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@ARTICLE{Dinkel:273921,
author = {Dinkel, Lina and Hummel, Selina and Zenatti, Valerio and
Malara, Mariagiovanna and Tillmann, Yannik and Colombo,
Alessio Vittorio and Sebastian Monasor, Laura and Suh, Jung
H and Logan, Todd and Roth, Stefan and Paeger, Lars and
Hoffelner, Patricia and Bludau, Oliver and Schmidt, Andree
and Müller, Stephan A and Schifferer, Martina and Nuscher,
Brigitte and Njavro, Jasenka Rudan and Prestel, Matthias and
Bartos, Laura M and Wind-Mark, Karin and Slemann, Luna and
Hoermann, Leonie and Kunte, Sebastian T and Gnoerich,
Johannes and Lindner, Simon and Simons, Mikael and Herms,
Jochen and Paquet, Dominik and Lichtenthaler, Stefan F and
Bartenstein, Peter and Franzmeier, Nicolai and Liesz, Arthur
and Grosche, Antje and Bremova-Ertl, Tatiana and Catarino,
Claudia and Beblo, Skadi and Bergner, Caroline and
Schneider, Susanne A and Strupp, Michael and Di Paolo,
Gilbert and Brendel, Matthias and Tahirovic, Sabina},
title = {{M}yeloid cell-specific loss of {NPC}1 in mice
recapitulates microgliosis and neurodegeneration in patients
with {N}iemann-{P}ick type {C} disease.},
journal = {Science translational medicine},
volume = {16},
number = {776},
issn = {1946-6234},
address = {Washington, DC},
publisher = {AAAS},
reportid = {DZNE-2024-01395},
pages = {eadl4616},
year = {2024},
abstract = {Niemann-Pick type C (NPC) disease is an inherited lysosomal
storage disorder mainly driven by mutations in the NPC1
gene, causing lipid accumulation within late
endosomes/lysosomes and resulting in progressive
neurodegeneration. Although microglial activation precedes
neuronal loss, it remains elusive whether loss of the
membrane protein NPC1 in microglia actively contributes to
NPC pathology. In a mouse model with depletion of NPC1 in
myeloid cells, we report severe alterations in microglial
lipidomic profiles, including the enrichment of
bis(monoacylglycero)phosphate, increased cholesterol, and a
decrease in cholesteryl esters. Lipid dyshomeostasis was
associated with microglial hyperactivity, marked by an
increase in translocator protein 18 kDa (TSPO). These
hyperactive microglia initiated a pathological cascade
resembling NPC-like phenotypes, including a shortened life
span, motor impairments, astrogliosis, neuroaxonal
pathology, and increased neurofilament light chain (NF-L), a
neuronal injury biomarker. As observed in the mouse model,
patients with NPC showed increased NF-L in the blood and
microglial hyperactivity, as visualized by TSPO-PET imaging.
Reduced TSPO expression in blood-derived macrophages of
patients with NPC was measured after N-acetyl-l-leucine
treatment, which has been recently shown to have beneficial
effects in patients with NPC, suggesting that TSPO is a
potential marker to monitor therapeutic interventions for
NPC. Conclusively, these results demonstrate that myeloid
dysfunction, driven by the loss of NPC1, contributes to NPC
disease and should be further investigated for therapeutic
targeting and disease monitoring.},
keywords = {Animals / Niemann-Pick Disease, Type C: pathology /
Niemann-Pick Disease, Type C: metabolism / Niemann-Pick C1
Protein / Intracellular Signaling Peptides and Proteins:
metabolism / Humans / Microglia: metabolism / Microglia:
pathology / Mice / Myeloid Cells: metabolism / Myeloid
Cells: pathology / Receptors, GABA: metabolism / Disease
Models, Animal / Gliosis: pathology / Gliosis: metabolism /
Niemann-Pick C1 Protein (NLM Chemicals) / Intracellular
Signaling Peptides and Proteins (NLM Chemicals) / Npc1
protein, mouse (NLM Chemicals) / Bzrp protein, mouse (NLM
Chemicals) / Receptors, GABA (NLM Chemicals) / NPC1 protein,
human (NLM Chemicals)},
cin = {AG Tahirovic / AG Herms / AG Lichtenthaler / AG Misgeld /
AG Haass / AG Simons},
ddc = {500},
cid = {I:(DE-2719)1140003 / I:(DE-2719)1110001 /
I:(DE-2719)1110006 / I:(DE-2719)1110000-4 /
I:(DE-2719)1110007 / I:(DE-2719)1110008},
pnm = {352 - Disease Mechanisms (POF4-352) / 351 - Brain Function
(POF4-351)},
pid = {G:(DE-HGF)POF4-352 / G:(DE-HGF)POF4-351},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:39630885},
doi = {10.1126/scitranslmed.adl4616},
url = {https://pub.dzne.de/record/273921},
}