Cancers,
Journal Year:
2020,
Volume and Issue:
12(4), P. 822 - 822
Published: March 29, 2020
For
the
past
two
decades,
cellular
senescence
has
been
recognized
as
a
central
component
of
tumor
cell
response
to
chemotherapy
and
radiation.
Traditionally,
this
form
senescence,
termed
Therapy-Induced
Senescence
(TIS),
was
linked
extensive
nuclear
damage
precipitated
by
classical
genotoxic
chemotherapy.
However,
number
other
forms
therapy
have
also
shown
induce
in
cells
independently
direct
genomic
damage.
This
review
attempts
provide
comprehensive
summary
both
conventional
targeted
anticancer
therapeutics
that
vitro
vivo.
Still,
utility
promoting
therapeutic
endpoint
remains
under
debate.
Since
represents
durable
growth
arrest,
it
might
be
argued
is
desirable
outcome
cancer
therapy.
accumulating
evidence
suggesting
capacity
escape
from
TIS
would
support
an
alternative
conclusion,
provides
avenue
whereby
can
evade
potentially
lethal
action
drugs,
allowing
enter
temporary
state
dormancy
eventually
facilitates
disease
recurrence,
often
more
aggressive
state.
Furthermore,
now
strongly
connected
remodeling,
dormancy,
acquiring
ominous
malignant
phenotypes
accounts
for
several
untoward
adverse
effects
Here,
we
argue
barrier
effective
treatment,
discuss
emerging
efforts
identify
exploit
agents
with
senolytic
properties
strategy
elimination
persistent
residual
surviving
population,
goal
mitigating
tumor-promoting
influence
senescent
thereby
reduce
likelihood
relapse.
EBioMedicine,
Journal Year:
2019,
Volume and Issue:
47, P. 446 - 456
Published: Sept. 1, 2019
Senescent
cells,
which
can
release
factors
that
cause
inflammation
and
dysfunction,
the
senescence-associated
secretory
phenotype
(SASP),
accumulate
with
ageing
at
etiological
sites
in
multiple
chronic
diseases.
Senolytics,
including
combination
of
Dasatinib
Quercetin
(D
+
Q),
selectively
eliminate
senescent
cells
by
transiently
disabling
pro-survival
networks
defend
them
against
their
own
apoptotic
environment.
In
first
clinical
trial
senolytics,
D
Q
improved
physical
function
patients
idiopathic
pulmonary
fibrosis
(IPF),
a
fatal
disease,
but
to
date,
no
peer-reviewed
study
has
directly
demonstrated
senolytics
decrease
humans.In
an
open
label
Phase
1
pilot
study,
we
administered
3
days
oral
100
mg
1000
subjects
diabetic
kidney
disease
(N
=
9;
68·7
±
3·1
years
old;
2
female;
BMI:33·9
2·3
kg/m2;
eGFR:27·0
2·1
mL/min/1·73m2).
Adipose
tissue,
skin
biopsies,
blood
were
collected
before
11
after
completing
senolytic
treatment.
cell
macrophage/Langerhans
markers
circulating
SASP
assayed.D
reduced
adipose
tissue
burden
within
days,
decreases
p16INK4A-and
p21CIP1-expressing
β-galactosidase
activity,
adipocyte
progenitors
limited
replicative
potential.
macrophages,
are
attracted,
anchored,
activated
crown-like
structures
decreased.
Skin
epidermal
p16INK4A+
p21CIP1+
reduced,
as
factors,
IL-1α,
IL-6,
MMPs-9
-12."Hit-and-run"
treatment
case
have
elimination
half-lives
<11
h,
significantly
humans.
FUND:
NIH
Foundations.
ClinicalTrials.gov
Identifier:
NCT02848131.
Senescence,
Frailty,
Mesenchymal
Stem
Cell
Functionality
Chronic
Kidney
Disease:
Effect
Senolytic
Agents.
Journal of Internal Medicine,
Journal Year:
2020,
Volume and Issue:
288(5), P. 518 - 536
Published: July 20, 2020
Senolytics
are
a
class
of
drugs
that
selectively
clear
senescent
cells
(SC).
The
first
senolytic
Dasatinib,
Quercetin,
Fisetin
and
Navitoclax
were
discovered
using
hypothesis-driven
approach.
SC
accumulate
with
ageing
at
causal
sites
multiple
chronic
disorders,
including
diseases
accounting
for
the
bulk
morbidity,
mortality
health
expenditures.
most
deleterious
resistant
to
apoptosis
have
up-regulation
anti-apoptotic
pathways
which
defend
against
their
own
inflammatory
senescence-associated
secretory
phenotype
(SASP),
allowing
them
survive,
despite
killing
neighbouring
cells.
transiently
disable
these
SCAPs,
causing
those
tissue-destructive
SASP.
Because
take
weeks
reaccumulate,
senolytics
can
be
administered
intermittently
-
'hit-and-run'
In
preclinical
models,
delay,
prevent
or
alleviate
frailty,
cancers
cardiovascular,
neuropsychiatric,
liver,
kidney,
musculoskeletal,
lung,
eye,
haematological,
metabolic
skin
disorders
as
well
complications
organ
transplantation,
radiation
cancer
treatment.
As
anticipated
agents
targeting
fundamental
mechanisms
'root
cause'
contributors
potential
uses
protean,
potentially
alleviating
over
40
conditions
in
studies,
opening
new
route
treating
age-related
dysfunction
diseases.
Early
pilot
trials
suggest
they
decrease
cells,
reduce
inflammation
frailty
humans.
Clinical
diabetes,
idiopathic
pulmonary
fibrosis,
Alzheimer's
disease,
COVID-19,
osteoarthritis,
osteoporosis,
eye
bone
marrow
transplant
childhood
survivors
underway
beginning.
Until
such
studies
done,
it
is
too
early
used
outside
clinical
trials.