Pegylated Graphene Oxide For 4′‐Fluorouridine Delivery: An Ab Initio Approach to Antiviral Therapy
Advanced Theory and Simulations,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Dec. 26, 2024
Abstract
Effective
antiviral
drug
delivery
systems,
such
as
for
4′‐Fluorouridine
(4′‐FlU),
are
crucial
addressing
viral
infections
like
COVID‐19.
This
study
used
ab‐initio
analysis
to
examine
interactions
between
4′‐FlU
and
graphene
oxide
(GO)‐based
carriers,
with
without
polyethylene
glycol
(PEG)
functionalization,
across
various
physiological
conditions.
Non‐PEGylated
GO
showed
strong
gas‐phase
binding
(−103.36
kcal
mol
−1
),
supporting
systemic
stability,
while
PEGylation
reduced
aqueous‐phase
(−33.72
enhancing
biocompatibility
circulation.
Adsorption
energies
were
significant
in
acidic
alkaline
environments,
intensifying
(−118.42
).
Charge
transfer
dynamics,
influenced
by
pH
PEGylation,
revealed
enhanced
stability
under
conditions,
suitable
tumor
microenvironments.
Hydrogen
bonding
stabilized
GO‐drug
complexes,
ensuring
prolonged
release.
PEGylated
excelled
especially
delivery,
confirmed
miscibility
studies
controlled
release
kinetics.
Thermodynamic
quantum
chemical
analyses
highlighted
environmental
factors
optimizing
reactivity.
GO/PEG‐4′‐FlU
is
ideal
localized
tumors,
GO/4′‐FlU
supports
requiring
broader
dispersion.
research
lays
the
groundwork
nanotechnology‐based
strategies
design
of
adaptable
systems
both
applications.
Language: Английский
When conventional approach in toxicity assays falls short for nanomedicines: a case study with nanoemulsions
Drug Delivery and Translational Research,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 8, 2025
Abstract
The
aim
of
this
study
was
to
assess
the
critical
quality
attributes
parenteral
nanoemulsion
formulations
by
measuring
several
physicochemical
parameters
and
linking
them
their
in
vitro
performance,
illustrating
how
simplistic
routinely
used
approaches
are
insufficient
for
understanding
a
potential
nanomedicine.
Physicochemical
characterization
should
encompass
size
distribution
through
at
least
two
orthogonal
techniques,
such
as
dynamic
light
scattering
(DLS)
electron
microscopy,
with
added
value
from
analytical
ultracentrifugation.
In
toxicity
assessment
performed
using
three
different
assays
determine
mitochondrial
activity
(WST-1),
membrane
integrity
(lactate
dehydrogenase
release
(LDH)
assay),
cell
viability
(propidium
iodide
(PI)
staining).
Special
focus
placed
on
estimating
appropriate
incubation
times
relevant
results
biological
investigations.
All
had
an
average
diameter
around
100
nm.
Conclusions
regarding
safety
were
assay-dependent:
LDH
PI-based
showed
good
correlation,
while
WST-1
assay
indicated
that
non-PEGylated
formulation
altered
more
significantly
compared
PEGylated
ones.
underlined
selection
cytotoxicity
be
based
possible
mechanism
cellular
perturbation.
Alternatively,
aspects
tested.
Additionally,
there
is
need
well-designed
controls
overcome
nanoparticle
effects
avoid
potentially
false
high
results,
which
demonstrated.
Combining
orthogonal,
standardized
manner
initial
step
reliable
preclinical
nanomedicines
suggested.
This
represents
key
aspect
new
methodologies
nanomedicine
characterization.
Graphical
abstract
Language: Английский
Optimal size and PEG coating of gold nanoparticles for prolonged blood circulation: a statistical analysis of published data
Dmitry Nevozhay,
No information about this author
Ronald A. Rauch,
No information about this author
Zhongya Wang
No information about this author
et al.
Nanoscale Advances,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 1, 2025
A
statistical
meta-analysis
of
gold
nanoparticles
reveals
non-linear
interactions.
The
optimal
design
(diameter
≤
40
nm
and
PEG
≥
5
kDa)
maximizes
blood
circulation,
providing
evidence-based
guidelines
for
enhanced
nanoparticle
in
biomedicine.
Language: Английский
Biodistribution of 89Zr-Radiolabeled Nanoassemblies for Monoclonal Antibody Delivery Revealed through In Vivo PET Imaging
ACS Omega,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 28, 2025
Despite
the
outstanding
performance
of
monoclonal
antibodies
(mAbs)
in
clinic,
their
full
potential
has
been
hindered
due
to
inability
cross
cell
membranes
and
therefore
reach
intracellular
targets.
The
use
nanotechnology
deliver
mAbs
domains
highlighted
as
a
strategy
with
high
potential.
Working
toward
this
goal,
we
have
recently
developed
validated
palmitoyl
hyaluronate
(HAC16)-based
nanoassemblies
(HANAs),
novel
technology
for
delivery
Kirsten
Rat
Sarcoma
Virus
(KRAS)-mutated
tumors,
one
most
prevalent
challenging
oncoprotein.
success,
pharmacokinetics
biodistribution
these
vehicles
are
still
unknown
chemical
complexity,
challenge
common
large
proportion
drug
nanomedicines.
To
support
further
development
clinical
translation,
present
an
efficient
radiolabeling
approach
positron
emitter
zirconium-89
(89Zr)
vivo
evaluation
HANAs
by
whole-body
PET
imaging.
Additionally,
assessed
impact
PEGylation
size
modulation
on
profile
using
89Zr-radiolabeled
PEGylated
non-PEGylated
HANAs.
Our
imaging
results
demonstrated
that
significantly
modify
89Zr-mAb.
Furthermore,
established
can
be
conveniently
modulated
introducing
PEG
polymers
surface,
facilitating
customization
cancer
applications.
This
versatile
provides
facile
complex
nanoformulations
loaded
mAbs,
quantitative
manner
sensitivity.
Language: Английский
Innovative microfluidic model for investigating the intestinal mucus barrier: numerical and experimental perspectives
Drug Delivery and Translational Research,
Journal Year:
2025,
Volume and Issue:
unknown
Published: March 6, 2025
The
intestinal
mucus
layer
serves
as
a
critical
first
line
of
defense
against
external
agents,
functioning
barrier
to
the
absorption
drugs,
food,
and
pathogens.
While
numerous
in
vitro
studies
have
explored
role
preventing
particle
penetration,
effects
flowing
luminal
material,
dislodging
because
induced
shear
rate
by
lumen
material
interfacial
phenomena
remain
poorly
understood.
This
study
introduces
microfluidic
approach
simulate
interaction
between
layer.
successfully
measures
both
penetration
into
dislodgement
material.
A
biosimilar
model
(BSM)
Hank's
Balanced
Salt
Solution
(HBSS)
were
employed
mimics
human
fluid,
respectively.
To
investigate
effect
viscosity
on
pattern,
two
variants
used:
BSM-1,
representing
low-viscosity
model,
BSM-2,
high-viscosity
model.
velocity
fields
extracted
tracking
fluorescent
particles.
results
revealed
significant
differences
BSM-1
attributed
their
rheological
properties.
These
findings
further
confirmed
through
an
assessment
viscoelastic
properties
BSM
models.
utilized
COMSOL
Multiphysics
for
numerical
simulations,
predicting
experimental
outcomes
solving
fluid
flow
equations.
Physicochemical
characterizations
HBSS
performed
link
with
including
sweep
tests,
application
power-law
viscosity,
measurements
density
wettability.
proposes
platform
examining
low-
offer
valuable
insights
barrier's
response
stress.
validated
physicochemical
provide
foundation
future
rates
more
complex
geometries
diverse
conditions.
Language: Английский
Nanotechnology-based drug delivery for breast cancer treatment: Current applications and future directions
European Journal of Medicinal Chemistry Reports,
Journal Year:
2025,
Volume and Issue:
unknown, P. 100268 - 100268
Published: April 1, 2025
Language: Английский
PEGylation-Dependent Cell Uptake of Lipid Nanoparticles Revealed by Spatiotemporal Correlation Spectroscopy
Luca Digiacomo,
No information about this author
Serena Renzi,
No information about this author
Andrea Pirrottina
No information about this author
et al.
ACS Pharmacology & Translational Science,
Journal Year:
2024,
Volume and Issue:
7(10), P. 3004 - 3010
Published: Sept. 5, 2024
Polyethylene
glycol
(PEG)
is
a
common
surface
modification
for
lipid
nanoparticles
(LNPs)
to
improve
their
stability
and
in
vivo
circulation
time.
However,
the
impact
of
PEGylation
on
LNP
cellular
uptake
remains
poorly
understood.
To
tackle
this
issue,
we
systematically
compared
plain
PEGylated
LNPs
by
combining
dynamic
light
scattering,
electrophoretic
synchrotron
small-angle
X-ray
scattering
(SAXS)
that
unveils
striking
similarity
size
core
structure
but
significant
reduction
charge.
Upon
administration
human
embryonic
kidney
(HEK
293)
cells,
were
internalized
through
different
endocytic
routes,
as
revealed
spatiotemporal
correlation
spectroscopy.
An
imaging-derived
mean
square
displacement
(iMSD)
analysis
shows
exhibit
significantly
stronger
preference
caveolae-mediated
endocytosis
(CAV)
clathrin-mediated
(CME)
pathways
LNPs,
with
these
latter
being
better
tailored
MCR-dependent
internalization
trafficking.
This
suggests
PEG
plays
crucial
role
directing
toward
specific
routes.
Further
studies
should
explore
how
PEG-mediated
impacts
intracellular
trafficking
ultimately
translates
therapeutic
efficacy,
guiding
design
next-generation
delivery
systems.
Language: Английский
Exploring Micelles and Nanospheres as Delivery Systems for Phenothiazine Derivatives in Cancer Therapy
Pharmaceutics,
Journal Year:
2024,
Volume and Issue:
16(12), P. 1597 - 1597
Published: Dec. 16, 2024
Objectives:
Cancer
remains
one
of
the
leading
causes
death
worldwide,
and
thus,
there
is
a
need
for
development
innovative
more
effective
treatment
strategies.
The
aim
study
was
to
evaluate
two
types
nanoparticles—nanospheres
micelles—obtained
from
PLA-based
polymers
discover
their
potential
delivering
four
phenothiazine
derivatives.
Methods:
morphology,
drug-loading
properties,
cytocompatibility,
hemolytic
properties
anticancer
activity
were
analyzed.
Results:
micelles
exhibited
significantly
higher
release
process
cytotoxic
against
cancer
cells
compared
nanospheres.
containing
5-methyl-12H-quino[3,4-b][1,4]benzothiazinium
chloride
with
an
OH
group
as
substituent
in
10-position
quinobenzothiazine
ring
showed
highest
content,
most
efficient
drug
release,
lowest
significant
effect
HeLa
cells.
Conclusions:
conducted
enabled
delivery
system
new
compound
that
choice
carrier
has
crucial
on
its
Language: Английский
Insulin for oral bone tissue engineering: a review on innovations in targeted insulin-loaded nanocarrier scaffold
Journal of drug targeting,
Journal Year:
2024,
Volume and Issue:
unknown, P. 1 - 31
Published: Dec. 21, 2024
The
occurrence
of
oral
bone
tissue
degeneration
and
defects
by
osteoporosis,
tooth
extraction,
obesity,
trauma,
periodontitis
are
major
challenges
for
clinicians.
Traditional
regeneration
methods
often
come
with
limitations
such
as
donor
site
morbidity,
limitation
special
shape,
inflammation,
resorption
the
implanted
bone.
treatment
oriented
biomimetic
materials
has
achieved
significant
attention
recently.
In
engineering
arena,
insulin
gained
considerable
among
all
known
biomaterials
osteogenesis
angiogenesis.
It
also
exhibits
osteogenic
angiogenic
properties
interacting
receptors
on
osteoblasts.
Insulin
influences
remodelling
both
directly
indirectly.
acts
through
PI3K/Akt
MAPK
signalling
pathways
indirectly
modulating
RANK/RANKL/OPG
pathway,
which
helps
reduce
resorption.
current
review
reports
role
in
cavity
form
scaffolds
nanomaterials.
Different
delivery
systems,
utilising
nanomaterials
functionalised
polymeric
have
been
explored
regeneration.
put
forward
a
theoretical
basis
future
research
composite
Language: Английский