Biology,
Journal Year:
2023,
Volume and Issue:
12(10), P. 1301 - 1301
Published: Oct. 2, 2023
Cellular
senescence
is
a
state
of
irreversible
growth
arrest
with
profound
phenotypic
changes,
including
the
senescence-associated
secretory
phenotype
(SASP).
Senescent
cell
accumulation
contributes
to
aging
and
many
pathologies
chronic
inflammation,
type
2
diabetes,
cancer,
neurodegeneration.
Targeted
removal
senescent
cells
in
preclinical
models
promotes
health
longevity,
suggesting
that
selective
elimination
promising
therapeutic
approach
for
mitigating
myriad
age-related
humans.
However,
moving
senescence-targeting
drugs
(senotherapeutics)
into
clinic
will
require
targets
biomarkers,
fueled
by
an
improved
understanding
complex
dynamic
biology
populations
their
molecular
profiles,
as
well
mechanisms
underlying
emergence
maintenance
SASP.
Advances
mass
spectrometry-based
proteomic
technologies
workflows
have
potential
address
these
needs.
Here,
we
review
translational
research
how
approaches
added
our
knowledge
date.
Further,
lay
out
roadmap
from
fundamental
biological
discovery
clinical
translation
senotherapeutic
through
development
application
emerging
technologies,
targeted
untargeted
approaches,
bottom-up
top-down
methods,
stability
proteomics,
surfaceomics.
These
are
integral
probing
cellular
composition
dynamics
and,
ultimately,
senotype-specific
biomarkers
senotherapeutics
(senolytics
senomorphics).
This
aims
highlight
areas
applications
proteomics
aid
exploring
new
future
senotherapeutics.
International Journal of Molecular Sciences,
Journal Year:
2023,
Volume and Issue:
24(6), P. 5350 - 5350
Published: March 10, 2023
Liquid
chromatography–tandem
mass
spectrometry
(LC–MS/MS)-based
proteomics
is
a
powerful
technique
for
profiling
proteomes
of
cells,
tissues,
and
body
fluids.
Typical
bottom-up
proteomic
workflows
consist
the
following
three
major
steps:
sample
preparation,
LC–MS/MS
analysis,
data
analysis.
analysis
techniques
have
been
intensively
developed,
whereas
laborious
process,
remains
difficult
task
main
challenge
in
different
applications.
Sample
preparation
crucial
stage
that
affects
overall
efficiency
study;
however,
it
prone
to
errors
has
low
reproducibility
throughput.
In-solution
digestion
filter-aided
are
typical
widely
used
methods.
In
past
decade,
novel
methods
improve
facilitate
entire
process
or
integrate
fractionation
reported
reduce
time,
increase
throughput,
reproducibility.
this
review,
we
outlined
current
proteomics,
including
on-membrane
digestion,
bead-based
immobilized
enzymatic
suspension
trapping.
Additionally,
summarized
discussed
devices
integrating
steps
peptide
fractionation.
ACS Measurement Science Au,
Journal Year:
2024,
Volume and Issue:
4(4), P. 338 - 417
Published: June 4, 2024
Proteomics
is
the
large
scale
study
of
protein
structure
and
function
from
biological
systems
through
identification
quantification."Shotgun
proteomics"
or
"bottom-up
prevailing
strategy,
in
which
proteins
are
hydrolyzed
into
peptides
that
analyzed
by
mass
spectrometry.Proteomics
studies
can
be
applied
to
diverse
ranging
simple
proteoforms,
protein-protein
interactions,
structural
alterations,
absolute
relative
quantification,
post-translational
modifications,
stability.To
enable
this
range
different
experiments,
there
strategies
for
proteome
analysis.The
nuances
how
proteomic
workflows
differ
may
challenging
understand
new
practitioners.Here,
we
provide
a
comprehensive
overview
proteomics
methods.We
cover
biochemistry
basics
extraction
interpretation
orthogonal
validation.We
expect
Review
will
serve
as
handbook
researchers
who
field
bottom-up
proteomics.
Medicinal Research Reviews,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 9, 2025
ABSTRACT
Proteins
hold
pivotal
importance
since
many
diseases
manifest
changes
in
protein
activity.
Proteomics
techniques
provide
a
comprehensive
exploration
of
structure,
abundance,
and
function
biological
samples,
enabling
the
holistic
characterization
overall
organisms.
Nowadays,
breadth
emerging
methodologies
proteomics
is
unprecedentedly
vast,
with
constant
optimization
technologies
sample
processing,
data
collection,
analysis,
its
scope
application
steadily
transitioning
from
bench
to
clinic.
Here,
we
offer
an
insightful
review
technical
developments
applications
biomedicine
over
past
5
years.
We
focus
on
profound
contributions
profiling
disease
spectra,
discovering
new
biomarkers,
identifying
promising
drug
targets,
deciphering
alterations
conformation,
unearthing
protein–protein
interactions.
Moreover,
summarize
cutting‐edge
potential
breakthroughs
pipeline
principal
challenges
proteomics.
Based
these,
aspire
broaden
applicability
inspire
researchers
enhance
our
understanding
complex
systems
by
utilizing
such
techniques.
Proceedings of the National Academy of Sciences,
Journal Year:
2023,
Volume and Issue:
120(19)
Published: May 1, 2023
Single-cell
proteomics
has
emerged
as
a
powerful
method
to
characterize
cellular
phenotypic
heterogeneity
and
the
cell-specific
functional
networks
underlying
biological
processes.
However,
significant
challenges
remain
in
single-cell
for
analysis
of
proteoforms
arising
from
genetic
mutations,
alternative
splicing,
post-translational
modifications.
Herein,
we
have
developed
highly
sensitive
functionally
integrated
top–down
comprehensive
single
cells.
We
applied
this
muscle
fibers
(SMFs)
resolve
their
heterogeneous
proteomic
properties
at
level.
Notably,
detected
large
(>200
kDa)
SMFs.
Using
SMFs
obtained
three
distinct
muscles,
found
fiber-to-fiber
among
sarcomeric
which
can
be
related
heterogeneity.
Importantly,
multiple
isoforms
myosin
heavy
chain
(~223
kDa),
motor
protein
that
drives
contraction,
with
high
reproducibility
enable
classification
individual
fiber
types.
This
study
reveals
cell
establishes
direct
relationship
between
types,
highlighting
potential
uncovering
molecular
underpinnings
cell-to-cell
variation
complex
systems.
Analytical Chemistry,
Journal Year:
2025,
Volume and Issue:
97(5), P. 2639 - 2647
Published: Jan. 31, 2025
Even
though
mAbs
have
attracted
the
biggest
interest
in
development
of
therapeutic
proteins,
next-generation
therapeutics
such
as
single-domain
antibodies
(sdAb)
are
propelling
increasing
attention
new
alternatives
with
appealing
applications
different
clinical
areas.
These
constructs
small
proteins
formed
by
a
variable
domain
heavy
chain
an
antibody
multiple
and
production
benefits
compared
their
mAb
counterparts.
can
be
subjected
to
bioconjugation
processes
form
antibody-drug
conjugates
(sdADCs)
hence
increase
potency,
akin
other
nanobodies
related
products
require
dedicated
analytical
strategies
fully
characterize
primary
structure
prior
release
market.
In
this
study,
we
report
for
first
time
extensive
sequence
characterization
conjugated
anti-EGFR
14
kDa
sdADC
using
state-of-the-art
top-down
mass
spectrometry
combination
liquid
chromatography
(LC-TD-MS).
Mass
analysis
revealed
highly
homogeneous
sample
one
molecule.
Subsequently,
reduced
was
submitted
fragmentation
techniques,
namely,
higher-energy
collisional
dissociation,
electron-transfer
collision
allowing
unambiguously
assess
conjugation
site
24
diagnostic
fragment
ions
85%
global
coverage.
The
coverage
nonreduced
protein
significantly
lower
(around
16%);
however,
spectra
corroborated
presence
intramolecular
disulfide
bridge
along
localization
site.
Altogether,
our
results
pinpoint
difficulties
challenges
associated
sdAb-derived
formats
LC
scale
due
remarkable
stability
consequence
bridge.
However,
use
complementary
activation
techniques
identification
specific
ion
fragments
allows
improved
coverage,
bond,
unambiguous
PROTEOMICS,
Journal Year:
2025,
Volume and Issue:
unknown
Published: March 18, 2025
ABSTRACT
Posttranslational
modifications
(PTMs)
are
of
significant
interest
in
molecular
biomedicine
due
to
their
crucial
role
signal
transduction
across
various
cellular
and
organismal
processes.
Characterizing
PTMs,
distinguishing
between
functional
inert
modifications,
quantifying
occupancies,
understanding
PTM
crosstalk
challenging
tasks
any
biosystem.
Studying
each
often
requires
a
specific,
labor‐intensive
experimental
design.
Here,
we
present
PTM‐centric
proteome
informatic
pipeline
for
predicting
relevant
PTMs
mass
spectrometry‐based
proteomics
data
without
prior
information.
Once
predicted,
these
silico
identified
can
be
incorporated
into
refined
database
search
compared
measured
data.
As
practical
application,
demonstrate
how
this
used
study
glycoproteomics
oral
squamous
cell
carcinoma
based
on
the
profile
primary
tumors.
Subsequently,
experimentally
proteins
that
differentially
expressed
cells
treated
with
multikinase
inhibitors
dasatinib
staurosporine
using
proteomics.
Computational
enrichment
analysis
was
then
employed
determine
potential
induced
by
both
drugs.
Finally,
conducted
an
additional
round
predicted
PTMs.
Our
successfully
analyzed
enriched
detected
not
initial
search.
findings
support
effectiveness
searching
MS
computational
analysis,
propose
integrating
approach
future
engines.
Analytical Chemistry,
Journal Year:
2023,
Volume and Issue:
95(24), P. 9280 - 9287
Published: June 8, 2023
Complete
O-glycosite
characterization,
including
identification
of
the
peptides,
localization
glycosites,
and
mapping
glycans,
has
been
a
persistent
challenge
in
O-glycoproteomics
owing
to
technical
challenges
surrounding
O-glycan
analysis.
Multi-glycosylated
peptides
pose
an
even
greater
their
potential
heterogeneity.
Ultraviolet
photodissociation
(UVPD)
can
localize
multiple
post-translational
modifications
is
well-suited
for
characterization
glycans.
Three
glycoproteins
were
assessed
based
on
strategy
combining
use
O-glycoprotease
IMPa
HCD-triggered
UVPD
complete
O-glycopeptides.
This
approach
localized
adjacent
or
proximal
O-glycosites
individual
glycopeptides
identified
previously
unknown
glycosite
etanercept
at
S218.
Nine
different
glycoforms
characterized
as
multi-glycosylated
peptide
from
etanercept.
The
performance
was
compared
that
HCD
EThcD
constituent