Proceedings of the National Academy of Sciences,
Journal Year:
2022,
Volume and Issue:
119(7)
Published: Feb. 10, 2022
Somatostatin
(SS)
and
allatostatin-C
(ASTC)
are
inhibitory
neuropeptides
in
chordates
protostomes,
respectively,
which
hitherto
were
identified
as
orthologs.
However,
echinoderms
have
two
SS/ASTC-type
(SS1
SS2),
here,
our
analysis
of
sequence
data
indicates
that
SS1
is
an
ortholog
ASTC
SS2
SS.
The
occurrence
both
SS-type
ASTC-type
provides
a
unique
context
to
compare
their
physiological
roles.
Investigation
the
expression
actions
neuropeptide
ArSS1
starfish
Asterias
rubens
revealed
it
causes
muscle
contraction
(myoexcitation),
contrasting
with
myoinhibitory
effects
ArSS2.
Our
findings
suggest
paralogous
originated
by
gene
duplication
common
ancestor
Bilateria,
only
one
type
being
retained
protostomes
but
types
echinoderms.
Loss
may
been
due
functional
redundancy
regulators
processes.
Conversely,
retention
be
consequence
evolution
myoexcitatory
role
for
mediated
yet
unknown
signaling
mechanisms.
Genes & Development,
Journal Year:
2018,
Volume and Issue:
32(2), P. 140 - 155
Published: Jan. 15, 2018
Daily
body
temperature
rhythm
(BTR)
is
essential
for
maintaining
homeostasis.
BTR
regulated
separately
from
locomotor
activity
rhythms,
but
its
molecular
basis
largely
unknown.
While
mammals
internally
regulate
BTR,
ectotherms,
including
Drosophila
,
exhibit
preference
(TPR)
behavior
to
BTR.
Here,
we
demonstrate
that
the
diuretic
hormone
31
receptor
(DH31R)
mediates
TPR
during
active
phase
in
.
DH31R
expressed
clock
cells,
and
ligand,
DH31,
acts
on
cells
phase.
Surprisingly,
mouse
homolog
of
DH31R,
calcitonin
(Calcr),
suprachiasmatic
nucleus
(SCN)
fluctuations
mice.
Importantly,
Calcr
are
not
required
coordinating
rhythms.
Our
results
represent
first
evidence
distinctly
rhythms
show
DH31R/Calcr
an
ancient
specific
mediator
organisms
ranging
ectotherms
endotherms.
Frontiers in Endocrinology,
Journal Year:
2017,
Volume and Issue:
8
Published: Sept. 29, 2017
Homologs
of
the
vertebrate
neuropeptide
gonadotropin-releasing
hormone
(GnRH)
have
been
identified
in
invertebrates,
including
insect
corazonin
(CRZ).
Recently,
we
reported
discovery
GnRH-type
and
CRZ-type
signaling
systems
an
echinoderm,
starfish
Asterias
rubens,
demonstrating
that
evolutionary
origin
paralogous
neuropeptides
can
be
traced
back
to
common
ancestor
protostomes
deuterostomes.
Here,
investigated
physiological
roles
(ArGnRH)
(ArCRZ)
A.
using
mRNA
situ
hybridization,
immunohistochemistry
vitro
pharmacology.
ArGnRH
precursor
(ArGnRHP)-expressing
cells
ArGnRH-immunoreactive
and/or
processes
are
present
radial
nerve
cords,
circumoral
ring,
digestive
system
(e.g.,
cardiac
stomach
pyloric
stomach),
body
wall-associated
muscle
(apical
muscle),
appendages
(tube
feet,
terminal
tentacle).
The
general
distribution
ArCRZ
(ArCRZP)-expressing
is
similar
ArGnRHP,
but
with
specific
local
differences.
For
example,
expressing
ArGnRHP
both
ectoneural
hyponeural
regions
cords
whereas
ArCRZP
were
only
observed
region.
In
pharmacological
experiments
revealed
cause
contraction
stomach,
apical
muscle,
tube
foot
preparations.
However,
was
more
potent/effective
than
as
a
contractant
muscle.
These
findings
demonstrate
myoexcitatory
starfish,
differences
their
expression
patterns
activities
indicative
distinct
roles.
This
first
study
investigate
deuterostome,
providing
new
insights
into
evolution
comparative
physiology
these
Bilateria.
Neuropeptide
signalling
systems
comprising
peptide
ligands
and
cognate
receptors
are
evolutionarily
ancient
regulators
of
physiology
behaviour.
However,
there
challenges
associated
with
determination
orthology
between
neuropeptides
in
different
taxa.
Orthologs
vertebrate
neuropeptide-Y
(NPY)
known
as
neuropeptide-F
(NPF)
have
been
identified
protostome
invertebrates,
whilst
prolactin-releasing
(PrRP)
short
(sNPF)
paralogs
NPY/NPF
vertebrates
protostomes,
respectively.
Here
we
investigated
the
occurrence
NPY/NPF/PrRP/sNPF-related
a
deuterostome
invertebrate
phylum
-
Echinodermata.
Analysis
transcriptome/genome
sequence
data
revealed
loss
NPY/NPF-type
signalling,
but
orthologs
PrRP-type
sNPF/PrRP-type
were
echinoderms.
Furthermore,
experimental
studies
that
neuropeptide
pQDRSKAMQAERTGQLRRLNPRF-NH2
is
potent
ligand
for
receptor
starfish
Asterias
rubens.
Our
findings
indicate
sNPF-type
orthologous
originated
paralog
Urbilateria.
International Journal of Molecular Sciences,
Journal Year:
2020,
Volume and Issue:
21(22), P. 8544 - 8544
Published: Nov. 12, 2020
Gonadotropin-releasing
hormones
(GnRHs)
play
pivotal
roles
in
reproduction
via
the
hypothalamus-pituitary-gonad
axis
(HPG
axis)
vertebrates.
GnRHs
and
their
receptors
(GnRHRs)
are
also
conserved
invertebrates
lacking
HPG
axis,
indicating
that
invertebrate
do
not
serve
as
"gonadotropin-releasing
factors"
but,
rather,
function
neuropeptides
directly
regulate
target
tissues.
All
vertebrate
urochordate
comprise
10
amino
acids,
whereas
amphioxus,
echinoderm,
protostome
GnRH-like
peptides
11-
or
12-residue
peptides.
Intracellular
calcium
mobilization
is
major
second
messenger
for
GnRH
signaling
cephalochordates,
echinoderms,
protostomes,
while
GnRHRs
stimulate
cAMP
production
pathways.
Moreover,
ligand-specific
modulation
of
signal
transduction
heterodimerization
between
GnRHR
paralogs
indicates
species-specific
evolution
Ciona
intestinalis.
The
characterization
authentic
putative
various
tissues
vitro
vivo
activities
indicate
responsible
regulation
both
reproductive
nonreproductive
functions.
In
this
review,
we
examine
our
current
understanding
perspectives
on
primary
sequences,
tissue
distribution
mRNA
expression,
transduction,
biological
functions
receptors.
Proceedings of the National Academy of Sciences,
Journal Year:
2022,
Volume and Issue:
119(7)
Published: Feb. 10, 2022
Somatostatin
(SS)
and
allatostatin-C
(ASTC)
are
inhibitory
neuropeptides
in
chordates
protostomes,
respectively,
which
hitherto
were
identified
as
orthologs.
However,
echinoderms
have
two
SS/ASTC-type
(SS1
SS2),
here,
our
analysis
of
sequence
data
indicates
that
SS1
is
an
ortholog
ASTC
SS2
SS.
The
occurrence
both
SS-type
ASTC-type
provides
a
unique
context
to
compare
their
physiological
roles.
Investigation
the
expression
actions
neuropeptide
ArSS1
starfish
Asterias
rubens
revealed
it
causes
muscle
contraction
(myoexcitation),
contrasting
with
myoinhibitory
effects
ArSS2.
Our
findings
suggest
paralogous
originated
by
gene
duplication
common
ancestor
Bilateria,
only
one
type
being
retained
protostomes
but
types
echinoderms.
Loss
may
been
due
functional
redundancy
regulators
processes.
Conversely,
retention
be
consequence
evolution
myoexcitatory
role
for
mediated
yet
unknown
signaling
mechanisms.