Military Medical Research,
Journal Year:
2023,
Volume and Issue:
10(1)
Published: Aug. 17, 2023
Abstract
The
respiratory
system’s
complex
cellular
heterogeneity
presents
unique
challenges
to
researchers
in
this
field.
Although
bulk
RNA
sequencing
and
single-cell
(scRNA-seq)
have
provided
insights
into
cell
types
the
system,
relevant
specific
spatial
localization
interactions
not
been
clearly
elucidated.
Spatial
transcriptomics
(ST)
has
filled
gap
widely
used
studies.
This
review
focuses
on
latest
iterative
technology
of
ST
recent
years,
summarizing
how
can
be
applied
physiological
pathological
processes
with
emphasis
lungs.
Finally,
current
potential
development
directions
are
proposed,
including
high-throughput
full-length
transcriptome,
integration
multi-omics,
temporal
omics,
bioinformatics
analysis,
etc.
These
viewpoints
expected
advance
study
systematic
mechanisms,
Genome Medicine,
Journal Year:
2024,
Volume and Issue:
16(1)
Published: Jan. 12, 2024
Abstract
Optimal
integration
of
transcriptomics
data
and
associated
spatial
information
is
essential
towards
fully
exploiting
to
dissect
tissue
heterogeneity
map
out
inter-cellular
communications.
We
present
SEDR,
which
uses
a
deep
autoencoder
coupled
with
masked
self-supervised
learning
mechanism
construct
low-dimensional
latent
representation
gene
expression,
then
simultaneously
embedded
the
corresponding
through
variational
graph
autoencoder.
SEDR
achieved
higher
clustering
performance
on
manually
annotated
10
×
Visium
datasets
better
scalability
high-resolution
than
existing
methods.
Additionally,
we
show
SEDR’s
ability
impute
denoise
expression
(URL:
https://github.com/JinmiaoChenLab/SEDR/
).
Genomics,
Journal Year:
2023,
Volume and Issue:
115(5), P. 110671 - 110671
Published: June 21, 2023
The
diverse
cell
types
of
an
organ
have
a
highly
structured
organization
to
enable
their
efficient
and
correct
function.
To
fully
appreciate
gene
functions
in
given
type,
one
needs
understand
how
much,
when
where
the
is
expressed.
Classic
bulk
RNA
sequencing
popular
single
destroy
structural
fail
provide
spatial
information.
However,
location
expression
or
complex
tissue
provides
key
clues
comprehend
neighboring
genes
cells
cross
talk,
transduce
signals
work
together
as
team
complete
job.
functional
requirement
for
content
has
been
driving
force
rapid
development
transcriptomics
technologies
past
few
years.
Here,
we
present
overview
current
with
special
focus
on
commercially
available
currently
being
commercialized
technologies,
highlight
applications
by
category
discuss
experimental
considerations
first
experiment.
Cell Systems,
Journal Year:
2023,
Volume and Issue:
14(5), P. 404 - 417.e4
Published: May 1, 2023
Cell
populations
in
the
tumor
microenvironment
(TME),
including
their
abundance,
composition,
and
spatial
location,
are
critical
determinants
of
patient
response
to
therapy.
Recent
advances
transcriptomics
(ST)
have
enabled
comprehensive
characterization
gene
expression
TME.
However,
popular
ST
platforms,
such
as
Visium,
only
measure
low-resolution
spots
large
tissue
areas
that
not
covered
by
any
spots,
which
limits
usefulness
studying
detailed
structure
Here,
we
present
TESLA,
a
machine
learning
framework
for
annotation
with
pixel-level
resolution
ST.
TESLA
integrates
histological
information
annotate
heterogeneous
immune
cells
directly
on
histology
image.
further
detects
unique
TME
features
tertiary
lymphoid
structures,
represents
promising
avenue
understanding
architecture
Although
mainly
illustrated
applications
cancer,
can
also
be
applied
other
diseases.
Nature Methods,
Journal Year:
2024,
Volume and Issue:
unknown
Published: March 20, 2024
Abstract
Spatially
resolved
omics
technologies
are
transforming
our
understanding
of
biological
tissues.
However,
the
handling
uni-
and
multimodal
spatial
datasets
remains
a
challenge
owing
to
large
data
volumes,
heterogeneity
types
lack
flexible,
spatially
aware
structures.
Here
we
introduce
SpatialData,
framework
that
establishes
unified
extensible
multiplatform
file-format,
lazy
representation
larger-than-memory
data,
transformations
alignment
common
coordinate
systems.
SpatialData
facilitates
annotations
cross-modal
aggregation
analysis,
utility
which
is
illustrated
in
context
multiple
vignettes,
including
integrative
analysis
on
Xenium
Visium
breast
cancer
study.
Nature Biotechnology,
Journal Year:
2023,
Volume and Issue:
42(2), P. 284 - 292
Published: May 25, 2023
Currently
available
single-cell
omics
technologies
capture
many
unique
features
with
different
biological
information
content.
Data
integration
aims
to
place
cells,
captured
technologies,
onto
a
common
embedding
facilitate
downstream
analytical
tasks.
Current
horizontal
data
techniques
use
set
of
features,
thereby
ignoring
non-overlapping
and
losing
information.
Here
we
introduce
StabMap,
mosaic
technique
that
stabilizes
mapping
by
exploiting
the
features.
StabMap
first
infers
topology
based
on
shared
then
projects
all
cells
supervised
or
unsupervised
reference
coordinates
traversing
shortest
paths
along
topology.
We
show
performs
well
in
various
simulation
contexts,
facilitates
'multi-hop'
where
some
datasets
do
not
share
any
enables
spatial
gene
expression
for
dissociated
transcriptomic
reference.
bioRxiv (Cold Spring Harbor Laboratory),
Journal Year:
2023,
Volume and Issue:
unknown
Published: Dec. 8, 2023
Emerging
imaging
spatial
transcriptomics
(iST)
platforms
and
coupled
analytical
methods
can
recover
cell-to-cell
interactions,
groups
of
spatially
covarying
genes,
gene
signatures
associated
with
pathological
features,
are
thus
particularly
well-suited
for
applications
in
formalin
fixed
paraffin
embedded
(FFPE)
tissues.
Here,
we
benchmarked
the
performance
three
commercial
iST
on
serial
sections
from
tissue
microarrays
(TMAs)
containing
23
tumor
normal
types
both
relative
technical
biological
performance.
On
matched
found
that
10x
Xenium
shows
higher
transcript
counts
per
without
sacrificing
specificity,
but
all
concord
to
orthogonal
RNA-seq
datasets
perform
resolved
cell
typing,
albeit
different
false
discovery
rates,
segmentation
error
frequencies,
varying
degrees
sub-clustering
downstream
analyses.
Taken
together,
our
analyses
provide
a
comprehensive
benchmark
guide
choice
method
as
researchers
design
studies
precious
samples
this
rapidly
evolving
field.
bioRxiv (Cold Spring Harbor Laboratory),
Journal Year:
2023,
Volume and Issue:
unknown
Published: Feb. 14, 2023
Abstract
The
Xenium
In
Situ
platform
is
a
new
spatial
transcriptomics
product
commercialized
by
10X
Genomics
capable
of
mapping
hundreds
transcripts
in
situ
at
subcellular
resolution.
Given
the
multitude
commercially
available
technologies,
recommendations
choice
and
analysis
guidelines
are
increasingly
important.
Herein,
we
explore
eight
preview
datasets
mouse
brain
two
human
breast
cancer
comparing
scalability,
resolution,
data
quality,
capacities
limitations
with
other
spatially
resolved
technologies.
addition,
benchmarked
performance
multiple
open
source
computational
tools
when
applied
to
tasks
including
cell
segmentation,
segmentation-free
analysis,
selection
variable
genes
domain
identification,
among
others.
This
study
serves
as
first
independent
Xenium,
provides
best-practices
for
such
datasets.
bioRxiv (Cold Spring Harbor Laboratory),
Journal Year:
2023,
Volume and Issue:
unknown
Published: Dec. 14, 2023
Abstract
Spatial
transcriptomics
is
a
rapidly
evolving
field,
overwhelmed
by
multitude
of
technologies.
This
study
aims
to
offer
comparative
analysis
datasets
generated
from
leading
in
situ
imaging
platforms.
We
have
spatial
data
serial
sections
prostate
adenocarcinoma
using
the
10x
Genomics
Xenium
and
NanoString
CosMx
SMI
Additionally,
orthogonal
single-nucleus
RNA
sequencing
(snRNA-seq)
was
performed
on
same
FFPE
tissue
establish
reference
for
tumor’s
transcriptional
profiles.
assessed
various
technical
aspects,
such
as
reproducibility,
sensitivity,
dynamic
range,
cell
segmentation,
type
annotation,
congruence
with
single-cell
profiling.
The
practicality
assessing
cellular
organization
biomarker
localization
evaluated.
Although
fewer
genes
are
measured
(CosMx:
960,
Xenium:
377,
an
overlap
125),
consistently
demonstrates
higher
broader
better
alignment
Conversely,
CosMx’s
out-of-the-box
segmentation
outperformed
Xenium’s,
resulting
noticeable
transcript
misassignment
within
certain
areas.
However,
impact
this
cells’
profile
minimal.
Together,
comprehensive
comparison
two
commercial
platforms
provides
essential
metrics
their
performance,
offering
invaluable
insights
future
research
technological
advancements
field.