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NPJ Parkinson's disease
Published

Higher-molecular-weight a-synuclein oligomers are increased in the brain cytosol of patients with dementia with Lewy bodies

Authors

Emil Gregersen, Mia R Antorini, Lasse Reimer, Ludovica Zaccagnini, Dennis Selkoe, Tim Bartels, Poul Henning Jensen

Abstract

NPJ Parkinsons Dis. 2026 Feb 28. doi: 10.1038/s41531-026-01301-2. Online ahead of print.

ABSTRACT

The demonstration of MJFR14-6-4-2 proximity ligation assay positive aggregates in brains affected by Parkinson's disease and LRRK2 mutations, motivated the analysis of α-synuclein oligomers in brain cytosol from dementia with Lewy bodies (DLB) and control cases by combining size-exclusion chromatography, aggregate-specific MJFR14-6-4-2 ELISA and SDS-denaturing immunoblotting. We demonstrate a DLB-specific accumulation of large SDS-soluble oligomers, and the presence of medium-sized oligomers consisting of SDS-resistant α-synuclein dimers and trimers in both DLB and controls.

PMID:41764273 | DOI:10.1038/s41531-026-01301-2

UK DRI Authors

Tim Bartels

Dr Tim Bartels

Group Leader

Untangling protein structure to better understand function and treat neurodegeneration

Dr Tim Bartels