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@ARTICLE{Aillaud:163637,
author = {Aillaud, Isabelle and Kaniyappan, Senthilvelrajan and
Chandupatla, Ram Reddy and Ramirez, Lisa-Marie and
Alkhashrom, Sewar and Eichler, Jutta and Horn, Anselm H C
and Zweckstetter, Markus and Mandelkow, Eckhard and Sticht,
Heinrich and Funke, Susanne Aileen},
title = {{A} novel {D}-amino acid peptide with therapeutic potential
({ISAD}1) inhibits aggregation of neurotoxic
disease-relevant mutant {T}au and prevents {T}au toxicity in
vitro.},
journal = {Alzheimer's research $\&$ therapy},
volume = {14},
number = {1},
issn = {1758-9193},
address = {London},
publisher = {BioMed Central},
reportid = {DZNE-2022-00383},
pages = {15},
year = {2022},
abstract = {Alzheimer's disease (AD), the most common form of dementia,
is a progressive neurodegenerative disorder that mainly
affects older adults. One of the pathological hallmarks of
AD is abnormally aggregated Tau protein that forms fibrillar
deposits in the brain. In AD, Tau pathology correlates
strongly with clinical symptoms, cognitive dysfunction, and
neuronal death.We aimed to develop novel therapeutic D-amino
acid peptides as Tau fibrillization inhibitors. It has been
previously demonstrated that D-amino acid peptides are
protease stable and less immunogenic than L-peptides, and
these characteristics may render them suitable for in vivo
applications. Using a phage display procedure against wild
type full-length Tau (TauFL), we selected a novel Tau
binding L-peptide and synthesized its D-amino acid version
ISAD1 and its retro inversed form, ISAD1rev,
respectively.While ISAD1rev inhibited Tau aggregation only
moderately, ISAD1 bound to Tau in the aggregation-prone PHF6
region and inhibited fibrillization of TauFL,
disease-associated mutant full-length Tau (TauFLΔK,
TauFL-A152T, TauFL-P301L), and pro-aggregant repeat domain
Tau mutant (TauRDΔK). ISAD1 and ISAD1rev induced the
formation of large high molecular weight TauFL and TauRDΔK
oligomers that lack proper Thioflavin-positive β-sheet
conformation even at lower concentrations. In silico
modeling of ISAD1 Tau interaction at the PHF6 site revealed
a binding mode similar to those known for other PHF6 binding
peptides. Cell culture experiments demonstrated that ISAD1
and its inverse form are taken up by N2a-TauRDΔK cells
efficiently and prevent cytotoxicity of externally added Tau
fibrils as well as of internally expressed TauRDΔK.ISAD1
and related peptides may be suitable for therapy development
of AD by promoting off-pathway assembly of Tau, thus
preventing its toxicity.},
keywords = {Aged / Alzheimer Disease: drug therapy / Alzheimer Disease:
pathology / Amino Acids: therapeutic use / Cells, Cultured /
Humans / Peptides: therapeutic use / Protein Conformation,
beta-Strand / tau Proteins: metabolism / tau Proteins:
toxicity / Alzheimer’s disease (Other) / D-amino
acid peptides (Other) / Phage display (Other) / Tau
aggregation inhibitors (Other) / Therapy (Other) / Amino
Acids (NLM Chemicals) / Peptides (NLM Chemicals) / tau
Proteins (NLM Chemicals)},
cin = {AG Mandelkow 2 / AG Mandelkow 1 / AG Zweckstetter},
ddc = {610},
cid = {I:(DE-2719)1013015 / I:(DE-2719)1013014 /
I:(DE-2719)1410001},
pnm = {352 - Disease Mechanisms (POF4-352)},
pid = {G:(DE-HGF)POF4-352},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:35063014},
pmc = {pmc:PMC8783508},
doi = {10.1186/s13195-022-00959-z},
url = {https://pub.dzne.de/record/163637},
}