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@ARTICLE{Perneel:278077,
author = {Perneel, Jolien and Lastra Osua, Miranda and Alidadiani,
Sara and Peeters, Nele and De Witte, Linus and Heeman, Bavo
and Manzella, Simona and De Rycke, Riet and Brooks, Mieu and
Perkerson, Ralph B and Calus, Elke and De Coster, Wouter and
Neumann, Manuela and Mackenzie, Ian R A and Van Dam, Debby
and Asselbergh, Bob and Ellender, Tommas and Zhou, Xiaolai
and Rademakers, Rosa},
title = {{I}ncreased {TMEM}106{B} levels lead to lysosomal
dysfunction which affects synaptic signaling and neuronal
health.},
journal = {Molecular neurodegeneration},
volume = {20},
number = {1},
issn = {1750-1326},
address = {London},
publisher = {Biomed Central},
reportid = {DZNE-2025-00568},
pages = {45},
year = {2025},
abstract = {Genetic variation in Transmembrane protein 106B (TMEM106B)
is known to influence the risk and presentation in several
neurodegenerative diseases and modifies healthy aging. While
evidence from human studies suggests that the risk allele is
associated with higher levels of TMEM106B, the contribution
of elevated levels of TMEM106B to neurodegeneration and
aging has not been assessed and it remains unclear how
TMEM106B modulates disease risk.To study the effect of
increased TMEM106B levels, we generated Cre-inducible
transgenic mice expressing human wild-type TMEM106B. We
evaluated lysosomal and neuronal health using in vitro and
in vivo assays including transmission electron microscopy,
immunostainings, behavioral testing, electrophysiology, and
bulk RNA sequencing.We created the first transgenic mouse
model that successfully overexpresses TMEM106B, with a 4- to
8-fold increase in TMEM106B protein levels in heterozygous
(hTMEM106B(+)) and homozygous (hTMEM106B(++)) animals,
respectively. We showed that the increase in TMEM106B
protein levels induced lysosomal dysfunction and age-related
downregulation of genes associated with neuronal plasticity,
learning, and memory. Increased TMEM106B levels led to
altered synaptic signaling in 12-month-old animals which
further exhibited an anxiety-like phenotype. Finally, we
observed mild neuronal loss in the hippocampus of
21-month-old animals.Characterization of the first
transgenic mouse model that overexpresses TMEM106B suggests
that higher levels of TMEM106B negatively impacts brain
health by modifying brain aging and impairing the resilience
of the brain to the pathomechanisms of neurodegenerative
disorders. This novel model will be a valuable tool to study
the involvement and contribution of increased TMEM106B
levels to aging and will be essential to study the many
age-related diseases in which TMEM106B was genetically shown
to be a disease- and risk-modifier.},
keywords = {Animals / Membrane Proteins: metabolism / Membrane
Proteins: genetics / Mice, Transgenic / Lysosomes:
metabolism / Mice / Humans / Nerve Tissue Proteins:
metabolism / Nerve Tissue Proteins: genetics / Neurons:
metabolism / Neurodegenerative Diseases: metabolism /
Neurodegenerative Diseases: genetics / Signal Transduction:
physiology / Synapses: metabolism / Disease Models, Animal /
Lysosomal dysfunction (Other) / Mouse model (Other) /
Neuronal activity (Other) / Synaptic signaling (Other) /
TMEM106B (Other) / Membrane Proteins (NLM Chemicals) / Nerve
Tissue Proteins (NLM Chemicals) / TMEM106B protein, human
(NLM Chemicals)},
cin = {AG Neumann},
ddc = {570},
cid = {I:(DE-2719)1210003},
pnm = {352 - Disease Mechanisms (POF4-352)},
pid = {G:(DE-HGF)POF4-352},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:40269985},
pmc = {pmc:PMC12016085},
doi = {10.1186/s13024-025-00831-2},
url = {https://pub.dzne.de/record/278077},
}