Nephrology Dialysis Transplantation,
Journal Year:
2023,
Volume and Issue:
39(3), P. 453 - 462
Published: Sept. 11, 2023
ABSTRACT
Background
and
hypothesis
Specific
urinary
peptides
hold
information
on
disease
pathophysiology,
which,
in
combination
with
artificial
intelligence,
could
enable
non-invasive
assessment
of
chronic
kidney
(CKD)
aetiology.
Existing
approaches
are
generally
specific
for
the
diagnosis
single
aetiologies.
We
present
development
models
able
to
simultaneously
distinguish
spatially
visualize
multiple
CKD
Methods
The
peptide
data
1850
healthy
control
(HC)
[diabetic
(DKD),
immunoglobulin
A
nephropathy
(IgAN)
vasculitis]
participants
were
extracted
from
Human
Urinary
Proteome
Database.
Uniform
manifold
approximation
projection
(UMAP)
coupled
a
support
vector
machine
algorithm
was
used
generate
multi-peptide
perform
binary
(DKD,
HC)
multiclass
HC,
IgAN,
vasculitis)
classifications.
This
pipeline
compared
current
state-of-the-art
single-aetiology
models.
Results
In
an
independent
test
set,
developed
achieved
90.35%
70.13%
overall
predictive
accuracies,
respectively,
Omitting
UMAP
step
led
improved
accuracies
(96.14%
85.06%,
respectively).
As
expected,
HC
class
distinguished
highest
accuracy.
different
classes
displayed
tendency
form
distinct
clusters
3D
space
based
their
state.
Conclusion
effective
basis
aetiology
differentiation
using
learning
Although
adding
did
not
improve
prediction
accuracy,
it
may
provide
unique
visualization
advantage.
Additional
studies
warranted
further
validate
pipeline's
clinical
potential
as
well
expand
other
aetiologies
also
diseases.
International Journal of Molecular Sciences,
Journal Year:
2024,
Volume and Issue:
25(3), P. 1391 - 1391
Published: Jan. 23, 2024
Bioactive
peptides,
specific
protein
fragments
with
positive
health
effects,
are
gaining
traction
in
drug
development
for
advantages
like
enhanced
penetration,
low
toxicity,
and
rapid
clearance.
This
comprehensive
review
navigates
the
intricate
landscape
of
peptide
science,
covering
discovery
to
functional
characterization.
Beginning
a
peptidomic
exploration
natural
sources,
emphasizes
search
novel
peptides.
Extraction
approaches,
including
enzymatic
hydrolysis,
microbial
fermentation,
specialized
methods
disulfide-linked
extensively
covered.
Mass
spectrometric
analysis
techniques
data
acquisition
identification,
such
as
liquid
chromatography,
capillary
electrophoresis,
untargeted
analysis,
bioinformatics,
thoroughly
outlined.
The
bioactivity
incorporates
various
methodologies,
from
vitro
assays
silico
techniques,
advanced
approaches
phage
display
cell-based
assays.
also
discusses
structure–activity
relationship
context
antimicrobial
peptides
(AMPs),
ACE-inhibitory
(ACEs),
antioxidative
(AOPs).
Concluding
key
findings
future
research
directions,
this
interdisciplinary
serves
reference,
offering
holistic
understanding
their
potential
therapeutic
applications.
Expert Review of Proteomics,
Journal Year:
2020,
Volume and Issue:
17(4), P. 257 - 273
Published: April 2, 2020
Introduction
The
importance
of
biomarkers
for
pharmaceutical
drug
development
and
clinical
diagnostics
is
more
significant
than
ever
in
the
current
shift
toward
personalized
medicine.
Biomarkers
have
taken
a
central
position
either
as
companion
markers
to
support
patient
selection,
or
indicators
aiming
detect
earliest
perturbations
indicative
disease,
minimizing
therapeutic
intervention
even
enabling
disease
reversal.
Protein
are
particular
interest
given
their
role
biochemical
pathways.
Hence,
capabilities
analyze
multiple
protein
one
assay
highly
interesting
biomedical
research.Areas
covered
We
here
review
methods
that
suitable
robust,
high
throughput,
standardized,
affordable
analysis
multiplex
format.
describe
innovative
developments
immunoassays,
vanguard
laboratories,
mass
spectrometry,
increasingly
implemented
biomarker
analysis.
Moreover,
emerging
techniques
discussed
with
potentially
improved
capture,
separation,
detection
will
further
boost
analyses.Expert
commentary
clinically
applied
assays
essential
multi-protein
signatures
provide
comprehensive
information
about
biological
systems
single
biomarkers,
leading
insights
mechanisms
diagnostics,
effect
Journal of Proteome Research,
Journal Year:
2021,
Volume and Issue:
20(8), P. 3782 - 3797
Published: July 16, 2021
Improvements
in
both
liquid
chromatography
(LC)
and
mass
spectrometry
(MS)
instrumentation
have
greatly
enhanced
proteomic
small
molecule
metabolomic
analysis
recent
years.
Less
focus
has
been
on
the
improved
capability
to
detect
quantify
bioactive
peptides,
even
though
exact
sequences
of
peptide
species
produced
can
important
biological
consequences.
Endogenous
hormones,
for
example,
are
generated
by
targeted
regulated
cleavage
peptides
from
their
prohormone
sequence.
This
process
may
include
organ
specific
variants,
as
proglucagon
is
converted
glucagon
pancreas
but
glucagon-like
peptide-1
(GLP-1)
intestine,
with
raising,
whereas
GLP-1,
an
incretin,
lowering
blood
glucose.
Therefore,
peptidomics
workflows
must
preserve
structure
processed
products
prevent
misidentification
ambiguous
species.
The
poor
vivo
vitro
stability
matrices
a
major
factor
that
needs
be
considered
when
developing
methods
study
them.
bioinformatic
data
sets
requires
inclusion
post-translational
modifications,
which
critical
function
many
peptides.
review
aims
discuss
contrast
various
extraction,
analytical,
bioinformatics
approaches
used
human
studies
multitude
matrices.
In
the
context
of
precision
medicine,
disease
treatment
requires
individualized
strategies
based
on
underlying
molecular
characteristics
to
overcome
therapeutic
challenges
posed
by
heterogeneity.
For
this
purpose,
it
is
essential
develop
new
biomarkers
diagnose,
stratify,
or
possibly
prevent
diseases.
Plasma
an
available
source
that
greatly
reflects
physiological
and
pathological
conditions
body.
An
increasing
number
studies
are
focusing
proteins
peptides,
including
many
involving
Human
Proteome
Project
(HPP)
Organization
(HUPO),
proteomics
peptidomics
techniques
emerging
as
critical
tools
for
developing
novel
medicine
preventative
measures.
Excitingly,
plasma
toolbox
exhibits
a
huge
potential
studying
pathogenesis
diseases
(e.g.,
COVID-19
cancer),
identifying
valuable
improving
clinical
management.
However,
enormous
complexity
wide
dynamic
range
makes
proteome
profiling
challenging.
Herein,
we
summarize
recent
advances
in
with
focus
their
roles
cancer
research,
aiming
emphasize
significance
applications
medicine.
Journal of Pharmaceutical Analysis,
Journal Year:
2023,
Volume and Issue:
13(4), P. 323 - 339
Published: Feb. 6, 2023
Capillary
electrochromatography
(CEC)
plays
a
significant
role
in
chiral
separation
via
the
double
principle,
partition
coefficient
difference
between
two
phases,
and
electroosmotic
flow-driven
separation.
Given
distinct
properties
of
inner
wall
stationary
phase
(SP),
ability
each
SP
differs
from
one
another.
Particularly,
it
provides
large
room
for
promising
applications
open
tubular
capillary
(OT-CEC).
We
divided
OT-CEC
SPs
developed
over
past
four
years
into
six
types:
ionic
liquids,
nanoparticle
materials,
microporous
biomaterials,
non-nanopolymers,
others,
to
mainly
introduce
their
characteristics
drug
There
also
added
few
classic
that
occurred
within
ten
as
supplements
enrich
features
SP.
Additionally,
we
discuss
metabolomics,
food,
cosmetics,
environment,
biology
analytes
addition
drugs.
an
increasingly
may
promote
development
electrophoresis
(CE)
combined
with
other
instruments
recent
years,
such
CE
mass
spectrometry
(CE/MS)
ultraviolet
light
detector
(CE/UV).
Journal of Separation Science,
Journal Year:
2023,
Volume and Issue:
46(15)
Published: May 26, 2023
Capillary
electrophoresis
is
recognized
as
a
valued
separation
technique
for
its
high
efficiency,
low
sample
consumption,
good
economic
and
ecological
aspects,
reproducibility,
complementarity
to
traditional
liquid
chromatography
techniques.
experiments
are
generally
performed
utilizing
optical
detection,
such
ultraviolet
or
fluorescence
detectors.
However,
in
order
provide
structural
information,
capillary
hyphenated
highly
sensitive
selective
mass
spectrometry
has
been
developed
overcome
the
limitations
of
detections.
electrophoresis‐mass
increasingly
popular
protein
analysis,
including
biopharmaceutical
biomedical
research.
It
frequently
applied
determination
physicochemical
biochemical
parameters
proteins,
offers
excellent
performance
in‐depth
characterizations
biopharmaceuticals
at
various
levels
also
already
proven
promising
tool
biomarker
discovery.
In
this
review,
we
focus
on
possibilities
analysis
their
intact
level.
Various
modes
interfaces,
well
approaches
prevent
adsorption
enhance
loading
capacity,
discussed
recent
(2018–March
2023)
developments
applications
field
summarized.
Nephrology Dialysis Transplantation,
Journal Year:
2020,
Volume and Issue:
37(1), P. 42 - 52
Published: Nov. 11, 2020
Abstract
Background
Risk
of
kidney
function
decline
in
immunoglobulin
A
(IgA)
nephropathy
(IgAN)
is
significant
and
may
not
be
predicted
by
available
clinical
histological
tools.
To
serve
this
unmet
need,
we
aimed
at
developing
a
urinary
biomarker-based
algorithm
that
predicts
rapid
disease
progression
IgAN,
thus
enabling
personalized
risk
stratification.
Methods
In
multicentre
study,
urine
samples
were
collected
209
patients
with
biopsy-proven
IgAN.
Progression
was
defined
tertiles
the
annual
change
estimated
glomerular
filtration
rate
(eGFR)
during
follow-up.
Urine
analysed
using
capillary
electrophoresis
coupled
mass
spectrometry.
The
area
under
receiver
operating
characteristic
curve
(AUC)
used
to
evaluate
prediction
models.
Results
Of
patients,
64%
male.
Mean
age
42
years,
mean
eGFR
63
mL/min/1.73
m2
median
proteinuria
1.2
g/day.
We
identified
237
peptides
showing
difference
abundance
according
tertile
change.
These
included
fragments
apolipoprotein
C-III,
alpha-1
antitrypsin,
different
collagens,
fibrinogen
alpha
beta,
titin,
haemoglobin
subunits,
sodium/potassium-transporting
ATPase
subunit
gamma,
uromodulin,
mucin-2,
fractalkine,
polymeric
Ig
receptor
insulin.
An
based
on
these
protein
(IgAN237)
showed
added
value
for
IgAN
[AUC
0.89;
95%
confidence
interval
(CI)
0.83–0.95],
as
compared
parameters
(age,
gender,
proteinuria,
arterial
pressure)
alone
(0.72;
CI
0.64–0.81).
Conclusions
peptide
classifier
progressive
loss
significantly
better
than
alone.
European Journal of Heart Failure,
Journal Year:
2021,
Volume and Issue:
23(11), P. 1875 - 1887
Published: April 22, 2021
Abstract
Aims
Heart
failure
(HF)
is
a
major
public
health
concern
worldwide.
The
diversity
of
HF
makes
it
challenging
to
decipher
the
underlying
complex
pathological
processes
using
single
biomarkers.
We
examined
association
between
urinary
peptides
and
with
reduced
(HFrEF),
mid‐range
(HFmrEF)
preserved
(HFpEF)
ejection
fraction,
defined
based
on
European
Society
Cardiology
guidelines,
links
these
peptide
biomarkers
molecular
pathophysiology.
Methods
results
Analysable
data
from
5608
participants
were
available
in
Human
Urinary
Proteome
database.
profiles
diagnosed
HFrEF,
HFmrEF,
HFpEF
controls
matched
for
sex,
age,
estimated
glomerular
filtration
rate,
systolic
diastolic
blood
pressure,
diabetes
hypertension
compared
applying
Mann–Whitney
test,
followed
by
correction
multiple
testing.
Unsupervised
learning
algorithms
applied
investigate
groups
similar
profiles.
A
total
577
significantly
associated
sequenced,
447
which
(77%)
collagen
fragments.
In
silico
analysis
suggested
that
biomarker
abnormalities
principally
reflect
changes
turnover
immune
response,
both
fibrosis.
clustering
separated
study
into
two
clusters,
83%
non‐HF
allocated
cluster
1,
while
65%
patients
2
(
P
<
0.0001).
No
separation
subtype
was
detectable.
Conclusions
failure,
irrespective
fraction
subtype,
differences
abundance
reflecting
inflammation.
These
should
be
studied
as
tools
early
detection,
prognostication,
prediction
therapeutic
response.
Electrophoresis,
Journal Year:
2021,
Volume and Issue:
43(1-2), P. 82 - 108
Published: Oct. 11, 2021
Abstract
The
review
provides
a
comprehensive
overview
of
developments
and
applications
high
performance
capillary
microchip
electroseparation
methods
(zone
electrophoresis,
isotachophoresis,
isoelectric
focusing,
affinity
electrokinetic
chromatography,
electrochromatography)
for
analysis,
microscale
isolation,
physicochemical
characterization
peptides
from
2019
up
to
approximately
the
middle
2021.
Advances
in
investigation
electromigration
properties
methodology
their
such
as
sample
preparation,
sorption
suppression,
EOF
control,
detection,
are
presented.
New
individual
CE
CEC
demonstrated
several
types
shown.
They
include
qualitative
quantitative
determination
complex
biomatrices,
monitoring
chemical
enzymatic
reactions
changes,
amino
acid,
sequence,
chiral
analyses,
peptide
mapping
proteins.
In
addition,
micropreparative
separations
significant
parameters
by
described.