Human
genetic
and
genomic
studies
have
supported
a
strong
causal
role
of
SHANK3
deficiency
in
autism
spectrum
disorder
(ASD).
However,
the
molecular
mechanism
underlying
resulting
ASD
is
not
fully
understood.
Recently,
zebrafish
has
become
an
attractive
organism
to
model
because
its
high
efficiency
manipulation
robust
behavioral
phenotypes.
The
orthologous
gene
human
duplicated
genome
two
homologs,
shank3a
shank3b.
Previous
reported
shank3
morphants
using
morpholino
method.
Here,
we
report
generation
characterization
shank3b
mutant
larval
adult
stages
CRISPR/Cas9
editing
technique.CRISPR/Cas9
was
applied
generate
loss-of-function
mutation
(shank3b-/-
)
zebrafish.
A
series
morphological
measurements,
tests,
analyses
were
performed
systematically
characterize
changes
zebrafish.shank3b-/-
exhibited
abnormal
morphology
early
development.
They
showed
reduced
locomotor
activity
both
as
larvae
adults,
social
interaction
time
spent
near
conspecifics,
significant
repetitive
swimming
behaviors.
Additionally,
levels
postsynaptic
homer1
presynaptic
synaptophysin
significantly
brain
shank3b-deficient
zebrafish.We
generated
first
inheritable
approach.
shank3b-/-
displayed
autism-like
behaviors
altered
synaptic
proteins
synaptophysin.
versatility
for
studying
neurodevelopment
conducting
drug
screening
will
likely
contribution
future
function
ASD.
Chemical Society Reviews,
Год журнала:
2020,
Номер
49(15), С. 5473 - 5509
Опубликована: Янв. 1, 2020
Amyloid
diseases
are
global
epidemics
with
profound
health,
social
and
economic
implications
yet
remain
without
a
cure.
This
dire
situation
calls
for
research
into
the
origin
pathological
manifestations
of
amyloidosis
to
stimulate
continued
development
new
therapeutics.
In
basic
science
engineering,
cross-β
architecture
has
been
constant
thread
underlying
structural
characteristics
functional
amyloids,
realizing
that
amyloid
structures
can
be
both
in
nature
fuelled
innovations
artificial
whose
use
today
ranges
from
water
purification
3D
printing.
At
conclusion
half
century
since
Eanes
Glenner's
seminal
study
amyloids
humans,
this
review
commemorates
occasion
by
documenting
major
milestones
date,
perspectives
biology,
biophysics,
medicine,
microbiology,
engineering
nanotechnology.
We
also
discuss
challenges
opportunities
drive
interdisciplinary
field
moving
forward.
Chemical Research in Toxicology,
Год журнала:
2019,
Номер
33(1), С. 95 - 118
Опубликована: Окт. 18, 2019
Unpredicted
human
safety
events
in
clinical
trials
for
new
drugs
are
costly
terms
of
health
and
money.
The
drug
discovery
industry
attempts
to
minimize
those
with
diligent
preclinical
testing.
Current
standard
practices
good
at
preventing
toxic
compounds
from
being
tested
the
clinic;
however,
false
negative
toxicity
results
still
a
reality.
Continual
improvement
must
be
pursued
realm.
Higher-quality
therapies
can
brought
forward
more
information
about
potential
toxicities
associated
mechanisms.
zebrafish
model
is
bridge
between
vitro
assays
mammalian
vivo
studies.
This
powerful
its
breadth
application
tractability
research.
In
past
two
decades,
our
understanding
disease
biology
has
grown
significantly
owing
thousands
studies
on
this
tiny
vertebrate.
Review
summarizes
challenges
strengths
model,
discusses
3Rs
value
that
it
deliver,
highlights
translatable
untranslatable
biology,
brings
together
reports
recent
focusing
toxicology.
Biomedicines,
Год журнала:
2019,
Номер
7(1), С. 23 - 23
Опубликована: Март 26, 2019
Zebrafish
larvae
show
a
clear
and
distinct
pattern
of
swimming
in
response
to
light
dark
conditions,
following
the
development
swim
bladder
at
4
days
post
fertilization.
This
behavior
is
increasingly
employed
screening
neuroactive
drugs.
The
recent
emergence
high-throughput
techniques
for
automatic
tracking
zebrafish
has
further
allowed
an
objective
efficient
way
finding
subtle
behavioral
changes
that
could
go
unnoticed
during
manual
observations.
review
highlights
use
as
model
compounds.
We
describe,
brief,
repertoire
larvae.
Then,
we
focus
on
utilization
light-dark
locomotion
test
identifying
Toxicological Sciences,
Год журнала:
2015,
Номер
145(1), С. 177 - 195
Опубликована: Фев. 23, 2015
The
increased
use
of
flammable
plastics
and
electronic
devices
along
with
stricter
fire
safety
standards
has
led
to
the
heavy
flame
retardant
chemicals
in
many
consumer,
commercial,
industrial
products.
Although
increased,
a
great
deal
uncertainty
surrounds
their
some
evidence
showing
toxicity
risk
human
environmental
health.
Recent
efforts
have
focused
on
designing
high-throughput
biological
platforms
nonmammalian
models
evaluate
prioritize
limited
hazard
information.
To
complement
these
efforts,
this
study
used
new
morphological
behavioral
testing
platform
embryonic
zebrafish
characterize
developmental
44
halogenated
organophosphate
retardants,
including
several
known
metabolites.
Zebrafish
were
exposed
retardants
from
6
120
h
post
fertilization
(hpf)
across
concentrations
spanning
4
orders
magnitude
(eg,
6.4
nM
64
µM).
Flame
effects
survival
development
evaluated
at
24
hpf,
neurobehavioral
changes
measured
using
2
photomotor
response
(PMR)
assays.
Compared
controls,
93%
(41/44)
studied
elicited
adverse
among
one
or
more
bioassays
tested
aryl
phosphate
ester
(APE)-based
mono-isopropylated
triaryl
brominated-bisphenol-A
analog
tetrabromobisphenol-A
producing
greatest
array
malformations.
Hierarchical
clustering
showed
that
APE
isopropyl,
butyl,
cresyl
substituents
phenyl
rings
clustered
tightly
particularly
potent.
Both
PMR
assays
highly
predictive
defects
supporting
as
nonlethal
means
evaluating
teratogenicity
could
allow
for
additional
evaluations
long-term
delayed
older
animals.
Taken
together,
presented
here
indicates
neurodevelopment
is
sensitive
currently
can
be
understand
potential
vulnerabilities
Zebrafish,
Год журнала:
2017,
Номер
14(3), С. 197 - 208
Опубликована: Май 1, 2017
Modeling
of
stress
and
anxiety
in
adult
zebrafish
(Danio
rerio)
is
increasingly
utilized
neuroscience
research
central
nervous
system
(CNS)
drug
discovery.
Representing
the
most
commonly
used
models,
novel
tank
test
(NTT)
focuses
on
diving
response
to
potentially
threatening
stimuli,
whereas
light-dark
(LDT)
based
fish
scototaxis
(innate
preference
for
dark
vs.
bright
areas).
Here,
we
systematically
evaluate
utility
these
two
tests,
combining
meta-analyses
published
literature
with
comparative
vivo
behavioral
whole-body
endocrine
(cortisol)
testing.
Overall,
NTT
LDT
behaviors
demonstrate
a
generally
good
cross-test
correlation
vivo,
show
that
both
tests
have
similar
sensitivity
anxiety-like
states.
Finally,
evokes
higher
levels
cortisol,
likely
representing
more
stressful
procedure
than
LDT.
Collectively,
our
study
reappraises
studying
states
zebrafish,
emphasizes
their
developing
neurobehavioral
research.
These
findings
can
help
optimize
screening
procedures
by
choosing
appropriate
models
testing
anxiolytic
or
anxiogenic
drugs.