ACS Central Science,
Journal Year:
2024,
Volume and Issue:
unknown
Published: March 21, 2024
This
outlook
explores
how
two
different
molecular
imaging
approaches
might
be
combined
to
gain
insight
into
dynamic,
subcellular
metabolic
processes.
Specifically,
we
discuss
matrix-assisted
laser
desorption/ionization
mass
spectrometry
(MALDI-MSI)
and
stimulated
Raman
scattering
(SRS)
microscopy,
which
have
significantly
pushed
the
boundaries
of
metabolomic
analyses
in
their
own
right,
could
create
comprehensive
images.
We
first
briefly
summarize
recent
advances
for
each
technique.
then
explore
one
overcome
inherent
limitations
individual
method,
by
envisioning
orthogonal
interchangeable
workflows.
Additionally,
delve
potential
benefits
adopting
a
complementary
approach
that
combines
both
MSI
SRS
spectro-microscopy
informing
on
specific
chemical
structures
through
functional-group-specific
targets.
Ultimately,
integrating
strengths
modalities,
researchers
can
achieve
more
understanding
biological
systems,
enabling
precise
investigations.
synergistic
holds
substantial
promise
expand
our
toolkit
studying
metabolites
complex
environments.
Plant Communications,
Journal Year:
2022,
Volume and Issue:
4(3), P. 100508 - 100508
Published: Dec. 20, 2022
Plants
contain
a
large
number
of
cell
types
and
exhibit
complex
regulatory
mechanisms.
Studies
at
the
single-cell
level
have
gradually
become
more
common
in
plant
science.
Single-cell
transcriptomics,
spatial
metabolomics
techniques
been
combined
to
analyze
development.
These
used
study
transcriptomes
metabolomes
tissues
level,
enabling
systematic
investigation
gene
expression
metabolism
specific
during
defined
developmental
stages.
In
this
review,
we
present
an
overview
significant
breakthroughs
multi-omics
plants,
discuss
how
these
approaches
may
soon
play
essential
roles
research.
Chemical Communications,
Journal Year:
2024,
Volume and Issue:
60(16), P. 2137 - 2151
Published: Jan. 1, 2024
In
this
feature
article,
we
discuss
quantitative
mass
spectrometry
imaging
of
therapeutics
and
biomolecules
conducted
by
recent
studies
for
matrix-assisted
laser
desorption/ionization
(MALDI)
desorption
electrospray
ionization
(DESI)
techniques.
PROTEOMICS,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 10, 2025
ABSTRACT
Alzheimer's
disease
(AD)
is
a
leading
cause
of
dementia,
but
the
pathogenesis
mechanism
still
elusive.
Advances
in
proteomics
have
uncovered
key
molecular
mechanisms
underlying
AD,
revealing
complex
network
dysregulated
pathways,
including
amyloid
metabolism,
tau
pathology,
apolipoprotein
E
(APOE),
protein
degradation,
neuroinflammation,
RNA
splicing,
metabolic
dysregulation,
and
cognitive
resilience.
This
review
examines
recent
proteomic
findings
from
AD
brain
tissues
biological
fluids,
highlighting
potential
biomarkers
therapeutic
targets.
By
examining
landscape
them,
we
aim
to
deepen
our
understanding
support
developing
precision
medicine
strategies
for
more
effective
interventions.
Biomolecules,
Journal Year:
2023,
Volume and Issue:
13(3), P. 546 - 546
Published: March 16, 2023
Matrix-assisted
laser
desorption
and
ionization
(MALDI)
is
a
widely
used
soft-ionization
technique
of
modern
mass
spectrometry
(MS).
MALDI
enables
the
analysis
nearly
all
chemical
compounds—including
polar
apolar
(phospho)lipids—with
minimum
extent
fragmentation.
has
some
particular
advantages
(such
as
possibility
to
acquire
spatially-resolved
spectra)
competitive
with
simultaneously
developed
ESI
(electrospray
ionization)
MS.
Although
there
are
still
methodological
aspects
that
need
be
elucidated
in
more
detail,
it
obvious
careful
selection
an
appropriate
matrix
plays
most
important
role
(lipid)
analysis.
Some
lipid
classes
can
detected
exclusively
if
optimum
used,
determines
sensitivity
by
which
within
mixture.
Since
is,
thus,
crucial
for
results,
we
provide
here
update
on
progress
field
since
our
original
review
this
journal
2018.
Thus,
only
development
during
last
five
years
considered,
lipids
sorted
according
increasing
complexity,
starting
free
fatty
acids
ending
cardiolipins
phosphoinositides.
Journal of the American Society for Mass Spectrometry,
Journal Year:
2023,
Volume and Issue:
34(7), P. 1305 - 1314
Published: June 15, 2023
The
glomerulus
is
a
multicellular
functional
tissue
unit
(FTU)
of
the
nephron
that
responsible
for
blood
filtration.
Each
contains
multiple
substructures
and
cell
types
are
crucial
their
function.
To
understand
normal
aging
disease
in
kidneys,
methods
high
spatial
resolution
molecular
imaging
within
these
FTUs
across
whole
slide
images
required.
Here
we
demonstrate
workflow
using
microscopy-driven
selected
sampling
to
enable
5
μm
pixel
size
matrix-assisted
laser
desorption/ionization
mass
spectrometry
(MALDI
IMS)
all
glomeruli
human
kidney
tissues.
Such
entails
large
numbers
pixels,
increasing
data
acquisition
times.
Automating
FTU-specific
enables
high-resolution
analysis
critical
structures,
while
concurrently
maintaining
throughput.
Glomeruli
were
automatically
segmented
coregistered
autofluorescence
microscopy
data,
segmentations
translated
into
MALDI
IMS
measurement
regions.
This
allowed
high-throughput
268
from
single
section.
Unsupervised
machine
learning
used
discover
profiles
glomerular
subregions
differentiate
between
healthy
diseased
glomeruli.
Average
spectra
each
analyzed
Uniform
Manifold
Approximation
Projection
(UMAP)
k-means
clustering,
yielding
7
distinct
groups
differentiated
Pixel-wise
clustering
was
applied
glomeruli,
showing
unique
localized
glomerulus.
Automated
microscopy-driven,
FTU-targeted
maintains
rapid
assessment
at
cellular
identification
features
associated
with
disease.
Biology,
Journal Year:
2023,
Volume and Issue:
12(3), P. 395 - 395
Published: March 2, 2023
Technological
developments
and
improvements
in
single-cell
isolation
analytical
platforms
allow
for
advanced
molecular
profiling
at
the
level,
which
reveals
cell-to-cell
variation
within
admixture
cells
complex
biological
or
clinical
systems.
This
helps
to
understand
cellular
heterogeneity
of
normal
diseased
tissues
organs.
However,
most
studies
focused
on
analysis
nucleic
acids
(e.g.,
DNA
RNA)
mass
spectrometry
(MS)-based
proteins
metabolites
a
single
cell
lagged
until
recently.
Undoubtedly,
MS-based
will
provide
deeper
insight
into
mechanisms
related
health
disease.
review
summarizes
recent
advances
methods
their
applications
biology
medicine.