Advanced Materials,
Journal Year:
2023,
Volume and Issue:
36(8)
Published: Sept. 19, 2023
Nanozymes,
next-generation
enzyme-mimicking
nanomaterials,
have
entered
an
era
of
rational
design;
among
them,
Co-based
nanozymes
emerged
as
captivating
players
over
times.
been
developed
and
garnered
significant
attention
the
past
five
years.
Their
extraordinary
properties,
including
regulatable
enzymatic
activity,
stability,
multifunctionality
stemming
from
magnetic
photothermal
conversion
effects,
cavitation
relaxation
efficiency,
made
a
rising
star.
This
review
presents
first
comprehensive
profiling
in
chemistry,
biology,
environmental
sciences.
The
begins
by
scrutinizing
various
synthetic
methods
employed
for
nanozyme
fabrication,
such
template
sol-gel
methods,
highlighting
their
distinctive
merits
chemical
standpoint.
Furthermore,
detailed
exploration
wide-ranging
applications
biosensing
biomedical
therapeutics,
well
contributions
to
monitoring
remediation
is
provided.
Notably,
drawing
inspiration
state-of-the-art
techniques
omics,
analysis
undertaken,
employing
analogous
statistical
methodologies
provide
valuable
guidance.
To
conclude,
outlook
on
challenges
prospects
presented,
spanning
microscopic
physicochemical
mechanisms
macroscopic
clinical
translational
applications.
Advanced Materials,
Journal Year:
2023,
Volume and Issue:
36(10)
Published: Feb. 11, 2023
Nanozymes,
a
class
of
nanomaterials
mimicking
the
function
enzymes,
have
aroused
much
attention
as
candidate
in
diverse
fields
with
arbitrarily
tunable
features
owing
to
diversity
crystalline
nanostructures,
composition,
and
surface
configurations.
However,
uncertainty
their
active
sites
lower
intrinsic
deficiencies
nanomaterial-initiated
catalysis
compared
natural
enzymes
promote
pursuing
alternatives
by
imitating
biological
centers.
Single-atom
nanozymes
(SAzymes)
maximize
atom
utilization
well-defined
structure,
providing
an
important
bridge
investigate
mechanism
relationship
between
structure
catalytic
activity.
They
risen
new
burgeoning
alternative
enzyme
from
vitro
bioanalytical
tool
vivo
therapy
flexible
atomic
engineering
structure.
Here,
focus
is
mainly
on
three
parts.
First,
detailed
overview
single-atom
catalyst
synthesis
strategies
including
bottom-up
top-down
approaches
given.
Then,
according
structural
feature
nanocatalysts,
influence
factors
such
central
metal
atom,
coordination
number,
heteroatom
doping,
metal-support
interaction
are
discussed
representative
applications
(including
antibacterial/antiviral
performance,
cancer
therapy,
biosensing)
highlighted.
In
end,
future
perspective
challenge
facing
demonstrated.
Angewandte Chemie International Edition,
Journal Year:
2022,
Volume and Issue:
62(11)
Published: Dec. 31, 2022
Abstract
The
deficient
catalytic
activity
of
nanozymes
and
insufficient
endogenous
H
2
O
in
the
tumor
microenvironment
(TME)
are
major
obstacles
for
nanozyme‐mediated
therapy.
Since
electron
transfer
is
basic
essence
catalysis‐mediated
redox
reactions,
we
explored
contributing
factors
enzymatic
based
on
positive
negative
charges,
which
experimentally
theoretically
demonstrated
to
enhance
peroxidase
(POD)‐like
a
MoS
nanozyme.
Hence,
an
acidic
microenvironment‐responsive
ultrasound‐mediated
cascade
nanocatalyst
(BTO/MoS
@CA)
presented
that
made
from
few‐layer
nanosheets
grown
surface
piezoelectric
tetragonal
barium
titanate
(T‐BTO)
modified
with
pH‐responsive
cinnamaldehyde
(CA).
integration
CA‐mediated
self‐supply,
charge‐enhanced
activity,
glutathione
(GSH)
depletion
enables
out‐of‐balance
homeostasis,
leading
effective
ferroptosis
minimal
side
effects.
Nano Letters,
Journal Year:
2023,
Volume and Issue:
23(13), P. 6073 - 6080
Published: June 26, 2023
Pursuing
effective
and
generalized
strategies
for
modulating
the
electronic
structures
of
atomically
dispersed
nanozymes
with
remarkable
catalytic
performance
is
exceptionally
attractive
yet
challenging.
Herein,
we
developed
a
facile
"formamide
condensation
carbonization"
strategy
to
fabricate
library
single-atom
(M1-NC;
6
types)
dual-atom
(M1/M2-NC;
13
metal-nitrogen-carbon
(M
=
Fe,
Co,
Ni,
Mn,
Ru,
Cu)
reveal
peroxidase-
(POD-)
like
activities.
The
Fe1Co1-NC
nanozyme
Fe1-N4/Co1-N4
coordination
displayed
highest
POD-like
activity.
Density
functional
theory
(DFT)
calculations
revealed
that
Co
atom
site
synergistically
affects
d-band
center
position
Fe
served
as
second
reaction
center,
which
contributes
better
Finally,
Fe1Co1
NC
was
shown
be
in
inhibiting
tumor
growth
both
vitro
vivo,
suggesting
diatomic
synergy
an
developing
artificial
novel
nanocatalytic
therapeutics.
Advanced Materials,
Journal Year:
2023,
Volume and Issue:
35(46)
Published: July 27, 2023
Recently,
single-atom
nanozymes
have
made
significant
progress
in
the
fields
of
sterilization
and
treatment,
but
their
catalytic
performance
as
substitutes
for
natural
enzymes
drugs
is
far
from
satisfactory.
Here,
a
method
reported
to
improve
enzyme
activity
by
adjusting
spatial
position
site
on
nanoplatforms.
Two
types
Cu
are
synthesized
interlayer
(CuL
/PHI)
in-plane
(CuP
poly
(heptazine
imide)
(PHI)
through
different
synthesis
pathways.
Experimental
theoretical
analysis
indicates
that
PHI
can
effectively
adjust
coordination
number,
bond
length,
electronic
structure
single
atoms
compared
position,
thereby
promoting
photoinduced
electron
migration
O2
activation,
enabling
effective
generate
reactive
oxygen
species
(ROS).
Under
visible
light
irradiation,
photocatalytic
bactericidal
CuL
/PHI
against
aureus
≈100%,
achieving
same
antibacterial
effect
antibiotics,
after
10
min
low-dose
exposure
2
h
incubation.
Advanced Science,
Journal Year:
2023,
Volume and Issue:
10(19)
Published: May 17, 2023
Overexpression
of
classically
activated
macrophages
(M1)
subtypes
and
assessed
reactive
oxygen
species
(ROS)
levels
are
often
observed
in
patients
with
ulcerative
colitis.
At
present,
the
treatment
system
these
two
problems
has
yet
to
be
established.
Here,
chemotherapy
drug
curcumin
(CCM)
is
decorated
Prussian
blue
analogs
a
straightforward
cost-saving
manner.
Modified
CCM
can
released
inflammatory
tissue
(acidic
environment),
eventually
causing
M1
transform
into
M2
inhibiting
pro-inflammatory
factors.
Co(III)
Fe(II)
have
abundant
valence
variations,
lower
REDOX
potential
CCM-CoFe
PBA
enables
ROS
clearance
through
multi-nanomase
activity.
In
addition,
effectively
alleviated
symptoms
UC
mice
induced
by
DSS
inhibited
progression
disease.
Therefore,
present
material
may
used
as
new
therapeutic
agent
for
UC.
Small,
Journal Year:
2023,
Volume and Issue:
19(11)
Published: Jan. 17, 2023
Abstract
On
accounts
of
the
advantages
inherent
high
stability,
ease
preparation
and
superior
catalytic
activities,
nanozymes
have
attracted
tremendous
potential
in
diverse
biomedical
applications
as
alternatives
to
natural
enzymes.
Optimizing
activity
is
significant
for
widening
boosting
into
practical
level.
As
research
regulation
strategies
boosting,
it
essential
timely
review,
summarize,
analyze
advances
structure–activity
relationships
further
inspiring
ingenious
this
prosperous
area.
Herein,
methods
recent
5
years
are
systematically
summarized,
including
size
morphology,
doping,
vacancy,
surface
modification,
hybridization,
followed
by
a
discussion
latest
consisting
biosensing,
antibacterial,
tumor
therapy.
Finally,
challenges
opportunities
rapidly
developing
field
presented
more
infant
yet
promising
Small,
Journal Year:
2023,
Volume and Issue:
19(35)
Published: April 28, 2023
As
an
emerging
cancer
treatment
strategy,
ferroptosis
is
greatly
restricted
by
excessive
glutathione
(GSH)
in
tumor
microenvironment
(TME)
and
low
reactive
oxygen
species
(ROS)
generation
efficiency.
Here,
this
work
designs
self-assembled
copper-alanine
nanoparticles
(CACG)
loaded
with
glucose
oxidase
(GOx)
cinnamaldehyde
(Cin)
for
situ
activated
enzymatic
cascade-enhanced
immunotherapy.
In
response
to
GSH-rich
acidic
TME,
CACG
allows
effectively
co-deliver
Cu2+
,
Cin,
GOx
into
tumors.
Released
Cin
consumes
GSH
through
Michael
addition,
accompanying
the
reduction
of
Cu+
further
depletion.
With
cascade
-catalyzed
Fenton
reactions
enzyme-catalyzed
GOx,
could
get
rid
restriction
insufficient
hydrogen
peroxide
leading
a
robust
constant
ROS.
high
efficiency
depletion
ROS
production,
significantly
enhanced
vivo.
Moreover,
elevated
oxidative
stress
triggers
immune
responses
promoting
dendritic
cells
maturation
T
cell
infiltration.
The
vivo
results
prove
that
efficiently
inhibit
growth
4T1
tumor-bearing
mouse
model
without
causing
obvious
systemic
toxicity,
suggesting
great
potential
enhancing
immunotherapy
effective
treatment.