bioRxiv (Cold Spring Harbor Laboratory),
Journal Year:
2023,
Volume and Issue:
unknown
Published: Nov. 1, 2023
Abstract
Cancer
cellular
heterogeneity
and
therapy
resistance
arise
substantially
from
metabolic
transcriptional
adaptations,
but
how
these
are
interconnected
is
poorly
understood.
Here,
we
show
that
in
melanoma,
the
cancer
stem
cell
marker
aldehyde
dehydrogenase
1A3
(ALDH1A3)
forms
an
enzymatic
partnership
with
acetyl-CoA
synthetase
2
(ACSS2)
nucleus
to
couple
high
glucose
flux
acetyl-histone
H3
modification
of
neural
crest
lineage
metabolism
genes.
Importantly,
acetaldehyde
a
metabolite
source
for
ALDH1A3,
dependent
manner
providing
physiologic
function
this
highly
volatile
toxic
metabolite.
In
zebrafish
model
melanoma
residual
disease,
subpopulation
ALDH1-high
cells
emerges
following
BRAF
inhibitor
treatment
targeting
ALDH1
suicide
inhibitor,
nifuroxazide,
delays
or
prevents
drug-resistant
relapse.
Our
work
reveals
ALDH1A3-ACSS2
directly
coordinates
nuclear
acetaldehyde-acetyl-CoA
specific
chromatin-based
gene
regulation
represents
potential
therapeutic
vulnerability
melanoma.
Highlights
ALDH1A3-high
melanomas
dual
state.
Nuclear
ALDH1A3
partners
ACSS2
promote
selective
H3.
Acetaldehyde
acetyl
histone
acetylation.
master
regulator
pharmaceutical
target
heterogeneity.
Nature Communications,
Journal Year:
2023,
Volume and Issue:
14(1)
Published: March 6, 2023
Abstract
Neural
crest
cells
are
highly
multipotent
stem
cells,
but
it
remains
unclear
how
their
fate
restriction
to
specific
fates
occurs.
The
direct
model
hypothesises
that
migrating
maintain
full
multipotency,
whilst
progressive
envisages
fully
transitioning
partially-restricted
intermediates
before
committing
individual
fates.
Using
zebrafish
pigment
cell
development
as
a
model,
we
show
applying
NanoString
hybridization
single
transcriptional
profiling
and
RNAscope
in
situ
neural
retain
broad
multipotency
throughout
migration
even
post-migratory
vivo,
with
no
evidence
for
intermediates.
We
find
leukocyte
tyrosine
kinase
early
expression
marks
stage,
signalling
driving
iridophore
differentiation
through
repression
of
fate-specific
transcription
factors
other
reconcile
the
models
by
proposing
occurs
directly,
dynamically,
from
state,
consistent
our
recently-proposed
Cyclical
Fate
Restriction
model.
Development,
Journal Year:
2024,
Volume and Issue:
151(15)
Published: Aug. 1, 2024
Melanocytes
evolved
to
produce
the
melanin
that
gives
colour
our
hair,
eyes
and
skin.
The
melanocyte
lineage
also
rise
melanoma,
most
lethal
form
of
skin
cancer.
differentiates
from
neural
crest
cells
during
development,
melanocytes
reside
in
where
they
are
replenished
by
stem
cells.
Because
molecular
mechanisms
necessary
for
specification,
migration,
proliferation
differentiation
co-opted
melanoma
initiation
progression,
studying
development
is
directly
relevant
human
disease.
Here,
through
lens
advances
cellular
omic
genomic
technologies,
we
review
latest
findings
differentiation,
how
these
developmental
pathways
become
dysregulated
Clinical and Translational Medicine,
Journal Year:
2024,
Volume and Issue:
14(5)
Published: May 1, 2024
Abstract
Melanocyte
stem
cells
(MSCs),
melanocyte
lineage‐specific
skin
derived
from
the
neural
crest,
are
observed
in
mammalian
hair
follicle,
epidermis
or
sweat
gland.
MSCs
differentiate
into
mature
melanin‐producing
melanocytes,
which
confer
and
pigmentation
uphold
vital
functions.
In
controlling
coordinating
homeostasis,
repair
regeneration
of
tissue,
play
a
role.
Decreased
numbers
impaired
functions
closely
associated
with
development
therapy
many
conditions,
such
as
graying,
vitiligo,
wound
healing
melanoma.
With
advancement
cell
technology,
relevant
features
have
been
further
elaborated.
this
review,
we
provide
an
exhaustive
overview
cutaneous
highlight
latest
advances
MSC
research.
A
better
understanding
biological
characteristics
micro‐environmental
regulatory
mechanisms
will
help
to
improve
clinical
applications
regenerative
medicine,
disorders
cancer
therapy.
Key
points
This
review
provides
concise
summary
origin,
characteristics,
homeostatic
maintenance
therapeutic
potential
MSCs.
The
role
application
value
discussed.
significance
single‐cell
RNA
sequencing,
CRISPR‐Cas9
technology
practical
models
research
is
highlighted.
PLoS Genetics,
Journal Year:
2022,
Volume and Issue:
18(5), P. e1010207 - e1010207
Published: May 17, 2022
In
developing
melanocytes
and
in
melanoma
cells,
multiple
paralogs
of
the
Activating-enhancer-binding
Protein
2
family
transcription
factors
(TFAP2)
contribute
to
expression
genes
encoding
pigmentation
regulators,
but
their
interaction
with
Microphthalmia
factor
(MITF),
a
master
regulator
these
is
unclear.
Supporting
model
that
TFAP2
facilitates
MITF’s
ability
activate
genes,
single-cell
seq
analysis
zebrafish
embryos
revealed
are
only
expressed
subset
mitfa
-expressing
cells
also
express
tfap2
paralogs.
To
test
this
SK-MEL-28
we
deleted
two
highest
expression,
TFAP2A
TFAP2C
,
creating
knockout
(
-KO)
cells.
We
then
assessed
gene
chromatin
accessibility,
binding
MITF,
marks
H3K27Ac
H3K27Me3
which
characteristic
active
enhancers
silenced
chromatin,
respectively.
Integrated
analyses
datasets
indicate
directly
near
enriched
for
roles
proliferation,
repress
cell
adhesion.
Consistently,
compared
WT
-KO
proliferate
less
adhere
one
another
more.
MITF
co-operatively
enhancers,
former
necessary
accessibility.
By
contrast,
do
not
appear
inhibit
enhancers.
These
studies
reveal
mechanism
by
profoundly
influences
set
activated
thereby
phenotype
pigment
Communications Biology,
Journal Year:
2024,
Volume and Issue:
7(1)
Published: March 5, 2024
Abstract
Transparent
immunodeficient
animal
models
not
only
enhance
in
vivo
imaging
investigations
of
visceral
organ
development
but
also
facilitate
tracking
transplanted
tumor
cells.
However,
at
present,
transparent
and
are
confined
to
zebrafish,
presenting
substantial
challenges
for
real-time,
studies
addressing
specific
biological
inquiries.
Here,
we
employed
a
mitf
−/−
/
prkdc
il2rg
triple-knockout
strategy
establish
colorless
amphibian
model
Xenopus
tropicalis
.
By
disrupting
the
gene,
observed
loss
melanophores,
xanthophores,
granular
glands
Through
endogenous
promoter
drive
BRAF
V600E
expression,
confirmed
expression
xanthophores
glands.
Moreover,
reconstruction
disrupted
site
effectively
reinstated
glands,
further
highlighting
crucial
role
as
regulator
their
development.
crossing
frogs
with
frogs,
generated
line,
providing
model.
Utilizing
this
model,
successfully
intravital
metastases
allotransplanted
xanthophoromas
migrations
melanomas.
Overall,
holds
great
promise
valuable
platform
tumorous
developmental
biology
research.
ABSTRACT
Pigment
cells
not
only
are
intrinsic
factors
to
determine
animal
patterns,
but
also
play
vital
roles
in
numerous
behavioral
and
physiological
processes
as
well
health,
such
melanomas
originating
from
melanocytes.
Model
organisms
commonly
used
study
pigment
cell
development
the
mechanisms
underlying
related
diseases,
with
zebrafish
mice,
Xenopus
being
well‐established
examples.
tropicalis
,
a
diploid
amphibian
model,
offers
advantages
high
fecundity
easily
observable
development.
Recent
advancements
gene‐editing
techniques
have
increased
its
prominence
research
on
biology
melanoma
pathogenesis.
Here,
we
compare
skin
distribution
structure
X.
zebrafish,
humans
point
out
potential
value
of
using
model
human
melanoma.