Enhanced PDMS Functionalization for Organ‐on‐a‐Chip Platforms Using Ozone and Sulfo‐SANPAH: A Simple Approach for Biomimetic Long‐Term Cell Cultures
Advanced Healthcare Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Апрель 2, 2025
Surface
modification
of
polydimethylsiloxane
(PDMS)
for
organ-on-a-chip
(OOC)
systems
is
fundamental
the
success
cell
physiological
assays.
Although
UV
light
commonly
used
this
purpose,
surface
chemical
modifications
are
only
temporary.
To
overcome
these
limitations,
an
alternative
approach
proposed:
a
physicochemical
using
ozone
and
heterofunctional
crosslinker
sulfo-SANPAH
(SS).
This
simple
one-step
carried
out
on
PDMS
microchannels
OOC
platforms.
A
broad
characterization
based
spectroscopy
microscopy
techniques
confirms
successful
surface.
The
contact
angle
decreases
after
addition
SS
(from
101.4°
to
79.9°)
but
as
low
20.8°
extracellular
matrix
deposition,
demonstrating
transition
from
hydrophobic
hydrophilic.
For
biological
characterization,
human
liver
sinusoidal
endothelial
cells
(LSEC)
murine
primary
hepatocytes
cultured
in
channels
up
7
days.
LSECs
establish
strong
adhesions
under
laminar
flow
form
well-established
canaliculi
network,
respectively.
method
simpler
than
others
reported
literature
(e.g.,
3-aminopropyltriethoxysilane)
ideal
beginners
interested
microfluidic
platforms
culture.
Язык: Английский
Blood flow‐induced angiocrine signals promote organ growth and regeneration
BioEssays,
Год журнала:
2024,
Номер
unknown
Опубликована: Ноя. 11, 2024
Recently,
we
identified
myeloid-derived
growth
factor
(MYDGF)
as
a
blood
flow-induced
angiocrine
signal
that
promotes
human
and
mouse
hepatocyte
proliferation
survival.
Here,
review
literature
reporting
changes
in
flow
after
partial
organ
resection
the
liver,
lung,
kidney,
describe
signals
released
by
endothelial
cells
(ECs)
upon
alterations
these
organs.
While
(HGF)
MYDGF
are
important
for
liver
regeneration,
now,
have
also
been
reported
to
stimulate
hyperplasia
and/or
hypertrophy
during
regeneration
of
lungs
kidneys.
In
addition,
play
critical
role
tumor
growth.
Understanding
mechano-elastic
properties
flow-mediated
organ-specific
microvasculature
is
crucial
therapeutic
approaches
maintain
health
initiate
renewal.
Язык: Английский