Alzheimer s & Dementia,
Journal Year:
2021,
Volume and Issue:
18(5), P. 988 - 1007
Published: Sept. 28, 2021
Abstract
Studies
supporting
a
strong
association
between
tau
deposition
and
neuronal
loss,
neurodegeneration,
cognitive
decline
have
heightened
the
allure
of
tau‐related
mechanisms
as
therapeutic
targets.
In
February
2020,
leading
experts
from
around
world
convened
for
first‐ever
Tau2020
Global
Conference
in
Washington,
DC,
co‐organized
cosponsored
by
Rainwater
Charitable
Foundation,
Alzheimer's
Association,
CurePSP.
Representing
academia,
industry,
government,
philanthropic
sector,
presenters
attendees
discussed
recent
advances
current
directions
research.
The
meeting
provided
unique
opportunity
to
move
research
forward
fostering
global
partnerships
among
other
stakeholders
providing
support
new
drug
discovery
programs,
groundbreaking
research,
emerging
researchers.
also
an
present
critical
research‐advancing
tools
insights
that
are
now
rapidly
accelerating
pace
Frontiers in Neurology,
Journal Year:
2021,
Volume and Issue:
11
Published: Jan. 7, 2021
Post-translational
modifications
(PTMs)
on
tau
have
long
been
recognized
as
affecting
protein
function
and
contributing
to
neurodegeneration.
The
explosion
of
information
potential
observed
PTMs
provides
an
opportunity
better
understand
these
in
the
context
homeostasis,
which
becomes
perturbed
with
aging
disease.
Prevailing
views
regard
a
that
undergoes
abnormal
phosphorylation
prior
its
accumulation
into
toxic
aggregates
implicated
Alzheimer's
disease
(AD)
other
tauopathies.
However,
may,
fact,
represent
part
normal
but
interrupted
catabolism
protein.
In
addition
phosphorylation,
another
forms
post-translational
modification
including
(but
not
limited
to),
acetylation,
ubiquitination,
glycation,
glycosylation,
SUMOylation,
methylation,
oxidation,
nitration.
A
holistic
appreciation
how
regulate
during
health
are
potentially
hijacked
remains
elusive.
Recent
studies
reinforced
idea
play
critical
role
localization,
protein-protein
interactions,
maintenance
levels,
modifying
aggregate
structure.
These
also
provide
tantalizing
clues
possibility
neurons
actively
choose
is
post-translationally
modified,
competitive
combinatorial
ways,
achieve
broad,
cellular
programs
commensurate
distinctive
environmental
conditions
found
development,
aging,
stress,
Here,
we
review
describe
what
currently
known
about
their
functional
impacts.
addition,
classify
from
perspectives
electrostatics,
stability,
all
contribute
homeostasis.
Finally,
assess
impact
solubility
aggregation.
Tau
occupies
undoubtedly
important
position
biology
neurodegenerative
diseases.
This
aims
integrated
perspective
actively,
purposefully,
dynamically
remodel
function,
clearance,
doing
so,
hope
enable
more
comprehensive
understanding
will
positively
future
studies.
Molecular Neurodegeneration,
Journal Year:
2021,
Volume and Issue:
16(1)
Published: Dec. 18, 2021
Synucleinopathies
are
clinically
and
pathologically
heterogeneous
disorders
characterized
by
pathologic
aggregates
of
α-synuclein
in
neurons
glia,
the
form
Lewy
bodies,
neurites,
neuronal
cytoplasmic
inclusions,
glial
inclusions.
can
be
divided
into
two
major
disease
entities:
body
multiple
system
atrophy
(MSA).
Common
clinical
presentations
Parkinson's
(PD),
PD
with
dementia,
dementia
bodies
(DLB),
while
MSA
has
subtypes,
predominant
cerebellar
ataxia
parkinsonism.
There
currently
no
disease-modifying
therapies
for
synucleinopathies,
but
information
obtained
from
molecular
genetics
models
that
explore
mechanisms
conversion
to
oligomers
insoluble
fibrils
offer
hope
eventual
therapies.
It
remains
unclear
how
associated
distinct
cellular
pathologies
(e.g.,
inclusions)
what
factors
determine
neuroanatomical
cell
type
vulnerability.
Accumulating
evidence
vitro
vivo
experiments
suggests
species
derived
"strains"
having
different
seeding
properties.
Recent
advancements
assays,
such
as
real-time
quaking-induced
(RT-QuIC)
protein
misfolding
cyclic
amplification
(PMCA),
not
only
demonstrate
activity
also
exciting
opportunities
diagnosis
using
readily
accessible
peripheral
tissue
samples.
Cryogenic
electron
microscopy
(cryo-EM)
structural
studies
recombinant
or
brain-derived
filaments
provide
new
insight
synucleinopathies.
In
this
review,
we
describe
clinical,
genetic
neuropathologic
features
including
a
discussion
evolution
classification
staging
disease.
We
brief
on
proposed
formation,
well
supporting
existence
strains
MSA.
Science,
Journal Year:
2021,
Volume and Issue:
371(6532)
Published: Feb. 25, 2021
The
many
faces
of
tau
protein
is
implicated
in
several
brain
disorders,
including
Alzheimer's
disease,
suggesting
that
it
could
be
a
target
therapeutics.
However,
because
unclear
how
the
pleiotropic
roles
lead
to
neural
pathology
different
diseases,
drug
development
remains
challenging.
Chang
et
al.
review
possible
mechanisms
diseases
and
paths
forward
improving
research
development.
Science
,
this
issue
p.
eabb8255
Neural Regeneration Research,
Journal Year:
2021,
Volume and Issue:
17(8), P. 1666 - 1666
Published: Dec. 10, 2021
Alzheimer's
disease
is
a
neurodegenerative
that
accounts
for
most
of
the
50-million
dementia
cases
worldwide
in
2018.
A
large
amount
evidence
supports
amyloid
cascade
hypothesis,
which
states
amyloid-beta
accumulation
triggers
tau
hyperphosphorylation
and
aggregation
form
neurofibrillary
tangles,
these
aggregates
lead
to
inflammation,
synaptic
impairment,
neuronal
loss,
thus
cognitive
decline
behavioral
abnormalities.
The
poor
correlation
found
between
plaques,
have
led
scientific
community
question
whether
actually
triggering
neurodegeneration
disease.
occurrence
tangles
better
correlates
loss
clinical
symptoms
and,
although
may
initiate
events,
impairment
likely
effector
molecule
neurodegeneration.
Recently,
it
has
been
shown
cooperatively
work
impair
transcription
genes
involved
function
more
importantly,
downregulation
partially
reverses
transcriptional
perturbations.
Despite
mounting
points
an
interplay
tau,
some
factors
could
independently
affect
both
pathologies.
Thus,
dual
pathway
there
are
common
upstream
causing
abnormalities
proposed.
Among
others,
immune
system
seems
be
strongly
Other
factors,
as
apolipoprotein
E
ε4
isoform
suggested
act
link
hyperphosphorylation.
Interestingly,
amyloid-beta-immunotherapy
reduces
not
only
but
also
levels
animal
models
trials.
Likewise,
tau-immunotherapy
levels.
even
though
immunotherapy
advanced
than
tau-immunotherapy,
combined
tau-directed
therapies
at
early
stages
recently
proposed
strategy
stop
progression
FEBS Open Bio,
Journal Year:
2021,
Volume and Issue:
11(4), P. 999 - 1013
Published: Feb. 6, 2021
The
propagation
of
conformational
strains
by
templated
seeding
is
central
to
the
prion
concept.
Seeded
assembly
α-synuclein
into
filaments
believed
underlie
prion-like
spreading
protein
inclusions
in
a
number
human
neurodegenerative
diseases,
including
Parkinson's
disease,
dementia
with
Lewy
bodies
(DLB)
and
multiple
system
atrophy
(MSA).
We
previously
determined
atomic
structures
from
putamen
five
individuals
MSA.
Here,
we
used
filament
preparations
three
these
brains
for
vitro
seeded
recombinant
α-synuclein.
find
that
assemblies
differ
those
seeds,
suggesting
additional,
as
yet
unknown,
factors
play
role
seeds.
Identification
will
be
essential
understanding
proteinopathies.
Chemical Society Reviews,
Journal Year:
2021,
Volume and Issue:
51(2), P. 513 - 565
Published: Dec. 10, 2021
We
discuss
novel
approaches
for
embracing
and
reproducing
complexity
of
Tau
pathology
required
developing
disease-relevant
diagnostics
effective
therapies.