RNA in formation and regulation of transcriptional condensates
RNA,
Journal Year:
2021,
Volume and Issue:
28(1), P. 52 - 57
Published: Nov. 12, 2021
Macroscopic
membraneless
organelles
containing
RNA
such
as
the
nucleoli,
germ
granules,
and
Cajal
body
have
been
known
for
decades.
These
biomolecular
condensates
are
liquid-like
bodies
that
can
be
formed
by
a
phase
transition.
Recent
evidence
has
revealed
presence
of
similar
microscopic
associated
with
transcription
genes.
This
brief
article
summarizes
thoughts
about
importance
in
regulation
how
molecules,
components
condensates,
control
synthesis
RNA.
Models
experimental
data
suggest
RNAs
from
enhancers
facilitate
formation
condensate
stabilizes
binding
factors
accounts
burst
at
promoter.
Termination
this
is
pictured
nonequilibrium
feedback
loop
where
additional
destabilizes
condensate.
Language: Английский
The multifaceted effects of YTHDC1-mediated nuclear m6A recognition
Trends in Genetics,
Journal Year:
2021,
Volume and Issue:
38(4), P. 325 - 332
Published: Dec. 14, 2021
Language: Английский
The epitranscriptome toolbox
Cell,
Journal Year:
2022,
Volume and Issue:
185(5), P. 764 - 776
Published: March 1, 2022
Language: Английский
Biomolecular condensates: new opportunities for drug discovery and RNA therapeutics
Trends in Pharmacological Sciences,
Journal Year:
2022,
Volume and Issue:
43(10), P. 820 - 837
Published: Aug. 23, 2022
Numerous
examples
now
exist
where
biomolecular
condensates
are
mechanistically
linked
to
disease.Small-molecule
drugs
used
in
the
clinic
today
can
interact
with
condensates,
whether
intended
or
not,
possibly
affecting
their
pharmacology.Recent
clinical
success
has
demonstrated
utility
of
RNA
therapeutics
help
patients
and
propelled
interest
this
field.Endogenous
is
a
key
constituent
both
physiological
pathological
potential
link
between
prospective
emerging.Understanding
interaction
small
molecules
may
improve
drug
discovery
process.
Biomolecular
organize
cellular
functions
absence
membranes.
These
membraneless
organelles
form
through
liquid–liquid
phase
separation
coalescing
proteins
into
well-defined,
yet
dynamic,
structures
distinct
from
surrounding
milieu.
disease-causing
processes
which
could
impact
several
ways.
First,
disruption
seeded
by
mutated
RNAs
provide
new
opportunities
treat
disease.
Second,
be
leveraged
tackle
difficult-to-drug
targets
lacking
binding
pockets
whose
function
depends
on
separation.
Third,
condensate-resident
display
unexpected
pharmacology.
We
discuss
therapeutics,
leveraging
concrete
examples,
towards
novel
opportunities.
Membraneless
organelles,
support
compartmentalization
spatiotemporal
regulation
biochemical
activities
inside
cells
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Y.
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C.P.
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S.F.
al.Biomolecular
condensates:
organizers
biochemistry.Nat.
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Scholar].
(hereafter
condensates),
term
coined
represent
coalescence
biomolecules
(see
Glossary)
like
[3.Banani
Scholar],
functional,
nonstoichiometric,
dynamic
assemblies
that,
membrane-bound
create
subcellular
environments
but
lack
enclosing
membranes
import/export
machinery.
Dynamism
discriminators
aggregates
(Box
1).
While
alternative
models
[4.Darzacq
X.
Tjian
R.
Weak
multivalent
interactions:
strength
versus
numbers
tug
war
implications
partitioning.RNA.
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(0)
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D.T.
al.Evaluating
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theoretical
modeling
experiments
purified
settings
notion
that
separation,
same
phenomenon
forming
oil
droplets
water,
contributes
condensate
formation
regulation.Box
1Condensates
aggregates,
contextThe
original
definition
all-inclusive,
was
intracellular
manner
does
not
involve
membrane
Phase
defined
as
demixing
two
(or
more)
phases,
while
transition
change
molecular
organization
within
system
changing
its
material
properties
liquid-to-solid.
Both
phenomena
at
play
context
condensates.Biomolecular
readily
differentiated
[9.Alberti
S.
Hyman
A.A.
nexus
stress,
protein
aggregation
disease
ageing.Nat.
196-213Crossref
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Here,
we
define
non-native,
nonfunctional
assemblies,
irreversible
timescale
without
involving
degradation
pathways.
Aggregates
often
misfolded
(and
RNA)
assume
non-native
conformation.
Importantly,
case
unstructured
proteins,
misfolding
lead
more
ordered
less-dynamic
structure,
causing
abnormal
interactions
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M.G.
era
amyloid
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For
further
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about
differences
shared
features
direct
reader
recent
review
Scholar].Certain
elements
explained
spontaneous,
thermodynamically
driven
events.
However,
describing
necessarily
reductionistic
cannot
fully
incorporate
complexity.
numerous
forced
undergo
settings.
occur
under
conditions
[126.Alberti
al.Considerations
challenges
studying
liquid-liquid
condensates.Cell.
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Full
Text
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The
reference
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Gladfelter
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only
generate
macromolecular
instance,
loading
static
active
concentration
volumes
motors
many
ways
analogous
formed
condensates.
Certain
Finally,
Recent
developments
field
have
illuminated
disease,
action
currently
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al.Genetic
variation
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H.R.
Young
R.A.
Learning
chemical
grammar
Chem.
(Published
online
June
27,
2022)https://doi.org/10.1038/s41589-022-01046-yCrossref
highlight
emerging
trends
likely
influence
discovery,
particularly
RNA-based
therapeutics.
mechanistic
dysregulated
how
therapeutic
approaches.
also
aid
modulation
modalities,
along
pharmacology
existing
therapies.
aim
readers
forward-looking
insights
integrates
evolving
fields
deliver
patients.
Intracellular
borrowing
concepts
polymer
science,
boundaries
effectively
substitute
lipid
permitting
diffusion
phases
(Figure
1A
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Scholar,3.Banani
Scholar,8.Riback
energy
reduction
caused
(by
satisfying
attractive
repulsive
intermolecular
forces)
opposes
entropy-driven
mixing
all
components.
In
simplest
form,
leads
two-phase
assumes
different
depending
constituents'
concentration,
strength,
valency,
parameters
temperature
pH.
result
liquid,
freely-fusing
assemblies;
present
continuum
1B)
Scholar,9.Alberti
forces
leading
RNA–RNA,
protein–RNA,
DNA–DNA,
protein–DNA,
protein–protein
interactions,
structured
domains
(e.g.,
modules)
intrinsically
disordered
regions
(IDRs)
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B.R.
nucleus.Trends
Biochem.
Sci.
45:
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A.
low
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Treeck
B.
self-assembly
defining
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Vale
R.D.
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repeat
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R.R.
sequence
structure
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described,
it
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M.M.
al.ALS/FTD-associated
C9ORF72
vitro
cells.Cell
Rep.
21:
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addition
controlled
spontaneous
events,
regulate
separation-driven
mesoscopic
objects,
differing
canonical,
stoichiometric
complexes.
Evidence
exists
scales,
architecture
1D)
structural
chromatin
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B.A.
al.Organization
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A.G.
al.Liquid
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HP1α
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heterochromatin.Nature.
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aberrant
looping
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Misteli
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genome
evolution.Trends
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al.Coexisting
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al.The
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transcriptome
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mRNA
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contribute
large-scale
suggested
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al.Liquid-liquid
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GM130.FEBS
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scaffold
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O.
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Language: Английский
Roles of RNA Modifications in Diverse Cellular Functions
Frontiers in Cell and Developmental Biology,
Journal Year:
2022,
Volume and Issue:
10
Published: March 8, 2022
Chemical
modifications
of
RNA
molecules
regulate
both
metabolism
and
fate.
The
deposition
function
these
are
mediated
by
the
actions
writer,
reader,
eraser
proteins.
At
cellular
level,
several
processes
including
cell
death,
proliferation,
senescence,
differentiation,
migration,
metabolism,
autophagy,
DNA
damage
response,
liquid-liquid
phase
separation.
Emerging
evidence
demonstrates
that
play
active
roles
in
physiology
etiology
multiple
diseases
due
to
their
pervasive
functions.
Here,
we
will
summarize
recent
advances
regulatory
functional
role
functions,
emphasizing
context-specific
mammalian
systems.
As
m
Language: Английский