Frontiers in Microbiology,
Journal Year:
2023,
Volume and Issue:
14
Published: Aug. 14, 2023
Since
the
outbreak
of
severe
acute
respiratory
syndrome
coronavirus
2
(SARS-CoV-2)
and
its
resultant
pneumonia
in
December
2019,
cumulative
number
infected
people
worldwide
has
exceeded
670
million,
with
over
6.8
million
deaths.
Despite
marketing
multiple
series
vaccines
implementation
strict
prevention
control
measures
many
countries,
spread
prevalence
SARS-CoV-2
have
not
been
completely
effectively
controlled.
The
latest
research
shows
that
addition
to
angiotensin
converting
enzyme
II
(ACE2),
dozens
protein
molecules,
including
AXL,
can
act
as
host
receptors
for
infecting
human
cells,
virus
mutation
immune
evasion
never
seem
stop.
To
sum
up,
this
review
summarizes
organizes
relevant
literature,
comprehensively
reviews
genome
characteristics
well
receptor-based
pathogenesis
(including
ACE2
other
new
receptors),
evasion,
vaccine
development
aspects,
proposes
a
treatment
opinions.
It
is
expected
provide
theoretical
basis
an
in-depth
understanding
pathogenic
mechanism
along
ideas
diagnosis
classification,
COVID-19-related
disease
drug
development.
Journal of Medical Virology,
Journal Year:
2023,
Volume and Issue:
95(9)
Published: Sept. 1, 2023
The
COVID-19
pandemic,
caused
by
the
severe
acute
respiratory
syndrome
coronavirus
2
(SARS-CoV-2),
astonished
world
and
led
to
millions
of
deaths.
Due
viral
new
mutations
immune
evasion,
SARS-CoV-2
ranked
first
in
transmission
influence.
binding
affinity
human
leukocyte
antigen
(HLA)
polymorphisms
might
be
related
escape,
but
mechanisms
remained
unclear.
In
this
study,
we
obtained
strains
with
different
HLA
proteins
identified
31
risk
alleles.
Subsequent
structural
predictions
10
active
sites
these
that
may
promote
evasion.
Particularly,
also
found
weak
ability
class
I
could
contribute
evasion
Omicron.
These
findings
suggest
important
implications
for
preventing
providing
insights
vaccine
design.
Diagnostics,
Journal Year:
2022,
Volume and Issue:
12(10), P. 2388 - 2388
Published: Oct. 1, 2022
According
to
the
temporary
recommendations
of
2021
World
Health
Organization
(WHO),
in
addition
whole-genome
sequencing,
laboratories
various
countries
can
also
screen
for
known
mutations
utilizing
targeted
RT-PCR-based
mutation
detection
assays.
The
aim
this
work
was
generate
a
laboratory
technique
differentiate
main
circulating
SARS-CoV-2
variants
2021-2022,
when
sharp
increase
morbidity
observed
with
appearance
Omicron
variant.
Real-time
PCR
methodology
is
available
use
majority
scientific
and
diagnostic
institutions
Russia,
which
makes
it
possible
coverage
monitoring
territories
all
85
regions
order
accumulate
information
Central
Services
make
epidemiological
decisions.
With
developed
by
Research
Institute
Epidemiology
Federal
Service
Surveillance
on
Consumer
Rights
Protection
Human
Wellbeing
(FSSCRP
Wellbeing)
(CRIE),
more
than
6000
biological
samples
have
been
typed,
7%
Delta
variant
92%
identified
as
25
August
2022.
Reagents
140,000
definitions
supplied
regional
organizations.
Frontiers in Microbiology,
Journal Year:
2023,
Volume and Issue:
14
Published: Aug. 8, 2023
Background
Since
2019,
severe
acute
respiratory
syndrome
coronavirus
2
(SARS-CoV-2)
has
diversified
extensively,
producing
five
highly
virulent
lineages
designated
as
variants
of
concern
(VOCs).
The
Delta
VOC
emerged
in
India
with
increased
transmission,
immune
evasion,
and
mortality,
causing
a
massive
global
case
surge
2021.
This
study
aims
to
understand
how
the
evolved
by
characterizing
mutation
patterns
viral
population
before
after
its
emergence.
Furthermore,
we
aim
identify
influence
positive
negative
selection
on
evolution
prevalence
different
types
genome.
Methods
Three
groups
whole
genomes
were
retrieved
from
GISAID,
sourced
India,
collection
periods
follows:
Group
A—during
initial
appearance
SARS-CoV-2;
B—just
emergence
variant;
C—after
establishment
variant
India.
Mutations
>1%
each
group
identified
BioEdit
reveal
differences
quantity
type.
Sites
under
or
FUBAR.
results
compared
determine
mutations
correspond
selective
pressures
profiles
changed
reflect
genetic
diversity
Results
number
progressively
Groups
A–C,
C
reporting
2.2-
1.9-fold
increase
A
B,
respectively.
Among
all
observed
mutations,
had
highest
percentage
deletions
(22.7%;
vs.
4.2%
2.6%
respectively),
most
altered
final
amino
acid
code,
such
non-synonymous
substitutions
deletions.
Conversely,
B
synonymous
that
are
effectively
silent.
sites
experiencing
but
2.4-
2.6
times
more
C,
Conclusion
Our
findings
demonstrated
continuously
during
VOC.
Despite
this,
reports
heightened
selection,
which
potentially
preserves
important
gene
regions
evolution.
contains
an
unprecedented
positively
selected
sites,
providing
strong
evidence
active
adaptation
population.
Frontiers in Microbiology,
Journal Year:
2023,
Volume and Issue:
14
Published: Aug. 14, 2023
Since
the
outbreak
of
severe
acute
respiratory
syndrome
coronavirus
2
(SARS-CoV-2)
and
its
resultant
pneumonia
in
December
2019,
cumulative
number
infected
people
worldwide
has
exceeded
670
million,
with
over
6.8
million
deaths.
Despite
marketing
multiple
series
vaccines
implementation
strict
prevention
control
measures
many
countries,
spread
prevalence
SARS-CoV-2
have
not
been
completely
effectively
controlled.
The
latest
research
shows
that
addition
to
angiotensin
converting
enzyme
II
(ACE2),
dozens
protein
molecules,
including
AXL,
can
act
as
host
receptors
for
infecting
human
cells,
virus
mutation
immune
evasion
never
seem
stop.
To
sum
up,
this
review
summarizes
organizes
relevant
literature,
comprehensively
reviews
genome
characteristics
well
receptor-based
pathogenesis
(including
ACE2
other
new
receptors),
evasion,
vaccine
development
aspects,
proposes
a
treatment
opinions.
It
is
expected
provide
theoretical
basis
an
in-depth
understanding
pathogenic
mechanism
along
ideas
diagnosis
classification,
COVID-19-related
disease
drug
development.