Abstract
Multicolor
microscopy
and
super-resolution
optical
are
two
widely
used
techniques
that
greatly
enhance
the
ability
to
distinguish
resolve
structures
in
cellular
imaging.
These
methods
have
individually
transformed
imaging
by
allowing
detailed
visualization
of
subcellular
structures,
as
well
organelle
interactions.
However,
integrating
multicolor
into
a
single
method
remains
challenging
due
issues
like
spectral
overlap,
crosstalk,
photobleaching,
phototoxicity,
technical
complexity.
challenges
arise
from
conflicting
requirements
using
different
fluorophores
for
labeling
with
specific
properties
We
propose
novel
called
phasor-based
fluorescence
spatiotemporal
modulation
(Phasor-FSTM).
This
uses
time-resolved
detection
acquire
data
encoded
photons,
employs
phasor
analysis
simultaneously
separate
multiple
components,
applies
create
images.
Phasor-FSTM
enables
identification
structural
components
greater
spatial
accuracy
on
an
enhanced
laser
scanning
confocal
microscope
single-wavelength
laser.
To
demonstrate
capabilities
Phasor-FSTM,
we
performed
two-color
four-color
at
resolution
~λ/5
observed
interactions
organelles
live
cells
during
continuous
duration
over
20
min.
Our
stands
out
its
simplicity
adaptability,
seamlessly
fitting
existing
microscopes
without
requiring
lines
excitation,
which
also
provides
new
avenue
other
technologies
based
principles
build
multi-color
systems
requirement
lower
budget.
Nature,
Journal Year:
2023,
Volume and Issue:
617(7962), P. 711 - 716
Published: May 24, 2023
Fluorescence
microscopy,
with
its
molecular
specificity,
is
one
of
the
major
characterization
methods
used
in
life
sciences
to
understand
complex
biological
systems.
Super-resolution
approaches
Annual Review of Biophysics,
Journal Year:
2022,
Volume and Issue:
51(1), P. 301 - 326
Published: Feb. 4, 2022
Super-resolution
microscopy
techniques,
and
specifically
single-molecule
localization
(SMLM),
are
approaching
nanometer
resolution
inside
cells
thus
have
great
potential
to
complement
structural
biology
techniques
such
as
electron
for
cell
biology.
In
this
review,
we
introduce
the
different
flavors
of
super-resolution
microscopy,
with
a
special
emphasis
on
SMLM
MINFLUX
(minimal
photon
flux).
We
summarize
recent
technical
developments
that
pushed
these
localization-based
scales
review
experimental
conditions
key
obtaining
data
highest
quality.
Furthermore,
give
an
overview
analysis
methods
highlight
studies
used
gain
insights
into
biologically
relevant
molecular
machines.
Ultimately,
our
perspective
what
is
needed
push
even
further
apply
them
investigating
dynamic
rearrangements
in
living
cells.
Proceedings of the National Academy of Sciences,
Journal Year:
2024,
Volume and Issue:
121(11)
Published: March 4, 2024
Lipid
nanoparticles
(LNPs)
have
recently
emerged
as
a
powerful
and
versatile
clinically
approved
platform
for
nucleic
acid
delivery,
specifically
mRNA
vaccines.
A
major
bottleneck
in
the
field
is
release
of
mRNA-LNPs
from
endosomal
pathways
into
cytosol
cells
where
they
can
execute
their
encoded
functions.
The
data
regarding
mechanism
these
escape
processes
are
limited
contradicting.
Despite
extensive
research,
there
no
consensus
compartment
escape,
cause
inefficient
currently
lacking
robust
method
to
detect
escape.
Here,
we
review
known
mechanisms
available
methods
study
this
process.
We
critically
discuss
limitations
challenges
possibilities
overcome
challenges.
propose
that
development
robust,
quantitative
high-throughput
techniques
timely
essential.
better
understanding
process
will
enable
RNA-LNP
designs
with
improved
efficiency
unlock
new
therapeutic
modalities.
ACS Nano,
Journal Year:
2023,
Volume and Issue:
17(23), P. 23223 - 23261
Published: Dec. 2, 2023
Stimuli-responsive
polymers
can
respond
to
internal
stimuli,
such
as
reactive
oxygen
species
(ROS),
glutathione
(GSH),
and
pH,
biological
enzymes,
external
lasers
ultrasound,
etc.,
by
changing
their
hydrophobicity/hydrophilicity,
degradability,
ionizability,
thus
have
been
widely
used
in
biomedical
applications.
Due
the
characteristics
of
tumor
microenvironment
(TME),
stimuli-responsive
that
cater
specifically
TME
extensively
prepare
smart
nanovehicles
for
targeted
delivery
therapeutic
diagnostic
agents
tissues.
Compared
conventional
drug
nanosystems,
TME-responsive
nanosystems
many
advantages,
high
sensitivity,
broad
applicability
among
different
tumors,
functional
versatility,
improved
biosafety.
In
recent
years,
a
great
deal
research
has
devoted
engineering
efficient
polymeric
significant
improvement
made
both
cancer
diagnosis
therapy.
this
review,
we
summarize
some
advances
involving
use
polymer
nanocarriers
delivery,
imaging,
therapy,
theranostics.
Various
chemical
stimuli
will
be
described
context
nanosystems.
Accordingly,
groups
responsible
responsiveness
strategies
incorporate
these
into
discussed
detail.
With
on
topic
expending
at
fast
pace,
innovative
concepts,
sequential
cascade
release,
NIR-II
multifunctional
formulations,
emerged
popular
enhanced
performance,
which
also
included
here
with
up-to-date
illustrations.
We
hope
review
offer
valuable
insights
selection
optimization
help
accelerate
future
applications
treatment.
Advanced Science,
Journal Year:
2022,
Volume and Issue:
9(19)
Published: Feb. 26, 2022
Bottom-up
synthesized
graphene
nanostructures,
including
0D
quantum
dots
and
1D
nanoribbons,
have
recently
emerged
as
promising
candidates
for
efficient,
green
optoelectronic,
energy
storage
applications.
The
versatility
in
their
molecular
structures
offers
a
large
novel
library
of
nanographenes
with
excellent
adjustable
optical,
electronic,
catalytic
properties.
In
this
minireview,
recent
progress
on
the
fundamental
understanding
properties
different
state-of-the-art
applications
optoelectronics
are
summarized.
pristine
nanographenes,
high
emissivity
intriguing
blinking
effect
dots,
superior
charge
transport
edge-specific
electrochemistry
various
highlighted.
Furthermore,
it
is
shown
that
emerging
nanographene-2D
material-based
van
der
Waals
heterostructures
provide
an
exciting
opportunity
efficient
tunable
characteristics.
Finally,
challenges
opportunities
field
highlighted
by
offering
guidelines
future
combined
efforts
synthesis,
assembly,
spectroscopic,
electrical
studies
well
(nano)fabrication
to
boost
toward
advanced
device
Nature Biotechnology,
Journal Year:
2022,
Volume and Issue:
41(2), P. 282 - 292
Published: Sept. 26, 2022
Abstract
A
fundamental
challenge
in
fluorescence
microscopy
is
the
photon
shot
noise
arising
from
inevitable
stochasticity
of
detection.
Noise
increases
measurement
uncertainty
and
limits
imaging
resolution,
speed
sensitivity.
To
achieve
high-sensitivity
beyond
shot-noise
limit,
we
present
DeepCAD-RT,
a
self-supervised
deep
learning
method
for
real-time
suppression.
Based
on
our
previous
framework
DeepCAD,
reduced
number
network
parameters
by
94%,
memory
consumption
27-fold
processing
time
factor
20,
allowing
two-photon
microscope.
high
signal-to-noise
ratio
can
be
acquired
with
tenfold
fewer
photons
than
standard
approaches.
We
demonstrate
utility
DeepCAD-RT
series
photon-limited
experiments,
including
vivo
calcium
mice,
zebrafish
larva
fruit
flies,
recording
three-dimensional
(3D)
migration
neutrophils
after
acute
brain
injury
3D
dynamics
cortical
ATP
release.
will
facilitate
morphological
functional
interrogation
biological
minimal
budget.
Nature Communications,
Journal Year:
2022,
Volume and Issue:
13(1)
Published: Jan. 13, 2022
Abstract
Single-molecule
localization
microscopy
provides
insights
into
the
nanometer-scale
spatial
organization
of
proteins
in
cells,
however
it
does
not
provide
information
on
their
conformation
and
orientation,
which
are
key
functional
signatures.
Detecting
single
molecules’
orientation
addition
to
cells
is
still
a
challenging
task,
particular
dense
cell
samples.
Here,
we
present
polarization-splitting
scheme
combines
Stochastic
Optical
Reconstruction
Microscopy
(STORM)
with
molecule
2D
wobbling
measurements,
without
requiring
strong
deformation
imaged
point
spread
function.
This
method
called
4polar-STORM
allows,
thanks
control
its
detection
numerical
aperture,
determine
both
infer
3D
orientation.
compatible
relatively
high
densities
diffraction-limited
spots
an
image,
thus
ideally
placed
for
investigation
protein
assemblies
cells.
We
demonstrate
potential
this
actin
filament
organizations
driving
adhesion
motility.