Lab on a Chip,
Journal Year:
2024,
Volume and Issue:
24(11), P. 2883 - 2892
Published: Jan. 1, 2024
We
investigate
for
the
first
time
compatibility
of
nanovials
with
microfluidic
impedance
cytometry,
paving
way
successful
combination
these
single-cell
technologies.
Lab on a Chip,
Journal Year:
2023,
Volume and Issue:
23(5), P. 1226 - 1257
Published: Jan. 1, 2023
Blood
tests
are
considered
as
standard
clinical
procedures
to
screen
for
markers
of
diseases
and
health
conditions.
However,
the
complex
cellular
background
(>99.9%
RBCs)
biomolecular
composition
often
pose
significant
technical
challenges
accurate
blood
analysis.
An
emerging
approach
point-of-care
diagnostics
is
utilizing
"label-free"
microfluidic
technologies
that
rely
on
intrinsic
cell
properties
fractionation
disease
detection
without
any
antibody
binding.
A
growing
body
evidence
has
also
reported
dysfunction
their
biophysical
phenotypes
complementary
hematoanalyzer
analysis
(complete
count)
can
provide
a
more
comprehensive
profiling.
In
this
review,
we
will
summarize
recent
advances
in
label-free
separation
different
components
including
circulating
tumor
cells,
leukocytes,
platelets
nanoscale
extracellular
vesicles.
Label-free
single
morphology,
spectrochemical
properties,
dielectric
parameters
characteristics
novel
blood-based
biomarkers
be
presented.
Next,
highlight
research
efforts
combine
microfluidics
with
machine
learning
approaches
enhance
sensitivity
specificity
studies,
well
innovative
solutions
which
capable
fully
integrated
sorting
Lastly,
envisage
current
future
outlook
platforms
high
throughput
multi-dimensional
identify
non-traditional
diagnostics.
Small,
Journal Year:
2024,
Volume and Issue:
20(26)
Published: March 14, 2024
Abstract
Single‐cell
mass
spectrometry
(MS)
is
significant
in
biochemical
analysis
and
holds
great
potential
biomedical
applications.
Efficient
sample
preparation
like
sorting
(i.e.,
separating
target
cells
from
the
mixed
population)
desalting
moving
off
non‐volatile
salt
solution)
urgently
required
single‐cell
MS.
However,
traditional
methods
suffer
complicated
operation
with
various
apparatus,
or
insufficient
performance.
Herein,
a
one‐step
strategy
by
leveraging
label‐free
impedance
flow
cytometry
(IFC)
based
microfluidics
proposed.
Specifically,
IFC
framework
to
characterize
sort
single‐cells
adopted.
Simultaneously
sorting,
cell
transferred
local
high‐salinity
buffer
MS‐compatible
solution.
In
this
way,
are
achieved
collected
can
be
directly
fed
for
MS
analysis.
A
high
efficiency
(>99%),
cancer
purity
(≈87%),
whole
workflow
of
impedance‐based
separation
normal
(MCF‐10A)
(MDA‐MB‐468)
verified.
As
standalone
module,
microfluidic
chip
compatible
variety
methods,
envisioned
provide
new
paradigm
efficient
preparation,
further
multi‐modal
electrical
metabolic)
characterization
single‐cells.
IEEE Transactions on Biomedical Engineering,
Journal Year:
2022,
Volume and Issue:
70(2), P. 565 - 572
Published: Aug. 8, 2022
Deformability
is
an
essential
feature
of
red
blood
cells
(RBCs),
enabling
them
to
undergo
significant
shape
change
in
response
external
forces.
Impaired
erythrocyte
deformability
associated
with
several
pathologic
conditions,
and
quantitative
measurement
RBC
critical
understanding
diagnosing
related
diseases.
Whereas
traditional
approaches
cell
mechanical
characterization
generally
have
limited
throughput,
emerging
microscale
technologies
are
opening
new
opportunities
for
high-throughput
cytometry
at
the
single-cell
level.In
this
work,
we
propose
innovative
microfluidic
system
based
on
(i)
a
hyperbolic
microchannel
induce
deformation
by
extensional
flow,
(ii)
electrical
sensing
zone
coplanar
electrodes
evaluate
deformed
shape.RBC
under
flow
achieved,
quantified
means
anisotropy
index,
throughput
300
cell/s.
Measurements
healthy
chemically
stiffened
RBCs
demonstrate
that
index
can
be
used
characterize
deformability,
as
alternative
indices
high-speed
image
processing.A
contactless
optics-free
approach
analysis
has
been
presented.Due
its
simplicity
potential
integration,
proposed
holds
promises
fast
low-cost
assays,
especially
point-of-care
resource-limited
settings.
Lab on a Chip,
Journal Year:
2023,
Volume and Issue:
23(5), P. 1011 - 1033
Published: Jan. 1, 2023
We
discuss
the
recent
trends
in
integrating
deep-learning
(DL)
and
optofluidic
imaging.
A
holistic
understanding
of
them
could
incentivize
DL-powered
imaging
for
advancing
a
wide
range
novel
applications
science
biomedicine.
Analytical Chemistry,
Journal Year:
2024,
Volume and Issue:
96(11), P. 4419 - 4429
Published: March 6, 2024
Impedance
flow
cytometry
(IFC)
has
been
demonstrated
to
be
an
efficient
tool
for
label-free
bacterial
investigation
obtain
the
electrical
properties
in
real
time.
However,
accurate
differentiation
of
different
species
bacteria
by
IFC
technology
remains
a
challenge
owing
insignificant
differences
data.
Here,
we
developed
convolutional
neural
networks
(ConvNet)
deep
learning
approach
enhance
accuracy
and
efficiency
toward
distinguishing
various
bacteria.
First,
more
than
1
million
sets
impedance
data
(comprising
42
characteristic
features
each
set)
groups
were
trained
ConvNet
model.
To
improve
analysis,
Spearman
correlation
coefficient
mean
decrease
random
forest
algorithm
introduced
eliminate
feature
interaction
extract
opacity
related
wall
membrane
structure
as
predominant
differentiation.
Moreover,
25
optimized
selected
with
accuracies
>96%
three
(bacilli,
cocci,
vibrio)
>95%
two
bacilli
(Escherichia
coli
Salmonella
enteritidis),
compared
machine
algorithms
(complex
tree,
linear
discriminant,
K-nearest
neighbor
algorithms)
maximum
76.4%.
Furthermore,
was
achieved
on
spiked
samples
mixing
ratios.
The
proposed
learning-assisted
analysis
method
exhibits
advantages
analyzing
huge
number
capacity
extracting
within
multicomponent
information
will
bring
about
progress
advances
fields
both
biosensing
analysis.
Lab on a Chip,
Journal Year:
2024,
Volume and Issue:
24(12), P. 3036 - 3063
Published: Jan. 1, 2024
Current
approaches
for
mechanical
measurements
of
single
cells
compromise
between
fidelity
and
throughput.
Development
non-contact
technologies
optimized
theoretical
modelling
will
advance
characterisation
large
cell
populations.
Lab on a Chip,
Journal Year:
2023,
Volume and Issue:
23(11), P. 2531 - 2539
Published: Jan. 1, 2023
As
a
label-free
and
high-throughput
single
cell
analysis
platform,
impedance
flow
cytometry
(IFC)
suffers
from
clogging
caused
by
narrow
microchannel
as
mechanical
constriction
(MC).
Current
sheath
(SC)
solutions
lack
systematic
evaluation
of
the
performance
proper
guidelines
for
fluid.
Herein,
we
hypothesize
that
viscosity
non-conductive
liquid
is
key
to
SC,
propose
employ
viscous
in
SC
unlock
tradeoff
between
sensitivity
throughput,
while
ensuring
measurement
accuracy.
By
placing
MC
series
same
microfluidic
chip,
established
an
platform
prove
hypothesis.
Through
modeling
experiments,
confirmed
accuracy
(error
<
1.60%
±
4.71%)
w.r.t.
MC,
demonstrated
PEG
solution
achieved
improved
(7.92×)
signal-to-noise
ratio
(1.42×)
measurement,
with
maintained
free
clogging.
Viscous
IFC
also
shows
satisfactory
ability
distinguish
different
types
cancer
cells
subtypes
human
breast
cells.
It
envisioned
paves
way
be
really
usable
practice
clogging-free,
accurate,
sensitive
performance.