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Item Type: | Article |
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Title: | Familial Alzheimer disease mutation identifies novel role of SORLA in release of neurotrophic exosomes |
Creators Name: | Juul-Madsen, Kristian, Rudolph, Ina-Maria, Gomes, Jemila P., Meyer, Katrina, Ovesen, Peter L., Gorniak-Walas, Malgorzata, Kokoli, Marianna, Telugu, Narasimha S., vonTangen Sivertsen, Malthe, Febbraro, Fabia, Sutherland, Duncan S., Palmfeldt, Johan, Diecke, Sebastian, Andersen, Olav M., Selbach, Matthias and Willnow, Thomas E. |
Abstract: | INTRODUCTION: Mutations in SORL1, encoding the sorting receptor Sortilin-related receptor with A-type repeats (SORLA), are found in individuals with Alzheimer's disease (AD). We studied SORLA(N1358S), carrying a mutation in its ligand binding domain, to learn more about receptor functions relevant for human brain health. METHODS: We investigated consequences of SORLA(N1358S) expression in induced pluripotent stem cell (iPSC)-derived human neurons and microglia, using unbiased proteome screens and functional cell assays. RESULTS: We identified alterations in the SORLA(N1358S) interactome linked to biogenesis of exosomes. Consequently, the mutant receptor failed to promote release and neurotrophic qualities of exosomes, a defect attributed to altered exosomal content of microRNAs controlling neuronal maturation. DISCUSSION: We identified a role for SORLA in controlling quantity and neurotrophic quality of exosomes secreted by cells, suggesting impaired cellular cross talk through exosomes as a pathological trait contributing to AD pathology in carriers of SORL1 variants. |
Keywords: | Alzheimer’s Disease, Exosomes, IPSC Models, Microglia, Multi-Omics |
Source: | Alzheimer's & Dementia |
ISSN: | 1552-5260 |
Publisher: | Wiley |
Volume: | 21 |
Number: | 9 |
Page Range: | e70591 |
Date: | 10 September 2025 |
Official Publication: | https://doi.org/10.1002/alz.70591 |
PubMed: | View item in PubMed |
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