bioRxiv (Cold Spring Harbor Laboratory),
Journal Year:
2023,
Volume and Issue:
unknown
Published: Aug. 22, 2023
Ovulation
is
essential
for
reproductive
success,
yet
the
underlying
cellular
and
molecular
mechanisms
are
far
from
clear.
Here,
we
applied
high-resolution
spatiotemporal
transcriptomics
to
map
out
cell-type-
ovulation-stage-specific
programs
as
function
of
time
during
follicle
maturation
ovulation
in
mice.
Our
analysis
revealed
dynamic
transitions
within
granulosa
cell
types
that
occur
tight
coordination
with
mesenchymal
proliferation.
We
identified
new
markers
emerging
cumulus
fate
preantral-to-antral
transition.
describe
transcriptional
respond
rapidly
stimulation
those
associated
rupture,
highlighting
prominent
roles
apoptotic
metabolic
pathways
final
stages
maturation.
further
report
stage-specific
oocyte-cumulus
interactions
diverging
differentiation
follicles
approaching
ovulation.
Collectively,
this
study
provides
insights
into
processes
regulate
mouse
ovarian
important
implications
advancing
therapeutic
strategies
medicine.
Nature Aging,
Journal Year:
2024,
Volume and Issue:
4(1), P. 145 - 162
Published: Jan. 10, 2024
Abstract
Ovarian
aging
leads
to
diminished
fertility,
dysregulated
endocrine
signaling
and
increased
chronic
disease
burden.
These
effects
begin
emerge
long
before
follicular
exhaustion.
Female
humans
experience
a
sharp
decline
in
fertility
around
35
years
of
age,
which
corresponds
declines
oocyte
quality.
Despite
growing
body
work,
the
field
lacks
comprehensive
cellular
map
transcriptomic
changes
mouse
ovary
identify
early
drivers
ovarian
decline.
To
fill
this
gap
we
performed
single-cell
RNA
sequencing
on
tissue
from
young
(3-month-old)
reproductively
aged
(9-month-old)
mice.
Our
analysis
revealed
doubling
immune
cells
ovary,
with
lymphocyte
proportions
increasing
most,
was
confirmed
by
flow
cytometry.
We
also
found
an
age-related
downregulation
collagenase
pathways
stromal
fibroblasts,
rises
fibrosis.
Follicular
displayed
stress-response,
immunogenic
fibrotic
pathway
inductions
aging.
This
report
provides
critical
insights
into
mechanisms
responsible
for
phenotypes.
The
data
can
be
explored
interactively
via
Shiny-based
web
application.
Science Advances,
Journal Year:
2024,
Volume and Issue:
10(14)
Published: April 5, 2024
The
reproductive
and
endocrine
functions
of
the
ovary
involve
spatially
defined
interactions
among
specialized
cell
populations.
Despite
ovary’s
importance
in
fertility
health,
functional
attributes
ovarian
cells
are
largely
uncharacterized.
Here,
we
profiled
>18,000
genes
257
regions
from
ovaries
two
premenopausal
donors
to
examine
units
ovary.
We
also
generated
single-cell
RNA
sequencing
data
for
21,198
three
additional
identified
four
major
types
immune
subtypes.
Custom
selection
sampling
areas
revealed
distinct
gene
activities
oocytes,
theca,
granulosa
cells.
These
contributed
panels
oocyte-,
theca-,
granulosa-specific
genes,
thus
expanding
knowledge
molecular
programs
driving
follicle
development.
Serial
samples
around
oocytes
across
cortex
medulla
uncovered
previously
unappreciated
variation
hormone
extracellular
matrix
remodeling
activities.
This
combined
spatial
atlas
serves
as
a
resource
future
studies
rare
pathological
states
Proceedings of the National Academy of Sciences,
Journal Year:
2024,
Volume and Issue:
121(5)
Published: Jan. 22, 2024
Ovulation
is
essential
for
reproductive
success,
yet
the
underlying
cellular
and
molecular
mechanisms
are
far
from
clear.
Here,
we
applied
high-resolution
spatiotemporal
transcriptomics
to
map
out
cell
type-
ovulation
stage-specific
programs
as
function
of
time
during
follicle
maturation
in
mice.
Our
analysis
revealed
dynamic
transitions
within
granulosa
types
that
occur
tight
coordination
with
mesenchymal
proliferation.
We
identified
markers
emerging
cumulus
fate
preantral-to-antral
transition.
describe
transcriptional
respond
rapidly
stimulation
those
associated
rupture,
highlighting
prominent
roles
apoptotic
metabolic
pathways
final
stages
maturation.
further
report
oocyte-cumulus
interactions
diverging
differentiation
follicles
approaching
ovulation.
Collectively,
this
study
provides
insights
into
processes
regulate
mouse
ovarian
important
implications
advancing
therapeutic
strategies
medicine.
Scientific Data,
Journal Year:
2024,
Volume and Issue:
11(1)
Published: April 13, 2024
Abstract
The
rete
ovarii
(RO)
is
an
epithelial
structure
that
arises
during
development
in
close
proximity
to
the
ovary
and
persists
throughout
adulthood.
However,
functional
significance
of
RO
remains
elusive,
it
absent
from
recent
discussions
female
reproductive
anatomy.
comprises
three
regions:
intraovarian
within
ovary,
extraovarian
periovarian
tissue,
connecting
linking
two.
We
hypothesize
plays
a
pivotal
role
ovarian
homeostasis
responses
physiological
changes.
To
begin
uncover
nature
function
cells,
we
conducted
transcriptomic
profiling
RO.
This
study
presents
datasets,
reports
our
analysis
quality
control
approaches
for
bulk,
single-cell,
nucleus-level
transcriptomics
fetal
adult
tissues
using
Pax8-rtTA;
Tre-H2B-GFP
mouse
line,
where
all
regions
express
nuclear
GFP.
integration
rigorous
validation
these
datasets
will
advance
understanding
RO’s
roles
development,
maturation,
fertility.
Nature Communications,
Journal Year:
2023,
Volume and Issue:
14(1)
Published: June 6, 2023
Abstract
Eighty
percent
of
the
estimated
600
million
domestic
cats
in
world
are
free-roaming.
These
typically
experience
suboptimal
welfare
and
inflict
high
levels
predation
on
wildlife.
Additionally,
euthanasia
healthy
animals
overpopulated
shelters
raises
ethical
considerations.
While
surgical
sterilization
is
mainstay
pet
population
control,
there
a
need
for
efficient,
safe,
cost-effective
permanent
contraception
alternatives.
Herein,
we
report
evidence
that
single
intramuscular
treatment
with
an
adeno-associated
viral
vector
delivering
anti-Müllerian
hormone
transgene
produces
long-term
cat.
Treated
females
followed
over
two
years,
during
which
expression,
anti-transgene
antibodies,
reproductive
hormones
monitored.
Mating
behavior
success
measured
mating
studies.
Here
show
ectopic
expression
does
not
impair
sex
steroids
nor
estrous
cycling,
but
prevents
breeding-induced
ovulation,
resulting
safe
durable
female