Journal of Experimental & Clinical Cancer Research,
Journal Year:
2021,
Volume and Issue:
40(1)
Published: May 15, 2021
Intensive
evidence
has
highlighted
the
effect
of
aberrant
alternative
splicing
(AS)
events
on
cancer
progression
when
triggered
by
dysregulation
SR
protein
family.
Nonetheless,
underlying
mechanism
in
breast
(BRCA)
remains
elusive.
Here
we
sought
to
explore
molecular
function
SRSF1
and
identify
key
AS
regulated
BRCA.We
conducted
a
comprehensive
analysis
expression
clinical
correlation
BRCA
based
TCGA
dataset,
Metabric
database
tissue
samples.
Functional
was
vitro
vivo.
SRSF1-mediated
their
binding
motifs
were
identified
RNA-seq,
RNA
immunoprecipitation-PCR
(RIP-PCR)
vivo
crosslinking
followed
immunoprecipitation
(CLIP),
which
further
validated
minigene
reporter
assay.
PTPMT1
exon
3
(E3)
partially
mediate
oncogenic
role
P-AKT/C-MYC
axis.
Finally,
significance
these
samples
using
database.SRSF1
consistently
upregulated
samples,
positively
associated
with
tumor
grade
Ki-67
index,
correlated
poor
prognosis
hormone
receptor-positive
(HR+)
cohort,
facilitated
proliferation,
cell
migration
inhibited
apoptosis
We
discovered
motif
regulation
splice
switching
PTPMT1.
Furthermore,
directly
its
E3
mediated
AKT/C-MYC
Additionally,
patients
database.
The
high-risk
group,
SRSF1,
possessed
poorer
stage
I/II
cohort.SRSF1
exerts
roles
regulating
PTPMT1,
could
be
therapeutic
target
candidate
prognostic
factor
HR+
patient.
Signal Transduction and Targeted Therapy,
Journal Year:
2021,
Volume and Issue:
6(1)
Published: Feb. 24, 2021
Abstract
The
abnormal
regulation
of
alternative
splicing
is
usually
accompanied
by
the
occurrence
and
development
tumors,
which
would
produce
multiple
different
isoforms
diversify
protein
expression.
aim
present
study
was
to
conduct
a
systematic
review
in
order
describe
regulatory
mechanisms
splicing,
as
well
its
functions
tumor
cells,
from
proliferation
apoptosis
invasion
metastasis,
angiogenesis
metabolism.
events
contributed
progression
oncogenic
drivers
and/or
bystander
factors.
alterations
factors
detected
tumors
other
mis-splicing
(i.e.,
long
non-coding
circular
RNAs)
tumorigenesis
were
also
included.
findings
recent
therapeutic
approaches
targeting
catalysis
proteins
modulate
pathogenically
spliced
(including
tumor-specific
neo-antigens
for
cancer
immunotherapy)
introduced.
emerging
RNA-based
strategies
treatment
with
abnormally
discussed.
However,
further
studies
are
still
required
address
association
between
more
detail.
Drug Resistance Updates,
Journal Year:
2020,
Volume and Issue:
53, P. 100728 - 100728
Published: Sept. 28, 2020
Alternative
splicing
is
a
tightly
regulated
process
whereby
non-coding
sequences
of
pre-mRNA
are
removed
and
protein-coding
segments
assembled
in
diverse
combinations,
ultimately
giving
rise
to
proteins
with
distinct
or
even
opposing
functions.
In
the
past
decade,
whole
genome/transcriptome
sequencing
studies
revealed
high
complexity
regulation,
which
occurs
co-transcriptionally
influenced
by
chromatin
status
mRNA
modifications.
Consequently,
profiles
both
healthy
malignant
cells
display
diversity
alternative
was
shown
be
widely
deregulated
multiple
cancer
types.
particular,
mutations
regulatory
sequences,
regulators
modifiers,
as
well
differential
expression
factors
important
contributors
pathogenesis.
It
has
become
clear
that
these
aberrations
contribute
many
facets
cancer,
including
oncogenic
transformation,
progression,
response
anticancer
drug
treatment
resistance
therapy.
this
respect,
perturb
broad
spectrum
relevant
genes
involved
uptake/metabolism
(i.e.
SLC29A1,
dCK,
FPGS,
TP),
activation
nuclear
receptor
pathways
GR,
AR),
regulation
apoptosis
MCL1,
BCL-X,
FAS)
modulation
immunotherapy
(CD19).
Furthermore,
aberrant
constitutes
an
source
novel
biomarkers
spliceosome
machinery
represents
attractive
target
for
rapidly
expanding
class
therapeutic
agents.
Small
molecule
inhibitors
targeting
SF3B1
splice
factor
kinases
were
highly
cytotoxic
against
wide
range
models,
drug-resistant
cells.
Importantly,
effects
enhanced
specific
subsets,
such
factor-mutated
c-MYC-driven
tumors.
pre-clinical
report
synergistic
modulators
combination
conventional
antitumor
These
strategies
based
on
use
low
dose
could
shift
window
towards
decreased
toxicity
tissues.
Here
we
provide
extensive
overview
latest
findings
field
molecular
mechanisms
harness
drive
oncogenesis
evade
splicing-based
vulnerabilities
can
opportunities.
discuss
current
challenges
arising
from
genome-wide
detection
prediction
methods
splicing,
unravelling
functional
relevance
plethora
cancer-related
alterations.
Cell Stress,
Journal Year:
2020,
Volume and Issue:
4(8), P. 199 - 215
Published: July 24, 2020
Protein
methyl
transferases
play
critical
roles
in
numerous
regulatory
pathways
that
underlie
cancer
development,
progression
and
therapy-response.
Here
we
discuss
the
function
of
PRMT5,
a
member
nine-member
PRMT
family,
controlling
oncogenic
processes
including
tumor
intrinsic,
as
well
extrinsic
microenvironmental
signaling
pathways.
We
PRMT5
effect
on
histone
methylation
proteins
those
involved
RNA
splicing,
cell
cycle,
death
metabolic
signaling.
In
all,
highlight
importance
regulation
cancer,
which
provide
foundation
for
therapeutic
modalities
targeting
PRMT5.
Genome biology,
Journal Year:
2021,
Volume and Issue:
22(1)
Published: Jan. 14, 2021
Abstract
Background
Alternative
splicing
(AS)
is
a
widespread
regulatory
mechanism
in
multicellular
organisms.
Numerous
transcriptomic
and
single-gene
studies
plants
have
investigated
AS
response
to
specific
conditions,
especially
environmental
stress,
unveiling
substantial
amounts
of
intron
retention
that
modulate
gene
expression.
However,
comprehensive
study
contrasting
stress-response
tissue-specific
patterns
directly
comparing
them
with
those
animal
models
still
missing.
Results
We
generate
massive
resource
for
Arabidopsis
thaliana
,
PastDB
comprising
expression
quantifications
across
tissues,
development
including
abiotic
biotic
stresses.
Harmonized
analysis
these
datasets
reveals
A.
shows
high
levels
AS,
similar
fruitflies,
that,
compared
animals,
disproportionately
uses
stress
responses.
identify
core
sets
genes
regulated
specifically
by
either
or
transcription
upon
stresses
among
specialization
tightly
mirrored
the
genomic
features
genes.
Unexpectedly,
non-intron
events,
exon
skipping,
are
overrepresented
being
also
largely
involved
modulating
through
NMD
uORF
inclusion.
Conclusions
Non-intron
events
likely
been
functionally
underrated
plants.
constitutes
distinct
layer
controlling
internal
external
stimuli
whose
target
master
regulators
hardwired
at
level
undergo
post-transcriptional
regulation.
Given
higher
relevance
different
when
this
molecular
hardwiring
required
proper
.
Journal of Experimental & Clinical Cancer Research,
Journal Year:
2021,
Volume and Issue:
40(1)
Published: Jan. 6, 2021
Abstract
AS
(alternative
splicing)
is
a
fundamental
process
by
which
gene
can
generate
multiple
distinct
mRNA
transcripts
to
increase
protein
diversity.
Defects
in
influence
the
occurrence
and
development
of
many
diseases,
including
cancers,
are
frequently
found
participate
various
aspects
cancer
biology,
such
as
promoting
invasion,
metastasis,
apoptosis
resistance
drug
resistance.
NcRNAs
(noncoding
RNAs)
an
abundant
class
RNAs
that
do
not
encode
proteins.
include
miRNAs
(microRNAs),
lncRNAs
(long
noncoding
RNAs),
circRNAs
(circular
snRNAs
(small
nuclear
have
been
proven
act
regulatory
molecules
mediate
processes
through
AS.
directly
or
indirectly
plethora
molecular
targets
regulate
cis-acting
elements,
trans-acting
factors,
pre-mRNA
transcription
at
levels,
affecting
generating
alternatively
spliced
isoforms.
Consequently,
ncRNA-mediated
outcomes
affect
cellular
signaling
pathways
promote
suppress
progression.
In
this
review,
we
summarize
current
mechanisms
ncRNAs
cancers
discuss
their
potential
clinical
applications
biomarkers
therapeutic
targets.
Cells,
Journal Year:
2021,
Volume and Issue:
10(3), P. 484 - 484
Published: Feb. 24, 2021
Glioblastoma
(GBM)
is
the
most
lethal
type
of
primary
brain
cancer.
Standard
care
using
chemo-
and
radio-therapy
modestly
increases
overall
survival
patients;
however,
recurrence
inevitable,
due
to
treatment
resistance
lack
response
targeted
therapies.
GBM
therapy
has
been
attributed
several
extrinsic
intrinsic
factors
which
affect
dynamics
tumor
evolution
physiology
thus
creating
clinical
challenges.
Tumor-intrinsic
such
as
heterogeneity,
hypermutation,
altered
metabolomics
oncologically
activated
alternative
splicing
pathways
change
landscape
facilitate
failure
progression.
Moreover,
tumor-extrinsic
hypoxia
an
immune-suppressive
microenvironment
(TME)
are
chief
causes
immunotherapy
in
GBM.
Amid
success
other
cancers,
occurred
a
model
resistance,
focusing
current
efforts
on
not
only
alleviating
immunotolerance
but
also
evading
escape
mechanisms
cells
therapy,
caused
by
inter-
intra-tumoral
heterogeneity.
Here
we
review
various
GBM,
continuously
evolving
well
complex
TME,
cumulatively
contribute
malignancy
failure;
attempt
understand
identify
effective
therapies
for
recurrent