Proceedings of the National Academy of Sciences,
Journal Year:
2020,
Volume and Issue:
117(35), P. 21258 - 21266
Published: Aug. 17, 2020
Significance
The
extracellular
matrix
is
highly
dynamic
and
presents
mechanical
signals
to
the
residing
cells
maintain
tissue
homeostasis.
Recently,
nucleus
has
been
implicated
be
a
direct
mechanosensor,
dysregulation
of
nuclear
mechanosensing
might
involved
in
several
diseases,
including
bone
degeneration.
To
better
understand
mechanisms
behind
remodeling
epigenetic
landscape
through
mechanosensing,
we
utilize
an
innovative
photostiffening
hydrogel
platform
manipulate
human
mesenchymal
stem
cells.
Our
results
reveal
that
disruption
up-regulates
histone
deacetylases
prevents
response
as
well
osteogenic
fate
determination.
Interestingly,
see
similar
defective
from
patients
with
osteoarthritis,
indicating
this
cellular
mechanism
likely
relevant
bone-related
diseases.
International Journal of Molecular Sciences,
Journal Year:
2018,
Volume and Issue:
19(10), P. 3028 - 3028
Published: Oct. 4, 2018
The
immense
diversity
of
extracellular
matrix
(ECM)
proteins
confers
distinct
biochemical
and
biophysical
properties
that
influence
cell
phenotype.
ECM
is
highly
dynamic
as
it
constantly
deposited,
remodelled,
degraded
during
development
until
maturity
to
maintain
tissue
homeostasis.
ECM’s
composition
organization
are
spatiotemporally
regulated
control
behaviour
differentiation,
but
dysregulation
dynamics
leads
the
diseases
such
cancer.
chemical
cues
presented
by
have
been
appreciated
key
drivers
for
both
cancer
progression.
However,
mechanical
forces
present
due
largely
ignored
recently
recognized
play
critical
roles
in
disease
progression
malignant
behaviour.
Here,
we
review
ways
which
microenvironment
regulation
phenotype
stages
human
Advanced Materials,
Journal Year:
2020,
Volume and Issue:
32(9)
Published: Jan. 16, 2020
Abstract
Materials
patterned
with
high‐aspect‐ratio
nanostructures
have
features
on
similar
length
scales
to
cellular
components.
These
surfaces
are
an
extreme
topography
the
level
and
become
useful
tools
for
perturbing
sensing
environment.
Motivation
comes
from
ability
of
deliver
cargoes
into
cells
tissues,
access
intracellular
environment,
control
cell
behavior.
structures
directly
perturb
cells'
sense
respond
external
forces,
influencing
fate,
enabling
new
mechanistic
studies.
Through
careful
design
their
nanoscale
structure,
these
systems
act
as
biological
metamaterials,
eliciting
unusual
responses.
While
predominantly
used
interface
eukaryotic
cells,
there
is
growing
interest
in
nonanimal
prokaryotic
interfacing.
Both
experimental
theoretical
studies
attempted
develop
a
understanding
observed
behaviors,
focusing
cell–nanostructure
interface.
This
review
considers
how
nanostructured
both
stimulate
systems.
Annual Review of Biomedical Engineering,
Journal Year:
2019,
Volume and Issue:
21(1), P. 267 - 297
Published: June 4, 2019
In
addition
to
their
early-recognized
functions
in
host
defense
and
the
clearance
of
apoptotic
cell
debris,
macrophages
play
vital
roles
tissue
development,
homeostasis,
repair.
If
misregulated,
they
steer
progression
many
inflammatory
diseases.
Much
progress
has
been
made
understanding
mechanisms
underlying
macrophage
signaling,
transcriptomics,
proteomics,
under
physiological
pathological
conditions.
Yet,
detailed
that
tune
circulating
monocytes/macrophages
tissue-resident
polarization,
differentiation,
specification,
functional
plasticity
remain
elusive.
We
review
how
physical
factors
affect
phenotype
function,
including
hunt
for
particles
pathogens,
as
well
implications
phagocytosis,
autophagy,
polarization
from
proinflammatory
prohealing
phenotype.
further
discuss
this
knowledge
can
be
harnessed
regenerative
medicine
design
new
drugs
immune-modulatory
drug
delivery
systems,
biomaterials,
scaffolds.
Nano Letters,
Journal Year:
2019,
Volume and Issue:
20(1), P. 748 - 757
Published: Dec. 10, 2019
Material
surface
topographic
features
have
been
shown
to
be
crucial
for
tissue
regeneration
and
treatment
of
implanted
devices.
Many
biomaterials
were
investigated
with
respect
the
response
cells
on
roughness.
However,
some
conclusions
even
conflicted
each
other
due
unclear
interplay
substrate
elastic
as
well
lack
mechanistic
studies.
Herein,
wide-scale
roughness
gradient
hydrogels,
integrating
from
nanoscale
microscale
controllable
stiffness,
developed
via
soft
lithography
precise
morphology.
Based
this
promising
platform,
we
systematically
studied
mechanosensitive
human
mesenchymal
stem
(MSCs)
a
broad
range
roughnesses
(200
nm
1.2
μm
Rq)
different
stiffnesses.
We
observed
that
MSCs
responded
in
stiffness-dependent
manner
by
reorganizing
hierarchical
structure.
Surprisingly,
cellular
mechanoresponse
osteogenesis
obviously
enhanced
very
hydrogels
(3.8
kPa)
high
roughness,
which
was
comparable
or
better
than
smooth
stiff
substrates.
These
findings
extend
our
understanding
interactions
between
biomaterials,
highlighting
an
effective
noninvasive
approach
regulate
cell
fate
synergetic
physical
cues.
Frontiers in Bioengineering and Biotechnology,
Journal Year:
2019,
Volume and Issue:
7
Published: July 16, 2019
Cells
and
tissues
can
sense
react
to
the
modifications
of
physico-chemical
properties
extracellular
environment
(ECM)
through
integrin-based
adhesion
sites
adapt
their
physiological
response
in
a
process
called
mechanotransduction.
Due
critical
localization
at
cell-ECM
interface,
transmembrane
integrins
are
mediators
bidirectional
signaling,
playing
key
role
«
outside-in
»
inside-out
signal
transduction.
After
presenting
basic
conceptual
fundamentals
related
field
mechanobiology,
we
review
current
state-of-the-art
technologies
that
facilitate
understanding
mechanotransduction
signaling
pathways.
Finally,
highlight
innovative
technological
developments
help
advance
our
molecular
mechanisms
involved
nuclear
Nature Communications,
Journal Year:
2021,
Volume and Issue:
12(1)
Published: Jan. 4, 2021
Abstract
The
development
of
single-cell
methods
for
capturing
different
data
modalities
including
imaging
and
sequencing
has
revolutionized
our
ability
to
identify
heterogeneous
cell
states.
Different
provide
perspectives
on
a
population
cells,
their
integration
is
critical
studying
cellular
heterogeneity
its
function.
While
various
have
been
proposed
integrate
modalities,
coupling
an
open
challenge.
We
here
present
approach
integrating
vastly
by
learning
probabilistic
between
the
using
autoencoders
map
shared
latent
space.
validate
this
RNA-seq
chromatin
images
distinct
subpopulations
human
naive
CD4+
T-cells
that
are
poised
activation.
Collectively,
provides
framework
translate
cannot
yet
be
measured
within
same
diverse
applications
in
biomedical
discovery.