Screening DNA Damage in the Rat Kidney and Liver by Untargeted DNA Adductomics
Nagarjunachary Ragi,
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Scott J. Walmsley,
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Foster C. Jacobs
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et al.
Chemical Research in Toxicology,
Journal Year:
2024,
Volume and Issue:
37(2), P. 340 - 360
Published: Jan. 9, 2024
Air
pollution,
tobacco
smoke,
and
red
meat
are
associated
with
renal
cell
cancer
(RCC)
risk
in
the
United
States
Western
Europe;
however,
chemicals
that
form
DNA
adducts
initiate
RCC
mainly
unknown.
Aristolochia
herbaceous
plants
used
for
medicinal
purposes
Asia
worldwide.
They
a
significant
factor
upper
tract
urothelial
carcinoma
(UTUC)
to
lesser
extent.
The
aristolochic
acid
(AA)
8-methoxy-6-nitrophenanthro-[3,4-d]-1,3-dioxolo-5-carboxylic
(AA-I),
component
of
herbs,
contributes
UTUC
Asian
cohorts
Croatia,
where
AA-I
exposure
occurs
from
ingesting
contaminated
wheat
flour.
adduct
AA-I,
7-(2′-deoxyadenosin-N6-yl)-aristolactam
I,
is
often
detected
patients
UTUC,
its
characteristic
A:T-to-T:A
mutational
signature
oncogenes
tumor
suppressor
genes
AA-associated
UTUC.
Identifying
parenchyma
pelvis
caused
by
other
crucial
gaining
insights
into
unknown
etiologies.
We
employed
untargeted
screening
wide-selected
ion
monitoring
tandem
mass
spectrometry
(wide-SIM/MS2)
nanoflow
liquid
chromatography/Orbitrap
detect
formed
rat
kidneys
liver
mixture
13
environmental,
tobacco,
dietary
carcinogens
may
contribute
RCC.
Twenty
were
detected.
3-nitrobenzanthrone
(3-NBA),
an
atmospheric
pollutant,
most
abundant.
nitrophenanthrene
moieties
3-NBA
undergo
reduction
their
N-hydroxy
intermediates
2′-deoxyguanosine
(dG)
2′-deoxyadenosine
(dA)
adducts.
also
discovered
2′-deoxycytidine
dA
dG
10-methoxy-6-nitro-phenanthro-[3,4-d]-1,3-dioxolo-5-carboxylic
(AA-III),
isomer
minor
herbal
extract
assayed,
signifying
AA-III
potent
kidney
DNA-damaging
agent.
roles
AA-III,
nitrophenanthrenes,
nitroarenes
damage
human
warrant
further
study.
Wide-SIM/MS2
powerful
scanning
technology
discovery
etiology
characterization.
Language: Английский
DNA Modifications: Biomarkers for the Exposome?
Carolina Möller,
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Jazmine Virzi,
No information about this author
Yuan-Jhe Chang
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et al.
Environmental Toxicology and Pharmacology,
Journal Year:
2024,
Volume and Issue:
108, P. 104449 - 104449
Published: April 16, 2024
Language: Английский
Investigating the origins of the mutational signatures in cancer
Nucleic Acids Research,
Journal Year:
2025,
Volume and Issue:
53(1)
Published: Jan. 7, 2025
Abstract
Most
of
the
risk
factors
associated
with
chronic
and
complex
diseases,
such
as
cancer,
stem
from
exogenous
endogenous
exposures
experienced
throughout
an
individual’s
life,
collectively
known
exposome.
These
can
modify
DNA,
which
subsequently
lead
to
somatic
mutations
found
in
all
normal
tumor
tissues.
Understanding
precise
origins
specific
has
been
challenging
due
multitude
DNA
adducts
(i.e.
adductome)
their
diverse
positions
within
genome.
Thus
far,
this
limitation
prevented
researchers
precisely
linking
subsequent
mutational
outcomes.
Indeed,
many
common
observed
human
cancers
appear
originate
error-prone
processes.
Consequently,
it
remains
unclear
whether
these
result
exposure-induced
adducts,
or
arise
indirectly
processes
are
a
combination
both.
In
review,
we
summarize
approaches
that
aim
bridge
our
understanding
mechanism
by
exposure
leads
damage
then
mutation
highlight
some
remaining
challenges
shortcomings
fully
supporting
paradigm.
We
emphasize
need
integrate
cellular
adductomics,
long
read-based
mapping,
single-molecule
duplex
sequencing
native
molecules
advanced
computational
analysis.
This
proposed
holistic
approach
aims
unveil
causal
connections
between
key
modifications
landscape,
they
external
exposures,
internal
both,
thereby
addressing
questions
cancer
biology.
Language: Английский
Advances in the mechanistic understanding, biological consequences, and measurement of DNA adducts induced by tobacco smoke and e-cigarette aerosol: A review
Xinyun Zhang,
No information about this author
Jiapeng Leng,
No information about this author
Ling Lv
No information about this author
et al.
International Journal of Biological Macromolecules,
Journal Year:
2025,
Volume and Issue:
306, P. 141574 - 141574
Published: Feb. 27, 2025
Language: Английский
Development of an untargeted DNA adductomics method by ultra-high performance liquid chromatography coupled to high-resolution mass spectrometry
Talanta,
Journal Year:
2024,
Volume and Issue:
282, P. 126985 - 126985
Published: Oct. 5, 2024
Language: Английский
DNA Adductomics: A Narrative Review of Its Development, Applications, and Future
Biomolecules,
Journal Year:
2024,
Volume and Issue:
14(9), P. 1173 - 1173
Published: Sept. 19, 2024
DNA
adductomics
is
the
global
study
of
all
adducts
and
was
first
proposed
in
2006
by
Matsuda
group.
Its
development
has
been
greatly
credited
to
advances
mass
spectrometric
techniques,
particularly
tandem
multiple-stage
spectrometry.
In
fact,
liquid
chromatography-mass
spectrometry
(LC-MS)-based
methods
are
virtually
sole
technique
with
practicality
for
adductomic
studies
date.
At
present,
primarily
used
as
a
tool
search
adducts,
known
unknown,
providing
evidence
exposure
exogenous
genotoxins
and/or
molecular
mechanisms
their
genotoxicity.
Some
discovered
this
way
have
potential
predict
cancer
risks
be
associated
adverse
health
outcomes.
successfully
identify
determine
carcinogens
that
may
contribute
etiology
certain
cancers,
including
bacterial
an
N-nitrosamine.
Also
using
approach,
multiple
observed
show
age
dependence
serve
aging
biomarkers.
These
achievements
highlight
capability
power
medicine,
biological
science,
environmental
science.
Nonetheless,
still
its
infancy,
great
expected
future.
Language: Английский
Development of an untargeted DNA adductomics method by ultra-high performance liquid chromatography coupled to high-resolution mass spectrometry
Published: April 29, 2024
Background:
Genotoxicants
originating
from
inflammation,
diet,
and
environment
can
covalently
modify
DNA,
possibly
initiating
the
process
of
carcinogenesis.
DNA
adducts
have
been
known
for
long,
but
old
methods
allowed
to
target
only
a
few
at
time,
not
providing
global
picture
“DNA
adductome”.
adductomics
is
new
research
field,
aiming
screen
unknown
by
high
resolution
mass
spectrometry
(HRMS).
However,
presents
several
analytical
challenges
such
as
need
sensitivity
development
effective
screening
approaches
identify
novel
adducts.
Results:
In
this
work,
sensitive
untargeted
method
was
developed
using
ultra-high
performance
liquid
chromatography
(UHPLC)
coupled
via
an
ESI
source
quadrupole-time
flight
spectrometric
instrumentation.
Mobile
phases
with
ammonium
bicarbonate
gave
best
signal
enhancement.
The
MS
capillary
voltage,
cone
detector
voltage
had
most
effect
on
response
A
low
adsorption
vial
selected
reducing
analyte
loss.
Hybrid
surface-coated
columns
were
tested
optimized
applied
analyse
in
calf
thymus,
cat
colon,
human
colon
performing
MSE
acquisition
(all-ion
fragmentation
acquisition)
loss
deoxyribose
nucleobase
fragment
ions.
Fifty-four
tentatively
identified,
hereof
38
never
reported
before.
Significance:
This
first
study
tissue,
one
studies
literature
reporting
identification
number
unknowns.
demonstrates
promising
results
application
future
investigating
potential
cancer-causing
factors.
Language: Английский
Multi-adductomics: Advancing mass spectrometry techniques for comprehensive exposome characterization
TrAC Trends in Analytical Chemistry,
Journal Year:
2024,
Volume and Issue:
180, P. 117900 - 117900
Published: Aug. 5, 2024
Language: Английский
Pivotal Role of Mass Spectrometry for the Assessment of Exposure to Reactive Chemical Contaminants: From the Exposome to the Adductome
Mass Spectrometry Reviews,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Dec. 2, 2024
ABSTRACT
A
large
part
of
the
Human
chemical
exposome
is
now
well
characterized,
and
its
health
effects
has
been
widely
documented,
although
precise
causal
links
remain
difficult
to
establish.
In
parallel,
genetic
factors
only
were
shown
contribute
less
than
30%
various
pathologies.
Therefore,
environmental
may
represent
predominant
cause
chronic
diseases.
Mass
Spectrometry
established
for
many
years
as
a
main
“gold
standard”
in
this
field
due
performances
both
sensitivity
selectivity.
However,
some
unstable
or
highly
reactive
compounds
escape
their
detection
biological
samples
because
short
half‐life
stable
metabolites,
if
any,
can
be
used
exposure
assessment.
These
electrophilic
molecules
are
known
bind
covalently
nucleophilic
body
form
what
commonly
called
adducts.
The
study
adducts
formed
with
DNA,
proteins
glutathione,
nowadays
adductomics,
provide
additional
toxicologically
relevant
information
biomonitoring
studies.
This
review
describes
particular
related
mass
spectrometric
methods
developed
therein.
Three
dedicated
parts
devoted
contribution
spectrometry
respectively
assessment
DNA
modifications,
protein
reaction
glutathione.
Language: Английский