Frontiers in Immunology,
Journal Year:
2024,
Volume and Issue:
15
Published: June 25, 2024
Background
Macrophages
are
innate
immune
cells
that
display
remarkable
phenotypic
heterogeneity
and
functional
plasticity.
Due
to
their
involvement
in
the
pathogenesis
of
several
human
conditions,
macrophages
considered
be
an
attractive
therapeutic
target.
In
line
with
this,
platelet
derivatives
have
been
successfully
applied
many
medical
fields
as
active
participants
immunity,
cooperation
between
platelets
is
essential.
this
context,
aim
review
compile
current
evidence
regarding
effects
on
phenotype
functions
identify
advantages
shortcomings
for
feasible
future
clinical
applications.
Methods
A
total
669
articles
were
identified
during
systematic
literature
search
performed
PubMed
Web
Science
databases.
Results
27
met
inclusion
criteria.
Based
published
findings,
may
play
important
role
inducing
a
dynamic
M1/M2
balance
promoting
timely
M1-M2
shift.
However,
differences
procedures
polarization
occasional
lack
information,
makes
reproducibility
comparison
results
extremely
challenging.
Furthermore,
understanding
those
derived
from
animal
models,
taking
into
account
peculiarities
tissue
resident
ontogeny
seem
essential
design
new
strategies.
Conclusion
Research
combination
provides
relevant
information
function
mechanisms
response.
ACS Applied Materials & Interfaces,
Journal Year:
2023,
Volume and Issue:
15(24), P. 28891 - 28906
Published: June 12, 2023
Glucocorticoid-induced
osteonecrosis
of
the
femoral
head
(GC-ONFH)
is
a
serious
bone
disease
that
often
affects
young
individuals.
Bone
grafting
combined
with
core
decompression
mainly
used
in
clinic
to
treat
GC-ONFH.
However,
outcome
usually
not
satisfactory,
as
expected.
Here,
we
report
an
engineered
exosome-functionalized
extracellular
matrix-mimicking
hydrogel
for
promoting
repair
Compared
Con-Exo,
exosomes
secreted
by
marrow
stem
cells
(BMSCs)
conventional
culture
medium,
Li-Exo,
derived
from
stimulated
lithium
ions,
promoted
macrophage
M2
polarization
while
inhibiting
M1
polarization.
Furthermore,
inspired
fact
hydrogels
can
serve
desirable
carriers
facilitate
their
release
sustained
manner
improved
therapeutic
efficiency
and
vivo
application,
matrix
(ECM)-mimicking
(Lightgel)
composed
methacryloylated
type
I
collagen
was
employed
incorporate
Li-Exo/Con-Exo
construct
Lightgel-Li-Exo
hydrogel/Lightgel-Con-Exo
hydrogel.
In
vitro
studies
showed
had
most
significant
pro-osteogenic
pro-angiogenic
activity.
Finally,
evaluated
effects
rat
models
As
result,
effect
on
enhancing
polarization,
osteogenesis,
angiogenesis
promote
Taken
together,
this
novel
ECM-mimicking
could
be
promising
strategy
treatment.
International Journal of Molecular Sciences,
Journal Year:
2023,
Volume and Issue:
24(8), P. 7677 - 7677
Published: April 21, 2023
Spinal
diseases
are
commonly
associated
with
pain
and
neurological
symptoms,
which
negatively
impact
patients’
quality
of
life.
Platelet-rich
plasma
(PRP)
is
an
autologous
source
multiple
growth
factors
cytokines,
the
potential
to
promote
tissue
regeneration.
Recently,
PRP
has
been
widely
used
for
treatment
musculoskeletal
diseases,
including
spinal
in
clinics.
Given
increasing
popularity
therapy,
this
article
examines
current
literature
basic
research
emerging
clinical
applications
therapy
treating
diseases.
First,
we
review
vitro
vivo
studies,
evaluating
repairing
intervertebral
disc
degeneration,
promoting
bone
union
fusion
surgeries,
aiding
recovery
from
cord
injury.
Second,
address
degenerative
disease,
its
analgesic
effect
on
low
back
radicular
pain,
as
well
accelerating
during
surgery.
Basic
demonstrates
promising
regenerative
PRP,
studies
have
reported
safety
efficacy
several
Nevertheless,
further
high-quality
randomized
controlled
trials
would
be
required
establish
evidence
therapy.
ACS Nano,
Journal Year:
2024,
Volume and Issue:
18(4), P. 3053 - 3072
Published: Jan. 18, 2024
The
progressive
worsening
of
disc
degeneration
and
related
nonspecific
back
pain
are
prominent
clinical
issues
that
cause
a
tremendous
economic
burden.
Activation
reactive
oxygen
species
(ROS)
inflammation
is
primary
pathophysiologic
change
in
degenerative
lesions.
This
pathological
state
associated
with
M1
macrophages,
apoptosis
nucleus
pulposus
cells
(NPC),
the
ingrowth
pain-related
sensory
nerves.
To
address
discogenic
pain,
we
developed
MnO2@TMNP,
nanomaterial
encapsulated
MnO2
nanoparticles
TrkA-overexpressed
macrophage
cell
membrane
(TMNP).
Consequently,
this
engineered
showed
high
efficiency
binding
various
inflammatory
factors
nerve
growth
factors,
which
inhibited
inflammation-induced
NPC
apoptosis,
matrix
degradation,
ingrowth.
Furthermore,
provided
specific
targeting
to
macrophages
for
delivery
nanoparticles.
effectively
scavenged
intracellular
ROS
prevented
polarization.
Supportively,
found
MnO2@TMNP
promoted
regeneration,
leading
downregulated
grades
rat
injured
model.
Both
mechanical
thermal
hyperalgesia
were
alleviated
by
was
attributed
reduced
calcitonin
gene-related
peptide
(CGRP)
substance
P
expression
dorsal
root
ganglion
Glial
Fibrillary
Acidic
Protein
(GFAP)
Fos
Proto-Oncogene
(c-FOS)
signaling
spinal
cord.
We
confirmed
immune
microenvironment
intervertebral
discs
progression
degeneration,
resulting
relieved
pain.
Biomedicine & Pharmacotherapy,
Journal Year:
2024,
Volume and Issue:
172, P. 116238 - 116238
Published: Feb. 3, 2024
Intervertebral
disc
degeneration
(IDD)
is
a
disease
that
severely
affects
spinal
health
and
prevalent
worldwide.
Mesenchymal
stem
cells
(MSCs)
their
derived
extracellular
vesicles
(EVs)
have
regenerative
potential
emerged
as
promising
therapeutic
tools
for
treating
degenerative
discs.
However,
challenges
such
the
harsh
microenvironment
of
degenerated
intervertebral
discs
EVs'
limited
stability
efficacy
hindered
clinical
application.
In
recent
years,
hydrogels
attracted
much
attention
in
field
IDD
therapy
because
they
can
mimic
physiologic
provide
solution
by
providing
suitable
growth
environment
MSCs
EVs.
This
review
introduced
biological
properties
EVs,
summarized
research
on
application
EVs
IDD,
current
trial
studies
also
explored
mechanism
action
addition,
plenty
elaborated
different
classified
tissue
engineering,
synergistic
effect
promoting
regeneration,
wide
IDD.
Finally,
problems
still
faced
hydrogel-loaded
treatment
are
summarized,
solutions
proposed.
paper
outlines
effects
combination
with
aims
to
theoretical
references
future
related
studies.
Bioactive Materials,
Journal Year:
2024,
Volume and Issue:
42, P. 32 - 51
Published: Aug. 27, 2024
Due
to
overactive
inflammation
and
hindered
angiogenesis,
self-healing
of
diabetic
wounds
(DW)
remains
challenging
in
the
clinic.
Platelet-derived
exosomes
(PLT-Exos),
a
novel
exosome
capable
anti-inflammation
pro-angiogenesis,
show
great
potential
DW
treatment.
However,
previous
administration
into
skin
is
topical
daub
or
intradermal
injection,
which
cannot
intradermally
deliver
PLT-Exos
dermis
layer,
thus
impeding
its
long-term
efficacy
pro-angiogenesis.
Herein,
dissolvable
microneedle-based
wound
dressing
(PLT-Exos@ADMMA-MN)
was
developed
for
transdermal
delivery
PLT-Exos.
Firstly,
photo-crosslinking
methacrylated
acellular
dermal
matrix-based
hydrogel
(ADMMA-GEL),
showing
physiochemical
tailorability,
fast-gelling
performance,
excellent
biocompatibility,
pro-angiogenic
capacities,
synthesized
as
base
material
our
dressing.
For
endowing
with
were
encapsulated
ADMMA-GEL
minimum
effective
concentration
determined
by
in-vitro
experiments.
Then,
results
that
this
exhibits
properties
Lastly,
in-vivo
experiments
showed
could
continuously
transdermally
switch
local
macrophage
M2
phenotype
while
stimulating
neovascularization,
proving
low-inflammatory
microenvironment
healing.
Collectively,
study
provides
suppressing
vascularization
Frontiers in Immunology,
Journal Year:
2023,
Volume and Issue:
14
Published: Dec. 5, 2023
During
fibrosis,
(myo)fibroblasts
deposit
large
amounts
of
extracellular
matrix
proteins,
thereby
replacing
healthy
functional
tissue.
In
liver
this
leads
to
the
loss
hepatocyte
function,
portal
hypertension,
variceal
bleeding,
and
increased
susceptibility
infection.
At
an
early
stage,
fibrosis
is
a
dynamic
reversible
process,
however,
from
cirrhotic
there
significant
progression
hepatocellular
carcinoma.
Both
liver-resident
macrophages
(Kupffer
cells)
monocyte-derived
are
important
drivers
progression,
but
can
also
induce
its
regression
once
triggers
chronic
inflammation
eliminated.
cancer,
they
attracted
tumor
site
become
tumor-associated
(TAMs)
polarized
towards
M2-
anti-inflammatory/tumor-promoting
phenotype.
Besides
their
role
in
thrombosis
hemostasis,
platelets
stimulate
development
by
secreting
profibrogenic
factors
regulating
innate
immune
response,
e.g.,
interacting
with
monocytes
macrophages.
Here,
we
review
recent
literature
on
interplay
Frontiers in Medicine,
Journal Year:
2023,
Volume and Issue:
10
Published: March 10, 2023
Platelets,
anucleate
blood
components,
represent
the
major
cell
type
involved
in
regulation
of
hemostasis
and
thrombosis.
In
addition
to
performing
haemostatic
roles,
platelets
can
influence
both
innate
adaptive
immune
responses.
this
review,
we
summarize
development
their
functions
hemostasis.
We
also
discuss
interactions
between
platelet
products
or
cells,
including
neutrophils,
monocytes,
macrophages,
T
B
cells
dendritic
cells.
Activated
released
molecules
regulate
differentiation
function
these
via
platelet-derived
receptors
secreting
molecules.
Platelets
have
dual
effects
on
nearly
all
Understanding
exact
mechanisms
underlying
will
enable
further
application
transfusion.