Lights, fiber, action! A primer on in vivo fiber photometry
Neuron,
Journal Year:
2023,
Volume and Issue:
112(5), P. 718 - 739
Published: Dec. 15, 2023
Fiber
photometry
is
a
key
technique
for
characterizing
brain-behavior
relationships
in
vivo.
Initially,
it
was
primarily
used
to
report
calcium
dynamics
as
proxy
neural
activity
via
genetically
encoded
indicators.
This
generated
new
insights
into
brain
functions
including
movement,
memory,
and
motivation
at
the
level
of
defined
circuits
cell
types.
Recently,
opportunity
discovery
with
fiber
has
exploded
development
an
extensive
range
fluorescent
sensors
biomolecules
neuromodulators
peptides
that
were
previously
inaccessible
critical
advance,
combined
availability
affordable
"plug-and-play"
recording
systems,
made
monitoring
molecules
high
spatiotemporal
precision
during
behavior
highly
accessible.
However,
while
opening
exciting
avenues
research,
rapid
expansion
applications
occurred
without
coordination
or
consensus
on
best
practices.
Here,
we
provide
comprehensive
guide
help
end-users
execute,
analyze,
suitably
interpret
studies.
Language: Английский
A high-performance GRAB sensor reveals differences in the dynamics and molecular regulation between neuropeptide and neurotransmitter release
Nature Communications,
Journal Year:
2025,
Volume and Issue:
16(1)
Published: Jan. 18, 2025
The
co-existence
and
co-transmission
of
neuropeptides
small
molecule
neurotransmitters
within
individual
neuron
represent
a
fundamental
characteristic
observed
across
various
species.
However,
the
differences
regarding
their
in
vivo
spatiotemporal
dynamics
underlying
molecular
regulation
remain
poorly
understood.
Here,
we
develop
GPCR-activation-based
(GRAB)
sensor
for
detecting
short
neuropeptide
F
(sNPF)
with
high
sensitivity
resolution.
Furthermore,
investigate
between
sNPF
acetylcholine
(ACh)
from
same
neurons.
Interestingly,
our
findings
reveal
distinct
release
ACh.
Notably,
results
indicate
that
synaptotagmins
(Syt)
are
involved
these
two
processes,
as
Syt7
Sytα
release,
while
Syt1
ACh
release.
Thus,
this
high-performance
GRAB
provides
robust
tool
studying
shedding
insights
into
unique
distinguish
neurotransmitters.
Language: Английский
The lateral habenula: A hub for value-guided behavior
Cell Reports,
Journal Year:
2024,
Volume and Issue:
43(4), P. 113968 - 113968
Published: March 22, 2024
SummaryThe
habenula
is
an
evolutionarily
highly
conserved
diencephalic
brain
region
divided
into
two
major
parts,
medial
and
lateral.
Over
the
past
decades,
studies
of
lateral
(LHb),
in
particular,
have
identified
key
functions
value-guided
behavior
health
disease.
In
this
review,
we
focus
on
recent
insights
LHb
connectivity
its
functional
relevance
for
different
types
aversive
appetitive
behavior.
First,
give
overview
anatomical
organization
main
cellular
composition.
Next,
elaborate
how
distinct
neuronal
subpopulations
encode
stimuli
their
involvement
more
complex
decision-making
processes.
Finally,
scrutinize
afferent
efferent
connections
discuss
implications
LHb-dependent
A
deepened
understanding
circuit
components
will
substantially
contribute
to
our
knowledge
Language: Английский
Current and emerging methods for probing neuropeptide transmission
Current Opinion in Neurobiology,
Journal Year:
2023,
Volume and Issue:
81, P. 102751 - 102751
Published: July 22, 2023
Language: Английский
Noncanonical Amino Acid Tools and Their Application to Membrane Protein Studies
Chemical Reviews,
Journal Year:
2024,
Volume and Issue:
124(22), P. 12498 - 12550
Published: Nov. 7, 2024
Methods
rooted
in
chemical
biology
have
contributed
significantly
to
studies
of
integral
membrane
proteins.
One
recent
key
approach
has
been
the
application
genetic
code
expansion
(GCE),
which
enables
site-specific
incorporation
noncanonical
amino
acids
(ncAAs)
with
defined
properties
into
Efficient
GCE
is
challenging,
especially
for
proteins,
specialized
biogenesis
and
cell
trafficking
machinery
tend
be
expressed
at
low
levels
membranes.
Many
eukaryotic
proteins
cannot
functionally
Language: Английский
The role of dorsal raphe nucleus neuropeptides in reward and aversion
Kathryn Braden,
No information about this author
Daniel C. Castro
No information about this author
Frontiers in Behavioral Neuroscience,
Journal Year:
2025,
Volume and Issue:
19
Published: April 9, 2025
The
dorsal
raphe
nucleus
is
a
critical
node
for
affective
and
motivated
circuits
in
the
brain.
Though
typically
known
as
serotonergic
hub,
also
highly
enriched
variety
of
neuropeptides.
Recent
advances
biotechnology
behavioral
modeling
have
led
to
resurgence
neuropeptide
research,
allowing
investigators
target
unique
peptide
systems
with
unprecedented
clarity.
Here,
we
review
discuss
multiple
consider
how
their
activity
may
contribute
reward
aversion.
While
this
not
an
exhaustive
review,
short
overview
will
highlight
many
opportunities
available
refine
our
understanding
By
more
thoroughly
studying
neuropeptides,
reveal
novel
pathways
design
effective
therapeutics
tailor
treatments
millions
patients.
Language: Английский
Mapping and decoding neuropeptide signaling networks in nervous system function
Current Opinion in Neurobiology,
Journal Year:
2025,
Volume and Issue:
92, P. 103027 - 103027
Published: April 21, 2025
Neuropeptides
are
widespread
signaling
molecules
that
central
to
brain
function
in
all
animals.
Recent
advances
profiling
their
expression
across
neural
circuits,
conjunction
with
detailed
biochemical
characterization
of
interactions
receptors,
have
made
it
feasible
build
brain-wide
maps
neuropeptide
signaling.
Here,
we
discuss
how
recent
reconstructions
networks,
from
mammalian
regions
nervous
system-wide
C.
elegans,
reveal
conserved
organizational
features
neuropeptidergic
networks.
Furthermore,
review
technical
breakthroughs
vivo
sensors
for
peptide
release,
receptor
binding,
and
intracellular
bring
a
mechanistic
understanding
networks
within
experimental
reach.
Finally,
describe
the
architecture
can
change
throughout
evolution
or
even
lifetime
individuals,
which
highlights
complexities
must
be
considered
understand
these
modulate
circuit
activity
behavior
different
contexts.
Language: Английский
A Bright Future? A Perspective on Class C GPCR Based Genetically Encoded Biosensors
ACS Chemical Neuroscience,
Journal Year:
2024,
Volume and Issue:
15(5), P. 889 - 897
Published: Feb. 21, 2024
One
of
the
major
challenges
in
molecular
neuroscience
today
is
to
accurately
monitor
neurotransmitters,
neuromodulators,
peptides,
and
various
other
biomolecules
brain
with
high
temporal
spatial
resolution.
Only
a
comprehensive
understanding
neuromodulator
dynamics,
their
release
probability,
distribution
will
unravel
ultimate
role
cognition
behavior.
This
Perspective
offers
an
overview
potential
design
strategies
for
class
C
GPCR-based
biosensors.
It
briefly
highlights
current
applications
biosensors,
primary
focus
on
GPCRs
unique
structural
characteristics
compared
GPCR
subfamilies.
The
discussion
insights
into
plausible
future
approaches
biosensor
development
targeting
members
this
specific
subfamily.
important
note
that,
at
stage,
we
are
contemplating
possibilities
rather
than
presenting
concrete
guide,
as
pipeline
still
under
development.
Language: Английский
Effects of Stress Exposure to Pain Perception in Pre-Clinical Studies: Focus on the Nociceptin/Orphanin FQ–NOP Receptor System
P. Pola,
No information about this author
Alessia Frezza,
No information about this author
Elaine C. Gavioli
No information about this author
et al.
Brain Sciences,
Journal Year:
2024,
Volume and Issue:
14(9), P. 936 - 936
Published: Sept. 19, 2024
Exposure
to
physical
and
psychological
stress
modulates
pain
transmission
in
a
dual
manner.
Stress-induced
analgesia
(SIA)
refers
the
reduction
sensitivity
that
can
occur
response
acute
stress.
On
contrary,
chronic
exposure
may
lead
phenomenon
named
stress-induced
hyperalgesia
(SIH).
SIH
is
clinically
relevant
since
it
has
been
well
documented
exacerbates
patients
with
several
syndromes,
including
migraine.
The
availability
of
animal
models
SIA
high
importance
for
understanding
biological
mechanisms
leading
these
phenomena
identification
pharmacological
targets
useful
alleviate
burden
stress-exacerbated
pain.
Among
targets,
nociceptin/orphanin
FQ
(N/OFQ)–N/OFQ
peptide
(NOP)
receptor
system
identified
as
key
modulator
both
susceptibility.
This
review
describes
first
experimental
approaches
induce
rodents.
second
part
manuscript
summarizes
scientific
evidence
suggests
N/OFQ–NOP
player
stress–pain
interaction
candidates
NOP
antagonists
drugs
mitigate
detrimental
effects
on
perception.
Language: Английский