The Analyst,
Journal Year:
2024,
Volume and Issue:
149(17), P. 4343 - 4350
Published: Jan. 1, 2024
Food
is
a
necessary
source
of
energy,
but
it
also
serves
as
pathway
for
transmitting
infectious
pathogens,
making
food
safety
matter
great
concern.
Rapid,
accurate,
and
specific
detection
methods
foodborne
viruses
are
crucial.
Surface-Enhanced
Raman
Scattering
(SERS),
due
to
its
superior
sensitivity
characteristic
fingerprint
spectra,
holds
enormous
potential.
However,
the
limitations
SERS,
requires
conditions
achieve
specificity.
In
order
enhance
specificity
accuracy
nucleic
acid
based
on
we
have
developed
CRISPR-Cas12a-mediated
SERS
technique
identify
target
DNA,
harnessing
targeting
recognition
capability
CRISPR-Cas12a
ultra-sensitive
tags
successfully
addressing
SERS'
lack
capability.
This
system
includes
gold/nickel
foam
substrate
(Au-NFs)
reporter
(ssDNA-ROX).
The
phenomenon
colloidal
gold/silver
nano-aggregation
magnesium
ions,
which
commonly
encountered
in
CRISPR-SERS,
was
simultaneously
solved
using
AuNFs.
qualitative
quantitative
analysis
DNA
drinking
water
performed
by
monitoring
intensity
change
ROX
molecules.
results
showed
that
sensor
detected
within
30
min
limit
(LOD)
8.23
fM.
expected
become
one
alternative
rapid
high
Heliyon,
Journal Year:
2024,
Volume and Issue:
10(4), P. e26179 - e26179
Published: Feb. 1, 2024
CRISPR/Cas
systems
have
become
integral
parts
of
nucleic
acid
detection
apparatus
and
biosensors.
Various
such
as
CRISPR/Cas9,
CRISPR/Cas12,
CRISPR/Cas13,
CRISPR/Cas14
CRISPR/Cas3
utilize
different
mechanisms
to
detect
or
differentiate
biological
activities
nucleotide
sequences.
Usually,
CRISPR/Cas-based
are
combined
with
polymerase
chain
reaction,
loop-mediated
isothermal
amplification,
recombinase
amplification
transcriptional
technologies
for
effective
diagnostics.
Premised
on
these,
many
biosensors
been
developed
acids
viral
bacterial
pathogens
in
clinical
samples,
well
other
applications
life
sciences
including
biosecurity,
food
safety
environmental
assessment.
Additionally,
showed
better
specificity
compared
molecular
diagnostic
methods.
In
this
review,
we
give
an
overview
various
methods
highlight
some
advances
their
development
components.
We
also
discourse
operational
challenges
advantages
disadvantages
systems.
Finally,
important
considerations
offered
the
improvement
testing.
ACS Sensors,
Journal Year:
2023,
Volume and Issue:
8(12), P. 4420 - 4441
Published: Nov. 18, 2023
CRISPR/Cas
system
is
becoming
an
increasingly
influential
technology
that
has
been
repositioned
in
nucleic
acid
detection.
A
preamplification
step
usually
required
to
improve
the
sensitivity
of
CRISPR/Cas-based
The
striking
biological
features
CRISPR/Cas,
including
programmability,
high
and
sequence
specificity,
single-base
resolution.
More
strikingly,
target-activated
trans-cleavage
could
act
as
a
biocatalytic
signal
transductor
amplifier,
thereby
empowering
it
potentially
perform
detection
without
step.
reports
such
work
are
on
rise,
which
not
only
scientifically
significant
but
also
promising
for
futuristic
end-user
applications.
This
review
started
with
introduction
methods
acids
diagnostics
(CRISPR-Dx).
Next,
we
objectively
discussed
pros
cons
steps
CRISPR-Dx.
We
then
illustrated
highlighted
recently
developed
strategies
CRISPR/Cas-powered
amplification-free
can
be
realized
through
uses
ultralocalized
reactors,
cascade
reactions,
ultrasensitive
systems,
or
others.
Lastly,
challenges
perspectives
were
proposed.
It
expected
this
makes
researchers
better
understand
current
emerging
field,
provides
insight
designing
novel
CRISPR-Dx
win
practicable
use
near
future.
ACS Applied Materials & Interfaces,
Journal Year:
2024,
Volume and Issue:
16(5), P. 5637 - 5647
Published: Jan. 26, 2024
Rapid
and
accurate
diagnosis
is
crucial
for
managing
the
global
health
threat
posed
by
multidrug-resistant
bacterial
infections;
however,
current
methods
have
limitations
in
either
being
time-consuming,
labor-intensive,
or
requiring
instruments
with
high
costs.
Addressing
these
challenges,
we
introduce
a
wireless
electrochemical
sensor
integrating
CRISPR/Cas
system
electroconductive
polymer
dot
(PD)
nanoparticles
to
rapidly
detect
pathogens
from
human
sputum.
To
enhance
properties,
synthesized
copper-ion-immobilized
PD
(PD-Cu),
followed
conjugation
of
deactivated
Cas9
protein
(dCas9)
onto
PD-Cu-coated
Si
electrodes
generate
dCas9-PD-Cu
sensor.
The
integrated
isothermal
amplification
can
specifically
target
nucleic
acids
bacteria,
such
as
antibiotic
resistance
genes
kpc-2
mecA.
exhibits
sensitivity,
allowing
detection
∼54
femtograms
acids,
based
on
measuring
changes
resistivity
through
capture
dCas9.
Furthermore,
sensing
platform
was
established
using
Bluetooth
module
microcontroller
unit
smartphone.
We
demonstrate
feasibility
diagnosing
pneumonia
patients'
sputum
samples,
achieving
92%
accuracy.
study
presents
versatile
biosensor
that
overcome
conventional
diagnostics
clinic.
ACS Sensors,
Journal Year:
2024,
Volume and Issue:
9(11), P. 5665 - 5682
Published: Nov. 11, 2024
Rapid
and
accurate
detection
is
a
prerequisite
for
precise
clinical
diagnostics,
ensuring
food
safety,
facilitating
biotechnological
applications.
The
Argonaute
system,
as
cutting-edge
technique,
has
been
successfully
repurposed
in
biosensing
beyond
the
CRISPR/Cas
system
(clustered
regularly
interspaced
short
palindromic
repeats
CRISPR-associated
proteins),
which
extensively
researched,
but
recognition
of
PAM
sequences
remains
restricted.
Argonaute,
programmable
target-activated
nuclease,
fabricating
novel
methods
due
to
its
unparalleled
biological
features.
In
this
comprehensive
review,
we
initially
elaborate
on
current
nucleic
acid
testing
nucleases,
followed
by
delving
into
structure
nuclease
activity
system.
advantages
compared
with
are
highlighted
discussed.
Furthermore,
summarize
applications
Argonaute-based
provide
an
in-depth
analysis
future
perspectives
challenges.
Recent
research
demonstrated
that
innovative
rapidly
advancing
technology
can
overcome
limitations
existing
potentially
replace
them.
summary,
implementation
integration
other
technologies
hold
promise
developing
customized
intelligent
across
various
aspects.