Abstract
Aldolase
A
(ALDOA),
a
crucial
glycolytic
enzyme,
is
often
aberrantly
expressed
in
various
types
of
cancer.
Although
ALDOA
has
been
reported
to
play
additional
roles
beyond
its
conventional
enzymatic
role,
nonmetabolic
function
and
underlying
mechanism
cancer
progression
remain
elusive.
Here,
it
shown
that
promotes
liver
growth
metastasis
by
accelerating
mRNA
translation
independent
catalytic
activity.
Mechanistically,
interacted
with
insulin‐
like
factor
2
mRNA‐binding
protein
1
(IGF2BP1)
facilitate
binding
m
6
A‐modified
eIF4G
mRNA,
thereby
increasing
levels
subsequently
enhancing
overall
biosynthesis
cells.
Importantly,
administration
GalNAc‐conjugated
siRNA
targeting
effectively
slows
the
tumor
orthotopic
xenografts.
Collectively,
these
findings
uncover
previously
unappreciated
modulating
highlight
potential
specifically
as
prospective
therapeutic
strategy
Cancer Research,
Год журнала:
2022,
Номер
82(19), С. 3516 - 3531
Опубликована: Окт. 4, 2022
Emerging
evidence
demonstrates
that
the
dysregulated
metabolic
enzymes
can
accelerate
tumorigenesis
and
progression
via
both
nonmetabolic
functions.
Further
elucidation
of
role
in
EGFR
inhibitor
resistance
metastasis,
two
leading
causes
death
lung
adenocarcinoma,
could
help
improve
patient
outcomes.
Here,
we
found
aberrant
upregulation
phosphoserine
aminotransferase
1
(PSAT1)
confers
erlotinib
tumor
metastasis
adenocarcinoma.
Depletion
PSAT1
restored
sensitivity
to
synergistically
augmented
tumoricidal
effect.
Mechanistically,
inhibition
activated
ROS-dependent
JNK/c-Jun
pathway
induce
cell
apoptosis.
In
addition,
interacted
with
IQGAP1,
subsequently
activating
STAT3-mediated
migration
independent
its
activity.
Clinical
analyses
showed
expression
positively
correlated
human
Collectively,
these
findings
reveal
multifunctionality
promoting
malignancy
through
activities.Metabolic
functions
confer
promote
suggesting
therapeutic
targeting
may
attenuate
malignant
features
cancer.
Signal Transduction and Targeted Therapy,
Год журнала:
2022,
Номер
7(1)
Опубликована: Окт. 24, 2022
Abstract
Whereas
it
is
appreciated
that
cancer
cells
rewire
lipid
metabolism
to
survive
and
propagate,
the
roles
of
in
metastasis
remain
largely
unknown.
In
this
study,
using
esophageal
squamous
cell
carcinoma
(ESCC)
as
a
pulmonary
model,
we
find
enzyme
fatty
acid
2-hydroxylase
(FA2H),
which
catalyzes
hydroxylation
free
acids
(FAs),
enriched
subpopulation
ESCC
with
high
metastatic
potential,
FA2H
knockdown
markedly
mitigates
lesions.
Moreover,
increased
expression
positively
associated
poor
survival
patients
ESCC.
Lipidomics
analysis
identifies
two
dihydroceramides—Cer(d18:0/24:0)
Cer(d18:0/24:1)—are
FA2H-depleted
metastasizing
cells.
Upon
administration,
Cer(d18:0/24:0)
Cer(d18:0/24:1)
impair
formation
overt
metastases
mouse
experimental
model.
Then,
forkhead
box
protein
C2
(FOXC2)
are
found
be
co-upregulated
populations
specimens,
further
experimentally
verified
transcriptionally
induced
by
FOXC2,
boosted
per
se
tumour
necrosis
factor
α
(TNFα),
critical
pro-metastasis
cytokine
microenvironment,
Together,
these
results
demonstrate
TNFα-FOXC2-FA2H
novel
signaling
axis
promote
metastasis,
its
downstream
dihydroceramide
products
could
promising
drugs
intervene
metastasis.
Cell Reports,
Год журнала:
2022,
Номер
41(7), С. 111639 - 111639
Опубликована: Ноя. 1, 2022
T
cells
dynamically
rewire
their
metabolism
during
an
immune
response.
We
applied
single-cell
RNA
sequencing
to
CD8+
activated
and
differentiated
in
vitro
physiological
medium
resolve
these
metabolic
dynamics.
identify
a
differential
time-dependent
reliance
of
activating
on
the
synthesis
versus
uptake
various
non-essential
amino
acids,
which
we
corroborate
with
functional
assays.
also
genes
that
potentially
dictate
outcome
cell
differentiation,
by
ranking
them
based
expression
Among
them,
find
asparagine
synthetase
(Asns),
whose
peaks
for
effector
decays
toward
memory
formation.
Disrupting
dynamics
ASNS
overexpression
promotes
phenotype,
enhancing
anti-tumor
response
adoptively
transferred
mouse
melanoma
model.
thus
provide
resource
dynamic
changes
activation
as
modulator
differentiation.
Journal of Clinical Investigation,
Год журнала:
2023,
Номер
133(21)
Опубликована: Сен. 18, 2023
The
facilitative
GLUT1
and
GLUT3
hexose
transporters
are
expressed
abundantly
in
macrophages,
but
whether
they
have
distinct
functions
remains
unclear.
We
confirmed
that
expression
increased
after
M1
polarization
stimuli
found
M2
stimulation
macrophages.
Conditional
deletion
of
Glut3
(LysM-Cre
Glut3fl/fl)
impaired
bone
marrow-derived
Alternatively
activated
macrophages
from
the
skin
patients
with
atopic
dermatitis
showed
expression,
a
calcipotriol-induced
model
was
rescued
LysM-Cre
Glut3fl/fl
mice.
M2-like
human
wound
tissues
as
assessed
by
transcriptomics
costaining,
significantly
decreased
nonhealing,
compared
healing,
diabetic
foot
ulcers.
In
an
excisional
healing
model,
mice
macrophage
delayed
healing.
promoted
IL-4/STAT6
signaling,
independently
its
glucose
transport
activity.
Unlike
plasma
membrane-localized
GLUT1,
localized
primarily
to
endosomes
required
for
efficient
endocytosis
IL-4Rα
subunits.
interacted
directly
GTP-bound
RAS
vitro
vivo
through
intracytoplasmic
loop
domain,
this
interaction
STAT6
activation
polarization.
PAK
macropinocytosis
were
also
without
GLUT3,
suggesting
broader
roles
regulation
endocytosis.
Thus,
is
alternative
function,
transport-independent,
RAS-mediated
role
activation.
Abstract
Aldolase
A
(ALDOA),
a
crucial
glycolytic
enzyme,
is
often
aberrantly
expressed
in
various
types
of
cancer.
Although
ALDOA
has
been
reported
to
play
additional
roles
beyond
its
conventional
enzymatic
role,
nonmetabolic
function
and
underlying
mechanism
cancer
progression
remain
elusive.
Here,
it
shown
that
promotes
liver
growth
metastasis
by
accelerating
mRNA
translation
independent
catalytic
activity.
Mechanistically,
interacted
with
insulin‐
like
factor
2
mRNA‐binding
protein
1
(IGF2BP1)
facilitate
binding
m
6
A‐modified
eIF4G
mRNA,
thereby
increasing
levels
subsequently
enhancing
overall
biosynthesis
cells.
Importantly,
administration
GalNAc‐conjugated
siRNA
targeting
effectively
slows
the
tumor
orthotopic
xenografts.
Collectively,
these
findings
uncover
previously
unappreciated
modulating
highlight
potential
specifically
as
prospective
therapeutic
strategy