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@ARTICLE{Lutz:153984,
author = {Lutz, Anne-Kathrin and Pfaender, Stefanie and Incearap,
Berra and Ioannidis, Valentin and Ottonelli, Ilaria and
Föhr, Karl J. and Cammerer, Judith and Zoller, Marvin and
Higelin, Julia and Giona, Federica and Stetter, Maximilian
and Stoecker, Nicole and Alami, Najwa Ouali and Schön,
Michael and Orth, Michael and Liebau, Stefan and Barbi,
Gotthold and Grabrucker, Andreas M. and Delorme, Richard and
Fauler, Michael and Mayer, Benjamin and Jesse, Sarah and
Roselli, Francesco and Ludolph, Albert C. and Bourgeron,
Thomas and Verpelli, Chiara and Demestre, Maria and
Böckers, Tobias},
title = {{A}utism-associated {SHANK}3 mutations impair maturation of
neuromuscular junctions and striated muscles},
journal = {Science translational medicine},
volume = {12},
number = {547},
issn = {1946-6242},
address = {Washington, DC},
publisher = {AAAS},
reportid = {DZNE-2021-00001},
pages = {eaaz3267 -},
year = {2020},
abstract = {Heterozygous mutations of the gene encoding the
postsynaptic protein SHANK3 are associated with syndromic
forms of autism spectrum disorders (ASDs). One of the
earliest clinical symptoms in SHANK3-associated ASD is
neonatal skeletal muscle hypotonia. This symptom can be
critical for the early diagnosis of affected children;
however, the mechanism mediating hypotonia in ASD is not
completely understood. Here, we used a combination of
patient-derived human induced pluripotent stem cells
(hiPSCs), Shank3Δ11(−/−) mice, and Phelan-McDermid
syndrome (PMDS) muscle biopsies from patients of different
ages to analyze the role of SHANK3 on motor unit
development. Our results suggest that the hypotonia in
SHANK3 deficiency might be caused by dysfunctions in all
elements of the voluntary motor system: motoneurons,
neuromuscular junctions (NMJs), and striated muscles. We
found that SHANK3 localizes in Z-discs in the skeletal
muscle sarcomere and co-immunoprecipitates with α-ACTININ.
SHANK3 deficiency lead to shortened Z-discs and severe
impairment of acetylcholine receptor clustering in
hiPSC-derived myotubes and in muscle from
Shank3Δ11(−/−) mice and patients with PMDS, indicating
a crucial role for SHANK3 in the maturation of NMJs and
striated muscle. Functional motor defects in
Shank3Δ11(−/−) mice could be rescued with the troponin
activator Tirasemtiv that sensitizes muscle fibers to
calcium. Our observations give insight into the function of
SHANK3 besides the central nervous system and imply
potential treatment strategies for SHANK3-associated ASD.},
keywords = {Animals / Autistic Disorder / Humans / Induced Pluripotent
Stem Cells / Mice / Microfilament Proteins / Muscle,
Skeletal / Mutation: genetics / Nerve Tissue Proteins:
genetics / Neuromuscular Junction},
cin = {AG Böckers / Clinical Study Center Ulm / AG Roselli},
ddc = {500},
cid = {I:(DE-2719)1910002 / I:(DE-2719)5000077 /
I:(DE-2719)1910001},
pnm = {342 - Disease Mechanisms and Model Systems (POF3-342) / 344
- Clinical and Health Care Research (POF3-344) / POF III -
Programmorientierte Förderung III (POF) / DISPLAYGHT -
DISPLAY backliGHT illumination by femtosecond laser
micromachining (862085)},
pid = {G:(DE-HGF)POF3-342 / G:(DE-HGF)POF3-344 / G:(DE-HGF)POF3 /
G:(EU-Grant)862085},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:32522805},
doi = {10.1126/scitranslmed.aaz3267},
url = {https://pub.dzne.de/record/153984},
}