RNA,
Journal Year:
2017,
Volume and Issue:
23(12), P. 1754 - 1769
Published: Aug. 30, 2017
RNA
modifications
have
been
historically
considered
as
fine-tuning
chemo-structural
features
of
infrastructural
RNAs,
such
rRNAs,
tRNAs,
and
snoRNAs.
This
view
has
changed
dramatically
in
recent
years,
to
a
large
extent
result
systematic
efforts
map
quantify
various
transcriptome-wide
manner,
revealing
that
are
reversible,
dynamically
regulated,
far
more
widespread
than
originally
thought,
involved
major
biological
processes,
including
cell
differentiation,
sex
determination,
stress
responses.
Here
we
summarize
the
state
knowledge
provide
catalog
their
links
neurological
disorders,
cancers,
other
diseases.
With
advent
direct
RNA-sequencing
technologies,
expect
this
will
help
prioritize
those
for
maps.
Cell Research,
Journal Year:
2017,
Volume and Issue:
27(5), P. 606 - 625
Published: April 18, 2017
5-methylcytosine
(m5C)
is
a
post-transcriptional
RNA
modification
identified
in
both
stable
and
highly
abundant
tRNAs
rRNAs,
mRNAs.
However,
its
regulatory
role
mRNA
metabolism
still
largely
unknown.
Here,
we
reveal
that
m5C
modification
enriched
CG-rich
regions
immediately
downstream
of
translation
initiation
sites
has
conserved,
tissue-specific
dynamic
features
across
mammalian
transcriptomes.
Moreover,
formation
mRNAs
mainly
catalyzed
by
the
methyltransferase
NSUN2,
specifically
recognized
export
adaptor
ALYREF
as
shown
vitro
vivo
studies.
NSUN2
modulates
ALYREF's
nuclear-cytoplasmic
shuttling,
RNA-binding
affinity
associated
export.
Dysregulation
ALYREF-mediated
upon
depletion
could
be
restored
reconstitution
wild-type
but
not
methyltransferase-defective
NSUN2.
Our
study
provides
comprehensive
profiles
transcriptomes
suggests
an
essential
for
regulation.
Cell Discovery,
Journal Year:
2018,
Volume and Issue:
4(1)
Published: Feb. 23, 2018
N6-methyladenosine
(m6A)
is
enriched
in
3'untranslated
region
(3'UTR)
and
near
stop
codon
of
mature
polyadenylated
mRNAs
mammalian
systems
has
regulatory
roles
eukaryotic
mRNA
transcriptome
switch.
Significantly,
the
mechanism
for
this
modification
preference
remains
unknown,
however.
Herein
we
report
a
characterization
full
m6A
methyltransferase
complex
HeLa
cells
identifying
METTL3/METTL14/WTAP/VIRMA/HAKAI/ZC3H13
as
key
components,
show
that
VIRMA
mediates
preferential
methylation
3'UTR
codon.
Biochemical
studies
reveal
recruits
catalytic
core
components
METTL3/METTL14/WTAP
to
guide
region-selective
methylations.
Around
60%
immunoprecipitation
targets
manifest
strong
enrichment
3'UTR.
Depletions
METTL3
induce
lengthening
several
hundred
with
over
50%
common.
associates
polyadenylation
cleavage
factors
CPSF5
CPSF6
an
RNA-dependent
manner.
Depletion
leads
significant
shortening
2800
mRNAs,
84%
which
are
modified
have
increased
peak
density
after
knockdown.
Together,
our
provide
insights
into
deposition
specificity
its
correlation
alternative
polyadenylation.
Molecular Cancer,
Journal Year:
2020,
Volume and Issue:
19(1)
Published: March 12, 2020
The
epigenetic
regulation
of
immune
response
has
been
demonstrated
in
recent
studies.
Nonetheless,
potential
roles
RNA
N6-methyladenosine
(m6A)
modification
tumor
microenvironment
(TME)
cell
infiltration
remain
unknown.We
comprehensively
evaluated
the
m6A
patterns
1938
gastric
cancer
samples
based
on
21
regulators,
and
systematically
correlated
these
with
TME
cell-infiltrating
characteristics.
m6Ascore
was
constructed
to
quantify
individual
tumors
using
principal
component
analysis
algorithms.Three
distinct
were
determined.
characteristics
under
three
highly
consistent
phenotypes
including
immune-excluded,
immune-inflamed
immune-desert
phenotypes.
We
evaluation
within
could
predict
stages
inflammation,
subtypes,
stromal
activity,
genetic
variation,
patient
prognosis.
Low
m6Ascore,
characterized
by
increased
mutation
burden
activation
immunity,
indicated
an
inflamed
phenotype,
69.4%
5-year
survival.
Activation
stroma
lack
effective
observed
high
subtype,
indicating
a
non-inflamed
immune-exclusion
poorer
also
linked
neoantigen
load
enhanced
anti-PD-1/L1
immunotherapy.
Two
immunotherapy
cohorts
confirmed
patients
lower
significant
therapeutic
advantages
clinical
benefits.This
work
revealed
played
nonnegligible
role
formation
diversity
complexity.
Evaluating
pattern
will
contribute
enhancing
our
cognition
characterization
guiding
more
strategies.
Biomedicine & Pharmacotherapy,
Journal Year:
2019,
Volume and Issue:
112, P. 108613 - 108613
Published: Feb. 19, 2019
N6-methyladenosine
(m6A),
the
most
abundant
internal
modification
of
RNA
in
eukaryotic
cells,
has
gained
increasing
attention
recent
years.
The
m6A
affects
multiple
aspects
metabolism,
ranging
from
processing,
nuclear
export,
translation
to
decay.
Emerging
evidence
suggests
that
methylation
plays
a
critical
role
cancer
through
various
mechanisms.
Moreover,
provided
more
possibilities
for
early
diagnosis
and
treatment
cancers.
In
this
review,
we
focus
on
m6A-associated
mechanisms
functions
several
major
malignancies
summarize
dual
as
well
its
prospects
cancer.
Cell Research,
Journal Year:
2018,
Volume and Issue:
28(5), P. 507 - 517
Published: April 23, 2018
N6-methyladenosine
(m6A),
the
most
abundant
internal
modification
in
eukaryotic
messenger
RNAs
(mRNAs),
has
been
shown
to
play
critical
roles
various
normal
bioprocesses
such
as
tissue
development,
stem
cell
self-renewal
and
differentiation,
heat
shock
or
DNA
damage
response,
maternal-to-zygotic
transition.
The
m6A
is
deposited
by
methyltransferase
complex
(MTC;
i.e.,
writer)
composed
of
METTL3,
METTL14
WTAP,
probably
also
VIRMA
RBM15,
can
be
removed
demethylases
(i.e.,
erasers)
FTO
ALKBH5.
fates
m6A-modified
mRNAs
rely
on
functions
distinct
proteins
that
recognize
them
readers),
which
may
affect
stability,
splicing,
and/or
translation
target
mRNAs.
Given
functional
importance
machinery
bioprocesses,
it
not
surprising
evidence
emerging
dysregulation
associated
contributes
initiation,
progression,
drug
response
cancers.
In
this
review,
we
focus
recent
advances
study
biological
underlying
molecular
mechanisms
dysregulated
pathogenesis
types
addition,
discuss
possible
therapeutic
interventions
against
treat
Gut,
Journal Year:
2019,
Volume and Issue:
69(7), P. 1193 - 1205
Published: Oct. 3, 2019
Objective
N
6
-methyladenosine
(m
A)
RNA
methylation
and
its
associated
methyltransferase
METTL3
are
involved
in
tumour
initiation
progression
via
the
regulation
of
function.
This
study
explored
biological
function
clinical
significance
gastric
cancer
(GC).
Design
The
prognostic
value
expression
was
evaluated
using
tissue
microarray
immunohistochemical
staining
analyses
a
human
GC
cohort.
role
mechanism
growth
liver
metastasis
were
determined
vitro
vivo.
Results
level
m
A
significantly
increased
GC,
main
regulator
abundant
modification.
elevated
tissues
with
poor
prognosis.
Multivariate
Cox
regression
analysis
revealed
that
an
independent
factor
effective
predictor
patients
GC.
Moreover,
overexpression
promoted
proliferation
Mechanistically,
P300-mediated
H3K27
acetylation
activation
promoter
induced
transcription,
which
stimulated
modification
HDGF
mRNA,
reader
IGF2BP3
then
directly
recognised
bound
to
site
on
mRNA
enhanced
stability.
Secreted
angiogenesis,
while
nuclear
activated
GLUT4
ENO2
expression,
followed
by
increase
glycolysis
cells,
correlated
subsequent
metastasis.
Conclusions
Elevated
promotes
angiogenesis
indicating
is
potential
biomarker
therapeutic
target
for