British Journal of Cancer,
Journal Year:
2024,
Volume and Issue:
130(12), P. 2003 - 2015
Published: April 15, 2024
Abstract
Background
Failure
of
immunotherapy
in
high-grade
serous
ovarian
cancer
(HGSC)
may
be
due
to
high
levels
transforming
growth
factor-β
(TGF-β)
ascites
or
tumour
immune
microenvironment
(TIME).
Here,
we
test
whether
coordinated
blockade
TGF-β
and
PD-L1
with
bintrafusp
alfa
(BA)
can
provoke
anti-tumour
responses
preclinical
HGSC
models.
Methods
BA
is
a
first-in-class
bifunctional
inhibitor
PD-L1,
was
tested
for
effects
on
overall
survival
altered
TIME
syngeneic
Results
Using
mouse
ID8-derived
model
IFNγ-inducible
expression,
treatments
significantly
reduced
development
burden.
depleted
VEGF
ascites,
skewed
the
towards
cytotoxicity
compared
control.
In
BR5
model,
increased
tumour-infiltrating
CD8
T
cells
effector
memory
cytotoxic
markers,
as
well
cytolytic
NK
cells.
Extended
produced
∼50%
BA-cured
mice
that
were
protected
from
re-challenge.
These
had
peritoneal
T-effector
controls.
Conclusions
Our
studies
advanced
models
support
further
testing
an
improved
option
patients
cancer.
Frontiers in Immunology,
Journal Year:
2024,
Volume and Issue:
15
Published: Feb. 13, 2024
Cancer
is
a
leading
cause
of
human
death
worldwide,
and
the
modulation
metabolic
properties
T
cells
employed
in
cancer
immunotherapy
holds
great
promise
for
combating
cancer.
As
crucial
factor,
energy
metabolism
influences
activation,
proliferation,
function
cells,
thus
reprogramming
unique
research
perspective
immunology.
Special
conditions
within
tumor
microenvironment
high-energy
demands
lead
to
alterations
cells.
In-depth
on
can
reveal
mechanisms
underlying
immune
tolerance
provide
important
clues
development
new
strategies
as
well.
Therefore,
study
cell
has
clinical
significance
potential
applications.
In
study,
current
achievements
were
reviewed.
Then,
influencing
factors
associated
with
introduced.
addition,
was
summarized,
which
highlighted
its
enhancing
therapeutic
outcomes.
summary,
exhaustion
leads
functional
exhaustion,
resulting
evasion
by
A
better
understanding
may
enable
combat
optimizing
existing
approaches.
British Journal of Cancer,
Journal Year:
2024,
Volume and Issue:
130(12), P. 2003 - 2015
Published: April 15, 2024
Abstract
Background
Failure
of
immunotherapy
in
high-grade
serous
ovarian
cancer
(HGSC)
may
be
due
to
high
levels
transforming
growth
factor-β
(TGF-β)
ascites
or
tumour
immune
microenvironment
(TIME).
Here,
we
test
whether
coordinated
blockade
TGF-β
and
PD-L1
with
bintrafusp
alfa
(BA)
can
provoke
anti-tumour
responses
preclinical
HGSC
models.
Methods
BA
is
a
first-in-class
bifunctional
inhibitor
PD-L1,
was
tested
for
effects
on
overall
survival
altered
TIME
syngeneic
Results
Using
mouse
ID8-derived
model
IFNγ-inducible
expression,
treatments
significantly
reduced
development
burden.
depleted
VEGF
ascites,
skewed
the
towards
cytotoxicity
compared
control.
In
BR5
model,
increased
tumour-infiltrating
CD8
T
cells
effector
memory
cytotoxic
markers,
as
well
cytolytic
NK
cells.
Extended
produced
∼50%
BA-cured
mice
that
were
protected
from
re-challenge.
These
had
peritoneal
T-effector
controls.
Conclusions
Our
studies
advanced
models
support
further
testing
an
improved
option
patients
cancer.