The
loss
of
a
spouse
is
often
cited
as
the
most
traumatic
event
in
person’s
life.
However,
for
people,
severity
grief
and
its
maladaptive
effects
subside
over
time
via
an
understudied
adaptive
process.
Like
humans,
socially
monogamous
prairie
voles
(
Microtus
ochrogaster
)
form
opposite-sex
pair
bonds,
upon
partner
separation,
show
stress
phenotypes
that
diminish
time.
We
test
hypothesis
extended
separation
diminishes
bond-associated
behaviors
causes
bond
transcriptional
signatures
to
erode.
Opposite-sex
or
same-sex
paired
males
were
cohoused
2
weeks
then
either
remained
separated
48
hours
4
before
collecting
fresh
nucleus
accumbens
tissue
RNAseq.
In
separate
cohort,
we
assessed
partner-directed
affiliation
at
these
points.
found
persist
despite
prolonged
both
voles.
bonding
led
changes
accumbal
transcription
stably
maintained
while
animals
but
eroded
following
separation.
Eroded
genes
are
associated
with
gliogenesis
myelination,
suggesting
previously
undescribed
role
glia
loss.
Further,
pioneered
neuron-specific
translating
ribosomal
affinity
purification
Neuronally
enriched
revealed
dopaminergic-,
mitochondrial-,
steroid
hormone
signaling-associated
gene
clusters
sensitive
acute
disruption
adaptation.
Our
results
suggest
erodes
transcriptomic
core
behavioral
features
remaining
intact,
revealing
potential
molecular
processes
priming
vole
be
able
new
bond.
Cell Reports,
Год журнала:
2022,
Номер
39(1), С. 110616 - 110616
Опубликована: Апрель 1, 2022
The
ventral
tegmental
area
(VTA)
is
a
complex
brain
region
that
essential
for
reward
function
and
frequently
implicated
in
neuropsychiatric
disease.
While
decades
of
research
on
VTA
have
focused
dopamine
neurons,
recent
evidence
has
identified
critical
roles
GABAergic
glutamatergic
neurons
processes.
Additionally,
although
subsets
express
genes
involved
the
synthesis
transport
multiple
neurotransmitters,
characterization
these
combinatorial
populations
largely
relied
low-throughput
methods.
To
comprehensively
define
molecular
architecture
VTA,
we
performed
single-nucleus
RNA
sequencing
21,600
cells
from
rat
VTA.
Analysis
neuronal
subclusters
identifies
selective
markers
reveals
expression
profiles
receptors
targeted
by
drugs
abuse,
demonstrates
population-specific
enrichment
gene
sets
linked
to
disorders.
These
results
highlight
heterogeneity
provide
resource
further
exploration
expression.
Cocaine
use
disorder
(CUD)
is
an
intractable
syndrome,
and
rising
overdose
death
rates
represent
a
substantial
public
health
crisis
that
exacts
tremendous
personal
financial
costs
on
patients
society.
Sharp
increases
in
cocaine
drive
the
urgent
need
for
better
mechanistic
insight
into
this
chronic
relapsing
brain
currently
lacks
effective
treatment
options.
To
investigate
transcriptomic
changes
involved,
we
conducted
RNA
sequencing
two
striatal
regions
are
heavily
implicated
CUD,
nucleus
accumbens
caudate
nucleus,
from
men
suffering
CUD
matched
controls.
Weighted
gene
coexpression
analyses
identified
CUD-specific
networks
enriched
ionotropic
receptors
linked
to
lowered
neuroinflammation,
contrasting
proinflammatory
responses
found
opioid
disorder.
Integration
of
comprehensive
datasets
mouse
self-administration
models
revealed
evolutionarily
conserved
implicate
especially
D1
medium
spiny
neurons
as
drivers
cocaine-induced
plasticity.
Neuropsychopharmacology,
Год журнала:
2020,
Номер
45(9), С. 1423 - 1430
Опубликована: Март 20, 2020
Oxytocin
is
currently
being
considered
as
a
novel
therapeutic
for
anxiety
disorders
due
to
its
ability
promote
affiliative
behaviors.
In
the
nucleus
accumbens
(NAc)
activation
of
oxytocin
receptors
(OTR)
promotes
social
approach
(time
spent
near
an
unfamiliar
individual).
Here,
we
show
that
stressful
experiences
reduce
expression
NAc
OTR
mRNA,
coinciding
with
decreases
in
approach.
Social
stressors
also
increase
vigilance,
characterized
orienting
individual
without
approaching.
Vigilance
key
component
behavioral
inhibition,
personality
trait
risk
factor
disorders.
To
understand
whether
can
modulate
both
and
use
pharmacological
approaches
assess
impact
or
inhibition
downstream
pathways
on
these
First,
unstressed
male
female
California
mice,
by
unbiased
antagonist
(L-368,899)
reduces
but
does
not
induce
vigilance.
Next,
infusion
Atosiban,
OTR-Gq
antagonist/OTR-Gi
agonist,
has
same
effect
females.
Finally,
Carbetocin,
biased
increases
stressed
females
while
simultaneously
inhibiting
Taken
together
data
suggest
differentially
primarily
through
mechanism.
Importantly,
alone
insufficient
vigilance
suggesting
mechanisms
modulating
may
be
distinct
from
Frontiers in Cellular Neuroscience,
Год журнала:
2022,
Номер
15
Опубликована: Янв. 17, 2022
The
dopamine
D1
receptor
(D1R)
is
a
Gαs/olf-coupled
GPCR
that
expressed
in
the
midbrain
and
forebrain,
regulating
motor
behavior,
reward,
motivational
states,
cognitive
processes.
Although
D1R
was
initially
identified
as
promising
drug
target
almost
40
years
ago,
development
of
clinically
useful
ligands
has
until
recently
been
hampered
by
lack
suitable
candidate
molecules.
emergence
new
non-catechol
agonists,
biased
allosteric
modulators
renewed
clinical
interest
drugs
targeting
this
receptor,
specifically
for
treatment
impairment
Parkinson's
Disease,
neuropsychiatric
disorders.
To
develop
better
therapeutics,
advances
ligand
chemistry
must
be
matched
an
expanded
understanding
signaling
across
cell
populations
brain,
disease
states.
Depending
on
brain
region,
couples
primarily
to
either
Gαs
or
Gαolf
through
which
it
activates
cAMP/PKA-dependent
cascade
can
regulate
neuronal
excitability,
stimulate
gene
expression,
facilitate
synaptic
plasticity.
However,
like
many
GPCRs,
signal
multiple
downstream
pathways,
specific
signatures
may
differ
between
types
altered
disease.
guide
improved
ligands,
important
understand
how
unfolds
cells,
affects
circuit
function
behavior.
In
review,
we
provide
summary
D1R-directed
various
describe
pathways
have
linked
physiological
behavioral
outcomes.
addition,
address
current
state
development,
including
pharmacology
newly
developed
non-catecholamine
discuss
potential
utility
D1R-agonists
Disease
impairment.
Translational Psychiatry,
Год журнала:
2022,
Номер
12(1)
Опубликована: Июль 20, 2022
The
central
amygdala
(CeA)
contains
a
diverse
population
of
cells,
including
multiple
subtypes
GABAergic
neurons,
along
with
glia
and
epithelial
cells.
Specific
CeA
cell
types
have
been
shown
to
affect
alcohol
consumption
in
animal
models
dependence
may
be
involved
negative
during
withdrawal.
We
used
single-nuclei
RNA
sequencing
determine
cell-type
specificity
differential
gene
expression
the
induced
by
Cells
within
were
classified
using
unbiased
clustering
analyses
identified
based
on
known
marker
genes.
Differential
analysis
was
performed
each
cell-type.
It
revealed
astrocytes
neurons
associated
further
subclassified
into
13
clusters
Analyzing
transcriptomic
responses
these
subclusters
that
exposure
differentially
expressed
genes
one
subtype
protein
kinase
C
delta
(PKCδ)
expressing
neurons.
These
results
suggest
PKCδ
uniquely
sensitive
effects
identify
novel
cells