Biomedicines,
Год журнала:
2024,
Номер
12(12), С. 2759 - 2759
Опубликована: Дек. 3, 2024
Background/Objectives:
Stress
protein
HSP70
administered
exogenously
has
demonstrated
high
potential
as
an
efficient
adjuvant
in
antitumor
immune
response.
To
enhance
the
antigen-presenting
activity,
bioavailability,
and
stability
of
exogenous
recombinant
human
HSP70,
we
propose
incorporating
it
into
plant
extracellular
vesicles.
Earlier,
found
that
grapefruit-derived
vesicles
(GEV)
were
able
to
store
with
no
loss
its
major
function,
chaperone
activity.
Methods:
In
this
study,
tested
whether
loaded
GEV
(GEV-HSP70)
could
elicit
response
cellular
animal
models
colorectal
cancer.
Results:
test
hypothesis
vitro,
mouse
cancer
cell
lines
used.
We
have
shown
addition
either
free
form
or
part
GEVs,
increases
sensitivity
(HCT-116,
DLD1)
(CT-26)
colon
cells
cytotoxic
lymphocytes
NK-92
cells.
Moreover,
amount
GEV-HSP70
required
cause
same
activation
immunity
was
20
times
less
than
when
added
form.
a
carcinoma
model
vivo,
inoculated
subcutaneously
BALB/c
mice
together
CT-26
tumor
node.
As
compared
control
groups,
observed
increase
lifespan
animals
decrease
size,
well
level
TGFB1
IL-10
factors
blood
plasma.
vitro
analysis
immunomodulatory
activity
showed
GEV-HSP70-treated
associated
accumulation
CD8+
Conclusions:
These
results
demonstrate
feasibility
efficacy
new
technique
based
on
encapsulated
specific
tumors.
Frontiers in Immunology,
Год журнала:
2024,
Номер
15
Опубликована: Окт. 21, 2024
In
recent
years,
cancer,
especially
primary
liver
cancer
(including
hepatocellular
carcinoma
and
intrahepatic
cholangiocarcinoma),
has
posed
a
serious
threat
to
human
health.
the
field
of
exosomes
play
an
important
role
in
initiation,
metastasis
interaction
with
tumor
microenvironment.
Exosomes
are
class
nanoscale
extracellular
vesicles
(EVs)secreted
by
most
cells
rich
bioactive
molecules,
including
RNA,
proteins
lipids,
that
mediate
intercellular
communication
during
physiological
pathological
processes.
This
review
reviews
multiple
roles
progression,
as
well
their
effects
on
angiogenesis,
epithelial-mesenchymal
transformation
(EMT),
immune
evasion,
drug
resistance.
have
great
potential
biomarkers
for
diagnosis
prognosis
because
they
carry
specific
molecular
markers
facilitate
early
detection
evaluation
treatment
outcomes.
addition,
exosomes,
new
type
delivery
vector,
unique
advantages
targeted
therapy
provide
strategy
cancer.
The
challenges
prospects
exosome-based
immunotherapy
were
also
discussed.
However,
such
standardization
isolation
techniques
scalability
therapeutic
applications
remain
significant
hurdles.
bioRxiv (Cold Spring Harbor Laboratory),
Год журнала:
2024,
Номер
unknown
Опубликована: Дек. 2, 2024
Abstract
Heat
shock
protein
A1A
(HSPA1A)
is
a
molecular
chaperone
crucial
in
cell
survival.
In
addition
to
its
cytosolic
functions,
HSPA1A
translocates
heat-shocked
and
cancer
cells’
plasma
membrane
(PM).
cancer,
PM-localized
(mHSPA1A)
associated
with
increased
tumor
aggressiveness
therapeutic
resistance,
suggesting
that
preventing
localization
could
have
value.
This
translocation
depends
on
HSPA1A’s
interaction
PM
phospholipids,
including
phosphatidylserine
(PS).
Although
PS
binding
regulates
localization,
the
exact
trigger
for
this
movement
remains
unclear.
Given
lipid
modifications
are
hallmark,
we
hypothesized
driving
heat-induced
changes
levels
response
heat
stress.
We
tested
hypothesis
using
pharmacological
inhibition
RNA
interference
(RNAi)
targeting
synthesis,
combined
confocal
microscopy,
lipidomics,
western
blotting.
Lipidomic
analysis
PS-specific
biosensors
confirmed
shock-induced
increase,
peaking
immediately
post-stress.
Inhibition
of
synthesis
fendiline
RNAi
significantly
reduced
while
depletion
cholesterol
or
fatty
acids
had
minimal
effects,
confirming
specificity
PS.
Further
experiments
showed
saturation
elongation
did
not
impact
indicating
total
rather
than
specific
species,
critical
factor.
These
findings
reshape
current
models
trafficking,
demonstrating
regulator
during
response.
work
offers
new
insights
into
lipid-regulated
trafficking
highlights
importance
controlling
cellular
responses
IntechOpen eBooks,
Год журнала:
2025,
Номер
unknown
Опубликована: Март 25, 2025
HSP70
is
a
molecular
chaperone
that
plays
critical
role
in
normal
physiology
of
the
cell
and
highly
activated
under
pathological
conditions
such
as
cancer.
It
has
been
well
established
implicated
breast
cancer
development
progression.
Highly
linked
to
processes,
proliferation,
metastasis,
drug
resistance,
driving
anti-apoptotic
pathways.
In
Luminal
A
subtype,
stabilizes
ESR1
(estrogen
receptor
1)
PIK3CA
(phosphatidylinositol-4,5-bisphosphate
3-kinase
catalytic
subunit
alpha)
pathways,
supporting
survival,
while
B
its
interaction
with
Cyclin
D1
TP53
contributes
treatment
resistance.
HER2
(+)
triggers
aggressive
tumor
growth
by
increasing
human
epidermal
factor
2
(HER2)
signaling
via
stabilizing
protein.
triple-negative
(TNBC),
it
supports
stem
cell-like
properties
interacting
neurogenic
locus
notch
homolog
protein
1
(NOTCH1)
nuclear
factor-kappa
(NF-κB)
suppressing
The
effect
on
cells
(CSCs)
an
important
limiting
therapeutic
response
initiating
potential
metastasis.
turn,
inhibits
apoptosis,
preventing
death
through
B-cell
lymphoma
(BCL-2)
stabilization
suppression
caspase
activity.
This
review
aims
provide
integrative
view
biology
addressing
functions
subtypes,
interactions
apoptosis.
Cancers,
Год журнала:
2024,
Номер
16(12), С. 2239 - 2239
Опубликована: Июнь 17, 2024
Mortalin,
a
member
of
the
Hsp70
family
proteins,
is
commonly
enriched
in
many
types
cancers.
It
promotes
carcinogenesis
and
metastasis
multiple
ways
which
inactivation
tumor
suppressor
activity
p53
has
been
firmly
established.
The
downregulation
mortalin
and/or
disruption
mortalin–p53
interactions
by
small
molecules
earlier
shown
to
activate
function
yielding
growth
arrest/apoptosis
cancer
cells.
Mortaparibs
(Mortaparib,
MortaparibPlus,
MortaparibMild)
are
chemical
inhibitors
isolated
cell-based
two-way
screening
involving
(i)
shift
staining
pattern
from
perinuclear
(characteristics
cells)
pancytoplasmic
normal
(ii)
nuclear
enrichment
p53.
They
have
similar
structures
also
cause
inhibition
PARP1
hence
were
named
Mortaparibs.
In
present
study,
we
report
anticancer
anti-metastasis
MortaparibMild
(4-[(4-amino-5-thiophen-2-yl-1,2,4-triazol-3-yl)sulfanylmethyl]-N-(4-methoxyphenyl)-1,3-thiazol-2-amine)
p53-null
By
extensive
molecular
analyses
cell
proliferation,
arrest,
apoptosis
pathways,
demonstrate
that
although
it
causes
relatively
weaker
cytotoxicity
compared
Mortaparib
its
lower
concentrations
equally
potent
inhibit
migration.
We
developed
combinations
(called
MortaparibMix-AP,
MortaparibMix-AM,
MortaparibMix-AS)
consisting
different
ratios
three
for
specifically
enhancing
their
anti-proliferation,
anti-migration,
antistress
activities,
respectively.
Based
on
control
treated
cells,
suggest
mixtures
may
be
considered
further
laboratory
clinical
studies
validating
use
treatment
as
well
prevention
relapse
metastasis.
Langmuir,
Год журнала:
2024,
Номер
40(42), С. 22177 - 22189
Опубликована: Окт. 10, 2024
Extracellular
vesicles
(EVs)
are
cell-derived
membrane-bound
particles
with
molecular
cargo
reflective
of
their
cell
origin.
Analysis
disease-related
EVs
and
associated
from
biofluids
is
a
promising
tool
for
disease
management.
To
facilitate
the
analysis
intravesicular
molecules,
EV
lysis
needed.
Moreover,
highly
sensitive
multiplexed
detection
methods
required
to
achieve
early
diagnostics.
While
approaches
have
been
well
studied,
effects
on
downstream
lacking.
In
this
work,
we
analyzed
chemical,
thermal,
mechanical
determined
efficiency
based
particle
concentration
immunoassay
activity.
We,
first
time,
discovered
that
vortex
was
an
efficient
method
used
it
surface
markers
in
reverse
phase
gold-nanoparticle-embedded
membrane.
phosphate-buffered
saline,
limits
up
3
orders
magnitude
lower
than
enzyme-linked
immunosorbent
assay
were
achieved.
spiked
human
plasma,
as
low
7.27
×
104
EVs/mL
achieved,
making
suitable
These
results
demonstrated
effective
pipeline
lysing
complex
biofluids,
paving
way
broad
applications
biomedicine.