Antigen-presenting cancer-associated fibroblasts in murine pancreatic tumors differentially control regulatory T cell phenotype and function via CXCL9 and CCL22
bioRxiv (Cold Spring Harbor Laboratory),
Год журнала:
2025,
Номер
unknown
Опубликована: Апрель 1, 2025
Pancreatic
ductal
adenocarcinoma
(PDAC)
is
characterized
by
a
complex
tumor
microenvironment
(TME)
including
stromal
cells
that
influence
resistance
to
therapy.
Recent
studies
have
revealed
cancer-associated
fibroblasts
(CAFs)
are
heterogeneous
in
origin,
gene
expression,
and
function.
Antigen-presenting
CAFs
(apCAFs),
defined
major
histocompatibility
(MHC)-II
expression
can
activate
effector
CD4
+
T
the
potential
contribute
anti-cancer
immune
response,
but
also
induce
regulatory
cell
(Treg)
differentiation.
Whether
apCAFs
promote
or
restrain
antitumor
response
remains
uncertain.
Using
clones
of
KPC
murine
PDAC
model
differing
sensitivity
checkpoint
blockade
(ICB),
we
found
immunosensitive
(sKPC)
tumors
were
higher
apCAF
infiltration
than
resistant
(rKPC)
tumors.
IMC
analysis
showed
proximity
both
sKPC
rKPC
implicating
interaction
within
TME.
apCAF-depleted
tumor-bearing
mice
had
diminished
ICB.
from
activated
tumor-infiltrating
induced
Treg
However,
transcriptomic
Tregs
overexpressed
for
immunosuppressive
genes
rKPCs
relative
sKPCs,
this
associated
with
differential
chemokine
signaling
depending
on
origin.
Together
these
data
implicate
as
important
mediators
modulation
which
could
facilitate
development
more
effective
anti-tumor
based
approaches
patients.
Язык: Английский
Revisiting the role of cancer-associated fibroblasts in tumor microenvironment
Frontiers in Immunology,
Год журнала:
2025,
Номер
16
Опубликована: Апрель 17, 2025
Cancer-associated
fibroblasts
(CAFs)
are
integral
components
of
the
tumor
microenvironment
playing
key
roles
in
progression,
metastasis,
and
therapeutic
resistance.
However,
challenges
persist
understanding
their
heterogeneity,
origin,
functional
diversity.
One
major
obstacle
is
lack
standardized
naming
conventions
for
CAF
subpopulations,
with
current
systems
failing
to
capture
full
complexity.
Additionally,
identification
CAFs
hindered
by
absence
specific
biomarkers,
limiting
precision
diagnostic
strategies.
In
vitro
culture
conditions
often
fail
maintain
vivo
characteristics
CAFs,
which
complicates
study
translation
findings
clinical
practice.
Although
detection
methods,
such
as
antibodies,
mRNA
probes,
single-cell
transcriptomics,
offer
insights
into
biology,
they
standardization
provide
reliable
quantitative
measures.
Furthermore,
dynamic
interactions
between
cells,
immune
cells
within
TME
remain
insufficiently
understood,
role
evasion
therapy
resistance
an
area
ongoing
research.
Understanding
how
influence
drug
response
essential
developing
more
effective
cancer
therapies.
This
review
aims
in-depth
analysis
research,
propose
future
research
directions,
emphasize
need
improved
CAF-targeted
By
addressing
these
gaps,
it
seeks
highlight
potential
targets
overcoming
enhancing
efficacy
treatments.
Язык: Английский