bioRxiv (Cold Spring Harbor Laboratory),
Journal Year:
2023,
Volume and Issue:
unknown
Published: Aug. 4, 2023
Abstract
Biochemical
and
immunological
negative
regulators
converge
to
inhibit
tumor-reactive
Chimeric
Antigen
Receptor
T
(CAR-T)
cells,
which
may
explain
clinical
failures
of
CAR-T
cell
therapies
against
solid
tumors.
Here,
we
developed
a
multifaceted
approach
genetically
engineer
allogeneic
(‘off
-the-shelf’)
cells
resistant
both
biochemical
(adenosine)
(PD-L1
TGF-β)
inhibitory
signaling.
We
multiplexed
an
adenine
base
editor
with
CRISPR-Cas12b
nuclease
manufacture
product
comprising
six
gene
edits
evade
allorejection
(
B2M,
CIITA
),
prevent
graft-versus-host
disease
CD3E
)
resist
major
ADORA2A
PDCD1
,
TGFBR2
immunosuppressive
barriers
in
Combinatorial
genetic
disruption
enabled
superior
anti-tumor
efficacy
leading
improved
tumor
elimination
survival
humanized
mouse
models
that
recapitulated
the
suppressive
features
human
microenvironment
(TME).
This
novel
engineering
strategy
conferred
resistance
diverse
TME,
unlock
therapeutic
potential
One
Sentence
Summary
Multiplex
genome
engineered
convergence
within
exhibit
Molecular Therapy — Methods & Clinical Development,
Journal Year:
2024,
Volume and Issue:
32(2), P. 101250 - 101250
Published: April 16, 2024
CAR-T
cell
therapies
have
consolidated
their
position
over
the
last
decade
as
an
effective
alternative
to
conventional
chemotherapies
for
treatment
of
a
number
hematological
malignancies.
With
exponential
increase
in
commercial
and
hundreds
phase
1
trials
exploring
efficacy
different
settings
(including
autoimmunity
solid
tumors),
demand
manufacturing
capabilities
recent
years
has
considerably
increased.
In
this
review,
we
explore
current
landscape
discuss
some
challenges
limiting
production
capacity
worldwide.
We
describe
latest
technical
developments
GMP
platform
design
facilitate
delivery
range
increasingly
complex
products,
associated
with
translation
new
scientific
into
clinical
products
patients.
all
aspects
process,
namely
early
development,
technology,
quality
control,
requirements
industrial
scaling.
Finally,
faced
small
academic
team,
responsible
high
innovative
our
experience
setup
bench-to-clinic
pipeline,
streamlined
workflow,
implementation
diverse
portfolio
trials.
Frontiers in Immunology,
Journal Year:
2023,
Volume and Issue:
14
Published: Sept. 11, 2023
Regulatory
T
cells
(Treg),
as
members
of
CD4+
cells,
have
garnered
extensive
attention
in
the
research
tumor
progression.
Treg
function
inhibiting
immune
effector
preventing
tissue
damage,
and
suppressing
inflammation.
Under
stimulation
inflammatory
microenvironment
(IM),
reprogramming
enhances
their
suppression
responses,
ultimately
promoting
escape
or
Reducing
number
IM
lowering
activity
while
reprogramming,
can
help
promote
body's
anti-tumor
responses.
This
review
introduces
a
mechanism
IM;
discusses
regulation
on
The
control
response
to
immunotherapy
are
analyzed
countermeasures
proposed.
work
will
provide
foundation
for
downregulating
immunosuppressive
role
environment
future
immunotherapy.
Immunological Reviews,
Journal Year:
2023,
Volume and Issue:
320(1), P. 250 - 267
Published: July 31, 2023
Since
their
discovery,
CD4+
CD25hi
FOXP3hi
regulatory
T
cells
(Tregs)
have
been
firmly
established
as
a
critical
cell
type
for
regulating
immune
homeostasis
through
plethora
of
mechanisms.
Due
to
immunoregulatory
power,
delivery
polyclonal
Tregs
has
explored
therapy
dampen
inflammation
in
the
settings
transplantation
and
autoimmunity.
Evidence
shows
that
Treg
is
safe
well-tolerated,
but
efficacy
remains
undefined
could
be
limited
by
poor
persistence
vivo
lack
antigen
specificity.
With
advent
new
genetic
engineering
tools,
it
now
possible
create
bespoke
"designer"
not
only
overcome
limitations
also
introduce
features.
Here,
we
review
development
designer
perspective
three
'eras':
(1)
era
FOXP3
engineering,
which
breakthroughs
biological
understanding
this
transcription
factor
enabled
conversion
conventional
Tregs;
(2)
antigen-specificity
era,
transgenic
T-cell
receptors
chimeric
were
introduced
more
potent
directed
therapies;
(3)
current
harnessing
advanced
genome-editing
techniques
refine
existing
approaches.
The
year
2022
marked
entry
into
clinic,
with
exciting
potential
application
wide
variety
immune-mediated
diseases.
bioRxiv (Cold Spring Harbor Laboratory),
Journal Year:
2024,
Volume and Issue:
unknown
Published: Feb. 23, 2024
Abstract
Chimeric
antigen
receptor
(CAR)
T
cell
therapy
for
solid
tumors
remains
challenging
due
to
the
complex
manufacturing
process
and
immunosuppressive
tumor
microenvironment.
The
condition
directly
impacts
CAR
yield,
phenotype,
metabolism,
which
correlate
with
in
vivo
potency
persistence.
Optical
metabolic
imaging
(OMI)
is
a
non-invasive,
label-free
method
evaluate
single
metabolism
based
on
autofluorescent
coenzymes
NAD(P)H
FAD.
Using
OMI,
we
identified
dominating
of
media
composition
over
selection
antibody
stimulation
and/or
cytokines
anti-GD2
activation
strength
kinetics,
phenotype.
We
demonstrated
that
OMI
parameters
were
indicative
cycle
stage
optimal
gene
transfer
conditions
both
viral
transduction
electroporation-based
CRISPR/Cas9.
Notably,
accurately
predicted
oxidative
phenotype
virus-free
CRISPR-edited
cells
correlated
higher
against
neuroblastoma.
Our
data
supports
OMI’s
potential
as
robust,
sensitive
analytical
tool
enables
dynamic
increased
yield
fitness.
One
sentence
summary
Autofluorescence
informs
enhance
fitness
Immunometabolism,
Journal Year:
2025,
Volume and Issue:
7(1), P. e00055 - e00055
Published: Jan. 1, 2025
The
approval
of
chimeric
antigen
receptor
(CAR)
T
cell
therapies
for
the
treatment
hematological
cancers
has
marked
a
new
era
in
cancer
care,
with
seven
products
being
FDA
approved
since
2017.
However,
challenges
remain,
and
while
profound
effects
are
observed
initially
myeloma,
majority
patients
relapse,
which
is
concomitant
poor
CAR
persistence.
Similarly,
efficacy
therapy
limited
solid
tumors,
largely
due
to
tumor
heterogeneity,
immune
evasion
mechanisms,
infiltration
In
this
recent
study,
Guerrero
et
al
endeavor
improve
human
cells
by
overexpressing
glucose
transporter
GLUT1
show
that
have
improved
capacity
persist
control
burden
vivo.
The
differentiation
and
suppressive
functions
of
regulatory
CD4
T
cells
(Tregs)
are
supported
by
a
broad
array
metabolic
changes,
providing
potential
therapeutic
targets
for
immune
modulation.
In
this
study,
we
focused
on
the
role
glycolytic
enzymes
in
Tregs
identified
phosphoglycerate
mutase
(PGAM)
as
being
differentially
overexpressed
associated
with
highly
phenotype.
Pharmacologic
or
genetic
inhibition
PGAM
reduced
Treg
function
while
reciprocally
inducing
markers
pro-inflammatory,
helper
17
(Th17)-like
state.
was
dependent
contribution
3-phosphoglycerate
(3PG),
substrate,
to
de
novo
serine
synthesis.
Blocking
synthesis
from
3PG
reversed
effect
polarization,
exogenous
directly
inhibited
polarization.
Additionally,
altering
levels
vivo
serine/glycine-free
diet
increased
peripheral
attenuated
autoimmunity
murine
model
multiple
sclerosis.
Mechanistically,
found
that
limits
polarization
contributing
one-carbon
metabolism
methylation
Treg-associated
genes.
Inhibiting
both
vitro
autoimmune
colitis.
Our
study
identifies
novel
physiologic
highlights
interconnectivity
between
glycolysis,
synthesis,
metabolism,
epigenetic
regulation
function.
The
differentiation
and
suppressive
functions
of
regulatory
CD4
T
cells
(Tregs)
are
supported
by
a
broad
array
metabolic
changes,
providing
potential
therapeutic
targets
for
immune
modulation.
In
this
study,
we
focused
on
the
role
glycolytic
enzymes
in
Tregs
identified
phosphoglycerate
mutase
(PGAM)
as
being
differentially
overexpressed
associated
with
highly
phenotype.
Pharmacologic
or
genetic
inhibition
PGAM
reduced
Treg
function
while
reciprocally
inducing
markers
pro-inflammatory,
helper
17
(Th17)-like
state.
was
dependent
contribution
3-phosphoglycerate
(3PG),
substrate,
to
de
novo
serine
synthesis.
Blocking
synthesis
from
3PG
reversed
effect
polarization,
exogenous
directly
inhibited
polarization.
Additionally,
altering
levels
vivo
serine/glycine-free
diet
increased
peripheral
attenuated
autoimmunity
murine
model
multiple
sclerosis.
Mechanistically,
found
that
limits
polarization
contributing
one-carbon
metabolism
methylation
Treg-associated
genes.
Inhibiting
both
vitro
autoimmune
colitis.
Our
study
identifies
novel
physiologic
highlights
interconnectivity
between
glycolysis,
synthesis,
metabolism,
epigenetic
regulation
function.
Discover Oncology,
Journal Year:
2025,
Volume and Issue:
16(1)
Published: April 2, 2025
Immunotherapy
in
the
treatment
of
cancer,
with
immune
inhibitors
helps
many
cancer
types.
Many
patients
still
encounter
resistance
to
these
treatments,
though.
This
is
mediated
by
metabolic
changes
tumour
microenvironment
and
cells.
The
development
novel
treatments
overcome
boost
immunotherapy's
effectiveness
depends
on
changes.
review
concentrates
molecular
mechanisms
through
which
transformation
contributes
immunotherapy
resistance.
Additionally,
research
therapeutic
approaches
that
target
pathways
enhance
for
We
used
databases
available
PubMed,
Scopus,
Web
Science
perform
a
thorough
peer-reviewed
literature.
focusing
tumor
microenvironment,
mechanisms,
metabolism.
study
covers
oxidative
phosphorylation,
glycolysis,
lipid
metabolism,
amino
acid
An
immunosuppressive
produced
cells,
such
as
dysregulated
enhanced
glutaminolysis,
increased
glycolysis
(Warburg
effect).
Myeloid-derived
suppressor
cells
regulatory
T
are
promoted,
responses
suppressed,
cell
activity
impaired
when
lactate
other
metabolites
build
up.
metabolism
acids
arginine
tryptophan,
nutrients
crucial
function.
By
enhancing
their
function
alterations
aid
checkpoint
inhibitors.
Metabolic
change
plays
key
role
Gaining
knowledge
processes
can
help
develop
efficient
improve
effectiveness.
In
order
determine
best
targets
intervention,
future
studies
should
concentrate
patient-specific
profiling.
Frontiers in Oncology,
Journal Year:
2024,
Volume and Issue:
14
Published: Oct. 9, 2024
Introduction
Effective
infiltration
of
chimeric
antigen
receptor
T
(CAR-T)
cells
into
solid
tumors
is
critical
for
achieving
a
robust
antitumor
response
and
improving
therapeutic
outcomes.
While
CAR-T
cell
therapies
have
succeeded
in
hematologic
malignancies,
their
efficacy
remains
limited
due
to
poor
tumor
penetration
an
immunosuppressive
microenvironment.
This
study
aimed
evaluate
the
potential
low-dose
radiotherapy
(LDRT)
administered
before
T-cell
therapy
enhance
effect
by
promoting
infiltration.
We
hypothesized
that
combining
LDRT
with
would
improve
control
survival
compared
either
treatment
alone.
Methods
investigated
this
hypothesis
using
two
NSG
mouse
models
bearing
GSU
or
CAPAN-2
tumors.
The
mice
were
treated
engineered
targeting
guanyl
cyclase-C
(GCC)
mesothelin
as
monotherapy
combination
LDRT.
Additionally,
we
extended
approach
C57BL/6
model
implanted
MC38-gp100+
cells,
followed
adoptive
transfer
pmel+
after
Tumor
growth
outcomes
monitored
all
models.
Furthermore,
employed
atomic
force
microscopy
(AFM)
small
cohort
assess
effects
on
stiffness
plasticity,
exploring
role
nanomechanics
biomarker
efficacy.
Results
Our
results
demonstrated
enhanced
prolonged
across
led
superior
suppression
monotherapy,
highlighting
synergistic
impact
combined
approach.
AFM
analysis
revealed
significant
changes
plasticity
LDRT,
suggesting
nanomechanical
properties
may
be
predictive
response.
Discussion
findings
highlight
transformative
incorporating
precursor
By
microenvironment,
improved
outcomes,
offering
promising
strategy
overcome
challenges
associated
observed
through
suggest
could
biomarkers
predicting
These
support
further
investigation
clinical
application
cell-based
patients