Molecular Biology of the Cell,
Journal Year:
2023,
Volume and Issue:
34(6)
Published: Jan. 25, 2023
Cells
sense
and
migrate
across
mechanically
dissimilar
environments
throughout
development
disease
progression.
However,
it
remains
unclear
whether
mechanical
memory
of
past
empowers
cells
to
navigate
new,
three-dimensional
extracellular
matrices.
Here,
we
show
that
previously
primed
on
stiff,
compared
with
soft,
matrices
generate
a
higher
level
forces
remodel
collagen
fibers
promote
invasion.
This
priming
advantage
persists
in
dense
or
stiffened
collagen.
We
explain
this
memory-dependent,
cross-environment
cell
invasion
through
lattice-based
model
wherein
stiff-primed
cellular
minimize
energy
required
for
future
According
our
model,
transfer
their
the
matrix
via
alignment
tension,
remodeled
informs
Thus,
memory-laden
overcome
mechanosensing
softer
challenging
cell-matrix
memory.
Consistent
predictions,
depletion
yes-associated
protein
destabilizes
remodeling
before
release
tension
laser
ablation
disable
fiber
by
lysyl-oxidase
inhibition,
both
which
disrupt
cell-to-matrix
hamper
These
results
have
implications
cancer,
fibrosis,
aging,
where
potential
may
prolonged
response.
Nature,
Journal Year:
2022,
Volume and Issue:
611(7935), P. 365 - 373
Published: Nov. 2, 2022
Abstract
Cells
respond
to
physical
stimuli,
such
as
stiffness
1
,
fluid
shear
stress
2
and
hydraulic
pressure
3,4
.
Extracellular
viscosity
is
a
key
cue
that
varies
under
physiological
pathological
conditions,
cancer
5
However,
its
influence
on
biology
the
mechanism
by
which
cells
sense
changes
in
are
unknown.
Here
we
demonstrate
elevated
counterintuitively
increases
motility
of
various
cell
types
two-dimensional
surfaces
confinement,
dissemination
from
three-dimensional
tumour
spheroids.
Increased
mechanical
loading
imposed
induces
an
actin-related
protein
2/3
(ARP2/3)-complex-dependent
dense
actin
network,
enhances
Na
+
/H
exchanger
(NHE1)
polarization
through
actin-binding
partner
ezrin.
NHE1
promotes
swelling
increased
membrane
tension,
which,
turn,
activates
transient
receptor
potential
cation
vanilloid
4
(TRPV4)
mediates
calcium
influx,
leading
RHOA-dependent
contractility.
The
coordinated
action
remodelling/dynamics,
NHE1-mediated
RHOA-based
contractility
facilitates
enhanced
at
viscosities.
Breast
pre-exposed
acquire
TRPV4-dependent
memory
transcriptional
control
Hippo
pathway,
migration
zebrafish,
extravasation
chick
embryos
lung
colonization
mice.
Cumulatively,
extracellular
regulates
both
short-
long-term
cellular
processes
with
pathophysiological
relevance
biology.
Communications Biology,
Journal Year:
2023,
Volume and Issue:
6(1)
Published: Jan. 19, 2023
Abstract
Across
complex,
multi-time
and
-length
scale
biological
systems,
redundancy
confers
robustness
resilience,
enabling
adaptation
increasing
survival
under
dynamic
environmental
conditions;
this
review
addresses
ubiquitous
effects
of
cytoskeletal
remodelling,
triggered
by
biomechanical,
biophysical
biochemical
cues,
on
stem
cell
mechanoadaptation
emergent
lineage
commitment.
The
cytoskeleton
provides
an
adaptive
structural
scaffold
to
the
cell,
regulating
emergence
structure-function
relationships
during
tissue
neogenesis,
both
in
prenatal
development
as
well
postnatal
healing.
Identification
mapping
mechanical
cues
conducive
remodelling
may
help
establish
contexts
that
can
be
used
prospectively
translational
design
specifications
target
neogenesis
for
regenerative
medicine.
In
review,
we
summarize
findings
context
early
healing,
its
relevance
guiding
commitment
targeted
regeneration.
We
highlight
how
cytoskeleton-targeting
chemical
agents
modulate
differentiation
govern
responses
cells’
emerging
form
function.
further
methods
spatiotemporal
visualization
measurement
properties
cells,
a
function
adaptation.
Research
these
areas
facilitate
translation
own
healing
potential
improve
materials,
therapies,
devices
Advanced Materials,
Journal Year:
2023,
Volume and Issue:
35(52)
Published: April 23, 2023
Advances
in
bioprinting
have
enabled
the
fabrication
of
complex
tissue
constructs
with
high
speed
and
resolution.
However,
there
remains
significant
structural
biological
complexity
within
tissues
that
is
unable
to
recapitulate.
Bone,
for
example,
has
a
hierarchical
organization
ranging
from
molecular
whole
organ
level.
Current
techniques
materials
employed
imposed
limits
on
scale,
speed,
resolution
can
be
achieved,
rendering
technique
reproduce
hierarchies
cell-matrix
interactions
are
observed
bone.
The
shift
toward
biomimetic
approaches
bone
engineering,
where
hydrogels
provide
biophysical
biochemical
cues
encapsulated
cells,
promising
approach
enhancing
function
development
vitro
modeling.
A
major
focus
modeling
creating
dynamic
microenvironmental
niches
support,
stimulate,
direct
cellular
processes
formation
remodeling.
Hydrogels
ideal
imitating
extracellular
matrix
since
they
engineered
present
various
whilst
allowing
bioprinting.
Here,
recent
advances
3D
niche
conducive
engineering
models
reviewed.
Nature Materials,
Journal Year:
2022,
Volume and Issue:
22(1), P. 135 - 143
Published: Dec. 28, 2022
Tissue
morphogenesis,
homoeostasis
and
repair
require
cells
to
constantly
monitor
their
three-dimensional
microenvironment
adapt
behaviours
in
response
local
biochemical
mechanical
cues.
Yet
the
parameters
of
cellular
probed
by
vivo
remain
unclear.
Here,
we
report
mechanics
that
probe
situ
during
zebrafish
presomitic
mesoderm
differentiation.
By
quantifying
both
endogenous
cell-generated
strains
tissue
mechanics,
show
individual
stiffness
associated
with
deformations
supracellular,
foam-like
architecture.
Stress
relaxation
leads
a
perceived
decreases
over
time,
probing
softest
regime.
We
find
most
parameters,
including
those
cells,
vary
along
anteroposterior
axis
as
mesodermal
progenitors
differentiate.
These
findings
expand
our
understanding
mechanosensation
might
aid
design
advanced
scaffolds
for
engineering
applications.
Circulation,
Journal Year:
2022,
Volume and Issue:
146(24), P. 1855 - 1881
Published: Nov. 17, 2022
Pulmonary
hypertension
(PH)
is
associated
with
increased
expression
of
VEGF-A
(vascular
endothelial
growth
factor
A)
and
its
receptor,
VEGFR2
2),
but
whether
how
activation
signal
participates
in
the
pathogenesis
PH
unclear.VEGF-A/VEGFR2
Y949-dependent
vascular
leak
were
investigated
lung
samples
from
patients
mice
exposed
to
hypoxia.
To
study
their
mechanistic
roles
hypoxic
PH,
we
examined
right
ventricle
systolic
pressure,
ventricular
hypertrophy,
pulmonary
vasculopathy
mutant
carrying
knock-in
phenylalanine
that
replaced
tyrosine
at
residual
949
(Vefgr2Y949F)
conditional
deletion
Vegfr2
after
chronic
hypoxia
exposure.We
show
leads
excessive
both
mice,
this
because
an
overactivated
VEGF-A/VEGFR2
Y949
signaling
axis.
In
context
Yes1
c-Src
subsequent
VE-cadherin
phosphorylation
cells
are
involved
Y949-induced
permeability.
Abolishing
by
Vefgr2Y949F
point
mutation
was
sufficient
prevent
permeability
inhibit
macrophage
infiltration
Rac1
smooth
muscle
under
exposure,
thereby
leading
alleviated
manifestations,
including
muscularization
distal
arterioles,
elevated
hypertrophy.
It
important
found
myeloid
macrophages
trivial
dispensable
for
hypoxia-induced
abnormalities
PH.
contrast
selective
blockage
signaling,
disruption
entire
promotes
development
PH.Our
results
support
notion
determinant
might
serve
as
attractive
therapeutic
target
pathway
disease.