Inhibition of GRK2-PDE4D Axis Suppresses Fibroblast-Like Synoviocytes Hyperplasia and Alleviates Experimental Arthritis
Dafei Han,
Hanfei Sun,
Renhao Zhang
и другие.
International Journal of Biological Sciences,
Год журнала:
2025,
Номер
21(4), С. 1513 - 1529
Опубликована: Янв. 27, 2025
PDE4D
has
been
reported
to
exhibit
significantly
elevated
levels
in
the
synovium
of
RA
patients
compared
with
OA,
yet
its
role
remains
underexplored.
This
study
aimed
elucidate
GRK2-PDE4D
axis
FLSs
and
explore
potential
as
a
therapeutic
target
for
RA.
Abundant
expression
both
GRK2
was
observed
synovial
tissues
from
experimental
arthritis
animals
patients,
synchronized
noted
patients.
Global
deletion
Pde4d
reduced
disease
incidence
alleviated
CIA
mice.
TNF-α
upregulated
expression,
causing
abnormal
activation
hyperproliferation.
Inhibiting
restored
cAMP
levels,
thereby
reducing
hyperproliferation,
migration,
anti-apoptosis.
Mechanistically,
TNF-α-induced
upregulation
dependent
on
GRK2.
Inhibition
CP-25,
an
esterification
modification
paeoniflorin,
proliferation,
while
restoring
levels.
Both
genetic
deficiency
pharmacological
inhibition
decreased
ameliorating
severity
animal
models.
is
first
investigate
clarify
that
it
can
be
regulated
by
These
findings
suggest
targeting
represents
promising
strategy
Язык: Английский
Structure-Based Optimization of Moracin M as Potent and Selective PDE4 Inhibitors with Antipsoriasis Effects
Journal of Medicinal Chemistry,
Год журнала:
2025,
Номер
unknown
Опубликована: Март 11, 2025
Psoriasis
is
a
complex
chronic
inflammatory
disease
that
severely
affects
the
quality
of
life
patients.
However,
current
medications
could
only
control
symptoms
but
not
cure
psoriasis
with
unmet
medical
needs.
Herein,
structure-based
optimizations
natural
product
moracin
M
(IC50
2.9
μM)
led
to
novel
PDE4
inhibitor
L30
greatly
improved
potency
8.6
nM)
and
remarkable
selectivity
across
other
PDEs
families
(>201-fold).
The
binding
pattern
revealed
by
cocrystal
structure
was
different
from
roflumilast.
Besides,
effectively
inhibit
release
cytokines
chemokines
in
Raw264.7
HaCaT
cell
lines.
Furthermore,
topical
administration
exhibited
significant
therapeutic
effects
an
imiquimod-induced
mouse
model.
These
findings
highlighted
potential
as
lead
for
treatment
psoriasis.
Язык: Английский