Frontiers in Cellular and Infection Microbiology,
Journal Year:
2024,
Volume and Issue:
14
Published: Jan. 31, 2024
Viruses,
despite
their
simple
structural
composition,
engage
in
intricate
and
complex
interactions
with
hosts
due
to
parasitic
nature.
A
notable
demonstration
of
viral
behavior
lies
exploitation
lysosomes,
specialized
organelles
responsible
for
the
breakdown
biomolecules
clearance
foreign
substances,
bolster
own
replication.
The
man-nose-6-phosphate
(M6P)
pathway,
crucial
facilitating
proper
transport
hydrolases
into
lysosomes
promoting
lysosome
maturation,
is
frequently
exploited
manipulation
support
Recently,
discovery
lysosomal
enzyme
trafficking
factor
(LYSET)
as
a
pivotal
regulator
within
M6P
pathway
has
introduced
fresh
perspective
on
interplay
between
entry
host
factors.
This
groundbreaking
revelation
illuminates
unexplored
dimensions
these
interactions.
In
this
review,
we
endeavor
provide
thorough
overview
its
factors
during
infection.
By
consolidating
current
understanding
field,
our
objective
establish
valuable
reference
development
antiviral
drugs
that
selectively
target
pathway.
PLoS Pathogens,
Journal Year:
2024,
Volume and Issue:
20(2), P. e1011981 - e1011981
Published: Feb. 14, 2024
Lysosomes
are
acidic
organelles
that
mediate
the
degradation
and
recycling
of
cellular
waste
materials.
Damage
to
lysosomes
can
cause
lysosomal
membrane
permeabilization
(LMP)
trigger
different
types
cell
death,
including
apoptosis.
Newcastle
disease
virus
(NDV)
naturally
infect
most
birds.
Additionally,
it
serves
as
a
promising
oncolytic
known
for
its
effective
infection
tumor
cells
induction
intensive
apoptotic
responses.
However,
involvement
in
NDV-induced
apoptosis
remains
poorly
understood.
Here,
we
demonstrate
NDV
profoundly
triggers
LMP,
leading
translocation
cathepsin
B
D
subsequent
mitochondria-dependent
various
avian
cells.
Notably,
released
exacerbate
LMP
by
inducing
generation
reactive
oxygen
species.
uncover
viral
Hemagglutinin
neuraminidase
(HN)
protein
induces
deglycosylation
lysosome-associated
1
(LAMP1)
LAMP2
dependent
on
sialidase
activity,
which
finally
contributes
Overall,
our
findings
elucidate
role
provide
novel
insights
into
function
HN
during
innovative
approaches
development
NDV-based
agents.
Animal Diseases,
Journal Year:
2023,
Volume and Issue:
3(1)
Published: April 25, 2023
Abstract
The
spike
protein
(S)
of
SARS-CoV-2
is
responsible
for
viral
attachment
and
entry,
thus
a
major
factor
host
susceptibility,
tissue
tropism,
virulence
pathogenicity.
S
divided
with
S1
S2
region,
the
contains
receptor-binding
domain
(RBD),
while
hydrophobic
fusion
entry
into
cell.
Numerous
proteases
have
been
implicated
in
activation
through
various
cleavage
sites.
In
this
article,
we
review
including
furin,
trypsin,
transmembrane
protease
serine
2
(TMPRSS2)
cathepsins
S.
Many
betacoronaviruses
polybasic
residues
at
S1/S2
site
which
subjected
to
by
furin.
facilitates
more
assessable
RBD
receptor
ACE2,
binding
triggers
further
conformational
changes
exposure
S2’
such
as
type
II
(TTPRs)
TMPRSS2.
presence
TMPRSS2
on
target
cells,
can
utilize
direct
route
envelope
cellular
membrane.
absence
TMPRSS2,
enter
cells
via
endosomes
where
multiple
cleave
successful
entry.
Additional
involved
were
discussed.
This
article
also
includes
roles
3C-like
inhibitors
inhibitory
activity
against
cathepsin
L
SARS-CoV-2,
discussed
dual
virus
replication.
ACS Pharmacology & Translational Science,
Journal Year:
2024,
Volume and Issue:
7(2), P. 493 - 514
Published: Jan. 19, 2024
Cathepsins
(Cats)
are
proteases
that
mediate
the
successful
entry
of
SARS-CoV-2
into
host
cells.
We
designed
and
synthesized
a
tailored
series
21
peptidomimetics
evaluated
their
inhibitory
activity
against
human
cathepsins
L,
B,
S.
Structural
diversity
was
realized
by
combinations
different
C-terminal
warhead
functions
N-terminal
capping
groups,
while
central
Leu-Phe
fragment
maintained.
Several
compounds
were
identified
as
promising
cathepsin
L
S
inhibitors
with
International Journal of Molecular Sciences,
Journal Year:
2024,
Volume and Issue:
25(13), P. 7209 - 7209
Published: June 29, 2024
Aprotinin
is
a
broad-spectrum
inhibitor
of
human
proteases
that
has
been
approved
for
the
treatment
bleeding
in
single
coronary
artery
bypass
surgery
because
its
potent
antifibrinolytic
actions.
Following
outbreak
COVID-19
pandemic,
there
was
an
urgent
need
to
find
new
antiviral
drugs.
good
candidate
therapeutic
repositioning
as
drug
and
treating
symptomatic
processes
characterise
viral
respiratory
diseases,
including
COVID-19.
This
due
strong
pharmacological
ability
inhibit
plethora
host
used
by
viruses
their
infective
mechanisms.
The
allow
cleavage
conformational
change
proteins
make
up
capsid,
thus
enable
them
anchor
themselves
recognition
target
epithelial
cell.
In
addition,
activation
these
initiates
inflammatory
process
triggers
infection.
attraction
not
only
pharmacodynamic
characteristics
but
also
possibility
administration
inhalation
route,
avoiding
unwanted
systemic
effects.
This,
together
with
low
cost
(≈2
Euro/dose),
makes
it
reach
countries
lower
economic
means.
this
article,
we
will
discuss
pharmacodynamic,
pharmacokinetic,
toxicological
aprotinin
administered
route;
analyse
main
advances
our
knowledge
medication;
future
directions
should
be
taken
research
order
reposition
medication
therapeutics.
Aging and Disease,
Journal Year:
2024,
Volume and Issue:
unknown, P. 0 - 0
Published: Jan. 1, 2024
Alzheimer's
disease
(AD)
is
an
intricate
neurodegenerative
disorder
characterized
by
the
accumulation
of
misfolded
proteins,
including
beta-amyloid
(Aβ)
and
tau,
leading
to
cognitive
decline.
Despite
decades
research,
precise
mechanisms
underlying
its
onset
progression
remain
elusive.
Cathepsins
are
a
family
lysosomal
enzymes
that
play
vital
roles
in
cellular
processes,
protein
degradation
regulation
immune
responses.
Emerging
evidence
suggests
cathepsins
may
be
involved
AD
pathogenesis.
can
influence
activation
microglia
astrocytes,
resident
cells
brain.
However,
cathepsin
dysfunction
lead
notably
Aβ
tau.
In
addition,
dysregulated
activity
induce
exaggerated
response,
promoting
chronic
inflammation
neuronal
patients
with
AD.
By
unraveling
classification,
functions,
AD's
pathogenesis,
this
review
sheds
light
on
their
involvement
devastating
disease.
Targeting
could
promising
novel
approach
for
mitigating
pathological
processes
contribute
AD,
providing
new
avenues
treatment
prevention.
Cells,
Journal Year:
2025,
Volume and Issue:
14(2), P. 68 - 68
Published: Jan. 7, 2025
Lysosomes
are
subcellular
compartments
characterised
by
an
acidic
pH,
containing
ample
variety
of
acid
hydrolases
involved
in
the
recycling
biopolymers.
Among
these
hydrolases,
lysosomal
proteases
have
merely
been
considered
as
end-destination
responsible
for
digestion
waste
proteins,
trafficked
to
compartment
through
autophagy
and
endocytosis.
However,
recent
reports
started
unravel
specific
roles
regulation
initially
unexpected
biological
processes,
both
under
physiological
pathological
conditions.
Furthermore,
some
no
longer
restricted
compartment,
more
novel
non-canonical,
extralysosomal
targets
being
identified.
Currently,
accepted
play
key
functions
extracellular
milieu,
attached
plasma
membrane
even
cytosolic
nuclear
cell.
Under
conditions,
proteases,
activities,
linked
cell
differentiation,
gene
expression,
division.
cancer,
mostly
their
activities
cytosol
nuclei
cells.
In
this
review,
we
aim
provide
a
comprehensive
summary
our
current
knowledge
about
extralysosomal,
non-canonical
with
particular
interest
that
could
potentially
offer
new
opportunities
clinical
intervention.
Molecules,
Journal Year:
2025,
Volume and Issue:
30(5), P. 1066 - 1066
Published: Feb. 26, 2025
SARS-CoV-2,
the
pathogenic
virus
that
induces
COVID-19
disease,
contains
four
structural
proteins
in
its
virion.
The
nucleocapsid
(N)
protein
is
one
of
play
a
crucial
role
assembly
viral
RNA
into
ribonucleoprotein.
In
addition,
N
contributes
to
pathogenesis.
One
functions
attributed
triggering
cytokine
release
by
lung
epithelial
cells,
macrophages,
and
monocytes.
This
study
addresses
cellular
effects
SARS-CoV-2
on
cells
glial
origin.
We
report
upregulation
RANTES
chemokine
A172
glioblastoma
at
both
mRNA
levels
response
exposure
protein.
did
not
have
an
effect
cell
viability
migration.
Journal of Virology,
Journal Year:
2025,
Volume and Issue:
unknown
Published: March 26, 2025
ABSTRACT
In
the
life
cycle
of
a
virus,
host
cell
entry
represents
first
step
that
virus
needs
to
undertake
gain
access
interior
for
replication.
Once
attaches
itself
its
target
receptor,
it
activates
endogenous
cellular
responses
and
exploits
factors
internalization,
fusion,
genome
release.
Among
critically
contribute
viral
processes
are
cathepsins,
which
most
abundant
endo/lysosomal
proteases
with
diverse
physiological
functions.
This
review
summarizes
previous
findings
on
how
different
cathepsins
human
pathogenic
viruses,
focusing
their
specific
roles
in
both
enveloped
non-enveloped
RNA
viruses.
A
comprehensive
knowledge
functions
will
provide
valuable
insights
into
molecular
mechanisms
underlying
infections
can
be
useful
development
new
antiviral
strategies.