Toxoplasma
gondii,
a
protozoan
parasite
with
the
ability
to
infect
various
warm-blooded
vertebrates,
including
humans,
is
causative
agent
of
toxoplasmosis.
This
infection
poses
significant
risks,
leading
severe
complications
in
immunocompromised
individuals
and
potentially
affecting
fetus
through
congenital
transmission.
A
comprehensive
understanding
intricate
molecular
interactions
between
T.
gondii
its
host
pivotal
for
development
effective
therapeutic
strategies.
review
emphasizes
crucial
role
proteomics
research,
specific
focus
on
host-parasite
interactions,
post-translational
modifications
(PTMs),
PTM
crosstalk,
ongoing
efforts
drug
discovery.
Additionally,
we
provide
an
overview
recent
advancements
techniques,
encompassing
interactome
sample
preparation
methods
such
as
BioID,
APEX,
Y2H,
well
approaches,
single-cell
analysis,
DIA,
targeted,
top-down,
plasma
proteomics.
Furthermore,
discuss
integration
other
omics
technologies,
highlighting
potential
unraveling
mechanisms
pathogenesis
identifying
novel
targets.
bioRxiv (Cold Spring Harbor Laboratory),
Год журнала:
2023,
Номер
unknown
Опубликована: Июнь 8, 2023
Abstract
The
complexity
of
human
physiology
arises
from
well-orchestrated
interactions
between
trillions
single
cells
in
the
body.
While
single-cell
RNA
sequencing
(scRNA-seq)
has
enhanced
our
understanding
cell
diversity,
gene
expression
alone
does
not
fully
characterize
phenotypes.
Additional
molecular
dimensions,
such
as
proteins,
are
needed
to
define
cellular
states
accurately.
Mass
spectrometry
(MS)-based
proteomics
emerged
a
powerful
tool
for
comprehensive
protein
analysis,
including
applications.
However,
challenges
remain
terms
throughput
and
proteomic
depth,
order
maximize
biological
impact
by
Spectrometry
(scp-MS)
workflows.
This
study
leverages
novel
high-resolution,
accurate
mass
(HRAM)
instrument
platform,
consisting
both
an
Orbitrap
innovative
HRAM
Asymmetric
Track
Lossless
(Astral)
analyzer.
Astral
analyzer
offers
high
sensitivity
resolution
through
lossless
ion
transfer
unique
flight
track
design.
We
evaluate
performance
Thermo
Scientific
MS
using
Data-Independent
Acquisition
(DIA)
assess
proteome
depth
quantitative
precision
ultra-low
input
samples.
Optimal
DIA
method
parameters
identified,
we
demonstrate
ability
cycle
dynamics
Human
Embryonic
Kidney
(HEK293)
cells,
cancer
heterogeneity
primary
Acute
Myeloid
Leukemia
(AML)
culture
model.
Analytical Chemistry,
Год журнала:
2023,
Номер
95(26), С. 9881 - 9891
Опубликована: Июнь 20, 2023
A
linear
ion
trap
(LIT)
is
an
affordable,
robust
mass
spectrometer
that
provides
fast
scanning
speed
and
high
sensitivity,
where
its
primary
disadvantage
inferior
accuracy
compared
to
more
commonly
used
time-of-flight
or
orbitrap
(OT)
analyzers.
Previous
efforts
utilize
the
LIT
for
low-input
proteomics
analysis
still
rely
on
either
built-in
OTs
collecting
precursor
data
OT-based
library
generation.
Here,
we
demonstrate
potential
versatility
of
as
a
stand-alone
analyzer
all
spectrometry
(MS)
measurements,
including
To
test
this
approach,
first
optimized
acquisition
methods
performed
library-free
searches
with
without
entrapment
peptides
evaluate
both
detection
quantification
accuracy.
We
then
generated
matrix-matched
calibration
curves
estimate
lower
limit
using
only
10
ng
starting
material.
While
LIT-MS1
measurements
provided
poor
quantitative
accuracy,
LIT-MS2
were
quantitatively
accurate
down
0.5
column.
Finally,
suitable
strategy
spectral
generation
from
material,
which
analyze
single-cell
samples
by
LIT-DIA
LIT-based
libraries
few
40
cells.
Journal of the American Society for Mass Spectrometry,
Год журнала:
2024,
Номер
35(6), С. 1120 - 1127
Опубликована: Март 21, 2024
Capillary
zone
electrophoresis-mass
spectrometry
(CZE-MS)
has
been
recognized
as
a
valuable
technique
for
the
proteomics
of
mass-limited
biological
samples
(i.e.,
single
cells).
However,
its
broad
adoption
cell
(SCP)
human
cells
impeded
by
low
sample
loading
capacity
CZE,
only
allowing
us
to
use
less
than
5%
available
peptide
material
each
measurement.
Here
we
present
reversed-phase-based
solid-phase
microextraction
(RP-SPME)-CZE-MS
platform
solve
issue,
paving
way
SCP
using
CZE-MS.
The
RP-SPME-CZE
system
was
constructed
in
one
fused
silica
capillary
with
zero
dead
volume
connection
via
situ
synthesis
frit,
followed
packing
C8
beads
into
form
roughly
2
mm
long
SPME
section.
Peptides
captured
were
eluted
buffer
containing
30%
(v/v)
acetonitrile
and
50
mM
ammonium
acetate
(pH
6.5),
dynamic
pH
junction-based
SPME-CZE-MS
enabled
injection
nearly
40%
identified
257
±
24
proteins
523
69
peptides
(N
=
2)
Q-Exactive
HF
mass
spectrometer
when
0.25
ng
commercial
HeLa
digest
vial
0.1
injected.
amount
is
equivalent
protein
cell.
data
indicate
that
ready
cells.
Communications Chemistry,
Год журнала:
2024,
Номер
7(1)
Опубликована: Апрель 10, 2024
Abstract
Mapping
the
ligandability
or
potential
druggability
of
all
proteins
in
human
proteome
is
a
central
goal
mass
spectrometry-based
covalent
chemoproteomics.
Achieving
this
ambitious
objective
requires
high
throughput
and
coverage
sample
preparation
liquid
chromatography-tandem
spectrometry
analysis
for
hundreds
to
thousands
reactive
compounds
chemical
probes.
Conducting
chemoproteomic
screens
at
scale
benefits
from
technical
innovations
that
achieve
increased
throughput.
Here
we
realize
vision
by
establishing
silane-based
cleavable
linkers
isotopically-labeled
proteomics-tandem
tag
(sCIP-TMT)
proteomic
platform,
which
distinguished
early
pooling
increases
sCIP-TMT
pairs
custom
click-compatible
sCIP
capture
reagent
readily
functionalized
yield
with
commercially
available
TMT
reagents.
Synthesis
benchmarking
10-plex
set
reveal
substantial
decrease
time
together
accuracy
quantification.
By
screening
focused
four
cysteine-reactive
electrophiles,
demonstrate
utility
target
hunting,
identifying
789
total
liganded
cysteines.
Distinguished
its
compatibility
established
enrichment
quantification
protocols,
expect
will
translate
wide
range
applications.
Molecular & Cellular Proteomics,
Год журнала:
2023,
Номер
22(4), С. 100518 - 100518
Опубликована: Фев. 23, 2023
Single-cell
proteomics
is
growing
rapidly
and
has
made
several
technological
advancements.
As
most
research
been
focused
on
improving
instrumentation
sample
preparation
methods,
very
little
attention
given
to
algorithms
responsible
for
identifying
quantifying
proteins.
Given
the
inherent
difference
between
bulk
data
single-cell
data,
it
necessary
realize
that
current
being
employed
were
designed
have
underlying
assumptions
may
not
hold
true
data.
In
order
develop
optimize
we
need
characterize
differences
assess
how
perform
Here,
present
a
review
of
peptides
We
will
give
each
type
algorithm
works,
relies
on,
performs
possible
optimizations
solutions
could
be
used
address
in
bioRxiv (Cold Spring Harbor Laboratory),
Год журнала:
2024,
Номер
unknown
Опубликована: Июль 31, 2024
Abstract
Single-cell
proteomics
by
mass
spectrometry
(scp-MS)
holds
the
potential
to
provide
unprecedented
insights
into
molecular
features
directly
linked
cellular
phenotype,
while
deconvoluting
complex
organisms
their
basic
building
blocks.
Tailored
sample
preparation
that
maximizes
extracted
amount
of
material
is
introduced
spectrometer
has
rapidly
propelled
field
forward.
However,
measured
signal
still
at
lower
edge
detection
approaching
sensitivity
boundary
current
instrumentation.
Here,
we
investigate
capacity
enhanced
Orbitrap
Astral
facilitate
deeper
proteome
profiles
from
low-input
single-cell
samples.
We
carry
out
a
comprehensive
data
acquisition
method
survey
pinpoint
which
parameters
most
sensitivity.
Furthermore,
explore
quantitative
accuracy
obtained
measurements
ensure
abundances
are
in
line
with
expected
ground
truth
values.
culminate
our
technical
exploration
generating
small
datasets
two
cultured
cell
lines
and
primary
bone
marrow
sample,
showcase
obtainable
coverage
differences
different
source
materials.
Finally,
as
proof
concept
protein
covariation
how
information
on
known
complexes
captured
inherently
scp-MS
data.
Authorea (Authorea),
Год журнала:
2024,
Номер
unknown
Опубликована: Авг. 1, 2024
Single-cell
proteomics
(SCP)
aims
to
characterize
the
proteome
of
individual
cells,
providing
insights
into
complex
biological
systems.
It
reveals
subtle
differences
in
distinct
cellular
populations
that
bulk
analysis
might
overlook,
which
is
essential
for
understanding
disease
mechanisms
and
developing
targeted
therapies.
Mass
spectrometry
(MS)
methods
SCP
allow
identification
quantification
thousands
proteins
from
cells
this
review
highlights
role
data-independent
acquisition
MS
(DIA-MS)
SCP.
One
major
hurdle
limited
material
single-cell
samples,
but
DIA-based
techniques
offer
multiple
potential
solutions
their
analysis.
Utilizing
wide
precursor
isolation
windows
fragment
peptides
simultaneously,
improve
sensitivity,
quantitative
accuracy,
reproducibility
at
a
cost
data
complexity.
DIA
can
also
be
combined
with
sample
multiplexing
increase
throughput,
currently
key
limitation
Challenges
remain
interpreting
multiplexed
experiments,
particularly
regards
isobaric
tagging
methods.
Even
still,
we
believe
approaches
will
play
our
systems
biology.