentially
be
as
chemotherapeutic
agent
control
metastasis.