Werner, G.* ; Damme, M.* ; Schludi, M.* ; Gnoerich, J.* ; Wind, K.* ; Fellerer, K.* ; Wefers, B. ; Wurst, W. ; Edbauer, D.* ; Brendel, M.* ; Haass, C.* ; Capell, A.*
Loss of TMEM106B potentiates lysosomal and FTLD-like pathology in progranulin-deficient mice.
EMBO Rep. 21:e50241 (2020)
Single nucleotide polymorphisms (SNPs) inTMEM106Bencoding the lysosomal typeIItransmembrane protein 106B increase the risk for frontotemporal lobar degeneration (FTLD) ofGRN(progranulin gene) mutation carriers. Currently, it is unclear if progranulin (PGRN) andTMEM106B are synergistically linked and if a gain or a loss of function ofTMEM106B is responsible for the increased disease risk of patients withGRNhaploinsufficiency. We therefore compare behavioral abnormalities, gene expression patterns, lysosomal activity, andTDP-43 pathology in single and double knockout animals.Grn(-/-)/Tmem106b(-/-)mice show a strongly reduced life span and massive motor deficits. Gene expression analysis reveals an upregulation of molecular signature characteristic for disease-associated microglia and autophagy. Dysregulation of maturation of lysosomal proteins as well as an accumulation of ubiquitinated proteins and widespread p62 deposition suggest that proteostasis is impaired. Moreover, while singleGrn(-/-)knockouts only occasionally showTDP-43 pathology, the double knockout mice exhibit deposition of phosphorylatedTDP-43. Thus, a loss of function ofTMEM106B may enhance the risk forGRN-associatedFTLDby reduced protein turnover in the lysosomal/autophagic system.
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Publikationstyp
Artikel: Journalartikel
Dokumenttyp
Wissenschaftlicher Artikel
Typ der Hochschulschrift
Herausgeber
Schlagwörter
Ftd ; Neurodegeneration ; Progranulin ; Tdp-43 ; Tmem106b; Frontotemporal Lobar Degeneration; Risk-factor Tmem106b; Hexanucleotide Repeat; Mouse Model; Dementia; Protein; Tdp-43; Gene; Autophagy; C9orf72
Keywords plus
Sprache
englisch
Veröffentlichungsjahr
2020
Prepublished im Jahr
HGF-Berichtsjahr
2020
ISSN (print) / ISBN
1469-221X
e-ISSN
1469-3178
ISBN
Bandtitel
Konferenztitel
Konferzenzdatum
Konferenzort
Konferenzband
Quellenangaben
Band: 21,
Heft: 10,
Seiten: ,
Artikelnummer: e50241
Supplement: ,
Reihe
Verlag
EMBO Press
Verlagsort
111 River St, Hoboken 07030-5774, Nj Usa
Tag d. mündl. Prüfung
0000-00-00
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Gutachter
Prüfer
Topic
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Veröffentlichungsdatum
0000-00-00
Anmeldedatum
0000-00-00
Anmelder/Inhaber
weitere Inhaber
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Priorität
Begutachtungsstatus
Peer reviewed
POF Topic(s)
30204 - Cell Programming and Repair
Forschungsfeld(er)
Genetics and Epidemiology
PSP-Element(e)
G-500500-001
G-500500-009
Förderungen
Projekt DEAL
Koselleck Project of the DFG (Helmholtz-Gemeinschaft, Zukunftsthema "Immunology and Inflammation")
Deutsche Forschungsgemeinschaft (DFG)
Copyright
Erfassungsdatum
2020-10-30