Nature Communications,
Journal Year:
2025,
Volume and Issue:
16(1)
Published: April 21, 2025
Identifying
cell
types
and
states
remains
a
time-consuming,
error-prone
challenge
for
spatial
biology.
While
deep
learning
increasingly
plays
role,
it
is
difficult
to
generalize
due
variability
at
the
level
of
cells,
neighborhoods,
niches
in
health
disease.
To
address
this,
we
develop
TACIT,
an
unsupervised
algorithm
annotation
using
predefined
signatures
that
operates
without
training
data.
TACIT
uses
unbiased
thresholding
distinguish
positive
cells
from
background,
focusing
on
relevant
markers
identify
ambiguous
multiomic
assays.
Using
five
datasets
(5,000,000
cells;
51
types)
three
(brain,
intestine,
gland),
outperforms
existing
methods
accuracy
scalability.
Integrating
TACIT-identified
reveals
new
phenotypes
two
inflammatory
gland
diseases.
Finally,
combined
transcriptomics
proteomics,
discover
under-
overrepresented
immune
regions
interest,
suggesting
multimodality
essential
translating
biology
clinical
applications.
Nature,
Journal Year:
2023,
Volume and Issue:
619(7970), P. 572 - 584
Published: July 19, 2023
Abstract
The
intestine
is
a
complex
organ
that
promotes
digestion,
extracts
nutrients,
participates
in
immune
surveillance,
maintains
critical
symbiotic
relationships
with
microbiota
and
affects
overall
health
1
.
intesting
has
length
of
over
nine
metres,
along
which
there
are
differences
structure
function
2
localization
individual
cell
types,
type
development
trajectories
detailed
transcriptional
programs
probably
drive
these
function.
Here,
to
better
understand
differences,
we
evaluated
the
organization
single
cells
using
multiplexed
imaging
single-nucleus
RNA
open
chromatin
assays
across
eight
different
intestinal
sites
from
donors.
Through
systematic
analyses,
find
compositions
differ
substantially
regions
demonstrate
complexity
epithelial
subtypes,
same
types
organized
into
distinct
neighbourhoods
communities,
highlighting
immunological
niches
present
intestine.
We
also
map
gene
regulatory
suggestive
differentiation
cascade,
associate
disease
heritability
specific
types.
These
results
describe
composition,
regulation
for
this
organ,
serve
as
an
important
reference
understanding
human
biology
disease.
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.
Genome biology,
Journal Year:
2022,
Volume and Issue:
23(1)
Published: Dec. 13, 2022
Abstract
Spatial
omics
technologies
enable
a
deeper
understanding
of
cellular
organizations
and
interactions
within
tissue
interest.
These
assays
can
identify
specific
compartments
or
regions
in
with
differential
transcript
protein
abundance,
delineate
their
interactions,
complement
other
methods
defining
phenotypes.
A
variety
spatial
methodologies
are
being
developed
commercialized;
however,
these
techniques
differ
resolution,
multiplexing
capability,
scale/throughput,
coverage.
Here,
we
review
the
current
prospective
landscape
single
cell
to
subcellular
resolution
analysis
tools
provide
comprehensive
picture
for
both
research
clinical
applications.
Nature Communications,
Journal Year:
2023,
Volume and Issue:
14(1)
Published: Aug. 1, 2023
Abstract
While
technologies
for
multiplexed
imaging
have
provided
an
unprecedented
understanding
of
tissue
composition
in
health
and
disease,
interpreting
this
data
remains
a
significant
computational
challenge.
To
understand
the
spatial
organization
how
it
relates
to
disease
processes,
studies
typically
focus
on
cell-level
phenotypes.
However,
images
can
capture
biologically
important
objects
that
are
outside
cells,
such
as
extracellular
matrix.
Here,
we
describe
pipeline,
Pixie,
achieves
robust
quantitative
annotation
pixel-level
features
using
unsupervised
clustering
show
its
application
across
variety
biological
contexts
platforms.
Furthermore,
current
cell
phenotyping
strategies
rely
be
labor
intensive
require
large
amounts
manual
cluster
adjustments.
We
demonstrate
pixel
clusters
lie
within
cells
used
improve
annotations.
comprehensively
evaluate
pre-processing
steps
parameter
choices
optimize
performance
quantify
reproducibility
our
method.
Importantly,
Pixie
is
open
source
easily
customizable
through
user-friendly
interface.
Nature Communications,
Journal Year:
2024,
Volume and Issue:
15(1)
Published: Jan. 2, 2024
Highly
multiplexed
protein
imaging
is
emerging
as
a
potent
technique
for
analyzing
distribution
within
cells
and
tissues
in
their
native
context.
However,
existing
cell
annotation
methods
utilizing
high-plex
spatial
proteomics
data
are
resource
intensive
necessitate
iterative
expert
input,
thereby
constraining
scalability
practicality
extensive
datasets.
We
introduce
MAPS
(Machine
learning
Analysis
of
Proteomics
Spatial
biology),
machine
approach
facilitating
rapid
precise
type
identification
with
human-level
accuracy
from
data.
Validated
on
multiple
in-house
publicly
available
MIBI
CODEX
datasets,
outperforms
current
techniques
terms
speed
accuracy,
achieving
pathologist-level
precision
even
typically
challenging
types,
including
tumor
immune
origin.
By
democratizing
rapidly
deployable
scalable
annotation,
holds
significant
potential
to
expedite
advances
tissue
biology
disease
comprehension.
Cell,
Journal Year:
2024,
Volume and Issue:
187(25), P. 7045 - 7063
Published: Dec. 1, 2024
Cells
are
essential
to
understanding
health
and
disease,
yet
traditional
models
fall
short
of
modeling
simulating
their
function
behavior.
Advances
in
AI
omics
offer
groundbreaking
opportunities
create
an
virtual
cell
(AIVC),
a
multi-scale,
multi-modal
large-neural-network-based
model
that
can
represent
simulate
the
behavior
molecules,
cells,
tissues
across
diverse
states.
This
Perspective
provides
vision
on
design
how
collaborative
efforts
build
AIVCs
will
transform
biological
research
by
allowing
high-fidelity
simulations,
accelerating
discoveries,
guiding
experimental
studies,
offering
new
for
cellular
functions
fostering
interdisciplinary
collaborations
open
science.