Analytical Chemistry,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Nov. 20, 2024
The
proteome
integral
solubility
alteration
(PISA)
assay
is
widely
used
for
identifying
drug
targets,
but
it
labor-intensive
and
time-consuming
requires
a
substantial
amount
of
biological
sample.
Aiming
at
enabling
automation
greatly
reducing
the
sample
amount,
we
developed
one-pot
time-induced
(OPTI)-PISA.
Here,
demonstrate
OPTI-PISA
performance
on
targets
multiple
drugs
in
cell
lysate
scaling
down
to
sub-microgram
levels,
making
PISA
method
suitable
NanoProteomics.
can
be
implemented
using
only
standard
equipment
proteomics
lab.
Chemical Science,
Journal Year:
2024,
Volume and Issue:
15(8), P. 2833 - 2847
Published: Jan. 1, 2024
Drug
development
is
plagued
by
inefficiency
and
high
costs
due
to
issues
such
as
inadequate
drug
efficacy
unexpected
toxicity.
Mass
spectrometry
(MS)-based
proteomics,
particularly
isobaric
quantitative
offers
a
solution
unveil
resistance
mechanisms
unforeseen
side
effects
related
off-targeting
pathways.
Thermal
proteome
profiling
(TPP)
has
gained
popularity
for
target
identification
at
the
scale.
However,
it
involves
experiments
with
multiple
temperature
points,
resulting
in
numerous
samples
considerable
variability
large-scale
TPP
analysis.
We
propose
high-throughput
discovery
workflow
that
integrates
single-temperature
TPP,
fully
automated
proteomics
sample
preparation
platform
(autoSISPROT),
data
independent
acquisition
(DIA)
quantification.
The
autoSISPROT
enables
simultaneous
processing
of
96
less
than
2.5
hours,
achieving
protein
digestion,
desalting,
optional
TMT
labeling
(requires
an
additional
1
hour)
96-channel
all-in-tip
operations.
results
demonstrated
excellent
performance
>94%
digestion
efficiency,
>98%
>0.9
intra-
inter-batch
Pearson
correlation
coefficients.
By
automatically
87
samples,
we
identified
both
known
targets
potential
off-targets
20
kinase
inhibitors,
affording
over
10-fold
improvement
throughput
compared
classical
TPP.
This
target/off-target
identification.
Cancer Letters,
Journal Year:
2024,
Volume and Issue:
588, P. 216800 - 216800
Published: March 14, 2024
Drug
development
in
oncology
is
highly
challenging,
with
less
than
5%
success
rate
clinical
trials.
This
alarming
figure
points
out
the
need
to
study
more
details
multiple
biological
effects
of
drugs
specific
contexts.
Indeed,
comprehensive
assessment
drug
poly-pharmacology
can
provide
insights
into
their
therapeutic
and
adverse
effects,
optimize
utilization
maximize
Recent
technological
advances
have
made
possible
in-depth
investigation
poly-pharmacology.
review
first
highlights
high-throughput
methodologies
that
been
used
unveil
new
mechanisms
action
existing
drugs.
Then,
we
discuss
how
emerging
chemo-proteomics
strategies
allow
effectively
dissecting
an
unsupervised
manner.
Expert Reviews in Molecular Medicine,
Journal Year:
2024,
Volume and Issue:
26
Published: Jan. 1, 2024
Abstract
Target
deconvolution
can
help
understand
how
compounds
exert
therapeutic
effects
and
accelerate
drug
discovery
by
helping
optimise
safety
efficacy,
revealing
mechanisms
of
action,
anticipate
off-target
identifying
opportunities
for
expansion.
Chemoproteomics,
a
combination
chemical
biology
with
mass
spectrometry
has
transformed
target
deconvolution.
This
review
discusses
modification-free
chemoproteomic
approaches
that
leverage
the
change
in
protein
thermodynamics
induced
small
molecule
ligand
binding.
Unlike
modification-based
methods
relying
on
enriching
specific
targets,
these
offer
proteome-wide
evaluations,
driven
advancements
sensitivity,
increasing
proteome
coverage
quantitation
methods.
Advances
based
denaturation/precipitation
thermal
or
denaturation,
protease
degradation
are
evaluated,
emphasising
evolving
landscape
chemoproteomics
its
potential
impact
future
drug-development
strategies.
Molecular & Cellular Proteomics,
Journal Year:
2025,
Volume and Issue:
unknown, P. 100945 - 100945
Published: March 1, 2025
Limited
proteolysis
coupled
with
mass
spectrometry
(LiP-MS)
has
emerged
as
a
powerful
technique
for
detecting
protein
structural
changes
and
drug-protein
interactions
on
proteome-wide
scale.
However,
there
is
no
consensus
the
best
quantitative
proteomics
workflow
analyzing
LiP-MS
data.
In
this
study,
we
comprehensively
benchmarked
two
major
quantification
approaches-data-independent
acquisition
(DIA)
tandem
tag
(TMT)
isobaric
labeling-in
combination
LiP-MS,
using
drug-target
deconvolution
assay
model
system.
Our
results
show
that
while
TMT
labeling
enabled
of
more
peptides
proteins
lower
coefficients
variation
(CVs),
DIA-MS
exhibited
greater
accuracy
in
identifying
true
drug
targets
stronger
dose-response
correlation
peptides.
Additionally,
evaluated
performance
freely
available
(FragPipe)
versus
commercial
(Spectronaut)
software
tools
analysis,
revealing
choice
between
precision
sensitivity
largely
depends
specific
experimental
context.
findings
underscore
importance
selecting
appropriate
strategy
based
study
objectives.
This
work
provides
valuable
guidelines
researchers
discovery,
highlights
how
advancements
instrumentation,
such
Astral
spectrometer,
may
further
improve
sequence
coverage,
potentially
reducing
need
labeling.
Nature Communications,
Journal Year:
2024,
Volume and Issue:
15(1)
Published: Oct. 16, 2024
Proteins
are
the
primary
targets
of
almost
all
small
molecule
drugs.
However,
even
most
selectively
designed
drugs
can
potentially
target
several
unknown
proteins.
Identification
potential
drug
facilitate
design
new
and
repurposing
existing
ones.
Current
state-of-the-art
proteomics
methodologies
enable
screening
thousands
proteins
against
a
limited
number
molecules.
Here
we
report
development
label-free
quantitative
approach
that
enables
proteome-wide
organic
molecules
in
scalable,
reproducible,
rapid
manner
by
streamlining
proteome
integral
solubility
alteration
(PISA)
assay.
We
used
rat
organs
ex-vivo
to
determine
organ
specific
medical
enzyme
inhibitors
identify
for
common
such
as
Ibuprofen.
Finally,
global
profiling
revealed
overarching
trends
how
affect
through
either
direct
or
indirect
protein
interactions.
Frontiers in Analytical Science,
Journal Year:
2023,
Volume and Issue:
3
Published: June 22, 2023
Functional
proteomics
aims
to
elucidate
biological
functions,
mechanisms,
and
pathways
of
proteins
proteoforms
at
the
molecular
level
examine
complex
cellular
systems
disease
states.
A
series
stability
methods
have
been
developed
protein
functionality
by
measuring
resistance
a
chemical
or
thermal
denaturation
proteolysis.
These
can
be
applied
measure
thousands
in
samples
such
as
cell
lysate,
intact
cells,
tissues,
other
fluids
proteome
stability.
Stability
popularly
observe
shifts
upon
ligand
binding
for
drug
target
identification.
More
recently,
these
characterize
effect
structural
changes
those
caused
post-translational
modifications
(PTMs)
mutations,
which
affect
structures
interactions
diversify
functions.
Here,
we
discussed
current
application
suite
methods,
including
profiling
(TPP),
from
rates
oxidation
(SPROX),
limited
proteolysis
(LiP)
PTM-induced
on
We
also
discuss
future
perspectives
highlighting
integration
top-down
mass
spectrometry
proteoform
understand
function
variable
modifications.
New
antimalarial
drug
candidates
that
act
via
novel
mechanisms
are
urgently
needed
to
combat
malaria
resistance.
Here,
we
describe
the
multi-omic
chemical
validation
of
Plasmodium
M1
alanyl
metalloaminopeptidase
as
an
attractive
target
using
selective
inhibitor,
MIPS2673.
MIPS2673
demonstrated
potent
inhibition
recombinant
falciparum
(
Pf
A-M1)
and
vivax
Pv
metalloaminopeptidases,
with
selectivity
over
other
human
aminopeptidases,
displayed
excellent
in
vitro
activity
no
significant
host
cytotoxicity.
Orthogonal
label-free
chemoproteomic
methods
based
on
thermal
stability
limited
proteolysis
whole
parasite
lysates
revealed
solely
targets
A-M1
parasites,
also
enabling
estimation
binding
site
within
~5
Å
determined
by
X-ray
crystallography.
Finally,
functional
investigation
untargeted
metabolomics
inhibits
key
role
haemoglobin
digestion.
Combined,
our
unbiased
deconvolution
confirmed
on-target
MIPS2673,
validated
a
promising
strategy.
Cell Reports Methods,
Journal Year:
2024,
Volume and Issue:
4(2), P. 100717 - 100717
Published: Feb. 1, 2024
Method
development
for
mass
spectrometry
(MS)-based
thermal
shift
proteomic
assays
have
advanced
to
probe
small
molecules
with
known
and
unknown
protein-ligand
interaction
mechanisms
specificity,
which
is
predominantly
used
in
characterization
of
drug-protein
interactions.
In
the
discovery
target
off-target
interactions,
a
thorough
investigation
method
their
impact
on
sensitivity
accuracy
protein-small
molecule
protein-protein
interactions
warranted.
this
review,
we
discuss
areas
improvement
at
each
stage
proteome
profiling
data
analysis
that
includes
processing
MS-based
data,
development,
effect
overall
quality
profiles.
We
also
overview
optimization
experimental
strategies
prioritization
an
increased
number
independent
biological
replicates
over
evaluated
temperatures.