bioRxiv (Cold Spring Harbor Laboratory),
Год журнала:
2024,
Номер
unknown
Опубликована: Июнь 6, 2024
Summary
The
abundance
of
various
cell
types
can
vary
significantly
among
patients
with
varying
phenotypes
and
even
those
the
same
phenotype.
Recent
scientific
advancements
provide
mounting
evidence
that
other
clinical
variables,
such
as
age,
gender,
lifestyle
habits,
also
influence
certain
types.
However,
current
methods
for
integrating
single-cell-level
omics
data
variables
are
inadequate.
In
this
study,
we
propose
a
regularized
Bayesian
Dirichlet-multinomial
regression
framework
to
investigate
relationship
between
single-cell
RNA
sequencing
patient-level
data.
Additionally,
model
employs
novel
hierarchical
tree
structure
identify
relationships
at
different
cell-type
levels.
Our
successfully
uncovers
significant
associations
specific
across
three
distinct
diseases:
pulmonary
fibrosis,
COVID-19,
non-small
lung
cancer.
This
integrative
analysis
provides
biological
insights
could
potentially
inform
interventions
diseases.
Regulatory
T
cells
(Tregs),
an
essential
component
of
the
human
immune
system,
are
a
heterogeneous
group
lymphocytes
with
ability
to
suppress
responses
and
maintain
homeostasis.
Recent
evidence
indicates
that
Tregs
may
impair
antitumor
immunity
facilitate
cancer
progression
by
weakening
functions
effector
(Teffs).
Consequently,
targeting
eliminate
them
from
tumor
microenvironments
improve
Teffs'
activity
could
emerge
as
effective
strategy
for
immunotherapy.
This
review
outlines
biology
Tregs,
detailing
their
origins,
classification,
crucial
markers.
Our
focus
lies
on
complex
role
in
cancer's
development,
treatment,
particularly
suppressive
upon
via
multiple
mechanisms.
We
delve
into
Tregs'
involvement
checkpoint
blockade
(ICB)
therapy,
dual
effect
immunotherapy
potential
biomarkers
ICB
therapy
effectiveness.
also
summarize
advances
therapies
adjust
optimize
which
be
devising
innovative
treatment
strategies.
Pancreatic
ductal
adenocarcinoma
(PDAC)
is
a
highly
aggressive
cancer
characterized
by
late
diagnosis,
rapid
progression,
and
high
mortality
rate.
Its
complex
biology,
dense,
stromal
tumor
environment
with
an
immunosuppressive
milieu,
contributes
to
resistance
against
standard
treatments
like
chemotherapy
radiation.
This
comprehensive
review
explores
the
dynamic
role
of
microbiome
in
modulating
efficacy
outcomes
PDAC.
It
delves
into
microbiome's
impact
on
drug
metabolism
resistance,
interaction
between
microbial
elements,
drugs,
human
biology.
We
also
highlight
significance
specific
bacterial
species
enzymes
influencing
action
immune
response
microenvironment.
Cutting-edge
methodologies,
including
artificial
intelligence,
low-biomass
analysis
patient-derived
organoid
models,
are
discussed,
offering
insights
nuanced
interactions
microbes
cells.
The
potential
microbiome-based
interventions
as
adjuncts
conventional
PDAC
paving
way
for
personalized
therapy
approaches.
synthesizes
recent
research
provide
in-depth
understanding
how
affects
efficacy.
focuses
elucidating
key
mechanisms
identifying
existing
knowledge
gaps.
Addressing
these
gaps
crucial
enhancing
medicine
refining
treatment
strategies,
ultimately
improving
patient
outcomes.
Cancer Letters,
Год журнала:
2024,
Номер
597, С. 217086 - 217086
Опубликована: Июнь 28, 2024
Immune
checkpoint
blockade
(ICB)
has
had
limited
utility
in
several
solid
tumors
such
as
breast
cancer,
a
major
cause
of
cancer-related
mortality
women.
Therefore,
there
is
considerable
interest
alternate
strategies
to
promote
an
anti-cancer
immune
response.
A
paper
co-published
this
issue
describes
how
NR0B2,
protein
involved
cholesterol
homeostasis,
functions
within
myeloid
cells
modulate
the
inflammasome
and
reduce
expansion
immune-suppressive
regulatory
T
(T
ABSTRACT
The
abundance
of
various
cell
types
can
vary
significantly
among
patients
with
varying
phenotypes
and
even
those
the
same
phenotype.
Recent
scientific
advancements
provide
mounting
evidence
that
other
clinical
variables,
such
as
age,
gender,
lifestyle
habits,
also
influence
certain
types.
However,
current
methods
for
integrating
single-cell-level
omics
data
variables
are
inadequate.
In
this
study,
we
propose
a
regularized
Bayesian
Dirichlet-multinomial
regression
framework
to
investigate
relationship
between
single-cell
RNA
sequencing
patient-level
data.
Additionally,
model
employs
novel
hierarchical
tree
structure
identify
relationships
at
different
cell-type
levels.
Our
successfully
uncovers
significant
associations
specific
across
three
distinct
diseases:
pulmonary
fibrosis,
COVID-19,
non-small
lung
cancer.
This
integrative
analysis
provides
biological
insights
could
potentially
inform
interventions
diseases.
PeerJ,
Год журнала:
2025,
Номер
13, С. e19024 - e19024
Опубликована: Фев. 25, 2025
Background
One
of
the
effective
strategies
for
treatment
tumor
diseases,
including
colitis-associated
colorectal
cancer
(CAC),
is
immunotherapy.
During
inflammation,
NF-κB
activated,
which
connected
with
hypoxia-inducible
factor—HIF,
regulating
immune
cells
functioning
and
influences
CAC
development.
Organisms
differ
according
to
their
hypoxia
resistance
HIF
expression.
Therefore,
aim
study
was
characterize
thymus,
spleen
mesenteric
lymph
nodes
morphofunctional
features,
as
well
changes
in
subpopulation
composition
peripheral
blood
tolerant
susceptible
C57Bl/6
mice
CAC.
Methods
Hypoxia
tolerance
assessed
by
gasping
time
measurement
hypobaric
decompression
chamber.
Based
on
outcome,
were
assigned
three
groups
characterized
‘tolerant
hypoxia’,
‘normal’,
‘susceptible
hypoxia’.
A
month
after
determining
modeled
intraperitoneal
azoxymethane
(AOM)
administration
cycles
dextran
sulfate
sodium
consumption.
Mice
sacrificed
141st
day
AOM
administration,
a
morphological,
morphometric
immunohistochemical
tumors,
morphological
thymus
spleen,
assessment
carried
out.
Results
Tumors
represented
glandular
intraepithelial
neoplasia
adenocarcinomas,
area
larger
mice.
Immunohistochemical
revealed
more
pronounced
Ki-67+
staining
tumors
In
CAC,
only
mice,
expansion
thymic
cortex
observed
relative
control
group,
while
ones,
no
detected.
Only
germinal
centers
lymphoid
follicles
enlargement
observed.
during
comparison
absolute
number
B-lymphocytes
relative—cytotoxic
T-lymphocytes
increased.
The
cytotoxic
NK
higher
compared
ones.
revealed—only
them
cells,
increased,
macrophages
decreased.
Conclusions
Morphofunctional
differences
reactions
indicated
response
development
should
be
taken
into
account
experimental
studies.