PLoS ONE,
Journal Year:
2020,
Volume and Issue:
15(12), P. e0244385 - e0244385
Published: Dec. 21, 2020
Resorting
to
a
One
Strain
Many
Compounds
(OSMAC)
approach,
the
marine
Streptomyces
sp.
BRB081
strain
was
grown
in
six
different
media
settings
over
1,
2,
3
or
7
days.
Extractions
of
mycelium
and
broth
were
conducted
separately
for
each
cultivation
period
by
sonication
using
methanol/acetone
1:1
agitation
with
ethyl
acetate,
respectively.
All
acetate
crude
extracts
analysed
HPLC-MS/MS
data
treatment
performed
through
GNPS
platform
MZmine
2
software.
In
parallel,
genome
sequenced,
assembled
mined
search
biosynthetic
gene
clusters
(BGC)
secondary
metabolites
AntiSMASH
5.0
Spectral
library
tool
allowed
annotation
desferrioxamines,
fatty
acid
amides,
diketopiperazines,
xanthurenic
and,
remarkably,
cyclic
octapeptides
surugamides.
Molecular
network
analysis
observation
surugamides
cluster,
where
surugamide
A
protonated
molecule
corresponding
B-E
isomers,
as
well
two
potentially
new
analogues,
detected.
Data
software
distinguish
that
largest
amount
obtained
cultivating
SCB
medium
during
days
extraction
culture
broth.
Using
same
treatment,
chemical
barcode
created
easy
visualization
comparison
produced
overtime
all
media.
By
mining
four
regions
detected
supporting
metabolic
data.
Cytotoxic
evaluation
MTT
assay
revealed
highest
bioactivity
also
observed
optimal
conditions
those
production,
suggesting
these
be
main
active
compounds
herein.
This
method
identification
guided
selection
best
production
bioactive
compounds.
Marine Drugs,
Journal Year:
2019,
Volume and Issue:
17(4), P. 220 - 220
Published: April 11, 2019
The
emergence
of
antibiotic
resistance
and
viruses
with
high
epidemic
potential
made
unexplored
marine
environments
an
appealing
target
source
for
new
metabolites.
Marine
fungi
represent
one
the
most
suitable
sources
discovery
compounds.
Thus,
aim
this
work
was
(i)
to
isolate
identify
associated
Atlantic
sponge
Journal of Industrial Microbiology & Biotechnology,
Journal Year:
2021,
Volume and Issue:
48(3-4)
Published: Jan. 1, 2021
Abstract
Actinomycetes
are
a
rich
source
of
bioactive
natural
products
important
for
novel
drug
leads.
Recent
genome
mining
approaches
have
revealed
an
enormous
number
secondary
metabolite
biosynthetic
gene
clusters
(smBGCs)
in
actinomycetes.
However,
under
standard
laboratory
culture
conditions,
many
smBGCs
silent
or
cryptic.
To
activate
these
dormant
smBGCs,
several
approaches,
including
culture-based
genetic
engineering-based
strategies,
been
developed.
Above
all,
coculture
is
promising
approach
to
induce
production
from
actinomycetes
by
mimicking
ecological
habitat
where
cryptic
may
be
activated.
In
this
review,
we
introduce
studies
that
aim
expand
the
chemical
diversity
actinomycetes,
categorizing
cases
type
partner.
Furthermore,
discuss
current
challenges
need
overcome
support
elicitation
compounds
PLoS ONE,
Journal Year:
2020,
Volume and Issue:
15(12), P. e0244385 - e0244385
Published: Dec. 21, 2020
Resorting
to
a
One
Strain
Many
Compounds
(OSMAC)
approach,
the
marine
Streptomyces
sp.
BRB081
strain
was
grown
in
six
different
media
settings
over
1,
2,
3
or
7
days.
Extractions
of
mycelium
and
broth
were
conducted
separately
for
each
cultivation
period
by
sonication
using
methanol/acetone
1:1
agitation
with
ethyl
acetate,
respectively.
All
acetate
crude
extracts
analysed
HPLC-MS/MS
data
treatment
performed
through
GNPS
platform
MZmine
2
software.
In
parallel,
genome
sequenced,
assembled
mined
search
biosynthetic
gene
clusters
(BGC)
secondary
metabolites
AntiSMASH
5.0
Spectral
library
tool
allowed
annotation
desferrioxamines,
fatty
acid
amides,
diketopiperazines,
xanthurenic
and,
remarkably,
cyclic
octapeptides
surugamides.
Molecular
network
analysis
observation
surugamides
cluster,
where
surugamide
A
protonated
molecule
corresponding
B-E
isomers,
as
well
two
potentially
new
analogues,
detected.
Data
software
distinguish
that
largest
amount
obtained
cultivating
SCB
medium
during
days
extraction
culture
broth.
Using
same
treatment,
chemical
barcode
created
easy
visualization
comparison
produced
overtime
all
media.
By
mining
four
regions
detected
supporting
metabolic
data.
Cytotoxic
evaluation
MTT
assay
revealed
highest
bioactivity
also
observed
optimal
conditions
those
production,
suggesting
these
be
main
active
compounds
herein.
This
method
identification
guided
selection
best
production
bioactive
compounds.