Beyond the Hayflick limit: How microbes influence cellular aging
Ageing Research Reviews,
Journal Year:
2025,
Volume and Issue:
104, P. 102657 - 102657
Published: Jan. 7, 2025
Language: Английский
Caco2/HT-29 In Vitro Cell Co-Culture: Barrier Integrity, Permeability, and Tight Junctions’ Composition During Progressive Passages of Parental Cells
Biology,
Journal Year:
2025,
Volume and Issue:
14(3), P. 267 - 267
Published: March 6, 2025
Epithelial
linings
are
crucial
for
the
maintenance
of
physiological
barriers.
The
intestinal
epithelial
barrier
(IEB)
consists
enterocytes
through
tight
junctions
and
mucus-secreting
cells
can
undergo
modifications
throughout
life.
To
reproduce
as
closely
possible
IEB
main
features
over
time,
in
vitro
co-cultures
Caco2/HT-29
70/30
formed
by
parental
Caco2
HT-29
sub-cultivated
more
than
40
passages
were
set
up.
measurements
transepithelial
electrical
resistance
(TEER)
identified
two
populations:
TEER
(PC)
with
values
>
50
Ωcm2
fewer
passages,
leaky
(LC)
<
passages.
In
LC,
paracellular
permeability
increased
parallel.
By
immunofluorescence
Western
blot
analysis,
an
increase
claudin
2
was
observed
LC
vs.
PC,
no
differences
occludin
expression.
MUC-2
immunoreactivity
stronger
PC
LC.
also
showed
enhanced
vulnerability
to
TNFα+IFN-γ.
These
results
morpho-functional
reported
human
leaky/aged
gut
support
usefulness
our
cell
model
studying
molecular
processes
underlying
these
testing
drug/nutraceutical
treatments
ameliorate
aging.
Language: Английский
The connection between aging, cellular senescence and gut microbiome alterations: A comprehensive review
Aging Cell,
Journal Year:
2024,
Volume and Issue:
23(10)
Published: Aug. 15, 2024
Abstract
The
intricate
interplay
between
cellular
senescence
and
alterations
in
the
gut
microbiome
emerges
as
a
pivotal
axis
aging
process,
increasingly
recognized
for
its
contribution
to
systemic
inflammation,
physiological
decline,
predisposition
age‐associated
diseases.
Cellular
senescence,
characterized
by
cessation
of
cell
division
response
various
stressors,
induces
morphological
functional
changes
within
tissues.
complexity
heterogeneity
senescent
cells,
alongside
secretion
senescence‐associated
secretory
phenotype,
exacerbate
process
through
pro‐inflammatory
pathways
influence
microenvironment
immune
system.
Concurrently,
aging‐associated
diversity
composition
contribute
dysbiosis,
further
exacerbating
inflammation
undermining
integrity
bodily
functions.
This
review
encapsulates
burgeoning
research
on
reciprocal
relationship
highlighting
their
collective
impact
age‐related
musculoskeletal
diseases,
including
osteoporosis,
sarcopenia,
osteoarthritis.
It
also
explores
potential
modulating
targeting
innovative
strategies
healthy
mitigating
progression
aging‐related
conditions.
By
exploring
targeted
interventions,
development
senotherapeutic
drugs
probiotic
therapies,
this
aims
shed
light
novel
therapeutic
avenues.
These
leverage
connection
advance
interventions
aimed
at
extending
health
span
improving
quality
life
older
population.
Language: Английский
Unraveling the link between metabolic dysfunction-associated steatotic liver disease and osteoporosis: a bridging function of gut microbiota
Jing Zhang,
No information about this author
Zhen Sun,
No information about this author
Lili Xu
No information about this author
et al.
Frontiers in Endocrinology,
Journal Year:
2025,
Volume and Issue:
16
Published: April 1, 2025
This
review
examines
the
strong
association
between
metabolic
dysfunction-associated
steatotic
liver
disease
(MASLD)
and
osteoporosis
(OP),
with
a
particular
focus
on
role
of
gut
microbiota
in
linking
these
two
disorders.
Both
MASLD
OP
are
closely
linked
to
syndrome,
their
pathogenesis
involves
multiple
factors,
such
as
inflammatory
response,
insulin
resistance,
altered
intestinal
permeability,
estrogen
deficiency.
Dysregulation
not
only
affects
hepatic
fat
accumulation
bone
metabolism
disorders
through
metabolites,
short-chain
fatty
acids,
but
also
exacerbates
systemic
chronic
inflammation
by
impairing
barrier
function,
thus
accelerating
progression
both
diseases.
article
summarizes
recent
studies
that
highlight
central
co-morbid
factor
OP,
offering
new
perspectives
for
future
diagnostic
therapeutic
strategies.
Language: Английский
Emerging insights in senescence: pathways from preclinical models to therapeutic innovations
npj Aging,
Journal Year:
2024,
Volume and Issue:
10(1)
Published: Nov. 22, 2024
Abstract
Senescence
is
a
crucial
hallmark
of
ageing
and
significant
contributor
to
the
pathology
age-related
disorders.
As
committee
members
young
International
Cell
Association
(yICSA),
we
aim
synthesise
recent
advancements
in
identification,
characterisation,
therapeutic
targeting
senescence
for
clinical
translation.
We
explore
novel
molecular
techniques
that
have
enhanced
our
understanding
senescent
cell
heterogeneity
their
roles
tissue
regeneration
pathology.
Additionally,
delve
into
vivo
models
senescence,
both
non-mammalian
mammalian,
highlight
tools
available
advancing
contextual
senescence.
Furthermore,
discuss
innovative
diagnostic
senotherapeutic
approaches,
emphasising
potential
application.
Future
directions
research
are
explored,
underscoring
need
precise,
context-specific
classification
integration
advanced
technologies
such
as
machine
learning,
long-read
sequencing,
multifunctional
senoprobes
senolytics.
The
dual
role
promoting
homoeostasis
contributing
chronic
diseases
highlights
complexity
these
cells
improved
outcomes.
Language: Английский
Senolytic Vaccines from the Central and Peripheral Tolerance Perspective
Vaccines,
Journal Year:
2024,
Volume and Issue:
12(12), P. 1389 - 1389
Published: Dec. 10, 2024
Preventive
medicine
has
proven
its
long-term
effectiveness
and
economic
feasibility.
Over
the
last
century,
vaccination
saved
more
lives
than
any
other
medical
technology.
At
present,
preventative
measures
against
most
infectious
diseases
are
successfully
used
worldwide;
in
addition,
platforms
oncological
even
autoimmune
being
actively
developed.
same
time,
development
of
led
to
an
increase
both
life
expectancy
proportion
age-associated
diseases,
which
pose
a
heavy
socio-economic
burden.
In
this
context,
vaccine-based
approaches
for
prevention
or
treatment
age-related
opens
up
broad
prospects
extending
period
active
longevity
high
potential.
It
is
well
known
that
associated
with
accumulation
senescent
cells
various
organs
tissues.
been
demonstrated
elimination
such
leads
restoration
functions,
rejuvenation,
extension
experimental
animals.
However,
vaccines
complicated
by
their
antigenic
heterogeneity
lack
unique
marker.
body’s
own
cells,
may
be
reason
low
immunogenicity.
This
mini-review
discusses
mechanisms
central
peripheral
tolerance
influence
formation
anti-senescent
immune
response
responsible
age.
Language: Английский