The virulence factor LLO of Listeria monocytogenes can slow down biofilm formation and indirectly suppress phage lytic effect
Banhong Liu,
No information about this author
Mei Bai,
No information about this author
Weichao Tu
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et al.
Research Square (Research Square),
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 13, 2025
Abstract
Phage-based
biocontrols
are
among
the
various
tools
available
to
control
Listeria
monocytogenes
(Lm)
in
food
and
processing
environments.
However,
effectiveness
of
phages
against
different
Lm
strains
varies
significantly.
Prior
research
has
demonstrated
that
inactivation
virulence
Listeriolysin
O
(LLO)
leads
a
loss
hemolytic
activity
reduction
overall
virulence.
In
this
study,
we
generated
hly
gene-defective
strain,
NJ05-Δhly,
which
significant
enhancement
motility
despite
absence
activity.
Furthermore,
NJ05-Δhly
displayed
diminished
capacity
for
biofilm
formation,
negatively
correlated
with
glucose
concentration.
The
efficiency
plating
(EOP)
defective
strain
decreased
by
approximately
100-fold
following
infection
Listeria
phage
vB-LmoM-NJ05,
notable
lytic
effect
observed
at
multiplicities
(MOI)
1
or
10.
With
10
8
PFU/mL
treatment,
was
completely
suppressed
removed.
Moreover,
treatment
effectively
adhesion
invasion,
as
well
mitochondrial
membrane
damage,
addition
accumulation
reactive
oxygen
species
(ROS),
even
LLO.
Transcriptome
analysis
indicated
LLO
is
mainly
associated
pathways
involved
quorum
sensing,
purine
metabolism,
peptidoglycan
biosynthesis,
others.
Notably,
genes
related
sensitivity,
pathogenicity,
were
significantly
down-regulated.
These
findings
suggest
plays
crucial
role
regulating
susceptibility,
formation.
This
study
provides
evidence
complex
interplay
between
interactions
during
infection.
Language: Английский
Impact of Cinnamaldehyde Nanoemulsion on Listeria monocytogenes Biofilms on Broth-Treated Food Contact Surfaces
Huayan Cheng,
No information about this author
Qiujin Zhu,
No information about this author
Jing Wan
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et al.
LWT,
Journal Year:
2025,
Volume and Issue:
218, P. 117500 - 117500
Published: Feb. 1, 2025
Language: Английский
Resistant and Emergent Pathogens in Food Products
Elsevier eBooks,
Journal Year:
2025,
Volume and Issue:
unknown, P. 15 - 40
Published: Jan. 1, 2025
Language: Английский
Anti-Bacterial and Anti-Biofilm Activities of Essential Oil from Citrus reticulata Blanco cv. Tankan Peel Against Listeria monocytogenes
Jinming Peng,
No information about this author
Guangwei Chen,
No information about this author
Shaoxin Guo
No information about this author
et al.
Foods,
Journal Year:
2024,
Volume and Issue:
13(23), P. 3841 - 3841
Published: Nov. 28, 2024
In
recent
years,
plant
essential
oils
have
been
confirmed
as
natural
inhibitors
of
foodborne
pathogens.
Citrus
reticulata
Blanco
cv.
Tankan
peel
oil
(CPEO)
showed
anti-Listeria
monocytogenes
(LM)
activities,
and
this
study
investigated
the
associated
mechanisms
by
using
high-resolution
electron
microscope,
fluorescence
spectrometer,
flow
cytometer,
potentiometer,
transcriptome
sequencing.
The
results
that
CPEO
restrained
LM
growth
at
a
minimum
inhibitory
concentration
2%
(v/v).
anti-LM
abilities
were
achieved
disrupting
permeability
cell
wall,
damaging
permeability,
fluidity,
integrity
membrane,
disturbing
membrane
hydrophobic
core,
destroying
protein
conformation.
Moreover,
could
significantly
inhibit
aggregation
from
forming
biofilm
reducing
extracellular
polymeric
substances’
(protein,
polysaccharide,
eDNA)
production
bacterial
surface
charge
numbers.
RNA
sequencing
data
indicated
genes
involved
in
wall
biosynthesis,
DNA
replication
repair,
quorum
sensing
two-component
systems
expressed
differently
after
treatment.
These
suggested
be
used
novel
agent
green
preservative
food
sector.
Further
studies
are
needed
to
verify
activities
real
food.
Language: Английский
Mapping the Landscape of Listeriosis Outbreaks (1998-2023): Trends, Challenges, and Regulatory Responses in the United States
Yuan Su,
No information about this author
Andy Liu,
No information about this author
Meijun Zhu
No information about this author
et al.
Trends in Food Science & Technology,
Journal Year:
2024,
Volume and Issue:
unknown, P. 104750 - 104750
Published: Oct. 1, 2024
Language: Английский
Antimicrobial nanoparticle-containing food packaging films for controlling Listeria spp.: An overview
International Journal of Food Microbiology,
Journal Year:
2024,
Volume and Issue:
427, P. 110959 - 110959
Published: Nov. 1, 2024
Language: Английский
Enhanced steam-sanitizer strategies for eliminating Listeria biofilms on food-contact surfaces
Zi Hua,
No information about this author
Frank Younce,
No information about this author
Barbara Rasco
No information about this author
et al.
Food Control,
Journal Year:
2024,
Volume and Issue:
unknown, P. 111020 - 111020
Published: Nov. 1, 2024
Language: Английский
Recent advances in examining the factors influencing the efficacy of biocides against Listeria monocytogenes biofilms in the food industry: A systematic review
Comprehensive Reviews in Food Science and Food Safety,
Journal Year:
2024,
Volume and Issue:
24(1)
Published: Dec. 30, 2024
Controlling
Listeria
monocytogenes
and
its
associated
biofilms
in
the
food
industry
requires
various
disinfection
techniques,
including
physical,
chemical,
biological
treatments.
Biocides,
owing
to
their
ease
of
use,
cost-effectiveness,
dissolvability
water,
efficacy
against
a
wide
range
microorganisms,
are
frequently
selected
options.
Nonetheless,
concerns
have
been
raised
about
controlling
L.
biofilm,
as
laboratory-based
commercial
studies
reported
persistence
this
bacterium
after
cleaning
disinfection.
This
review
systematically
examined
scientific
studies,
sourced
from
Web
Science,
Scopus,
PubMed
databases
between
January
2010
May
2024,
that
investigated
effectiveness
most
commonly
used
biocides
biofilms.
A
total
92
articles
which
met
screening
criteria,
were
included,
with
utilizing
containing
sodium
hypochlorite,
quaternary
ammonium
compounds,
peroxyacetic
acid
being
predominant.
Studies
indicated
several
key
factors
may
potentially
influence
biocides'
These
included
strain
type
(persistent,
sporadic),
serotype,
origin
(clinical,
environmental,
or
food),
surface
(biotic
abiotic),
material
(stainless
steel,
polystyrene,
etc.),
incubation
time
(biofilm
age)
temperature,
presence
organic
matter,
biocide's
active
agent,
co-culture
other
bacteria.
The
induction
viable
but
nonculturable
(VBNC)
state
following
is
also
critical
concern.
aims
provide
global
understanding
how
respond
under
different
treatment
conditions,
facilitating
development
effective
strategies
industry.
Language: Английский