Cooperative Mechanisms of LexA and HtpG in the Regulation of Virulence Gene Expression in Pseudomonas plecoglossicida
Rongchao He,
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Yanfei Zuo,
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Qiu Li
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et al.
Current Research in Microbial Sciences,
Journal Year:
2025,
Volume and Issue:
8, P. 100351 - 100351
Published: Jan. 1, 2025
Language: Английский
Gut-bacteria derived membrane vesicles and host metabolic health: a narrative review
Gut Microbes,
Journal Year:
2024,
Volume and Issue:
16(1)
Published: May 29, 2024
The
intestinal
microbiota,
consisting
of
an
estimated
10^10-10^11
organisms,
regulate
physiological
processes
involved
in
digestion,
metabolism,
and
immunity.
Surprisingly,
these
microorganisms
have
been
found
to
influence
tissues
that
are
not
directly
contact
with
the
gut,
such
as
adipose
tissue,
liver,
skeletal
muscle,
brain.
This
interaction
takes
place
even
when
barrier
function
is
uncompromised.
An
increasing
body
evidence
suggests
bacterial
membrane
vesicles
(bMVs),
addition
metabolites
short-chain
fatty
acids,
able
mediate
effects
microbiota
on
host
tissues.
ability
bMVs
dissipate
from
lumen
into
systemic
circulation
hereby
facilitates
transport
presentation
components
organs.
Importantly,
there
indications
between
or
immune
cells
may
play
a
role
etiology
(chronic
metabolic)
disease.
For
example,
gut-derived
bMV-mediated
induction
insulin
resistance
muscle
pro-inflammatory
signaling
by
adipocytes
possibly
underlies
diseases
type
2
diabetes
obesity.
Here,
we
review
current
knowledge
microbiota's
energy/substrate
metabolism
focus
etiological
roles
onset
progression
metabolic
We
furthermore
illustrate
vesicle
production
could
potentially
be
modulated
through
lifestyle
intervention
improve
metabolism.
Language: Английский
Innovative Strategies in Oncology: Bacterial Membrane Vesicle-Based Drug Delivery Systems for Cancer Diagnosis and Therapy
Pharmaceutics,
Journal Year:
2025,
Volume and Issue:
17(1), P. 58 - 58
Published: Jan. 3, 2025
Outer
membrane
vesicles
(OMVs)
are
double-layered
structures
of
nanoscale
lipids
released
by
gram-negative
bacteria.
They
have
the
same
composition
and
characteristics
as
primitive
cells,
which
enables
them
to
penetrate
cells
tissues
efficiently.
These
OMVs
exhibit
excellent
stability,
immunogenicity,
safety,
permeability
(which
makes
it
easier
for
into
tumour
tissue),
making
suitable
developing
cancer
vaccines
drug
delivery
systems.
Recent
studies
focused
on
engineering
enhance
tumour-targeting
capabilities,
reduce
toxicity,
extend
circulation
time
in
vivo.
This
article
reviews
latest
progress
OMV
treatment
discusses
challenges
associated
with
use
OMV-based
antitumour
therapy
clinical
practice.
Language: Английский
Mastitis-related Staphylococcus aureus-derived extracellular vesicles induce a pro-inflammatory response in bovine monocyte-derived macrophages
Scientific Reports,
Journal Year:
2025,
Volume and Issue:
15(1)
Published: Feb. 19, 2025
Abstract
Staphylococcus
aureus
(
S.
)
is
one
of
the
most
common
causative
agents
mammary
gland
infection
and
mastitis,
but
specific
role
-derived
extracellular
vesicles
(SaEVs)
in
mastitis
has
been
poorly
studied
to
date.
Here,
we
aimed
investigate
response
bovine
monocyte-derived
macrophages
(boMdM)
SaEVs
genotype
B
(GTB)
mastitis-related
strain
M5512B.
Specifically,
evaluated
effects
on
actin
cytoskeleton,
gene
expression,
SaEV
proteomic
cargo.
Furthermore,
assessed
what
extent
cellular
molecular
boMdM
differed
from
peripheral
mononuclear
blood
cells
(PBMCs)
used
for
vitro
derivation
former.
We
observed
that
induced
morphological
changes
boMdM,
leading
a
pro-inflammatory
pyroptosis-related
increased
expression.
Additionally,
our
study
revealed
PBMCs
exhibited
stimulus-specific
differing
responses.
The
analysis
identified
clusters
proteins
related
virulence
antibiotic
resistance,
supporting
theory
might
use
EVs
evade
host
defences
colonize
gland.
Our
results
bring
new
insights
into
how
impact
during
an
infection,
which
can
be
useful
future
vaccine
development.
Language: Английский
Host-dependent alteration of the gut microbiota: the role of luminal microRNAs
Céline Cuinat,
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Jianlin Pan,
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Elena M. Comelli
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et al.
Microbiome Research Reports,
Journal Year:
2025,
Volume and Issue:
4(1)
Published: Feb. 21, 2025
MicroRNAs
(miRNAs)
are
short,
non-coding
RNAs
that
play
gene
expression
regulatory
roles
in
eukaryotes.
MiRNAs
also
released
body
fluids,
and
the
intestine,
they
found
lumen
feces.
Here,
together
with
exogenous
dietary-derived
miRNAs,
constitute
fecal
miRNome.
Several
miRNAs
were
identified
feces
of
healthy
adults,
including,
as
shown
here,
core
hsa-miR-21-5p
hsa-miR-1246.
These
important
for
intestinal
homeostasis.
Recent
evidence
suggests
may
interact
gut
bacteria.
This
represents
a
new
avenue
to
understand
host-bacteria
crosstalk
its
role
health
disease.
review
provides
comprehensive
overview
current
knowledge
on
their
representation
across
individuals,
effects
microbiota.
It
discusses
existing
potential
mechanisms
uptake
interaction
bacterial
genomes,
drawing
from
prokaryotic
small
(sRNAs)
regulation
expression.
Finally,
we
silico
experimental
approaches
profiling
miRNA-mRNA
interactions
species,
highlighting
challenges
target
validation.
work
emphasizes
need
further
research
into
host
miRNA-bacterial
better
ecosystem
support
exploitation
disease
prevention
treatment.
Language: Английский
Outer membrane vesicles in gram-negative bacteria and its correlation with pathogenesis
F Abolhasani,
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Nasim Vaghefinanekaran,
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Aref Yarahmadi
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et al.
Frontiers in Immunology,
Journal Year:
2025,
Volume and Issue:
16
Published: April 1, 2025
There
is
a
widespread
distribution
of
gram-negative
bacteria
worldwide,
which
are
responsible
for
the
deaths
numerous
patients
each
year.
The
illnesses
they
cause
can
be
localized
and
systemic,
these
possess
several
key
virulence
factors
that
contribute
to
their
pathogenicity.
In
recent
years,
distinct
mechanisms
pathogenesis
have
evolved
remain
largely
unknown
scientists
medical
experts.
Among
these,
outer
membrane
vesicles
(OMVs)
undoubtedly
one
most
significant
influencing
virulence.
OMVs
contain
various
bacterial
compounds
diverse
effects
on
host
organisms
immune
system,
potentially
exacerbating
disease
inflammation
while
evading
responses.
This
review
comprehensively
examines
role
in
pathogenesis,
interaction
with
cells,
potential
biomedical
applications.
Understanding
molecular
governing
OMV
biogenesis
function
could
pave
way
novel
antimicrobial
strategies
therapeutic
interventions.
Language: Английский
Algicidal bacteria-derived membrane vesicles as shuttles mediating cross-kingdom interactions between bacteria and algae
Science Advances,
Journal Year:
2024,
Volume and Issue:
10(32)
Published: Aug. 7, 2024
Bacterial
membrane
vesicles
(BMVs)
are
crucial
biological
vehicles
for
facilitating
interspecies
and
interkingdom
interactions.
However,
the
extent
mechanisms
of
BMV
involvement
in
bacterial-algal
communication
remain
elusive.
This
study
provides
evidence
BMVs
delivering
cargos
to
targeted
microalgae.
Membrane
(MVs)
from
Chitinimonas
prasina
LY03
demonstrated
an
algicidal
profile
similar
strain
LY03.
Further
investigation
revealed
Tambjamine
LY2,
effective
compound,
selectively
packaged
into
LY03-MVs.
Microscopic
imaging
efficient
delivery
LY2
microalgae
Heterosigma
akashiwo
Thalassiosira
pseudonana
through
fusion.
In
addition,
versatile
cargo
capabilities
algae,
including
transfer
MV-carried
nucleic
acids
algal
cells
revival
growth
iron-depleted
by
MVs.
Collectively,
our
findings
reveal
a
previously
unknown
mechanism
which
bacteria
store
hydrophobic
compounds
MVs
trigger
target
death
highlight
potency
understanding
engineering
bacterial-algae
cross-talk.
Language: Английский
Contact-Mediated Algicidal Mechanism of Vibrio coralliirubri ACE001 Against the Harmful Alga Karenia mikimotoi
Jiaying Yu,
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Wei Xu,
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Jiaxin Wang
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et al.
iScience,
Journal Year:
2024,
Volume and Issue:
27(11), P. 111254 - 111254
Published: Oct. 30, 2024
Language: Английский
Mucosal Exosome Proteomics of Hybrid Grouper Epinephelus fuscoguttatus♀ × E. lanceolatus♂ Infected by Pseudomonas plecoglossicida
Animals,
Journal Year:
2024,
Volume and Issue:
14(23), P. 3401 - 3401
Published: Nov. 25, 2024
Pseudomonas
plecoglossicida
infection,
which
causes
visceral
white
spot
disease,
is
a
significant
and
economically
devastating
disease
in
aquaculture.
In
this
study,
we
investigated
the
impact
of
bacterial
infection
on
protein
composition
exosomes
derived
from
surface
mucus
hybrid
grouper
Epinephelus
fuscoguttatus♀
×
E.
lanceolatus♂.
Two
hundred
healthy
fish
were
randomly
separated
into
challenge
control
groups.
Fish
group
received
103
CFU/g
pathogen
P.
via
intraperitoneal
injection,
while
sterile
PBS
was
used
as
negative
control.
After
collected
extracted
for
proteomic
analysis.
The
results
analysis
revealed
that
significantly
increased
levels
innate
immune
proteins,
including
lysosomal
peroxisomal
within
exosomes.
Furthermore,
CAD
found
to
play
pivotal
role
interaction
networks
involved
response
infection.
Intriguingly,
also
observed
increase
metal-binding
proteins
exosomes,
providing
important
evidence
nutritional
immunity
surfaces
hosts.
Notably,
several
such
plasma
kallikrein,
Annexin
A5,
eukaryotic
translation
initiation
factor
3
subunit
M,
S-methyl-5-thioadenosine
phosphorylase,
exhibited
remarkable
abundance
after
These
show
promising
potential
noninvasive
biomarkers
diagnosis
disease.
study
contributes
understanding
host
may
aid
policymakers
implementing
appropriate
intervention
measures
effective
risk
management
Language: Английский