médecine/sciences,
Journal Year:
2024,
Volume and Issue:
40(10), P. 757 - 765
Published: Oct. 1, 2024
Si
les
effets
délétères
des
activités
humaines
sur
la
biodiversité
du
monde
végétal
et
animal
le
climat
sont
un
fait
acquis,
leur
impact
microbienne
doit
être
urgemment
considéré,
particulièrement
microbiome
humain.
La
révolution
métagénomique
permet
une
large
analyse
suivi
spatio-temporels
jusqu’à
présent
inenvisageables.
Une
réduction
de
richesse
diversité
microbiotes
humains,
en
particulier
intestinaux,
est
maintenant
avérée,
surtout
dans
aires
industrialisées
planète.
Utilisation
inconsidérée
antibiotiques,
changements
drastiques
régimes
alimentaires
éléments
restant
à
déterminer
l’exposome
environnemental
plus
souvent
incriminés.
En
découlent
situations
dysbioses
caractérisées
par
érosion
cœur
d’espèces
microbiennes
communes
tous
individus
prolifération
pathobiontes
opportunistes,
sans
doute
due
affaiblissement
l’effet
barrière
microbiome.
Le
défi
actuel
d’établir
lien
causalité
entre
ces
maladies
émergence
épidémique,
bien
que
non
transmissibles,
comme
l’asthme,
l’allergie,
auto-immunes,
l’obésité,
diabète
certains
cancers.
Modèles
expérimentaux
études
cliniques
contrôlées
prospectives
interventionnelles
indispensables
pour
consolider
cette
causalité,
d’autant
déchiffrage
altérations
symbiose
homme-microbiome
se
profile
nouveau
chapitre
médecine
:
«
»
World Journal of Gastroenterology,
Journal Year:
2025,
Volume and Issue:
31(7)
Published: Jan. 18, 2025
Colorectal
cancer
is
the
third
most
common
malignancy
and
fourth
leading
cause
of
cancer-related
deaths
worldwide.
Several
studies
have
shown
an
association
between
gut
microbiota
colorectal
cancer.
Gut
unique
can
be
influenced
by
geographic
factors
habits.
This
study
aimed
to
determine
diversity
composition
colonic
mucosal
in
patients
with
without
To
Indonesia.
case-control
included
59
subjects
(35
24
non-colorectal
indicated
for
colonoscopy
at
Dr.
Cipto
Mangunkusumo
Gastrointestinal
Endoscopy
Center
Fatmawati
Hospital.
Microbiota
examination
was
performed
using
16S
rRNA
sequencing.
Bioinformatics
analysis
wf-metagenomics
pipeline
from
EPI2Me-Labs
(Oxford
Nanopore
Technologies
platform).
Patients
had
a
higher
median
index
value
on
Shannon
(3.28
vs
2.82,
P
>
0.05)
lower
Simpson
(0.050
0.060,
0.05).
Significant
differences
beta
were
observed
genus
(P
=
0.002)
species
levels
0.001).
Firmicutes,
Proteobacteria,
Bacteroidetes,
Fusobacteria
dominant
phyla.
The
genera
Bacteroides,
Campylobacter,
Peptostreptococcus,
Parvimonas
found
more
frequently
cancer,
while
Faecalibacterium,
Haemophilus,
Phocaeicola
relative
abundance
Fusobacterium
nucleatum,
Bacteroides
fragilis,
Enterococcus
faecalis,
Campylobacter
hominis,
faecalis
significantly
elevated
Meanwhile,
Faecalibacterium
prausnitzii,
duncaniae,
Prevotella
copri
commonly
exhibit
distinct
their
compared
those
reviewed
approved
Ethics
Committee
Faculty
Medicine,
Universitas
Indonesia
(No.
KET-1517/UN2.F1/ETIK/PPM.00.02/2023).
ACS Sensors,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Feb. 4, 2025
Colorectal
cancer
(CRC)
is
a
common
malignancy
requiring
early
screening
to
improve
patient
outcomes.
Current
methods
such
as
colonoscopy
and
fecal
occult
blood
tests
have
several
limitations
including
high
cost,
poor
specificity,
invasiveness,
inconvenience.
Recent
research
has
identified
specific
bacterial
communities
associated
with
CRC,
notably
Parvimonas
micra
(P.
micra),
which
serves
biomarker
for
diagnosis
owing
its
accumulation
in
the
malignant
tissues
feces
of
CRC
patients.
Herein,
we
employed
whole-bacterium
systematic
evolution
ligands
by
exponential
enrichment
(SELEX)
method
isolate
high-affinity
aptamers
against
P.
using
17
selection
cycles.
These
were
subsequently
bound
Au@Fe3O4
nanoparticles,
interaction
inhibited
peroxidase-like
activity
thereby
blocking
3,3',5,5'-tetramethylbenzidine
(TMB)
chromogenic
reaction
resulting
measurable
reduction
absorbance.
This
colorimetric
detection
strategy
demonstrated
linear
response
across
range
100-108
CFU/mL
limit
11
CFU/mL.
Using
aptasensor,
assessed
abundance
clinical
samples
found
significantly
higher
levels
patients
compared
that
healthy
individuals,
was
consistent
quantitative
polymerase
chain
results.
study
therefore
represents
first
successful
identification
an
aptamer
affinity
specificity
micra,
leading
development
highly
sensitive
aptasensor
detection.
The
presented
approach
significant
potential
diagnosis.
Materials Today Bio,
Journal Year:
2025,
Volume and Issue:
31, P. 101601 - 101601
Published: Feb. 20, 2025
Over
the
last
two
decades,
molecular
biology
advances
have
revealed
gut
microbiota's
active
and
crucial
role
in
colorectal
cancer
(CRC)
pathogenesis
its
dysregulation
during
tumorigenesis.
This
understanding
has
underscored
urgency
of
exploring
novel
therapeutic
approaches
to
address
challenges
posed
by
CRC.
Among
these
approaches,
nanosynergistic
therapies,
with
their
potential
modulate
microbiota,
increase
drug
bioavailability
stability,
reduce
side
effects,
emerged
as
a
promising
avenue.
Furthermore,
efficacy
nanotechnology-based
can
be
enhanced
combining
them
different
methods,
including
chemotherapy,
radiotherapy,
immunotherapy,
photothermal
therapy,
sonodynamic
therapy.
Herein,
recent
progress
nano
synergistic
therapy
been
reviewed,
focusing
on
synergy
between
microbiota
nanotechnology
CRC
treatment.
Additionally,
diverse
applications
nanoparticles
analyzed
provide
innovative
ideas
effective
solutions
for
developing
highly
treatment
strategies.
mSystems,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Feb. 27, 2025
ABSTRACT
The
incidence
of
colorectal
cancer
(CRC)
has
been
increasing
in
recent
decades.
Current
methods
for
CRC
screening
have
their
own
drawbacks,
thus
there
is
an
urgent
need
to
identify
the
key
microbes
that
drive
development
wider
application
early
detection
and
prevention
CRC.
To
address
this
issue,
we
performed
fecal
microbiome
analysis
by
high-throughput
sequencing
16S
rRNA
gene
combined
with
blood
biochemical
indicators
patients
stages
I,
II,
III,
IV,
healthy
people,
polyps.
Fecal
microbiota
was
disturbed,
as
evidenced
significantly
reduced
α-diversity
stage
IV
markedly
different
β-diversity.
random
forest
model
identified
top
25
genera
from
174
training
data,
resulting
a
diagnostic
accuracy
87.95%.
Further,
combining
differential
analysis,
screened
out
11
biomarkers
changed
groups.
Peptostreptococcus
,
Parvimonas
Shewanella
Oscillibacter
Eggerthella
Gemella
associated
were
enriched,
while
Fenollaria
Staphylococcus
Ezakiella
Finegoldia,
Neisseria
remission
suppressed
Importantly,
carcinoembryonic
antigen
(CEA)
correlated
these
microbial
biomarkers,
carbohydrate
19-9
(CA
19-9)
.
Notably,
co-occurrence
network
at
genus
level
exhibited
most
complex
stable.
These
results
suggested
CEA,
CA
may
be
co-biomarkers
disease
occurrence
development,
non-invasive
diagnosis
IMPORTANCE
Identifying
important
field.
We
delved
into
research
on
association
between
study,
providing
detailed
characteristics
during
transition
normal
intestine
polyps
cancer.
bacterial
bioRxiv (Cold Spring Harbor Laboratory),
Journal Year:
2025,
Volume and Issue:
unknown
Published: March 28, 2025
Summary
Background
Colorectal
cancer
(CRC)
results
from
the
accumulation
of
mutations
and
epigenetic
changes
in
gut
epithelial
cells
likely
due
to
microbiota
dysbiosis.
However,
limited
research
has
been
done
explore
link
between
host
tumour
dysbiosis
disease
outcome.
Methods
The
mechanisms
influencing
outcomes
97
colorectal
patients,
including
13
with
Lynch
syndrome,
20
inflammatory
bowel
(IBD),
64
sporadic
cases,
were
analyzed
using
a
multiomics
approach.
These
patients
categorized
into
two
groups:
“disease-free/stable
disease”
“progression
survival
outcomes.
analysis
included
tumor
adherent
composition
(16S
rRNA),
somatic
gene
(WES),
expression
(RNAseq),
immune
markers
(RNAscope),
infiltrate
(immunohistochemistry).
Results
IBD-CRC
had
worse
than
those
or
CRC,
regardless
TNM
staging
treatment.
Symbiotic
bacteria
like
Lactococcus
lactis
significantly
reduced
tissues.
Patient
influenced
by
abundance
virulent
(
Escherichia
coli
)
relative
beneficial
).
Although
no
significant
increase
deleterious
was
found
IBD-CRC.
16sRNA
revealed
increased
virulent-
decreased
anti-inflammatory
symbiotic-bacteria
correlating
upregulation
oncogenes
downregulation
anti-oncogenes
PHLPP1.
multiplex
situ
hybridization
CD8,
IFNγ
PHLPP1
an
anti-oncogene
decrease
detectable
tissues
as
compared
CRCs.
Conclusion
poor
are
cell
alterations,
possibly
triggered
microbiota-related
pathways.
What
You
Need
Know
BACKGROUND
AND
CONTEXT
is
associated
Inflammatory
disease-related
CRC
(IBD-CRC)
classified
environment-related
condition.
NEW
FINDINGS
In
relation
patient
outcomes,
three
types
(Sporadic-,
IBD-,
syndrome-CRC)
multiomic
This
examining
tissue
bacteria,
analyses,
quantifying
infiltration
mucosa.
worst
down
regulation
gene,
virulent/symbiotic
imbalance,
response
failure.
LIMITATIONS
Lack
animal
experiments
FMT
fresh
stool
patients.
CLINICAL
TRANSLATIONAL
RESEARCH
RELEVANCE
Among
different
showed
greater
imbalance
harmful
along
Lay
summary
study
compares
pathological
clinical
characteristics
across
distinct
etiologies:
(IBD)-associated
syndrome-associated
(LS-CRC).
Distinct
differences
tumor-adherent
microbiota,
profiles
observed.
Notably,
demonstrated
poorest
prognosis
depending
on
microbe-host
interaction
highlighting
potential
biomarkers
for
treatment
strategies.