Biosensors,
Journal Year:
2024,
Volume and Issue:
14(8), P. 367 - 367
Published: July 28, 2024
The
detection
of
biomarkers
(such
as
DNA,
RNA,
and
protein)
plays
a
vital
role
in
medical
diagnosis.
CRISPR-based
biosensors
utilize
the
CRISPR/Cas
system
for
biometric
recognition
targets
use
biosensor
strategy
to
read
out
biological
signals
without
employment
professional
operations.
Consequently,
demonstrate
great
potential
with
high
sensitivity
specificity.
However,
signal
readout
still
relies
on
specialized
detectors,
limiting
its
application
on-site
In
this
review,
we
summarize
principles
advances
focus
Then,
review
advantages
progress
naked
eye
biosensors,
which
can
realize
diagnosis
additional
detectors
readout.
Finally,
discuss
challenges
further
prospects
development
biosensors.
ACS Sensors,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 3, 2025
Functional
nucleic
acids
constitute
a
distinct
category
of
that
diverge
from
conventional
acid
amplification
methodologies.
They
are
capable
forming
intricate
hybrid
structures
through
Hoogsteen
and
reverse
hydrogen
bonding
interactions
between
double-stranded
single-stranded
DNA,
thereby
broadening
the
spectrum
DNA
interactions.
In
recent
years,
functional
DNA/RNA-based
surface-enhanced
Raman
spectroscopy
(SERS)
has
emerged
as
potent
platform
ultrasensitive
multiplexed
detection
variety
analytes
interest.
This
review
aims
to
elucidate
operational
principles
several
in
SERS
detection,
including
DNAzymes,
G-quadruplexes,
aptamers,
CRISPR,
origami
etc.,
alongside
design
methodologies
practical
applications
sensing.
Initially,
an
overview
is
summarized
encompassing
structural
attributes
sensing
mechanisms
inherent
diverse
DNA/RNA.
Following
this,
various
innovative
strategies
for
constructing
acid-based
sensors
illustrated
detail,
aimed
at
improving
present
capabilities.
A
comprehensive
summing
up
then
conducted
on
these
crucial
fields,
such
disease
diagnosis,
environmental
monitoring,
food
safety
with
particular
focus
sensitivity,
specificity,
analytical
versatility.
Finally,
conclusive
remarks
offered
along
exploration
existing
challenges
prospective
avenues
future
research
this
developed
field.
Abstract
Persistent
infection
with
high-risk
human
papillomavirus
(HR-HPV)
is
the
primary
and
initiating
factor
for
cervical
cancer.
With
over
200
identified
HPV
types,
including
14
types
that
integrate
into
host
epithelial
cell
DNA,
early
determination
of
type
crucial
effective
risk
stratification
management.
Presently,
on-site
immediate
testing
during
screening
stage,
known
as
Point
Care
Testing
(POCT),
remains
immature,
severely
limiting
scope
scenarios
screening.
This
study,
guided
by
genomic
sequence
patterns
HPV,
established
a
multiplex
recombinase
polymerase
amplification
(RPA)
technology
based
on
concept
“universal
primers.”
approach
achieved
multiple
RPA,
coupled
CRISPR/Cas12a
system
serving
medium
signal
conversion.
The
study
successfully
constructed
POCT
combined
detection
system,
denoted
H-MRC12a
(HPV—Multiple
RPA—CRISPR/Cas12a),
applied
it
to
typing
detection.
accomplished
six
(16,
18,
31,
33,
35,
45)
can
be
completed
within
40
min,
entire
process,
from
sample
loading
result
interpretation,
45
depth
reaching
1
copy/μL
each
type.
Validation
system’s
reproducibility
specificity
was
further
conducted
through
QPCR
34
clinical
samples.
Additionally,
this
explored
optimized
RPA
CRISPR
at
molecular
mechanism
level.
Furthermore,
primer
design
strategy
developed
in
offers
potential
enhance
throughput
while
ensuring
sensitivity,
providing
novel
research
avenue
high-throughput
Point-of-Care
pathogen
studies.
Nanoscale,
Journal Year:
2024,
Volume and Issue:
16(23), P. 11318 - 11326
Published: Jan. 1, 2024
The
escalating
global
threat
of
infectious
diseases,
including
monkeypox
virus
(MPXV),
necessitates
advancements
in
point-of-care
diagnostics,
moving
beyond
the
constraints
conventional
methods
tethered
to
centralized
laboratories.
Here,
we
introduce
multiple
CRISPR
RNA
(crRNA)-based
biosensors
that
can
directly
detect
MPXV
within
35
minutes
without
pre-amplification,
leveraging
enhanced
sensitivity
and
antifouling
attributes
BSA-based
nanocomposite.
Multiple
crRNAs,
strategically
targeting
diverse
regions
F3L
gene
MPXV,
are
designed
combined
amplify
Cas12a
activation
its
collateral
cleavage
reporter
probes.
Notably,
our
electrochemical
sensors
exhibit
detection
limit
669
fM
amplification,
which
is
approximately
a
15-fold
improvement
compared
fluorescence
detection.
This
sensor
also
shows
negligible
changes
peak
current
after
exposure
complex
biological
fluids,
such
as
whole
blood
serum,
maintaining
at
682
fM.
nearly
identical
conditions
when
only
was
present
PBS.
In
summary,
CRISPR-based
be
utilized
high-performance
diagnostic
tool
resource-limited
settings,
representing
transformative
leap
forward
testing.
Beyond
implications
this
technology
extend
various
molecular
establishing
itself
rapid,
accurate,
versatile
platform
for
target
analytes.
Applied Sciences,
Journal Year:
2025,
Volume and Issue:
15(5), P. 2606 - 2606
Published: Feb. 28, 2025
Hepatitis,
most
importantly
hepatitis
B
and
C,
is
a
significant
global
health
concern,
requiring
an
accurate
early
diagnosis
to
prevent
severe
liver
damage
ensure
effective
treatment.
The
currently
employed
diagnostic
methods,
while
effective,
are
often
limited
in
their
sensitivity,
specificity,
rapidity,
the
quest
for
improved
tools
ongoing.
This
review
explores
innovative
application
of
Raman
spectroscopy
combined
with
chemometric
analysis
as
powerful
tool
hepatitis.
offers
non-invasive,
rapid,
detailed
molecular
fingerprint
biological
samples,
techniques
enhance
interpretation
complex
spectral
data,
enabling
precise
differentiation
between
healthy
diseased
states
moreover
severity/stage
disease.
aims
provide
comprehensive
overview
current
research,
foster
greater
understanding,
stimulate
further
innovations
this
burgeoning
field.
spectrum
blood
plasma
or
serum
provides
fingerprints
biochemical
changes
profile
occurrence
disease
simultaneously,
analyses
polymerase
chain
reaction/hybridization
reaction
(PCR/HCR)-amplified
nucleic
acids
extracted
DNA/RNA
test
samples
more
states.
Chemometric
efficiency
allow
quantification
viral
loads,
indicating
stage
incorporation
different
methodologies
like
surface
enhancement
centrifugal
filtration
using
membranes
ability
target
directly
linked
Immunoassays
biosensors
based
on
offer
quantitative
detection
antigens
immune
response
body
(antibodies).
Microfluidic
devices
speed
through
continuous
testing
flowing
samples.
studies
massive
sample
sizes
up
1000
multiple
reports
achieving
than
90%
accuracy,
specificity
advanced
multivariate
data
indicate
that
promising
detection.
Its
reproducibility
identification
unique
reference
features
each
hepatic
still
challenges
translation
clinical
tool,
however.
development
databases
automated
comparison
processors
into
could
pave
way
near
future.
Analytical Chemistry,
Journal Year:
2023,
Volume and Issue:
95(37), P. 14127 - 14134
Published: Sept. 7, 2023
In
this
work,
combined
with
the
high
amplification
efficiency
of
hybridization
chain
reaction
(HCR),
specificity
CRISPR/Cas12a
system,
and
convenience
homogeneous
electrochemiluminescence
(ECL)
assay
based
on
regulation
negative
charge
reporting
probes,
a
sensitive
ECL
biosensor
for
hepatitis
B
virus
DNA
(chosen
as
model
target)
had
been
developed.
The
initiator
trigger
that
can
induce
HCR
is
modified
surface
ruthenium
bipyridine-doped
silica
nanoparticles
(Ru@SiO2
NPs)
first,
large
amounts
charges
particles
were
achieved
through
reaction.
reaching
negatively
charged
working
electrode
be
regulated
realize
change
signal.
addition,
long
luminescent
body
may
prevent
coreactant
from
entering
pore
to
react
bipyridine.
These
factors
combine
produce
low-background
system.
presence
target
activate
system
make
disappear
nanoparticle
surface,
strong
detected.
sensor
does
not
require
complex
modification;
therefore,
it
has
better
reproducibility.
Additionally,
due
dual
signal
amplification,
sensitivity.
range
10
fM
nM,
intensity
exhibits
linear
relationship
logarithm
concentration,
detection
limit
7.41
fM.
This
shown
accuracy
in
detecting
clinical
samples,
which
holds
significant
potential
application
testing.