Nanomaterials,
Год журнала:
2024,
Номер
15(1), С. 41 - 41
Опубликована: Дек. 29, 2024
Prussian
blue
nanoparticles
(PBNPs)
have
been
identified
as
a
promising
candidate
for
biomimetic
peroxidase
(POD)-like
activity,
specifically
due
to
the
metal
centres
(Fe3+/Fe2+)
of
(PB),
which
potential
function
catalytically
active
centres.
The
decoration
PBNPs
with
desired
functional
polymers
(such
amino-
or
carboxylate-based)
primarily
facilitates
subsequent
linkage
biomolecules
their
use
in
biosensor
applications.
Thus,
elucidation
catalytic
POD
mimicry
these
systems
is
significant
scientific
interest
but
has
not
investigated
depth
yet.
In
this
report,
we
studied
series
poly(ethyleneimine)
(PEI)-mediated
(PB/PEI
NPs)
prepared
using
various
synthesis
protocols.
resulting
range
particles
varying
size
(~19–92
nm)
and
shape
combinations
were
characterised
order
gain
insights
into
physicochemical
properties.
POD-like
nanozyme
activity
was
then
by
utilising
3,3′,5,5′-tetramethylbenzidine
(TMB)/H2O2
system,
performance
natural
enzyme
horseradish
(HRP)
serving
point
comparison.
It
shown
that
most
PB/PEI
NPs
displayed
higher
than
PBNPs,
observed
smaller
size,
Fe
content,
Fe2+/Fe3+
ratio.
Furthermore,
demonstrated
enhanced
chemical
stability
presence
acid,
sodium
azide,
high
concentrations
H2O2
when
compared
HRP,
confirming
viability
nanozymatic
material.
This
study
disseminates
fundamental
knowledge
on
activities,
will
facilitate
selection
an
appropriate
particle
type
future
Chemical Reviews,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 27, 2025
Nanozymes
have
shown
significant
potential
in
cancer
catalytic
therapy
by
strategically
catalyzing
tumor-associated
substances
and
metabolites
into
toxic
reactive
oxygen
species
(ROS)
situ,
thereby
inducing
oxidative
stress
promoting
cell
death.
However,
within
the
complex
tumor
microenvironment
(TME),
rational
design
of
nanozymes
factors
like
activity,
reaction
substrates,
TME
itself
significantly
influence
efficiency
ROS
generation.
To
address
these
limitations,
recent
research
has
focused
on
exploring
that
affect
activity
developing
nanozyme-based
cascade
systems,
which
can
trigger
two
or
more
processes
tumors,
producing
therapeutic
achieving
efficient
stable
with
minimal
side
effects.
This
area
remarkable
progress.
Perspective
provides
a
comprehensive
overview
nanozymes,
covering
their
classification
fundamentals.
The
regulation
nanozyme
strategies
are
discussed
detail.
Furthermore,
representative
paradigms
for
successful
construction
systems
treatment
summarized
focus
revealing
underlying
mechanisms.
Finally,
we
current
challenges
future
prospects
development
biomedical
applications.
ACS Energy Letters,
Год журнала:
2025,
Номер
unknown, С. 750 - 778
Опубликована: Янв. 13, 2025
Fast-charging
technology,
which
reduces
charging
time
and
enhances
convenience,
is
attracting
attention.
Sodium-ion
batteries
(SIBs)
potassium-ion
(PIBs)
are
emerging
as
viable
alternatives
to
lithium-ion
(LIBs)
due
their
abundant
resources
low
cost.
However,
during
fast
discharging,
the
crystal
structures
of
cathode
materials
in
SIBs/PIBs
can
be
damaged,
negatively
impacting
performance,
lifespan,
capacity.
To
address
this,
there
a
need
explore
electrode
with
ultrahigh
rate
capabilities.
Prussian
Blue
its
analogues
(PB
PBAs)
have
shown
great
potential
for
both
SIBs
PIBs
unique
excellent
electrochemical
properties.
This
Review
examines
use
PBAs
PIBs,
focusing
on
fast-charging
(rate)
performance
commercialization
potential.
Through
systematic
analysis
discussion,
we
hope
provide
practical
guidance
developing
contributing
advancement
widespread
adoption
green
energy
technologies.
In
contrast
to
homogeneous
enzyme
catalysis,
nanozymes
are
nanosized
heterogeneous
catalysts
that
perform
reactions
on
a
rigid
surface.
This
fundamental
difference
between
enzymes
and
is
often
overlooked
in
kinetic
studies
practical
applications.
this
article,
using
14
of
various
compositions
(core@shell,
metal-organic
frameworks,
metal,
metal
oxide
nanoparticles),
we
systematically
demonstrate
nontypical
features
nanozymes,
such
as
multiple
catalytic
activities,
chemical
transformations,
aggregation,
need
be
considered
nanozyme
catalysis.
Ignoring
these
results
the
inaccurate
quantification
activity.
Neglecting
activities
led
six-time
underestimation
Mn
Advanced Science,
Год журнала:
2025,
Номер
unknown
Опубликована: Фев. 22, 2025
Abstract
The
core
strategies
in
treating
rheumatoid
arthritis
(RA)
now
focus
on
ameliorating
the
inflammatory
microenvironment
and
reversing
macrophage
phenotypes
within
joint
cavity.
This
study
introduces
a
co‐delivery
system
of
integrating
nanoenzymes
gene
therapeutics
sequentially
modified
with
guanidinium‐based
polymers
membranes
to
achieve
synergistic
therapeutic
effects.
is
named
MACP
siTNF‐α
nanoparticles
(NPs).
are
designed
for
targeted
delivery
inflamed
site,
where
they
preferentially
internalized
by
M1‐type
macrophages
efficiently
evade
lysosomal
degradation.
Subsequently,
operates
via
self‐sustaining
positive
feedback
drug
release
mechanism.
biomimetic
nanoplatform
reduces
reactive
oxygen
species
(ROS)
levels
prevents
glutathione
(GSH)
depletion.
GSH
degrades
small
interfering
RNA
(siRNA)
expose
Prussian
blue
(PB)
nanoenzymes,
which
effectively
scavenge
ROS
restore
levels.
loop
significantly
enhances
silencing
capability
scavenging
efficiency
system.
In
summary,
NPs
can
reverse
ecological
niche
soils
through
dual
mechanism
inhibiting
expression
tumor
necrosis
factor‐alpha
(TNF‐α)
upstream
pathway
response,
eliminating
ROS,
thus
realizing
efficient
treatment
RA.
Journal of Nanobiotechnology,
Год журнала:
2025,
Номер
23(1)
Опубликована: Март 3, 2025
Abstract
Immunotherapy
holds
notable
progress
in
the
treatment
of
cancer.
However,
clinical
therapeutic
effect
remains
a
significant
challenge
due
to
immune-related
side
effects,
poor
immunogenicity,
and
immunosuppressive
microenvironment.
Nanoparticles
have
emerged
as
revolutionary
tool
surmount
these
obstacles
amplify
potency
immunotherapeutic
agents.
Prussian
blue
nanoparticles
(PBNPs)
exhibit
multi-dimensional
immune
function
cancer
immunotherapy,
including
acting
nanocarrier
deliver
agents,
photothermal
agent
improve
efficacy
immunotherapy
through
therapy,
nanozyme
regulate
tumor
microenvironment,
an
iron
donor
induce
events
related
ferroptosis
tumor-associated
macrophages
polarization.
This
review
focuses
on
advances
applications
PBNPs
immunotherapy.
First,
biomedical
functions
are
introduced.
Then,
based
PBNPs,
we
systematically
reviewed
multidimensional
application
Finally,
challenges
future
developments
PBNPs-based
highlighted.
Graphical
abstract
ACS Applied Materials & Interfaces,
Год журнала:
2025,
Номер
unknown
Опубликована: Март 15, 2025
Diabetic
wound
healing
presents
a
significant
medical
challenge
and
requires
multistep
interventions
due
to
comprehensive
environments,
such
as
hyperglycemia,
bacterial
infection,
impaired
angiogenesis.
However,
current
are
complicated
need
on-demand
sequential
release
synergy
of
multicomponents.
Herein,
H2S-releasing
cascade
nanozyme
(FeS@Au),
which
is
composed
ultrasmall
gold
nanocluster
(AuNC)
loaded
on
ferrous
sulfide
nanoparticle
(FeSNP),
developed
single
component
regulate
glucose
level,
eliminate
promote
angiogenesis,
achieving
for
diabetic
treatment.
The
oxidase-like
activity
AuNC
catalyzes
into
gluconic
acid
H2O2,
not
only
lowers
the
local
level
but
also
decreases
pH
increases
H2O2
boost
peroxidase-like
FeSNP
generate
abundant
hydroxyl
radical
(reactive
oxygen
species,
ROS),
inducing
ferroptosis-like
death
in
drug-resistant
bacteria.
Additionally,
H2S
acidified
environment
upregulate
hypoxia-inducible
factor-1
enhance
vascularization
through
upregulating
expression
vascular
endothelial
growth
factor
(VEGF)
other
angiogenesis-related
genes,
reducing
damage
cells
caused
by
excessive
ROS
produced
nanozyme.
In
full-thickness
MRSA-infected
rat
model,
FeS@Au
significantly
eliminates
bacteria,
enhances
promotes
collagen
deposition,
accelerates
healing.
This
work
with
H2S-release
interventions,
providing
versatile
strategy
extensive
tissue
diabetes.
Abstract
Depression,
a
severe
disorder
affecting
both
physical
and
mental
health,
is
commonly
treated
with
first‐line
antidepressants,
which
often
exhibit
limited
efficacy
due
to
poor
penetration
of
the
blood‐brain
barrier
(BBB)
significant
side
effects,
thus
requiring
exploitation
biocompatible
effective
treatments.
Recent
studies
suggest
that
depression
closely
linked
an
imbalance
in
oxidative
stress
subsequent
inflammatory
responses.
Antioxidant
therapies
targeting
are
therefore
emerging
as
promising
strategies.
In
this
study,
exosome‐functionalized
geniposide
(GEN)
self‐carried
Prussian
blue
(PB)
nanotherapeutic
approach
fabricated
realize
efficient
BBB
for
synergistic
therapy.
The
porous
PB
carrier
possesses
multi‐enzyme
capabilities,
can
effectively
scavenge
accumulated
ROS,
protecting
slightly
acidic
environment
released
GEN
from
oxidation,
subsequently
works
simultaneously
activate
Nrf2‐ARE
pathway,
enhancing
body's
defense
mechanisms
synergistically.
triple‐amplified
anti‐oxidant
strategy
nanomaterial
shown
mitigate
microglial
activation
reduction
neuroplasticity,
ultimately
alleviating
pathological
markers
depression.
Overall,
constructed
nanomaterials
underscore
therapeutic
potential
anti‐oxidative
removal
ROS
pathway
treatment