Cell Reports,
Journal Year:
2022,
Volume and Issue:
41(11), P. 111833 - 111833
Published: Dec. 1, 2022
Pain
chronicity
involves
unpleasant
experience
in
both
somatosensory
and
affective
aspects,
accompanied
with
the
prefrontal
cortex
(PFC)
neuroplastic
alterations.
However,
whether
specific
PFC
neuronal
ensembles
underlie
pain
remains
elusive.
Here
we
identify
a
nociceptive
ensemble
dorsomedial
(dmPFC),
which
shows
prominent
reactivity
to
stimuli.
We
observed
that
this
distinct
molecular
characteristics
is
densely
connected
pain-related
regions
including
basolateral
amygdala
(BLA)
lateral
parabrachial
nuclei
(LPB).
Prolonged
chemogenetic
activation
of
ensemble,
but
not
randomly
transfected
subset
dmPFC
neurons,
induces
chronic
pain-like
behaviors
normal
mice.
By
contrast,
silencing
neurons
relieves
hypersensitivity
anxiety
mice
inflammatory
pain.
These
results
suggest
presence
processing
information
regulating
chronicity.
bioRxiv (Cold Spring Harbor Laboratory),
Journal Year:
2025,
Volume and Issue:
unknown
Published: March 5, 2025
Social
behavior
is
critical
for
survival
and
adaptation,
which
profoundly
disrupted
in
autism
spectrum
disorders
(ASD).
withdrawal
due
to
information
overload
was
often
described
ASD,
it
suspected
that
increased
basal
noise,
i.e.,
excessive
background
neuronal
activities
the
brain
could
be
a
disease
mechanism.
However,
experimental
test
of
this
hypothesis
limited.
Loss-of-function
mutations
(deficiency)
SCN2A
,
encodes
voltage-gated
sodium
channel
Na
V
1.2,
have
been
revealed
as
leading
monogenic
cause
profound
ASD.
Here,
we
Scn2a
deficiency
results
robust
multifaceted
social
impairments
mice.
-deficient
neurons
displayed
an
excitation-inhibition
(E/I)
ratio,
contributing
elevated
noise
diminished
signal-to-noise
ratio
(SNR)
during
interactions.
Notably,
restoration
expression
adulthood
able
rescue
both
SNR
deficits.
By
balancing
E/I
reducing
firing,
FDA-approved
GABA
A
receptor-positive
allosteric
modulator
improves
sociability
mice
normalizes
translationally
relevant
human
organoids
carrying
autism-associated
nonsense
mutation.
Collectively,
our
findings
role
1.2
regulation
behaviors,
identified
molecular,
cellular,
circuitry
mechanisms
underlying
-associated
disorders.
leads
pronounced
deficits
overall
enhanced
activity,
impaired
ratio.
Both
are
reversible
through
adulthood.
Targeted
striatum-projecting
rescues
impairments.
transmission
reduced
mouse
organoid
models
deficiency,
acute
systemic
administration
modulators
restores
sociability.
Graphical
abstract:
Severe
predominate
decrease
with
SNR,
adult
1.2-deficient
Cell Reports,
Journal Year:
2022,
Volume and Issue:
39(10), P. 110906 - 110906
Published: June 1, 2022
Dysfunctional
sociability
is
a
core
symptom
in
autism
spectrum
disorder
(ASD)
that
may
arise
from
neural-network
dysconnectivity
between
multiple
brain
regions.
However,
pathogenic
mechanisms
underlying
social
dysfunction
are
largely
unknown.
Here,
we
demonstrate
circuit-selective
mutation
(ctMUT)
of
ASD-risk
Shank3
gene
within
unidirectional
projection
the
prefrontal
cortex
to
basolateral
amygdala
alters
spine
morphology
and
excitatory-inhibitory
balance
circuit.
ctMUT
mice
show
reduced
as
well
elevated
neural
activity
its
amplitude
variability,
which
consistent
with
neuroimaging
results
human
ASD
patients.
Moreover,
circuit
hyper-activity
disrupts
temporal
correlation
socially
tuned
neurons
events
interactions.
Finally,
optogenetic
activation
wild-type
partially
recapitulates
mice,
while
inhibition
rescues
behavior.
Collectively,
these
highlight
circuit-level
mechanism
drives
dysfunction.
Cell Reports,
Journal Year:
2022,
Volume and Issue:
41(11), P. 111833 - 111833
Published: Dec. 1, 2022
Pain
chronicity
involves
unpleasant
experience
in
both
somatosensory
and
affective
aspects,
accompanied
with
the
prefrontal
cortex
(PFC)
neuroplastic
alterations.
However,
whether
specific
PFC
neuronal
ensembles
underlie
pain
remains
elusive.
Here
we
identify
a
nociceptive
ensemble
dorsomedial
(dmPFC),
which
shows
prominent
reactivity
to
stimuli.
We
observed
that
this
distinct
molecular
characteristics
is
densely
connected
pain-related
regions
including
basolateral
amygdala
(BLA)
lateral
parabrachial
nuclei
(LPB).
Prolonged
chemogenetic
activation
of
ensemble,
but
not
randomly
transfected
subset
dmPFC
neurons,
induces
chronic
pain-like
behaviors
normal
mice.
By
contrast,
silencing
neurons
relieves
hypersensitivity
anxiety
mice
inflammatory
pain.
These
results
suggest
presence
processing
information
regulating
chronicity.