PLoS Genetics,
Год журнала:
2022,
Номер
18(9), С. e1010370 - e1010370
Опубликована: Сен. 19, 2022
The
introgression
of
genetic
traits
through
gene
drive
may
serve
as
a
powerful
and
widely
applicable
method
biological
control.
However,
for
many
applications,
self-perpetuating
that
can
spread
beyond
the
specific
target
population
be
undesirable
preclude
use.
Daisy-chain
drives
have
been
proposed
means
tuning
invasiveness
drive,
allowing
it
to
efficiently
into
population,
but
self-limiting
that.
are
made
up
multiple
independent
elements,
where
each
element,
except
one,
biases
inheritance
another,
forming
chain.
Under
ideal
biasing
conditions,
released
elements
remain
linked
in
same
configuration,
generating
copies
most
their
last
remaining
link
Through
mathematical
modelling
populations
connected
by
migration,
we
evaluated
effect
resistance
alleles,
different
fitness
costs,
reduction
cut-rate,
maternal
deposition
on
two
alternative
daisy-chain
designs.
We
find
nature
makes
highly
dependent
efficiency
fidelity
mechanism.
In
particular,
reductions
cut-rate
formation
non-lethal
alleles
cause
lose
configuration.
This
severely
reduces
allows
phantom
cutting,
an
upstream
element
cuts
downstream
locus
despite
corresponding
being
absent,
creating
additional
alleles.
cutting
mitigated
indirect
design.
further
while
dominant
costs
reduce
invasiveness,
if
overcome
with
increased
release
frequency,
they
neighbouring
population.
Nature Communications,
Год журнала:
2021,
Номер
12(1)
Опубликована: Июль 19, 2021
Abstract
Mosquito-borne
diseases,
such
as
dengue
and
malaria,
pose
significant
global
health
burdens.
Unfortunately,
current
control
methods
based
on
insecticides
environmental
maintenance
have
fallen
short
of
eliminating
the
disease
burden.
Scalable,
deployable,
genetic-based
solutions
are
sought
to
reduce
transmission
risk
these
diseases.
Pathogen-blocking
Wolbachia
bacteria,
or
genome
engineering-based
mosquito
strategies
including
gene
drives
been
developed
address
problems,
both
requiring
release
modified
mosquitoes
into
environment.
Here,
we
review
latest
developments,
notable
similarities,
critical
distinctions
between
promising
technologies
discuss
their
future
applications
for
mosquito-borne
control.
Journal of Integrative Agriculture,
Год журнала:
2022,
Номер
22(3), С. 651 - 668
Опубликована: Ноя. 16, 2022
Genetic
control
strategies
such
as
the
sterile
insect
technique
have
successfully
fought
pests
worldwide.
The
CRISPR
(clustered
regularly
interspaced
short
palindromic
repeats)
technology,
together
with
high-quality
genomic
resources
obtained
in
more
and
species,
greatly
facilitates
development
of
novel
genetic
strains
that
can
be
used
area-wide
species-specific
pest
programs.
Here,
we
review
research
progress
towards
state-of-art
CRISPR-based
strategies,
including
gene
drive,
sex
ratio
distortion,
CRISPR-engineered
sexing
strains,
precision-guided
technique.
These
strategies'
working
mechanisms,
potential
resistance
regulations
are
illustrated
discussed.
In
addition,
recent
developments
stacked
conditional
systems
introduced.
We
envision
advances
technology
will
continue
to
one
driving
forces
for
developing
next
generation
strategies.
Nature Communications,
Год журнала:
2022,
Номер
13(1)
Опубликована: Ноя. 21, 2022
Abstract
CRISPR/Cas
gene
drives
can
bias
transgene
inheritance
through
different
mechanisms.
Homing
are
designed
to
replace
a
wild-type
allele
with
copy
of
drive
element
on
the
homologous
chromosome.
In
Aedes
aegypti
,
sex-determining
locus
is
closely
linked
white
gene,
which
was
previously
used
as
target
for
homing
(
w
GDe
).
Here,
an
analysis
using
this
linkage
we
show
that
in
males
did
not
occur
by
homing,
rather
increased
propagation
donor
element.
We
test
same
transgenes
expressing
Cas9
germline
regulatory
elements
sds3
bgcn
and
nup50
.
only
find
even
identical
-Cas9
transgene.
propose
DNA
repair
outcomes
may
be
more
context
dependent
than
anticipated
other
reported
may,
fact,
their
Ecological Modelling,
Год журнала:
2023,
Номер
478, С. 110285 - 110285
Опубликована: Янв. 25, 2023
Synthetic
gene
drive
(GD)
systems
constitute
a
form
of
novel
invasive
environmental
biotechnology
with
far-reaching
consequences
beyond
those
other
known
genetically
modified
organisms
(GMOs).
During
the
last
10
years,
development
GD
has
been
closely
linked
to
mathematical
modelling
which
can
provide
feedback
on
how
achieve
spread
but
also
may
be
used
predict
ecological
release.
GMOs,
thus
systems,
need
pass
an
risk
assessment
(ERA)
prior
release
into
environment.
Models
in
this
respect
play
important
role
because
organisms,
even
at
small
scale,
not
reversible.
In
our
review,
we
analyse
scope
and
structure
existing
models
examine
they
assist
ERA.
Our
analysis
reveals
that
majority
so
far
are
deterministic,
non-spatial
tailored
for
specific
target
organism.
often
use
simplified
assumptions
biology
species
seem
made
test
effectiveness
drive.
Few
go
verify
whether
model
predictions
realistic
under
field
conditions.
We
identified
four
advanced
judged
most
ecologically
compared
implemented
parameters
ERA
requirements
by
European
Food
Safety
Authority
(EFSA)
World
Health
Organization
(WHO)
insects
mosquitoes.
Although
number
abiotic
biotic
factors
already
considered
these
models,
mating-related
traits
relevant
interactions
between
GMO
largely
excluded.
Overall,
results
show
biological
realism
still
poorly
realized
current
aim
efficacy
rather
than
effects.
Given
complexity
natural
ecosystems,
it
possible
compile
single
cover
all
complexities.
Thus,
should
further
developed
purpose
questions
related
GDs.
Moreover,
uncertainty
will
key
issue
any
RA
see
improve
aspect
when
drives.
PLoS Genetics,
Год журнала:
2021,
Номер
17(3), С. e1009333 - e1009333
Опубликована: Март 23, 2021
Synthetic
gene
drive
constructs
could,
in
principle,
provide
the
basis
for
highly
efficient
interventions
to
control
disease
vectors
and
other
pest
species.
This
efficiency
derives
part
from
leveraging
natural
processes
of
dispersal
flow
spread
construct
its
impacts
one
population
another.
However,
sometimes
(for
example,
with
invasive
species)
only
specific
populations
are
need
control,
on
non-target
would
be
undesirable.
Many
designs
use
nucleases
that
recognise
cleave
genomic
sequences,
way
restrict
their
exploit
sequence
differences
between
target
populations.
In
this
paper
we
propose
model
a
series
low
threshold
double
suppression,
each
consisting
two
constructs,
imposing
reproductive
load
inserted
into
differentiated
locus
controlling
first.
Simple
deterministic,
discrete-generation
computer
simulations
used
assess
alternative
designs.
We
find
simplest
significantly
more
robust
pre-existing
cleavage
resistance
at
than
single
designs,
complex
incorporating
sex
ratio
distortion
can
still,
even
allowing
successful
when
is
neutral
there
up
50%
population.
Similar
also
replacement,
similar
benefits.
A
analysis
CRISPR
PAM
sites
island
mainland
malaria
mosquito
Anopheles
gambiae
indicates
differentiation
needed
our
methods
work
exist
nature.
Double
drives
should
considered
but
localised
genetic
some
Frontiers in Bioengineering and Biotechnology,
Год журнала:
2023,
Номер
11
Опубликована: Фев. 13, 2023
Gene
drive
is
a
genetic
engineering
technology
that
can
enable
super-mendelian
inheritance
of
specific
alleles,
allowing
them
to
spread
through
population.
New
gene
types
have
increased
flexibility,
offering
options
for
confined
modification
or
suppression
target
populations.
Among
the
most
promising
are
CRISPR
toxin-antidote
drives,
which
disrupt
essential
wild-type
genes
by
targeting
with
Cas9/gRNA.
This
results
in
their
removal,
increasing
frequency
drive.
All
these
drives
rely
on
having
an
effective
rescue
element,
consists
recoded
version
gene.
element
be
at
same
site
as
gene,
maximizing
chance
efficient
rescue,
distant
site,
allows
useful
such
easily
disrupting
another
confinement.
Previously,
we
developed
homing
haplolethal
and
haplosufficient
These
successful
had
functional
elements
but
suboptimal
efficiency.
Here,
attempted
construct
distant-site
configuration
from
three
loci
Drosophila
melanogaster
.
We
found
additional
gRNAs
cut
rates
nearly
100%.
However,
all
failed
both
genes.
Furthermore,
one
minimally
sequence
was
used
template
homology-directed
repair
different
chromosomal
arm,
resulting
formation
resistance
alleles.
Together,
inform
design
future
CRISPR-based
drives.
Annual Review of Genetics,
Год журнала:
2023,
Номер
57(1), С. 361 - 390
Опубликована: Сен. 19, 2023
Genetic
biocontrol
aims
to
suppress
or
modify
populations
of
species
protect
public
health,
agriculture,
and
biodiversity.
Advancements
in
genome
engineering
technologies
have
fueled
a
surge
research
this
field,
with
one
gene
editing
technology,
CRISPR,
leading
the
charge.
This
review
focuses
on
current
state
CRISPR
for
genetic
pests
highlights
progress
ongoing
challenges
using
these
approaches.
Proceedings of the National Academy of Sciences,
Год журнала:
2025,
Номер
122(6)
Опубликована: Фев. 4, 2025
While
the
release
of
sterile
males
has
been
highly
successful
in
suppressing
some
pest
populations,
it
is
impractical
for
many
species
due
to
disappearing
after
a
single
generation,
necessitating
large,
repeated
releases
maintain
sufficient
impact.
Synthetic
gene
drives
promise
more
efficient
approaches
since
they
can
increase
frequency
from
rare,
yet
this
also
allows
them
spread
across
landscape,
which
may
not
always
be
desired.
Between
these
two
extremes
are
selectively
neutral
genetic
constructs
persist
at
released,
offering
potential
suppression
that
remains
localized.
One
way
achieve
would
have
perfect
balance,
all
construct
frequencies,
between
drive
increasing
and
selection
decreasing
it.
Here,
we
describe
closely
approximate
balance
using
toxin–antidote
causes
recessive
lethality
or
sterility,
encodes
genomic
editor
makes
dominant
lethal
edits
genome,
provides
protection
against
action
consequences
editing.
Computer
modeling
shows
design
100-fold
than
males,
1,000-fold
when
released
alongside
booster.
We
designs
CRISPR-based
molecular
construction,
including
options
avoid
recoded
genes
as
antidotes.