What is the mechanism by which CD11c+ cells transport alpha-synuclein from brain to gut?

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Description

The abstract shows that ileal alpha-synuclein aggregates are contained within CD11c+ cells, but the cellular and molecular mechanisms of this brain-to-gut trafficking are not explained. Understanding this transport mechanism is critical for developing interventions to block pathological protein spread in Parkinson’s disease.

Gap type: unexplained_observation Source paper: Brain-to-gut trafficking of alpha-synuclein by CD11c (None, None, PMID:37981650)

Resolution criteria

Resolved when CD11c+ brain-to-gut alpha-synuclein transport is traced and its cellular mechanism defined. Required evidence: labeled alpha-synuclein tracking from CNS to gut, CD11c+ cell depletion or trafficking blockade, single-cell phenotyping of carrier cells, barrier/transmigration assays, and quantification of ileal aggregate delivery. Closure requires showing whether transport is mediated by migratory dendritic/macrophage-lineage cells, extracellular vesicles, or another route, and identifying at least one required trafficking molecule.

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