Macromolecular Rapid Communications,
Год журнала:
2025,
Номер
unknown
Опубликована: Апрель 4, 2025
Targeted
protein
degradation
(TPD)
using
the
proteolysis-targeting
chimeras
(PROTACs)
is
emerging
as
a
revolutionary
technology,
offering
potential
strategy
for
cancer
treatment
by
inducing
of
overexpressed
oncogenic
proteins
in
tumors.
PROTACs
function
recruiting
E3
ligases
and
utilizing
ubiquitin-proteasome
pathway
(UPS)
to
catalyze
target
proteins.
Compared
traditional
small
molecules
inhibitors,
exhibit
enhanced
selectivity,
ability
overcome
drug
resistance,
traditionally
deemed
"undruggable".
However,
poor
water
solubility
low
cellular
permeability
significantly
limit
their
pharmacokinetic
properties,
while
systemic
toxicity
may
hinder
clinical
application.
To
address
these
limitations,
strategies
that
integrate
with
delivery
systems
are
gaining
attention.
This
review
summarizes
latest
advancements
various
enhance
vivo
efficacy
reduce
off-target
effects
PROTACs,
including
prototype
nanoparticles,
covalent
modification-based
prodrug
strategies,
innovative
multi-headed
designs,
microneedle
systems,
discussing
design
principles
associated
challenges.
The
combination
potent
multifunctional
holds
promise
accelerating
translation
improving
therapeutic
treatment.
Journal of the American Chemical Society,
Год журнала:
2023,
Номер
145(24), С. 13147 - 13160
Опубликована: Июнь 1, 2023
The
immunotherapy
of
deep
solid
tumors
in
the
human
body,
such
as
liver
cancer,
still
faces
great
challenges,
especially
inactivation
and
insufficient
infiltration
immune
cells
tumor
microenvironment.
Natural
killer
(NK)
are
gaining
ever-increasing
attention
owing
to
their
unique
features
expected
play
an
important
role
cancer
immunotherapy.
However,
NK
severely
inactivated
due
highly
immunosuppressive
intratumor
microenvironment,
resulting
poor
clinical
therapeutic
efficacy.
Herein,
we
propose
a
mild
magnetocaloric
regulation
approach
using
magnetogenetic
nanoplatform
MNPs@PEI-FA/pDNA
(MPFD),
which
is
synthesized
by
loading
heat-inducible
plasmid
DNA
(HSP70-IL-2-EGFP)
on
polyethyleneimine
(PEI)-
folic
acid
(FA)-modified
ZnCoFe2O4@ZnMnFe2O4
magnetic
nanoparticles
(MNPs)
promote
proliferation
activation
tumor-infiltrating
under
manipulation
without
limitation
penetration
depth
for
orthotopic
magnetothermally
responsive
MPFD
serves
magnetism-heat
nanotransducer
induce
gene
transcription
IL-2
cytokine
cell
activation.
Both
vitro
vivo
results
demonstrate
that
remote
(∼40
°C)
initiates
HSP70
promoter
trigger
overexpression
subsequent
secretion,
leading
situ
expansion
through
IL-2/IL-2
receptor
(IL-2R)
pathways
prominent
inhibition.
This
work
not
only
evidences
potential
but
also
reveals
underlying
mechanism
treatment
nanoplatform.
ACS Nano,
Год журнала:
2023,
Номер
17(11), С. 10792 - 10805
Опубликована: Июнь 2, 2023
Natural
melanin
nanoparticles
(MNPs)
have
demonstrated
a
potential
for
eliciting
antitumor
immune
responses
through
inducing
immunogenic
cell
death
(ICD);
however,
the
tumor
microenvironment
(TME)
has
been
shown
to
inhibit
T
cell-mediated
immunity.
To
address
this
challenge,
we
designed
TME-responsive
biodegradable
melanin/MnOx
nanohybrids
via
biomineralization
process.
Under
near-infrared
(NIR)
light
irradiation,
photothermal
property
of
triggers
ICD
and
release
tumor-associated
antigens
(TAAs),
while
Mn2+
TAAs
induce
dendritic
(DC)
maturation
provoke
responses.
Furthermore,
immunoregulatory
properties
themselves
are
exploited
reshape
immunosuppressive
TME
downregulate
PD-L1
alleviation
hypoxic
acidic
TME.
Although
MNPs
demonstrate
higher
killing
efficiency
than
in
vitro
due
their
superior
effect,
exhibit
significantly
enhanced
antimetastatic
effects
vivo,
benefiting
from
ability
reverse
immunosuppression
DC
maturation.
Transcriptomics
analysis
confirmed
successful
activation
This
work
presents
promising
approach
immunomodulation-enhanced
cancer
therapy
intrinsic
nanohybrids.
Frontiers in Immunology,
Год журнала:
2023,
Номер
14
Опубликована: Янв. 17, 2023
The
tumor
microenvironment
(TME)
is
the
surrounding
environment,
which
critical
for
development
and
progression.
TME
also
involved
in
clinical
intervention
treatment
outcomes.
Modulation
of
useful
improving
therapy
strategies.
PD-L1
protein
on
cells
interacts
with
PD-1
T
cells,
contributing
to
cell
dysfunction
exhaustion,
blockage
immune
response.
Evidence
has
demonstrated
that
expression
PD-1/PD-L1
associated
response
anti-PD-1/PD-L1
cancer
patients.
It
important
discuss
regulatory
machinery
how
finely
regulated
cells.
In
recent
years,
studies
have
was
governed
by
various
E3
ubiquitin
ligases
TME,
resistance
human
cancers.
this
review,
we
will
role
molecular
mechanisms
ligases-mediated
regulation
TME.
Moreover,
describe
ligases-involved
alters
efficacy.
Altogether,
targeting
control
levels
could
be
a
potential
strategy
potentiate
immunotherapeutic
effects
Proteolysis
targeting
chimera
(PROTAC)
technology
has
become
a
powerful
strategy
in
drug
discovery,
especially
for
undruggable
targets/proteins.
A
typical
PROTAC
degrader
consists
of
three
components:
small
molecule
that
binds
to
target
protein,
an
E3
ligase
ligand
(consisting
and
its
recruiter),
chemical
linker
hooks
first
two
components
together.
In
the
past
20
years,
we
have
witnessed
advancement
multiple
degraders
into
clinical
trials
anticancer
therapies.
However,
one
major
challenges
is
only
very
limited
number
recruiters
are
currently
available
as
targeted
protein
degradation
(TPD),
although
human
genome
encodes
more
than
600
ligases.
Thus,
there
urgent
need
identify
additional
effective
TPD
applications.
this
review,
summarized
existing
RING-type
ubiquitin
their
act
ligands
application
discovery.
We
believe
review
could
serve
reference
future
development
efficient
cancer
discovery
development.
Advanced Materials,
Год журнала:
2024,
Номер
36(38)
Опубликована: Июнь 20, 2024
Abstract
While
proteolysis‐targeting
chimeras
(PROTACs)
hold
great
potential
for
persistently
reprogramming
the
immunosuppressive
tumor
microenvironment
via
targeted
protein
degradation,
precisely
activating
them
in
tissues
and
preventing
uncontrolled
proteolysis
at
off‐target
sites
remain
challenging.
Herein,
a
light‐triggered
PROTAC
nanoassembly
(LPN)
photodynamic
indoleamine
2,3‐dioxygenase
(IDO)
is
reported.
The
LPN
derived
from
self‐assembly
of
prodrug
conjugates,
which
comprise
PROTAC,
cathepsin
B‐specific
cleavable
peptide
linker,
photosensitizer,
without
any
additional
carrier
materials.
In
colon
models,
intravenously
injected
LPNs
initially
silence
activity
PROTACs
accumulate
significantly
due
to
an
enhanced
permeability
retention
effect.
Subsequently,
cancer
biomarker
B
begins
trigger
release
active
through
enzymatic
cleavage
linkers.
Upon
light
irradiation,
cells
undergo
immunogenic
cell
death
induced
by
therapy
promote
activation
effector
T
cells,
while
continuous
IDO
degradation
simultaneously
blocks
tryptophan
metabolite‐regulated
regulatory‐T‐cell‐mediated
immunosuppression.
Such
LPN‐mediated
combinatorial
effectively
inhibits
growth,
metastasis,
recurrence.
Collectively,
this
study
presents
promising
nanomedicine,
designed
synergize
with
other
immunotherapeutic
modalities,
more
effective
safer
immunotherapy.
Signal Transduction and Targeted Therapy,
Год журнала:
2024,
Номер
9(1)
Опубликована: Окт. 18, 2024
PROteolysis
TArgeting
Chimeras
(PROTACs)
have
been
considered
the
next
blockbuster
therapies.
However,
due
to
their
inherent
limitations,
efficacy
of
PROTACs
is
frequently
impaired
by
limited
tissue
penetration
and
particularly
insufficient
cellular
internalization
into
action
sites.
Herein,
based
on
ultra-pH-sensitive
enzyme-sensitive
nanotechnology,
a
type
polymer
PROTAC
conjugated
pH/cathepsin
B
sequential
responsive
nanoparticles
(PSRNs)
are
deliberately
designed,
following
construction
for
Cyclin-dependent
kinase
4
6
(CDK4/6).
Colorectal
cancer
(CRC)
which
hardly
responds
many
treatments
even
immune
checkpoint
blockades
was
selected
as
tumor
model
in
this
study.
As
result,
PSRNs
were
found
maintain
nanostructure
(40
nm)
circulation
efficiently
accumulated
tumors
via
enhanced
permeation
retention
effect.
Then,
they
dissociated
unimers
(<10
response
an
acidic
microenvironment,
facilitating
internalization.
Eventually,
CDK4/6
degrading
released
intracellularly
cleavage
cathepsin
B.
Importantly,
led
degradation
target
protein
vitro
vivo.
The
also
augmented
blockades,
through
upregulation
programmed
cell
death-ligand
1
(PD-L1)
expression
cells
suppression
regulatory
T
proliferation
microenvironment.
By
combination
with
α-PD-1,
anti-tumor
outcome
well
achieved
CT26
model.
Overall,
our
study
verifies
significance
precise
intracellular
delivery
introduces
promising
therapeutic
strategy
targeted
treatment
CRC.