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Funk, N.* ; Munz, M.* ; Ott, T.* ; Brockmann, K.* ; Wenninger-Weinzierl, A.* ; Kühn, R.* ; Vogt Weisenhorn, D.M. ; Giesert, F. ; Wurst, W. ; Gasser, T.* ; Biskup, S.*

The Parkinson's disease-linked Leucine-rich repeat kinase 2 (LRRK2) is required for insulin-stimulated translocation of GLUT4.

Sci. Rep. 9:4515 (2019)
Publ. Version/Full Text Research data DOI PMC
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Mutations within Leucine-rich repeat kinase 2 (LRRK2) are associated with late-onset Parkinson's disease. The physiological function of LRRK2 and molecular mechanism underlying the pathogenic role of LRRK2 mutations remain uncertain. Here, we investigated the role of LRRK2 in intracellular signal transduction. We find that deficiency of Lrrk2 in rodents affects insulin-dependent translocation of glucose transporter type 4 (GLUT4). This deficit is restored during aging by prolonged insulin-dependent activation of protein kinase B (PKB, Akt) and Akt substrate of 160 kDa (AS160), and is compensated by elevated basal expression of GLUT4 on the cell surface. Furthermore, we find a crucial role of Rab10 phosphorylation by LRRK2 for efficient insulin signal transduction. Translating our findings into human cell lines, we find comparable molecular alterations in fibroblasts from Parkinson's patients with the known pathogenic G2019S LRRK2 mutation. Our results highlight the role of LRRK2 in insulin-dependent signalling with potential therapeutic implications.
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Publication type Article: Journal article
Document type Scientific Article
Keywords Synaptic Vesicle Endocytosis; Diabetes-mellitus; Glucose-transport; Protein; Phosphorylation; As160; Risk; Genetics; Epidemiology; Impairment
Language
Publication Year 2019
HGF-reported in Year 2019
ISSN (print) / ISBN 2045-2322
e-ISSN 2045-2322
Quellenangaben Volume: 9, Issue: 1, Pages: , Article Number: 4515 Supplement: ,
Publisher Nature Publishing Group
Publishing Place London
Reviewing status Peer reviewed
POF-Topic(s) 30204 - Cell Programming and Repair
Research field(s) Genetics and Epidemiology
PSP Element(s) G-500500-001
Scopus ID 85063013097
PubMed ID 30872638
Erfassungsdatum 2019-03-26