Virus Research,
Journal Year:
2024,
Volume and Issue:
344, P. 199353 - 199353
Published: March 20, 2024
The
emergence
of
SARS-CoV-2
variants
has
led
to
several
cases
among
children.
However,
limited
information
is
available
from
North
African
countries.
This
study
describes
the
strains
circulating
in
Tunisian
pediatric
population
during
successive
waves.
A
total
447
complete
sequences
were
obtained
individuals
aged
13
days
18
years,
between
March
2020
and
September
2022:
369
generated
this
78
ones,
GISAID,
previously
patients.
These
compared
with
354
274
ones
adults
a
global
dataset,
respectively.
variant
circulation
dynamics
predominant
investigated
period
using
maximum-likelihood
phylogenetic
analysis.
Among
studied
population,
adolescents
age
group,
comprising
55.26%
cases.
Twenty-three
lineages
identified;
seven
which
not
reported
Tunisia.
Phylogenetic
analysis
showed
close
relationship
connections
other
countries
variable
according
variants:
relationships
observed
for
Alpha,
B1.160
Omicron
variants,
while
independent
clusters
Delta
B.1.177
lineages.
findings
highlight
pivotal
role
children
virus
transmission
underscore
impact
vaccination
on
spread.
Vaccination
children,
booster
doses,
may
be
considered
better
management
future
emergences.
Vaccines,
Journal Year:
2023,
Volume and Issue:
11(3), P. 682 - 682
Published: March 17, 2023
We
are
currently
approaching
three
years
since
the
beginning
of
coronavirus
disease
2019
(COVID-19)
pandemic.
SARS-CoV-2
has
caused
extensive
disruptions
in
everyday
life,
public
health,
and
global
economy.
Thus
far,
vaccine
worked
better
than
expected
against
virus.
During
pandemic,
we
experienced
several
things,
such
as
virus
its
pathogenesis,
clinical
manifestations,
treatments;
emerging
variants;
different
vaccines;
development
processes.
This
review
describes
how
each
been
developed
approved
with
help
modern
technology.
also
discuss
critical
milestones
during
process.
Several
lessons
were
learned
from
countries
two
research,
development,
trials,
vaccination.
The
process
will
to
fight
next
International Journal of Surgery,
Journal Year:
2024,
Volume and Issue:
unknown
Published: March 19, 2024
Computer-aided
drug
design
(CADD)
is
a
technique
for
computing
ligand-receptor
interactions
and
involved
in
various
stages
of
development.
To
better
grasp
the
frontiers
hotspots
CADD,
we
conducted
review
analysis
through
bibliometrics.
Journal of Medical Virology,
Journal Year:
2025,
Volume and Issue:
97(1)
Published: Jan. 1, 2025
ABSTRACT
SARS‐CoV‐2
Envelope
(E)
protein
is
critical
in
viral
assembly,
release,
and
virulence.
E
gene
was
considered
highly
conserved
evolving
slowly.
Pan‐sarbecoviruses–conserved
regions
the
have
been
used
as
targets
for
various
RT‐PCR
assays
to
detect
SARS‐CoV‐2.
It
remains
elusive
whether
variants
of
concern
(VOCs)
accumulated
significant
mutations
that
may
affect
stability
diagnostic
assays.
Herein
we
aimed
perform
a
comprehensive
genetic
analysis
on
conservation
diversity
its
VOCs
comparison
with
other
human
coronaviruses
(HCoVs).
In
silico
20
326
HCoV
sequences
retrieved
from
GenBank
GISAID
suggests
has
multiple
pan‐HCoVs–
pan‐SARS‐CoV‐2–conserved
positions
but
accumulates
VOC
B.1.351
Omicron
strains.
Mutations
were
often
found
5′
3′
variable
regions,
whereas
central
region
conserved.
Nucleotide
changes
C109U
A114G
lead
potential
failure
first‐line
diagnostic/screening
change
C212U
concomitant
amino
acid
substitution
Pro71Leu
(i.e.,
C212U/Pro71Leu)
hallmark
mutation
variants,
while
C26U/Thr9Ile
characteristic
all
variants.
Later
subvariants,
such
XBB.1.5
EG.5,
additionally
acquired
A31G/Thr11Ala
mutation,
confirmed
by
whole
genome
sequencing
118
pediatric
cases.
Wild‐type
exhibits
cytotoxicity
cells,
Thr9Ile,
Thr11Ala,
Thr9Ile
+
or
reduces
cytotoxicity.
The
Thr11Ala
stabilizes
proteins
alters
cellular
distribution
protein,
reducing
colocalization
Golgi
body.
Altogether,
this
study
not
only
sheds
light
also
informs
improvement
development
pan‐HCoVs
screening
Vaccines,
Journal Year:
2023,
Volume and Issue:
11(3), P. 545 - 545
Published: Feb. 24, 2023
Over
the
years,
several
distinct
pathogenic
coronaviruses
have
emerged,
including
pandemic
SARS-CoV-2,
which
is
difficult
to
curtail
despite
availability
of
licensed
vaccines.
The
difficulty
in
managing
SARS-CoV-2
linked
changes
variants’
proteins,
especially
spike
protein
(SP)
used
for
viral
entry.
These
mutations,
SP,
enable
virus
evade
immune
responses
induced
by
natural
infection
or
vaccination.
However,
some
parts
SP
S1
subunit
and
S2
are
considered
conserved
among
coronaviruses.
In
this
review,
we
will
discuss
epitopes
proteins
that
been
demonstrated
various
studies
be
may
immunogenic
development
a
vaccine.
Considering
higher
conservancy
S2,
further
likely
challenges
could
limit
from
inducing
robust
promising
approaches
increase
its
immunogenicity.
International Journal of Surgery,
Journal Year:
2024,
Volume and Issue:
110(4), P. 2498 - 2501
Published: Jan. 11, 2024
The
SARS-CoV-2
subvariant
BA.2.86
‘Pirola’,
first
identified
in
Denmark
August
2023,
has
manifested
with
a
significantly
mutated
spike
protein
profile,
suggesting
heightened
ability
to
evade
vaccine-induced
and
infection-induced
antibodies.
This
article
outlines
the
epidemiological
spread,
immune
response
implications,
global
responses
BA.2.86.
Preliminary
observations
indicate
community
transmissions
of
subvariant,
even
among
those
previously
infected
or
vaccinated.
Notably,
infection
shown
potential
amplify
antibody
responses.
variant’s
emergence
evoked
memories
Omicron
rise
late
2021,
though
immunity
levels
might
modulate
impact
differently.
Continuous
genomic
surveillance,
coupled
integrated
diagnostic
strategies,
proves
crucial
early
detection
management.
reaffirms
unpredictable
nature
COVID-19
pandemic,
emphasizing
need
for
ongoing
research,
adaptability,
collaboration.
Heliyon,
Journal Year:
2024,
Volume and Issue:
10(9), P. e30208 - e30208
Published: April 25, 2024
The
rapid
emergence
of
multiple
strains
Severe
Acute
Respiratory
Syndrome
Coronavirus-2
(SARS-CoV-2)
has
sparked
profound
concerns
regarding
the
ongoing
evolution
virus
and
its
potential
impact
on
global
health.
Classified
by
World
Health
Organization
(WHO)
as
variants
concern
(VOC),
these
exhibit
heightened
transmissibility
pathogenicity,
posing
significant
challenges
to
existing
vaccine
strategies.
Despite
widespread
vaccination
efforts,
continual
SARS-CoV-2
presents
a
formidable
obstacle
achieving
herd
immunity.
Of
particular
is
coronavirus
spike
(S)
protein,
pivotal
viral
surface
protein
crucial
for
host
cell
entry
infectivity.
Mutations
within
S
have
been
shown
enhance
confer
resistance
antibody-mediated
neutralization,
undermining
efficacy
traditional
platforms.
Moreover,
undergoes
molecular
under
selective
immune
pressure,
leading
diverse
with
distinct
mutation
profiles.
This
review
underscores
urgent
need
vigilance
adaptation
in
development
efforts
combat
evolving
landscape
mutations
ensure
long-term
effectiveness
immunization
campaigns.
European Journal of Medicinal Chemistry,
Journal Year:
2024,
Volume and Issue:
266, P. 116128 - 116128
Published: Jan. 9, 2024
In
this
paper
we
present
the
design,
synthesis,
and
biological
evaluation
of
a
new
series
peptidomimetics
acting
as
potent
anti-SARS-CoV-2
agents.
Starting
from
our
previously
described
Main
Protease
(M