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Lipoprotein receptor loss in forebrain radial glia results in neurological deficits and severe seizures.
Glia 68, 2517-2549 (2020)
The Alzheimer disease-associated multifunctional low-density lipoprotein receptor-related protein-1 is expressed in the brain. Recent studies uncovered a role of this receptor for the appropriate functioning of neural stem cells, oligodendrocytes, and neurons. The constitutive knock-out (KO) of the receptor is embryonically lethal. To unravel the receptors' role in the developing brain we generated a mouse mutant by specifically targeting radial glia stem cells of the dorsal telencephalon. The low-density lipoprotein receptor-related protein-1 lineage-restricted KO female and male mice, in contrast to available models, developed a severe neurological phenotype with generalized seizures during early postnatal development. The mechanism leading to a buildup of hyperexcitability and emergence of seizures was traced to a failure in adequate astrocyte development and deteriorated postsynaptic density integrity. The detected impairments in the astrocytic lineage: precocious maturation, reactive gliosis, abolished tissue plasminogen activator uptake, and loss of functionality emphasize the importance of this glial cell type for synaptic signaling in the developing brain. Together, the obtained results highlight the relevance of astrocytic low-density lipoprotein receptor-related protein-1 for glutamatergic signaling in the context of neuron-glia interactions and stage this receptor as a contributing factor for epilepsy.
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Publication type
Article: Journal article
Document type
Scientific Article
Keywords
Astrocytes ; Epilepsy ; Lipoprotein Receptor-related Protein ; Radial Glia Stem Cells ; Reactive Astrocytes ; Seizures ; Tissue Plasminogen Activator; Methyl-d-aspartate; Tissue-plasminogen Activator; Immediate-early Gene; Conditional Deletion; Glutamate Uptake; Protein-1 Lrp1; Mouse Model; Brain; Expression; Astrocytes
Language
english
Publication Year
2020
HGF-reported in Year
2020
ISSN (print) / ISBN
0894-1491
e-ISSN
1098-1136
Journal
Glia
Quellenangaben
Volume: 68,
Issue: 12,
Pages: 2517-2549
Publisher
Wiley
Publishing Place
111 River St, Hoboken 07030-5774, Nj Usa
Reviewing status
Peer reviewed
Institute(s)
Institute of Stem Cell Research (ISF)
POF-Topic(s)
30204 - Cell Programming and Repair
Research field(s)
Stem Cell and Neuroscience
PSP Element(s)
G-500800-001
WOS ID
WOS:000542421900001
Scopus ID
85087308158
Scopus ID
85087016064
PubMed ID
32579270
Erfassungsdatum
2020-07-03