Journal of Neuroendocrinology,
Journal Year:
2025,
Volume and Issue:
unknown
Published: March 18, 2025
Abstract
Kisspeptinergic
signaling
is
well‐established
as
crucial
for
the
regulation
of
reproduction,
but
its
potential
broader
role
in
brain
function
less
understood.
This
study
investigates
distribution
and
chemotyping
kisspeptin‐expressing
neurons
within
mouse
brain.
RNAscope
single,
dual,
multiplex
situ
hybridization
methods
were
used
to
assess
kisspeptin
mRNA
(
Kiss1
)
expression
co‐expression
with
other
neuropeptides,
excitatory
inhibitory
neurotransmitter
markers,
sex
steroid
receptors
wild‐type
intact
gonadectomized
young
adult
mice.
Seven
distinct
neuronal
chemotypes
characterized,
including
two
novel
groups
described
first
time,
that
is,
population
ventral
premammillary
nucleus
solitary
tract.
was
also
observed
localize
both
somatic
dendritic
compartments
hypothalamic
neurons.
High
androgen
receptor
changes
medial
amygdala
septo‐hypothalamic
following
GDX
males,
not
females,
suggest
a
regulating
signaling.
provides
detailed
chemoanatomical
map
neurons,
highlighting
their
functional
diversity.
The
discovery
new
group
gonadectomy‐induced
patterns
roles
functions
beyond
those
reproduction.
Nature,
Journal Year:
2022,
Volume and Issue:
613(7945), P. 696 - 703
Published: Nov. 30, 2022
Abstract
In
humans,
traumatic
social
experiences
can
contribute
to
psychiatric
disorders
1
.
It
is
suggested
that
trauma
impairs
brain
reward
function
such
behaviour
no
longer
rewarding,
leading
severe
avoidance
2,3
rodents,
the
chronic
defeat
stress
(CSDS)
model
has
been
used
understand
neurobiology
underlying
susceptibility
versus
resilience
following
trauma,
yet
little
known
regarding
its
impact
on
4,5
Here
we
show
that,
CSDS,
a
subset
of
male
and
female
mice,
termed
susceptible
(SUS),
avoid
interaction
with
non-aggressive,
same-sex
juvenile
C57BL/6J
mice
do
not
develop
context-dependent
encounters
them.
Non-social
stressors
have
effect
in
either
sex.
Next,
using
whole-brain
Fos
mapping,
vivo
Ca
2+
imaging
whole-cell
recordings,
identified
population
stress/threat-responsive
lateral
septum
neurotensin
(NT
LS
)
neurons
are
activated
by
interactions
only
SUS
but
resilient
or
unstressed
control
mice.
Optogenetic
chemogenetic
manipulation
NT
their
downstream
connections
modulates
reward.
Together,
these
data
suggest
previously
rewarding
targets
possibly
perceived
as
threats
resulting
from
hyperactive
occlude
processing.
iScience,
Journal Year:
2025,
Volume and Issue:
28(2), P. 111820 - 111820
Published: Jan. 18, 2025
The
lateral
septum
(LS)
is
a
midline,
subcortical
structure
that
critical
regulator
of
social
behaviors.
Mouse
studies
have
identified
molecularly
distinct
neuronal
populations
within
the
LS,
which
control
specific
facets
behavior.
Despite
its
known
molecular
heterogeneity
in
mouse
and
role
regulating
behavior,
comprehensive
profiling
human
LS
has
not
been
performed.
Here,
we
conducted
single-nucleus
RNA
sequencing
(snRNA-seq)
to
generate
transcriptomic
profiles
compared
recently
collected
snRNA-seq
datasets.
Our
analyses
TRPC4
as
conserved
marker
while
FREM2
enriched
only
LS.
We
also
identify
cell
type
marked
by
OPRM1,
gene
encoding
μ-opioid
receptor.
Together,
these
results
highlight
transcriptional
robust
genes
for
Nature Communications,
Journal Year:
2023,
Volume and Issue:
14(1)
Published: April 5, 2023
Major
depressive
disorder
ranks
as
a
major
burden
of
disease
worldwide,
yet
the
current
antidepressant
medications
are
limited
by
frequent
non-responsiveness
and
significant
side
effects.
The
lateral
septum
(LS)
is
thought
to
control
depression,
however,
cellular
circuit
substrates
largely
unknown.
Here,
we
identified
subpopulation
LS
GABAergic
adenosine
A
Frontiers in Systems Neuroscience,
Journal Year:
2023,
Volume and Issue:
17
Published: April 17, 2023
Anxiety
disorders
are
the
most
common
class
of
mental
illness
in
U.S.,
affecting
40
million
individuals
annually.
is
an
adaptive
response
to
a
stressful
or
unpredictable
life
event.
Though
evolutionarily
thought
aid
survival,
excess
intensity
duration
anxiogenic
can
lead
plethora
adverse
symptoms
and
cognitive
dysfunction.
A
wealth
data
has
implicated
medial
prefrontal
cortex
(mPFC)
regulation
anxiety.
Norepinephrine
(NE)
crucial
neuromodulator
arousal
vigilance
believed
be
responsible
for
many
anxiety
disorders.
NE
synthesized
locus
coeruleus
(LC),
which
sends
major
noradrenergic
inputs
mPFC.
Given
unique
properties
LC-mPFC
connections
heterogeneous
subpopulation
neurons
known
involved
regulating
anxiety-like
behaviors,
likely
modulates
PFC
function
cell-type
circuit-specific
manner.
In
working
memory
stress
response,
follows
inverted-U
model,
where
overly
high
low
release
associated
with
sub-optimal
neural
functioning.
contrast,
based
on
current
literature
review
individual
contributions
disorders,
we
propose
model
level-
adrenergic
receptor-dependent,
NE-PFC
modulation
Further,
advent
new
techniques
measure
unprecedented
spatial
temporal
resolution
will
significantly
help
us
understand
how
bioRxiv (Cold Spring Harbor Laboratory),
Journal Year:
2024,
Volume and Issue:
unknown
Published: Jan. 16, 2024
Because
opioid
withdrawal
is
an
intensely
aversive
experience,
persons
with
use
disorder
(OUD)
often
relapse
to
avoid
it.
The
lateral
septum
(LS)
a
forebrain
structure
that
important
in
aversion
processing,
and
previous
studies
have
linked
the
substance
disorders.
It
unclear,
however,
which
precise
LS
cell
types
might
contribute
maladaptive
state
of
withdrawal.
To
address
this,
we
used
single-nucleus
RNA-sequencing
interrogate
type
specific
gene
expression
changes
induced
by
chronic
morphine
We
discovered
globally
disrupted
transcriptional
profile
types,
but
Neurotensin-expressing
neurons
(
bioRxiv (Cold Spring Harbor Laboratory),
Journal Year:
2024,
Volume and Issue:
unknown
Published: Feb. 20, 2024
ABSTRACT
The
lateral
septum
(LS)
is
a
nucleus
in
the
ventral
forebrain
that
modulates
complex
social
and
affective
behaviors.
Several
distinct
neuronal
types
have
been
described
LS;
however,
full
extent
of
this
cellular
molecular
diversity
remains
unclear.
We
address
gap
by
profiling
transcriptional
identity
mature
LS
neurons
originating
from
two
progenitor
lineages
defined
their
anatomical
location
expression
transcription
factor
Nkx2.1
.
describe
12
molecularly
subtypes
fall
into
main
groups:
those
with
history
without.
discovered
lineage
share
an
enrichment
select
cell
adhesion
communication
molecules.
Despite
this,
we
found
developmental
origins
can
exhibit
significant
similarities.
then
examined
spatial
relationships
among
LS,
revealing
each
subtype
occupies
discrete
domain.
These
domains
are
graded
patterns
gene
correlate
taxonomy
neuron
encode
proteins
involved
synaptic
signaling.
Lastly,
genetically
labeled
non-overlapping
subgroups
neurons,
detailed
connective,
morphological,
electrophysiological
properties.
Our
findings
offer
deeper
understanding
heterogeneity
paving
way
for
future
studies
how
these
contribute
to
regulating
emotional
motivated