Nature Communications,
Год журнала:
2018,
Номер
9(1)
Опубликована: Ноя. 26, 2018
Abstract
The
rate
of
caesarean
section
delivery
(CSD)
is
increasing
worldwide.
It
remains
unclear
whether
disruption
mother-to-neonate
transmission
microbiota
through
CSD
occurs
and
it
affects
human
physiology.
Here
we
perform
metagenomic
analysis
earliest
gut
microbial
community
structures
functions.
We
identify
differences
in
encoded
functions
between
microbiomes
vaginally
delivered
(VD)
neonates.
Several
functional
pathways
are
over-represented
VD
neonates,
including
lipopolysaccharide
(LPS)
biosynthesis.
link
these
enriched
to
individual-specific
strains,
which
transmitted
from
mothers
neonates
case
VD.
stimulation
primary
immune
cells
with
LPS
isolated
early
stool
samples
results
higher
levels
tumour
necrosis
factor
(TNF-α)
interleukin
18
(IL-18).
Accordingly,
the
observed
TNF-α
IL-18
neonatal
blood
plasma
after
Taken
together,
our
support
that
disrupts
specific
linked
repertoires
immune-stimulatory
potential
during
a
critical
window
for
system
priming.
Culture-independent
analyses
of
microbial
communities
have
progressed
dramatically
in
the
last
decade,
particularly
due
to
advances
methods
for
biological
profiling
via
shotgun
metagenomics.
Opportunities
improvement
continue
accelerate,
with
greater
access
multi-omics,
reference
genomes,
and
strain-level
diversity.
To
leverage
these,
we
present
bioBakery
3,
a
set
integrated,
improved
taxonomic,
strain-level,
functional,
phylogenetic
metagenomes
newly
developed
build
on
largest
sequences
now
available.
Compared
current
alternatives,
MetaPhlAn
3
increases
accuracy
taxonomic
profiling,
HUMAnN
improves
that
functional
potential
activity.
These
detected
novel
disease-microbiome
links
applications
CRC
(1262
metagenomes)
IBD
(1635
817
metatranscriptomes).
Strain-level
an
additional
4077
StrainPhlAn
PanPhlAn
unraveled
structure
common
gut
microbe
Ruminococcus
bromii
,
previously
described
by
only
15
isolate
genomes.
With
open-source
implementations
cloud-deployable
reproducible
workflows,
platform
can
help
researchers
deepen
resolution,
scale,
multi-omic
community
studies.
Cell,
Год журнала:
2019,
Номер
176(3), С. 649 - 662.e20
Опубликована: Янв. 1, 2019
The
body-wide
human
microbiome
plays
a
role
in
health,
but
its
full
diversity
remains
uncharacterized,
particularly
outside
of
the
gut
and
international
populations.
We
leveraged
9,428
metagenomes
to
reconstruct
154,723
microbial
genomes
(45%
high
quality)
spanning
body
sites,
ages,
countries,
lifestyles.
recapitulated
4,930
species-level
genome
bins
(SGBs),
77%
without
public
repositories
(unknown
SGBs
[uSGBs]).
uSGBs
are
prevalent
(in
93%
well-assembled
samples),
expand
underrepresented
phyla,
enriched
non-Westernized
populations
(40%
total
SGBs).
annotated
2.85
M
genes
SGBs,
many
associated
with
conditions
including
infant
development
(94,000)
or
Westernization
(106,000).
permit
deeper
analyses
increase
average
mappability
metagenomic
reads
from
67.76%
87.51%
(median
94.26%)
65.14%
82.34%
mouth.
thus
identify
thousands
yet-to-be-named
species,
pangenomes
human-associated
microbes,
allow
better
exploitation
technologies.
Nature,
Год журнала:
2019,
Номер
568(7753), С. 499 - 504
Опубликована: Фев. 11, 2019
The
composition
of
the
human
gut
microbiota
is
linked
to
health
and
disease,
but
knowledge
individual
microbial
species
needed
decipher
their
biological
roles.
Despite
extensive
culturing
sequencing
efforts,
complete
bacterial
repertoire
remains
undefined.
Here
we
identify
1,952
uncultured
candidate
by
reconstructing
92,143
metagenome-assembled
genomes
from
11,850
microbiomes.
These
substantially
expand
known
collective
microbiota,
with
a
281%
increase
in
phylogenetic
diversity.
Although
newly
identified
are
less
prevalent
well-studied
populations
compared
reference
isolate
genomes,
they
improve
classification
understudied
African
South
American
samples
more
than
200%.
encode
hundreds
biosynthetic
gene
clusters
possess
distinctive
functional
capacity
that
might
explain
elusive
nature.
Our
work
expands
diversity
bacteria,
which
provides
unprecedented
resolution
for
taxonomic
characterization
intestinal
microbiota.
The Journal of Experimental Medicine,
Год журнала:
2018,
Номер
216(1), С. 20 - 40
Опубликована: Окт. 15, 2018
Over
the
past
decade,
our
view
of
human-associated
microbes
has
expanded
beyond
that
a
few
species
toward
an
appreciation
diverse
and
niche-specialized
microbial
communities
develop
in
human
host
with
chronological
age.
The
largest
reservoir
exists
distal
gastrointestinal
tract,
both
lumen,
where
facilitate
primary
secondary
metabolism,
on
mucosal
surfaces,
they
interact
immune
cell
populations.
While
local
microbial-driven
immunomodulation
gut
is
well
described,
more
recent
studies
have
demonstrated
role
for
microbiome
influencing
remote
organs
hematopoietic
function.
Unsurprisingly,
therefore,
perturbation
to
composition
function
microbiota
been
associated
chronic
diseases
ranging
from
inflammatory
metabolic
conditions
neurological,
cardiovascular,
respiratory
illnesses.
Considerable
effort
currently
focused
understanding
natural
history
development
humans
context
health
outcomes,
parallel
improving
knowledge
microbiome-host
molecular
interactions.
These
efforts
ultimately
aim
effective
approaches
rehabilitate
perturbed
ecosystems
as
means
restore
or
prevent
disease.
This
review
details
modulating
focus
discusses
strategies
manipulating
management
prevention
conditions.
Nature Biotechnology,
Год журнала:
2023,
Номер
41(11), С. 1633 - 1644
Опубликована: Фев. 23, 2023
Abstract
Metagenomic
assembly
enables
new
organism
discovery
from
microbial
communities,
but
it
can
only
capture
few
abundant
organisms
most
metagenomes.
Here
we
present
MetaPhlAn
4,
which
integrates
information
metagenome
assemblies
and
isolate
genomes
for
more
comprehensive
metagenomic
taxonomic
profiling.
From
a
curated
collection
of
1.01
M
prokaryotic
reference
metagenome-assembled
genomes,
define
unique
marker
genes
26,970
species-level
genome
bins,
4,992
them
taxonomically
unidentified
at
the
species
level.
4
explains
~20%
reads
in
international
human
gut
microbiomes
>40%
less-characterized
environments
such
as
rumen
microbiome
proves
accurate
than
available
alternatives
on
synthetic
evaluations
while
also
reliably
quantifying
with
no
cultured
isolates.
Application
method
to
>24,500
metagenomes
highlights
previously
undetected
be
strong
biomarkers
host
conditions
lifestyles
mouse
shows
that
even
uncharacterized
genetically
profiled
resolution
single
strains.
Trends in Microbiology,
Год журнала:
2019,
Номер
27(12), С. 997 - 1010
Опубликована: Авг. 29, 2019
Appreciation
of
the
importance
gut
microbiome
is
growing,
and
it
becoming
increasingly
relevant
to
identify
preventive
or
therapeutic
solutions
targeting
it.
The
composition
function
microbiota
are
relatively
well
described
for
infants
(less
than
3
years)
adults,
but
have
been
largely
overlooked
in
pre-school
(3-6
primary
school-age
(6-12
children,
as
teenagers
(12-18
years).
Early
reports
suggested
that
infant
would
attain
an
adult-like
structure
at
age
years,
recent
studies
development
may
take
longer.
This
time
key
because
there
evidence
suggest
deviations
this
consequences
later
life.
In
review,
we
provide
overview
current
knowledge
concerning
microbiota,
its
evolution,
variation,
response
dietary
challenges
during
first
decade
life
with
a
focus
on
healthy
children
(up
12
from
various
populations
around
globe.
should
facilitate
identification
diet-based
approaches
individuals
group,
promote
It
is
well
established
that
the
gut
microbiota
plays
an
important
role
in
host
health
and
perturbed
by
several
factors
including
antibiotics.
Antibiotic-induced
changes
microbial
composition
can
have
a
negative
impact
on
reduced
diversity,
functional
attributes
of
microbiota,
formation,
selection
antibiotic-resistant
strains
making
hosts
more
susceptible
to
infection
with
pathogens
such
as
Clostridioides
difficile.
Antibiotic
resistance
global
crisis
increased
use
antibiotics
over
time
warrants
investigation
into
its
effects
health.
In
this
review,
we
discuss
adverse
thus
health,
suggest
alternative
approaches
antibiotic
use.