Small Methods,
Journal Year:
2023,
Volume and Issue:
8(3)
Published: Oct. 31, 2023
Abstract
The
development
of
nucleic
acid‐based
drugs
holds
great
promise
for
therapeutic
applications,
but
their
effective
delivery
into
cells
is
hindered
by
poor
cellular
membrane
permeability
and
inherent
instability.
To
overcome
these
challenges,
vehicles
are
required
to
protect
deliver
acids
efficiently.
Silica
nanoparticles
(SiNPs)
have
emerged
as
promising
nanovectors
recently
bioregulators
gene
due
unique
advantages.
In
this
review,
a
summary
recent
advancements
in
the
design
SiNPs
acid
applications
provided,
mainly
according
specific
type
acids.
First,
structural
characteristics
working
mechanisms
various
types
introduced
classified
functions.
Subsequently,
each
type,
use
enhancing
performance
biomedical
summarized.
tailored
selected
will
be
highlighted
considering
Lastly,
limitations
current
research
personal
perspectives
on
future
directions
field
presented.
It
expected
opportune
review
provide
insights
burgeoning
area
next‐generation
SiNP‐based
systems.
Developmental
and
epileptic
encephalopathies
(DEEs)
comprise
a
complex
spectrum
of
neurological
disorders
characterized
by
neurodevelopmental
delay
early-onset
seizures
primarily
caused
diverse
genetic
mutations.
Traditional
treatments
have
largely
been
symptomatic,
focusing
on
seizure
control
without
addressing
the
underlying
causes.
The
advent
gene
therapy,
particularly
through
antisense
oligonucleotides
(ASOs),
offers
promising
avenue
toward
targeted
therapeutic
interventions.
ASOs
virtue
their
ability
to
modulate
expression
at
mRNA
level
represent
sophisticated
approach
counteract
effects
pathogenic
This
review
delves
into
recent
advancements
in
ASO
technology,
highlighting
its
application
preclinical
clinical
settings
for
DEEs.
We
present
evidence
efficacy
ameliorating
disease
phenotypes
vitro
vivo,
alongside
outcomes
from
ongoing
trials.
landscape
DEEs
is
cusp
significant
transformation,
underscored
potential
offer
precise,
personalized,
that
extend
beyond
symptomatic
relief
potentially
rectify
underpinnings
these
disorders.
International Journal of Molecular Sciences,
Journal Year:
2024,
Volume and Issue:
25(2), P. 761 - 761
Published: Jan. 7, 2024
Antisense
oligonucleotides
(ASOs)
represent
an
emerging
therapeutic
platform
for
targeting
genetic
diseases
by
influencing
various
aspects
of
(pre-)mRNA
biology,
such
as
splicing,
stability,
and
translation.
In
this
study,
we
investigated
the
potential
modulating
splicing
pattern
in
recessive
dystrophic
epidermolysis
bullosa
(RDEB)
patient
cells
carrying
a
frequent
genomic
variant
(c.425A
>
G)
that
disrupts
COL7A1
gene
using
short
2′-O-(2-Methoxyethyl)
oligoribo-nucleotides
(2′-MOE
ASOs).
COL7A1-encoded
type
VII
collagen
(C7)
forms
anchoring
fibrils
within
skin
are
essential
attachment
epidermis
to
underlying
dermis.
As
such,
variants
leading
functionally
impaired
or
absent
C7
manifest
form
extensive
blistering
wounding.
The
severity
disease
warrants
development
novel
therapies
patients.
c.425A
G
at
exon
3/intron
3
junction
lowers
efficiency
junction,
resulting
non-functional
transcripts.
However,
found
correct
still
occurs,
albeit
very
low
level,
highlighting
opportunity
intervention
reaction.
We
therefore
screened
2′-MOE
ASOs
bind
along
target
region
ranging
from
intron
3/exon
4
their
ability
modulate
splicing.
identified
capable
increasing
relative
levels
correctly
spliced
transcripts
RT-PCR,
sqRT-PCR,
ddPCR.
Furthermore,
RDEB-derived
equivalents
treated
with
one
most
promising
exhibited
increase
full-length
expression
its
accurate
deposition
basement
membrane
zone
(BMZ).
Small,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 10, 2025
Abstract
Oligonucleotide
therapeutics,
including
antisense
oligonucleotides
and
small
interfering
RNA,
offer
promising
avenues
for
modulating
the
expression
of
disease‐associated
proteins.
However,
challenges
such
as
nuclease
degradation,
poor
cellular
uptake,
unspecific
targeting
hinder
their
application.
To
overcome
these
obstacles,
spherical
nucleic
acids
have
emerged
versatile
tools
acid
delivery
in
biomedical
applications.
Our
laboratory
has
introduced
sequence‐defined
DNA
amphiphiles
which
self‐assemble
aqueous
solutions.
Despite
advantages,
self‐assembled
SNAs
can
be
inherently
fragile
due
to
reliance
on
non‐covalent
interactions
fall
apart
biologically
relevant
conditions,
specifically
by
interaction
with
serum
Herein,
this
challenge
is
addressed
introducing
two
methods
covalent
crosslinking
via
UV
irradiation.
Thymine
photodimerization
or
disulfide
at
micellar
interface
enhance
SNA
stability
against
human
albumin
binding.
This
enhanced
stability,
particularly
crosslinked
SNAs,
leads
increased
uptake.
Furthermore,
results
sustained
activity
accessibility
release
therapeutic
acid,
along
improvement
unaided
gene
silencing.
The
findings
demonstrate
efficient
stabilization
through
crosslinking,
influencing
release,
ultimately,
silencing
activity.
These
studies
further
optimization
exploration
pre‐clinical,
vivo
studies.
PLoS ONE,
Journal Year:
2025,
Volume and Issue:
20(2), P. e0317559 - e0317559
Published: Feb. 13, 2025
Colorectal
cancer
(CRC)
poses
a
global
health
challenge,
with
current
treatments
often
harming
both
cancerous
and
normal
cells.
To
improve
efficacy,
multifunctional
drug
delivery
platform
has
been
developed,
integrating
bioactive
materials,
anticancer
agents,
targeted
recognition
ligands
into
single
molecule.
This
study
aimed
to
create
molecular
hybrid
(MH)
containing
doxorubicin,
AS1411
aptamer,
T9/U4
ASO
regulate
SW480
cell
proliferation.
The
aptamer
targets
nucleolin,
overexpressed
on
membranes,
while
inhibits
human
telomerase
RNA
activity,
further
hindering
AS-T9/U4_MH
was
synthesized
via
oligonucleotide
hybridization,
followed
by
doxorubicin
loading
evaluation
of
its
impact
Binding
capability
this
MH
verified
using
fluorescence
microscopy
flow
cytometry,
demonstrating
specific
cells
due
nucleolin
availability
the
surface.
These
findings
were
corroborated
cytometry.
exhibited
anti-proliferative
effects,
doxorubicin-loaded
system
encapsulation
reduced
toxicity.
Moreover,
presence
Dox
within
led
notable
reduction
in
hTERT
vimentin
expression
Additionally,
examination
apoptotic
pathways
unveiled
marked
decrease
Bcl-2
simultaneous
increase
Bax
treated
Dox-loaded
AS-T9/U4_MH,
indicating
promoting
apoptosis.
shows
promise
as
for
chemotherapeutic
drugs
materials
therapy.
Cells,
Journal Year:
2025,
Volume and Issue:
14(10), P. 697 - 697
Published: May 12, 2025
Oligonucleotides
(ODNs)
such
as
siRNA,
saRNA,
and
miRNA
regulate
gene
expression
through
a
variety
of
molecular
mechanisms
show
unique
potential
in
the
treatment
genetic
diseases
rare
diseases,
but
their
clinical
application
is
still
limited
by
efficiency
delivery
system,
especially
problem
insufficient
targeting
extrahepatic
tissues.
As
homologous
nucleic
acid
molecules,
aptamers
have
become
key
tool
to
improve
targeted
ODNs.
Aptamer–ODN
chimeras
can
not
only
bind
multiple
proteins
on
cell
surface
with
high
specificity
selectivity,
they
also
internalize
into
cells.
Furthermore,
outperform
traditional
systems
terms
cost-effectiveness
chemical
modification
flexibility.
This
review
systematically
summarizes
origin
progress
aptamer–ODN
chimera
therapy,
discusses
some
innovative
design
strategies,
proposes
views
future
direction
aptamer-ODN
chimeras.